Explosion-proof reaction kettle overpressure automatic relief device for chemical production

Abstract

The invention relates to the technical field of pressure relief of reaction kettles, and discloses an explosion-proof reaction kettle overpressure automatic relief device for chemical production, which comprises a reaction kettle and a pressure relief assembly, an outer pipe extending to the top of the reaction kettle is fixedly mounted on the inner top wall of the reaction kettle, and a connecting mechanism is movably mounted on the inner top wall of the outer pipe; the pressure relief assembly is arranged on the inner side of the outer pipe and extends to the top of the connecting mechanism, fixing mechanisms connected with the connecting mechanism are arranged on the left side and the right side of the outer pipe correspondingly, a bottom plate is fixedly installed on the right side of the reaction kettle, and a processing mechanism connected with the top of the reaction kettle is arranged on the top of the bottom plate; the right side of the inner wall of the outer pipe is fixedly provided with a pressure relief pipe extending to the inner side of the treatment mechanism, according to the automatic overpressure relief device for the explosion-proof reaction kettle for chemical production, by arranging the fixing mechanism and the connecting mechanism, the purpose of convenient disassembly is achieved, and by arranging the treatment mechanism, the purpose of gas treatment is achieved.

Description

Technical Field

[0001] This invention relates to the field of reactor pressure relief technology, specifically to an automatic overpressure relief device for an explosion-proof reactor used in chemical production. Background Technology

[0002] A search revealed Chinese Patent Publication No. CN215464325U, which discloses an automatic pressure relief device for a chemical reactor, including a reactor body and a pressure pipe connected to the top of the reactor body. This automatic pressure relief device for chemical reactors facilitates automatic and manual pressure relief, improves the performance of the chemical reactor, and allows for easy adjustment of the pressure and speed of pressure relief, thus enhancing its applicability. However, the existing technical solutions described above have the following drawbacks: some gases discharged from the reactor are at high temperatures or may produce a pungent odor; there is no corresponding gas treatment structure; direct discharge of gases from the reactor may burn operators or cause environmental pollution and adverse effects on the health of operators; and the integrated installation method sometimes causes damage to the cylinder and other structures due to large impacts during pressure relief, requiring replacement, but the integrated structure is not convenient for disassembly and replacement, affecting the pressure relief of the reactor. Therefore, this paper proposes an automatic overpressure relief device for explosion-proof reactors used in chemical production to solve the above-mentioned problems. Summary of the Invention

[0003] (a) Technical problems to be solved

[0004] To address the shortcomings of existing technologies, this invention provides an automatic overpressure relief device for explosion-proof reactors used in chemical production. This device has the advantages of having a gas handling structure and being easy to disassemble, thus solving the problems mentioned in the background section.

[0005] (II) Technical Solution

[0006] To achieve the aforementioned purpose of having a gas treatment structure and facilitating disassembly, the present invention provides the following technical solution: an explosion-proof reaction vessel overpressure automatic relief device for chemical production, comprising a reaction vessel and a pressure relief assembly, wherein an outer pipe extending to the top of the inner top wall of the reaction vessel is fixedly installed, a connecting mechanism is movably installed on the inner top wall of the outer pipe, the pressure relief assembly is disposed inside the outer pipe and extends to the top of the connecting mechanism, and fixing mechanisms connected to the connecting mechanism are provided on both the left and right sides of the outer pipe, a base plate is fixedly installed on the right side of the reaction vessel, a treatment mechanism connected to the top of the reaction vessel is provided on the top of the base plate, and a pressure relief pipe extending to the inside of the treatment mechanism is fixedly installed on the right side of the inner wall of the outer pipe;

[0007] The connecting mechanism includes a top cover, on which the top of the outer tube is movably mounted, and on the inner side of the top cover is a sealing plate that fits against the inner side of the outer tube.

