Sealed storage device for liquid tetrahydrophthalic anhydride

Abstract

The utility model relates to the field of storage devices, in particular to a sealed storage device for liquid tetrahydrophthalic anhydride, which comprises a bottom plate. The device further comprises a storage tank, a sealing assembly, a heating assembly, a gas injection assembly and a protection assembly. A storage tank is arranged at the upper end of the bottom plate, a sealing assembly is arranged at the upper end of the storage tank, a heating assembly is arranged in the storage tank, a gas injection assembly is arranged at the right end of the storage tank, and a protection assembly is arranged on the outer wall of the storage tank. The first threaded ring is arranged at the upper end of the storage tank, the sealing cover can be taken down through rotation, a sealing gasket at the top end of the inner wall of the sealing cover can be replaced conveniently, and the situation that air enters the storage tank due to aging of the sealing gasket is avoided; the problem of contact reaction between moisture in air and liquid in the storage tank is solved.

Description

Technical Field

[0001] This utility model belongs to the field of storage devices, specifically relating to a sealed storage device for liquid tetrahydrophthalic anhydride. Background Technology

[0002] Tetrahydrophthalic anhydride is a chemical raw material widely used in the chemical, coating, resin, and plastics industries. Due to its excellent chemical properties, tetrahydrophthalic anhydride is used in industrial production as a plasticizer, hardener, and intermediate in resin synthesis. Effective measures must be taken during storage, transportation, and use to prevent leakage, contamination, and potential hazards to the environment and operators.

[0003] In existing storage devices, the sealing gaskets age after prolonged sealed storage, leading to reduced sealing performance and making it difficult to replace the gaskets easily. This allows air and moisture to enter the storage tank, causing the liquid inside to react.

[0004] Therefore, a sealed storage device for liquid tetrahydrophthalic anhydride is proposed. By providing a rotatable sealing cover, the sealing gasket can be easily replaced. By placing a desiccant inside the sleeve, moisture can be effectively prevented from entering the storage tank. Utility Model Content

[0005] To overcome the problem that existing storage devices experience aging of the gaskets after long-term sealed storage, leading to reduced sealing performance and difficulty in replacing the gaskets, which allows air and moisture to enter the storage tank and cause the liquid inside to react, a sealed storage device for liquid tetrahydrophthalic anhydride is proposed.

[0006] The technical solution of this utility model is as follows: a sealed storage device for liquid tetrahydrophthalic anhydride, including a base plate; it also includes a storage tank, a sealing component, a heating component, a gas injection component, and a protective component; the storage tank is provided at the upper end of the base plate, the sealing component is provided at the upper end of the storage tank, the heating component is provided inside the storage tank, the gas injection component is provided at the right end of the storage tank, and the protective component is provided on the outer wall of the storage tank; the sealing component includes a first threaded ring, a sealing cap, a sealing gasket, a second threaded ring, a sleeve, a first round hole, and a desiccant; the first threaded ring is fixedly connected to the upper end of the storage tank, the sealing cap is rotatably provided on the outer wall of the first threaded ring, the sealing gasket is fixedly connected to the top of the inner wall of the sealing cap, the second threaded ring is fixedly connected to the top of the inner wall of the sealing cap, the sleeve is rotatably provided on the outer wall of the second threaded ring, and multiple first round holes are opened through the lower end of the sleeve, and multiple desiccants are placed on the inner wall of the sleeve.

[0007] Preferably, a first threaded ring is provided at the top of the storage tank, allowing the sealing cap to be removed by rotation. This facilitates the replacement of the sealing gasket at the top of the inner wall of the sealing cap, preventing air from entering the storage tank due to gasket aging. A sleeve is provided at the top of the inner part of the sealing cap, containing a desiccant, which solves the problem of moisture in the air reacting with the liquid in the storage tank. Inert gas from the gas storage tank can be injected into the storage tank through a delivery pipe, effectively isolating the liquid in the storage tank and preventing contact with external substances. The motor-driven rotating shaft ensures that the stirring plate distributes heat evenly during heating, preventing local overheating or undercooling of the liquid. This prevents tetrahydrophthalic anhydride from thermally decomposing or being damaged due to excessively high local temperatures during heating. A water level gauge is provided to monitor the liquid volume in the storage tank in real time, preventing the heating rod from burning dry. A smoke alarm is provided to promptly sound an alarm in the event of a fire near the storage tank and activates the third solenoid valve through the control box, spraying dry powder through nozzles to extinguish the fire and prevent the liquid in the storage tank from coming into contact with the fire and exploding.

