Flame-retardant smoke-blocking fire-fighting fireproof door

Abstract

The utility model relates to a flame-retardant smoke-blocking fire-fighting fireproof door in the technical field of fireproof doors. A sealing plate used for blocking smoke is installed at the lower end of the fireproof door, a first connecting rod is installed at the upper end of the middle of the sealing plate, and an electric push rod used for controlling the sealing plate to move up and down is installed at the upper end of the first connecting rod. When a fire disaster occurs, a temperature sensor detects that the temperature rises, an electric push rod drives a first connecting rod to move downwards, then a sealing plate is driven to seal a gap in the lower end of the fireproof door, and the smoke blocking purpose is achieved; moreover, when a first connecting rod is downward, a gear block mounted at the upper end of the first connecting rod drives a gear to rotate, so that the gear synchronously drives a second connecting rod to open a valve, and compressed carbon dioxide drives BC dry powder to be conveyed into a spraying pipe through a conveying pipe and sprayed to the ground at the front end of the fireproof door through a spraying head; the situation that fire spreads near the fireproof door, the temperature of the fireproof door rises, and people cannot open the door to escape from the fire scene is avoided.

Description

Technical Field

[0001] The utility model belongs to the technical field of fire doors, and particularly relates to a flame-retardant and smoke-blocking fire door for fire protection. Background Art

[0002] A fire door for fire protection refers to a door that can meet the requirements of fire resistance stability and heat insulation for a certain period of time, and has the functions of preventing the spread of fire, delaying the spread of fire and withstanding fire for a certain period of time. When installing a fire door, a door pocket for limiting the position of the fire door will be installed synchronously, and sealing strips will be installed at the upper end and the left and right ends of the door pocket, so that smoke is not easily emitted from the upper end and the left and right ends of the fire door.

[0003] For example, a fire door with a pinch protection function disclosed in Chinese Patent Application No. CN202220244830.9, the specific content of which is: including a door frame, one side of the inner cavity of the door frame is connected with a fire door body through a hinge, anti-pinch grooves are symmetrically opened on both sides of the fire door body, and a windproof cotton strip is fixedly arranged in the inner cavity of the anti-pinch groove. The technical problem it has is that in order to facilitate the closing of the fire door, there is a gap between the bottom of the fire door and the ground, and smoke is easily emitted from the gap at the bottom of the fire door. Content of the Utility Model

[0004] The utility model provides a flame-retardant and smoke-blocking fire door for fire protection to solve the problem that smoke in the prior art is easily emitted from the gap at the bottom of the fire door.

[0005] To achieve the above purpose, the utility model provides the following technical solutions:

[0006] A flame-retardant and smoke-blocking fire door for fire protection includes a fire door, a sealing plate for blocking smoke is installed at the lower end of the fire door, a first connecting rod is installed at the upper end of the middle part of the sealing plate, and an electric push rod for controlling the up and down movement of the sealing plate is installed at the upper end of the first connecting rod. A flame retardant tank for flame retardant is installed inside the fire door, and BC dry powder and compressed carbon dioxide are filled inside the flame retardant tank. A delivery pipe is installed at the lower end of the flame retardant tank, a spray pipe is installed at the lower end of the delivery pipe, a valve is installed in the middle of the delivery pipe, and a second connecting rod for facilitating the opening and closing of the valve in cooperation with the first connecting rod is installed at one end of the valve.

[0007] Further, a limiting groove for limiting the sealing plate is opened at the lower end of the fire door, limiting rods are installed at the left and right ends of the limiting groove, and a temperature sensor is installed in the middle of the fire door.

[0008] Further, a fireproof rubber strip is installed at the lower end of the sealing plate.

[0009] Further, a fixed pressing block is installed at the lower end of the first connecting rod, and a spring for cooperating with the fixed pressing block to control the reset of the sealing plate is installed at the lower end of the first connecting rod.

[0010] Further, a toothed block is installed at the upper end of the first connecting rod, and a limiting block is installed at the top end of the first connecting rod.

[0011] Further, a gear for cooperating with the toothed block to control the rotation of the second connecting rod is installed at one end of the second connecting rod, and a plurality of nozzles are installed in the middle of the spray pipe.

[0012] Further, an internally threaded pipe is installed at the upper end of the limiting block.

[0013] Further, a telescopic rod is installed at the lower end of the electric push rod, and an external thread is machined on the outer wall of the lower end of the telescopic rod.

