CN219533275U

CN219533275U - Flow cell

Info

Publication number: CN219533275U
Application number: CN202320292723.8U
Authority: CN
Inventors: 戚文祥
Original assignee: Shanghai Mingsheng Electric Engineering Co ltd
Current assignee: Shanghai Mingsheng Electric Engineering Co ltd
Priority date: 2023-02-22
Filing date: 2023-02-22
Publication date: 2023-08-15
Anticipated expiration: 2033-02-22

Abstract

The utility model relates to the field of power devices, in particular to a flow cell. Its technical scheme includes the flow cell, fixed mounting has the positive plate to insert the pipe on the outer wall of flow cell, and the bottom fixed mounting of flow cell has the negative plate to insert the pipe, and the top fixed mounting of flow cell has the connecting pipe, and the top of flow cell is equipped with the cistern, and the capacity of cistern is greater than the capacity of flow cell, and the one end and the cistern threaded connection and rather than inside intercommunication of flow cell are kept away from to the connecting pipe, movable mounting has the rubber piston in the cistern, and the last fixed surface of rubber piston installs the piston rod. The utility model has the beneficial effects that: can store the sample through the cistern, promote the piston rod and drive the rubber piston and move down, can pour into the flow cell with the sample in, after the inside full sample of flow cell, rotate the valve and close the connecting pipe, not only can fill the sample in the flow cell this moment to can prevent that the air from getting into the flow cell inside, effectively improve measuring result's precision.

Description

Flow cell

Technical Field

The utility model relates to the field of power devices, in particular to a flow cell.

Background

The conductivity flow cell is suitable for measuring low conductivity samples, such as pure water and ultrapure water samples, pouring the samples into the flow cell, connecting the positive electrode chip and the negative electrode chip to the interface of the flow cell, and measuring the conductivity of the samples after the detection circuit is electrified. In order to facilitate pouring the sample into the flow cell, a cap with a threaded connection structure is usually arranged on the flow cell, and after the sample is poured into the flow cell, the cap is plugged at the opening of the flow cell to prevent the sample from leaking.

In the practical use process of the traditional flow cell, most of the traditional flow cell is to pour samples (pure water, ultrapure water and the like) into the flow cell, ensure that the flow cell is filled with the samples, and then seal the cap at the opening of the flow cell, so that the samples are effectively prevented from leaking. However, in the actual operation process, if the sample poured into the flow cell is excessive, the sample overflows when the cap is installed, if the sample is not filled in the flow cell, air is easy to enter the flow cell when the cap is installed, and the accuracy of a measuring structure can be reduced due to contact of the water sample and the air during measurement; in view of this, we propose a flow cell that can prevent air from entering the flow cell and thereby improve the accuracy of the measurement results.

Disclosure of Invention

The utility model aims at solving the problems in the background art and provides a flow cell which can prevent air from entering the flow cell and improve the accuracy of measurement results.

The technical scheme of the utility model is as follows: the utility model provides a flow cell, includes the flow cell, fixed mounting has positive plate access pipe on the outer wall of flow cell, the bottom fixed mounting of flow cell has the negative plate access pipe, the top fixed mounting of flow cell has the connecting pipe, the top of flow cell is equipped with the cistern, the capacity of cistern is greater than the capacity of flow cell, the one end and the cistern threaded connection and rather than inside intercommunication of flow cell are kept away from to the connecting pipe, movable mounting has rubber piston in the cistern, rubber piston's upper surface fixed mounting has the piston rod, the top of piston rod passes the circular opening of cistern roof department and extends to its outside.

Preferably, the ball-type valve core is rotatably arranged in the connecting pipe, the valve rod is arranged on the pipe wall of the connecting pipe in a threaded manner, one end of the valve rod is inserted into the connecting pipe and fixedly connected with the ball-type valve core, the ball valve is adopted to control the opening and closing of the connecting pipe, so that a sample in the reservoir is conveniently led into the flow cell, and the flow cell is conveniently sealed.

Preferably, the bottom fixed mounting of cistern has the internal thread sleeve pipe, the top of connecting pipe is equipped with external screw thread interface, the external screw thread interface inserts in the internal thread sleeve pipe and rather than threaded connection, adopts threaded connection structure, is convenient for install the cistern on the flow cell to conveniently dismantle it.

Preferably, a second rubber sealing ring is arranged in the internal thread sleeve, the top of the external thread connector is in tight contact with the second rubber sealing ring, the top of the external thread connector is sealed by the second rubber sealing ring, and the sealing effect of the contact end of the external thread connector and the internal thread sleeve is effectively improved.

