Explosion venting mechanism of a barrel-type pulse dust removal device

Abstract

The present invention relates to the technical field of dust removal equipment, and specifically to an explosion relief mechanism for a barrel-type pulse dust collector, which includes an explosion relief chamber, an explosion relief disc, a first acquisition module, a first driving component, and a controller. One end of the explosion relief chamber is provided with a square port, and the square port is connected to the explosion relief port of the barrel-type pulse dust collector. The explosion relief disc is arranged between the square port and the explosion relief port. By providing a deep arc groove and a shallow arc groove on the end surface of the explosion relief disc, the present invention can automatically adjust the depth of the arc groove not blocked by the square port according to the dust concentration inside the barrel-type pulse dust collector, so that when the dust concentration is greater than the first preset value or less than or equal to the first preset value, the explosion relief disc can be blown open with a crack. In this way, the function of the explosion relief disc can be fully exerted, which not only prevents a large amount of energy from remaining inside the barrel-type pulse dust collector and being unable to be released outward, but also prevents too little energy from being absorbed when the explosion relief disc explodes and causing the explosion relief chamber to burst open.

Description

Technical Field

[0001] The present invention relates to the technical field of dust removal equipment, and particularly to an explosion venting mechanism for a barrel-type pulse dust collector. Background Art

[0002] The explosion venting mechanism of a dust collector is an important safety device designed to prevent serious accidents caused by dust explosions. For a dust explosion to occur inside a dust collector, the following conditions must be met: First, the dust inside the dust collector is combustible dust; Second, the concentration of the combustible dust reaches the concentration within the explosion limit; Third, the combustible dust is suspended inside the dust collector; Fourth, air enters the dust collector; Fifth, an ignition source enters the dust collector, and the ignition source includes but is not limited to open fire, electric sparks, electrostatic discharge, and frictional sparks. The explosion venting mechanism can quickly release the high-pressure and high-temperature gases generated by the explosion, thereby reducing the damage to the equipment itself and the harm to the surrounding environment and personnel.

[0003] Existing explosion venting mechanisms are usually installed at the explosion venting ports of dust collectors. The explosion venting disc closely adheres to and seals the explosion venting ports of the dust collector. The explosion venting disc has a preset pressure threshold. When the high pressure generated during an explosion in the dust collector exceeds this threshold, the explosion venting disc will rupture. At this time, the high-temperature and high-pressure gases inside the dust collector will enter the explosion venting mechanism, so that the high-temperature and high-pressure gases will not explode violently inside the dust collector, and it can effectively protect the outer shell, wall panels, filter bags, filter cartridges, fans and other mechanisms of the dust collector from being damaged. However, the existing explosion venting devices have the following problems in use. If an explosion venting disc with a relatively small pressure threshold is selected, although it is easy to explode the explosion venting disc when an explosion occurs inside the dust collector, the energy absorbed by the explosion venting disc when it explodes is relatively small. At this time, there will still be more energy exploding inside the dust collector and the explosion venting mechanism. When the energy of the explosion is large, it can even explode the explosion venting mechanism. If an explosion venting disc with a relatively large pressure threshold is selected, although the explosion venting disc requires more energy to be exploded, if the explosion venting disc is not exploded, the explosion will still only occur inside the dust collector, and the energy generated by the explosion cannot be dispersed into the explosion venting mechanism, so it is easy to damage the components inside the dust collector. Summary of the Invention

[0004] Based on this, in view of the problems existing in the current explosion venting mechanism, it is necessary to provide an explosion venting mechanism for a barrel-type pulse dust collector to solve the problem of low adaptability of the explosion venting disc of the existing explosion venting mechanism.

