Centrifugal fan for fire protection and smoke exhaust

Abstract

The utility model discloses a centrifugal fan for fire protection and smoke exhaust, which relates to the technical field of centrifugal fans and comprises a centrifugal fan body, a support component arranged at the lower end of the centrifugal fan body, and two groups of moving components arranged at the lower end of the support component. The supporting assembly comprises a mounting cavity base and a mounting rotary disc rotationally connected to the top face of the mounting cavity base, a mounting cavity groove is formed in the middle of the mounting rotary disc, a fan base is arranged at the lower end of the centrifugal fan body and fixedly connected into the mounting cavity groove of the mounting rotary disc, and a fan cover is arranged on one side of the centrifugal fan body. Silencing cotton is arranged in an inner cavity of the centrifugal fan body, a motor is fixedly connected to an inner cavity of the mounting cavity seat, through the arrangement, the working direction of the centrifugal fan body can be adjusted and changed through the supporting assembly according to actual needs, operation is easy, the smoke exhaust working efficiency of the centrifugal fan is improved, use and popularization are achieved, and the multi-directional use requirements are met.

Description

Technical Field

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

[0002] A centrifugal fan is a machine that relies on input mechanical energy to increase gas pressure and discharge gas. It is a driven fluid machine. Centrifugal fans are widely used in ventilation, dust removal and cooling of factories, mines, tunnels, cooling towers, vehicles, ships and buildings. Centrifugal fans can be used in the fire protection industry. Its main function is to exhaust smoke. The smoke exhaust centrifugal fan is a machine that can quickly exhaust the odor, high temperature and oil smoke generated in the room. It is characterized by good high temperature resistance and high efficiency. The machine of suitable size is selected according to the size of the space and the layout of the smoke exhaust hood, but the existing centrifugal fire smoke exhaust fan is inconvenient to move.

[0003] On this basis, after searching the patent website, the publication number CN102072201A discloses a centrifugal fan for fire fighting;

[0004] It can be seen that the above patent has the following shortcomings: the traditional centrifugal fan has a relatively simple structure and function, most of the fans are fixed in a certain place and cannot be moved and transported, and can only perform smoke exhaust work in a specific direction and position, and the exhaust direction of the fan cannot be changed, which affects the use effect of the centrifugal fan and reduces the working efficiency of the device.

[0005] In view of the above problems, a centrifugal fan for fire smoke exhaust is proposed. Utility Model Content

[0006] The purpose of the utility model is to provide a centrifugal fan for fire smoke exhaust, which is adopted to work, thereby solving the problem that most of the traditional centrifugal fans in the background technology are fixed in a certain place, cannot be moved and transported, can only perform smoke exhaust work in a specific direction and position, and cannot change the exhaust direction of the fan, which affects the use effect of the centrifugal fan and reduces the working efficiency of the device.

[0007] To achieve the above-mentioned objectives, the utility model provides the following technical solutions: a centrifugal fan for fire smoke exhaust, comprising a centrifugal fan body, a supporting assembly is arranged at the lower end of the centrifugal fan body, a moving assembly is arranged at the lower end of the supporting assembly, two groups of moving assemblies are arranged, the supporting assembly comprises an installation cavity seat and an installation turntable rotatably connected to the top surface of the installation cavity seat, an installation cavity groove is arranged in the middle of the installation turntable, a fan base is arranged at the lower end of the centrifugal fan body, the fan base is fixedly connected to the installation cavity groove of the installation turntable, a fan cover is arranged on one side of the centrifugal fan body, a sound-absorbing cotton is arranged in the inner cavity of the centrifugal fan body, a motor is fixedly connected to the inner cavity of the installation cavity seat, the moving assembly comprises a bottom cavity seat fixedly connected to the bottom of the installation cavity seat, a sliding component is arranged in the inner cavity of the bottom cavity seat, and four groups of sliding components are arranged.

[0008] Preferably, the sliding component comprises a supporting plate fixedly connected to the inner wall of the top of the bottom cavity seat, and a hydraulic cylinder is fixedly connected to the bottom of the supporting plate.

[0009] Preferably, a connecting block is provided at the lower end of the hydraulic cylinder, and the connecting block is connected to the output end of the hydraulic cylinder.

