A belt conveyor idler roller sealed and lubricated by nano-magnetic liquid

Abstract

The invention discloses a belt conveyor roller sealed and lubricated with nanometer magnetic liquid. Each of two ends of a roller carrier shaft is provided with a bearing block, and each bearing blockis axially provided with an internal magnetic liquid sealing part, a bearing, an external magnetic liquid sealing part, an external sealing ring, an internal sealing ring, an end cover and an elasticretaining ring which are sequentially arranged from inside to outside therein; each of a third pole shoe, a second permanent magnet, a fourth pole shoe and a second pole shoe is provided with an injection port in the axial direction, each of the radial direction and the axial direction of the first permanent magnet is provided with one injection port, the radial injection port is communicated with the axial injection port, and the axial sealing cavity formed by the internal magnetic liquid sealing part and the external magnetic liquid sealing part is filled with nanometer magnetic liquid. Thebelt conveyor roller is of non-contact seal with zero leakage and can bear high speed rotation, reliable sealing is achieved, and the problem of poor sealing effect of ordinary labyrinth seal at lowtemperature or low speed is solved; the bearing is lubricated by the magnetic liquid, the magnetic liquid is restrained in the lubricating part by the magnetic field without leakage, and excellent lubricating performance is achieved; liquid sealing and nanometer lubrication is adopted, running resistance of the roller is reduced greatly, and service life is prolonged; on-site mounting and supplementing of the magnetic liquid in use are facilitated by the arrangement of the injection holes.

Description

technical field [0001] The invention relates to a belt conveyor idler roller sealed and lubricated by a nano-magnetic liquid, belonging to the technical field of belt conveyors. Background technique [0002] Belt conveyor is the most ideal high-efficiency continuous transportation equipment for bulk and granular materials, and is widely used in coal, electric power, ports, metallurgy, food and other industries. The idler roller is an important part of the belt conveyor, which accounts for 20% of the total mass of the conveyor and more than 25%-30% of the total cost. The performance of the idler roller directly affects the operating efficiency and transportation cost of the belt conveyor. The working environment of the idler is generally harsh. The main problem in the use process is that the rotation is not flexible, and in severe cases, it may even fail to operate, resulting in increased running resistance of the conveyor belt, reduced conveying efficiency, and increased tr...

AI Technical Summary

Problems solved by technology

[0006] Aiming at the problems existing in the current roller sealing and lubrication technology, the present invention provides a nano-magnetic liquid sealed and lubricated belt conveyor roller, which can solve the problem of poor sealing performance of traditional labyrinth seals under low temperature or low speed conditions. At the same time, the nano-magnetic liquid is used to lubricate the bearings, which will not cause leakage and pollute the environment under the constraints of the magnetic field.

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