Smoke exhaust device for fire fighting

Abstract

The smoke exhaust device comprises a flow guide pipe barrel, the two ends of the flow guide pipe barrel are both fixedly connected with concentric-square-shaped butt joint plates, a U-shaped groove is formed in the outer wall of the flow guide pipe barrel, the inner wall of the U-shaped groove is connected with a U-shaped plate in a sliding mode, and the inner wall of the U-shaped plate is fixedly connected with a plurality of supporting rods. And one ends of the multiple supporting rods are fixedly connected with the same motor, the outer wall of an output shaft of the motor is fixedly connected with an impeller, and the inner wall of the U-shaped plate is fixedly connected with a net cover. Through the arrangement of the concentric-square-shaped butt joint plate, the corrugated pipe, the concentric-square-shaped assembly plate and the assembly hole, the position of the flow guide pipe barrel is adjusted, installation is convenient, and airflow is guided; by arranging the U-shaped sealing plate, the threaded rod and the sealing strip, position fixation of the U-shaped sealing plate is relieved, the motor, the impeller and the mesh enclosure are completely taken out, the overall maintenance process can be rapidly completed, repeated disassembly and assembly are avoided, and efficiency is improved.

Description

Technical Field

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

[0002] After a fire occurs indoors in a building, the burning material produces a large amount of smoke. Smoke is composed of high-temperature gases, thick smoke and harmful components produced by combustion. Since smoke has buoyancy, it rises and spreads from the high point of the fire to the low point. At the same time, the harmful substances contained in the smoke will also spread to the surrounding areas through natural convection, diffusion and wind. The purpose of smoke exhaust is to reduce the harm of smoke to the human body, enable personnel to evacuate in time, improve the fire extinguishing effect, and reduce the spread of fire.

[0003] After searching, the patent document with publication number: CN218936382U discloses a smoke exhaust and cooling device for fire fighting, including a support seat, on which two support plates are relatively arranged; a support sleeve, which is rotatably connected to the two support plates, and the two ends of the support sleeve are respectively provided with a connecting head cover and a connecting tail cover, wherein the support sleeve, the connecting head cover, and the connecting tail cover are connected front and back; an air suction component, which includes: a support member, which is arranged in the support sleeve; a rotating shaft, which passes through the support member, and the rotating shaft is rotatably connected to the support member. The utility model is provided with fan blades, a rotating shaft and a power unit in the support sleeve. When it is necessary to exhaust smoke at the fire scene, the power unit drives the rotating shaft to rotate, and the fan blades are started at this time, so that the fan blades suck air to discharge smoke, thereby effectively reducing the dispersion of smoke into the escape passage, and effectively increasing the escape probability of the escapee.

[0004] Although the above device has solved some of the existing problems, it still has some shortcomings in actual use. The smoke exhaust device is only used after a fire occurs. In daily life, the motor and the mesh cover are not in a sealed state, and rust and dust accumulate on the motor. In subsequent use, the poor operating condition of the motor affects the exhaust effect. During maintenance, after the smoke exhaust pipe and the smoke exhaust device are fixedly connected, the smoke exhaust pipe and the outer casing of the smoke exhaust device need to be disassembled to maintain the internal motor, which makes the disassembly back and forth cumbersome. Therefore, we propose a smoke exhaust device for fire fighting to solve the above problems. Utility Model Content

[0005] The utility model aims to solve the shortcomings in the prior art and proposes a smoke exhaust device for fire fighting.

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

[0007] A smoke exhaust device for fire fighting, comprising a guide tube, both ends of the guide tube are fixedly connected with a return-shaped docking plate, the outer wall of the guide tube is provided with a U-shaped groove, the inner wall of the U-shaped groove is slidably connected with a U-shaped plate, the inner wall of the U-shaped plate is fixedly connected with a plurality of support rods, one end of the plurality of support rods is fixedly connected with the same motor, the outer wall of the motor output shaft is fixedly connected with an impeller, the inner wall of the U-shaped plate is fixedly connected with a mesh cover, the outer wall of the U-shaped plate is fixedly connected with a U-shaped sealing plate, and the outer wall of the U-shaped sealing plate is provided with a locking mechanism.

