Fireproof partition device for underground coal mine

Abstract

The present application relates to the technical field of coal mine safety, in particular to a kind of coal mine underground fireproof partition device, including fire door in roadway and drive device fixedly connected at the top of roadway and fire door, the loose card door is equipped in fire door, the protective card door is equipped in the loose card door, the push plate that can be relative to the entire fire door is equipped in the protective card door, multiple crushing drill bits are equipped in the push plate, for crushing the obstacle before fire door.The present application not only can impact force to the roadway play certain buffering protection, but also can break and clear the obstacle before fire door, prevent its obstacle escape channel, while the fire door structure of separation, without affecting the entire fire door partition device effect, escape personnel can conveniently open fire door, quickly escape.

Description

Technical Field

[0001] This invention relates to the field of coal mine safety technology, specifically to a fireproof isolation device for underground coal mines. Background Technology

[0002] Fire doors are doors that can meet the requirements of fire resistance stability, integrity, and heat insulation for a certain period of time. They are fire-resistant partitions with a certain degree of fire resistance, installed in fire compartments, evacuation stairwells, vertical shafts, and other similar locations. In addition to the functions of ordinary doors, fire doors also prevent the spread of fire and smoke, thus ensuring the safe evacuation of personnel.

[0003] Patent CN211370495U discloses a fireproof partition door for underground coal mines, comprising two symmetrical sets of side door frames. A lower door frame and an upper door frame are symmetrically installed at the top and bottom of each set of side door frames. The lower door frame, the upper door frame, and the two sets of side door frames constitute a door frame. Hinges are fixed to the inner walls of the side door frames, and fireproof doors are connected to the outer walls of the hinges. The fireproof doors are rotatably connected to the side door frames via the hinges. A steel plate is installed on the outer wall of the fireproof door, and an asbestos board is adhered to the inner wall of the steel plate. The fireproof door and a wire mesh door are installed on the door frame, allowing for various combinations to suit different fire conditions. The fireproof door consists of a steel plate, an asbestos board, and layers of fire-resistant sand, arranged from the outside in. This design consumes less steel components, saving costs, and the asbestos board and fire-resistant sand have excellent fire-resistant properties, preventing large fires from burning through the fireproof door and causing damage to the outside environment.

[0004] While this technology improves the safety of underground operations to some extent, it also presents some problems. First, fire doors cannot provide self-cushioning protection in the event of an underground fire or even an explosion; second, fire doors are easily blocked by obstacles such as falling rocks, hindering escape.

[0005] In conclusion, it is necessary to improve the existing fireproof isolation devices in coal mines. Summary of the Invention

