Automatic fireproof door for coal mine roadway

Abstract

The utility model discloses a kind of automatic isolation fireproof doors of coal mine well and alley, it includes two parallelly arranged isolation door frames, the middle part of isolation door frame is uniformly fixed with vertical plate, one side of vertical plate is rotatably connected with pedestrian transport isolation door, the side of vertical plate, away from pedestrian transport isolation door, is fixedly connected with horizontal plate, horizontal plate is rotatably connected with the isolation door above floating groove;Vertical plate is rotatably connected with the isolation door on the upper portion of belt conveyor;Isolation door frame bottom is fixed with door sill, door sill is rotatably connected with bottom isolation door;Rotatably connected with middle isolation door between vertical plate and isolation door frame.When fire occurs, through first pneumatic jack and second pneumatic jack, the closing action of pedestrian transport isolation door, the isolation door on the upper portion of belt conveyor, the isolation door above floating groove, middle isolation door and bottom isolation door is completed, completely plugging is realized at the connecting section of belt conveyor through fire door, the sealing between fire door and belt conveyor is improved, the risk of flame and toxic gas leakage spread is reduced, which is beneficial to the personal safety and coal mine safety of underground operating personnel.

Description

Technical Field

[0001] This utility model relates to the field of safety protection for underground equipment in coal mines, and in particular to an automatic fireproof isolation door for coal mine tunnels. Background Technology

[0002] In underground coal mining, belt conveyors are installed in the main transport roadways to transport coal. As the core equipment for coal transportation, these conveyors are typically laid out along the roadway and main roadway, transporting coal from the working face to the main roadway, and then via transport equipment within the main roadway (such as transfer conveyors and belt conveyors) to the bottom yard or the surface, ensuring continuous production. Existing underground coal mine fire doors are usually single isolation doors, located at the connection between the main roadway and the working face roadway (transport or return air roadway). During normal production, the fire door remains open, the belt conveyor runs continuously, and coal is transported from the working face through the roadway to the main roadway, and then transported out through the main roadway transport system.

[0003] In related technologies, when a fire occurs near the coal mining face, fire doors are closed to prevent fire and smoke from entering the main roadway. Physical isolation and emergency closure mechanisms are used to block the fire's spread. However, because the belt conveyor passes through the connection point of the fire door, when the fire door is closed, there are no obstructions between the fire door and areas above the floating trough belt, between the floating trough belt and the bottom trough belt, and below the bottom trough belt. This results in poor sealing between the fire door and the belt conveyor, posing a risk of flame and toxic gas leakage and spread from these areas, adversely affecting the personal safety of workers and the safety of the coal mine. Utility Model Content

[0004] In order to improve the sealing between the belt conveyor and the fire door in the event of a fire and prevent the leakage and spread of flames and toxic gases, this application provides an automatic fire-resistant isolation door for coal mine tunnels.

[0005] This utility model provides an automatic fireproof isolation door for coal mine tunnels, employing the following technical solution:

[0006] An automatic fireproof isolation door for coal mine tunnels includes two parallel isolation door frames:

[0007] Each of the isolation door frames is fixedly provided with a vertical plate. A pedestrian transport isolation door is rotatably connected to one side of the vertical plate. A horizontal plate is fixedly connected to the side of the vertical plate away from the pedestrian transport isolation door. The horizontal plate is rotatably connected to an isolation door above the conveyor belt trough that is compatible with the conveyor belt trough.

[0008] The side of the upright plate away from the pedestrian transport isolation door is rotatably connected to the upper isolation door of the belt conveyor. The upper isolation door of the belt conveyor is located between the horizontal plate and the upper end of the isolation door frame. The space between the horizontal plate and the upper end of the isolation door frame is set as the upper passage. The cross-sectional area of ​​the upper isolation door of the belt conveyor is matched with that of the upper passage.

[0009] A threshold is fixed at the bottom of the isolation door frame. The threshold is rotatably connected to the bottom isolation door. The space between the bottom groove tape and the threshold is set as the lower passage. The cross-sectional area of ​​the bottom isolation door is matched with that of the lower passage.