Preferably, the outer wall of the external thread connector is movably sleeved with a first rubber sealing ring, the bottom of the internal thread sleeve is tightly contacted with the first rubber sealing ring, the bottom of the internal thread sleeve is sealed by the first rubber sealing ring, and the sealing effect of the joint of the internal thread sleeve and the external thread connector is further enhanced.

Preferably, a third rubber sealing ring is fixedly arranged at the inner wall of the circular opening on the top plate of the reservoir, the outer wall of the piston rod is tightly contacted with the inner wall of the third rubber sealing ring, gaps at the contact position of the circular opening and the piston rod are filled, and the piston rod can be prevented from shaking when being pushed.

Compared with the prior art, the utility model has the following beneficial technical effects: can store the sample through the cistern, promote the piston rod and drive the rubber piston and move down, can pour into the flow cell with the sample in, after the inside full sample of flow cell, rotate the valve and close the connecting pipe, not only can fill the sample in the flow cell this moment to can prevent that the air from getting into the flow cell inside, effectively improve measuring result's precision.

Drawings

FIG. 1 is a schematic diagram of the overall structure of the present utility model;

FIG. 2 is a schematic diagram of a reservoir according to the present utility model;

fig. 3 is a schematic view of a connecting pipe structure according to the present utility model.

Reference numerals: 1. a flow cell; 2. the positive plate is connected with the pipe; 3. a connecting pipe; 31. a ball valve core; 32. an external threaded interface; 33. a first rubber seal ring; 34. a valve stem; 4. a reservoir; 41. an internally threaded sleeve; 42. a second rubber seal ring; 43. a third rubber seal ring; 5. a piston rod; 51. a rubber piston; 6. the negative electrode plate is connected into the pipe.

Detailed Description

The technical scheme of the utility model is further described below with reference to the attached drawings and specific embodiments.

Examples

As shown in fig. 1-3, the flow cell provided by the utility model comprises a flow cell 1 and a reservoir 4, wherein an anode plate access pipe 2 is integrally formed on the outer wall of the flow cell 1 by adopting an injection molding process, a cathode plate access pipe 6 is integrally formed at the bottom end of the flow cell 1 by adopting an injection molding process, and when a sample (pure water, ultrapure water and the like) is subjected to conductivity measurement, the anode of a circuit can be butted at the anode plate access pipe 2, the cathode of the circuit is butted at the cathode plate access pipe 6, so that the flow cell 1 is ensured to be connected into a electrified circuit; the top end opening of the flow cell 1 is fixedly provided with a connecting pipe 3 by adopting a cementing process, the connecting pipe 3 is in threaded connection with an internal threaded sleeve 41 fixedly arranged at the bottom of a reservoir 4, a rubber piston 51 is movably arranged in the reservoir 4, a piston rod 5 is fixedly arranged at the top of the rubber piston 51, the top end of the piston rod 5 penetrates through a circular opening at the top of the reservoir 4 and extends to the outside of the circular opening, the piston rod 5 is pushed to drive the rubber piston 51 to move downwards, so that a sample in the reservoir 4 is conveniently pressed into the connecting pipe 3, and finally the sample is filled into the flow cell 1 along the connecting pipe 3; after the flow cell 1 is full of the sample, the ball valve installed on the connecting pipe 3 is rotated, the connecting pipe 3 can be closed, the tightness of the flow cell 1 is guaranteed, the sample is prevented from leaking outwards, the sample is added into the flow cell 1 in a water injection mode, air can be prevented from entering the flow cell 1, and the accuracy of a measuring result is effectively improved.

Further, the top end of the connecting pipe 3 is integrally formed with an external threaded interface 32 by adopting an injection molding process, the external threaded interface 32 is embedded into the internal threaded sleeve 41 and is in threaded connection with the internal threaded sleeve, and a threaded connection structure is adopted, so that the reservoir 4 and the flow cell 1 are conveniently assembled together, and the reservoir and the flow cell 1 are conveniently disassembled; after the measurement is finished, the sample in the flow cell 1 can be pumped into the reservoir 4, and then the reservoir 4 is detached, so that the sample can be conveniently pushed out of the reservoir 4, and the sample can be conveniently replaced.

Further, the ball valve is installed on the connecting pipe 3, the ball valve core 31 of the ball valve is rotatably installed in the connecting pipe 3, the valve rod 34 of the ball valve is threaded on the pipe wall of the connecting pipe 3, the valve rod 34 is fixedly connected with the ball valve core 31, and the ball valve core 31 can be driven to rotate by rotating the valve rod 34, so that the opening and closing of the connecting pipe 3 can be controlled conveniently.