[0006] To address the aforementioned problems, this invention provides a fireproof partition device for underground coal mines, comprising: a fireproof door in a roadway and a drive device fixedly connected to the fireproof door at the top of the roadway. The drive device includes: a lead screw and a plurality of lead screw nuts matching the lead screw. A slide rail corresponding to the lead screw is provided at the top of the roadway. One end of the plurality of lead screw nuts passes through the slide rail and is fixedly connected to the fireproof door. One end of the lead screw near the side wall of the roadway is fixedly connected to the output shaft of a drive motor, and the other end is rotatably fixed to a support base. The fireproof door is provided with a tension locking door, and the tension locking door is provided with a protective locking door. Furthermore, the fire door includes an installation groove with an internal through hole, and elastic locking slots are provided at the upper and lower ends of the installation groove. The installation groove is used to place the elastic locking door and fix the elastic locking door through the elastic locking slots. Furthermore, the adjustable door includes a storage slot with a one-way opening inside. The upper and lower ends of the storage slot are L-shaped card seats. The bottom plate of the storage slot is provided with electromagnetic adsorption seats at both ends that overlap with the card seats. One end of a plurality of return springs is fixedly connected to the electromagnetic adsorption seats, and the other end of the plurality of return springs is fixedly connected to an adjustable card frame. The adjustable card frame matches the adjustable door slot. Furthermore, the protective door includes multiple hydraulic pumps fixed to the bottom plate of the storage slot, the output shafts of the multiple hydraulic pumps are fixedly mounted with a three-stage telescopic frame, and the top of the multiple three-stage telescopic frame is fixedly connected to a mounting plate. Furthermore, on the end face of the mounting plate away from the receiving groove, multiple sets of crushing motors are provided along the central axis perpendicular to the mounting plate. The output shaft of the crushing motor is fixedly connected to the active rotating rod. Driven rotating rods are symmetrically provided on both sides of the active rotating rod. The end of the driven rotating rod near the mounting plate is rotatably fixed to the mounting plate through a rotating seat. A turntable is provided inside the rotating seat. Multiple rotating balls are provided between the turntable and the rotating seat. A conveyor belt is fitted on the active rotating rod and the driven rotating rods on both sides. Crushing drill bits are provided at the ends of the multiple active rotating rods and driven rotating rods away from the mounting plate. Furthermore, multiple water tanks are fixedly installed on the end face of the mounting plate away from the storage groove, and each of the multiple water tanks is equipped with a water pump; Furthermore, the end face of the mounting plate away from the storage slot is provided with multiple reset shafts. One end of the reset shaft is fixedly connected to a reset connecting spring, and the other end of the reset connecting spring is fixedly connected to the push plate. The upper and lower ends of the push plate are structured to match the shape of the card seat. The push plate is also provided with multiple drill holes that match the breaker drill bit. Spray nozzles are provided around the drill holes, and the spray nozzles are connected to the water pump on the water tank inside the mounting plate. Furthermore, the front end of the push plate is provided with a handle frame, and a button for controlling the electromagnetic adsorption seat is installed on the inner side of the handle frame; Furthermore, the side wall of the fire door is provided with multiple buffer seats; Furthermore, a pressure sensor is installed at the bottom of the tunnel.

[0007] Compared with the prior art, the beneficial effects of the present invention are as follows: 1. Safety Protection. This invention uses a buffer seat between two sets of fire doors to provide cushioning protection when subjected to impact. At the same time, the fire doors act as a barrier to prevent the spread of fire, and the spray nozzles at the front end activate to provide cooling protection, preventing other disasters caused by localized high temperatures.

[0008] 2. Facilitates escape. This invention uses a push plate and a front-end crushing drill bit to break up and clear obstacles in front of the fire door, preventing obstruction of escape routes. At the same time, the separate fire door structure allows escapers to easily open the fire door and escape quickly without affecting its isolation function. Attached Figure Description

[0009] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the environment in which the present invention is used; Figure 3 This is the main view of the present invention; Figure 4 This is a schematic diagram of the structure of the present invention when it is opened; Figure 5 This is a structural diagram and a partially enlarged view of the buffer seat of the present invention; Figure 6 This is an assembly diagram of the fire door and the elastic locking door of the present invention; Figure 7 This is an assembly diagram of the elastic locking door and the protective locking door of the present invention; Figure 8 This is the present invention. Figure 7 Enlarged view of a section at point B in the middle; Figure 9 This is a schematic diagram of the structure of the three-stage telescopic frame of the protective card door of the present invention when it is extended; Figure 10 This is a schematic diagram of the structure of the protective card door of the present invention; Figure 11 This is a schematic diagram of the internal structure of the protective card door of the present invention; Figure 12 This is the present invention. Figure 11 Enlarged view of a section at point D; Figure 13 This is the present invention. Figure 11 Enlarged view of a section at point C; Figure 14 This is the present invention. Figure 1 Enlarged view of a portion of point A in the middle; In the diagram: 1. Channel; 2. Slide rail; 3. Drive motor; 4. Lead screw; 5. Lead screw nut; 6. Fire door; 7. Tightening / loosening door; 8. Protective door; 9. Water tank; 10. Pressure sensor; 61. Buffer seat; 62. Buffer socket; 63. Mounting slot; 64. Tightening / loosening slot; 65. Slide rail slot; 611. Buffer body; 612. Buffer groove; 613. Buffer spring; 614. Buffer plate; 615. Storage baffle; 616. Buffer slider; 71. Storage groove; 72. Locking mechanism. 73. Seat; 74. Tightening bracket; 75. Electromagnetic adsorption seat; 86. Return spring; 87. Hydraulic pump; 88. Three-stage telescopic frame; 89. Mounting plate; 80. Crushing motor; 81. Return shaft; 82. Rotary seat; 83. Crushing drill bit; 84. Push plate; 85. Handle holder; 86. Driving rod; 87. Conveyor belt; 88. Driven rod; 89. Turntable; 80. Return connecting spring; 81. Rotary ball; 82. Drill hole; 83. Spray nozzle; 94. Water pump. Detailed Implementation

