The printer uses Roots blower for paper feeding. The exhaust can be used for separating, aligning and distributing. Roots blower can be printed in paper with air supply system, the paper separation, transmission, alignment, distribution, roots blower with roots blower as the advantage of the blast system is that the output of air volume stability, not according to the change of pressure in front of the change of the air volume, he is a kind of positive displacement blower, in addition, he output gas excluding oil, won’t produce pollution to the paper.

Roots blower is a kind of general machinery, its specific classification is as follows:

1. According to different impeller classification: two-leaf Roots blower and three-leaf  Roots blower.

2. According to different applications: common roots blower;Negative pressure Roots blower; Roots blower for special gases.

3. Different types of cooling: air-cooled Roots blower; Water-cooled Roots blower.

4. According to different blower structure classification: single oil tank; Double oil tanks; intensive

5. According to the transmission mode different classification: directly connected transmission; Belt drive.

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