Anhydrous hydrofluoric acid storage device

Abstract

The utility model relates to the field of corrosive liquid storage, in particular to an anhydrous hydrofluoric acid storage device which comprises a storage tank, a liquid inlet is formed in the top of the storage tank, a liquid outlet is formed in the side wall of the storage tank, and a stabilizing structure is arranged on the outer wall of the storage tank. The stabilizing structure comprises a barrel body, a heat preservation cotton layer is fixedly connected to the inner wall of the barrel body, an annular shell is fixedly connected to the inner surface of the heat preservation cotton layer, a cavity is formed in the inner wall of the annular shell, a liquid inlet pipe is fixedly connected to the inner wall of the annular shell, and a circulating refrigeration water machine is fixedly connected to a port of the liquid inlet pipe. A storage assembly is arranged on the surface of the can body, and a reminding assembly is arranged on the surface of the can body. According to the anhydrous hydrofluoric acid storage tank, the stabilizing structure is arranged, so that the sealing degree of the storage tank is guaranteed, meanwhile, an operator is reminded, the risk of overflow caused by misoperation of filling anhydrous hydrofluoric acid is avoided, and the storage stability of the anhydrous hydrofluoric acid is improved.

Description

Technical Field

[0001] This utility model relates to the field of corrosive liquid storage, and more particularly to an anhydrous hydrofluoric acid storage device. Background Technology

[0002] Anhydrous hydrofluoric acid is a colorless, fuming liquid, primarily composed of hydrogen fluoride, with a concentration typically above 99%. It possesses a high dielectric constant, low viscosity, and a wide liquid range, making it an excellent solvent. Anhydrous hydrofluoric acid has an acidity comparable to anhydrous sulfuric acid, classifying it as a strong acid. It has wide applications in many fields, primarily in the production of fluorinated resins, fluoride salts, organofluorine compounds, elemental fluorine, and Freon refrigerants. As a hazardous chemical, anhydrous hydrofluoric acid requires strict safety measures for storage to prevent leaks, fires, or other accidents. Because it is hygroscopic and readily reacts with moisture in the air, proper storage prevents moisture absorption, decomposition, or deterioration, thus maintaining product quality.

[0003] A search revealed a Chinese patent announcement number: CN221478331U, which discloses an anhydrous hydrofluoric acid storage device. The flexible membrane has a sealing airbag connected to its edge, which can slide in contact with the inner wall of the storage tank and also serve as a seal. By setting a counterweight and connecting it to a floating top via a lifting rope, the changes in the internal liquid level can be directly observed from the outside of the storage tank, making liquid level observation more convenient.

[0004] In the above technical solution, a sealed airbag, along with a counterweight and a lifting rope, is used to observe changes in the liquid level inside the storage tank. However, long-term chemical corrosion and physical wear may accelerate the aging process of the airbag, affecting its sealing performance. The airbag may need to be inspected and replaced regularly, which may be difficult to achieve inside the storage tank, especially when the airbag needs to operate in an environment filled with hydrofluoric acid. This makes it impossible for the storage tank to guarantee the degree of sealing while alerting external operators whether the liquid level inside the storage tank has reached the filling limit, reducing the stability of anhydrous hydrofluoric acid storage. Therefore, an anhydrous hydrofluoric acid storage device is proposed to solve the above problems. Utility Model Content

[0005] To overcome the above deficiencies, this utility model provides an anhydrous hydrofluoric acid storage device, which aims to improve the problem in the prior art that anhydrous hydrofluoric acid storage devices cannot simultaneously guarantee the storage seal and remind external operators based on the increase of liquid level while filling anhydrous hydrofluoric acid.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: an anhydrous hydrofluoric acid storage device, comprising a storage tank, an inlet at the top of the storage tank, an outlet on the side wall of the storage tank, a stabilizing structure on the outer wall of the storage tank, the stabilizing structure comprising a barrel body, an insulating cotton layer fixedly connected to the inner wall of the barrel body, an annular shell fixedly connected to the inner surface of the insulating cotton layer, a cavity opened in the inner wall of the annular shell, an inlet pipe fixedly connected to the inner wall of the annular shell, a circulating chiller fixedly connected to the port of the inlet pipe, a storage component on the surface of the barrel body, and a reminder component on the surface of the barrel body.

[0007] As a further description of the above technical solution:

[0008] The surface of the liquid inlet pipe is provided with a fixing ring, and the inner wall of the fixing ring is threaded with a threaded ring.

[0009] As a further description of the above technical solution:

[0010] The bottom of the storage tank is fixedly connected to the inner wall of the barrel.

[0011] As a further description of the above technical solution:

[0012] The storage component includes a through hole, and a float is disposed inside the storage tank. A connecting rod is fixedly connected to the top of the float, and a movable block is fixedly connected to the end of the connecting rod. A fixed frame is slidably connected to the outer wall of the movable block.

