Mining underground automatic explosion suppression device capable of being started in two directions

Abstract

The utility model discloses a bidirectional starting mining underground automatic explosive-proof device which comprises an explosive-proof trigger device, a forward guide rod, a reverse guide rod, a main shock wave receiving disc, an auxiliary shock wave receiving disc and a guide rod support, and the two ends of the explosive-proof trigger device are connected with the forward guide rod and the reverse guide rod; the explosion-proof triggering device comprises a fire extinguishing medium storage bin, a touch bin and a touch mechanism, the touch bin is installed on the left side of the fire extinguishing medium storage bin, the touch mechanism is coaxially installed on the touch bin, the reverse pushing mechanism comprises a reverse pushing rod, a connecting flange, a reverse triggering plug and a guiding cylinder, and the reverse pushing rod is located in the fire extinguishing medium storage bin and the touch bin; the left ends of the reverse push rods are connected with the touch mechanism, and the right sides of the reverse push rods are fixed through connecting flanges. According to the utility model, the problems that the longitudinal force of the reverse push rods on the two sides is not concentrated enough and the automatic explosion-proof device is easy to bend in the transmission process due to overlarge moment arm distance of the reverse push rods when the automatic explosion-proof device in the prior art is started bidirectionally are solved.

Description

Technical Field

[0001] The utility model belongs to the field of mine explosion-proof equipment, in particular to a two-way started underground automatic explosion-proof device for mines. Background Art

[0002] Mine explosion-proof equipment refers to equipment that can prevent and control the entry, ignition and spread of flammable gases or dust that may cause explosions in the mine environment.

[0003] The utility model patent with the publication number CN218265999U discloses a two-way triggered automatic explosion-proof device for coal mines. When a gas and coal dust explosion occurs in the tunnel in front of the explosion-proof device, the shock wave receiver on the second push rod converts the received impact force into thrust, and transmits the thrust to the loading hoop through the second push rod and the longitudinal transmission rod. The loading hoop drives the sliding sleeve to move axially backward on the outer circumference of the jet pipe, unlocks the limit ball and the piston, and releases high-pressure gas to trigger the main unit of the explosion-proof device. When a gas and coal dust explosion occurs in the tunnel behind the explosion-proof device, the impact force transmits the thrust to the loading hoop through the first push rod and the cross-shaped connector, and the loading hoop drives the sliding sleeve to move axially forward on the outer circumference of the jet pipe, unlocks the limit ball and the piston, and releases high-pressure gas to trigger the main unit of the explosion-proof device, thereby realizing the two-way triggering of the explosion-proof device. However, the two longitudinal transmission rods are located outside the explosion-proof main unit, resulting in a large force arm distance, which makes the transmission force of the transmission rods on both sides insufficiently concentrated, and is prone to bending during the transmission process. Utility Model Content

[0004] The utility model aims to provide a two-way activated underground automatic explosion-proof device for mining, so as to solve the problems in the prior art that when the automatic explosion-proof device is started in both directions, the distance between the force arms of the reverse push rods is too large, so that the longitudinal forces of the reverse push rods on both sides are not concentrated enough, and bending is easy to occur during the transmission process.

