Mine fireproof door and mine fireproof system
By designing remotely controlled mine fire doors, the problem of manually closing doors during underground fires of coal mines is solved, and the smoke flow and the fire area are automatically cut off, improving safety and timeliness of fire control.
Patent Information
- Application Number
- CN202421409051.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-19
- Publication Date
- 2025-03-28
- Estimated Expiration
- 2034-06-19
AI Technical Summary
During a fire underground in a coal mine, the mine fire door needs to be closed manually, causing the fire to spread rapidly and threaten the lives and safety of people.
A mine fire door is designed, which can remotely control the door body to switch to the open state through the mine control system, cut off the smoke flow in time and isolate the fire area.
It realizes automatic closing of the fire door when a fire occurs, improving safety and timely fire control, and avoiding the rapid spread of the fire.
Smart Images
Figure CN222686741U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of mine fire protection equipment, in particular to a mine fire protection door and a mine fire protection system. Background Art
[0002] When a fire occurs underground in a coal mine, the mine fire door can block the fire smoke flow and prevent the fire from spreading, thereby reducing casualties.
[0003] Mine fire doors are usually installed in mine tunnels. Mine fire doors in related technologies include door frames and door bodies. The door bodies are hinged on the door frames. When operating normally underground, the mine fire doors are in an open state. When a fire occurs underground, workers are required to close and lock the mine fire doors. Since underground fires spread quickly and are accompanied by impact airflow, they pose a greater threat to the lives of workers. In addition, if the workers fail to close the fire doors in time, the fire will spread rapidly. Utility Model Content
[0004] The utility model aims to solve one of the technical problems in the related art at least to a certain extent.
[0005] To this end, an embodiment of the utility model proposes a mine fire door. When a fire occurs, the door body can be remotely controlled to switch to an open state, thereby promptly cutting off the smoke flow and isolating the fire area to avoid the rapid spread of the fire.
[0006] The mine fire door of the utility model embodiment includes a door frame, a door body and a driving member, the door frame is used to be connected to a mounting base, the door frame has a door opening, the door body is hinged to the door frame, so that the door body can switch between a closed state blocking the door opening and an open state opening the door opening; the driving member includes a fixed part and a movable part, the fixed part is connected to the mounting base, the movable part is connected to the door body, and the movable part is movably connected to the fixed part; wherein the driving member has a control end for electrically connecting to a control system of the mine, so as to control the movement of the movable part relative to the fixed part through the control end.
[0007] In some embodiments, the door body is hinged to the door frame via a support shaft, the door body includes a connecting portion, the connecting portion is arranged on a side of the door body away from the support shaft, and the moving portion is connected to the connecting portion.
[0008] In some embodiments, a sealing strip is provided between the door body and the door frame, and the sealing strip abuts against the door body and the door frame.
[0009] In some embodiments, the door body has a pressure relief groove, which runs through the door body, and the mine fire door also includes a pressure relief plate for blocking the pressure relief groove, and the pressure relief plate is hinged to the door body.
[0010] In some embodiments, the pressure relief plate is hinged to the door body via a rotating shaft, a torque piece is provided on the rotating shaft, and the torque piece is used to apply a torsional force to the pressure relief plate to drive the pressure relief plate to rotate in a direction of blocking the pressure relief groove via the rotating shaft.
[0011] In some embodiments, the number of the pressure relief grooves is two, and the two pressure relief grooves are arranged at intervals along the width direction of the door body, and the pressure relief plates correspond to the pressure relief grooves one by one; a guide platform is provided on the door body, and the guide platform is provided between the two pressure relief grooves, and the size of the guide platform in the width direction of the door body increases along the flow direction of the airflow.
[0012] In some embodiments, the two pressure relief plates are respectively a first pressure relief plate and a second pressure relief plate, the first pressure relief plate is hinged to the door body through a first rotating shaft, and the second pressure relief plate is hinged to the door body through a second rotating shaft; a synchronization component is provided between the first rotating shaft and the second rotating shaft so that the first pressure relief plate and the second pressure relief plate can be opened or closed at the same time.
[0013] In some embodiments, the synchronization assembly includes two gears meshing with each other, and the two gears are respectively connected to the first rotating shaft and the second rotating shaft.
[0014] The mine fire protection system of the embodiment of the utility model comprises a mine fire door, and the mine fire door is the mine fire door described in any of the above embodiments.
