Civil air defense door capable of preventing fire smoke from permeating

Abstract

The utility model relates to the technical field of disaster prevention equipment, in particular to a civil defense door for preventing fire smoke from permeating, which comprises a disaster prevention door body, a door body upper frame is arranged at the top end of the outer wall of the disaster prevention door body, a door body base is arranged at the bottom end of the outer wall of the disaster prevention door body, and a sealing component for preventing fire smoke from permeating is arranged on the outer side of the disaster prevention door body. The sealing component comprises a flow dividing pipe, the bottom end of the outer wall of the flow dividing pipe is fixedly communicated with a water injection nozzle, the upper end of the disaster prevention door body is provided with the flow dividing pipe and the water injection nozzle which are used for conveying water, the inner wall of the disaster prevention door body is provided with the heat exchange groove, and external water can be conveyed into the flow dividing pipe through the water inlet seat when a fire occurs; and the flow dividing pipe can convey external water into the heat exchange groove through the water injection nozzle, so that the water can cool the disaster prevention door body, and the situation that the temperature of the disaster prevention door body rises too high during fire catching, and consequently the sealing performance of the side sealing strips and the edge sealing strips is affected is avoided.

Description

Technical Field

[0001] This utility model relates to the field of disaster prevention equipment technology, specifically to a fire-resistant door that prevents fire smoke from seeping in. Background Technology

[0002] Civil defense doors, also known as air defense doors, are security doors specifically designed for civil defense projects (such as underground air-raid shelters and refuges). They are primarily used to protect people's safety during wartime, natural disasters, or other emergencies.

[0003] In the event of a fire, the temperature of most air-raid shelter doors, which are made of metal, rises significantly. Since the gaps in air-raid shelter doors are mostly sealed with rubber strips, the high temperature can easily cause the rubber sealing layer to deform, thereby reducing its sealing performance. This allows smoke from the fire to easily seep in through the air-raid shelter door. Therefore, existing air-raid shelter doors have certain shortcomings in use.

[0004] In conclusion, it is necessary to invent a fire-resistant door that prevents smoke from seeping in during a fire. Utility Model Content

[0005] Therefore, this utility model provides a fire-resistant door that prevents fire smoke from seeping in, in order to solve the problem that the gaps in fire-resistant doors are mostly sealed with rubber strips. However, excessively high temperatures can easily cause the rubber sealing layer to deform, thereby reducing its sealing performance and allowing fire smoke to easily seep in through the fire-resistant door.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a fire-resistant door for preventing the infiltration of fire smoke, comprising a fire-resistant door body, a door body upper frame provided at the top of the outer wall of the fire-resistant door body, a door body base provided at the bottom of the outer wall of the fire-resistant door body, and a sealing component for preventing the infiltration of fire smoke provided on the outer side of the fire-resistant door body.

[0007] The sealing component includes a diversion pipe, which is located inside the upper frame of the door. The bottom of the outer wall of the diversion pipe is fixedly connected to a water injection nozzle, and the top of the outer wall of the disaster prevention door is provided with a water injection port that works in conjunction with the water injection nozzle.

[0008] Preferably, the disaster prevention door has side door frames for installation on both sides of its outer wall. The upper and lower ends of the side door frames are fixed to the two ends of the outer wall opposite to the upper frame and base of the door. The two ends of the disaster prevention door are hinged to the two sides of the inner wall of the side door frames.

[0009] Preferably, the interior of the disaster prevention door is provided with a heat exchange tank for water flow, the top of the heat exchange tank is connected to the bottom of the water inlet, and a drain hole for water supply is provided at the bottom of the outer wall of the disaster prevention door at a position corresponding to the heat exchange tank.

[0010] Preferably, a water inlet seat for replenishing water is installed at the top of the outer wall of the disaster prevention door. The bottom of the inner wall of the water inlet seat is connected to the water inlet at the top of the inner wall of the diversion pipe through a water delivery hose. Multiple water injection nozzles are evenly arranged in a strip array at the bottom of the inner wall of the diversion pipe.

