DF type centrifugal fan

Abstract

The utility model discloses a DF type centrifugal fan, and mainly relates to the technical field of fans. Comprising a machine body, a servo motor is fixedly connected to one side of the machine body, an air inlet is formed in the side, away from the servo motor, of the machine body, fan blades are arranged in the machine body and fixedly connected with the output end of the servo motor, and a filter screen is fixedly connected to the inner wall of the air inlet; an adjusting structure is arranged on the side, close to the filter screen, of the machine body and comprises an arc-shaped rail, one side of the arc-shaped rail is fixedly connected with the machine body, and a sliding block is slidably connected to the inner wall of the arc-shaped rail. The fan has the beneficial effects that a worker can conveniently adjust the cleaning brush to clean dust on the surface of the filter screen, so that the dust is prevented from being attached to the filter screen to block the filter screen, influence the filter screen and cause normal use of the fan, the practicability of the fan is improved, and the filter screen can be detached after being used for a period of time, so that the labor intensity of the worker is reduced. And personnel can conveniently clean or replace the filter screen.

Description

Technical Field

[0001] The utility model relates to the technical field of fans, in particular to a DF type centrifugal fan. Background Art

[0002] A centrifugal fan is a machine that relies on input mechanical energy to increase gas pressure and discharge gas. Centrifugal fans are mainly used for ventilation and air induction.

[0003] The utility model with announcement number CN220101650U discloses a high-pressure centrifugal fan, and the technical solution thereof mainly includes a housing, an air inlet and an air outlet are arranged on the housing, a mounting plate is fixedly connected to the inner peripheral wall of the housing, a plurality of mounting holes are opened on the mounting plate, a lighting lamp is installed in the mounting hole, the lighting lamp is accommodated in the mounting hole, and a dustproof sheet for covering all mounting holes is slidably connected to the mounting plate. The utility model provides a lighting lamp, so that the cleaning staff can see the dust and dirt in the housing more clearly, thereby facilitating the cleaning staff to clean the dust and dirt in the fan, making the fan cleaner, and ensuring the running effect of the fan after cleaning.

[0004] With regard to the relevant contents mentioned above, the following technical defects were found: when the fan of the prior art is in use, in order to prevent dust and other dirt from entering the body through the air inlet, a filter is installed at the air inlet to filter the dust. However, after the filter has been used for a period of time, dust is easily attached and accumulated on its surface. If it is not cleaned in time, the filter will become clogged, which will affect the filter and the normal use of the fan. Utility Model Content

[0005] The utility model aims to solve the shortcomings in the prior art and proposes a DF type centrifugal fan.

[0006] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a DF type centrifugal fan comprises a body, one side of the body is fixedly connected to a servo motor, an air inlet is opened on the side of the body away from the servo motor, fan blades are arranged inside the body, the fan blades are fixedly connected to the output end of the servo motor, the inner wall of the air inlet is fixedly connected to a filter, the arc surface of the body is fixedly connected to an exhaust duct, an adjustment structure is provided on the side of the body close to the filter, the adjustment structure comprises an arc rail, one side of the arc rail is fixedly connected to the body, a slider is slidably connected to the inner wall of the arc rail, a pressure rod is threadedly penetrated on the side of the slider away from the arc rail, the cross-section of the pressure rod is "T"-shaped, one side of the slider is fixedly connected to a connecting plate, two sliding rods are slidably penetrated on the surface of the connecting plate, the cross-section of the sliding rod is "T"-shaped, and one end of the two sliding rods is fixedly connected to a cleaning brush.

[0007] The effect achieved by the above components is: by setting the adjustment structure, personnel can easily adjust the cleaning brush to clean the dust on the surface of the filter, thereby preventing dust from adhering to the filter and clogging the filter, affecting the filter and the normal use of the fan, thereby improving the practicality of the fan, and the filter can be disassembled after being used for a period of time, which is convenient for personnel to clean or replace the filter.

[0008] Preferably, the arc surface of the slide rod is sleeved with a spring, and two ends of the spring are fixedly connected to the slide rod and the connecting plate respectively.

[0009] The effect achieved by the above components is that the spring can drive the cleaning brush to automatically move in the direction close to the filter screen without the need for personnel to manually press the slide bar, thereby achieving the effect of conveniently controlling the cleaning brush.

