Dustproof structure of fan

Abstract

The utility model relates to the technical field of draught fans, and discloses a draught fan dustproof structure which comprises a draught fan shell, a machine cover, a draught fan body and an air suction opening, a dustproof mechanism is arranged on the machine cover, an auxiliary mechanism is arranged on the dustproof mechanism, the dustproof mechanism comprises a groove, the groove is formed in the outer wall of the top of the machine cover, and the auxiliary mechanism is arranged in the groove. A sealing cover is fixedly connected to the outer wall of the top of the machine cover, a flow guide groove is formed in the inner wall of the bottom of the sealing cover, filtering holes are formed in the inner wall of an inner ring of the sealing cover, a bottom frame is clamped to the inner wall of the bottom of the sealing cover, and a compression spring is fixedly connected to the outer wall of the top of the bottom frame. A top plate is slidably connected to the inner wall of the top of the sealing cover. According to the utility model, the filter holes, the top plate and other structures are arranged, so that the problem that when the fan is used for a long time or is not used, the exhaust inlet and the filter screen are exposed outside, a large amount of dust is easy to attach, and the fan is easy to block and influence the performance of the fan when being used subsequently is solved.

Description

Technical Field

[0001] This utility model relates to the field of fan technology, and in particular to a dustproof structure for fans. Background Technology

[0002] Fans are machines used to compress and transport gases. They are widely used in factories, mines, tunnels, cooling towers, vehicles, ships and buildings for ventilation, dust removal and cooling; boilers and industrial furnaces for ventilation and induced draft; air conditioning equipment and household appliances for cooling and ventilation; grain drying and conveying; wind tunnel air source and hovercraft inflation and propulsion, etc.

[0003] A fan is a machine that uses input mechanical energy to increase gas pressure and discharge gas. It is a type of driven fluid machinery. Fans are widely used in factories, mines, tunnels, cooling towers, vehicles, ships and buildings for ventilation, dust removal and cooling; ventilation and induced draft in boilers and industrial furnaces; cooling and ventilation in air conditioning equipment and household appliances; grain drying and conveying; wind tunnel air source and air filling and propulsion of hovercraft, etc.

[0004] The above-mentioned problems have the following drawbacks: Fans generally filter the air drawn in from the outside through a filter screen or filter hole. However, when used for a long time or not used, the air intake and filter screen will be exposed to the outside, which will cause a lot of dust to accumulate. This will easily lead to blockage and affect the performance of the fan in subsequent use. Therefore, a dustproof structure for fans is proposed to solve the above problems. Utility Model Content

[0005] To overcome the above deficiencies, this utility model provides a dustproof structure for a fan, which aims to improve the problem in the prior art where the air intake and filter are exposed to the outside and accumulate a large amount of dust when used for a long time or not used.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a dustproof structure for a fan, comprising a fan casing, a cover, a fan body, and an air intake. The cover is provided with a dustproof mechanism, which includes an annular groove on the top of the cover. A sealing cover with open ends and a hollow interior is fixedly connected to the outer wall of the top of the cover. The top of the sealing cover is sealed, and the interior of the sealing cover is arranged in a double layer with an annular guide groove with an open bottom between the two layers. The bottom of the outer layer is fixed to the outer edge of the groove, and the guide groove communicates with the air intake through the groove. The lower inner side wall of the sealing cover has multiple filter holes communicating with the guide groove. The bottom of the inner layer of the sealing cover is threadedly connected to an annular bottom frame. A top plate is provided inside the sealing cover and slides with it. The two ends of a vertically arranged compression spring are fixedly connected to the top plate and the bottom frame, respectively.

[0007] As a further description of the above technical solution: a piston cleaning cotton is fixed to the bottom outer wall of the top plate.

[0008] As a further description of the above technical solution: the dustproof mechanism is provided with an auxiliary mechanism, the auxiliary mechanism including a hand support groove, the hand support groove being opened at the top of the top plate, the bottom of the top plate being fixedly connected to a vertically arranged hexagonal plate, the bottom frame being provided with a hexagonal groove that mates with the hexagonal plate at the location opposite the hexagonal plate, and the outer side wall of the bottom frame being provided with a threaded groove.

[0009] As a further description of the above technical solution: a frosted pad is fixedly connected to the inner side wall of the hand support groove.

[0010] As a further description of the above technical solution: a wear-resistant pad is fixedly connected to the bottom outer wall of the hexagonal plate, and the outer wall of the hexagonal plate and the inner wall of the hexagonal groove slide in the vertical direction.

[0011] As a further description of the above technical solution: the top outer wall of the top plate is provided with a directional mark.

[0012] As a further description of the above technical solution: the air outlet of the fan casing is located on its front side wall, the fan body is fixedly connected to the top outer wall of the cover, and the air intake is opened on the side outer wall of the fan body.

