Fire-fighting smoke exhaust fan

Abstract

The utility model belongs to the technical field of smoke exhaust fans, and particularly relates to a fire-fighting smoke exhaust fan. Comprising a smoke exhaust pipeline, and an assembling assembly is arranged on the lower side of the smoke exhaust pipeline; the mounting box is fixedly mounted on the right side of the smoke exhaust pipeline; one end of the connecting rod is fixedly connected with the upper side in the smoke exhaust pipeline, a circular mounting box is fixedly mounted at the lower end of the connecting rod, and a rotating shaft is rotationally assembled in the center of the rear side of the circular mounting box; the exhaust assembly is arranged at the rear end of the rotating shaft; the transmission mechanism is arranged in the circular mounting box and used for driving the rotating shaft to rotate; the motor is fixedly mounted in the mounting box, and an output shaft of the motor is connected with the transmission mechanism; the utility model has the advantages of simple structure and reasonable design, and can prevent high-temperature smoke from directly flowing through the motor to influence the service life due to overhigh temperature of the motor during use.

Description

Technical Field

[0001] The utility model belongs to the technical field of smoke exhaust fans, and particularly relates to a fire smoke exhaust fan. Background Technique

[0002] In recent years, the construction industry has developed particularly rapidly. Therefore, the fire prevention problem of buildings has become very important. Nowadays, modern buildings basically have a complete fire protection system. Among them, the smoke exhaust system is a part of the fire protection system, and the fire smoke exhaust fan is a device used in the smoke exhaust system.

[0003] When a fire occurs, the fire smoke exhaust fan can discharge the smoke and toxic gases at the fire scene to achieve the purpose of evacuating the smoke. In the existing technology, the motor of the fire smoke exhaust fan is often arranged inside its smoke exhaust pipe. The thick smoke generated during a fire also has a high temperature. When the thick smoke is discharged through the smoke exhaust pipe, it will directly flow through the motor, which is likely to cause the temperature of the motor to rise, thereby affecting the service life of the motor. Content of the Utility Model

[0004] The purpose of the utility model is to provide a fire smoke exhaust fan, which can avoid the high-temperature smoke directly flowing through the motor during use, causing the temperature of the motor to be too high and affecting the service life.

[0005] To achieve the above technical purpose, the technical scheme adopted by the utility model is as follows:

[0006] A fire smoke exhaust fan, comprising

[0007] A smoke exhaust pipe, and an assembly component is arranged on the lower side of the smoke exhaust pipe;

[0008] An installation box, which is fixedly installed on the right side of the smoke exhaust pipe;

[0009] A connecting rod, one end of which is fixedly connected to the upper side inside the smoke exhaust pipe, the lower end of the connecting rod is fixedly installed with a circular installation box, and a rotating shaft is rotationally assembled at the center of the rear side of the circular installation box;

[0010] An exhaust component, which is arranged at the rear end of the rotating shaft;

[0011] A transmission mechanism, which is arranged inside the circular installation box and used to drive the rotation of the rotating shaft;

[0012] A motor, which is fixedly installed inside the installation box, and the output shaft of the motor is connected to the transmission mechanism.

[0013] As a preferred technical scheme, the inner wall of the installation box is provided with a heat insulation layer, and the periphery of the motor is provided with a heat dissipation layer.

[0014] As a preferred technical solution, the exhaust component includes a frustum, the frustum is fixedly installed at the rear end of the rotating shaft, and a plurality of fan blades are fixedly installed on the circumference of the frustum.

[0015] As a preferred technical solution, the transmission mechanism includes an assembly rod, the assembly rod is rotatably assembled at the front side inside the circular installation box, the right end of the assembly rod extends into the inside of the installation box, and first bevel gears are fixedly installed at the front end of the rotating shaft and the output shaft of the motor respectively. Two second bevel gears are installed on the circumference of the assembly rod, and the two first bevel gears are respectively meshed with the two second bevel gears.

[0016] As a preferred technical solution, a filter screen is detachably installed on the front side of the smoke exhaust pipe, and a protective net is detachably installed on the rear side of the smoke exhaust pipe.

