An air inlet protection device for an axial fan

Abstract

The utility model discloses an air inlet protection equipment for axial flow fan, including installation sleeve, air inlet protection equipment for axial flow fan still includes grating, and grating detachable installation is at one side of installation sleeve, and the periphery of grating is provided with sealing washer, and the surface of sealing washer is inlaid with the edge of installation sleeve. In the above -mentioned scheme, through setting up grating in installation sleeve air inlet one side, can carry out the barrier to extraneous matter, make with the gear two engagement can synchronous rotation, thereby drive the communication post of gear two inner ring connection and the rotation of air supply cavity around grating surface, simultaneously, the air supply mechanism produces the wind force, finally, the wind force blows out in the interstice of grating through air supply cavity, thereby not only realized the barrier to extraneous matter, avoided its entry fan inside influence normal operation, and can periodically blow off the small foreign matter attached between grating interstice, avoid the influence of foreign matter ventilation efficiency of grating, thereby improved device practicality.

Description

Technical Field

[0001] This utility model relates to the field of axial flow fan technology, and more specifically, to an air inlet protection device for an axial flow fan. Background Technology

[0002] When the driver of an existing axial flow fan is installed in the mounting sleeve, it is usually fixed with bolts. The driver will vibrate during operation, and long-term vibration can easily cause the bolts to loosen, resulting in unstable shaking of the driver and causing the fan blades to strike the mounting sleeve.

[0003] To address the aforementioned issues, patent document publication number CN222334038U discloses a novel axial flow fan, comprising an installation sleeve, an internal drive unit, fan blades mounted on the output shaft of the drive unit, and an installation structure. The installation structure includes a mating plate disposed on the surface of the drive unit and inserted into a retaining ring. A fixing bracket is provided on the surface of the retaining ring and is fixed to the inner wall of the installation sleeve by bolts. A limiting seat is provided on the inner wall of the installation sleeve, and a fastening structure is provided on the limiting seat.

[0004] However, it still has some drawbacks in actual use. For example, the axial flow fan uses pressure blocks to press and tighten the bolt installation points of the fixed frame, which improves the stability of the connection between the fixed frame and the installation sleeve. However, since there is no corresponding protective structure at the air inlet of the axial flow fan, foreign objects can easily enter the fan during long-term use, thus affecting the normal use of the fan. Utility Model Content

[0005] In order to overcome the above-mentioned defects of the prior art, the embodiments of this utility model provide an air inlet protection device for axial flow fans, so as to solve the problem that the air inlet of the existing axial flow fans does not have a protective structure.

[0006] To solve the above-mentioned technical problems, this utility model provides the following technical solution: an inlet protection device for an axial flow fan, including an installation sleeve, the inlet protection device for the axial flow fan further including...

[0007] A grille is detachably installed on one side of a mounting sleeve, and a sealing ring is provided around the grille, the surface of which fits against the edge of the mounting sleeve.

[0008] A connecting frame is fixedly installed on the side of the grid surface opposite to the mounting sleeve. A motor is provided on the side of the connecting frame. A control terminal is provided outside the motor. A gear is fixedly connected to the drive shaft of the motor.

[0009] Gear 2, the inner ring of gear 2 is fixedly connected to a connecting column, the surface of the connecting column is rotatably connected to the inner wall of the grid, and the outer edge of gear 2 meshes with the outer edge of gear 1;

[0010] An air supply mechanism is fixedly installed on the surface of a connecting frame. A control terminal is provided on the outside of the air supply mechanism. A rigid connecting pipe is fixedly connected to the air outlet of the air supply mechanism. The surface of the rigid connecting pipe is in contact with the inner wall of the connecting frame. One end of the rigid connecting pipe relative to the air supply mechanism is rotatably connected to one side of a connecting column.

[0011] An air supply chamber is fixedly connected to one end of the connecting column relative to the rigid connecting pipe.

