Anti-falling fan mesh enclosure for exhaust fan

Abstract

The utility model discloses an anti-drop fan mesh enclosure for an exhaust fan, and relates to the technical field of fan parts, the anti-drop fan mesh enclosure comprises an exhaust fan and a cleaning assembly, the two sides of the interior of the exhaust fan are provided with plugging ports, the air outlet of the exhaust fan is provided with a support frame body, the middle part of the support frame body is provided with a filter screen, and the filter screen is provided with an air inlet. And the cleaning assembly is arranged above the rear end of the supporting frame and comprises a motor base, a driving motor, a driving rod, a fourth bevel gear, a fifth bevel gear, a transmission rod and a cleaning brush, the driving motor is arranged at the top of the motor base, and the output end of the driving motor penetrates through the motor base and is connected with the driving rod. According to the anti-falling fan mesh enclosure for the exhaust fan, a driving motor drives a driving rod and a fourth bevel gear to rotate, the fourth bevel gear drives a fifth bevel gear to conduct transmission so that a transmission rod can rotate, the surface of a filter screen is cleaned through a rotating cleaning brush, and due to the fact that the filter screen is arranged at an air outlet of the exhaust fan, when the exhaust fan operates, the filter screen is not prone to falling off. And dust can be easily taken away from the filter screen.

Description

Technical Field

[0001] The utility model relates to the technical field of fan components, in particular to an anti-falling fan mesh cover for an exhaust fan. Background Art

[0002] Exhaust fans, also known as negative pressure fans, utilize air convection to maintain a negative pressure in the room. This creates a suction force that continuously draws in outdoor air and expels the hot, stuffy air, thereby achieving ventilation and cooling. The fan guard, a crucial component of an exhaust fan, is typically installed at the fan's inlet or outlet to protect the fan from heat dissipation, exhaust, and ventilation.

[0003] For example, the utility model with application number CN202022076301.6 discloses a fan mesh cover. The filter assembly of the utility model can effectively prevent large garbage such as leaves and smaller substances from entering the fan blade working space, improve efficiency, and improve cleanliness, ensure the normal operation of the fan, and achieve better protection effect. The limit buckle assembly can quickly disassemble the fan mesh cover, which is convenient for cleaning and replacing the internal fan to increase the service life of the fan. The device is simple to operate and highly practical, and is suitable for most fans. However, after long-term use, a large amount of dust will adhere to the surface of the filter screen, and it can only be cleaned by manually removing the filter screen, which is time-consuming and labor-intensive.

[0004] Therefore, in view of this, the existing structure and defects are studied and improved, and an anti-falling fan mesh cover for an exhaust fan is proposed. Utility Model Content

[0005] The purpose of the present utility model is to provide an anti-falling fan mesh cover for an exhaust fan, so as to solve the problems raised in the above-mentioned background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an anti-falling fan mesh cover for an exhaust fan, comprising an exhaust fan and a cleaning assembly, plug interfaces are provided on both sides of the interior of the exhaust fan, and a support frame is installed at the air outlet of the exhaust fan, a filter is provided in the middle of the support frame, and the cleaning assembly is arranged above the rear end of the support frame, and the cleaning assembly comprises a motor seat, a drive motor, a drive rod, bevel gear four, bevel gear five, a transmission rod and a cleaning brush, a drive motor is provided on the top of the motor seat, and the output end of the drive motor passes through the motor seat and is connected to the drive rod, a bevel gear four is provided at the bottom of the drive rod, and the outside of the bevel gear four is connected to the bevel gear five, a transmission rod is passed through the middle of the bevel gear five, and a cleaning brush is provided on the right side of the outside of the transmission rod.

[0007] Furthermore, servo motors are installed at the openings on both sides of the support frame, and the output ends of the servo motors are connected to drive shafts.

[0008] Furthermore, the end of the driving shaft is connected to a bevel gear 1, and a bevel gear 2 is provided outside the bevel gear 1.

[0009] Furthermore, a bevel gear three is provided on the outside of the bevel gear one, and screw rods are passed through the middle of the bevel gear one and the bevel gear three.

[0010] Furthermore, the outside of the screw rod is connected to a screw rod nut, and the outside of the screw rod nut is provided with a plug-in component.

[0011] Furthermore, the plug interfaces are symmetrically distributed about the internal transverse central axis of the exhaust fan, and four plug interfaces and four connectors are provided.

[0012] Furthermore, the screw rod is rotatably connected to the support frame, and four screw rods are provided.

[0013] The utility model provides an anti-falling fan mesh cover for an exhaust fan, which has the following beneficial effects:

[0014] 1. The driving motor of the utility model drives the driving rod and bevel gear four to rotate, and the bevel gear four drives the bevel gear five to rotate the driving rod, and the rotating cleaning brush is used to clean the surface of the filter. Since the filter is arranged at the air outlet of the exhaust fan, the dust can be easily taken away from the filter when the exhaust fan is running.

