Mesh cover applied to axial flow fan

Abstract

The utility model discloses a mesh enclosure applied to an axial flow fan, which relates to the technical field of fans, and adopts the technical scheme that the mesh enclosure comprises a mesh enclosure body and an air guide ring, a limiting piece is arranged on the mesh enclosure body, a limiting bulge is arranged on the limiting piece, a notch is formed in the air guide ring, and a square hole is formed in the air guide ring. The mesh enclosure body and the air guide ring are fixed by embedding the limiting protrusions into the square holes, through holes are formed in the limiting pieces and the air guide ring, an ejector block assembly is detachably connected to the air guide ring, and the width of the ejector block assembly can be adjusted. By arranging the limiting piece and the notch, eccentricity of the fan blade and the air guide ring caused by operation errors during installation by workers is avoided, the coaxial precision of the fan blade and the air guide ring is improved, six-axis positioning of the air guide ring and the mesh enclosure is achieved by arranging the ejector block assembly, the fixing effect is better, and it is guaranteed that the fan blade and the mesh enclosure are not prone to being damaged after being used for a long time. And the fan blades do not collide with the air guide ring due to displacement generated by vibration, so that the accident rate is greatly reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of fans, and more particularly to a mesh cover applied to an axial flow fan. Background Art

[0002] With the continuous advancement of industrialization, axial flow fans and centrifugal fans, as an important ventilation equipment, have been widely used in industrial production and construction. In the application of fan equipment, the fan mesh cover is usually used as a fixed connector to connect and fix the motor to the panel, and at the same time provide a protective effect to prevent the high-speed moving fan blades from causing damage to the environment and operators.

[0003] Most traditional fan grilles are fixed directly with screws. During installation, it is easy for operational errors to cause the fan blades to be eccentric, affecting the performance of the fan. At the same time, since the screws can only provide horizontal rotation limits, after the fan has been running for a long time, the vibration during the operation of the fan will cause the grille and the air guide ring to shift, affecting the performance of the fan. In severe cases, it may cause the fan blades to collide with the air guide ring.

[0004] Therefore, new solutions need to be proposed to solve this problem. Utility Model Content

[0005] In view of the deficiencies in the prior art, the present invention aims to provide a mesh cover for an axial flow fan.

[0006] The above technical purpose of the present utility model is achieved through the following technical solutions: a mesh cover used for an axial flow fan, comprising a mesh cover body and an air guide ring, the mesh cover body is provided with a limiting plate, the limiting plate is provided with a limiting protrusion, the air guide ring is provided with a notch for accommodating the insertion of the limiting plate, the air guide ring is provided with a square hole arranged close to the notch and capable of accommodating the embedding of the limiting protrusion, the mesh cover body and the air guide ring are fixed by embedding the limiting protrusion into the square hole, the limiting plate and the air guide ring are both provided with through holes, the air guide ring is detachably connected with a top block assembly for tightening the air guide ring and the mesh cover body, and the width of the top block assembly can be adjusted.

[0007] The present invention is further configured such that: the length of the limiting piece is greater than the length of the notch; when the limiting protrusion is embedded in the square hole, the bottom surface of the limiting piece presses against the top surface of the air guide ring.

[0008] The utility model is further configured as follows: the top block assembly includes an open state and a closed state. When the top block assembly is in the open state, the two sides of the top block assembly respectively press against the air guide ring and the mesh cover body. When the top block assembly is in the closed state, the width of the top block assembly is smaller than the width of the through hole.

[0009] The utility model is further configured as follows: the top block assembly includes a bolt, a threaded top block and a movable top block; the movable top block is provided with a waist-shaped hole for accommodating the sliding of the bolt; and the sides of the movable top block and the threaded top block facing each other are both provided with inclined surfaces.

[0010] The utility model is further configured as follows: both the air guide ring and the limiting plate are provided with baffles, and the two baffles are symmetrically arranged on both sides of the through hole; when the top block assembly is in the open state, the movable top block and the threaded top block both press against adjacent baffles.

[0011] The utility model is further configured as follows: a groove is provided on the limiting piece, and when the limiting protrusion is embedded in the square hole, the inner wall of the notch presses against the inner wall of the groove.

[0012] The utility model is further configured as follows: the limiting piece is provided with a plurality of arc-shaped guide surfaces.

[0013] The utility model is further configured as follows: four limit plates are provided and an array is arranged on the outer edge of the mesh cover body.