[0010] The space between the floating trough tape and the bottom trough tape is set as a trough chamber, and a central isolation door that matches the cross-sectional area of ​​the trough chamber is rotatably connected between the upright plate and the isolation door frame.

[0011] Optionally, there is a cavity between the two isolation door frames, and each isolation door frame is connected to a material conveying pipe. The material conveying pipe is connected to a fire-resistant foam material box assembly, and the side of the material conveying pipe closest to the isolation door frame passes through the corresponding isolation door frame and communicates with the cavity.

[0012] Optionally, all of the conveying pipelines are connected to pneumatic shut-off valves.

[0013] Optionally, both sides of the isolation door frame are equipped with a linkage assembly for synchronously closing the upper isolation door, middle isolation door, and bottom isolation door of the control float. The linkage assembly includes a second pneumatic jack, a first fixed pulley, a second fixed pulley, a first wire rope, a second wire rope, and a third wire rope. The first and second fixed pulleys are fixedly connected to the isolation door frame. One end of the first, second, and third wire ropes is fixedly connected to the output end of the second pneumatic jack. The first wire rope is wound around the first fixed pulley and fixedly connected to the upper isolation door of the float. The second wire rope is wound around the first fixed pulley and fixedly connected to the middle isolation door. The third wire rope is wound around the first and second fixed pulleys in sequence and fixedly connected to the bottom isolation door.

[0014] Optionally, the horizontal plate is fixedly connected to a right-angle plate, the isolation door above the floating trough is fixedly connected to a U-shaped block, the right-angle plate has a positioning hole that matches the U-shaped block, the U-shaped block has a U-shaped groove, the output end of the second pneumatic jack is fixedly connected to a fourth steel wire rope, and the fourth steel wire rope is fixedly connected to a support pin that matches the U-shaped groove.

[0015] Optionally, a first pneumatic jack is provided between the pedestrian transport isolation door and the upper isolation door of the belt conveyor on the same side. The output end of the first pneumatic jack is rotatably connected to two isolation door action linkages, which are respectively rotatably connected to the pedestrian transport isolation door and the upper isolation door of the belt conveyor.

[0016] Optionally, each of the isolation door frames is provided with a drain pipe hole and several ventilation and drainage pipe holes, and each of the upright plates is provided with several cable holes. The drain pipe holes, ventilation and drainage pipe holes and cable holes are all connected to the cavity.

[0017] In summary, this application includes at least one of the following beneficial technical effects:

[0018] 1. In the event of a fire, the first and second pneumatic jacks are used to close the pedestrian transport isolation door, the upper isolation door of the belt conveyor, the upper isolation door of the floating chute, the middle isolation door, and the bottom isolation door. This achieves complete sealing at the connection point where the belt conveyor passes through the fire door, improving the sealing between the fire door and the belt conveyor, preventing flames and toxic gases from passing through the fire door, making fire isolation more thorough, reducing the risk of flame and toxic gas leakage and spread, and helping to protect the personal safety of underground workers and the safety of the coal mine.

[0019] 2. After the fire door is closed, the fire-resistant foam material in the fire-resistant foam material box group flows through the material conveying pipe and is sprayed into the cavity between the two isolation door frames by opening the pneumatic shut-off valve. It expands, foams and solidifies in the cavity, filling and sealing the cavity to form a flame-retardant isolation zone. Fire prevention and fire extinguishing are linked to form a double safety barrier to further suppress the fire.

[0020] 3. The first pneumatic jack, the second pneumatic jack, and the pneumatic shut-off valve are linked with the underground fire prevention and extinguishing monitoring and early warning system. The first and second pneumatic jacks are the core actuators, and together with the pneumatic shut-off valve, they provide early warning and rapid response to fires, enabling the rapid closing of fire doors and the spraying of fire extinguishing materials. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the overall structure of an automatic fireproof door for coal mine tunnels according to an embodiment of this application.

[0022] Figure 2 This diagram aims to highlight the positions of the belt conveyor and the isolation door frame.