Further, the second rubber sealing ring 42 is placed inside the internal thread sleeve 41, the first rubber sealing ring 33 is movably sleeved on the outer wall of the external thread connector 32, after the external thread connector 32 is in threaded butt joint with the internal thread sleeve 41, the first rubber sealing ring 33 can seal the bottom end of the internal thread sleeve 41, the second rubber sealing ring 42 can seal the top of the external thread connector 32, and the sealing effect of the joint of the external thread connector 32 and the internal thread sleeve 41 can be improved by adopting a double sealing structure.

In this embodiment, firstly, a sample (pure water, ultrapure water, etc.) is stored in the reservoir 4, the piston rod 5 is pushed downwards to drive the rubber piston 51 to move downwards, then the sample in the reservoir 4 is pressed into the connecting pipe 3, so that the sample can flow into the flow cell 1 along the connecting pipe 3, after the flow cell 1 is filled with the sample, the ball valve on the connecting pipe 3 is rotated and the connecting pipe 3 is closed, and then the tightness of the flow cell 1 can be ensured; the positive electrode of the circuit is abutted to the positive electrode plate access pipe 2, the negative electrode of the circuit is abutted to the negative electrode plate access pipe 6, so that the flow cell 1 and samples in the flow cell 1 can be accessed to the electrified circuit, and the conductivity of the samples can be measured conveniently; after the measurement is finished, the ball valve can be rotated, the connecting pipe 3 is opened, the flow cell 1 is inverted, the piston rod 5 is pulled towards one side far away from the flow cell 1, so that a sample in the flow cell 1 can be pumped back into the reservoir 4, the reservoir 4 is rotated, the connecting pipe 3 is disconnected with the internally threaded sleeve 41, the reservoir 4 can be taken down, and the sample in the reservoir 4 can be extruded by pushing the piston rod 5 at the moment, so that the sample can be replaced conveniently; this flow cell adopts the mode of water injection, can pour into the sample into flow cell 1 inside, can prevent that flow cell 1 from inside entering air, has effectively improved measuring result's precision.

The above-described embodiments are merely a few preferred embodiments of the present utility model, and many alternative modifications and combinations of the above-described embodiments will be apparent to those skilled in the art based on the technical solutions of the present utility model and the related teachings of the above-described embodiments.

Claims

1. A flow cell comprising a flow cell (1), characterized in that: the positive plate connecting pipe (2) is fixedly installed on the outer wall of the flow cell (1), the negative plate connecting pipe (6) is fixedly installed at the bottom end of the flow cell (1), the connecting pipe (3) is fixedly installed at the top of the flow cell (1), the reservoir (4) is arranged above the flow cell (1), the capacity of the reservoir (4) is larger than that of the flow cell (1), one end, away from the flow cell (1), of the connecting pipe (3) is in threaded connection with the reservoir (4) and is communicated with the inside of the reservoir, the rubber piston (51) is movably installed in the reservoir (4), the piston rod (5) is fixedly installed on the upper surface of the rubber piston (51), and the top end of the piston rod (5) penetrates through a circular opening in the top plate of the reservoir (4) and extends to the outside of the reservoir.

2. A flow cell according to claim 1, characterized in that the spherical valve core (31) is rotatably mounted in the connecting pipe (3), a valve rod (34) is mounted on the pipe wall of the connecting pipe (3) in a threaded manner, and one end of the valve rod (34) is inserted into the connecting pipe (3) and fixedly connected with the spherical valve core (31).

3. A flow-through cell according to claim 1, characterized in that the bottom end of the reservoir (4) is fixedly provided with an internally threaded sleeve (41), the top end of the connecting tube (3) is provided with an externally threaded interface (32), and the externally threaded interface (32) is inserted into the internally threaded sleeve (41) and is in threaded connection therewith.

4. A flow cell according to claim 3, characterized in that a second rubber sealing ring (42) is arranged in the internally threaded sleeve (41), and the top of the externally threaded interface (32) is in close contact with the second rubber sealing ring (42).

5. A flow cell according to claim 3, characterized in that the outer wall of the male connector (32) is movably sleeved with a first rubber sealing ring (33), and the bottom of the female sleeve (41) is in close contact with the first rubber sealing ring (33).

6. A flow-through cell according to claim 1, characterized in that a third rubber sealing ring (43) is fixedly arranged at the inner wall of the circular opening on the top plate of the reservoir (4), and the outer wall of the piston rod (5) is tightly contacted with the inner wall of the third rubber sealing ring (43).