Hydrofluoric acid storage tank capable of stably feeding liquid

Abstract

The utility model relates to the technical field of storage equipment, in particular to a hydrofluoric acid storage tank capable of feeding liquid stably, which comprises a tank body, a shunting assembly and a buffer assembly, a tank opening is formed at the top of the tank body, the shunting assembly comprises a plurality of dispersion rods which are horizontally arranged, the dispersion rods are fixed in the tank body close to the tank opening, and the buffer assembly is arranged in the tank body. The buffer assembly comprises a buffer disc detachably installed in the tank body, a via hole is formed in the axis of the buffer disc, the buffer disc is arranged on the downstream of the dispersion rod, the buffer disc comprises a guide layer part and a passing layer part which are stacked, a plurality of arc-shaped holes which are evenly distributed in the circumferential direction and provided with chamfered surfaces are formed in the guide layer part, and the passing layer part is provided with a plurality of through holes. A plurality of passing grooves which are distributed in the circumferential direction are formed in the passing layer piece, and upstream hydrofluoric acid enters the passing grooves after being guided by the arc-shaped holes. The technical problem that in the prior art, due to the fact that the conveying speed is too high in the hydrofluoric acid conveying process, conveying safety cannot be guaranteed is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of storage equipment, in particular to a hydrofluoric acid storage tank with stable liquid inlet. Background Art

[0002] Hydrofluoric acid is a strongly corrosive liquid with extremely strong corrosiveness. Its vapor is toxic and can cause chemical burns if inhaled or contacted with the skin. During the production process of photovoltaic solar cells, a large amount of hydrofluoric acid is required, usually stored in ton barrels. However, hydrofluoric acid is a highly toxic substance, and if it diffuses into the workplace, it will seriously affect the production order and endanger personal safety.

[0003] In the prior art, a hydrofluoric acid storage tank is mentioned in the patent number (CN201922366619.5), which includes a tank body and a tank top. The tank body and the tank top are of an integral structure. A liquid level detector, a temperature and humidity integrated detector, and a pressure detector are provided on the tank body. An inlet and an outlet are provided at the lower part of the tank body. A pipeline is provided at the outlet and is connected to the tank top. A first flow control valve and a first solenoid valve are provided at the inlet. The first flow control valve, the first solenoid valve, and the liquid level detector are connected. A second flow control valve and a second solenoid valve are provided at the outlet. The second flow control valve, the second solenoid valve, and the pressure detector are connected. The safety factor of this tank body is relatively high, and it is relatively easy to operate and control.

[0004] In the prior art, a flow control device is added, which effectively solves the problem that hydrofluoric acid is likely to volatilize into the environment, seriously affecting the air quality of the working environment and causing certain damage to personal safety. However, when the transmission speed is too fast during the transmission process, the safety during transmission cannot be effectively guaranteed. At the same time, due to the extremely strong corrosiveness of hydrofluoric acid, conventional stable transmission equipment cannot be used, so a special all-plastic transmission device is required for transportation. Summary of the Invention

[0005] In order to solve the technical problem in the prior art that the transmission safety of hydrofluoric acid cannot be guaranteed due to too fast transmission speed during the transmission process, the present application proposes a hydrofluoric acid storage tank with stable liquid inlet, which solves the above technical problem.

[0006] The technical solution adopted by the utility model to solve its technical problems is as follows:

[0007] The utility model provides a hydrofluoric acid storage tank with stable liquid inlet, comprising: a tank body, at the top of which there is a filling port; a shunt assembly, which includes a plurality of horizontally arranged dispersion rods fixed inside the tank body near the filling port; a buffer assembly, which includes a buffer plate detachably installed inside the tank body. A through hole is formed at the axis center of the buffer plate and is arranged downstream of the dispersion rods. The buffer plate includes a stacked guiding layer and a passing layer. A plurality of arc-shaped holes with chamfered surfaces are formed on the guiding layer and are circumferentially and evenly distributed. A plurality of passing grooves are formed on the passing layer and are circumferentially arranged. The upstream hydrofluoric acid first passes through the arc-shaped holes for guiding and then enters the passing grooves.

[0008] Further, the buffer assembly includes at least two groups. Among them, adjacent buffer plates rotate at an angle on a common axis so that the arc-shaped holes and passing grooves on adjacent buffer plates are staggered.

[0009] Further, a limiting cavity with a reduced inner diameter is formed inside the tank body, and the buffer plate is clamped inside the tank body through the limiting cavity.

[0010] Further, a connecting ring is arranged at the through hole of the buffer plate.

[0011] Further, an expansion cavity with an enlarged outer diameter is formed on the tank body.

[0012] Further, a sealing cover is screwed at the filling port of the tank body. A connecting thread is formed on the outer wall surface of the filling port of the tank body, and the sealing cover is screwed at the filling port by means of the connecting thread.