[0023] Figure 3 This diagram aims to highlight the positions of the bottom groove tape and the central isolation door.

[0024] Figure 4 This is a schematic diagram of the closed state of the automatic fireproof isolation doors in a coal mine tunnel.

[0025] Figure 5 This is a schematic diagram showing the state when the support pin is inserted into the U-shaped block.

[0026] Figure 6 This is a schematic diagram showing the state when the support pin is separated from the U-shaped block.

[0027] Figure 7 This is a schematic diagram of the control mechanism when the automatic fireproof isolation doors in coal mine tunnels are linked with the fire prevention and extinguishing monitoring and early warning system.

[0028] Explanation of reference numerals in the attached drawings: 100, belt conveyor; 110, belt trough; 120, bottom trough belt; 1, isolation door frame; 2, vertical plate; 3, pedestrian transport isolation door; 4, horizontal plate; 5, isolation door above the trough; 6, upper isolation door of the belt conveyor; 7, threshold; 8, bottom isolation door; 9, middle isolation door; 91, slot; 10, material conveying pipe; 11, fire-retardant foam material box assembly; 12, pneumatic shut-off valve; 13. Linkage components; 14. Second pneumatic jack; 15. First fixed pulley; 16. Second fixed pulley; 17. First wire rope; 18. Second wire rope; 19. Third wire rope; 20. Right angle plate; 21. U-shaped block; 23. U-shaped groove; 24. Fourth wire rope; 25. Support pin; 26. First pneumatic jack; 27. Isolation door action linkage; 28. Drainage pipe hole; 29. ​​Air and water drainage pipe hole; 30. Cable hole. Detailed Implementation

[0029] The present application will be further described in detail below with reference to all the accompanying drawings.

[0030] This application discloses an automatic fireproof isolation door for coal mine tunnels.

[0031] Example

[0032] Reference Figure 1 and Figure 2 An automatic fireproof isolation door for coal mine tunnels includes two parallel isolation door frames 1. A vertical plate 2 is fixed to the middle of each isolation door frame 1. A pedestrian transport isolation door 3 is rotatably connected to one side of each vertical plate 2, with the height of the pedestrian transport isolation door 3 being approximately equal to the height of the isolation door frame 1. A horizontal plate 4 is fixedly connected to the side of the vertical plate 2 opposite to the pedestrian transport isolation door 3, and the end of the horizontal plate 4 opposite to the vertical plate 2 is fixedly connected to the isolation door frame 1. A belt conveyor upper isolation door 6 is rotatably connected to the side of the vertical plate 2 opposite to the pedestrian transport isolation door 3. Multiple hinges can be installed on the vertical plate 2 and the belt conveyor upper isolation door 6, fixing the outer pages of the hinges to the vertical plate 2 and the inner pages of the hinges to the belt conveyor upper isolation door 6. The belt conveyor upper isolation door 6 is located between the horizontal plate 4 and the upper end of the isolation door frame 1. The space between the horizontal plate 4 and the upper end of the isolation door frame 1 is designated as an upper passage, and the cross-sectional area of ​​the belt conveyor upper isolation door 6 is adapted to the upper passage.

[0033] Reference Figure 3 and Figure 4A first pneumatic jack 26 is installed between the pedestrian transport isolation door 3 and the upper isolation door 6 of the belt conveyor on the same side. The operator can fix the first pneumatic jack 26 to the top of the tunnel. The output end of the first pneumatic jack 26 is rotatably connected to two isolation door actuation links 27. The two isolation door actuation links 27 are rotatably connected to the pedestrian transport isolation door 3 and the upper isolation door 6 of the belt conveyor, respectively. The two isolation door actuation links 27 are symmetrically arranged along the axis of the first pneumatic jack 26.