[0005] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0006] A two-way activated underground automatic explosion-proof device for mining, comprising an explosion-proof trigger device, a forward guide rod, a reverse guide rod, a main shock wave receiving disk, a secondary shock wave receiving disk, and a guide rod bracket, wherein the two ends of the explosion-proof trigger device are respectively connected to the forward guide rod and the reverse guide rod, the ends of the forward guide rod and the reverse guide rod are respectively equipped with the main shock wave receiving disk, and the secondary shock wave receiving disk is installed near the middle position, the forward guide rod and the reverse guide rod are connected to the inner wall of the tunnel through the guide rod bracket, and the forward guide rod and the reverse guide rod are slidably connected along the end of the guide rod bracket; the explosion-proof trigger device comprises a fire extinguishing medium storage bin, a trigger bin, and a trigger mechanism, the fire extinguishing medium storage bin is horn-shaped, and a fire extinguishing medium is placed inside, and a bolt on the left side of the fire extinguishing medium storage bin is installed A trigger bin is provided, which has a cylindrical structure and a closed left end. A trigger mechanism is coaxially installed on the trigger bin. The explosion-proof trigger device also includes a reverse push mechanism, which includes a reverse push rod, a connecting flange, a reverse trigger plug, and a guide cylinder. The reverse push rods are located inside the fire extinguishing medium storage bin and the trigger bin, and there are at least two of them, which are evenly distributed around the circumference of the trigger mechanism. The left end of the reverse push rod is connected to the trigger mechanism, and the right end is located on the right side of the fire extinguishing medium storage bin and is fixed by a connecting flange. A reverse trigger plug is fixed at the center of the connecting flange. The reverse trigger plug is coaxial with the reverse guide rod. The left end of the guide cylinder is fixed to the trigger bin, and the right end is fixed to a cross support frame. The reverse push rod is slidably connected along the inside of the guide cylinder.

[0007] Preferably, the fire extinguishing medium storage bin comprises a hanging rack, a pressure ring, a cross support frame, and a sealing film. A hanging rack is fixed on the top of the fire extinguishing medium storage bin for fixing it to the tunnel. A pressure ring is bolted to the opening of the fire extinguishing medium storage bin. A cross support frame is integrally formed in the pressure ring. A sealing film is clamped between the pressure ring and the opening of the fire extinguishing medium storage bin.

[0008] Preferably, the trigger chamber includes a pressure cover, an inflation cover, a pressure gauge, and an inflation connector. The pressure cover and the inflation cover are respectively bolted to the upper and lower positions of the trigger chamber. The pressure cover is equipped with a pressure gauge, and the inflation cover is equipped with an inflation connector.

[0009] Preferably, the trigger mechanism includes a center sleeve, a starting sleeve, an inner core shaft, and an air tank. The center sleeve is fixed at the axis of the trigger bin, the starting sleeve is sleeved on the outside of the center sleeve, the inner core shaft is arranged inside the center sleeve, the left end of the air tank is connected to the right end of the center sleeve, the right end is fixed to the center of the cross support frame, and the inside of the air tank is connected to the pressure gauge and the inflation joint pipe; the center sleeve includes a fixed cylinder, threads, vents, ball holes, balls, and a connecting cap. The outer wall of the fixed cylinder is provided with threads, the fixed cylinder is coaxially connected to the trigger bin through threads, the right side of the fixed cylinder is threadedly connected to the air tank, a plurality of vents are opened on the right side of the fixed cylinder, the vents are communicated with the trigger bin, a plurality of ball holes are opened radially on the circumference of the left side of the fixed cylinder, the ball holes are located on the outside of the left side of the trigger bin, balls are placed in the ball holes, and the left end of the fixed cylinder is threaded The cam is connected with a connecting cap; the starting sleeve comprises a sliding cylinder, a forward trigger cap, a ball pressure ring, a first chamber, a second chamber, a fixing ring, and a reverse trigger plate, the sliding cylinder is slidably connected along the outer wall of the fixed cylinder, the left end of the sliding cylinder is threadedly connected with a forward trigger cap, the forward trigger cap is coaxial with the forward guide rod, the inner wall of the sliding cylinder is integrally formed with a ball pressure ring, the inner walls of the sliding cylinder on the left and right of the ball pressure ring are divided into the first chamber and the second chamber, the right end of the sliding cylinder is integrally formed with a fixing ring, the reverse trigger plate is bolted to the fixing ring, and the reverse trigger plate is also bolted to the reverse push rod; the inner core shaft comprises a sliding shaft, a limiting groove, and a piston sleeve, the sliding shaft is located on the inner wall of the fixed cylinder and can be slidably connected along the coaxial center of the fixed cylinder, the left end of the sliding shaft is provided with an annular limiting groove, the right part of the sliding shaft is sleeved with a piston sleeve, and the piston sleeve is sealed with the inner wall of the fixed cylinder.

