1. A method for testing the cleanliness of a packaging container after cleaning is characterized by comprising the following steps: the method comprises the steps of firstly detecting the concentration of a cleaning agent before washing of the cleaning agent solution, then injecting the cleaning agent solution into a cleaned packaging container (0), enabling the cleaning agent solution in the packaging container (0) to flush residues on the inner wall of the packaging container, discharging the cleaning agent solution containing the residues in the packaging container (0), and then detecting the concentration of the cleaning agent after washing of the cleaning agent solution containing the residues, wherein the ratio of the concentration of the cleaning agent before washing to the concentration of the cleaning agent after washing is the cleanliness of the packaging container (0).

2. The method for testing the cleanliness of a washed packaging container according to claim 1, wherein:

the cleaning agent is xylene;

the cleaning agent solution is a cleaning agent aqueous solution;

the cleaning agent solution is placed in a solution tank (6);

the concentration of the cleaning agent before washing is weight percentage concentration or weight volume concentration; accordingly, the number of the first and second electrodes,

the concentration of the washed cleaning agent is weight percentage concentration or weight volume concentration;

detecting the concentration of the cleaning agent solution in the solution tank (6) before washing by a liquid chromatography detector (9);

the cleaning agent solution in the solution tank (6) is injected into the cleaned packaging container (0) through a metering pump (7);

the metering pump (7) is a high-pressure metering pump;

injecting the cleaning agent solution in the solution tank (6) into the cleaned packaging container (0) through a metering pump and a high-pressure spray head (14) and spraying the cleaning agent solution to the inner wall of the packaging container (0) so that the cleaning agent solution in the packaging container (0) washes residues on the inner wall of the packaging container; and/or the presence of a gas in the gas,

spraying the cleaning agent solution injected into the packaging container (0) to the inner wall of the packaging container (0) through a metering pump (7) and a high-pressure spray head (14), so that the cleaning agent solution in the packaging container (0) flushes residues on the inner wall of the packaging container; and/or the presence of a gas in the gas,

driving the packaging container (0) to move, so that the cleaning agent solution in the packaging container (0) washes residues on the inner wall of the packaging container;

the volume of the cleaning agent solution injected into the cleaned packaging container (0) accounts for 2-3% of the volume of the packaging container;

the packaging container (0) is driven to move by the omnibearing flushing device in the packaging container;

the inner side wall, the inner bottom wall and the inner top wall of the packaging container (0) are all washed;

discharging the cleaning agent solution containing residues in the packaging container (0) into a sampling container (8) through a metering pump (7);

the sampling container (8) is a glass flask;

the discharge amount of the cleaning agent solution discharged to the sampling container (8) containing residues is 95% of the injection amount of the cleaning agent solution injected into the packaging container (0) after cleaning;

the concentration of the cleaning agent solution containing the residue in the sampling container (8) after cleaning is detected by a liquid chromatography detector (9).

3. The utility model provides a test system of packing container cleanliness factor after wasing which characterized in that: comprises a solution tank (6), a liquid chromatograph (9) and an all-round flushing device in a packaging container.

4. The system for testing the cleanliness of the cleaned packaging containers according to claim 3, wherein:

the liquid outlet of the solution tank (6) is communicated with the liquid inlet of the metering pump (7);

the metering pump (7) is a high-pressure metering pump;

a liquid outlet of the metering pump (7) is communicated with a high-pressure spray head (14);

the high-pressure nozzle (14) is a high-pressure nozzle with a stem;

the high-pressure spray head (14) extends into the packaging container;

a liquid return pipeline is communicated with a liquid inlet of the metering pump (7);

a liquid inlet of the liquid return pipeline extends into the packaging container and is submerged into the liquid level;

the liquid return pipeline is communicated with a second valve (11) in series;

a first valve (10) is communicated with a liquid outlet of the solution tank (6);

the liquid outlet of the metering pump (7) is communicated with the liquid inlet of the sampling container (8);

a fourth valve (13) is communicated with a liquid inlet of the sampling container (8) in series;

a third valve (12) is communicated with a liquid inlet of the high-pressure spray head (14) in series.

5. The system for testing the cleanliness of the cleaned packaging containers according to claim 4, wherein:

the all-round flushing device in the packaging container is a guide rail type all-round flushing device in the packaging container.

Background

The steel barrel and the plastic barrel are important chemical product packaging containers. The chemical products contained in the container have wide sources and complex components, and have the characteristics of corrosivity, toxicity and the like. With the development of recycling economy, the chemical packaging containers are reused after being cleaned, which becomes a development trend. However, cleanliness after cleaning is an important index for determining whether cleaning is clean or not. At present, wet cleaning is mainly carried out through a solvent, and residues after cleaning still lack rapid and effective detection means and standards, so that the healthy development of the packaging container cleaning industry is influenced. The fundamental reason is that the packaging container is small in mouth and big in belly, and a detector cannot be directly placed in the packaging container to detect residues, so that a method and a system for testing the cleanliness of the cleaned packaging container do not exist at present. The applicant has searched for patent documents, and has not searched for a method and system for testing the cleanliness of a washed packaging container.

Disclosure of Invention

The first technical problem to be solved by the invention is to provide a method for testing the cleanliness of a cleaned packaging container, which can effectively detect the cleanliness of the cleaned packaging container without placing a detector in the packaging container.

The second technical problem to be solved by the invention is to provide a system for testing the cleanliness of the cleaned packaging containers, which can effectively detect the cleanliness of the cleaned packaging containers without arranging a detector in the packaging containers.

In terms of method, in order to solve the first technical problem, the invention provides a method for testing the cleanliness of a packaging container after cleaning, which comprises the steps of detecting the concentration of a cleaning agent before cleaning of the cleaning agent solution, injecting the cleaning agent solution into the packaging container after cleaning, enabling the cleaning agent solution in the packaging container to wash residues on the inner wall of the packaging container, discharging the cleaning agent solution containing the residues in the packaging container, and then detecting the concentration of the cleaning agent after cleaning of the cleaning agent solution containing the residues, wherein the ratio of the concentration of the cleaning agent before cleaning to the concentration of the cleaning agent after cleaning is the cleanliness of the packaging container.

Various improvements of the present invention are as follows.

