Axial flow fan

Abstract

The utility model discloses an axial flow fan, which relates to the technical field of fans, and adopts the technical scheme that the axial flow fan comprises a shell, a protective net cover is arranged on the shell, the protective net cover comprises a net body, a plurality of connecting pieces used for being attached to the inner wall of the shell are arranged at the edge of the net body, and insertion holes are formed in the connecting pieces; the side wall of the machine shell is provided with a plurality of through holes used for being communicated with the locking holes, the machine shell is provided with a plurality of locking assemblies, each locking assembly comprises a locking pin, the locking pins can move up and down, and the locking pins are used for penetrating through the through holes and being inserted into the inserting holes. According to the axial flow fan, the connecting pieces are locked through the locking pins, the protective net cover can be fixed in the machine shell, when the protective net cover needs to be disassembled, locking of the connecting pieces can be relieved only by pushing the locking pins to move and enabling the locking pins to sequentially retreat from the inserting holes and the through holes, and therefore the protective net cover can be disassembled from the interior of the machine shell, and the protective net cover can be conveniently disassembled. Tools are not needed, the operation is convenient, and the dismounting operation is more time-saving and labor-saving.

Description

Technical Field

[0001] This utility model relates to the field of fan technology, specifically to an axial flow fan. Background Technology

[0002] 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.

[0003] Existing fans are mainly composed of impellers, casings, motors and other components. When the motor starts, it drives the impeller to rotate, so that the gas enters the impeller axially from the air inlet. The gas energy is increased by the pushing of the blades on the impeller, and then flows into the guide vanes. The guide vanes deflect the airflow into axial flow and guide the gas into the diffuser, further converting the gas kinetic energy into pressure energy, and finally introducing it into the working pipeline.

[0004] To protect personnel safety and prevent foreign objects from entering, protective mesh covers are typically installed on the casing of wind turbines. These covers are usually made of robust materials with excellent impact resistance and corrosion resistance, ensuring safe operation of the wind turbine. After a period of use, dust accumulates on the impeller surface of existing wind turbines. To ensure the impeller's performance, it needs to be wiped clean, requiring the removal of the protective mesh cover from the casing. However, existing protective mesh covers are usually fixed to the casing with multiple bolts and nuts, requiring tools for disassembly and making the process cumbersome and time-consuming. Utility Model Content

[0005] The purpose of this invention is to provide an axial flow fan to solve the above-mentioned problems.

[0006] This utility model achieves the above-mentioned objective through the following technical solution: an axial flow fan includes a housing, a protective mesh cover is provided on the housing, the protective mesh cover includes a mesh body, a plurality of connecting pieces for fitting against the inner wall of the housing are provided at the edge of the mesh body, the connecting pieces are provided with insertion holes, a plurality of through holes for communicating with locking holes are provided on the side wall of the housing, a plurality of locking components are provided on the housing, the locking components include locking pins, the locking pins can move up and down, and the locking pins are used to pass through the through holes and insert into the insertion holes.

[0007] As a further feature of this invention, the locking assembly also includes a connecting seat fixedly connected to the housing, a slider slidably connected inside the connecting seat, and the locking pin fixedly connected to the slider.

[0008] As a further feature of this invention, a spring is connected to the slider, and the end of the spring away from the slider is fixedly connected to the inner wall of the connecting seat.

[0009] As a further feature of this invention, a groove is provided on the connecting seat along the length direction, and a paddle is provided on the slider that passes through the groove.

[0010] As a further feature of this invention, the paddle is provided with a first magnetic block, and the connecting seat is provided with a second magnetic block that matches the first magnetic block.

[0011] As a further feature of this invention, an elastic sleeve is provided on the outside of the locking pin, and the elastic sleeve is made of rubber material.

[0012] As a further feature of this invention, a plurality of stop plates are provided on the inner wall of the housing. When the connecting plate abuts against the stop plate, the locking hole and the through hole are connected.