[0008] Preferably, the locking mechanism includes two threaded rods, and the outer wall of the U-shaped sealing plate is provided with four threaded holes, and the four threaded holes are threadedly connected to the outer walls of the two threaded rods in groups of two, and the outer walls of the threaded rods are threadedly connected with nuts, and the U-shaped sealing plate is squeezed against the outer wall of the guide tube by arranging the threaded rods and the nuts, thereby fixing the position of the U-shaped plate, and the threaded rods limit the upward position of the U-shaped sealing plate.

[0009] Preferably, the outer wall of the U-shaped docking plate is fixedly connected to a bellows, one end of the bellows is fixedly connected to a U-shaped assembly plate, and the U-shaped assembly plate is arranged to dock with an existing smoke exhaust pipe, a plurality of smoke inlets are provided on the smoke exhaust pipe, and the other end of the guide tube is located outdoors through the existing pipe.

[0010] Preferably, a plurality of assembly holes are evenly formed on the outer wall of the circular assembly plate.

[0011] Preferably, a plurality of brackets are fixedly connected to the bottom of the guide tube, and the guide tube is supported by arranging the plurality of brackets.

[0012] Preferably, a supporting seat is fixedly embedded on the outer wall of the mesh cover, and the supporting seat is rotatably connected to the impeller, and the supporting seat is provided to assist the impeller in stable rotation.

[0013] Preferably, a sealing strip is fixedly connected to the outer wall of the U-shaped sealing plate, and the outer wall of the sealing strip is pressed against the outer wall of the flow guide tube. The sealing strip is provided to increase the sealing performance between the U-shaped sealing plate and the flow guide tube.

[0014] Compared with the prior art, the advantages of the utility model are:

[0015] This solution realizes adjustment of the position of the guide tube by setting a circular docking plate, a bellows, a circular assembly plate and an assembly hole, which is convenient for installation and guides the airflow;

[0016] By setting a U-shaped sealing plate, threaded rods and sealing strips, the position of the U-shaped sealing plate is released, and the motor, impeller and mesh cover are completely taken out, the overall maintenance process can be completed quickly, avoiding disassembly and installation back and forth, and improving efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solution of the present invention, the drawings required for use in the description of the specific implementation methods will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0018] Figure 1 This is a three-dimensional structural diagram of a smoke exhaust device for fire fighting proposed by the utility model;

[0019] Figure 2 This is a cross-sectional structural diagram of a smoke exhaust device for fire fighting proposed by the utility model;

[0020] Figure 3 A smoke exhaust device for fire fighting proposed by the utility model Figure 2 A schematic diagram of the enlarged structure of part A in the figure.

[0021] In the figure: 1. guide tube; 2. circular docking plate; 3. bellows; 4. circular assembly plate; 5. assembly hole; 6. bracket; 7. U-shaped plate; 8. support rod; 9. motor; 10. impeller; 11. mesh cover; 12. supporting seat; 13. U-shaped sealing plate; 14. threaded rod; 15. sealing strip. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] Depend on Figure 1-Figure 3 As shown, it relates to a smoke exhaust device for fire fighting, including a guide tube 1, both ends of the guide tube 1 are fixedly connected with a circular docking plate 2, the outer wall of the circular docking plate 2 is fixedly connected with a bellows 3, the bellows 3 is made of stainless steel, and plays the role of guiding and adjusting the docking position, one end of the bellows 3 is fixedly connected with a circular assembly plate 4, the outer wall of the circular assembly plate 4 is evenly provided with a plurality of assembly holes 5, the smoke exhaust pipe is bolted to the plurality of assembly holes 5 on the circular assembly plate 4 to realize the diversion of smoke, and the bottom of the guide tube 1 is fixedly connected with a plurality of brackets 6.

[0024] A U-shaped groove is formed on the outer wall of the flow guide tube 1, a U-shaped plate 7 is slidably connected to the inner wall of the U-shaped groove, a plurality of support rods 8 are fixedly connected to the inner wall of the U-shaped plate 7, one end of the plurality of support rods 8 is fixedly connected to the same motor 9, and the plurality of support rods 8 support and fix the motor 9.

[0025] The outer wall of the output shaft of the motor 9 is fixedly connected with an impeller 10, and the inner wall of the U-shaped plate 7 is fixedly connected with a mesh cover 11, which protects the impeller 10. The outer wall of the mesh cover 11 is fixedly inlaid with a supporting seat 12, which is rotatably connected to the impeller 10, and the supporting seat 12 assists the impeller 10 to rotate stably.

