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The screw machine is a small machine that automatically locks screws. Its action structure can generally be divided into two parts: a feeding part and an electric batch part. The feeding part is responsible for screening and providing screws, and the electric batching part is responsible for taking and locking screws. The generation of the machine not only improves the work efficiency but also reduces the manual work intensity.
Screw air compressor is an oil-injected single-stage twin-screw compressor, divided into single-screw type and twin-screw type. It adopts pulley transmission to drive the main engine to rotate for air compression. The compressed air in the main engine is cooled by oil injection, and the main engine is discharged. The mixed gas of air and oil is separated by two stages of coarse and fine separation, and the oil in the compressed air is separated, and then clean compressed air is obtained.
Compared with the piston compressor, the screw air compressor has a much lower probability of failure, but if it is improperly used and maintained, its advantages are difficult to take advantage of.
The working process of the twin-screw compressor: the motor drives the main rotor through the coupling, speed-increasing gear or belt. Because the two rotors mesh with each other, the main rotor directly drives the auxiliary rotor to rotate together. Under the action of relative negative pressure, air is sucked in. When the tooth crest and the tooth groove work together, the gas is transported and compressed. When the rotor meshing surface turns to communicate with the exhaust port of the casing, the compressed gas begins to be discharged.
The main performance parameters of screw air compressors are power, volumetric flow, suction pressure, outlet temperature, discharge pressure and speed. In the design of screw air compressors, a pair of intermeshing rotors is a very important parameter.
The direct drive of Variable Speed electric driven screw air compressor SPM35Y refers to that the motor main shaft drives the rotor through the coupling and gearbox speed change, which is not actually a direct drive in the sense.
The compressor is a driven fluid machine that promotes low-pressure gas to high-pressure gas. It sucks in low-temperature and low-pressure refrigerant gas from the suction pipe, drives the piston to compress it through the operation of the motor, and discharges the high-temperature and high-pressure refrigerant gas to the exhaust pipe to provide power for the refrigeration cycle.
   At present, the air compressor adopts two-point control (upper and lower limit control) or start-stop control (small air compressor), that is, when the pressure in the compressed gas cylinder reaches the upper limit of the set value, the air compressor passes its own air pressure Or the oil pressure closes the intake valve and the small air compressor stops. When the pressure drops to the lower limit of the set value, the air compressor opens the intake valve, and the small air compressor starts again. The traditional control method is easy to cause an impact on the power grid, and it also has certain damage to the air compressor itself, especially when the air consumption fluctuates frequently.
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