Oil free screw roots blower

The spiral shape of the Oil-Free Screw Blower is a fixed spiral mode of more than 20 °. The shield wires of the air inlet and outlet of the casing cut into the spiral line, and the triangular air inlet and outlet composed of smooth lines on the top of the rotor open in turn with the rotation of the rotor. Unlike the roots blower in the old mode, the roots blower opens and closes instantaneously, and produces pulsations that will cause whistles. So the noise during running is very low.



Because the impeller is a three blade type, it will not cause the rotor to rotate like a helical impeller



Contact with each other due to slight changes in position. Therefore, it is only necessary to ensure the clearance between the impellers on the section, without increasing the axial position change like the spiral impeller, resulting in excessive clearance. The efficiency of this kind of blower is much higher than that of propeller blower with impeller.



Screw Blower impeller adopts a special shape to maintain the gap between the impellers and greatly improve the efficiency. The impeller has undergone strict dynamic balance inspection, and the FAN runs almost without vibration.



The gear is ground in strict accordance with the national standard grade 5 gear accuracy, and the bearing hole on the wallboard is processed by precision CNC machine tool to ensure that the center distance of the gear fully meets the dimensional requirements. Therefore, the harmful interference of gears to products is completely eliminated.



The bearing and impeller are processed separately and then assembled together. The overall processing of the impeller ensures the concentricity, which makes the bearing run stably and significantly prolongs the service life of the bearing. In addition, low temperature and noise improve the performance of the fan.

The fan (vacuum pump) conveying special gas adopts four kinds of packing and other sealing methods to ensure that the fan operates without leakage. The surface of parts in contact with the medium shall be protected according to different requirements.


Oil-Free Blower
The moving surface clearance of Roots blower shall maintain zero clearance or micro clearance. The sealing performance is significantly improved; Reduce gas leakage; It has produced obvious results:



1. Increase power and save energy;



2. Help to increase pressurization (vacuum);



3. Reduce the working temperature and improve the lubrication conditions of bearing gears;



4. Reduce the vibration caused by machine noise and gas turbulence to make the machine run more smoothly.

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