High-sealing storage device for methyl methacrylate production

Abstract

The utility model relates to the field of methyl methacrylate production industry, in particular to a high-sealing storage device for methyl methacrylate production. The technical problems that a conventional storage device is poor in sealing performance, extremely volatile methyl methacrylate is difficult to effectively store, and meanwhile the conventional storage device is difficult to monitor leakage of the methyl methacrylate and take corresponding measures are solved. According to the technical scheme, the high-sealing storage device for methyl methacrylate production comprises a bearing assembly, an outer tank assembly, an anti-leakage assembly, an adsorption assembly and an inner tank assembly. Methyl methacrylate is stored in the inner tank, the outer tank is arranged outside to serve as an outer protection structure, the combustible gas detector is arranged in the buffer space formed between the outer tank body and the inner tank body, and when leakage is monitored, the controller automatically starts the centrifugal air pump, so that the leakage of methyl methacrylate is avoided. And the gaseous methyl methacrylate is conveyed into an activated carbon plate for adsorption treatment, so that the problems are solved.

Description

Technical Field

[0001] The utility model belongs to the field of methyl methacrylate production industry, and specifically relates to a high-sealing storage device used for methyl methacrylate production. Background Art

[0002] In the methyl methacrylate production industry, methyl methacrylate is an important organic chemical raw material, which is widely used in polymer synthesis, coatings, adhesives, transparent plastic products and other fields. Methyl methacrylate needs to be properly preserved during storage. The chemical properties of methyl methacrylate are extremely unstable. It is in liquid state at room temperature, easily volatilized by heat, flammable and explosive, and has moderate toxicity. In the prior art, conventional storage of methyl methacrylate often directly uses galvanized iron barrels or aluminum cylinders for packaging, which has poor airtightness. Methyl methacrylate is easy to escape from the gaps in the interface, and it is difficult to achieve long-term effective storage. At the same time, conventional storage devices are difficult to monitor the leakage of methyl methacrylate, and it is often found that it has already caused harm to the surrounding production personnel. Therefore, a high-sealing storage device for methyl methacrylate production is proposed to solve the above-mentioned problems. Utility Model Content

[0003] In order to overcome the problem that during the storage of methyl methacrylate, conventional storage devices have poor sealing properties and are difficult to effectively store the highly volatile methyl methacrylate. At the same time, conventional storage devices are difficult to monitor the leakage of methyl methacrylate and take corresponding measures.

[0004] The technical solution of the utility model is: a highly sealed storage device for the production of methyl methacrylate, comprising a bearing assembly, an outer tank assembly, an anti-leakage assembly, an adsorption assembly and an inner tank assembly; an outer tank assembly for providing outer layer protection is arranged at the upper end of the bearing assembly; an anti-leakage assembly for preventing leakage is arranged on the outer tank assembly; an adsorption assembly for adsorbing leaked gas is arranged inside the bearing assembly; and an inner tank assembly for storage is arranged inside the outer tank assembly.

[0005] Preferably, the provision of the carrier component helps to achieve convenient transportation of the device, the provision of the inner tank component provides a tighter sealing structure, which can effectively prevent the volatilization of methyl methacrylate, and the provision of the outer tank component, as an external protective structure of the inner tank component, prevents external impact from causing damage to the inner tank component while providing a buffer space in the event of methyl methacrylate leakage, thereby solving the problem that conventional storage devices have poor sealing properties and are difficult to effectively store the highly volatile methyl methacrylate. The provision of the anti-leakage component and the adsorption component allows the gaseous methyl methacrylate in the carrier component to be introduced into the adsorption component for absorption treatment through the anti-leakage component when a leakage is detected, thereby avoiding serious consequences caused by the leakage of methyl methacrylate, thereby solving the problem that conventional storage devices are difficult to detect the leakage of methyl methacrylate and take corresponding measures.

[0006] Preferably, the carrying assembly includes a box body, a cover plate, bottom wheels and an audible and visual alarm; the front end of the box body is open; a cover plate is hinged at the lower edge of the front end of the box body; the cover plate and the box body are adapted to each other; bottom wheels are fixedly connected to the four corner edges of the lower end of the box body; an audible and visual alarm is fixedly connected to the upper end of the box body; the provision of the bottom wheels facilitates the convenient transportation of the device.