[0005] The above object is achieved by the following technical solutions:

[0006] An explosion venting mechanism for a barrel-type pulse dust collector includes:

[0007] The explosion venting bin has a square port at one end, and the square port is connected to the explosion venting port of the barrel-type pulse dust collector;

[0008] The explosion venting sheet is arranged between the square port and the explosion venting port. An annular explosion venting groove is formed on the end face of the explosion venting sheet. The diameter of the annular explosion venting groove is larger than the width of the square port. The annular explosion venting groove includes a plurality of deep arc grooves and a plurality of shallow arc grooves, and the plurality of deep arc grooves and the plurality of shallow arc grooves are alternately and smoothly connected into a ring;

[0009] The first acquisition module is arranged inside the barrel-type pulse dust collector, and the first acquisition module is used to acquire the dust concentration inside the barrel-type pulse dust collector;

[0010] The first driving component is arranged between the square port and the explosion venting port, and the first driving component is used to drive the explosion venting sheet to rotate around the axis of the annular explosion venting groove;

[0011] The controller is configured to receive the dust concentration acquired by the first acquisition module and control the first driving component to drive the explosion venting sheet to rotate around the axis of the annular explosion venting groove;

[0012] When the dust concentration inside the barrel-type pulse dust collector is less than or equal to the first preset concentration, the controller controls the first driving component to rotate so that the part of the annular explosion venting groove not blocked by the square port is the deep arc groove;

[0013] When the dust concentration inside the barrel-type pulse dust collector is greater than the first preset concentration, the controller controls the first driving component to rotate so that the part of the annular explosion venting groove not blocked by the square port is the shallow arc groove.

[0014] In one embodiment, a blasting port is formed at the bottom of the explosion venting bin, the blasting port faces downward, and a blasting plate is fixedly arranged in the blasting port. The pressure threshold that the blasting plate can withstand is less than the pressure threshold that the explosion venting bin can withstand.

[0015] In one embodiment, a cutting component is further arranged inside the explosion venting bin, and the cutting component is used to cut a straight groove on the upper surface of the blasting plate.

[0016] In one embodiment, the depth of the straight groove is positively correlated with the pressure inside the explosion venting bin.

[0017] In one embodiment, the cutting component includes a moving plate, a cutting tool and a corrugated pipe. One end of the corrugated pipe is connected to the inner wall of the explosion venting bin on the side far from the explosion venting sheet. The axis of the corrugated pipe coincides with the axis of the annular explosion venting groove. The other end of the corrugated pipe is fixedly connected to the moving plate. The moving plate can move along the axis of the annular explosion venting groove. A cutting tool is arranged at the lower part of the moving plate, and the cutting tool abuts against the upper surface of the blasting plate;

[0018] The blasting plate is arranged to be inclined upward from an end close to the explosion relief piece to an end away from the explosion relief piece.

[0019] In one of the embodiments, a plurality of spray holes are provided on the outer peripheral surface of the movable plate, and the plurality of spray holes are connected to the interior of the bellows, and the interior of the bellows stores coolant.

[0020] In one of the embodiments, a damping component is provided between the explosion venting plate and the explosion venting chamber, and the damping component is used to absorb the heat generated by the explosion.

[0021] In one embodiment, the damping assembly includes a damping cylinder, a damping rod and a damping piston. The damping cylinder is arranged on the explosion-proof plate. The damping cylinder is filled with damping fluid. The axis of the damping cylinder coincides with the axis of the annular explosion-proof groove. The damping piston is slidably connected in the damping cylinder. A plurality of damping holes are provided on the damping piston. The damping holes penetrate the damping piston along the axis of the damping piston. The damping rod is coaxially fixedly connected to the damping piston, and the end of the damping rod away from the damping piston is connected to the side surface of the movable plate away from the bellows.

[0022] In one of the embodiments, a guide assembly is provided between the movable plate and the inner wall of the explosion venting chamber, and the guide assembly is used to guide the movement of the movable plate so that the movable plate moves along the axis of the bellows.

[0023] In one embodiment, the guide assembly includes a guide block and a slider. The guide block is arranged on the inner wall of the explosion-proof chamber. A slide groove is opened on the side of the guide block. The slide groove extends along the axial direction of the bellows. The slider is arranged on the outer side of the movable plate, and the slider is slidably connected in the slide groove.

