Hydrochloric acid storage tank

Abstract

The invention provides a hydrochloric acid storage tank, and belongs to the technical field of storage devices, the hydrochloric acid storage tank comprises a cylindrical upper storage tank and a cylindrical lower storage tank, a feeding ring opening is formed in the upper storage tank, a discharging ring opening is formed in the lower storage tank, an exhaust assembly is arranged at the feeding ring opening, and a cylindrical air bag is mounted at the splicing position of the upper storage tank and the lower storage tank; an air bag infusion tube is arranged on the cylindrical air bag, the air bag infusion tube is used for conveying hydrochloric acid liquid from the feeding ring opening to the bottom of the lower storage tank, the cylindrical air bag and the air bag infusion tube are coaxially arranged, an air bag liquid outlet communicated with the air bag infusion tube is formed in the cylindrical air bag, and a wrinkle opening is formed in the middle of the air bag infusion tube. Hydrochloric acid can be directly conveyed to the bottom of the lower storage tank through the flexible air bag infusion tube, hydrochloric acid splashing is prevented, contact between the surface of hydrochloric acid and gas can be reduced through the cylindrical air bag, and the volatilization amount of hydrochloric acid is reduced.

Description

Technical Field

[0001] The present application relates to the technical field of storage devices, and in particular to a hydrochloric acid storage tank. Background Art

[0002] Hydrochloric acid is a mixture of hydrochloric acid and nitric acid. Its chemical name is hydrogen chloride aqueous solution. It is a colorless and transparent liquid with a strong pungent odor and high corrosiveness. Hydrochloric acid is generally placed in a hydrochloric acid storage tank. Concentrated hydrochloric acid is extremely volatile. When the container of concentrated hydrochloric acid is opened, the hydrogen chloride gas will evaporate and combine with water vapor in the air to produce small droplets of hydrochloric acid, forming acid mist. In production and life, hydrochloric acid is used in many aspects, such as pickling steel, household cleaning liquid, gelatin production, descaling reagents, leather processing, etc.

[0003] Referring to the Chinese patent document with the announcement number CN109160041B and the name of a hydrochloric acid storage tank, the storage tank includes a storage tank, gas storage chambers are symmetrically arranged on both sides of the liquid inlet of the storage tank, the gas storage chambers are used to store the gas in the storage tank, buffer bags are symmetrically arranged on the side walls of the liquid inlet, the buffer bags are used to buffer the hydrochloric acid in the liquid inlet, air bags are arranged at intervals in the buffer bags, a spiral plastic tube is arranged in the storage tank, the plastic tube is used to transport the hydrochloric acid at the feeding ring to the bottom of the storage tank, and a group of exhaust units are arranged on the inner wall of the storage tank. When in use, the hydrochloric acid liquid is aligned with the liquid inlet, the hydrochloric acid contacts the buffer belt and squeezes the air bags arranged on both sides of the buffer belt, the hydrochloric acid enters the bottom of the storage tank along the buffer belt and the plastic tube, and when the hydrochloric acid enters the storage tank, the gas on the upper part of the storage tank is discharged from the exhaust unit, the buffer bag and the air bag are arranged to prevent the splash of hydrochloric acid while making the liquid inlet of the buffer bag larger and speeding up the speed of hydrochloric acid entering the storage tank, preventing the splash of hydrochloric acid, protecting the safe working environment of the staff, and also avoiding the volatilization of the hydrochloric acid solution.

[0004] Referring to the above technical solution, when hydrochloric acid enters the storage tank, the amount of hydrochloric acid entering the storage tank is proportional to the discharged gas. When the hydrochloric acid enters the bottom of the storage tank, the hydrochloric acid easily contacts the gas at the bottom of the storage tank. When the hydrochloric acid is stationary in the storage tank, the liquid on the surface of the hydrochloric acid is still in contact with the surface of the gas. The contact between the hydrochloric acid and the gas easily leads to the volatilization of the hydrochloric acid. Summary of the invention

[0005] In view of this, the present application provides a hydrochloric acid storage tank, which is mainly used to reduce the contact between hydrochloric acid and gas.