[0013] This utility model has the following beneficial effects:

[0014] 1. In this utility model, by setting up structures such as filter holes, top plate, and sealing cover, the air outlet is automatically opened when the fan is turned on, and the air entering from the outside is filtered. At the same time, the outlet is automatically closed when the fan is turned off, preventing the air outlet and filter holes from being exposed to the outside. This improves the problem that when the fan is used for a long time or not, the air inlet and filter screen are exposed to the outside and easily accumulate a lot of dust, which can easily cause blockage and affect the performance of the fan when it is used later.

[0015] 2. In this utility model, by setting up structures such as hexagonal plates, hexagonal grooves, and threaded grooves, the dustproof mechanism components can be easily separated, which improves the problem that the piston cleaning cotton will accumulate a lot of dirt after long-term use, resulting in a decrease or failure of cleaning effect when wiping the filter holes and the inner wall of the sealing cover. Attached Figure Description

[0016] Figure 1 This is a split-view schematic diagram of the overall main view of a dustproof structure for a fan proposed in this utility model;

[0017] Figure 2 This is a schematic cross-sectional view of the overall dustproof structure for a fan proposed in this utility model;

[0018] Figure 3 This is a schematic diagram of the dustproof mechanism of a fan dustproof structure proposed in this utility model;

[0019] Figure 4 This is a schematic diagram of the auxiliary mechanism of a dustproof structure for a fan proposed in this utility model.

[0020] Legend:

[0021] 1. Fan casing; 2. Air outlet; 3. Cover; 4. Fan body; 42. Air inlet; 5. Dustproof mechanism; 51. Groove; 52. Sealing cover; 53. Guide channel; 54. Filter hole; 55. Base frame; 56. Top plate; 57. Compression spring; 58. Piston cleaning cotton; 6. Auxiliary mechanism; 61. Hand support groove; 62. Hexagonal plate; 63. Hexagonal groove; 64. Threaded groove; 65. Directional indicator. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] Reference Figure 1 - Figure 3 This utility model provides an embodiment of a dustproof structure for a fan, comprising a fan housing 1, a cover 3, a fan body 4, and an air intake 42. The cover 3 is provided with a dustproof mechanism 5, which includes an annular groove 51 located at the top of the cover 3. A sealing cover 52, which is open at both ends and hollow, is fixedly connected to the top outer wall of the cover 3. The top of the sealing cover 52 is sealed, and the interior of the side wall is arranged in a double-layer configuration, with an annular guide groove 53 formed between the two layers. The bottom of the outer layer is fixed to the outer edge of the groove 51, and the guide groove 53 communicates with the air intake 42 through the groove 51. The lower inner side wall of the sealing cover 52 is provided with multiple filter holes 54 that communicate with the guide groove 53. The bottom of the inner layer of the sealing cover 52 is threadedly connected to a ring-shaped bottom frame 55. A top plate 56 is provided inside the sealing cover 52 and slides with it. The two ends of the vertically arranged compression spring 57 are fixedly connected to the top plate 56 and the bottom frame 55 respectively. When the fan is drawing air in, the top plate 56 drops by setting the guide groove 53, so that the outside air enters the guide groove 53 through the filter holes 54. The outside air is filtered by setting the filter holes 54, and the compression spring 57 generates a slight thrust on the bottom frame 55.

[0024] Reference Figure 2 - Figure 4The bottom outer wall of the top plate 56 is fixed with a piston cleaning cotton 58. The top outer wall of the top plate 56 is provided with a directional mark 65. The air outlet 2 of the fan housing 1 is located on its front side wall. The fan body 4 is fixedly connected to the top outer wall of the cover 3. The air inlet 42 is opened on the side outer wall of the fan body 4. By setting the piston cleaning cotton 58, when the top plate 56 moves upward, it wipes the filter hole 54 and the inner wall surface of the sealing cover 52 and pushes them to the outside.

[0025] Reference Figure 3 - Figure 4 The dustproof mechanism 5 is equipped with an auxiliary mechanism 6, which includes a hand support groove 61. The hand support groove 61 is located on the top of the top plate 56. A vertically arranged hexagonal plate 62 is fixedly connected to the bottom of the top plate 56. A hexagonal groove 63 is provided on the bottom frame 55 opposite to the hexagonal plate 62 to mate with the hexagonal plate 62. A threaded groove 64 is provided on the outer side wall of the bottom frame 55. A frosted pad is fixedly connected to the inner side wall of the hand support groove 61. A wear-resistant pad is fixedly connected to the outer bottom wall of the hexagonal plate 62. The outer wall of the hexagonal plate 62 and the inner wall of the hexagonal groove 63 slide in the vertical direction. By setting the hexagonal plate 62 and the hexagonal groove 63 to mate with each other, the top plate 56 and the bottom frame 55 can be locked and adjusted. The threaded groove 64 allows the bottom frame 55 to be threadedly fixed or separated from the sealing cover 52. A directional indicator 65 indicates the operating direction.

