CN203419506U

CN203419506U - Labyrinth seal structure for coal mine carrier roller

Info

Publication number: CN203419506U
Application number: CN201320411877.0U
Authority: CN
Inventors: 郑锦邦
Original assignee: HANGZHOU JINCHENG INDUSTRY Co Ltd
Current assignee: HANGZHOU JINCHENG INDUSTRY Co Ltd
Priority date: 2013-07-10
Filing date: 2013-07-10
Publication date: 2014-02-05
Anticipated expiration: 2023-07-10

Abstract

The utility model discloses a labyrinth seal structure for a coal mine carrier roller. The coal mine carrier roller comprises a carrier roller body, a carrier roller shaft and a carrier roller bearing. The carrier roller body is cylindrical. The carrier roller bearing comprises a bearing inner ring and a bearing outer ring, wherein the bearing inner ring and the bearing outer ring can rotate relatively. The carrier roller shaft is fixedly sleeved with the bearing inner ring. The labyrinth seal structure is composed of an annular first plastic piece and an annular second plastic piece, the first plastic piece is fixed between the bearing outer ring and the inner wall of the carrier roller body in a seal mode, and is located on the axial outer side of the carrier roller bearing, the second plastic piece fixedly sleeves the carrier roller shaft in a seal mode and is located on the axial outer side of the first plastic piece, the first plastic piece and the second plastic piece can rotate relatively, and labyrinth gaps are formed between the first plastic piece and the second plastic piece and filled with grease. According to the labyrinth seal structure for the coal mine carrier roller, the coal mine carrier roller can be prolonged.

Description

Labyrinth seal structure for coal mine carrier roller

Technical field

The utility model relates to a kind of labyrinth seal structure for coal mine carrier roller.

Background technology

The plastic conveyer roller of carrying for colliery, generally comprises columnar carrying roller body, is positioned at the Idler bearing of carrying roller body and is located in the roller carrier shaft of Idler bearing, and roller carrier shaft is fixedly installed on the pedestal of colliery feedway.During work, roller carrier shaft maintains static, and under the drive of coal mine conveying belt, carrying roller body rotates around roller carrier shaft.

Yet the coal mine carrier roller of this conventional confguration exists following problem: coal dust and waste water are easy to enter the Idler bearing between carrying roller body and roller carrier shaft, and corrode or block Idler bearing, and then affecting the transportation work in colliery.In addition, because Idler bearing self also exists some gaps, and it is inner to make coal dust and waste water also can enter by the gap on Idler bearing carrying roller body.Due to above-mentioned two reasons, greatly reduce the service life of coal mine carrier roller.

Utility model content

The utility model object is: for the problems referred to above, provide a kind of labyrinth seal structure for coal mine carrier roller, effectively to avoid coal dust and waste water to enter Idler bearing or carrying roller body inside, the service life of improving coal mine carrier roller.

The technical solution of the utility model is: a kind of labyrinth seal structure for coal mine carrier roller, described coal mine carrier roller comprises carrying roller body, roller carrier shaft and Idler bearing, carrying roller body is cylindrical shape, Idler bearing comprises relatively turnable bearing inner ring and outside race, described bearing inner ring fixed cover is located at outside described roller carrier shaft, described labyrinth seal structure consists of the first Plastic Parts of annular arrangement and the second Plastic Parts of annular arrangement, the first Plastic Parts sealing is fixed between described outside race and the inwall of carrying roller body and is positioned at the axial outside of Idler bearing, the second Plastic Parts sealing fixed cover is located on described roller carrier shaft and is positioned at the axial outside of the first Plastic Parts, between described the first Plastic Parts and the second Plastic Parts, can relatively rotate and the two between be formed with labyrinth clearance, in this labyrinth clearance, be filled with butter.

The utility model has the advantages that: this labyrinth seal structure of the present utility model, because the first Plastic Parts sealing is fixed on the axial outside that is positioned at Idler bearing between outside race and the inwall of carrying roller body, coal dust and waste water just can not see through the first Plastic Parts and enter Idler bearing so, can not between outside race and carrying roller body inwall, enter carrying roller inside, because the second Plastic Parts seals the axial outside that fixed cover is located on roller carrier shaft and is positioned at the first Plastic Parts, coal dust and waste water can not enter Idler bearing between the second Plastic Parts and roller carrier shaft again, in such event, coal dust and waste water are just only remaining, and a unique passage---the gap between the first Plastic Parts and the second Plastic Parts has entered Idler bearing, yet, in the present embodiment, gap between the first Plastic Parts and the second Plastic Parts is gap, labyrinth, and in sealing gap, be filled with the butter that leak tightness is fabulous, when coal mine carrier roller is worked, the first Plastic Parts is fixed on roller carrier shaft motionless, the second Plastic Parts rotates with carrying roller body, also between the first Plastic Parts and the second Plastic Parts, produce relative rotation, because the shape in gap, labyrinth is as labyrinth, the butter of filling within it just can stably be in gap, labyrinth and be difficult to overflow, thereby guaranteed the leak tightness between the first Plastic Parts and the second Plastic Parts, make coal dust and waste water be difficult to enter Idler bearing and carrying roller body inside, greatly increased the service life of coal mine carrier roller.