[0014] In summary, the present invention has the following beneficial effects:

[0015] 1. By setting the limiting piece and the notch, a rotary groove installation structure is formed between the mesh cover body and the air guide ring. The operator only needs to insert the limiting piece into the notch when rotating the mesh cover body and embed the limiting protrusion into the square hole. The limiting protrusion can strengthen the connection strength between the mesh cover body and the air guide ring, and play a pre-fixing effect. At the same time, it also prevents the fan blade and the air guide ring from being eccentric due to operational errors during installation, thereby improving the coaxial accuracy of the fan blade and the air guide ring.

[0016] 2. By setting up the top block assembly, the operator can adjust the width of the top block assembly and make it press against the mesh cover body and the air guide ring after fixing the mesh cover body and the air guide ring. In conjunction with the limit plate, six-axis positioning of the air guide ring and the mesh cover is achieved, and the fixing effect is better, ensuring that the fan will not collide with the wind guide ring due to displacement caused by vibration during long-term use, greatly reducing the accident rate. In addition, the design of the top block assembly with bolts and double top blocks is more convenient to disassemble and assemble than the traditional screw fixation, saving disassembly and assembly time. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural diagram of the utility model;

[0018] Figure 2 for Figure 1 A magnified schematic diagram of part A in the middle;

[0019] Figure 3 It is a structural schematic diagram of the top block assembly in the utility model.

[0020] In the figure: 1. Mesh cover body; 2. Air guide ring; 3. Limiting plate; 4. Limiting protrusion; 5. Notch; 6. Square hole; 7. Through hole; 8. Top block assembly; 9. Bolt; 10. Threaded top block; 11. Movable top block; 12. Waist-shaped hole; 13. Inclined surface; 14. Baffle; 15. Groove; 16. Guide surface. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of this application to clearly and completely describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are only part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0022] In order to better describe and illustrate the embodiments of the present application, reference may be made to one or more drawings, but the additional details or examples used to describe the drawings should not be considered as limiting the scope of the utility model invention of the present application, any of the currently described embodiments or preferred methods.

[0023] In the description of the present invention, it should be noted that the terms "length", "width", "up", "down", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating the orientation or positional relationship, are based on the positional relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention, and do not indicate that the device referred to must have a specific orientation or operate in a specific orientation. Therefore, it should not be understood as a limitation on the present invention.

[0024] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art to which this application pertains. The terms used herein in the specification of this application are for the purpose of describing specific embodiments only and are not intended to limit this application.

[0025] The present invention will be described in detail below with reference to the accompanying drawings and embodiments.

[0026] A mesh cover for an axial flow fan, such as Figure 1As shown, it includes a mesh cover body and an air guide ring, a limiting piece is provided on the mesh cover body, a limiting protrusion is provided on the limiting piece, a notch is provided on the air guide ring to accommodate the insertion of the limiting piece, a square hole is provided near the notch on the air guide ring to accommodate the limiting protrusion, the mesh cover body and the air guide ring are fixed by embedding the limiting protrusion into the square hole, and a rotary groove installation structure is formed between the mesh cover body and the air guide ring by setting the limiting piece and the notch. The operator only needs to insert the limiting piece into the notch and embed the limiting protrusion into the square hole when rotating the mesh cover body. The limiting protrusion helps to strengthen the mesh cover body and the air guide ring The connection strength between them plays a pre-fixing effect. At the same time, it also prevents workers from causing eccentricity between the fan blades and the air guide ring due to operational errors during installation, thereby improving the coaxial accuracy of the fan blades and the air guide ring. Furthermore, the length of the limit plate is greater than the length of the notch. When the limit protrusion is embedded in the square hole, the bottom surface of the limit plate is pressed against the top surface of the air guide ring. Since the bottom surface of the limit plate is pressed against the top surface of the air guide ring, the contact area is increased, thereby improving the connection stability between the mesh cover body and the air guide ring. When the fan is running, the noise and wear caused by vibration are reduced, and the operating efficiency and service life of the fan are improved.

[0027] The cam is detachably connected to the air guide ring and is used to tighten the air guide ring and the mesh cover body. Specifically, the width of the cam is adjustable, and the cam includes an open state and a closed state. When the cam is in the open state, the two sides of the cam are respectively pressed against the air guide ring and the mesh cover body. When the cam is in the closed state, the width of the cam is smaller than the width of the through hole. By setting the cam, the operator can adjust the width of the cam and press it against the mesh cover body and the air guide ring after fixing the mesh cover body and the air guide ring. In combination with the limit plate, six-axis positioning of the air guide ring and the mesh cover is achieved, and the fixing effect is better, ensuring that the fan will not collide with the fan blades due to displacement caused by vibration during long-term use, greatly reducing the accident rate. Compared with traditional screw fixing, the design of the cam assembly with bolts and double top blocks is more convenient to disassemble and assemble, saving disassembly and assembly time. At the same time, this setting can reduce vibration and noise during operation, thereby improving the durability and reliability of the fan.