[0011] Preferably, the bottom of the inner wall of the upper frame of the door is provided with a clearance hole at the position corresponding to the water injection nozzle to facilitate the passage of the water injection nozzle. The position of the clearance hole on the upper frame of the door corresponds to the water injection port. Guide rods are fixed on both the upper and lower sides of the inner wall of the upper frame of the door.

[0012] Preferably, guide holes are provided at both ends of the outer wall of the diverter tube and at positions corresponding to the guide rod. The diverter tube is slidably connected to the outer wall of the guide rod through the guide holes, and the end of the diverter tube near the guide rod is sealed.

[0013] Preferably, a first electrically controlled push rod is fixed to the top of the outer wall of each diversion pipe, and the upper ends of the plurality of first electrically controlled push rods are fixed at positions corresponding to the top of the inner wall of the upper frame of the door. A pull-down spring is fixed to the bottom of the outer wall of each diversion pipe, and the plurality of pull-down springs are arranged between the water injection nozzles. The bottom end of the pull-down spring is fixed to the bottom of the inner wall of the upper frame of the door.

[0014] Preferably, a return groove is provided at the bottom of the inner wall of the door base and at the position corresponding to the drainage hole. A drainage pipe is connected to one side of the inner wall of the return groove. Opening and closing mechanisms are installed on both sides of the front end of the outer wall of the disaster prevention door. The opening and closing mechanism includes a second electrically controlled push rod. The two ends of the second electrically controlled push rod are respectively connected to the corresponding positions of the disaster prevention door and the wall through hinged connecting seats.

[0015] Preferably, the outer wall of the disaster prevention door and the joints with the upper frame, base and side frame of the door are provided with sealing edge strips. The two disaster prevention doors are connected to opposite sides with sealing side strips. The side sealing strips are arranged in a stepped shape and the two side sealing strips interlock with each other.

[0016] The beneficial effects of this utility model are:

[0017] In this invention, a water supply pipe and a water injection nozzle are installed at the upper end of the fire prevention door, and a heat exchange groove is opened on the inner wall of the fire prevention door. In the event of a fire, external water can be supplied to the water supply pipe through the water inlet seat. The water supply pipe will then deliver the external water to the heat exchange groove through the water injection nozzle, so that the water can cool down the fire prevention door and prevent the temperature of the fire prevention door from rising too high when it catches fire, which would affect the sealing performance of the side sealing strip and the edge sealing strip. This is to prevent smoke from seeping into the outside through the fire door in the event of a fire. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the external structure of the present invention viewed from the front.

[0019] Figure 2 This is a partial cross-sectional view of the present invention from the front view.

[0020] Figure 3 This utility model Figure 2 Enlarged structural diagram at point A;

[0021] Figure 4 This is a partial cross-sectional view of the disaster prevention door body in this utility model from a top view.

[0022] Figure 5 This is a three-dimensional structural diagram of the disaster prevention door body in this utility model from a side view.

[0023] Figure 6 This is a top view of the door opening and closing mechanism of this utility model.

[0024] In the diagram: 100, disaster prevention door body; 101, water inlet; 110, side sealing strip; 120, edge sealing strip; 200, door upper frame; 210, water inlet seat; 220, diversion pipe; 230, first electric control push rod; 240, guide rod; 250, pull-down spring; 260, water injection nozzle; 300, door base; 310, return channel; 400, door opening and closing mechanism; 410, second electric control push rod; 420, hinged connecting seat. Detailed Implementation

[0025] The preferred embodiments of the present invention will be described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are for illustration and explanation only and are not intended to limit the present invention.

