A coal mine underground fire break device

Abstract

The application belongs to the technical field of mining equipment, and discloses a coal mine underground fire partition device, which comprises a sealing plate, the sealing plate is vertically placed in a semicircular plate shape, a sliding groove shaft is fixed to the lower end horizontal plane of the sealing plate, the center axis of the sliding groove shaft is vertically placed with the center axis of the circle where the sealing plate is located, a pair of symmetrically placed firewalls are slidably connected to the lower end of the sliding groove shaft, and the firewalls can slide along the axis direction of the sliding groove shaft; the fire partition is divided into first-stage fire prevention and second-stage fire prevention; the first-stage fire prevention prevents the spread of fire through a first fire curtain, and facilitates the timely evacuation of personnel after the first fire curtain is opened; after the staff in the mine are completely evacuated, the two fire doors are closed for the second-stage fire prevention process, the spread of fire is completely isolated, and the explosion shock wave generated by the fire can be blocked; the drawbacks of the prior art are solved, the difficulty in opening the fire door after the fire door is closed is avoided, and the purpose of facilitating the escape of personnel in the mine is achieved.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of mining equipment, and particularly relates to a coal mine underground fire partition device. BACKGROUND

[0002] Fire is one of the main disasters in the production process of a mine, and once a fire occurs in a mine, great loss will be caused; however, the existing mine fireproof partition has certain defects, such as a patent: a mine fireproof partition device (patent number: CN209761496U), which improves and optimizes the structure of a fireproof door, so that the fireproof door is suitable for the inside of a mine and can effectively prevent and partition the mine when a fire occurs in the mine.

[0003] However, when the fireproof door is directly closed, if there are personnel who have not been evacuated in time in the mine channel, the fireproof door body will be high-temperature due to high-temperature drying, and the fireproof door will easily expand and deform due to high temperature, so that the personnel who have not been evacuated in time cannot open the fireproof door when they are in front of the fireproof door. Therefore, the existing mine fire partition device has the problems that the single fireproof door structure is easy to cause opening and closing difficulties after being closed, and thus it is not convenient for personnel who have not been evacuated in time in the mine to escape. SUMMARY

[0004] In view of the defects of the prior art, the purpose of the present application is to provide a coal mine underground fire partition device, which solves the problems that the single fireproof door structure is easy to cause opening and closing difficulties after being closed in the prior art, and thus it is not convenient for personnel who have not been evacuated in time in the mine to escape.

[0005] The purpose of the present application can be achieved by the following technical solutions.

[0006] The coal mine underground fire partition device comprises a sealing plate, the sealing plate is vertically placed in a semicircular plate shape, a sliding groove shaft is fixed to the lower end horizontal plane of the sealing plate, and the center axis of the sliding groove shaft is vertically placed with the center axis of the circle where the sealing plate is located, a pair of symmetrically placed firewalls are slidingly connected to the lower end of the sliding groove shaft.

[0007] A curtain storage box is arranged at the upper end position of one side of the firewall, the curtain storage box is fixed to the sliding groove shaft, the curtain storage box is in a shell shape with an open upper end, a first rotating roller is rotatably connected in the curtain storage box, the first rotating roller is coaxially placed with the sliding groove shaft, a first fireproof curtain is fixed to the peripheral wall of the first rotating roller, the two firewalls are in a mutually far-apart state in the initial state, the first fireproof curtain is wound on the first rotating roller, and the width of the first fireproof curtain is greater than the distance between the two firewalls.

[0008] The fireproof wall is internally hollow and is in the shape of a shell, and a rectangular slot is formed on each side of the fireproof wall that faces each other, a first sliding slot is formed on the upper end surface of the fireproof wall, the first sliding slot is coaxially arranged with the first rotating roller, the first sliding slot penetrates through the side of the fireproof wall that faces each other, the first fireproof curtain passes through the first sliding slot and slides relative to the first sliding slot, the length of the first sliding slot is greater than one half of the width of the first fireproof curtain, a counterweight roller is fixed to the free end of the first fireproof curtain, the counterweight roller is coaxially arranged with the first rotating roller, the length of the counterweight roller is equal to the width of the first fireproof curtain, and the two ends of the counterweight roller are located inside the two fireproof walls and are slidingly connected with the inner side walls of the fireproof walls.

