An extraction line sampling device

Abstract

The utility model relates to extraction line sampling technical field discloses an extraction line sampling device, including sampling subassembly and flushing subassembly, sampling subassembly includes sampling pipe, sampling pump and first valve, sampling pump connects sampling pipe, is used for drive the fluid in sampling pipe and flows from liquid inlet end to liquid outlet end, and the first valve sets up in sampling pipe, flushing subassembly includes water storage tank, flushing pipe and second valve, one end of flushing pipe is linked together with water storage tank, other end is linked together with sampling pipe, and the intercommunication of flushing pipe and sampling pipe is located between first valve and sampling pump, and the second valve sets up in flushing pipe. The extraction line sampling device in the utility model sets up single sampling pump, can realize sampling and the flushing of sampling pipe.

Description

Technical Field

[0001] This utility model relates to the field of extraction line sampling technology, and specifically to an extraction line sampling device. Background Technology

[0002] In the nickel extraction process, when the nickel concentration in the ammonia wastewater generated in the soap-making stage is below 100 mg / L, more reagents (such as sodium sulfide and sodium carbonate) need to be consumed or the reaction time needs to be extended, leading to increased costs. When the nickel content is too high, it indicates that the nickel has not been fully extracted. Therefore, the nickel content in the ammonia wastewater generated in the soap-making stage needs to be strictly controlled between 100 and 300 mg / L. By judging the nickel content in the ammonia wastewater, feedback can be given to the extraction process, thereby adjusting the amount of nickel extracted.

[0003] To determine the nickel content in ammonia wastewater, sampling analysis can be performed to detect the nickel concentration in the sample. Publication number CN222364800U discloses a raw water sampling system for a wastewater treatment plant, including a raw water pipeline, a sampling tube connecting the raw water pipeline and a laboratory, and a flushing tube. A first control valve and a sampling pump are sequentially installed along the water flow direction on the sampling tube. One end of the flushing tube is connected to the raw water pipeline, and a second control valve, a flushing pump, and a third control valve are sequentially installed along the water flow direction on the flushing tube. The other end of the flushing tube is connected to the outlet of the sampling pump. A fourth control valve is installed on the sampling tube between the sampling pump and the laboratory. To prevent samples from remaining inside the sampling tube, a flushing tube, a second control valve, a flushing pump, and a third control valve are provided, and the flushing pump flushes the sampling tube.

[0004] The above-mentioned sampling system includes a sampling pump for sampling and a flushing pump for rinsing. Both the sampling pump and the flushing pump have pumping functions. Setting up two pumps results in structural redundancy, making it impossible to achieve sampling and rinsing using a single pump. Utility Model Content

[0005] The purpose of this invention is to overcome the above-mentioned technical deficiencies and propose an extraction line sampling device to solve the technical problem that sampling and rinsing cannot be achieved using a single pump in the prior art.

[0006] To achieve the above-mentioned technical objectives, the present invention adopts the following technical solution:

[0007] In a first aspect, this utility model provides an extraction line sampling device, comprising:

[0008] A sampling assembly includes a sampling tube, a sampling pump, and a first valve. The sampling pump is connected to the sampling tube and is used to drive the fluid in the sampling tube to flow from the inlet end to the outlet end. The first valve is disposed on the sampling tube.

[0009] The flushing assembly includes a water storage tank, a flushing pipe, and a second valve. One end of the flushing pipe is connected to the water storage tank, and the other end is connected to the sampling pipe. The connection between the flushing pipe and the sampling pipe is located between the first valve and the sampling pump. The second valve is located on the flushing pipe.

[0010] In one embodiment, the sampling tube includes a tee, a first tube body, and a second tube body. The tee has a first interface, a second interface, and a third interface that are connected to each other. The liquid outlet of the first tube body is connected to the first interface, and the liquid inlet of the second tube body is connected to the second interface.

[0011] The outlet end of the flushing tube is connected to the third interface.

[0012] In one embodiment, the first valve is disposed on the first pipe body;

[0013] The sampling pump is connected to the second pipe.

[0014] In one embodiment, the outlet end of the flushing tube is at least partially located above the first tube body.

[0015] In one embodiment, the sampling assembly further includes a third valve disposed in the second tube.

[0016] In one embodiment, the first tube is arranged vertically.

[0017] In one embodiment, the top of the water storage tank is provided with a water outlet, and the flushing pipe extends into the water storage tank through the water outlet.

[0018] In one embodiment, the flushing pipe is at least partially spiral-shaped, and the height of the spiral portion of the flushing pipe is lower than that of the outlet, and the fluid within it can spontaneously flow to the tee.