[0015] In some embodiments, the mine fire protection system further includes a control device and a fire detection device, the control device is electrically connected to the control end, and the fire detection device is electrically connected to the control device.
[0016] The mine fire door of the embodiment of the utility model is applied to the mine fire protection system. When a fire occurs, the driving component can be remotely controlled by the mine control system to start, and then the door body can be controlled to rotate and switch to a closed state, so as to cut off the smoke flow and isolate the fire area in time to avoid the rapid spread of fire.
[0017] Compared with the method in related technologies that requires manual closing of mine fire doors, this method is safer and can control the fire more timely. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] Figure 1 The utility model is a schematic diagram of the positions of a mine fire door and a mine tunnel according to an embodiment of the utility model.
[0019] Figure 2 The utility model is a schematic structural diagram of a mine fire door with a pressure relief plate closed.
[0020] Figure 3 It is a structural schematic diagram of a mine fire door in an embodiment of the utility model with the pressure relief plate opened.
[0021] Figure numerals: 100, mine fire door; 1, door frame; 11, door opening; 12, bracket; 2, door body; 21, body; 211, first surface; 212, second surface; 22, connecting part; 23, pressure relief groove; 3, driving cylinder; 31, cylinder body; 32, piston rod; 4, pressure relief plate; 41, torque member; 42, first pressure relief plate; 421, first rotating shaft; 43, second pressure relief plate; 431, second rotating shaft; 5, guide platform; 51, reverse flow surface; 6, synchronization component; 61, first gear; 62, second gear;
[0022] 200. Mine tunnels. DETAILED DESCRIPTION
[0023] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to be used to explain the present invention, but cannot be understood as limiting the present invention.
[0024] like Figure 1 and Figure 2 As shown, the mine fire door 100 of the utility model embodiment includes a door frame 1, a door body 2 and a driving member, the door frame 1 is used to connect with the installation base, the door frame 1 has a door opening 11, the door body 2 is hinged to the door frame 1, so that the door body 2 can switch between a closed state blocking the door opening 11 and an open state opening the door opening 11; the driving member includes a fixed part and a movable part, the fixed part is connected to the installation base, the movable part is connected to the door body 2, and the movable part is movably connected to the fixed part; wherein the driving member has a control end for electrically connecting to the control system of the mine, so as to control the movement of the movable part relative to the fixed part through the control end.
[0025] The mine fire door 100 of the embodiment of the utility model is applied to the mine fire protection system. When a fire occurs, the driving component can be remotely controlled by the mine control system to start, and then the door body 2 can be controlled to rotate and switch to a closed state, so as to cut off the smoke flow and isolate the fire area in time to avoid the rapid spread of fire.
[0026] Compared with the method in the related art that requires manual closing of the mine fire door 100, this method is safer and can control the fire more timely.
[0027] In this embodiment, the installation base refers to the side wall of the mine tunnel 200. Figure 1As shown, the door frame 1 is fixed to the side wall of the mine tunnel 200 by bolts, and the door frame 1 is sealedly connected to the side wall of the mine tunnel 200 .
[0028] like Figure 2 As shown, the driving member is a driving cylinder 3, which is arranged near the upper side of the door opening 11, and extends horizontally. The fixed part is a cylinder body 31 of the driving cylinder 3, and the movable part is a piston rod 32 of the driving cylinder 3. A bracket 12 is welded on the door frame 1, and one end of the cylinder body 31 away from the piston rod 32 is hinged to the bracket 12, and one end of the piston rod 32 away from the cylinder body 31 is hinged to the door body 2.
[0029] By controlling the piston rod 32 to extend and retract relative to the cylinder body 31 , the door body 2 can be controlled to rotate relative to the door frame 1 , thereby controlling the mine fire door 100 to switch between an open state and a closed state.
[0030] like Figure 1 and Figure 2 As shown, the door body 2 includes a main body 21, which is used to block the door opening 11. The main body 21 has a first surface 211 and a second surface 212. When the door body 2 is in a closed state, the first surface 211 faces the direction of the airflow, and the second surface 212 faces the door opening 11 and blocks the door opening 11; when the door body 2 is switched from a closed state to an open state, the main body 21 rotates in the direction from the second surface 212 to the first surface 211.
[0031] In some embodiments, the door body 2 is hinged to the door frame 1 via a support shaft, the door body 2 includes a connecting portion 22 , the connecting portion 22 is arranged on a side of the door body 2 away from the support shaft, and the moving portion is connected to the connecting portion 22 .