[0009] A second rotating roller is arranged, the second rotating roller is rotationally connected in the curtain storage box, the second rotating roller is coaxially arranged with the first rotating roller and is located at the same height position, the second rotating roller is located on the side of the first rotating roller away from the sealing plate, the second rotating roller is connected with the second fireproof curtain on the peripheral wall of the second rotating roller, the second fireproof curtain is of the same specification as the first fireproof curtain, a partition plate is arranged in the fireproof wall and is vertically arranged, the partition plate is parallelly arranged with the fireproof wall, the first fireproof curtain and the second fireproof curtain pass through the first sliding slot, and the first fireproof curtain and the second fireproof curtain are located on the two sides of the partition plate, respectively, the counterweight roller is provided in two, the two counterweight rollers are located on the two sides of the partition plate, respectively, any counterweight roller is fixed to the free end of the first fireproof curtain, and the other counterweight roller is fixed to the free end of the second fireproof curtain.

[0010] The curtain storage box is internally provided with water.

[0011] A notch slot is formed on the side wall of the curtain storage box close to the sealing plate, a pair of upper and lower symmetrical rotating rods are arranged above the notch slot, the rotating rods are coaxially arranged with the first rotating roller, the two ends of the rotating rods are fixed to the side wall of the curtain storage box, a guide rod is fixedly arranged in the curtain storage box, and the guide rod is located obliquely below the side of the first rotating roller close to the sealing plate.

[0012] The arrangement path of the first fireproof curtain is that the first fireproof curtain is fixed to one end of the first rotating roller, the free end of the first fireproof curtain is pulled out upwards between the first rotating roller and the second rotating roller, the free end of the first fireproof curtain is pulled out downwards after passing through the upper end of the rotating rod located above and then enters the fireproof wall through the first sliding slot.

[0013] The arrangement path of the second fireproof curtain is that the second fireproof curtain is fixed to one end of the second rotating roller, the free end of the second fireproof curtain is pulled out downwards on the side of the second rotating roller away from the first rotating roller, the free end of the second fireproof curtain passes below the guide rod, the free end of the second fireproof curtain is pulled out between the two rotating rods located above and below symmetrically and then enters the fireproof wall through the first sliding slot.

[0014] The first roller is fixedly sleeved with a first gear coaxially arranged at one end, and the second roller is fixedly sleeved with a second gear coaxially arranged at the end away from the first gear, the first gear and the second gear are of the same specification, a rotating shaft is arranged, the rotating shaft is coaxially arranged with the first roller, the central axis of the rotating shaft is located in the symmetry plane of the first roller and the second roller, the height of the rotating shaft is higher than that of the first roller, the rotating shaft is movable along the axis direction of the rotating shaft in the curtain storage box, the rotating shaft is fixedly sleeved with a third gear coaxially arranged at both ends, the first gear and the second gear are both meshed with the third gear, the thicknesses of the first gear, the second gear and the third gear are equal, and when the first gear is completely meshed with the third gear at the corresponding end, the other third gear is completely separated from the second gear.

[0015] The first double-shaft rotating motor is coaxially arranged with the rotating shaft, the rotating shaft is divided into two symmetrically arranged sections, the two sections of the rotating shaft are connected with the output ends of the first double-shaft rotating motor at the ends away from the third gears, the mounting block is fixed on the peripheral wall of the first double-shaft rotating motor, the hanging plate is fixed on the side of the mounting block away from the sealing plate, the second sliding groove is formed in the side wall of the curtain storage box away from the sealing plate, the second sliding groove is coaxially arranged with the first roller, the other end of the hanging plate is slidingly connected with the second sliding groove, the telescopic cylinder is fixedly installed on the inner side wall of the curtain storage box close to the second sliding groove, the telescopic cylinder is coaxially arranged with the second sliding groove, the connecting piece is fixed to the telescopic rod of the telescopic cylinder, and the other end of the connecting piece is fixed with the hanging plate.

[0016] The water tank is fixedly connected to the side of the sealing plate away from the curtain storage box, the plurality of nozzles are installed on the side of the sealing plate close to the curtain storage box, the water pump is arranged in the water tank, and the nozzles are all connected with the water pump through the guide pipes.

[0017] The second double-shaft rotating motor is coaxially arranged in the sliding groove shaft, the output ends of the second double-shaft rotating motor are provided with threaded rods, the threaded directions of the threaded rods at the two ends are opposite, the sliding blocks are threadedly connected with the threaded rods, the sliding blocks are slidingly connected with the sliding groove shaft, the sliding blocks are in one-to-one correspondence with the firewalls, and the lower ends of the sliding blocks are fixed with the upper ends of the firewalls.

