Stretching type mine fireproof door sealing device

Abstract

The invention relates to a stretching type sealing device for a mine fireproof door. The stretching type sealing device comprises a sealing device liquid storage box, a liquid storage container, a water injection valve, a belt conveying mechanism, a balancing weight, a pulley, a belt pull-up roller, a sealing air door and an adjusting air window. The cross section of the rubber belt conveyor rack is smaller than that of the sealer liquid storage box, the rubber belt conveyor rack penetrates through the sealer liquid storage box, the sealer liquid storage box penetrates through the airtight air door, deformable metal grooves are fixedly installed at the two ends of the sealer liquid storage box through movable anchor points respectively, and the height of the deformable metal grooves is larger than that of the liquid storage container when the deformable metal grooves are unfolded. When water is injected into the liquid storage box of the sealing device, a complete sealing effect can be achieved, and the problems that a belt conveying mechanism part is prone to air leakage and cannot be completely sealed are solved.

Description

Technical Field

[0001] The invention relates to an extendable mine fire door sealing device, in particular to an extendable mine fire door which can be effectively sealed in the presence of a belt conveyor in a mine tunnel. Background Art

[0002] The installation of fire doors in coal mine tunnels is one of the key measures to ensure mine safety. The main function of fire doors is to prevent the spread of fire smoke, thereby controlling the spread of fire. In a mine, once a fire occurs, the fire doors need to be quickly closed to block wind and smoke flow, acting as a firewall, which not only helps to limit the scope of the fire, but also provides miners with valuable escape time. The installation of fire doors is also in line with the requirements of safety regulations such as the "Detailed Rules for Coal Mine Fire Prevention and Extinguishing" and the "Coal Mine Design Fire Prevention Code". These regulations clearly state that mines must establish underground fire sprinkler systems and should be equipped with anti-wind facilities, and fire doors are an indispensable part of these safety systems.

[0003] Fire doors play multiple roles in coal mine safety. First, they are an important barrier to prevent the intrusion of toxic and harmful gases. When using equalized pressure fire protection technology, fire doors can effectively isolate toxic gases and protect miners from them. Secondly, fire doors also help to improve the effectiveness of closed fire protection. In cases where closed fire protection technology is required, the presence of fire doors can ensure the tightness of closed areas and prevent the spread of fire through these areas. In addition, key buildings such as the derrick and wellhead room of newly built mines must be built with non-combustible materials. Fire doors, as part of these structures, further improve the fire resistance of mines.

[0004] In actual operation, the setting of fire doors needs to be determined according to the specific conditions of the mine and the design of the ventilation system. They are usually installed in key locations in the mine, such as the air inlet, warm air duct, forced ventilation wind tunnel, and underground electromechanical equipment chamber. In these areas, the presence of fire doors is crucial because they are the places most likely to be affected when a fire occurs. By setting up fire doors at these key points, quick action can be taken when a fire occurs to minimize the impact of the fire on the mine and personnel.

[0005] The biggest obstacle in the current design of fire doors is that the fixed-mounted belt conveyor affects the airtightness of the fire doors, seriously reducing the airtightness of the fire doors. Summary of the invention

[0006] The problem to be solved by the present invention is the problem of complete sealing of the belt conveyor in the case of a mine. To solve the above problem, the present invention is implemented through the following technical scheme: an extendable mine fire door sealing device, including a belt conveyor frame, a belt conveyor belt, a belt conveyor roller, a sealer liquid storage box, a sealer shell, a pull-up belt roller, a sealer friction reduction roller, a deformable metal trough, a deformable metal trough fixed end, a deformable metal trough movable end, a hydraulic pipeline, a sealed air door, an adjustment window, a pulley, a liquid storage container, an energy storage counterweight, a connecting cable, a liquid, and a water injection valve; the sealed air door is provided with two leaves, and the adjustment sealing window is provided above the sealed air door, and the sealed air door is provided with two leaves. The outer sides of the doors and adjustable sealing windows are fixed around the mine to form an enclosed space; the cross-section of the belt conveyor frame is smaller than the cross-section of the closed liquid storage box, and passes through the closed liquid storage box, the closed liquid storage box passes through the closed air door, and both ends are fixedly installed with deformable metal grooves through movable anchor points; the height of the deformable metal groove when unfolded is greater than the height of the closed liquid storage box; the height of the closed shell is higher than the height of the closed liquid storage box, and the bottom is fixedly installed on the ground, and the top is welded to the closed air door, and the belt of the belt conveyor is arranged on the periphery of the belt conveyor frame.