Accompanying drawing explanation

Below in conjunction with the drawings and specific embodiments, the utility model is described further:

Fig. 1 is the structural representation of the utility model embodiment;

Wherein: 1-the first Plastic Parts, 2-the second Plastic Parts, 3-butter.

The specific embodiment

Fig. 1 has shown a specific embodiment of this labyrinth seal structure for coal mine carrier roller of the utility model, described coal mine carrier roller (not shown in FIG.) comprises carrying roller body, roller carrier shaft and Idler bearing, carrying roller body is cylindrical shape, Idler bearing comprises relatively turnable bearing inner ring and outside race, and described bearing inner ring fixed cover is located at outside described roller carrier shaft.This labyrinth seal structure of the present embodiment consists of the first Plastic Parts 1 of annular arrangement and the second Plastic Parts 2 of annular arrangement.The first Plastic Parts 1 sealing is fixed between described outside race and the inwall of carrying roller body, and the first Plastic Parts 1 is positioned at the axial outside of described Idler bearing.The second Plastic Parts 2 sealing fixed covers are located on described roller carrier shaft, and the second Plastic Parts 2 is positioned at the axial outside of the first Plastic Parts 1.Between described the first Plastic Parts 1 and the second Plastic Parts 2, can relatively rotate and the two between be formed with labyrinth clearance, in this labyrinth clearance, be filled with butter 3, thereby the labyrinth clearance between the first Plastic Parts 1 and the second Plastic Parts 2 sealed up.

Because the first Plastic Parts 1 sealing is fixed on the axial outside that is positioned at described Idler bearing between outside race and the inwall of carrying roller body, coal dust and waste water just can not see through the first Plastic Parts 1 and enter Idler bearing so, can not between outside race and carrying roller body inwall, enter carrying roller inside, because the second Plastic Parts 2 seals the axial outside that fixed covers are located on roller carrier shaft and are positioned at the first Plastic Parts 1, coal dust and waste water can not enter Idler bearing between the second Plastic Parts 2 and roller carrier shaft again, in such event, coal dust and waste water are just only remaining, and a unique passage---the gap between the first Plastic Parts 1 and the second Plastic Parts 2 has entered Idler bearing, yet, in the present embodiment, gap between the first Plastic Parts 1 and the second Plastic Parts 2 is gap, labyrinth, and in sealing gap, be filled with the butter 3 that leak tightness is fabulous, when coal mine carrier roller is worked, the first Plastic Parts 1 is fixed on roller carrier shaft motionless, the second Plastic Parts 2 rotates (the second Plastic Parts with carrying roller body, carrying roller body, and the outside race three of Idler bearing synchronously rotates), also between the first Plastic Parts 1 and the second Plastic Parts 2, produce relative rotation (bearing inner ring and the outside race of Idler bearing also relatively rotate), because the shape in gap, labyrinth is as labyrinth, the butter 3 of filling within it just can stably be in gap, labyrinth and be difficult to overflow, thereby guaranteed the leak tightness between the first Plastic Parts 1 and the second Plastic Parts 2, make coal dust and waste water be difficult to enter Idler bearing and carrying roller body inside, greatly increased the service life of coal mine carrier roller.

Certainly, above-described embodiment is only explanation technical conceive of the present utility model and feature, and its object is to allow people can understand content of the present utility model and implement according to this, can not limit protection domain of the present utility model with this.All equivalent transformations of doing according to the Spirit Essence of the utility model main technical schemes or modification, within all should being encompassed in protection domain of the present utility model.

Claims

1. the labyrinth seal structure for coal mine carrier roller, described coal mine carrier roller comprises carrying roller body, roller carrier shaft and Idler bearing, carrying roller body is cylindrical shape, Idler bearing comprises relatively turnable bearing inner ring and outside race, described bearing inner ring fixed cover is located at outside described roller carrier shaft, it is characterized in that: described labyrinth seal structure consists of first Plastic Parts (1) of annular arrangement and second Plastic Parts (2) of annular arrangement, the first Plastic Parts (1) sealing is fixed between described outside race and the inwall of carrying roller body and is positioned at the axial outside of Idler bearing, the second Plastic Parts (2) sealing fixed cover is located on described roller carrier shaft and is positioned at the axial outside of the first Plastic Parts (1), between described the first Plastic Parts (1) and the second Plastic Parts (2), can relatively rotate and the two between be formed with labyrinth clearance, in this labyrinth clearance, be filled with butter (3).