A hydrofluoric acid waste liquid treatment device

Abstract

The utility model relates to the technical field of hydrofluoric acid, and discloses a hydrofluoric acid waste liquid treatment device, including a treatment tank, a liquid inlet pipe, an air outlet, a gas purification component, an air pressure control device, a stirring and cleaning device, wherein the liquid inlet pipe is fixedly connected to the outer wall of the treatment tank, the air outlet is opened on both sides of the upper end of the treatment tank, the gas purification component is arranged on both sides of the treatment tank, and the air pressure control device and the stirring and cleaning device are all arranged inside the treatment tank. The hydrofluoric acid waste liquid treatment device, by arranging the air pressure control device, allows the movable block to slide up and down to control the opening and closing of the air outlet. In cooperation with the purification component, it not only avoids the problem that direct exhaust will cause harm to the human body, but also avoids exhausting too quickly, resulting in insufficient gas purification and causing harmful gas to flow out, thereby improving the safety of the treatment device.

Description

Technical Field

[0001] The utility model relates to the technical field of hydrofluoric acid, in particular to a hydrofluoric acid waste liquid treatment device. Background Art

[0002] Hydrofluoric acid is an aqueous solution of hydrogen fluoride gas. It is a clear, colorless, fuming, corrosive liquid with a strong pungent odor. Hydrofluoric acid is a weak acid that is extremely corrosive and can strongly corrode metals, glass, and silicon-containing objects. Inhaling the vapor or contacting the skin can cause difficult-to-heal burns. In laboratories, fluorite (the main component is calcium fluoride) and concentrated sulfuric acid are generally used to make it. It needs to be sealed in a plastic bottle and stored in a cool place.

[0003] For example, Chinese patent: CN216856679U, the technical solution disclosed in the patent is as follows: a reaction container for treating hydrofluoric acid waste liquid, including a reaction tank 1 for accommodating hydrofluoric acid waste liquid, and also including a container cover 2, a feeding funnel 3, and a stirring device 4, the container cover is detachably connected to the reaction tank, the stirring device is located in the reaction tank for stirring the hydrofluoric acid waste liquid, the feeding funnel is used to add materials that react with the hydrofluoric acid waste liquid and includes a funnel neck and a funnel body, the funnel body is located outside the container cover, the funnel neck passes through the container cover 2 to extend into the reaction tank and the funnel neck has an inclined section arranged obliquely with the container cover, and the reaction tank is also provided with an exhaust hole 11 and a liquid discharge port. The disclosure can reduce the possibility of hydrofluoric acid waste liquid splashing to the outside during the treatment process, and improve the operational safety and convenience of the hydrofluoric acid waste liquid treatment process.

[0004] However, in actual use, hydrogen fluoride gas will be produced during the treatment of hydrofluoric acid waste liquid, which will cause harm to the workers if it is directly discharged. Utility Model Content

[0005] 1. Technical issues to be resolved

[0006] In view of the deficiencies in the prior art, the utility model provides a hydrofluoric acid waste liquid treatment device.

[0007] (II) Technical solution

[0008] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a hydrofluoric acid waste liquid treatment device, comprising a treatment tank, a liquid inlet pipe, an air outlet, a gas purification component, an air pressure control device, and a stirring and cleaning device, wherein the liquid inlet pipe is fixedly connected to the outer wall of the treatment tank, the air outlet is opened on both sides of the upper end of the treatment tank, the gas purification component is arranged on both sides of the treatment tank, and the air pressure control device and the stirring and cleaning device are both arranged inside the treatment tank; the air pressure control device comprises a mounting plate, a motor, a rotating rod, a connecting rod A, a connecting rod B, a movable block, a fixed rod, and a limit block; the mounting plate is fixedly connected to the outer wall of the treatment tank, the motor is fixedly connected to the outer wall of the mounting plate, the rotating rod is fixedly connected to the output end of the motor, and the other end of the rotating rod passes through the treatment tank, one end of the connecting rod A is fixedly connected to the end of the rotating rod away from the motor, the connecting rod B is rotatably connected to the other end of the connecting rod A through a pin shaft, and the movable block is hinged to the other end of the connecting rod B through a hinge seat.