[0007] Furthermore, a plurality of belt rollers of the belt conveyor are provided, and are installed independently of each other and fixed to the ground.

[0008] The advantage of adopting the above further solution is that the belt rollers are independent of each other and there is no connecting cross bar in the middle, so that the belt pulling rod can rise freely, pulling the upper belt and the lower belt upward at the same time, avoiding air leakage of the belt part.

[0009] Furthermore, there are two liquid storage containers, two energy storage counterweights and two pulleys respectively, and they are all arranged above the two ends of the closed liquid storage tank.

[0010] The advantage of adopting the above further solution is that in case of fire, both ends of the sealer liquid storage box can be sealed at the same time, and the symmetrical design can make the deformable metal grooves at both ends expand upward at the same time.

[0011] Furthermore, the upper pull belt roller is longer than the belt of the belt conveyor, and is installed on the movable end of the deformable metal trough and located below the belt of the belt conveyor. The movable end of the deformable metal trough is connected to the upper pull belt roller through a connecting cable.

[0012] The advantages of adopting the above further scheme are: the length of the belt pulling rod is wider than the upper belt and the lower belt, which can ensure that the upper pulling rod can drive the upper belt and the lower belt to move well; the two ends are connected to the bottom of the liquid storage container by cables, so that when the liquid storage container rises, the belt pulling rod is also driven to rise, and the upper belt and the lower belt are lifted up at the same time.

[0013] Furthermore, the energy storage counterweight is connected to the top of the liquid storage container through a connecting cable bridging the pulley, and both ends of the water injection valve are connected to the bottom of the liquid storage container and the inside of the closed liquid storage tank through hydraulic pipelines.

[0014] The advantage of adopting the above further scheme is that when a fire occurs, the water valve opens, and the water in the liquid storage container flows into the sealed liquid storage tank. After the weight of the liquid storage container is reduced, the energy storage counterweight pulls the liquid storage container upward, and then pulls the deformable metal trough to expand upward, forming a space sealed with liquid. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the prior art and the drawings required for use in the embodiments. The following drawings are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0016] Figure 1 It is a front view of an extendable mine fire door sealing device of the present invention in a closed state; Figure 2 A top view of an extendable mine fire door sealing device of the present invention in a closed state; Figure 3 A side view of an extendable mine fire door sealing device of the present invention in a closed state; Figure 4 It is a front view of a stretchable mine fire door sealing device of the present invention when the belt is operating normally; Figure 5 A top view of an extendable mine fire door sealing device of the present invention when the belt is operating normally; Figure 6 The invention is a side view of an extendable mine fire door sealing device when the belt is operating normally.

[0017] illustrate: 1. Belt conveyor frame; 2. Belt conveyor belt; 3. Belt conveyor roller; 4. Enclosed liquid storage tank; 5. Enclosed shell; 6. Pull-up belt roller; 7. Enclosed friction reducing roller; 8. Deformable metal trough; 9. Fixed end of deformable metal trough; 10. Movable end of deformable metal trough; 11. Hydraulic pipeline; 12. Enclosed damper; 13. Adjustable wind window; 14. Pulley; 15. Liquid storage container; 16. Energy storage counterweight; 17. Connecting cable; 18. Liquid; 19. Water injection valve. DETAILED DESCRIPTION

[0018] In order to make the objectives, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with specific examples.

