Centrifugal fan with good sealing performance

Abstract

The centrifugal fan with the good sealing performance comprises a base, a fan body is arranged on the upper end face of the base, a supporting platform is arranged on the upper end face of the base, a rotating motor is arranged on the upper end face of the supporting platform, and a motor shaft of the rotating motor is arranged in the fan body. Three wind power control assemblies are arranged on the fan main body; a dustproof assembly; the dustproof assembly comprises a dustproof frame body, a circular groove is formed in the dustproof frame body, a supporting circular plate is arranged on the fan body, the supporting circular plate is slidably connected into the circular groove, a plurality of clamping grooves are formed in the dustproof frame body, and a plurality of extension blocks are arranged on the fan body. The dust-proof device has the advantages that dust contained in air sucked by the fan is blocked by the dust-proof assembly, the dust-proof net can be dismounted, mounted and replaced, use of workers is facilitated, meanwhile, the air volume generated by the fan can be controlled, the workers can conveniently adjust the air volume according to requirements, and the use requirements of the workers are met.

Description

Technical Field

[0001] The utility model relates to the technical field of centrifugal fans, in particular to a centrifugal fan with good sealing performance. Background Technique

[0002] A centrifugal fan is a machine that relies on the input mechanical energy to increase the gas pressure and discharge the 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, ventilation and induced draft of boilers and industrial furnaces, cooling and ventilation in air conditioning equipment and household electrical appliances, drying and selection of grains, air source of wind tunnels and inflation and propulsion of hovercrafts, etc.

[0003] When the existing centrifugal fan absorbs air, it simultaneously sucks dust and impurities in the environment into the machine, which will cause damage to the machine, reduce the service life of the machine. At the same time, the wind force of the air outlet is fixed and cannot be adjusted, unable to meet the use requirements of the staff. Content of the Utility Model

[0004] Aiming at the deficiencies in the prior art, the utility model provides a centrifugal fan with good sealing performance.

[0005] In order to achieve the above purpose, the utility model adopts the following technical scheme:

[0006] A centrifugal fan with good sealing performance, comprising: a base, a fan main body is arranged on the upper end surface of the base, a support platform is arranged on the upper end surface of the base, a rotating motor is arranged on the upper end surface of the support platform, the motor shaft of the rotating motor is arranged inside the fan main body, and two wind force control components are arranged on the fan main body; a dust-proof component; the dust-proof component includes a dust-proof frame body, a circular groove is arranged on the dust-proof frame body, a support circular plate is arranged on the fan main body, the support circular plate is slidably connected in the circular groove, a plurality of clamping grooves are arranged on the dust-proof frame body, a plurality of extension blocks are arranged on the fan main body, a limiting port is arranged at one end of each of the plurality of extension blocks away from the fan main body, a clamping block is slidably connected in each of the plurality of limiting ports, one end of each of the plurality of clamping blocks is threadedly connected with a threaded rod, and the other end of each of the plurality of threaded rods rotatably penetrates through the extension block.

[0007] To better achieve the above object, the utility model adopts the following further technical solution: The wind control assembly includes a control cavity provided at the air outlet of the fan main body. A screw rod is rotatably penetrated through the fan main body. One end of the screw rod is fixedly connected with a driving gear, and the driving gear is rotatably connected in the control cavity. A rotating rod is rotatably penetrated through the fan main body. One end of the rotating rod is fixedly connected with a driven gear, and the driven gear meshes with the driving gear. The other end of the rotating rod away from the driven gear is rotatably connected to the other end of the air outlet of the fan main body. A windproof plate is fixedly connected to the rotating rod. A sliding port is provided in the control cavity, and a sliding block is slidably connected in the sliding port. One end of the sliding block is fixedly connected with a spring, and the other end of the spring is fixedly connected in the sliding port. One end of the sliding block close to the sliding port is fixedly connected with a pull rod, and the other end of the pull rod away from the sliding block penetrates through the fan main body. A limiting groove is provided at one end of the rotating rod close to the sliding block.

[0008] To better achieve the above object, the utility model adopts the following further technical solution: A plurality of cushion feet are provided on the lower end surface of the base.

[0009] To better achieve the above object, the utility model adopts the following further technical solution: A knob is provided at the end of the threaded rod away from the extension block.

[0010] To better achieve the above object, the utility model adopts the following further technical solution: The windproof plate is made of stainless steel material.

[0011] To better achieve the above object, the utility model adopts the following further technical solution: A sealing layer is provided between the circular groove and the supporting circular plate.

