CN220380819U

CN220380819U - Quantitative sampling device of reaction kettle for preparing P507

Info

Publication number: CN220380819U
Application number: CN202323392663.6U
Authority: CN
Inventors: 李进波; 王亚涛; 姚伟杰; 于永洋
Original assignee: Sannuo New Materials Technology Luoyang Co ltd
Current assignee: Sannuo New Materials Technology Luoyang Co ltd
Priority date: 2023-12-13
Filing date: 2023-12-13
Publication date: 2024-01-23
Anticipated expiration: 2033-12-13

Abstract

A quantitative sampling device for preparing a reaction kettle for P507 comprises a liquid level meter arranged on the reaction kettle; the liquid level meter mainly comprises a liquid inlet pipe, a cylinder body and an air outlet pipe, wherein the lower end of the cylinder body is connected with a sampling bottle through a first valve; the sampling bottle is provided with a communicating pipe and a liquid discharge pipe, the communicating pipe is communicated with the air outlet pipe through a second valve, and the liquid discharge pipe is connected with a third valve for discharging sampling liquid in the sampling bottle. A piston is arranged in the cylinder body, when the liquid level is not required to be observed, the piston is moved to the lower end of the cylinder body to block the liquid inlet pipe, and at the moment, the reaction liquid in the kettle cannot enter the cylinder body, so that the reaction liquid can completely participate in the reaction in the kettle; when the liquid level is required to be observed, the piston is moved to the upper end of the cylinder body, and the liquid level meter is in an open state at the moment, so that the liquid level of the reaction liquid in the kettle can be displayed. In the process of downward movement of the piston, the reaction liquid in the cylinder is hydraulically pressed into the sampling bottle, and the sampling liquid in the sampling bottle is quantitatively taken out through the sequence switch of each valve, so that the sampling safety is ensured.

Description

Quantitative sampling device of reaction kettle for preparing P507

Technical Field

The utility model relates to the technical field of extractant preparation, in particular to a quantitative sampling device of a reaction kettle for preparing P507.

Background

P507 is an acidic phosphorus extractant, and is widely applied to the extraction separation of nonferrous metals and rare earth elements. Since P507 is toxic and harmful gases such as hydrogen chloride are generated during the preparation process, a closed reaction vessel must be used for preparing P507.

According to the requirements of the preparation process, the reaction liquid in the reaction kettle is also periodically subjected to quantitative sampling detection during the preparation. Because the reaction kettle needs to be closed, the way of opening the tank and sampling is not applicable any more. A sampling valve is usually arranged at the bottom of the reaction kettle, and sampling is performed by opening the sampling valve. However, P507 is toxic and the pressure in the reaction vessel is high, so that the sampling valve cannot be used to discharge the sample solution, which causes the injection of the reaction solution and the leakage of toxic and harmful substances.

In addition, a liquid level meter is required to be arranged on the reaction kettle to observe the liquid level of the reaction liquid, but the reaction liquid in the liquid level meter has poor fluidity, and is difficult to participate in the reaction in the kettle, so that partial reaction liquid cannot be completely reacted.

Disclosure of Invention

In order to overcome the defects in the background technology, the utility model discloses a quantitative sampling device of a reaction kettle for preparing P507, which adopts the following technical scheme:

a quantitative sampling device for preparing a reaction kettle for P507 comprises a liquid level meter arranged on the reaction kettle; the liquid level meter mainly comprises a liquid inlet pipe, a cylinder body and an air outlet pipe, wherein the lower end of the cylinder body is connected with a sampling bottle through a first valve; the sampling bottle is provided with a communicating pipe and a liquid discharge pipe, the communicating pipe is communicated with the air outlet pipe through a second valve, and the liquid discharge pipe is connected with a third valve and is used for discharging sampling liquid in the sampling bottle; a piston is arranged in the cylinder, and when the piston moves to the lower end of the cylinder, the liquid level meter is in a closed state; when the piston moves to the upper end of the cylinder, the liquid level gauge is in an open state.