The cleaning agent is xylene;

the cleaning agent solution is a cleaning agent aqueous solution;

the cleaning agent solution is placed in a solution tank;

the concentration of the cleaning agent before washing is weight percentage concentration or weight volume concentration; accordingly, the number of the first and second electrodes,

the concentration of the washed cleaning agent is weight percentage concentration or weight volume concentration;

detecting the concentration of the cleaning agent solution in the solution tank before washing by using a liquid chromatography detector;

injecting the cleaning agent solution in the solution tank into the cleaned packaging container through a metering pump;

the metering pump is a high-pressure metering pump;

injecting the cleaning agent solution in the solution tank into the cleaned packaging container through a metering pump and a high-pressure nozzle and spraying the cleaning agent solution to the inner wall of the packaging container, so that the cleaning agent solution in the packaging container washes residues on the inner wall of the packaging container; and/or the presence of a gas in the gas,

spraying the cleaning agent solution injected into the packaging container to the inner wall of the packaging container through a metering pump and a high-pressure nozzle, so that the cleaning agent solution in the packaging container washes residues on the inner wall of the packaging container; and/or the presence of a gas in the gas,

driving the packaging container to move, so that the cleaning agent solution in the packaging container washes residues on the inner wall of the packaging container;

the volume of the cleaning agent solution injected into the cleaned packaging container accounts for 2% -3% of the volume of the packaging container;

the packaging container is driven to move by the omnibearing flushing device in the packaging container;

washing the inner side wall, the inner bottom wall and the inner top wall of the packaging container;

discharging the cleaning agent solution containing residues in the packaging container into a sampling container through a metering pump;

the sampling container is a glass flask;

the discharge amount of the cleaning agent solution discharged to the sampling container containing the residue is 95% of the injection amount of the cleaning agent solution injected into the packaging container after cleaning;

and detecting the concentration of the cleaning agent solution containing residues in the sampling container after washing by using a liquid chromatography detector.

Compared with the prior art, the method for testing the cleanliness of the cleaned packaging container has the following beneficial effects.

1. According to the technical scheme, the concentration of the cleaning agent before cleaning of the cleaning agent solution is detected firstly, then the cleaning agent solution is injected into the cleaned packaging container, the cleaning agent solution in the packaging container washes away residues on the inner wall of the packaging container, the cleaning agent solution containing the residues in the packaging container is discharged, then the concentration of the cleaning agent after cleaning of the cleaning agent solution containing the residues is detected, and the ratio of the concentration of the cleaning agent before cleaning to the concentration of the cleaning agent after cleaning is the cleanliness of the packaging container.

2. The technical scheme adopts the technical means that the cleaning agent is dimethylbenzene, so that the detection cost is favorably reduced.

3. The technical scheme adopts the technical means that the cleaning agent solution is the cleaning agent aqueous solution, so that the detection cost is further reduced.

4. The technical scheme adopts the technical means that the cleaning agent solution is placed in the solution tank, so that the safe operation is facilitated.

5. The concentration of the cleaning agent before washing is the weight percentage concentration or the weight volume concentration; correspondingly, the concentration of the cleaning agent after washing is a technical means of weight percentage concentration or weight volume concentration, so that the intuition of the detection result is favorably improved.

6. According to the technical scheme, the technical means of detecting the concentration of the cleaning agent in the cleaning agent solution in the solution tank before washing through the liquid chromatography detector is adopted, so that the detection result can be subjected to standardized treatment, and the comparability of the detection result is improved.

7. According to the technical scheme, the technical means that the cleaning agent solution in the solution tank is injected into the cleaned packaging container through the metering pump is adopted, so that the inner wall of the packaging container can be flushed.

8. The technical proposal adopts the metering pump to select the high-pressure metering pump; injecting the cleaning agent solution in the solution tank into the cleaned packaging container through a metering pump and a high-pressure nozzle and spraying the cleaning agent solution to the inner wall of the packaging container, so that the cleaning agent solution in the packaging container washes residues on the inner wall of the packaging container; and/or spraying the cleaning agent solution injected into the packaging container to the inner wall of the packaging container through a metering pump and a high-pressure spray head, so that the cleaning agent solution in the packaging container washes residues on the inner wall of the packaging container; and/or the packaging container is driven to move, so that the residues on the inner wall of the packaging container are washed by the cleaning agent solution in the packaging container, the inner wall of the packaging container can be thoroughly washed, and the precision of the detection result can be greatly improved.

9. According to the technical scheme, the technical means that the volume of the cleaning agent solution injected into the cleaned packaging container accounts for 2% -3% of the volume of the packaging container is adopted, so that residues flushed from the packaging container can be ensured to be in a dissolved state.

10. The technical proposal adopts the technical proposal that the packaging container is driven to move by the omnibearing flushing device in the packaging container; the inner side wall, the inner bottom wall and the inner top wall of the packaging container are all scoured by the technical means, so that the scouring efficiency can be greatly improved.

11. This technical scheme is owing to adopted and has contained the technical means of cleaner solution discharge to the sampling vessel in of residue through the measuring pump in with the packaging container, so, is favorable to detecting the cleaner solution that contains the residue.

12. The technical proposal adopts the technical means that the sampling container is a glass flask, thereby being beneficial to reducing the cost of the detection apparatus.

13. According to the technical scheme, the technical means that the discharge amount of the cleaning agent solution discharged to the sampling container and containing residues is 95% of the injection amount of the cleaning agent solution injected into the cleaned packaging container is adopted, so that the precision of the detection result can be greatly improved.

14. According to the technical scheme, the technical means of detecting the concentration of the cleaning agent solution containing residues in the sampling container by the liquid chromatography detector after cleaning is adopted, so that the cleanliness of the packaging container can be detected without putting the detector into the packaging container.

In terms of a system, in order to solve the second technical problem, the invention provides a system for testing the cleanliness of a packaging container after cleaning, which comprises a solution tank, a liquid chromatograph and an all-directional flushing device inside the packaging container.

Various improvements of the present invention are as follows.

The liquid outlet of the solution tank is communicated with the liquid inlet of the metering pump;

the metering pump is a high pressure metering pump;

the liquid outlet of the metering pump is communicated with the high-pressure spray head;

the high-pressure spray head is a high-pressure spray head with a rod handle;

the high-pressure spray head extends into the packaging container;

a liquid return pipeline is communicated with a liquid inlet of the metering pump;

a liquid inlet of the liquid return pipeline extends into the packaging container and is submerged into the liquid level;

the liquid return pipeline is communicated with a second valve in series;

a first valve is communicated with a liquid outlet of the solution tank in series;

the liquid outlet of the metering pump is communicated with the liquid inlet of the sampling container;

a fourth valve is communicated with the liquid inlet of the sampling container in series;

and a third valve is communicated with the liquid inlet of the high-pressure spray head in series.

The all-round scouring device in the packaging container is a guide rail type all-round scouring device in the packaging container;

the all-dimensional scouring device in the guide rail type packaging container comprises a first guide rail, a second guide rail, a driving mechanism, a packaging container box and a traction mechanism.

Compared with the prior art, the test system for the cleanliness of the cleaned packaging container has the following beneficial effects.