[0008] Preferably, the pressure relief assembly includes a bottom ring, a bottom ring is fixedly installed on the inner bottom wall of the outer tube, an outer cylinder extending to the inner side of the outer tube is fixedly installed on the top of the top cover, a slider extending to its bottom is slidably installed on the inner side of the outer cylinder, a circular plate is fixedly installed on the bottom of the slider, an installation cylinder is fixedly installed on the bottom of the circular plate, a movable column extending to its bottom is slidably installed on the inner side of the installation cylinder, a cover cylinder is fixedly installed on the bottom of the movable column, a telescopic spring sleeved on the outside of the installation cylinder and the movable column is fixedly installed between the circular plate and the cover cylinder, and a part that fits against the bottom ring is fixedly installed on the bottom of the cover cylinder. The sealing ring has a vertical plate fixedly installed on the top of the slider, extending to the top of the outer cylinder. A handle is fixedly installed on the top of the vertical plate. Grooves are opened on both the left and right sides of the vertical plate. Movable plates are slidably installed on the front and rear sides of the inner wall of the groove. A locking block extending to the outside of the groove is fixedly installed between the front and rear movable plates. One end of the locking block is engaged with the outer cylinder. A fixing spring fixedly connected to the inner wall of the groove is fixedly installed on one side of the locking block. A pull rope passing through the fixing spring and extending to the top of the vertical plate is fixedly installed on one side of the locking block. A pull rod is fixedly installed between the tops of the two pull ropes.

[0009] Preferably, the fixing mechanism includes an outer box, with outer boxes fixedly installed on both the left and right sides of the outer tube, located below the top cover. A support rod is fixedly installed between the front and rear sides of the inner wall of the outer box. A swing plate extending to the top of the outer box is rotatably connected to the outer side of the support rod. A return spring fixedly connected to the inner wall of the outer box is fixedly installed on the side of the swing plate away from the top cover. A wedge-shaped block that fits against the top of the top cover is fixedly installed on the top of the swing plate. A pressure plate extending to the bottom of the outer box is fixedly installed on the bottom of the swing plate.

[0010] Preferably, the processing mechanism includes a processing box, which is fixedly installed on the top of the base plate and fixedly connected to the top of the reactor. The other end of the pressure relief pipe extends to the inside of the processing box. A processing container is fixedly installed on the left side of the inner bottom wall of the processing box. A stabilizing plate is fixedly installed on the inner top wall of the processing container. A connecting pipe is fixedly installed on the right side of the pressure relief pipe, penetrating and extending to the bottom of the stabilizing plate. An inlet pipe extending to the inside of the processing container is fixedly installed on the top of the processing box. A drain pipe extending to the front of the processing box is fixedly installed on the front side of the inner wall of the processing container. A discharge pipe extending to the right side of the inner wall of the processing box is fixedly installed on the right side. Mounting frames are fixedly installed on both the front and rear sides of the inner wall of the processing box. A filter plate is movably installed between the two mounting frames. A horizontal plate extending to the top of the processing box is fixedly installed on the top of the filter plate. A U-shaped rod is fixedly installed on the top of the horizontal plate.

[0011] Preferably, the inner top wall of the treatment box is designed to be open, the inner side of the treatment box is filled with treatment liquid, and the inner top wall of the treatment box is provided with mounting holes that are compatible with the horizontal plate.

[0012] Preferably, the inner wall of the outer tube is open on both the upper and lower sides, the inner top wall of the reactor is provided with a mounting hole adapted to the outer tube, the inner side of the top cover is provided with a circular hole adapted to the outer cylinder, and the inner side of the sealing plate is provided with a through hole adapted to the outer cylinder.

[0013] Preferably, the inner bottom wall of the cover cylinder is designed to be open, and the inner walls of the outer cylinder are provided with locking holes on both the left and right sides to match the locking blocks. There are four locking holes on each side, which are evenly distributed from top to bottom. The inner side of the vertical plate is provided with a through hole to match the pull rope, and the outer side of the pull rod is covered with a sponge sleeve.

[0014] Preferably, the top of the wedge block is inclined, the two wedge blocks are symmetrically distributed, the inner walls of the outer box are open on both the top and bottom sides, and a sponge pad is provided on the outer side of the pressure plate.

[0015] Preferably, a scale is provided on the right side of the outer cylinder, a circular groove is provided on the inner side of the mounting cylinder to match the moving trajectory of the moving column, and a protective sleeve is wrapped around the outside of the handle.

