Dustproof axial flow fan

Abstract

The utility model provides a dustproof axial flow fan, and belongs to the field of fans. The axial flow fan solves the problem that an existing axial flow fan easily sucks particulate matter. The dustproof axial flow fan comprises a fan body and an axial flow cylinder, a dustproof mechanism is arranged in the axial flow cylinder, the dustproof mechanism is of a split type detachable structure and is installed in the axial flow cylinder, the dustproof mechanism comprises a dustproof filter element, a connecting piece, a connecting cylinder and a limiting assembly, and the connecting piece and the connecting cylinder are connected in a matched mode through internal and external threads. A plummer block allowing the dustproof filter element to be installed therein is axially arranged at the center of the connecting piece in an extending mode, a through hole allowing air to circulate is formed in the center of the plummer block, and a flow guide ring used for air flow guide is further arranged between the dustproof filter element and the plummer block. A plurality of air inlet holes for rapid air circulation are formed in the connecting piece, the dustproof filter element is located in the filter cavity, and a circulation gap is formed between the dustproof filter element and the side wall of the filter cavity. The dust-proof filter has the advantages of dust prevention and filtration.

Description

Technical Field

[0001] The utility model belongs to the field of fans and relates to an axial flow fan, in particular to a dustproof axial flow fan. Background Art

[0002] An axial flow fan typically consists of a motor and a base, with an air inlet and outlet connected to either side of the base. The motor drives the impeller to rotate on the base, conveying air parallel to the main axis. In industrial ventilation and environmental protection, axial flow fans, with their high air volume and low pressure head, are widely used for ventilation and forced convection heat transfer in production workshops, warehouses, office buildings, tunnels, and other places.

[0003] Axial flow fans are usually used in situations where the flow rate requirements are high and the pressure requirements are low. However, in some places with poor air quality and a large amount of dust particles, after long-term use, dust-containing gases are often sucked into the axial flow fan cover and accumulated inside, seriously affecting the service life of the axial flow fan. Summary of the Invention

[0004] The purpose of the present invention is to provide a dustproof axial flow fan to solve the above problems existing in the prior art.

[0005] The purpose of the utility model can be achieved through the following technical solutions: A dustproof axial flow fan, comprising a fan body and an axial flow cylinder, characterized in that a dustproof mechanism for dust filtration is provided inside the axial flow cylinder, and the dustproof mechanism is a split and detachable structure installed inside the axial flow cylinder;

[0006] The dustproof mechanism includes a dustproof filter element for dust filtration, a connector fixed to the end of the axial flow tube, a connecting tube connected to the connector, and a limit assembly for limiting the installation of the dustproof filter element;

[0007] The connecting piece and the connecting cylinder are connected by internal and external threads, and cooperate to form a filter cavity for installing the dustproof filter element;

[0008] A pillow block for limiting the installation of the dust filter element is axially extended from the center of the connector, and a through hole for air circulation is opened in the center of the pillow block;

[0009] A guide ring for air diversion is also provided between the dustproof filter core and the pillow block;

[0010] The connecting piece is provided with a plurality of air inlet holes for rapid air circulation;

[0011] The dustproof filter core is located in the filter cavity and has a flow gap with the side wall of the filter cavity.

[0012] In the above-mentioned dust-proof axial flow fan, the dust-proof filter element is composed of a filter cartridge for air filtration, a plurality of filter plates for dust filtration, and two end covers for axial limiting. The two end covers are located at the two ends of the filter cartridge and are integrally formed with the filter cartridge.

[0013] In the above-mentioned dust-proof axial flow fan, a plurality of filter plates are arranged in sequence and spaced apart in a circumferential direction along the outer peripheral wall of the filter cartridge, and are integrally formed with the filter cartridge.

[0014] In the above-mentioned dust-proof axial flow fan, the filter cartridge is provided with a plurality of ventilation holes for facilitating air circulation, and the plurality of ventilation holes are distributed in sequence along the inner wall of the filter cartridge in a circumferential direction, and there are a plurality of ventilation holes between two adjacent filter plates, which are arranged axially at intervals.

