Smoke exhaust device for fire engineering

Abstract

The utility model provides a smoke exhaust device for fire engineering, which comprises a smoke pipe, one end of the smoke pipe is provided with a smoke exhaust port, a baffle is arranged in the smoke exhaust port, a plurality of elastic telescopic rods are arranged between the baffle and the inner wall of the smoke exhaust port, the elastic telescopic rods are clamped and fixed in the smoke exhaust port, a limiting block is arranged in the smoke exhaust port, the limiting block corresponds to the baffle, and the baffle is arranged in the smoke exhaust port. An exhaust fan is in sliding fit in the smoke pipe. According to the exhaust fan, the elastic telescopic rod is installed between the baffle and the inner wall of the smoke outlet, the baffle can be jacked up through air pressure after the exhaust fan is damaged, smoke exhaust in fire disasters cannot be affected, the baffle can be completely jacked open when the air pressure is large, the smoke exhaust speed is increased, the baffle can be detached, and the exhaust fan is convenient to use. Soot on the baffle can be conveniently cleaned, and the exhaust fan can be conveniently maintained.

Description

Technical Field

[0001] The utility model relates to the technical field of smoke exhaust devices, in particular to a smoke exhaust device for fire protection engineering. Background Art

[0002] In fire protection engineering, the smoke exhaust system is a very important component. It is the hub of indoor and outdoor air circulation and mainly plays the role of discharging indoor smoke to the outside. For example, the patent with publication number CN217737441U discloses a fire protection engineering smoke exhaust device, including a smoke exhaust pipe and a fan located in the smoke exhaust pipe, wherein a blocking block close to one end of the indoor room is arranged in the smoke exhaust pipe, and the device arranges a blocking block in the end of the ventilation pipe close to the indoor room, and the blocking block and the ventilation pipe axially elastically slide together, and a ventilation ring that cooperates with the blocking block is arranged at the end of the ventilation pipe located in the indoor room, and a wind drive plate connected to the blocking block is arranged at the outdoor end of the ventilation pipe. When the fan in the ventilation pipe is started, the wind drive plate will be blown outward to separate the blocking block and the ventilation ring. At this time, the ventilation pipe connects indoor and outdoor. When the fan stops, the ventilation pipe is closed to prevent indoor and outdoor air circulation. However, the device relies on the fan to blow the wind drive plate to drive the ventilation pipe to open. When a fire occurs, the fan may be damaged due to the high temperature, resulting in failure to blow air, thereby affecting smoke exhaust.

[0003] To this end, the utility model provides a smoke exhaust device for fire protection engineering. Utility Model Content

[0004] In view of the deficiencies in the prior art, the purpose of the utility model is to provide a smoke exhaust device for fire protection engineering, so as to solve the problems raised in the above-mentioned background technology. The utility model can lift up the baffle by air pressure after the exhaust fan is damaged, so as not to affect the smoke exhaust during a fire, and can completely open the baffle when the air pressure is high, so as to speed up the smoke exhaust. The baffle can also be removed to facilitate the cleaning of the cigarette ash on the baffle and the maintenance of the exhaust fan.

[0005] In order to achieve the above-mentioned purpose, the utility model is implemented through the following technical scheme: a smoke exhaust device for fire protection engineering, including a smoke pipe, a smoke exhaust port is opened at one end of the smoke pipe, a baffle is installed in the smoke exhaust port, a plurality of elastic telescopic rods are installed between the baffle and the inner wall of the smoke exhaust port, the elastic telescopic rods are clamped and fixed in the smoke exhaust port, a limit block is installed in the smoke exhaust port, the limit block corresponds to the baffle, and an exhaust fan is slidably matched in the smoke pipe.

[0006] Furthermore, the smoke pipe is sheathed with heat-insulating cotton around its sides.

[0007] Furthermore, the smoke exhaust port is an L-shaped structure, the limiting block is a circular structure, and the limiting block is fixed in the smoke exhaust port.

[0008] Furthermore, the baffle is located above the limiting block, and a smoke exhaust channel is provided between the baffle and the side wall of the smoke exhaust port.

