Electric control starting system of mining explosion-proof device

Abstract

The invention belongs to the technical field of flame-proof devices, and particularly relates to a mining flame-proof device electric control starting system which comprises an electromagnetic triggering unit, a trigger force storage mechanism, a multi-stage interlocking structure, a gas driving unit and a support. The electromagnetic trigger unit is connected with various sensors through the electric control system, the sensors include but are not limited to smoke, flame, carbon monoxide, pressure and other types of sensors, and after the sensors are connected with the various sensors, active monitoring and intelligent quick response can be achieved; the intelligent degree and the safety of the electric control starting system of the mining explosion-proof device are further improved; according to the scheme, an electromagnetic triggering unit, a trigger force storage mechanism, a multi-stage interlocking structure and an electric control starting system of a gas driving unit are combined, the response speed and reliability of the explosive-proof device can be greatly improved, and then rapid starting of the explosive-proof device and accurate spraying of fire extinguishing powder in underground environments such as coal mines and metal mines are achieved; therefore, the safety of the environment under the mine is improved.

Description

Technical Field

[0001] This invention belongs to the field of explosion-proof device technology, specifically an electrically controlled opening system for a mine explosion-proof device. Background Technology

[0002] Explosion-proof and flame-retardant devices generally utilize the principle that the air shock wave generated by an explosion travels at a speed much greater than the flame speed. When the air shock wave arrives, it triggers the device, releasing extinguishing powder to block the flame. In coal mines, these devices are installed in roadways with risks of gas and coal dust. When a gas or coal dust explosion occurs, the gas thrust generated by the explosion triggers the device to automatically activate and spray extinguishing powder, thus promptly extinguishing the flame within its protected area and preventing further spread and greater damage.

[0003] However, existing explosion-proof and flame-retardant devices lack deep integration with various types of sensors (such as smoke, flame, carbon monoxide, and pressure), resulting in an inability to achieve active monitoring and intelligent response. Furthermore, the mechanical structure and the principle of extinguishing powder spraying also suffer from slow response speeds. Therefore, there is an urgent need to design an electronically controlled opening system that combines electromagnetic drive, a multi-stage unlocking mechanism, and high-pressure pneumatic control to improve the response speed and reliability of explosion-proof devices. Summary of the Invention

[0004] To overcome the shortcomings of existing technologies, this invention proposes an electrically controlled opening system for explosion-proof devices used in mines. This invention primarily addresses the lack of deep integration between the electrical control systems of existing explosion-proof and flame-retardant devices and various types of sensors, which prevents active monitoring and intelligent response. Furthermore, the mechanical structure and the principle of extinguishing powder spraying also suffer from slow response speeds.

[0005] The technical solution adopted by this invention to solve its technical problem is as follows: This invention provides an electrically controlled opening system for a mine explosion-proof device, including an electromagnetic triggering unit, a trigger accumulator mechanism, a multi-level interlocking structure, a gas driving unit, and a support; one end of the support is connected to the gas driving unit; the gas driving unit sprays extinguishing powder with high-pressure gas by triggering; a multi-level interlocking structure for triggering the gas driving unit is provided inside the support; a trigger accumulator mechanism for triggering the multi-level interlocking structure is provided above the multi-level interlocking structure; an electromagnetic triggering unit for triggering the trigger accumulator mechanism is provided on one side of the trigger accumulator mechanism; both the trigger accumulator mechanism and the electromagnetic triggering unit are connected to the support.

[0006] The electromagnetic triggering unit is connected to various sensors via an electronic control system. These sensors include, but are not limited to, sensors for smoke, flame, carbon monoxide, and pressure. By connecting to these sensors, active monitoring and intelligent rapid response can be achieved, thereby improving the intelligence and safety of the electronic control opening system for explosion-proof devices in mines. Furthermore, the electronic control opening system in this solution, which combines an electromagnetic triggering unit, a trigger power storage mechanism, a multi-level interlocking structure, and a gas-driven unit, can greatly improve the response speed and reliability of the explosion-proof device. This enables rapid opening of explosion-proof devices and precise spraying of extinguishing powder in underground environments such as coal mines and metal mines, thereby enhancing the safety of the underground mining environment.

[0007] Preferably, the gas-driven unit includes a connecting sleeve, a guide tube, a high-pressure gas chamber, a diffuser nozzle, an inflation nozzle, a plug, a large piston, a pull rod, and a small piston; one end of the bracket is fixedly connected to one end of the connecting sleeve; the other end of the connecting sleeve is fixedly connected to one end of the guide tube; the other end of the guide tube is threaded to the open end of the high-pressure gas chamber and locked in the opposite direction by a locking nut; the other end of the high-pressure gas chamber is fixedly connected to the diffuser nozzle; the closed end of the diffuser nozzle is provided with inclined injection holes evenly spaced along the circumferential direction; the injection holes are located outside the high-pressure gas chamber; one end of the small piston is slidably connected inside the open end of the diffuser nozzle; an O-ring is provided on the cylindrical surface of the small piston; the other end of the small piston is connected to one end of the large piston through the pull rod; the large piston and the guide tube are sealed by a sealing ring; the other end of the large piston is slidably connected inside the through hole of the connecting sleeve; an inflation nozzle is provided on the upper cylindrical surface of the high-pressure gas chamber; the plug for sealing is threadedly connected inside the inflation nozzle.