[0006] In order to solve the above technical problems, the present application provides a hydrochloric acid storage tank, comprising a cylindrical upper storage tank and a lower storage tank, the upper storage tank is provided with a feed ring, the lower storage tank is provided with a discharge ring, the feed ring is provided with an exhaust assembly, a cylindrical air bag is installed at the joint of the upper storage tank and the lower storage tank, the cylindrical air bag is provided with an air bag infusion tube, the air bag infusion tube is used to transport hydrochloric acid liquid from the feed ring to the bottom of the lower storage tank, the cylindrical air bag and the air bag infusion tube are coaxially arranged, the cylindrical air bag is provided with an air bag outlet connected to the air bag infusion tube, and a pleated opening is provided in the middle of the air bag infusion tube.

[0007] By adopting the above technical scheme, the hydrochloric acid at the feed ring can directly reach the bottom of the lower storage tank through the airbag infusion tube, which can prevent the hydrochloric acid from splashing. The cylindrical airbag can reduce the contact between the hydrochloric acid and the gas, prevent the hydrochloric acid from contacting with too much gas, and reduce the volatilization of the hydrochloric acid. While the hydrochloric acid inside the lower storage tank is constantly increasing, the cylindrical airbag folds upward to ensure that the lower storage tank can carry the hydrochloric acid. The exhaust component can discharge the gas from the inside of the upper storage tank to keep the amount of discharged gas balanced with the amount of hydrochloric acid entering.

[0008] Optionally, two semicircular clamping rings are arranged on the feed ring opening, flanges are threadedly connected to the semicircular clamping rings, and the flanges, semicircular clamping rings and the feed ring opening are coaxially arranged.

[0009] By adopting the above technical solution, the flange facilitates the device to be connected with other components.

[0010] Optionally, the exhaust assembly includes an exhaust hollow column arranged on a semicircular clamp ring, and each semicircular clamp ring is provided with two exhaust hollow columns and symmetrically arranged, and the exhaust hollow columns penetrate the inner and outer side walls of the clamp and are penetrated on the feed port.

[0011] Optionally, two groups of symmetrical exhaust hollow columns are rotatably connected to a rotating shaft, a connecting plate is fixedly mounted on the rotating shaft, a reset spring is arranged between the connecting plate and the feed ring, and a splint for clamping the airbag infusion tube is fixedly mounted on the rotating shaft.

[0012] By adopting the above technical solution, the reset spring can drive the clamps on both sides to clamp the airbag infusion tube under the action of elastic force, so that the airbag infusion tube is flat, which can prevent excessive air from entering the airbag infusion tube and contacting hydrochloric acid.

[0013] Optionally, the exhaust component further includes an exhaust valve disposed on the rotating shaft and exhaust holes disposed on the exhaust hollow columns, wherein the exhaust holes are disposed on three of the exhaust hollow columns.

[0014] By adopting the above technical solution, while hydrochloric acid continues to flow through the balloon infusion tube, the balloon infusion tube clamped by two clamps can be transformed from a flat shape to a circular ring shape, which can drive the rotating shaft to rotate so that the exhaust valve corresponds to the exhaust hole. While the hydrochloric acid enters the lower storage tank, the exhaust valve can extract the gas in the upper storage tank and discharge it from the exhaust hole.

[0015] Optionally, an air inlet hole is provided on the exhaust hollow column, the air inlet hole is provided on one of the exhaust hollow columns, and an air inlet valve is provided on the exhaust hollow column.

[0016] By adopting the above technical solution, when hydrochloric acid is discharged, the air intake valve corresponds to the air intake hole, and the air intake valve draws external gas into the upper storage tank through the air intake hole, which can ensure that the discharge amount of hydrochloric acid and the intake amount of gas remain balanced.

[0017] Optionally, a twist cover is provided on the discharge ring opening, a telescopic spring is installed on the twist cover, and a piston is provided on the telescopic spring.

[0018] By adopting the above technical solution, the telescopic spring can drive the piston to contact the inner wall of the discharge ring, thereby enhancing the sealing performance of the discharge ring.

[0019] Optionally, the airbag infusion tube is connected to an airbag liquid inlet located at a feed ring opening, and a compression ring is installed on the feed ring opening to fix the airbag liquid inlet opening.

[0020] By adopting the above technical solution, the compression ring can be used to press and fix the airbag liquid inlet, and at the same time, it is convenient to disassemble and install under the connection of the flange and the semicircular clamping ring.

[0021] Optionally, a connecting thread is provided on the inner wall of the compression ring.