[0010] The technical solution adopted by the present invention will be clearly and completely described below with reference to the accompanying drawings and specific embodiments.

[0011] like Figure 1-3 As shown, the present invention provides a fireproof partition device for underground coal mines, including a fireproof door 6 in a roadway 1 and a drive device fixedly connected to the fireproof door 6 at the top of the roadway 1. The drive device includes a lead screw 4 and a plurality of lead screw nuts 5 that match the lead screw 4. A slide rail 2 corresponding to the lead screw 4 is provided at the top of the roadway 1. One end of the plurality of lead screw nuts 5 passes through the slide rail 2 and is fixedly connected to the fireproof door 6. One end of the lead screw 4 near the wall of the roadway 1 is fixedly connected to the output shaft of the drive motor 3, and the other end is rotatably fixed on the support.

[0012] Specifically, the drive motor 3 drives the lead screw 4 to rotate, which in turn drives the lead screw nut 5 on the lead screw 4 to move along the axial direction of the lead screw 4. Since the bottom end of the lead screw nut 5 is fixedly connected to the fire door 6, the drive device can control the fire door 6 to move out of the side wall of the tunnel 1 until the entire tunnel 1 is closed.

[0013] The underground fireproof isolation device in the coal mine can use a single set of fireproof doors 6 to complete the closure of the roadway 1. When the roadway 1 is in normal passage, the fireproof doors 6 can be hidden in the grooves on the side wall of the roadway 1. When a fire occurs and closure is required, the fireproof doors 6 are brought out from the grooves by the drive device until the entire roadway 1 is closed.

[0014] As a preferred technical solution, the present invention uses two sets of fire doors 6 with identical structures to close the tunnel 1. That is, the two sets of fire doors 6 are symmetrically arranged on the left and right sides of the tunnel 1. When the tunnel 1 is in normal passage, the two sets of fire doors 6 are hidden in the grooves of the side walls on both sides of the tunnel 1. When it is necessary to close the tunnel 1, the two sets of fire doors 6 are controlled by two driving devices to move from the left and right sides of the tunnel 1 towards the center of the tunnel 1 until the tunnel 1 is closed.

[0015] Furthermore, such as Figure 4 As shown, when the two sets of fire doors 6 are closed, at the junction of the two sets of fire doors 6, one set of fire doors 6 has multiple buffer seats 61 on its side wall, and the other set of fire doors 6 has multiple buffer sockets 62 on its side wall. The buffer sockets 62 match the buffer seats 61, that is, when the two sets of fire doors 6 are closed, the multiple buffer seats 61 can be inserted into the multiple buffer sockets 62, further promoting the closure of the two sets of fire doors 6.