[0008] When the multi-stage interlocking structure triggers the gas-driven unit, the other end of the large piston loses its obstructing force. Under the pressure of the gas in the high-pressure chamber, and because the cross-sectional area of ​​the large piston is larger than that of the small piston, the gas pressure pushes the large piston along the guide tube towards the connecting sleeve. Then, under the action of the pull rod, the large piston pulls the small piston out of the diffuser nozzle, thus connecting the diffuser nozzle with the interior of the high-pressure chamber. Under the action of the high-pressure gas in the high-pressure chamber, the extinguishing powder inside is discharged along with the high-pressure gas from the diffuser nozzle. This achieves rapid and uniform discharge of the extinguishing powder through the multi-stage interlocking structure and the use of high-pressure gas, thereby improving the response speed of the explosion-proof device. Furthermore, the use of high-pressure gas to spray the extinguishing powder into evenly spaced, inclined nozzles ensures more uniform discharge and controllable spray direction, thus improving the fire extinguishing and explosion-proof effect. After the gas-driven unit is in operation, it can be reused by first resetting the multi-stage interlocking structure, the large piston, and the small piston, and then refilling the high-pressure gas chamber with extinguishing powder and high-pressure gas through the inflation nozzle.

[0009] Preferably, the multi-stage interlocking structure includes a first flap, a second flap, and a large flap; one end of the large flap is hinged to the bracket, and the hinge point is located below the other end of the large piston; one end of the large flap abuts against the end face of the other end of the large piston; the other end of the large flap abuts against a latch at one end of the second flap; one end of the second flap is hinged to the bracket; the other end of the second flap abuts against one end of the first flap; one end of the first flap is hinged to the bracket; the other end of the first flap is controlled to abut by the trigger power storage mechanism.

[0010] When the trigger accumulator mechanism activates the multi-stage interlocking structure, the other end of the first flap is pushed downwards, causing one end of the first flap to swing upwards. This causes one end of the first flap to lose its resistance to the other end of the second flap, resulting in the second flap swinging. Consequently, one end of the second flap disengages from its resistance to the other end of the large flap, and the other end of the large flap swings downwards under the push of the large piston, disengaging from its resistance to the other end of the large piston. This triggers the gas-driven unit. This solution uses a multi-stage resistance-type linkage structure to provide power transition from the trigger accumulator mechanism to the gas-driven unit. This resistance-unlocking method effectively ensures a fast response speed, thereby improving the response speed of the explosion-proof device.

[0011] Preferably, a first safety bolt is provided below the other end of the first flap; the first safety bolt abuts against the lower surface of the other end of the first flap; the first safety bolt passes through the bracket by insertion.

[0012] The first flap is limited by the first safety bolt, thereby restricting its movement and preventing accidental triggering during installation and transportation, thus improving the safety of the explosion-proof device.

[0013] Preferably, a limiting post is provided below the first flap; the limiting post is spaced a distance from the first flap; the limiting post is fixedly connected to the bracket.

[0014] By setting a limiting post at a certain distance below the first flap, the limiting post restricts the first flap from continuing to swing downward after the multi-level interlocking structure is triggered, thereby preventing the large piston that rushes out quickly from colliding with the first flap. On the one hand, this prevents the first flap from colliding with the large piston and causing the gas drive unit to terminate, and on the other hand, it prevents the large piston from damaging the first flap.

[0015] Preferably, the trigger charging mechanism includes a mounting tube, a cap, a firing pin, a spring, a charging bolt, and a trigger; the mounting tube is positioned directly above the other end of the first flap; the lower end of the mounting tube is threaded to the bracket; the upper end of the mounting tube is fixedly connected to the cap; the charging bolt passes through the cap and is connected to the upper end of the firing pin; the upper end of the firing pin abuts against the lower end of the spring; the upper end of the spring abuts against the cap; the firing pin is slidably connected inside the mounting tube; a locking groove is provided on the firing pin; one end of the trigger is fastened into the locking groove; the trigger is hinged to the mounting tube; the other end of the trigger is controlled by the electromagnetic triggering unit.

[0016] When the electromagnetic trigger unit activates the trigger storage mechanism, the other end of the trigger swings towards the mounting tube, causing one end of the trigger to disengage from the latch slot. The firing pin, under the stored force of the upper spring, then moves rapidly downwards and strikes the other end of the first flap directly below, thus rapidly triggering the multi-stage interlocking structure. This design, by using spring storage for triggering, achieves maximum rapid triggering, thereby improving the trigger response speed of the explosion-proof device and its explosion-proof effect. Furthermore, the impact force of the firing pin is also transmitted to the multi-stage interlocking structure, accelerating its triggering speed and further improving the overall trigger response speed of the explosion-proof device, thus enhancing its explosion-proof performance.