[0018] The multi-stage telescopic bin is fixedly installed at the lower end of the sliding groove shaft, the multi-stage telescopic bin is located on the side of the sealing plate away from the curtain storage box, the two ends of the multi-stage telescopic bin are in an open state, and a pair of symmetrically arranged switch doors are rotationally hinged to the openings on the side of the multi-stage telescopic bin away from the firewalls.

[0019] The beneficial effects of the present application are as follows:

[0020] 1. The application is divided into first grade fire prevention and second grade fire prevention by the cooperation of sealing plate, sliding groove shaft, fireproof wall, curtain storage box, first rotating roller and first fireproof curtain; the first grade fire prevention prevents the spread of fire through the first fireproof curtain; when the staff in the mine moves to the device, the first fireproof curtain can be opened to evacuate from between the two fireproof walls; after the staff in the mine is completely evacuated, the two fireproof walls can be moved to close and perform the second grade fire prevention process, completely preventing the spread of fire and blocking the explosion shock wave caused by fire; the drawbacks of the single fireproof door fireproofing device in the prior art are solved, the difficulty of opening and closing the fireproof door after closing is avoided, and the purpose of facilitating the escape of personnel who have not timely evacuated in the mine is achieved.

[0021] 2. The first fireproof curtain or the second fireproof curtain can be prevented from floating due to air flow by the cooperation of the fireproof wall, the first sliding groove, the rectangular groove and the counterweight roller.

[0022] 3. The first fireproof curtain and the second fireproof curtain can be alternately used for fireproofing work by the cooperation of the curtain storage box, the first rotating roller, the first fireproof curtain, the second rotating roller and the second fireproof curtain, the self-ignition of any fireproof curtain due to long-time baking is avoided, and the first fireproof curtain or the second fireproof curtain is cooled by water in the curtain storage box and the rolling of the first fireproof curtain or the second fireproof curtain.

[0023] 4. The first fireproof curtain and the second fireproof curtain are alternately operated by the cooperation of the first gear, the second gear, the rotating shaft, the third gear, the first double-shaft rotating motor, the mounting block, the hanging plate and the telescopic cylinder, and any rolled fireproof curtain is locked to avoid natural falling. BRIEF DESCRIPTION OF DRAWINGS

[0024] In order to more clearly illustrate the technical solutions in the embodiments of the application or the prior art, the drawings needed in the following embodiment or prior art description will be briefly introduced. Obviously, other drawings can be obtained by those skilled in the art without creative labor.

[0025] Figure 1 is a schematic diagram of the overall structure of the application;

[0026] Figure 2 is a schematic diagram of the part structure at the sealing plate of the application;

[0027] Figure 3 is a schematic diagram of the part structure at the threaded rod of the application;

[0028] Figure 4 is a schematic diagram of the part structure at the first fireproof curtain and the second fireproof curtain of the application;

[0029] Figure 5 This is a partial structural diagram of the storage box of the present invention;

[0030] Figure 6 This is a schematic diagram of the internal structure of the storage curtain box of the present invention;

[0031] Figure 7 This is a schematic diagram of the internal structure of the firewall of the present invention. Detailed Implementation

[0032] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0033] like Figures 1 to 7 As shown, a fire isolation device for underground coal mines includes a sealing plate 1, which is a vertically placed semi-circular plate. A sliding shaft 2 is fixed to the horizontal plane at the lower end of the sealing plate 1, and the central axis of the sliding shaft 2 is perpendicular to the central axis of the circle in which the sealing plate 1 is located. A pair of symmetrically placed firewalls 3 are slidably engaged at the lower end of the sliding shaft 2, and both firewalls 3 can slide along the axial direction of the sliding shaft 2.

[0034] A storage box 4 is provided at the upper end of one side of the firewall 3. The storage box 4 is fixed to the slide shaft 2. The storage box 4 is a shell shape with an open top. A first rotating roller 5 is rotatably connected inside the storage box 4. The first rotating roller 5 is placed in the same direction as the slide shaft 2. A first fireproof curtain 6 is fixed on the periphery of the first rotating roller 5. In the initial state, the two firewalls 3 are in a state of being far apart from each other. The first fireproof curtain 6 is rolled up on the first rotating roller 5. The width of the first fireproof curtain 6 is greater than the distance between the two firewalls 3.