[0024] The beneficial effects of the present invention are:

[0025] The present invention can automatically adjust the depth of the arc groove not blocked by the square port according to the dust concentration inside the cylindrical pulse dust removal device by arranging deep arc grooves and shallow arc grooves on the end surface of the explosion-proof plate, so that when the dust concentration is greater than a first preset value or less than or equal to the first preset value, the explosion-proof plate can be blown open, and when the dust concentration is greater than the first preset value, the energy consumed by blasting a hole in the explosion-proof plate is greater than the energy consumed by blasting a hole in the explosion-proof plate when the dust concentration is less than or equal to the first preset value. In this way, the role of the explosion-proof plate can be fully exerted, which can not only prevent a large amount of energy from remaining inside the cylindrical pulse dust removal device and being unable to be released to the outside, but also prevent the explosion-proof plate from absorbing too little energy during the explosion, resulting in too much energy entering the explosion-proof bin and blowing up the explosion-proof bin. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is the whole of the explosion relief mechanism of a cylindrical pulse dust removal device of the present invention;

[0027] Figure 2 Schematic structural diagram of the explosion relief bin in a cylindrical pulse dust collector of the present invention;

[0028] Figure 3 Side view of a cylindrical pulse dust collector of the present invention;

[0029] Figure 4 is Figure 3 A - A cross - sectional view in;

[0030] Figure 5 Schematic diagram of the contracted state of the bellows in the explosion relief mechanism of a cylindrical pulse dust collector of the present invention;

[0031] Figure 6 Schematic structural diagram of the square port in the explosion relief mechanism of a cylindrical pulse dust collector of the present invention;

[0032] Figure 7 is Figure 6 side view of;

[0033] Figure 8 is Figure 4 Schematic diagram of the enlarged structure at position B in;

[0034] Figure 9 is Figure 5 Schematic diagram of the enlarged structure at position C in;

[0035] Figure 10 Schematic structural diagram of the cutting assembly in the explosion relief mechanism of a cylindrical pulse dust collector of the present invention.

[0036] Wherein:

[0037] 100, explosion relief bin; 110, square port; 120, blasting port; 130, blasting plate;

[0038] 200, explosion relief sheet; 210, annular explosion relief groove;

[0039] 300, first driving assembly; 310, motor; 320, gear ring;

[0040] 400, cutting assembly; 410, moving plate; 411, spray holes; 420, cutting knife; 430, bellows;

[0041] 500, damping assembly; 510, damping cylinder; 520, damping rod; 530, damping piston; 531, damping holes;

[0042] 610, guide block; 611, chute; 620, slider;

[0043] 1000, cylindrical pulse dust collector. Detailed implementation manners

[0044] In order to make the objectives, technical solutions and advantages of the present invention more clearly understood, the present invention will be further described in detail below through embodiments and in conjunction with the accompanying drawings. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0045] The serial numbers assigned to the components herein, such as "first", "second", etc., are only used to distinguish the described objects and do not have any sequential or technical meanings. The terms "connection" and "coupling" used in this application, unless otherwise specifically stated, both include direct and indirect connection (coupling). In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present invention.

[0046] In the present invention, unless otherwise clearly specified and defined, the first feature being "on" or "under" the second feature may be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on top of" the second feature may be that the first feature is directly above or obliquely above the second feature, or merely indicates that the first feature has a higher horizontal height than the second feature. The first feature being "under", "below" and "beneath" the second feature may be that the first feature is directly below or obliquely below the second feature, or merely indicates that the first feature has a lower horizontal height than the second feature.

