Piston type compressor

Abstract

The invention discloses a piston type compressor which comprises a rack, wherein an air cylinder is arranged on the rack, a piston is arranged in the air cylinder and comprises a piston body and a piston ring, a piston rod is arranged on the piston, one end of the piston rod extends out of the air cylinder and is connected with a driving mechanism, and the driving mechanism comprises a rotating shaft, a guide rail and a sliding block, a left spiral groove and a right spiral groove are formed in the side body of the rotating shaft, the screw pitch of the left spiral groove is gradually reduced from right to left, and the screw pitch of the right spiral groove is equal to and not smaller than the screw pitch of the rightmost end of the left spiral groove. The rotating shaft is used for replacing a traditional crankshaft, and the piston type compressor has advantages of stability and silence. Due to the variable design of the screw pitch of the spiral groove, the piston is fed in a decelerating manner during working and returns uniformly and quickly during no-load, so that the power supplied to the piston is always matched with the working state of the piston, and the working efficiency is greatly improved; the design of the piston can reduce the friction with the cylinder and ensure the smoothness of an air inlet channel.

Description

technical field [0001] The invention belongs to the technical field of compressors, in particular to a piston compressor. Background technique [0002] At present, gas compressors are generally implemented in two forms. One is an elastic valve, which uses a magnetic element to drive the elastic valve to expand and contract to achieve gas compression. The problem with this structure is that the driving force of the elastic valve is small, so the The pressure of the compressed gas generated is relatively small, and it is generally used in oxygen supply systems such as aquariums. The other is to use a piston to realize gas compression by moving the piston in the cylinder. This structure is widely used in various occasions with high air pressure. At present, the driving of the piston type gas compressor is generally to use a motor, and the motor drives the piston through the crankshaft to move back and forth. Piston-type gas compressors have the following problems: the speed o...

AI Technical Summary

Problems solved by technology

[0002] At present, gas compressors are generally implemented in two forms. One is an elastic valve, which uses a magnetic element to drive the elastic valve to expand and contract to achieve gas compression. The problem with this structure is that the driving force of the elastic valve is small, so the The pressure of the compressed gas generated is relatively small, and it is generally used in oxygen supply systems such as aquariums

Piston-type gas compressors have the following problems: the speed of the piston in the compression stroke and the suction stroke is the same and uniform, which makes the efficiency of the whole device low; loud noise

In addition, the structure of the piston is not reasonable, and its sealing and gas circulation performance are poor

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