[0034] Reference Figure 3 and Figure 4 In the event of a fire, the output end of the first pneumatic jack 26 extends, causing the two isolation door linkages 27 to rotate. The angle between the two isolation door linkages 27 gradually increases, thereby pushing the pedestrian transport isolation door 3 and the upper isolation door 6 of the belt conveyor away from each other. Finally, the end of the pedestrian transport isolation door 3 away from the first pneumatic jack 26 abuts against the isolation door frame 1, and the end of the upper isolation door 6 of the belt conveyor also abuts against the isolation door frame 1, thus achieving the closing action of the pedestrian transport isolation door 3 and the upper isolation door 6 of the belt conveyor.

[0035] Reference Figure 1 and Figure 3 A horizontal plate 4 is rotatably connected to an upper isolation door 5 that matches the belt trough 110 of the belt conveyor 100. A threshold 7 is fixedly provided at the bottom of the isolation door frame 1. A bottom isolation door 8 is rotatably connected to the threshold 7. The space between the bottom trough belt 120 and the threshold 7 is designated as a lower channel, and the cross-sectional area of ​​the bottom isolation door 8 matches that of the lower channel. The space between the floating trough belt and the bottom trough belt 120 is designated as a tank chamber. A middle isolation door 9 is rotatably connected between the vertical plate 2 and the isolation door frame 1. Both ends of the middle isolation door 9 along its length are rotatably connected to the isolation door frame 1 and the vertical plate 2, respectively. This rotatable connection can also be achieved by installing multiple hinges between the vertical plate 2 and the isolation door frame 1. The middle isolation door 9 is located between the upper isolation door 5 and the bottom isolation door 8, and is positioned close to the bottom trough belt 120. The cross-sectional area of ​​the middle isolation door 9 matches that of the tank chamber.

[0036] Reference Figure 1 and Figure 3 The isolation door frame 1 is equipped with a linkage component 13 on both sides along the length direction to control the synchronous closing of the upper isolation door 5, the middle isolation door 9 and the bottom isolation door 8 of the control float. The linkage component 13 includes a second pneumatic jack 14, a first fixed pulley 15, a second fixed pulley 16, a first wire rope 17, a second wire rope 18 and a third wire rope 19. The operator can fix the second pneumatic jack 14 on the frame of the belt conveyor 100.

[0037] Reference Figure 5 and Figure 6A right-angle plate 20 is fixedly connected to the horizontal plate 4. The right-angle plate 20 includes two right-angled blocks that are fixed perpendicularly to each other, one of which is parallel to the horizontal plate 4 and fixed as a single unit. A U-shaped block 21 is fixedly connected to the isolation door 5 above the floating trough. The right-angle plate 20 has positioning holes that fit the U-shaped block 21. The U-shaped block 21 has a U-shaped groove 23. A fourth steel wire rope 24 is fixedly connected to the output end of the second pneumatic jack 14. The fourth steel wire rope 24 is fixedly connected to a support pin 25 that fits the U-shaped groove 23.

[0038] Reference Figure 3 and Figure 5 When the belt conveyor 100 is in operation, the upper isolation door 5, the middle isolation door 9, and the bottom isolation door 8 of the floating trough are all parallel to the length direction of the belt conveyor 100. At this time, the U-shaped block 21 passes through the positioning hole, the support pin 25 passes through the U-shaped groove 23 and abuts against the right-angle plate 20, and the upper isolation door 5 of the floating trough is perpendicular to the horizontal plate 4, thus ensuring that the upper isolation door 5 of the floating trough remains parallel to the length direction of the belt conveyor 100. Furthermore, the fourth wire rope 24 is not in a taut state and will not pull the support pin 25.

[0039] Reference Figure 3 and Figure 5 The first fixed pulley 15 and the second fixed pulley 16 of the linkage component 13 are both fixedly connected to the isolation door frame 1. The second fixed pulley 16 is located directly below the first fixed pulley 15. One end of the first wire rope 17, one end of the second wire rope 18, and one end of the third wire rope 19 are all fixedly connected to the output end of the second pneumatic jack 14. The end of the first wire rope 17 away from the second pneumatic jack 14 is wound around the first fixed pulley 15 and fixedly connected to the isolation door 5 above the floating trough. The end of the second wire rope 18 away from the second pneumatic jack 14 is wound around the first fixed pulley 15 and fixedly connected to the middle isolation door 9. The end of the third wire rope 19 away from the second pneumatic jack 14 is wound around the first fixed pulley 15 and the second fixed pulley 16 in sequence and fixedly connected to the bottom isolation door 8.