[0047] Such as Figures 1 - 10As shown in the figure, a deflagration venting mechanism of a barrel-type pulse dust removal device includes a deflagration venting chamber 100, a deflagration venting disc 200, a first acquisition module, a first driving assembly 300 and a controller. One end of the deflagration venting chamber 100 is provided with a square port 110, and the square port 110 is connected to the deflagration venting port of the barrel-type pulse dust removal device 1000. The deflagration venting disc 200 is arranged between the square port 110 and the deflagration venting port. An annular deflagration venting groove 210 is formed on the end face of the deflagration venting disc 200. The diameter of the annular deflagration venting groove 210 is larger than the width of the square port 110. The annular deflagration venting groove 210 includes a plurality of deep arc grooves and a plurality of shallow arc grooves. The plurality of deep arc grooves and the plurality of shallow arc grooves are alternately and smoothly connected to form a ring. The first acquisition module is arranged inside the barrel-type pulse dust removal device 1000, and the first acquisition module is used to acquire the dust concentration inside the barrel-type pulse dust removal device 1000. The first driving assembly 300 is arranged between the square port 110 and the deflagration venting port, and the first driving assembly 300 is used to drive the deflagration venting disc 200 to rotate around the axis of the annular deflagration venting groove 210. The controller is configured to receive the dust concentration acquired by the first acquisition module, control the first driving assembly 300 to drive the deflagration venting disc 200 to rotate around the axis of the annular deflagration venting groove 210. When the dust concentration inside the barrel-type pulse dust removal device 1000 is less than or equal to a first preset concentration, the controller controls the first driving assembly 300 to rotate so that the part of the annular deflagration venting groove 210 not blocked by the square port 110 is a deep arc groove. When the dust concentration inside the barrel-type pulse dust removal device 1000 is greater than the first preset concentration, the controller controls the first driving assembly 300 to rotate so that the part of the annular deflagration venting groove 210 not blocked by the square port 110 is a shallow arc groove.

[0048] It can be understood that since the part of the annular deflagration venting groove 210 not blocked by the square port 110 is not supported by the square port 110, if an explosion occurs inside the barrel-type pulse dust removal device 1000 and the intensity of the explosion can blast open the deflagration venting disc 200, then the position where the deflagration venting disc 200 is blasted open must be the part of the annular deflagration venting groove 210 not blocked by the square port 110.

[0049] During the operation of the cylindrical pulse dust removal device 1000, the first acquisition module automatically detects the dust concentration inside the cylindrical pulse dust removal device 1000. If the dust concentration is less than or equal to the first preset concentration, after receiving the dust concentration signal acquired by the first acquisition module, the controller controls the first driving component 300 to drive the explosion vent disc 200 to rotate around the axis of the annular explosion vent groove 210, so that the part of the annular explosion vent groove 210 not blocked by the square port 110 is a deep arc groove. At this time, if an explosion occurs inside the cylindrical pulse dust removal device 1000, the energy generated by the explosion will exert a large pressure on the explosion vent disc 200. Since the part of the annular explosion vent groove 210 not blocked by the square port 110 is a deep arc groove at this time, after absorbing a certain amount of energy, the deep arc groove position of the explosion vent disc 200 will be blown open. At this time, the energy generated by the explosion enters the explosion vent chamber 100 along the opened opening, thereby reducing the energy remaining inside the cylindrical pulse dust removal device 1000 and preventing the components inside the cylindrical pulse dust removal device 1000 from being damaged.

[0050] If the dust concentration inside the cylindrical pulse dust removal device 1000 is greater than the first preset concentration, after receiving the dust concentration signal acquired by the first acquisition module, the controller controls the first driving component 300 to drive the explosion vent disc 200 to rotate around the axis of the annular explosion vent groove 210, so that the part of the annular explosion vent groove 210 not blocked by the square port 110 is a shallow arc groove. At this time, if an explosion occurs inside the cylindrical pulse dust removal device 1000, the energy generated by the explosion will exert a huge pressure on the explosion vent disc 200. Since the part of the annular explosion vent groove 210 not blocked by the square port 110 is a shallow arc groove at this time, the explosion vent disc 200 needs to absorb more energy than before before the position of the shallow arc groove of the explosion vent disc 200 will be blown open. Then, the energy generated by the explosion enters the explosion vent chamber 100 along the opened opening of the explosion vent disc 200, thereby reducing the energy inside the cylindrical pulse dust removal device 1000 and preventing the components inside the cylindrical pulse dust removal device 1000 from being damaged due to the explosion.

