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AssigneeTsukishima Kikai Co., Ltd.
InventorsTakashi Murasawa, Yoshiyuki Moro, Tetsuhiro Nishikawa
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A screw pressing type filtering apparatus that discharges a treated substance having a constant water content, including a screw rotatably provided inside a substantially cylindrical filter body so that a substance supplied to the space between the screw and the filter body is filtered by the filter body while being conveyed by the rotating screw. The apparatus further includes: a back pressure valve installed in the discharge port of the filter body to restrict the discharge amount of the filtered substance, an air cylinder that supplies a pressure to the back pressure valve, a valve opening detector which detects the opening amount of the back pressure valve relative to the discharge port, and a control section which controls the air cylinder based upon the detection results of the valve opening detector so that a pressure that corresponds to the degree of opening is supplied to the back pressure valve.
A screw pressing type filtering apparatus comprising a substantially cylindrical filter body and a screw rotatably provided in said filter body so that a substance supplied from one end of said screw into a space between said screw and said filter body is filtered by said filter body while being conveyed to another end of said screw by a rotation of said screw, said filtering apparatus further comprising:
A filtration method for a screw pressing type filtering apparatus that comprises a substantially cylindrical filter body and a screw rotatably provided in said filter body so that a substance supplied from one end of said screw into a space between said screw and said filter body is filtered by said filter body while being conveyed to another end of said screw by a rotation of said screw, said method comprising the steps of:
A recording medium which is recorded with a control program and is used in a screw pressing type filtering apparatus that comprises a substantially cylindrical filter body and a screw rotatably provided in said filter body so that a substance supplied from one end of said screw into a space between said screw and said filter body is filtered by said filter body while being conveyed to another end of said screw by a rotation of said screw, said recording medium causing a computer to execute:
Dependencies are inferred from the claim text.