[0026] See attached document Figures 1-6 This utility model provides a fire-resistant door for preventing smoke infiltration, including a fire-resistant door body 100. A door upper frame 200 is provided at the top of the outer wall of the fire-resistant door body 100, and a door base 300 is provided at the bottom of the outer wall of the fire-resistant door body 100. Side door frames for installation are provided on both sides of the outer wall of the fire-resistant door body 100. The upper and lower ends of the side door frames are fixed to the two ends of the outer wall opposite to the door upper frame 200 and the door base 300. The combination of the door upper frame 200, the door base 300 and the side door frames can provide a frame for installing the fire-resistant door body 100, so that it can be installed at the entrance and exit position. The two ends of the fire-resistant door body 100 are hinged to the two sides of the inner wall of the side door frames.

[0027] The outer side of the disaster prevention door 100 is equipped with a sealing component to prevent the infiltration of fire smoke. The sealing component includes a diversion pipe 220, which is located inside the upper frame 200 of the door. The bottom end of the outer wall of the diversion pipe 220 is fixedly connected to a water injection nozzle 260. The top of the outer wall of the disaster prevention door 100 is provided with a water injection port 101 for use with the water injection nozzle 260. The interior of the disaster prevention door 100 is provided with a heat exchange tank for water flow. The top end of the heat exchange tank is connected to the bottom end of the water injection port 101. The water injection port 101 is provided to deliver water. The water is fed into a heat exchange tank, allowing it to exchange heat with the disaster prevention door 100 and cool down, thereby reducing the temperature of the door 100. A drain hole for water supply is provided at the bottom of the outer wall of the disaster prevention door 100, corresponding to the position of the heat exchange tank. This drain hole is for discharging the water after heat exchange. A water inlet seat 210 for replenishing water is installed at the top of the outer wall of the disaster prevention door 100. The bottom of the inner wall of the water inlet seat 210 is connected to the water inlet at the top of the inner wall of the diversion pipe 220 via a water supply hose. The water supply hose has a nozzle for water injection. The water injection nozzles 260 are evenly arranged in a strip array at the bottom of the inner wall of the distribution pipe 220, allowing for vertical movement. These nozzles are designed to inject water into the heat exchange tank through the water inlet 101. The bottom of the inner wall of the upper frame 200 has clearance holes at positions corresponding to the water injection nozzles 260, allowing the nozzles to pass through. These clearance holes correspond to the positions of the water inlets 101. The bottom of the inner wall of the 0 is inserted into the water inlet 101. Guide rods 240 are fixed on both the upper and lower sides of the inner wall of the upper frame 200 of the door. Guide through holes are opened at both ends of the outer wall of the diversion pipe 220 and at the corresponding positions of the guide rods 240. The diversion pipe 220 is slidably connected to the outer wall of the guide rods 240 through the guide through holes. The end of the diversion pipe 220 near the guide rods 240 is sealed. The guide rods 240 are provided to guide the movement direction of the diversion pipe 220 without affecting the up and down movement of the diversion pipe 220.

