1. A water quality detection sampling system for detecting the water quality of a water storage part is characterized by comprising:

a sampling container (2) configured to store a water sample extracted from the water storage portion as a detection sample;

-a first line (a) configured to be connected between the water reservoir and the sampling container (2), having the following operating conditions: a blocking state, a water intaking state, a draining state and a flushing state, wherein in the blocking state the first line (a) is configured to block the flow of water samples between the water storage and the sampling container (2), in the water intaking state the first line (a) is configured to flow water samples from the water storage to the sampling container (2), in the draining state the first line (a) is configured to flow water samples from the sampling container (2) to the water storage, and in the flushing state the first line (a) is configured to flow water samples from the water storage back to the water storage after passing through at least a portion of the first line (a);

at least one control valve, arranged on the first circuit (A), configured to switch the operating state of the first circuit (A); and

-control means, in signal connection with said at least one control valve, configured to control the action of said at least one control valve to control in which of said operating states said first circuit (a) is.

2. The water quality testing sampling system of claim 1,

the first pipeline (A) comprises a first branch (A1), a second branch (A2) and a third branch (A3), one end of the first branch (A1), one end of the second branch (A2) and one end of the third branch (A3) are communicated with each other, the other end of the first branch (A1) is used for being communicated with the water storage part, the other end of the second branch (A2) is used for being communicated with the water storage part, and the other end of the third branch (A3) is communicated with the sampling container (2);

the water quality detection sampling system further comprises a water pump (6), wherein the water pump (6) is arranged on the first branch (A1) and is in signal connection with the control device, and the control device is configured to control whether the water pump (6) extracts a water sample from the water storage part;

in the blocking state, the at least one control valve controls the disconnection of the second branch (a2) and the third branch (A3); in the water intake state, the at least one control valve controls the first branch (A1) to be in communication with the third branch (A3) to place the sampling container (2) and the water reservoir in communication with the third branch (A3) through the first branch (A1); in the draining state, the at least one control valve controls the connection of the third branch (A3) and the second branch (A2) to put the sampling container (2) in communication with the water reservoir through the third branch (A3) and the second branch (A2); in the flushing state, the at least one control valve controls the first branch (a1), the second branch (a2) to be connected and form a circulation loop with the water reservoir, and controls the third branch (A3) to be disconnected.

3. The water quality testing sampling system according to claim 2, characterized in that the at least one control valve comprises a first control valve (31) and a second control valve (32), the first control valve (31) is arranged on the second branch (A2) to control the on-off of the second branch (A2), and the second control valve (32) is arranged on the third branch (A3) to control the on-off of the third branch (A3).

4. A water quality testing sampling system according to claim 3, further comprising a manual valve (33) disposed on the third branch (a3) between the second control valve (32) and the sampling vessel (2).

5. The water quality detection sampling system according to claim 1, further comprising a liquid level detection device in signal connection with the control device, the liquid level detection device being configured to detect a liquid level of the water sample within the sampling container (2).

6. The water quality testing sampling system of claim 5, wherein the control device comprises:

a control module; and

the liquid level relay is in signal connection with the control module and the liquid level detection device and is configured to control the duration of the first pipeline (A) in at least one working state according to the liquid level of a water sample in the sampling container (2).

7. The water quality testing sampling system of claim 5, wherein the level detection device comprises at least one level switch disposed within the sampling vessel (2).

8. The water quality detection sampling system according to any one of claims 1 to 7, further comprising a second pipeline (B) configured to be connected between the water storage part and the sampling container (2), wherein the second pipeline (B) is communicated into the sampling container (2) and has a pipe orifice located at a preset liquid level height, and is configured to discharge water samples exceeding the preset liquid level height to the water storage part when the height of the liquid level of the water samples in the sampling container (2) exceeds the preset liquid level height.

9. The water quality testing sampling system according to claim 8, wherein the diameter of the second pipe (B) is larger than the diameter of the first pipe (a).