[0017] Preferably, a second safety bolt is provided on the other end of the trigger near the mounting tube; the second safety bolt abuts against the surface of the trigger near the mounting tube; the second safety bolt passes through the bracket by insertion.

[0018] The trigger is limited by the second safety bolt, thereby restricting trigger action and preventing accidental triggering during installation and transportation, thus improving the safety of the explosion-proof device.

[0019] Preferably, the electromagnetic triggering unit includes an electromagnet, a signal line, and a fixing clip; the electromagnet is connected to an external sensor via the signal line; and the electromagnet is connected to the bracket via the fixing clip.

[0020] Electromagnets and various types of external sensors can be connected through a simple control circuit, or they can be controlled by a controller via an electrical signal. When the electromagnet receives the activation signal from an external sensor (such as a smoke, flame, carbon monoxide, or pressure sensor) through a signal line, it generates magnetic force to drive the contact to swing the other end of the trigger, thereby quickly triggering the trigger storage mechanism and ensuring the trigger response speed of the explosion-proof device.

[0021] Preferably, a guide post is radially arranged on the cylindrical surface in the middle of the large piston; a spiral groove is provided on the inner wall of the guide tube; the protruding end of the guide post slides along the spiral groove; and a stirring element is provided on the pull rod.

[0022] The guide column, which slides within a spiral groove on the inner wall of the guide tube on the large piston, rotates circumferentially as it moves along the guide tube toward the connecting sleeve when the gas drive unit is triggered. This rotation, via a pull rod, drives the stirring element to agitate the extinguishing powder in the high-pressure gas chamber. This agitates and lifts the extinguishing powder, preventing it from settling and failing to be effectively sprayed due to prolonged storage. Furthermore, the lifted extinguishing powder is then sprayed out from the diffuser nozzle by the high-pressure gas, allowing for better and more even dispersion, thus resulting in a more effective fire extinguishing coverage.

[0023] Preferably, the stirring element includes a counterweight sleeve, a bearing, stirring blades, a drive wheel, a sliding column, and an elastic element; the counterweight sleeve is rotatably connected to the pull rod via the bearing; multiple stirring blades are evenly spaced on the cylindrical surface of the counterweight sleeve; blind holes are radially arranged in the mounting holes of the counterweight sleeve; an elastic element and a sliding column are arranged in the blind holes; the sliding column abuts against the tooth gap of the drive wheel using the rebound force of the elastic element, one side of the tooth on the drive wheel is an arc surface, and the other side is a straight surface parallel to the sliding column; the drive wheel is fixedly connected to the pull rod.

[0024] Because the spiral groove has a large pitch and a short stroke, the number of stirring rotations of the stirring element is small, which affects the stirring of the extinguishing powder. To solve this problem, in this solution, when the large piston rotates under the action of the spiral groove, it drives the drive wheel to rotate via the pull rod. The straight surface of the teeth on the drive wheel pushes the extended sliding column to move, which in turn drives the counterweight sleeve to rotate. When the large piston finishes its stroke due to the spiral groove, the counterweight sleeve continues to rotate under its own inertial force. When the sliding column on the counterweight sleeve contacts the next tooth of the drive wheel, it is squeezed along the arc surface of the tooth and retracts into the blind hole on the counterweight sleeve, thus not hindering the rotation of the counterweight sleeve. This achieves the function of stopping the pull rod while the stirring blades continue to stir the extinguishing powder in the high-pressure gas chamber, thereby compensating for the problem of the small number of stirring rotations caused by the large pitch and short stroke of the spiral groove, and improving the stirring effect of the extinguishing powder.

[0025] The beneficial effects of this invention are as follows: 1. In this invention, the electromagnetic triggering unit is connected to various sensors via an electronic control system. These sensors include, but are not limited to, sensors for smoke, flame, carbon monoxide, and pressure. By connecting to these sensors, active monitoring and intelligent rapid response can be achieved, thereby improving the intelligence and safety of the electronic control opening system for explosion-proof devices in mines. Furthermore, the electronic control opening system in this solution, which combines the electromagnetic triggering unit, trigger power storage mechanism, multi-level interlocking structure, and gas-driven unit, can greatly improve the response speed and reliability of the explosion-proof device. This enables rapid opening of explosion-proof devices and precise spraying of extinguishing powder in underground environments such as coal mines and metal mines, thereby improving the safety of the underground mining environment.

