Dust exhausting centrifugal ventilator is a dust-exhausting special-purpose fan which has been jointly designed with the Fan Industry .The series fan has the featu res such as uneasy to collect dust and wearability.It is applicable for exhausting gas containing dust,wooden scraps,and crushed fiber etc.(if there are hard particles in gas,a dust-collecting device should be installed in front of the fan.)It can also be used as the common ventilation and air-exchange purposes.