A leak-proof hazardous chemical storage device

Abstract

This invention relates to the field of chemical storage technology, specifically to a leak-proof hazardous chemical storage device. It includes a tank body with an upper plate and a lower plate concentrically fixed at its upper and lower ends, respectively. Multiple elastic plates are evenly distributed around the outer circumference of the tank body between the upper and lower plates. Each elastic plate has a fixing plate fixed to both ends in the circumferential direction. A sealed cavity is formed between the elastic plates, the tank body, the upper plate, and the lower plate. A protrusion is formed in the center of each elastic plate protruding outwards from the tank body. Swing frames are respectively installed on both sides of the protrusion, and pressure rollers are rotatably mounted on the swing frames, pressing against the elastic plates. This invention uses sensors installed within the sealed cavity to monitor leakage signals in real time, achieving rapid response; a motor-driven pressure roller compresses the elastic plates, making them adhere tightly to the leak point in the tank body to form a physical barrier; combined with the arc-shaped design of the fixing strips, it ensures a seamless seal, effectively blocking the leakage path of chemicals.

Description

Technical Field

[0001] This invention relates to the field of chemical storage technology, and more specifically to a leak-proof hazardous chemical storage device. Background Technology

[0002] In the storage and transportation of hazardous chemicals, leak prevention technology is crucial. Hazardous chemicals are typically corrosive, toxic, or flammable and explosive. Leaks not only pollute the environment but can also cause major safety accidents, threatening lives and property. Traditional chemical storage tanks mostly employ static sealing structures, such as fixed linings or multi-layered tank wall designs. While these provide basic protection under normal operating conditions, leaks are often difficult to detect and address promptly when the tank wall is damaged or has minor cracks. Existing facilities lack effective real-time monitoring and rapid response mechanisms, allowing leaked materials to spread rapidly, increasing the difficulty of neutralization and the risk of secondary pollution. Furthermore, traditional methods rely on external manual intervention to seal leaks, requiring shutdowns for maintenance. This not only reduces operational efficiency but also prolongs the exposure time of leaks, failing to meet the demands of modern chemical industries for automation and high-efficiency safety.

[0003] Therefore, an intelligent leak-proof storage device is needed that can detect leaks in real time, automatically seal leaks, and neutralize leaked materials to minimize risks. Summary of the Invention

[0004] The main objective of this invention is to provide a storage device capable of automatically sealing leaks in the sidewalls of storage tanks and handling leaked hazardous chemicals.

[0005] To achieve the above objectives, the technical solution provided by this invention is as follows:

[0006] A leak-proof hazardous chemical storage device includes a tank body with an inlet pipe and an outlet pipe fixedly connected to its upper and lower ends, respectively. An upper plate and a lower plate are concentrically fixed to the upper and lower ends of the tank body, respectively. Multiple elastic plates are evenly distributed around the outer circumference of the tank body between the upper and lower plates. The upper and lower ends of the elastic plates are in sliding, sealing contact with the opposite end faces of the upper and lower plates, respectively. Fixing plates are fixed to both ends of the elastic plates in the circumferential direction of the tank body. The fixing plates are in sealing contact with the outer wall of the tank body and are detachably fixed to the upper and lower plates. The two adjacent fixing plates of two adjacent elastic plates are in sealing contact. A sealed cavity is formed between the elastic plates, the tank body, the upper plate, and the lower plate. The elastic sheet protrudes outward from the middle of the tank body to form a raised part. A swing frame is set on both sides of the raised part, and a pressure roller is rotatably mounted on the swing frame. The pressure roller is pressed against the elastic sheet. The elastic sheet part on the outer side of the two pressure rollers is in sealed contact with the outer wall of the tank body. An air bladder corresponding to the sealing cavity is fixed on the upper plate. An air passage corresponding to and connected to the air bladder is opened on the upper plate. The lower end of the air passage is connected to the corresponding sealing cavity. A fixing strip is set in the sealing cavity. The fixing strip is located in the center of the sealing cavity and is fixed to the outer wall of the tank body. The fixing strip in the circumferential direction of the tank body has arc surfaces on both sides. As the two pressure rollers approach each other, the elastic sheet gradually seals and adheres to the outer wall of the tank body.