[0051] It can be understood that by providing a deep arc groove and a shallow arc groove on the end face of the explosion venting sheet 200, the present invention can automatically adjust the depth of the arc groove not blocked by the square port 110 according to the dust concentration inside the barrel - type pulse dust collector 1000, so that when the dust concentration is greater than the first preset value or less than or equal to the first preset value, the explosion venting sheet 200 can be exploded to form an opening, and when the dust concentration is greater than the first preset value, the energy consumed to explode an opening in the explosion venting sheet 200 is greater than the energy consumed to explode an opening in the explosion venting sheet 200 when the dust concentration is less than or equal to the first preset value. In this way, the function of the explosion venting sheet 200 can be fully exerted, which can not only prevent a large amount of energy from remaining inside the barrel - type pulse dust collector 1000 and being unable to be released outward, but also prevent too little energy from being absorbed when the explosion venting sheet 200 explodes, resulting in too much energy entering the explosion venting chamber 100 and exploding the explosion venting chamber 100.

[0052] It should also be supplemented that the first driving component 300 includes a motor 310, a driving gear, and a gear ring 320. The motor 310 is arranged outside the square port 110. The output end of the motor 310 is coaxially and fixedly connected to the driving gear. The gear ring 320 is arranged on the outer side surface of the explosion venting sheet 200 and the gear ring 320 is coaxial with the annular explosion venting groove 210. The gear ring 320 meshes with the driving gear.

[0053] In the working state of the barrel - type pulse dust collector 1000, the motor 310 is in a standby state. After receiving the electrical signal transmitted by the first acquisition module, the motor 310 drives the gear ring 320 to rotate through the driving gear, and the gear ring 320 drives the explosion venting sheet 200 to rotate around the axis of the annular explosion venting groove 210, so that the part of the annular explosion venting groove 210 not blocked by the square port 110 can be switched between the deep arc groove and the shallow arc groove.

[0054] It should also be supplemented that the first acquisition module is a dust concentration sensor.

[0055] In a further embodiment, as Figure 4 shown, a blasting port 120 is opened at the bottom of the explosion venting chamber 100. The blasting port 120 faces downward. A blasting plate 130 is fixedly arranged in the blasting port 120. The pressure threshold that the blasting plate 130 can withstand is less than the pressure threshold that the explosion venting chamber 100 can withstand.

[0056] If the energy generated by the explosion is relatively large, then the energy entering the interior of the explosion venting chamber 100 is still relatively large. When the pressure generated by the explosion energy is greater than the pressure threshold that the blasting plate 130 can withstand, the blasting plate 130 is forced to explode. Since the blasting port 120 opens downward, the energy generated by the explosion is not likely to cause harm to personnel.

[0057] In a further embodiment, as Figure 5As shown, a cutting assembly 400 is further provided in the explosion venting bin 100. The cutting assembly 400 is used to cut a straight groove on the upper surface of the explosion-proof plate 130.

[0058] Cutting a straight groove on the surface of the explosion-proof plate 130 makes the explosion-proof plate 130 easier to explode, which can prevent other positions of the explosion venting bin 100 from being exploded, so that the energy generated by the explosion is all directed towards the ground and is not likely to cause harm to personnel.

[0059] In a further embodiment, the depth of the straight groove is positively correlated with the pressure in the explosion venting bin 100.

[0060] When the pressure in the explosion venting bin 100 is relatively small, the depth of the straight groove cut by the cutting assembly 400 on the upper surface of the explosion-proof plate 130 is shallow at this time. Even if the explosion-proof plate 130 is not exploded, the explosion venting bin 100 is not likely to be exploded. When the pressure in the explosion venting bin 100 is relatively large, the depth of the straight groove cut by the cutting assembly 400 on the upper surface of the explosion-proof plate 130 is deep at this time. At this time, the explosion-proof plate 130 is easy to explode. After the explosion-proof plate 130 is exploded, the energy generated by the explosion is ejected towards the ground, thereby preventing the corner positions of the explosion venting bin 100 from being exploded due to stress concentration.

