Conical bushing connecting structure of fan impeller
By introducing limit blocks, limit slots, bolts and rubber layers into the fan impeller tapered bushing connection structure, the problems of loosening and disassembly inconvenient bushing and inability to disassemble the bushing and shaft are solved, and the solid connection and easy maintenance of the impeller are achieved. design.
Patent Information
- Application Number
- CN202420159805.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-01-23
- Publication Date
- 2024-12-17
- Estimated Expiration
- 2034-01-23
AI Technical Summary
The existing fan impeller tapered bushing connection structure is prone to loosening during rotation, and due to the integrated design, it is not convenient to disassemble and replace the bushing.
A structure including a shaft, limit plate, limit block, fixed rod, bushing, impeller, limit slot, fixed tube, bolt, fixed block, gasket and rubber layer is designed, through limit block and limit The engagement of the groove, the screw tightening of the bolts, and the attachment of the spacer and rubber layer enables a stable connection between the impeller, bushing and shaft, and supports rapid disassembly.
It effectively prevents loosening of the bushing and shaft, simplifies the disassembly and replacement of the bushing, and ensures the stability and service life of the impeller.
Smart Images
Figure CN222185236U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of fan impellers, in particular to a conical bushing connection structure of a fan impeller. Background Art
[0002] The fan is mainly composed of a wind casing, an impeller, and a motor; the centrifugal fan is mainly composed of a volute, an impeller, an air inlet (deflector), a motor, a transmission group, and an angle frame. The accessories include shock absorbers, pulleys, belts, outlet flanges, belt guards, etc. The fan impeller is a key component of the fan. During the use of the fan, it is necessary to add a conical bushing on one side directly between the shaft and the impeller to ensure the stability of the impeller, prevent wear between the shaft and the impeller, and extend the service life of the impeller.
[0003] The existing fan impeller conical bushing connection structure only has a longitudinal groove to fix the bushing and the impeller, and lacks a mirror positioning groove to fix the bushing and the shaft together. After a long period of rotation, it may become loose; the existing fan impeller conical bushing connection structure is all integrated interference connection, which is not convenient for disassembling and replacing the bushing. Therefore, in order to solve the above problems, a fan impeller conical bushing connection structure is proposed. Utility Model Content
[0004] The utility model aims to provide a conical bushing connection structure of a fan impeller to solve the problems raised in the above-mentioned background technology.
[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:
[0006] A conical bushing connection structure for a fan impeller comprises a shaft, the outer side of the shaft is fixedly connected to a limiting plate, one end of the shaft is fixedly connected to a limiting block, a fixing rod is fixedly connected to the center position of one end of the shaft, the outer side of the fixing rod is snap-connected with a bushing, the outer side of the bushing is provided with a limiting strip, the outer side of the bushing is slidably connected to an impeller, the inner side of the impeller is provided with a second limiting groove, the end of the bushing close to the shaft is provided with a first limiting groove, the end of the fixing rod away from the shaft is fixedly connected to a fixing tube, the inner side of the fixing tube is spirally connected with a bolt, one side of the bolt is fixedly connected to a fixing block, the outer side of the fixing tube is slidably connected with a gasket and a rubber layer in sequence from left to right, and the outer side of the impeller is fixedly connected to a fan blade.
[0007] Preferably, the inner side of the first limiting groove is snap-connected with a limiting block.
[0008] Preferably, the inner side of the second limiting groove is snap-connected with a limiting strip.
[0009] Preferably, the gasket and the rubber layer are in the shape of a ring.
[0010] Preferably, the limiting plate is in the shape of a circular ring.
[0011] Compared with the prior art, the beneficial effects of the utility model are:
[0012] 1. In the utility model, by setting the limit block, bushing and first limit groove and other components, the limit block and the first limit groove are aligned, and then the fixing rod is inserted into the bushing until the limit block and the first limit groove are completely engaged, thereby solving the problem that the existing fan impeller conical bushing connection structure has only longitudinal grooves to fix the bushing and the impeller, lacks mirror positioning grooves, and fixes the bushing and the shaft together, which may become loose after a long rotation time;
[0013] 2. In the utility model, the impeller, bushing, fixing rod and shaft are fixed together by screwing the bolts and the fixing pipe by means of the fixed pipe, bolts and fixing blocks. The later disassembly can be completed by simply unscrewing the bolts, thereby solving the problem that the existing fan impeller conical bushing connection structure is all integrated interference connection, which is not convenient for disassembling and replacing the bushing;
[0014] 3. In the utility model, by providing structures such as gaskets, fixing blocks and rubber pads, the fixing blocks are pushed to fit the gaskets and rubber pads tightly against the impeller by tightening the bolts, which can effectively prevent the bolts from being loosened due to not being tightened, and can also prevent friction between the gasket and the impeller, causing scratches on the impeller surface. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] Figure 1 It is a schematic diagram of the overall structure of the utility model;
[0016] Figure 2 It is a side view structural schematic diagram of this utility model.
