Axial laminated contact/noncontact combined sealing tape type conveyer plastic carrier roller

Abstract

The invention discloses an axial laminated contact / noncontact combined sealing tape type conveyer plastic carrier roller. The conveyer plastic carrier roller comprises a carrier roller shaft (8), a polyvinyl chloride (PVC) roller body (1) supported and sleeved on a bearing seat (2) through the bearing seat (2) and a bearing (7) arranged at two ends of the shaft, and an axial laminated contact / noncontact combined seal sealed in an annular cavity between the bearing seat (2) and the carrier roller shaft (8) through an end cover (4). The conveyer plastic carrier roller is characterized in that: the axial laminated contact / noncontact combined seal consists of a lamination seat (3) with a hollow columnar structure and an axial combined lamination assembly (6) arranged in a sealed groove machined in the inner wall or the outer wall of the lamination seat; the lamination seat (3) is combined with the carrier roller shaft (8) or the bearing seat (2) in an interference fit mode, and the radialclearance between the lamination seat (3) and the bearing seat (2) or the carrier roller shaft (8) is 0.1 to 1 millimeter; and the clearance between the width of the sealed groove of the lamination seat (3) and the total length of the axial combined lamination assembly (6) is 0.1 to 1 millimeter.

Description

technical field [0001] The invention relates to a manufacturing technology and a sealing structure of a rotating mechanism, in particular to a plastic idler roller of an axial laminated contact / non-contact combined sealing belt conveyor. technical background [0002] Idler rollers are widely used in open-air, dusty, and highly corrosive harsh environments, such as chemical industry, metallurgical industry, cement industry, mining industry, coking industry, port loading and unloading industry, etc., while the existing belt conveyor idler rollers have The body is generally a metal or plastic pipe body, and the two ends use a labyrinth structure to prevent the erosion of harmful substances such as stolen goods, dust, and water. However, no matter which kind of labyrinth structure can effectively prevent slag, dust and muddy water from entering the inside of the idler, which will affect the normal operation of the idler and lead to early failure of the idler (the life of the idl...

AI Technical Summary

Problems solved by technology

Although this method can meet the requirements to a certain extent through special equipment and tooling, the problems of increased production process, increased production cost and increased risk of quality management need to be overcome

[0005] Although the injection-molded plastic pipe can meet the requirements of the concentricity of the bearings at both ends and the radial runout of the outer circle, the production efficiency is significantly lower than that of extrusion molding, and the injection-molded pipe is easily affected by the molding process, ambient temperature, cooling rate, and workers. Influenced by factors such as technical level, it is easy to deform after leaving the mold, and its residual stress will also have an adverse effect on the entire use of the product

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