Closed sampling device

Abstract

The utility model belongs to the technical field of electrolyte production, and particularly relates to a closed sampling device which comprises a circulating main pipeline, a sampling branch pipe connected to the circulating main pipeline in parallel and a sampling container detachably connected to the sampling branch pipe, and a first electromagnetic valve and a second electromagnetic valve are respectively connected to two sides of the sampling container on the sampling branch pipe in series. The sampling branch pipe comprises a liquid inlet and a liquid outlet, and is communicated with the circulating main pipeline through the liquid inlet and the liquid outlet; a magnetic pump is connected in series between the liquid inlet and the liquid outlet on the circulating main pipeline; the first electromagnetic valve, the second electromagnetic valve and the magnetic pump are all connected with the control system; a sampling opening is formed in the sampling container, and a silica gel sealing piece is connected to the sampling opening in a sealed mode. According to the utility model, closed sampling is realized, materials are prevented from being contacted with air, and the detection accuracy and stability are improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of electrolyte production, in particular to a closed sampling device. Background Art

[0002] During the production process, electrolyte samples must be sampled and tested to ensure product quality. Conventional sampling methods involve connecting a sampling branch to the main pipeline, with one end of the branch suspended in the air and the other connected to the main pipeline. A solenoid valve is connected in series to the branch. When sampling is required, the solenoid valve is opened, and a sampling cup is placed below the suspended end of the branch, allowing the liquid to flow into the cup. Once sampling is complete, the solenoid valve is closed. This sampling method is not airtight, exposing the sample to air, which affects test results and leads to inconsistent sample quality after multiple sampling attempts. Furthermore, the sampling process requires on-site operator control, wasting manpower. Utility Model Content

[0003] In order to solve the problems in the above-mentioned background technology, the utility model provides a closed sampling device to achieve closed sampling, and the sampling container can be removed from the sampling branch pipe and transferred to a specific position for sampling, thereby improving the accuracy and stability of detection.

[0004] The utility model adopts the following technical solutions:

[0005] A closed sampling device comprises a circulation main pipe, a sampling branch pipe connected in parallel to the circulation main pipe, and a sampling container detachably connected to the sampling branch pipe, wherein:

[0006] The sampling branch pipe is located on both sides of the sampling container and is connected in series with a first solenoid valve and a second solenoid valve respectively. The sampling branch pipe includes a liquid inlet and a liquid outlet, and the sampling branch pipe is connected to the circulation main pipe through the liquid inlet and the liquid outlet;

[0007] A magnetic pump is connected in series between the liquid inlet and the liquid outlet on the circulation main pipeline;

[0008] The first solenoid valve, the second solenoid valve and the magnetic pump are all connected to the control system;

[0009] A sampling port is provided on the sampling container, and a silicone sealing member is sealed at the sampling port.

[0010] Furthermore, a first connecting tube and a second connecting tube are fixed on the sampling container, and the first connecting tube and the second connecting tube are respectively sealed with a quick connector male end. The sampling branch tube includes a first sampling branch tube and a second sampling branch tube. One end of the first sampling branch tube and one end of the second sampling branch tube are both sealed with a quick connector female end, and the quick connector male end and the quick connector female end are plugged into connection.

[0011] Furthermore, the first connecting tube and the second connecting tube are respectively located at the top and bottom ends of the sampling container, and the sampling port is located in the middle position between the first connecting tube and the second connecting tube.

[0012] Furthermore, a connector is protruding from the sampling container, the sampling port is arranged on the connector, the silicone seal is a sealing gasket, and the sealing gasket is sealed and connected to the sampling port through a nut.

[0013] Furthermore, the silicone seal is a sealing plug, which is sealed into the sampling port.

[0014] Furthermore, the control system is a DCS control system, and the DCS control system controls the first solenoid valve and the second solenoid valve to open or close synchronously.

[0015] Furthermore, the sampling branch pipe is a metal hose.

[0016] Furthermore, the inner diameter of the sampling branch pipe is smaller than the inner diameter of the circulation main pipe.

[0017] Furthermore, the shape of the sampling container is any one of circular, elliptical or polygonal.

[0018] Furthermore, the circulation main pipeline, the sampling branch pipe, the sampling container, the first solenoid valve, the second solenoid valve, and the magnetic pump are all made of stainless steel.

[0019] Compared with the prior art, the beneficial effects of the present invention are:

[0020] (1) The closed sampling device of the present invention includes a circulation main pipe, a sampling branch pipe connected in parallel with the circulation main pipe, and a sampling container detachably connected to the sampling branch pipe. The sampling branch pipe is connected in series with a first solenoid valve and a second solenoid valve, and the circulation main pipe is connected in series with an electromagnetic pump. When sampling is required, the electromagnetic pump is turned on by the control system. After the electromagnetic pump is turned on for a certain period of time, the first solenoid valve and the second solenoid valve are opened, and the liquid material enters the sampling branch pipe through the liquid inlet. After the liquid material circulates in the sampling branch pipe for a certain period of time, the first solenoid valve and the second solenoid valve are closed. Thereafter, the sampling container is removed and transferred to a specific environment, and a syringe is used to pierce the silicone seal for sampling and detection. The present application realizes closed sampling, avoids contact between the material and the air, and improves the accuracy and stability of detection.

