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Category air compressor
Author: 恒達壓縮機 From: njhengda.cn Date: 2016-05-21 Hitcounts:
Many types of air compressors, according to the principle can be divided into displacement compressors, reciprocating compressors, centrifugal compressors, positive displacement compressor works by compressing the volume of gas, so that gas molecules per unit volume density increases to increase the pressure of compressed air; centrifugal compressor works is to improve the speed of movement of the gas molecules, gas molecules with a kinetic energy into pressure energy of the gas, thereby increasing the pressure of the compressed air. Reciprocating compressor (also called piston compressor) works directly compressed gas, when the gas pressure reaches a certain discharge. Now commonly used air compressor piston air compressors, screw air compressors (screw air compressors are divided into twin-screw air compressors and single screw air compressor), centrifugal compressors and vane-type air compressor machine, scroll air compressor. The following are definitions of various compressors. Cam, diaphragm and diffusion pumps and other compressor is not included, because they use a special and relatively small size.

Air is compressible, the air compressor to do mechanical movement make itself smaller in size, air pressure increase after called compressed air. It is an important source of power, has a clean, clear and transparent, easy to transport, sound, flammable small, not afraid to play a significant load characteristics and so on.

Air compressor as an important form of energy generation, is widely used in all aspects of life and production. Especially twin-screw air compressors are widely used in many industrial machinery, metallurgy, power electronics, pharmaceutical, packaging, chemicals, food, mining, textiles, transportation, etc., become the mainstream product of compressed air compressor, it is to a normal atmospheric air by way of the output energy conversion to meet the needs of users of air equipment, energy conversion is generally understood as the mechanical energy into kinetic energy. Press compression way into power and positive displacement, divided into power through a dry-type centrifugal etc; displacement piston into screw vane and the like.

Screw Compressors principle

1, the process of breathing:

Screw the intake side of the intake port, the compression chamber must be designed to fully inhale and screw compressor has no intake and exhaust manifolds, intake alone a regulating valve to open and close regulation, when when the rotor rotates, main rotor tooth groove space go to the inlet end wall opening, its largest space, then the rotor tooth groove space with free air intake port of the same, because when the exhaust air of the tooth groove is fully discharged, the exhaust end of the tooth groove is in a vacuum, when the air inlet to the outside air sucked namely, into the main rotor axial tooth deputy trench. When the air is full of the entire tooth groove, the intake-side end surface of the rotor to turn from the inlet port of the housing, i.e. closed air between the tooth groove.

2, the closure and transfer process:

Two main and auxiliary rotor at the end of inspiration, the main and auxiliary rotor teeth and the casing of closing of the summit, when the air is no longer in the tooth trench drain seal off that [the closure process]. Two rotors continue to rotate the tooth and tooth groove at peak inspiratory end anastomosis surface and gradually move to the exhaust side.

3, compression and injection process:

In the transportation process, the engagement surface and gradually move to the exhaust side, that is gradually reduced tooth groove between the engaging surface and the exhaust port between the teeth of the trench is gradually compressed gas, the pressure increase, namely [compression]. But also because the compression while lubricating oil pressure difference and compressed gas is injected into the mixing chamber and the chamber.

4, the discharge process:

When the engagement end surface of the rotor to communicate with the cabinet exhaust, (in this case the highest pressure of compressed gas) is compressed the gas begins to discharge until the engagement surface of teeth and tooth groove peak moved to the end face of the exhaust gas, then the two rotors engaging surface casing vent this tooth groove space is zero, complete (exhaust process), at the same time engaging surface of the rotor and the casing into the tooth groove length between the inlet and the longest, the intake process and conducting.

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