1. According to the technical scheme, the technical means of the solution tank, the liquid chromatograph and the all-dimensional flushing device in the packaging container are adopted, so that the cleanliness of the cleaned packaging container can be effectively detected without arranging a detector in the packaging container.

2. According to the technical scheme, the technical means that the liquid outlet of the solution tank is communicated with the liquid inlet of the metering pump is adopted, so that the labor intensity of workers is favorably reduced, and the working efficiency is improved.

3. The technical proposal adopts the metering pump which is a high-pressure metering pump; the liquid outlet of the metering pump is communicated with the high-pressure spray head; the high-pressure spray head is a technical means of the high-pressure spray head with the rod handle, and the high-pressure spray head extends into the packaging container, so that the inner wall of the packaging container can be cleaned while cleaning agent water solution is injected into the packaging container.

4. In the technical scheme, the liquid inlet of the metering pump is communicated with a liquid return pipeline; a liquid inlet of the liquid return pipeline extends into the packaging container and is submerged into the liquid level; the liquid return pipeline is communicated with a second valve in series; the technical means that the first valve is communicated with the liquid outlet of the solution tank in series is adopted, so that when the second valve is opened and the first valve is closed, the inner wall of the packaging container can be repeatedly flushed by the cleaning agent aqueous solution injected into the packaging container.

5. In the technical scheme, the liquid outlet of the metering pump is communicated with the liquid inlet of the sampling container; a fourth valve is communicated with the liquid inlet of the sampling container in series; the liquid inlet of the high-pressure nozzle is communicated with a third valve in series, so that when the second valve is opened, the fourth valve is opened, the first valve is closed and the third valve is closed, the cleaning agent water solution in the packaging container can be injected into the sampling container.

6. According to the technical scheme, multiple operations can be completed only through one metering pump and four valves, so that the cost of the detection equipment is greatly reduced.

7. The technical proposal adopts the technical proposal that the omnibearing flushing device in the packaging container is a guide rail type omnibearing flushing device in the packaging container; the all-round flushing device in guide tracked packaging container includes first guide rail, second guide rail, actuating mechanism, packaging container case, drive mechanism's technical means, so, this all-round flushing device in packaging container can carry out effectual erodeing to packaging container's lateral wall, roof and diapire.

Drawings

The method for testing the cleanliness of a cleaned packaging container and the system for testing the same according to the present invention will be described in further detail with reference to the accompanying drawings and embodiments.

Fig. 1 is a schematic diagram of a flow of the method for testing the cleanliness of the cleaned packaging container and a connection structure of the testing system according to the embodiment.

Fig. 2 is a schematic front view of the omni-directional flushing device inside the guide rail type packaging container according to the first embodiment.

Fig. 3 is a left side view schematically showing the structure of the all-directional flushing device inside the guide rail type packaging container according to the first embodiment (the packaging container is located at the middle section of the guide rail).

Fig. 4 is a left side view schematically showing the structure of the all-directional flushing device inside the guide rail type packaging container according to the first embodiment (the packaging container is located at the left section of the guide rail).

Fig. 5 is a schematic front view showing the structure of an omni-directional flushing device inside a guide rail type packaging container according to a second embodiment of the present invention.

Fig. 6 is a left side view schematically showing the structure of the omni-directional flushing device inside the guide rail type packaging container according to the second embodiment (the packaging container is located at the middle section of the guide rail).

Fig. 7 is a left side view schematically showing the structure of the omni-directional flushing device inside the guide rail type packaging container according to the second embodiment (the packaging container is located at the left section of the guide rail).

Fig. 8 is a front view schematically showing the structure of the first drive mechanism according to the present embodiment.

Fig. 9 is a schematic top view of the first drive mechanism according to the present embodiment.

Fig. 10 is a schematic front view showing the structure of the omni-directional flushing device inside the third rail-type packaging container according to this embodiment.

Fig. 11 is a left side view schematically showing the structure of the all-directional flushing device inside the third rail-type packaging container according to the embodiment (the packaging container is located at the middle section of the rail).

Fig. 12 is a left side view schematically showing the structure of the all-directional flushing device inside the third rail-type packaging container according to the embodiment (the packaging container is located at the left section of the rail).

Fig. 13 is a schematic top view of the first traction mechanism according to the present embodiment.

Fig. 14 is a schematic top view of the second traction mechanism according to the present embodiment.

Fig. 15 is a front view schematically showing the second drive mechanism of the present embodiment.

Fig. 16 is a schematic plan view of the second drive mechanism according to the present embodiment.

Fig. 17 is a schematic sectional view showing a first connection mode of the guide rail and the rolling wheels according to the present embodiment.

Fig. 18 is a schematic sectional view showing a second connection mode of the guide rail and the rolling wheels according to the present embodiment.

Fig. 19 is a schematic sectional view showing a third connection mode of the guide rail and the rolling wheels according to the present embodiment.

Fig. 20 is a schematic sectional view showing a fourth connection mode of the guide rail and the rolling wheel according to the present embodiment.

Fig. 21 is a schematic sectional view showing a fifth connection mode of the guide rail and the rolling wheels according to the present embodiment.

Fig. 22 is a front view configuration diagram (opened state) of the packaging container box of the present embodiment.

Fig. 23 is a schematic bottom view (open state) of the packaging container box of the present embodiment.

Fig. 24 is a front view schematically showing the structure of the first axial positioning member according to the present embodiment.

Fig. 25 is a front view configuration diagram of the first axial positioning member of the present embodiment.

Fig. 26 is a bottom view of the circumferential direction positioning member of the present embodiment.

The reference numerals are explained below.

0-packaging container;

0-1 to the liquid level;

1-a first guide rail;

1-1 to the left section of the first guide rail;

1-2-the middle section of the first guide rail;

1-3 to the right section of the first guide rail;

2-a second guide rail;

2-1 to the left section of the second guide rail;

2-2 to the middle section of the second guide rail;

2-3 to the right section of the second guide rail;

3, driving mechanism;

3-1-linear flexible traction piece;

3-2-a guide member;

3-3 to tension the guide part;

3-4 to a drive component;

3-5 to a fixed seat;

3-6 to a travel switch;

4-packaging the container box;

4-1 to a box body;

4-2 to the case cover;

4-3-hinge;

4-locking;

4-5-locating slot;

4-6 to an axial positioning component;

4-7 to a circumferential positioning component;

5-a traction mechanism;

5-1-a traction shaft;

5-2-rolling wheel;

5-3 to a bearing;

5-4-a traction piece;

5-rotating the joint;

5-6 to a telescopic key shaft;

6-solution tank;

7-a metering pump;

8-sampling container;

9-liquid chromatography detector;

10-a first valve;

11-a second valve;

12 to a third valve;

13 to a fourth valve;

14-high pressure nozzle.