[0007] Preferably, the outer tank assembly comprises an outer tank body, a first airtight cover, a sealing groove, a first sealing block, a first screw groove, a stud, a handle and a shock absorber; the outer tank body is fixedly connected to the upper end of the box body; the upper end of the outer tank body is open; the first airtight cover is hinged at the left edge of the upper end of the outer tank body; the first airtight cover is adapted to the outer tank body; a sealing groove is provided at the upper end of the outer tank body; the first sealing block is fixedly connected to the lower end of the first airtight cover; the first sealing block is adapted to the sealing groove; the first screw groove is penetrated through the upper and lower ends of the first airtight cover; the inner wall of the first screw groove is threadedly installed with a stud; the upper end of the stud is fixedly connected to the handle; the fixed end of the shock absorber is fixedly connected to the lower end surface of the inner part of the outer tank body; the first airtight cover is hingedly connected through the upper end of the outer tank body, the first sealing block is adapted to the sealing groove, the first sealing block is made of rubber, which can effectively prevent methyl methacrylate from leaking from the interface between the outer tank body and the first airtight cover, and at the same time can prevent dust and impurities from entering and causing pollution.

[0008] Preferably, the leakage prevention component includes a support block, a centrifugal air pump, an air pipe and a controller; the support block is fixedly connected to the outer wall of the outer tank body; the centrifugal air pump is fixedly connected to the upper end of the support block; the air inlet end of the centrifugal air pump is fixedly installed on the outer wall of the outer tank body in a through-type manner; the air outlet end of the centrifugal air pump is threadedly installed with an air pipe; the other end of the air pipe is threadedly installed on the box body; the internal spaces of the box body, the air pipe, the centrifugal air pump and the outer tank body are connected; the provision of the centrifugal air pump helps to extract the gaseous methyl methacrylate accumulated in the gap between the outer tank body and the inner tank body through the centrifugal air pump to the outside for treatment when methyl methacrylate leaks, thereby preventing the high concentration of gaseous methyl methacrylate from causing harm to the maintenance personnel when the first sealing cover is opened.

[0009] Preferably, the adsorption assembly includes a clamping block, an activated carbon plate and a pull hole; the left and right end surfaces inside the box are fixedly connected to a plurality of clamping blocks symmetrically distributed about the center of the box; an activated carbon plate is slidably arranged between every two groups of clamping blocks located in the same plane; pull holes are penetrated through the front edges of the upper and lower ends of the activated carbon plate; through the setting of the activated carbon plate, the activated carbon has a high pore structure and surface area, which can effectively adsorb methyl methacrylate molecules, and the plate-type design of the activated carbon plate ensures sufficient contact area and adsorption effect to prevent gaseous methyl methacrylate from diffusing into the external environment. At the same time, an activated carbon plate is slidably arranged inside the box to facilitate its quick disassembly and replacement.

[0010] Preferably, the inner tank assembly includes an inner tank body, an external thread, a second airtight cover, a connecting column, a second screw groove, an internal thread, a second sealing block and a combustible gas detector; the inner tank body is slidably arranged on the inner wall of the outer tank body; the upper end of the inner tank body is open; the lower end of the inner tank body is fitted with the output end of the shock absorber; an external thread is provided on the upper outer wall of the inner tank body; the second airtight cover is threadedly installed on the upper end of the inner tank body; the lower end of the second airtight cover is open; an internal thread is provided on the inner wall of the second airtight cover; the internal thread is adapted to the external thread; a connecting column is fixedly connected to the upper end of the second airtight cover; a second screw groove is provided on the upper end of the connecting column; a stud is threadedly installed on the inner wall of the second screw groove; a second sealing block is fixedly connected to the upper end surface inside the second airtight cover; the outer wall of the second sealing block is fitted with the inner wall of the inner tank body; the inner tank body and the second airtight cover are made of stainless steel, which has good corrosion resistance The sealing performance can effectively reduce the volatilization of methyl methacrylate and the influence of the external environment on it. The lower end of the inner tank body is fitted with the output end of the shock absorber, which helps to protect the inner tank body from being affected when the outer tank body is subjected to external impact. The second sealing cover is threadedly installed on the upper end of the inner tank body to achieve preliminary sealing of the liquid methyl methacrylate inside the inner tank body. The outer wall of the second sealing block is fitted with the inner wall of the inner tank body to effectively prevent the methyl methacrylate volatilized into gaseous state from overflowing from the gap between the second sealing cover and the inner tank body. The stud is threadedly installed on the second screw groove and the inner wall of the first screw groove to achieve a stable connection between the first sealing cover and the second sealing cover, while enhancing the overall stability of the structure. At the same time, secondary sealing of the inner tank body is achieved, solving the problem that conventional storage devices have poor sealing performance and are difficult to effectively store methyl methacrylate, which is highly volatile.

