B - Operations – Transporting – 01 – D
Patent
B - Operations, Transporting
01
D
182/53
B01D 33/00 (2006.01) B01D 29/09 (2006.01)
Patent
CA 1274782
ABSTRACT OF THE DISCLOSURE: An automatic filtration dewatering system, comprising a cover to which a filtration raw liquid supply pipe and a pressure air supply pipe are connected, a plate having a filter medium support engaged with an upper surface thereof and a filtrate exhaust pipe, a pneumatic cylinder for vertically moving said cover into and out of contact with said plate, a plurality of filter medium moving rollers provided on both sides of said cover and said plate, and a sheet-like long filter medium stretched over said rollers and adapted to be moved by a predetermined distance per one step of filtration, said filter medium being temporarily fixedly held between a circumferential portion of said cover and a circumferential portion of said plate; and further including a control system having valve means for operating said pneumatic cylinder just after receiving a starting signal to close said cover and said plate, pump means for supplying raw liquid for filtration after such closed condition is detected and a predetermined closed time has elapsed, means for stopping supply of said raw liquid at the earlier time either when of said raw liquid in said cover has reached a predetermined value or a predetermined filtration time has elapsed, means for supplying pressurized air when air pressure in said cover becomes lower than a predetermined value after a predetermined filtrate discharging time has elapsed, means for operating said pneumatic cylinder to separate said cover from said plate, and switch means for detecting a separate position of said cover means of a limit switch to generate a signal for starting movement of said filter medium.
505187
Iriyama Yasunori
Osuga Jouichiro
Yagishita Aisaburo
Kabushiki Kaisha Yagishita
Robic
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