Explosion venting mechanism of cylindrical pulse dust removal device

Abstract

The invention relates to the technical field of dust removal equipment, in particular to an explosion venting mechanism of a cylindrical pulse dust removal device.The explosion venting mechanism comprises an explosion venting bin, an explosion venting piece, a first obtaining module, a first driving assembly and a controller, and a square port is formed in one end of the explosion venting bin and connected with an explosion venting port of the cylindrical pulse dust removal device; and the explosion venting sheet is arranged between the square port and the explosion venting port. The deep arc groove and the shallow arc groove are formed in the end face of the explosion venting piece, the depth of the arc groove which is not shielded by the square end opening can be automatically adjusted according to the dust concentration in the barrel type pulse dust removal device, so that when the dust concentration is larger than a first preset value or smaller than or equal to the first preset value, the explosion venting piece can be exploded to form an opening, and the explosion venting effect is improved. In this way, the effect of the explosion venting piece can be fully exerted, the situation that more energy still remains in the barrel type pulse dust removal device and cannot be released outwards is prevented, and the situation that the explosion venting bin explodes due to the fact that the energy absorbed by the explosion venting piece during explosion is too little is also prevented.

Description

Technical Field

[0001] The invention relates to the technical field of dust removal equipment, in particular to an explosion relief mechanism of a cylindrical pulse dust removal device. Background Art

[0002] The explosion relief mechanism of the dust removal device is an important safety device designed to prevent serious accidents caused by dust explosions. The following conditions must be met for a dust explosion to occur in a dust removal device: first, the dust inside the dust removal device is combustible dust; second, the concentration of combustible dust reaches the concentration within the explosion limit; third, the combustible dust is suspended inside the dust removal device; fourth, air enters the dust collector; fifth, an ignition source enters the dust removal device, and the ignition source includes but is not limited to open flames, electric sparks, electrostatic discharge, and friction sparks. The explosion relief mechanism can quickly release the high-pressure and high-temperature gas generated by the explosion, thereby reducing damage to the equipment itself and harm to the surrounding environment and personnel.

[0003] The existing explosion relief mechanism is usually installed at the explosion relief port of the dust removal device. The explosion relief plate is tightly attached to and blocks the explosion relief port of the dust removal device. The explosion relief plate has a preset pressure threshold. When the high pressure generated by the dust removal device explodes exceeds this threshold, the explosion relief plate will rupture. At this time, the high-temperature and high-pressure gas inside the dust removal device will enter the explosion relief mechanism. In this way, the high-temperature and high-pressure gas will not explode violently in the dust removal device, and the outer casing, wall panels, filter bags, filter cartridges, fans and other mechanisms of the dust removal device can be effectively protected from damage. However, the existing explosion relief devices have the following problems when in use: if an explosion relief piece with a relatively small pressure threshold is selected, although the explosion relief piece is easily blown up when an explosion occurs inside the dust removal device, the energy absorbed by the explosion relief piece is relatively small. At this time, there will still be more energy to explode inside the dust removal device and the explosion relief mechanism. When the energy of the explosion is large, it can even blow up the explosion relief mechanism. If an explosion relief piece with a relatively large pressure threshold is selected, although the energy required to absorb the explosion relief piece to be blown up is large, if the explosion relief piece is not blown up, the explosion will still only occur inside the dust removal device, and the energy generated by the explosion cannot be dispersed into the explosion relief mechanism, which can easily cause damage to the components inside the dust removal device. Summary of the invention

[0004] Based on this, it is necessary to provide an explosion relief mechanism for a cylindrical pulse dust removal device in order to solve the problem of low adaptability of the explosion relief plates of the existing explosion relief mechanism in view of the problems existing in the current explosion relief mechanism.

[0005] The above purpose is achieved through the following technical solutions: An explosion relief mechanism of a cylindrical pulse dust removal device comprises: 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 driving assembly, the first driving assembly is arranged between the square port and the explosion relief port, and the first driving assembly is used to drive the explosion relief plate to rotate around the axis of the annular explosion relief groove; A controller, the controller is configured to receive the dust concentration acquired by the first acquisition module, and control the first drive assembly to drive the explosion venting plate to rotate around the axis of the annular explosion venting 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.

