Application of return fan in Roots blowe

  Application of return fan in Roots Blower , Return fan: also known as Roots fan, it is a rotary compressor that uses the relative movement of two impeller rotors in the cylinder to compress and transport gas
This concave curved surface part forms a working volume with the inner wall of the cylinder
In the rotor return compressor, the two rotors are meshed by the synchronous gear at the rotor shaft end
During each rotation of the fan rotor, the gas is taken away from the suction port
When it is moved near the exhaust port and connected with the exhaust port, the pressure in the working volume suddenly increases due to the backflow of gas with higher pressure, and then the gas is transported to the exhaust channel

  The new three leaf energy-saving return Roots fan developed by ruituo fan Co
, Ltd
has the following characteristics: 1
The fan castings are precision cast by resin sand in Zibo Shuangli foundry, a designated supplier of Nasim vacuum pump company in Germany
The casting has excellent quality and stable performance
2
The impeller adopts advanced compound profile and is processed by precision CNC machine tool
After the impeller is assembled, the clearance is uniform and the volumetric efficiency is greatly improved
3
The world's advanced structural design schemes such as special-shaped inlet and outlet and internal reflux are adopted to slow down the reflux impact of high-pressure gas and effectively reduce the fan noise
4
Splash lubrication is adopted for the main and auxiliary oil tanks, which makes the lubrication of gears and bearings safer and more reliable
5
The bearing adopts NSK products of Japan Seiko, and the belt is imported by gates company of the United States
6
The gears are produced by Zhuzhou gear factory and are made of 20CrMnTi
The accuracy reaches grade 5 of GB / t10095 (two accuracy levels higher than Grade 7 of the standard)
The tooth surface and conical hole are carburized and quenched, and the hardness reaches hrc56-62
7
The sealing structure is optimized, and the transmitted gas will never contain oil
With the above performance characteristics, & quot; Ruituo & quot; The fan runs smoothly without vibration, and the quality is more safe and reliable

The special negative pressure roots blower for vacuum pumping must be equipped with a belt cover to prevent clothes and hands from being drawn between the belt and pulley

Characteristics of Roots blower ● due to the use of three blade runner and box with spiral line, the noise and vibration of the blower is very small ● the impeller and shaft are of integral structure, and the impeller is free of wear
The performance of the fan remains unchanged for a long time and can operate continuously for a long time ● high speed, high efficiency and very compact structure
● simple structure, superior durability due to the use of special bearings, longer service life than domestic fans, and convenient maintenance and management ● due to the gear oil rejection device, there will be no oil leakage

Working principle of Roots blower at low pressure: the low-pressure gas enters the working chamber from the suction port opened on the static vortex disk
As the moving vortex disk rotates in a plane with a small radius around the center of the static vortex disk, the working chamber expands or decreases accordingly, and the compressed air is discharged from the exhaust port at the center of the static vortex disk