Rotating device of a fan

Abstract

The application discloses a rotating device of a fan, which comprises a mounting disc, an impeller hub arranged on the mounting disc, an installation cavity axially arranged in the impeller hub, and a quick-release structure arranged in the installation cavity and connected with a rotating shaft. The installation cavity comprises a polygonal cavity, a circular truncated cone cavity and a cylindrical cavity arranged in sequence from bottom to top. The polygonal cavity is an external polygonal of the bottom circle of the circular truncated cone cavity. The quick-release structure is arranged in the installation cavity and connected with the rotating shaft. The quick-release structure is simple in disassembly and assembly and short in disassembly and assembly time. The quick-release structure is provided with a circular truncated cone type connecting block and a limiting polygonal body at the bottom, and the sealing property is ensured under the premise of non-interference connection.

Description

Technical Field

[0001] This invention relates to the field of wind turbine technology, specifically to a wind turbine rotation device. 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. A fan generally consists of a casing, a motor installed inside the casing, and an impeller connected to the motor. During operation, power is supplied to the motor, which drives the impeller to rotate, thus performing the operation.

[0003] Traditional impeller installation typically uses a straight shaft and straight hole interference fit to ensure a tight connection between the impeller and shaft. However, this connection method is very difficult to disassemble, requiring destructive disassembly, and cannot be reused, increasing operating costs. To address these issues, existing technologies employ various connection structures to connect the impeller and shaft. However, if the seal at the connection is poor, air channels can form inside the connection, causing the impeller to vibrate and cavitation during high-speed operation, reducing the fan's lifespan. Conversely, even with a good seal, the connection structure is located on the inner side of the impeller, connecting the shaft and the rotating shaft, making it very difficult to disassemble, replace, or repair the impeller's cylindrical casing. This makes impeller disassembly overly cumbersome, resulting in a significant waste of time and severely impacting work efficiency. Summary of the Invention

[0004] The purpose of this invention is to provide a fan rotating device that can be quickly disassembled and has good sealing performance, so as to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution:

[0006] This invention provides a rotating device for a fan, including a mounting plate and an impeller hub mounted on the mounting plate. An axially extending mounting cavity is formed within the impeller hub. The mounting cavity includes a polygonal cavity, a frustum-shaped cavity, and a cylindrical cavity arranged sequentially from bottom to top. A quick-release structure is provided within the mounting cavity. The quick-release structure includes a limiting polygonal body, a frustum-shaped connecting block, and a limiting rod. The limiting polygonal body, connecting block, and limiting rod are sequentially matched within the polygonal cavity, frustum-shaped cavity, and cylindrical cavity. A limiting polygonal body and a shaft sleeve are fixedly provided at the bottom end of the connecting block. The shaft sleeve is connected to a rotating shaft. The connecting block has an axially extending limiting hole, within which a limiting rod is provided. The limiting rod and the limiting hole are connected by a snap-fit ​​mechanism. A threaded section is provided at the top of the limiting rod, penetrating the upper end of the connecting block. A nut is fitted onto the threaded section. The polygonal shape of the polygonal cavity is the circumscribed polygon of the bottom circle of the frustum-shaped cavity.

[0007] Furthermore, the connecting block includes:

[0008] The first limiting groove is provided on the inclined surface of the connecting block with multiple first limiting grooves evenly arranged, and the first limiting groove is on the same plane as the shaft;

[0009] The first limiting strip is disposed in the first limiting groove, and the upper end of the first limiting strip is hinged to the upper end of the first limiting groove.

[0010] The buckle mechanism has a limiting through hole arranged radially along the connecting block in the first limiting groove. The diameter of the hole in the middle is larger than the diameter of the holes at both ends. A capsule-shaped buckle is arranged in the limiting through hole. A limiting ring is arranged on the capsule-shaped buckle. The limiting ring is located in the middle of the limiting hole. A return spring is arranged between the limiting ring and the right end of the middle of the limiting through hole. The return spring is sleeved on the buckle. The length of the buckle is greater than the length of the limiting through hole.

[0011] Furthermore, the limiting rod is provided with a slot that matches the buckle.