[0006] In one embodiment, 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.

[0007] In one of the embodiments, a cutting assembly is further provided in the explosion venting chamber, and the cutting assembly is used to cut a linear groove on the upper surface of the blasting plate.

[0008] In one of the embodiments, the depth of the linear groove is positively correlated with the pressure in the explosion venting chamber.

[0009] In one embodiment, 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.

[0010] 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.

[0011] 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.

[0012] 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.

[0013] 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.

[0014] 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.

[0015] The beneficial effects of the present invention are: 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

[0016] Figure 1 It is the whole of the explosion relief mechanism of a cylindrical pulse dust removal device of the present invention; Figure 2 It is a structural schematic diagram of an explosion venting bin in a cylindrical pulse dust removal device of the present invention; Figure 3 It is a side view of a drum-type pulse dust removal device of the present invention; Figure 4 for Figure 3 Middle AA section view; Figure 5It is a schematic diagram of the contraction state of the bellows in the explosion relief mechanism of a cylindrical pulse dust removal device of the present invention; Figure 6 It is a structural schematic diagram of a square port in an explosion relief mechanism of a cylindrical pulse dust removal device of the present invention; Figure 7 for Figure 6 Side view of Figure 8 for Figure 4 Schematic diagram of the enlarged structure at B in the middle; Fig. 9 for Figure 5 Schematic diagram of the enlarged structure at C in the middle; Fig.10 The present invention is a schematic structural diagram of a cutting assembly in an explosion relief mechanism of a cylindrical pulse dust removal device.

[0017] in: 100, explosion vent; 110, square port; 120, blasting port; 130, blasting plate; 200, explosion relief piece; 210, annular explosion relief groove; 300, first driving assembly; 310, motor; 320, ring gear; 400, cutting assembly; 410, moving plate; 411, spray hole; 420, cutter; 430, bellows; 500, damping assembly; 510, damping cylinder; 520, damping rod; 530, damping piston; 531, damping hole; 610, guide block; 611, slide groove; 620, slider; 1000. Cylindrical pulse dust removal device. DETAILED DESCRIPTION

[0018] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is 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.

[0019] The serial numbers assigned to the components herein, such as "first", "second", etc., are only used to distinguish the objects described and do not have any order or technical meaning. The "connection" and "coupling" mentioned in this application, unless otherwise specified, include direct and indirect connections (couplings). In the description of the present invention, it should be understood that the orientation or position relationship indicated by the terms "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", etc. are based on the orientation or position relationship shown in the accompanying drawings, which 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.

[0020] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean 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, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0021] like Figure 1-Figure 10As shown, an explosion relief mechanism of a cylindrical pulse dust removal device includes an explosion relief chamber 100, an explosion relief piece 200, a first acquisition module, a first drive assembly 300 and a controller. A square port 110 is provided at one end of the explosion relief chamber 100, and the square port 110 is connected to the explosion relief port of the cylindrical pulse dust removal device 1000. The explosion relief piece 200 is arranged between the square port 110 and the explosion relief port. An annular explosion relief groove 210 is provided on the end surface of the explosion relief piece 200. The diameter of the annular explosion relief groove 210 is greater than the width of the square port 110. The annular explosion relief groove 210 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. The first acquisition module is arranged in the cylindrical pulse dust removal device 1000. The first acquisition module is used to obtain the dust concentration in the cylindrical pulse dust removal device 1000. The first drive assembly 300 The component 300 is arranged between the square port 110 and the explosion-relief port. The first drive component 300 is used to drive the explosion-relief plate 200 to rotate around the axis of the annular explosion-relief groove 210. The controller is configured to receive the dust concentration obtained by the first acquisition module, and control the first drive component 300 to drive the explosion-relief plate 200 to rotate around the axis of the annular explosion-relief groove 210. When the dust concentration in the cylindrical pulse dust removal device 1000 is less than or equal to the first preset concentration, the controller controls the first drive component 300 to rotate so that the portion of the annular explosion-relief groove 210 not blocked by the square port 110 is a deep arc groove. When the dust concentration in the cylindrical pulse dust removal device 1000 is greater than the first preset concentration, the controller controls the first drive component 300 to rotate so that the portion of the annular explosion-relief groove 210 not blocked by the square port 110 is a shallow arc groove.

