The difference between the cylinder and air pump?

Pump and cylinder is the important part of the pneumatic working system, but a significant difference between the two. Cylinder is usually refers to using the compressor internal working parts, such as piston reciprocating motion in the cylinder, the gas pressure, or is the use of compressed air machine, cylinder also have their own work. Cylinder, which is to guide the piston in one straight line reciprocating movement of the cylindrical metal parts. Working medium in the engine cylinder converts heat into mechanical energy by inflation; Gas in compressor cylinder piston compression to increase pressure. Turbine, rotary piston engine housing is usually also called 'cylinder'. Pump ( qìbèng） , i. e. , air pump, air, or from a closed space from closed space to add a device in the air. Pump can be divided into electric pump and hand pump, foot pump. The electric pump. A pump powered by electricity, through the power of compressed air, air pressure is produced. Engine pump working principle is through the two triangle drive pump crankshaft, so as to drive the piston to cheer, hit the gas through the pipeline import gas reservoir. Pump working principle is: the engine by two triangle drive pump crankshaft, so as to drive the piston to cheer, hit the gas through the airway import gas reservoir. When the air pressure inside the gas reservoir pressure regulating valve setting pressure has not been achieved, the gas reservoir into the pressure regulating valve in the gas can't open the top pressure regulating valve valve; When the pressure inside the gas reservoir pressure regulating valve setting pressure, from within the gas reservoir into the open pressure regulating valve of gas pressure regulating valve, the valve into the pump and pressure regulating valve are interlinked in the airway, and through the air inlet normally open airway control pump, to pump empty load operation, to reduce power consumption, and protect the pump. Strictly speaking, the structure of air pump, reciprocating is just one of them, and screw, etc.