[0013] Further, a funnel is hung at the filling port of the tank body. The body of the funnel extends into the tank body, and the maximum diameter of the funnel is hung at the end face of the filling port of the tank body.

[0014] Further, the plurality of dispersion rods are arranged at intervals and are parallel to each other.

[0015] Further, all structural parts of the hydrofluoric acid storage tank are made of anti-corrosion plastics.

[0016] Based on the above technical solutions, the technical effects that the utility model can achieve are:

[0017] The hydrofluoric acid storage tank with stable liquid inlet of the present utility model is configured with a flow splitting component and a buffer component in the tank body to buffer hydrofluoric acid. The hydrofluoric acid is first split at the dispersion rod of the flow splitting component, and then the hydrofluoric acid is buffered and decompressed at the arc-shaped holes and passage grooves of the buffer plate of the buffer component. Multiple buffer plates can be provided, so as to buffer and decompress the hydrofluoric acid step by step, effectively solving the problem that the transmission safety cannot be guaranteed due to the too fast transmission speed of hydrofluoric acid during the transmission process. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is the overall structural schematic diagram of the hydrofluoric acid storage tank with stable liquid inlet of the present utility model;

[0019] Figure 2 is the front view of the hydrofluoric acid storage tank with stable liquid inlet of the present utility model;

[0020] Figure 3 is Figure 2 the structural sectional view taken along line A-A of

[0021] Figure 4 is the structural schematic diagram of two buffer plates in an embodiment of the hydrofluoric acid storage tank with stable liquid inlet of the present utility model.

[0022] In the present utility model: 101 - tank body; 102 - expansion cavity; 103 - limiting cavity; 104 - buffer plate; 105 - connecting ring; 106 - arc-shaped hole; 107 - through hole; 108 - chamfered surface; 109 - passage groove; 110 - dispersion rod; 111 - funnel; 112 - connecting thread; 113 - sealing cover. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0023] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and in no way limits the present utility model and its application or use. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0024] Such as Figures 1-4As shown in the figure, in a specific embodiment of the present utility model, it includes a tank body 101, a flow splitting component and two groups of buffer components disposed within the tank body 101. A filling port is formed at the top of the tank body 101, and a sealing cover 113 is screwed at the filling port. A connecting thread 112 is formed on the outer wall surface at the filling port of the tank body 101, and the sealing cover 113 is screwed at the filling port by means of the connecting thread 112. A funnel 111 is hung at the filling port of the tank body 101, and the body of the funnel 111 extends into the interior of the tank body 101. The largest diameter of the funnel 111 is hung at the end face of the filling port of the tank body 101. The flow splitting component includes a plurality of horizontally arranged dispersing rods 110, and the plurality of dispersing rods 110 are arranged at intervals and are parallel to each other. The buffer component includes a buffer plate 104 detachably installed inside the tank body 101. A through hole 107 is opened at the axis of the buffer plate 104 and is arranged downstream of the dispersing rods 110. The buffer plate 104 includes a stacked guiding layer member and a passing layer member. A plurality of arc-shaped holes 106 with chamfered surfaces 108 are formed on the guiding layer member and are circumferentially and uniformly distributed. A plurality of passing grooves 109 are formed on the passing layer member and are circumferentially arranged. The upstream hydrofluoric acid is first guided by the arc-shaped holes 106 and then enters the passing grooves 109. Among them, adjacent buffer plates 104 rotate at an angle on the common axis to make the arc-shaped holes 106 and the passing grooves 109 on the adjacent buffer plates 104 be staggered.

[0025] It can be understood that when the foregoing solution is used to transfer hydrofluoric acid into the tank body 101 for storage, the staff will open the sealing cover 113 from the connecting thread 112, then transfer the hydrofluoric acid into the funnel 111, and the funnel 111 will control the inflow amount in real time. Then, the remaining hydrofluoric acid will be split by the dispersing rods 110, and the split hydrofluoric acid will be buffered and decompressed by the buffer plate 104 of the first buffer component. The hydrofluoric acid will be guided into the passing grooves 109 by the chamfered surfaces 108 of the arc-shaped holes 106, and thus enter the buffer plate 104 of the second buffer component. The buffer plate 104 of the second buffer component will perform secondary buffering and decompression, and the chamfered surfaces 108 of the arc-shaped holes 106 will guide it into the passing grooves 109 and flow into the bottom of the tank body 101. Thus, hierarchical decompression and buffering will be carried out, effectively solving the technical problem in the prior art that the transmission safety of hydrofluoric acid cannot be guaranteed due to the too fast transmission speed during the transmission process.

[0026] Among them, the middle of the tank body 101 is hollow when storing the solution. After the subsequent storage is completed and the liquid is pumped out, the through hole 107 on the middle buffer plate 104 is convenient for the water suction pipe to penetrate.

[0027] Since hydrofluoric acid has extremely strong corrosiveness and conventional stable transmission equipment cannot be used, there is a problem that a special all-plastic transmission device with a special structure is required for transmission. Therefore, all structural components of the hydrofluoric acid storage tank with stable liquid inlet of the present utility model are made of anti-corrosion plastic.

