"Blower Fan" main purposes: sewage treatment, aquaculture, pneumatic conveying, cement, chemical, foundry, flour and other economic sectors. Fan product requirements is that the intake conveying medium temperature shall not exceed 40 ℃, medium particulate impurities shall not exceed 1000mg / m ; the maximum particle size should 0,1mm or less. When using a booster, may not exceed the nominal value of the boost provided on the blower nameplate due Roots blower special structure, so the operation requires many differences with other fans, it must be noted.