Non-contact symmetrical labyrinth type waterproof-dustproof carrier roller sealing device

Abstract

The invention discloses a non-contact symmetrical labyrinth type waterproof-dustproof carrier roller sealing device. The non-contact symmetrical labyrinth type waterproof-dustproof carrier roller sealing device comprises a center shaft. The center shaft is sleeved with a roller, bearing bases are installed between the two ends of the roller and the center shaft, a bearing is installed in each bearing base, base sealing devices in close fit with the bearing bases are installed in the portions, outside the bearings, of the bearing bases, and shaft sealing devices in close fit with the center shaft are installed on the center shaft; each base sealing device comprises an inner base sealing piece and an outer base sealing piece, each shaft sealing device comprises an inner shaft sealing piece and an outer shaft sealing piece, the outer circumference of each inner shaft sealing piece extends into the portion between the corresponding inner base sealing piece and the corresponding outer base sealing piece and is in clearance fit with the inner base sealing piece and the outer base sealing piece, and the inner circumference of each outer base sealing piece extends into the portion between the corresponding inner shaft sealing piece and the corresponding outer shaft sealing piece and is in clearance fit with the inner shaft sealing piece and the outer shaft sealing piece; each inner base sealing piece, the corresponding inner shaft sealing piece, the corresponding outer base sealing piece and the corresponding outer shaft sealing piece are arranged in a staggered manner, multi-stage sealing is formed, and the sealing effect is good; and all the sealing pieces are in clearance fit, rotation of a carrier roller can not be influenced, and the service life of the carrier roller is prolonged.

Description

technical field [0001] The invention relates to a mechanical transportation part, in particular to a sealing device for idler rollers. Background technique [0002] Belt conveyor is a general-purpose series of products, which can be widely used in various industries such as metallurgy, mining, coal, ports, power stations, building materials, chemicals, light industry, petroleum, etc. It is a product with a large volume and a wide range. The idler is a device used to support the conveyor belt and the materials carried on the conveyor belt to ensure the stable operation of the conveyor belt. It has an irreplaceable role in the equipment, and it is used in a large amount, and it is a vulnerable part. [0003] The quality of the roller directly affects the normal use of the equipment. The quality of the roller seals directly affects the service life of the roller. [0004] The structure of the existing idler seal is generally composed of an inner sealing ring, an outer sealing...

AI Technical Summary

Problems solved by technology

Some consider the sealing effect, but increase the rotation resistance of the roller; some reduce the rotation resistance of the roller, but the sealing effect is not ideal; the existing roller seal has many parts, which brings many problems to production, assembly and maintenance. Inconvenient, but also increased manufacturing costs

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