[0016] Multiple buffer seats 61 are fixed to the side wall of the fire door 6 using the same structure and method. The following description uses one of them as an example. Figure 5 As shown, the fire door 6 has two parallel sliding rail grooves 65 on its side wall. The buffer seat 61 is fixed to the side wall of the fire door 6 by sliding connection through the two sliding rail grooves 65. Specifically, the buffer seat 61 includes a rectangular buffer body 611 and buffer plates 614 arranged parallel on both sides of the buffer body 611. The buffer plates 614 on both sides are connected to the buffer body 611 in the middle by multiple buffer springs 613. Each of the two buffer plates 614 is provided with a buffer slider 616 at one end near the side wall of the fire door 6. The buffer slider 616 is slidably connected to the sliding rail groove 65 to fix the buffer seat 61 to the side wall of the fire door 6.

[0017] In this example, when the two closed fire doors 6 are impacted, the buffer seat 61 located in the buffer socket 62 at the junction of the two fire doors 6 can buffer the impact force through the buffer spring 613 installed inside it.

[0018] Furthermore, both ends of the two buffer plates 614 are provided with storage baffles 615. The storage baffles 615 match the buffer grooves 612 provided at the upper and lower ends of the buffer body 611. When the two sets of fire doors 6 are impacted after being closed, the storage baffles 615 can be inserted into the buffer grooves 612 to further improve the buffering effect of the buffer seat 61.

[0019] When a single fire door 6 is used to close off the alleyway 1, the buffer port 62 can be set on the corresponding side wall of the alleyway 1 to achieve the above function.

[0020] The underground fireproof isolation device provided by this invention can not only buffer the impact to a certain extent through the buffer seat 61 when the roadway 1 needs to be closed in the event of fire, explosion or other situations, but also push open the protective door 8 and clear it through the breaking drill bit 87 inside the protective door 8. After clearing the obstacle, the trapped personnel can be easily rescued by removing the loose and tight door 7 without opening the fire door 6. The specific implementation of the above functions will be described below.

[0021] like Figure 6 As shown, the fire door 6 includes an installation groove 63 with an internal through hole. The upper and lower ends of the installation groove 63 are provided with tensioning slots 64. The installation groove 63 is used to place the tensioning door 7 and fix the tensioning door 7 through the tensioning slots 64.

[0022] like Figure 7-8 As shown, the interior of the elastic locking door 7 is provided with a storage groove 71 with a one-way opening. The upper and lower ends of the storage groove 71 are L-shaped card seats 72. The bottom plate of the storage groove 71 and the end of the card seat 72 that overlap are provided with electromagnetic adsorption seats 74. One end of a plurality of return springs 75 is fixedly connected to the electromagnetic adsorption seat 74. The other end of the plurality of return springs 75 is fixedly connected to an elastic locking bracket 73. The elastic locking bracket 73 matches the elastic locking groove 64. When the adjustable door 7 is placed in the mounting slot 63, the adjustable bracket 73 is inserted into the corresponding adjustable slot 64. Even though the adjustable door 7 is fixed inside the fire door 6, when the electromagnetic adsorption base 74 is energized, it will generate a magnetic force. Under the action of the magnetic force, the return spring 75 is attracted, causing the adjustable bracket 73 to move towards the electromagnetic adsorption base 74 and disengage from the adjustable slot 64. At this time, the adjustable door 7 is no longer fixed to the fire door 6. It is possible to energize the electromagnetic adsorption base 74 by external force without opening both sets of fire doors 6. Under the action of the magnetic force, the return spring 75 is attracted, causing the adjustable bracket 73 to move towards the electromagnetic adsorption base 74 and disengage from the adjustable slot 64. The adjustable door 7 can then be removed and escaped from the mounting slot 63 with a through hole inside the fire door 6. After the energizing is stopped, the adjustable slot 64 can be returned to its original position under the action of the return spring 75, thus fixing the adjustable door 7 to the fire door 6 again.

