The working principle of a screw air compressor: The cylinder of the screw air compressor is equipped with a pair of meshing spiral male and female rotors, which rotate in opposite directions. The gap between the rotor, housing, and rotor is only 5-10 wires. The main rotor is driven by an engine or an electric motor. The mesopore is driven by an oil film formed by the injection of the main rotor or the ends and recesses of the main rotor. Synchronous gear transmission on the rotor side. The spiral rotor slot is filled with gas when passing through the inlet. When the rotor rotates, the rotor groove is sealed by the shell wall to form a compression chamber. When the rotor slot is closed, lubricating oil is sprayed into the compression chamber and sealed, cooled, and lubricated. When the rotor rotates and compresses the mixture of lubricating oil, oil, and gas, the volume of the compression chamber decreases, and the oil gas mixture is compressed to the exhaust port. When the compression chamber passes through the exhaust port, the mixture of oil and gas is discharged from the compressor to complete the suction compression exhaust process. Each rotor of the screw machine is supported by an anti friction bearing maintained by an end cover near the end of the shaft. The intake end is supported by roller bearings, while the exhaust end is usually supported by bearings. The bearing is an exhaust end, namely a thrust bearing, supported by a pair of tapered rollers, which resist axial thrust and withstand radial loads. Provide the minimum clearance required for axial operation. The working cycle can be divided into three processes: suction, compression, and exhaust. When the rotor rotates, each pair of meshing teeth continuously completes the same working cycle.
Advantages of screw air compressors:
Screw compressors are the same as piston compressors and belong to the category of displacement compressors. Screw air compressors have the following advantages in terms of efficiency.
2. High reliability. The screw compressor has fewer parts and less wear, so it operates reliably and has a longer service life. The overhaul interval can reach 40-80000 hours.
3. Easy to operate and maintain. The screw compressor is highly automated, and operators can achieve unmanned operation without long-term professional training. 4. Good power balance. The screw compressor has no unbalanced inertia, and the machine runs smoothly at high speeds, enabling non basic operations. Especially suitable for mobile compressors. Small size, light weight, and small footprint.
5. Adaptability. Screw compressors have the characteristic of forced ventilation, with volume flow almost independent of exhaust pressure. They can maintain high efficiency over a wide range and can be applied to various working conditions without changing the compressor structure. You.
Both scroll and screw air compressors belong to volumetric rotary compressors, with the difference being that scroll air compressors use rotors and stators to form multiple compression chambers. The internal volume constantly changes to achieve gas suction and compression. The compressed air of the screw air compressor is achieved through the volume change of the tooth gaps of the male and female rotors arranged parallel to each other in the casing. Screw air compressors are widely used in various industrial fields such as machinery, metallurgy, electricity, medicine, packaging, chemical, food, mining, textile, transportation, etc. Mainstream air compressors are machines for manufacturing air compressors.
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