CN219062230U

CN219062230U - Shaft sleeve

Info

Publication number: CN219062230U
Application number: CN202222156139.8U
Authority: CN
Inventors: 刘彦; 赵振东
Original assignee: Qingdao Zhongyi Machinery Equipment Co ltd
Current assignee: Qingdao Zhongyi Machinery Equipment Co ltd
Priority date: 2022-08-17
Filing date: 2022-08-17
Publication date: 2023-05-23
Anticipated expiration: 2032-08-17

Abstract

The utility model provides a shaft sleeve, wherein a shaft sleeve body is sleeved outside a grinding roller shaft, and the inner wall of the shaft sleeve body is in adhesive connection with the outer wall of the grinding roller shaft; the outer part of the grinding roll shaft below the shaft sleeve body and the outer part of the shaft sleeve body are sleeved with a ring-shaped lower gland together, a first framework oil seal is arranged in the lower gland, and the inner ring of the first framework oil seal is contacted with the shaft sleeve body; an annular check ring is arranged below the first framework oil seal and sleeved outside the shaft sleeve; the outer interference fit of the grinding roll shaft below the shaft sleeve body is sleeved with the shaft sleeve, the shaft sleeve is provided with the shaft sleeve nut and the gasket, the shaft sleeve nut presses the fixed gasket, the wear resistance is good, the strength is improved, the shock resistance is good, the service life is prolonged, the grinding roll shaft can be molded once, the processing is convenient, and the cost is reduced.

Description

Shaft sleeve

Technical Field

The utility model provides a shaft sleeve, and belongs to the technical field of mechanical equipment.

Background

The shaft sleeve of the grinding roller assembly of the Raymond mill commonly used at present is mostly formed by machining a circular tube through a lathe. Through long-time use, this kind of axle sleeve of prior art is worn and torn by the oil blanket easily, and the slot appears on axle sleeve surface after wearing and tearing, then the oil blanket loses sealed effect for dust gets into inside the grinding roller assembly, leads to the unable use of grinding roller assembly, thereby increases cost of maintenance and use cost.

Disclosure of Invention

In order to solve at least one technical problem existing in the prior art, the utility model aims to provide the shaft sleeve which has the advantages of good wear resistance, high strength, good shock resistance and long service life.

In order to achieve the above object, the present utility model is realized by the following technical scheme:

the shaft sleeve comprises a cylindrical shaft sleeve body, wherein the shaft sleeve body is sleeved outside the grinding roller shaft, and the inner wall of the shaft sleeve body is in adhesive connection with the outer wall of the grinding roller shaft; the outer part of the grinding roll shaft below the shaft sleeve body and the outer part of the shaft sleeve body are sleeved with a ring-shaped lower gland together, a first framework oil seal is arranged in the lower gland, and the inner ring of the first framework oil seal is contacted with the shaft sleeve body; an annular check ring is arranged below the first framework oil seal and sleeved outside the shaft sleeve; the outer interference fit of the grinding roll shaft below the shaft sleeve body is sleeved with a shaft sleeve, a shaft sleeve nut and a gasket are arranged on the shaft sleeve, and the shaft sleeve nut presses the fixed gasket.

Preferably, a second framework oil seal is also arranged in the lower gland.

The shaft sleeve has at least the following beneficial effects:

the shaft sleeve has the advantages of good wear resistance, improved strength, good shock resistance, prolonged service life, one-step molding, convenient processing and reduced cost.

Drawings

Other features, objects and advantages of the present utility model will become more apparent upon reading of the detailed description of non-limiting embodiments, given with reference to the accompanying drawings in which:

fig. 1 is a schematic structural view of a shaft sleeve according to an embodiment of the present utility model.

In the figure: 1 is a grinding roller shaft, 2 is a first framework oil seal, 3 is a retainer ring, 4 is a shaft sleeve, 5 is a shaft sleeve nut, 6 is a gasket, 7 is a second framework oil seal, 8 is a shaft sleeve body, 9 is a lower gland, 10 is a bearing, and 11 is a shell.

Detailed Description

The utility model is further described in connection with the following detailed description, in order to make the technical means, the creation characteristics, the achievement of the purpose and the effect of the utility model easy to understand.

Examples

As shown in fig. 1, the shaft sleeve comprises a cylindrical shaft sleeve body 8, wherein the shaft sleeve body 8 is sleeved outside the grinding roller shaft 1, and the inner wall of the shaft sleeve body 8 is in adhesive connection with the outer wall of the grinding roller shaft 1; an annular lower gland 9 is sleeved and connected outside the grinding roll shaft 1 below the shaft sleeve body 8 and outside the shaft sleeve body 8, a first framework oil seal 2 is arranged in the lower gland 9, and the inner ring of the first framework oil seal 2 is in contact with the shaft sleeve body 8; an annular check ring 3 is arranged below the first framework oil seal 2, and the check ring 3 is sleeved outside the shaft sleeve body 8; the grinding roll shaft 1 below the shaft sleeve body 8 is sleeved with a shaft sleeve 4 in an interference fit manner, a shaft sleeve nut 5 and a gasket 6 are arranged on the shaft sleeve 4, and the shaft sleeve nut 5 presses the fixed gasket 6.

