A centrifugal fan

Abstract

The utility model relates to the technical field of mechanical equipment, and discloses a centrifugal fan, including a shell and a mounting seat, the front side of the shell is connected to an air outlet, the rear side of the shell is connected to an air intake frame, the front side of the interior of the air intake frame is fixedly connected to a filter screen, the left side of the interior of the air intake frame is fixedly connected to a fixing plate, the upper and lower sides of the fixing plate are fixedly connected to cylinders, one end of the two cylinders is fixedly connected to a connecting piece, and the right sides of the two connecting pieces are rotatably connected to a rotating plate. In the utility model, the rotating plate is driven to rotate by starting the cylinder, so that the slider pushes the cleaning brush to move left and right on the surface of the filter screen, and the external dust is cleaned by the reverse blowing gas and the cleaning brush, and the extension plate is driven to expand to both sides by the inclined block, so as to drive the plug rod and the plug plate to engage and connect, and quickly complete the installation and fixation of the fan.

Description

Technical Field

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

[0002] A fan is a machine that relies on input mechanical energy to increase gas pressure and transport gas. It is a driven fluid machine. Gas compression and gas transportation machinery is a machine that converts rotational mechanical energy into gas pressure energy and kinetic energy and transports the gas. Fans can be roughly divided into axial flow fans and centrifugal fans.

[0003] Centrifugal fans are mostly used in industrial production environments, such as mine ventilation, factory dust removal, air conditioning and refrigeration. Their working principle is mainly to use an electric motor to drive the impeller inside the fan to rotate, generating centrifugal force to inhale and accelerate the flow of gas, thereby achieving the transportation, pressurization or exhaust of air or other gases.

[0004] In order to ensure the stable operation of the centrifugal fan, the internal motor is protected by adjusting the angle of the blades and a protective shell is installed on the outside to reduce the noise generated during the operation of the equipment. In order to ensure the cleanliness of the surface of the internal motor and impeller, a filter is installed at the air inlet of the shell to reduce the entry of dust. However, dust accumulates on the filter for a long time, which can easily cause the wind force to decrease and the internal temperature to overheat, causing damage to the equipment. Therefore, a centrifugal fan is proposed to solve the above problems. Utility Model Content

[0005] In order to make up for the above shortcomings, the utility model provides a centrifugal fan, which aims to improve the problem in the prior art that dust accumulates on the filter screen for a long time, which easily causes the wind force to become smaller and the internal temperature to overheat.

[0006] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a centrifugal fan comprises a shell and a mounting seat, the front side of the shell is connected with an air outlet, the rear side of the shell is connected with an air inlet frame, the front side of the interior of the air inlet frame is fixedly connected with a filter screen, the inner left side of the air inlet frame is fixedly connected with a fixing plate, the upper and lower sides of the fixing plate are fixedly connected with cylinders, one end of the two cylinders is fixedly connected with a connecting piece, the right sides of the two connecting pieces are rotatably connected with a rotating plate, the middle parts of the two rotating plates are rotatably connected through a rotating shaft, the right sides of the two rotating plates are rotatably connected with a slider, the right sides of the two sliders are slidably connected with a cleaning brush, the inner side of the shell is fixedly connected with a mounting plate, the right side of the mounting plate is fixedly connected with a motor, one end of the motor passes through the left side of the mounting plate and is fixedly connected with an impeller, the top of the shell is fixedly connected with a top cover, and the top of the mounting seat is provided with a mounting mechanism, and the mounting mechanism is used to facilitate the installation and disassembly of the fan.

[0007] As a further description of the above technical solution:

[0008] The mounting mechanism comprises a plurality of plug plates, the tops of the plurality of plug plates are fixedly connected to the four bottom corners of the shell, plug slots are provided at the four top corners of the mounting seat, the left and right sides of the interior of the mounting seat are fixedly connected to limit plates, the interiors of the two limit plates are slidably connected to extension plates, the two extension plates are fixedly connected to the opposite sides thereof with connecting plates, the two connecting plates are fixedly connected to the opposite sides thereof with a plurality of plug rods, the outer walls of the plurality of plug rods are fixedly connected to springs, a screw is threadedly connected to the right side of the mounting seat, and the left end of the screw passes through the right side of the mounting seat and is rotatably connected to a ramp block.

[0009] As a further description of the above technical solution:

[0010] The outer wall of the motor is fixedly connected with a reinforcement plate 1, and the right sides of the two reinforcement plates 1 are threadedly connected with reinforcement bolts.

[0011] As a further description of the above technical solution:

[0012] The bottom of the top cover is fixedly connected with sound insulation cotton, and the right side of the shell is fixedly connected with a power box.