[0016] (III) Beneficial Effects

[0017] Compared with the prior art, the present invention provides an automatic overpressure relief device for explosion-proof reactors used in chemical production, which has the following advantages:

[0018] 1. This explosion-proof reactor for chemical production uses an automatic overpressure relief device. By setting up a fixing mechanism and a connecting mechanism, the top cover and sealing plate in the connecting mechanism are tightly fitted with the outer pipe to enhance the overall sealing performance. The wedge block and swing plate in the fixing mechanism are tightly pressed against the top of the top cover under the action of the return spring to prevent the top cover from opening accidentally during the reaction process. If disassembly and replacement are required, simply press the pressure plates on both sides to make the swing plate tilt against the force of the return spring, which can drive the wedge block to move and release its restriction on the top cover, thus achieving the purpose of easy disassembly.

[0019] 2. This explosion-proof reactor overpressure automatic relief device for chemical production uses a processing mechanism. Gas or liquid entering the processing mechanism first enters the processing chamber, then flows through a connecting pipe into the processing box. The processing box contains a processing liquid. The gas reacts chemically or is physically absorbed by the processing liquid, reducing its harmfulness or corrosiveness. The treated gas flows out from the top of the processing box and enters the processing chamber, where a filter plate further filters the treated gas to remove impurities and particulate matter. Finally, the treated and filtered gas exits the processing chamber through a discharge pipe, thus achieving the purpose of gas treatment. Attached Figure Description

[0020] Figure 1 This is a three-dimensional view of the structure of the present invention;

[0021] Figure 2 This is a left-side sectional perspective view of a partial structure of the present invention;

[0022] Figure 3 This is a perspective view of a partial structure of the present invention, viewed from the left and from below.

[0023] Figure 4 This is a left-side sectional perspective view of a partial structure of the present invention;

[0024] Figure 5 This is a left-side sectional perspective view of a partial structure of the present invention;

[0025] Figure 6 This is a left-side sectional perspective view of a partial structure of the present invention;

[0026] Figure 7 This is a left-side sectional perspective view of a partial structure of the present invention;

[0027] Figure 8 This is a perspective cross-sectional view of a portion of the structure of the present invention;

[0028] Figure 9 This is a three-dimensional cross-sectional view of a portion of the structure of the present invention.

[0029] In the diagram: 1. Reactor; 2. Outer pipe; 3. Connecting mechanism; 31. Top cover; 32. Sealing plate; 4. Pressure relief assembly; 401. Bottom ring; 402. Outer cylinder; 403. Slider; 404. Circular plate; 405. Mounting cylinder; 406. Moving column; 407. Cover cylinder; 408. Telescopic spring; 409. Sealing ring; 410. Vertical plate; 411. Handle; 412. Tank; 413. Moving plate; 414. Locking block; 415. Fixing spring; 416. Pull rope; 417. Pull rod; 5. Fixing mechanism; 51. Outer box; 52. Support rod; 53. Swinging plate; 54. Reset spring; 55. Wedge block; 56. Pressure plate; 6. Bottom plate; 7. Processing mechanism; 701. Processing box; 702. Processing container; 703. Stabilizing plate; 704. Connecting pipe; 705. Inlet pipe; 706. Drain pipe; 707. Discharge pipe; 708. Mounting frame; 709. Filter plate; 710. Horizontal plate; 711. U-shaped rod, 8 pressure relief pipes. Detailed Implementation

[0030] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0031] Please see Figure 1-9The present invention provides a technical solution: an automatic overpressure relief device for an explosion-proof reactor used in chemical production, comprising a reactor 1 and a pressure relief component 4. An outer pipe 2 extending to the top of the reactor 1 is fixedly installed on the inner top wall of the reactor 1. A connecting mechanism 3 is movably installed on the inner top wall of the outer pipe 2. The pressure relief component 4 is disposed on the inner side of the outer pipe 2 and extends to the top of the connecting mechanism 3. Fixing mechanisms 5 connected to the connecting mechanism 3 are provided on both the left and right sides of the outer pipe 2. A base plate 6 is fixedly installed on the right side of the reactor 1. A processing mechanism 7 connected to the top of the reactor 1 is provided on the top of the base plate 6. A pressure relief pipe 8 extending to the inner side of the processing mechanism 7 is fixedly installed on the right side of the inner wall of the outer pipe 2.

[0032] The connecting mechanism 3 includes a top cover 31, which is movably mounted on the top of the outer tube 2, and a sealing plate 32 that fits against the inner side of the outer tube 2 is fixedly mounted on the inner side of the top cover 31.