[0028] It can be understood that the funnel 111 is used to control the inflow of hydrofluoric acid, and the dispersion rod 110 can effectively disperse the hydrofluoric acid entering the tank body 101 and also relieve the impact force at the first moment after the hydrofluoric acid enters the tank body 101.

[0029] In a specific embodiment of the present invention, the buffer plate 104 of the second buffer assembly rotates 45 degrees with the buffer plate 104 of the second buffer assembly as the reference and the common axis as the rotation axis, so that the arc holes 106 and the passing grooves 109 of the buffer plates 104 on the two buffer assemblies are staggered, so as to relieve the impact force of the hydrofluoric acid entering the tank body 101 multiple times.

[0030] In order to install the buffer plate 104, a limiting cavity 103 with a reduced inner diameter is formed in the tank body 101. The buffer plate 104 is clamped inside the tank body 101 through the limiting cavity 103. Specifically, the circumferential inner wall of the limiting cavity 103 is clamped with the circumferential outer wall of the buffer plate 104.

[0031] In order to enhance the overall structural stability, a connecting ring 105 is arranged at the through hole 107 of the buffer plate 104. Specifically, the guiding layer and the passing layer stacked by the buffer plate 104 are configured to be detachably connected. The connecting ring 105 is detachably connected to the passing layer for easy installation during production. The connection between the connecting ring 105 and the passing layer can refer to the connection between the locking rotating shaft and the inner core in the prior art.

[0032] In order to increase the overall capacity of the tank body 101 without increasing the floor area, the tank body 101 is formed with an expansion cavity 102 with an enlarged outer diameter. In this embodiment, there are three expansion cavities 102, one is arranged between the diversion assembly and the buffer assembly, one is arranged between the two buffer assemblies, and one is arranged between the buffer assembly and the bottom plate of the tank body 101.

[0033] It should be understood that the specific embodiments described above are only used to explain the present invention and are not used to limit the present invention. The obvious changes or variations derived from the spirit of the present invention are still within the protection scope of the present invention.

Claims

1. A hydrofluoric acid storage tank with stable liquid inlet, characterized in that, Comprising: A tank body (101), at the top of which a filling port is formed; A flow splitting assembly, which includes a plurality of horizontally arranged dispersion rods (110) fixed inside the tank body (101) near the filling port; A buffer assembly, which includes a buffer plate (104) detachably installed inside the tank body (101). A through hole (107) is formed at the axis of the buffer plate (104), and it is arranged downstream of the dispersion rods (110). The buffer plate (104) includes a stacked guiding layer member and a passing layer member. A plurality of arc-shaped holes (106) with chamfered surfaces (108) are formed on the guiding layer member and are circumferentially and uniformly distributed. A plurality of circumferentially arranged passing grooves (109) are formed on the passing layer member. The upstream hydrofluoric acid first passes through the arc-shaped holes (106) for guiding and then enters the passing grooves (109).

2. The hydrofluoric acid storage tank with stable liquid inlet according to claim 1, characterized in that, The buffer assembly includes at least two groups. Among them, adjacent buffer plates (104) rotate at an angle on the common axis so that the arc-shaped holes (106) and passing grooves (109) on adjacent buffer plates (104) are staggered.

3. The hydrofluoric acid storage tank with stable liquid inlet according to claim 1, wherein, A limiting cavity (103) with an inner diameter reduction is formed inside the tank body (101), and the buffer plate (104) is clamped inside the tank body (101) through the limiting cavity (103).

4. The hydrogen fluoride storage tank with stable liquid inlet according to claim 1, characterized in that A connecting ring (105) is arranged at the through hole (107) of the buffer plate (104).

5. The hydrofluoric acid storage tank with stable liquid inlet according to claim 1, characterized in that, The tank body (101) forms an expansion cavity (102) with an outer diameter expansion.

6. The hydrogen fluoride storage tank with stable liquid inlet according to claim 1, wherein A sealing cover (113) is screwed at the filling port of the tank body (101). A connecting thread (112) is formed on the outer wall surface at the filling port of the tank body (101), and the sealing cover (113) is screwed at the filling port by means of the connecting thread (112).

7. The hydrofluoric acid storage tank with stable liquid inlet according to claim 1, characterized in that, A funnel (111) is hung at the filling port of the tank body (101). The body of the funnel (111) extends into the tank body (101), and the largest diameter of the funnel (111) is hung at the end face of the filling port of the tank body (101).

8. The hydrofluoric acid storage tank with stable liquid inlet according to claim 1, wherein The plurality of dispersion rods (110) are arranged at intervals and are parallel to each other.

9. The hydrofluoric acid storage tank with stable liquid inlet according to any one of claims 1-8, characterized in that, All structural components of the hydrofluoric acid storage tank are made of anti-corrosion plastics.

Images