[0035] During installation, the sealing plate 1 is fixedly connected to the inner wall of the mine passage, so that the upper peripheral wall of the sealing plate 1 fits and is fixed to the upper arched inner wall of the mine passage. The two ends of the sliding shaft 2 are fixed to the side walls of the mine passage, and sliding grooves are provided on the side walls of the mine passage. The firewall 3 can be inserted into the sliding groove and slidably engaged with the sliding groove.

[0036] When the fire occurs in the mine, the first fireproof curtain 6 free end can be pulled first, the first fireproof curtain 6 free end wound on the first rotating roller 5 falls on the ground, and the opening of the two firewalls 3 is kept, the above process is the first stage of the fireproof process of the device; the spread of the fire is blocked by the first fireproof curtain 6, at this time, when the staff in the mine moves to the device, the first fireproof curtain 6 is opened and the staff is evacuated from between the two firewalls 3; in the first stage of the fireproof process, the spread of the fire is blocked when the fire occurs, and the staff who does not evacuate in time can pass through;

[0037] After the staff in the mine is completely evacuated, the two firewalls 3 can be moved to approach each other, so that the two firewalls 3 are attached and kept closed, the second stage of the fireproof process of the device is carried out, the spread of the fire is completely blocked, and the explosion shock wave generated by the fire can be blocked;

[0038] Through the above process, the disadvantages existing in the fire blocking device of the single fire door in the prior art are solved, and the problem that it is not convenient for the staff in the mine who does not evacuate in time to escape due to the difficulty in opening and closing the fire door after the fire door is closed is avoided.

[0039] In order to ensure that the first fireproof curtain 6 is attached to the firewall 3 and avoid that the first fireproof curtain 6 is floating due to air flow, the firewalls 3 are hollow shells, and the side surfaces of the firewalls 3 approaching each other are provided with rectangular grooves 31, the upper end surfaces of the firewalls 3 are provided with first sliding grooves 32, the first sliding grooves 32 are coaxially arranged with the first rotating roller 5, the first sliding grooves 32 penetrate the side surfaces of the firewalls 3 approaching each other, the first fireproof curtain 6 passes through the first sliding grooves 32 and slides relative to the first sliding grooves 32, the length of the first sliding groove 32 is greater than one half of the width of the first fireproof curtain 6, the free ends of the first fireproof curtain 6 are fixed with counterweight rollers 7, the counterweight rollers 7 are coaxially arranged with the first rotating roller 5, the length of the counterweight roller 7 is equal to the width of the first fireproof curtain 6, and the two ends of the counterweight roller 7 are located in the interiors of the two firewalls 3 and are slidably connected with the inner walls of the firewalls 3;

[0040] Through the arrangement of the counterweight roller 7, after the free end of the first fireproof curtain 6 is placed from the first rotating roller 5, the counterweight roller 7 is lowered along the interior of the firewall 3 to pull down the first fireproof curtain 6, and through the cooperation of the counterweight roller 7 and the firewall 3, the floating of the first fireproof curtain 6 due to air flow is avoided.

[0041] If the staff who does not evacuate in time is far away from the device in the mine, the first fireproof curtain 6 is easily damaged or self-ignited after continuous baking at high temperature;

[0042] In order to avoid long time continuous work of the first fireproof curtain 6, and at the same time not to affect the first stage fireproof process of the device, the second rotating roller 8 is arranged, which is rotationally connected in the curtain storage box 4, and is coaxially arranged with the first rotating roller 5 and is located at the same height position. The second rotating roller 8 is located on the side of the first rotating roller 5 away from the sealing plate 1. The second rotating roller 8 is connected with the second fireproof curtain 9 on the wall thereof. The second fireproof curtain 9 is consistent with the first fireproof curtain 6 in specification. The fireproof wall 3 is provided with the vertical downwardly arranged partition plate 33, which is parallelly arranged with the fireproof wall 3. The first fireproof curtain 6 and the second fireproof curtain 9 pass through the first sliding groove 32, and are respectively located on the two sides of the partition plate 33. The counterweight roller 7 is provided with two, which are respectively located on the two sides of the partition plate 33. Any counterweight roller 7 is fixed with the free end of the first fireproof curtain 6, and the other counterweight roller 7 is fixed with the free end of the second fireproof curtain 9.