[0017] The beneficial effects of the present utility model are as follows:

[0018] During use, the motor is located outside the smoke exhaust pipe. When exhausting smoke, the high-temperature smoke generated by the fire will not directly act on the motor, and the impurities in the soot will not adhere to the motor, which is beneficial to the maintenance of the motor and can prevent the motor from being affected by excessive temperature and affecting its service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The present utility model can be further illustrated by the non-limiting embodiments given in the drawings.

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

[0021] Figure 2 It is a schematic diagram of the structure of another perspective of the present utility model;

[0022] Figure 3 It is a schematic diagram of the first partial structure of the present utility model;

[0023] Figure 4 It is a schematic diagram of the second partial structure of the present utility model;

[0024] Figure 5 It is a schematic diagram of the transmission mechanism structure of the present utility model.

[0025] Reference numerals: smoke exhaust pipe 1, filter screen 101, protective net 102, assembly component 11, installation box 2, heat insulation layer 21, heat dissipation layer 22, connecting rod 3, exhaust component 4, frustum 41, fan blade 42, circular installation box 31, rotating shaft 32, exhaust component 4, transmission mechanism 5, assembly rod 51, first bevel gear 52, second bevel gear 53, motor 6. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0026] To enable those skilled in the art to better understand the present utility model, the technical solution of the present utility model will be further described below in conjunction with the drawings and embodiments.

[0027] As Figures 1-5 shown, a fire exhaust fan of the present utility model includes

[0028] an exhaust duct 1, and an assembly component 11 is provided on the lower side of the exhaust duct 1;

[0029] an installation box 2, which is fixedly installed on the right side of the exhaust duct 1;

[0030] a connecting rod 3, one end of the connecting rod 3 is fixedly connected to the upper side inside the exhaust duct 1, and a circular installation box 31 is fixedly installed at the lower end of the connecting rod 3. A rotating shaft 32 is rotationally assembled at the center of the rear side of the circular installation box 31;

[0031] an exhaust component 4, which is arranged at the rear end of the rotating shaft 32; specifically, the exhaust component 4 includes a frustum 41, the frustum 41 is fixedly installed at the rear end of the rotating shaft 32, and a plurality of fan blades 42 are fixedly installed on the circumference of the frustum 41.

[0032] When exhausting, the rotating shaft 32 rotates to drive the frustum 41 to rotate, and the frustum 41 drives a plurality of fan blades 42 to rotate together for exhausting, and the smoke generated by the fire will be discharged through the exhaust duct 1.

[0033] a transmission mechanism 5, which is arranged inside the circular installation box 31 and is used to drive the rotating shaft 32 to rotate;

[0034] a motor 6, which is fixedly installed inside the installation box 2, and the output shaft of the motor 6 is connected to the transmission mechanism 5; specifically, the transmission mechanism 5 includes an assembly rod 51, the assembly rod 51 is rotationally assembled at the front side inside the circular installation box 31, the right end of the assembly rod 51 extends into the installation box 2, and first bevel gears 52 are fixedly installed at the front ends of the rotating shaft 32 and the output shaft of the motor 6. Two second bevel gears 53 are installed on the circumference of the assembly rod 51, and the two first bevel gears 52 are respectively engaged with the two second bevel gears 53.

[0035] During use, the motor 6 is started, the output shaft of the motor 6 drives the connected first bevel gear 52 to rotate. When the first bevel gear 52 rotates, it will drive the engaged second bevel gear 53 to rotate, then the assembly rod 51 rotates, the assembly rod 51 drives another second bevel gear 53 to rotate, and another second bevel gear 52 drives the other engaged first bevel gear 52 to rotate. Finally, the rotating shaft 32 rotates, and the exhaust component 4 is used for exhausting. In this way, the motor 6 is not located inside the exhaust duct 1, and the high-temperature smoke will not directly flow through the motor 6 to cause the temperature of the motor 6 to be too high, and the two first bevel gears 52 and the two second bevel gears 53 are respectively received inside the installation box 2 and the circular installation box 31 to avoid debris attachment during exhausting and affecting their meshing.