10. A water quality testing sampling system according to any one of claims 1 to 7, further comprising a water quality testing device (5) disposed within the sampling vessel (2), the water quality testing device (5) being configured to acquire water quality testing data of a water sample as the test sample.

11. A water quality testing sampling method of a water quality testing sampling system according to any one of claims 1 to 10, comprising:

-bringing said first circuit (a) in said flushing condition for a first preset time;

enabling the first pipeline (A) to be in the water taking state until the liquid level of the water sample in the sampling container (2) is stabilized at a preset liquid level; and

and enabling the first pipeline (A) to be in the blocking state, and acquiring the water quality detection data.

12. The water quality testing sampling method according to claim 11, further comprising: before the first pipeline (A) is in the flushing state or after the water quality detection data is acquired, the first pipeline (A) is in the draining state for a second preset time or until the water sample in the sampling container (2) is drained.

Background

According to the environmental protection requirement at the present stage, in a sewage treatment station in the tobacco industry, an inspector adopts a full-spectrum water quality detector to sample sewage and perform water quality detection. However, the current pumping system for sewage sampling has difficulty in meeting the working conditions of the full spectrum water quality detector. On one hand, a water taking and draining pipeline of the water pumping system is connected between the sewage tank and the operation chamber, the water taking and draining pipeline is long, and before sewage sampling each time, a water quality detection sample left in the pipeline after the last sewage sampling is difficult to drain, so that the detection result is influenced; on the other hand, when the full-spectrum water quality monitor is adopted to sample sewage, whether the sampling process is safe and stable or not is difficult to comprehensively judge through the sampling time and the liquid level in the sampling container.

Disclosure of Invention

A first aspect of the present disclosure provides a water quality detection sampling system for detecting water quality of a water storage portion, including:

a sampling container configured to store a water sample extracted from the water storage part as a detection sample;

a first pipeline configured to be connected between the water storage part and the sampling container, and having the following working states: a blocking state, a water intake state, a drain state, and a flush state, wherein in the blocking state, the first conduit is configured to block a flow of water samples between the water storage and the sampling vessel, in the water intake state, the first conduit is configured to flow water samples from the water storage to the sampling vessel, in the drain state, the first conduit is configured to flow water samples from the sampling vessel to the water storage, and in the flush state, the first conduit is configured to flow water samples from the water storage back to the water storage after passing through at least a portion of the first conduit;

at least one control valve disposed on the first pipeline configured to switch the operating state of the first pipeline; and

and the control device is in signal connection with the at least one control valve and is configured to control the action of the at least one control valve so as to control the working state of the first pipeline.

In accordance with some embodiments of the present disclosure,

the first pipeline comprises a first branch, a second branch and a third branch, one end of the first branch, one end of the second branch and one end of the third branch are communicated with each other, the other end of the first branch is used for being communicated with the water storage part, the other end of the second branch is used for being communicated with the water storage part, and the other end of the third branch is communicated with the sampling container;

the water quality detection sampling system further comprises a water pump, the water pump is arranged on the first branch and is in signal connection with the control device, and the control device is configured to control whether the water pump extracts a water sample from the water storage part;

in the blocking state, the at least one control valve controls the second branch and the third branch to be disconnected; in the water taking state, the at least one control valve controls the first branch and the third branch to be communicated so that the sampling container and the water storage part are communicated with the third branch through the first branch; in the drainage state, the at least one control valve controls the connection of the third branch and the second branch so as to enable the sampling container to be communicated with the water storage part through the third branch and the second branch; in the flushing state, the at least one control valve controls the first branch and the second branch to be connected and form a circulation loop with the water storage part, and controls the third branch to be disconnected.

According to some embodiments of the present disclosure, the at least one control valve includes a first control valve and a second control valve, the first control valve is disposed on the second branch to control the on/off of the second branch, and the second control valve is disposed on the third branch to control the on/off of the third branch.

According to some embodiments of the present disclosure, the water quality testing sampling system further comprises a manual valve disposed on the third branch and between the second control valve and the sampling vessel.