[0022] It can be understood that the portion of the annular explosion-relief groove 210 that is not blocked by the square port 110 is not supported by the square port 110. Therefore, if an explosion occurs inside the cylindrical pulse dust removal device 1000 and the intensity of the explosion is sufficient to blow up the explosion-relief plate 200, then the position where the explosion-relief plate 200 is blown up must be the portion of the annular explosion-relief groove 210 that is not blocked by the square port 110.

[0023] During the operation of the cylindrical pulse dust removal device 1000, the first acquisition module automatically detects the dust concentration in the cylindrical pulse dust removal device 1000. If the dust concentration is less than or equal to the first preset concentration, the controller controls the first drive assembly 300 to drive the explosion relief plate 200 to rotate around the axis of the annular explosion relief groove 210 after receiving the dust concentration signal obtained by the first acquisition module, so that the portion of the annular explosion relief groove 210 not blocked by the square port 110 is a deep arc groove. At this time, if the cylindrical pulse dust removal device 1000 is If an explosion occurs in the explosion-proof part, the energy generated by the explosion will generate greater pressure on the explosion-proof plate 200. Since the part of the annular explosion-proof groove 210 that is not blocked by the square port 110 is a deep arc groove, the deep arc groove position of the explosion-proof plate 200 is blown open after absorbing a certain amount of energy. At this time, the energy generated by the explosion enters the explosion-proof chamber 100 along the blown-open hole, thereby reducing the energy remaining in the cylindrical pulse dust collector 1000 and preventing damage to the internal parts of the cylindrical pulse dust collector 1000.

[0024] If the dust concentration in the cylindrical pulse dust removal device 1000 is greater than the first preset concentration, the controller controls the first drive assembly 300 to drive the explosion-proof plate 200 to rotate around the axis of the annular explosion-proof groove 210 after receiving the dust concentration signal obtained by the first acquisition module, so that the portion of the annular explosion-proof 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 produce huge pressure on the explosion-proof plate 200. Since the portion of the annular explosion-proof groove 210 not blocked by the square port 110 is a shallow arc groove at this time, the explosion-proof plate 200 needs to absorb more energy than before before the position of the shallow arc groove of the explosion-proof plate 200 will be blown open. Therefore, the energy generated by the explosion enters the explosion-proof bin 100 along the blown-open hole of the explosion-proof plate 200, thereby reducing the energy inside the cylindrical pulse dust removal device 1000 and preventing the internal components of the cylindrical pulse dust removal device 1000 from being damaged by the explosion.

[0025] It can be understood that 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 cylindrical pulse dust removal device 1000 by arranging deep arc grooves and shallow arc grooves on the end face of the explosion-proof plate 200, 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-proof plate 200 can be blown open, and when the dust concentration is greater than the first preset value, the energy consumed to blow a hole in the explosion-proof plate 200 is greater than the energy consumed to blow a hole in the explosion-proof plate 200 when the dust concentration is less than or equal to the first preset value. In this way, the role of the explosion-proof plate 200 can be fully exerted, which can not only prevent the cylindrical pulse dust removal device 1000 from retaining a large amount of energy and being unable to be released to the outside, but also prevent the explosion-proof plate 200 from absorbing too little energy during the explosion, resulting in excessive energy entering the explosion-proof bin 100 and exploding the explosion-proof bin 100.

[0026] It should also be noted that the first drive assembly 300 includes a motor 310, a driving gear and a ring gear 320. The motor 310 is arranged on the outside of the square port 110, and the output end of the motor 310 is coaxially fixedly connected to the driving gear. The ring gear 320 is arranged on the outer surface of the explosion-proof plate 200 and the ring gear 320 is coaxial with the annular explosion-proof groove 210, and the ring gear 320 is meshed with the driving gear.

[0027] When the cylindrical pulse dust removal device 1000 is in working state, the motor 310 is in standby state. After receiving the electrical signal transmitted by the first acquisition module, the motor 310 drives the ring gear 320 to rotate through the driving gear, and the ring gear 320 drives the explosion-relief plate 200 to rotate around the axis of the annular explosion-relief groove 210, so that the part of the annular explosion-relief groove 210 that is not blocked by the square port 110 can switch between a deep arc groove and a shallow arc groove.

