What is the difference between an air pump and an air compressor

What is the difference between an air pump and an air compressor

Many people think that an air compressor is actually an air pump. Generally speaking, the basic principle is still the same, but there are differences in the actual structure. According to relevant data, the intake and exhaust of the air compressor have valves.

The exhaust of an air pump is generally straight-through. Therefore, it is better to buy an air compressor as much as possible when purchasing.

Hefei Air Compressor will introduce the difference between an air compressor and an air pump. I hope it can help you more. A good understanding of the related concepts of air compressors. The working principle of the air compressor: The air inlet and the air outlet of the air compressor are respectively located at both ends of the shell, and the slots of the female rotor and the teeth of the male rotor are driven to rotate by the main motor.

The compressor is directly driven by the electric motor, which causes the crankshaft to rotate, and drives the connecting rod to cause the piston to reciprocate, causing the cylinder volume to change. Due to the change in the pressure in the cylinder, the air enters the cylinder through the air filter (muffler) through the intake valve. During the compression stroke, due to the reduction of the cylinder volume, the compressed air passes through the exhaust valve and passes through the exhaust pipe. The valve (check valve) enters the gas storage tank, and when the exhaust pressure reaches the rated pressure of 0.7MPa, it is controlled by the pressure switch and automatically stops. When the pressure of the gas storage tank drops to 0.5-0.6MPa, the pressure switch is automatically connected and activated.

The working principle of the air pump: The engine drives the crankshaft of the air pump through two V-belts, thereby driving the piston to pump air, and the pumped gas is introduced into the air reservoir through the pipeline. On the other hand, the gas storage cylinder introduces the gas in the gas storage cylinder into the pressure regulating valve fixed on the gas pump through a gas pipeline, thereby controlling the air pressure in the gas storage cylinder.

When the air pressure in the storage tank does not reach the pressure set by the pressure regulating valve, the gas entering the pressure regulating valve from the gas storage cylinder cannot open the pressure regulating valve valve; when the air pressure in the gas storage cylinder reaches the pressure set by the pressure regulating valve At the time, the gas entering the pressure regulating valve from the gas storage cylinder opens the pressure regulating valve valve, enters the air passage in the air pump communicating with the pressure regulating valve, and controls the air inlet of the air pump to be normally open through the air passage, so that the air pump runs at no load , To achieve the purpose of reducing power loss and protecting the air pump.

When the air pressure in the air storage cylinder is lower than the pressure set by the pressure regulating valve due to loss, the valve in the pressure regulating valve is returned by the return spring to disconnect the control air circuit of the air pump, and the air pump starts pumping again.