[0028] Each of the top ends of the outer wall of the diversion pipe 220 is fixed with a first electrically controlled push rod 230. The upper ends of the multiple first electrically controlled push rods 230 are fixed at corresponding positions on the top end of the inner wall of the upper frame 200 of the door. The first electrically controlled push rods 230 are used to control the up and down movement of the diversion pipe 220. When energized, the first electrically controlled push rods 230 can pull the diversion pipe 220 upward, so that the diversion pipe 220 can be retracted into the upper frame 200 of the door when not in use, thereby preventing the water injection nozzle 260 from affecting the opening and closing of the disaster prevention door 100. Each of the bottom ends of the outer wall of the diversion pipe 220 is fixed with a pull-down spring 250. All are installed between the water injection nozzles 260. The bottom end of the pull-down spring 250 is fixed to the bottom end of the inner wall of the upper frame 200 of the door. The pull-down spring 250 is designed to quickly pull the diversion pipe 220 downward after the first electric control push rod 230 is de-energized, so that the water injection nozzle 260 can be inserted into the water injection port 101 through the clearance hole. A return groove 310 is provided at the bottom end of the inner wall of the door base 300, corresponding to the position of the drain hole. A drain pipe is connected to one side of the inner wall of the return groove 310. The return groove 310 can collect the water after heat exchange and then discharge it through the drain pipe. Openings are installed on both sides of the front end of the outer wall of the disaster prevention door 100. The door closing mechanism 400 includes a second electrically controlled push rod 410. Both ends of the second electrically controlled push rod 410 are connected to the corresponding positions of the disaster prevention door 100 and the wall via hinged connecting seats 420. The second electrically controlled push rod 410 can pull the disaster prevention door 100 to rotate after being energized, thereby controlling the opening or closing of the disaster prevention door 100. Edge sealing strips 120 are provided on the outer wall of the disaster prevention door 100 at the junctions with the upper frame 200, the base 300, and the side door frames. Side sealing strips 110 are connected to opposite sides of both disaster prevention door bodies 100. The door is set in a stepped shape, with two side sealing strips 110 interlocking. The edge sealing strip 120 mainly seals the edges of the disaster prevention door 100, the upper frame 200, the base 300, and the side frame to reduce the infiltration of smoke. The side sealing strip 110 mainly seals the gap between the two disaster prevention doors 100. The stepped design of the side sealing strip 110 is to stagger the butt joints after the disaster prevention door 100 is closed, thereby improving the sealing effect of the side sealing strip 110. The side sealing strip 110 and the edge sealing strip 120 can be made of high-temperature resistant rubber, such as fluororubber or fire-resistant rubber.

[0029] The usage process of this utility model is as follows: Those skilled in the art can assemble the device according to the above description, then connect all electrical equipment to an external power supply, connect the water inlet seat 210 and the drain pipe to an external water storage tank, and connect a controller for convenient operation. In daily use, the second electrically controlled push rod 410 can retract, thereby pulling the disaster prevention door 100 open from both sides. In the event of a fire, the controller inside the room will control the second electrically controlled push rod 410 to extend and close the disaster prevention door 100, sealing it. Then, the first electrically controlled push rod 230 will be de-energized. After de-energization, the first electrically controlled push rod 230 will lose its pulling force on the diversion pipe 220. The pull-down spring 250 will then pull the diversion pipe 220 downwards through elastic force. As the diversion pipe 220 moves downwards, it will push the water injection nozzle 26... The nozzle 260 is inserted into the water inlet 101 through the clearance hole, so that the bottom end of the nozzle 260 is inserted into the inner wall of the water inlet 101. When a fire occurs on the inside or outside of the fire door 100, the water is pumped through the inlet seat 210 to the diversion pipe 220 by the external water pump. The diversion pipe 220 will inject water into the heat exchange tank through the nozzle 260. When the water flows in the heat exchange tank, it can exchange heat with the fire door 100 to cool down the fire door 100 and prevent the fire door 100 from getting too hot and affecting the sealing effect of the side sealing strip 110 and the edge sealing strip 120. The water after heat exchange will flow into the return tank 310 through the drain hole at the bottom of the fire door 100, and then be discharged through the drain pipe connected to the side of the return tank 310 in conjunction with the water pump to ensure that the hot water can be recycled.

[0030] The above description is merely a preferred embodiment of this utility model. Any person skilled in the art may modify this utility model or modify it into an equivalent technical solution using the technical solutions described above. Therefore, any simple modifications or equivalent substitutions made based on the technical solutions of this utility model are within the scope of protection claimed by this utility model.

