They are essentially composed of a rotating drum, vacuum distributing system, tank, oscillating agitator and “cake” discharge device. The separated solids (so called “cake”) are uniformly dried and distributed over the outer surface of the filtration elements. Several devices can be used for the continuous discharge of the “cake” from the septum, depending to the characteristics of the treated slurry, the Clients’ specifications and needs and Tecniplant’s experience.
With this type of filter, a rubber lined roller is used to discharge the “cake”. The roller counter rotates on the drum and a scraping knife separates the “cake” from the roller. This system can be applied in the removal of “cakes” coming from slurries and suspensions with solids which, because of their chemical-physical characteristics, adhere to a special rubber lined roller better than other devices. Tecniplant is always able to recommend the correct Filter’s size based on Client’s product to be treated.