Durable fan sealing bush structure

Abstract

The utility model relates to a durable fan sealing bush structure which comprises an outer bush body, an inner bush ring and a motor body, the motor body is fixedly installed on one side of an installation frame on the inner wall of a fan outer cylinder, an output shaft of the motor body penetrates through a hole in the installation frame and extends to the other side of the installation frame, the outer bush body is arranged outside the output shaft in a sleeved mode, and the inner bush ring is arranged on the outer bush body. The inner lining ring is fixedly embedded in the output shaft, the outer lining body is rotationally connected with the inner lining ring in a sealed mode, and one side of the outer lining body is fixedly connected with the side, away from the motor body, of the mounting frame in a sealed mode. The lining ring is fixedly embedded in the output shaft, the outer lining body is arranged on the periphery of the output shaft in a sleeved mode, one end of the outer lining body is fixed to the side portion of the installation frame in a sealed mode, the other end of the outer lining body is connected with the outer lining body in a sealed and rotating mode, the whole sealing lining structure is formed, and a gap between the output shaft and a hole in the installation frame can be covered. External dust particle impurities are prevented from entering the shell of the motor body through the gap, and the service life of the motor body is effectively prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of fans, in particular to a durable fan sealing bushing structure. Background Art

[0002] Axial flow fans are ventilation devices that utilize an impeller's rotation to generate airflow along an axial axis. They are widely used in industries, buildings, and homes. They are characterized by their compact structure, high air volume, low pressure, and high efficiency, making them suitable for applications requiring uniform ventilation or cooling over large areas. Axial flow fans typically consist of a motor, impeller, and casing. Driven by the motor, the impeller rotates at high speed, propelling air along the axis, achieving rapid air circulation and delivery. Their design allows for greater air flow at lower pressure for the same power output, making them suitable for ventilation systems requiring high air volume but low pressure.

[0003] The motor of an axial flow fan is usually installed on a mounting frame, and its output shaft passes through a hole in the mounting frame to the other side. Due to the lack of sealing in the gap between the hole in the mounting frame and the output shaft, especially under complex working conditions, dust particles will penetrate the above gap and enter the motor housing through the gap between the motor housing and the output shaft, affecting the service life of the motor. Utility Model Content

[0004] The purpose of the utility model is to provide a durable fan sealing bushing structure, which effectively solves the problems raised in the above background technology.

[0005] In order to achieve the above-mentioned purpose, the present utility model provides the following technical solutions.

[0006] A durable fan sealing bushing structure includes an outer bushing body, an inner bushing ring and a motor body. The motor body is fixedly mounted on one side of a mounting bracket on the inner wall of the fan outer cylinder. The output shaft of the motor body extends to the other side through a hole on the mounting bracket. The outer bushing body is sleeved on the outside of the output shaft. The inner bushing ring is fixedly embedded on the output shaft. The outer bushing body and the inner bushing ring are rotatably and sealedly connected. One side of the outer bushing body is fixedly and sealedly connected to a side of the mounting bracket facing away from the motor body.

[0007] Furthermore, the outer bushing body includes an annular cover, an embedding body fixedly embedded in one side of the annular cover, and a fastening ring fixed on the other side of the annular cover. The output shaft is provided with an annular recessed portion, the inner liner ring is fixedly and sealingly embedded in the annular recessed portion, the inner liner ring is provided with an annular embedding groove, the embedding body is embedded in the annular embedding groove, the embedding body is rotatably fitted with the inner wall of the annular embedding groove, and the fastening ring is fixed on the mounting frame.

[0008] Furthermore, the fastening ring is evenly distributed with jacks, each jack is inserted with a fastening screw, and the fastening screws are respectively screwed into the corresponding screw holes on the mounting frame, and the fastening ring fits tightly against the side surface of the mounting frame.

[0009] Furthermore, an annular groove is provided on the surface where the fastening ring and the mounting frame are in contact, and a rubber ring is fixed in the annular groove. When the fastening ring and the mounting frame are in contact, the rubber ring and the mounting frame are tightly contacted by squeezing.

[0010] Furthermore, side ring bodies are fixed at both ends of the inner lining ring, and the inner edge walls of the ring bodies on both sides are fixed to the outer wall of the output shaft respectively.