Detailed Description

As shown in fig. 1, the present embodiment provides a method for testing the cleanliness of a packaging container after cleaning, which includes detecting the concentration of a cleaning agent before cleaning of a cleaning agent solution, injecting the cleaning agent solution into a packaging container 0 after cleaning, flushing residues on the inner wall of the packaging container with the cleaning agent solution in the packaging container 0, discharging the cleaning agent solution containing residues in the packaging container 0, and detecting the concentration of the cleaning agent after cleaning of the cleaning agent solution containing residues, wherein the ratio of the concentration of the cleaning agent before cleaning to the concentration of the cleaning agent after cleaning is the cleanliness of the packaging container 0.

According to the embodiment, the concentration of the cleaning agent before cleaning of the cleaning agent solution is detected firstly, then the cleaning agent solution is injected into the cleaned packaging container, the cleaning agent solution in the packaging container washes away residues on the inner wall of the packaging container, the cleaning agent solution containing the residues in the packaging container is discharged, then the concentration of the cleaning agent after cleaning of the cleaning agent solution containing the residues is detected, and the ratio of the concentration of the cleaning agent before cleaning to the concentration of the cleaning agent after cleaning is the cleanliness of the packaging container, so that the cleanliness of the cleaned packaging container can be effectively detected without arranging a detector into the packaging container.

Various modifications of the present embodiment will be described in detail below.

As shown in figures 1 to 26 of the drawings,

the cleaning agent 0-1 is xylene.

The technical means that the cleaning agent is xylene is adopted in the embodiment, so that the detection cost is favorably reduced.

The detergent solution is a detergent aqueous solution.

The technical means that the cleaning agent solution is the cleaning agent aqueous solution is adopted in the embodiment, so that the detection cost is further reduced.

The detergent solution is placed in a solution tank 6.

The technical means that the cleaning agent solution is placed in the solution tank is adopted, so that the method is favorable for safe operation.

The pre-wash detergent concentration is a weight percent concentration or a weight volume concentration. Accordingly, the number of the first and second electrodes,

the concentration of the cleaning agent after washing is weight percentage concentration or weight volume concentration.

In the embodiment, the concentration of the cleaning agent before washing is weight percentage concentration or weight volume concentration; correspondingly, the concentration of the cleaning agent after washing is a technical means of weight percentage concentration or weight volume concentration, so that the intuition of the detection result is favorably improved.

The concentration of the pre-wash detergent in the detergent solution in the solution tank 6 is detected by a liquid chromatography detector 9.

In the embodiment, the technical means of detecting the concentration of the cleaning agent solution in the solution tank before washing by the liquid chromatography detector is adopted, so that the detection result can be subjected to standardized processing, and the comparability of the detection result is improved.

The detergent solution in the solution tank 6 is poured into the washed packaging container 0 by the metering pump 7.

In the embodiment, the technical means of injecting the cleaning agent solution in the solution tank into the cleaned packaging container through the metering pump is adopted, so that the inner wall of the packaging container can be flushed.

The metering pump 7 is a high-pressure metering pump.

The cleaning agent solution in the solution tank 6 is injected into the cleaned packaging container 0 through the metering pump and the high-pressure spray head 14 and sprayed to the inner wall of the packaging container 0, so that the cleaning agent solution in the packaging container 0 washes residues on the inner wall of the packaging container.

It is, of course, also possible that,

the cleaning agent solution injected into the packaging container 0 is sprayed to the inner wall of the packaging container 0 through the metering pump 7 and the high-pressure spray head 14, so that the cleaning agent solution in the packaging container 0 washes away residues on the inner wall of the packaging container.

It is also possible that,

the packaging container 0 is driven to move, so that the cleaning agent solution in the packaging container 0 washes away residues on the inner wall of the packaging container.

In the embodiment, the metering pump is a high-pressure metering pump; injecting the cleaning agent solution in the solution tank into the cleaned packaging container through a metering pump and a high-pressure nozzle and spraying the cleaning agent solution to the inner wall of the packaging container, so that the cleaning agent solution in the packaging container washes residues on the inner wall of the packaging container; and/or spraying the cleaning agent solution injected into the packaging container to the inner wall of the packaging container through a metering pump and a high-pressure spray head, so that the cleaning agent solution in the packaging container washes residues on the inner wall of the packaging container; and/or the packaging container is driven to move, so that the residues on the inner wall of the packaging container are washed by the cleaning agent solution in the packaging container, the inner wall of the packaging container can be thoroughly washed, and the precision of the detection result can be greatly improved.

The volume of the cleaning agent solution injected into the cleaned packaging container 0 accounts for 2-3% of the volume of the packaging container.

In the embodiment, the technical means that the volume of the cleaning agent solution injected into the packaging container after cleaning accounts for 2-3% of the volume of the packaging container is adopted, so that the flushed residues in the packaging container can be ensured to be in a dissolved state.

The packaging container 0 is driven to move by the all-directional flushing device in the packaging container.

The inner side wall, the inner bottom wall and the inner top wall of the packaging container 0 are all washed.

In the embodiment, the packaging container is driven to move by the omnibearing flushing device in the packaging container; the inner side wall, the inner bottom wall and the inner top wall of the packaging container are all scoured by the technical means, so that the scouring efficiency can be greatly improved.

The cleaning agent solution containing residues in the packaging container 0 is discharged into the sampling container 8 by means of the metering pump 7.

In the present embodiment, since the cleaning agent solution containing the residue in the packaging container is discharged into the sampling container by the metering pump, the cleaning agent solution containing the residue can be advantageously detected.

The sampling vessel 8 is a glass flask.

In the present embodiment, the technical means that the sampling vessel is a glass flask is adopted, and therefore, the cost of the detection instrument is favorably reduced.

The amount of the cleaning agent solution discharged into the sampling vessel 8 containing the residue was 95% of the amount of the cleaning agent solution injected into the packaging vessel 0 after the cleaning.

In the present embodiment, since the means that the amount of the cleaning agent solution discharged to the sampling vessel containing the residue is 95% of the amount of the cleaning agent solution injected into the packaging vessel after cleaning is adopted, the accuracy of the detection result can be greatly improved.

The concentration of the cleaning agent solution containing the residue in the sampling vessel 8 after cleaning was measured by the liquid chromatography detector 9.

In the embodiment, the technical means of detecting the concentration of the cleaning agent solution containing residues in the sampling container after cleaning by using the liquid chromatography detector is adopted, so that the cleanliness of the packaging container can be detected without placing the detector in the packaging container.

