Chamber filter press with rotor plates

A chamber filter press comprising in combination

• a plurality of first chamber plates fixedly secured in spaced relationship parallel to each other to at least one first hollow connecting rod, each of said first chamber plates comprising two spaced apart circular perforate backing plates extending parallel to each other and each being provided with a filter medium, the backing plates defining a first hollow space in each of said first chamber plates fluidly connected by a bore hole to said at least one first hollow connecting rod for discharging filtrate received through said filter medium and said perforate backing plates,
• a plurality of second chamber plates fixedly secured in spaced relationship parallel to each other to at least one second hollow connecting rod, each of said second chamber plates being provided with a circular opening and being substantially disposed parallel to and between two adjacent of said first chamber plates so as to receive circumferential end portions of the backing plates thereof so that second hollow spaces are defined within each of said second chamber plates by said adjacent backing plates, said second hollow spaces being in fluid connection with said at least one second connecting rod by respective bore holes for the supply of pulp to be filtered into the second hollow spaces,
• each of said first chamber plates being provided with a central through hole penetrated by a rotor shaft extending through said filter press parallel to said first and second connecting rods, said rotor shaft being provided with a plurality of rotor plates fixedly secured thereto in spaced relationship to each other, each of said rotor plates being disposed in a different one of said second hollow spaces and being provided with generally radially extending ribs,
• means for supporting said first and second connecting rods such that they are axially displaceable with respect to each other,
• driving means operationally connected to said first and second connecting rods so as to mutually axially displace said first and second connecting rods in order to effect a mutual movement of the first and second chamber plates between a closed position in which the second chamber plates engage both of the adjacent first chamber plates, and a first open position in which the first chamber plates in each case are pulled out on one side from one of the adjacent second chamber plates, and a second open position wherein the first chamber plates are pulled out on the other side from the other of said adjacent second chamber plates,
• wherein the outermost of said series of second chamber plates each are formed by end plates each having a circular recess housing a rotor plate and receiving the circumferential end portion of the backing plate of the respective adjacent first chamber plate and being provided with a central through hole penetrated by said rotor shaft,
• and driving means connected to said rotor shaft for rotatably driving and axially displacing said rotor shaft with respect to said first chamber plates.