[0010] Preferably, the side of the slider away from the connecting plate is fixedly connected to an ear plate, a positioning rod is slidably penetrated through the side of the ear plate, the center of the positioning rod and the center of the arc rail are located on the same straight line, one end of the positioning rod is fixedly connected to the positioning plate, and one side of the positioning plate is fixedly connected to the arc rail.

[0011] The effect achieved by the above components is that when the slider moves along the inner wall of the arc rail, the ear plate fixed on the slider will slide along the arc surface of the positioning rod, thereby achieving the effect of improving the stability of the slider movement process.

[0012] Preferably, a handle is fixedly connected to one side of the connecting plate, and the cross-section of the handle is "U"-shaped.

[0013] The effect achieved by the above components is that the moving handle can drive the connecting plate, thereby achieving the effect of conveniently controlling the connecting plate.

[0014] Preferably, the cleaning brush is a bristle brush.

[0015] The effect achieved by the above components is: by setting the cleaning brush as a bristle brush, the bristles have good elasticity, good durability and can be anti-static, so that the cleaning brush can have higher practicality.

[0016] Preferably, one end of the pressure rod close to the arc rail is fixedly connected with a rubber plug.

[0017] The effect achieved by the above components is that the rubber plug can increase the friction force of one end of the pressure rod, so that the pressure rod can be firmly abutted against the bottom of the inner wall of the arc rail with the help of the rubber plug.

[0018] Preferably, one end of the pressure rod away from the arc rail is fixedly connected to a rotating block.

[0019] The effect achieved by the above components is that a person rotates the rotating block to drive the pressure rod to rotate, thereby achieving the effect of facilitating the rotation of the rotating block.

[0020] In summary, the beneficial effects of the utility model are:

[0021] In the utility model, when the centrifugal fan needs to be used for air supply operation, the servo motor is started to drive the fan blades to rotate. At this time, air will enter the machine body through the air inlet, and then the air will be discharged from the exhaust pipe. The filter can filter the air entering the air inlet to prevent dust and other dirt from entering the inside of the machine body and causing clogging of the pipeline. After the filter has been used for a period of time, dust is easily attached to the filter position. By setting an adjustment structure, personnel can easily adjust the cleaning brush to clean the dust on the surface of the filter, thereby preventing dust from adhering to the filter and clogging the filter, affecting the filter and even the normal use of the fan, thereby improving the practicality of the fan, and the filter can be disassembled after being used for a period of time, which is convenient for personnel to clean or replace the filter. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Attached Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0023] Attached Figure 2 It is a partial structural schematic diagram of the utility model;

[0024] Attached Figure 3 This utility model Figure 2 The structural diagram on the left;

[0025] Attached Figure 4 It is a structural schematic diagram of the regulating structure of the utility model;

[0026] Attached Figure 5 It is a schematic diagram of the partial structural disassembly of the regulating structure of the utility model.

[0027] Numbers shown in the accompanying drawings: 1, machine body; 2, exhaust duct; 3, adjustment structure; 301, arc rail; 302, slider; 303, pressure rod; 304, connecting plate; 305, slide rod; 306, cleaning brush; 307, handle; 308, spring; 309, ear plate; 310, positioning rod; 311, positioning plate; 312, rubber plug; 313, rotating block; 4, fan blades; 5, air inlet; 6, filter; 7, servo motor. DETAILED DESCRIPTION

[0028] The present invention is further described below in conjunction with specific embodiments. It should be understood that these embodiments are only used to illustrate the present invention and are not used to limit the scope of the present invention. In addition, it should be understood that after reading the content taught by the present invention, those skilled in the art can make various changes or modifications to the present invention, and these equivalent forms also fall within the scope defined by the claims attached to this application.

[0029] Reference Figure 1 , Figure 2 and Figure 3 As shown, the utility model provides a technical solution: a DF type centrifugal fan, including a body 1, a servo motor 7 is fixedly connected to one side of the body 1, an air inlet 5 is opened on the side of the body 1 away from the servo motor 7, fan blades 4 are arranged inside the body 1, the fan blades 4 are fixedly connected to the output end of the servo motor 7, a filter screen 6 is fixedly connected to the inner wall of the air inlet 5, an arc surface of the body 1 is fixedly connected to an exhaust duct 2, and an adjustment structure 3 is provided on the side of the body 1 close to the filter screen 6.