[0040] Reference Figure 3 and Figure 5 When the belt conveyor 100 is in operation, the second pneumatic jack 14, together with the second wire rope 18 and the third wire rope 19, keeps the middle isolation door 9 and the bottom isolation door 8 in a taut state. At this time, the middle isolation door 9 and the bottom isolation door 8 are parallel to the length direction of the belt conveyor 100.

[0041] Reference Figure 3 and Figure 6In the event of a fire, the output end of the second pneumatic jack 14 retracts, causing all the steel wire ropes to move. The second pneumatic jack 14 pulls the fourth steel wire rope 24, which in turn pulls the support pin 25 to move away from the horizontal plate 4. After the support pin 25 disengages from the U-shaped groove 23, under the weight of the isolation door 5 above the floating trough, the U-shaped block 21 disengages from the positioning hole, and the isolation door 5 above the floating trough rotates downward around its rotation point with the horizontal plate 4. At the same time, the second pneumatic jack 14 pulls the first steel wire rope 17, ultimately causing both sides of the isolation door 5 above the floating trough to abut against the isolation door frame 1 along its length. At this time, the end of the isolation door 5 above the floating trough away from the horizontal plate 4 is located in the belt floating trough 110 of the belt conveyor 100 and is in contact with the upper surface of the belt.

[0042] Reference Figure 3 and Figure 4 When the output end of the second pneumatic jack 14 retracts and pulls the second wire rope 18 to move, the middle isolation door 9 gradually rotates upward around the point of rotation between itself and the isolation door frame 1 and the upright plate 2, thereby causing the middle isolation door 9 to abut against the isolation door frame 1, thus sealing the cross-section of the tank chamber along the height direction of the isolation door frame 1. When the middle isolation door 9 closes, it will interfere with the frame of the belt conveyor 100. Therefore, slots 91 that cooperate with the frame are provided at both ends of the middle isolation door 9. When the middle isolation door 9 rotates, the frame is locked into the slots 91, ensuring that the cross-section of the tank chamber is sealed when the middle isolation door 9 is closed.

[0043] Reference Figure 3 and Figure 6 When the output end of the second pneumatic jack 14 retracts and pulls the third steel wire rope 19 to move, the bottom isolation door 8 gradually rotates upward around the point of rotation between it and the threshold 7, thereby causing the bottom isolation door 8 to abut against the isolation door frame 1, so that the bottom isolation door 8 blocks the cross section of the lower passage along the height direction of the door frame.

[0044] Reference Figure 1 and Figure 4 In the event of a fire, the first pneumatic jack 26 and the second pneumatic jack 14 are used to close the pedestrian transport isolation door 3, the upper isolation door 6 of the belt conveyor, the upper isolation door 5 of the floating trough, the middle isolation door 9, and the bottom isolation door 8. This achieves complete sealing at the connection point where the belt conveyor 100 passes through the fire door of this application, improving the sealing between the fire door and the belt conveyor 100, preventing flames and toxic gases from passing through the fire door, making fire isolation more thorough, reducing the risk of flame and toxic gas leakage and spread, and helping to protect the personal safety of underground workers and the safety of the coal mine.

[0045] Reference Figure 1 and Figure 4The pedestrian transport isolation door 3, the upper isolation door 6 of the conveyor belt, the upper isolation door 5 of the floating trough, the middle isolation door 9, and the bottom isolation door 8 on the two isolation door frames 1 are all symmetrically arranged along the cross-section between the two isolation door frames 1. The fire doors of this application are double-layered, achieving layered blocking of the spread of fire and toxic gases, resulting in better fire protection. Furthermore, the fire doors are made of cold-rolled steel plates, exhibiting good explosion-proof performance, reducing the damage from blast shock waves, and ensuring high reliability. Key components (such as the isolation door frames 1, the pedestrian transport isolation door 3, the first pneumatic jack 26, and the second pneumatic jack 14) are made of wear-resistant and corrosion-resistant materials, requiring long maintenance cycles and resulting in low maintenance costs.