[0010] Preferably, the spacing between the reverse push rods at relative positions ranges from 100 to 200 mm.

[0011] Preferably, a forward trigger connecting tube is fixed outside the forward trigger cap, a reverse trigger connecting tube is fixed outside the reverse trigger plug, the forward guide rod is slidably connected inside the forward trigger connecting tube, and the reverse guide rod is slidably connected inside the reverse trigger connecting tube.

[0012] Preferably, a safety hoop is provided between the sliding cylinder and the outer wall of the trigger bin.

[0013] Preferably, the safety hoop is a circular ring composed of two semicircular structures, which are connected by magnetic attraction.

[0014] Preferably, a semi-cylindrical rear condom is clamped and placed on the reverse push rod between the guide cylinder and the connecting flange.

[0015] The utility model has the following beneficial effects:

[0016] 1. In addition to the forward trigger explosion-proof function, the automatic explosion-proof device can also achieve reverse explosion-proof function through the reverse push mechanism. The reverse push rod is set in the fire extinguishing medium storage bin and the trigger bin. The distance between the reverse push rods is small, and the force arm is also small through the connection flange. When the explosion impacts, the force arm deformation and force decomposition loss are reduced, and the bending deformation caused by the large distance between the reverse push rods is avoided. In addition, the guide cylinder can also assist the reverse push rod to slide inside to achieve its transmission guide function, protect the reverse push rod from being bent in a large range, and avoid the reverse push rod from contacting with the fire extinguishing medium to affect its mobility;

[0017] 2. The installation of the forward trigger connecting tube and the reverse trigger connecting tube makes the forward guide rod and the reverse guide rod have guiding properties, so that they can contact the center of the forward trigger cap and the reverse trigger plug more accurately when subjected to explosive thrust.

[0018] 3. The safety hoop and the rear safety sleeve limit the bidirectional movement of the starting sleeve, so that the explosion-proof trigger device can play a safety role when it is not installed. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is the front view of the utility model;

[0020] Figure 2 This is a schematic diagram of the appearance structure of the explosion-proof trigger device of the utility model;

[0021] Figure 3 This is a cross-sectional view of the explosion-proof trigger device of the utility model;

[0022] Figure 4 This is a schematic diagram of the appearance structure of the central sleeve of the utility model;

[0023] Figure 5 This is a schematic diagram of the appearance structure of the starting sleeve of the utility model;

[0024] Figure 6 It is a cross-sectional view of the starting sleeve of the utility model;

[0025] Figure 7 This is a schematic diagram of the appearance structure of the inner core shaft of the utility model;

[0026] Figure 8 This is a cross-sectional view of the reverse push mechanism of the utility model;

[0027] Fig. 9 This is a cross-sectional view of the connection between the reverse push rod, the center sleeve, the starting sleeve and the inner core shaft of the utility model;

[0028] Icons: 1. Explosion-proof trigger device; 11. Fire extinguishing medium storage bin; 111. Hanging rack; 112. Pressure ring; 113. Cross support frame; 114. Sealing membrane; 12. Trigger bin; 121. Pressure hood; 122. Inflatable hood; 1211. Pressure gauge; 1221. Inflatable joint; 13. Trigger mechanism; 131. Center sleeve; 1311. Fixed sleeve; 1312. Thread; 1313. Vent hole; 1314. Ball hole; 1315. Ball; 1316. Connecting cap; 132. Start sleeve; 1321. Sliding sleeve; 1322. Forward trigger cap; 1323. Ball Compression ring; 1324, first chamber; 1325, second chamber; 1326, fixing ring; 1327, reverse trigger plate; 133, inner core shaft; 1331, sliding shaft; 1332, limiting groove; 1333, piston sleeve; 134, gas tank; 2, forward guide rod; 21, forward trigger connecting pipe; 3, reverse guide rod; 31, reverse trigger connecting pipe; 4, main shock wave receiving plate; 5, auxiliary shock wave receiving plate; 6, guide rod bracket; 7, reverse push mechanism; 71, reverse push rod; 72, connecting flange; 73, reverse trigger plug; 74, guide cylinder; 8, safety hoop; 9, rear safety condom. DETAILED DESCRIPTION

[0029] The following is a further detailed description of the implementation of the present invention in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but cannot be used to limit the scope of the present invention.