[0026] 2. In this invention, when the multi-stage interlocking structure triggers the gas drive unit, the other end of the large piston loses its obstructing force. Under the pressure of the gas in the high-pressure chamber, and because the cross-sectional area of ​​the large piston is larger than that of the small piston, the gas pressure pushes the large piston along the guide tube towards the connecting sleeve. Then, under the action of the pull rod, the large piston pulls the small piston out of the diffuser nozzle, thus connecting the diffuser nozzle with the interior of the high-pressure chamber. Under the action of the high-pressure gas in the high-pressure chamber, the extinguishing powder in the high-pressure chamber is discharged along with the high-pressure gas as it is ejected from the diffuser nozzle. This achieves rapid and uniform ejection of the extinguishing powder through the multi-stage interlocking structure and the use of high-pressure gas, thereby improving the response speed of the explosion-proof device. Furthermore, the use of high-pressure gas to eject the extinguishing powder into the evenly spaced inclined injection holes ensures that the ejected extinguishing powder is more uniform and the injection direction is controllable, thus improving the fire extinguishing and explosion-proof effect. After the gas-driven unit is in operation, it can be reused by first resetting the multi-stage interlocking structure, the large piston, and the small piston, and then refilling the high-pressure gas chamber with extinguishing powder and high-pressure gas through the inflation nozzle.

[0027] 3. In this invention, when the trigger accumulator mechanism triggers the multi-stage interlocking structure, the other end of the first flap is pushed downwards, causing one end of the first flap to swing upwards. This causes one end of the first flap to lose its resistance to the other end of the second flap, resulting in the second flap swinging. Consequently, one end of the second flap disengages from its resistance to the other end of the large flap, and the other end of the large flap swings downwards under the push of the large piston, disengaging from its resistance to the other end of the large piston. This achieves the function of triggering the gas drive unit. This solution uses a multi-stage resistance-type linkage structure to provide power transition from the trigger accumulator mechanism to the gas drive unit, and this resistance unlocking method can effectively ensure the response speed, thereby improving the response speed of the explosion-proof device.

[0028] 4. In this invention, when the electromagnetic trigger unit triggers the trigger charging mechanism, the other end of the trigger swings towards the mounting tube, causing one end of the trigger to disengage from the latching groove. The firing pin, under the stored force of the upper spring, moves rapidly downwards and strikes the other end of the first flap directly below, thus achieving rapid triggering of the multi-stage interlocking structure. This solution, by using spring storage for triggering, achieves maximum rapid triggering, thereby improving the trigger response speed of the explosion-proof device and its explosion-proof effect. Furthermore, the impact force of the firing pin is also transmitted to the multi-stage interlocking structure, accelerating its triggering speed and further improving the overall trigger response speed of the explosion-proof device, thus enhancing its explosion-proof effect. Attached Figure Description

[0029] The invention will now be further described with reference to the accompanying drawings.

[0030] Figure 1 This is a schematic diagram of the overall structure of the electrically controlled opening system of the explosion-proof device of the present invention; Figure 2 This is a schematic diagram of the internal structure of the electrically controlled opening system of the explosion-proof device of the present invention; Figure 3 This is a schematic diagram of the internal structure of the electromagnetic triggering unit and the trigger power storage mechanism in this invention; Figure 4 This is a schematic diagram of the internal structure of the gas-driven unit in this invention; Figure 5 This is a schematic diagram of the transmission of the electrically controlled opening system of the explosion-proof device of the present invention; Figure 6 This is a schematic diagram of the connection of the guide post in this invention; Figure 7 This is a schematic diagram of the internal structure of the stirring element in this invention; Figure 8 This is a schematic diagram of the firing pin structure in this invention; Figure 9 This is a schematic diagram of the internal structure of the guide tube in this invention; In the diagram: Electromagnetic trigger unit 1, electromagnet 11, signal line 12, fixing clip 13, trigger power storage mechanism 2, mounting tube 21, cap 22, firing pin 23, snap-fit ​​groove 231, spring 24, power storage bolt 25, trigger 26, second safety bolt 27, multi-level interlocking structure 3, first flap 31, second flap 32, large flap 33, first safety bolt 34, limit post 35, gas drive unit 4, connecting sleeve 41, guide tube 42, spiral groove 421, high-pressure air chamber 43, diffusion nozzle 44, air inlet 45, plug 46, large piston 47, pull rod 48, small piston 49, bracket 5, stirring element 6, guide post 60, counterweight sleeve 61, bearing 62, stirring blade 63, drive wheel 64, sliding column 65, elastic element 66. Detailed Implementation

[0031] To make the technical means, creative features, objectives and effects of this invention easier to understand, the invention will be further described below in conjunction with specific embodiments.