[0043] The curtain storage box 4 is internally provided with water.

[0044] In the initial state, the first fireproof curtain 6 and the second fireproof curtain 9 are respectively wound on the first rotating roller 5 and the second rotating roller 8. In the fireproof partition work, the first fireproof curtain 6 is first vertically lowered to perform the fireproof partition. After the first fireproof curtain 6 works for a period of time, the second fireproof curtain 9 is vertically lowered. After the second fireproof curtain 9 is completely lowered, the first rotating roller 5 is rotated to wind the first fireproof curtain 6. When winding, the first fireproof curtain 6 is continuously in contact with the water in the curtain storage box 4, so as to cool the first fireproof curtain 6 through the wetting of the water. After the second fireproof curtain 9 works for a period of time, the first fireproof curtain 6 is lowered, and the second fireproof curtain 9 is wound. The above steps are repeatedly alternated, so as to avoid the first fireproof curtain 6 or the second fireproof curtain 9 from being self-ignited due to continuous baking.

[0045] In order to realize that the first fireproof curtain 6 and the second fireproof curtain 9 do not interfere with each other when being wound or vertically lowered, a notch groove is formed on the side wall of the curtain storage box 4 close to the sealing plate 1. A pair of upper and lower symmetrical rotating rods 10 are arranged above the notch groove. The rotating rods 10 are coaxially arranged with the first rotating roller 5. The two ends of the rotating rods 10 are fixed with the side wall of the curtain storage box 4. The curtain storage box 4 is internally provided with the fixedly connected guide rod 11, which is located obliquely downward on the side of the first rotating roller 5 close to the sealing plate 1.

[0046] The arrangement path of the first fireproof curtain 6 is as follows: after one end of the first fireproof curtain 6 is fixed with the wall of the first rotating roller 5, the free end of the first fireproof curtain 6 is pulled out upward between the first rotating roller 5 and the second rotating roller 8, and then the free end of the first fireproof curtain 6 is pulled out downward through the upper end of the rotating rod 10 located above, and then enters the fireproof wall 3 through the first sliding groove 32.

[0047] The arrangement path of the second fireproof curtain 9 is as follows: after one end of the second fireproof curtain 9 is fixed with the peripheral wall of the second rotating roller 8, the free end of the second fireproof curtain 9 is pulled downward from the side of the second rotating roller 8 away from the first rotating roller 5, then the free end of the second fireproof curtain 9 is pulled out between the two rotating rods 10 placed symmetrically above and below and then is pulled into the fireproof wall 3 through the first sliding groove 32.

[0048] The first fireproof curtain 6 and the second fireproof curtain 9 can be guaranteed to be deployed, and meanwhile, the first fireproof curtain 6 and the second fireproof curtain 9 do not interfere with each other when being rolled up or falling.

[0049] In order to facilitate the control of the alternating work of the first fireproof curtain 6 and the second fireproof curtain 9, and meanwhile, to keep any fireproof curtain from being locked when being rolled up and to avoid natural falling, a first gear 12 coaxially placed is fixed on one end of the first rotating roller 5, a second gear 13 coaxially placed is fixed on the end of the second rotating roller 8 away from the first gear 12, the first gear 12 and the second gear 13 are of the same specification, a rotating shaft 14 is arranged, the rotating shaft 14 is coaxially placed with the first rotating roller 5, the central axis of the rotating shaft 14 is located in the symmetry plane of the first rotating roller 5 and the second rotating roller 8, and the height of the rotating shaft 14 is higher than that of the first rotating roller 5, the rotating shaft 14 can move along the axis direction of the rotating shaft 14 in the curtain storage box 4, the third gear 15 coaxially placed is fixed on both ends of the rotating shaft 14, the first gear 12 and the second gear 13 can be connected with the third gear 15, the thicknesses of the first gear 12, the second gear 13 and the third gear 15 are equal, and when the first gear 12 is completely connected with the third gear 15 at the corresponding end, the other third gear 15 is completely separated from the second gear 13.