[0030] like Figure 1-9 As shown, in this embodiment, a two-way activated underground automatic explosion-proof device for mining includes an explosion-proof trigger device 1, a forward guide rod 2, a reverse guide rod 3, a main shock wave receiving disk 4, a secondary shock wave receiving disk 5, and a guide rod bracket 6. The two ends of the explosion-proof trigger device 1 are respectively connected to the forward guide rod 2 and the reverse guide rod 3. The ends of the forward guide rod 2 and the reverse guide rod 3 are respectively installed with the main shock wave receiving disk 4, and the secondary shock wave receiving disk 5 is installed near the middle position. The main shock wave receiving disk 4, the secondary shock wave receiving disk 5, and the openings are all facing outward, which are used to receive explosion shocks in two directions, so that the forward guide rod 2 or the reverse guide rod 3 moves. The forward guide rod 2 and the reverse guide rod 3 are connected to the inner wall of the tunnel through the guide rod bracket 6, and the upper and lower heights can be manually adjusted. The forward guide rod 2 and the reverse guide rod 3 are slidably connected along the ends of the guide rod bracket 6, so that the forward guide rod 2 and the reverse guide rod 3 can be hoisted in the tunnel, and the forward guide rod 2 and the reverse guide rod 3 can also maintain horizontal movement when moving;

[0031] The explosion-proof trigger device 1 includes a fire extinguishing medium storage bin 11, a trigger bin 12, and a trigger mechanism 13. The fire extinguishing medium storage bin 11 is trumpet-shaped, which is convenient for eruption in a wider range. The fire extinguishing medium is placed inside, which can be a fire extinguishing material such as dry powder. The trigger bin 12 is bolted on the left side of the fire extinguishing medium storage bin 11. The trigger bin 12 is a cylindrical structure with a closed left end. The trigger bin 12 is coaxially mounted with a trigger mechanism 13.

[0032] The explosion-proof trigger device 1 also includes a reverse push mechanism 7, which includes a reverse push rod 71, a connecting flange 72, a reverse trigger plug 73, and a guide cylinder 74. The reverse push rods 71 ​​are located inside the fire extinguishing medium storage bin 11 and the trigger bin 12, and there are at least two of them, which are evenly distributed around the circumference of the trigger mechanism 13, so that the spacing between the reverse push rods 71 ​​is small, and the force arm is also small through the connection flange 72. When the explosion impacts, the deformation of the force arm and the loss of force decomposition are reduced, and the bending deformation caused by the excessive spacing between the reverse push rods 71 ​​is avoided. The left end of the reverse push rod 71 is connected to the trigger mechanism 13. The right end is located on the right side of the fire extinguishing medium storage bin 11 and is fixed by a connecting flange 72. A reverse trigger plug 73 is fixed at the center of the connecting flange 72. The reverse trigger plug 73 is coaxial with the reverse guide rod 3 to ensure that the reverse guide rod 3 can accurately touch the reverse trigger plug 73. The left end of the guide cylinder 74 is fixed to the trigger bin 12, and the right end is fixed to the cross support frame 113. The reverse push rod 71 is slidably connected along the guide cylinder 74 to guide the reverse push rod 71, thereby protecting the reverse push rod 71 from being bent over a large area and avoiding contact between the reverse push rod 71 and the fire extinguishing medium to cause obstruction.