[0023] Furthermore, such as Figure 9-10 As shown, the storage slot 71 is provided with a protective door 8 inside. The protective door 8 includes multiple hydraulic pumps 81 fixed on the bottom plate of the storage slot 71. The output shafts of the multiple hydraulic pumps 81 are fixedly mounted with three-stage telescopic frames 82. The top ends of the multiple three-stage telescopic frames 82 are fixedly connected to the mounting plate 83. Specifically, under the action of the hydraulic pumps 81, the three-stage telescopic frames 82 are controlled to extend step by step and push the mounting plate 83 out of the storage slot 71. On the end face of the mounting plate 83 away from the storage slot 71, such as Figure 11-12 As shown, multiple sets of crushing motors 84 are arranged on the central axis perpendicular to the mounting plate 83. The output shaft of the crushing motor 84 is fixedly connected to the driving rotating rod 841. Driven rotating rods 843 are symmetrically arranged on both sides of the driving rotating rod 841. The end of the driven rotating rod 843 near the mounting plate 83 is rotatably fixed to the mounting plate 83 through a rotating seat 86. A turntable 8431 is provided inside the rotating seat 86. Multiple rotating balls 861 are provided between the turntable 8431 and the rotating seat 86, so that the driven rotating rod 843 rotates relative to the rotating seat 86 under the cooperation of the turntable 8431 and the rotating balls 861.

[0024] A conveyor belt 842 is fitted onto the active rotating rod 841 and the driven rotating rods 843 on both sides. The active rotating rod 841 is driven to rotate by the crushing motor 84, and the rotating active rotating rod 841 can drive the driven rotating rods 843 on both sides to rotate through the conveyor belt 842. Figure 13 As shown, a breaker drill bit 87 is provided at the end of each of the multiple active rotating rods 841 and driven rotating rods 843 away from the mounting plate 83.

[0025] Multiple water tanks 9 are also fixedly installed on the end face of the mounting plate 83 away from the storage groove 71, and each of the multiple water tanks 9 is equipped with a water pump 91.

[0026] Multiple reset shafts 85 are provided on the end face of the mounting plate 83 away from the storage groove 71, such as... Figure 13 As shown, one end of the reset connecting spring 851 is fixedly connected to the reset connecting shaft 85; the other end of the reset connecting spring 851 is fixedly connected to the push plate 88. The upper and lower ends of the push plate 88 are structures that match the shape of the card seat 72. The push plate 88 is also provided with a plurality of drill holes 881 that match the crushing drill bit 87.

[0027] Specifically, the mounting plate 83 is connected and fixed to the push plate 88 through multiple reset shafts 85. The upper and lower ends of the push plate 88 have shapes that match the card seat 72. When the three-stage telescopic frame 82 is not extended, the entire protective card door 8 forms an integral protective card door 8 through the cooperation of the push plate 88 and the card seat 72. At this time, the reset shaft 85 used to connect the push plate 88 at the front end of the protective card door 8 to the mounting plate 83 has a reset connecting spring 851 inside it in a tensile state. The breaking drill bit 87 on the mounting plate 83 is hidden in the drill hole 881 on the push plate 88. When the three-stage telescopic frame 82 extends, it not only drives the mounting plate 83 and the push plate 88 to extend, but the reset connecting spring 851 is no longer in tension and begins to reset, and drives the push plate 88 to cause the breaking drill bit 87 to protrude from the drill hole 881.

[0028] Furthermore, such as Figure 14As shown, the drill hole 881 is provided with spray nozzles 882 around it, and the spray nozzles 882 are connected to the water pump 91 on the water tank 9 inside the mounting plate 83.

[0029] Furthermore, the front end of the push plate 88 is provided with a handle frame 89; a control button is installed on the inner side of the handle frame 89. When personnel are escaping, when the escaping personnel reach the fire door 6 after the obstacle has been cleared, they hold the handle frame 89 and press the button to control the electromagnetic adsorption seat 74 to be energized and magnetized to attract the tension bracket 73 into the tension door 7. Then the tension door 7 can be opened, and the escaping personnel can escape through the installation slot 63.

