Dustproof fan

Abstract

The utility model discloses a dustproof fan, and relates to the technical field of fans. After the driving machine is started, the transmission shaft and the driving wheel on the circumferential surface of the transmission shaft can be driven to do circular motion, when the driving wheel rotates, the transmission wheel and the positioning shaft in the transmission wheel can do circular motion, and the rotation of the positioning shaft can drive the fan blades to do circular motion, so that air flow can be driven, and indoor and outdoor air exchange is realized; furthermore, when a transmission shaft rotates, an extension shaft, a connecting plate on the circumferential surface of the extension shaft and a brush are driven to rotate, so that dust can be prevented from staying on the surface of a protective plate and entering the protective cover during use, the cleaning and cleaning frequency can be reduced, and the working efficiency is high; and by disassembling the bolts, the protective cover and the protective plate can be disassembled, so that combined installation is facilitated, and cleaning and cleaning are facilitated.

Description

Technical Field

[0001] The utility model relates to the technical field of fans, in particular to a dust-proof fan. Background Art

[0002] Exhaust fans are a type of air conditioning appliance that uses an electric motor to drive the airflow by rotating the fan blades to exchange indoor and outdoor air. They are also called ventilation fans. The purpose of exhaust is to remove dirty air in the room and adjust the temperature, humidity and sensory effects. Exhaust fans are widely used in homes and public places.

[0003] There are still some problems when using exhaust fans, for example, the dustproof effect is poor. After a long period of use, a large amount of dust will remain inside the exhaust fan, affecting its use effect and service life. At the same time, some exhaust fans are also inconvenient to install and disassemble when in use, which brings certain inconveniences to maintenance and cleaning work. The practicality needs to be improved, the structure lacks rationality, and it is difficult to meet the user's needs. For this reason, we propose a dust-proof fan. Utility Model Content

[0004] The purpose of the utility model is to solve the problems mentioned in the above background technology and provide a dust-proof fan.

[0005] In order to achieve the above-mentioned purpose, the utility model specifically adopts the following technical solutions:

[0006] A dust-proof fan comprises a protective cover, a protective plate is detachably mounted on the front side of the protective cover by bolts, a fan mechanism is mounted inside the protective cover, the fan mechanism comprises a driving machine, a driving shaft of the driving machine is connected to a transmission shaft through a transmission shaft, a driving wheel is sleeved on the circumferential surface of the transmission shaft, three transmission wheels are mounted on the outer side of the driving wheel, a positioning shaft is mounted inside each of the transmission wheels, a plurality of fan blades are evenly mounted on the circumferential surface of the outer side of the positioning shaft, a positioning plate is mounted on the rear side of the three positioning shafts, an extension shaft is mounted on the outer end of the transmission shaft, three connecting plates are sleeved on the extension shaft, two brushes are mounted on the rear side of each of the connecting plates; a support seat is mounted inside the protective cover.

[0007] Furthermore, threaded holes arranged in concentric circles are provided near the outer edge of the protective cover and on the circumferential outer wall of the protective plate, and the bolts are connected to the threaded holes by threads.

[0008] Furthermore, a plurality of through grooves are evenly arranged in a circumference inside the protective plate, and a dustproof net is installed inside each through groove.

[0009] Furthermore, a plurality of drive teeth are evenly installed on the circumferential surface of the drive wheel, and a plurality of transmission teeth are evenly installed on the circumferential surface of the transmission wheel. The drive teeth and the transmission teeth are meshed and connected.

[0010] Furthermore, bearings are sleeved on the circumferential surfaces at the intersections of the rear sides of each positioning shaft and the positioning plate.

[0011] Furthermore, the inner ends of the three connecting plates are connected with a positioning cylinder, and the positioning cylinder is in interference fit with the extension shaft.

[0012] Furthermore, a positioning groove is formed inside the protective cover. The support seat is in interference fit with the positioning groove, and a plurality of through holes are evenly formed inside the support seat.

[0013] The beneficial effects of the present utility model are as follows:

[0014] 1. After starting the driver of the present utility model, the drive shaft and the drive wheel on its circumferential surface can be driven to perform circular motion. When the drive wheel rotates, the transmission wheel and the positioning shaft inside it will perform circular motion, and the rotation of the positioning shaft will drive the fan blade to perform circular motion, so as to drive the air flow and realize the exchange of indoor and outdoor air, so as to achieve the purpose of adjusting temperature, humidity and feeling effect. Moreover, when the drive shaft rotates, the extension shaft, the connecting plate on its circumferential surface and the brush will be driven to rotate, so as to avoid dust staying on the surface of the protective plate during use and then entering the inside of the protective cover, that is, the cleaning and cleaning frequency can be reduced, and the working efficiency is high.