[0033] Furthermore, the fire extinguishing medium storage bin 11 includes a hanging bracket 111, a pressure ring 112, a cross support bracket 113, and a sealing film 114. The hanging bracket 111 is fixed on the top of the fire extinguishing medium storage bin 11 for fixing it to the tunnel. A pressure ring 112 is bolted to the opening of the fire extinguishing medium storage bin 11. A cross support bracket 113 is integrally formed in the pressure ring 112. A sealing film 114 is clamped between the pressure ring 112 and the opening of the fire extinguishing medium storage bin 11, so that the internal fire extinguishing medium is stored in the fire extinguishing medium storage bin 11, and the sealing film 114 is easy to rupture after the fire extinguishing medium erupts.

[0034] Furthermore, the trigger chamber 12 includes a pressure cover 121, an inflation cover 122, a pressure gauge 1211, and an inflation connector 1221. The pressure cover 121 and the inflation cover 122 are respectively bolted to the upper and lower positions of the trigger chamber 12. The pressure cover 121 is installed with a pressure gauge 1211, and the inflation connector 1221 is installed in the inflation cover 122. The pressure cover 121 and the inflation cover 122 play a protective role for the pressure gauge 1211 and the inflation connector 1221.

[0035] Further, the trigger mechanism 13 includes a central sleeve 131, a starting sleeve 132, an inner core shaft 133, and an air tank 134. The central sleeve 131 is fixed at the axis of the trigger bin 12. The starting sleeve 132 is sleeved on the outside of the central sleeve 131. The inner core shaft 133 is arranged inside the central sleeve 131. The left end of the air tank 134 is connected to the right end of the central sleeve 131, and the right end is fixed to the center of the cross support frame 113. The inside of the air tank 134 is connected to the pressure gauge 1211 and the inflation joint 1221. The internal pressure value is detected by the pressure gauge 1211, and inflation can also be performed through the inflation joint 1221.

[0036] The central sleeve 131 includes a fixed cylinder 1311, a thread 1312, a vent hole 1313, a ball hole 1314, a ball 1315, and a connecting cap 1316. The outer wall of the fixed cylinder 1311 is provided with a thread 1312. The fixed cylinder 1311 is coaxially connected to the trigger chamber 12 through the thread 1312. The right side of the fixed cylinder 1311 is threadedly connected to the gas tank 134. The right part of the fixed cylinder 1311 is provided with a plurality of vent holes 1 313, the vent hole 1313 is communicated with the trigger bin 12, so that the gas in the gas tank 134 is ejected and enters the trigger bin 12 and the fire extinguishing medium storage bin 11, a plurality of ball holes 1314 are radially opened on the left circumference of the fixed cylinder 1311, the ball holes 1314 are located on the left side of the trigger bin 12, and balls 1315 are placed in the ball holes 1314, and a connecting cap 1316 is threadedly connected to the left end of the fixed cylinder 1311;

[0037] The starting sleeve 132 includes a sliding cylinder 1321, a forward trigger cap 1322, a ball pressure ring 1323, a first chamber 1324, a second chamber 1325, a fixing ring 1326, and a reverse trigger plate 1327. The sliding cylinder 1321 is slidably connected along the outer wall of the fixing cylinder 1311. The left end of the sliding cylinder 1321 is threadedly connected with the forward trigger cap 1322. The forward trigger cap 1322 is coaxial with the forward guide rod 2. The sliding cylinder 1321 has a portion of the inner wall integrally formed with a ball pressure ring 1323. The inner wall of the sliding cylinder 1321 on the left and right of the ball pressure ring 1323 is divided into a first chamber 1324 and a second chamber 1325. The right end of the sliding cylinder 1321 is integrally formed with a fixing ring 1326. The reverse trigger plate 1327 is bolted to the fixing ring 1326, and the reverse trigger plate 1327 is also bolted to the reverse push rod 71.

[0038] The inner core shaft 133 includes a sliding shaft 1331, a limiting groove 1332, and a piston sleeve 1333. The sliding shaft 1331 is located on the inner wall of the fixed cylinder 1311 and can be slidably connected coaxially in the fixed cylinder 1311. The left end of the sliding shaft 1331 is provided with an annular limiting groove 1332. The right part of the sliding shaft 1331 is sleeved with a piston sleeve 1333. The piston sleeve 1333 is sealed with the inner wall of the fixed cylinder 1311.