[0014] The beneficial effects of the present utility model: When a fire occurs, the temperature sensor detects an increase in temperature, drives the first connecting rod to move downward through the electric push rod, and then drives the sealing plate to close the gap at the lower end of the fire door to achieve the purpose of blocking smoke. When the first connecting rod moves downward, the toothed block installed at the upper end of the first connecting rod drives the gear to rotate, so that the gear synchronously drives the second connecting rod to open the valve. The compressed carbon dioxide drives the BC dry powder to be transported to the inside of the spray pipe through the delivery pipe and is sprayed to the ground in front of the fire door through the nozzles, avoiding the spread of the fire to the vicinity of the fire door and causing the temperature of the fire door to rise and making it inconvenient for people to open the door and escape from the fire scene. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is a schematic diagram of the overall structure of the present utility model.

[0016] Figure 2 is the present utility model Figure 1 enlarged view of part A.

[0017] Figure 3 is the present utility model Figure 1 enlarged view of part B.

[0018] Figure 4 is the present utility model Figure 1 enlarged view of part C.

[0019] Figure 5 is the present utility model Figure 1 enlarged view of part D.

[0020] Figure 6 is the present utility model Figure 1 enlarged view of part E.

[0021] In the figure: 100 - fire door, 110 - limiting groove, 111 - limiting rod, 112 - temperature sensor;

[0022] 200 - Sealing plate, 210 - Connecting rod one, 211 - Fixed pressing block, 212 - Tooth block, 213 - Limit block, 220 - Fireproof rubber strip, 230 - Spring, 240 - Internal thread tube, 250 - Electric push rod, 251 - Telescopic rod, 252 - External thread;

[0023] 300 - Flame retardant box, 310 - BC dry powder, 320 - Compressed carbon dioxide, 330 - Delivery pipe, 331 - Valve, 332 - Connecting rod two, 333 - Gear, 340 - Spray pipe, 341 - Nozzle. Detailed implementation mode

[0024] Please refer to Figures 1 to 6 , the present utility model provides a flame - retardant and smoke - resistant fire - proof door, including a fire - proof door 100, a sealing plate 200 and a flame retardant box 300. When a fire occurs, the temperature sensor 112 detects an increase in temperature, drives the connecting rod one 210 to move downward through the electric push rod 250, and then drives the sealing plate 200 to seal the gap at the lower end of the fire - proof door 100, achieving the purpose of smoke prevention. When the connecting rod one 210 moves downward, the tooth block 212 installed at the upper end of the connecting rod one 210 drives the gear 333 to rotate, so that the gear 333 synchronously drives the connecting rod two 332 to open the valve 331. The compressed carbon dioxide 320 drives the BC dry powder 310 to be transported through the delivery pipe 330 to the inside of the spray pipe 340, and is sprayed to the ground in front of the fire - proof door 100 through the nozzle 341, avoiding the spread of the fire to the vicinity of the fire - proof door 100, causing the temperature of the fire - proof door 100 to rise and making it inconvenient for people to open the door and escape from the fire scene.

[0025] A limit groove 110 for limiting the sealing plate 200 is opened at the lower end of the fire - proof door 100. Limit rods 111 for limiting the sealing plate 200 are fixedly installed at the left and right ends of the limit groove 110. A temperature sensor 112 is installed in the middle of the fire - proof door 100. When the temperature sensor 112 monitors that the temperature rises to a predetermined threshold, it controls the electric push rod 250 to start. The temperature sensor 112 and the electric push rod 250 can be connected to an external power supply through wires, and a storage battery can also be set inside the fire - proof door 100 to solve the power supply problem of the temperature sensor 112 and the electric push rod 250.

[0026] A sealing plate 200 for smoke prevention is installed at the lower end of the fire - proof door 100. A fireproof rubber strip 220 is installed at the lower end of the sealing plate 200 to prevent smoke from escaping. A connecting rod one 210 is fixedly installed at the upper middle part of the sealing plate 200. A fixed pressing block 211 is fixedly installed at the lower end of the connecting rod one 210. A plurality of tooth blocks 212 are fixedly installed at the upper end of the connecting rod one 210. A limit block 213 is fixedly installed at the top end of the connecting rod one 210.

[0027] A spring 230 for cooperating with the fixed pressing block 211 to control the reset of the sealing plate 200 is installed at the lower end of the first connecting rod 210, and the spring 230 abuts against the lower end surface of the fixed pressing block 211. By pushing the fixed pressing block 211 upward through the spring 230, the sealing plate 200 can be located in the cavity of the limiting groove 110 without starting the electric push rod 250, thus avoiding waste of electricity.