[0010] Preferably, a connecting and mounting slot block is fixedly connected to the bottom of the connecting block, and a roller is rotatably connected to one side of the connecting and mounting slot block.

[0011] Preferably, the support assembly further comprises a fixing plate fixedly connected to the inner cavity of the mounting cavity seat, two groups of fixing plates are provided, and the motor is provided on one side of one group of fixing plates.

[0012] Preferably, a worm is rotatably connected between the two groups of fixing plates, and one end of the worm is connected to one end of the motor output end.

[0013] Preferably, the inner cavity of the installation cavity seat is also rotatably connected to a worm wheel, the worm wheel is meshingly connected to the worm, and the bottom of the installation turntable is fixedly connected to the top of the worm wheel.

[0014] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0015] The utility model discloses a centrifugal fan for fire smoke exhaust.

[0016] 1. The utility model discloses a centrifugal fan for fire smoke exhaust. Most of the existing centrifugal fans are fixed at a certain place and can only exhaust smoke in a specific direction. The device cannot change the direction of the fan exhaust according to the use needs, which affects the working efficiency of the fan. The lower end of the mobile assembly of the utility model is provided with a support assembly. The operator can start the motor inside the installation cavity seat, and the motor moves forward or reversely to make the worm rotate. The worm wheel meshing with one side of the worm will rotate at the same time. The worm wheel drives the installation turntable and the centrifugal fan body installed on the top surface of the installation turntable to rotate forward or reverse, thereby making The exhaust direction of the centrifugal fan body can be adjusted and rotated in the forward or reverse direction. When the exhaust direction of the centrifugal fan body is adjusted to the specified direction, the motor is turned off and the worm and worm wheel are used to rotate together. Compared with the driving method of ordinary motor rotation, the adjustment range can be more precise and the rotation driving force is greater, which improves the applicability of the device and can more easily drive the centrifugal fan body to rotate. This setting can adjust the working orientation of the centrifugal fan body according to actual needs through the support assembly, and the operation is simple, which improves the working efficiency of the centrifugal fan exhaust and can be promoted to meet various usage needs.

[0017] 2. The utility model discloses a centrifugal fan for fire smoke exhaust. The centrifugal fan generates relatively large noise when in operation. Part of the noise comes from the resonance of the internal parts of the ventilation tube. The utility model adheres a circle of silencer cotton to the inner wall of the centrifugal fan body, which can eliminate part of the noise generated inside the body. When the user needs to move the centrifugal fan body to other places of use, the moving assembly and the centrifugal fan body at the upper end of the moving assembly can be easily moved by using multiple groups of rollers arranged on one side of the moving assembly. If the centrifugal fan body needs to be fixed on the ground, multiple groups of hydraulic cylinders can be started at the same time, and the hydraulic cylinders can retract to drive the connecting block, the connecting mounting slot block and the rollers. The wheels are retracted until the multiple groups of rollers are retracted into the inner cavity of the bottom cavity seat, until the multiple groups of rollers are completely off the ground, and at the same time the centrifugal fan body can be supported on the ground by the bottom cavity seat, so the centrifugal fan body can be stabilized at the designated location; when the rollers are needed again, the multiple groups of hydraulic cylinders can be started at the same time, and the hydraulic cylinders extend to drive the connecting blocks and the rollers to extend out of the inner cavity of the bottom cavity seat until the multiple groups of rollers touch the ground and the bottom cavity seat leaves the ground, so the centrifugal fan body can be pushed again. This arrangement utilizes the two groups of moving components at the bottom of the device, so that the centrifugal fan body can be switched between movement and fixation at any time according to needs, avoiding manual transportation of the centrifugal fan body, saving time and effort, and improving the practicality of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0019] Figure 2 This is a structural diagram of the support assembly and fan body of the utility model;

[0020] Figure 3 This is a structural diagram of the internal components of the mounting cavity seat of the utility model;

[0021] Figure 4 This is a structural diagram of the fan body of the utility model;

[0022] Figure 5 This is a structural diagram of the disassembled parts of the mobile assembly of the utility model.

[0023] In the figure: 1. Moving assembly; 11. Bottom cavity seat; 12. Sliding component; 13. Support plate; 14. Hydraulic cylinder; 15. Connecting block; 16. Connecting mounting slot block; 17. Roller; 2. Support assembly; 21. Mounting cavity seat; 22. Mounting turntable; 23. Worm gear; 24. Motor; 25. Fixed plate; 26. Worm; 3. Centrifugal fan body; 31. Fan base; 32. Fan cover; 33. Silencing cotton. DETAILED DESCRIPTION

[0024] 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 in 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.