[0011] Furthermore, an L-shaped oil injection channel is provided on the outer wall surface of the inner liner ring, and a plurality of oil outlet holes are arranged in an array along the length direction of the output shaft on the inner wall of the annular mounting groove, and each oil outlet hole is connected to the oil injection channel.

[0012] Furthermore, noise reduction cotton distributed around the output shaft is fixed on the inner wall of the annular cover.

[0013] Furthermore, the embedding body and the annular embedding groove are made of high carbon steel or hard alloy steel.

[0014] Compared with the prior art, the beneficial effects of the present invention are as follows.

[0015] The utility model forms a sealing bushing structure by fixing an inner liner ring on the output shaft and sleeves an outer liner body on the periphery of the output shaft, and one end of the outer liner body is sealed and fixed to the side of the mounting frame, and the other end is sealed and rotatably connected to the outer liner body, so that the gap between the output shaft and the hole on the mounting frame is covered to prevent external dust particles and impurities from entering the housing of the motor body through the gap, thereby effectively improving the service life of the motor body. The inner liner ring and the outer liner body are rotatably connected, which does not cause obstruction or interference to the rotation of the output shaft. The structural layout is reasonable and the practicability is high.

[0016] The embedding body and the annular embedding groove in the utility model are made of high carbon steel or hard alloy steel, which has high strength and wear resistance, thereby ensuring good wear resistance between the embedding body and the annular embedding groove, making the bushing structure more durable.

[0017] The utility model fixes noise reduction cotton distributed around the output shaft on the inner wall of the annular cover, thereby achieving the effect of noise reduction and sound insulation, avoiding excessive noise in the bushing structure when the fan is working, and by adding side rings fixed to the outer wall of the output shaft at both ends of the inner liner ring, the contact area between the inner liner ring and the output shaft can be increased, thereby improving the bonding strength between the inner liner ring and the output shaft, ensuring that the entire structure is more stable.

[0018] The utility model provides an oil injection channel and an oil outlet hole on the inner liner ring, and injects lubricating oil into the oil injection channel. When the inner liner ring rotates following the output shaft, the lubricating oil in the oil injection channel can be centrifugally thrown out from the oil outlet hole to between the embedded body and the inner wall of the annular embedded groove, thereby effectively lubricating and alleviating the wear between the embedded body and the annular embedded groove, further increasing the durability of the outer bushing body and the inner liner ring. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a three-dimensional schematic diagram of the overall structure of the utility model;

[0020] Figure 2 This is one of the schematic diagrams of the outer bushing structure in the present utility model;

[0021] Figure 3 This is the second schematic diagram of the outer bushing structure in the present utility model;

[0022] Figure 4 This is a schematic diagram of the inner liner ring structure in the present utility model;

[0023] Figure 5 It is a schematic cross-sectional view of a local structure in the present utility model;

[0024] Figure 6 for Figure 5 A magnified schematic diagram of the structure in the middle.

[0025] In the figure: 1. Fan outer cylinder; 11. Mounting frame; 2. Outer bushing; 21. Annular cover; 22. Embedded body; 23. Fastening ring; 231. Socket; 232. Fastening screw; 233. Annular groove; 234. Rubber ring; 24. Noise reduction cotton; 3. Inner liner ring; 31. Annular embedded groove; 32. Side ring body; 33. Oil injection channel; 34. Oil outlet; 7. Motor body; 8. Output shaft; 9. Shaft; 91. Fan blade. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0027] In the description of the embodiments of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms, "connection", and "installation" should be understood in a broad sense. For example, "connection" can be a detachable connection or a non-detachable connection; it can be a direct connection or an indirect connection through an intermediate medium. In addition, "communication" can be a direct connection or an indirect connection through an intermediate medium. Among them, "fixed" means that they are connected to each other and the relative position relationship after connection remains unchanged. The directional terms mentioned in the embodiments of the present invention, such as "inside", "outside", "top", "bottom", etc., are only reference to the directions of the accompanying drawings. Therefore, the directional terms used are for better and clearer explanation and understanding of the embodiments of the present invention, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the embodiments of the present invention.

[0028] In the embodiments of the present invention, the terms "first" and "second" are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly specify the number of technical features indicated. Therefore, features specified as "first" or "second" may explicitly or implicitly include one or more of the features.