[0008] Preferably, a support block is fixed to the upper end of the base plate, a support column is fixed to the upper end of the support block, the upper end of the support column is fixed to the lower end of the storage tank, a discharge pipe is fixed to the outer wall of the storage tank, a first solenoid valve is fixed to the discharge pipe, and a warning sign is fixed to the outer wall of the storage tank.

[0009] Preferably, the gas injection assembly includes a first fixing plate, a gas storage tank, a delivery pipe, and a second solenoid valve; the first fixing plate is fixedly connected to the right side of the outer wall of the storage tank, the gas storage tank is fixedly connected to the upper end of the first fixing plate, the delivery pipe is fixedly connected to the lower end of the gas storage tank, the other end of the delivery pipe is located inside the storage tank, and the second solenoid valve is fixedly connected to the end of the delivery pipe near the storage tank.

[0010] Preferably, the heating assembly includes a motor, a rotating rod, a stirring plate, a second circular hole, a temperature sensor, a fixing ring, a fixing hole, a heating rod, a first tank, and a water level gauge; a motor is fixedly connected to the lower end of the storage tank, the motor output shaft passes through the lower end of the storage tank and is fixedly connected to a rotating rod, a stirring plate is fixedly connected to the outer wall of the rotating rod, a plurality of second circular holes are opened through the front end of the stirring plate, and a temperature sensor is fixedly connected to the upper end of the rotating rod.

[0011] Preferably, a fixing ring is fixed to the inner wall of the storage tank, a fixing hole is opened through the upper end of the fixing ring, a heating rod is fixed to the inner wall of the fixing hole, a first groove is opened through the upper end of the fixing ring, and a water level gauge is fixed to the inner wall of the storage tank, the water level gauge is located inside the first groove.

[0012] Preferably, the protective components include a circular pipe, a smoke detector, a branch pipe, a nozzle, a third solenoid valve, a connecting pipe, and a dry powder box; a circular pipe is fixed to the outer wall of the storage tank, a smoke detector is fixed to the outer wall of the circular pipe, a branch pipe is fixed to the lower end of the circular pipe, a nozzle is fixed to the lower end of the branch pipe, a third solenoid valve is fixed to the branch pipe, a connecting pipe is fixed to the right side of the outer wall of the circular pipe, a dry powder box is fixed to the upper end of the bottom plate, and the other end of the connecting pipe is fixed to the left end of the dry powder box.

[0013] Preferably, a control box is fixedly connected to the upper end of the dry powder box. The front end of the control box is equipped with a display screen, and the temperature sensor, smoke alarm, water level gauge, heating rod, and third solenoid valve are electrically connected to the control box.

[0014] The beneficial effects of this utility model are as follows: By providing a first threaded ring at the top of the storage tank, the sealing cover can be removed by rotation, making it convenient to replace the sealing gasket at the top of the inner wall of the sealing cover, thus preventing the sealing gasket from aging and causing air to enter the storage tank. By providing a sleeve at the top of the inner wall of the sealing cover, and placing a desiccant inside the sleeve, the problem of moisture in the air reacting with the liquid in the storage tank is solved. Inert gas from the gas storage tank can be injected into the storage tank through the delivery pipe, which can effectively isolate the liquid in the storage tank and prevent it from contacting external substances. Attached Figure Description

[0015] Figure 1 The diagram shown is a three-dimensional structural schematic of a sealed storage device for liquid tetrahydrophthalic anhydride according to the present invention.

[0016] Figure 2 The diagram shown is a cross-sectional perspective view of the sealing component of a sealed storage device for liquid tetrahydrophthalic anhydride according to this utility model.

[0017] Figure 3 The diagram shown is a three-dimensional structural schematic of the gas injection component of a sealed storage device for liquid tetrahydrophthalic anhydride according to this utility model.

[0018] Figure 4 The diagram shown is a cross-sectional perspective view of the heating component of a sealed storage device for liquid tetrahydrophthalic anhydride according to this utility model.

[0019] Figure 5 The diagram shown is a three-dimensional structural schematic of a protective component for a sealed storage device for liquid tetrahydrophthalic anhydride according to the present invention.