[0011] Preferably, the lower end of the second sealed cover is fixedly connected with combustible gas detectors evenly distributed in a circle; the combustible gas detectors, centrifugal air pump and sound and light alarm are electrically connected to the controller; the combustible gas detectors evenly distributed in a circle are fixedly connected through the lower end of the second sealed cover, and the combustible gas detectors are located near the interface between the inner tank body and the second sealed cover. When methyl methacrylate leaks, due to the instability of methyl methacrylate, the leaked liquid methyl methacrylate will quickly evaporate into gas, and the combustible gas detector will immediately detect the leakage and send a signal to the controller. The controller will automatically start the centrifugal air pump to extract the gaseous methyl methacrylate inside the outer tank body and pass it into the interior of the box to be absorbed by the activated carbon plate to prevent the leakage of methyl methacrylate. At the same time, the sound and light alarm will also be started, and the alarm will remind nearby operators to take precautions and response measures as soon as possible, thereby solving the problem that conventional storage devices are difficult to monitor the leakage of methyl methacrylate and take corresponding measures.

[0012] Beneficial effects of the utility model:

[0013] 1. The second sealing cover is threadedly installed on the upper end of the inner tank body to achieve preliminary sealing of the liquid methyl methacrylate inside the inner tank body. The outer wall of the second sealing block is fitted with the inner wall of the inner tank body, which can effectively prevent the methyl methacrylate volatilized into gaseous state from overflowing from the gap between the second sealing cover and the inner tank body. The stud is threadedly installed on the second screw groove and the inner wall of the first screw groove to achieve a stable connection between the first sealing cover and the second sealing cover, while enhancing the overall stability of the structure and achieving secondary sealing of the inner tank body, solving the problem that the conventional storage device has poor sealing performance and is difficult to effectively store the highly volatile methyl methacrylate;

[0014] 2. When methyl methacrylate leaks, the combustible gas detector will immediately detect the leakage and send a signal to the controller. The controller will automatically start the centrifugal air pump to extract the gaseous methyl methacrylate inside the outer tank and pass it into the inside of the box to be absorbed by the activated carbon plate to prevent the leakage of methyl methacrylate. At the same time, the sound and light alarm will also be activated to alert nearby operators to take preventive and response measures as soon as possible, solving the problem that conventional storage devices are difficult to detect the leakage of methyl methacrylate and take corresponding measures;

[0015] 3. Through the setting of activated carbon plate, activated carbon has a highly porous structure and surface area, which can effectively adsorb methyl methacrylate molecules. The activated carbon plate is designed to ensure sufficient contact area and adsorption effect to prevent gaseous methyl methacrylate from diffusing into the external environment. At the same time, the activated carbon plate is set through the internal sliding of the box, which is convenient for quick disassembly and replacement. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 Shown is a three-dimensional schematic diagram of a high-sealing storage device for methyl methacrylate production according to the utility model;

[0017] Figure 2 What is shown is a schematic diagram of a front view cross-section stereoscopic structure of a highly sealed storage device for the production of methyl methacrylate according to the utility model;

[0018] Figure 3 The three-dimensional structure schematic diagram of a bearing component, an outer tank component, an anti-leakage component and an adsorption component of a high-sealing storage device for methyl methacrylate production according to the utility model is shown;

[0019] Figure 4 The schematic diagram of the partial cross-section of the three-dimensional structure of the outer tank assembly of a highly sealed storage device for the production of methyl methacrylate according to the utility model is presented;

[0020] Figure 5The first three-dimensional structural schematic diagram of the inner tank assembly of a highly sealed storage device for methyl methacrylate production according to the utility model is shown;

[0021] Figure 6 Shown is a second three-dimensional structural schematic diagram of an inner tank assembly of a high-sealing storage device for the production of methyl methacrylate according to the utility model.