[0009] Preferably, the top of the fixed rod is fixedly connected to the inner top of the processing tank, the limit block is fixedly connected to the bottom of the fixed rod, and the movable block is slidably connected to the outer wall of the fixed rod. By setting the fixed rod and the limit block, the stability of the movable block during sliding can be ensured and it can be prevented from falling off.

[0010] Preferably, the outer wall of the movable block is tightly fitted with the inner wall of the processing tank, and the air outlets are located on both sides of the movable block.

[0011] Preferably, the stirring and cleaning device includes a bevel gear A, which is fixedly sleeved on the outer wall of the rotating rod, and the bevel gear B is meshed with the lower end of the bevel gear A. The bottom of the bevel gear B is fixedly connected to a stirring shaft, and the bottom of the stirring shaft is rotatably connected to the inner bottom end of the treatment tank through a bearing. The outer wall of the stirring shaft is fixedly connected to a stirring rod, and the outer wall of the stirring shaft is fixedly sleeved with a fixing plate, and scrapers are fixedly connected to both sides of the fixing plate.

[0012] Preferably, a collecting frame is provided at the inner bottom end of the processing tank, and a clamping block is fixedly connected to the inner bottom end of the processing tank, and a side of the clamping block close to the collecting frame is tightly fitted with the collecting frame.

[0013] Preferably, the gas purification component comprises a purification box, the purification box is fixedly connected to the outer wall of the processing tank, an activated carbon plate is arranged inside the purification box, and an air outlet pipe is fixedly connected to a side of the purification box away from the purification box.

[0014] (III) Beneficial effects

[0015] Compared with the prior art, the utility model provides a hydrofluoric acid waste liquid treatment device, which has the following beneficial effects:

[0016] 1. This hydrofluoric acid waste liquid treatment device, by setting an air pressure control device, allows the movable block to slide back and forth up and down to control the opening and closing of the air outlet. In cooperation with the purification component, it not only avoids the problem that direct exhaust will cause harm to the human body, but also avoids exhausting too quickly, resulting in insufficient gas purification and causing harmful gas to flow out, thereby improving the safety of the treatment device.

[0017] 2. This hydrofluoric acid waste liquid treatment device is equipped with a stirring and cleaning device. On the one hand, the stirring rod can rotate to fully mix the treatment neutralization liquid and the hydrofluoric acid waste liquid. On the other hand, it can drive the scraper to scrape and clean the waste residue adhered to the inside of the treatment tank, and can collect it through the collection frame. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0019] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0020] Figure 2 This is a front sectional structural schematic diagram of the utility model;

[0021] Figure 3 For this utility model Figure 2 Enlarged structural diagram at A in the middle.

[0022] In the figure: 1. treatment tank; 2. liquid inlet pipe; 3. air outlet; 401. purification box; 402. activated carbon plate; 403. air outlet pipe; 501. mounting plate; 502. motor; 503. rotating rod; 504. connecting rod A; 505. connecting rod B; 506. movable block; 507. fixed rod; 508. limiting block; 601. bevel gear A; 602. bevel gear B; 603. stirring shaft; 604. stirring rod; 605. fixed plate; 606. scraper; 607. collecting frame; 608. block. DETAILED DESCRIPTION

