摘要 |
Method and apparatus for pressure filtering in a pressure filter comprising a frame carrying press plates, which can be brought together and apart, the press plates between themselves forming pressure chambers. In each pressure chamber there are two filter cloths forming a filter element, said filter cloths being connected to each other in one piece and hanging down from a suspension rod resting on guide rails. During operation a suspension of solid particles in a liquid is introduced between the filter cloths in the pressure chambers. The liquid is pressed through the filter cloths under the influence of membranes loaded by a pressurized medium and by blowing through a gas and is removed through drain channels. The filter cakes remaining between the filter cloths are discharged after bringing apart the press plates by vibrating of the filter cloths. In order to clean the filter cloths from solid particles remaining thereon pipelike means mounted on a laterally movable drip pan are inserted between the filter cloths and spray downwardly directed spray jets of washing liquid on the filter cloths. |