[0013] As a further description of the above technical solution:

[0014] A plurality of rotating blocks are fixedly connected to both the left and right sides of the shell, and handles are rotatably connected between adjacent rotating blocks.

[0015] As a further description of the above technical solution:

[0016] A plurality of reinforcing plates 2 are fixedly connected to both the front and rear sides of the mounting seat, and the tops of the plurality of reinforcing plates 2 are threadedly connected with bolts.

[0017] As a further description of the above technical solution:

[0018] The right side of the shell is fixedly connected with a switch box, and the right side of the switch box is rotatably connected with a dust cover.

[0019] As a further description of the above technical solution:

[0020] A buffer pad is fixedly connected to the top of the mounting seat, and the top of the buffer pad is arranged on the bottom of the shell.

[0021] The utility model has the following beneficial effects:

[0022] 1. In the utility model, when cleaning the filter, the impeller is rotated counterclockwise, and then the cylinder is started to drive the connecting part to squeeze inward, so that it drives the rotating plate to rotate, and the slider pushes the cleaning brush to move left and right on the surface of the filter. The external dust is cleaned by the reverse blowing gas and the cleaning brush. At the same time, in order to ensure the sound insulation effect inside the shell, a large amount of noise can be absorbed by the sound insulation cotton to improve the sound insulation effect.

[0023] 2. In the utility model, the outer shell is quickly limited by inserting the plug plate into the plug slot, and then the screw is rotated inward to drive the inclined block to slide inward, and the extension plate is driven to expand to both sides by the inclined block, thereby driving the plug rod and the plug plate to engage and connect, and the installation and fixation of the fan is quickly completed. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 A three-dimensional diagram of a centrifugal fan proposed by the utility model;

[0025] Figure 2 This is a partial structural disassembly diagram of a centrifugal fan proposed by the utility model;

[0026] Figure 3 The utility model is a schematic structural diagram of a fixed base of a centrifugal fan.

[0027] Legend:

[0028] 1. Shell; 2. Installation mechanism; 201. Plug plate; 202. Plug slot; 203. Limit plate; 204. Extension plate; 205. Connecting plate; 206. Plug rod; 207. Spring; 208. Screw; 209. Inclined block; 3. Mounting seat; 4. Air outlet; 5. Air inlet frame; 6. Filter; 7. Fixing plate; 8. Cylinder; 9. Connector; 10. Turn plate; 11. Rotating shaft; 12. Slider; 13. Cleaning brush; 14. Mounting plate; 15. Motor; 16. Impeller; 17. Reinforcement plate 1; 18. Reinforcement bolt; 19. Top cover; 20. Sound insulation cotton; 21. Turning block; 22. Handle; 23. Plug box; 24. Reinforcement plate 2; 25. Bolt; 26. Switch box; 27. Dust cover; 28. Buffer pad. DETAILED DESCRIPTION

[0029] 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.

[0030] Reference Figure 1 and Figure 2 , an embodiment provided by the utility model: a centrifugal fan comprises a shell 1 and a mounting seat 3, the front side of the shell 1 is connected with an air outlet 4, the rear side of the shell 1 is connected with an air intake frame 5, the front side of the interior of the air intake frame 5 is fixedly connected with a filter screen 6, the left side of the interior of the air intake frame 5 is fixedly connected with a fixing plate 7, the upper and lower sides of the fixing plate 7 are fixedly connected with cylinders 8, one end of the two cylinders 8 are fixedly connected with connecting members 9, the right sides of the two connecting members 9 are rotatably connected with a rotating plate 10, the middle parts of the two rotating plates 10 are rotatably connected through a rotating shaft 11, the right sides of the two rotating plates 10 are rotatably connected with a slider 12, the right sides of the two sliders 12 are slidably connected with a cleaning brush 13, the shell 1 A mounting plate 14 is fixedly connected to the inner side, a motor 15 is fixedly connected to the right side of the mounting plate 14, one end of the motor 15 passes through the left side of the mounting plate 14 and is fixedly connected to an impeller 16, a top cover 19 is fixedly connected to the top of the outer casing 1, a mounting mechanism 2 is provided on the top of the mounting seat 3, the mounting mechanism 2 is used to facilitate the installation and disassembly of the fan, a sound insulation cotton 20 is fixedly connected to the bottom of the top cover 19, a power box 23 is fixedly connected to the right side of the outer casing 1, a buffer pad 28 is fixedly connected to the top of the mounting seat 3, and the top of the buffer pad 28 is arranged at the bottom of the outer casing 1, the outer wall of the motor 15 is fixedly connected to a reinforcing plate 17, and the right sides of the two reinforcing plates 17 are threadedly connected with reinforcing bolts 18.