[0012] Furthermore, a second limiting strip is axially provided on the side of the limiting rod, and a second limiting groove matching the second limiting strip is provided in the limiting hole.

[0013] Furthermore, the two ends of the buckle are provided with rounded heads.

[0014] Furthermore, the polygonal cavity has a polygonal number of sides greater than or equal to 5.

[0015] Compared with the prior art, the beneficial effects of the present invention are:

[0016] The rotating device of the fan of this utility model is connected to the rotating shaft through a quick-release structure, which makes disassembly and assembly simple and reduces disassembly and assembly time. The quick-release structure is equipped with a frustum-shaped connecting block and a limiting polygonal body at the bottom, which ensures sealing performance under the premise of non-interference connection. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the internal structure of the rotating device of the fan of this utility model;

[0018] Figure 2 This is a schematic diagram of the internal structure of the rotating device of the fan of this utility model from another angle;

[0019] Figure 3 This is a three-dimensional structural diagram of the quick-release structure of this utility model;

[0020] Figure 4 This is a three-dimensional structural diagram of the limiting rod of this utility model;

[0021] Figure 5 for Figure 1 A magnified view of part A.

[0022] Explanation of reference numerals in the attached figures

[0023] In the diagram: 1. Mounting plate; 2. Impeller hub; 3. Nut; 4. Limiting rod; 5. Shaft sleeve; 6. Connecting block; 7. First limiting strip; 8. Buckle; 9. Limiting through hole; 10. Return spring; 11. Middle part of the limiting through hole; 12. Limiting ring; 13. Second limiting strip; 14. Slot; 15. Second limiting groove; 16. Limiting polygonal body. Detailed Implementation

[0024] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0025] Example 1

[0026] like Figure 1-5 As shown, a fan rotating device includes a mounting plate 1 and an impeller hub 2 mounted on the mounting plate 1. An axially extending mounting cavity is formed within the impeller hub 2. The mounting cavity includes a polygonal cavity, a frustum-shaped cavity, and a cylindrical cavity arranged sequentially from bottom to top. A quick-release structure is provided within the mounting cavity, comprising a limiting polygonal body 16, a frustum-shaped connecting block 6, and a limiting rod 4. The limiting polygonal body 16, the frustum-shaped connecting block 6, and the limiting rod 4 are sequentially matched within the polygonal cavity, the frustum-shaped cavity, and the cylindrical cavity. A limiting polygonal body 16 and a shaft sleeve 5 are fixedly mounted at the bottom end of the connecting block 6. The shaft sleeve 5 is connected to a rotating shaft. An axially extending limiting hole is provided in the connecting block 6, and a limiting rod 4 is installed within the limiting hole. The limiting rod 4 is connected to the limiting hole via a snap-fit ​​mechanism 8. A threaded section is provided at the top of the limiting rod 4, penetrating the upper end of the connecting block 6. A nut 3 is fitted onto the threaded section. The polygonal shape of the polygonal cavity is the circumscribed polygon of the bottom circle of the frustum-shaped cavity.

[0027] Connector block 6 includes:

[0028] The first limiting groove is evenly provided on the inclined surface of the connecting block 6. The first limiting groove is on the same plane as the shaft.

[0029] The first limiting strip 7 is disposed in the first limiting groove, and the upper end of the first limiting strip 7 is hinged to the upper end of the first limiting groove.

[0030] The buckle 8 mechanism has a limiting through hole 9 arranged radially along the connecting block 6 in the first limiting groove. The diameter of the hole in the middle 11 of the limiting through hole is larger than the diameter of the holes at both ends. A capsule-shaped buckle 8 is arranged in the limiting through hole 9. A limiting ring 12 is arranged on the capsule-shaped buckle 8. The limiting ring 12 is located in the middle of the limiting hole. A return spring 10 is arranged between the limiting ring 12 and the right end of the middle 11 of the limiting through hole. The return spring 10 is sleeved on the buckle 8. The length of the buckle 8 is greater than the length of the limiting through hole 9.