[0029] See also Figures 1-6 The utility model provides a durable fan sealing bushing structure, including an outer bushing body 2, an inner liner ring 3 and a motor body 7. The motor body 7 is installed and fixed on one side of a mounting bracket 11 on the inner wall of the fan outer cylinder 1. The output shaft 8 of the motor body 7 extends to the other side through the hole on the mounting bracket 11. The end of the output shaft 8 is fixedly connected to a shaft rod 9 through a coupling. The shaft rod 9 is equipped with fan blades 91. When the motor body 7 works, the output shaft 8 drives the shaft rod 9 and the fan blades 91 to rotate, driving the airflow to flow in the fan outer cylinder 1, forming a blowing effect.

[0030] The outer bushing body 2 is sleeved on the outside of the output shaft 8, and the inner bushing ring 3 is fixedly embedded on the output shaft 8. The outer bushing body 2 and the inner bushing ring 3 are rotatably sealed and connected. One side of the outer bushing body 2 is fixedly sealed and connected to the side of the mounting bracket 11 away from the motor body 7. The inner bushing ring 3 is fixedly embedded on the output shaft 8, and the outer bushing body 2 is sleeved on the periphery of the output shaft 8, and one end of the outer bushing body 2 is sealed and fixed to the side of the mounting bracket 11, and the other end is sealed and rotatably connected to the outer bushing body 2 to form an entire sealed bushing structure, which can cover the gap between the output shaft 8 and the holes on the mounting bracket 11 to prevent external dust particles and impurities from entering the shell of the motor body 7 through the gap, thereby effectively improving the service life of the motor body 7.

[0031] Secondly, the motor body 7 is fixed to the side of the mounting frame 11 by bolts. The end face of the motor body 7 fits tightly against the mounting frame 11 , which has a sealing effect and can prevent dust particles and impurities from entering the housing of the motor body 7 from the other side of the mounting frame 11 .

[0032] Specifically, the outer bushing body 2 includes an annular cover 21, an embedding body 22 fixedly embedded in one side of the annular cover 21, and a fastening ring 23 fixed on the other side of the annular cover 21. The output shaft 8 has an annular recess, and the inner bushing ring 3 is fixedly and sealedly embedded in the annular recess. The inner bushing 3 is provided with an annular embedding groove 31, and the embedding body 22 is embedded in the annular embedding groove 31. The embedding body 22 is rotatably fitted with the inner wall of the annular embedding groove 31 to realize a rotating sealed connection between the outer bushing body 2 and the inner bushing ring 3. The fastening ring 23 is fixed on the mounting frame 11 to realize a fixed and sealed connection between the outer bushing body 2 and the mounting frame 11.

[0033] Among them, the embedding body 22 and the annular embedding groove 31 are made of high carbon steel or carbide steel materials, such as AISI1070 high carbon steel, AISI1080 high carbon steel, AISI1095 high carbon steel, WC-Co series carbide, WC-TiC-Co series carbide and WC-TiC-Co series carbide, etc., which have high strength and wear resistance, thereby ensuring good wear resistance between the embedding body 22 and the annular embedding groove 31, making the bushing structure more durable.

[0034] Noise reduction cotton 24 distributed around the output shaft 8 is fixed on the inner wall of the annular cover 21 to reduce noise and sound insulation, thereby preventing excessive noise from being generated in the bushing structure when the fan is working.

[0035] In addition, side ring bodies 32 are fixed at both ends of the inner lining ring 3, and the inner edge walls of the ring bodies 32 on both sides are fixed to the outer walls of the output shaft 8 respectively. By adding side ring bodies 32 fixed to the outer walls of the output shaft 8 at both ends of the inner lining ring 3, the contact area with the output shaft 8 can be increased, thereby improving the bonding strength between the inner lining ring 3 and the output shaft 8, ensuring that the entire structure is more stable.

[0036] Specifically, the fastening ring 23 is evenly distributed with sockets 231, and each socket 231 is inserted with a fastening screw 232. The fastening screws 232 are respectively threaded into the corresponding screw holes on the mounting frame 11. The fastening screws 232 are tightened into the screw holes on the mounting frame 11 to achieve the fastening of the fastening ring 23 and the mounting frame 11, and then the outer bushing body 2 and the mounting frame 11 can be fixed, and the fastening ring 23 is tightly fitted to the side surface of the mounting frame 11.