[0026] Working Principle: By turning on the main body 4 of the fan, air is drawn in through the air inlet 42. During this process, the sealed cover 52 creates a suction force on the top plate 56, causing it to descend and compress the compression spring 57. Simultaneously, as the top plate 56 descends to a certain position, the filter holes 54 are exposed to the outside air, absorbing it. The filtered air enters the air inlet 42 through the guide groove 53, initiating the fan's suction operation. When not in use, the air inlet 42 stops suction, and the top plate 56, under the thrust of the compression spring 57, seals the bottom of the sealed cover 52, preventing the filter holes 54 from being exposed to outside air. Simultaneously, as the top plate 56 rises, it drives the piston cleaning cotton 58 upwards, allowing the piston to clean the filter cotton 58. The cleaning cotton 58 is used to wipe the filter holes 54 and the inner wall of the sealing cover 52, so that impurities are wiped to the outside of the sealing cover 52. At the same time, when the piston cleaning cotton 58 needs to be replaced and cleaned, the top plate 56 is pressed by hand holding the hand support groove 61, so that the hexagonal plate 62 on the top plate 56 moves down and is inserted into the hexagonal groove 63. Then, the hand support groove 61 is rotated to make the top plate 56 rotate. The rotation of the top plate 56 drives the hexagonal plate 62 to rotate. The rotation of the hexagonal plate 62 drives the hexagonal groove 63 to rotate. The rotation of the hexagonal groove 63 drives the bottom frame 55 to rotate. The rotation of the bottom frame 55 causes the threaded groove 64 to rotate. The rotation of the threaded groove 64 separates from the bottom of the sealing cover 52, making it easy to separate and install the bottom frame 55 and the sealing cover 52.

[0027] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A dustproof structure of a fan, comprising a fan casing (1), a cover (3), a fan body (4), and an air inlet (42), characterized in that: The dustproof mechanism (5) is arranged on the machine cover (3), the dustproof mechanism (5) includes a ring-shaped groove (51), the groove (51) is opened in the top of the machine cover (3), the outer wall of the top of the machine cover (3) is fixedly connected with a hollow sealing cover (52) without cover at both ends, the top of the side wall of the sealing cover (52) is sealed, and the inside of the side wall is arranged in double layers, the bottom opening ring-shaped flow guide groove (53) is formed in the middle of the two layers, the bottom of the outer layer is fixed with the outer edge of the groove (51), and the flow guide groove (53) is communicated with the air suction port (42) through the groove (51); a plurality of filter holes (54) are arranged in the lower part of the inner layer of the sealing cover (52) and communicated with the flow guide groove (53), and the bottom of the inner layer of the sealing cover (52) is threadedly connected with a ring-shaped bottom frame (55), the sealing cover (52) is provided with a top plate (56) in sliding fit therewith, and the vertical compression spring (57) is fixedly connected at both ends with the top plate (56) and the bottom frame (55).

2. The dustproof structure of a fan according to claim 1, characterized in that: The bottom outer wall of the top plate (56) is fixed with a piston cleaning cotton (58).

3. The dustproof structure of a fan according to claim 1, characterized in that: The auxiliary mechanism (6) is arranged on the dustproof mechanism (5), the auxiliary mechanism (6) includes a hand holding groove (61), the hand holding groove (61) is opened in the top of the top plate (56), the bottom of the top plate (56) is fixedly connected with a vertically arranged hexagonal plate (62), the bottom frame (55) is provided with a hexagonal groove (63) matched with the hexagonal plate (62) at the position opposite to the hexagonal plate (62), and the side outer wall of the bottom frame (55) is provided with a threaded groove (64).

4. The dust prevention structure of a fan according to claim 3, characterized in that: The side inner wall of the hand holding groove (61) is fixedly connected with a frosted pad.

5. The dust prevention structure of a fan according to claim 3, characterized in that: The bottom outer wall of the hexagonal plate (62) is fixedly connected with a wear-resistant pad, and the outer wall of the hexagonal plate (62) and the inner wall of the hexagonal groove (63) are in sliding fit in the vertical direction.

6. The dust prevention structure of a fan according to claim 3, characterized in that: The top outer wall of the top plate (56) is provided with a pointing mark (65).

7. The dust prevention structure of a fan according to claim 1, characterized in that: The air outlet (2) of the fan shell (1) is located on the front side wall thereof, the fan body (4) is fixedly connected to the top outer wall of the machine cover (3), and the air suction port (42) is arranged on the side outer wall of the fan body (4).

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