The  air  slide China compressor has the advantages of simple structure, long service life, easy realization of large capacity and high pressure output. The disadvantage is the vibration and noise, and because the exhaust is intermittent, the output pulse need storage tank.
Single stage piston air compressor, commonly used in the need for 0.3 - 0.7MPa pressure range of the system. Single stage piston air compressor if the pressure exceeds 0.6MPa, the performance of the index will be a sharp decline, it is often used multilevel compression to improve the output pressure. In order to improve the efficiency and reduce the air temperature, the intermediate cooling is needed. Figure 2 (a) for two stage compression piston type air compressor equipment schematic diagram. As shown in Figure 2 (b) shown, air through the low pressure cylinder after pressure from p 1 increased to p 2, temperature by t l rose to T 2; and then flows into intermediate cooler, in under the pressure of cooling water heat transfer, the temperature dropped to t l; and the high pressure cylinder is compressed to the pressure P 3. And by the visible into the low-pressure cylinder and the pressure cylinder air temperature T L and T 2, is located in the same isotherm 12 '3', two compression process 12, 2 '3 deviates isotherms not far. The same compression ratio p / P 1 single stage compression process of 123 ", two-stage compression from isotherm 12 '3' far more than, namely the temperature to high many. And single stage compression power consumption is equivalent to "613 area 46, two-stage compression power consumption is equivalent to the area 61256 and 52 '345 and save the power equivalent to 2' 23 '32'. Visible, step compression can reduce exhaust temperature, save compression work, improve efficiency.