[0022] By adopting the above technical solution, the connecting thread facilitates the connection of the device with other components.

[0023] In summary, compared with the prior art, the present application includes at least one of the following beneficial technical effects: 1. By setting up the hose, hydrochloric acid can directly enter the bottom of the storage tank, reducing the splashing of hydrochloric acid during the flow process, preventing gas disturbance from accelerating the volatilization of hydrochloric acid, and by setting up a cylindrical flexible air bag, it can prevent the surface of hydrochloric acid inside the storage tank from excessive contact with the gas, reducing the problem of excessive volatilization of hydrochloric acid due to excessive contact with the gas.

[0024] 2. Through the flexible principle of the flexible tube, the flexible tube can be in a flat or straight shape under different liquid inlet and outlet conditions, which not only ensures the liquid inlet speed during liquid inlet, but also prevents excessive contact between gas and the liquid in the storage tank through the flexible tube when the liquid inlet is stopped.

[0025] 3. By setting the air inlet and air outlet, the liquid inlet and air outlet, as well as the liquid outlet and air inlet can be balanced to complete the storage or discharge of hydrochloric acid. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 This is a schematic diagram of the structure of the hydrochloric acid storage tank for this application; Figure 2 A cross-sectional view of the storage tank for this application; Figure 3 For this application Figure 2 Middle A is a schematic diagram of a partially enlarged structure; Figure 4 For this application Figure 2 Middle B is a schematic diagram of a partially enlarged structure; Figure 5 For this application Figure 2 Middle C is a schematic diagram of the partially enlarged structure; Figure 6 This is a schematic diagram of the structure of the cylindrical airbag of the present application; Figure 7 Exploded view of the semicircular clamp ring, flange and compression ring for this application; Figure 8 For this application Figure 2 Schematic diagram of the assembly structure of the middle semicircular splint ring; Fig. 9 This is a schematic diagram of the structure of the clamping assembly of this application; Fig.10 This is a cross-sectional view of the twist cover of this application.

[0027] Explanation of the accompanying drawings: 1. Storage tank; 11. Upper storage tank; 12. Lower storage tank; 13. Feed ring; 14. Discharge ring; 2. Volatility reduction component; 21. Cylindrical airbag; 22. Airbag infusion tube; 23. Airbag liquid outlet; 24. Pleated mouth; 25. Airbag liquid inlet; 26. Flexible liquid outlet valve; 3. Disassembly component; 31. Semicircular clamp ring; 32. Flange; 33. Compression ring; 34. Connecting thread; 4. Exhaust component; 41. Exhaust hollow column; 42. Rotating shaft; 43. Exhaust valve; 44. Exhaust hole; 45. Air inlet; 46. Air inlet valve; 5. Clamping component; 51. Connecting plate; 52. Reset spring; 53. Clamp; 6. Twist cover; 61. Telescopic spring; 62. Piston. DETAILED DESCRIPTION

[0028] In order to make the purpose, technical solutions and advantages of the embodiments of the present application clearer, the following will be combined with the embodiments of the present application. Figure 1-Figure 10, the technical scheme of the embodiment of the present application is clearly and completely described. Obviously, the described embodiment is a part of the embodiment of the present application, not all of the embodiments. Based on the described embodiment of the present application, all other embodiments obtained by ordinary technicians in this field belong to the scope of protection of this application.

[0029] Reference Figure 1 , Figure 2 , Figure 7 and Figure 8 The present embodiment provides a hydrochloric acid storage tank, comprising a storage tank 1, a volatility reduction component 2, a disassembly component 3 and an exhaust component 4. The volatility reduction component 2 and the exhaust component 4 are both arranged inside the storage tank 1, the volatility reduction component 2 is mainly used to reduce the volatility of hydrochloric acid, and the exhaust component 4 is used to control the inlet and outlet of gas inside the storage tank 1 to ensure that the inlet and outlet of gas is balanced with the inlet and outlet of hydrochloric acid. The storage tank 1 is provided with a disassembly component 3, which facilitates the connection of the storage tank 1 with other components.