[0012] The advantages of the utility model are as follows: The dust-proof component blocks the dust contained in the wind inhaled by the fan, and the dust-proof net can be disassembled, installed and replaced, which is convenient for the staff to use. At the same time, the air volume generated by the fan can be controlled, which is convenient for the staff to adjust the air volume according to the needs, meeting the use requirements of the staff. Description of the Drawings

[0013] Figure 1 It is a three-dimensional structural schematic diagram of a centrifugal fan with good sealing performance in an embodiment of the utility model.

[0014] Figure 2 It is a three-dimensional structural schematic diagram of a dust-proof component of a centrifugal fan with good sealing performance in an embodiment of the utility model.

[0015] Figure 3 It is a three-dimensional structural sectional view of a wind control component of a centrifugal fan with good sealing performance in an embodiment of the utility model.

[0016] In the above-mentioned drawings: 1 base, 2 fan main body, 3 support platform, 4 rotation motor, 5 dust-proof housing, 6 circular groove, 7 support circular plate, 8 card slot, 9 extension block, 10 limiting port, 11 clamping block, 12 threaded rod, 13 control cavity, 14 screw rod, 15 driving gear, 16 rotating rod, 17 driven gear, 18 wind-proof plate, 19 foot pad, 20 knob, 21 sliding port, 22 sliding block, 23 spring, 24 pull rod, 25 limiting groove. Detailed implementation manner

[0017] The technical solutions in the present utility model will be further described below in conjunction with the drawings and embodiments.

[0018] As Figures 1-3As shown in the figure, a centrifugal fan with good sealing performance includes: a base 1, a fan main body 2 is provided on the upper end surface of the base 1, and a plurality of foot pads 19 are provided on the lower end surface of the base 1. Through the stabilizing effect of the foot pads 19, the staff can stably place the device at a designated position without shaking. A support platform 3 is provided on the upper end surface of the base 1, and a rotating motor 4 is provided on the upper end surface of the support platform 3. The rotating motor 4 is a prior art. By turning on the rotating motor 4, an object connected to its motor shaft can be rotated. The motor shaft of the rotating motor 4 is arranged inside the fan main body 2. Through the setting of the above structure, the fan inside the fan main body 2 can be driven to rotate and suck air by the rotating motor 4. Two wind control components are provided on the fan main body 2; the wind control component includes a control cavity 13 provided at the air outlet of the fan main body 2. A screw rod 14 penetrates through the fan main body 2 rotatably. One end of the screw rod 14 is fixedly connected to a driving gear 15. The driving gear 15 is rotatably connected inside the control cavity 13. A rotating rod 16 penetrates through the fan main body 2 rotatably. One end of the rotating rod 16 is fixedly connected to a driven gear 17. The driven gear 17 meshes with the driving gear 15. The other end of the rotating rod 16 away from the driven gear 17 is rotatably connected to the other end of the air outlet of the fan main body 2. Through the above structure, when the screw rod 14 rotates, the driving gear 15 will rotate, thereby driving the driven gear 17 meshing with it to rotate, and driving the rotating rod 16 thereon to rotate, so that the rotation of the wind deflector 18 can be completed. A wind deflector 18 is fixedly connected to the rotating rod 16. The wind deflector 18 is made of stainless steel material. Through the corrosion resistance of the stainless steel material, the wind damage received by the wind deflector 18 can be reduced, and the service life of the device is extended; a sliding port 21 is provided inside the control cavity 13. A sliding block 22 is slidably connected inside the sliding port 21. One end of the sliding block 22 is fixedly connected to a spring 23. The other end of the spring 23 is fixedly connected inside the sliding port 21. One end of the sliding block 22 close to the sliding port 21 is fixedly connected to a pull rod 24. The end of the pull rod 24 away from the sliding block 22 penetrates through the fan main body 2. A limiting groove 25 is provided on the end of the rotating rod 16 close to the sliding block 22. Through the above structure, when the wind deflector 18 rotates to a designated position, the sliding block 22 can enter the limiting groove 25 to complete the fixing work of the rotating rod 16, preventing the wind deflector 18 from rotating automatically due to strong wind, resulting in poor wind control effect. A dust-proof component, the dust-proof component includes a dust-proof frame body 5. A circular groove 6 is provided on the dust-proof frame body 5. A support circular plate 7 is provided on the fan main body 2. The support circular plate 7 is slidably connected inside the circular groove 6. A sealing layer is provided between the circular groove 6 and the support circular plate 7. Through the setting of the sealing layer, the air in the environment can be reduced from entering the fan main body 2 through the gap between the circular groove 6 and the support circular plate 7;A plurality of card slots 8 are provided on the dust-proof housing 5, and a plurality of extension blocks 9 are provided on the blower main body 2. A limiting port 10 is provided at one end of each of the plurality of extension blocks 9 away from the blower main body 2. A clamping block 11 is slidably connected in each of the plurality of limiting ports 10. One end of each of the plurality of clamping blocks 11 is threadedly connected to a threaded rod 12. A knob 20 is provided at one end of the threaded rod 12 away from the extension block 9. By rotating the knob 20, the staff can easily rotate the threaded rod 12, thereby completing the fixing work of the dust-proof housing 5. The other ends of the plurality of threaded rods 12 all rotatably penetrate through the extension block 9. Through the above structure, the installation and disassembly work of the dust-proof housing 5 can be completed, meeting the use requirements of the staff.