[0046] Reference Figure 1 and Figure 2 There is a cavity between the two isolation door frames 1. A material conveying pipe 10 is connected to the upper end of each isolation door frame 1. The material conveying pipe 10 is connected to a fire-resistant foam material box assembly 11, which is fixedly installed on the top of the tunnel. The fire-resistant foam material box assembly 11 contains fire-resistant foam material. This fire-resistant foam material has good self-foaming properties, flowability, diffusion, and stacking properties. It can also achieve high-expansion, rapid compaction, and filling. It is non-combustible, non-combustible, and does not shrink after curing. Furthermore, the cured foam does not collapse or decompose under high-temperature fire sources or environments (in this embodiment, the fire-resistant foam material used is Pruit fire-resistant material JTF-II produced by Xuzhou Ji'an Mining Technology Co., Ltd.).

[0047] Reference Figure 1 and Figure 2 The material conveying pipe 10 passes through the corresponding isolation door frame 1 on the side closest to the isolation door frame 1 and is connected to the cavity. Each material conveying pipe 10 is connected to a pneumatic shut-off valve 12. When the fire door is closed, the cavity is in a closed state. By opening the pneumatic shut-off valve 12, the fire-retardant foam material in the fire-retardant foam material box 11 flows through the material conveying pipe 10 and is sprayed into the cavity between the two isolation door frames 1. It expands, foams and solidifies in the cavity, thereby filling and sealing the cavity and forming a flame-retardant isolation zone, which can further suppress the fire.

[0048] Reference Figure 1 and Figure 2The length of the isolation door frame 1 is greater than the width of the conveyor belt 100, allowing the fire-resistant foam material to flow downwards through the gaps between the sides of the conveyor belt 100 and the isolation door frame 1. Simultaneously, the cured fire-resistant foam material improves the seal between the fire door and the conveyor belt 100, further preventing flames and toxic gases from passing through the fire door and reducing the risk of flame and toxic gas leakage and spread. When the cured fire-resistant foam material is combined with the fire-resistant isolation door, it achieves a linkage between fire prevention and fire suppression. This not only demonstrates the physical isolation function of the fire door but also realizes an active fire suppression function, forming a double safety barrier. Once sealed, it prevents the spread of fire and toxic gases to the other side of the fire door. It also increases the explosive impact resistance of the fire-resistant isolation door, further improving safety.

[0049] Reference Figure 1 and Figure 4 Each isolation door frame 1 is equipped with a drain pipe hole 28 and multiple ventilation and drainage pipe holes 29. Each upright plate 2 is equipped with several cable holes 30. The drain pipe holes 28, ventilation and drainage pipe holes 29, and cable holes 30 are all connected to the cavity. When the fire door is open, the drain pipe holes 28, ventilation and drainage pipe holes 29, and cable holes 30 are reserved for pipelines. The drain pipe holes 28 are used for ventilation duct installation, the ventilation and drainage pipe holes 29 are used for drainage pipe installation, and the cable holes 30 are used for underground cable installation.

[0050] Reference Figure 1 and Figure 4 In the event of a fire, gaps may exist in the openings of the isolation door frame 1 and the upright plate 2, potentially leading to the leakage and spread of flames and toxic gases. After the fire-resistant foam material fills and seals the cavities, its own flow and diffusion properties will fill and seal the gaps at the openings, further preventing flames and toxic gases from passing through the fire door, thus improving the fire door's sealing performance and safety.