[0013] As a further feature of this invention, the mesh body is made of stainless steel.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] When installing the protective mesh cover, this utility model allows it to be placed inside the machine housing, with the connecting piece fitting against the inner wall of the housing. Then, the locking pin is pushed to move, allowing it to pass through the through hole and insert into the socket, thereby locking the connecting piece. Through the combined action of multiple locking pins, the protective mesh cover can be fixed inside the machine housing. When it is necessary to remove the protective mesh cover, simply push the locking pin to move it out of the socket and through hole in sequence, thus releasing the locking of the connecting piece and allowing the protective mesh cover to be removed from inside the machine housing without the need for tools. This convenient operation makes the disassembly process more time-saving and labor-saving. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of the present invention. Figure 1 ;

[0017] Figure 2 for Figure 1 Enlarged structural diagram at point A;

[0018] Figure 3 This is a schematic diagram of the structure of the present invention. Figure 2 ;

[0019] Figure 4 for Figure 3 Enlarged structural diagram at point B;

[0020] Figure 5 This is a schematic diagram of the structure of the protective mesh cover in this utility model;

[0021] Figure 6 for Figure 5 A magnified structural diagram at point C.

[0022] Reference numerals in the attached drawings: 1. Housing; 2. Mesh; 3. Connecting piece; 4. Insertion hole; 5. Locking pin; 6. Connecting seat; 7. Slider; 8. Spring; 9. Slide groove; 10. Paddle; 11. First magnet; 12. Second magnet; 13. Elastic sleeve; 14. Stop plate. Detailed Implementation

[0023] 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.

[0024] Please see Figure 1-6 As shown, an axial flow fan includes a housing 1, on which a protective mesh cover is provided. The protective mesh cover includes a mesh body 2, which is made of stainless steel, possessing high strength and hardness, and corrosion resistance, thus ensuring the durability of the protective mesh cover. Several connecting pieces 3 are provided at the edges of the mesh body 2 for fitting against the inner wall of the housing 1. Insertion holes 4 are provided on the connecting pieces 3. Several through holes communicating with locking holes are provided on the side wall of the housing 1. Several locking components are provided on the housing 1. The locking assembly includes a locking pin 5, which can move up and down. The locking pin 5 is used to pass through the through hole and insert into the insertion hole 4. When the protective mesh cover needs to be installed, it can be placed inside the housing 1 so that the connecting piece 3 is in contact with the inner wall of the housing 1. Then, the locking pin 5 is pushed to move, so that it passes through the through hole and inserts into the insertion hole 4, thereby locking the connecting piece 3. Through the combined action of multiple locking pins 5, the protective mesh cover can be fixed inside the housing 1. When the protective mesh cover needs to be removed, simply push the locking pin. 5. Move the pin 5 so that it exits sequentially from the insertion hole 4 and the through hole, thereby releasing the locking of the connecting piece 3. This allows the protective mesh cover to be removed from the inside of the housing 1 without the need for tools, making the disassembly operation more time-saving and labor-saving. An elastic sleeve 13 made of rubber is fitted outside the locking pin 5. After the locking pin 5 is inserted into the insertion hole 4, the elastic sleeve 13 will deform under the pressure of the inner wall of the insertion hole 4, thereby reducing the gap between the locking pin 5 and the insertion hole 4. The sealing makes the connection between the locking pin 5 and the insertion hole 4 more secure, thereby improving the installation firmness of the protective net cover inside the housing 1. Several stop plates 14 are provided on the inner wall of the housing 1. When the connecting plate 3 abuts against the stop plate 14, the locking hole and the through hole are connected. Therefore, when installing the protective net cover, by abutting the connecting plate 3 against the stop plate 14, the locking hole and the through hole can be aligned, so that the locking pin 5 can pass through the through hole and be inserted into the insertion hole 4 more easily, thus making the installation of the protective net cover more convenient.