After the technical scheme is implemented, the following beneficial effects can be obtained:

1. when the liquid level does not need to be observed, the piston is moved to the lower end of the cylinder body to plug the liquid inlet pipe, at the moment, the liquid level meter is in a closed state, and the reaction liquid in the kettle cannot enter the cylinder body, so that the reaction liquid can completely participate in the reaction in the kettle; when the liquid level is required to be observed, the piston is moved to the upper end of the cylinder, at the moment, the liquid inlet pipe, the cylinder and the air outlet pipe are communicated, and the liquid level meter is in an open state, so that the liquid level of the reaction liquid in the kettle can be displayed.

2. In the process of downward movement of the piston, the reaction liquid in the cylinder can be pressed into the sampling bottle, and the sampling liquid in the sampling bottle is quantitatively taken out through the sequence switch of each valve. The whole process does not directly contact the sampling liquid, and the leakage of the sampling liquid and toxic and harmful gas is avoided, so that the safety of sampling is ensured.

Further improving the technical proposal, the cylinder body and the sampling bottle are made of transparent materials. Or, a liquid level window is arranged on the cylinder body and the sampling bottle.

After implementing the technical scheme, the beneficial effects that it obtained are: the liquid level of the reaction liquid in the barrel is convenient to observe, and the filling condition of the sampling liquid in the sampling bottle is convenient to observe.

According to the technical scheme, the sampling bottle is further provided with an air inlet pipe communicated with the outside air, and a fourth valve is connected to the air inlet pipe.

After implementing the technical scheme, the beneficial effects that it obtained are: after the fourth valve is opened, external air can enter the sampling bottle, and the liquid discharge pipe is helped to rapidly discharge sampling liquid.

Further improving the technical scheme, be provided with the liquid return pipe between the lower extreme of barrel and feed liquor pipe, be provided with the muffler between the upper end of barrel and outlet duct.

After implementing the technical scheme, the beneficial effects that it obtained are: the liquid return pipe is arranged to reduce the upward thrust exerted by the reaction liquid in the kettle on the piston, so that the piston is positioned at the lower end of the cylinder; when the piston moves to the upper end of the cylinder, the air return pipe can balance the pressure difference between the upper side and the lower side of the piston, so that the up-and-down movement of the piston is free from resistance.

Further improving the technical proposal, the communicating pipe is communicated with the air outlet pipe through the air return pipe.

Further improving the technical scheme, the piston is connected with a push-pull rod with a handle, and the push-pull rod is in dynamic sealing connection with the upper end of the cylinder body.

After implementing the technical scheme, the beneficial effects that it obtained are: the push-pull rod and the handle are arranged, so that the piston can be manually operated to move up and down.

Drawings

Fig. 1 is a schematic structural view of the quantitative sampling device.

Fig. 2 shows a schematic diagram of the structure of the gauge in the closed state.

Fig. 3 shows a schematic view of the structure of the gauge in the open state.

Fig. 4 shows a schematic diagram of the piston moving downwards during sampling.

Fig. 5 shows a schematic diagram of the piston moving to the lower end of the cylinder during sampling.

In the figure:

1. a reaction kettle;

2. a liquid level gauge; 21. a cylinder; 22. a liquid inlet pipe; 23. a liquid return pipe; 24. an air outlet pipe; 25. an air return pipe;

3. a piston; 31. a push-pull rod; 32. a handle;

4. sampling bottle; 41. a communicating pipe; 42. a liquid discharge pipe; 43. an air inlet pipe;

5. a first valve;

6. a second valve;

7. a third valve;

8. a fourth valve;

9. the gas section is enclosed.

Detailed Description

Preferred embodiments of the present utility model are described below with reference to the accompanying drawings. It should be understood by those skilled in the art that these embodiments are merely for explaining the technical principles of the present utility model, and are not intended to limit the scope of the present utility model. It should be noted that, in the description of the present utility model, terms such as "front", "rear", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate directions or positional relationships based on the directions or positional relationships shown in the drawings, which are merely for convenience of description, and do not indicate or imply that the devices or elements must have a specific orientation, be constructed and operated in a specific orientation, and thus are not to be construed as limiting the present utility model. It should also be noted that, in the description of the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; either directly or indirectly through intermediaries, or in communication with each other. The specific meaning of the above terms in the present utility model can be understood by those skilled in the art according to the specific circumstances.