[0050] In the initial state, the first fireproof curtain 6 and the second fireproof curtain 9 are in the winding state, and the third gear 15 at one end is connected with the first gear 12 through the partial thickness tooth surface, and the third gear 15 at the other end is also connected with the second gear 13 through the partial thickness tooth surface; in the working state, the rotating shaft 14 is first moved, the rotating shaft 14 drives the third gear 15, the first gear 12 is separated from the third gear 15, at this time, the first gear 12 loses the locking of the third gear 15, under the action of the gravity of the counterweight roller 7, the counterweight roller 7 pulls the first fireproof curtain 6 and drives the first rotating roller 5 to rotate and move, so that the first fireproof curtain 6 is lowered; after the first fireproof curtain 6 works for a period of time, the rotating shaft 14 is moved to the first gear 12 end, the second gear 13 is separated from the corresponding third gear 15, then the first gear 12 is connected with the corresponding third gear 15, after the second gear 13 loses the locking of the third gear 15, the counterweight roller 7 pulls the second fireproof curtain 9 to lower, then the rotating shaft 14 is rotated, the rotating shaft 14 drives the third gear 15, the third gear 15 drives the first gear 12, the first gear 12 drives the first rotating roller 5, the first rotating roller 5 rotates and winds the first fireproof curtain 6, and after winding, the first fireproof curtain 6 will not be unwound and lowered due to the connection between the third gear 15 and the first gear 12; after the second fireproof curtain 9 works for a period of time, the first fireproof curtain 6 is lowered and the second fireproof curtain 9 is wound by the above process, so that the first fireproof curtain 6 and the second fireproof curtain 9 are alternately controlled to work, and any fireproof curtain after winding is locked to avoid natural falling.

[0051] In order to automatically control the rotation or movement of the rotating shaft 14, the first double-shaft rotating motor 16 is arranged, the first double-shaft rotating motor 16 is coaxial with the rotating shaft 14, the rotating shaft 14 is divided into two symmetrical parts, the two parts of the rotating shaft 14 are connected with the output end of the first double-shaft rotating motor 16 at the end away from the third gear 15, the first double-shaft rotating motor 16 is fixed with a mounting block on the peripheral wall, the mounting block is fixed with a hanging plate 17 on the side away from the sealing plate 1, the second sliding groove 41 is arranged on the side wall of the storage box 4 away from the sealing plate 1, the second sliding groove 41 is coaxial with the first rotating roller 5, the other end of the hanging plate 17 is slidably connected with the second sliding groove 41, the telescopic cylinder 18 is fixedly arranged on the inner side wall of the storage box 4 close to the second sliding groove 41, the telescopic cylinder 18 is coaxial with the second sliding groove 41, the telescopic rod of the telescopic cylinder 18 is fixed with a connecting piece, and the other end of the connecting piece is fixed with the hanging plate 17; the first double-shaft rotating motor 16 and the rotating shaft 14 are stably supported through the mounting block and the hanging plate 17, the rotation of the rotating shaft 14 is automatically controlled through the first double-shaft rotating motor 16, and the movement of the rotating shaft 14 is controlled through the telescopic cylinder 18.

[0052] Preferably, the first double-shaft rotating motor 16 and the telescopic cylinder 18 are fixed with waterproof sealing shells.

[0053] In order to replenish the water in the curtain storage box 4 in time, and improve the fireproof partition effect, the sealing plate 1 is fixedly connected with a water tank 19 away from the curtain storage box 4, a plurality of nozzles 20 are installed on the side of the sealing plate 1 close to the curtain storage box 4, a water pump is arranged in the water tank 19, and the nozzles 20 are all connected with the water pump through conduits.

[0054] In order to facilitate the automatic movement of the fireproof wall 3, a second double-shaft rotating motor 21 is arranged in the sliding groove shaft 2 coaxially, threaded rods 22 are arranged at the output ends of the second double-shaft rotating motor 21, the threaded rods 22 are opposite at both ends, the sliding blocks 23 are threadedly connected with the threaded rods 22, the sliding blocks 23 are slidably connected with the sliding groove shaft 2, the sliding blocks 23 correspond to the fireproof walls 3 one by one, and the lower ends of the sliding blocks 23 are fixedly connected with the upper ends of the fireproof walls 3. The threaded rods 22 are controlled to rotate by starting the second double-shaft rotating motor 21, the threaded rods 22 are threadedly engaged with the sliding blocks 23 to drive the sliding blocks 23 to rotate, and the two fireproof walls 3 are synchronously moved by the sliding blocks 23, so that the automatic movement of the fireproof wall 3 is facilitated.