[0033] The pressure relief assembly 4 includes a bottom ring 401. The bottom ring 401 is fixedly installed on the inner bottom wall of the outer tube 2. The bottom ring 401 provides a contact surface for the sealing ring 409. An outer cylinder 402 extending to the inner side of the outer tube 2 is fixedly installed on the top of the top cover 31. A slider 403 extending to its bottom is slidably installed on the inner side of the outer cylinder 402. A circular plate 404 is fixedly installed on the bottom of the slider 403. An installation cylinder 405 is fixedly installed on the bottom of the circular plate 404. The installation cylinder 405 provides installation space for the moving column 406. A moving column 406 extending to its bottom is slidably installed on the inner side of the installation cylinder 405. A cover cylinder 407 is fixedly installed on the bottom of the moving column 406. A telescopic spring 408 is fixedly installed between the circular plate 404 and the cover cylinder 407, sleeved on the outside of the installation cylinder 405 and the moving column 406. The telescopic spring 408 provides elastic force so that the cover cylinder 407 can remain in contact with the bottom ring 401 under normal conditions. A sealing ring 409 that fits against the bottom ring 401 is fixedly installed at the bottom of the 07. A vertical plate 410 extending to the top of the outer cylinder 402 is fixedly installed at the top of the slider 403. A handle 411 is fixedly installed at the top of the vertical plate 410. Grooves 412 are opened on both the left and right sides of the vertical plate 410. Moving plates 413 are slidably installed on the front and rear sides of the inner wall of the groove 412. A locking block 414 extending to the outside of the groove 412 is fixedly installed between the front and rear moving plates 413. One end of the locking block 414 is engaged with the outer cylinder 402. A fixing spring 415 that is fixedly connected to the inner wall of the groove 412 is fixedly installed on one side of the locking block 414. A pull rope 416 that passes through the fixing spring 415 and extends to the top of the vertical plate 410 is fixedly installed on one side of the locking block 414. The pull rope 416 is used to pull the locking block 414 to separate it from the outer cylinder 402. A pull rod 417 is fixedly installed between the tops of the two pull ropes 416.

[0034] The inner wall of the outer tube 2 is open on both the upper and lower sides. The inner top wall of the reactor 1 is provided with a mounting hole that matches the outer tube 2. The inner side of the top cover 31 is provided with a circular hole that matches the outer cylinder 402. The inner side of the sealing plate 32 is provided with a through hole that matches the outer cylinder 402. The inner bottom wall of the cover cylinder 407 is open. The inner walls of the outer cylinder 402 are provided with locking holes that match the locking block 414 on both the left and right sides. There are four locking holes on each side, which are evenly distributed from top to bottom. The inner side of the vertical plate 410 is provided with a through hole that matches the pull rope 416. The outer side of the pull rod 417 is covered with a sponge sleeve. A scale is provided on the right side of the outer cylinder 402. The inner side of the mounting cylinder 405 is provided with a circular groove that matches the movement trajectory of the moving column 406. The outer side of the handle 411 is covered with a protective sleeve.

[0035] The operator pulls the lever 417, which in turn causes the locking block 414 to retract into the groove 412 through the pull rope 416, overcoming the elastic force of the fixed spring 415. This allows the vertical plate 410 to move up and down, adjusting the height of the slider 403 and the circular plate 404, thereby changing the tension of the telescopic spring 408. After adjusting to the appropriate position, the operator releases the lever 417, and the locking block 414 re-engages into the locking hole under the action of the fixed spring 415, thus completing the setting of the pressure relief.

[0036] The fixing mechanism 5 includes an outer box 51. The outer box 51 is fixedly installed on both the left and right sides of the outer tube 2, located below the top cover 31. A support rod 52 is fixedly installed between the front and rear sides of the inner wall of the outer box 51. A swing plate 53 extending to the top of the outer box 51 is rotatably connected to the outer side of the support rod 52. The swing plate 53 can rotate around the support rod 52. A return spring 54 fixedly connected to the inner wall of the outer box 51 is fixedly installed on the side of the swing plate 53 away from the top cover 31. A wedge block 55 that fits against the top of the top cover 31 is fixedly installed on the top of the swing plate 53. A pressure plate 56 extending to the bottom of the outer box 51 is fixedly installed on the bottom of the swing plate 53. The pressure plate 56 facilitates the operator to press the swing plate 53 downward.

