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Which of the single-screw air compressors and twin-screw air compressors is more advantageous in electric screw air compressors?

  • Categories:Industry News
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  • Time of issue:2020-10-28 14:35
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(Summary description)Which of the single-screw air compressors and twin-screw air compressors is more advantageous in electric screw air compressors?

Which of the single-screw air compressors and twin-screw air compressors is more advantageous in electric screw air compressors?

(Summary description)Which of the single-screw air compressors and twin-screw air compressors is more advantageous in electric screw air compressors?

  • Categories:Industry News
  • Author:
  • Origin:
  • Time of issue:2020-10-28 14:35
  • Views:
Information

Which of the single-screw air compressors and twin-screw air compressors is more advantageous in electric screw air compressors?

1. In principle: the single-screw air compressor uses a single-screw rotor to drive two symmetrically distributed star wheels to rotate. The screw groove and the inner wall of the casing form a closed elementary volume, so that the gas can reach the required pressure. The advantages are: low manufacturing cost, simple structure, ideal force balance, no clearance volume, etc.;The twin-screw air compressor is composed of a pair of rotors that are distributed in parallel and meshed with each other. When working, one rotor rotates clockwise and the other rotates counterclockwise. The required pressure gas is generated during the meshing process. Advantages: extremely high mechanical reliability Performance, excellent dynamic balance, stable operation, strong applicability, etc.

2. Technically: Single-screw air compressors are not as mature as twin-screws, and there are no relevant industry standards and national standards. If the machine fails, the interpretation right belongs to the air compressor manufacturer. Twin-screw air compressors must comply with national standards and industry standards GB8542. TB/T6430. The single screw air compressor uses a single screw to mesh with two star wheels to compress air.

The direct contact of the three leads to serious friction between the star wheel and the rotor, the use time is not long, the internal leakage of the nose is large, and the exhaust volume is reduced. The twin-screw meshes through the male and female rotors, there is an oil film between the two rotors without direct contact, the friction is small, and the displacement does not change with time.

3. Motor: The main motor of the single-screw air compressor is an ordinary motor, and the main motor of the twin-screw is an energy-saving motor. Therefore, the bearings of the single-screw motor are seriously worn and increase operating costs.

4.maintenance costs: electric screw air compressor manufacturers believe that although the purchase cost of single screw air compressors is relatively low, the friction between the star wheel and the rotor is more serious, and the need to replace the star wheel, maintenance costs and operating costs will naturally be high , Otherwise the exhaust gas return loss will seriously fail to meet the specified requirements. Although the temporary purchase cost of a twin-screw air compressor is high, it has extremely high mechanical reliability, stable operation, and strong applicability, so that the later maintenance cost is very low, the failure rate is low, and it will not affect production.

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