[0055] When a fire explosion occurs, the mine is prone to collapse, in order to protect the personnel who have not evacuated in time, a multi-stage telescopic bin 24 is fixedly arranged at the lower end of the sliding groove shaft 2, the multi-stage telescopic bin 24 is located away from the side of the sealing plate 1 close to the curtain storage box 4, the two ends of the multi-stage telescopic bin 24 are in an open state, and a pair of symmetrical switch doors 241 are rotatably connected to the openings away from the fireproof wall 3. The personnel who have not evacuated in time can enter the multi-stage telescopic bin 24, and the switch doors 241 and the fireproof wall 3 are closed, so that the harm caused by the collapse of the mine is reduced.

[0056] In the description of the present specification, the description of the terms "one embodiment", "example", "specific example" and the like means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are contained in at least one embodiment or example of the present application. In the present specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0057] The basic principles, main features and advantages of the present application are shown and described above. It should be understood by those skilled in the art that the present application is not limited to the above embodiments, and the above embodiments and descriptions in the specification are only illustrative of the principles of the present application. Without departing from the spirit and scope of the present application, various changes and improvements can be made to the present application, and these changes and improvements all fall within the scope of the present application.

Claims

1. A fire isolation device for underground coal mines, comprising a sealing plate (1), characterized in that, The sealing plate (1) is a vertically placed semi-circular plate. The lower end of the sealing plate (1) is fixed with a sliding shaft (2) on a horizontal plane. The central axis of the sliding shaft (2) is perpendicular to the central axis of the circle where the sealing plate (1) is located. A pair of symmetrical firewalls (3) are slidably engaged at the lower end of the sliding shaft (2). Both firewalls (3) can slide along the axis of the sliding shaft (2). A storage box (4) is provided at the upper end of one side of the firewall (3). The storage box (4) is fixed to the slide shaft (2). The storage box (4) is a shell with an open top. A first rotating roller (5) is rotatably connected inside the storage box (4). The first rotating roller (5) is placed in the same direction as the slide shaft (2). A first fireproof curtain (6) is fixed on the periphery of the first rotating roller (5). In the initial state, the two firewalls (3) are far apart from each other. The first fireproof curtain (6) is rolled up on the first rotating roller (5). The width of the first fireproof curtain (6) is greater than the distance between the two firewalls (3). Firewall (3) is designed as a hollow shell, and rectangular grooves (31) are opened on the side of the firewall (3) that are close to each other. A first sliding groove (32) is opened on the upper surface of the firewall (3). The first sliding groove (32) and the first rotating roller (5) are placed in the same direction. The first sliding groove (32) passes through the side of the firewall (3) that are close to each other. The first fire curtain (6) passes through the first sliding groove (32) and slides relative to the first sliding groove (32). The length of the first sliding groove (32) is greater than half the width of the first fire curtain (6). The free end of the first fire curtain (6) is fixed with a counterweight roller (7). The counterweight roller (7) and the first rotating roller (5) are placed in the same direction. The length of the counterweight roller (7) is equal to the width of the first fire curtain (6). The two ends of the counterweight roller (7) are located inside the firewall (3) on both sides and slide and engage with the inner wall of the firewall (3). A second rotating roller (8) is provided, which is rotatably connected to the storage box (4). The second rotating roller (8) and the first rotating roller (5) are placed coaxially and at the same height. The second rotating roller (8) is located on the side of the first rotating roller (5) away from the sealing plate (1). A second fireproof curtain (9) is connected to the periphery of the second rotating roller (8). The second fireproof curtain (9) is the same size as the first fireproof curtain (6). Vertically lowered partitions (33) are provided inside the firewall (3). The plate (33) and the firewall (3) are placed in parallel. The first fire curtain (6) and the second fire curtain (9) both pass through the first slide groove (32). The first fire curtain (6) and the second fire curtain (9) are located on both sides of the partition (33). There are two counterweight rollers (7). The two counterweight rollers (7) are located on both sides of the partition (33). One counterweight roller (7) is fixed to the free end of the first fire curtain (6), and the other counterweight roller (7) is fixed to the free end of the second fire curtain (9). The storage box (4) is filled with water; One end of the first roller (5) is fixedly fitted with a first gear (12) placed coaxially. The end of the second roller (8) away from the first gear (12) is fixedly fitted with a second gear (13) placed coaxially. The first gear (12) and the second gear (13) are of the same specifications and are provided with a rotating shaft (14). The rotating shaft (14) is placed coaxially with the first roller (5). The central axis of the rotating shaft (14) is located in the plane of symmetry between the first roller (5) and the second roller (8), and the height of the rotating shaft (14) is higher than that of the first roller (5). 4) The storage box (4) can move along the axis of the rotating shaft (14). Both ends of the rotating shaft (14) are fixedly fitted with a third gear (15) placed on the same axis. The first gear (12) and the second gear (13) can be meshed with the third gear (15). The thickness of the first gear (12), the second gear (13) and the third gear (15) are all equal. When the first gear (12) is fully meshed with the third gear (15) at its corresponding end, the other third gear (15) is just completely separated from the second gear (13).