[0039] It is worth mentioning that Fig. 9 As shown, in the normal state, the ball pressing ring 1315 of the trigger mechanism 13 presses the ball 1315, so that the ball 1323 is located at the innermost side of the ball hole 1314, and the contact of the ball hole 1314 with the limit groove 1332 limits the sliding shaft 1331 from moving leftward. Since the piston sleeve 1333 is located on the right side of the vent hole 1313, the air storage tank 134 is blocked from communicating with the trigger chamber 12 through the vent hole 1313, so that the trigger mechanism 13 is not triggered.

[0040] Furthermore, the spacing between the reverse push rods 71 ​​at relative positions ranges from 100 to 200 mm, which limits the spacing between the reverse push rods 71 ​​to not be too large, so that the thrust conduction of the reverse push rods 71 ​​can be concentrated, making the conduction structure more stable.

[0041] Furthermore, a forward trigger connecting tube 21 is fixed to the outside of the forward trigger cap 1322, and a reverse trigger connecting tube 31 is fixed to the outside of the reverse trigger plug 73. The forward guide rod 2 is slidably connected inside the forward trigger connecting tube 21, and the reverse guide rod 3 is slidably connected inside the reverse trigger connecting tube 31, so that the forward guide rod 2 and the reverse guide rod 3 have guiding properties, and can more accurately contact the center of the forward trigger cap 1322 and the reverse trigger plug 73 when subjected to explosive thrust.

[0042] Furthermore, a safety hoop 8 is provided between the sliding cylinder 1321 and the outer wall of the trigger chamber 12 to prevent the sliding cylinder 1321 from moving to the right, thereby preventing the ball pressure ring 1323 from separating from the ball 1315 and preventing the trigger mechanism 13 from being accidentally touched and activated.

[0043] Furthermore, the safety hoop 8 is a circular ring composed of two semicircular structures, which are connected by magnetic attraction to facilitate disassembly and assembly.

[0044] Furthermore, a semi-cylindrical rear safety sleeve 9 is clamped and placed on the reverse push rod 71 between the guide cylinder 74 and the connecting flange 72, so that the sliding cylinder 1321 cannot move to the left, avoiding the ball pressure ring 1323 from separating from the ball 1315, and preventing the trigger mechanism 13 from being accidentally touched and started.

[0045] The working principle of this utility model is:

[0046] Forward explosion: the shock wave generates thrust to the main shock wave receiving disk 4 and the auxiliary shock wave receiving disk 5 of the forward guide rod 2 through the lane, so that the forward guide rod 2 moves to the right. After contacting the forward trigger cap 1322, the sliding cylinder 1321 slides to the right along the fixed cylinder 1311, so that the ball pressure ring 1323 is separated from the ball 1315. The ball 1315 is pushed by the internal sliding shaft 1331 to move to the outside of the ball hole 1314 and enter the first chamber 1324, so as to realize the forward start of the device;

[0047] Reverse explosion: The shock wave generates thrust on the primary shock wave receiving disk 4 and the secondary shock wave receiving disk 5 of the reverse guide rod 3 through the lane, so that the reverse guide rod 3 moves to the left and contacts the reverse trigger plug 73. The force is divided into thrust on the reverse push rod 71 through the connecting flange 72. The reverse push rod 71 makes the sliding cylinder 1321 slide to the left along the fixed cylinder 1311 through the reverse trigger plate 1327, so that the ball pressure ring 1323 is separated from the ball 1315. The ball 1315 is pushed toward the outside of the ball hole 1314 by the internal sliding shaft 1331 and enters the second chamber 1325, realizing the reverse start of the device.