[0031] Specifically, an air outlet 4 is connected to the front side of the housing 1, and the inhaled air can be quickly discharged through the air outlet 4. An air intake frame 5 is installed on the rear side of the housing 1, and the air intake is sealed by the frame. A filter screen 6 is installed at the position of the air intake, and the inhaled air can be filtered through the filter screen 6; a fixing plate 7 is installed on the left side of the inside of the air intake frame 5, and a cylinder 8 is installed on the upper and lower sides of the fixing plate 7. The model of the cylinder 8 is SMC CJ2; The connecting member 9 is installed and fixed by the cylinder 8, and the right side of the connecting member 9 is connected to the rotating plate 10. The rotating plates 10 are intertwined and connected to the center position through the rotating shaft 11. The slider 12 is installed on the right side of the two rotating plates 10. The slider 12 is installed on the left side of the cleaning brush 13. In this way, when the cylinder 8 is started to drive the rotating plate 10 to squeeze, the cleaning brush 13 can be driven to move left and right on the surface of the filter 6; A mounting plate 14 is fixed inside the shell 1, and the motor 15 is installed and connected through the mounting plate 14. The model of the motor 15 is 28BYJ-48. The output end of the motor 15 is connected and installed with the impeller 16. When the filter 6 is cleaned, the impeller 16 is rotated counterclockwise to cooperate with the cleaning brush 13 to clean the external dust. In order to ensure the sound insulation effect inside the shell 1, a top cover 19 is installed on the top of the shell 1, and a sound insulation cotton 20 is installed at the bottom of the top cover 19. The sound insulation cotton 20 can absorb a lot of noise and improve the sound insulation effect.

[0032] Reference Figure 1 and Figure 3 The mounting mechanism 2 includes a plurality of plug plates 201, the tops of the plurality of plug plates 201 are fixedly connected to the four bottom corners of the shell 1, and plug slots 202 are provided at the four top corners of the mounting seat 3. The left and right sides of the interior of the mounting seat 3 are fixedly connected to limit plates 203, and the interiors of the two limit plates 203 are slidably connected to extension plates 204, and the two extension plates 204 are fixedly connected to the opposite sides thereof with connecting plates 205, and the opposite sides of the two connecting plates 205 are fixedly connected to a plurality of plug rods 206, and the outer walls of the plurality of plug rods 206 are fixedly connected to springs 207, and the right side of the mounting seat 3 is threadedly connected to a screw rod 208, and the left end of the screw rod 208 passes through the right side of the mounting seat 3 and is rotatably connected to a ramp block 209.

[0033] Specifically, plug boards 201 are installed at the four corners of the bottom of the shell 1, and plug slots 202 are opened at the four corners of the top of the mounting seat 3 corresponding to the positions of the plug boards 201. By plugging the plug boards 201 into the plug slots 202, the limiting processing of the shell 1 is quickly completed; then, limiting plates 203 are fixed on both sides of the inside of the mounting seat 3, and the extension plate 204 is slidably installed through the limiting plates 203, and the end of the extension plate 204 is fixed to the connecting plate 205, and the connecting plate 205 is fixed at the position corresponding to the plug board 201 A plug rod 206 is installed, and a spring 207 is fixedly installed on the outer wall of the plug rod 206, and the plug rod 206 is retracted inward by the left and right movements of the spring 207; a screw rod 208 is installed on the right side of the mounting seat 3, which is connected to the inclined block 209 through the screw rod 208. When the screw rod 208 is rotated inward and drives the inclined block 209 to slide inward, the extension plate 204 is driven to expand to both sides through the inclined block 209, thereby driving the plug rod 206 to engage and connect with the plug plate 201, and quickly completing the installation and fixation of the fan.

[0034] Reference Figure 1 and Figure 3 A plurality of rotating blocks 21 are fixedly connected to the left and right sides of the shell 1, and handles 22 are rotatably connected between the adjacent rotating blocks 21. A plurality of reinforcing plates 24 are fixedly connected to the front and rear sides of the mounting base 3, and bolts 25 are threadedly connected to the tops of the plurality of reinforcing plates 24. A switch box 26 is fixedly connected to the right side of the shell 1, and a dust cover 27 is rotatably connected to the right side of the switch box 26.

[0035] Specifically, the switch box 26 can be used to facilitate simple operation and control of the operating equipment on the entire device. At the same time, a dust cover 27 is installed on the right side of the switch box 26. The dust cover 27 can prevent external dust from falling into the switch box 26, thereby improving the service life of the switch box 26.