[0015] 2. The utility model places the support frame at the air outlet of the exhaust fan, drives the drive shaft and bevel gear 1 to rotate through the servo motor, and utilizes the engagement of bevel gear 1 with bevel gear 2 and bevel gear 3 to transmit power to rotate the screw rod, so that the connector follows the screw nut to perform longitudinal displacement along the outside of the screw rod until the connector is inserted into the corresponding plug interface, so that the exhaust fan and support frame have good stability after assembly and avoid falling off. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic side view of the overall structure of the anti-falling fan mesh cover for the exhaust fan of the utility model;

[0017] Figure 2 This is a schematic diagram of the overall front view structure of the anti-falling fan mesh cover for the exhaust fan of the utility model;

[0018] Figure 3 The utility model is a schematic diagram of the three-dimensional structure of the support frame of the anti-falling fan mesh cover of the exhaust fan.

[0019] In the figure: 1. Exhaust fan; 2. Plug interface; 3. Support frame; 4. Filter; 5. Servo motor; 6. Drive shaft; 7. Bevel gear one; 8. Bevel gear two; 9. Bevel gear three; 10. Screw; 11. Screw nut; 12. Connector; 13. Cleaning assembly; 1301. Motor base; 1302. Drive motor; 1303. Drive rod; 1304. Bevel gear four; 1305. Bevel gear five; 1306. Transmission rod; 1307. Cleaning brush. DETAILED DESCRIPTION

[0020] The following embodiments of the present invention are described in further detail with reference to the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0021] like Figure 1 As shown, an anti-falling fan mesh cover for an exhaust fan includes an exhaust fan 1 and a cleaning assembly 13. The cleaning assembly 13 is arranged above the rear end of the support frame 3, and the cleaning assembly 13 includes a motor base 1301, a drive motor 1302, a drive rod 1303, a bevel gear four 1304, a bevel gear five 1305, a transmission rod 1306 and a cleaning brush 1307. The drive motor 1302 is arranged on the top of the motor base 1301, and the output end of the drive motor 1302 passes through the motor base 1301 and is connected to the drive rod 1303. The bottom of the drive rod 1303 is provided with a bevel gear four 1304, and the outside of the bevel gear four 1304 is connected to the bevel gear five 1305. The middle of the bevel gear five 1305 is penetrated by a transmission rod 1306, and the right side of the outside of the transmission rod 1306 is sleeved with a cleaning brush 1307.

[0022] The specific operation is as follows: the driving motor 1302 drives the driving rod 1303 and the bevel gear four 1304 to rotate, and the bevel gear four 1304 drives the bevel gear five 1305 to rotate the driving rod 1306, and the rotating cleaning brush 1307 is used to clean the surface of the filter 4. Since the filter 4 is set at the exhaust fan 1, when the exhaust fan 1 is running, the dust can be easily taken away from the filter 4.

[0023] like Figures 1 to 3As shown, plug interfaces 2 are provided on both sides of the interior of the exhaust fan 1, and a support frame 3 is installed at the air outlet of the exhaust fan 1, a filter screen 4 is provided in the middle of the support frame 3, and a servo motor 5 is installed at the openings on both sides of the support frame 3, and the output end of the servo motor 5 is connected to a drive shaft 6, the end of the drive shaft 6 is connected to a bevel gear 1 7, and a bevel gear 2 8 is provided on the outside of the bevel gear 1 7, and a bevel gear 3 9 is also provided on the outside of the bevel gear 1 7, and a screw rod 10 is passed through the middle of the bevel gear 1 7 and the bevel gear 3 9, the outside of the screw rod 10 is connected to a screw nut 11, and a connector 12 is provided on the outside of the screw nut 11, the plug interfaces 2 are symmetrically distributed about the internal transverse central axis of the exhaust fan 1, and four plug interfaces 2 and connectors 12 are provided each, the screw rod 10 and the support frame 3 are rotatably connected, and four screw rods 10 are provided.

[0024] The specific operation is as follows: place the support frame 3 at the air outlet of the exhaust fan 1, drive the drive shaft 6 and bevel gear 1 7 to rotate through the servo motor 5, and use the engagement of bevel gear 1 7 with bevel gear 2 8 and bevel gear 3 9 to transmit power to rotate the screw rod 10, so that the connector 12 follows the screw nut 11 to perform longitudinal displacement along the outside of the screw rod 10 until the connector 12 is inserted into the corresponding plug interface 2, so that the exhaust fan 1 and the support frame 3 have good stability after assembly to avoid falling off.