Claims

1. A civil air defense door that prevents fire smoke penetration, characterized in that: The application relates to a disaster prevention door body (100), the top end of the outer wall of the disaster prevention door body (100) is provided with a door body upper frame (200), the bottom end of the outer wall of the disaster prevention door body (100) is provided with a door body base (300), and the outer side of the disaster prevention door body (100) is provided with a sealing component for preventing fire disaster smoke from penetrating. The sealing component comprises a shunt pipe (220) arranged in the interior of the door body upper frame (200), the bottom end of the outer wall of the shunt pipe (220) is fixedly connected with water injection nozzles (260), and the top end of the outer wall of the disaster prevention door body (100) is provided with water injection openings (101) matched with the water injection nozzles (260).

2. The fire and smoke penetration resistant door of claim 1, wherein: The outer wall of the disaster prevention door body (100) is provided with side door frames for installation on both sides, the upper and lower ends of the side door frames are fixed to the outer wall of the opposite side of the door body upper frame (200) and the door body base (300), and the inner walls of both ends of the disaster prevention door body (100) are hingedly connected with the side door frames.

3. The fire and smoke penetration resistant door of claim 2, wherein: The interior of the disaster prevention door body (100) is provided with a heat exchange groove for water flow, the top end of the heat exchange groove is communicated with the bottom end of the water injection opening (101), and the bottom end of the outer wall of the disaster prevention door body (100) is provided with a water outlet hole for water delivery at a position corresponding to the heat exchange groove.

4. The fire and smoke penetration resistant door of claim 1, wherein: The top end of the outer wall of the disaster prevention door body (100) is provided with a water inlet seat (210) for water supplement, the bottom end of the inner wall of the water inlet seat (210) is communicated with the top end of the inner wall of the shunt pipe (220) through a water delivery hose, and the bottom end of the inner wall of the shunt pipe (220) is uniformly arranged with a plurality of water injection nozzles (260) in a strip array mode.

5. The fire and smoke penetration resistant door of claim 4, wherein: The bottom end of the inner wall of the door body upper frame (200) is provided with avoiding holes corresponding to the water injection nozzles (260) at positions, the door body upper frame (200) is provided with the avoiding holes corresponding to the water injection openings (101), and the inner wall of the door body upper frame (200) is fixed with guide rods (240) on both sides of the upper and lower ends.

6. The fire and smoke penetration resistant door of claim 5, wherein: The outer wall of the shunt pipe (220) is provided with guide through holes corresponding to the guide rods (240) at both ends, the shunt pipe (220) is slidably connected with the outer wall of the guide rods (240) through the guide through holes, and the end of the shunt pipe (220) close to the guide rods (240) is sealingly arranged.

7. The fire and smoke penetration resistant door of claim 6, wherein: The top end of the outer wall of the shunt pipe (220) is fixed with first electric control push rods (230), the upper ends of the first electric control push rods (230) are fixed to the top end of the inner wall of the door body upper frame (200) at corresponding positions, the bottom end of the outer wall of the shunt pipe (220) is fixed with a downward spring (250), the downward spring (250) is arranged between the water injection nozzles (260), and the bottom end of the downward spring (250) is fixed to the bottom end of the inner wall of the door body upper frame (200).

8. The fire and smoke penetration resistant door of claim 7, wherein: The inner wall bottom end of the door body base (300) is provided with a backflow groove (310) corresponding to the drain hole, the inner wall side of the backflow groove (310) is communicated with a drain pipe, the outer wall front end of the disaster prevention door body (100) is provided with a door opening and closing mechanism (400) on both sides, the door opening and closing mechanism (400) comprises a second electric control push rod (410), the both ends of the second electric control push rod (410) are connected with the corresponding positions of the disaster prevention door body (100) and the wall body through hinged connecting seats (420).

9. The fire and smoke penetration resistant door of claim 1, wherein: The outer wall of the disaster prevention door body (100) is provided with an edge sealing strip (120) for sealing at the joint with the door body upper frame (200), the door body base (300) and the side door frame, the opposite sides of the two disaster prevention door bodies (100) are connected with side sealing strips (110) for sealing, the side sealing strips (110) are arranged in a stepped manner, and the two side sealing strips (110) are engaged with each other.

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