[0032] like Figures 1 to 2 As shown, an electrically controlled opening system for a mine explosion-proof device includes an electromagnetic triggering unit 1, a trigger accumulator mechanism 2, a multi-stage interlocking structure 3, a gas drive unit 4, and a support 5. One end of the support 5 is connected to the gas drive unit 4. The gas drive unit 4 sprays extinguishing powder with high-pressure gas via a triggering mechanism. The multi-stage interlocking structure 3 for triggering the gas drive unit 4 is installed inside the support 5. The trigger accumulator mechanism 2 for triggering the multi-stage interlocking structure 3 is installed above the multi-stage interlocking structure 3. An electromagnetic triggering unit 1 for triggering the trigger accumulator mechanism 2 is installed on one side of the trigger accumulator mechanism 2. Both the trigger accumulator mechanism 2 and the electromagnetic triggering unit 1 are connected to the support 5.

[0033] The electromagnetic triggering unit 1 is connected to various sensors via an electronic control system. These sensors include, but are not limited to, sensors for smoke, flame, carbon monoxide, and pressure. By connecting to these sensors, active monitoring and intelligent rapid response can be achieved, thereby improving the intelligence and safety of the electronic control opening system for explosion-proof devices in mines. Furthermore, the electronic control opening system in this solution, which combines the electromagnetic triggering unit 1, the trigger power storage mechanism 2, the multi-level interlocking structure 3, and the gas drive unit 4, can greatly improve the response speed and reliability of the explosion-proof device. This enables rapid opening of explosion-proof devices and precise spraying of extinguishing powder in underground environments such as coal mines and metal mines, thereby improving the safety of the underground mining environment.

[0034] like Figure 2 and Figure 4As shown, the gas drive unit 4 includes a connecting sleeve 41, a guide tube 42, a high-pressure gas chamber 43, a diffuser nozzle 44, an inflation nozzle 45, a plug 46, a large piston 47, a pull rod 48, and a small piston 49; one end of the bracket 5 is fixedly connected to one end of the connecting sleeve 41; the other end of the connecting sleeve 41 is fixedly connected to one end of the guide tube 42; the other end of the guide tube 42 is threaded to the open end of the high-pressure gas chamber 43 and is locked in the opposite direction by a lock nut; the other end of the high-pressure gas chamber 43 is fixedly connected to the diffuser nozzle 44; the closed end of the diffuser nozzle 44 is uniformly arranged along the circumferential direction. The high-pressure air chamber 43 has spaced inclined injection holes; the injection holes are located outside the high-pressure air chamber 43; one end of the small piston 49 is slidably connected to the open end of the diffuser nozzle 44; an O-ring is provided on the cylindrical surface of the small piston 49; the other end of the small piston 49 is connected to one end of the large piston 47 via a pull rod 48; the large piston 47 is sealed to the guide tube 42 by a sealing ring; the other end of the large piston 47 is slidably connected to the through hole of the connecting sleeve 41; an air inlet 45 is provided on the upper cylindrical surface of the high-pressure air chamber 43; a plug 46 for sealing is threadedly connected to the air inlet 45.

[0035] When the multi-stage interlocking structure 3 triggers the gas drive unit 4, the other end of the large piston 47 loses its obstructing force. Under the action of the gas pressure in the high-pressure gas chamber 43, and because the cross-sectional area of ​​the large piston 47 is larger than that of the small piston 49, the gas pressure pushes the large piston 47 along the guide tube 42 toward the connecting sleeve 41. Then, under the action of the pull rod 48, the large piston 47 pulls the small piston 49 out of the diffuser nozzle 44, thereby connecting the diffuser nozzle 44 with the interior of the high-pressure gas chamber 43. Under the action of the high-pressure gas in the high-pressure gas chamber 43, the extinguishing powder in the high-pressure gas chamber 43 is discharged along with the high-pressure gas as it is sprayed out from the diffuser nozzle 44. This achieves the rapid and uniform spraying of the extinguishing powder by triggering the multi-stage interlocking structure 3 and using high-pressure gas, thereby improving the response speed of the explosion-proof device. Moreover, by using high-pressure gas to spray the extinguishing powder into the evenly spaced inclined spray holes, the sprayed extinguishing powder is made more uniform and the spray direction is controllable, thereby improving the fire extinguishing and explosion-proof effect. After the gas-driven unit 4 is working, it can be reused by first resetting the multi-stage interlocking structure 3, the large piston 47 and the small piston 49, and then refilling the high-pressure gas chamber 43 with extinguishing powder and high-pressure gas from the inflation nozzle 45.

[0036] like Figures 2 to 3As shown, the multi-stage interlocking structure 3 includes a first flap 31, a second flap 32, and a large flap 33; one end of the large flap 33 is hinged to the bracket 5, and the hinge point is located below the other end of the large piston 47; one end of the large flap 33 abuts against the end face of the other end of the large piston 47; the other end of the large flap 33 abuts against the latch at one end of the second flap 32; one end of the second flap 32 is hinged to the bracket 5; the other end of the second flap 32 abuts against one end of the first flap 31; one end of the first flap 31 is hinged to the bracket 5; the other end of the first flap 31 is controlled by the trigger power storage mechanism 2.