[0007] Specifically, the swing frame includes an upper telescopic rod and a lower telescopic rod arranged symmetrically. The lower telescopic rod is an elastic telescopic rod. The telescopic ends of the upper and lower telescopic rods are rotatably connected to both ends of the pressure roller. The upper telescopic rod includes an upper rod, in which an upper sliding rod is slidably arranged. The upper rod is rotatably connected to the upper plate. The lower telescopic rod includes a lower rod, in which a lower sliding rod is slidably arranged. Both sides of the lower sliding rod portion of the lower rod are provided with sliding grooves, and springs are provided in the sliding grooves. One end of the spring is fixedly connected to the lower sliding rod, and the other end of the spring is fixedly connected to the lower rod. The lower rods on both sides of the elastic plate protrusion are fixedly connected to the output shafts of the first motor and the second motor, respectively. The first motor and the second motor are fixed in the lower plate.

[0008] Specifically, an electromagnet is fixed inside the lower rod, and the sliding rod is an iron rod.

[0009] Specifically, a stirring rod is provided inside the sealed cavity, and the stirring rod is rotatably connected to the lower plate. A third motor is fixed inside the lower plate, and the output shaft of the third motor is concentrically fixedly connected to the stirring rod.

[0010] Specifically, a sensor is fixed at the upper end of the lower plate, and the number of sensors is equal to the number of sealed cavities. The sensors are located in the corresponding sealed cavities. The sensors, the first motor, the second motor, the third motor, and the controller are electrically connected. After the elastic sheet contacts the arc surface of the fixing strip, the sensor and the stirring rod are located in the sealed cavity.

[0011] Specifically, the lower plate has an annular waste liquid chamber, and the lower plate inside the waste liquid chamber has an annular neutralization liquid chamber. The lower plate has a first channel connecting the sealed chamber and the waste liquid chamber, and a first solenoid valve is installed in the first channel. The lower plate above the neutralization liquid chamber has an annular transfer chamber, and a liquid pump is installed in the lower plate. The inlet end of the liquid pump is connected to the neutralization liquid chamber, and the outlet end of the liquid pump is connected to the transfer chamber. The lower plate has a second channel connecting the transfer chamber and the sealed chamber, and a second solenoid valve is installed in the second channel. The sensor is electrically connected to the first solenoid valve, the second solenoid valve, and the liquid pump. A waste liquid pipe connected to the waste liquid chamber is fixed on the lower plate, and a liquid filling pipe connected to the neutralization liquid chamber is fixed on the lower plate.

[0012] Specifically, valves are installed on both the inlet and outlet pipes.

[0013] Specifically, both the upper and lower ends of the elastic sheet are fixedly and sealed with sealing gaskets. The upper sealing gasket is in sealing contact with the lower end face of the upper plate, and the lower sealing gasket is in sealing contact with the upper end face of the lower plate.

[0014] Specifically, the elastic sheet includes an elastic steel strip, the outer side of which is covered with a corrosion-resistant rubber layer.

[0015] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0016] 1. The sensor installed in the sealed cavity monitors the leakage signal in real time, enabling a rapid response and triggering the emergency mechanism without manual intervention; the motor-driven pressure roller squeezes the elastic sheet to form a physical barrier against the leak point of the tank, and the fixed strip arc surface design ensures a seal without dead angles, effectively blocking the leakage path of hazardous chemicals.

[0017] 2. The forced convection design of the stirring rod significantly improves the contact efficiency between the neutralizing liquid and hazardous chemicals, shortens the reaction time, and reduces the risk of environmental exposure. The entire process, from neutralizing liquid injection and reaction to waste liquid discharge, is completed in a closed chamber, completely eliminating the risk of secondary pollution.

[0018] 3. The compressed gas in the airbag creates negative pressure during the waste liquid discharge stage, which greatly improves the waste liquid removal speed. The waste liquid chamber and the neutral liquid chamber are independently designed in annular shape, and the flow direction is precisely controlled by the solenoid valve to reduce pollutant residue.

[0019] 4. After the electromagnet attracts the sliding rod, the pressure roller is released. The detachable fixing plate allows for the removal of the elastic sheet, facilitating the repair of leaks in the tank. The circumferentially distributed sealing cavities of the tank do not interfere with each other, and a leak in a single area does not affect the overall function.

[0020] 5. The elastic steel strip and the corrosion-resistant rubber layer form an elastic sheet, which takes into account both mechanical strength and long-term chemical resistance.

