Method of cleaning filter discs in a suction dryer using ultrasonic vibration

Abstract From the Canadian patent

Method in a suction dryer which comprises a basin for, the suspension to be suction-dried in connection with which said, basin one or several filter-plate discs revolve onto whose faces, a filtrate cake is gathered and dewatered by the effect of a suction flow passing through the filter plates the filtrate, cake/cakes being scraped or otherwise detached from the faces of the filter plates. For the purpose of cleaning the porous structure and faces of the filter plates, ultrasonic transducers are provided in connection with the basin for the suspension to be filtered, to which said transducers an electric power of ultrasonic frequency is fed out of an ultrasonic generator. For the time of …