Hydrochloric acid sampling box

Abstract

The utility model relates to a hydrochloric acid sampling box. The hydrochloric acid sampling box comprises a box body and a box door hinged to the box body, a negative pressure pipe is arranged on the box body, one end of the negative pressure pipe is communicated with the interior of the box body, the other end of the negative pressure pipe is used for being connected with negative pressure equipment, a liquid discharging pipe is arranged on the box body, a liquid discharging valve is arranged on the liquid discharging pipe, a sample feeding pipe is arranged on the box body, one end of the sample feeding pipe extends into the box body, and a sample feeding valve is arranged on the sample feeding pipe. A flushing pipe with one end extending into the box body is arranged on the box body, and a flushing valve is arranged on the flushing pipe. The box body is in a cylinder shape with an opening in the upper end, the upper end of the box body is fixedly connected with a major-arc-shaped fixing plate, the box door is in a minor-arc shape, and the straight face end of the box door is hinged to the straight face end of the fixing plate through a hinge. And the curved surface end of the box door is fixedly connected with a handle. The negative pressure pipe is fixedly connected to the fixing plate through a flange, the negative pressure pipe and a circular plate formed by the fixing plate and the box door are coaxially arranged, and the liquid discharging pipe and the negative pressure pipe are coaxially arranged. The hydrochloric acid sampling box is simple in structure and convenient to use, and the hydrochloric acid sampling safety is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of lithium hexafluorophosphate production, and particularly relates to a hydrochloric acid sampling box. Background Art

[0002] In the industrial production process of lithium hexafluorophosphate, the most stable and commonly used method is the wet preparation process. The specific steps are roughly as follows: lithium fluoride powder is added to anhydrous hydrogen fluoride to form a LiF·HF solution of lithium fluoride, and then phosphorus pentafluoride is introduced into the solution to react to produce a LiPF6·HF solution in which lithium hexafluorophosphate is dissolved. The LiPF6·HF solution is then cooled and crystallized, separated and dried to obtain lithium hexafluorophosphate crystals.

[0003] The above production process generates large amounts of waste gases, including phosphorus pentafluoride, hydrogen fluoride, and hydrogen chloride, all of which have high recycling value. Currently, tail gas treatment equipment is commonly used to recycle the tail gas. The hydrogen chloride in the tail gas is typically absorbed by water to form hydrochloric acid. To recycle the hydrochloric acid, it is usually necessary to sample and test the hydrochloric acid. Operators must hand-hold sampling bottles to collect samples, which can easily cause injuries and pose a safety risk. Utility Model Content

[0004] In order to solve the above technical problems, the utility model provides a hydrochloric acid sampling box.

[0005] The technical solution of a hydrochloric acid sampling box of the utility model is:

[0006] A hydrochloric acid sampling box comprises a box body and a box door hinged on the box body; the box body is provided with a negative pressure tube with one end connected to the interior of the box body and the other end for connecting to a negative pressure device; the box body is provided with a drain pipe with a drain valve; the box body is provided with an injection tube with one end extending into the box body; the injection tube is provided with an injection valve; the box body is provided with a flushing tube with one end extending into the box body; the flushing tube is provided with a flushing valve.

[0007] Furthermore, the box body is cylindrical with an open upper end, the upper end of the box body is fixedly connected to a fixing plate with a major arc shape, the box door is in a minor arc shape, and the straight end of the box door is hinged to the straight end of the fixing plate through a hinge.

[0008] Furthermore, a handle is fixedly connected to the curved end of the door.

[0009] Furthermore, the negative pressure pipe is fixedly connected to the fixed plate through a flange, the negative pressure pipe is coaxially arranged with the circular plate formed by the fixed plate and the box door, and the drain pipe is coaxially arranged with the negative pressure pipe.

[0010] Furthermore, the drain valve is fixedly connected to the drain pipe via a flange.

[0011] Furthermore, the negative pressure pipe includes a lower tube body and an upper tube body, the lower tube body is fixedly connected to the fixed plate, the upper end of the lower tube body is provided with a lower flange, and the lower end of the upper tube body is provided with an upper flange, the upper flange is a frustum-shaped structure with a small top and a large bottom, and the lower flange is a frustum-shaped structure with a large top and a small bottom. A control valve is provided on the negative pressure pipe, and the upper and lower ends of the control valve are respectively fixedly connected to the upper flange and the lower flange.