[0061] In a further embodiment, as Figure 8 , Figure 9 and Figure 10 shown, the cutting assembly 400 includes a moving plate 410, a cutting tool 420, and a corrugated pipe 430. One end of the corrugated pipe 430 is connected to the inner wall of the explosion venting bin 100 on the side away from the explosion venting piece 200. The axis of the corrugated pipe 430 coincides with the axis of the annular explosion venting groove 210. The other end of the corrugated pipe 430 is fixedly connected to the moving plate 410. The moving plate 410 can move along the axis of the annular explosion venting groove 210. A cutting tool 420 is provided at the lower part of the moving plate 410. The cutting tool 420 abuts against the upper surface of the explosion-proof plate 130. The explosion-proof plate 130 is arranged to be inclined upward from the end close to the explosion venting piece 200 towards the end away from the explosion venting piece 200.

[0062] After the part of the annular explosion relief groove 210 not blocked by the square port 110 is blown open, the energy generated by the explosion enters the interior of the explosion relief chamber 100. The energy generated by the explosion pushes the moving plate 410 to move along the axis of the annular explosion relief groove 210 in a direction away from the explosion relief sheet 200. At this time, the moving plate 410 drives the cutting knife 420 to move synchronously. Since the cutting knife 420 abuts against the upper surface of the blasting plate 130, the moving plate 410 drives the cutting knife 420 to move synchronously during the movement, thereby cutting a straight groove on the upper surface of the blasting plate 130. And because the blasting plate 130 is arranged to incline upward from the end close to the explosion relief sheet 200 to the end away from the explosion relief sheet 200, the greater the energy generated by the explosion, the farther the moving plate 410 moves, and the deeper the straight groove cut by the cutting knife 420 on the blasting plate 130 is.

[0063] In a further embodiment, as Figure 5 、 Figure 8 and Figure 10 shown, a plurality of spray holes 411 are formed on the outer peripheral surface of the moving plate 410. The plurality of spray holes 411 are communicated with the inside of the corrugated pipe 430, and the inside of the corrugated pipe 430 stores coolant.

[0064] When the energy generated by the explosion pushes the moving plate 410 to move along the axis of the annular explosion relief groove 210 in a direction away from the explosion relief sheet 200, the corrugated pipe 430 is squeezed by the force, so the coolant in the corrugated pipe 430 is extruded out through the spray holes 411, thereby cooling the interior of the explosion relief chamber 100 to reduce the pressure inside the explosion relief chamber 100.

[0065] It should also be added that a pressure valve is provided at the connection between the corrugated pipe 430 and the plurality of spray holes 411. The pressure valve is configured to open when the pressure inside the corrugated pipe 430 reaches a set pressure, so that the corrugated pipe 430 is communicated with the plurality of spray holes 411, thereby spraying the coolant into the explosion relief chamber 100.

[0066] In a further embodiment, as Figure 4 shown, a damping assembly 500 is provided between the explosion relief sheet 200 and the explosion relief chamber 100. The damping assembly 500 is used to absorb the heat generated by the explosion, thereby reducing the pressure inside the explosion relief chamber 100.

[0067] In a further embodiment, as Figure 5As shown in the figure, the damping assembly 500 includes a damping cylinder 510, a damping rod 520, and a damping piston 530. The damping cylinder 510 is disposed on the rupture disc 200. The damping cylinder 510 is filled with damping fluid. The axis of the damping cylinder 510 coincides with the axis of the annular rupture groove 210. The damping piston 530 is slidably connected within the damping cylinder 510. A plurality of damping holes 531 are formed in the damping piston 530. The damping holes 531 penetrate through the damping piston 530 along the axis of the damping piston 530. The damping rod 520 is fixedly connected to the damping piston 530 coaxially, and the end of the damping rod 520 away from the damping piston 530 is connected to the side surface of the moving plate 410 away from the bellows 430.