[0020] The markings in the attached diagram are as follows: 1. Base plate; 2. Support block; 3. Support column; 4. Storage tank; 5. Discharge pipe; 6. First solenoid valve; 7. Warning sign; 8. Control box; 9. Display screen; 101. First threaded ring; 102. Sealing cap; 103. Sealing gasket; 104. Second threaded ring; 105. Sleeve; 106. First round hole; 107. Desiccant; 201. First fixing plate; 202. Gas storage tank; 203. Conveying pipe; 204. Second solenoid valve; 301. Motor; 302. Rotating rod; 303. Stirring plate; 304. Second circular hole; 305. Temperature sensor; 306. Fixing ring; 307. Fixing hole; 308. Heating rod; 309. First tank; 310. Water level gauge; 401. Circular pipe; 402. Smoke alarm; 403. Branch pipe; 404. Nozzle; 405. Third solenoid valve; 406. Connecting pipe; 407. Dry powder box. Detailed Implementation

[0021] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0022] Please see Figures 1-5 This utility model provides an embodiment: a sealed storage device for liquid tetrahydrophthalic anhydride, including a base plate 1; it also includes a storage tank 4, a sealing assembly, a heating assembly, a gas injection assembly, and a protective assembly; the storage tank 4 is disposed on the upper end of the base plate 1, the sealing assembly is disposed on the upper end of the storage tank 4, the heating assembly is disposed inside the storage tank 4, the gas injection assembly is disposed on the right end of the storage tank 4, and the protective assembly is disposed on the outer wall of the storage tank 4; the sealing assembly includes a first threaded ring 101, a sealing cap 102, a sealing gasket 103, a second threaded ring 104, a sleeve 105, a first circular hole 106, and a desiccant 107; the first threaded ring 101 is fixedly connected to the upper end of the storage tank 4, and the sealing cap 102 is rotatably disposed on the outer wall of the first threaded ring 101, with the sealing cap 102 being disposed on the inner wall of the sealing cap 102. A sealing gasket 103 is fixedly connected to the end of the sealing cover 102. A second threaded ring 104 is fixedly connected to the top of the inner wall of the sealing cover 102. A sleeve 105 is rotatably provided on the outer wall of the second threaded ring 104. Multiple first circular holes 106 are opened through the lower end of the sleeve 105. Multiple desiccants 107 are placed on the inner wall of the sleeve 105. By providing a first threaded ring 101 at the upper end of the storage tank 4, the sealing cover 102 can be removed by rotation, which facilitates the replacement of the sealing gasket 103 at the top of the inner wall of the sealing cover 102. This prevents the sealing gasket 103 from aging and causing air to enter the storage tank 4. By providing a sleeve 105 at the top of the inner wall of the sealing cover 102 and placing desiccants 107 inside the sleeve 105, the problem of moisture in the air reacting with the liquid in the storage tank 4 is solved.

[0023] Please see Figure 1In this embodiment, a support block 2 is fixedly connected to the upper end of the base plate 1, a support column 3 is fixedly connected to the upper end of the support block 2, the upper end of the support column 3 is fixedly connected to the lower end of the storage tank 4, a discharge pipe 5 is fixedly connected to the outer wall of the storage tank 4, a first solenoid valve 6 is fixedly connected to the discharge pipe 5, and a warning sign 7 is fixedly connected to the outer wall of the storage tank 4. By setting the warning sign 7, unauthorized personnel can be warned to touch the storage tank 4.

[0024] Please see Figure 3 In this embodiment, the gas injection assembly includes a first fixing plate 201, a gas storage tank 202, a delivery pipe 203, and a second solenoid valve 204. The first fixing plate 201 is fixed to the right side of the outer wall of the storage tank 4. The gas storage tank 202 is fixed to the upper end of the first fixing plate 201, and the delivery pipe 203 is fixed to the lower end of the gas storage tank 202. The other end of the delivery pipe 203 is located inside the storage tank 4. The second solenoid valve 204 is fixed to the end of the delivery pipe 203 near the storage tank 4. The inert gas in the gas storage tank 202 can be injected into the storage tank 4 through the delivery pipe 203, which can effectively isolate the liquid in the storage tank 4 and prevent it from contacting external substances.