[0022] The marks in the accompanying drawings are: 1-bearing assembly, 101-box, 102-cover plate, 103-bottom wheel, 104-sound and light alarm, 2-outer tank assembly, 201-outer tank body, 202-first airtight cover, 203-sealing groove, 204-first sealing block, 205-first screw groove, 206-stud, 207-screw handle, 208-shock absorber, 3-anti-leakage assembly, 301-support block, 302-centrifugal air pump, 303-gas pipe, 304-controller, 4-adsorption assembly, 401-clamping block, 402-activated carbon plate, 403-pull hole, 5-inner tank assembly, 501-inner tank body, 502-external thread, 503-second airtight cover, 504-connecting column, 505-second screw groove, 506-internal thread, 507-second sealing block, 508-combustible gas detector. DETAILED DESCRIPTION

[0023] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0024] See also Figure 1 and 2 The utility model provides an embodiment: a highly sealed storage device for the production of methyl methacrylate, comprising a bearing assembly 1, an outer tank assembly 2, an anti-leakage assembly 3, an adsorption assembly 4 and an inner tank assembly 5; the upper end of the bearing assembly 1 is provided with an outer tank assembly 2 for providing outer layer protection; the outer tank assembly 2 is provided with an anti-leakage assembly 3 for preventing leakage; the interior of the bearing assembly 1 is provided with an adsorption assembly 4 for adsorbing leaked gas; the interior of the outer tank assembly 2 is provided with an inner tank assembly 5 for storage.

[0025] See also Figure 3In this embodiment, the bearing assembly 1 includes a box body 101, a cover plate 102, a bottom wheel 103 and an audible and visual alarm 104; the front end of the box body 101 is open; the cover plate 102 is hinged at the lower side edge of the front end of the box body 101; the cover plate 102 is adapted to the box body 101; the bottom wheels 103 are fixedly connected to the four corner edges of the lower end of the box body 101; the upper end of the box body 101 is fixedly connected to the audible and visual alarm 104; the anti-leakage assembly 3 includes a support block 301, a centrifugal air pump 302, an air delivery pipe 303 and a controller 304; the outer wall of the outer tank body 201 is fixedly connected to the support block 301; the upper end of the support block 301 is fixedly connected to the centrifugal air pump 302; the air inlet end of the centrifugal air pump 302 penetrates The centrifugal air pump 302 is fixedly mounted on the outer wall of the outer tank body 201; the air outlet end of the centrifugal air pump 302 is threadedly mounted with an air pipe 303; the other end of the air pipe 303 is threadedly mounted on the box body 101; the internal spaces of the box body 101, the air pipe 303, the centrifugal air pump 302 and the outer tank body 201 are connected; the adsorption component 4 includes a clamping block 401, an activated carbon plate 402 and a pulling hole 403; the left and right end surfaces inside the box body 101 are fixedly connected with a plurality of clamping blocks 401 symmetrically distributed about the center of the box body 101; an activated carbon plate 402 is slidably arranged between every two groups of clamping blocks 401 located in the same plane; a pulling hole 403 is penetrated through the front side edges of the upper and lower ends of the activated carbon plate 402.

[0026] See also Figure 3 and 4 In this embodiment, the outer tank assembly 2 includes an outer tank body 201, a first sealing cover 202, a sealing groove 203, a first sealing block 204, a first screw groove 205, a stud 206, a handle 207 and a shock absorber 208; the upper end of the box body 101 is fixedly connected to the outer tank body 201; the upper end of the outer tank body 201 is open; the first sealing cover 202 is hinged at the left edge of the upper end of the outer tank body 201; the first sealing cover 202 is adapted to the outer tank body 201 A sealing groove 203 is provided at the upper end of the outer tank body 201; a first sealing block 204 is fixedly connected to the lower end of the first sealing cover 202; the first sealing block 204 is adapted to the sealing groove 203; first screw grooves 205 are provided through the upper and lower ends of the first sealing cover 202; a stud 206 is threadedly installed on the inner wall of the first screw groove 205; a handle 207 is fixedly connected to the upper end of the stud 206; a fixed end of a shock absorber 208 is fixedly connected to the lower end surface inside the outer tank body 201.