[0036] The inner wall of the installation box 2 is provided with a heat insulation layer 21, and the periphery of the motor 6 is provided with a heat dissipation layer 22; the heat insulation layer 21 can effectively isolate the external high temperature and reduce the internal temperature of the installation box 2, and the heat dissipation layer 22 can increase the heat dissipation efficiency of the motor 6.

[0037] A filter screen 101 is detachably installed on the front side of the smoke exhaust pipe 1, and a protective net 102 is detachably installed on the rear side of the smoke exhaust pipe 1; the filter screen 101 is provided to prevent large impurities from entering the inside of the smoke exhaust pipe 1 during fire exhaust, which affects the operation of the exhaust component 4, and the protective net 102 plays a protective role.

[0038] The usage method of this device is as follows:

[0039] In the initial state, the smoke exhaust pipe 1 is installed in a suitable position through the assembly component 11. When a fire occurs and smoke exhaust is required, the motor 6 is started. The output shaft of the motor 6 drives the second bevel gear 53 connected thereto to rotate, and then the assembly rod 51 rotates, driving the first bevel gear 52 connected to the rotating shaft 32 to rotate. The rotating shaft 32 drives the frustum 41 to rotate at a high speed, and several fan blades 42 rotate at a high speed to exhaust smoke. The smoke is discharged through the smoke exhaust pipe 1. During this process, the high-temperature smoke generated by the fire does not directly flow through the motor 6, avoiding the motor 6 from overheating and affecting its service life. At the same time, the inner wall of the installation box 2 is provided with a heat insulation layer 21 that can effectively isolate the external high temperature, and the heat dissipation layer 22 improves the heat dissipation efficiency of the motor 6, further improving the service life of the motor 6.

[0040] The above embodiments only exemplarily illustrate the principles and effects of the present invention, rather than being used to limit the present invention. Any person familiar with this technology can modify or change the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or changes completed by those with ordinary knowledge in the technical field without departing from the spirit and technical ideas disclosed by the present invention should still be covered by the claims of the present invention.

Claims

1. A fire smoke exhaust fan, characterized in that: include A smoke exhaust duct (1), wherein an assembly component (11) is provided on the lower side of the smoke exhaust duct (1); An installation box (2), wherein the installation box (2) is fixedly installed on the right side of the smoke exhaust duct (1); A connecting rod (3), one end of the connecting rod (3) is fixedly connected to the upper side of the smoke exhaust pipe (1), a circular installation box (31) is fixedly installed at the lower end of the connecting rod (3), and a rotating shaft (32) is rotatably mounted at the center of the rear side of the circular installation box (31); An exhaust component (4), wherein the exhaust component (4) is arranged at the rear end of the rotating shaft (32); A transmission mechanism (5) is arranged inside the circular installation box (31) and is used to drive the rotating shaft (32) to rotate; A motor (6), wherein the motor (6) is fixedly installed inside the installation box (2), and an output shaft of the motor (6) is connected to the transmission mechanism (5).

2. A fire smoke exhaust fan according to claim 1, characterized in that: The inner wall of the installation box (2) is provided with a heat insulation layer (21), and the periphery of the motor (6) is provided with a heat dissipation layer (22).

3. A fire smoke exhaust fan according to claim 1, characterized in that: The exhaust assembly (4) comprises a truncated platform (41), the truncated platform (41) is fixedly mounted on the rear end of the rotating shaft (32), and a plurality of fan blades (42) are fixedly mounted on the periphery of the truncated platform (41).

4. A fire smoke exhaust fan according to claim 1, characterized in that: The transmission mechanism (5) comprises an assembly rod (51), the assembly rod (51) is rotatably assembled with the front side of the inside of the circular installation box (31), the right end of the assembly rod (51) extends into the inside of the installation box (2), the front end of the rotating shaft (32) and the output shaft of the motor (6) are both fixedly mounted with a first bevel gear (52), and two second bevel gears (53) are mounted on the periphery of the assembly rod (51), and the two first bevel gears (52) are respectively meshed with the two second bevel gears (53).

5. The fire smoke exhaust fan according to claim 1, characterized in that: A filter screen (101) is detachably mounted on the front side of the smoke exhaust duct (1), and a protective screen (102) is detachably mounted on the rear side of the smoke exhaust duct (1).

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