[0030] The specific settings and functions of the adjustment structure 3 are described in detail below.

[0031] Reference Figure 4 and Figure 5As shown, in this embodiment: the adjustment structure 3 includes an arc-shaped rail 301, one side of the arc-shaped rail 301 is fixedly connected to the body 1, a slider 302 is slidably connected to the inner wall of the arc-shaped rail 301, a pressure rod 303 is threadedly penetrated on the side of the slider 302 away from the arc-shaped rail 301, and the cross section of the pressure rod 303 is "T"-shaped, and a connecting plate 304 is fixedly connected to one side of the slider 302, and two sliding rods 305 are slidably penetrated on the surface of the connecting plate 304, and the cross section of the sliding rods 305 is "T"-shaped, and one end of the two sliding rods 305 is fixedly connected to a cleaning brush 306, and by setting the adjustment structure 3, personnel can conveniently adjust the cleaning brush 306 to clean the dust on the surface of the filter 6, thereby The cleaning brush 306 can be automatically moved toward the filter 6 by the spring 308, without the need for manual pressing of the sliding bar 305, so as to achieve the effect of conveniently controlling the cleaning brush 306. The side of the slider 302 away from the connecting plate 304 is fixedly connected with an ear plate 309, and the side sliding of the ear plate 309 is fixedly connected with the filter 6. The movable wear is provided with a positioning rod 310, the center of the positioning rod 310 and the center of the arc rail 301 are located on the same straight line, one end of the positioning rod 310 is fixedly connected to a positioning plate 311, one side of the positioning plate 311 is fixedly connected to the arc rail 301, and during the movement of the slider 302 along the inner wall of the arc rail 301, the ear plate 309 fixed on the slider 302 will slide along the arc surface of the positioning rod 310, thereby achieving the effect of improving the stability of the slider 302 during the movement process, and a handle 307 is fixedly connected to one side of the connecting plate 304, and the cross-section of the handle 307 is "U"-shaped. Moving the handle 307 can drive the connecting plate 304, thereby achieving the convenient control of the connecting plate 30 4, the cleaning brush 306 is specifically a bristle brush. By setting the cleaning brush 306 as a bristle brush, the bristles have good elasticity, good durability and can be anti-static, which can make the cleaning brush 306 have high practicality. The end of the pressure rod 303 close to the arc rail 301 is fixedly connected with a rubber plug 312, and the rubber plug 312 can increase the friction force of one end of the pressure rod 303, so that the pressure rod 303 can be firmly abutted against the bottom of the inner wall of the arc rail 301 with the help of the rubber plug 312. The end of the pressure rod 303 away from the arc rail 301 is fixedly connected with a rotating block 313. The person rotates the rotating block 313 to drive the pressure rod 303 to rotate, thereby achieving the effect of facilitating the rotation of the rotating block 313.