[0021] 6. The sensor and neutralizing solution can be flexibly selected according to the characteristics of the stored chemicals, making it suitable for storing various hazardous chemicals such as acids, alkalis, and solvents. The upper and lower sealing gaskets are designed to slide in contact with the upper and lower plates respectively, ensuring a dynamic seal between the tank and the sealing cavity under any operating conditions, effectively preventing leakage of hazardous chemicals. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the present invention.

[0023] Figure 2 This is a cross-sectional schematic diagram of the present invention.

[0024] Figure 3 for Figure 2 A magnified view of region A in the middle.

[0025] Figure 4 for Figure 2 A magnified view of region B in the middle.

[0026] Figure 5 This is a cross-sectional view of the present invention.

[0027] Figure 6 for Figure 5 A magnified view of region C in the middle.

[0028] Figure 7 This is a schematic diagram of the swing frame on both sides of the protrusion of the elastic sheet.

[0029] Figure 8 This is a sectional view of the swing frame.

[0030] Figure 9 for Figure 8 A magnified view of region D in the middle.

[0031] Figure 10 This is a schematic diagram of a pressure roller pressing an elastic sheet.

[0032] Figure 11 This is a top view of the sealed cavity after the elastic sheet and the fixing strip are sealed together on their curved surfaces.

[0033] The components in the attached diagram are named as follows: 1. Tank body; 2. Inlet pipe; 3. Outlet pipe; 4. Upper plate; 5. Airbag; 6. Lower plate; 7. Upper rod; 8. Lower rod; 9. Upper sliding rod; 901. Lower sliding rod; 10. Sealing cavity; 11. Pressure roller; 12. Fixing strip; 13. First motor; 14. Second motor; 15. Slide groove; 16. Spring; 17. Electromagnet; 18. Elastic sheet; 19. Fixing plate; 20. Sealing gasket; 21. Third motor; 22. Stirring rod; 23. Waste liquid cavity; 24. Neutralizing liquid cavity; 25. Transfer cavity; 26. First channel; 27. Second channel; 28. First solenoid valve; 29. ​​Second solenoid valve; 30. Sensor; 31. Liquid pump; 32. Liquid filling pipe; 33. Waste liquid pipe. Detailed Implementation

[0034] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0035] like Figures 1-11 As shown, a leak-proof hazardous chemical storage device includes a tank 1, with an inlet pipe 2 and an outlet pipe 3 fixedly connected to the upper and lower ends of the tank 1, respectively, and valves installed on both the inlet pipe 2 and the outlet pipe 3.

[0036] An upper plate 4 and a lower plate 6 are concentrically fixed at the upper and lower ends of the tank body 1, respectively. Multiple elastic plates 18 are evenly distributed around the outer circumference of the tank body 1 between the upper plate 4 and the lower plate 6. The upper and lower ends of the elastic plates 18 are in sliding, sealing contact with the opposite end faces of the upper plate 4 and the lower plate 6, respectively. Specifically, sealing gaskets 20 are fixedly and sealingly connected to both the upper and lower ends of the elastic plates 18. The upper sealing gasket 20 is in sealing contact with the lower end face of the upper plate 4, and the lower sealing gasket 20 is in sealing contact with the upper end face of the lower plate 6.

[0037] The elastic sheet 18 includes an elastic steel strip, the outer side of which is covered with a corrosion-resistant rubber layer.

[0038] Both ends of the elastic sheet 18 in the circumferential direction of the tank body 1 are fixed with fixing plates 19. The fixing plates 19 are in sealed contact with the outer wall of the tank body 1. The fixing plates 19 are detachably fixed to the upper plate 4 and the lower plate 6. The two adjacent fixing plates 19 of two adjacent elastic sheets 18 are in sealed contact.

[0039] A sealed cavity 10 is formed between the elastic sheet 18, the tank body 1, the upper plate 4 and the lower plate 6. The middle part of the elastic sheet 18 protrudes outward from the tank body 1 to form a protrusion. A swing frame is provided on both sides of the protrusion. A pressure roller 11 is rotatably mounted on the swing frame. The pressure roller 11 presses against the elastic sheet 18. The elastic sheet 18 parts on the outer side of the two pressure rollers 11 are in sealed contact with the outer wall of the tank body 1.

[0040] The swing frame includes an upper telescopic rod and a lower telescopic rod arranged symmetrically at the top and bottom. The lower telescopic rod is an elastic telescopic rod. The telescopic ends of the upper and lower telescopic rods are rotatably connected to the two ends of the pressure roller 11.