[0028] It should also be noted that the first acquisition module is a dust concentration sensor.

[0029] In a further embodiment, Figure 4 As shown, a blasting port 120 is provided 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 , and the pressure threshold that the blasting plate 130 can withstand is smaller than the pressure threshold that the explosion venting chamber 100 can withstand.

[0030] If the energy generated by the explosion is large, the energy entering the explosion venting chamber 100 is still 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 easy to cause harm to personnel.

[0031] In a further embodiment, Figure 5As shown, a cutting assembly 400 is further provided in the explosion venting chamber 100 , and the cutting assembly 400 is used to cut a linear groove on the upper surface of the blasting plate 130 .

[0032] A linear groove is cut on the surface of the blasting plate 130, so that the blasting plate 130 is easier to be blown open, and other positions of the explosion venting chamber 100 can be prevented from being blown open, so that the energy generated by the explosion is all directed toward the ground, which is not easy to cause harm to personnel.

[0033] In a further embodiment, the depth of the linear groove is positively correlated with the pressure in the explosion venting chamber 100 .

[0034] When the pressure in the explosion venting chamber 100 is relatively small, the depth of the straight groove cut by the cutting assembly 400 on the upper surface of the blasting plate 130 is shallow. At this time, even if the blasting plate 130 is not blown up, the explosion venting chamber 100 is not easily blown up. When the pressure in the explosion venting chamber 100 is relatively large, the depth of the straight groove cut by the cutting assembly 400 on the upper surface of the blasting plate 130 is deep. At this time, the blasting plate 130 is easily blown up. When the blasting plate 130 is blown up, the energy generated by the explosion is ejected toward the ground, thereby preventing the corners of the explosion venting chamber 100 from being blown up due to stress concentration.

[0035] In a further embodiment, Figure 8 , Fig. 9 and Fig.10 As shown, the cutting assembly 400 includes a movable plate 410, a cutter 420 and a bellows 430, one end of the bellows 430 is connected to the inner wall of the explosion venting chamber 100 away from the explosion venting piece 200, the axis of the bellows 430 coincides with the axis of the annular explosion venting groove 210, the other end of the bellows 430 is fixedly connected to the movable plate 410, the movable plate 410 can move along the axis of the annular explosion venting groove 210, a cutter 420 is provided at the lower part of the movable plate 410, the cutter 420 abuts against the upper surface of the blasting plate 130, and the blasting plate 130 is tilted upward from the end close to the explosion venting piece 200 to the end away from the explosion venting piece 200.

[0036] When the portion of the annular explosion-proof groove 210 that is not blocked by the square port 110 is blown open, the energy generated by the explosion enters the explosion-proof chamber 100, and the energy generated by the explosion pushes the movable plate 410 to move along the axis of the annular explosion-proof groove 210 in a direction away from the explosion-proof plate 200. At this time, the movable plate 410 drives the cutter 420 to move synchronously. Since the cutter 420 abuts against the upper surface of the blasting plate 130, the movable plate 410 drives the cutter 420 to move synchronously during the movement, thereby cutting a straight groove on the upper surface of the blasting plate 130. Moreover, since the blasting plate 130 is tilted upward from the end close to the explosion-proof plate 200 to the end away from the explosion-proof plate 200, the greater the energy generated by the explosion, the farther the movable plate 410 moves, and the deeper the depth of the straight groove cut by the cutter 420 on the blasting plate 130 is.

[0037] In a further embodiment, Figure 5 , Figure 8 and Fig.10 As shown, a plurality of spray holes 411 are provided on the outer peripheral surface of the movable plate 410 , and the plurality of spray holes 411 are connected to the interior of the bellows 430 , and the bellows 430 stores coolant inside.

[0038] When the energy generated by the explosion pushes the movable plate 410 to move along the axis of the annular explosion venting groove 210 in a direction away from the explosion venting plate 200, the bellows 430 is squeezed by force, so that the coolant in the bellows 430 is squeezed outward through the spray hole 411, so that the coolant cools the inside of the explosion venting chamber 100 to reduce the pressure inside the explosion venting chamber 100.

