A quick reset device for an explosion-proof valve

Abstract

The application discloses a quick reset device of an explosion-proof valve and relates to the technical field of explosion-proof valves, which comprises a valve body mechanism, a reset mechanism, an energy storage mechanism and a driving mechanism. The valve body mechanism comprises an explosion-proof valve and two reset pins symmetrically arranged on the two sides of the explosion-proof valve. The reset mechanism comprises a bidirectional cylinder arranged on the top of the explosion-proof valve and a connecting rod arranged between the reset pin and the movable end of the bidirectional cylinder. The energy storage mechanism comprises a box body arranged on the top of the explosion-proof valve and at least one spring arranged between the box body and the movable end of the bidirectional cylinder. The movable end of the bidirectional cylinder is slidably arranged in the box body. In the initial state, the movable end of the bidirectional cylinder is in the extended state and opens the reset pin through the connecting rod. The driving mechanism is used for restraining or releasing the movable end of the bidirectional cylinder. When the movable end of the bidirectional cylinder is released, the compressed spring releases the accumulated elastic potential energy to drive the movable end of the bidirectional cylinder to quickly contract. The control device can realize the instantaneous reset of the explosion-proof valve and greatly improve the operation safety of the dust remover.

Description

Technical Field

[0001] This invention relates to the field of explosion-proof valve technology, and more specifically, to a rapid reset device for explosion-proof valves. Background Technology

[0002] In existing technology, explosion-proof valves are mechanical valves specifically installed on the pipelines of dust collection systems. Their core function is to automatically close instantly when a dust explosion occurs inside a dust collector (such as a bag filter), thereby physically preventing the flames, shock waves, and high-temperature substances generated by the explosion from propagating through the pipeline to upstream production workshops (such as yarn processing and packaging workshops) or other connected equipment, avoiding secondary explosions or chain reactions, and controlling the explosion disaster within a localized area.

[0003] When the existing explosion-proof valve is triggered, two maintenance personnel are required to use a lift truck to raise it to the designated position. After going up, one person needs to leave the lifting platform fence, jump onto the windowsill, and cooperate with the personnel inside the fence to reset the explosion-proof valve, which poses a great safety hazard.

[0004] In summary, how to provide a rapid reset device for explosion-proof valves that can achieve instantaneous reset and greatly improve the operational safety of dust collectors is a problem that urgently needs to be solved by those skilled in the art. Summary of the Invention

[0005] In view of this, the purpose of the present invention is to provide a rapid reset device for explosion-proof valves, which can realize the instantaneous reset of explosion-proof valves and greatly improve the operational safety of dust collectors.

[0006] To achieve the above objectives, the present invention provides the following technical solution:

[0007] A rapid reset device for an explosion-proof valve, characterized in that it comprises:

[0008] The valve body mechanism includes an explosion-proof valve and two reset pins symmetrically arranged on both sides of the explosion-proof valve.

[0009] The reset mechanism includes a bidirectional cylinder and a connecting rod disposed on the top of the explosion-proof valve, the connecting rod being disposed between the reset pin and the movable end of the bidirectional cylinder;

[0010] An energy storage mechanism includes a housing located on top of the explosion-proof valve and at least one spring located between the housing and the movable end of the bidirectional cylinder. The movable end of the bidirectional cylinder is slidably located within the housing. In the initial state, the movable end of the bidirectional cylinder is in an extended state and the reset pin is opened by the connecting rod.

[0011] A drive mechanism is located on top of the explosion-proof valve. The drive mechanism is used to constrain or release the movable end of the bidirectional cylinder. When the movable end of the bidirectional cylinder is released, the compressed spring releases its stored elastic potential energy to drive the movable end of the bidirectional cylinder to retract rapidly.

[0012] The control device is connected to both the bidirectional cylinder and the drive mechanism.