[0028] An internally threaded tube 240 is movably installed at the upper end of the limiting block 213. An electric push rod 250 for controlling the up-and-down movement of the sealing plate 200 is installed at the upper end of the first connecting rod 210, and the electric push rod 250 is located at the upper end of the internally threaded tube 240. A telescopic rod 251 is installed at the lower end of the electric push rod 250, and an external thread 252 is machined on the outer wall of the lower end of the telescopic rod 251. By screwing the internally threaded tube 240 onto the lower end of the external thread 252, the internally threaded tube 240 connects the first connecting rod 210 to the lower end of the electric push rod 250, facilitating the electric push rod 250 to drive the first connecting rod 210 to move up and down synchronously when controlling the telescopic rod 251 to move up and down, and further driving the sealing plate 200 to move up and down.

[0029] A flame retardant agent tank 300 for flame retardance is installed inside the fire door 100, and BC dry powder 310 and compressed carbon dioxide 320 are filled inside the flame retardant agent tank 300. A delivery pipe 330 is fixedly installed at the lower end of the flame retardant agent tank 300, a valve 331 is installed in the middle of the delivery pipe 330, a spray pipe 340 is fixedly installed at the lower end of the delivery pipe 330, and a plurality of nozzles 341 for spraying BC dry powder 310 are installed in the middle of the spray pipe 340.

[0030] One end of the valve 331 is installed with a second connecting rod 332 for facilitating the opening and closing of the valve 331 in cooperation with the first connecting rod 210. A gear 333 for cooperating with the tooth block 212 to control the rotation of the second connecting rod 332 is fixedly installed at the end of the second connecting rod 332 close to the first connecting rod 210. When the first connecting rod 210 moves downward, the tooth block 212 cooperates with the gear 333 to control the rotation of the second connecting rod 332, thereby driving the valve 331 to open, facilitating the BC dry powder 310 to be sprayed out through the delivery pipe 330, the spray pipe 340 and the nozzles 341 to prevent the fire from spreading to the vicinity of the fire door 100.

Claims

1. A flame retardant and smoke retardant fire door, comprising a fire door (100), characterized in that: A sealing plate (200) for blocking smoke is installed at the lower end of the fireproof door (100), a connecting rod 1 (210) is installed at the upper end of the middle part of the sealing plate (200), and an electric push rod (250) for controlling the sealing plate (200) to move up and down is installed at the upper end of the connecting rod 1 (210); a flame retardant box (300) for flame retardancy is installed inside the fireproof door (100), and the interior of the flame retardant box (300) is filled with BC dry powder (310) and compressed carbon dioxide (320); a delivery pipe (330) is installed at the lower end of the flame retardant box (300), a nozzle (340) is installed at the lower end of the delivery pipe (330), a valve (331) is installed in the middle of the delivery pipe (330), and a connecting rod 2 (332) is installed at one end of the valve (331) for cooperating with the connecting rod 1 (210) to open and close the valve (331) 2. The flame retardant and smoke resistant fire door according to claim 1, characterized in that: A limiting groove (110) for limiting the sealing plate (200) is provided at the lower end of the fireproof door (100), limiting rods (111) are installed at the left and right ends of the limiting groove (110), and a temperature sensor (112) is installed in the middle of the fireproof door (100).

3. The flame retardant and smoke resistant fire door according to claim 1, characterized in that: A fireproof rubber strip (220) is installed at the lower end of the sealing plate (200).

4. The flame retardant and smoke resistant fire door according to claim 1, characterized in that: A fixed pressure block (211) is installed at the lower end of the connecting rod 1 (210), and a spring (230) is installed at the lower end of the connecting rod 1 (210) for cooperating with the fixed pressure block (211) to control the return of the sealing plate (200).

5. The flame retardant and smoke resistant fire door according to claim 1, characterized in that: A tooth block (212) is installed at the upper end of the connecting rod one (210), and a limit block (213) is installed at the top end of the connecting rod one (210).

6. The flame retardant and smoke resistant fire door according to claim 5, characterized in that: One end of the second connecting rod (332) is provided with a gear (333) for cooperating with the gear block (212) to control the rotation of the second connecting rod (332), and a plurality of nozzles (341) are provided in the middle of the nozzle (340).

7. The flame retardant and smoke resistant fire door according to claim 5, characterized in that: An internally threaded tube (240) is installed at the upper end of the limiting block (213).

8. The flame retardant and smoke resistant fire door according to claim 1, characterized in that: A telescopic rod (251) is installed at the lower end of the electric push rod (250), and an outer wall of the lower end of the telescopic rod (251) is processed with an external thread (252).

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