[0012] It also includes a mounting plate and a snap-fit ​​groove. The mounting plate is fixedly installed on the edge of the grid. The mounting plate is set with an arc surface structure. One side of the mounting plate is in contact with the surface of the mounting sleeve. The snap-fit ​​groove is opened on the side of the mounting plate surface opposite to the mounting sleeve.

[0013] It also includes a fixing component, which is disposed on the side of the mounting sleeve near the grid.

[0014] The fixing assembly includes a connecting seat, a damping connecting shaft, a mounting bracket, a base, a spring, a guide post, a connecting plate, and a snap-fit ​​post. The connecting seat is fixedly installed on the surface of the mounting sleeve. The top end of the mounting bracket is rotatably connected to the connecting seat via the damping connecting shaft. The base is located at the bottom end of the mounting bracket. One end of the spring is fixedly connected to the interior of the base, and the other end of the spring is fixedly connected to the interior of the guide post. The surface of the guide post is slidably connected to the inner wall of the base. The snap-fit ​​post is fixedly connected to one end of the guide post via the connecting plate. The side of the snap-fit ​​post is in contact with the inner wall of the mounting bracket, and the surface of the snap-fit ​​post is in contact with the interior of the snap-fit ​​groove.

[0015] The beneficial effects of the above-mentioned technical solution of this utility model are as follows:

[0016] In the above scheme, by installing a grille on one side of the air inlet of the mounting sleeve, foreign objects can be blocked. In addition, the motor and the air supply mechanism are started synchronously by the set control terminal one and control terminal two. The motor drives gear one to rotate, so that gear two meshing with it can rotate synchronously. This causes the connecting column connected to the inner ring of gear two and the air supply cavity to rotate around the grille surface. At the same time, the air supply mechanism generates air force. Finally, the air force blows out through the air supply cavity into the gaps of the grille. This not only blocks foreign objects from entering the fan and affecting normal operation, but also periodically blows away small foreign objects attached to the gaps of the grille, preventing foreign objects from affecting the ventilation efficiency of the grille, thereby improving the practicality of the device.

[0017] By moving the snap-fit ​​post horizontally, the spring inside the guide post is stretched and deformed, and the snap-fit ​​post separates from the snap-fit ​​groove on the surface of the mounting plate. Then, the mounting bracket is rotated around the damping connecting shaft, causing the mounting bracket to rotate away from the surface of the mounting plate. After that, the grille can be separated and disassembled from the mounting sleeve by horizontal movement, so as to maintain the inside of the mounting sleeve or the grille and its corresponding components. This achieves quick assembly and disassembly of the grille and further improves the practicality of the device. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0019] Figure 2 This is a three-dimensional assembly drawing of the overall device of this utility model;

[0020] Figure 3 This is a schematic diagram of the connection structure between the air supply cavity and the connecting column of this utility model;

[0021] Figure 4 This is a schematic diagram of the fixing component structure of this utility model.

[0022] [Figure Labels]

[0023] 1. Mounting sleeve; 2. Grille; 3. Sealing ring; 4. Connecting frame; 5. Motor; 6. Control terminal one; 7. Gear one; 8. Gear two; 9. Connecting column; 10. Air supply mechanism; 11. Control terminal two; 12. Rigid connecting pipe; 13. Air supply chamber; 14. Mounting plate; 15. Snap-fit ​​groove; 16. Fixing assembly; 161. Connecting seat; 162. Damping connecting shaft; 163. Mounting frame; 164. Base; 165. Spring; 166. Guide column; 167. Connecting plate; 168. Snap-fit ​​column. Detailed Implementation

[0024] To make the technical problems, technical solutions and advantages of this utility model clearer, a detailed description will be given below in conjunction with the accompanying drawings and specific embodiments.

[0025] As attached Figure 1 To be continued Figure 4 An embodiment of this utility model provides an inlet protection device for an axial flow fan, including an mounting sleeve 1. The inlet protection device for the axial flow fan also includes...