[0009] Furthermore, the elastic telescopic rod includes a first rod body and a second rod body, the first rod body is slidably fitted in the second rod body, and a spring is fixed between the first rod body and the second rod body.

[0010] Furthermore, bolts are installed between the first rod body and the baffle plate, and the first rod body and the baffle plate are fixedly connected by the bolts.

[0011] Furthermore, a clamping block is fixed at the end of the second rod body, and a clamping groove is provided in the smoke exhaust port, and the clamping groove corresponds to the clamping block.

[0012] Furthermore, a plurality of slide rails are fixed in the smoke duct, a mounting frame is installed in the smoke duct, the mounting frame is slidably connected to the slide rails, and the mounting frame is fixedly connected to the exhaust fan.

[0013] Beneficial effects of the utility model: The utility model is a smoke exhaust device for fire protection engineering, comprising a baffle, a smoke exhaust port, an elastic telescopic rod, and an exhaust fan.

[0014] An elastic telescopic rod is installed between the baffle and the inner wall of the smoke exhaust port. The baffle can be lifted up by air pressure when the exhaust fan is damaged, thereby not affecting smoke exhaust during a fire. The baffle can be completely opened when the air pressure is high, thereby speeding up the smoke exhaust. The baffle can also be removed to facilitate cleaning of cigarette ash on the baffle and maintenance of the exhaust fan. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the overall assembly of a smoke exhaust device for fire protection engineering of the utility model;

[0016] Figure 2 This is a schematic diagram of the overall assembly cross-sectional structure of a smoke exhaust device for fire protection engineering of the utility model;

[0017] Figure 3 for Figure 2 Schematic diagram at A in the middle;

[0018] Figure 4 This is a schematic diagram of the assembly three-dimensional structure of an elastic telescopic rod in a smoke exhaust device for fire engineering of the utility model;

[0019] In the figure: 1. smoke pipe; 2. thermal insulation cotton; 3. exhaust fan; 4. smoke exhaust port; 5. baffle; 6. slide rail; 7. mounting frame; 8. elastic telescopic rod; 9. first rod body; 10. second rod body; 11. threaded groove; 12. clamping block; 13. clamping groove; 14. bolt; 15. limit block; 16. spring. DETAILED DESCRIPTION

[0020] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further described below in conjunction with specific implementation methods.

[0021] See also Figures 1 to 4 The utility model provides a technical solution: a smoke exhaust device for fire protection engineering, including a smoke pipe 1, a smoke exhaust port 4 is opened at one end of the smoke pipe 1, a baffle 5 is arranged inside the smoke exhaust port 4, a plurality of elastic telescopic rods 8 are arranged between the baffle 5 and the inner wall of the smoke exhaust port 4, the elastic telescopic rods 8 are clamped and fixed in the smoke exhaust port 4, a limit block 15 is arranged in the smoke exhaust port 4, the limit block 15 corresponds to the baffle 5, and an exhaust fan 3 is slidably matched in the smoke pipe 1.

[0022] In this embodiment, a heat-insulating cotton 2 is provided around the smoke pipe 1 to keep the smoke pipe 1 warm and prevent the low temperature of the smoke pipe 1 from affecting the indoor environment in winter.

[0023] The smoke exhaust port 4 is an L-shaped structure, the limit block 15 is a circular structure, the limit block 15 is fixed in the smoke exhaust port 4, the baffle 5 is located above the limit block 15, and a smoke exhaust channel is provided between the baffle 5 and the side wall of the smoke exhaust port 4. The elastic telescopic rod 8 includes a first rod body 9 and a second rod body 10. The first rod body 9 is slidably fitted in the second rod body 10, and a spring 16 is fixed between the first rod body 9 and the second rod body 10. A bolt 14 is installed between the first rod body 9 and the baffle 5. A threaded groove 11 is provided in the first rod body 9, and the threaded groove 11 corresponds to the bolt 14. The first rod body 9 and the baffle 5 are fixedly connected by the bolt 14. A block 12 is fixed at the end of the second rod body 10. A slot 13 is provided in the smoke exhaust port 4, and the slot 13 corresponds to the block 12.

