Magnetic explosion venting device

Abstract

The utility model discloses a magnetic explosion venting device, which belongs to the technical field of explosion venting and comprises a connecting pipe used for being communicated with a component to be decompressed. The sealing assembly comprises an outer sealing piece and an inner sealing piece, the outer sealing piece is detachably connected to the connecting pipe, and the outer sealing piece and the connecting pipe are attached and sealed through conical surfaces. The explosion venting assembly covers the top of the outer sealing piece and is detachably connected with the outer sealing piece. Explosion venting holes are formed in the explosion venting assembly in the circumferential direction. The magnetic component comprises a magnetic part and a movable part, the magnetic part is connected to the top surface of the explosion venting component, and the movable part is arranged at the top; the bottom of the supporting rod is detachably connected with the top face of the inner sealing piece, and the top of the supporting rod penetrates through the explosion venting assembly. The spring sleeves the outer side of the supporting rod and abuts against the top of the inner cavity of the explosion venting assembly and the top face of the inner sealing piece. According to the device, sealing reliability and maintenance convenience are improved through conical surface sealing and a detachable structure, explosion venting and resetting are achieved through cooperation of magnetic force and the spring, the problems of an existing device are effectively solved, and the long-term stable operation requirement is met.

Description

Technical Field

[0001] This utility model belongs to the field of explosion venting technology, and in particular relates to a magnetic explosion venting device. Background Technology

[0002] During the operation of coal mills in industries such as power and chemicals, the explosive combustion of pulverized coal can cause a sharp increase in pressure within the hot primary air branch pipe, potentially leading to pipeline damage or even equipment accidents. Therefore, it is necessary to install explosion relief devices on the hot primary air branch pipes to quickly release excessive pressure and ensure the safe operation of the system.

[0003] Chinese patent CN201251019Y discloses a magnetic pre-tightening dual-pressure protection explosion-proof device, which includes several permanent magnets evenly embedded in a magnetic suction cup. The negative suction cup, the magnetic suction cup, and the fixed suction cup are horizontally stacked from top to bottom and all three are installed in a suction cup box. The several permanent magnets are fixed on the upper end face of the fixed suction cup. The door body is set on the upper end face of the intermediate flange in the lower part of the cylinder assembly and is sealed to the intermediate flange. A conical spring is sleeved on the central shaft sleeve, and a return spring is sleeved on the spacer. While the existing explosion venting device can achieve basic explosion venting functions, it has significant drawbacks: Insufficient sealing reliability: After long-term operation, the sealing structure is prone to damage, leading to powder leakage, which affects the normal operation of the equipment and the surrounding environment; Poor maintenance convenience: Replacing sealing components (such as sealing rings) is difficult, requiring shutdown and disassembly of complex parts, increasing maintenance costs and downtime, and causing inconvenience to power plants and other application scenarios; Environmental and safety hazards: Powder leakage leads to dust accumulation around the coal mill, which not only pollutes the working environment but may also cause secondary safety accidents, threatening the health and safety of operation and maintenance personnel.

[0004] Therefore, existing explosion relief devices cannot meet the requirements of long-term stable operation of coal mill systems. There is an urgent need for an explosion relief device that is simple in structure, reliable in sealing, and easy to maintain, in order to solve the problems of pressure control and sealing maintenance after deflagration. Utility Model Content

[0005] To solve the above-mentioned technical problems, this utility model proposes a magnetic explosion relief device.

[0006] To achieve the above objectives, this utility model provides a magnetic explosion relief device, comprising:

[0007] Connecting pipe, used to connect to the component to be depressurized;

[0008] A sealing assembly includes an outer seal and an inner seal, wherein the outer seal is detachably connected to the connecting pipe, and the inner wall of the outer seal and the outer wall of the inner seal are sealed by a conical surface fitting together.

[0009] An explosion venting assembly is fitted over the top of the outer sealing element and is detachably connected to the outer sealing element. The explosion venting assembly has several explosion venting holes arranged circumferentially inside, and the explosion venting holes are connected to the outside.

[0010] A magnetic component includes a magnetic element and a movable element, wherein the magnetic element is connected to the top surface of the explosion relief component, and the movable element is disposed on top of the magnetic element;

[0011] A support rod, the bottom of which is detachably connected to the top surface of the inner sealing element, and the top of which passes through the explosion relief assembly and the magnetic element and is connected to the movable element;

[0012] A spring is sleeved on the outside of the support rod, with its two ends abutting against the top of the inner cavity of the explosion relief assembly and the top surface of the inner seal, respectively.