[0026] The grille 2 is detachably installed on one side of the mounting sleeve 1. A sealing ring 3 is provided around the grille 2, and the surface of the sealing ring 3 fits against the edge of the mounting sleeve 1.

[0027] A connecting frame 4 is fixedly installed on the side of the grid 2 opposite to the mounting sleeve 1. A motor 5 is provided on the side of the connecting frame 4. A control terminal 6 is provided on the outside of the motor 5. A gear 7 is fixedly connected to the drive shaft of the motor 5.

[0028] Gear 2 8, the inner ring of gear 2 8 is fixedly connected to a connecting post 9, the surface of the connecting post 9 is rotatably connected to the inner wall of the grid 2, and the outer edge of gear 2 8 meshes with the outer edge of gear 1 7;

[0029] An air supply mechanism 10 is fixedly installed on the surface of the connecting frame 4. A control terminal 11 is provided on the outside of the air supply mechanism 10. A rigid connecting pipe 12 is fixedly connected to the air outlet of the air supply mechanism 10. The surface of the rigid connecting pipe 12 is in contact with the inner wall of the connecting frame 4. One end of the rigid connecting pipe 12 relative to the air supply mechanism 10 is rotatably connected to one side of the connecting column 9.

[0030] The control terminal 6 and control terminal 11 are both PLC controllers, which can be preset with time commands to synchronously start the motor 5 and the air supply mechanism 10 at specific time intervals, so that the air supply cavity 13 can automatically clean the grille 2, reducing the degree of human intervention.

[0031] Air supply chamber 13 is fixedly connected to one end of the connecting post 9 relative to the rigid connecting pipe 12.

[0032] It also includes a mounting plate 14 and a snap-fit ​​groove 15. The mounting plate 14 is fixedly installed on the edge of the grille 2. The mounting plate 14 is set with an arc surface structure. One side of the mounting plate 14 is in contact with the surface of the mounting sleeve 1. The snap-fit ​​groove 15 is opened on the side of the surface of the mounting plate 14 opposite to the mounting sleeve 1.

[0033] It also includes a fixing component 16, which is disposed on the side of the mounting sleeve 1 near the grille 2.

[0034] The fixing assembly 16 includes a connecting seat 161, a damping connecting shaft 162, a mounting bracket 163, a base 164, a spring 165, a guide post 166, a connecting plate 167, and a snap-fit ​​post 168. The connecting seat 161 is fixedly mounted on the surface of the mounting sleeve 1. The top end of the mounting bracket 163 is rotatably connected to the connecting seat 161 via the damping connecting shaft 162. The base 164 is located at the bottom end of the mounting bracket 163. One end of the spring 165 is fixedly connected to the interior of the base 164, and the other end of the spring 165 is connected to the guide post 166. The guide post 166 is internally fixedly connected to the inner wall of the base 164. The snap-fit ​​post 168 is fixedly connected to one end of the guide post 166 through the connecting plate 167. The side of the snap-fit ​​post 168 fits against the inner wall of the mounting bracket 163. The surface of the snap-fit ​​post 168 contacts the inside of the snap-fit ​​groove 15. Through the damping connecting shaft 162, the position of the mounting bracket 163 can be fixed to a certain extent after the mounting bracket 163 rotates, so as to prevent the mounting bracket 163 from accidentally moving when limiting and fixing the grille 2, which would affect the stability of the grille 2 installation.

[0035] The working process of this utility model is as follows: By setting a grille 2 on the air inlet side of the mounting sleeve 1, foreign objects can be blocked. In addition, the motor 5 and the air supply mechanism 10 are started synchronously by the set control terminal 6 and control terminal 11. The motor 5 drives the gear 7 to rotate, so that the gear 8 meshing with it can rotate synchronously, thereby driving the connecting column 9 connected to the inner ring of the gear 8 and the air supply cavity 13 to rotate around the surface of the grille 2. At the same time, the air supply mechanism 10 generates wind power, and finally the wind power is blown out into the gap of the grille 2 through the air supply cavity 13.

