1. An online sampling device for color master batches comprises a storage tank and a sampling mechanism communicated with the interior of the storage tank; the method is characterized in that: the sampling mechanism comprises a sampling barrel, a filter screen, a sampling pipe assembly, a discharge pipe, a discharge valve and a negative pressure generator, wherein the filter screen is arranged in the sampling barrel and divides the interior of the sampling barrel into a sampling cavity and an air suction cavity; a weighing sensor is fixedly arranged at the inner bottom of the sampling cavity, and a weighing plate is placed at the top of the weighing sensor; the sampling tube subassembly includes the sample person in charge with the sample chamber intercommunication, one end with storage tank intercommunication, the other end with the sample is responsible for a plurality of sample branch pipes that communicate and distribute for from top to bottom, sets up sample valve on the sample branch pipe.

2. The online color masterbatch sampling device of claim 1, wherein: and a control panel is fixedly mounted on the outer wall of one side of the sampling barrel.

3. The online color masterbatch sampling device of claim 1, wherein: the discharging pipe is arranged obliquely downwards, and the upper end of the discharging pipe is communicated with the sampling cavity.

4. The online color masterbatch sampling device of claim 1, wherein: a discharge hole is formed in the lower part of one side of the sampling barrel, and the discharge pipe is communicated with the sampling cavity through the discharge hole; the upper surface of the weighing plate is arranged downwards along the direction from the filter screen to the discharge port in an inclined manner, the lowest height of the upper surface of the weighing plate is greater than or equal to the lowest height of the discharge port, and the lowest height of the upper surface of the weighing plate is smaller than the highest height of the discharge port.

5. The online color masterbatch sampling device of claim 1, wherein: and the lower part of one side of the sampling bucket is provided with an air suction opening, and the air suction pipe is communicated with the air suction cavity through the air suction opening.

6. The online color masterbatch sampling device of claim 1, wherein: the top of sampling bucket is provided with the feed inlet, the sample is responsible for and is passed through feed inlet and sample chamber intercommunication.

7. The online color masterbatch sampling device of claim 1, wherein: the sampling main pipe is vertically arranged.

8. The online color masterbatch sampling device of claim 1, wherein: the sampling branch pipes are provided with more than three.

9. The online color masterbatch sampling device of claim 1, wherein: the sampling branch pipe is horizontally arranged.

10. The online color masterbatch sampling device of claim 1, wherein: the sampling branch pipe is arranged obliquely downwards, and the lower end of the sampling branch pipe is communicated with the sampling main pipe.

Background

The color master is also called color master batch, also called color species, is a special colorant for novel high polymer materials, and is also called a pigment preparation; the color master batch is mainly used on plastics, consists of three basic elements of pigment or dye, carrier and additive, is an aggregate prepared by uniformly loading an excessive amount of pigment into resin, and can be called pigment concentrate, so that the tinting strength of the color master batch is higher than that of the pigment; during processing, a small amount of color master batch is mixed with uncolored resin, and colored resin or products with designed pigment concentration can be obtained.

In the process of manufacturing the color master batch, the color master batch finished product is not in accordance with the quality standard easily because the raw materials do not reach the standard or impurities are added; therefore, in order to ensure the quality of the color master batch finished product, the color master batch finished product on the color master batch production line needs to be sampled and detected regularly; the existing sampling mode is that a tester directly holds a sampling container to sample in batches at a discharge port of a storage vat, and then sends a sample to a laboratory to perform quantitative sampling by using a quantitative container, and finally detects a certain amount of sample.

The color master batch sampling device in the prior art can sample and detect color master batches with different depths in a storage tank, for example, a high-precision sampling system for a color master batch production line disclosed in a Chinese patent application No. 202110013502.8 comprises a storage barrel and a sampling device, wherein the sampling device comprises a sampler, a driving mechanism, an elastic scraper and a receiving tank; although this patent can be passed through sampler and actuating mechanism and take a sample to the masterbatch finished product of the different degree of depth in the storage vat, the capacity of the sampler of this patent is fixed, so can only get quantitative masterbatch finished product at every turn, can not sample the masterbatch of corresponding volume according to the required amount that the experiment was detected this time.

Disclosure of Invention

In view of the above, the invention aims to provide an online color masterbatch sampling device which can sample color masterbatch at different depths in a storage tube and can sample corresponding amounts according to required amounts.