[0023] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0024] Example 1

[0025] like Figure 1-3As shown, the utility model provides a hydrofluoric acid waste liquid treatment device, including a treatment tank 1, a liquid inlet pipe 2, an air outlet 3, a gas purification component, an air pressure control device, and a stirring and cleaning device. The liquid inlet pipe 2 is fixedly connected to the outer wall of the treatment tank 1, the air outlet 3 is opened on both sides of the upper end of the treatment tank 1, the gas purification component is arranged on both sides of the treatment tank 1, and the air pressure control device and the stirring and cleaning device are all arranged inside the treatment tank 1; the air pressure control device includes a mounting plate 501, a motor 502, a rotating rod 503, a connecting rod A504, and a connecting rod B50 5. Movable block 506, fixed rod 507, limit block 508; the mounting plate 501 is fixedly connected to the outer wall of the treatment tank 1, the motor 502 is fixedly connected to the outer wall of the mounting plate 501, the rotating rod 503 is fixedly connected to the output end of the motor 502, and the other end of the rotating rod 503 passes through the treatment tank 1, one end of the connecting rod A504 is fixedly connected to the end of the rotating rod 503 away from the motor 502, the connecting rod B505 is rotatably connected to the other end of the connecting rod A504 through a pin shaft, and the movable block 506 is hinged to the other end of the connecting rod B505 through a hinge seat.

[0026] The top of the fixed rod 507 is fixedly connected to the inner top of the processing tank 1, the limit block 508 is fixedly connected to the bottom of the fixed rod 507, and the movable block 506 is slidably connected to the outer wall of the fixed rod 507. By setting the fixed rod 507 and the limit block 508, the stability of the movable block 506 when sliding can be guaranteed and it can be prevented from falling off.

[0027] The outer wall of the movable block 506 is tightly fitted with the inner wall of the processing tank 1 , and the gas outlets 3 are located on both sides of the movable block 506 .

[0028] The gas purification assembly includes a purification box 401 , which is fixedly connected to the outer wall of the processing tank 1 , an activated carbon plate 402 is arranged inside the purification box 401 , and an air outlet pipe 403 is fixedly connected to the side of the purification box 401 away from the purification box 401 .

[0029] In this embodiment, an air pressure control device is provided so that the movable block 506 slides up and down to control the opening and closing of the air outlet 3. In cooperation with the purification component, it can avoid the problem that direct exhaust will cause harm to the human body, and it can also avoid exhausting too quickly, resulting in insufficient gas purification and the outflow of harmful gases, thereby improving the safety of the treatment device.

[0030] When in use, first, hydrofluoric acid waste liquid and treatment agent enter the interior of the treatment tank 1 through the liquid inlet pipe 2, and hydrogen fluoride gas will be generated during the treatment process. If it is discharged directly, it will cause harm to the staff. Failure to discharge it will cause the gas inside the treatment tank 1 to be too high. At this time, the motor 502 can be started to drive the rotating rod 503 to rotate and then drive one end of the connecting rod A504 to rotate around the rotating rod 503, and then the other end of the connecting rod A504 will drive the movable block 506 to slide up and down on the outside of the fixed rod 507 through the connecting rod B505. After the movable block 506 moves to a certain height, the air outlet 3 will leak out, so that the harmful gas will enter the interior of the purification box 401 and be purified by the activated carbon plate 402 before being discharged from the air outlet pipe 403.

[0031] Example 2

[0032] like Figure 1-3 As shown, on the basis of Example 1, the utility model provides a technical solution: preferably, the stirring and cleaning device includes a bevel gear A601, which is fixedly sleeved on the outer wall of the rotating rod 503, and a bevel gear B602 is meshed with the lower end of the bevel gear A601. The bottom of the bevel gear B602 is fixedly connected with a stirring shaft 603, and the bottom of the stirring shaft 603 is rotatably connected to the inner bottom end of the processing tank 1 through a bearing. The outer wall of the stirring shaft 603 is fixedly connected with a stirring rod 604, and the outer wall of the stirring shaft 603 is fixedly sleeved with a fixing plate 605, and scrapers 606 are fixedly connected on both sides of the fixing plate 605.

[0033] A collecting frame 607 is provided at the inner bottom of the processing tank 1 , and a clamping block 608 is fixedly connected to the inner bottom of the processing tank 1 . The side of the clamping block 608 close to the collecting frame 607 is tightly fitted with the collecting frame 607 .

[0034] In this embodiment, by setting up a stirring and cleaning device, on the one hand, the stirring rod 604 can rotate to fully mix the neutralizing liquid and the hydrofluoric acid waste liquid, and on the other hand, it can drive the scraper 606 to scrape and clean the waste residue adhered to the inside of the processing tank 1, and it can be collected through the collection frame 607.