[0013] Preferably, the top of the support rod is connected to the movable part via an adjusting nut and a fixing nut; the adjusting nut is threaded to the outside of the support rod, and the bottom of the adjusting nut has a boss located below the movable part, and the top of the adjusting nut extends upward through the movable part; the fixing nut is located above the adjusting nut, the top of the fixing nut is threaded to the support rod, and the bottom is fixed with a collar, which is sleeved on the outside of the adjusting nut.

[0014] Preferably, the top surface of the inner seal is detachably connected with a plurality of guide wheels, and the guide wheels abut against the inner sidewall of the explosion relief assembly.

[0015] Preferably, the top surface of the explosion relief assembly is detachably connected to a protective cover, which covers the outside of the magnetic component and the movable component.

[0016] Preferably, the outer wall of the movable component is slidably connected to the inner wall of the protective cover.

[0017] Preferably, the top of the magnetic component is fixed with several high-temperature resistant strong magnets.

[0018] Preferably, the explosion relief assembly, the outer seal, and the connecting pipe are detachably connected by bolts, and sealing rings are provided between the explosion relief assembly and the outer seal, and between the outer seal and the connecting pipe.

[0019] Preferably, the protective cover and the explosion relief component, as well as the magnetic component and the explosion relief component, are detachably connected by bolts, and a buffer pad is provided between the protective cover and the magnetic component and the explosion relief component.

[0020] Compared with the prior art, the present invention has the following advantages and technical effects:

[0021] The connecting pipe connects to the component to be pressure-relieved, providing a channel for pressure release. In the sealing assembly, the outer seal is detachably connected to the connecting pipe, and the inner wall of the outer seal and the outer wall of the inner seal are sealed by a conical surface fit. This design ensures good sealing performance and facilitates disassembly and maintenance, solving the problem of easy damage and difficult replacement of the sealing structure in existing devices. The explosion relief assembly is mounted on top of the outer seal and is detachably connected. Several explosion relief holes arranged circumferentially inside ensure uniform and rapid pressure release, improving explosion relief efficiency. The magnetic assembly provides stable sealing force through the cooperation of magnetic and moving parts. When the pressure reaches the opening condition, it can quickly separate to trigger the explosion relief. The cooperation of the support rod and the spring allows the device to automatically reset after explosion relief by relying on spring energy, ensuring sealing and reuse. The overall structural design is reasonable and effectively solves the problems of insufficient sealing reliability and poor maintenance convenience of existing explosion relief devices, meeting the requirements for long-term stable operation. Attached Figure Description

[0022] The accompanying drawings, which form part of this utility model, are used to provide a further understanding of the utility model. The illustrative embodiments of the utility model and their descriptions are used to explain the utility model and do not constitute an undue limitation of the utility model. In the drawings:

[0023] Figure 1 This is a schematic diagram of the magnetic explosion relief device of this utility model;

[0024] Figure 2 for Figure 1 Enlarged view of A in the middle;

[0025] Figure 3 for Figure 1 A magnified view of B in the middle.

[0026] In the diagram: 1. Connecting pipe; 2. Outer seal; 3. Inner seal; 4. Explosion relief assembly; 5. Explosion relief hole; 6. Magnetic component; 7. Moving component; 8. Support rod; 9. Spring; 10. Adjusting nut; 11. Fixing nut; 12. Guide wheel; 13. Protective cover; 14. Sealing ring; 15. Buffer pad; 601. High temperature resistant strong magnet. Detailed Implementation

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0028] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0029] Reference Figures 1 to 3 As shown, this embodiment provides a magnetic explosion relief device, including:

[0030] Connecting pipe 1 is used to connect to the component to be depressurized;

[0031] The sealing assembly includes an outer seal 2 and an inner seal 3. The outer seal 2 is detachably connected to the connecting pipe 1, and the inner wall of the outer seal 2 and the outer wall of the inner seal 3 are sealed by a conical surface.

[0032] The explosion relief component 4 is covered on the top of the outer sealing component 2 and is detachably connected to the outer sealing component 2. The explosion relief component 4 has several explosion relief holes 5 arranged in the circumferential direction inside, and the explosion relief holes 5 are connected to the outside.

[0033] The magnetic component includes a magnetic element 6 and a movable element 7. The magnetic element 6 is connected to the top surface of the explosion relief component 4, and the movable element 7 is disposed on the top of the magnetic element 6.