[0025] Please see Figure 4 In this embodiment, the heating assembly includes a motor 301, a rotating rod 302, a stirring plate 303, a second circular hole 304, a temperature sensor 305, a fixing ring 306, a fixing hole 307, a heating rod 308, a first tank 309, and a water level gauge 310. The lower end of the storage tank 4 is fixedly connected to the motor 301. The output shaft of the motor 301 passes through the lower end of the storage tank 4 and is fixedly connected to the rotating rod 302. The outer wall of the rotating rod 302 is fixedly connected to the stirring plate 303. Multiple second circular holes 304 are formed at the front end of the stirring plate 303. The upper end of the rotating rod 302 is fixedly connected to the temperature sensor 305. The inner wall of the storage tank 4 is fixedly connected to the fixing ring 306. A fixing hole 307 is provided through the end of the storage tank 4, and a heating rod 308 is fixedly connected to the inner wall of the fixing hole 307. A first groove 309 is provided through the upper end of the fixing ring 306. A water level gauge 310 is fixedly connected to the inner wall of the storage tank 4. The water level gauge 310 is located inside the first groove 309. The rotating shaft is driven by the motor 301 to rotate, so that the stirring plate 303 can evenly distribute heat during the heating process and prevent local overheating or undercooling of the liquid. This can avoid the thermal decomposition or damage of tetrahydrophthalic anhydride due to local overheating during the heating process. By setting the water level gauge 310, the volume of liquid in the storage tank 4 can be detected in real time to prevent the heating rod 308 from burning dry.

[0026] Please see Figure 5In this embodiment, the protective assembly includes a circular pipe 401, a smoke detector 402, a branch pipe 403, a nozzle 404, a third solenoid valve 405, a connecting pipe 406, and a dry powder box 407. A circular pipe 401 is fixedly connected to the outer wall of the storage tank 4. A smoke detector 402 is fixedly connected to the outer wall of the circular pipe 401. A branch pipe 403 is fixedly connected to the lower end of the circular pipe 401. A nozzle 404 is fixedly connected to the lower end of the branch pipe 403. A third solenoid valve 405 is fixedly connected to the branch pipe 403. Valve 405, connecting pipe 406 is fixedly connected to the right side of the outer wall of the annular pipe 401, dry powder box 407 is fixedly connected to the upper end of the base plate 1, and the other end of the connecting pipe 406 is fixedly connected to the left end of the dry powder box 407. A smoke alarm 402 is installed so that an alarm can be sounded in time when a fire occurs near the storage tank 4, and the third solenoid valve 405 is opened through the control box 8 to spray dry powder through the nozzle 404 to extinguish the fire and prevent the liquid in the storage tank 4 from coming into contact with the fire and exploding.

[0027] Please see Figure 1 In this embodiment, a control box 8 is fixedly connected to the upper end of the dry powder box 407. A display screen 9 is provided at the front end of the control box 8. The temperature sensor 305, smoke alarm 402, water level gauge 310, heating rod 308, and third solenoid valve 405 are electrically connected to the control box 8. By providing the display screen 9, the temperature and volume of the liquid in the storage tank 4 can be detected in real time.

[0028] In use, first turn the sealing cap 102 to open it, then put the solid tetrahydrophthalic anhydride into the storage tank 4, and start the heating rod 308 and the motor 301. The heating rod 308 heats the solid tetrahydrophthalic anhydride to a suitable temperature to convert it into a liquid state. Driven by the motor 301, the rotating rod 302 drives the stirring plate 303 to rotate, which can avoid the problem of uneven heating of the solid tetrahydrophthalic anhydride. After the solid tetrahydrophthalic anhydride is completely converted into a liquid state, open the second solenoid valve 204 and inject the inert gas in the gas storage tank 202 into the storage tank 4 through the delivery pipe 203 to completely isolate the liquid tetrahydrophthalic anhydride. Then, put the desiccant 107 into the sleeve 105 and turn the sealing cap 102 to seal the storage tank 4, which solves the problem of air and moisture reacting with the liquid in the storage tank 4.

[0029] When the smoke alarm 402 detects a fire outside the storage tank 4, it can issue an alarm in time and open the third solenoid valve 405 through the control box 8, spraying dry powder through the nozzle 404 to extinguish the fire and prevent the liquid inside the storage tank 4 from coming into contact with the fire and exploding.

[0030] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present invention.