As shown in FIG. 1, a quantitative sampling device of a reaction kettle for preparing P507 comprises a liquid level meter 2 arranged on a reaction kettle 1.

Reference is made to fig. 1 and 2. The liquid level meter 2 mainly comprises a liquid inlet pipe 22, a cylinder 21 and an air outlet pipe 24, wherein the liquid inlet pipe 22 is communicated with a liquid phase medium (reaction liquid) in the reaction kettle 1, and the air outlet pipe 24 is communicated with a gas phase medium in the reaction kettle 1. The cylinder 21 may be made of transparent material, or a transparent liquid level window may be provided on the opaque cylinder 21, so that the liquid level of the reaction liquid in the cylinder 21 is convenient to observe.

The lower extreme of barrel 21 is connected with sample bottle 4 through first valve 5, and sample bottle 4 can be made by transparent material, also can set up transparent liquid level window on opaque sample bottle 4, is convenient for observe the filling condition of sample liquid in the sample bottle 4 like this. The sampling bottle 4 has a communicating tube 41 and a drain tube 42. Wherein, communicating pipe 41 communicates with outlet duct 24 through second valve 6, and the fluid-discharge tube 42 is connected with third valve 7 for discharging the sample liquid in sample bottle 4. In order to facilitate the smooth discharge of the sample liquid, the sample bottle 4 further has an air inlet pipe 43 communicating with the outside air, and a fourth valve 8 is connected to the air inlet pipe 43.

The piston 3 is arranged in the cylinder 21, the piston 3 is connected with a push-pull rod 31 with a handle 32, and the push-pull rod 31 is in dynamic sealing connection with the upper end of the cylinder 21, so that the piston 3 can move up and down in the cylinder 21 by pushing the handle 32.

Reference is made to fig. 2. When the liquid level does not need to be observed, the piston 3 is moved to the lower end of the cylinder 21 to block the liquid inlet pipe 22, the liquid level meter 2 is in a closed state at this time, and the reaction liquid in the kettle cannot enter the cylinder 21, so that the reaction liquid can completely participate in the reaction in the kettle.

A liquid return pipe 23 is arranged between the lower end of the cylinder 21 and the liquid inlet pipe 22, and the pipe diameter of the liquid return pipe 23 is smaller than that of the cylinder 21. Two liquid return pipes 23 are provided, one is to discharge liquid in the blind hole at the lower end of the cylinder 21, balance pressure and enable the piston 3 to enter the blind hole. Secondly, the liquid level of the reaction liquid in the kettle is larger than the height of the piston 3, and the reaction liquid in the kettle can possibly push the piston 3 to move upwards under the action of pressure difference. Because the pipe diameter of the liquid return pipe 23 is smaller than that of the cylinder 21, the pressure P is constant according to the pascal principle f=p×s, and the smaller the acting area S and the smaller the acting force F, the upward thrust generated by the pressure difference on the piston 3 can be reduced exponentially, so that the piston 3 can be positioned at the lower end of the cylinder 21 for a long time without the action of external force, and the liquid inlet pipe 22 is plugged.

Reference is made to fig. 3. When the liquid level is required to be observed, the piston 3 is moved to the upper end of the cylinder 21, at the moment, the liquid inlet pipe 22, the cylinder 21 and the air outlet pipe 24 are communicated, the liquid level meter 2 is in an open state, and the cylinder 21 can display the liquid level of the reaction liquid in the kettle. In order to eliminate the upward resistance of the piston 3, an air return pipe 25 is provided between the upper end of the cylinder 21 and the air outlet pipe 24, and the air return pipe 25 is used for balancing the pressure difference between the upper side and the lower side of the piston 3, so that the upward and downward movement of the piston 3 is not resisted.