As shown in fig. 1 to 26, the present embodiment provides a system for testing the cleanliness of a cleaned packaging container, which includes a solution tank 6, a liquid chromatograph 9, and an all-directional flushing device inside the packaging container.

The technical means of the solution tank, the liquid chromatograph and the all-dimensional flushing device in the packaging container are adopted, so that the cleanliness of the cleaned packaging container can be effectively detected without arranging a detector in the packaging container.

Various modifications of the present embodiment will be described in detail below.

As shown in figure 1 of the drawings, in which,

and the liquid outlet of the solution tank 6 is communicated with the liquid inlet of the metering pump 7.

The technical means that the liquid outlet of the solution tank is communicated with the liquid inlet of the metering pump is adopted, so that the technical means is favorable for reducing the labor intensity of workers and improving the working efficiency.

The metering pump 7 is a high-pressure metering pump.

The liquid outlet of the metering pump 7 is communicated with a high-pressure spray head 14.

The high pressure spray head 14 is a high pressure spray head having a stem.

The high-pressure spray head 14 extends into the packaging container.

In the embodiment, the metering pump is a high-pressure metering pump; the liquid outlet of the metering pump is communicated with the high-pressure spray head; the high-pressure spray head is a technical means of the high-pressure spray head with the rod handle, and the high-pressure spray head extends into the packaging container, so that the inner wall of the packaging container can be cleaned while cleaning agent water solution is injected into the packaging container.

And a liquid inlet of the metering pump 7 is communicated with a liquid return pipeline.

And a liquid inlet of the liquid return pipeline extends into the packaging container and is submerged into the liquid level.

The liquid return pipeline is communicated with a second valve 11 in series.

A first valve 10 is communicated with a liquid outlet of the solution tank 6 in series.

In the embodiment, the liquid inlet of the metering pump is communicated with a liquid return pipeline; a liquid inlet of the liquid return pipeline extends into the packaging container and is submerged into the liquid level; the liquid return pipeline is communicated with a second valve in series; the technical means that the first valve is communicated with the liquid outlet of the solution tank in series is adopted, so that when the second valve is opened and the first valve is closed, the inner wall of the packaging container can be repeatedly flushed by the cleaning agent aqueous solution injected into the packaging container.

And a liquid outlet of the metering pump 7 is communicated with a liquid inlet of a sampling container 8.

And a fourth valve 13 is communicated with the liquid inlet of the sampling container 8 in series.

A third valve 12 is communicated with the liquid inlet of the high-pressure spray head 14 in series.

In the embodiment, the liquid outlet of the metering pump is communicated with the liquid inlet of the sampling container; a fourth valve is communicated with the liquid inlet of the sampling container in series; the liquid inlet of the high-pressure nozzle is communicated with a third valve in series, so that when the second valve is opened, the fourth valve is opened, the first valve is closed and the third valve is closed, the cleaning agent water solution in the packaging container can be injected into the sampling container.

This embodiment just can accomplish multinomial work through a measuring pump and four valves, greatly reduced check out test set's cost.

As shown in figures 2 to 26 of the drawings,

the all-round flushing device in the packaging container is a guide rail type all-round flushing device in the packaging container.

The all-dimensional scouring device in the guide rail type packaging container comprises a first guide rail 1, a second guide rail 2, a driving mechanism 3, a packaging container box 4 and a traction mechanism 5.

The packaging container 4 is in rolling connection with the first guide rail 1 and the second guide rail 2.

The packaging container 4 is connected to the pulling device 5.

The traction mechanism 5 is connected with the driving mechanism 3.

In the embodiment, the omnibearing flushing device in the packaging container is adopted and is a guide rail type omnibearing flushing device in the packaging container; the all-dimensional scouring device in the guide rail type packaging container comprises a first guide rail, a second guide rail, a driving mechanism, a packaging container box and a traction mechanism; the packaging container box is in rolling connection with the first guide rail 1 and the second guide rail 2; the packaging container box 4 is connected with the traction mechanism 5; the traction mechanism 5 is connected with the driving mechanism 3, so that the all-dimensional scouring device in the packaging container can effectively scour the side wall, the top wall and the bottom wall of the packaging container.

As shown in figures 2 to 4, 5 to 7 and 10 to 12,

said first guide rail 1 and said second guide rail 2 are juxtaposed apart.

At least one of the first guide rail 1 and the second guide rail 2 has different heights at different positions along the whole length.

The height difference between the first guide rail 1 and the second guide rail 2 at different positions in the whole length is different.

In the embodiment, the first guide rail and the second guide rail are separately juxtaposed; the heights of at least one of the first guide rail and the second guide rail at different positions in the whole length are different; the height difference between the first guide rail and the second guide rail at different positions in the whole length is different, so that the guide rail can enable the packaging container to move, rotate and swing at the same time, and the side wall, the top wall and the bottom wall of the packaging container can be effectively washed.

At least one of the first guide rail 1 and the second guide rail 2 is a curved guide rail.

The bent guide rail is an upward bent guide rail, a downward bent guide rail or an upward and downward bent guide rail.

In the embodiment, at least one of the first guide rail and the second guide rail is a bent guide rail; the bent guide rail is an upward bent guide rail, a downward bent guide rail or an upward and downward bent guide rail, so that various guide rails can be produced according to the requirements of different customers.

The curved guide rail is a cylindrical spiral curved guide rail.

The cylindrical spirally bent guide rail is formed by spirally bending around a cylindrical surface.

In the embodiment, the bent guide rail is a cylindrical spiral bent guide rail; the cylindrical spirally bent guide rail is a guide rail formed by spirally bending around a cylindrical surface, so that the distance between the first guide rail and the second guide rail can be ensured to be equal everywhere.

The cylindrical spiral curved guide rail is a thick cylindrical spiral curved guide rail or a thin cylindrical spiral curved guide rail.

The radius of the thick cylinder is equal to the distance between the first guide rail 1 and the second guide rail 2.

The diameter of the thin cylinder is equal to the distance between the first guide rail 1 and the second guide rail 2.

The curved guide rail is one of a thick cylindrical spiral upward-bending guide rail, a thick cylindrical spiral downward-bending guide rail, a thick cylindrical spiral upward-bending guide rail, a thin cylindrical spiral downward-bending guide rail and a thin cylindrical spiral upward-bending guide rail.

In the embodiment, the cylindrical spiral curved guide rail is adopted to be a thick cylindrical spiral curved guide rail (which is beneficial to reducing the production cost) or a thin cylindrical spiral curved guide rail (which can ensure that the first guide rail and the second guide rail are equal in length and is beneficial to the smooth rotation of the packaging container); the radius of the thick cylinder is equal to the distance between the first guide rail and the second guide rail; the diameter of the thin cylinder is equal to the distance between the first guide rail and the second guide rail; the curved guide rail is one of a thick cylindrical spiral upward-bending guide rail, a thick cylindrical spiral downward-bending guide rail, a thick cylindrical spiral upward-bending guide rail, a thin cylindrical spiral downward-bending guide rail and a thin cylindrical spiral upward-bending guide rail, so that various guide rails can be produced according to actual conditions.