[0025] In order to further understand the content of the utility model, the utility model is described in detail in conjunction with the accompanying drawings.

[0026] Combination Figure 1-5 A centrifugal fan for fire smoke exhaust comprises a centrifugal fan body 3, a support assembly 2 is arranged at the lower end of the centrifugal fan body 3, a moving assembly 1 is arranged at the lower end of the support assembly 2, and the moving assembly 1 is provided with two groups, the support assembly 2 comprises a mounting cavity seat 21 and a mounting turntable 22 rotatably connected to the top surface of the mounting cavity seat 21, a mounting cavity groove is arranged in the middle of the mounting turntable 22, a fan base 31 is arranged at the lower end of the centrifugal fan body 3, the fan base 31 is fixedly connected in the mounting cavity groove of the mounting turntable 22, a fan cover 32 is arranged on one side of the centrifugal fan body 3, a sound-absorbing cotton 33 is arranged in the inner cavity of the centrifugal fan body 3, a motor 24 is fixedly connected to the inner cavity of the mounting cavity seat 21, and the moving assembly 1 comprises a bottom cavity seat 11 fixedly connected to the bottom of the mounting cavity seat 21, a sliding component 12 is arranged in the inner cavity of the bottom cavity seat 11, and the sliding component 12 is provided in four groups.

[0027] The utility model is further described below in conjunction with embodiments.

[0028] Embodiment 1:

[0029] See also Figure 1-3 The support assembly 2 also includes a fixing plate 25 fixedly connected to the inner cavity of the mounting cavity seat 21. Two groups of fixing plates 25 are provided. The motor 24 is provided on one side of a group of fixing plates 25. A worm 26 is rotatably connected between the two groups of fixing plates 25. One end of the worm 26 is connected to one end of the output end of the motor 24. A worm wheel 23 is also rotatably connected to the inner cavity of the mounting cavity seat 21. The worm wheel 23 is meshedly connected to the worm 26. The bottom of the mounting turntable 22 is fixedly connected to the top of the worm wheel 23.

[0030] Embodiment 2:

[0031] See also Figure 1 and Figure 4-5 The sliding component 12 includes a supporting plate 13 fixedly connected to the inner wall of the top of the bottom cavity seat 11, a hydraulic cylinder 14 is fixedly connected to the bottom of the supporting plate 13, a connecting block 15 is provided at the lower end of the hydraulic cylinder 14, the connecting block 15 is connected to the output end of the hydraulic cylinder 14, a connecting and mounting groove block 16 is fixedly connected to the bottom of the connecting block 15, and a roller 17 is rotatably connected to one side of the connecting and mounting groove block 16.

[0032] In summary: the utility model discloses a centrifugal fan for fire smoke exhaust. Most of the existing centrifugal fans are fixed at a certain place and can only exhaust smoke in a specific direction. The device cannot change the direction of the fan exhaust according to the use needs, which affects the working efficiency of the fan. The lower end of the mobile component 1 of the utility model is provided with a support component 2. The operator can start the motor 24 inside the mounting cavity seat 21. The motor 24 performs forward or reverse movement, so that the worm 26 rotates, and the worm wheel 23 meshingly connected to one side of the worm 26 will rotate at the same time. The worm wheel 23 drives the mounting turntable 22 and the centrifugal fan body 3 installed on the top surface of the mounting turntable 22 to perform forward or reverse movement. Rotate, so that the exhaust direction of the centrifugal fan body 3 is adjusted to rotate forward or reverse. When the exhaust direction of the centrifugal fan body 3 is adjusted to the specified direction, the motor 24 is turned off, and the worm 26 and the worm wheel 23 are used to rotate in coordination. Compared with the driving method of ordinary motor rotation, the adjustment range can be more precise and the rotation driving force is greater, which improves the applicability of the device and can more easily drive the centrifugal fan body 3 to rotate. This setting can adjust the working position of the centrifugal fan body 3 according to actual needs through the support component 2, and the operation is simple, which improves the working efficiency of the centrifugal fan exhaust, and is used and promoted to meet the use needs in various directions;