According to some embodiments of the present disclosure, the water quality detection sampling system further comprises a liquid level detection device in signal connection with the control device, the liquid level detection device being configured to detect a liquid level of the water sample within the sampling container.

According to some embodiments of the disclosure, the control device comprises:

a control module; and

and the liquid level relay is in signal connection with the control module and the liquid level detection device and is configured to control the duration of the first pipeline in at least one working state according to the liquid level of the water sample in the sampling container.

According to some embodiments of the present disclosure, the liquid level detection device comprises at least one liquid level switch disposed within the sampling container.

According to some embodiments of the present disclosure, the water quality detection sampling system further comprises a second pipeline, the second pipeline is configured to be connected between the water storage part and the sampling container, the second pipeline is introduced into the inside of the sampling container, the pipe orifice of the second pipeline is located at a preset liquid level height, and the second pipeline is configured to discharge the water sample exceeding the preset liquid level height to the water storage part when the liquid level of the water sample in the sampling container exceeds the preset liquid level height.

According to some embodiments of the disclosure, the diameter of the second tube is larger than the diameter of the first tube.

According to some embodiments of the present disclosure, the water quality detection sampling system further comprises a water quality detection device disposed in the sampling vessel, the water quality detection device being configured to acquire water quality detection data of a sewage sample as the detection sample.

A second aspect of the present disclosure provides a water quality testing and sampling method for a water quality testing and sampling system according to the first aspect of the present disclosure, including:

enabling the first pipeline to be in the flushing state and lasting for a first preset time;

enabling the first pipeline to be in the water taking state until the liquid level of the water sample in the sampling container is stabilized at a preset liquid level; and

and enabling the first pipeline to be in the blocking state, and acquiring the water quality detection data.

According to some embodiments of the present disclosure, the water quality inspection sampling method further comprises: before the first pipeline is in the flushing state or after the water quality detection data is acquired, the first pipeline is in the drainage state, and the second preset time is continued or until the water sample in the sampling container is emptied.

Based on this water quality testing sampling system that this disclosed embodiment provided, before water quality testing samples at every turn, can switch the operating condition of first pipeline to the state of washing through at least one control valve, treat that the water sample of sampling flows back to the water storage portion after at least partly of water storage portion through first pipeline, can wash at least partly of first pipeline, does benefit to and reduces the influence of the water sample of leaving over in the first pipeline after the last water sample sampling this time water quality testing result.

Other features of the present disclosure and advantages thereof will become apparent from the following detailed description of exemplary embodiments thereof, which proceeds with reference to the accompanying drawings.

Drawings

The accompanying drawings, which are included to provide a further understanding of the disclosure and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the disclosure and together with the description serve to explain the disclosure and not to limit the disclosure. In the drawings:

fig. 1 is a schematic structural diagram of a water quality detection sampling system according to some embodiments of the present disclosure.

Fig. 2 is a schematic diagram of the internal structure of a sampling vessel according to some embodiments of the present disclosure.

Fig. 3 is a top view of the internal structure of the sampling vessel shown in fig. 2.

Fig. 4 is a schematic diagram of electrical connections of a water quality detection sampling system according to some embodiments of the present disclosure.

In fig. 1 to 4, each reference numeral represents:

1. a sewage tank; 2. a sampling container; 31. a first control valve; 32. a second control valve; 33. a manual valve; 41. a first liquid level switch; 42. a second liquid level switch; 43. a third liquid level switch; 5. a water quality detection device; 6. a water pump; 7. a power source; A. a first pipeline; a1, a first branch; a2, a second branch; a3, third branch; B. a second pipeline.

Detailed Description

The technical solutions in the embodiments of the present disclosure will be clearly and completely described below with reference to the drawings in the embodiments of the present disclosure, and it is obvious that the described embodiments are only a part of the embodiments of the present disclosure, and not all of the embodiments. The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the disclosure, its application, or uses. All other embodiments, which can be derived by a person skilled in the art from the embodiments disclosed herein without making any creative effort, shall fall within the protection scope of the present disclosure.