The side surfaces of the first guide rail 1 and the second guide rail 2 are smooth surfaces, rough surfaces or tooth surfaces.

In the embodiment, by adopting the technical means that the side surfaces of the first guide rail and the second guide rail are smooth surfaces (which is beneficial to reducing the abrasion of the guide rails) or rough surfaces (which is beneficial to the rotation of the packaging container) or tooth surfaces (which is more beneficial to the rotation of the packaging container), various guide rails can be produced according to the requirements of different customers.

As shown in figures 17 to 21 of the drawings,

the cross sections of the first guide rail 1 and the second guide rail 2 are right-angled, round, oval, rectangular, trapezoidal and concave.

In the embodiment, the technical means that the cross sections of the first guide rail and the second guide rail are right-angled, circular, oval, rectangular, trapezoidal and concave are adopted, so that the derailment phenomenon is prevented.

The first guide rail 1 is considered as three sections.

The three sections of the first guide rail 1 are respectively a first guide rail left section 1-1, a first guide rail middle section 1-2 and a first guide rail right section 1-3. Accordingly, the number of the first and second electrodes,

the second guide rail 2 is considered as three sections.

The three sections of the second guide rail 2 are respectively a second guide rail left section 2-1, a second guide rail middle section 2-2 and a second guide rail right section 2-3.

The left section 2-1 of the second guide rail is gradually higher than the left section 1-1 of the first guide rail from right to left.

The right section 2-3 of the second guide rail is gradually lower than the right section 1-3 of the first guide rail from left to right.

The second guide rail middle section 2-2 is parallel to the first guide rail middle section 1-2.

Of course, it is also possible to dispense with the second rail center section 2-2 and the first rail center section 1-2.

The first guide rail 1 is considered as two sections.

The two sections of the first guide rail 1 are a first guide rail left section and a first guide rail right section respectively. Accordingly, the number of the first and second electrodes,

the second guide rail 2 is considered as two sections.

The two sections of the second guide rail 2 are a second guide rail left section and a second guide rail right section respectively.

The length of the first guide rail left section 1-1, the length of the first guide rail middle section 1-2, the length of the first guide rail right section 1-3, the length of the second guide rail left section 2-1, the length of the second guide rail middle section 2-2 and the length of the second guide rail right section 2-3 are equal.

In the embodiment, the first guide rail is taken as three sections; the three sections of the first guide rails are respectively a first guide rail left section, a first guide rail middle section and a first guide rail right section; correspondingly, the second guide rail is regarded as three sections; the three sections of the second guide rails are respectively a left section of the second guide rail, a middle section of the second guide rail and a right section of the second guide rail; the left section of the second guide rail is gradually higher than the left section of the first guide rail from right to left; the right section of the second guide rail is gradually lower than the right section of the first guide rail from left to right; the middle section of the second guide rail is parallel to the middle section of the first guide rail; the length of the left section of the first guide rail, the length of the middle section of the first guide rail, the length of the right section of the first guide rail, the length of the left section of the second guide rail, the length of the middle section of the second guide rail and the length of the right section of the second guide rail are equal, so that the inner wall of the packaging container is favorably and uniformly flushed.

In the embodiment, the first guide rail is adopted and is regarded as two sections; the two sections of the first guide rails are respectively a first guide rail left section and a first guide rail right section; correspondingly, the second guide rail is regarded as two sections; the two sections of the second guide rails are respectively the technical means of the left section of the second guide rail and the right section of the second guide rail, so that the occupied space of the guide rails is reduced, and the production cost is reduced.

As shown in figures 2 to 4 of the drawings,

the first guide rail 1 is a straight guide rail.

The second guide rail 2 is a thick cylindrical spiral up-and-down bent guide rail.

In the embodiment, the first guide rail is a straight guide rail; the second guide rail is a technical means of a thick cylindrical spiral up-and-down bending guide rail, so that the production cost of the guide rail is low.

As shown in figures 5 to 7 of the drawings,

the first guide rail 1 is a thick cylindrical spiral downward-bending guide rail.

The second guide rail 2 is a thick cylindrical spiral upward-bending guide rail.

In the embodiment, the first guide rail is a thick cylindrical spiral downward-bending guide rail; the second guide rail is a technical means of a thick cylindrical spiral upward-bending guide rail, so that the packaging container rotates smoothly.

As shown in figures 10 to 12 of the drawings,

the first guide rail 1 is a thin cylindrical spiral up-and-down bending guide rail.

The second guide rail 2 is a thin cylindrical spiral up-and-down bent guide rail.

In the embodiment, the first guide rail is a thin cylindrical spiral up-and-down bent guide rail; the second guide rail is a technical means of a thin cylindrical spiral up-and-down bending guide rail, so that the packaging container can rotate more smoothly.

As shown in figures 8 to 9 and 15 to 16,

the driving mechanism 3 comprises a linear flexible traction piece 3-1, a guide component 3-2, a tensioning guide component 3-3 and a driving component 3-4.

The driving part 3-4 sequentially winds around the tensioning guide part 3-3 and the guide part 3-2 through the linear flexible traction part 3-1 and is in driving connection with the rolling body.

The embodiment adopts the driving mechanism which comprises a linear flexible traction piece, a guide part, a tensioning guide part and a driving part; the driving part sequentially winds the tensioning guide part, the guide part and the rolling body through the linear flexible traction part and is in driving connection, so that the driving mechanism can enable the packaging container to move, rotate and swing simultaneously under the action of the guide rail, and can effectively wash the side wall, the top wall and the bottom wall of the packaging container.

One of said drive members 3-4.

The number of the guide members 3-2 is two.

Two of the tension guide members 3-3 are provided.

Two of the guide members 3-2 are distributed in the horizontal direction.

Two of the tension guide members 3-3 are distributed in the horizontal direction.

The two tensioning guide members 3-3 are located below the two guide members 3-2, respectively.

The driving part 3-4 is positioned at the lower middle part of the two tensioning guide parts 3-3.

The two guide members 3-2, the two tensioning guide members 3-3 and the drive member 3-4 are located in the same vertical mid-plane.

The driving part 3-4 is in driving connection with the motor.