[0030] Reference Figure 1 , Figure 3 and Figure 4 The storage tank 1 is composed of an upper storage tank 11 and a lower storage tank 12. The upper storage tank 11 is provided with a feed ring opening 13, and the lower storage tank 12 is provided with a discharge ring opening 14. The upper storage tank 11 and the lower storage tank 12 are arranged in cylindrical shapes of equal size, and the opening of the upper storage tank 11 faces downward, and the opening of the lower storage tank 12 faces upward. The top of the upper storage tank 11 is provided with a feed ring opening 13, and the bottom of the lower storage tank 12 is provided with a discharge ring opening 14. The upper storage tank 11, the lower storage tank 12, the feed ring opening 13 and the discharge ring opening 14 are arranged coaxially.

[0031] Reference Figure 2 , Figure 5 and Figure 7 The volatility reduction component 2 includes a cylindrical air bag 21 , an air bag infusion tube 22 , an air bag liquid outlet 23 , and a pleated opening 24 . The edge of the cylindrical airbag 21 is folded at the connection between the upper storage tank 11 and the lower storage tank 12. The cylindrical airbag 21 and the lower storage tank 12 are coaxially arranged and fit on the inner wall of the lower storage tank 12. The cylindrical airbag 21 is used to prevent the hydrochloric acid entering the lower storage tank 12 from shaking too much and reduce the contact between the hydrochloric acid and the gas. The cylindrical airbag 21 is connected with an airbag infusion tube 22 for transporting the hydrochloric acid from the feed ring 13 to the bottom of the lower storage tank 12. The airbag infusion tube 22 and the cylindrical airbag 21 are coaxially arranged. An airbag liquid outlet 23 is connected between the airbag infusion tube 22 and the cylindrical airbag 21. A folded opening 24 is arranged in the middle of the airbag infusion tube 22. The folded opening 24 can make the airbag infusion tube 22 fold along the folded opening 24, so that the lower half of the airbag infusion tube 22 is sleeved on the airbag infusion tube 22 located in the upper half.

[0032] Reference Figure 4 and Figure 6 The volatility reduction component 2 also includes an airbag liquid inlet 25 and a flexible liquid outlet valve 26. The airbag liquid inlet 25 is connected to the top of the airbag infusion tube 22 and is located at the feed ring 13. The flexible liquid outlet valve 26 is installed at the discharge ring 14 to assist the hydrochloric acid to flow out of the lower storage tank 12.

[0033] When in use, hydrochloric acid is first introduced from the feed ring 13, and then from the airbag liquid inlet 25 and directly reaches the bottom of the lower storage tank 12 along the airbag infusion tube 22. The cylindrical airbag 21 limits the hydrochloric acid to prevent it from splashing. As the hydrochloric acid liquid level rises, the cylindrical airbag 21 will move upward. Synchronously, the airbag infusion tube 22 at the bottom will be folded upward along the pleated opening 24, so that the airbag infusion tube 22 in the lower half is sleeved on the airbag infusion tube 22 in the upper half. When the bottom of the cylindrical airbag 21 is level with the pleated opening 24 in the middle, the cylindrical airbag 21 will be folded onto the upper storage tank 11 and overlap with the inner wall of the upper storage tank 11 until the upper storage tank 11 and the lower storage tank 12 are filled.

[0034] Reference Figure 7 The disassembly assembly 3 includes a semicircular clamp ring 31, a flange 32, a compression ring 33 and a connecting thread 34. The semicircular clamp ring 31 is configured as two semicircular rings of equal size, which are sleeved on the outer wall of the feed ring opening 13. The top of the semicircular clamp ring 31 is threadedly connected with a flange 32, and a hole is provided on the flange 32. A compression ring 33 is installed on the feed ring opening 13 to fix the airbag liquid inlet 25. A clamping opening is provided on the plane of the compression ring 33, which is clamped on the feed ring opening 13, and the outer wall of the compression ring 33 abuts against the inner wall of the flange 32.

[0035] When in use, the compression ring 33 is clamped on the feed ring 13 so that the compression ring 33 presses the edge of the airbag liquid inlet 25, and the two semicircular clamp rings 31 are surrounded on the outer wall of the feed ring 13 and are threadedly connected using a flange 32. The flange 32 fixes the semicircular clamp ring 31 and the compression ring 33. The holes on the flange 32 can be connected to other external parts through connectors. The connecting thread 34 on the compression ring 33 can be connected to other external parts through a threaded connection. At the same time, the compression ring 33 presses the airbag liquid inlet 25. The airbag liquid inlet 25, the airbag infusion tube 22 and the cylindrical airbag 21 can be replaced by disassembling the semicircular clamp ring 31, the flange 32, the compression ring 33, the upper storage tank 11 and the lower storage tank 12.

