Linear guide device of reciprocating compressor

Abstract

The invention belongs to the technical field of reciprocating compressors, and relates to a linear guide device of a reciprocating compressor, comprising a shell, a cylinder, a crankshaft, a connecting rod, a piston and a sealing ring. The cylinder is connected on the shell; the sealing ring is installed on the piston; the piston is installed in the cylinder; one end of a piston frame rod is connected with the piston; the crankshaft is eccentrically provided with a crank; one end of the connecting rod is sheathed on the crank and rotatably matched with the crank; the other end of the connecting rod is articulated with the piston frame rod; the piston frame rod is provided with a guide rod or a slide block for leading the piston to carry out straight reciprocating motion; and the shell is provided with a guide sleeve or a guide groove matched with the guide rod or the slide block. The invention ensures that the piston of a compressor makes straight reciprocating motion and reduces smacking motion or circulating swing motion of the piston for the cylinder due to the swing of the connecting rod, thereby effectively reducing the noise of the compressor and prolonging the service life of the compressor. The invention is suitable for compressors or pumps such as a hydraulic pump, a water pump, a vacuum pump and a cold air pump.

Description

technical field [0001] The invention belongs to the technical field of reciprocating compressors, in particular to a linear guide device for a reciprocating compressor that guides a compressor piston to perform reciprocating linear motion. Background technique [0002] As we all know, the movement of the connecting rod of the traditional reciprocating compressor is quite complicated. It has both rotary motion and reciprocating motion: on the one hand, the big head of the connecting rod rotates in a circle with the crankshaft, and on the other hand, the small head of the connecting rod reciprocates together with the piston. linear motion. It is precisely because of the above-mentioned movement mode of the connecting rod that the force acting on the piston by the connecting rod is a constantly changing swinging force, which obviously brings some disadvantages: when the connecting rod and the piston are connected through the piston pin (such as The current oil-lubricated recip...

AI Technical Summary

Problems solved by technology

It is precisely because of the above-mentioned movement mode of the connecting rod that the force acting on the piston by the connecting rod is a constantly changing swinging force, which obviously brings some disadvantages: when the connecting rod and the piston are connected through the piston pin (such as The current oil-lubricated reciprocating compressor), it will cause the piston to slap the cylinder when it is working, resulting in greater noise; and when the connecting rod and the piston are integral structures (such as the current oil-free reciprocating compression Machine), it will cause the piston to cyclically swing relative to the cylinder and shorten the life of the seal ring

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