[0036] Working principle: First, when cleaning the filter 6, the impeller 16 is rotated counterclockwise, and then the cylinder 8 is started to drive the connecting part 9 to squeeze inward, so that it drives the rotating plate 10 to rotate, and the slider 12 pushes the cleaning brush 13 to move left and right on the surface of the filter 6. The external dust is cleaned by the reverse blowing gas and the cleaning brush 13. At the same time, in order to ensure the sound insulation effect inside the shell 1, a large amount of noise can be absorbed by the sound insulation cotton 20 to improve the sound insulation effect.

[0037] By inserting the plug plate 201 into the plug slot 202, the limiting process of the housing 1 is quickly completed, and then the screw rod 208 is rotated inward to drive the inclined block 209 to slide inward, and the extension plate 204 is driven to expand to both sides through the inclined block 209, thereby driving the plug rod 206 to engage with the plug plate 201, and quickly completing the installation and fixation of the fan.

[0038] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A centrifugal fan, comprising a housing (1) and a mounting seat (3), characterized in that: The front side of the shell (1) is connected to an air outlet (4), the rear side of the shell (1) is connected to an air intake frame (5), the front side of the interior of the air intake frame (5) is fixedly connected to a filter screen (6), the left side of the interior of the air intake frame (5) is fixedly connected to a fixing plate (7), the upper and lower sides of the fixing plate (7) are fixedly connected to cylinders (8), one end of the two cylinders (8) is fixedly connected to a connecting piece (9), the right sides of the two connecting pieces (9) are rotatably connected to a rotating plate (10), the middle parts of the two rotating plates (10) are rotatably connected via a rotating shaft (11), and the two rotating plates (10) are fixedly connected to the air outlet (4) and the air intake frame (5) is fixedly connected to the air outlet (4). The right side of the plate (10) is rotatably connected to a slider (12), and the right sides of the two sliders (12) are slidably connected to a cleaning brush (13). The inner side of the housing (1) is fixedly connected to a mounting plate (14), and the right side of the mounting plate (14) is fixedly connected to a motor (15), one end of the motor (15) passes through the left side of the mounting plate (14) and is fixedly connected to an impeller (16). The top of the housing (1) is fixedly connected to a top cover (19), and a mounting mechanism (2) is provided on the top of the mounting seat (3), and the mounting mechanism (2) is used to facilitate the installation and disassembly of the fan.

2. A centrifugal fan according to claim 1, characterized in that: The mounting mechanism (2) comprises a plurality of plug plates (201), the tops of the plurality of plug plates (201) are fixedly connected to the four bottom corners of the housing (1), the four top corners of the mounting seat (3) are provided with plug slots (202), the left and right sides of the interior of the mounting seat (3) are fixedly connected to limit plates (203), the interiors of the two limit plates (203) are slidably connected to extension plates (204), the two extension plates (204) are fixedly connected to the opposite sides thereof with connecting plates (205), the two connecting plates (205) are fixedly connected to the opposite sides thereof with a plurality of plug rods (206), the outer walls of the plurality of plug rods (206) are fixedly connected to springs (207), the right side of the mounting seat (3) is threadedly connected to a screw rod (208), the left end of the screw rod (208) passes through the right side of the mounting seat (3) and is rotatably connected to a ramp block (209).

3. A centrifugal fan according to claim 1, characterized in that: The outer wall of the motor (15) is fixedly connected with a reinforcing plate (17), and the right sides of the two reinforcing plates (17) are threadedly connected with reinforcing bolts (18).

4. A centrifugal fan according to claim 1, characterized in that: The bottom of the top cover (19) is fixedly connected with a sound insulation cotton (20), and the right side of the shell (1) is fixedly connected with a power box (23).

5. A centrifugal fan according to claim 1, characterized in that: A plurality of rotating blocks (21) are fixedly connected to both left and right sides of the housing (1), and handles (22) are rotatably connected between adjacent rotating blocks (21).

6. A centrifugal fan according to claim 1, characterized in that: A plurality of reinforcing plates (24) are fixedly connected to both the front and rear sides of the mounting seat (3), and bolts (25) are threadedly connected to the tops of the plurality of reinforcing plates (24).

7. A centrifugal fan according to claim 1, characterized in that: A switch box (26) is fixedly connected to the right side of the housing (1), and a dust cover (27) is rotatably connected to the right side of the switch box (26).

8. The centrifugal fan according to claim 1, characterized in that: A buffer pad (28) is fixedly connected to the top of the mounting seat (3), and the top of the buffer pad (28) is arranged on the bottom of the housing (1).

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