[0013] In one embodiment, the drive mechanism includes a support frame disposed on the top of the explosion-proof valve, a drive shaft rotatably passing through the front side of the support frame, two guide rods symmetrically disposed on the front side of the support frame, two flexible belts, two toothed plates symmetrically meshing on one side of the drive shaft, and a cylinder, wherein the cylinder is disposed between the inner bottom surface of the support frame and the bottom of the toothed plate.

[0014] One end of the flexible belt is wrapped around the outer periphery of the drive shaft, and the other end of the flexible belt passes around the outside of the guide rod and is connected to the movable end of the bidirectional cylinder.

[0015] In one embodiment, a temperature sensor is also provided on the top of the explosion-proof valve, and the temperature sensor is connected to the control device.

[0016] In one embodiment, the housing is provided with three guide rods, which are distributed through the movable ends of the spring and the bidirectional cylinder.

[0017] In one embodiment, the three guide rods are distributed at equal intervals and are arranged radially along the drive shaft.

[0018] In one embodiment, the support is fitted to the rear side of the cylinder of the bidirectional cylinder, and the support comprises a metal component.

[0019] In one embodiment, the drive shaft includes a tube, a wheel at one end of the tube, and a plurality of racks at the other end of the tube. The wheel is suspended above the top of the bidirectional cylinder. The plurality of racks are located inside the support frame and are evenly spaced around the outside of the tube. The toothed plate meshes with the racks.

[0020] In one embodiment, the outer diameter of the wheel body is larger than the outer diameter of the tube body, and the wheel body has two annular grooves for receiving the flexible belt, the two annular grooves being spaced apart along the axial direction of the wheel body.

[0021] In one embodiment, the front end of the drive shaft and the front ends of the two guide rods are located on the same horizontal plane.

[0022] In one embodiment, the connecting rod is an L-shaped rod, and the movable end of the bidirectional cylinder and the reset pin are detachably connected to both ends of the L-shaped rod.

[0023] When using the explosion-proof valve quick reset device provided by this invention, in the initial state, the movable end of the bidirectional cylinder is in the extended state (the spring is in the compressed and energy-stored state), and the reset pin is opened through the connecting rod. At this time, the drive mechanism is in a state of constraining the movable end of the bidirectional cylinder. When it is found that the internal temperature of the dust collector (such as a bag filter) is too high, the control device controls the drive mechanism to operate, so as to release the movable end of the bidirectional cylinder. Since the movable end of the bidirectional cylinder is no longer constrained, at the same time, the previously compressed spring quickly releases its stored elastic potential energy, driving the movable end of the bidirectional cylinder to contract rapidly in the form of energy-stored impact. The movable end of the cylinder drives the reset pin to close rapidly through the connecting rod, thereby realizing the instantaneous reset of the explosion-proof valve, which greatly improves the safety of the dust collector operation.

[0024] When the internal temperature of the dust collector (such as a bag filter) is found to return to a safe range, the control device controls the movable end of the bidirectional cylinder to extend again. The movable end of the bidirectional cylinder reopens the reset pin through the connecting rod. Then, the control device controls the drive mechanism to run in reverse to constrain the movable end of the bidirectional cylinder, thereby stabilizing the extended state of the bidirectional cylinder and keeping the explosion-proof valve in the normally open state.

[0025] In summary, the explosion-proof valve quick reset device provided by the present invention can realize the instantaneous reset of the explosion-proof valve, which greatly improves the operational safety of the dust collector. Attached Figure Description

[0026] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0027] Figure 1 This is a schematic diagram of the explosion-proof valve quick reset device provided by the present invention.

[0028] Figure 2 This is a schematic diagram showing the cooperation relationship between the valve body mechanism and the energy storage mechanism;

[0029] Figure 3 This is a schematic diagram of the drive mechanism;

[0030] Figure 4 for Figure 3 A magnified view of part A;

[0031] Figure 5This is a schematic diagram of the drive shaft.