Claims

1. A sealed storage device for liquid tetrahydrophthalic anhydride, comprising a base plate (1); characterized in that: It also includes a storage tank (4), a sealing assembly, a heating assembly, an air injection assembly, and a protective assembly; the storage tank (4) is provided on the upper end of the base plate (1), the sealing assembly is provided on the upper end of the storage tank (4), the heating assembly is provided inside the storage tank (4), the air injection assembly is provided on the right end of the storage tank (4), and the protective assembly is provided on the outer wall of the storage tank (4). The sealing assembly includes a first threaded ring (101), a sealing cap (102), a sealing gasket (103), a second threaded ring (104), a sleeve (105), a first round hole (106), and a drying... Agent (107); The upper end of the storage tank (4) is fixedly connected to a first threaded ring (101), and a sealing cap (102) is rotatably provided on the outer wall of the first threaded ring (101). A sealing gasket (103) is fixedly connected to the top of the inner wall of the sealing cap (102). A second threaded ring (104) is fixedly connected to the top of the inner wall of the sealing cap (102). A sleeve (105) is rotatably provided on the outer wall of the second threaded ring (104). Multiple first round holes (106) are opened through the lower end of the sleeve (105). Multiple desiccants (107) are placed on the inner wall of the sleeve (105).

2. A sealed storage device for liquid tetrahydrophthalic anhydride according to claim 1, characterized in that: A support block (2) is fixed to the upper end of the base plate (1), a support column (3) is fixed to the upper end of the support block (2), the upper end of the support column (3) is fixed to the lower end of the storage tank (4), a discharge pipe (5) is fixed to the outer wall of the storage tank (4), a first solenoid valve (6) is fixed to the discharge pipe (5), and a warning sign (7) is fixed to the outer wall of the storage tank (4).

3. A sealed storage device for liquid tetrahydrophthalic anhydride according to claim 1, characterized in that: The gas injection assembly includes a first fixed plate (201), a gas storage tank (202), a delivery pipe (203), and a second solenoid valve (204). The first fixed plate (201) is fixed to the right side of the outer wall of the storage tank (4). The gas storage tank (202) is fixed to the upper end of the first fixed plate (201). The delivery pipe (203) is fixed to the lower end of the gas storage tank (202). The other end of the delivery pipe (203) is located inside the storage tank (4). The second solenoid valve (204) is fixed to the end of the delivery pipe (203) near the storage tank (4).

4. A sealed storage device for liquid tetrahydrophthalic anhydride according to claim 1, characterized in that: The heating assembly includes a motor (301), a rotating rod (302), a stirring plate (303), a second circular hole (304), a temperature sensor (305), a fixing ring (306), a fixing hole (307), a heating rod (308), a first tank (309), and a water level gauge (310). The lower end of the storage tank (4) is fixedly connected to the motor (301), the output shaft of the motor (301) passes through the lower end of the storage tank (4) and is fixedly connected to the rotating rod (302), the outer wall of the rotating rod (302) is fixedly connected to the stirring plate (303), the front end of the stirring plate (303) is provided with multiple second circular holes (304), and the upper end of the rotating rod (302) is fixedly connected to the temperature sensor (305).

5. A sealed storage device for liquid tetrahydrophthalic anhydride according to claim 4, characterized in that: A fixing ring (306) is fixedly connected to the inner wall of the storage tank (4). A fixing hole (307) is opened through the upper end of the fixing ring (306). A heating rod (308) is fixedly connected to the inner wall of the fixing hole (307). A first tank (309) is opened through the upper end of the fixing ring (306). A water level gauge (310) is fixedly connected to the inner wall of the storage tank (4). The water level gauge (310) is located inside the first tank (309).

6. A sealed storage device for liquid tetrahydrophthalic anhydride according to claim 1, characterized in that: The protective components include a circular pipe (401), a smoke alarm (402), a branch pipe (403), a nozzle (404), a third solenoid valve (405), a connecting pipe (406), and a dry powder box (407); the storage tank (4) is fixed to the outer wall of the circular pipe (4), the smoke alarm (402) is fixed to the outer wall of the circular pipe (401), the branch pipe (403) is fixed to the lower end of the circular pipe (401), the nozzle (404) is fixed to the lower end of the branch pipe (403), the third solenoid valve (405) is fixed to the branch pipe (403), the connecting pipe (406) is fixed to the right side of the outer wall of the circular pipe (401), the dry powder box (407) is fixed to the upper end of the base plate (1), and the other end of the connecting pipe (406) is fixed to the left end of the dry powder box (407).

7. A sealed storage device for liquid tetrahydrophthalic anhydride according to claim 6, characterized in that: A control box (8) is fixedly connected to the upper end of the dry powder box (407). A display screen (9) is set at the front end of the control box (8). A temperature sensor (305), a smoke alarm (402), a water level gauge (310), a heating rod (308), and a third solenoid valve (405) are electrically connected to the control box (8).

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