[0034] Support rod 8, the bottom inner seal 3 of support rod 8 is detachably connected to the top surface, the top of which passes through the explosion relief assembly 4 and the magnetic part 6 and is connected to the movable part 7;

[0035] Spring 9 is sleeved on the outside of support rod 8, and the two ends of spring 9 abut against the top of the inner cavity of explosion relief assembly 4 and the top surface of inner seal 3, respectively.

[0036] The connecting pipe 1 connects to the component to be depressurized, providing a channel for pressure release. In the sealing assembly, the outer seal 2 is detachably connected to the connecting pipe 1, and the inner wall of the outer seal 2 and the outer wall of the inner seal 3 are sealed by a conical surface. This design ensures good sealing performance and facilitates disassembly and maintenance, solving the problem of easy damage and difficult replacement of the sealing structure in existing devices. The explosion relief assembly 4 is mounted on top of the outer seal 2 and is detachably connected. Several explosion relief holes 5 arranged circumferentially inside ensure uniform and rapid pressure release, improving explosion relief efficiency. The magnetic assembly provides stable sealing force through the cooperation of the magnetic component 6 and the moving component 7. When the pressure reaches the opening condition, it can quickly separate to trigger the explosion relief. The cooperation of the support rod 8 and the spring 9 allows the device to automatically reset after explosion relief by relying on the energy of the spring 9, ensuring sealing and reuse. The overall structural design is reasonable and effectively solves the problems of insufficient sealing reliability and poor maintenance convenience of existing explosion relief devices, meeting the requirements for long-term stable operation.

[0037] In a further optimized design, the top of the support rod 8 is connected to the movable part 7 via an adjusting nut 10 and a fixing nut 11. The adjusting nut 10 is threaded to the outside of the support rod 8, and a boss is provided at the bottom of the adjusting nut 10, which is located below the movable part 7. The top of the adjusting nut 10 extends upward and penetrates the movable part 7. The fixing nut 11 is located above the adjusting nut 10, and the top of the fixing nut 11 is threaded to the support rod 8. A collar is fixed to the bottom of the fixing nut 11, and the collar is fitted onto the outside of the adjusting nut 10.

[0038] The design of the adjusting nut 10 and the fixed nut 11 significantly improves the ease of adjusting the sealing performance and the structural stability of the device. The adjusting nut 10 is threaded onto the outside of the support rod 8, and its bottom boss abuts against the lower part 7. By rotating the adjusting nut 10, the sealing force of the sealing component can be adjusted to ensure that there is no gap between the inner sealing part 3 and the outer sealing part 2, thus preventing coal powder leakage. The fixed nut 11 is set above the adjusting nut 10, and its bottom collar is sleeved on the outside of the adjusting nut 10. After adjustment, it can form an axial limit on the moving part 7, effectively preventing the moving part 7 from loosening due to vibration, pressure fluctuations and other factors during equipment operation, ensuring the stability and reliability of the device, and avoiding the problem of coal powder leakage caused by the weakening of the sealing force. At the same time, this structural design facilitates quick on-site adjustment and locking, improving the ease of maintenance and long-term operational reliability of the device.

[0039] The scheme is further optimized by having several guide wheels 12 detachably connected to the top surface of the inner sealing component 3, with the guide wheels 12 abutting against the inner wall of the explosion relief component 4.

[0040] By detachably connecting guide wheels 12 to the top surface of the inner seal 3, and with the guide wheels 12 abutting against the inner wall of the explosion relief assembly 4, the stability and reliability of the explosion relief device are significantly improved. The circumferentially distributed guide wheels 12 can evenly support the inner seal 3, allowing it to move linearly along the inner wall of the explosion relief assembly 4 when the pressure changes, effectively avoiding sealing failure or explosion relief delay caused by offset or jamming. The abutting design between the guide wheels 12 and the inner wall reduces motion friction, reduces wear on the seal and the explosion relief assembly 4, and extends the service life of the device. The detachable connection method facilitates the individual replacement and maintenance of the guide wheels 12 without disassembling the core components as a whole, improving maintenance convenience. It is especially suitable for long-term operation in dusty environments such as coal mills, ensuring that the explosion relief sealing assembly maintains a stable trajectory under high-frequency pressure fluctuations, and ensuring the accuracy of the explosion relief action and the long-term reliability of the sealing performance.

[0041] The design has been further optimized so that a protective cover 13 is detachably connected to the top surface of the explosion relief component 4. The protective cover 13 covers the outside of the magnetic component 6 and the movable component 7.