[0019] In one embodiment, the sampling assembly further includes a filter element disposed in the first tube.

[0020] In one embodiment, the sampling pump is a peristaltic pump.

[0021] Compared with the prior art, the extraction line sampling device provided by this utility model, when sampling is required, closes the second valve, opens the first valve, starts the sampling pump, the sampling pump draws the sample into the sampling tube, and transports the sample to the set location through the sampling tube. After sampling is completed, the second valve is opened and the first valve is closed. At this time, the sampling pump continues to draw, and the rinsing liquid in the water tank enters the rinsing tube, enters the sampling tube through the rinsing tube, and flows out from the sampling tube, thus cleaning the sampling tube. When sampling and rinsing, only a single sampling pump needs to be set up, and the corresponding valves need to be controlled to open and close during sampling and rinsing. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the extraction line sampling device provided in one embodiment of the present invention during use;

[0023] Figure 2 This is a schematic diagram of the structure of an extraction line sampling device provided in an embodiment of the present invention;

[0024] Figure 3 This is a partial structural schematic diagram of an extraction line sampling device provided in an embodiment of the present invention.

[0025] Explanation of reference numerals in the attached figures:

[0026] Sampling assembly 1; Sampling tube 11; Tee 111; First tube body 112; Second tube body 113; Sampling pump 12; First valve 13; Third valve 14; Filter element 15;

[0027] Flushing assembly 2; water tank 21; flushing pipe 22; second valve 23;

[0028] Extraction tank 3. Detailed Implementation

[0029] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0030] To address the technical problem of not being able to achieve sampling and rinsing using a single pump, this invention provides an extraction line sampling device that can achieve sampling and rinsing using a single pump.

[0031] It should be noted that the extraction line sampling device described in this utility model is used for, but not limited to, sampling of ammonia wastewater in the extraction line. For ease of explanation, this utility model only uses the application of the extraction line sampling device to ammonia wastewater sampling in the extraction line as an example. The principle of the extraction line sampling device applied to other types of equipment is essentially the same as that applied to ammonia wastewater sampling in the extraction line, and will not be described in detail here.

[0032] Please see Figure 1 and Figure 2 , Figure 1 This is a schematic diagram of the extraction line sampling device in use according to one embodiment of the present invention. Figure 2 This is a schematic diagram of the extraction line sampling device in one embodiment of the present invention. The extraction line sampling device includes a sampling component 1 and a rinsing component 2. The sampling component 1 includes a sampling tube 11, a sampling pump 12 and a first valve 13. The sampling pump 12 is connected to the sampling tube 11 and is used to drive the fluid in the sampling tube 11 to flow from the inlet end to the outlet end. The first valve 13 is disposed on the sampling tube 11. The rinsing component 2 includes a water storage tank 21, a rinsing pipe 22 and a second valve 23. One end of the rinsing pipe 22 is connected to the water storage tank 21 and the other end is connected to the sampling tube 11. The connection between the rinsing pipe 22 and the sampling tube 11 is located between the first valve 13 and the sampling pump 12. The second valve 23 is disposed on the rinsing pipe 22.

[0033] Specifically, when sampling is required, the sampling tube 11 is inserted into the extraction tank 3, the second valve 23 is closed, the first valve 13 is opened, and the sampling pump 12 is started. The sampling pump 12 draws the sample into the sampling tube 11 and transports the sample to the designated location through the sampling tube 11. After sampling is completed, the second valve 23 is opened and the first valve 13 is closed. At this time, the sampling pump 12 continues to draw the sample, and the rinsing liquid in the water tank 21 enters the rinsing pipe 22 and enters the sampling tube 11 through the rinsing pipe 22, and flows out of the sampling tube 11, thus cleaning the sampling tube 11. When sampling and rinsing, only a single sampling pump 12 needs to be set up, and the corresponding valves need to be opened and closed during sampling and rinsing.

[0034] It should be understood that the rinsing solution can be water or dilute sulfuric acid.

[0035] It should be understood that the sampling tube 11 can be a single, continuous pipe or formed by splicing together multiple pipes. Specifically, for example... Figure 3 As shown, in one embodiment, the sampling tube 11 includes a tee 111, a first tube body 112 and a second tube body 113. The tee 111 has a first interface, a second interface and a third interface that are connected. The liquid outlet end of the first tube body 112 is connected to the first interface, and the liquid inlet end of the second tube body 113 is connected to the second interface. The liquid outlet end of the flushing tube 22 is connected to the third interface.