[0041] The upper telescopic rod includes an upper rod 7, and an upper sliding rod 9 is slidably disposed inside the upper rod 7. The upper rod 7 is rotatably connected to the upper plate 4.

[0042] The lower telescopic rod includes a lower rod 8, and a lower sliding rod 901 is slidably arranged inside the lower rod 8. Both sides of the lower sliding rod 901 in the lower rod 8 are provided with sliding grooves 15, and springs 16 are provided in the sliding grooves 15. One end of the spring 16 is fixedly connected to the lower sliding rod 901, and the other end of the spring 16 is fixedly connected to the lower rod 8.

[0043] The lower rods 8 on both sides of the protrusion of the elastic sheet 18 are fixedly connected to the output shafts of the first motor 13 and the second motor 14, respectively. The first motor 13 and the second motor 14 are fixed in the lower plate 6.

[0044] An airbag 5 corresponding to the sealing cavity 10 is fixed on the upper plate 4. An air passage corresponding to and connected to the airbag 5 is opened on the upper plate 4, and the lower end of the air passage is connected to the corresponding sealing cavity 10.

[0045] A fixing strip 12 is provided inside the sealing cavity 10. The fixing strip 12 is centrally located in the sealing cavity 10 and is fixed to the outer wall of the tank body 1. Both sides of the fixing strip 12 in the circumferential direction of the tank body 1 are provided with arc surfaces. As the two pressure rollers 11 approach each other, the elastic sheet 18 gradually seals and adheres to the outer wall of the tank body 1.

[0046] An electromagnet 17 is fixed inside the lower rod 8. The lower sliding rod 901 is an iron rod. When the electromagnet 17 is energized, it generates magnetic force, which magnetically attracts the lower sliding rod 901 to overcome the resistance of the spring 16.

[0047] A stirring rod 22 is installed inside the sealed cavity 10. The stirring rod 22 is rotatably connected to the lower plate 6. A third motor 21 is fixed inside the lower plate 6. The output shaft of the third motor 21 is concentrically fixedly connected to the stirring rod 22.

[0048] Sensors 30 are fixed to the upper end of the lower plate 6. The number of sensors 30 is equal to the number of sealed cavities 10. The sensors 30 are located in the corresponding sealed cavities 10. The sensors 30, the first motor 13, the second motor 14, the third motor 21, and the controller are electrically connected. The sensors 30 can be selected according to the type of hazardous chemicals stored in the tank 1.

[0049] After the elastic sheet 18 comes into contact with the arc surface of the fixing strip 12, the sensor 30 and the stirring rod 22 are located in the sealed cavity 10.

[0050] The lower plate 6 has an annular waste liquid chamber 23. Inside the waste liquid chamber 23, the lower plate 6 has an annular neutralization liquid chamber 24. The lower plate 6 has a first channel 26 connecting the sealing chamber 10 and the waste liquid chamber 23. A first solenoid valve 28 is installed in the first channel 26. Above the neutralization liquid chamber 24, the lower plate 6 has an annular transfer chamber 25. A liquid pump 31 is installed in the lower plate 6. The inlet end of the liquid pump 31 is connected to the neutralization liquid chamber 24, and the outlet end of the liquid pump 31 is connected to the transfer chamber 25. The lower plate 6 has a second channel 27 connecting the transfer chamber 25 and the sealing chamber 10. A second solenoid valve 29 is installed in the second channel 27. The sensor 30 is electrically connected to the first solenoid valve 28, the second solenoid valve 29, and the liquid pump 31.

[0051] A waste liquid pipe 33 connected to the waste liquid chamber 23 is fixed on the lower plate 6, and a liquid addition pipe 32 connected to the neutralization liquid chamber 24 is fixed on the lower plate 6. Neutralization liquid can be added to the neutralization liquid chamber 24 through the liquid addition pipe 32. The neutralization liquid is selected according to the properties (such as acidity, alkalinity, oxidizing power) of the hazardous chemicals in the tank 1.

[0052] When a leak occurs in the side wall of the tank 1 corresponding to the sealing cavity 10, the hazardous chemicals in the tank 1 are discharged from the leak point and enter the sealing cavity 10. When the sensor 30 in the sealing cavity 10 detects the hazardous chemicals, the sensor 30 sends a signal to the controller. The controller starts the first motor 13 and the second motor 14, which causes the pressure rollers 11 on both sides of the protrusion of the elastic sheet 18 to move closer to each other. During the process of the two pressure rollers 11 moving closer to each other, the upper sliding rod 9 and the lower sliding rod 901 move into the upper rod 7 and the lower rod 8 respectively. The spring 16 is compressed, and the elastic sheet 18 gradually seals and adheres to the outer wall of the tank 1. The volume of the sealing cavity 10 gradually decreases, and the gas in the sealing cavity 10 enters the air bag 5 through the air passage, and the air bag 5 inflates.