[0024] Specifically, when exhausting smoke on a daily basis, start the exhaust fan 3, the exhaust fan 3 can blow air to lift the baffle 5, a gap is generated between the baffle 5 and the limit block 15, the elastic telescopic rod 8 is stretched, and smoke can be exhausted. When smoke is not exhausted, the baffle 5 blocks the smoke exhaust port 4 to prevent external cold air or hot air from entering the room through the flue, and when exhausting smoke, the baffle 5 can also block the ash, thereby reducing the discharge of ash.

[0025] When a fire occurs, the air pressure in the smoke pipe 1 increases, so that the air pressure pushes up the baffle 5, a gap is generated between the baffle 5 and the limit block 15, and the elastic telescopic rod 8 is stretched, so that smoke can be exhausted. When the air pressure in the smoke pipe 1 is too high, the larger pressure pushes the baffle 5 upward, so that the baffle 5 is pushed out, the card slot 13 and the card block 12 lose the card connection relationship, and the smoke exhaust port 4 is fully opened, so that the efficiency of smoke exhaust can be improved.

[0026] A plurality of slide rails 6 are fixed in the smoke duct 1 . A mounting frame 7 is installed in the smoke duct 1 . The mounting frame 7 is slidably connected to the slide rails 6 . The mounting frame 7 is fixedly connected to the exhaust fan 3 .

[0027] Specifically, when the exhaust fan 3 needs to be repaired, the baffle 5 can be directly removed, and then the mounting frame 7 can be pulled upward to drive the exhaust fan 3 to move to the smoke exhaust port 4, thereby facilitating the disassembly and maintenance of the exhaust fan 3.

[0028] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A smoke exhaust device for fire protection engineering, comprising a smoke pipe (1), characterized in that: A smoke outlet (4) is provided at one end of the smoke pipe (1), a baffle plate (5) is provided inside the smoke outlet (4), a plurality of elastic telescopic rods (8) are arranged between the baffle plate (5) and the inner wall of the smoke outlet (4), the elastic telescopic rods (8) are clamped and fixed inside the smoke outlet (4), a limit block (15) is arranged inside the smoke outlet (4), the limit block (15) corresponds to the baffle plate (5), and an exhaust fan (3) is slidably fitted inside the smoke pipe (1).

2. A smoke exhaust device for fire protection engineering according to claim 1, characterized in that: The smoke pipe (1) is sheathed with heat-insulating cotton (2) around its circumference.

3. A smoke exhaust device for fire protection engineering according to claim 1, characterized in that: The smoke exhaust port (4) is an L-shaped structure, the limiting block (15) is a circular structure, and the limiting block (15) is fixed in the smoke exhaust port (4).

4. A smoke exhaust device for fire protection engineering according to claim 1, characterized in that: The baffle plate (5) is located above the limiting block (15), and a smoke exhaust passage is provided between the baffle plate (5) and the side wall of the smoke exhaust port (4).

5. A smoke exhaust device for fire protection engineering according to claim 1, characterized in that: The elastic telescopic rod (8) comprises a first rod body (9) and a second rod body (10); the first rod body (9) is slidably fitted in the second rod body (10), and a spring (16) is fixed between the first rod body (9) and the second rod body (10).

6. A smoke exhaust device for fire protection engineering according to claim 5, characterized in that: A bolt (14) is installed between the first rod body (9) and the baffle plate (5), and the first rod body (9) and the baffle plate (5) are fixedly connected by the bolt (14).

7. A smoke exhaust device for fire protection engineering according to claim 5, characterized in that: A clamping block (12) is fixed at the end of the second rod body (10), and a clamping groove (13) is provided in the smoke exhaust port (4), and the clamping groove (13) corresponds to the clamping block (12).

8. A smoke exhaust device for fire protection engineering according to claim 1, characterized in that: A plurality of slide rails (6) are fixed in the smoke pipe (1), a mounting frame (7) is installed in the smoke pipe (1), the mounting frame (7) is slidably connected to the slide rails (6), and the mounting frame (7) is fixedly connected to the exhaust fan (3).

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