[0051] Reference Figure 1 and Figure 7 Simultaneously, the first pneumatic jack 26, the second pneumatic jack 14, and the pneumatic shut-off valve 12 in this application can be linked with the underground fire prevention and extinguishing monitoring and early warning system. Using the first pneumatic jack 26 and the second pneumatic jack 14 as the core actuators, in conjunction with the pneumatic shut-off valve 12, it provides advanced early warning and rapid response to fires, enabling rapid closure of fire doors and the dispensing of fire extinguishing materials. The use of fully pneumatic drive eliminates the risk of electrical sparks, meeting the explosion-proof requirements of high-gas coal mines. Furthermore, it allows for the simultaneous storage and use of fire-extinguishing foam materials, increasing the airtightness of fire doors, expanding the coverage area of ​​fire-extinguishing materials, reducing oxygen supply to fire-prone roadways, and ensuring the personal safety of workers and the safety of the coal mine.

[0052] Reference Figure 1 and Figure 7When linked with the fire prevention and extinguishing monitoring and early warning system, the system includes a server equipped with a controller. The controller receives signals and sends control signals. The underground fire sensing system is electrically connected to the server and includes a carbon monoxide sensor, a methane sensor, and a temperature sensor. The carbon monoxide sensor can be a GTH1000 type mining carbon monoxide sensor, the methane sensor can be a KG9001C type high and low concentration methane sensor, and the temperature sensor can be a GWD100 mining temperature sensor.

[0053] Reference Figure 1 and Figure 7 The server is also electrically connected to a pneumatic switch system, which includes pneumatic on / off switches for a first pneumatic jack 26, a second pneumatic jack 14, and a pneumatic shut-off valve 12. When a fire occurs, any sensor in the fire sensing system is activated and transmits the sensing signal to the controller. After receiving the sensing signal, the controller transmits a control signal to the pneumatic switch system. The pneumatic switch system controls the first pneumatic jack 26 and the second pneumatic jack 14 to extend their output ends, completing the closing actions of the pedestrian transport isolation door 3, the upper isolation door 6 of the belt conveyor, the upper isolation door 5 of the floating trough, the middle isolation door 9, and the bottom isolation door 8, achieving complete sealing at the connection section where the belt conveyor 100 passes through the fire door. Then, the pneumatic shut-off valve 12 is opened, and the fire-resistant foam material in the fire-resistant foam material box 11 is sprayed into the cavity between the two isolation door frames 1. It expands, foams and solidifies in the cavity, thereby filling and sealing the cavity, forming a flame-retardant isolation zone, isolating oxygen and completing the closure of the roadway.

[0054] The implementation principle of an automatic fireproof isolation door in a coal mine tunnel according to this application embodiment is as follows: In the event of a fire, the first pneumatic jack 26 and the second pneumatic jack 14 complete the closing actions of the pedestrian transport isolation door 3, the upper isolation door 6 of the belt conveyor, the upper isolation door 5 of the floating chute, the middle isolation door 9, and the bottom isolation door 8. This achieves complete sealing at the connection point where the belt conveyor 100 passes through the fireproof door, improving the sealing between the fireproof door and the belt conveyor 100, preventing flames and toxic gases from passing through the fireproof door, resulting in more thorough fire isolation, reducing the risk of flame and toxic gas leakage and spread, and helping to protect the personal safety of underground workers and the safety of the coal mine. After the fireproof door is closed, by opening the pneumatic shut-off valve 12, the fireproof foam material in the fireproof foam material box 11 flows through the conveying pipe 10 and is sprayed into the cavity between the two isolation door frames 1. The material expands, foams, and solidifies within the cavity, filling and sealing the cavity to form a flame-retardant isolation zone, further suppressing the fire.