[0037] When the trigger accumulator 2 triggers the multi-stage interlocking structure 3, the other end of the first flap 31 is pushed downward, causing one end of the first flap 31 to swing upward. This causes one end of the first flap 31 to lose its resistance to the other end of the second flap 32, resulting in the second flap 32 swinging. Consequently, one end of the second flap 32 disengages from its resistance to the other end of the large flap 33, and the other end of the large flap 33 swings downward under the push of the large piston 47, causing one end of the large flap 33 to disengage from its resistance to the other end of the large piston 47. This achieves the function of triggering the gas drive unit 4. This solution uses a multi-stage resistance-type linkage structure to provide power transition from the trigger accumulator 2 to the gas drive unit 4. Moreover, this resistance unlocking method can effectively ensure the response speed, thereby improving the response speed of the explosion-proof device.

[0038] like Figure 3 and Figure 5 As shown, a first safety bolt 34 is provided below the other end of the first flap 31; the first safety bolt 34 abuts against the lower surface of the other end of the first flap 31; the first safety bolt 34 passes through the bracket 5 by insertion.

[0039] The first flap 31 is limited by the first safety bolt 34, thereby restricting the movement of the first flap 31, preventing accidental triggering during installation and transportation, and thus improving the safety of the explosion-proof device.

[0040] like Figure 3 As shown, a limiting post 35 is provided below the first flap 31; the limiting post 35 is spaced apart from the first flap 31; the limiting post 35 is fixedly connected to the bracket 5.

[0041] By setting a limiting post 35 at a distance below the first flap 31, the limiting post 35 restricts the first flap 31 from continuing to swing downward after the multi-level interlocking structure 3 is triggered, thereby preventing the large piston 47 that rushes out quickly from colliding with the first flap 31. On the one hand, it prevents the first flap 31 from colliding with the large piston 47 and causing the triggering of the gas drive unit 4 to terminate, and on the other hand, it prevents the large piston 47 from damaging the first flap 31.

[0042] like Figure 3 , Figure 5 and Figure 8 As shown, the trigger charging mechanism 2 includes a mounting tube 21, a cap 22, a firing pin 23, a spring 24, a charging bolt 25, and a trigger 26. The mounting tube 21 is located directly above the other end of the first flap 31. The lower end of the mounting tube 21 is connected to the bracket 5 via a thread. The upper end of the mounting tube 21 is fixedly connected to the cap 22. The charging bolt 25 passes through the cap 22 and is connected to the upper end of the firing pin 23. The upper end of the firing pin 23 abuts against the lower end of the spring 24. The upper end of the spring 24 abuts against the cap 22. The firing pin 23 is slidably connected inside the mounting tube 21. A latching groove 231 is provided on the firing pin 23. One end of the trigger 26 is fastened inside the latching groove 231. The trigger 26 is hinged to the mounting tube 21. The other end of the trigger 26 is controlled by the electromagnetic triggering unit 1.

[0043] When the electromagnetic triggering unit 1 triggers the trigger charging mechanism 2, the other end of the trigger 26 swings towards the mounting tube 21, causing one end of the trigger 26 to disengage from the latching slot 231. The firing pin 23, under the force of the upper spring 24, moves rapidly downwards and strikes the other end of the first flap 31 directly below, thus rapidly triggering the multi-stage interlocking structure 3. This solution, by using the spring 24 to charge the trigger, achieves maximum rapid triggering, thereby improving the trigger response speed of the explosion-proof device and its explosion-proof effect. Furthermore, the impact force of the firing pin 23 is also transmitted to the multi-stage interlocking structure 3, accelerating its triggering speed and further improving the overall trigger response speed of the explosion-proof device, thus enhancing its explosion-proof effect.

[0044] like Figure 3 and Figure 5 As shown, a second safety bolt 27 is provided on the other end of the trigger 26 near the mounting tube 21; the second safety bolt 27 abuts against the surface of the trigger 26 near the mounting tube 21; the second safety bolt 27 passes through the bracket 5 by insertion.

[0045] The trigger 26 is limited by the second safety bolt 27, thereby restricting the action of the trigger 26, preventing accidental triggering during installation and transportation, and thus improving the safety of the explosion-proof device.

[0046] like Figure 3 As shown, the electromagnetic triggering unit 1 includes an electromagnet 11, a signal line 12, and a fixing clip 13; the electromagnet 11 is connected to an external sensor through the signal line 12; the electromagnet 11 is connected to the bracket 5 through the fixing clip 13.

[0047] Electromagnet 11 and various external sensors can be connected through a simple control circuit, or they can be controlled by a controller via an electrical signal. When electromagnet 11 receives an activation signal from an external sensor (such as a smoke, flame, carbon monoxide, or pressure sensor) via signal line 12, it generates a magnetic force to drive the contact to swing the other end of trigger 26, thereby quickly triggering the trigger power storage mechanism 2 and ensuring the trigger response speed of the explosion-proof device.