[0053] When the elastic sheet 18 contacts the arc surface of the fixing strip 12, the elastic sheet 18 seals the leak point on the side wall of the tank body 1. The state of the elastic sheet 18 at this time is as follows: Figure 11 As shown, the sensor 30 and the stirring rod 22 are located in the sealed cavity 10 after the volume is reduced.

[0054] Then the controller starts the liquid pump 31 and opens the second solenoid valve 29 and the third motor 21. The liquid pump 31 delivers the neutralized liquid in the neutralized liquid chamber 24 to the transfer chamber 25. The neutralized liquid in the transfer chamber 25 enters the sealed chamber 10 through the second channel 27 and the second solenoid valve 29 to neutralize the hazardous chemicals in the sealed chamber 10.

[0055] During the neutralization process of hazardous chemicals, the third motor 21 drives the stirring rod 22 to rotate, which increases the reaction rate between the hazardous chemicals and the neutralization liquid.

[0056] When sensor 30 no longer detects hazardous chemicals, the controller shuts off liquid pump 31 and the second solenoid valve 29, and the neutralizing liquid no longer enters the sealed chamber 10.

[0057] Then the controller opens the first solenoid valve 28, and the liquid in the sealed cavity 10 is discharged through the first solenoid valve 28, the first channel 26, the waste liquid cavity 23 and the waste liquid pipe 33.

[0058] After the first solenoid valve 28 is opened, the liquid in the sealed cavity 10 can be discharged more quickly under the action of the compressed gas in the airbag 5.

[0059] After the hazardous chemicals in tank 1 are discharged, the leaks in tank 1 need to be sealed.

[0060] When sealing a leak in tank 1, the electromagnet 17 of the swing frame corresponding to the leak in tank 1 is activated. After activation, the electromagnet 17 magnetically attracts the sliding rod 901, and the pressure roller 11 moves away from the elastic plate 18. Then, the elastic plate 18 corresponding to the leak in tank 1 is removed. When removing the elastic plate 18, the fixing plates 19 at both ends of the elastic plate 18 are separated from the upper plate 4 and the lower plate 6, and then the leak in tank 1 can be sealed.

[0061] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A leak-proof hazardous chemical storage device, comprising a tank (1), wherein an inlet pipe (2) and an outlet pipe (3) are fixedly connected to the upper and lower ends of the tank (1), respectively, characterized in that, The upper plate (4) and lower plate (6) are concentrically fixed at the upper and lower ends of the tank (1), respectively. Multiple elastic plates (18) are evenly distributed on the outer circumference of the tank (1) between the upper plate (4) and the lower plate (6). The upper and lower ends of the elastic plates (18) are in sliding sealing contact with the opposite end faces of the upper plate (4) and the lower plate (6), respectively. Fixing plates (19) are fixed at both ends of the elastic plates (18) in the circumferential direction of the tank (1). The fixing plates (19) are in sealing contact with the outer wall of the tank (1). The fixing plates (19) are detachably fixed to the upper plate (4) and the lower plate (6). The two adjacent fixing plates (19) of two adjacent elastic plates (18) are in sealing contact. A sealed cavity (10) is formed between the elastic plates (18), the tank (1), the upper plate (4) and the lower plate (6). The middle part of the elastic plate (18) protrudes outward from the tank (1) to form a convex shape. The upper part and the two sides of the protrusion are respectively provided with swing frames. The swing frames are rotatably provided with pressure rollers (11). The pressure rollers (11) are pressed against the elastic sheet (18). The elastic sheet (18) on the outer side of the two pressure rollers (11) is in sealed contact with the outer wall of the tank body (1). An air bag (5) corresponding to the sealing cavity (10) is fixed on the upper plate (4). An air passage corresponding to and connected to the air bag (5) is opened on the upper plate (4). The lower end of the air passage is connected to the corresponding sealing cavity (10). A fixing strip (12) is provided in the sealing cavity (10). The fixing strip (12) is located in the center of the sealing cavity (10). The fixing strip (12) is fixed on the outer wall of the tank body (1). The fixing strip (12) in the circumferential direction of the tank body (1) is provided with arc surfaces on both sides. As the two pressure rollers (11) approach each other, the elastic sheet (18) gradually seals and adheres to the outer wall of the tank body (1).