[0048] In combination with the above-mentioned forward explosion and reverse explosion, the ball 1315 has since been freed from the restriction on the sliding shaft 1331. The sliding shaft 1331 is moved to the left by the air pressure in the gas tank 134, causing the piston sleeve 1333 to move to the left side of the vent 1313, so that the vent 1313 is in communication with the gas in the gas tank 134. The high-pressure gas in the gas tank 134 is ejected from the vent 1313, and the high pressure inside the fire extinguishing medium storage bin 11 causes the sealing film 114 to rupture. The fire extinguishing medium is ejected from the fire extinguishing medium storage bin 11, covering the entire tunnel within 30 meters, preventing the spread of flames and stopping the explosion in the tunnel.

[0049] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A two-way activated underground automatic explosion-proof device for mining, comprising an explosion-proof trigger device (1), a forward guide rod (2), a reverse guide rod (3), a main shock wave receiving disk (4), a secondary shock wave receiving disk (5), and a guide rod bracket (6), wherein the two ends of the explosion-proof trigger device (1) are respectively connected to the forward guide rod (2) and the reverse guide rod (3), the ends of the forward guide rod (2) and the reverse guide rod (3) are respectively installed with the main shock wave receiving disk (4), and the secondary shock wave receiving disk (5) is installed near the middle position, the forward guide rod (2) and the reverse guide rod (3) are connected to the inner wall of the tunnel through the guide rod bracket (6), and the forward guide rod (2) and the reverse guide rod (3) are slidably connected along the ends of the guide rod bracket (6); The flameproof trigger device (1) comprises a fire extinguishing medium storage bin (11), a trigger bin (12), and a trigger mechanism (13). The fire extinguishing medium storage bin (11) is trumpet-shaped and contains fire extinguishing medium. The trigger bin (12) is bolted to the left side of the fire extinguishing medium storage bin (11). The trigger bin (12) is a cylindrical structure with a closed left end. The trigger bin (12) is coaxially mounted with the trigger mechanism (13). The device is characterized in that: The flameproof trigger device (1) further comprises a reverse push mechanism (7), the reverse push mechanism (7) comprising a reverse push rod (71), a connecting flange (72), a reverse trigger plug (73), and a guide cylinder (74). The reverse push rods (71) are located inside the fire extinguishing medium storage bin (11) and the trigger bin (12), and there are at least two of them, which are evenly distributed around the circumference of the trigger mechanism (13). The left end of the reverse push rod (71) is connected to the trigger mechanism (13), and the right end is located on the right side of the fire extinguishing medium storage bin (11) and fixed by the connecting flange (72). A reverse trigger plug (73) is fixed at the center of the connecting flange (72), and the reverse trigger plug (73) is coaxial with the reverse guide rod (3). The left end of the guide cylinder (74) is fixed to the trigger bin (12), and the right end is fixed to the cross support frame (113). The reverse push rod (71) is slidably connected along the inside of the guide cylinder (74).

2. A two-way activated underground automatic explosion-proof device for mining according to claim 1, characterized in that: The fire extinguishing medium storage bin (11) comprises a hanging frame (111), a pressure ring (112), a cross support frame (113), and a sealing film (114); a hanging frame (111) is fixed on the top of the fire extinguishing medium storage bin (11) for fixing to the tunnel; a pressure ring (112) is bolted to the opening of the fire extinguishing medium storage bin (11); a cross support frame (113) is integrally formed in the pressure ring (112); and a sealing film (114) is sandwiched between the pressure ring (112) and the opening of the fire extinguishing medium storage bin (11).

3. The two-way activated underground automatic explosion-proof device for mining according to claim 1 is characterized in that: The trigger chamber (12) comprises a pressure cover (121), an inflation cover (122), a pressure gauge (1211), and an inflation connector (1221); the pressure cover (121) and the inflation cover (122) are respectively bolted to upper and lower positions of the trigger chamber (12); the pressure cover (121) is installed with a pressure gauge (1211), and the inflation connector (1221) is installed with a inflation cover (122).