[0032] Detailed description of usage: When the centrifugal fan needs to be used for air supply operation, start the servo motor 7 to drive the fan blades 4 to rotate. At this time, the air will enter the body 1 through the air inlet 5, and then the air will be discharged from the exhaust pipe 2. The filter 6 can filter the air entering the air inlet 5 to prevent dust and other dirt from entering the body 1 and causing pipe blockage. After the filter 6 has been used for a period of time, dust is easily attached to the filter 6. When it is necessary to adjust the cleaning brush 306 to clean the dust on the surface of the filter 6, first rotate the rotating block 313 to drive the pressure rod 303, so that the pressure rod 303 drives the rubber plug 312 to separate from the bottom of the inner wall of the arc rail 301, and then move the handle 307 to drive the connecting plate The connecting plate 304 drives the slider 302 to slide along the inner wall of the arc track 301. At this time, the cleaning brush 306 will rotate. At the same time, the connecting plate 304 drives the slide bar 305. The slide bar 305 drives the cleaning brush 306, so that the cleaning brush 306 moves toward the direction close to the filter screen 6 under the drive of the spring 308, and then the cleaning brush 306 can rotate back and forth to clean the dust on the surface of the filter screen 6. When the cleaning brush 306 is used, the pressure rod 303 is rotated in the opposite direction with the help of the rotating block 313, so that the pressure rod 303 drives the rubber plug 312 to abut against the bottom of the inner wall of the arc track 301, so as to limit the cleaning brush 306. After using for a period of time, the personnel can move the slider 302 to remove it from the opening of the arc track 301, and then remove the cleaning brush 306. At this time, the personnel can clean, maintain or replace the cleaning brush 306. The spring 308 can drive the cleaning brush 306 to automatically move toward the direction close to the filter screen 6 without the personnel manually pressing the slide bar 305, thereby achieving the effect of conveniently controlling the cleaning brush 306. In addition, during the movement of the slider 302 along the inner wall of the arc track 301, the ear plate 309 fixed on the slider 302 will slide along the arc surface of the positioning rod 310, thereby achieving the effect of improving the stability of the slider 302 during movement. By setting the cleaning brush 306 to the pig Bristle brush, pig bristle has good elasticity, durability and anti-static properties, which can make the cleaning brush 306 highly practical. Finally, the rubber plug 312 can increase the friction force at one end of the pressure rod 303, so that the pressure rod 303 can be firmly abutted against the bottom of the inner wall of the arc rail 301 with the help of the rubber plug 312. By setting the adjustment structure 3, personnel can easily adjust the cleaning brush 306 to clean the dust on the surface of the filter 6, thereby preventing dust from adhering to the filter 6 and clogging the filter 6, affecting the normal use of the filter 6 and even the fan, thereby improving the practicality of the fan. After the filter 6 has been used for a period of time, it can be disassembled to facilitate personnel to clean or replace the filter 6.

Claims

1. A DF type centrifugal fan, comprising a body (1), characterized in that: A servo motor (7) is fixedly connected to one side of the machine body (1), an air inlet (5) is provided on a side of the machine body (1) away from the servo motor (7), a fan blade (4) is arranged inside the machine body (1), the fan blade (4) is fixedly connected to the output end of the servo motor (7), a filter screen (6) is fixedly connected to the inner wall of the air inlet (5), an arc surface of the machine body (1) is fixedly connected to an exhaust pipe (2), and an adjustment structure (3) is provided on a side of the machine body (1) close to the filter screen (6), the adjustment structure (3) comprises an arc rail (301), and the arc rail (30 1) is fixedly connected to the machine body (1), the inner wall of the arc-shaped rail (301) is slidably connected to a slider (302), a pressure rod (303) is threadedly penetrated on the side of the slider (302) away from the arc-shaped rail (301), the cross section of the pressure rod (303) is in a "T" shape, one side of the slider (302) is fixedly connected to a connecting plate (304), the surface of the connecting plate (304) is slidably penetrated with two sliding rods (305), the cross section of the sliding rods (305) is in a "T" shape, and one end of the two sliding rods (305) is fixedly connected to a cleaning brush (306).

2. A DF type centrifugal fan according to claim 1, characterized in that: The arc surface of the slide bar (305) is sleeved with a spring (308), and the two ends of the spring (308) are respectively fixedly connected to the slide bar (305) and the connecting plate (304).

3. A DF type centrifugal fan according to claim 1, characterized in that: A lug plate (309) is fixedly connected to one side of the slider (302) away from the connecting plate (304); a positioning rod (310) is slidably penetrated through the side of the lug plate (309); the center of the circle of the positioning rod (310) and the center of the circle of the arc rail (301) are located on the same straight line; one end of the positioning rod (310) is fixedly connected to a positioning plate (311); one side of the positioning plate (311) is fixedly connected to the arc rail (301).

4. A DF type centrifugal fan according to claim 1, characterized in that: A handle (307) is fixedly connected to one side of the connecting plate (304), and the cross section of the handle (307) is "U"-shaped.

5. A DF type centrifugal fan according to claim 1, characterized in that: The cleaning brush (306) is specifically a bristle brush.

6. A DF type centrifugal fan according to claim 1, characterized in that: One end of the pressure rod (303) close to the arc-shaped rail (301) is fixedly connected to a rubber plug (312).

7. A DF type centrifugal fan according to claim 1, characterized in that: One end of the pressure rod (303) away from the arc-shaped rail (301) is fixedly connected to a rotating block (313).

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