[0013] As a further description of the above technical solution:

[0014] The reminder component includes a pressure plate, an avoidance groove is provided on the inner wall of the barrel, a push switch is fixedly connected to the inner wall of the avoidance groove, and a buzzer is fixedly connected to the top of the barrel.

[0015] As a further description of the above technical solution:

[0016] The through hole is formed on the upper surface of the storage tank and is fitted onto the outer wall of the connecting rod.

[0017] As a further description of the above technical solution:

[0018] The top end of the fixing frame is fixedly connected to the inner wall of the barrel, and the bottom end of the fixing frame is fixedly connected to the upper surface of the storage tank.

[0019] As a further description of the above technical solution:

[0020] The end of the inlet pipe near the annular shell extends into the cavity.

[0021] This utility model has the following beneficial effects:

[0022] 1. In this utility model, by setting up a circulating chiller, liquid inlet pipe, cavity, annular shell and heat insulation cotton layer, the barrel provides a relatively cool environment for the storage tank. The storage component and the reminder component ensure the sealing of the storage tank while providing reminders to the operator, avoiding the risk of overflow due to improper operation when filling anhydrous hydrofluoric acid, and improving the stability of anhydrous hydrofluoric acid storage.

[0023] 2. In this utility model, the connecting pipe can be disassembled or combined by the cooperation of the fixing ring and the threaded ring, which facilitates the sequential transportation of the tank and the circulating chiller when they need to be moved, thereby improving the convenience of transporting the storage environment. Attached Figure Description

[0024] Figure 1 This is a right-side view of a partial cross-sectional view of the main body of this utility model.

[0025] Figure 2 This is a left-side view of a partial cross-sectional section of the main body of this utility model.

[0026] Figure 3 For the present utility model Figure 2 Enlarged schematic diagram of region A in the middle.

[0027] Figure 4 This is a bottom view of a partial cross-sectional view of the main body of this utility model.

[0028] Legend:

[0029] 1. Storage tank; 2. Liquid inlet; 3. Liquid outlet; 4. Tank body; 5. Insulation layer; 6. Annular shell; 7. Cavity; 8. Liquid inlet pipe; 9. Circulating chiller; 10. Through hole; 11. Float; 12. Connecting rod; 13. Fixing frame; 14. Moving block; 15. Pressure plate; 16. Clearance groove; 17. Push switch; 18. Buzzer; 19. Fixing ring; 20. Threaded ring. Detailed Implementation

[0030] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0031] Reference Figures 1-3This utility model provides an embodiment of an anhydrous hydrofluoric acid storage device, including a storage tank 1. The top of the storage tank 1 is provided with a liquid inlet 2, which connects the tank body 4 to the storage tank 1. An external sealing cap is provided on the top of the liquid inlet 2 to seal the liquid inlet 2. An outlet 3 is provided on the side wall of the storage tank 1. A stabilizing structure is provided on the outer wall of the storage tank 1, including a tank body 4. An insulation layer 5 is fixedly connected to the inner wall of the tank body 4. An annular shell 6 is fixedly connected to the inner surface of the insulation layer 5. A cavity 7 is formed in the inner wall of the annular shell 6, which facilitates the containment of coolant. An inlet pipe 8 is fixedly connected to the inner wall of the annular shell 6. The inlet pipe 8 is divided into two parts, connected to the annular shell 6 and a circulating chiller 9, respectively. The port of the inlet pipe 8 is fixedly connected to the circulating chiller 9, which can cool the coolant and circulate it into the cavity 7. Storage components and reminder components are provided on the surface of the tank body 4.

[0032] Reference Figures 2-4 The bottom of storage tank 1 is fixedly connected to the inner wall of barrel 4. The storage component includes a through hole 10, which is opened on the upper surface of storage tank 1. A float 11 is installed inside storage tank 1. A connecting rod 12 is fixedly connected to the top of float 11. The through hole 10 is sleeved on the outer wall of connecting rod 12. A movable block 14 is fixedly connected to the end of connecting rod 12. The connecting rod 12 and movable block 14 can be made of lightweight material and can rise and fall according to the displacement of float 11. A fixing frame 13 is slidably connected to the outer wall of movable block 14. The bottom end of fixing frame 13 is fixedly connected to the upper surface of storage tank 1, and the top end of fixing frame 13 is fixedly connected to the inner wall of barrel 4. The storage component includes a pressure plate 15. 15 can press the switch end of the push switch 17. The inner wall of the barrel 4 is provided with a relief groove 16, which reduces the area occupied by the push switch 17 inside the barrel 4. The push switch 17 is fixedly connected to the inner wall of the relief groove 16. The top of the barrel 4 is fixedly connected to a buzzer 18. The buzzer 18 is controlled by the push switch 17. When the push switch 17 is subjected to external force, the buzzer 18 starts to sound. When the push switch 17 is not subjected to external force, the buzzer 18 is in the off state. At the same time, the buzzer 18 is provided with a start button. When the buzzer 18 is started, the push switch 17 can control the buzzer 18. The end of the liquid inlet pipe 8 near the annular shell 6 passes through the cavity 7.