[0012] Furthermore, the sampling tube is L-shaped, and corresponding through holes are provided on the lower flange plate and the lower flange of the control valve. The vertical section of the sampling tube is inserted into the through hole and fixedly connected to the lower flange of the control valve through a fixed flange.

[0013] Furthermore, a bracket is provided on the lower side of the box body, and the bracket includes a support plate and support legs fixedly connected to the four corners of the lower side of the support plate. The box body is fixedly connected to the upper side of the support plate, and two adjacent support legs are fixedly connected by a connecting rod.

[0014] The utility model provides a hydrochloric acid sampling box, which has the following beneficial effects compared with the prior art:

[0015] When the hydrochloric acid sampling box of the present invention is used, the liquid inlet valve and the liquid discharge valve are opened to perform the liquid discharge operation to ensure that the sampling is representative. The liquid inlet valve and the liquid discharge valve are closed, the box door is opened, and the sampling bottle is placed in the box. The sampling bottle is repeatedly cleaned by opening and closing the liquid inlet valve, and hydrochloric acid is poured into the box. After the sampling bottle is cleaned, the liquid inlet valve is opened, and the sample enters the sampling bottle. When there is a sufficient amount of hydrochloric acid in the sampling bottle, the liquid inlet valve is closed. The box door is opened and the sampling bottle is taken out. During this process, the negative pressure device is turned on throughout. After sampling, the flushing valve is opened to flush the sample bottle and the interior of the box. The hydrochloric acid sampling box of the present invention has a simple structure, is easy to use, and improves the safety of hydrochloric acid sampling. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the structure of the hydrochloric acid sampling box of the utility model Figure 1 ;

[0017] Figure 2 This is a schematic diagram of the structure of the hydrochloric acid sampling box of the utility model Figure 2 ;

[0018] Figure 3 This is a partial structural diagram of the hydrochloric acid sampling box of the utility model;

[0019] In the figure: 1. Box body; 2. Fixed plate; 3. Box door; 4. Handle; 5. Support plate; 6. Support leg; 7. Connecting rod; 8. Upper tube body; 9. Lower tube body; 10. Control valve; 11. Upper flange; 12. Lower flange; 13. Drain pipe; 14. Drain valve; 15. Flushing pipe; 16. Flushing valve; 17. Injection tube; 18. Injection valve; 19. Fixed flange. DETAILED DESCRIPTION

[0020] The present invention is described in further detail below with reference to the accompanying drawings and specific embodiments:

[0021] The specific embodiment of the hydrochloric acid sampling box of the present utility model is as follows Figures 1 to 3 As shown, it includes a box body 1 and a box door 3 hinged on the box body 1, the box body 1 is provided with a negative pressure tube with one end connected to the interior of the box body 1 and the other end for connecting to the negative pressure equipment, the box body 1 is provided with a drain pipe 13, the drain pipe 13 is provided with a drain valve 14, the box body 1 is provided with an injection tube 18 with one end extending into the box body 1, the injection tube 18 is provided with an injection valve 18, the box body 1 is provided with a flushing tube 15 with one end extending into the box body 1, and the flushing tube 15 is provided with a flushing valve 16.

[0022] The housing 1 is cylindrical with an open top. A major-curve fixed plate 2 is fixedly attached to the top of the housing 1. A minor-curve door 3 is hinged on the straight end of the door 3. A handle 4 is fixedly attached to the curved end of the door 3. A negative pressure pipe is fixedly connected to the fixed plate 2 via a flange. The negative pressure pipe is coaxial with the circular plate formed by the fixed plate 2 and the door 3. A drain pipe 13 is also coaxial with the negative pressure pipe.