In order to solve the technical problems, the technical scheme of the invention is as follows:

an online sampling device for color master batches comprises a storage tank for storing the color master batches and a sampling mechanism communicated with the interior of the storage tank; the sampling mechanism comprises a sampling barrel, a filter screen, a sampling pipe assembly, a discharge pipe, a discharge valve and a negative pressure generator, wherein the filter screen is arranged in the sampling barrel and divides the interior of the sampling barrel into a sampling cavity and an air suction cavity; a weighing sensor is fixedly arranged at the inner bottom of the sampling cavity, and a weighing plate which divides the sampling cavity into two parts which are not communicated up and down is arranged at the top of the weighing sensor; the sampling tube subassembly includes the sample person in charge with sample chamber intercommunication, one end with storage tank intercommunication, the other end with the sample person in charge intercommunication, and for distributing from top to bottom, and with a plurality of sample branch pipes that the inside different degree of depth of storage tank is corresponding set up sample branch pipe is close to one of storage tank and serves the sample valve.

Furthermore, a control panel is fixedly mounted on the outer wall of one side of the sampling barrel.

Further, the discharging pipe is arranged obliquely downwards, and the upper end of the discharging pipe is communicated with the sampling cavity.

Further, a discharge hole is formed in the lower portion of one side of the sampling barrel, and the discharge pipe is communicated with the sampling cavity through the discharge hole; the upper surface of the weighing plate is arranged downwards along the direction from the filter screen to the discharge port in an inclined manner, the lowest height of the upper surface of the weighing plate is greater than or equal to the lowest height of the discharge port, and the lowest height of the upper surface of the weighing plate is smaller than the highest height of the discharge port.

Furthermore, the lower part of one side of the sampling bucket is provided with an air exhaust opening, and the air exhaust pipe is communicated with the air exhaust cavity through the air exhaust opening.

Further, the top of sampling bucket is provided with the feed inlet, the sample is responsible for and is passed through feed inlet and sample chamber intercommunication.

Further, the sampling main pipe is vertically arranged.

Furthermore, the sampling branch pipes are provided with more than three.

Further, the sampling branch pipe is horizontally arranged.

Further, the sampling branch pipe is arranged obliquely downwards, and the lower end of the sampling branch pipe is communicated with the sampling main pipe.

The technical effects of the invention are mainly embodied as follows: can carry the masterbatch that the storage tank corresponds the degree of depth to the sample chamber through sample branch pipe, sample person in charge, sample valve and negative pressure generator to can sample the masterbatch of the inside different degree of depth of storage tank, rethread weighing sensor and weighing plate can be according to the masterbatch of required amount sample corresponding volume.

Drawings

FIG. 1 is a schematic structural diagram according to a first embodiment of the present invention;

FIG. 2 is a schematic cross-sectional view of the sampling barrel of FIG. 1;

FIG. 3 is a schematic structural view of the sampling tube assembly of FIG. 1;

fig. 4 is a schematic structural diagram of a second embodiment of the present invention.

Detailed Description

The following detailed description of the embodiments of the present invention is provided in order to make the technical solution of the present invention easier to understand and understand.

In the present embodiment, it should be understood that the terms "middle", "upper", "lower", "top", "right", "left", "above", "back", "middle", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of describing the present invention, and do not indicate or imply that the referred devices or elements must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

In the present embodiment, if the connection or fixing manner between the components is not specifically described, the connection or fixing manner may be a bolt fixing manner, a pin connecting manner, or the like, which is commonly used in the prior art, and therefore, details thereof are not described in the present embodiment.

Example one

An online sampling device for color master batches is shown in figures 1-3 and comprises a storage tank 1 for storing the color master batches and a sampling mechanism 2 communicated with the interior of the storage tank 1; sampling mechanism 2 includes sampling bucket 21, sets up sampling bucket 21's inside, and handle sampling bucket 21's inside is cut apart into the filter screen 22 of sampling chamber 211 and aspirating chamber 212, sets up sampling bucket 21's top and with the sampling tube subassembly 23 of sampling chamber 211 intercommunication sets up one side lower part of sampling bucket 21 and with the discharging pipe 24 of sampling chamber 211 intercommunication sets up the opposite side lower part of sampling bucket 21 and with the aspirating tube 25 of aspirating chamber 212 intercommunication sets up discharging pipe 24 is close to one of sampling bucket 1 and serves bleeder valve 26, sets up the negative pressure generator 27 of the one end of sampling bucket 21 is kept away from to the aspirating tube 25. The discharge pipe 24 is arranged obliquely downwards, and the upper end of the discharge pipe 24 is communicated with the sampling cavity 211. The masterbatch of being convenient for sample barrel 1 inside carries out the ejection of compact through discharging pipe 24.

A weighing sensor 2111 is fixedly installed at the inner bottom of the sampling cavity 211, and a weighing plate 2112 which divides the sampling cavity 211 into an upper part and a lower part which are not communicated with each other is arranged at the top of the weighing sensor 2111.

