an air compressor

Abstract

The invention belongs to the technical field of air compressors. The invention discloses a four-piston air compressor, which comprises a casing and four pistons. The inside of the casing is provided with four independent control chambers and four air chambers. The four pistons are located in four control chambers respectively. Between the control chamber and the four air chambers, the isolation of the control chamber and the air chamber is realized, and the P port and T port on the housing are alternately connected with the four control chambers, and the air in the corresponding air chambers is sequentially compressed and output acting. The air compressor of the present invention can realize continuous and uninterrupted compression and output of compressed air under the drive of hydraulic pressure, reduce the pressure and flow pulsation of the output gas of the entire air compressor, and improve the stability of compressed gas output.

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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