CN214534103U

CN214534103U - Sealing structure for tensioning wheel bearing of abrasive belt polishing machine

Info

Publication number: CN214534103U
Application number: CN202120637322.2U
Authority: CN
Inventors: 刘三信
Original assignee: Taiyuan Shenhai Machinery Equipment Co ltd
Current assignee: Taiyuan Shenhai Machinery Equipment Co ltd
Priority date: 2021-03-30
Filing date: 2021-03-30
Publication date: 2021-10-29
Anticipated expiration: 2031-03-30

Abstract

The utility model discloses an abrasive band polishing machine tight pulley bearing seal structure that rises, including non-contact labyrinth, non-contact labyrinth is including keeping off lid, V type rubber seal, hole circlip, spacer and sealed lid, the outside of bearing is located to sealed lid, the outside of sealed lid is located to hole circlip, the spacer is located between hole circlip and the sealed lid, V type rubber seal locates the outside of hole circlip, keep off the lid by the axle head stationary and with wheel body non-contact, keep off and be equipped with the seal chamber space between lid and the sealed lid, it is full of lubricating grease to fill in the seal chamber space, V type rubber seal and sealed lid are used for preventing the lubricating grease in the bearing to break away from the bearing under high speed state. The utility model discloses both can prevent that outside region water from getting into in the bearing, can prevent again that the inside lubricating grease of bearing from breaking away from the bearing, reach extension bearing life's purpose.

Description

Sealing structure for tensioning wheel bearing of abrasive belt polishing machine

Technical Field

The utility model relates to a burnishing machine field, more specifically say, in particular to abrasive band polishing machine tight pulley bearing seal structure that rises.

Background

The abrasive belt polishing machine is used for polishing and burnishing, has wide application field, polishes and burnishes a workpiece by the grinding performance of sand grains on an abrasive belt when in use, and has the advantages of high precision, less noise and dust, easy control, good environmental benefit, simple and convenient operation and low cost.

At present, the abrasive belt polishing machine adopts the traditional oil seal, which easily causes the problems of water inlet of the inner bearing of the tension wheel and poor bearing lubrication. Therefore, a sealing structure of a tension wheel bearing of the belt sander needs to be developed.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an abrasive band polishing machine tight pulley bearing seal structure that rises to overcome the defect that prior art exists.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

the utility model provides a belt sander tight pulley bearing seal structure, includes non-contact labyrinth, non-contact labyrinth includes keeps off lid, V type rubber seal, hole circlip, spacer and sealed lid, the outside of bearing is located to the sealed lid, hole circlip locates the outside of sealed lid, the spacer is located between hole circlip and the sealed lid, V type rubber seal locates the outside of hole circlip, keep off the lid by the fixed static and wheel body non-contact of axle head, keep off and be equipped with the seal chamber space between lid and the sealed lid, the seal chamber space is filled with lubricating grease, V type rubber seal and sealed lid are used for preventing the lubricating grease in the bearing to break away from the bearing under high-speed state.

Further, the sealing cover is of a structure with the middle part protruding outwards.

Further, the spacer bush is arranged on the outer side of the edge of the sealing cover.

Compared with the prior art, the utility model has the advantages of: the utility model discloses a non-contact labyrinth seals, when the wheel body is high-speed rotatory, lubricating grease can be in keeping off the clearance formation oil film between lid and the wheel body owing to under the centrifugal force effect, can prevent outside water to enter into in the bearing like this, and V type rubber seal can prevent with sealed lid that the lubricating grease in the bearing breaks away from the bearing under high-speed state, and this kind of structure both can prevent in outside regional water entering bearing, can prevent again that the inside lubricating grease of bearing from breaking away from the bearing, reaches extension bearing life's purpose.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is the structural schematic diagram of the sealing structure of the tension wheel bearing of the belt sander of the utility model.

In the figure: the sealing structure comprises a blocking cover 1, a V-shaped rubber sealing ring 2, a hole elastic retainer ring 3, a spacer 4 and a sealing cover 5.

Detailed Description

The preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings, so that the advantages and features of the present invention can be more easily understood by those skilled in the art, and the scope of the present invention can be more clearly and clearly defined.

Referring to fig. 1, the utility model provides an abrasive band polishing machine tight pulley bearing seal structure that rises, including non-contact labyrinth, non-contact labyrinth including keeping off lid 1, V type rubber seal 2, hole circlip 3, spacer 4 and sealed lid 5, the outside of bearing is located to sealed lid 5, hole circlip 3 locates the outside of sealed lid 5, spacer 4 locates between hole circlip 3 and the sealed lid 5, V type rubber seal 2 locates the outside of hole circlip 3, keep off lid 1 by the fixed static and wheel body non-contact of axle head, keep off and be equipped with the seal chamber space between lid 1 and the sealed lid 5, the seal chamber space intussuseption is full of lubricating grease, V type rubber seal 2 and sealed lid 5 are used for preventing the lubricating grease in the bearing to break away from the bearing under high speed condition.

In this embodiment, the sealing cover 5 has a structure with a middle portion protruding outwards.

In this embodiment, the spacer 4 is disposed outside the edge of the sealing cover 5.

The utility model discloses a theory of operation does: the blocking cover 1 is fixed and static by a shaft end and is not in contact with the wheel body, a certain sealing cavity space is arranged between the blocking cover 1 and the sealing cover 5, lubricating grease is filled in the sealing cavity space, and when the wheel body rotates at a high speed, the lubricating grease can form an oil film in a gap between the blocking cover 1 and the wheel body under the action of centrifugal force, so that external water can be prevented from entering the bearing. The V-shaped rubber sealing ring 2 and the sealing cover 5 can prevent the grease in the bearing from separating from the bearing in a high-speed state. Adopted the utility model discloses a this kind of structure both can prevent that outside region water from getting into in the bearing, can prevent again that the inside lubricating grease of bearing from breaking away from the bearing, reaches improvement bearing life purpose.

Although the embodiments of the present invention have been described with reference to the accompanying drawings, various changes and modifications can be made by the owner within the scope of the appended claims, and the protection scope of the present invention should not be exceeded by the claims.

Claims

1. The utility model provides a belt sander tight pulley bearing seal structure which characterized in that: including non-contact labyrinth seal, non-contact labyrinth seal is including keeping off lid, V type rubber seal, hole circlip, spacer and sealed lid, the outside of bearing is located to sealed lid, the outside of sealed lid is located to hole circlip, the spacer is located between hole circlip and the sealed lid, V type rubber seal locates the outside of hole circlip, keep off the lid by the fixed static and wheel body non-contact of axle head, keep off and be equipped with the seal chamber space between lid and the sealed lid, the seal chamber space intussuseption is full of lubricating grease, V type rubber seal and sealed lid are used for preventing the lubricating grease in the bearing to break away from the bearing under high speed condition.

2. The belt sander tensioner bearing seal structure of claim 1, wherein: the sealing cover is of a structure with the middle part protruding outwards.

3. The belt sander tensioner bearing seal structure of claim 1, wherein: the spacer bush is arranged on the outer side of the edge of the sealing cover.