Rotary assembly and belt conveyor using the same

Abstract

The invention discloses a rotating assembly, comprising: a rotatable central shaft; a housing connected to the central shaft, the housing having a cavity; and a sealing air bag accommodated in the housing. In the cavity, wherein the sealed air bag communicates with the outside atmosphere through a gas passage, so that the pressure in the cavity is kept substantially equal to the atmospheric pressure. Through this structure, the volume of the cavity of the casing can be changed, so that the pressure inside the cavity is approximately the same as the atmospheric pressure, and is not affected by changes in air temperature. Due to the balance of the internal air pressure, the dust particles in the environment will not enter the interior of the equipment, so the grinding debris will not slip into the bearing, thus prolonging the service life of the equipment.

Description

technical field [0001] The present invention relates to belt conveyors, and more particularly, to a rotating assembly for a belt conveyor. Background technique [0002] As we all know, belt conveyors are often used in production industries such as coal mining, mining or construction. In such production processes, belt conveyors often have to operate in a dusty environment. In order to prevent the dust particles in the dusty environment from wearing the idler rollers of the conveyor, it is known that the idler rollers of the conveyor adopt a sealed cylindrical shell, and a bearing assembly centered on a hollow rotating shaft is provided, and an external seal is provided at the same time. This external seal provides a final barrier to dust particles such as fine coal, waste rock, parts of building material debris, etc. [0003] In Russian patent RU2278069C1 published on June 20, 2006, in order to protect the bearing assembly, the seal is in the form of an elastically bendabl...

AI Technical Summary

Problems solved by technology

[0006] However, currently in these above mentioned devices, there is no complete protection against particulate wear of the internal components of the idler, such as the bearings

When the atmospheric pressure of the external environment changes, the pressure of the inner cavity of the idler changes (such as the pressure difference between the inside and outside of the idler cavity), and dust particles fall into the inside of the idler, none of the above-mentioned devices can provide effective solutions and countermeasures.

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