Sampling:

reference is made to fig. 2 and 3. Firstly, the piston 3 is moved from the lower end of the cylinder 21 to the upper end of the cylinder 21 through the handle 32 and the push-pull rod 31, so that the reaction liquid in the kettle enters the cylinder 21, the liquid level meter 2 is in an open state, and the cylinder 21 displays the liquid level of the reaction liquid in the kettle.

Reference is made to fig. 4. Then the first valve 5 and the second valve 6 are opened, and the piston 3 is pushed to move downwards, and a closed gas section 9 exists between the piston 3 and the reaction liquid. Since the liquid level of the reaction liquid in the kettle is higher than the height of the sampling bottle 4, most of the reaction liquid in the cylinder 21 enters the sampling bottle 4 and the gas in the sampling bottle 4 is discharged into the reaction kettle 1 through the communicating pipe 41, the gas return pipe 25 and the gas outlet pipe 24. When the sampling bottle 4 is filled with the reaction liquid, the first valve 5 and the second valve 6 are closed.

Reference is made to fig. 5. When the piston 3 moves to the lower end of the cylinder 21, the gas of the closed gas section 9 enters the liquid inlet pipe 22 and the liquid return pipe 23, a section of closed cavity area is formed, and the reaction liquid in the liquid inlet pipe 22 and the liquid return pipe 23 is discharged into the reaction kettle 1 to participate in the reaction in the kettle. At the same time, the piston 3 closes off the inlet pipe 22, and the level gauge 2 is again in the closed state. Then the third valve 7 and the fourth valve 8 are opened to discharge the sampling liquid in the sampling bottle 4, and the sampling is completed.

Since the capacity of the sampling bottle 4 is fixed, quantitative sampling of the reaction liquid is achieved. And moreover, the whole process does not directly contact the sampling liquid, and leakage of the sampling liquid and toxic and harmful gas is avoided, so that the safety of sampling is ensured.

The parts not described in detail are prior art. Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the spirit and scope of the utility model as defined by the appended claims and their equivalents.

Claims

1. A quantitative sampling device of a reaction kettle for preparing P507 is characterized in that: comprises a liquid level meter arranged on a reaction kettle; the liquid level meter mainly comprises a liquid inlet pipe, a cylinder body and an air outlet pipe, wherein the lower end of the cylinder body is connected with a sampling bottle through a first valve; the sampling bottle is provided with a communicating pipe and a liquid discharge pipe, the communicating pipe is communicated with the air outlet pipe through a second valve, and the liquid discharge pipe is connected with a third valve and is used for discharging sampling liquid in the sampling bottle; a piston is arranged in the cylinder, and when the piston moves to the lower end of the cylinder, the liquid level meter is in a closed state; when the piston moves to the upper end of the cylinder, the liquid level gauge is in an open state.

2. The quantitative sampling device for preparing a reaction kettle for P507 according to claim 1, wherein: the barrel and the sampling bottle are made of transparent materials.

3. The quantitative sampling device for preparing a reaction kettle for P507 according to claim 1, wherein: the cylinder body and the sampling bottle are provided with a liquid level window.

4. The quantitative sampling device for preparing a reaction kettle for P507 according to claim 1, wherein: the sampling bottle is also provided with an air inlet pipe communicated with the outside air, and a fourth valve is connected to the air inlet pipe.

5. The quantitative sampling device for preparing a reaction kettle for P507 according to claim 1, wherein: a liquid return pipe is arranged between the lower end of the cylinder and the liquid inlet pipe, and a gas return pipe is arranged between the upper end of the cylinder and the gas outlet pipe.

6. The quantitative sampling device for preparing a reaction kettle for P507 according to claim 5, wherein: the communicating pipe is communicated with the air outlet pipe through an air return pipe.

7. The quantitative sampling device for preparing a reaction kettle for P507 according to claim 1, wherein: the piston is connected with a push-pull rod with a handle, and the push-pull rod is in dynamic sealing connection with the upper end of the cylinder body.