[0032] Figures 1-5 middle:

[0033] 100 Valve body mechanism, 110 Explosion-proof valve, 120 Reset pin;

[0034] 200 Energy storage mechanism, 210 housing, 220 spring;

[0035] 300 Drive mechanism, 310 Support frame, 320 Drive shaft, 321 Tube body, 322 Wheel body, 323 Rack, 324 Annular groove, 330 Guide rod, 340 Flexible belt, 350 Toothed plate, 360 Cylinder, 370 Temperature sensor;

[0036] 400 Reset mechanism, 410 Two-way cylinder, 420 Connecting rod. Detailed Implementation

[0037] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0038] The core of this invention is to provide a rapid reset device for explosion-proof valves, which can realize the instantaneous reset of explosion-proof valves and greatly improve the operational safety of dust collectors.

[0039] Please refer to Figures 1 to 5 This specific embodiment provides a rapid reset device for an explosion-proof valve, comprising:

[0040] The valve body mechanism 100 includes an explosion-proof valve 110 and two reset pins 120 symmetrically arranged on both sides of the explosion-proof valve 110.

[0041] The reset mechanism 400 includes a bidirectional cylinder 410 and a connecting rod 420 disposed on the top of the explosion-proof valve 110. The connecting rod 420 is disposed between the reset pin 120 and the movable end of the bidirectional cylinder 410.

[0042] The energy storage mechanism 200 includes a housing 210 located on top of the explosion-proof valve 110, and at least one spring 220 located between the housing 210 and the movable end of the bidirectional cylinder 410. The movable end of the bidirectional cylinder 410 is slidably located inside the housing 210. In the initial state, the movable end of the bidirectional cylinder 410 is in the extended state and the reset pin 120 is opened by the connecting rod 420.

[0043] The drive mechanism 300 is located on the top of the explosion-proof valve 110. The drive mechanism 300 is used to constrain or release the movable end of the bidirectional cylinder 410. When the movable end of the bidirectional cylinder 410 is released, the compressed spring 220 releases its stored elastic potential energy to drive the movable end of the bidirectional cylinder 410 to retract rapidly.

[0044] The control device, the two-way cylinder 410 and the drive mechanism 300 are all connected to the control device.

[0045] In practical applications, the structure, type, and position of the valve body mechanism 100, reset mechanism 400, energy storage mechanism 200, and drive mechanism 300 can be determined according to the actual situation and needs.

[0046] When using the explosion-proof valve quick reset device provided by this invention, in the initial state, the movable end of the bidirectional cylinder 410 is in the extended state (the spring 220 is in the compressed and energy-storing state), and the reset pin 120 is opened through the connecting rod 420. At this time, the drive mechanism 300 is in a state of constraining the movable end of the bidirectional cylinder 410. When it is found that the internal temperature of the dust collector (such as a bag dust collector) is too high, the control device controls the drive mechanism 300 to operate, so as to release the movable end of the bidirectional cylinder 410. Since the movable end of the bidirectional cylinder 410 is no longer constrained, at the same time, the previously compressed spring 220 quickly releases its stored elastic potential energy, and drives the movable end of the bidirectional cylinder 410 to contract rapidly in the form of energy-storing impact. The movable end of the cylinder 410 drives the reset pin 120 to close rapidly through the connecting rod 420, thereby realizing the instantaneous reset of the explosion-proof valve 110, which greatly improves the safety of the dust collector operation.

[0047] When the internal temperature of the dust collector (such as a bag filter) is found to return to a safe range, the control device controls the movable end of the bidirectional cylinder 410 to extend again. The movable end of the bidirectional cylinder 410 reopens the reset pin 120 through the connecting rod 420. Then, the control device controls the drive mechanism 300 to run in reverse to constrain the movable end of the bidirectional cylinder 410, thereby stabilizing the extended state of the bidirectional cylinder 410 and keeping the explosion-proof valve 110 in the normally open state.