[0037] The top of the wedge block 55 is sloping, the two wedge blocks 55 are symmetrically distributed, the inner walls of the outer box 51 are open on both the top and bottom sides, and the outer side of the pressure plate 56 is provided with a sponge pad.

[0038] The processing mechanism 7 includes a processing box 701, which is fixedly installed on the top of the base plate 6 and fixedly connected to the top of the reactor 1. The other end of the pressure relief pipe 8 extends to the inside of the processing box 701. A processing container 702 is fixedly installed on the left side of the inner bottom wall of the processing box 701. A stabilizing plate 703 is fixedly installed on the inner top wall of the processing container 702. A connecting pipe 704 is fixedly installed on the right side of the pressure relief pipe 8, penetrating and extending to the bottom of the stabilizing plate 703. An inlet pipe 705 extending to the inside of the processing container 702 is fixedly installed on the top of the processing box 701. An inlet pipe 705 extending to the inside of the processing container 702 is fixedly installed on the front side of the inner wall of the processing container 702. The treatment box 701 has a drain pipe 706 on the front side. The inner wall of the treatment box 701 is fixedly installed with a drain pipe 707 extending to the right side. The inner wall of the treatment box 701 is fixedly installed with mounting frames 708 on both the front and rear sides. A filter plate 709 is movably installed between the two mounting frames 708. A horizontal plate 710 extending to the top of the treatment box 701 is fixedly installed on the top of the filter plate 709. A U-shaped rod 711 is fixedly installed on the top of the horizontal plate 710. The horizontal plate 710 facilitates the operator to remove the filter plate 709. The U-shaped rod 711 is fixedly installed on the top of the horizontal plate 710, which is convenient for the operator to hold.

[0039] The inner top wall of the treatment box 702 is designed with an opening, and the treatment liquid is placed inside the treatment box 702. The inner top wall of the treatment box 701 is provided with mounting holes that are compatible with the horizontal plate 710.

[0040] During use, place the reactor 1 in a suitable position to ensure its stability. Install the pressure relief component 4 inside the outer tube 2. After adjusting the position, install the top cover 31 of the connecting mechanism 3 on the top of the outer tube 2, ensuring that the sealing plate 32 fits against the inner side of the outer tube 2. Ensure that the wedge block 55 fits against the top of the top cover 31. After installation, perform debugging. Add an appropriate amount of treatment liquid to the treatment box 702 and adjust the liquid level through the inlet pipe 705. Check whether the connections of each component are firm and the seals are good. Check whether the pressure relief component 4 opens and closes flexibly and whether the locking block 414 can properly engage and disengage from the locking hole. During the chemical production process, closely monitor the reactor 1. Pressure changes within the reactor 1 can be monitored in real time using a pressure gauge or other pressure monitoring equipment installed on the reactor 1. When the pressure is within the normal range, the device is in standby mode and no special operation is required. When the pressure inside the reactor 1 exceeds the set value, the device will automatically perform a pressure relief operation. Operators should immediately move away from the reactor 1 to ensure their own safety. During the pressure relief process, observe the operation of the treatment mechanism 7 to ensure that the gas or liquid can smoothly enter the treatment box 702 for treatment and be filtered through the filter plate 709. If any abnormality is found in the treatment mechanism 7, such as leakage of the treatment liquid or blockage of the filter plate 709, appropriate measures should be taken in a timely manner.

[0041] Regularly inspect the device, checking the wear of each component, sealing performance, and connection tightness. Check if the treatment fluid in the treatment box 702 is sufficient; add more if necessary. Check if the filter plate 709 is clogged; clean or replace it if clogged. Regularly clean and maintain the device, removing impurities and dirt from the outer pipe 2, pressure relief assembly 4, and treatment mechanism 7. Lubricate moving parts to ensure smooth operation. Regularly inspect and replace vulnerable parts such as the telescopic spring 408, sealing ring 409, fixing spring 415, and return spring 54 to ensure the normal operation of the device.

[0042] Furthermore, any content not described in detail in this specification is existing technology known to those skilled in the art.