[0019] Combination Figures 1 to 6 A stretchable mine fire door sealing device, whose structure includes a belt conveyor frame 1, a belt conveyor belt 2, a belt conveyor roller 3, a sealer liquid storage box 4, a sealer shell 5, a pull-up belt roller 6, a sealer friction reduction roller 7, a deformable metal trough 8, a deformable metal trough fixed end 9, a deformable metal trough movable end 10, a hydraulic pipeline 11, a sealing damper 12, an adjusting wind window 13, a pulley 14, a liquid storage container 15, an energy storage counterweight 16, a connecting cable 17, a liquid 18, and a water injection valve 19; wherein the sealing damper 12 is provided with two leaves, one for staff to pass through, and the other for the belt conveyor frame 1 to pass through, and the adjusting wind window 13 is provided above the sealing damper 12.

[0020] The outer sides of the airtight damper 12 and the regulating window 13 are fixed around the mine to form an enclosed space. When installing this part, it is necessary to pay attention to not leaving gaps between the airtight damper 12, the regulating window 13 and the mine wall. At the same time, the cross section of the belt conveyor frame 1 is designed to be smaller than the cross section of the closed liquid storage box 4, and it passes through the closed liquid storage box 4, so that when the closed liquid storage box 4 is injected with liquid, the belt conveyor frame 1 is completely covered, avoiding the problem of incomplete sealing caused by its irregular structure.

[0021] The closed liquid storage box 4 is composed of a deformable metal trough 8, a liquid storage container 15 and a closed shell 5, wherein the deformable metal trough 8 is fixedly installed at both ends of the liquid storage container 15, the deformable metal trough 8 is designed to be U-shaped, and the inner end is fixed to the outer wall of the liquid storage container 15 using a movable anchor point, the height of the deformable metal trough 8 is set to be higher than the liquid storage container 15 after it is unfolded upward, the height of the closed shell 5 is higher than the height of the closed liquid storage box 4, and the bottom is fixedly installed on the ground, and the top is welded and sealed with the closed air door 12; the liquid storage container 15 passes through in the direction of the belt conveyor belt 2; when the deformable metal trough 8 is folded up, its outer end face is lower than the lower belt conveyor belt 2, which does not affect the normal transportation of coal by the belt.

[0022] The transport belt device includes a belt conveyor frame 1, a belt conveyor belt 2 and a belt conveyor roller 3. The belt conveyor belt 2 is arranged on the periphery of the belt conveyor frame 1. The belt conveyor belt 2 includes an upper belt and a lower belt. A plurality of belt conveyor rollers 3 are arranged. Each belt conveyor roller 3 is independently installed and fixed to the ground. The independent installation method makes it unnecessary to connect the track. Therefore, the upper pull belt roller 6 can use the flexibility of the lower belt and the upper belt to stretch it and lift it upward to a height higher than the sealer liquid storage tank 4, so as to achieve a sealing effect without cutting the belt.

[0023] There are two liquid storage containers 15 and energy storage counterweights 16, which are respectively located above the two ends of the sealed liquid storage tank 4. Due to the particularity of the mine, when the electric control equipment is used inside, it is required to have explosion-proof function, which increases the system cost. Therefore, the present invention changes the structure part to use the liquid storage container 15 and the energy storage counterweight 16 to work together, eliminating the electric control. During installation, the liquid storage container 15 needs to store enough liquid 18 so that the energy storage counterweight 16 can be pulled to the height limit position to store gravitational potential energy.

[0024] The upper belt pulley 6 is longer than the belt 2 of the belt conveyor and is fixed to the outer side of the movable end 10 of the deformable metal trough, and both ends are connected to the bottom of the liquid storage container 15 by connecting cables 17. During normal operation, the upper belt pulley 6 sinks below the lower belt of the belt conveyor 2 by its own weight without affecting the normal operation of the upper and lower belts.

[0025] The energy storage counterweight 16 is connected to the top of the liquid storage container 15 after bridging the pulley 14 through the connecting cable 17, and the two ends of the water injection valve 19 are connected to the bottom of the liquid storage container 15 and the inside of the closed liquid storage tank 4 through the hydraulic pipeline 11 respectively.

[0026] During normal operation, the weight of the liquid 18 stored in the liquid storage container 15 exceeds the weight of the energy storage counterweight 16, and the energy storage counterweight 16 is pulled to the height limit position.