[0019] When the utility model is in use, the staff first stably place the centrifugal blower at a designated position through the foot pad 19, then take out the dust-proof housing 5, and push it into the support circular plate 7 through the circular groove 6 thereon. Then the staff can rotate the knob 20, and easily rotate the threaded rod 12 through the knob 20, so that the clamping block 11 slides in the limiting port 10 and finally enters the card slot 8. Repeat the above operation to rotate all the remaining clamping blocks 11 into the card slot 8, thereby completing the dust-proof work of the air inlet of the blower main body 2. Then the staff can turn on the rotating motor 4 and the blower main body 2 to start extracting the air in the environment and then discharging it from the air outlet of the blower main body 2. At this time, the staff first pull the pull rod 24 to pull out the sliding block 22 from the limiting slot 25, then rotate the screw rod 14 to drive the driving gear 15 to rotate and make the driven gear 17 rotate, thereby driving the rotating rod 16 to rotate, thereby completing the adjustment work of the wind-proof plate 18. Then release the pull rod 24, and through the reset action of the spring 23, the sliding block 22 re-enters the limiting slot 25 and is fixed. Repeat the above operation to adjust the two wind-proof plates 18 to complete the work of wind force control, meeting the use requirements of the staff.

Claims

1. A centrifugal fan with good sealing performance, characterized in that, Comprising: A base (1), on the upper end face of the base (1) there is provided a main fan body (2), on the upper end face of the base (1) there is provided a support platform (3), on the upper end face of the support platform (3) there is provided a rotating motor (4), the motor shaft of the rotating motor (4) is arranged inside the main fan body (2), and there are provided two wind control components on the main fan body (2); a dust-proof component; the dust-proof component includes a dust-proof frame body (5), on the dust-proof frame body (5) there is provided a circular groove (6), on the main fan body (2) there is provided a support circular plate (7), the support circular plate (7) is slidably connected inside the circular groove (6), on the dust-proof frame body (5) there are provided a plurality of card slots (8), on the main fan body (2) there are provided a plurality of extension blocks (9), one end of each of the plurality of extension blocks (9) away from the main fan body (2) is provided with a limiting port (10), inside each of the plurality of limiting ports (10) there is slidably connected a clamping block (11), one end of each of the plurality of clamping blocks (11) is threadedly connected with a threaded rod (12), and the other end of each of the plurality of threaded rods (12) rotatably penetrates through the extension block (9).

2. The centrifugal fan with good sealing performance according to claim 1, wherein, The wind control component includes a control cavity (13) provided at the air outlet of the main fan body (2), the main fan body (2) is rotatably penetrated by a screw rod (14), one end of the screw rod (14) is fixedly connected with a driving gear (15), the driving gear (15) is rotatably connected inside the control cavity (13), the main fan body (2) is rotatably penetrated by a rotating rod (16), one end of the rotating rod (16) is fixedly connected with a driven gear (17), the driven gear (17) meshes with the driving gear (15), the other end of the rotating rod (16) away from the driven gear (17) is rotatably connected to the other end of the air outlet of the main fan body (2), a wind-proof plate (18) is fixedly connected to the rotating rod (16), a sliding port (21) is provided inside the control cavity (13), inside the sliding port (21) there is slidably connected a sliding block (22), one end of the sliding block (22) is fixedly connected with a spring (23), the other end of the spring (23) is fixedly connected inside the sliding port (21), one end of the sliding block (22) close to the sliding port (21) is fixedly connected with a pull rod (24), the other end of the pull rod (24) away from the sliding block (22) penetrates through the main fan body (2), and a limiting groove (25) is provided on the end of the rotating rod (16) close to the sliding block (22).

3. The centrifugal fan with good sealing performance according to claim 1, characterized in that, A plurality of cushion feet (19) are provided on the lower end face of the base (1).

4. A centrifugal fan with good sealing performance according to claim 1, characterized in that, A knob (20) is provided at the end of the threaded rod (12) away from the extension block (9).

5. The centrifugal fan with good sealing performance according to claim 2, wherein The wind-proof plate (18) is made of stainless steel material.

6. The centrifugal fan with good sealing performance according to claim 1, wherein, A sealing layer is provided between the circular groove (6) and the support circular plate (7).

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