[0048] In summary, the explosion-proof valve quick reset device provided by the present invention can realize the instantaneous reset of the explosion-proof valve, which greatly improves the operational safety of the dust collector.

[0049] In one embodiment, such as Figure 3 and Figure 4As shown, the drive mechanism 300 includes a support frame 310 located on top of the explosion-proof valve 110, a drive shaft 320 rotatably passing through the front side of the support frame 310, two guide rods 330 symmetrically located on the front side of the support frame 310, two flexible belts 340, two toothed plates 350 symmetrically meshing on one side of the drive shaft 320, and a cylinder 360. The cylinder 360 is located between the inner bottom surface of the support frame 310 and the bottom of the toothed plate 350. One end of the flexible belt 340 is wrapped around the outer periphery of the drive shaft 320, and the other end of the flexible belt 340 passes around the outside of the guide rods 330 and is connected to the movable end of the bidirectional cylinder 410.

[0050] In one embodiment, a temperature sensor 370 is also included, located on top of the explosion-proof valve 110, and is connected to the control device. The cylinder 360, the temperature sensor 370, and the bidirectional cylinder 410 are all electrically connected to the control device (such as an external PLC). This structural design can improve the user comfort of the device. The control device analyzes and judges the temperature data detected by the temperature sensor 370. If the temperature is too high, the control device judges the working condition as a dangerous condition. At this time, the control device can control the movable end of the cylinder 360 to retract to the limit position so that the toothed plate 350 disengages from the drive shaft 320, so that the drive shaft 320 loses its lock. Then, the spring 220 drives the movable end of the bidirectional cylinder 410 to retract rapidly in the form of energy storage impact, and finally realizes the instantaneous reset of the explosion-proof valve 110. When the temperature returns to the safe range, the external PLC controls the movable end of the bidirectional cylinder 410 to extend again, and reopens the reset pin 120 through the connecting rod 420, and then controls the cylinder 360 to extend again to stabilize the extended state of the bidirectional cylinder 410 and keep the explosion-proof valve 110 normally open.

[0051] To further illustrate the usage of the explosion-proof valve quick reset device provided by the present invention, examples will be given below.

[0052] In the initial state, the movable end of the bidirectional cylinder 410 is in the extended state, and the reset pin 120 is opened through the connecting rod 420. At this time, the movable end of the cylinder 360 is in the retracted state, and the toothed plate 350 connected to it meshes with the rack 323 on the drive shaft 320, causing the drive shaft 320 to rotate and tighten the flexible belt 340. The tightening effect of the flexible belt 340 provides stable constraint for the extended movable end of the bidirectional cylinder 410; in this state, the spring 220 is in the compressed energy storage state.

[0053] When the temperature sensor 370 detects high temperature data and the external PLC analyzes and determines it to be dangerous, the external PLC controls the movable end of the cylinder 360 to retract to its limit position. The movable end of the cylinder 360 drives the toothed plate 350 to move, causing the toothed plate 350 to disengage from the drive shaft 320. The drive shaft 320 loses its lock, and the flexible belt 340 relaxes accordingly. As a result, the movable end of the bidirectional cylinder 410 loses its radial constraint. At the same time, the previously compressed spring 220 quickly releases its stored elastic potential energy, driving the movable end of the bidirectional cylinder 410 to contract rapidly in the form of stored energy impact. The movable end of the cylinder drives the reset pin 120 to close quickly through the connecting rod 420, thereby realizing the instantaneous reset of the explosion-proof valve 110, which greatly improves the safety of the dust collector operation.

[0054] When the temperature sensor 370 detects that the temperature has returned to a safe range, the movable end of the external PLC-controlled bidirectional cylinder 410 extends again, and the reset pin 120 is reopened through the connecting rod 420. Then, the external PLC-controlled cylinder 360 extends, and the cylinder 360 pushes the toothed plate 350 to re-engage with the rack 323 of the transmission shaft 320, and rotates to tighten the flexible belt 340, so as to stabilize the extended state of the bidirectional cylinder 410 and keep the explosion-proof valve 110 normally open.