[0037] In addition, an annular groove 233 is provided on the surface where the fastening ring 23 and the mounting frame 11 are in contact, and a rubber ring 234 is fixed in the annular groove 233. When the fastening ring 23 and the mounting frame 11 are in contact, the rubber ring 234 and the mounting frame 11 are squeezed and tightly fitted, which has a good sealing effect and further improves the dust-proof effect.

[0038] Specifically, an L-shaped oil injection channel 33 is provided on the outer wall surface of the inner liner ring 3, and a plurality of oil outlet holes 34 are arranged in an array along the length direction of the output shaft 8 on the inner wall of the annular embedding groove 31. Each oil outlet hole 34 is connected to the oil injection channel 33. By injecting lubricating oil into the oil injection channel 33, the lubricating oil in the oil injection channel 33 can be centrifugally thrown out from the oil outlet hole 34 to between the embedding body 22 and the inner wall of the annular embedding groove 31 during the process of the inner liner ring 3 rotating with the output shaft 8, thereby effectively lubricating and alleviating the degree of wear between the embedding body 22 and the annular embedding groove 31, thereby further increasing the durability of the outer bushing body 2 and the inner liner ring 3.

[0039] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the present invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the present invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the present invention is defined by the appended claims, not the foregoing description, and all variations within the meaning and range of equivalents of the claims are intended to be encompassed within the present invention. Any reference sign in a claim should not be construed as limiting the claim to which it relates.

Claims

1. A durable fan sealing bushing structure, characterized by: It comprises an outer bushing body (2), an inner lining ring (3) and a motor body (7); The motor body (7) is mounted and fixed on one side of a mounting frame (11) on the inner wall of the fan outer cylinder (1), and the output shaft (8) of the motor body (7) passes through a hole on the mounting frame (11) and extends to the other side; The outer bushing body (2) is sleeved on the outside of the output shaft (8), and the inner bushing ring (3) is fixedly embedded on the output shaft (8); The outer bushing body (2) is connected to the inner bushing ring (3) in a rotationally sealed manner, and one side of the outer bushing body (2) is fixedly connected to a side of the mounting frame (11) facing away from the motor body (7).

2. A durable fan sealing bushing structure according to claim 1, characterized in that: The outer bushing body (2) comprises an annular cover (21), an embedding body (22) fixedly embedded in one side of the annular cover (21), and a fastening ring (23) fixed on the other side of the annular cover (21); The output shaft (8) has an annular recessed portion, and the inner liner ring (3) is fixedly and sealingly embedded in the annular recessed portion; The inner lining ring (3) is provided with an annular embedding groove (31), the embedding body (22) is embedded in the annular embedding groove (31), and the embedding body (22) is rotatably fitted with the inner wall of the annular embedding groove (31); The fastening ring (23) is fixed on the mounting frame (11).

3. The durable fan sealing bushing structure according to claim 2, characterized in that: The fastening ring (23) is evenly distributed with insertion holes (231), and each insertion hole (231) is inserted with a fastening screw (232); The fastening screws (232) are respectively screwed into corresponding screw holes on the mounting frame (11); The fastening ring (23) is tightly fitted to the side surface of the mounting frame (11).

4. The durable fan sealing bushing structure according to claim 2, characterized in that: An annular groove (233) is provided on the surface of the fastening ring (23) that contacts the mounting frame (11), and a rubber ring (234) is fixed in the annular groove (233); When the fastening ring (23) is fitted to the mounting frame (11), the rubber ring (234) is tightly fitted to the mounting frame (11) in an extrusion manner.

5. The durable fan sealing bushing structure according to claim 2, characterized in that: Side ring bodies (32) are fixed to both ends of the inner lining ring (3), and the inner edge walls of the two side ring bodies (32) are fixed to the outer wall of the output shaft (8).

6. The durable fan sealing bushing structure according to claim 2, characterized in that: An L-shaped oil injection channel (33) is provided on the outer wall surface of the inner lining ring (3), and a plurality of oil outlet holes (34) are arranged in an array along the length direction of the output shaft (8) on the inner wall of the annular mounting groove (31), and each of the oil outlet holes (34) is communicated with the oil injection channel (33).

7. The durable fan sealing bushing structure according to claim 2, characterized in that: Noise reduction cotton (24) distributed around the output shaft (8) is fixed on the inner wall of the annular cover (21).

8. The durable fan sealing bushing structure according to claim 2, characterized in that: The embedding body (22) and the annular embedding groove (31) are made of high carbon steel or hard alloy steel.

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