[0039] It should also be noted that a pressure valve is provided at the connection point between the bellows 430 and the plurality of spray holes 411 , and the pressure valve is configured so that when the pressure inside the bellows 430 reaches a set pressure, the pressure valve can open to connect the bellows 430 and the plurality of spray holes 411 , thereby spraying the coolant into the explosion venting chamber 100 .

[0040] In a further embodiment, Figure 4 As shown, a damping assembly 500 is provided between the explosion venting sheet 200 and the explosion venting chamber 100 . The damping assembly 500 is used to absorb the heat generated by the explosion, thereby reducing the pressure inside the explosion venting chamber 100 .

[0041] In a further embodiment, Figure 5As shown, the damping assembly 500 includes a damping cylinder 510, a damping rod 520 and a damping piston 530. The damping cylinder 510 is arranged on the explosion-proof plate 200. The damping cylinder 510 is filled with damping fluid. The axis of the damping cylinder 510 coincides with the axis of the annular explosion-proof groove 210. The damping piston 530 is slidably connected in the damping cylinder 510. A plurality of damping holes 531 are opened on the damping piston 530. The damping hole 531 penetrates the damping piston 530 along the axis of the damping piston 530. The damping rod 520 is coaxially fixedly connected with the damping piston 530, and one end of the damping rod 520 away from the damping piston 530 is connected to the side surface of the movable plate 410 away from the bellows 430.

[0042] When the explosion venting plate 200 is blown open, under the high pressure generated by the explosion, the movable plate 410 drives the damping rod 520 to move toward the direction close to the bellows 430, so that the damping fluid in the damping cylinder 510 flows in the damping cylinder 510 through the damping hole 531. At this time, the damping fluid and the hole wall of the damping hole 531 rub against each other to consume energy, so as to reduce the energy generated by the explosion, thereby reducing the pressure in the explosion venting chamber 100.

[0043] It should also be noted that the strength of the portion where the explosion venting plate 200 is connected to the damping cylinder 510 is higher than the strength of other portions of the explosion venting plate 200 to prevent the portion where the explosion venting plate 200 is connected to the damping cylinder 510 from being blown open and causing the damping fluid inside the damping cylinder 510 to flow out.

[0044] In a further embodiment, Figure 4 As shown, a guide assembly is provided between the moving plate 410 and the inner wall of the explosion venting chamber 100 , and the guide 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 .

[0045] The guide assembly is provided to enable the moving plate 410 to move along the axis of the bellows 430 , thereby enabling the damping piston 530 to move along the axis of the damping cylinder 510 , thereby enabling the damping fluid to flow along the damping hole 531 and consume energy.

[0046] In a further embodiment, Figure 6 and Fig.10 As shown, the guide assembly includes a guide block 610 and a slider 620. The guide block 610 is arranged on the inner circumferential wall of the explosion venting chamber 100. A slide groove 611 is opened on the side of the guide block 610. The slide groove 611 extends along the axial direction of the bellows 430. The slider 620 is arranged on the outer side of the movable plate 410, and the slider 620 is slidably connected in the slide groove 611.

[0047] After the energy generated by the explosion enters the explosion venting chamber 100 , the air pressure inside the explosion venting chamber 100 pushes the moving plate 410 and the guide block 610 to slide along the slide groove 611 .

[0048] It should also be noted that there should be a greater friction between the slide groove 611 and the slider 620 , so that the slider 620 can consume more energy when sliding along the slide groove 611 , so as to reduce the pressure in the explosion venting chamber 100 .

[0049] The technical features of the above embodiments may be combined arbitrarily. To make the description concise, 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, they should be considered to be within the scope of this specification.

[0050] The above-described embodiments only express several implementation methods of the present invention, and the description thereof is relatively specific and detailed, but it cannot be understood as limiting the scope of the present invention. It should be pointed out that, for a person of ordinary skill in the art, several modifications and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the attached 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 driving assembly, the first driving assembly is arranged between the square port and the explosion relief port, and the first driving assembly is used to drive the explosion relief plate to rotate around the axis of the annular explosion relief groove; A controller, the controller is configured to receive the dust concentration acquired by the first acquisition module, and control the first drive assembly to drive the explosion venting plate to rotate around the axis of the annular explosion venting 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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