[0026] The outer wall of the U-shaped plate 7 is fixedly connected with a U-shaped sealing plate 13, and the U-shaped sealing plate 13 can drive the U-shaped plate 7 to move upward. The outer wall of the U-shaped sealing plate 13 is fixedly connected with a sealing strip 15, and the outer wall of the sealing strip 15 is squeezed with the outer wall of the guide tube 1. The sealing strip 15 realizes the sealing between the U-shaped sealing plate 13 and the guide tube 1 to avoid smoke leakage.

[0027] The outer wall of the U-shaped sealing plate 13 is provided with a locking mechanism, which includes two threaded rods 14. The outer wall of the U-shaped sealing plate 13 is provided with four threaded holes. The four threaded holes are threadedly connected to the outer walls of the two threaded rods 14 in groups of two. The outer walls of the threaded rods 14 are threadedly connected with nuts. The threaded rods 14 cooperate with the nuts to fix the U-shaped sealing plate 13 on the guide tube 1, and the nuts play a locking role.

[0028] Working principle: When in use, the existing smoke exhaust duct is connected to the multiple assembly holes 5 on the circular assembly plate 4 by bolts. When changing the docking angle, it is adjusted through the bellows 3. The bellows 3 itself has a certain deformation ability, which is convenient for adjusting the position of the guide tube 1. The operation of the motor 9 drives the impeller 10 to rotate. The rotation of the impeller 10 can transport the airflow to the other end of the guide tube 1 for exhaust; when maintaining the motor 9 and the impeller 10, the two threaded rods 14 and the nuts are rotated to release the position fixation of the U-shaped sealing plate 13, so that the U-shaped sealing plate 13 drives the U-shaped plate 7 to move upward. The U-shaped plate 7 moves upward to completely bring out the motor 9, the impeller 10 and the mesh cover 11, the output shaft of the motor 9 can be lubricated, the impeller 10 can be maintained, and the mesh cover 11 can be cleaned, and the overall maintenance process can be completed quickly.

[0029] The preferred embodiments of the utility model disclosed above are only used to help explain the utility model. The preferred embodiments do not describe all the details in detail, nor do they limit the utility model to only specific implementation methods. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the utility model, so that technicians in the relevant technical field can well understand and use the utility model. The utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A smoke exhaust device for fire fighting, comprising a guide tube (1), characterized in that: Both ends of the guide tube (1) are fixedly connected with a return-shaped docking plate (2); the outer wall of the guide tube (1) is provided with a U-shaped groove; the inner wall of the U-shaped groove is slidably connected with a U-shaped plate (7); the inner wall of the U-shaped plate (7) is fixedly connected with a plurality of support rods (8); one end of the plurality of support rods (8) is fixedly connected with the same motor (9); the outer wall of the output shaft of the motor (9) is fixedly connected with an impeller (10); the inner wall of the U-shaped plate (7) is fixedly connected with a mesh cover (11); the outer wall of the U-shaped plate (7) is fixedly connected with a U-shaped sealing plate (13); and the outer wall of the U-shaped sealing plate (13) is provided with a locking mechanism.

2. A smoke exhaust device for fire fighting according to claim 1, characterized in that: The locking mechanism comprises two threaded rods (14), the outer wall of the U-shaped sealing plate (13) is provided with four threaded holes, the four threaded holes are threadedly connected to the outer walls of the two threaded rods (14) in groups of two, and the outer walls of the threaded rods (14) are threadedly connected with nuts.

3. A smoke exhaust device for fire fighting according to claim 1, characterized in that: The outer wall of the circular butt joint plate (2) is fixedly connected to a bellows (3), and one end of the bellows (3) is fixedly connected to a circular assembly plate (4).

4. A smoke exhaust device for fire fighting according to claim 3, characterized in that: The outer wall of the circular assembly plate (4) is evenly provided with a plurality of assembly holes (5).

5. A smoke exhaust device for fire fighting according to claim 1, characterized in that: A plurality of brackets (6) are fixedly connected to the bottom of the flow guide tube (1).

6. A smoke exhaust device for fire fighting according to claim 1, characterized in that: A supporting seat (12) is fixedly embedded on the outer wall of the mesh cover (11), and the supporting seat (12) is rotatably connected to the impeller (10).

7. A smoke exhaust device for fire fighting according to claim 2, characterized in that: The outer wall of the U-shaped sealing plate (13) is fixedly connected with a sealing strip (15), and the outer wall of the sealing strip (15) is pressed against the outer wall of the flow guide tube (1).

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