[0036] In this embodiment, the sampling tube 11 is configured as a three-way valve 111, a first tube body 112, and a second tube body 113. The connection between the sampling tube 11 and the flushing tube 22 is achieved through the three-way valve 111.

[0037] In order to switch between sampling and flushing via the first valve 13 and the second valve 23, for this purpose, as follows: Figure 2 and Figure 3 As shown, in one embodiment, a first valve 13 is disposed on a first pipe body 112; a sampling pump 12 is connected to a second pipe body 113.

[0038] In this embodiment, by placing the first valve 13 on the first tube 112, during sampling, the first valve 13 is opened, and the sample passes sequentially through the first tube 112, the tee 111, and the second tube 113 under the action of the sampling pump 12. During rinsing, the first valve 13 is closed, and the second valve 23 is opened, allowing the fluid in the water tank 21 to flow sequentially through the rinsing pipe 22, the tee 111, and the second tube 113. Placing the first valve 13 on the first tube 112 instead of the second tube 113 allows the first valve 13 to control the sampling and rinsing of the sampling tube 11. The sampling tube 11 is vertically inserted into the extraction tank 3.

[0039] The above setup only flushes the second pipe body 113. To flush the first pipe, therefore, as follows... Figure 2 and Figure 3 As shown, in one embodiment, the outlet end of the flushing tube 22 is at least partially located above the first tube body 112.

[0040] After the second tube 113 is flushed, the sampling pump 12 is turned off and the first valve 13 is opened. At this time, the remaining flushing liquid in the outlet of the flushing pipe 22 can flow into the first tube 112 under the action of gravity and flow out of the first tube 112. During the process of the flushing liquid flowing through the first tube 112, the first tube 112 is flushed.

[0041] During flushing of the first tube 112, to prevent the flushing fluid from flowing out through the second tube 113, therefore, as follows: Figure 2 and Figure 3 As shown, in one embodiment, the sampling assembly 1 further includes a third valve 14 disposed in the second tube 113.

[0042] By setting a third valve 14, the third valve 14 is closed when flushing the first pipe body 112, which can prevent the flushing fluid from flowing out through the second pipe body 113; after flushing the first pipe body 112 is completed, the third valve 14 is opened.

[0043] To prevent flushing fluid from remaining in the first tube 112, therefore, as follows Figure 2 and Figure 3 As shown, in one embodiment, the first tube 112 is arranged vertically.

[0044] By setting the first tube 112 vertically, the presence of a U-shaped structure in the first tube 112 is avoided, thus preventing the flushing fluid from remaining in the first tube 112 due to the U-shaped structure.

[0045] It should be understood that the flushing pipe 22 can be connected to the bottom of the water storage tank 21 or to the side wall of the water storage tank 21, specifically, as shown below. Figure 2 As shown, in one embodiment, the top of the water storage tank 21 is provided with a water outlet, and the flushing pipe 22 extends into the water storage tank 21 through the water outlet.

[0046] By extending the flushing pipe 22 into the water storage tank 21 through the water outlet, the flushing pipe 22 and the water storage tank 21 are connected.

[0047] Because the sampling pump 12 cannot continuously draw flushing fluid from the water storage tank 21 to clean the first tube 112 after it is turned off, the amount of flushing fluid in the flushing pipe 22 that can flush the first tube 112 is too small. Therefore, if Figure 3 As shown, in one embodiment, the flushing pipe 22 is at least partially spiral-shaped, and the height of the spiral portion of the flushing pipe 22 is lower than that of the outlet, and the fluid therein can spontaneously flow to the tee 111.

[0048] In this embodiment, by setting a portion of the flushing tube 22 in a spiral shape, the spiral shape can extend the length of the portion of the flushing tube 22 located above the first tube body 112, thereby increasing the amount of flushing liquid in the flushing tube 22. When the sampling pump 12 is turned off, the flushing liquid remaining in the spiral portion of the flushing tube 22 is sufficient to flush the first tube body 112. Secondly, when the flushing liquid flows through the spiral portion of the flushing tube 22, it can drive the flushing liquid to flow in a spiral shape, so that the flushing liquid entering the first tube body 112 and the second tube body 113 flows in a spiral shape, thereby enhancing the flushing effect of the flushing liquid on the first tube body 112 and the second tube body 113.

[0049] To filter the sample entering sampling tube 11 and prevent any crystals that may be present in the sample from passing through sampling tube 11, such as... Figure 2 and Figure 3 As shown, in one embodiment, the sampling assembly 1 further includes a filter 15 disposed in the first tube 112.