[0033] Reference Figure 2 and Figure 4A fixing ring 19 is provided on the surface of the liquid inlet pipe 8. A threaded ring 20 is threadedly connected to the inner wall of the fixing ring 19. The end of the threaded ring 20 away from the fixing ring 19 is rotatably connected to the outer wall of the end of the liquid inlet pipe 8 near the circulating chiller 9. The end of the fixing ring 19 away from the threaded ring 20 is rotatably connected to the outer wall of the end of the liquid inlet pipe 8 near the annular housing 6. The liquid inlet pipe 8 can be disassembled or combined through the fixing ring 19 and the threaded ring 20.

[0034] Working principle: When anhydrous hydrofluoric acid is poured into storage tank 1, it is poured in through inlet 2. The level of anhydrous hydrofluoric acid gradually rises until it contacts float 11. Float 11 moves with the rising level, thereby driving moving block 14 to slide within fixed frame 13 via connecting rod 12. Pressure plate 15 moves simultaneously until it rises and contacts push switch 17. When push switch 17 is pressed, buzzer 18 receives the signal and begins to sound. At this time, float 11 is fully embedded in the lower end of through hole 10, blocking through hole 10 and reminding the operator to stop pouring anhydrous hydrofluoric acid. Seal the inlet 2, turn off the start button of the buzzer 18, insert the threaded ring 20 into the fixing ring 19 and rotate it clockwise until the two are connected, so that the two inlet pipes 8 are combined. The circulating chiller 9 starts and transmits the cooled liquid through the inlet pipe 8 to the inside of the cavity 7. The surface of the annular shell 6 will be affected by the coolant, and the temperature will gradually decrease. The insulation cotton layer 5 prevents the external heat from causing the annular shell 6 to conduct heat to the storage tank 1, so that the anhydrous hydrofluoric acid is stored in the storage tank 1 at a suitable temperature, thereby improving the storage stability of anhydrous hydrofluoric acid.

[0035] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. An anhydrous hydrofluoric acid storage device, comprising a storage tank (1), wherein the top of the storage tank (1) is provided with a liquid inlet (2) and the side wall of the storage tank (1) is provided with a liquid outlet (3), characterized in that: The outer wall of the storage tank (1) is provided with a stabilizing structure, which includes a barrel body (4). The inner wall of the barrel body (4) is fixedly connected with a heat insulation cotton layer (5). The inner surface of the heat insulation cotton layer (5) is fixedly connected with an annular shell (6). The inner wall of the annular shell (6) is provided with a cavity (7). The inner wall of the annular shell (6) is fixedly connected with a liquid inlet pipe (8). The port of the liquid inlet pipe (8) is fixedly connected with a circulating chiller (9). The surface of the barrel body (4) is provided with a storage component and a reminder component.

2. The anhydrous hydrofluoric acid storage device according to claim 1, characterized in that: The surface of the liquid inlet pipe (8) is provided with a fixing ring (19), and the inner wall of the fixing ring (19) is threaded with a threaded ring (20).

3. The anhydrous hydrofluoric acid storage device according to claim 1, characterized in that: The bottom of the storage tank (1) is fixedly connected to the inner wall of the barrel (4).

4. The anhydrous hydrofluoric acid storage device according to claim 1, characterized in that: The storage component includes a through hole (10), and a float (11) is provided inside the storage tank (1). A connecting rod (12) is fixedly connected to the top of the float (11), and a moving block (14) is fixedly connected to the end of the connecting rod (12). A fixing frame (13) is slidably connected to the outer wall of the moving block (14).

5. The anhydrous hydrofluoric acid storage device according to claim 1, characterized in that: The reminder component includes a pressure plate (15), an avoidance groove (16) is provided on the inner wall of the barrel (4), a push switch (17) is fixedly connected to the inner wall of the avoidance groove (16), and a buzzer (18) is fixedly connected to the top of the barrel (4).

6. The anhydrous hydrofluoric acid storage device according to claim 4, characterized in that: The through hole (10) is opened on the upper surface of the storage tank (1) and the through hole (10) is sleeved on the outer wall of the connecting rod (12).

7. The anhydrous hydrofluoric acid storage device according to claim 4, characterized in that: The top end of the fixing frame (13) is fixedly connected to the inner wall of the barrel (4), and the bottom end of the fixing frame (13) is fixedly connected to the upper surface of the storage tank (1).

8. The anhydrous hydrofluoric acid storage device according to claim 1, characterized in that: The end of the liquid inlet pipe (8) near the annular shell (6) extends into the cavity (7).

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