[0048] like Figure 4 , Figure 6 and Figure 9 As shown, a guide post 60 is radially arranged on the cylindrical surface of the middle part of the large piston 47; a spiral groove 421 is provided on the inner wall of the guide tube 42; the protruding end of the guide post 60 slides along the spiral groove 421; and a stirring element 6 is provided on the pull rod 48.

[0049] The guide post 60, which slides within the spiral groove 421 on the inner wall of the guide tube 42 on the large piston 47, causes the large piston 47 to rotate circumferentially while moving along the guide tube 42 toward the connecting sleeve 41 when the gas drive unit 4 is triggered. This, in turn, drives the stirring element 6 via the pull rod 48 to stir the extinguishing powder in the high-pressure gas chamber 43. On the one hand, this stirs and lifts the extinguishing powder, preventing it from settling and failing to be sprayed effectively due to prolonged storage. On the other hand, the lifted extinguishing powder is then sprayed out from the diffuser nozzle 44 by the high-pressure gas, allowing it to be more evenly dispersed and thus providing a better fire extinguishing coverage effect.

[0050] like Figure 5 and Figure 7As shown, the stirring element 6 includes a counterweight sleeve 61, a bearing 62, stirring blades 63, a drive wheel 64, a sliding column 65, and an elastic element 66. The counterweight sleeve 61 is rotatably connected to the pull rod 48 via the bearing 62. Multiple stirring blades 63 are evenly spaced on the cylindrical surface of the counterweight sleeve 61. Blind holes are radially arranged in the mounting holes of the counterweight sleeve 61. The elastic element 66 and the sliding column 65 are arranged in the blind holes. The sliding column 65 abuts against the tooth gap of the drive wheel 64 using the rebound force of the elastic element 66. One side of the tooth on the drive wheel 64 is an arc surface, and the other side is a straight surface parallel to the sliding column 65. The drive wheel 64 is fixedly connected to the pull rod 48.

[0051] Because the pitch of the spiral groove 421 is large and the stroke is small, the number of stirring rotations of the stirring element 6 is small, which affects the stirring of the extinguishing powder. To solve this problem, in this solution, when the large piston 47 rotates under the action of the spiral groove 421, it drives the drive wheel 64 to rotate through the pull rod 48. The straight surface of the teeth on the drive wheel 64 pushes the extended sliding column 65 to move, thereby pushing the counterweight sleeve 61 to rotate. When the stroke of the large piston 47 due to the spiral groove 421 ends, the counterweight sleeve 61 returns to its original position due to its own inertia. Under the action of the force, it continues to rotate, and when the sliding column 65 on the counterweight sleeve 61 contacts the next tooth of the drive wheel 64, it is squeezed along the arc surface of the tooth and then retracts into the blind hole on the counterweight sleeve 61, so that it will not hinder the rotation of the counterweight sleeve 61. Thus, the function of stopping the rotation of the pull rod 48 and continuing to stir the fire extinguishing powder in the high-pressure air chamber 43 is realized. This makes up for the problem of fewer stirring turns caused by the large pitch and small stroke of the spiral groove 421, and thus improves the stirring effect of the fire extinguishing powder.

[0052] The embodiments of the present invention have been described above with reference to the accompanying drawings. However, the present invention is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many other forms under the guidance of the present invention without departing from the spirit and scope of the claims. All of these forms are within the protection scope of the present invention.

Claims

1. A mine explosion-proof device electrically controlled opening system, characterized in that: The device includes an electromagnetic triggering unit (1), a trigger accumulator (2), a multi-level interlocking structure (3), a gas drive unit (4), and a bracket (5). One end of the bracket (5) is connected to the gas drive unit (4). The gas drive unit (4) sprays extinguishing powder with high-pressure gas by triggering. The bracket (5) is equipped with a multi-level interlocking structure (3) for triggering the gas drive unit (4). The trigger accumulator (2) for triggering the multi-level interlocking structure (3) is provided above the multi-level interlocking structure (3). An electromagnetic triggering unit (1) for triggering the trigger accumulator (2) is provided on one side of the trigger accumulator (2). The trigger accumulator (2) and the electromagnetic triggering unit (1) are both connected to the bracket (5).