[0030] In this embodiment, the crushing motor 84 is started, which drives the front crushing drill bit 87 to rotate and crush the obstacle to facilitate clearing and prevent it from affecting the escape of personnel. At the same time, the water pump 91 is started to spray the cooling liquid in the water tank 9 through the water pipe built into the push plate 88 from the spray nozzle 882 to prevent the local high temperature of the crushing drill bit 87 from causing other disasters.

[0031] Furthermore, a pressure sensor 10 is provided at the bottom of the alleyway 1 to detect pressure signals. That is, when there are rocks or other debris blocking the fire door 6, the pressure sensor 10 provides an activation signal to the entire fire door 6, so as to realize the function of automatically clearing obstacles in front of the fire door 6.

[0032] The specific working process of this invention is as follows: When a fire occurs underground and it is necessary to close the tunnel 1, the drive motor 3 is started. The drive motor 3 drives the lead screw 4 to rotate, and the lead screw 4 drives the lead screw nut 5 to move. At this time, the two sets of fire doors 6 are moved out from the side wall of the tunnel 1 until the buffer seat 61 is inserted into the buffer socket 62, and the two sets of fire doors 6 are closed.

[0033] During the protection process, the buffer seat 61 plays a certain role in buffering protection. When the fire door 6 is impacted, the buffer spring 613 and buffer plate 614 inside the buffer seat 61 buffer the impact force.

[0034] When an explosion occurs or an obstacle blocks the fire door 6, the pressure sensor 10 senses an increase in pressure and automatically controls the hydraulic pump 81 to start. The three-stage telescopic frame 82 unfolds and pushes the mounting plate 83. The mounting plate 83 moves forward. At this time, the reset connecting spring 851 in the reset shaft 85, which is in a stretched state, slowly returns to its initial state. At the same time, the breaking drill bit 87 is removed from the drill hole 881.

[0035] The three-stage telescopic frame 82 continues to extend and push the obstacle in front. At the same time, the crushing motor 84 starts and drives the crushing drill bit 87 at the front to rotate, breaking the obstacle to facilitate clearing and prevent it from affecting personnel escape. At the same time, the water pump 91 starts and sprays the cooling liquid in the water tank 9 through the water pipe built into the push plate 88 from the spray nozzle 882 to prevent the local high temperature of the crushing drill bit 87 from causing other disasters.

[0036] When personnel escape during a disaster underground, if they reach the fire door 6 after the obstacle has been cleared, they can hold the handle 89, which has a control button installed on the inside. Pressing the button will energize the electromagnetic adsorption seat 74 to generate magnetism, which will attract the tension bracket 73 into the tension door 7. Then the tension door 7 can be opened, and the escaped personnel can escape through the installation slot 63.