[0035] When in use, when the rotating rod 503 rotates, it will drive the bevel gear A601 to rotate, and then the bevel gear B602 meshing with it will rotate accordingly, thereby driving the stirring shaft 603 to rotate, and then driving the stirring rod 604 to rotate, so that the treated neutralizing liquid and hydrofluoric acid waste liquid can be fully mixed. At the same time, the fixed plate 605 will rotate along with the stirring shaft 603, and then drive the scraper 606 to scrape and clean the waste residue adhered to the inside of the treatment tank 1, and it can be collected through the collection frame 607.

Claims

1. A hydrofluoric acid waste liquid treatment device, comprising a treatment tank (1), a liquid inlet pipe (2), a gas outlet (3), a gas purification component, a gas pressure control device, a stirring and cleaning device, characterized in that: The liquid inlet pipe (2) is fixedly connected to the outer wall of the processing tank (1), the gas outlet (3) is opened on both sides of the upper end of the processing tank (1), the gas purification component is arranged on both sides of the processing tank (1), and the gas pressure control device and the stirring and cleaning device are arranged inside the processing tank (1); The air pressure control device comprises a mounting plate (501), a motor (502), a rotating rod (503), a connecting rod A (504), a connecting rod B (505), a movable block (506), a fixed rod (507), and a limit block (508); The mounting plate (501) is fixedly connected to the outer wall of the processing tank (1); the motor (502) is fixedly connected to the outer wall of the mounting plate (501); the rotating rod (503) is fixedly connected to the output end of the motor (502), and the other end of the rotating rod (503) passes through the processing tank (1); one end of the connecting rod A (504) is fixedly connected to the end of the rotating rod (503) away from the motor (502); the connecting rod B (505) is rotatably connected to the other end of the connecting rod A (504) via a pin shaft; and the movable block (506) is hinged to the other end of the connecting rod B (505) via a hinge seat.

2. A hydrofluoric acid waste liquid treatment device according to claim 1, characterized in that: The top of the fixed rod (507) is fixedly connected to the inner top of the processing tank (1), the limit block (508) is fixedly connected to the bottom of the fixed rod (507), and the movable block (506) is slidably connected to the outer wall of the fixed rod (507).

3. A hydrofluoric acid waste liquid treatment device according to claim 1, characterized in that: The outer wall of the movable block (506) is tightly fitted to the inner wall of the processing tank (1), and the gas outlet (3) is located on both sides of the movable block (506).

4. A hydrofluoric acid waste liquid treatment device according to claim 1, characterized in that: The stirring and cleaning device comprises a bevel gear A (601) and a bevel gear B (602); the bevel gear A (601) is fixedly sleeved on the outer wall of the rotating rod (503); the bevel gear B (602) is meshed with the lower end of the bevel gear A (601); a stirring shaft (603) is fixedly connected to the bottom of the bevel gear B (602); the bottom of the stirring shaft (603) is rotatably connected to the inner bottom end of the processing tank (1) via a bearing; a stirring rod (604) is fixedly connected to the outer wall of the stirring shaft (603); a fixing plate (605) is fixedly sleeved on the outer wall of the stirring shaft (603); and scrapers (606) are fixedly connected to both sides of the fixing plate (605).

5. A hydrofluoric acid waste liquid treatment device according to claim 1, characterized in that: A collecting frame (607) is provided at the inner bottom end of the processing tank (1), and a clamping block (608) is fixedly connected to the inner bottom end of the processing tank (1), and a side of the clamping block (608) close to the collecting frame (607) is tightly fitted to the collecting frame (607).

6. A hydrofluoric acid waste liquid treatment device according to claim 1, characterized in that: The gas purification component comprises a purification box (401), the purification box (401) being fixedly connected to the outer wall of the processing tank (1), an activated carbon plate (402) being arranged inside the purification box (401), and an air outlet pipe (403) being fixedly connected to a side of the purification box (401) away from the purification box (401).

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