[0033] The centrifugal fan generates a lot of noise when in operation, and part of the noise comes from the resonance of the internal parts of the ventilator when they are working. In the present invention, a circle of silencer cotton 33 is pasted on the inner wall of the centrifugal fan body 3, which can be used to eliminate part of the noise generated inside the body; when the user needs to move the centrifugal fan body 3 to other places of use, the multiple groups of rollers 17 set on one side of the moving component 1 can be used to easily move the moving component 1 and the centrifugal fan body 3 on the upper end of the moving component 1. If the centrifugal fan body 3 needs to be fixed on the ground, the multiple groups of hydraulic cylinders 14 can be started at the same time, and the hydraulic cylinders 14 retract to drive the connecting block 15, the connecting mounting slot block 16 and the rollers 17 to retract until the multiple groups of rollers 17 retract. When the rollers 17 are needed again, the multiple hydraulic cylinders 14 can be started at the same time. The hydraulic cylinders 14 extend to drive the connecting blocks 15 and the rollers 17 to extend out of the inner cavity of the bottom cavity seat 11 until the multiple rollers 17 touch the ground and the bottom cavity seat 11 leaves the ground, and the centrifugal fan body 3 can be pushed again. This arrangement utilizes the two groups of mobile components 1 at the bottom of the device, so that the centrifugal fan body 3 can be switched between mobile and fixed at any time according to needs, avoiding manual handling of the centrifugal fan body 3, saving time and effort, and improving the practicality of the device.

[0034] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0035] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A centrifugal fan for fire smoke exhaust, comprising a centrifugal fan body (3), characterized in that: The centrifugal fan body (3) is provided with a support assembly (2) at the lower end, and a moving assembly (1) is provided at the lower end of the support assembly (2). The moving assembly (1) is provided in two groups. The support assembly (2) comprises a mounting cavity seat (21) and a mounting turntable (22) rotatably connected to the top surface of the mounting cavity seat (21). A mounting cavity groove is provided in the middle of the mounting turntable (22). A fan base (31) is provided at the lower end of the centrifugal fan body (3). The fan base (31) is fixedly connected in the mounting cavity groove of the mounting turntable (22). A fan cover (32) is provided on one side of the centrifugal fan body (3). A sound-absorbing cotton (33) is provided in the inner cavity of the centrifugal fan body (3). The inner cavity of the mounting cavity seat (21) is fixedly connected to a motor (24). The moving assembly (1) comprises a bottom cavity seat (11) fixedly connected to the bottom of the mounting cavity seat (21). The inner cavity of the bottom cavity seat (11) is provided with a sliding component (12). The sliding component (12) is provided in four groups.

2. A centrifugal fan for fire smoke exhaust according to claim 1, characterized in that: The sliding component (12) comprises a supporting plate (13) fixedly connected to the top inner wall of the bottom cavity seat (11), and a hydraulic cylinder (14) is fixedly connected to the bottom of the supporting plate (13).

3. A centrifugal fan for fire smoke exhaust according to claim 2, characterized in that: A connecting block (15) is provided at the lower end of the hydraulic cylinder (14), and the connecting block (15) is connected to the output end of the hydraulic cylinder (14).

4. A centrifugal fan for fire smoke exhaust according to claim 3, characterized in that: The bottom of the connection block (15) is fixedly connected to a connection installation slot block (16), and one side of the connection installation slot block (16) is rotatably connected to a roller (17).

5. A centrifugal fan for fire smoke exhaust according to claim 4, characterized in that: The support assembly (2) further comprises a fixing plate (25) fixedly connected to the inner cavity of the mounting cavity seat (21), two groups of fixing plates (25) are provided, and the motor (24) is provided on one side of a group of fixing plates (25).

6. A centrifugal fan for fire smoke exhaust according to claim 5, characterized in that: A worm (26) is rotatably connected between the two groups of fixing plates (25), and one end of the worm (26) is connected to one end of the output end of the motor (24).

7. A centrifugal fan for fire smoke exhaust according to claim 6, characterized in that: The inner cavity of the mounting cavity seat (21) is also rotatably connected to a worm wheel (23), the worm wheel (23) is meshingly connected to the worm (26), and the bottom of the mounting turntable (22) is fixedly connected to the top of the worm wheel (23).

Images