[0032] When the door body 2 is controlled to rotate by the driving member, the point of action of the moving part on the door body 2 is far away from its rotation axis (ie, the axis of the supporting shaft), thereby saving more effort.
[0033] like Figure 2 As shown, the connecting portion 22 is fixed to the second surface 212 of the door body 2 by bolts, and the connecting portion 22 extends in a direction away from the door body 2 so that the piston rod 32 is hinged to the connecting portion 22 .
[0034] In some embodiments, a sealing strip is provided between the door body 2 and the door frame 1 , and the sealing strip abuts against the door body 2 and the door frame 1 .
[0035] By providing a sealing strip, the sealing performance of the connection between the door body 2 and the door frame 1 can be improved, and the probability of smoke leakage through the gap between the two during a fire can be reduced. In addition, the sealing strip can also provide a buffer when the door body 2 is closed, thereby protecting the door body 2 and the door frame 1.
[0036] Optionally, the sealing strip is a fireproof sealing strip, such as a sealing strip made of silicone rubber, expandable graphite or the like.
[0037] Therefore, the sealing strip has good high temperature resistance and heat insulation, and can ensure the sealing of the door body 2 to the door opening 11 in case of fire.
[0038] Optionally, the sealing strip surrounds the door body 2 along the circumference.
[0039] Thereby, a better sealing effect can be achieved.
[0040] In some embodiments, Figure 1 and Figure 3 As shown, the door body 2 has a pressure relief groove 23 , which runs through the door body 2 . The mine fire door 100 also includes a pressure relief plate 4 for blocking the pressure relief groove 23 , which is hinged to the door body 2 .
[0041] It is known that when a fire occurs, as the pressure in the mine tunnel 200 continues to rise, a strong shock wave will be generated. The shock wave produces a high-pressure impact on the door body 2, which can easily cause damage to the door body 2 and fail to block subsequent impacts, making the fire difficult to control.
[0042] Through the above arrangement, before the energy of the shock wave exceeds the bearing load of the door body 2, the shock wave can force the pressure relief plate 4 to open, and part of the airflow is released through the pressure relief groove 23, so that the pressure in the tunnel is reduced. Then the pressure relief plate 4 is closed and can continue to block the airflow in the tunnel, thereby avoiding the chance of damage to the door body 2 under the impact of a strong shock wave.
[0043] As an example, Figure 2 and Figure 3 As shown, the pressure relief plate 4 is disposed on the second surface 212 of the door body 2 . When the pressure relief plate 4 is closed, the pressure relief groove 23 can be completely blocked. When the pressure relief plate 4 is opened, the pressure relief plate 4 rotates in a direction away from the door body 2 .
[0044] In some embodiments, the pressure relief plate 4 is hinged to the door body 2 via a rotating shaft, and a torque member 41 is provided on the rotating shaft. The torque member 41 is used to apply a torsional force to the pressure relief plate 4 to drive the pressure relief plate 4 to rotate in a direction of blocking the pressure relief groove 23 via the rotating shaft.
[0045] By setting the torque piece 41, when the pressure relief plate 4 opens under the impact of the shock wave, the torque piece 41 can store energy. When the pressure of the shock wave is reduced after the pressure relief, the pressure relief plate 4 can automatically reset under the action of the torque piece 41, and seal the pressure relief groove 23 again, thereby isolating the smoke flow.
[0046] like Figure 2 As shown, the rotating shaft is rotatably supported on the door body 2 through a mounting seat, and the rotating shaft is fixedly connected to the pressure relief plate 4, so that the pressure relief plate 4 can rotate relative to the door body 2.
[0047] Alternatively, if Figure 2 As shown, the torque member 41 is a torsion spring, which is sleeved on the rotating shaft, with one end fixedly connected to the rotating shaft and the other end fixedly connected to the door body 2.
[0048] The torsion spring has good stability and pressure resistance. By setting the torsion member 41 as a torsion spring, the stability of the rotation of the pressure relief plate 4 can be improved, and the service life of the torsion member 41 can be increased.
[0049] In some embodiments, there are two pressure relief grooves 23, and the two pressure relief grooves 23 are arranged at intervals along the width direction of the door body 2, and the pressure relief plate 4 corresponds to the pressure relief grooves 23 one by one; a guide platform 5 is provided on the door body 2, and the guide platform 5 is provided between the two pressure relief grooves 23, and the size of the guide platform 5 in the width direction of the door body 2 increases along the flow direction of the airflow.
