Reciprocating Air Compressor is a positive compressor in which air is sucked in a chamber and compressed with the help of a reciprocating piston which is used by the compressor. It is called positive displacement. Firstly air is sucked in a chamber and then compression air is transferred to the decreasing area by the piston. Which reciprocating motion is decreased by a piston?The reciprocating compressor consists of a piston which is enclosed within the cylinder & equipped with suction & discharge valves.The piston receives power through the crankshaft and connecting rod. A flywheel/belt wheel is fitted on the crankshaft which is connected by the electric motor or diesel engine. The uniform motion throughout the cycle of operations.The compression air is first drawing a volume of air into the cylinder through suction valves during the piston stroke. The compressing & discharging on the return stroke of the piston through delivery valves.This work is used in every Reciprocating Air Compressor. You will easily understand compressor engineering from the below description. The main three types of air compressors are used for industrial works:1.)   The Single Stage Reciprocating Air Compressor Works2.)   The Double Stage Reciprocating Air Compressor Works 3.)   The three-stage air compressors workSingle Stage Reciprocating Air Compressor Works  In the single-stage reciprocating air compressor, the entire compression air is carried out by a single cylinder.The compression air is affected in one end of the piston. The cylinder is known as single-acting, the compression air is affected in both ends of the piston, and the cylinder is known as a double-acting reciprocating air compressor.The opening & closing of a simple check valve depends upon the differential pressure, if mechanically operated valves are used for suction & discharge then their functioning is controlled by cams that are on the wheel.Double Stage Reciprocating Air Compressor Works In the double stage or two stages, reciprocating air compressors consist of two cylinders. One is called a low-pressure cylinder and the second is called a high-pressure cylinder.When the piston in a low-pressure cylinder is the outer dead center (ODC) the weight of air inside the cylinder is zero, as the piston moves towards the inner dead center (IDC) pressure falls below atmospheric pressure when suction valves open due to a pressure difference.The atmospheric air is drawn into the low-pressure cylinder through an air suction filter. Air is compressed by the piston and pressure inside & outside the cylinder is equal. When both are equal point suction then valves closed.The three-stage air compressors.Working Principle of Multi-Stage Air Compressor  Most industries required air pressure of more than 35 kg/cm to produce their product. For example, a mineral water bottle requires air pressure of more than 40 kg/cm. To produce the desired shape of a bottle at the bottom side and other fields in industrial.In two stages reciprocating air compressor is not useful. We required the air compressor which produces air pressure above 35 kg/cm.Air pressure is released when achieved by a multi-stage air compressor. Now use three-stage reciprocating air compressors as a multi-stage air compressor. If we are required air pressure discharge above 85 kg/cm then four-stage air compressors are useful.

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