2. The leak-proof hazardous chemical storage device according to claim 1, characterized in that, The swing frame includes an upper telescopic rod and a lower telescopic rod arranged symmetrically. The lower telescopic rod is an elastic telescopic rod. The telescopic ends of the upper and lower telescopic rods are rotatably connected to both ends of the pressure roller (11). The upper telescopic rod includes an upper rod (7). An upper sliding rod (9) is slidably arranged inside the upper rod (7). The upper rod (7) is rotatably connected to the upper plate (4). The lower telescopic rod includes a lower rod (8). A lower sliding rod (901) is slidably arranged inside the lower rod (8). Sliding grooves (15) are provided on both sides of the lower sliding rod (901) part inside the lower rod (8). Springs (16) are provided in both sliding grooves (15). One end of the spring (16) is fixedly connected to the lower sliding rod (901). The other end of the spring (16) is fixedly connected to the lower rod (8). The lower rods (8) on both sides of the protrusion of the elastic sheet (18) are fixedly connected to the output shafts of the first motor (13) and the second motor (14), respectively. The first motor (13) and the second motor (14) are fixed in the lower plate (6).

3. The leak-proof hazardous chemical storage device according to claim 2, characterized in that, An electromagnet (17) is fixed inside the lower rod (8), and the lower sliding rod (901) is an iron rod.

4. The leak-proof hazardous chemical storage device according to claim 1, characterized in that, A stirring rod (22) is provided inside the sealed cavity (10). The stirring rod (22) is rotatably connected to the lower plate (6). A third motor (21) is fixed inside the lower plate (6). The output shaft of the third motor (21) is concentrically fixedly connected to the stirring rod (22).

5. A leak-proof hazardous chemical storage device according to claim 4, characterized in that, Sensors (30) are fixed at the upper end of the lower plate (6). The number of sensors (30) is equal to the number of sealed cavities (10). The sensors (30) are located in the corresponding sealed cavities (10). The sensors (30), the first motor (13), the second motor (14), the third motor (21) and the controller are electrically connected. After the elastic sheet (18) contacts the arc surface of the fixing strip (12), the sensors (30) and the stirring rod (22) are located in the sealed cavity (10).

6. A leak-proof hazardous chemical storage device according to claim 5, characterized in that, An annular waste liquid chamber (23) is provided inside the lower plate (6). An annular neutralization liquid chamber (24) is provided inside the lower plate (6) on the inner side of the waste liquid chamber (23). A first channel (26) is provided inside the lower plate (6) to connect the sealed chamber (10) and the waste liquid chamber (23). A first solenoid valve (28) is installed in the first channel (26). An annular transfer chamber (25) is provided in the lower plate (6) above the neutralization liquid chamber (24). A liquid pump (31) is installed in the lower plate (6). The inlet end of the liquid pump (31) is connected to the neutralization liquid chamber (24). The outlet end of the liquid pump (31) is connected to the transfer chamber (25). A second channel (27) connecting the transfer chamber (25) and the sealing chamber (10) is opened in the lower plate (6). A second solenoid valve (29) is installed in the second channel (27). The sensor (30) is electrically connected to the first solenoid valve (28), the second solenoid valve (29) and the liquid pump (31). A waste liquid pipe (33) connected to the waste liquid chamber (23) is fixed on the lower plate (6). A liquid filling pipe (32) connected to the neutral liquid chamber (24) is fixed on the lower plate (6).

7. The leak-proof hazardous chemical storage device according to claim 1, characterized in that, Valves are installed on both the inlet pipe (2) and the outlet pipe (3).

8. The leak-proof hazardous chemical storage device according to claim 1, characterized in that, Both ends of the elastic sheet (18) are fixedly and sealed with sealing gaskets (20). The upper sealing gasket (20) is in sealing contact with the lower end face of the upper plate (4), and the lower sealing gasket (20) is in sealing contact with the upper end face of the lower plate (6).

9. A leak-proof hazardous chemical storage device according to claim 1, characterized in that, The elastic sheet (18) includes an elastic steel strip, the outer side of which is covered with a corrosion-resistant rubber layer.

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