Chain used for high-dust environment

Abstract

The invention discloses a metal seal ring used for high-dust environment, including an inner ring and an outer ring. A shaft hole is arranged at the central part of the inner ring, inner ring guide plates extending outwards are arranged on the inner ring along the shaft hole; outer ring guide plates extending inwards are arranged on the outer ring along the outer periphery of the outer ring; the outer ring and the inner ring are connected together in a plugging manner and gaps are left therebetween; the inner ring guide plate and the outer ring guide plates are arranged in an staggered manner to form tortuous channels and viscous grease are disposed in the channels; and an dust inlet is disposed on at least one end of the inner ring guide plate or the outer ring guide plate. A labyrinth structure is adopted by the metal seal ring in the integral bearing of the whole chain of the invention, so tortuous channels are formed and the channel is filled with viscous grease, the dust sealing effect is good, and wear resistance is good. The price of the metal seal ring which is just about 20 yuan / each, is only 1/10 that of a foreign product, so the metal seal ring has a significant cost advantage, and the service life of the metal seal ring can be 10 years.

Description

technical field [0001] The invention relates to a chain, in particular to a chain used in a high-temperature dust environment. Background technique [0002] For large-scale conveyor chains used in high-dust environments such as coal mines in China, the traditional process uses rollers without bearings. In a high-dust environment, the roller wears faster due to dust, and makes a lot of noise due to lack of oil friction, which cannot meet the customer's on-site use requirements. [0003] However, when the rollers with bearings are used, when the chain runs in a high-dust environment, dust often enters the interior of the integral bearing in the side gap between the inner and outer rings of the integral bearing, causing the internal bearing to be stuck; therefore, a sealing ring is often installed in the bearing. Traditional The material of the sealing ring at the bearing is rubber or asbestos, which has a simple structure, poor sealing effect, and is not wear-resistant, so th...

AI Technical Summary

Problems solved by technology

In a high-dust environment, the roller wears faster due to dust, and makes a lot of noise due to lack of oil friction, which cannot meet the customer's on-site use requirements

[0003] However, when the rollers with bearings are used, when the chain runs in a high-dust environment, dust often enters the interior of the integral bearing in the side gap between the inner and outer rings of the integral bearing, causing the internal bearing to be stuck; therefore, a sealing ring is often installed in the bearin

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