Guide mechanism of labyrinth compressor piston

Abstract

The invention discloses a guide mechanism of a labyrinth compressor piston. The guide mechanism comprises an air cylinder sleeve arranged on the inner wall of an air cylinder body in a sleeving manner, and a piston end cover arranged on the labyrinth compressor piston; at least three pairs of semispherical grooves are evenly distributed in the position opposite to the end face of the connecting position of the labyrinth compressor piston and the piston end cover in the circumferential direction, and a spherical ceramic ball is placed in a spherical groove formed by each pair of semispherical grooves; the spherical ceramic balls can roll in the spherical grooves, and meanwhile it is ensured that the spherical ceramic balls are in point contact with the inner wall of the air cylinder sleeve; and the labyrinth compressor piston is in non-contact type labyrinth seal with the inner wall of the air cylinder sleeve. Under the joint effect of the point contact of the spherical ceramic balls and the air cylinder sleeve and the face contact of a cross head and a cross head sliding way, precise centering of the labyrinth compressor piston is achieved. The ceramic balls are adopted by the guide mechanism to serve as key guide elements of the piston, lubricating is not needed, a guide bearing does not need to be arranged, a labyrinth compressor is more compact in structure, and the linearity of piston running can be improved.

Description

technical field [0001] The invention belongs to the field of labyrinth compressors, and in particular relates to a guide mechanism for a piston of a labyrinth compressor. Background technique [0002] Labyrinth compressor refers to a reciprocating piston compressor with non-contact labyrinth seals between the piston and the inner wall of the cylinder, piston rod and packing. Since there are no friction parts such as piston rings and packing seal rings, dust and abrasive debris will not be generated, oil-free cylinders can be realized, the purity of the compressed medium is guaranteed, and it is not sensitive to impurity particles mixed in the compressed medium. Therefore, it is widely used Used in petroleum, chemical industry, military, metallurgy and other fields. [0003] Since there is no contact between the piston and the cylinder wall of the labyrinth compressor, it is necessary to design a guide mechanism to ensure that the piston always reciprocates along the cylinde...

AI Technical Summary

Problems solved by technology

Restricted by the structure of the labyrinth compressor, the distance between the guide bearing and the crosshead slide is relatively short, while the distance between the guide bearing and the piston is relatively long. , the design gap between the piston and the cylinder should not be too small, the enlarged gap will greatly affect the efficiency of the labyrinth compressor

Images