[0055] In one embodiment, such as Figure 2 As shown, the box 210 has three guide rods inside, which are distributed through the movable ends of the spring 220 and the bidirectional cylinder 410.

[0056] In one embodiment, the three guide rods are evenly spaced and arranged radially along the drive shaft 320. This arrangement of the guide rods ensures smooth extension and retraction of the movable end of the bidirectional cylinder 410 and reduces the probability of spring 220 deformation, thus guaranteeing the service life of spring 220.

[0057] In one embodiment, the support frame 310 is attached to the rear side of the cylinder of the bidirectional cylinder 410, and the support frame 310 includes a metal component. Using a metal material to make the support frame 310 can ensure the supporting effect of the support frame 310, thereby improving the overall structural stability of the device.

[0058] In one embodiment, such as Figure 5 As shown, the drive shaft 320 includes a tube body 321, a wheel body 322 located at one end of the tube body 321, and multiple racks 323 located at the other end of the tube body 321. The wheel body 322 is suspended from the top of the bidirectional cylinder 410. The multiple racks 323 are all located inside the support frame 310, and the multiple racks 323 are evenly spaced around the outside of the tube body 321. The toothed plate 350 meshes with the racks 323. This structure of the drive shaft 320 allows the drive shaft 320 to be smoothly influenced by the toothed plate 350, and also allows the drive shaft 320 to steadily tighten the two flexible belts 340.

[0059] In one embodiment, the outer diameter of the wheel body 322 is larger than the outer diameter of the tube body 321, and the wheel body 322 has two annular grooves 324 for receiving the flexible belt 340, and the two annular grooves 324 are distributed at intervals along the axial direction of the wheel body 322.

[0060] In one embodiment, the front end of the drive shaft 320 and the front ends of the two guide rods 330 are located on the same horizontal plane. That is, the two guide rods 330 are located on both sides of the drive shaft 320, and the front ends of the drive shaft 320 and the front ends of the guide rods 330 are laterally located on the same horizontal plane. This arrangement of the guide rods 330 can change the direction of the flexible belt 340, so that the drive shaft 320 can stably tighten the flexible belt 340, thereby achieving the purpose of stabilizing the movable end of the bidirectional cylinder 410.

[0061] In one embodiment, the connecting rod 420 is an L-shaped rod, and the movable end of the bidirectional cylinder 410 and the reset pin 120 are detachably connected to both ends of the L-shaped rod, respectively. During use, if either the movable end of the bidirectional cylinder 410 or the reset pin 120 is damaged, the damaged part can be replaced by disassembly, and then the new part can be used in conjunction with other undamaged parts to improve the performance and service life of the device.

[0062] In addition, it should be noted that the orientation or positional relationship indicated by "front and back", "up and down", etc. in this application is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the purpose of simplifying the description and making it easier to understand, and is not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention.

[0063] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on its differences from other embodiments. Similar or identical parts between embodiments can be referred to interchangeably. Any combination of all embodiments provided by this invention is within the scope of protection of this invention and will not be elaborated upon here.

[0064] The explosion-proof valve quick reset device provided by the present invention has been described in detail above. Specific examples have been used to illustrate the principle and implementation of the invention. The descriptions of the embodiments above are only for the purpose of helping to understand the method and core idea of ​​the present invention. It should be noted that those skilled in the art can make several improvements and modifications to the present invention without departing from the principle of the invention, and these improvements and modifications also fall within the protection scope of the claims of the present invention.