The embodiment adopts one driving part; the number of the guide parts is two; the number of the tensioning guide parts is two; the two guide parts are distributed along the horizontal direction; the two tensioning guide parts are distributed along the horizontal direction; the two tensioning guide components are respectively positioned below the two guide components; the driving part is positioned at the lower middle part of the two tensioning guide parts; the two guide parts, the two tensioning guide parts and the driving part are positioned in the same vertical middle plane; the driving part is connected with the motor in a driving way, so that the packaging container can be driven to move, rotate and swing simultaneously by only one motor.

As shown in figures 8 to 9 of the drawings,

four linear flexible traction elements 3-1 are provided.

The four linear flexible traction elements 3-1 are divided equally into two groups.

Two groups of said linear flexible traction elements 3-1 are symmetrically distributed about said vertical mid-plane.

One end of a group of the linear flexible traction elements 3-1 is connected with the driving part 3-4.

After the driving part 3-4 winds for a plurality of circles, a group of linear flexible traction pieces 3-1 sequentially wind around one tensioning guide part 3-3 and one guide part 3-2 and then wrap the rolling bodies.

The other end of one group of linear flexible traction pieces 3-1 is connected with a fixed seat 3-5.

One end of another group of the linear flexible traction elements 3-1 is connected with the driving part 3-4.

Another group of the linear flexible traction elements 3-1 pass another tensioning guide element 3-3 and another guide element 3-2 in turn after the driving element 3-4 is wound for a plurality of circles and then wrap the rolling elements.

The other end of the other group of linear flexible traction pieces 3-1 is connected with the other fixed seat 3-5.

The inlets and outlets of the two groups of linear flexible traction pieces 3-1 are positioned on the same side of the driving part 3-4.

The inlet and outlet directions of the two groups of linear flexible traction pieces 3-1 are opposite.

When the rolling bodies are in the middle part,

the length of the multi-circumference linear flexible traction element 3-1 corresponds to half of the length of the guide rail.

In the embodiment, one or four linear flexible traction pieces are adopted; the four linear flexible traction pieces are divided into two groups on average; two groups of the linear flexible traction members are symmetrically distributed about the vertical mid-plane; one end of the linear flexible traction piece is connected with the driving part; a group of linear flexible traction pieces sequentially pass through one tensioning guide part and one guide part after the driving part winds for a plurality of circles and then wrap the rolling bodies; the other end of the linear flexible traction piece is connected with a fixed seat; one end of the other group of linear flexible traction pieces is connected with the driving part; another group of linear flexible traction pieces sequentially pass another tensioning guide part and another guide part after the driving part winds for a plurality of circles and then pocket the rolling bodies; the other end of the linear flexible traction piece is connected with the other fixed seat, so that the stability of the movement of the packaging container is ensured.

As shown in figures 15 to 16 of the drawings,

one of the linear flexible traction elements 3-1 is provided.

The middle part of one of the linear flexible traction elements 3-1 is in driving connection with the driving part 3-4.

Two ends of one linear flexible traction piece 3-1 respectively and sequentially bypass the tensioning guide part 3-3 and the guide part 3-2 and then are connected with a traction mechanism 5.

In the embodiment, the middle part of one linear flexible traction piece is in driving connection with the driving part; and two ends of one linear flexible traction piece are respectively connected with the traction mechanism after bypassing the tensioning guide part and the guide part in sequence, so that the flexibility of the movement of the packaging container is favorably ensured.

The traction means 5 are connected to the rolling elements.

The fixed seat 3-5 is provided with a travel switch 3-6.

The travel switches 3-6 are electrically connected with the motor through a controller.

In the embodiment, the fixed seat is provided with the travel switch; the travel switch is electrically connected with the motor through a controller, so that the automation of washing the packaging container can be realized.

The linear flexible traction element 3-1 is a rope, a belt or a strip.

The rope is a steel wire rope or a nylon rubber rope.

The belt is a nylon rubber belt.

The nylon rubber belt is a nylon rubber flat belt or a nylon rubber toothed belt.

The strip is a chain.

The guide component 3-2 is a guide roller or a guide pulley or a guide gear or a guide chain wheel.

The tensioning guide component 3-3 is a tensioning guide roller or a tensioning guide pulley or a tensioning guide gear or a tensioning guide chain wheel.

The drive means 3-4 are drive rollers or drive pulleys or drive gears or drive sprockets.

In the embodiment, the linear flexible traction piece is a rope, a belt or a strip; the rope is a steel wire rope or a nylon rubber rope; the belt is a nylon rubber belt; the nylon rubber belt is a nylon rubber flat belt or a nylon rubber toothed belt; the strip is a chain; the guide component is a guide roller or a guide pulley or a guide gear or a guide chain wheel; the tensioning guide component is a tensioning guide roller or a tensioning guide pulley or a tensioning guide gear or a tensioning guide chain wheel; the driving part is a technical means of a driving roller or a driving pulley or a driving gear or a driving chain wheel, so that various driving mechanisms can be produced according to actual conditions.

As shown in figure 13 of the drawings, in which,

the traction mechanism 5 comprises two traction shafts 5-1.

The two traction shafts 5-1 are coaxially and rotatably connected through a traction piece 5-4.

The two traction shafts 5-1 are respectively connected with the traction piece 5-4 in a rotating way through bearings 5-3.

Rolling wheels 5-2 are respectively fixed on the two traction shafts 5-1.

In the embodiment, the traction mechanism comprises two traction shafts; the two traction shafts are coaxially and rotationally connected through a traction piece; the two traction shafts are respectively fixed with a technical means of rolling wheels, and the diameters of the rolling wheels are smaller than the diameter of the packaging container, so that the traction mechanism not only can improve the motion stability of the packaging container, but also can greatly increase the rotation frequency of the packaging container and greatly improve the scouring efficiency of the packaging container.

According to the embodiment, the technical means that the two traction shafts are respectively in rotating connection with the traction piece through the bearings is adopted, so that the flexibility of rotation between the traction shafts and the traction piece is greatly increased.

As shown in figure 14 of the drawings,

at least one of the two rolling wheels 5-2 is fixedly and telescopically connected with the traction shaft 5-1 in the circumferential direction through a telescopic key shaft 5-6.

In the embodiment, as the technical means that at least one of the two rolling wheels is fixedly and telescopically connected with the traction shaft in the circumferential direction through the telescopic key shaft is adopted, the packaging container can normally move even if the distance between the two guide rails changes.

The traction piece 5-4 is in a rectangular frame body.

The two traction shafts 5-1 are respectively arranged in the middle of the two wide sides of the traction piece 5-4.

In the embodiment, the shape of the traction piece is a rectangular frame body; the two traction shafts are respectively arranged in the middle of the two wide sides of the traction piece, so that the traction mechanism can be ensured to be stressed evenly.