[0036] Reference Figure 7 , Figure 8 and Fig. 9The exhaust assembly 4 includes an exhaust hollow column 41, a rotating shaft 42, an exhaust valve 43, an exhaust hole 44, an air inlet hole 45 and an air inlet valve 46. The exhaust hollow column 41 is fixedly mounted on the semicircular clamping plate ring 31, and each semicircular clamping plate ring 31 is provided with two exhaust hollow columns 41, and the two exhaust hollow columns 41 are symmetrically arranged. The two semicircular clamping plate rings 31 are provided with rotating shafts 42 coaxial with the exhaust hollow columns 41. The exhaust hollow columns 41 penetrate the inner and outer side walls of the clamping plate 53 and are penetrated on the feed ring opening 13. Among them, three exhaust hollow columns 41 are provided with exhaust holes 44, and three exhaust valves 43 acting on the exhaust holes 44 are installed on the two rotating shafts 42. The remaining exhaust hollow column 41 is provided with an air inlet hole 45 and an air inlet valve 46, and the rotating shaft 42 is provided with a hole corresponding to the air inlet hole 45.

[0037] Reference Fig. 9 The clamping assembly 5 includes a connecting plate 51, a return spring 52 and a clamping plate 53. The clamping plate 53 is fixedly mounted on the rotating shaft 42. The two clamping plates 53 are used to clamp the airbag infusion tube 22. The connecting plate 51 is fixedly mounted on the rotating shaft 42. The connecting plate 51 and the clamping plate 53 are symmetrically mounted. The return spring 52 is fixedly mounted between the connecting plate 51 and the feeding ring 13.

[0038] When in use, the airbag infusion tube 22 is in a flat shape under the elastic force of the return spring 52 and the clamping of the splint 53. When hydrochloric acid enters the lower storage tank 12 and the upper storage tank 11, the hydrochloric acid continues to pass through the airbag infusion tube 22, and the airbag infusion tube 22 is stretched open, driving the rotating shaft 42 to rotate, so that the exhaust valve 43 on the rotating shaft 42 corresponds to the exhaust hole 44 on the exhaust hollow column 41, and the exhaust valve 43 exhausts the gas inside the upper storage tank 11 from the exhaust hole 44 and the exhaust hollow column 41 in turn; when the lower storage tank 12 and the upper storage tank 11 are in the state of being closed, the airbag infusion tube 22 is opened and the rotating shaft 42 is driven to rotate, so that the exhaust valve 43 on the rotating shaft 42 corresponds to the exhaust hole 44 on the exhaust hollow column 41, and the exhaust valve 43 exhausts the gas inside the upper storage tank 11 from the exhaust hole 44 and the exhaust hollow column 41 in turn; When the hydrochloric acid in 12 is discharged from the discharge ring 14, the air bag infusion tube 22 is flattened under the clamping of the clamp plate 53, and the hole on the rotating shaft 42 corresponds to the exhaust hole 44 provided on the exhaust hollow column 41. At this time, the air inlet valve 46 is started to allow the same amount of gas to enter the upper storage tank 11. Under the action of air pressure, the cylindrical air bag 21 can reciprocate between the upper storage tank 11 and the lower storage tank 12, so that the plane of the cylindrical air bag 21 is always in contact with the surface of the hydrochloric acid, preventing excessive contact between the hydrochloric acid and the gas.

[0039] Reference Fig.10 The discharge ring opening 14 is provided with a twist cover 6, and a telescopic spring 61 and a piston 62 are installed on the twist cover 6. The two ends of the telescopic spring 61 are fixedly connected to the twist cover 6 and the piston 62 respectively. When the twist cover 6 is closed, the piston 62 abuts against the inner wall of the discharge ring opening 14, which can further ensure the sealing of the discharge ring opening 14.