[0021] (2) The sampling branch pipe of the closed sampling device of the utility model is connected to the sampling container through the quick connector male end and the quick connector female end. The material will not leak during the plugging and unplugging process, which is convenient and quick. The sampling process is fully closed to avoid contact between the material and the air. After the sampling container is removed and transferred to a specific environment, a syringe is used to take samples for testing.

[0022] (3) The DCS control system of the closed sampling device of the present invention realizes the interlocking of the first solenoid valve and the second solenoid valve with the magnetic pump, and the sampling process does not require manual operation, saving manpower. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0024] Figure 1 This is a schematic structural diagram of the closed sampling device of the utility model;

[0025] Figure 2 This is a schematic diagram of the sampling container structure of the closed sampling device of the utility model;

[0026] Among them: 1-circulation main pipeline, 2-sampling branch pipe, 21-quick connector female end, 22-liquid inlet, 23-liquid outlet, 3-sampling container, 31-sampling port, 32-first connecting pipe, 33-second connecting pipe, 34-quick connector male end, 35-connector, 36-nut, 4-first solenoid valve, 5-second solenoid valve, 6-magnetic pump. DETAILED DESCRIPTION

[0027] The following is a clear and complete description of the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0028] The following is combined with Figure 1 To the attached Figure 2 And specific embodiments discuss the present invention in detail.

[0029] like Figure 1-2As shown, the utility model provides a closed sampling device, comprising a circulation main pipeline 1, a sampling branch pipe 2 connected in parallel to the circulation main pipeline 1, and a sampling container 3 detachably connected to the sampling branch pipe 2, wherein: a first solenoid valve 4 and a second solenoid valve 5 are respectively connected in series on both sides of the sampling container 3 on the sampling branch pipe 2, the sampling branch pipe 2 comprises a liquid inlet 22 and a liquid outlet 23, and the sampling branch pipe 2 is connected to the circulation main pipeline 1 through the liquid inlet 22 and the liquid outlet 23; a magnetic pump 6 is connected in series between the liquid inlet 22 and the liquid outlet 23 on the circulation main pipeline 1; the first solenoid valve 4, the second solenoid valve 5 and the magnetic pump 6 are all connected to a control system, and the opening and closing of the first solenoid valve 4, the second solenoid valve 5 and the magnetic pump 6 and the opening duration are controlled by the control system; a sampling port 31 is opened on the sampling container 3, and a silicone seal is sealed at the sampling port 31, and sampling can be performed by piercing the silicone seal with a syringe. When sampling is required, the electromagnetic pump 6 is turned on by the control system. After the electromagnetic pump 6 is turned on for a certain period of time, the first electromagnetic valve 4 and the second electromagnetic valve 5 are opened, and the material enters the sampling branch pipe 2 through the liquid inlet 22. After the material circulates in the sampling branch pipe 2 for a certain period of time, the first electromagnetic valve 4 and the second electromagnetic valve 5 are closed, and then the sampling container 3 is removed and transferred to a specific environment. The sampling test can be performed by piercing the silicone seal with a syringe. The present application first uses a sampling container 3 with a smaller volume for closed sampling. After the material in the sampling container 3 reaches the required capacity, it can be disassembled and transferred to the glove box, and then a syringe is used for sampling and testing. The sampling process is in a closed state throughout, which avoids contact between the material and the air and improves the accuracy and stability of the test.

[0030] It should be noted that in order to achieve closed sampling, the sampling container 3 of the present application can be detachably connected to the sampling branch pipe 2, and the disassembly process of the sampling container 3 is carried out in a sealed manner, that is, there is no contact between the material and the air during the disassembly process, thereby ensuring the stability of the material quality.

[0031] In a specific embodiment, Figure 2 As shown, a first connecting tube 32 and a second connecting tube 33 are fixed on the sampling container 3, and the first connecting tube 32 and the second connecting tube 33 are respectively sealed with a quick connector male end 34. The sampling branch tube 3 includes a first sampling branch tube and a second sampling branch tube, one end of the first sampling branch tube and one end of the second sampling branch tube are both sealed with a quick connector female end, the other end of the first sampling branch tube is the liquid inlet 22, and the other end of the second sampling branch tube is the liquid outlet 23. The quick connector male end 34 and the quick connector female end are plugged in and connected, and the material will not leak during the plugging and unplugging process, which is convenient and quick, and the sampling process is fully closed to avoid contact between the material and the air. After the sampling container 3 is removed and transferred to a specific environment, a syringe is used to take samples for testing.