[0017] In the figure: 1, shaft; 2, limit plate; 3, limit block; 4, fixing rod; 5, bushing; 6, first limit groove; 7, limit strip; 8, impeller; 9, second limit groove; 10, fixing pipe; 11, bolt; 12, fixing block; 13, gasket; 14, rubber layer; 15, fan blade. DETAILED DESCRIPTION
[0018] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0019] In the description of the present invention, it is necessary to understand that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the drawings. They are only for the convenience of describing the present invention and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the devices or elements referred to must have a specific direction or be constructed and operated in a specific direction. Therefore, they cannot be understood as limiting the scope of protection of the present invention. The directional words "inside and outside" refer to the inside and outside relative to the contours of each component itself.
[0020] In addition, it should be noted that the use of terms such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. If not otherwise stated, the above terms have no special meaning and therefore cannot be understood as limiting the scope of protection of the present invention.
[0021] See also Figure 1-2 , the utility model provides a technical solution:
[0022] A conical bushing connection structure for a fan impeller comprises a shaft 1, a limiting plate 2 is fixedly connected to the outer side of the shaft 1, a limiting block 3 is fixedly connected to one end of the shaft 1, a fixing rod 4 is fixedly connected to the center position of one end of the shaft 1, a bushing 5 is snap-connected to the outer side of the fixing rod 4, a limiting strip 7 is provided on the outer side of the bushing 5, an impeller 8 is slidably connected to the outer side of the bushing 5, a second limiting groove 9 is provided on the inner side of the impeller 8, a first limiting groove 6 is provided on the end of the bushing 5 close to the shaft 1, a fixing tube 10 is fixedly connected to the end of the fixing rod 4 away from the shaft 1, a bolt 11 is spirally connected to the inner side of the fixing tube 10, a fixing block 12 is fixedly connected to one side of the bolt 11, a gasket 13 and a rubber layer 14 are slidably connected to the outer side of the fixing tube 10 in sequence from left to right, and a fan blade 15 is fixedly connected to the outer side of the impeller 8.
[0023] The inner side of the first limiting groove 6 is snap-fitted with the limiting block 3 , the inner side of the second limiting groove 9 is snap-fitted with the limiting strip 7 , the gasket 13 and the rubber layer 14 are in annular shapes, and the limiting plate 2 is in annular shape.
[0024] Working process: when it is necessary to install the tapered bushing 5, first align the limiting strip 7 on the surface of the bushing 5 with the second limiting groove 9 of the impeller 8, then engage the bushing 5 into the impeller 8, and the limiting strip 7 will also engage into the second limiting groove 9 to prevent the bushing 5 from failing to drive the impeller 8 to rotate. Then, place the bushing 5 together with the impeller 8 on the fixing rod 4, and put the bushing 5 on the outside of the fixing rod 4 until the first limiting groove 6 and the limiting block 3 are tightly engaged. The rotation of the shaft 1 drives the bushing 5 to rotate through the limiting block 3 and the first limiting groove 6, and the bushing 5 drives the impeller 8 to rotate through the limiting strip 7 and the second limiting groove 9. Then, put the rubber layer 14 and the gasket 13 on the outside of the fixing tube 10 in turn, and finally fix the impeller 8, the bushing 5 and the shaft 1 by screwing the bolts 11 and the fixing tube 10 to prevent the impeller 8, the bushing 5 and the shaft 1 from falling off.
[0025] The contents not described in detail in this specification belong to the prior art known to the professional and technical personnel in this field. The standard parts used in this utility model can be purchased from the market, and the special-shaped parts can be customized according to the description and the drawings. The specific connection methods of each part adopt the conventional means such as bolts, rivets, welding, etc. in the prior art. The machinery, parts and equipment all adopt the conventional models in the prior art, and the circuit connection adopts the conventional connection method in the prior art, which will not be described in detail here.
[0026] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.
Claims
1. A conical bushing connection structure for a fan impeller, comprising a shaft (1), characterized in that: The outer side of the shaft (1) is fixedly connected to a limit plate (2), one end of the shaft (1) is fixedly connected to a limit block (3), a fixing rod (4) is fixedly connected to the center position of one end of the shaft (1), a bushing (5) is snap-connected to the outer side of the fixing rod (4), a limit strip (7) is provided on the outer side of the bushing (5), an impeller (8) is slidably connected to the outer side of the bushing (5), a second limit groove (9) is provided on the inner side of the impeller (8), a first limit groove (6) is provided on the end of the bushing (5) close to the shaft (1), a fixing tube (10) is fixedly connected to the end of the fixing rod (4) away from the shaft (1), a bolt (11) is spirally connected to the inner side of the fixing tube (10), a fixing block (12) is fixedly connected to one side of the bolt (11), a gasket (13) and a rubber layer (14) are slidably connected to the outer side of the fixing tube (10) from left to right in sequence, and a fan blade (15) is fixedly connected to the outer side of the impeller (8).
2. The conical bushing connection structure of a fan impeller according to claim 1, characterized in that: The inner side of the first limiting groove (6) is snap-connected to the limiting block (3).
3. The conical bushing connection structure of a fan impeller according to claim 1, characterized in that: The inner side of the second limiting groove (9) is snap-connected to the limiting strip (7).
4. The conical bushing connection structure of a fan impeller according to claim 1, characterized in that: The gasket (13) and the rubber layer (14) are in the shape of a ring.
5. The conical bushing connection structure of a fan impeller according to claim 1, characterized in that: The limiting plate (2) is in the shape of a circular ring.