And a control panel 213 is fixedly arranged on the outer wall of one side of the sampling barrel 21. Bleeder valve 26, negative pressure generator 27, weighing sensor 2111 and sample valve 233 all with control panel 213 electric connection, just negative pressure generator 27 carries out the interlocking setting through control panel 213 and bleeder valve 26, and when negative pressure generator 27 was not in the closure state, bleeder valve 26 could not be opened, and bleeder valve 26 was not in the closure state, and negative pressure generator 27 could not be opened.

A discharge hole 214 is formed in the lower part of one side of the sampling barrel 21, and the discharge pipe 24 is communicated with the sampling cavity 211 through the discharge hole 214; an air suction opening 215 is arranged at the lower part of one side of the sampling bucket 21, and the air suction pipe 25 is communicated with the air suction cavity 212 through the air suction opening 215. The top of sampling bucket 21 is provided with feed inlet 216, sample and be responsible for 231 and sample chamber 211 intercommunication through feed inlet 216. The upper surface of the weighing plate 2112 is arranged downwards along the direction from the filter screen 22 to the discharge port 214 in an inclined manner, the lowest height of the upper surface of the weighing plate 2112 is greater than or equal to the lowest height of the discharge port 214, and the lowest height of the upper surface of the weighing plate 2112 is smaller than the highest height of the discharge port 214. The masterbatch sample after finishing weighing can be along the inside of the top slope landing of weighing plate 2112 to discharge pipe 24 is got into through discharge port 214 to the outside of sampling bucket 21 is discharged to through discharge pipe 24 at last.

The sample tube assembly 23 includes the sample that communicates with sample chamber 211 and is responsible for 231, one end with storage tank 1 intercommunication, the other end with the sample be responsible for 231 intercommunication, and for distribute from top to bottom and with a plurality of sample branch pipes 232 that the inside different degree of depth of storage tank is corresponding set up sample branch pipe 232 is close to one of storage tank 1 and serves a sample valve 233.

In this embodiment, the sampling main pipe 231 is vertically disposed.

In this embodiment, the sampling manifold 232 is horizontally disposed.

In this embodiment, six sampling branches 232 are provided.

In this embodiment, the discharging valve 26 and the sampling valve 233 are electric ball valves of model Q941F, the negative pressure generator 27 is a vacuum pump of model OLF550AFT, the weighing sensor 2111 is a high-precision weighing sensor of model DLLF, and the control panel 213 is a PLC controller of model S7-300.

A working method of the color master batch online sampling device comprises the following steps:

1) the staff sets up the sampling volume of the color masterbatch and chooses the sampling branch 232 corresponding to the depth of the interior of the material storage tank 1 on the control panel 213, and then presses the sampling button on the control panel 231;

2) the control panel 213 automatically controls to open the sampling valve 233 on the corresponding sampling branch 232, and then automatically controls to open the negative pressure generator 27; under the action of self gravity and the suction force of the negative pressure generator 27, the color master batch in the storage tank 1 enters the sampling cavity 211 along the sampling branch pipe 232 and the sampling main pipe 231 and falls to the top of the weighing plate 2112, the weighing sensor 2111 samples the color master batch falling to the weighing plate 2112 for weight detection, when the weighing sensor 2111 detects that the weight of the color master batch of the weighing plate 2112 reaches a set value, the control panel 213 immediately and automatically closes the sampling valve 233 on the corresponding sampling branch pipe 232, and the negative pressure generator 27 is closed after 3-5S delay;

3) the staff puts the container that is used for receiving the masterbatch sample to the exit of discharging pipe 24, and then manually opens bleeder valve 26 on control panel 213, and the masterbatch sample in the sample chamber 211 falls to the container in through discharge gate 214 and discharging pipe 24, and the staff again manually closes bleeder valve 26 on control panel 213 after the equal ejection of compact of masterbatch sample in the sample chamber 211 finishes.

Example two

As shown in fig. 4, unlike the first embodiment, the sampling branch pipe 232 of the present embodiment is disposed obliquely downward, and the lower end of the sampling branch pipe 232 is communicated with the sampling main pipe 231.

The technical effects of the invention are mainly embodied as follows: can carry the masterbatch that the storage tank corresponds the degree of depth to the sample chamber through sample branch pipe, sample person in charge, sample valve and negative pressure generator to can sample the masterbatch of the inside different degree of depth of storage tank, rethread weighing sensor and weighing plate can be according to the masterbatch of required amount sample corresponding volume.

The above are only typical examples of the present invention, and besides, the present invention may have other embodiments, and all the technical solutions formed by equivalent substitutions or equivalent changes are within the scope of the present invention as claimed.