The relative arrangement of the components and steps, the numerical expressions, and numerical values set forth in these embodiments do not limit the scope of the present disclosure unless specifically stated otherwise. Meanwhile, it should be understood that the sizes of the respective portions shown in the drawings are not drawn in an actual proportional relationship for the convenience of description. Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail, but are intended to be part of the specification where appropriate. In all examples shown and discussed herein, any particular value should be construed as merely illustrative, and not limiting. Thus, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, further discussion thereof is not required in subsequent figures.

In the description of the present disclosure, it should be understood that the terms "first", "second", etc. are used to define the components, and are used only for convenience of distinguishing the corresponding components, and if not otherwise stated, the terms have no special meaning, and thus, should not be construed as limiting the scope of the present disclosure.

In the description of the present disclosure, it is to be understood that the orientation or positional relationship indicated by the directional terms such as "front, rear, upper, lower, left, right", "lateral, vertical, horizontal" and "top, bottom", etc., are generally based on the orientation or positional relationship shown in the drawings, and are presented only for the convenience of describing and simplifying the disclosure, and in the absence of a contrary indication, these directional terms are not intended to indicate and imply that the device or element being referred to must have a particular orientation or be constructed and operated in a particular orientation, and therefore, should not be taken as limiting the scope of the disclosure; the terms "inner and outer" refer to the inner and outer relative to the profile of the respective component itself.

As shown in fig. 1 to 4, some embodiments of the present disclosure provide a water quality sampling system for detecting water quality of a water storage part. The water storage part may be a water storage container or a water storage building, or may be a natural water body such as a river or a lake, for example, as shown in fig. 1, the water storage part is a sewage tank 1. The water quality detection sampling system comprises a sampling container 2, a first pipeline A, at least one control valve and a control device.

The sampling vessel 2 is configured to store a water sample extracted from the water storage portion as a detection sample.

The first line a is arranged to be connected between the water reservoir and the sampling container 2, with the following operating conditions: a blocking state, a water intake state, a water discharge state, and a flushing state. Wherein, in the blocking state, the first pipeline a is configured to block the flow of the water sample between the water storage part and the sampling container 2; in the water intake state, the first pipe a is configured to flow the water sample from the water storage to the sampling container 2; in the drainage state, the first pipe a is configured to flow the sampled water from the sampling vessel 2 to the water storage portion; in the flushing state, the first pipe a is configured to allow sampled water to flow from the water storage portion back to the water storage portion through at least a portion of the first pipe a.

At least one control valve is disposed on the first line a and configured to switch an operating state of the first line a.

The control device is in signal connection with the at least one control valve and is configured to control the action of the at least one control valve to control in which operating state the first line a is.

Based on this water quality testing sampling system that this disclosed embodiment provided, before water quality testing samples at every turn, can switch the operating condition of first pipeline to the state of washing through at least one control valve, treat that the water sample of sampling flows back to the water storage portion after at least partly of water storage portion through first pipeline, can wash at least partly of first pipeline, does benefit to and reduces the influence of the water sample of leaving over in the first pipeline after the last water sample sampling this time water quality testing result.

As shown in fig. 1, in some embodiments, the first circuit a includes a first branch a1, a second branch a2, and a third branch A3. One ends of the first branch A1, the second branch A2 and the third branch A3 are communicated with each other, the other end of the first branch A1 is communicated with the water storage part, the other end of the second branch A2 is communicated with the water storage part, and the other end of the third branch A3 is communicated with the sampling container 2. The water quality detection sampling system also comprises a water pump 6. The water pump 6 is disposed on the first branch a1 and is in signal connection with a control device, and the control device is configured to control whether the water pump 6 draws water sample from the water storage portion. In the blocking state, the at least one control valve controls the second branch a2 and the third branch A3 to be disconnected; in the water intaking state, the at least one control valve controls the first branch A1 to be communicated with the third branch A3 so that the sampling container 2 and the water storage part are communicated with the third branch A3 through the first branch A1; in the drainage state, at least one control valve controls the connection of the third branch A3 and the second branch A2 so as to enable the sampling container 2 to be communicated with the water storage part through the third branch A3 and the second branch A2; in the flushing state, at least one control valve controls the connection of the first branch A1 and the second branch A2 and forms a circulation loop with the water storage part, and controls the disconnection of the third branch A3.

