Patent ID: 7163106

Claim:
A strainer for fibrous suspensions, comprising: a substantially cylindrical container defining a vertical longitudinal axis; at least one substantially cylindrical filtering basket positioned coaxially inside said container; at least one rotor positioned coaxially inside said filtering basket and comprising an essentially cylindrical body provided with protruding blades; motorization means coupled with said cylindrical body to set said rotor rotating; a collector body positioned in the upper part of said container to define a collector chamber for said fibrous suspension to be cleaned; at least one inlet pipe for said suspension to be cleaned and at least one outlet pipe for the contaminants separated from said fibrous suspension, both connected to said collector body; at least one drain chamber for the rejected suspension, positioned in the lower part of said container and connected to at least one drain pipe; at least one delivery chamber for the filtered suspension, included in the air space created between said filtering basket and said container and connected to at least one delivery pipe, wherein said collector body comprises a lower collector and an upper collector with substantially circular cross section, both with radial longitudinal profile in the shape of a truncated cone and connected to each other in correspondence with the long bases, wherein said lower collector has the short base facing said filtering basket and said upper collector has the short base facing upwards.