[0042] By installing a detachable protective cover 13 on the top surface of the explosion relief assembly 4 and covering the magnetic component 6 and the moving component 7, the protective performance and maintenance convenience of the device are significantly improved: the protective cover 13 can effectively isolate the magnetic component 6 and the moving component 7 from external environmental factors such as dust and moisture, avoid magnetic force attenuation or component jamming caused by dust accumulation, and ensure the long-term stable operation of the magnetic component; the detachable connection method facilitates the quick removal of the protective cover 13 to inspect or replace the internal magnetic component 6 and the moving component 7 without disassembling the core explosion relief sealing assembly, reducing maintenance difficulty and downtime.

[0043] The design was further optimized so that the outer wall of the movable part 7 and the inner wall of the protective cover 13 are slidably connected.

[0044] By designing the outer wall of the moving part 7 and the inner wall of the protective cover 13 as a sliding connection, the accuracy and stability of the device operation are significantly improved: the sliding connection provides vertical guidance constraint for the moving part 7, ensuring that it always moves in a straight line during the magnetic component's attraction or separation, avoiding magnetic coupling failure or sealing surface misalignment caused by offset, and ensuring the accuracy of the explosion venting trigger pressure and the reliability of the reset seal; the inner wall of the protective cover 13, as a sliding track, can reduce the frictional resistance of the moving part 7 during movement, reduce component wear, and especially in dusty environments, effectively prevent foreign particles from entering the gap between the moving part 7 and the magnetic component 6, avoiding jamming; the protective cover 13 not only provides structural support for the moving part 7, but also ensures that the moving part 7 moves in a vertical direction through precise guidance, avoiding offset or tilting, and ensuring the reliability of the explosion venting trigger and reset process, which is especially suitable for coal mill operating conditions with high dust and harsh environments, effectively extending the service life of the core components of the device and improving the overall operational stability.

[0045] The design was further optimized by attaching several high-temperature resistant strong magnets 601 to the top of the magnetic component 6.

[0046] The high-temperature resistant strong magnetic material 601 can maintain stable magnetic properties under high-temperature conditions in the hot primary air branch pipe of the coal mill, avoiding the sealing force attenuation or explosion threshold drift caused by the demagnetization of ordinary magnetic materials at high temperatures. This ensures that the device accurately maintains the set sealing pressure and explosion triggering conditions during long-term high-temperature operation. The fixed design of several strong magnets can form a superimposed magnetic field, providing a stronger and more uniform magnetic force, enhancing the attraction force on the moving part 7, ensuring the tightness of the sealing component during normal operation, and effectively preventing powder leakage.

[0047] The design is further optimized so that the explosion relief component 4, the outer seal 2 and the connecting pipe 1 are detachably connected by bolts, and a sealing ring 14 is provided between the explosion relief component 4 and the outer seal 2, and between the outer seal 2 and the connecting pipe 1.

[0048] The explosion relief assembly 4, the outer seal 2, and the connecting pipe 1 are detachably connected by bolts, and sealing rings 14 are set on each connection surface, which significantly improves the sealing performance, maintenance convenience, and structural stability of the device. The bolt connection enables modular assembly of each core component, which is convenient for quick disassembly and replacement. When the sealing ring 14 is worn or the component is damaged, it is not necessary to disassemble the entire equipment. Only local components need to be inspected, which greatly reduces maintenance difficulty and downtime. The setting of the sealing ring 14 forms a double sealing barrier in the high-pressure dust environment, which effectively prevents the leakage of coal powder and hot gas. The rigid structure of the bolt connection can withstand high-frequency pressure fluctuations, ensuring that the components do not shift during the explosion relief process. Combined with the elastic sealing characteristics of the sealing ring 14, it not only ensures the tightness during normal operation, but also provides reliable support for the reset seal after the explosion relief. It is especially suitable for harsh working conditions with large vibration and high dust, such as coal mills, and achieves a dual improvement in sealing performance and maintenance efficiency.

[0049] The design is further optimized so that the protective cover 13 and the explosion relief component 4, and the magnetic component 6 and the explosion relief component 4 are detachably connected by bolts, and a buffer pad 15 is provided between the protective cover 13 and the magnetic component 6 and the explosion relief component 4.