As shown in fig. 1, in some embodiments, the at least one control valve includes a first control valve 31 and a second control valve 32, the first control valve 31 is disposed on the second branch a2 to control the opening and closing of the second branch a2, and the second control valve 32 is disposed on the third branch A3 to control the opening and closing of the third branch A3.

According to the arrangement, when the first control valve 31 and the second control valve 32 control the second branch A2 and the third branch A3 to be disconnected respectively, the first pipeline A is in a blocking state; when the first control valve 31 controls the second branch A2 to be connected and the second control valve 32 controls the third branch A3 to be disconnected, the first pipeline A is in a flushing state, and water quality detection samples left in the first branch A1 and the second branch A2 after the last sampling can be cleared through flushing; when the first control valve 31 controls the second branch A2 to be disconnected, the second control valve 32 controls the third branch A3 to be connected, the first pipeline A is in a water taking state, and when the first control valve 31 and the second control valve 32 respectively control the second branch A2 and the third branch A3 to be connected, the first pipeline A is in a water discharging state.

As shown in fig. 1, in some embodiments, the water quality testing sampling system further comprises a manual valve 33 disposed on the third branch a3 and between the second control valve 32 and the sampling vessel 2. The manual valve 33 may be disposed at a portion of the third branch A3 located at the operation chamber, and in the water intake state, if the second control valve 32 cannot be closed due to a malfunction, the inspector may cut off the third branch A3 by manipulating the manual valve 33 in time to prevent the liquid level in the sampling container 2 from being excessively high.

In some embodiments, the water quality detection sampling system further comprises a liquid level detection device in signal connection with the control device, the liquid level detection device being configured to detect the liquid level of the water sample within the sampling vessel 2.

As shown in fig. 4, in some embodiments, the control device includes a control module and a level relay. The liquid level relay is in signal connection with the control module and the liquid level detection device and is configured to control the duration of the first pipeline A in at least one working state according to the liquid level of the water sample in the sampling container 2.

According to the setting, the duration of the water quality detection sampling system under each working state can be preset through the control program of the control module, and when water sample sampling is carried out, the liquid level detection data detected by the liquid level detection device can be combined, the duration of a certain working state can be flexibly adjusted through the liquid level relay, so that the water sample sampling process is safer and more stable, and automatic sampling detection is better realized.

In some embodiments, the liquid level detection device comprises at least one liquid level switch disposed within the sampling vessel 2.

As shown in fig. 2, a first level switch 41, a second level switch 42, and a third level switch 43 may be provided in this order from the bottom to the top along the vertical direction of the sampling vessel 2. Wherein, first liquid level switch 41 sets up in the bottom of sample container 2, and second liquid level switch 42 and third liquid level switch 43 set up in the top of sample container 2, and the mounting height of third liquid level switch 43 equals or is a little higher than second liquid level switch 42, if second liquid level switch 42 breaks down, third liquid level switch 43 can regard as second liquid level switch 42 for subsequent use.

As shown in fig. 2 and 3, in some embodiments, the water quality detection sampling system further includes a second pipe B connected between the water storage portion and the sampling container 2, the second pipe B opens into the sampling container 2, and the nozzle is located at a preset liquid level. The preset level height may be slightly higher than the maximum level height. The second pipe B is configured to discharge the water sample exceeding the preset liquid level height to the water storage part when the height of the liquid level of the water sample in the sampling container 2 exceeds the preset liquid level height. For example, if the second control valve 32 cannot be closed due to a fault, and the height of the liquid level of the water sample in the sampling container 2 exceeds the preset liquid level height, the second pipeline B may discharge the water sample exceeding the preset liquid level height to the water storage part, so as to prevent the water sample in the sampling container 2 from overflowing.