[0040] The implementation principle of the hydrochloric acid storage tank in the embodiment of the present application is: When using the device, first fix the cylindrical airbag 21 by assembling the upper storage tank 11 and the lower storage tank 12, and fix the airbag liquid inlet 25 by assembling the semicircular clamping ring 31, the flange 32, and the compression ring 33. At this time, the cylindrical airbag 21 contacts the inner wall of the lower storage tank 12, and hydrochloric acid is poured into the airbag liquid inlet 25. The hydrochloric acid flows directly into the bottom of the lower storage tank 12 along the airbag infusion tube 22. As the hydrochloric acid liquid level rises The lower part of the airbag infusion tube 22 is folded along the folded opening 24 toward the upper part of the airbag infusion tube 22, and the cylindrical airbag 21 gradually moves upward as the liquid level of hydrochloric acid rises and overlaps with the inner wall of the upper storage tank 11, and at the same time, the exhaust valve 43 extracts the gas inside the upper storage tank 11; when the hydrochloric acid inside the lower storage tank 12 is discharged from the discharge ring opening 14, the exhaust valve 43 extracts the gas inside the upper storage tank 11 to ensure that the inflow and outflow of gas is balanced with the inflow and outflow of hydrochloric acid.

[0041] In addition, it should be noted that in the description of this application, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For those skilled in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0042] The above is a preferred embodiment of the present application. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles described in the present application. These improvements and modifications should also be regarded as the scope of protection of the present application.

Claims

1. A hydrochloric acid storage tank, comprising a cylindrical upper storage tank (11) and a lower storage tank (12), wherein the upper storage tank (11) is provided with a feed ring opening (13), the lower storage tank (12) is provided with a discharge ring opening (14), and an exhaust assembly (4) is provided at the feed ring opening (13), characterized in that: A cylindrical air bag (21) is installed at the joint of the upper storage tank (11) and the lower storage tank (12), and an air bag infusion tube (22) is arranged on the cylindrical air bag (21). The air bag infusion tube (22) is used to transport hydrochloric acid liquid from the feed ring opening (13) to the bottom of the lower storage tank (12). The cylindrical air bag (21) and the air bag infusion tube (22) are coaxially arranged. An air bag outlet (23) communicating with the air bag infusion tube (22) is opened on the cylindrical air bag (21), and a folded opening (24) is arranged in the middle of the air bag infusion tube (22).

2. The hydrochloric acid storage tank according to claim 1, characterized in that: The feed ring opening (13) is provided with two semicircular clamping rings (31), a flange (32) is threadedly connected to the semicircular clamping ring (31), and the flange (32), the semicircular clamping ring (31) and the feed ring opening (13) are coaxially arranged.

3. The hydrochloric acid storage tank according to claim 1, characterized in that: The exhaust assembly (4) comprises an exhaust hollow column (41) arranged on a semicircular clamping plate ring (31), each semicircular clamping plate ring (31) being provided with two exhaust hollow columns (41) symmetrical to each other, the exhaust hollow columns (41) penetrating the inner and outer side walls of the clamping plate (53) and penetrating the feed ring opening (13).

4. The hydrochloric acid storage tank according to claim 3, characterized in that: The two groups of symmetrical exhaust hollow columns (41) are both rotatably connected to a rotating shaft (42), a connecting plate (51) is fixedly mounted on the rotating shaft (42), a return spring (52) is arranged between the connecting plate (51) and the feed ring opening (13), and a clamping plate (53) for clamping the airbag infusion tube (22) is fixedly mounted on the rotating shaft (42).

5. The hydrochloric acid storage tank according to claim 3, characterized in that: The exhaust assembly (4) further comprises an exhaust valve (43) provided on the rotating shaft (42) and an exhaust hole (44) provided on the exhaust hollow column (41), wherein the exhaust hole (44) is provided on three of the exhaust hollow columns (41).

6. The hydrochloric acid storage tank according to claim 4, characterized in that: An air inlet hole (45) is provided on the exhaust hollow column (41), the air inlet hole (45) is provided on one of the exhaust hollow columns (41), and an air inlet valve (46) is provided on the exhaust hollow column (41).

7. The hydrochloric acid storage tank according to claim 1, characterized in that: The discharge ring opening (14) is provided with a twist cover (6), a telescopic spring (61) is installed on the twist cover (6), and a piston (62) is provided on the telescopic spring (61).

8. The hydrochloric acid storage tank according to claim 1, characterized in that: The airbag infusion tube (22) is connected to an airbag liquid inlet (25) located at the feed ring (13), and a compression ring (33) is installed on the feed ring (13) to fix the airbag liquid inlet (25).

9. The hydrochloric acid storage tank according to claim 8, characterized in that: A connecting thread (34) is provided on the inner wall of the compression ring (33).

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