[0050] Through the above arrangement, the airflow is depressurized through the two pressure relief grooves 23, which can disperse the airflow and prevent the depressurized airflow from directly rushing to the middle area of the mine tunnel 200 and posing a threat to personnel safety.
[0051] In addition, under the action of the guide platform 5 , the airflow can flow to the two pressure relief grooves 23 more evenly, so that the impact force borne by the two pressure relief plates 4 is more uniform, thereby increasing the stability of the door body 2 .
[0052] As an example, Figure 1 As shown, the guide platform 5 is arranged between the two pressure relief grooves 23, and the cross-section of the guide platform 5 is in the shape of a triangular prism. The cross-section of the guide platform 5 is in the shape of an isosceles triangle, and the vertex angle of the isosceles triangle faces the direction of the airflow. Therefore, two backflow surfaces 51 are formed on both sides of the vertex angle of the isosceles triangle. The two backflow surfaces 51 are inclined toward the two pressure relief grooves 23 along the flow direction of the airflow, which can guide the airflow so that the airflow flows evenly to the two pressure relief grooves 23.
[0053] In some embodiments, the two pressure relief plates 4 are respectively a first pressure relief plate 42 and a second pressure relief plate 43. The first pressure relief plate 42 is hinged to the door body 2 through a first rotating shaft 421, and the second pressure relief plate 43 is hinged to the door body 2 through a second rotating shaft 431. A synchronization component 6 is provided between the first rotating shaft 421 and the second rotating shaft 431 to enable the first pressure relief plate 42 and the second pressure relief plate 43 to be opened or closed at the same time.
[0054] Through the above arrangement, when the first pressure relief plate 42 rotates, the second pressure relief plate 43 can be driven to rotate at the same time under the transmission action of the synchronization component 6. Similarly, the rotation of the second pressure relief plate 43 can also drive the first pressure relief plate 42 to rotate, so that the first pressure relief plate 42 and the second pressure relief plate 43 can be opened or closed at the same time. When one of the pressure relief plates 4 is opened under the impact of strong airflow, the two pressure relief plates 4 can be driven to open at the same time, so that pressure is released through the two pressure relief grooves 23 at the same time, preventing the pressure from being released only through one pressure relief groove 23, which causes uneven pressure release and thus affects the stability of the door body 2.
[0055] In some embodiments, Figure 2 and Figure 3 As shown, the synchronization assembly 6 includes two gears meshing with each other, and the two gears are respectively connected to the first rotating shaft 421 and the second rotating shaft 431.
[0056] As an example, Figure 2 and Figure 3 As shown, the first rotating shaft 421 and the second rotating shaft 431 are disposed on one side of the two pressure relief grooves 23 close to each other, the first rotating shaft 421 and the second rotating shaft 431 both extend vertically, and the synchronization assembly 6 is arranged on the upper side of the torque member 41 .
[0057] The two gears are the first gear 61 and the second gear 62. The first gear 61 is mounted on the first rotating shaft 421 and rotates synchronously with it. The second gear 62 is mounted on the second rotating shaft 431 and rotates synchronously with it. The transmission of the first pressure relief plate 42 and the second pressure relief plate 43 can be realized, and the uniformity of the force on the two pressure relief plates 4 during the pressure relief process is improved, thereby improving the overall stability of the door body 2.
[0058] The mine fire protection system of the embodiment of the utility model comprises a mine fire door 100, and the mine fire door 100 is the mine fire door 100 of any of the above embodiments.
[0059] By setting up the mine fire door 100, when a fire occurs, the control system of the mine can remotely control the door body 2 to open, that is, remotely control the fire door to switch to a closed state, so as to cut off the smoke flow and isolate the fire area in time to prevent the fire from spreading rapidly.
[0060] In some embodiments, the mine fire protection system further includes a control device and a fire detection device, the control device is electrically connected to the control end, and the fire detection device is electrically connected to the control device.
[0061] Through the above settings, when a fire occurs, the fire detection device can detect the fire and transmit the signal to the control device, which controls the action of the driving member to drive the door body 2 to rotate and switch to a closed state, thereby realizing automatic closing of the fire door in case of fire and controlling the fire in time.
[0062] Optionally, the control device is a control system of a mine.
[0063] Optionally, the fire detection device is a fire detector, such as a smoke fire detector, a temperature fire detector, or a gas fire detector.