[0023] The drain valve 14 is fixedly connected to the drain pipe 13 via a flange. The negative pressure pipe includes a lower tube body 9 and an upper tube body 8. The lower tube body 9 is fixedly connected to the fixed plate 2. The upper end of the lower tube body 9 is provided with a lower flange 12, and the lower end of the upper tube body 8 is provided with an upper flange 11. The upper flange 11 is a truncated cone structure with a small top and a large bottom, while the lower flange 12 is a truncated cone structure with a large top and a small bottom. The negative pressure pipe is provided with a control valve 10, and the upper and lower ends of the control valve 10 are respectively fixedly connected to the upper flange 11 and the lower flange 12. The sampling tube 18 is L-shaped, and the lower flange 12 and the lower flange of the control valve 10 are provided with corresponding through holes. The vertical section of the sampling tube 18 is inserted into the through holes and fixedly connected to the lower flange of the control valve 10 via a fixed flange 19. A bracket is provided on the lower side of the box body 1, which includes a support plate 5 and support legs 6 fixedly connected to the four corners of the lower side of the support plate 5. The box body 1 is fixedly connected to the upper side of the support plate 5, and two adjacent support legs 6 are fixedly connected by a connecting rod 7.

[0024] When the hydrochloric acid sampling box of the present invention is used, the liquid inlet valve and the liquid discharge valve 14 are opened to perform the liquid discharge operation to ensure that the sampling is representative. The liquid inlet valve and the liquid discharge valve 14 are closed, the box door 3 is opened, and the sampling bottle is placed in the box body 1. By opening and closing the liquid inlet valve, the sampling bottle is repeatedly cleaned several times, and hydrochloric acid is poured into the box body 1. After the sampling bottle is cleaned, the liquid inlet valve is opened, and the sample enters the sampling bottle. When there is a sufficient amount of hydrochloric acid in the sampling bottle, the liquid inlet valve is closed. The box door 3 is opened and the sampling bottle is taken out. During this process, the negative pressure device is turned on throughout. After sampling, the flushing valve 16 is opened to flush the sample bottle and the inside of the box body 1. The hydrochloric acid sampling box of the present invention has a simple structure, is easy to use, and improves the safety of hydrochloric acid sampling.

[0025] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. Hydrochloric acid sampling box, characterized in that, It includes a box body and a box door hinged on the box body, the box body is provided with a negative pressure tube with one end connected to the inside of the box body and the other end for connecting to the negative pressure equipment, the box body is provided with a drain pipe, the drain pipe is provided with a drain valve, the box body is provided with an injection tube with one end extending into the box body, the injection tube is provided with an injection valve, the box body is provided with a flushing tube with one end extending into the box body, and the flushing tube is provided with a flushing valve.

2. The hydrochloric acid sampling box according to claim 1, characterized in that: The box body is cylindrical with an open upper end, the upper end of the box body is fixedly connected to a fixing plate with a major arc shape, the box door is in a minor arc shape, and the straight end of the box door is hinged to the straight end of the fixing plate through a hinge.

3. The hydrochloric acid sampling box according to claim 2, characterized in that: A handle is fixedly connected to the curved surface end of the box door.

4. The hydrochloric acid sampling box according to claim 2, characterized in that: The negative pressure pipe is fixedly connected to the fixed plate through a flange. The negative pressure pipe is coaxially arranged with the circular plate formed by the fixed plate and the box door. The drain pipe is coaxially arranged with the negative pressure pipe.

5. The hydrochloric acid sampling box according to claim 4, characterized in that: The drain valve is fixedly connected to the drain pipe via a flange.

6. The hydrochloric acid sampling box according to claim 2, characterized in that: The negative pressure pipe includes a lower pipe body and an upper pipe body. The lower pipe body is fixedly connected to a fixed plate. The upper end of the lower pipe body is provided with a lower flange, and the lower end of the upper pipe body is provided with an upper flange. The upper flange is a frustum-shaped structure that is small at the top and large at the bottom, and the lower flange is a frustum-shaped structure that is large at the top and small at the bottom. A control valve is provided on the negative pressure pipe, and the upper and lower ends of the control valve are respectively fixedly connected to the upper flange and the lower flange.

7. The hydrochloric acid sampling box according to claim 6, characterized in that: The sampling tube is L-shaped, and corresponding through holes are provided on the lower flange plate and the lower flange of the control valve. The vertical section of the sampling tube is inserted into the through hole and fixedly connected to the lower flange of the control valve through a fixing flange.

8. The hydrochloric acid sampling box according to claim 1, characterized in that: A bracket is provided on the lower side of the box body, and the bracket includes a support plate and support legs fixedly connected to the four corners of the lower side of the support plate. The box body is fixedly connected to the upper side of the support plate, and two adjacent support legs are fixedly connected by a connecting rod.

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