4. A two-way activated underground automatic explosion-proof device for mining according to claim 3, characterized in that: The trigger mechanism (13) comprises a central sleeve (131), a starting sleeve (132), an inner core shaft (133), and an air storage tank (134); the central sleeve (131) is fixed at the axis of the trigger chamber (12); the starting sleeve (132) is sleeved on the outer side of the central sleeve (131); the inner core shaft (133) is arranged inside the central sleeve (131); the left end of the air storage tank (134) is connected to the right end of the central sleeve (131); the right end is fixed to the center of the cross support frame (113); the inside of the air storage tank (134) is connected to the pressure gauge (1211) and the inflation joint (1221) pipe; The central sleeve (131) comprises a fixed sleeve (1311), a thread (1312), a vent hole (1313), a ball hole (1314), a ball (1315), and a connecting cap (1316). The outer wall of the fixed sleeve (1311) is provided with a thread (1312). The fixed sleeve (1311) is coaxially connected to the trigger chamber (12) through the thread (1312). The right side of the fixed sleeve (1311) is threadedly connected to the gas storage tank (134). The right part of the fixed cylinder (1311) is provided with a plurality of vent holes (1313), the vent holes (1313) are communicated with the trigger chamber (12), the left part of the fixed cylinder (1311) is provided with a plurality of ball holes (1314) in a radial direction, the ball holes (1314) are located outside the left side of the trigger chamber (12), balls (1315) are placed in the ball holes (1314), and the left end of the fixed cylinder (1311) is threadedly connected with a connecting cap (1316); The starting sleeve (132) comprises a sliding cylinder (1321), a forward trigger cap (1322), a ball pressure ring (1323), a first chamber (1324), a second chamber (1325), a fixing ring (1326), and a reverse trigger plate (1327). The sliding cylinder (1321) is slidably connected along the outer wall of the fixing cylinder (1311). The left end of the sliding cylinder (1321) is threadedly connected with the forward trigger cap (1322). The forward trigger cap (1322) is connected to the forward guide rod (2) at the same time. The sliding cylinder (1321) has a ball pressure ring (1323) integrally formed on the inner wall thereof, the inner wall of the sliding cylinder (1321) on the left and right of the ball pressure ring (1323) is divided into a first chamber (1324) and a second chamber (1325), a fixing ring (1326) is integrally formed on the right end of the sliding cylinder (1321), the reverse trigger plate (1327) is bolted to the fixing ring (1326), and the reverse trigger plate (1327) is also bolted to the reverse push rod (71); The inner core shaft (133) comprises a sliding shaft (1331), a limiting groove (1332), and a piston sleeve (1333); the sliding shaft (1331) is located on the inner wall of the fixed cylinder (1311) and can be slidably connected coaxially inside the fixed cylinder (1311); an annular limiting groove (1332) is provided at the left end of the sliding shaft (1331); the piston sleeve (1333) is sleeved on the right part of the sliding shaft (1331); and the piston sleeve (1333) is sealed and matched with the inner wall of the fixed cylinder (1311).

5. The two-way activated underground automatic explosion-proof device for mining according to claim 1 is characterized in that: The spacing between the reverse push rods (71) at relative positions ranges from 100 to 200 mm.

6. A two-way activated underground automatic explosion-proof device for mining according to claim 4, characterized in that: A forward triggering connecting tube (21) is fixed to the outside of the forward triggering cap (1322), a reverse triggering connecting tube (31) is fixed to the outside of the reverse triggering plug (73), the forward guide rod (2) is slidably connected inside the forward triggering connecting tube (21), and the reverse guide rod (3) is slidably connected inside the reverse triggering connecting tube (31).

7. The two-way activated underground automatic explosion-proof device for mining according to claim 4 is characterized in that: A safety hoop (8) is provided between the sliding cylinder (1321) and the outer wall of the trigger chamber (12).

8. The two-way activated underground automatic explosion-proof device for mining according to claim 7 is characterized in that: The safety hoop (8) is a circular ring composed of two semicircular structures, which are connected by magnetic attraction.

9. The two-way activated underground automatic explosion-proof device for mining according to claim 1 is characterized in that: A semi-cylindrical rear safety sleeve (9) is clamped and placed on the reverse push rod (71) between the guide cylinder (74) and the connecting flange (72).

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