[0027] When a fire occurs, the water injection valve 19 is opened, and the water in the liquid storage container 15 is injected into the closed liquid storage tank 4 through the hydraulic pipe 11. The liquid 18 in the liquid storage container 15 is gradually reduced. When the weight of the liquid storage container 15 is lower than the energy storage counterweight 16, the energy storage counterweight 16 will move downward to lift the liquid storage container 15. The liquid storage container 15 then stretches the U-shaped deformable metal trough 8 outward through the connecting cable 17, and at the same time, the upper pull belt roller 6 lifts the lower belt upward, and after touching the upper belt, lifts the lower belt and the upper belt upward at the same time. When the liquid storage container 15 reaches the upper limit, the U-shaped deformable metal trough 8 is fully expanded. At this time, the highest position of the U-shaped deformable metal trough 8 and the highest points of the lower belt and the upper belt are higher than the closed liquid storage tank 4. The gas will not be able to pass through the end surface formed by the closed liquid storage tank 4, thereby achieving a completely sealed effect, thereby achieving a completely liquid-sealed effect.

[0028] What is disclosed above is only a preferred embodiment of the present invention, and it certainly cannot be used to limit the scope of rights of the present invention. Ordinary technicians in this field can understand that all or part of the processes of the above embodiment and equivalent changes made according to the claims of the present invention still fall within the scope of the invention.

Claims

1. An extendable mine fire door sealing device, characterized in that: The invention comprises a belt conveyor frame (1), a belt conveyor belt (2), a belt conveyor roller (3), a sealed liquid storage box (4), a sealed shell (5), a pull-up belt roller (6), a sealed friction reducing roller (7), a deformable metal trough (8), a fixed end of the deformable metal trough (9), a movable end of the deformable metal trough (10), a hydraulic pipeline (11), a sealed air door (12), an adjustable air window (13), a pulley (14), a liquid storage container (15), an energy storage counterweight (16), a connecting cable (17), a liquid (18), and a water injection valve (19); the sealed air door (12) is provided with two leaves, the adjustable sealing window is provided above the sealed air door (12), and the sealed air door (12) , the outer side of the adjustable sealing window (13) is fixed around the mine to form a closed space; the cross-section of the belt conveyor frame (1) is smaller than the cross-section of the sealed liquid storage box (4), and passes through the sealed liquid storage box (4), the sealed liquid storage box (4) passes through the sealed air door (12), and the two ends are respectively fixed with a deformable metal groove (8) through movable anchor points; the height of the deformable metal groove (8) when unfolded is greater than the height of the sealed liquid storage box (4); the height of the sealed shell (5) is higher than the height of the sealed liquid storage box (4), and the bottom is fixedly installed on the ground, and the top is welded and sealed with the sealed air door (12); the belt (2) of the belt conveyor is arranged on the periphery of the belt conveyor frame (1).

2. The extendable mine fire door sealing device according to claim 1, characterized in that: The belt conveyor rollers (3) are provided in a plurality and are installed independently of each other and fixed to the ground.

3. The extendable mine fire door sealing device according to claim 1, characterized in that: The liquid storage container (15), the energy storage counterweight (16) and the pulley (14) are respectively provided in pairs, and are all arranged above the two ends of the closed liquid storage box (4).

4. The extendable mine fire door sealing device according to claim 1, characterized in that: The pull-up belt roller (6) is longer than the belt (2) of the belt conveyor and is installed at the movable end (10) of the deformable metal groove.

5. The extendable mine fire door sealing device according to claim 1, characterized in that: The movable end (10) of the deformable metal trough is connected to the upper pull belt roller (6) via a connecting cable (17).

6. The extendable mine fire door sealing device according to claim 1, characterized in that: The energy storage counterweight (16) is connected to the top of the liquid storage container (15) by connecting the cable (17) across the pulley (14), and the two ends of the water injection valve (19) are connected to the bottom of the liquid storage container (15) and the inside of the closed liquid storage tank (4) respectively through the hydraulic pipeline (11).

Images