2. The electrically controlled opening system for a mine explosion-proof device according to claim 1, characterized in that: The gas drive unit (4) includes a connecting sleeve (41), a guide tube (42), a high-pressure gas chamber (43), a diffuser nozzle (44), an air inlet (45), a plug (46), a large piston (47), a pull rod (48), and a small piston (49); one end of the bracket (5) is fixedly connected to one end of the connecting sleeve (41); the other end of the connecting sleeve (41) is fixedly connected to one end of the guide tube (42); the other end of the guide tube (42) is threadedly connected to the open end of the high-pressure gas chamber (43) and locked in the opposite direction by a locking nut; the other end of the high-pressure gas chamber (43) is fixedly connected to the diffuser nozzle (44); the closed end of the diffuser nozzle (44) is arranged along the circumference. The high-pressure air chamber (43) is provided with uniformly spaced inclined injection holes. The injection holes are located outside the high-pressure air chamber (43). The small piston (49) is slidably connected to one end of the small piston (49) at the open end of the diffuser nozzle (44). An O-ring is provided on the cylindrical surface of the small piston (49). The other end of the small piston (49) is connected to one end of the large piston (47) through a pull rod (48). The large piston (47) is sealed to the guide tube (42) by a sealing ring. The other end of the large piston (47) is slidably connected to the through hole of the connecting sleeve (41). An air inlet (45) is provided on the upper cylindrical surface of the high-pressure air chamber (43). The plug (46) for sealing is connected to the air inlet (45) by a thread.

3. The electrically controlled opening system for a mine explosion-proof device according to claim 2, characterized in that: The multi-level interlocking structure (3) includes a first flap (31), a second flap (32), and a large flap (33); one end of the large flap (33) is hinged to the bracket (5), and the hinge point is located below the other end of the large piston (47); one end of the large flap (33) abuts against the end face of the other end of the large piston (47); the other end of the large flap (33) abuts against the buckle at one end of the second flap (32); one end of the second flap (32) is hinged to the bracket (5); the other end of the second flap (32) abuts against one end of the first flap (31); one end of the first flap (31) is hinged to the bracket (5); the other end of the first flap (31) is controlled by the trigger power storage mechanism (2).

4. The electrically controlled opening system for a mine explosion-proof device according to claim 3, characterized in that: A first safety bolt (34) is provided below the other end of the first flap (31); the first safety bolt (34) abuts against the lower surface of the other end of the first flap (31); the first safety bolt (34) passes through the bracket (5) by insertion.

5. The electrically controlled opening system for a mine explosion-proof device according to claim 3, characterized in that: A limiting post (35) is provided below the first flap (31); the limiting post (35) is spaced apart from the first flap (31); the limiting post (35) is fixedly connected to the bracket (5).

6. The electrically controlled opening system for a mine explosion-proof device according to claim 3, characterized in that: The trigger charging mechanism (2) includes a mounting tube (21), a cap (22), a firing pin (23), a spring (24), a charging bolt (25), and a trigger (26); the mounting tube (21) is located directly above the other end of the first flap (31); the lower end of the mounting tube (21) is connected to the bracket (5) by a thread; the upper end of the mounting tube (21) is fixedly connected to the cap (22); the charging bolt (25) passes through the cap (22) and connects to the firing pin (23). The upper end of the striker (23) abuts against the lower end of the spring (24); the upper end of the spring (24) abuts against the cap (22); the striker (23) is slidably connected in the mounting tube (21); a snap-fit ​​groove (231) is provided on the striker (23); one end of the trigger (26) is fastened in the snap-fit ​​groove (231); the trigger (26) is hinged to the mounting tube (21); the other end of the trigger (26) is controlled by the electromagnetic triggering unit (1).

7. The electrically controlled opening system for a mine explosion-proof device according to claim 6, characterized in that: A second safety bolt (27) is provided on the other end of the trigger (26) near the mounting tube (21); the second safety bolt (27) abuts against the surface of the trigger (26) near the mounting tube (21); the second safety bolt (27) passes through the bracket (5) by insertion.

8. The electrically controlled opening system for a mine explosion-proof device according to claim 6, characterized in that: The electromagnetic triggering unit (1) includes an electromagnet (11), a signal line (12), and a fixing clip (13); the electromagnet (11) is connected to an external sensor through the signal line (12); the electromagnet (11) is connected to the bracket (5) through the fixing clip (13).

9. The electrically controlled opening system for a mine explosion-proof device according to claim 2, characterized in that: A guide post (60) is radially arranged on the cylindrical surface in the middle of the large piston (47); a spiral groove (421) is arranged on the inner wall of the guide tube (42); the protruding end of the guide post (60) slides along the spiral groove (421); and a stirring element (6) is arranged on the pull rod (48).

10. The electrically controlled opening system for a mine explosion-proof device according to claim 9, characterized in that: The stirring element (6) includes a counterweight sleeve (61), a bearing (62), stirring blades (63), a drive wheel (64), a sliding column (65), and an elastic element (66); the counterweight sleeve (61) is rotatably connected to the pull rod (48) through the bearing (62); a plurality of stirring blades (63) are evenly spaced on the cylindrical surface of the counterweight sleeve (61); blind holes are radially arranged in the mounting hole of the counterweight sleeve (61); the elastic element (66) and the sliding column (65) are arranged in the blind holes; the sliding column (65) abuts against the tooth gap of the drive wheel (64) by the rebound force of the elastic element (66); one side of the tooth on the drive wheel (64) is an arc surface, and the other side is a straight surface parallel to the sliding column (65); the drive wheel (64) is fixedly connected to the pull rod (48).

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