[0050] By using bolted detachable connections between the protective cover 13 and the explosion relief assembly 4, and between the magnetic component 6 and the explosion relief assembly 4, and by setting up a buffer pad 15, the structural reliability, vibration resistance, and maintenance convenience of the device are significantly improved. The bolted connection enables modular assembly of the protective cover 13, the magnetic component 6, and the explosion relief assembly 4, facilitating quick disassembly for inspection of core components such as the internal magnetic component 6 and moving parts 7, without the need for overall equipment disassembly, greatly reducing maintenance difficulty and time costs. The buffer pad 15 can effectively absorb vibration energy during equipment operation, reducing the risk of component wear and bolt loosening caused by rigid connections. Especially under the high-frequency vibration conditions of the coal mill, it can prevent magnetic component displacement or sealing failure caused by vibration. At the same time, the elastic buffering effect of the buffer pad 15 can alleviate the impact force between components during explosion relief, protect vulnerable components such as the high-temperature resistant strong magnet 601 from impact breakage, extend the service life of core components, and ensure that the magnetic component provides accurate sealing force and explosion relief triggering force in a long-term stable manner, achieving reliable operation and long-term sealing of the device in harsh vibration environments.

[0051] Device operation process:

[0052] The working process of this utility model can be divided into four stages: "normal operation, explosion venting triggering, pressure release, and reset sealing", as detailed below:

[0053] A. Normal operation phase

[0054] The device is connected to the hot primary air branch pipe via connecting pipe 1. The magnetic component 6, containing a high-temperature resistant strong magnet 601, is tightly attracted to the moving component 7 by strong magnetic force. The magnetic force is transmitted to the sealing assembly through the support rod, forming a stable sealing force to ensure that the outer sealing component 2 and the inner sealing component 3 are tightly fitted, preventing coal powder leakage. At this time, the spring 9 is in its natural state, the bottom of the explosion relief hole 5 is blocked by the sealing assembly, and the system pressure is maintained in balance by the magnetic force and the spring 9.

[0055] B. Explosion Triggering Phase

[0056] When a deflagration in the coal mill causes a sudden increase in pressure in the primary hot air branch pipe, exceeding the opening threshold set by the magnetic component, the moving part 7 separates from the magnetic part 6. The inner seal 3 moves upward under the pressure of the high-pressure gas, compressing the spring 9 and storing elastic potential energy. At the same time, the inner seal 3 separates from the outer seal 2, and the bottom of the explosion vent 5 connects to the connecting pipe 1, opening a channel for pressure release.

[0057] C. Stress Release Phase

[0058] High-pressure gas is rapidly discharged to the outside through the gap between the inner seal 3 and the outer seal 2, and through the circumferential vent holes 5 of the explosion venting assembly 4. The pressure inside the branch pipe drops rapidly, preventing damage to the pipeline due to overpressure. The sliding connection between the guide wheel 12 and the explosion venting assembly 4, and the sliding connection between the movable part 7 and the protective cover 13, serve a guiding function, ensuring that the inner seal 3 and the movable part 7 move in a straight line, preventing deviation or jamming, and ensuring a stable and efficient explosion venting process. During this stage, the magnetic buffer pad 15 protects the high-temperature resistant strong magnet 601, preventing the magnet from breaking due to the impact force during separation.

[0059] D. Reset Sealing Stage

[0060] When the branch pipe pressure drops to a safe range, the spring 9 releases the stored energy, pushing the inner seal 3 downwards to reset until the inner seal 3 and the outer seal 2 are in contact, the movable part 7 and the magnetic part 6 are re-attracted, and the device returns to its initial state.

[0061] The adjustment of the sealing force of the sealing assembly by adjusting nut 10 is as follows:

[0062] In the initial state, the moving part 7 is tightly attracted to the magnetic part 6 under the magnetic force of the magnetic part 6. At this time, the magnetic force is transmitted to the sealing assembly through the support rod 8, forming the initial sealing force. However, due to differences in operating conditions such as pressure fluctuations and wear of the sealing parts, it is necessary to further optimize the sealing effect through mechanical adjustment to ensure that there is no gap between the mating surfaces of the inner sealing part 3 and the outer sealing part 2, and to prevent coal powder leakage. The specific operation is as follows:

[0063] The adjusting nut 10 is threaded onto the outside of the support rod 8, and its boss contacts the bottom surface of the movable part 7. Rotating the adjusting nut 10 causes it to move upward along the support rod 8. At the same time, under the magnetic attraction of the magnetic part 6 and the movable part 7, the support rod 8 drives the inner seal 3 to move downward, so that the inner seal 3 presses against the outer seal 2, making the sealing surfaces of the two fit more tightly, thereby enhancing the sealing effect.

