Normally closed fireproof door

Abstract

The utility model discloses a normally closed type fireproof door which comprises a door frame, an installation cavity is formed in the top end of the door frame, a water conveying pipe is arranged on the inner wall of the installation cavity, an electromagnetic valve is arranged at one end of the water conveying pipe, a plurality of receding grooves are formed in the outer wall of the top face of the door frame, and the receding grooves are linearly arranged at equal intervals. The inner wall of the avoiding groove is rotationally connected with a sprayer, the input end of the sprayer communicates with a water conveying pipe through a hose, the inner wall of the door frame is rotationally connected with a door body, a fixing box is fixed to the outer wall of the top end of the door body, a smoke sensor is embedded in the outer wall of the fixing box, and a warning lamp and a buzzer are arranged on the outer wall of the fixing box. Through the arrangement of the water conveying pipe, the electromagnetic valve and the spray head, when a fire disaster occurs, the electromagnetic valve is opened, water in the fire-fighting pipeline is input along the water conveying pipe and sprayed out from the spray head to extinguish fire, flames are prevented from getting close to the fireproof door, and the fireproof door is prevented from being heated and deformed by the flames.

Description

Technical Field

[0001] The utility model relates to the technical field of fireproof doors, in particular to a normally closed fireproof door. Background Art

[0002] Fire doors are doors that are fire-resistant and heat-insulating and are distributed in buildings. Normally closed fire doors are a type of fire door. Normally closed fire doors are usually closed to prevent the spread of fire and toxic smoke.

[0003] After searching, the Chinese patent publication number CN218376190U discloses a normally closed building insulated fire door, including a door body and a swing door, the door body includes an outer door frame, an inner ring frame and an insert ring, the outer door frame is fixed to the wall by bolts, the inner ring frame is welded to the inner side wall of the outer door frame, an installation groove is opened on the outer side of the inner ring frame, and a plurality of push columns are welded in a ring on one side of the insert ring close to the inner ring frame.

[0004] This patent embeds an insert ring inside the inner ring frame. When a fire occurs, the fire door is in a closed state. At this time, the push column is pressed so that half of the insert ring is stuck in the annular groove of the swing door. The only path for smoke to diffuse is through the gap between the swing door and the inner ring frame. The use of the insert ring can enhance the sealing between the swing door and the inner ring frame. However, when a fire occurs, the high temperature generated by the flame burns the fire door, and the fire door is deformed by the high temperature and loses its fireproof effect. Utility Model Content

[0005] The utility model aims to solve the shortcomings in the prior art and proposes a normally closed fireproof door.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] A normally closed fire door comprises a door frame, a mounting cavity is arranged at the top of the door frame, a water pipe is arranged on the inner wall of the mounting cavity, a solenoid valve is arranged at one end of the water pipe, a plurality of avoidance grooves are opened on the outer wall of the top surface of the door frame, the avoidance grooves are arranged in a straight line and equidistantly, a nozzle is rotatably connected to the inner wall of the avoidance groove, and the input end of the nozzle is connected to the water pipe through a hose.

[0008] As a further solution of the utility model: the inner wall of the door frame is rotatably connected to the door body, and an automatic resetting device is arranged between the door frame and the door body.

[0009] As a further solution of the utility model: a mounting box is provided at one end of the water pipe located inside the mounting cavity near the solenoid valve, the inner wall of the mounting box is rotatably connected to a rotating shaft, the outer wall of the rotating shaft is fixed with paddles, and the paddles are equidistantly arranged.

[0010] As a further solution of the utility model: one end of the rotating shaft is connected to a rotating disk, a push rod is fixed to an outer wall of one side of the rotating disk, and a moving ring is slidably connected to the outer wall of the pushing rod, and the moving ring is rectangular.

[0011] As a further solution of the utility model: a connecting rod is fixed to the outer wall of one side of the movable ring, a sliding block is fixed to the outer wall of one side of the connecting rod, a connecting rod is rotatably connected to the outer wall of the bottom surface of the connecting rod, and the other end of the connecting rod is rotatably connected to the nozzle.

[0012] As a further solution of the utility model: a connecting plate is fixed to the inner wall of the top surface of the installation cavity, and a sliding groove that slidably cooperates with the slider is opened on the outer wall of one side of the bottom end of the connecting plate.

[0013] As a further solution of the utility model: a fixing box is fixed to the outer wall at the top of the door body, a smoke sensor is embedded in the outer wall of the fixing box, and a warning light and a buzzer are arranged on the outer wall of the fixing box.

[0014] As a further solution of the utility model: a battery is arranged inside the fixing box, and the smoke sensor is electrically connected to the warning light, the buzzer and the solenoid valve.

[0015] Compared with the prior art, the utility model provides a normally closed fire door, which has the following beneficial effects:

[0016] The utility model is provided with a water pipe, a solenoid valve and a nozzle. When a fire occurs, the solenoid valve opens, and water in the fire-fighting pipe is input along the water pipe and sprayed out from the nozzle to extinguish the fire, thereby preventing the flame from approaching the fire door and preventing the fire door from being deformed by heat.