[0055] In the description of this application, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0056] In the description of this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0057] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0058] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. An automatic fireproof isolation door for coal mine tunnels, comprising two parallel isolation door frames (1), characterized in that: Each of the isolation door frames (1) is fixedly provided with a vertical plate (2), and a pedestrian transport isolation door (3) is rotatably connected to one side of the vertical plate (2). A horizontal plate (4) is fixedly connected to the side of the vertical plate (2) away from the pedestrian transport isolation door (3). A floating trough isolation door (5) that is compatible with the belt floating trough (110) of the belt conveyor (100) is rotatably connected to the horizontal plate (4). The vertical plate (2) is rotatably connected to the upper isolation door (6) of the belt conveyor on the side away from the pedestrian transport isolation door (3). The upper isolation door (6) of the belt conveyor is located between the horizontal plate (4) and the upper end of the isolation door frame (1). The space between the horizontal plate (4) and the upper end of the isolation door frame (1) is set as the upper passage. The cross-sectional area of ​​the upper isolation door (6) of the belt conveyor is matched with that of the upper passage. The bottom of the isolation door frame (1) is fixed with a threshold (7), and the threshold (7) is rotatably connected to the bottom isolation door (8). The space between the bottom groove tape (120) and the threshold (7) is set as the lower channel, and the cross-sectional area of ​​the bottom isolation door (8) is matched with that of the lower channel. The space between the floating trough tape and the bottom trough tape (120) is set as a trough chamber, and a central isolation door (9) that matches the cross-sectional area of ​​the trough chamber is rotatably connected between the upright plate (2) and the isolation door frame (1).

2. The automatic fireproof isolation door for coal mine tunnels according to claim 1, characterized in that: There is a cavity between the two isolation door frames (1). Each isolation door frame (1) is connected to a material conveying pipe (10). The material conveying pipe (10) is connected to a fire-resistant foaming material box group (11). The side of the material conveying pipe (10) closest to the isolation door frame (1) is connected to the cavity through the corresponding isolation door frame (1).

3. The automatic fireproof isolation door for coal mine tunnels according to claim 2, characterized in that: All conveying pipes (10) are connected to pneumatic shut-off valves (12).

4. The automatic fireproof isolation door for coal mine tunnels according to claim 1, characterized in that: Both sides of the isolation door frame (1) are equipped with linkage components (13) for the synchronous closing of the upper isolation door (5), middle isolation door (9), and bottom isolation door (8) of the control float. The linkage components (13) include a second pneumatic jack (14), a first fixed pulley (15), a second fixed pulley (16), a first steel wire rope (17), a second steel wire rope (18), and a third steel wire rope (19). The first fixed pulley (15) and the second fixed pulley (16) are fixedly connected to the isolation door frame (1). One end of each of the first wire rope (17), the second wire rope (18), and the third wire rope (19) is fixedly connected to the output end of the second pneumatic jack (14). The first wire rope (17) is wound around the first fixed pulley (15) and fixedly connected to the isolation door (5) above the floating trough. The second wire rope (18) is wound around the first fixed pulley (15) and fixedly connected to the middle isolation door (9). The third wire rope (19) is wound around the first fixed pulley (15) and the second fixed pulley (16) in sequence and fixedly connected to the bottom isolation door (8).

5. The automatic fireproof isolation door for coal mine tunnels according to claim 4, characterized in that: The horizontal plate (4) is fixedly connected to a right-angle plate (20), the isolation door (5) above the floating trough is fixedly connected to a U-shaped block (21), the right-angle plate (20) has a positioning hole that matches the U-shaped block (21), the U-shaped block (21) has a U-shaped groove (23), the output end of the second pneumatic jack (14) is fixedly connected to a fourth steel wire rope (24), and the fourth steel wire rope (24) is fixedly connected to a support pin (25) that matches the U-shaped groove (23).

6. The automatic fireproof isolation door for coal mine tunnels according to claim 1, characterized in that: A first pneumatic jack (26) is provided between the pedestrian transport isolation door (3) and the upper isolation door (6) of the belt conveyor on the same side. The output end of the first pneumatic jack (26) is rotatably connected to two isolation door action linkages (27). The two isolation door action linkages (27) are rotatably connected to the pedestrian transport isolation door (3) and the upper isolation door (6) of the belt conveyor, respectively.

7. The automatic fireproof isolation door for coal mine tunnels according to claim 1, characterized in that: The isolation door frame (1) is provided with a drain pipe hole (28) and a number of ventilation and drainage pipe holes (29), and the upright plate (2) is provided with a number of cable holes (30). The drain pipe hole (28), ventilation and drainage pipe holes (29) and cable holes (30) are all connected to the cavity.

Images