2. The underground fire isolation device for coal mines according to claim 1, characterized in that, A notch is provided on the side wall of the storage box (4) near the sealing plate (1). A pair of rotating rods (10) are placed symmetrically above the notch. The rotating rods (10) are placed in the same direction as the first rotating roller (5). Both ends of the rotating rods (10) are fixed to the side wall of the storage box (4). A guide rod (11) is fixedly connected inside the storage box (4). The guide rod (11) is located diagonally below the first rotating roller (5) near the sealing plate (1). The arrangement path of the first fire curtain (6) is as follows: after one end of the first fire curtain (6) is fixed to the periphery of the first rotating roller (5), the free end of the first fire curtain (6) is pulled upward between the first rotating roller (5) and the second rotating roller (8), and then the free end of the first fire curtain (6) is pulled downward through the upper end of the rotating rod (10) located above and enters the firewall (3) through the first sliding groove (32); The arrangement path of the second fire curtain (9) is as follows: after one end of the second fire curtain (9) is fixed to the periphery of the second rotating roller (8), the free end of the second fire curtain (9) is pulled down through the second rotating roller (8) away from the side of the first rotating roller (5), and after the free end of the second fire curtain (9) passes under the guide rod (11), the free end of the second fire curtain (9) is pulled out between the two rotating rods (10) placed symmetrically above and below and passes through the first sliding groove (32) into the firewall (3).

3. A fire isolation device for underground coal mines according to claim 1, characterized in that, A first dual-axis rotating motor (16) is provided, which is placed coaxially with the rotating shaft (14). The rotating shaft (14) is divided into two symmetrically placed sections. The ends of the two sections of the rotating shaft (14) away from the third gear (15) are connected to the output end of the first dual-axis rotating motor (16). A mounting block is fixed on the peripheral wall of the first dual-axis rotating motor (16). A hanging plate (17) is fixed on the side of the mounting block away from the sealing plate (1). The storage box (4) is away from the sealing plate (1). A second sliding groove (41) is provided on one side wall. The second sliding groove (41) is placed in the same direction as the first rotating roller (5). The other end of the hanging plate (17) is slidably engaged with the second sliding groove (41). A telescopic cylinder (18) is fixedly installed on the inner side wall of the storage box (4) near the second sliding groove (41). The telescopic cylinder (18) is placed in the same direction as the second sliding groove (41). The telescopic rod of the telescopic cylinder (18) is fixed with a connector. The other end of the connector is fixed to the hanging plate (17).

4. A coal mine underground fire isolation device according to claim 1, characterized in that, A water tank (19) is fixedly connected to the side of the sealing plate (1) away from the storage box (4). Multiple nozzles (20) are installed on the side of the sealing plate (1) near the storage box (4). A water pump is installed inside the water tank (19). All nozzles (20) are connected to the water pump by raising the conduit.

5. A fire isolation device for underground coal mines according to claim 1, characterized in that, A second dual-axis rotating motor (21) is installed in the slide shaft (2) and placed on the same axis. The output end of the second dual-axis rotating motor (21) is provided with a threaded rod (22), and the threaded rods (22) at both ends are opposite in direction. The threaded rods (22) are threadedly connected to sliders (23). The sliders (23) are slidably engaged with the slide shaft (2). The sliders (23) correspond one-to-one with the firewall (3). The lower end of the slider (23) is fixed to the upper end of the firewall (3).

6. A fire isolation device for underground coal mines according to claim 1, characterized in that, The lower end of the slide shaft (2) is fixedly installed with a multi-stage telescopic chamber (24). The multi-stage telescopic chamber (24) is located on the side of the sealing plate (1) away from the storage curtain box (4). Both ends of the multi-stage telescopic chamber (24) are open. A pair of symmetrically placed opening and closing doors (241) are hinged at the opening on the side of the multi-stage telescopic chamber (24) away from the firewall (3).

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