[0015] 2. Under the action of the bolts, the present utility model can ensure the connection stability between the protective cover and the protective plate. By disassembling the bolts, the disassembly of the protective cover and the protective plate can be realized, which is convenient for combined installation, cleaning and washing, and can protect the internal fan mechanism under the cooperation of the protective cover and the protective plate. Description of the Drawings

[0016] Figure 1 is the three-dimensional schematic diagram of the present utility model;

[0017] Figure 2 is the side cross-sectional view of the present utility model;

[0018] Figure 3 is the three-dimensional schematic diagram of the fan mechanism in the present utility model;

[0019] Figure 4 is the three-dimensional schematic diagram of the present utility model after removing the fan mechanism.

[0020] Figure numerals: 1. Protective cover; 2. Bolt; 3. Protective plate; 4. Fan mechanism; 401. Driving machine; 402. Transmission shaft; 403. Driving wheel; 404. Transmission wheel; 405. Positioning shaft; 406. Fan blade; 407. Positioning plate; 408. Extension shaft; 409. Connecting plate; 410. Brush; 5. Support seat. DETAILED DESCRIPTION

[0021] In order to make the purpose, technical solution and advantages of the embodiments of the present utility model clearer, the technical solution in the embodiments of the present utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the present utility model.

[0022] See also Figure 1 - Figure 4 The utility model provides a dust-proof fan, comprising a protective cover 1, a protective plate 3 is detachably mounted on the front of the protective cover 1 through bolts 2, and a supporting seat 5 is installed inside the protective cover 1.

[0023] The bolts 2 can ensure the connection stability between the protective cover 1 and the protective plate 3. By removing the bolts 2, the protective cover 1 and the protective plate 3 can be disassembled, which is convenient for combined installation and cleaning. With the cooperation of the protective cover 1 and the protective plate 3, the internal fan mechanism 4 can be protected.

[0024] A fan mechanism 4 is installed inside the protective cover 1, and the fan mechanism 4 includes a driving machine 401. The outer side of the driving shaft of the driving machine 401 is connected to a transmission shaft 402, and the circumferential surface of the transmission shaft 402 is sleeved with a driving wheel 403. The outer side of the driving wheel 403 is installed with three transmission wheels 404, and a positioning shaft 405 is installed inside each of the transmission wheels 404. A plurality of fan blades 406 are evenly installed on the circumferential surface of the outer side of the positioning shaft 405, and a positioning plate 407 is installed on the rear side of the three positioning shafts 405. An extension shaft 408 is installed on the outer end of the transmission shaft 402, and three connecting plates 409 are sleeved on the extension shaft 408, and two brushes 410 are installed on the rear side of each connecting plate 409.

[0025] Under the action of the support base 5, the installation stability of the driving machine 401 can be ensured. Under the action of the driving machine 401, the rotation purpose of the transmission shaft 402 can be achieved. Under the action of the transmission shaft 402, the rotation purpose of the driving wheel 403 can be achieved. Under the action of the driving wheel 403, the rotation purpose of the transmission wheel 404 can be achieved. Under the action of the transmission wheel 404, the rotation purpose of the positioning shaft 405 can be achieved. Under the action of the positioning shaft 405, the installation stability of the fan blade 406 can be ensured. Under the action of the positioning plate 407, the installation stability of the positioning shaft 405 can be ensured. Under the action of the transmission shaft 402, the installation stability of the extension shaft 408 can be ensured. Under the action of the extension shaft 408, the installation stability of the connecting plate 409 can be ensured. Under the action of the connecting plate 409, the installation stability of the brush 410 can be ensured. Under the action of the brush 410, the outer side of the protection plate 3 can be wiped. After starting the driving machine 401, it can drive the transmission shaft 402 and the driving wheel 403 on its circumferential surface to perform circular motion. When the driving wheel 403 rotates, it will cause the transmission wheel 404 and the positioning shaft 405 inside it to perform circular motion, and the rotation of the positioning shaft 405 will drive the fan blade 406 to perform circular motion, thereby being able to drive the air flow and realize the exchange of indoor and outdoor air, so as to achieve the purpose of adjusting temperature, humidity and feeling effect. Moreover, when the transmission shaft 402 rotates, it will drive the extension shaft 408, the connecting plate 409 on its circumferential surface and the brush 410 to rotate, so as to avoid dust staying on the surface of the protection plate 3 during use and then entering the inside of the protective cover 1, that is, it can reduce the frequency of cleaning and cleaning, and has high work efficiency.

[0026] In this embodiment, preferably, threaded holes arranged in concentric circles are provided on the outer side edge of the protective cover 1 close to the outside and on the circumferential outer wall of the protection plate 3, and the bolt 2 is threadedly connected with the threaded holes; the connection stability between the protective cover 1 and the protection plate 3 can be ensured by the cooperation of the threaded holes and the bolt 2.

[0027] In this embodiment, preferably, a plurality of through grooves are evenly arranged in a circumferential manner inside the protection plate 3, and a dust-proof net is installed inside each through groove; the purpose of ventilation can be achieved under the action of the through grooves, and the purpose of dust prevention is achieved by setting the dust-proof net.