[0025] In summary, when the anti-falling fan mesh cover for the exhaust fan is used, first, the servo motor 5 drives the drive shaft 6 and the bevel gear 1 7 to rotate, and the bevel gear 1 7 drives the bevel gear 2 8 and the bevel gear 3 9 to rotate, so that the screw rod 10 is rotated, and the screw nut 11 is displaced along the outside of the screw rod 10. When the plug-in component 12 is withdrawn from the plug-in interface 2, the support frame 3 and the filter 4 can be removed from the air outlet of the exhaust fan 1, so that the interior of the exhaust fan 1 can be easily inspected and maintained.

[0026] Then, the support frame 3 is placed at the air outlet of the exhaust fan 1, so that the four openings on both sides of the support frame 3 are aligned with the four plug interfaces 2. Then, the servo motor 5 drives the drive shaft 6 and the bevel gear 1 7 to rotate, and the meshing of the bevel gear 1 7 with the bevel gear 2 8 and the bevel gear 3 9 transmits power to rotate the screw rod 10, so that the connector 12 follows the screw nut 11 and moves longitudinally along the outside of the screw rod 10 until the connector 12 is inserted into the plug interface 2, so that the exhaust fan 1 and the support frame 3 form a detachable fixed connection by relying on the connector 12 and the plug interface 2, so as to prevent the support frame 3 and the filter screen 4 from falling off during use;

[0027] When a large amount of dust adheres to the surface of the filter 4, the drive motor 1302 on the motor base 1301 is operated, and the drive motor 1302 provides a rotational force for the drive rod 1303 and the bevel gear four 1304. The bevel gear four 1304 and the bevel gear five 1305 are engaged with each other to transmit power to rotate the transmission rod 1306, so that the dust on the filter 4 is automatically cleaned by the cleaning brush 1307, and the exhaust fan 1 is operated to exhaust air, so that the dust is easily taken away from the filter 4, thereby ensuring the smoothness of the filter 4.

[0028] The embodiments of the present invention are provided for purposes of illustration and description and are not intended to be exhaustive or to limit the present invention to the disclosed forms. Many modifications and variations will be apparent to those skilled in the art. The embodiments are selected and described to better illustrate the principles and practical applications of the present invention and to enable those skilled in the art to understand the present invention and design various embodiments with various modifications suitable for specific applications.

Claims

1. An anti-drop fan screen for an exhaust fan, comprising an exhaust fan (1) and a cleaning assembly (13), characterized in that: The exhaust fan (1) is provided with plug interfaces (2) on both sides thereof, and a support frame (3) is installed at the air outlet of the exhaust fan (1), a filter screen (4) is provided in the middle of the support frame (3), and the cleaning assembly (13) is provided above the rear end of the support frame (3), and the cleaning assembly (13) comprises a motor seat (1301), a drive motor (1302), a drive rod (1303), a bevel gear four (1304), a bevel gear five (1305), a transmission rod (1306) and a cleaning brush (1307). A driving motor (1302) is provided on the top of the motor base (1301), and the output end of the driving motor (1302) passes through the motor base (1301) and is connected to a driving rod (1303), a bevel gear four (1304) is provided at the bottom of the driving rod (1303), and the outside of the bevel gear four (1304) is connected to a bevel gear five (1305), a transmission rod (1306) is passed through the middle of the bevel gear five (1305), and a cleaning brush (1307) is sleeved on the right side of the outside of the transmission rod (1306).

2. The anti-falling fan guard for exhaust fans according to claim 1, characterized in that: A servo motor (5) is installed at the openings on both sides of the support frame (3), and the output end of the servo motor (5) is connected to a drive shaft (6).

3. The anti-falling fan guard for exhaust fans according to claim 2, characterized in that: The end of the driving shaft (6) is connected to a bevel gear 1 (7), and a bevel gear 2 (8) is arranged outside the bevel gear 1 (7).

4. The anti-falling fan mesh cover for an exhaust fan according to claim 3, characterized in that: A bevel gear three (9) is also provided on the outside of the bevel gear one (7), and screw rods (10) are passed through the middle of the bevel gear one (7) and the bevel gear three (9).

5. The anti-falling fan mesh cover for an exhaust fan according to claim 4, characterized in that: The outside of the screw rod (10) is connected to a screw rod nut (11), and the outside of the screw rod nut (11) is provided with a plug-in connector (12).

6. The anti-falling fan mesh cover for an exhaust fan according to claim 5, characterized in that: The plug ports (2) are symmetrically distributed about the internal transverse central axis of the exhaust fan (1), and four of each of the plug ports (2) and the connectors (12) are provided.

7. The anti-falling fan mesh cover for an exhaust fan according to claim 4, characterized in that: The screw rod (10) is rotatably connected to the support frame (3), and four screw rods (10) are provided.

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