[0064] Optionally, multiple mine fire doors 100 are arranged along the length direction of the mine tunnel 200 , and each mine fire door 100 corresponds to at least one fire detection device, which is arranged on the side wall of the mine tunnel 200 near the mine fire door 100 .
[0065] Therefore, when a fire occurs between two adjacent mine fire doors 100, the two fire detection devices closest to the fire can detect the fire in time and then control the piston rod 32 of the drive member to extend, so that the door body 2 switches to a closed state, thereby isolating the mine tunnel 200 more timely and effectively, so as to control the fire and isolate the fire area.
[0066] Optionally, the mine fire protection system may further include a manual control device, which is arranged on a side of the door body 2 away from the airflow direction, and includes a manual button for controlling the start and stop of the cylinder, and the manual button is electrically connected to the cylinder.
[0067] Therefore, the staff can manually control the start and stop of the driving part through the manual control device to improve the flexibility of operation.
[0068] Although the embodiments of the present invention have been shown and described above, it is to be understood that the above embodiments are illustrative and cannot be construed as limitations on the present invention. Changes, modifications, substitutions and variations of the above embodiments by those of ordinary skill in the art are all within the scope of protection of the present invention.
Claims
1. A mine fire door (100), characterized in that: include: A door frame (1), the door frame (1) being used to be connected to a mounting base, the door frame (1) having a door opening (11); A door body (2), the door body (2) being hinged to the door frame (1) so that the door body (2) can switch between a closed state for blocking the door opening (11) and an open state for opening the door opening (11), the door body (2) having a pressure relief groove (23), the pressure relief groove (23) penetrating the door body (2); A driving member, the driving member comprising a fixed portion and a movable portion, the fixed portion being connected to the mounting base, the movable portion being connected to the door body (2), and the movable portion being movably connected to the fixed portion; a pressure relief plate (4) for sealing the pressure relief groove (23), the pressure relief plate (4) being hinged to the door body (2); Wherein, the driving member has a control end for electrically connecting to a control system of the mine, so as to control the movement of the movable part relative to the fixed part through the control end.
2. The mine fire door (100) according to claim 1, characterized in that: The door body (2) is hinged to the door frame (1) via a support shaft, the door body (2) comprises a connecting portion (22), the connecting portion (22) is arranged on a side of the door body (2) away from the support shaft, and the movable portion is connected to the connecting portion (22).
3. The mine fire door (100) according to claim 1, characterized in that: A sealing strip is provided between the door body (2) and the door frame (1), and the sealing strip abuts against the door body (2) and the door frame (1).
4. The mine fire door (100) according to claim 1, characterized in that: The pressure relief plate (4) is hinged to the door body (2) via a rotating shaft, and a torque member (41) is provided on the rotating shaft. The torque member (41) is used to apply a torsional force to the pressure relief plate (4) so as to drive the pressure relief plate (4) to rotate in a direction of blocking the pressure relief groove (23) via the rotating shaft.
5. The mine fire door (100) according to claim 1, characterized in that: The number of the pressure relief grooves (23) is two, the two pressure relief grooves (23) are arranged at intervals along the width direction of the door body (2), and the pressure relief plates (4) correspond to the pressure relief grooves (23) one by one; The door body (2) is provided with a flow guide platform (5), the flow guide platform (5) is arranged between the two pressure relief grooves (23), and the dimension of the flow guide platform (5) in the width direction of the door body (2) increases along the flow direction of the airflow.
6. The mine fire door (100) according to claim 5, characterized in that: The two pressure relief plates (4) are respectively a first pressure relief plate (42) and a second pressure relief plate (43); the first pressure relief plate (42) is hinged to the door body (2) via a first rotating shaft (421); and the second pressure relief plate (43) is hinged to the door body (2) via a second rotating shaft (431); A synchronization component (6) is provided between the first rotating shaft (421) and the second rotating shaft (431), so that the first pressure relief plate (42) and the second pressure relief plate (43) are opened or closed simultaneously.
7. The mine fire door (100) according to claim 6, characterized in that: The synchronization component (6) comprises two mutually meshing gears, and the two gears are respectively connected to the first rotating shaft (421) and the second rotating shaft (431).
8. A mine fire protection system, characterized in that: It comprises a mine fire door (100), wherein the mine fire door (100) is the mine fire door (100) according to any one of claims 1 to 7.
9. The fire protection system according to claim 8, characterized in that: Also includes: A control device, the control device being electrically connected to the control end; A fire detection device is electrically connected to the control device.