Air compressor

Abstract

The invention belongs to the technical field of air compressors, and discloses a four-piston air compressor. The four-piston air compressor comprises a housing and four pistons, wherein four control chambers and four air chambers which are independent of one another are arranged in the housing; the four pistons are correspondingly positioned among the four control chambers and the four air chambers, so that the control chambers and the air chambers are isolated; and a port P and a port T which are positioned on the housing alternately communicate with the four control chambers, so that air inthe corresponding air chambers is sequentially compressed in turn and output to do work. The air compressor can be driven by hydraulic pressure to continuously compress and output compressed air, so that the pressure and flow pulsation of the output air of the whole air compressor are reduced, and the output stability of the compressed air is improved.

Description

technical field [0001] The invention belongs to the technical field of air compressors, and in particular relates to a four-piston air compressor. Background technique [0002] With the large-scale application of large-scale mechanical equipment, the use of hydraulic drive technology in the field of air compressor application technology is becoming more and more mature. Among them, the traditional air compressor uses a crank connecting rod mechanism to realize the reciprocating movement of the piston in the cylinder to compress the air. The output pulse of this type of air compressor is large, unstable, and it is easy to get stuck under severe working conditions. [0003] In the current hydraulic air compressor, the reciprocating motion of the piston is usually realized by means of the reversing valve, that is, the purpose of controlling the reversing is achieved by the cooperation of the electromagnetic reversing valve and the displacement sensor. However, the proximity sw...

AI Technical Summary

Problems solved by technology

However, the proximity switch controls the sensor, not only the commutation is unstable and the reliability is poor, but also the control circuit part of the reversing device is controlled by a circuit board. Because the circuit board is a non-standard part, it is difficult to manufacture and process, and it is very difficult to repair after damage. , high maintenance cost

At the same time, if the existing reversing device is continuously energized for a long time, it is easy to damage small devices and cannot meet the requirements of long-term energization, which also affects production efficiency to a certain extent

[0004] In addition, in the Chinese invention patent with the application number 201810479411.1 titled a hydraulically driven reciprocating air compressor, although the disclosed air compressor can realize the automatic reciprocating motion of the control piston and does not require electronic control, but , when the piston movement is in place, it needs to stop completely and wait for the external reversing valve to complete the reversing operation before it can perform reverse movement

In this way, the output gas pressure and flow will pulsate, and the external reversing valve has a large volume, contains many valve parts, and is expensive, and the external reversing valve has complicated oil circuit, complicated control and complex structure. When a fault occurs, it is neither easy to troubleshoot nor repair

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