In some embodiments, the diameter of the second tube B is larger than the diameter of the first tube a to expel sampled water above a preset level as quickly as possible.

As shown in fig. 2 and 3, in some embodiments, the water quality testing sampling system further comprises a water quality testing device 5 disposed within the sampling vessel 2. The water quality detection device 5 is configured to acquire water quality detection data of a water sample as a detection sample.

Some embodiments of the present disclosure further provide a water quality detection sampling method of the foregoing water quality detection sampling system, including: step 1, enabling a first pipeline A to be in a flushing state and lasting for a first preset time; step 2, enabling the first pipeline A to be in a water taking state until the liquid level of the water sample in the sampling container 2 is stabilized at a preset liquid level; and 3, enabling the first pipeline A to be in a blocking state, and acquiring water quality detection data. The water quality detection sampling method has the advantages of the water quality detection sampling system.

Before each sampling, the sample container 2 and the first pipeline a may still have the detection sample left in the last sampling. In some embodiments, prior to step 1, the first line a is put in a draining state for a second preset time or until the sample container 2 is emptied of the sample water before putting the first line a in a flushing state.

After each acquisition of the water quality detection data, in order to reduce the interference of the detection sample with the next sampling, in some embodiments, after step 3, after the acquisition of the water quality detection data, the first pipeline a is put in a draining state for a second preset time or until the water sample in the sampling vessel 2 is drained.

The water quality detection sampling method according to some embodiments of the present disclosure is further described below with reference to fig. 1 to 4.

When the water quality detection sampling system stops working, the first control valve 31 cuts off the second branch A2, the second control valve 32 cuts off the third branch A3, the water pump 6 is closed, and the first pipeline A is in a blocking state.

Before sampling for water quality detection, the first control valve 31 is communicated with the second branch A2, the second control valve 32 is communicated with the third branch A3, the first pipeline A is in a drainage state and lasts for 1 minute, and therefore the sampled water in the sampling container 2 and the sampled water in the first pipeline A are drained.

The second control valve 32 is made to cut off the third branch A3 and the water pump 6 is turned on, the first branch a is in a flushing state for 2 minutes to flush the first branch a1 and the second branch a2 thoroughly with the sample water to be sampled.

The second control valve 32 is turned on to the third branch A3, the first control valve 31 is turned off to the second branch a2, and the first line a is in the water intake state to draw the sampled water into the sampling vessel 2. Until after lasting a period of time, when the liquid level height in the sampling container 2 reached the mounting height of second liquid level switch 42, or when second liquid level switch 42 failed to work normally and the liquid level height in the sampling container 2 reached the mounting height of third liquid level switch 43, the liquid level relay made second control valve 32 cut off third branch A3 according to the liquid level signal that second liquid level switch 42 or third liquid level switch 43 detected this moment, and close water pump 6, first pipeline A was in the block state, the liquid level of the water sample in messenger sampling container 2 was stabilized in predetermineeing the liquid level.

And after 5 minutes, acquiring water quality detection data of the water sample by using the water quality detection device 5, and collecting and processing the water quality detection data by using the control module.

After the control module collects the water quality detection data, the first control valve 31 is connected with the second branch A2, the second control valve 32 is connected with the third branch A3, and the first pipeline A is in a drainage state until a water sample in the sampling container 2 is emptied.

In some embodiments, the control modules described above may be implemented as a general purpose Processor, a Programmable Logic Controller (PLC), a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), a Field Programmable Gate Array (FPGA) or other Programmable Logic device, discrete Gate or transistor Logic, discrete hardware components, or any suitable combination thereof for performing the functions described in this disclosure.

Finally, it should be noted that: the above examples are intended only to illustrate the technical solutions of the present disclosure and not to limit them; although the present disclosure has been described in detail with reference to preferred embodiments, those of ordinary skill in the art will understand that: modifications to the embodiments of the disclosure or equivalent replacements of parts of the technical features may be made, which are all covered by the technical solution claimed by the disclosure.