The inner wall of the shaft sleeve body 8 of the shaft sleeve can be firmly connected with the outer wall of the grinding roller shaft 1 through an adhesive, so that the connection firmness and the tightness are improved. The first framework oil seal 2 is matched with the shaft sleeve body 8, so that the effect of sealing lubricating oil to prevent dust from entering is achieved. A retainer ring 3 is arranged below the first framework oil seal 2 to prevent the first framework oil seal 2 from falling. The shaft sleeve 4 can be arranged below the shaft sleeve body 8 through shrink fit with the grinding roll shaft 1, and the shaft sleeve nut 5 compresses the gasket 6. When the grinding roll shaft 1 rotates, the shaft sleeve body 8, the shaft sleeve nut 5 and the shaft sleeve 4 are driven to rotate, and the gasket 6 plays a role in wear resistance and sealing. The shaft sleeve body 8 can adopt a ceramic shaft sleeve body obtained by firing, so that the performances of wear resistance, strength, impact resistance and the like are further improved, and the one-step forming is more convenient, and the processing and the manufacturing are convenient. The gasket 6 may be a polytetrafluoroethylene gasket.

The lower gland 9 can be internally provided with a second framework oil seal 7. The inner ring of the second framework oil seal 7 is contacted with the shaft sleeve body 8. The first frame oil seal 2 is preferably uniformly distributed with the second frame oil seal 7. The inner circle of first skeleton oil blanket 2 and second skeleton oil blanket 7 mutually support with axle sleeve body 8 jointly, and first skeleton oil blanket 2 sets up in second skeleton oil blanket 7 top, and retaining ring 3 are installed in first skeleton oil blanket 2 below, second skeleton oil blanket 7 top, further improves sealed lubricating oil and prevents the effect that the dust got into.

A cylindrical housing 11 can be arranged outside the lower gland 9 and outside the grinding roll shaft 1. The grinding roll shaft 1 is mounted in a housing 11 by means of bearings 10. The outer shell 11 is sleeved outside the upper part of the lower gland 9. The outer shell 11 is fixedly connected with the lower gland 9. The housing 11 is fixedly connected with the lower gland 9 by at least three uniformly distributed bolts.

While the fundamental and principal features of the utility model and advantages of the utility model have been shown and described, it will be apparent to those skilled in the art that the utility model is not limited to the details of the foregoing exemplary embodiments, but may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive, the scope of the utility model being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Furthermore, it should be understood that although the present disclosure describes embodiments, not every embodiment is provided with a separate embodiment, and that this description is provided for clarity only, and that the disclosure is not limited to the embodiments described in detail below, and that the embodiments described in the examples may be combined as appropriate to form other embodiments that will be apparent to those skilled in the art.

Claims

1. The shaft sleeve comprises a cylindrical shaft sleeve body which is sleeved outside the grinding roller shaft, and is characterized in that the inner wall of the shaft sleeve body is in adhesive connection with the outer wall of the grinding roller shaft; an annular lower gland is sleeved outside the grinding roller shaft below the shaft sleeve body and outside the shaft sleeve body, a first framework oil seal is arranged in the lower gland, and the inner ring of the first framework oil seal is in contact with the shaft sleeve body; an annular check ring is arranged below the first framework oil seal, and the check ring is sleeved outside the shaft sleeve; the grinding roller is characterized in that a shaft sleeve is sleeved outside the grinding roller shaft below the shaft sleeve body in an interference fit manner, a shaft sleeve nut and a gasket are installed on the shaft sleeve, and the shaft sleeve nut presses and fixes the gasket.

2. The bushing of claim 1 wherein a second skeletal oil seal is also mounted in the lower gland.

3. The bushing of claim 2 wherein an inner ring of the second skeletal oil seal is in contact with the bushing body.

4. The bushing of claim 2 wherein said first frame oil seal is evenly distributed with said second frame oil seal.

5. The bushing of claim 2 wherein said retainer ring is mounted below said first skeletal oil seal and above said second skeletal oil seal.

6. The bushing of claim 1 wherein said lower gland and said grinding roll shaft are cooperatively sleeved with a cylindrical housing.

7. The bushing of claim 6 wherein said grinding roll shaft is mounted within said housing by bearings.

8. The bushing of claim 6 wherein said outer shell is disposed outwardly of an upper portion of said push-down cover.

9. The bushing of claim 6 wherein said housing is fixedly connected to said lower gland.

10. The bushing of claim 9 wherein said housing and said lower gland are fixedly connected by at least three uniformly distributed bolts.