Claims

1. A rapid reset device for an explosion-proof valve, characterized in that, include: The valve body mechanism (100) includes an explosion-proof valve (110) and two reset pins (120) symmetrically arranged on both sides of the explosion-proof valve (110). The reset mechanism (400) includes a two-way cylinder (410) and a connecting rod (420) disposed on the top of the explosion-proof valve (110), wherein the connecting rod (420) is disposed between the reset pin (120) and the movable end of the two-way cylinder (410); The energy storage mechanism (200) includes a housing (210) disposed on the top of the explosion-proof valve (110) and at least one spring (220) disposed between the housing (210) and the movable end of the bidirectional cylinder (410). The movable end of the bidirectional cylinder (410) is slidably disposed in the housing (210). In the initial state, the movable end of the bidirectional cylinder (410) is in the extended state and the reset pin (120) is opened by the connecting rod (420). A drive mechanism (300) is located on top of the explosion-proof valve (110). The drive mechanism (300) is used to constrain or release the movable end of the bidirectional cylinder (410). When the movable end of the bidirectional cylinder (410) is released, the compressed spring (220) releases its stored elastic potential energy to drive the movable end of the bidirectional cylinder (410) to retract rapidly. The control device is connected to both the bidirectional cylinder (410) and the drive mechanism (300).

2. The explosion-proof valve quick reset device according to claim 1, characterized in that, The drive mechanism (300) includes a support frame (310) located on top of the explosion-proof valve (110), a drive shaft (320) rotatably passing through the front side of the support frame (310), two guide rods (330) symmetrically located on the front side of the support frame (310), two flexible belts (340), two toothed plates (350) symmetrically meshing on one side of the drive shaft (320), and a cylinder (360). The cylinder (360) is located between the inner bottom surface of the support frame (310) and the bottom of the toothed plate (350). One end of the flexible belt (340) is wrapped around the outer periphery of the drive shaft (320), and the other end of the flexible belt (340) passes around the outside of the guide rod (330) and is connected to the movable end of the bidirectional cylinder (410).

3. The explosion-proof valve quick reset device according to claim 2, characterized in that, It also includes a temperature sensor (370) located on top of the explosion-proof valve (110), and the temperature sensor (370) is connected to the control device.

4. The explosion-proof valve quick reset device according to any one of claims 1 to 3, characterized in that, The box (210) is provided with three guide rods inside, which are distributed through the movable ends of the spring (220) and the bidirectional cylinder (410).

5. The explosion-proof valve quick reset device according to claim 4, characterized in that, The three guide rods are distributed at equal intervals and are arranged radially along the drive shaft (320).

6. The explosion-proof valve quick reset device according to any one of claims 1 to 3, characterized in that, The support frame (310) is attached to the rear side of the cylinder of the bidirectional cylinder (410), and the support frame (310) comprises a metal material component.

7. The explosion-proof valve quick reset device according to any one of claims 1 to 3, characterized in that, The drive shaft (320) includes a tube (321), a wheel (322) located at one end of the tube (321), and a plurality of racks (323) located at the other end of the tube (321). The wheel (322) is suspended on the top of the bidirectional cylinder (410). The plurality of racks (323) are located inside the support frame (310), and the plurality of racks (323) are equally spaced around the outside of the tube (321). The toothed plate (350) meshes with the racks (323).

8. The explosion-proof valve quick reset device according to claim 7, characterized in that, The outer diameter of the wheel body (322) is larger than the outer diameter of the tube body (321). The wheel body (322) has two annular grooves (324) for receiving the flexible belt (340). The two annular grooves (324) are distributed at intervals along the axial direction of the wheel body (322).

9. The explosion-proof valve quick reset device according to any one of claims 1 to 3, characterized in that, The front end of the drive shaft (320) and the front ends of the two guide rods (330) are located on the same horizontal plane.

10. The explosion-proof valve quick reset device according to any one of claims 1 to 3, characterized in that, The connecting rod (420) is an L-shaped rod, and the movable end of the bidirectional cylinder (410) and the reset pin (120) are detachably connected to both ends of the L-shaped rod.

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