[0027] See also Figure 5 and Figure 6In this embodiment, the inner tank assembly 5 includes an inner tank body 501, an external thread 502, a second airtight cover 503, a connecting column 504, a second screw groove 505, an internal thread 506, a second sealing block 507 and a combustible gas detector 508; the inner tank body 501 is slidably arranged on the inner wall of the outer tank body 201; the upper end of the inner tank body 501 is open; the lower end of the inner tank body 501 is fitted with the output end of the shock absorber 208; the upper outer wall of the inner tank body 501 is provided with an external thread 502; the upper end of the inner tank body 501 is threadedly installed with a second airtight cover 503; the lower end of the second airtight cover 503 is open; the inner wall of the second airtight cover 503 An internal thread 506 is provided; the internal thread 506 is matched with the external thread 502; a connecting column 504 is fixedly connected to the upper end of the second airtight cover 503; a second screw groove 505 is provided at the upper end of the connecting column 504; a stud 206 is threadedly installed on the inner wall of the second screw groove 505; a second sealing block 507 is fixedly connected to the upper end surface inside the second airtight cover 503; the outer wall of the second sealing block 507 fits with the inner wall of the inner tank body 501; a circumferentially evenly distributed combustible gas detector 508 is fixedly connected to the lower end of the second airtight cover 503; the combustible gas detector 508, the centrifugal air pump 302 and the sound and light alarm 104 are electrically connected to the controller 304.

[0028] During operation, methyl methacrylate is first added into the inner tank body 501, and the second sealing cover 503 is threadedly installed on the upper end of the inner tank body 501, so that the outer wall of the second sealing block 507 fits with the inner wall of the inner tank body 501, forming a highly sealed storage environment;

[0029] Next, the inner tank 501 is placed on the output end of the shock absorber 208, and the first airtight cover 202 is rotated to close so that the first sealing block 204 fits the sealing groove 203, and then the stud 206 is threadedly installed on the inner wall of the first screw groove 205 and the second screw groove 505 by turning the handle 207 to achieve a stable connection between the first airtight cover 202 and the second airtight cover 503;

[0030] When methyl methacrylate leaks, due to the instability of methyl methacrylate, the leaked liquid methyl methacrylate will quickly evaporate into gas, and the combustible gas detector 508 will immediately detect the leakage and send a signal to the controller 304. The controller 304 will automatically start the centrifugal air pump 302 to extract the gaseous methyl methacrylate inside the outer tank 201 and pass it into the interior of the box 101 to be absorbed and processed by the activated carbon plate 402 to prevent the leakage of methyl methacrylate. At the same time, the sound and light alarm 104 will also be started, and the alarm will remind nearby operators to take precautions and response measures as soon as possible.

[0031] Through the above steps, the configuration of the carrier component 1 helps to achieve convenient transportation of the device. The configuration of the inner tank component 5 provides a tighter sealing structure, which can effectively prevent the volatilization of methyl methacrylate. The configuration of the outer tank component 2, as the external protection structure of the inner tank component 5, prevents the inner tank component 5 from being damaged by external impacts, and provides a buffer space when methyl methacrylate leaks, thereby solving the problem that conventional storage devices have poor sealing and are difficult to effectively store highly volatile methyl methacrylate. The configuration of the anti-leakage component 3 and the adsorption component 4 allows the gaseous methyl methacrylate in the carrier component 1 to be introduced into the adsorption component 4 for absorption treatment through the anti-leakage component 3 when a leakage is detected, thereby avoiding serious consequences caused by the leakage of methyl methacrylate, thereby solving the problem that conventional storage devices are difficult to detect the leakage of methyl methacrylate and take corresponding measures.

[0032] The embodiments of the present invention are described in detail above in conjunction with the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge scope of those skilled in the art without departing from the purpose of the present invention.

Claims

1. A highly sealed storage device for the production of methyl methacrylate, comprising a bearing assembly (1); characterized in that: The invention also comprises an outer tank component (2), an anti-leakage component (3), an adsorption component (4) and an inner tank component (5); the upper end of the carrier component (1) is provided with an outer tank component (2) for providing outer layer protection; the outer tank component (2) is provided with an anti-leakage component (3) for preventing leakage; the interior of the carrier component (1) is provided with an adsorption component (4) for adsorbing leaked gas; and the interior of the outer tank component (2) is provided with an inner tank component (5) for storage.