[0036] Finally, the following points should be noted: First, in the description of this application, it should be noted that, unless otherwise specified and limited, the terms "installation", "connection", and "linkage" should be interpreted broadly, and can be mechanical or electrical connections, or internal connections between two components, or direct connections. "Up", "down", "left", "right", etc. are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may change.

[0037] Secondly: The accompanying drawings of the embodiments disclosed in this utility model only involve the structures involved in the embodiments disclosed in this utility model. Other structures can refer to the general design. In the absence of conflict, the same embodiment and different embodiments of this utility model can be combined with each other.

[0038] Finally: The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. 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. An inlet protection device for an axial flow fan, comprising an mounting sleeve (1), characterized in that, The inlet protection device for the axial flow fan also includes The grille (2) is detachably installed on one side of the mounting sleeve (1). A sealing ring (3) is provided around the grille (2), and the surface of the sealing ring (3) is in contact with the edge of the mounting sleeve (1). A connecting frame (4) is fixedly installed on the side of the grid (2) opposite to the mounting sleeve (1). A motor (5) is provided on the side of the connecting frame (4). A control terminal (6) is provided outside the motor (5). A gear (7) is fixedly connected to the drive shaft of the motor (5). Gear 2 (8), the inner ring of gear 2 (8) is fixedly connected to a connecting column (9), the surface of the connecting column (9) is rotatably connected to the inner wall of the grid (2), and the outer edge of gear 2 (8) meshes with the outer edge of gear 1 (7); An air supply mechanism (10) is fixedly installed on the surface of a connecting frame (4). A control terminal (11) is provided on the outside of the air supply mechanism (10). A rigid connecting pipe (12) is fixedly connected to the air outlet of the air supply mechanism (10). The surface of the rigid connecting pipe (12) is in contact with the inner wall of the connecting frame (4). One end of the rigid connecting pipe (12) relative to the air supply mechanism (10) is rotatably connected to one side of the connecting column (9). Air supply cavity (13), which is fixedly connected to one end of the connecting column (9) relative to the rigid connecting pipe (12).

2. The inlet protection device for an axial flow fan according to claim 1, characterized in that, It also includes a mounting plate (14) and a snap-fit ​​groove (15). The mounting plate (14) is fixedly installed on the edge of the grille (2). The mounting plate (14) is configured with an arc surface structure. One side of the mounting plate (14) is in contact with the surface of the mounting sleeve (1). The snap-fit ​​groove (15) is opened on the side of the surface of the mounting plate (14) opposite to the mounting sleeve (1).

3. The inlet protection device for an axial flow fan according to claim 1, characterized in that, It also includes a fixing component (16) disposed on the side of the mounting sleeve (1) near the grid (2).

4. The inlet protection device for an axial flow fan according to claim 3, characterized in that, The fixing assembly (16) includes a connecting seat (161), a damping connecting shaft (162), a mounting bracket (163), a base (164), a spring (165), a guide post (166), a connecting plate (167), and a snap-fit ​​post (168). The connecting seat (161) is fixedly mounted on the surface of the mounting sleeve (1). The top end of the mounting bracket (163) is rotatably connected to the connecting seat (161) via the damping connecting shaft (162). The base (164) is located at the bottom end of the mounting bracket (163). The spring... One end of the spring (165) is fixedly connected to the inside of the base (164), and the other end of the spring (165) is fixedly connected to the inside of the guide post (166). The surface of the guide post (166) is slidably connected to the inner wall of the base (164). The snap-fit ​​post (168) is fixedly connected to one end of the guide post (166) through the connecting plate (167). The side of the snap-fit ​​post (168) is in contact with the inner wall of the mounting bracket (163). The surface of the snap-fit ​​post (168) is in contact with the inside of the snap-fit ​​groove (15).

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