Filter press with spray washing means

A spray washing means for washing opposite sides of a filter plate having bores for filtering and for back washing when said plate is taken from a stack of filter plates mounted in a filter press, said means being adapted for washing the plate after filtering, comprising:

• a spray pipe formed with a single inlet portion and a loop portion formed of two branched lines which are adapted to enclose a selected filter plate between said two branched lines;
• nozzles in said loop portion in each of said two branched lines which face each other for simultaneous spraying opposite lateral surfaces of said filter plate under the same spraying pressure during spray washing by said pipe with water;
• a carrier frame including generally vertical struts on which said spray pipe is mounted, said carrier frame being shiftable in a horizontal direction along the stack of plates in the filter press;
• guides mounted on said vertical struts for guiding the vertical movement of said spray pipe;
• said carrier frame further including a receiving tank at the underside of said carrier frame for collecting the spray water from said nozzles;
• said receiving tank and carrier frame together being formed as a rectangular support;
• a substantially vertical baffle suspended in a balanced relationship from each of said branched lines which is in alignment with the bores of the filter plate being washed, said baffle serving as a protective sheet to block washing liquid penetrating the bores of said plate and directing the blocked liquid into the receiving tank;
• and
• said baffles having their lower edges curved toward each other and being swivelable toward a horizontal plane when in abuting relation to the receiving tank.