[0032] In some embodiments, the first connecting tube 32 and the second connecting tube 33 are respectively located at the top and bottom of the sampling container 3, and the sampling port 31 is located in the middle position between the first connecting tube 32 and the second connecting tube 33. During sampling, the liquid passes through the sampling container 3 from bottom to top. The present application arranges the first connecting tube 32 and the second connecting tube 33 at the top and bottom of the sampling container 3, respectively, to ensure that there is enough liquid in the sampling container 3 for subsequent testing. At the same time, the liquid can also fill the entire sampling container 3 to ensure the purity of the material, thereby indirectly improving the accuracy of the detection.

[0033] In some embodiments, a connector 35 is protruding from the sampling container 3, and the sampling port 31 is set on the connector 35. The silicone seal is a sealing gasket, which is sealed to the sampling port through a nut 36. On the one hand, it is convenient to replace the sealing gasket, and the cost of the sealing gasket is low. On the other hand, it is convenient to open the sampling port 31 through the nut 36 to clean the sampling container 3.

[0034] In other embodiments, the silicone seal is a sealing plug (not shown in the figure), which is sealed and inserted into the sampling port. When sampling, the syringe pierces the sealing plug to take the sample. It can be understood that the sealing plug of the present application is equivalent to the sealing plug at the opening of the infusion bottle. After the syringe pierces the sealing plug, the liquid inside can be extracted. After the syringe is withdrawn, the sampling container remains sealed.

[0035] Specifically, in some embodiments, the control system is a DCS control system, the first solenoid valve 4, the second solenoid valve 5 and the magnetic pump 6 are associated through the DCS control system, and the DCS control system controls the first solenoid valve 4 and the second solenoid valve 5 to open or close synchronously.

[0036] Specifically, the sampling branch pipe 2 is a metal hose, which is easy to install on the circulation main pipe 1.

[0037] In a specific embodiment, the inner diameter of the sampling branch pipe 2 is smaller than the inner diameter of the circulation main pipe 1, ensuring that the liquid can completely fill the sampling branch pipe 2 after the first solenoid valve 4 and the second solenoid valve 5 are opened.

[0038] Specifically, the shape of the sampling container 3 is any one of circular, elliptical or polygonal, preferably circular.

[0039] Specifically, the circulation main pipe 1, the sampling branch pipe 2, the sampling container 3, the first solenoid valve 4, the second solenoid valve 5, and the magnetic pump 6 are all made of stainless steel.

[0040] The above further describes the present invention with the help of specific embodiments, but it should be understood that the specific description here should not be construed as limiting the essence and scope of the present invention. Various modifications made to the above embodiments by ordinary technicians in this field after reading this specification are all within the scope of protection of the present invention.

Claims

1. A closed sampling device, characterized in that: It includes a circulation main pipeline, a sampling branch pipe connected in parallel to the circulation main pipeline, and a sampling container detachably connected to the sampling branch pipe, wherein: The sampling branch pipe is located on both sides of the sampling container and is respectively connected in series with a first solenoid valve and a second solenoid valve. The sampling branch pipe includes a liquid inlet and a liquid outlet, and the sampling branch pipe is connected to the circulation main pipe through the liquid inlet and the liquid outlet. A magnetic pump is connected in series between the liquid inlet and the liquid outlet on the main circulation pipeline; The first solenoid valve, the second solenoid valve and the magnetic pump are all connected to a control system; A sampling port is provided on the sampling container, and a silicone seal is sealed at the sampling port.

2. The closed sampling device according to claim 1, characterized in that: A first connecting tube and a second connecting tube are fixed on the sampling container, and the first connecting tube and the second connecting tube are respectively sealed with a quick connector male end. The sampling branch tube includes a first sampling branch tube and a second sampling branch tube, and one end of the first sampling branch tube and one end of the second sampling branch tube are both sealed with a quick connector female end, and the quick connector male end and the quick connector female end are plugged into connection.

3. The closed sampling device according to claim 2, characterized in that: The first connecting tube and the second connecting tube are respectively located at the top and bottom ends of the sampling container, and the sampling port is located in the middle position between the first connecting tube and the second connecting tube.

4. The closed sampling device according to claim 1, characterized in that: The sampling container is provided with a connector protruding thereon, the sampling port is arranged on the connector, the silicone seal is a sealing gasket, and the sealing gasket is sealed and connected to the sampling port via a nut.

5. The closed sampling device according to claim 1, characterized in that: The silicone seal is a sealing plug, which is sealed into the sampling port.

6. The closed sampling device according to claim 1, characterized in that: The control system is a DCS control system, and the DCS control system controls the first solenoid valve and the second solenoid valve to be opened or closed synchronously.

7. The closed sampling device according to claim 1, characterized in that: The sampling branch pipe is a metal hose.

8. The closed sampling device according to claim 1, characterized in that: The inner diameter of the sampling branch pipe is smaller than the inner diameter of the circulation main pipe.

9. The closed sampling device according to claim 1, characterized in that: The shape of the sampling container is any one of circular, elliptical or polygonal.

10. The closed sampling device according to claim 1, characterized in that: The circulation main pipeline, the sampling branch pipe, the sampling container, the first solenoid valve, the second solenoid valve and the magnetic pump are all made of stainless steel.

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