[0068] After the rupture disc 200 is exploded, under the high pressure generated by the explosion, the moving plate 410 drives the damping rod 520 to move towards the direction close to the bellows 430. Then, the damping fluid in the damping cylinder 510 flows within the damping cylinder 510 through the damping holes 531. At this time, the damping fluid and the wall of the damping holes 531 rub against each other to consume energy, so as to reduce the energy generated by the explosion, thereby reducing the pressure within the explosion relief chamber 100.

[0069] It should also be further explained that the strength of the part of the rupture disc 200 connected to the damping cylinder 510 is higher than that of other parts of the rupture disc 200, so as to prevent the part of the rupture disc 200 connected to the damping cylinder 510 from being exploded and causing the damping fluid inside the damping cylinder 510 to flow out.

[0070] In a further embodiment, as Figure 4 shown, a guiding assembly is provided between the moving plate 410 and the inner wall of the explosion relief chamber 100. The guiding assembly is used to guide the movement of the moving plate 410, so that the moving plate 410 moves along the axis of the bellows 430.

[0071] The guiding assembly is provided to enable the moving plate 410 to move along the axis of the bellows 430, so that the damping piston 530 moves along the axis of the damping cylinder 510, and further enables the damping fluid to flow through the damping holes 531 to consume energy.

[0072] In a further embodiment, as Figure 6 and Figure 10 shown, the guiding assembly includes a guiding block 610 and a slider 620. The guiding block 610 is disposed on the inner peripheral wall of the explosion relief chamber 100. A sliding groove 611 is formed on the side surface of the guiding block 610. The sliding groove 611 extends along the axis direction of the bellows 430. The slider 620 is disposed on the outer side surface of the moving plate 410. The slider 620 is slidably connected within the sliding groove 611.

[0073] After the energy generated by the explosion enters the interior of the explosion relief chamber 100, the air pressure inside the explosion relief chamber 100 pushes the moving plate 410 together with the guiding block 610 to slide along the sliding groove 611.

[0074] It should also be noted that there should be a large frictional force between the chute 611 and the slider 620, so that more energy can be consumed when the slider 620 slides along the chute 611, in order to reduce the pressure in the explosion relief bin 100.

[0075] The technical features of the above embodiments can be combined arbitrarily. For the sake of brevity of description, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, it should be considered as the scope described in this specification.

[0076] The above-described embodiments only represent several implementation manners of the present invention, and the description thereof is relatively specific and detailed, but it should not be construed as a limitation to the scope of the present invention. It should be pointed out that for those of ordinary skill in the art, without departing from the concept of the present invention, several modifications and improvements can still be made, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

Claims

1. An explosion relief mechanism for a cylindrical pulse dust removal device, characterized in that: include: An explosion venting chamber, one end of which is provided with a square port, which is connected to the explosion venting port of the cylindrical pulse dust removal device; An explosion venting piece is arranged between the square port and the explosion venting port, an annular explosion venting groove is provided on the end surface of the explosion venting piece, the diameter of the annular explosion venting groove is greater than the width of the square port, the annular explosion venting groove includes a plurality of deep arc grooves and a plurality of shallow arc grooves, and the plurality of deep arc grooves and the plurality of shallow arc grooves are alternately and smoothly connected to form a ring; A first acquisition module, the first acquisition module is arranged in the cylindrical pulse dust removal device, and the first acquisition module is used to obtain the dust concentration in the cylindrical pulse dust removal device; A first drive assembly, the first drive assembly is arranged between the square port and the explosion relief port, and the first drive assembly is used to drive the explosion relief piece to rotate around the axis of the annular explosion relief groove; the first drive assembly includes a motor, a driving gear and a gear ring, the motor is arranged outside the square port, the output end of the motor is coaxially fixedly connected with the driving gear, the gear ring is arranged on the outer surface of the explosion relief piece and the gear ring is coaxial with the annular explosion relief groove, and the gear ring is meshed with the driving gear; a controller, the controller is configured to receive the dust concentration obtained by the first acquisition module, and control the first drive assembly to drive the explosion relief piece to rotate around the axis of the annular explosion relief groove; When the dust concentration in the cylindrical pulse dust removal device is less than or equal to the first preset concentration, the controller controls the first driving assembly to rotate so that the portion of the annular explosion relief groove that is not blocked by the square port is a deep arc groove; When the dust concentration in the cylindrical pulse dust removal device is greater than a first preset concentration, the controller controls the first driving assembly to rotate so that the portion of the annular explosion relief groove that is not blocked by the square port is a shallow arc groove.