2. A highly sealed storage device for methyl methacrylate production according to claim 1, characterized in that: The bearing assembly (1) comprises a box body (101), a cover plate (102), a bottom wheel (103) and an audible and visual alarm (104); the front end of the box body (101) is open; the cover plate (102) is hingedly connected to the lower edge of the front end of the box body (101); the cover plate (102) and the box body (101) are adapted to each other; the bottom wheels (103) are fixedly connected to the four corner edges of the lower end of the box body (101); and the audible and visual alarm (104) is fixedly connected to the upper end of the box body (101).

3. A highly sealed storage device for methyl methacrylate production according to claim 2, characterized in that: The outer tank assembly (2) comprises an outer tank body (201), a first sealing cover (202), a sealing groove (203), a first sealing block (204), a first screw groove (205), a stud (206), a handle (207) and a shock absorber (208); the upper end of the box body (101) is fixedly connected to the outer tank body (201); the upper end of the outer tank body (201) is open; the first sealing cover (202) is hingedly connected to the left edge of the upper end of the outer tank body (201); the first sealing cover (202) is adapted to the outer tank body (201); the outer A sealing groove (203) is provided at the upper end of the tank body (201); a first sealing block (204) is fixedly connected to the lower end of the first sealing cover (202); the first sealing block (204) is matched with the sealing groove (203); first screw grooves (205) are provided through the upper and lower ends of the first sealing cover (202); a stud (206) is threadedly installed on the inner wall of the first screw groove (205); a handle (207) is fixedly connected to the upper end of the stud (206); and a fixed end of a shock absorber (208) is fixedly connected to the lower end surface inside the outer tank body (201).

4. A highly sealed storage device for methyl methacrylate production according to claim 3, characterized in that: The anti-leakage component (3) comprises a support block (301), a centrifugal air pump (302), an air pipe (303) and a controller (304); the support block (301) is fixedly connected to the outer wall of the outer tank body (201); the centrifugal air pump (302) is fixedly connected to the upper end of the support block (301); the air inlet end of the centrifugal air pump (302) is fixedly installed on the outer wall of the outer tank body (201) in a through-type manner; the air pipe (303) is threadedly installed on the air outlet end of the centrifugal air pump (302); the other end of the air pipe (303) is threadedly installed on the box body (101); and the internal spaces of the box body (101), the air pipe (303), the centrifugal air pump (302) and the outer tank body (201) are connected.

5. A highly sealed storage device for methyl methacrylate production according to claim 2, characterized in that: The adsorption assembly (4) comprises a clamping block (401), an activated carbon plate (402) and a pull hole (403); the left and right end surfaces inside the box body (101) are fixedly connected to a plurality of clamping blocks (401) symmetrically distributed about the center of the box body (101); an activated carbon plate (402) is slidably arranged between each two groups of clamping blocks (401) located in the same plane; and the pull holes (403) are penetrated through the front side edges of the upper and lower ends of the activated carbon plate (402).

6. A highly sealed storage device for methyl methacrylate production according to claim 3, characterized in that: The inner tank assembly (5) comprises an inner tank body (501), an external thread (502), a second sealing cover (503), a connecting column (504), a second screw groove (505), an internal thread (506), a second sealing block (507) and a combustible gas detector (508); the inner tank body (501) is slidably arranged on the inner wall of the outer tank body (201); the upper end of the inner tank body (501) is open; the lower end of the inner tank body (501) is fitted with the output end of the shock absorber (208); the upper outer wall of the inner tank body (501) is provided with an external thread (502); the upper end of the inner tank body (501) is threadedly installed with a second sealing block (507) The second sealed cover (503) is provided with an inner thread (506) on its inner wall; the inner thread (506) matches the outer thread (502); the upper end of the second sealed cover (503) is fixedly connected with a connecting column (504); the upper end of the connecting column (504) is provided with a second screw groove (505); the inner wall of the second screw groove (505) is threadedly mounted with a stud (206); the upper end surface of the second sealed cover (503) is fixedly connected with a second sealing block (507); the outer wall of the second sealing block (507) is in contact with the inner wall of the inner tank body (501).

7. A highly sealed storage device for methyl methacrylate production according to claim 6, characterized in that: The lower end of the second sealed cover (503) is fixedly connected to combustible gas detectors (508) evenly distributed in a circumference; the combustible gas detectors (508), the centrifugal air pump (302) and the sound and light alarm (104) are electrically connected to the controller (304).

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