And the middle parts of two long sides of the traction piece 5-4 are respectively provided with a rotary joint 5-5.

According to the embodiment, the technical means that the rotary joints are respectively arranged in the middle of the two long edges of the traction piece is adopted, so that the torsion of the linear flexible traction piece can be greatly reduced, and the service life of the linear flexible traction piece is prolonged.

The side surface of the rolling wheel 5-2 is a smooth surface or a rough surface or a tooth surface.

In the embodiment, the technical means that the side surface of the rolling wheel is a smooth surface (which is beneficial to reducing the abrasion of the rolling wheel) or a rough surface (which is beneficial to the rotation of the packaging container) or a tooth surface (which is more beneficial to the rotation of the packaging container) is adopted, so that various traction mechanisms can be produced according to the requirements of different customers.

And grooves are formed in the side surface of the rolling wheel 5-2 along the circumferential direction.

As shown in figures 17 to 21 of the drawings,

the cross section of the groove is semicircular, semielliptical, rectangular or trapezoidal.

The inner ends of the two traction shafts 5-1 are fixedly connected with the rolling bodies.

The two rolling wheels 5-2 are respectively in rolling connection with the first guide rail 1 and the second guide rail 2.

In the embodiment, the groove is arranged on the side surface of the rolling wheel along the circumferential direction; the cross section of the groove is in a semicircular shape, a semi-elliptical shape, a rectangular shape or a trapezoidal shape, so that the derailment phenomenon can be prevented.

As shown in figures 22 to 26 of the drawings,

the rolling elements are packing containers 4. Of course, the packaging container 0 is also possible.

The packaging container box 4 comprises a box body 4-1 and a box cover 4-2.

The openings of the box body 4-1 and the box cover 4-2 are parallel to or coincident with the axis of the packaging container box 4.

Positioning grooves 4-5 are respectively and correspondingly distributed in the box body 4-1 and the box cover 4-2 along the axial direction of the packaging container box 4.

The housing 4-1 is provided with axial positioning means 4-6 and circumferential positioning means 4-7.

The axial positioning component 4-6 and the circumferential positioning component 4-7 are connected with the positioning groove 4-5 in an inserting mode.

In the embodiment, the rolling bodies are packaging container boxes; the packaging container box comprises a box body and a box cover; the openings of the box body and the box cover are parallel to or coincided with the axis of the packaging container box; positioning grooves are respectively and correspondingly distributed in the box body and the box cover along the axial direction of the packaging container box; the box body is provided with an axial positioning component and a circumferential positioning component; the axial positioning component and the circumferential positioning component are connected with the positioning groove in an inserting and combining manner, so that the packaging container box can accommodate packaging containers of different specifications and perform scouring treatment on the inner walls of the packaging containers of different specifications.

There are two of the axial positioning members 4-6.

There are a plurality of pairs of said circumferential positioning members 4-7.

The bore diameter of each pair of said circumferential positioning members 4-7 is the same.

The apertures of the circumferential positioning members 4-7 are different for different pairs.

The two axial positioning parts 4-6 are respectively pressed with the two ends of the packaging container.

Each pair of said circumferential positioning members 4-7 is fitted in a side of the packaging container.

In the embodiment, two axial positioning components are adopted; the circumferential positioning components are provided with a plurality of pairs; the hole diameter of each pair of the circumferential positioning parts is the same; different technical means for the hole diameters of the circumferential positioning components ensure stable fixation of packaging containers of different specifications.

The box body 4-1 and the box cover 4-2 are connected through a hinge 4-3 and a lock 4-4.

Two hinges 4-3 are provided.

The two hinges 4-3 are respectively arranged at two ends of one side of the box body 4-1 and one side of the box cover 4-2.

The two hinges 4-3 are coaxial and parallel to the axis of the packaging container 4.

There are two locks 4-4.

The locking positions of the two locks 4-4 are respectively arranged at two ends of the other side of the box body 4-1 and the box cover 4-2.

The line connecting the catches of the two locks 4-4 is parallel to the axis of the packaging container 4.

In the embodiment, the box body and the box cover are connected through the hinge and the lock; two hinges are provided; the two hinges are respectively arranged at two ends of one side of the box body and one side of the box cover; the two hinges are coaxial and parallel to the axis of the packaging container box; two locks are provided; the lock positions of the two locks are respectively arranged at two ends of the other side of the box body and the box cover; the connecting line of the locking positions of the two locks is parallel to the axis of the packaging container, so that the overall strength and rigidity of the packaging container are improved.

The middle parts of the two ends of the box body 4-1 respectively protrude outwards along the radial direction to form plate head parts.

The plate head is of a single-layer plate structure.

The middle parts of the two ends of the box cover 4-2 are respectively inwards recessed along the radial direction to form plate opening parts.

The plate opening part is of a double-layer plate structure.

The gap between the double plates corresponds to the thickness of the single plate.

The plate head is clamped in the plate opening.

In the embodiment, the middle parts of the two ends of the box body are respectively protruded outwards along the radial direction to form the plate head parts; the plate head part is of a single-layer plate structure; the middle parts of the two ends of the box cover are respectively inwards recessed along the radial direction to form plate opening parts; the plate opening part is of a double-layer plate structure; the gap between the double-layer plates corresponds to the thickness of the single-layer plate; the technical means that the plate head is clamped into the plate opening is favorable for further improving the overall strength and rigidity of the packaging container.

The cross-sectional shape of the packaging container 4 is circular or square.

The positioning groove 4-5 of the box body 4-1 and the positioning groove 4-5 of the box cover 4-2 are combined into a circular positioning groove or a square annular positioning groove.

The axial positioning components 4-6 are axial positioning plates or axial positioning rods.

The circumferential positioning members 4-7 are circumferential positioning rings.

The axial positioning plate is a round axial positioning plate or a square axial positioning plate.

The length of the axial positioning rod corresponds to the diameter of the circular cross section or the side length of the square cross section.

The circumferential positioning ring is a concentric circle edge circular ring or a concentric square edge circular ring.

The packaging container 4 is in rolling connection with the first guide rail 1 and the second guide rail 2.

In the embodiment, the cross section of the packaging container box is circular or square; the positioning groove of the box body and the positioning groove of the box cover are combined into a circular positioning groove or a square annular positioning groove; the axial positioning component is an axial positioning plate or an axial positioning rod; the circumferential positioning component is a circumferential positioning ring; the axial positioning plate is a round axial positioning plate or a square axial positioning plate; the length of the axial positioning rod corresponds to the diameter of the circular cross section or the side length of the square cross section; the circumferential positioning ring is a technical means of a concentric circle edge circular ring or a concentric square edge circular ring, so that various packaging container boxes can be produced according to the requirements of different customers.