[0031] The limiting rod 4 is provided with a slot 14 that matches the buckle 8. A second limiting strip 13 is provided axially on the side of the limiting rod 4, and a second limiting groove 15 that matches the second limiting strip 13 is provided in the limiting hole. Both ends of the buckle 8 are provided with rounded heads.

[0032] The polygonal cavity has a polygonal shape with 5 or more sides, preferably a pentagon or hexagon.

[0033] Working principle: During installation, insert the limiting rod 4 into the limiting hole, and install the connecting block 6 with the limiting rod 4 into the installation cavity. Insert it from the polygonal cavity to the cylindrical cavity, and apply a certain force to make the threaded section protrude. Then fix it with the nut 3. The shaft sleeve 5 is connected to the rotating shaft (any existing connection method can be used, which will not be described in detail). This realizes the installation of the rotating device. When disassembly is required, simply unscrew the nut 3 and gently push the limiting rod 4 towards the shaft sleeve 5 to disassemble the rotating device.

[0034] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0035] It should be noted that the above content merely illustrates the technical concept of the present invention and should not be construed as limiting the scope of protection of the present invention. For those skilled in the art, various improvements and modifications can be made without departing from the principle of the present invention, and all such improvements and modifications fall within the scope of protection of the claims of the present invention.

Claims

1. A rotating device for a fan, characterized in that, The device includes a mounting plate (1) and an impeller hub (2) mounted on the mounting plate (1). An installation cavity is axially provided inside the impeller hub (2). The installation cavity includes a polygonal cavity, a frustum cavity, and a cylindrical cavity arranged sequentially from bottom to top. A quick-release structure is provided inside the installation cavity. The quick-release structure includes a limiting polygonal body (16), a frustum-shaped connecting block (6), and a limiting rod (4). The limiting polygonal body (16), the connecting block (6), and the limiting rod (4) are sequentially matched and arranged inside the polygonal cavity, the frustum cavity, and the cylindrical cavity. The bottom end of the connecting block (6) is fixedly provided with a limiting polygonal body (16) and a shaft sleeve (5). The shaft sleeve (5) is connected to the rotating shaft. The connecting block (6) is provided with a limiting hole in the axial direction. A limiting rod (4) is provided in the limiting hole. The limiting rod (4) is connected to the limiting hole through a buckle (8) mechanism. The top of the limiting rod (4) is provided with a threaded section. The top of the limiting rod (4) passes through the upper end of the connecting block (6). A nut (3) is provided on the threaded section. The polygon of the polygonal cavity is the circumscribed polygon of the bottom circle of the frustum cavity.

2. The fan rotation device according to claim 1, characterized in that, The connecting block (6) includes: The first limiting groove is provided on the inclined surface of the connecting block (6) with a plurality of first limiting grooves evenly arranged. The first limiting grooves are on the same plane as the shaft. The first limiting strip (7) is disposed in the first limiting groove, and the upper end of the first limiting strip (7) is hinged to the upper end of the first limiting groove. The buckle (8) mechanism has a limiting through hole (9) arranged radially along the connecting block (6) in the first limiting groove. The diameter of the hole in the middle (11) of the limiting through hole is larger than the diameter of the holes at both ends. A capsule-shaped buckle (8) is arranged in the limiting through hole (9). A limiting ring (12) is arranged on the capsule-shaped buckle (8). The limiting ring (12) is placed in the middle of the limiting hole. A reset spring (10) is arranged between the right end of the limiting ring (12) and the middle (11) of the limiting through hole. The reset spring (10) is sleeved on the buckle (8). The length of the buckle (8) is greater than the length of the limiting through hole (9).

3. The fan rotation device according to claim 2, characterized in that, The limiting rod (4) is provided with a slot (14) that matches the buckle (8).

4. The fan rotation device according to claim 1, characterized in that, The side of the limiting rod (4) is provided with a second limiting strip (13) and the limiting hole is provided with a second limiting groove (15) that matches the second limiting strip (13).

5. The fan rotation device according to claim 2, characterized in that, The buckle (8) has rounded ends at both ends.

6. The fan rotation device according to claim 1, characterized in that, The polygonal cavity has a polygonal number of sides greater than or equal to 5.

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