[0017] By providing an installation box, a connecting plate, a paddle, a rotating shaft, a rotating disk, a pushing rod, a moving ring, a connecting rod, a connecting rod and a slider, the flowing water drives the rotating shaft to rotate through the paddle, drives the moving ring to move through the pushing rod on the rotating disk, and makes the connecting rod reciprocate left and right through the cooperation of the slider and the connecting plate, driving the sprinkler to rotate inside the avoidance groove, thereby expanding the spraying range of the sprinkler;

[0018] By setting up warning lights and buzzers, sound and light signals are issued in case of fire, providing direction guidance for people to find safe passages.

[0019] The parts not involved in the device are the same as those in the prior art or can be implemented by using the prior art. The utility model has a simple structure and is easy to operate. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the overall structure of the utility model.

[0021] Figure 2This is a schematic diagram of the connection structure between the nozzle and the door frame of the utility model.

[0022] Figure 3 It is a schematic diagram of the internal structure of the utility model.

[0023] Figure 4 It is a schematic diagram of the internal structure of the installation box of the utility model.

[0024] Figure 5 This is a schematic diagram of the connection structure between the blade and the rotating disk of the utility model.

[0025] Figure 6 It is a schematic diagram of the structure between the turntable and the linkage rod of the utility model.

[0026] Figure 7 It is a schematic diagram of the connection structure between the connecting rod and the installation cavity of the utility model.

[0027] In the figure: 1. door frame; 2. door body; 3. water pipe; 4. fixing box; 5. smoke sensor; 6. warning light; 7. buzzer; 8. solenoid valve; 9. nozzle; 10. avoidance groove; 11. installation cavity; 12. installation box; 13. connecting plate; 14. paddle; 15. rotating shaft; 16. turntable; 17. pushing rod; 18. moving ring; 19. connecting rod; 20. connecting rod; 21. slider. DETAILED DESCRIPTION

[0028] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0029] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention. Embodiment 1:

[0030] A normally closed fire door, such as Figures 1 to 7As shown, it includes a door frame 1, the inner wall of the door frame 1 is rotatably connected to the door body 2, and an automatic resetting device is arranged between the door frame 1 and the door body 2. The automatic resetting device can adopt the same structure of the door closer device and the first rotating arm and the second rotating arm combination of the utility model patent with Chinese patent publication number CN209539073U, so it is not repeated here. The top of the door frame 1 is provided with an installation cavity 11, and the inner wall of the installation cavity 11 is provided with a water pipe 3. One end of the water pipe 3 is connected to the building fire water supply pipeline, and one end of the water pipe 3 is provided with a solenoid valve 8. A plurality of avoidance grooves 10 are opened on the outer wall of the top surface of the door frame 1, and the avoidance grooves 10 are arranged in a straight line and equidistantly. The inner wall of the avoidance groove 10 is rotatably connected to a nozzle 9, and the input end of the nozzle 9 is connected to the water pipe 3 through a hose. The water pipe 3 is located at the installation cavity 11. A mounting box 12 is provided in the inner part of the cavity 11 near one end of the solenoid valve 8, and a rotating shaft 15 is rotatably connected to the inner wall of the mounting box 12, and a paddle 14 is fixed to the outer wall of the rotating shaft 15, and the paddles 14 are arranged equidistantly, and a turntable 16 is connected to one end of the rotating shaft 15, and a push rod 17 is fixed to the outer wall of one side of the turntable 16, and a moving ring 18 is slidably connected to the outer wall of the push rod 17, and the moving ring 18 is rectangular, and a connecting rod 19 is fixed to the outer wall of one side of the moving ring 18, and a connecting rod 20 is rotatably connected to the outer wall of the bottom surface of the connecting rod 19, and the other end of the connecting rod 20 is rotatably connected to the nozzle 9, and a connecting plate 13 is fixed to the inner wall of the top surface of the mounting cavity 11, and a slider 21 is fixed to the outer wall of one side of the connecting rod 19, and a sliding groove that slidably cooperates with the slider 21 is opened on the outer wall of one side of the bottom end of the connecting plate 13.

[0031] When a fire occurs, the solenoid valve 8 opens, allowing the water in the fire-fighting pipe to be input along the water pipe 3 and sprayed out from the nozzle 9 to extinguish the fire and prevent the flame from approaching the fire door. At the same time, the flowing water drives the rotating shaft 15 to rotate through the paddle 14, and drives the moving ring 18 to move through the push rod 17 on the turntable 16, so that the linkage rod 19 reciprocates left and right through the cooperation of the slider 21 and the connecting plate 13, driving the nozzle 9 to rotate inside the avoidance groove 10, thereby expanding the spraying range of the nozzle 9.

[0032] By providing the water pipe 3, the solenoid valve 8 and the nozzle 9, when a fire occurs, the solenoid valve 8 opens, allowing the water in the fire-fighting pipe to be input along the water pipe 3 and sprayed out from the nozzle 9 to extinguish the fire, thereby preventing the flame from approaching the fire door and preventing the flame from causing the fire door to deform due to heat.