[0043] In summary, this explosion-proof reactor overpressure automatic relief device for chemical production, through the setting of a fixing mechanism 5 and a connecting mechanism 3, ensures that the top cover 31 and sealing plate 32 in the connecting mechanism 3 are tightly fitted with the outer pipe 2, enhancing the overall sealing performance. The wedge block 55 and swing plate 53 in the fixing mechanism 5, under the action of the return spring 54, tightly press against the top of the top cover 31, preventing the top cover 31 from accidentally opening during the reaction. If disassembly and replacement are required, simply press the two side pressure plates 56 to tilt the swing plate 53 against the force of the return spring 54, which will move the wedge block 55 to release its restriction on the top cover 31, achieving easy disassembly. Through the setting of a processing mechanism 7, the gas or liquid entering the processing mechanism 7 first enters the processing tank 701, and then enters the processing box 702 through the connecting pipe 704. The processing box 702 contains a processing liquid, and the gas reacts chemically with the processing liquid. Physical absorption reduces the harmfulness or corrosiveness of the gas. After treatment, the gas flows out from the top of the treatment box 702 and enters the treatment chamber 701. The filter plate 709 further filters the treated gas to remove impurities and particulate matter. Finally, the treated and filtered gas is discharged from the treatment chamber 701 through the discharge pipe 707. This achieves the purpose of gas treatment and solves the problem that some gases discharged from the reactor are at high temperatures or produce a pungent odor. Without a corresponding gas treatment structure, directly discharging the gas from the reactor may burn the operators or cause environmental pollution and adverse effects on the operators' health. In addition, the integrated installation method sometimes causes damage to the cylinder and other structures due to large impacts during depressurization, requiring replacement. However, the integrated structure is not convenient for disassembly and replacement, which affects the depressurization of the reactor.

[0044] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0045] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An overpressure automatic relief device for an explosion-proof reaction kettle used in chemical production, comprising a reaction kettle (1) and a pressure relief assembly (4), wherein an outer tube (2) extending to the top of the reaction kettle (1) is fixedly installed on the inner top wall of the reaction kettle (1), characterized in that: The inner top wall of the outer pipe (2) is movably provided with a connecting mechanism (3), the pressure relief assembly (4) is arranged on the inner side of the outer pipe (2) and extends to the top of the connecting mechanism (3), the left and right sides of the outer pipe (2) are provided with fixing mechanisms (5) connected with the connecting mechanism (3), and the right side of the reaction kettle (1) is fixedly provided with a bottom plate (6); the top of the bottom plate (6) is provided with a treatment mechanism (7) connected with the top of the reaction kettle (1), and the inner wall of the outer pipe (2) is fixedly provided with a pressure relief pipe (8) extending to the inner side of the treatment mechanism (7). The connecting mechanism (3) comprises a top cover (31), and the top of the outer pipe (2) is movably provided with the top cover (31); the inner side of the top cover (31) is fixedly provided with a sealing plate (32) abutting the inner side of the outer pipe (2).

2. The overpressure automatic relief device for an explosion-proof reaction kettle for chemical production according to claim 1, characterized in that: The pressure relief assembly (4) comprises a bottom ring (401), and the inner bottom wall of the outer pipe (2) is fixedly provided with the bottom ring (401); the top of the top cover (31) is fixedly provided with an outer cylinder (402) extending to the inner side of the outer pipe (2); the inner side of the outer cylinder (402) is slidably provided with a sliding block (403) extending to the bottom of the outer cylinder (402); the bottom of the sliding block (403) is fixedly provided with a circular plate (404); the bottom of the circular plate (404) is fixedly provided with a mounting cylinder (405); the inner side of the mounting cylinder (405) is slidably provided with a moving column (406) extending to the bottom of the mounting cylinder (405); the bottom of the moving column (406) is fixedly provided with a cover cylinder (407); the bottom of the cover cylinder (407) is fixedly provided with a sealing ring (409) abutting the bottom ring (401); the top of the sliding block (403) is fixedly provided with a vertical plate (410) extending to the top of the outer cylinder (402); the top of the vertical plate (410) is fixedly provided with a handle (411); the left and right sides of the vertical plate (410) are provided with grooves (412); the front and rear sides of the inner wall of the groove (412) are slidably provided with moving plates (413); the moving plates (413) are fixedly provided with clamping blocks (414) extending to the outer side of the groove (412) between the front and rear sides; one end of the clamping block (414) is clamped with the outer cylinder (402); one side of the clamping block (414) is fixedly provided with a fixed spring (415) fixedly connected with the inner wall of the groove (412); one side of the clamping block (414) is fixedly provided with a pull rope (416) penetrating through the fixed spring (415) and extending to the top of the vertical plate (410); and the top of the two pull ropes (416) is fixedly provided with a pull rod (417).