[0064] After adjustment, the movable part 7 still needs to be fixed upwards by the fixing nut 11 for limiting. The specific process is as follows:

[0065] The fixed nut 11 is threadedly connected to the support rod 8 and is located above the adjusting nut 10. When the fixed nut 11 is tightened, its collar is inserted into the lower end face to press against the upper end face of the movable part 7. The bottom surface of the movable part 7 abuts against the boss of the adjusting nut 10. The three of them press against each other to form an axial limit, preventing the movable part 7 from coming out of the support rod 8 and realizing the connection between the support rod 8 and the movable part 7.

[0066] In some designs, the fixing nut 11 has anti-loosening structures such as locking washers and locking sleeves to further enhance locking reliability.

[0067] Any aspects of this utility model that are not detailed herein are conventional technical means known to those skilled in the art.

[0068] In the description of this utility model, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0069] The embodiments described above are merely preferred embodiments of the present utility model and are not intended to limit the scope of the present utility model. Various modifications and improvements made to the technical solutions of the present utility model by those skilled in the art without departing from the spirit of the present utility model should fall within the protection scope defined by the claims of the present utility model.

Claims

1. A magnetic explosion relief device, characterized in that, include: Connecting pipe (1) is used to connect to the component to be depressurized; The sealing assembly includes an outer seal (2) and an inner seal (3). The outer seal (2) is detachably connected to the connecting pipe (1). The inner wall of the outer seal (2) and the outer wall of the inner seal (3) are sealed by a conical surface. An explosion relief assembly (4) is installed on the top of the outer sealing member (2) and is detachably connected to the outer sealing member (2). The explosion relief assembly (4) has several explosion relief holes (5) arranged circumferentially inside, and the explosion relief holes (5) are connected to the outside. The magnetic component includes a magnetic element (6) and a movable element (7), wherein the magnetic element (6) is connected to the top surface of the explosion relief component (4), and the movable element (7) is disposed on the top of the magnetic element (6); The support rod (8) is detachably connected to the top surface of the inner sealing element (3) at the bottom, and the top of the support rod (8) passes through the explosion relief assembly (4) and the magnetic element (6) and is connected to the movable element (7); A spring (9) is sleeved on the outside of the support rod (8), and the two ends of the spring (9) abut against the top of the inner cavity of the explosion relief assembly (4) and the top surface of the inner seal (3), respectively.

2. The magnetic explosion relief device according to claim 1, characterized in that: The top of the support rod (8) is connected to the movable part (7) via an adjusting nut (10) and a fixing nut (11); the adjusting nut (10) is threaded to the outside of the support rod (8), and the bottom of the adjusting nut (10) is provided with a boss, which is located below the movable part (7), and the top of the adjusting nut (10) extends upward through the movable part (7); the fixing nut (11) is located above the adjusting nut (10), and the top of the fixing nut (11) is threaded to the support rod (8), and a collar is fixed to the bottom, which is sleeved on the outside of the adjusting nut (10).

3. The magnetic explosion relief device according to claim 1, characterized in that: The top surface of the inner sealing component (3) is detachably connected with several guide wheels (12), and the guide wheels (12) abut against the inner wall of the explosion relief component (4).

4. The magnetic explosion relief device according to claim 1, characterized in that: The explosion relief assembly (4) has a detachable protective cover (13) on its top surface, which covers the magnetic component (6) and the movable component (7) on the outside.

5. The magnetic explosion relief device according to claim 4, characterized in that: The outer wall of the movable part (7) is slidably connected to the inner wall of the protective cover (13).

6. The magnetic explosion relief device according to claim 1, characterized in that: Several high-temperature resistant strong magnets (601) are fixed to the top of the magnetic component (6).

7. The magnetic explosion relief device according to claim 1, characterized in that: The explosion relief assembly (4), the outer seal (2) and the connecting pipe (1) are detachably connected by bolts. A sealing ring (14) is provided between the explosion relief assembly (4) and the outer seal (2) and between the outer seal (2) and the connecting pipe (1).

8. The magnetic explosion relief device according to claim 4, characterized in that: The protective cover (13) and the explosion relief assembly (4), as well as the magnetic component (6) and the explosion relief assembly (4), are detachably connected by bolts, and a buffer pad (15) is provided between the protective cover (13) and the magnetic component (6) and the explosion relief assembly (4).

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