[0028] In this embodiment, preferably, a plurality of driving teeth are evenly installed on the circumferential surface of the driving wheel 403, and a plurality of transmission teeth are evenly installed on the circumferential surface of the transmission wheel 404, and the driving teeth and the transmission teeth are meshed and connected; the transmission stability can be ensured by the cooperation of the driving teeth and the transmission teeth.

[0029] In this embodiment, preferably, bearings are sleeved on the circumferential surfaces at the intersections of the rear sides of each positioning shaft 405 and the positioning plate 407; under the action of the bearings, the installation stability of the positioning shaft 405 can be ensured and the rotation of the positioning shaft 405 will not be affected.

[0030] In this embodiment, preferably, the inner ends of the three connecting plates 409 are connected with positioning cylinders, and the positioning cylinders are in interference fit with the extension shaft 408; the positioning cylinders can ensure the transmission stability of the extension shaft 408 to the connecting plates 409.

[0031] In this embodiment, preferably, a positioning groove is formed inside the protective cover 1, the support seat 5 is in interference fit with the positioning groove, and a plurality of through holes are uniformly formed inside the support seat 5; the positioning groove can ensure the installation stability of the support seat 5, and the through holes provided can realize the air circulation inside the protective cover 1.

[0032] The working principle and usage process of the present utility model: When the device is in use, after starting the driving machine 401, it can drive the transmission shaft 402 and the driving wheel 403 on its circumferential surface to perform circular motion. When the driving wheel 403 rotates, it will cause the transmission wheel 404 and the positioning shaft 405 inside it to perform circular motion, and the rotation of the positioning shaft 405 will drive the fan blades 406 to perform circular motion, thereby being able to drive the air flow and realize the exchange of indoor and outdoor air, so as to achieve the purpose of adjusting temperature, humidity and sensory effects. Moreover, when the transmission shaft 402 rotates, it will drive the extension shaft 408, the connecting plates 409 on its circumferential surface and the brush 410 to rotate, thereby being able to prevent dust from staying on the surface of the protective plate 3 during use and then entering the inside of the protective cover 1, that is, it can reduce the cleaning frequency and has high working efficiency; the bolt 2 can ensure the connection stability between the protective cover 1 and the protective plate 3. By disassembling the bolt 2, the protective cover 1 and the protective plate 3 can be disassembled, which is convenient for combined installation, beneficial to cleaning and washing, and the protective cover 1 and the protective plate 3 can cooperate to protect the internal fan mechanism 4.

[0033] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present utility model. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present utility model. Therefore, the present utility model will not be limited to these embodiments shown herein, but will be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A dust-proof fan, characterized in that: The invention comprises a protective cover (1), a protective plate (3) is detachably mounted on the front of the protective cover (1) by means of bolts (2), a fan mechanism (4) is mounted inside the protective cover (1), the fan mechanism (4) comprises a driving machine (401), a driving shaft of the driving machine (401) is connected to a transmission shaft (402) in a transmission manner on the outer side, a driving wheel (403) is sleeved on the circumferential surface of the transmission shaft (402), three transmission wheels (404) are installed in a transmission manner on the outer side of the driving wheel (403), and each of the transmission wheels (404) is connected to a transmission shaft (402) on the outer side of the driving shaft (402). 4) are all installed with positioning shafts (405) inside, and a plurality of fan blades (406) are evenly installed on the circumferential surface outside the positioning shafts (405), and positioning plates (407) are installed on the rear sides of the three positioning shafts (405), and an extension shaft (408) is installed on the outer end of the transmission shaft (402), and three connecting plates (409) are sleeved on the extension shaft (408), and two brushes (410) are installed on the rear side of each connecting plate (409); a support seat (5) is installed inside the protective cover (1).

2. The dust-proof fan according to claim 1, wherein: The protective cover (1) is provided with threaded holes arranged in a concentric circle near the outer edge thereof and on the circumferential outer wall of the protective plate (3), and the bolts (2) are connected to the threaded holes by threads.

3. The dust-proof fan according to claim 1, characterized in that: The interior of the protective plate (3) is provided with a plurality of through grooves evenly arranged in a circumference, and a dustproof net is installed inside each through groove.

4. The dust-proof fan according to claim 1, wherein: A plurality of driving teeth are evenly mounted on the circumferential surface of the driving wheel (403), and a plurality of transmission teeth are evenly mounted on the circumferential surface of the transmission wheel (404), and the driving teeth are meshed and connected with the transmission teeth.

5. The dust-proof fan according to claim 1, wherein: A bearing is sleeved on the circumferential surface of the intersection between the rear side of each positioning shaft (405) and the positioning plate (407).

6. The dust-proof fan according to claim 1, characterized in that: The inner ends of the three connecting plates (409) are connected with positioning tubes, and the positioning tubes are interference fit with the extension shaft (408).

7. The dust-proof fan according to claim 1, wherein: A positioning groove is provided inside the protective cover (1), the support seat (5) is interference fit with the positioning groove, and a plurality of through holes are evenly provided inside the support seat (5).

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