3. The overpressure automatic relief device for an explosion-proof reaction kettle for chemical production according to claim 1, characterized in that: The fixing mechanism (5) comprises an outer box (51), the left and right sides of the outer tube (2) are fixedly installed with the outer box (51) below the top cover (31), the inner wall of the outer box (51) is fixedly installed with a support rod (52) between the front and rear sides, the outer side of the support rod (52) is rotatably connected with an oscillating plate (53) extending to the top of the outer box (51), the side, away from the top cover (31), of the oscillating plate (53) is fixedly installed with a reset spring (54) fixedly connected with the inner wall of the outer box (51), the top of the oscillating plate (53) is fixedly installed with a wedge-shaped block (55) abutting the top of the top cover (31), and the bottom of the oscillating plate (53) is fixedly installed with a pressing plate (56) extending to the bottom of the outer box (51).

4. The overpressure automatic relief device for an explosion-proof reaction kettle for chemical production according to claim 1, characterized in that: The processing mechanism (7) comprises a processing box (701) fixedly installed on the top of the bottom plate (6) and fixedly connected with the top of the reaction kettle (1), one end of the pressure relief pipe (8) extends to the inner side of the processing box (701), the inner bottom wall of the processing box (701) is fixedly installed with a processing box (702), the inner top wall of the processing box (702) is fixedly installed with a stabilizing plate (703), the right side of the pressure relief pipe (8) is fixedly installed with a connecting pipe (704) penetrating through and extending to the bottom of the stabilizing plate (703), the top of the processing box (701) is fixedly installed with a liquid inlet pipe (705) extending to the inner side of the processing box (702), the inner wall of the processing box (702) is fixedly installed with a liquid outlet pipe (706) extending to the front side of the processing box (701), the inner wall of the processing box (701) is fixedly installed with a discharge pipe (707) extending to the right side thereof, the inner wall of the processing box (701) is fixedly installed with mounting frames (708) on the front and rear sides, a filter plate (709) is movably installed between the two mounting frames (708), the top of the filter plate (709) is fixedly installed with a cross plate (710) extending to the top of the processing box (701), and the top of the cross plate (710) is fixedly installed with a U-shaped rod (711).

5. The overpressure automatic relief device for an explosion-proof reaction kettle used in chemical production according to claim 4, characterized in that: The inner top wall of the processing box (702) is designed as an opening, and the inner side of the processing box (702) is placed with a processing liquid.

6. The overpressure automatic relief device for an explosion-proof reaction kettle for chemical production according to claim 2, characterized in that: The inner wall of the outer tube (2) is designed as an opening on the upper and lower sides, the inner top wall of the reaction kettle (1) is provided with an installation circular hole matched with the outer tube (2), the inner side of the top cover (31) is provided with a circular hole matched with the outer cylinder (402), and the inner side of the sealing plate (32) is provided with a through hole matched with the outer cylinder (402).

7. The overpressure automatic relief device for an explosion-proof reaction kettle for chemical production according to claim 2, characterized in that: The inner bottom wall of the cover cylinder (407) is designed as an opening, the inner walls of the left and right sides of the outer cylinder (402) are provided with clamping holes matched with the clamping blocks (414), the number of the clamping holes on one side is four and they are equidistantly distributed from top to bottom, the inner side of the vertical plate (410) is provided with a penetrating hole matched with the pull rope (416), and the outer side of the pull rod (417) is wrapped with a sponge sleeve.

8. The overpressure automatic relief device for an explosion-proof reaction kettle for chemical production according to claim 3, characterized in that: The top of the wedge (55) is inclined, two wedge (55) is symmetrically distributed, the inner wall of the outer box (51) is designed as an opening on both sides, and the outer side of the pressing plate (56) is provided with a sponge pad.

9. The overpressure automatic relief device for an explosion-proof reaction kettle for chemical production according to claim 2, characterized in that: The right side of the outer cylinder (402) is provided with a scale, the inner side of the mounting cylinder (405) is provided with a circular groove matched with the moving track of the moving column (406), and the outer side of the handle (411) is wrapped with a protective sleeve.

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