[0037] Finally, it should be noted that the above descriptions are merely preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A fireproof partition device for underground coal mines, comprising a fireproof door (6) in a roadway (1) and a drive device located at the top of the roadway and fixedly connected to the fireproof door, the drive device comprising: A lead screw (4) and a plurality of lead screw nuts (5) that match the lead screw (4). A slide (2) corresponding to the lead screw (4) is provided at the top of the tunnel (1). One end of the plurality of lead screw nuts (5) passing through the slide (2) is fixedly connected to the fire door (6). One end of the lead screw (4) near the side wall of the tunnel (1) is fixedly connected to the output shaft of the drive motor (3), and the other end is rotatably fixed on the support. The fire door (6) is characterized in that a tensioning door (7) is provided inside the fire door (6), and a protective door (8) is provided inside the tensioning door (7). The protective door (8) includes multiple hydraulic pumps (81) fixed on the bottom plate of the storage slot (71), the output shafts of the multiple hydraulic pumps (81) are fixedly mounted with a three-stage telescopic frame (82), and the top of the multiple three-stage telescopic frames (82) is fixedly connected to a mounting plate (83). On the end face of the mounting plate (83), multiple sets of crushing motors (84) are provided along the central axis perpendicular to the mounting plate (83). The output shaft of the crushing motor (84) is fixedly connected to the active rotating rod (841). Driven rotating rods (843) are symmetrically provided on both sides of the active rotating rod (841). The end of the driven rotating rod (843) near the mounting plate (83) is rotatably fixed on the mounting plate (83) through a rotating seat (86). A turntable (8431) is provided inside the rotating seat (86). Multiple rotating balls (861) are provided between the turntable (8431) and the rotating seat (86). A conveyor belt (842) is sleeved on the active rotating rod (841) and the driven rotating rods (843) on both sides. A crushing drill bit (87) is provided at the end of the multiple active rotating rods (841) and the driven rotating rods (843) away from the mounting plate (83). The fire door (6) is provided in two sets, located at the junction of the two sets of fire doors (6). One set of fire doors (6) has multiple buffer seats (61) on its side wall, and the other set of fire doors (6) has multiple buffer sockets (62) on its side wall. The buffer sockets (62) are plugged into the buffer seats (61). The side wall of the fire door (6) is provided with two parallel sliding rail grooves (65), and the buffer seats (61) are slidably connected to the sliding rail grooves (65). The buffer seat (61) includes a rectangular buffer body (611) and buffer plates (614) arranged parallel to both sides of the buffer body (611). The buffer plates (614) on both sides are connected to the buffer body (611) in the middle by multiple buffer springs (613). Each of the two buffer plates (614) is provided with a buffer slider (616) at one end near the side wall of the fire door (6). The buffer slider (616) is slidably connected to the slide rail groove (65).

2. The underground fireproof isolation device for coal mines according to claim 1, characterized in that, The fire door (6) includes an installation groove (63) with a through hole inside. The upper and lower ends of the installation groove (63) are provided with tensioning slots (64). The installation groove (63) is used to place the tensioning door (7) and fix the tensioning door (7) through the tensioning slots (64).

3. The underground fireproof isolation device for coal mines according to claim 2, characterized in that, The adjustable door (7) includes a storage groove (71) with a one-way opening inside. The upper and lower ends of the storage groove (71) are L-shaped card seats (72). The bottom plate of the storage groove (71) and the card seats (72) are provided with electromagnetic adsorption seats (74) at both ends. One end of a plurality of return springs (75) is fixedly connected to the electromagnetic adsorption seat (74). The other end of the plurality of return springs (75) is fixedly connected to the adjustable card frame (73). The adjustable card frame (73) matches the adjustable card groove (64).

4. The underground fireproof isolation device for coal mines according to claim 1, characterized in that, Multiple water tanks (9) are also fixedly installed on the end face of the mounting plate (83) away from the storage groove (71), and each of the multiple water tanks (9) is equipped with a water pump (91).

5. The underground fireproof isolation device for coal mines according to claim 4, characterized in that, On the end face of the mounting plate (83) away from the storage slot (71), there are multiple reset shafts (85). One end of the reset connecting spring (851) is fixedly connected to the reset shaft (85), and the other end of the reset connecting spring (851) is connected and fixed to the push plate (88). The upper and lower ends of the push plate (88) match the shape of the card seat (72). The push plate (88) also has multiple drill holes (881) that match the crushing drill bit (87). Spray nozzles (882) are provided around the drill holes. The spray nozzles (882) are connected to the water pump (91) on the water tank (9) inside the mounting plate (83).

6. The underground fireproof isolation device for coal mines according to claim 5, characterized in that, The push plate (88) has a handle frame (89) at the front end, and a button for controlling the electromagnetic adsorption seat (74) is installed on the inner side of the handle frame (89).

7. The underground fireproof isolation device for coal mines according to claim 1, characterized in that, A pressure sensor (10) is installed at the bottom of the tunnel (1).

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