[0015] In the above-mentioned dustproof axial flow fan, the limiting assembly consists of a limiting piece that cooperates with the filter element barrel and an elastic piece for elastic limiting. The elastic piece is located on the limiting piece and is installed with its opposite end against the side wall of the connecting barrel end.

[0016] In the above-mentioned dust-proof axial flow fan, the cross section of the end portion of the guide ring is arranged in an arc structure, which facilitates air circulation and protection against larger dust.

[0017] Compared with the existing technology, this dust-proof axial flow fan has a simple structural design. It uses a detachable dust-proof mechanism structure to filter the air, prevent dust and impurities from entering the axial flow cylinder, reduce the probability of particulate dust entering the axial flow cylinder when the fan is working, and reduce the probability of affecting the operation of the fan. At the same time, it is easy to disassemble and maintain later. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the three-dimensional structure of this dust-proof axial flow fan.

[0019] Figure 2 It is a schematic diagram of the three-dimensional structure of this dust-proof axial flow fan.

[0020] Figure 3 This is a schematic diagram of the cross-sectional structure of the dust-proof axial flow fan.

[0021] Figure 4 This is a schematic diagram of the three-dimensional structure of the dust-proof filter element of this dust-proof axial flow fan.

[0022] In the figure, 1. Fan body; 2. Axial flow cylinder; 3. Dust filter element; 4. Connecting cylinder; 5. Connecting part; 6. Filter chamber; 7. Through hole; 8. Pillow block; 9. Guide ring; 10. Air inlet; 11. Flow gap; 12. Filter element cylinder; 13. Filter disc; 14. End cover; 15. Ventilation hole; 16. Limiting part; 17. Elastic part. DETAILED DESCRIPTION

[0023] The following are specific embodiments of the present invention and the accompanying drawings to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

[0024] like Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 As shown, the dust-proof axial flow fan comprises a fan body 1 and an axial flow cylinder 2, a dust-proof mechanism for dust filtering is arranged inside the axial flow cylinder 2, the dust-proof mechanism is a split detachable structure installed inside the axial flow cylinder 2, the dust-proof mechanism comprises a dust-proof filter element 3 for dust filtering, a connecting piece 5 fixed to the end of the axial flow cylinder 2, a connecting cylinder 4 connected with the connecting piece 5, and a limiting assembly for limiting the installation of the dust-proof filter element 3, the connecting piece 5 and the connecting cylinder 4 are connected by internal and external threads, and form a filter cavity 6 for installing the dust-proof filter element 3, an axially extending pillow block 8 for limiting the installation of the dust-proof filter element is located at the center of the connecting piece 5, a through hole 7 for air circulation is provided in the center of the pillow block 8, a guide ring 9 for air diversion is also provided between the dust-proof filter element and the pillow block 8, a plurality of air inlet holes 10 for rapid air circulation are provided on the connecting piece 5, the dust-proof filter element is located in the filter cavity 6, and has a flow gap 11 with the side wall of the filter cavity 6.

[0025] The above structure is simple in design and utilizes a detachable dustproof structure to filter the air, preventing dust and impurities from entering the interior of the axial flow cylinder 2, reducing the probability of particulate dust entering the interior of the axial flow cylinder 2 when the fan is working, and reducing the probability of affecting the operation of the fan. At the same time, it is easy to disassemble and maintain later.

[0026] To elaborate further, in order to facilitate the dust filtration protection of the air inhaled at the end when the axial flow fan is working, and at the same time, to facilitate cleaning and maintenance, the dust filter element is composed of a filter cartridge 12 for air filtration, a number of filter discs 13 for dust filtration, and two end covers 14 for axial limiting. The two end covers 14 are located at both ends of the filter cartridge 12 and are integrally formed with the filter cartridge. A number of filter discs 13 are arranged in sequence in a circumferential direction along the outer circumferential wall of the filter cartridge 12 and are integrally formed with the filter cartridge 12. A number of ventilation holes 15 are provided on the filter cartridge 12 to facilitate air circulation. A number of ventilation holes 15 are spaced in sequence in a circumferential direction along the inner wall of the filter cartridge, and there are a number of ventilation holes 15 between two adjacent filter discs 13, which are arranged axially at intervals.