[0050] By setting the filter element 15, the sample entering the first tube 112 can be filtered to prevent impurities from entering the second tube 113.

[0051] It should be understood that the filter element 15 can be a filter screen with the liquid inlet end of the first tube 112, or it can be a filter screen and filter cotton built into the first tube 112.

[0052] It should be understood that the sampling pump 12 can be an axial flow pump, centrifugal pump, etc., which are directly connected to the second pipe body 113. Specifically, in one embodiment, the sampling pump 12 is a peristaltic pump.

[0053] In this embodiment, by setting the sampling pump 12 as a peristaltic pump, the peristaltic pump clamps the second tube 113 and drives the sample in the second tube 113 to flow. During the sampling process, the sample will not come into contact with the peristaltic pump, which can avoid the sample from being contaminated by contact with the peristaltic pump. At the same time, it can also avoid the peristaltic pump being corroded by the sample.

[0054] It should be understood that in order for the peristaltic pump to drive the sample in the second tube 113 to move, the material of the second tube 113 is set to a flexible material, such as silicone, rubber and latex.

[0055] It should be understood that the sample taken out from the second tube 113 can be put into a sample container, or an online monitoring device can be set at the liquid outlet of the second tube 113 to detect the nickel content in the ammonia wastewater. The online monitoring device can be a colorimeter, a conductivity meter, etc.

[0056] In order to reduce crystallization of the sample on the inner walls of the first tube 112 and the second tube 113, in one embodiment, the inner walls of the first tube 112 and the second tube 113 are provided with a polytetrafluoroethylene coating (not shown in the figure).

[0057] Polytetrafluoroethylene (PTFE) has extremely low surface energy and a nonpolar molecular structure, resulting in a large contact angle and poor wettability of liquids on its surface. This characteristic makes it difficult for samples to form a uniform wetting layer on the coating surface, thereby reducing the chance of crystal nucleation and adhesion, and reducing sample crystallization on the tube wall.

[0058] It should be understood that the first valve 13, the second valve 23, and the third valve 14 can be manual valves or solenoid valves. The solenoid valves are connected to the PLC controller, and the opening and closing of the solenoid valves are controlled by the PLC controller.

[0059] The specific embodiments of this utility model described above do not constitute a limitation on the scope of protection of this utility model. Any other corresponding changes and modifications made based on the technical concept of this utility model should be included within the scope of protection of the claims of this utility model.

Claims

1. An extraction line sampling device, characterized in that, include: A sampling assembly includes a sampling tube, a sampling pump, and a first valve. The sampling pump is connected to the sampling tube and is used to drive the fluid in the sampling tube to flow from the inlet end to the outlet end. The first valve is disposed on the sampling tube. The flushing assembly includes a water storage tank, a flushing pipe, and a second valve. One end of the flushing pipe is connected to the water storage tank, and the other end is connected to the sampling pipe. The connection between the flushing pipe and the sampling pipe is located between the first valve and the sampling pump. The second valve is located on the flushing pipe.

2. The extraction line sampling device according to claim 1, characterized in that, The sampling tube includes a three-way connector, a first tube body, and a second tube body. The three-way connector has a first interface, a second interface, and a third interface that are connected to each other. The liquid outlet end of the first tube body is connected to the first interface, and the liquid inlet end of the second tube body is connected to the second interface. The outlet end of the flushing tube is connected to the third interface.

3. The extraction line sampling device according to claim 2, characterized in that, The first valve is disposed in the first pipe body; The sampling pump is connected to the second pipe.

4. The extraction line sampling device according to claim 3, characterized in that, The outlet end of the flushing tube is at least partially located above the first tube body.

5. The extraction line sampling device according to claim 4, characterized in that, The sampling assembly also includes a third valve, which is disposed in the second tube.

6. The extraction line sampling device according to claim 4, characterized in that, The first tube is set vertically.

7. The extraction line sampling device according to claim 4, characterized in that, The water tank is provided with an outlet at the top, and the flushing pipe extends into the water tank through the outlet.

8. The extraction line sampling device according to claim 7, characterized in that, The flushing pipe is at least partially spiral-shaped, and the height of the spiral portion of the flushing pipe is lower than that of the outlet, and the fluid within it can spontaneously flow to the tee.

9. The extraction line sampling device according to claim 2, characterized in that, The sampling assembly also includes a filter element disposed in the first tube.

10. The extraction line sampling device according to claim 1, characterized in that, The sampling pump is a peristaltic pump.

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