[0033] By arranging the installation box 12, the connecting plate 13, the paddle 14, the rotating shaft 15, the rotating disk 16, the pushing rod 17, the moving ring 18, the connecting rod 19, the connecting rod 20 and the slider 21, the flowing water drives the rotating shaft 15 to rotate through the paddle 14, drives the moving ring 18 to move through the pushing rod 17 on the rotating disk 16, and makes the connecting rod 19 reciprocate left and right through the cooperation of the slider 21 and the connecting plate 13, drives the nozzle 9 to rotate inside the avoidance groove 10, and expands the spraying range of the nozzle 9. Embodiment 2:

[0034] A normally closed fire door. This embodiment is based on the embodiment 1, and the following improvements are made: Figure 1 As shown, a fixing box 4 is fixed to the outer wall at the top of the door body 2, a smoke sensor 5 is embedded in the outer wall of the fixing box 4, a warning light 6 and a buzzer 7 are arranged on the outer wall of the fixing box 4, a battery is arranged inside the fixing box 4, and the smoke sensor 5 is electrically connected to the warning light 6, the buzzer 7 and the solenoid valve 8.

[0035] When the smoke sensor 5 detects smoke generated by a fire, the solenoid valve 8 is controlled to open, and at the same time the warning light 6 and the buzzer 7 work to emit sound and light signals, providing direction guidance for people to find a safe passage.

[0036] By arranging the warning light 6 and the buzzer 7, sound and light signals are emitted in case of fire, providing direction guidance for people, so that people can find a safe passage easily.

[0037] Working principle: When the smoke sensor 5 detects the smoke generated by the fire, the solenoid valve 8 opens, allowing the water in the fire-fighting pipe to be input along the water pipe 3 and sprayed out from the nozzle 9 to extinguish the fire and prevent the flame from approaching the fire door. At the same time, the flowing water drives the rotating shaft 15 to rotate through the paddle 14, and drives the moving ring 18 to move through the push rod 17 on the turntable 16, so that the linkage rod 19 reciprocates left and right through the cooperation of the slider 21 and the connecting plate 13, driving the nozzle 9 to rotate inside the avoidance groove 10, thereby expanding the spraying range of the nozzle 9; at the same time, the warning light 6 and the buzzer 7 work, emitting sound and light signals, providing direction guidance for people, so that people can find a safe passage.

[0038] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A normally closed fire door, comprising a door frame (1), characterized in that: The top of the door frame (1) is provided with an installation cavity (11), the inner wall of the installation cavity (11) is provided with a water pipe (3), one end of the water pipe (3) is provided with a solenoid valve (8), the outer wall of the top surface of the door frame (1) is provided with a plurality of avoidance grooves (10), the avoidance grooves (10) are arranged in a straight line and at equal intervals, the inner wall of the avoidance groove (10) is rotatably connected to a nozzle (9), and the input end of the nozzle (9) is connected to the water pipe (3) through a hose.

2. A normally closed fire door according to claim 1, characterized in that: The inner wall of the door frame (1) is rotatably connected to the door body (2), and an automatic resetting device is provided between the door frame (1) and the door body (2).

3. A normally closed fire door according to claim 1, characterized in that: A mounting box (12) is provided at one end of the water delivery pipe (3) located inside the mounting cavity (11) and close to the solenoid valve (8); a rotating shaft (15) is rotatably connected to the inner wall of the mounting box (12); paddle blades (14) are fixed to the outer wall of the rotating shaft (15); and the paddle blades (14) are arranged at equal distances.

4. A normally closed fire door according to claim 3, characterized in that: One end of the rotating shaft (15) is connected to a rotating disk (16), a push rod (17) is fixed to an outer wall of one side of the rotating disk (16), and a moving ring (18) is slidably connected to the outer wall of the pushing rod (17), and the moving ring (18) is rectangular.

5. A normally closed fire door according to claim 4, characterized in that: A linkage rod (19) is fixed to an outer wall on one side of the movable ring (18), a slider (21) is fixed to an outer wall on one side of the linkage rod (19), a connecting rod (20) is rotatably connected to an outer wall on the bottom surface of the linkage rod (19), and the other end of the connecting rod (20) is rotatably connected to the spray head (9).

6. A normally closed fire door according to claim 1, characterized in that: A connecting plate (13) is fixed to the inner wall of the top surface of the installation cavity (11), and a sliding groove slidably matched with the sliding block (21) is provided on the outer wall of one side of the bottom end of the connecting plate (13).

7. A normally closed fire door according to claim 2, characterized in that: A fixing box (4) is fixed to the outer wall at the top end of the door body (2), a smoke sensor (5) is embedded in the outer wall of the fixing box (4), and a warning light (6) and a buzzer (7) are provided on the outer wall of the fixing box (4).

8. A normally closed fire door according to claim 7, characterized in that: A storage battery is arranged inside the fixing box (4), and the smoke sensor (5) is electrically connected to the warning light (6), the buzzer (7) and the solenoid valve (8).

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