[0028] Specifically, the top block assembly includes a bolt, a threaded top block and a movable top block. The movable top block is provided with a waist-shaped hole for accommodating the sliding of the bolt, and the sides of the movable top block and the threaded top block facing each other are provided with inclined surfaces. The coordinated use of the bolt and the threaded top block allows the width of the top block assembly to be adjusted, thereby facilitating the operator to fix the mesh cover body and the air guide ring. The waist-shaped hole design of the movable top block allows the bolt to pass through and be fixed easily, thereby improving the installation efficiency. The air guide ring and the limit plate are both provided with baffles, and the two baffles are symmetrically arranged on both sides of the through hole. When the top block assembly is in the open state, the movable top block and the threaded top block are both pressed against adjacent baffles. By setting the baffles, the stability of the entire structure can be improved, ensuring that no displacement or vibration occurs during operation, thereby improving the operating efficiency and life of the fan, and the design of the limit plate and the baffle can prevent misoperation during installation, ensure that the various components of the fan are correctly installed, and reduce failures caused by installation errors.

[0029] A groove is provided on the limiting piece. When the limiting protrusion is embedded in the square hole, the inner wall of the notch presses against the inner wall of the groove. The limiting piece is provided with several arc-shaped guide surfaces. There are four limiting pieces and the array is arranged on the outer edge of the mesh cover body. The coordinated use of the groove and the limiting protrusion provides a precise positioning mechanism to ensure the correct alignment between the limiting piece and the air guide ring, thereby improving the accuracy of installation. The pressing design of the inner wall of the notch and the inner wall of the groove enhances the fixing strength between the limiting piece and the air guide ring, ensuring that no displacement occurs when the fan is running. The arc-shaped guide surface helps to guide the limiting piece to be smoothly embedded in the square hole, thereby simplifying the installation process and reducing the installation time. The array-arranged limiting pieces can enhance the overall stability of the mesh cover body and help resist vibration during fan operation.

[0030] The above description is merely a preferred embodiment of the present invention. The scope of protection of the present invention is not limited to the above embodiment. All technical solutions based on the concept of the present invention are within the scope of protection of the present invention. It should be noted that for those skilled in the art, certain improvements and modifications that do not depart from the principles of the present invention should also be considered within the scope of protection of the present invention.

Claims

1. A mesh cover for an axial flow fan, characterized in that: It includes a mesh cover body and an air guide ring, the mesh cover body is provided with a limiting plate, the limiting plate is provided with a limiting protrusion, the air guide ring is provided with a notch for accommodating the insertion of the limiting plate, the air guide ring is provided with a square hole arranged close to the notch and capable of accommodating the embedding of the limiting protrusion, the mesh cover body and the air guide ring are fixed by embedding the limiting protrusion into the square hole, the limiting plate and the air guide ring are both provided with through holes, the air guide ring is detachably connected with a top block assembly for tightening the air guide ring and the mesh cover body, and the width of the top block assembly can be adjusted.

2. The mesh cover for an axial flow fan according to claim 1, characterized in that: The length of the limiting piece is greater than the length of the notch. When the limiting protrusion is embedded in the square hole, the bottom surface of the limiting piece is pressed against the top surface of the air guide ring.

3. The mesh cover for an axial flow fan according to claim 2, characterized in that: The top block assembly includes an open state and a closed state. When the top block assembly is in the open state, the two sides of the top block assembly respectively press against the air guide ring and the mesh cover body. When the top block assembly is in the closed state, the width of the top block assembly is smaller than the width of the through hole.

4. The mesh cover for an axial flow fan according to claim 3, characterized in that: The top block assembly includes a bolt, a threaded top block and a movable top block. The movable top block is provided with a waist-shaped hole for accommodating the sliding of the bolt. The sides of the movable top block and the threaded top block facing each other are both provided with inclined surfaces.

5. The mesh cover for an axial flow fan according to claim 4, characterized in that: The air guide ring and the limiting piece are both provided with baffles, and the two baffles are symmetrically arranged on both sides of the through hole. When the top block assembly is in the open state, the movable top block and the threaded top block both press against the adjacent baffles.

6. The mesh cover for an axial flow fan according to claim 1, characterized in that: A groove is provided on the limiting piece. When the limiting protrusion is embedded in the square hole, the inner wall of the notch presses against the inner wall of the groove.

7. The mesh cover for an axial flow fan according to claim 1, characterized in that: The limiting piece is provided with a plurality of arc-shaped guide surfaces.

8. The mesh cover for an axial flow fan according to claim 1, characterized in that: There are four limit plates, which are arranged in an array on the outer edge of the mesh cover body.

Images