[0025] Please see Figure 3 , Figure 4 As shown, the locking assembly also includes a connecting seat 6 fixedly connected to the housing 1. A slider 7 is slidably connected inside the connecting seat 6, and the locking pin 5 is fixedly connected to the slider 7. By pushing the slider 7 to slide inside the connecting seat 6, the locking pin 5 can be moved accordingly, making operation convenient. A spring 8 is connected to the slider 7, and the end of the spring 8 away from the slider 7 is fixedly connected to the inner wall of the connecting seat 6. When the slider 7 is pushed to slide and retract into the connecting seat 6, the locking pin 5 will sequentially exit from the insertion hole 4 and the through hole, thus unlocking. This will compress the spring 8, causing it to deform. When the slider 7 is released, the spring 8 will be freed from the pressure and extend and return to its original shape, thereby pushing the slider 7 out and causing the locking pin 5 to pass through the through hole and insert into the insertion hole 4. The spring 8 will then apply a pushing force to the locking pin 5, making the locking pin 5 more securely locked to the connecting piece 3, thus ensuring that the protective mesh cover is properly secured to the housing. The internal installation is more secure. A groove 9 is provided along the length of the connecting seat 6, and a lever 10 is provided on the slider 7 that passes through the groove 9. By pushing the lever 10 to slide in the groove 9, the slider 7 can be driven to slide inside the connecting seat 6, thereby pushing the locking pin 5. The lever 10 provides a force point for pushing the locking pin 5, making the operation easier and less strenuous. A first magnet 11 is provided on the lever 10, and a second magnet 12 matching the first magnet 11 is provided on the connecting seat 6. When the lever 10 is moved, the slider 7 is pushed into the connecting seat 6, and the locking pin 5 is withdrawn from the insertion hole 4 and the through hole in sequence. The first magnet 11 and the second magnet 12 will attract each other, thereby limiting the lever 10 and limiting the locking pin 5. The locking pin 5 can then be pushed to unlock, making the unlocking operation more convenient and simple.

[0026] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0027] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. An axial flow fan, comprising a housing (1), wherein a protective mesh cover is provided on the housing (1), characterized in that: The protective mesh cover includes a mesh body (2), and the edge of the mesh body (2) is provided with a number of connecting pieces (3) for fitting against the inner wall of the housing (1). The connecting pieces (3) are provided with insertion holes (4). The side wall of the housing (1) is provided with a number of through holes for communicating with locking holes. The housing (1) is provided with a number of locking components. The locking components include locking pins (5). The locking pins (5) can move up and down. The locking pins (5) are used to pass through the through holes and insert into the insertion holes (4).

2. An axial flow fan according to claim 1, characterized in that: The locking assembly also includes a connecting seat (6) fixedly connected to the housing (1), and a slider (7) is slidably connected inside the connecting seat (6). The locking pin (5) is fixedly connected to the slider (7).

3. An axial flow fan according to claim 2, characterized in that: A spring (8) is connected to the slider (7), and the end of the spring (8) away from the slider (7) is fixedly connected to the inner wall of the connecting seat (6).

4. An axial flow fan according to claim 2, characterized in that: The connecting seat (6) has a groove (9) along its length, and the slider (7) has a paddle (10) that passes through the groove (9).

5. An axial flow fan according to claim 4, characterized in that: The paddle (10) is provided with a first magnetic block (11), and the connecting seat (6) is provided with a second magnetic block (12) that matches the first magnetic block (11).

6. An axial flow fan according to claim 1, characterized in that: The locking pin (5) is fitted with an elastic sleeve (13), which is made of rubber material.

7. An axial flow fan according to claim 1, characterized in that: The inner wall of the housing (1) is provided with a plurality of stop plates (14). When the connecting plate (3) abuts against the stop plate (14), the locking hole and the through hole are connected.

8. An axial flow fan according to claim 1, characterized in that: The mesh (2) is made of stainless steel.

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