[0027] To elaborate further, in order to facilitate the axial limiting installation of the dust filter element 3, the limiting assembly consists of a limiting part 16 that cooperates with the filter element tube 12 and an elastic part 17 for elastic limiting. The elastic part 17 is located on the limiting part 16 and is installed with the relative end against the side wall of the end of the connecting tube 4.

[0028] To elaborate further, in order to prevent larger particles from entering the interior of the axial flow cylinder 2, the cross-section of the end of the guide ring 9 is arranged in an arc structure, which is convenient for air circulation and larger dust protection.

[0029] The specific embodiments described herein are merely illustrative of the spirit of the present invention. Persons skilled in the art may make various modifications, additions, or substitutions to the described specific embodiments without departing from the spirit of the present invention or exceeding the scope defined by the appended claims.

[0030] Although this article uses more terms, it does not exclude the possibility of using other terms. These terms are used only to more conveniently describe and explain the essence of the utility model; interpreting them as any additional restrictions is contrary to the spirit of the utility model.

Claims

1. A dustproof axial flow fan, comprising a fan body (1) and an axial flow cylinder (2), characterized in that: A dustproof mechanism for dust filtration is provided inside the axial flow cylinder (2); the dustproof mechanism is a split, detachable structure installed inside the axial flow cylinder (2); The dustproof mechanism comprises a dustproof filter element (3) for dustproof filtering, a connecting piece (5) fixed to the end of the axial flow cylinder (2), a connecting cylinder (4) cooperatively connected to the connecting piece (5), and a limiting assembly for limiting the installation of the dustproof filter element (3); The connecting piece (5) and the connecting cylinder (4) are connected by means of internal and external threads, and cooperate to form a filter cavity (6) for the dustproof filter element (3) to be installed therein; A shaft platform (8) for positioning and mounting the dust filter element is axially extended from the center of the connecting member (5), and a through hole (7) for air circulation is provided at the center of the shaft platform (8); A guide ring (9) for guiding air is also provided between the dustproof filter core and the pillow block (8); The connecting member (5) is provided with a plurality of air inlet holes (10) for rapid air circulation; The dustproof filter core is located in the filter cavity (6) and has a flow gap (11) with the side wall of the filter cavity (6).

2. The dustproof axial flow fan according to claim 1, characterized in that: The dustproof filter element is composed of a filter cartridge (12) for air filtration, a plurality of filter sheets (13) for dust filtration, and two end caps (14) for axial limiting. The two end caps (14) are located at two ends of the filter cartridge (12) and are integrally formed with the filter cartridge.

3. The dustproof axial flow fan according to claim 2, characterized in that: The plurality of filter sheets (13) are sequentially spaced and distributed along the outer peripheral wall of the filter cartridge (12) in a circumferential direction, and are integrally formed with the filter cartridge (12).

4. The dustproof axial flow fan according to claim 3, characterized in that: The filter cartridge (12) is provided with a plurality of ventilation holes (15) for facilitating air circulation. The plurality of ventilation holes (15) are sequentially spaced along the inner wall of the filter cartridge in a circumferential direction. A plurality of ventilation holes (15) are provided between two adjacent filter sheets (13) and are spaced apart in an axial direction.

5. The dustproof axial flow fan according to claim 1, characterized in that: The limiting assembly comprises a limiting member (16) that cooperates with the filter cartridge (12) to limit the position and an elastic member (17) for elastic limiting. The elastic member (17) is located on the limiting member (16) and is mounted with its opposite end against the end side wall of the connecting cartridge (4).

6. The dustproof axial flow fan according to claim 1, characterized in that: The cross section of the end of the guide ring (9) is arranged in an arc structure, which facilitates air circulation and large dust protection.

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