2. The explosion relief mechanism of a cylindrical pulse dust removal device according to claim 1 is characterized in that: A blasting port is provided at the bottom of the explosion venting chamber, the blasting port faces downward, a blasting plate is fixedly arranged in the blasting port, and a pressure threshold that the blasting plate can withstand is smaller than a pressure threshold that the explosion venting chamber can withstand.

3. The explosion relief mechanism of a cylindrical pulse dust removal device according to claim 2 is characterized in that: A cutting assembly is also provided in the explosion relief chamber, and the cutting assembly is used to cut a linear groove on the upper surface of the blasting plate.

4. The explosion relief mechanism of a cylindrical pulse dust removal device according to claim 3 is characterized in that: The depth of the linear groove is positively correlated with the pressure in the explosion relief chamber.

5. The explosion relief mechanism of a cylindrical pulse dust removal device according to claim 3 is characterized in that: The cutting assembly includes a movable plate, a cutter and a bellows, one end of the bellows is connected to the inner wall of the explosion venting chamber away from the explosion venting plate, the axis of the bellows coincides with the axis of the annular explosion venting groove, the other end of the bellows is fixedly connected to the movable plate, the movable plate can move along the axis of the annular explosion venting groove, the lower part of the movable plate is provided with a cutter, and the cutter abuts against the upper surface of the blasting plate; The blasting plate is arranged to be inclined upward from an end close to the explosion relief piece to an end away from the explosion relief piece.

6. The explosion relief mechanism of a cylindrical pulse dust removal device according to claim 5, characterized in that: A plurality of spray holes are provided on the outer peripheral surface of the movable plate, and the plurality of spray holes are connected with the inside of the bellows, and the inside of the bellows stores cooling liquid.

7. The explosion relief mechanism of a cylindrical pulse dust removal device according to claim 5, characterized in that: A damping component is provided between the explosion venting piece and the explosion venting chamber, and the damping component is used to absorb the heat generated by the explosion.

8. The explosion relief mechanism of a cylindrical pulse dust removal device according to claim 7, characterized in that: The damping assembly includes a damping cylinder, a damping rod and a damping piston. The damping cylinder is arranged on the explosion-proof plate. The damping cylinder is filled with damping fluid. The axis of the damping cylinder coincides with the axis of the annular explosion-proof groove. The damping piston is slidably connected in the damping cylinder. A plurality of damping holes are provided on the damping piston. The damping holes penetrate the damping piston along the axis of the damping piston. The damping rod is coaxially fixedly connected to the damping piston, and one end of the damping rod away from the damping piston is connected to the side surface of the moving plate away from the bellows.

9. The explosion relief mechanism of a cylindrical pulse dust removal device according to claim 5, characterized in that: A guide assembly is provided between the movable plate and the inner wall of the explosion relief chamber, and the guide assembly is used to guide the movement of the movable plate so that the movable plate moves along the axis of the bellows.

10. The explosion relief mechanism of a cylindrical pulse dust removal device according to claim 9, characterized in that: The guide assembly includes a guide block and a slider. The guide block is arranged on the inner wall of the explosion relief chamber. A slide groove is opened on the side of the guide block. The slide groove extends along the axial direction of the bellows. The slider is arranged on the outer side of the movable plate and is slidably connected in the slide groove.

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