Expressing filter plate for filter press of expression type
AssigneeKurita Machinery Manufacturing Company Limited
InventorsTetsuya Kurita, Atsushi Kataoka
Life of this patent
Estimating the term…
Abstract
An expressing filter plate comprising a base plate and a diaphragm sheet covering the base plate and having a filter surface, with a pressure fluid chamber formed between the base plate and the diaphragm sheet. The diaphragm sheet is formed, in its peripheral portion to be clamped between pressed filter plates, with a fluid passing opening in communication with a fluid passage in the base plate. A covering member having a tubular portion fitting in the opening is made of a material having higher hardness than the diaphragm sheet. The covering member has a flange portion formed with fluid grooves for maintaining the tubular portion in communication with filtrate grooves in the filter surface of the diaphragm sheet.
Claims8
An expressing filter plate for a filter press of the expression type comprising:
- a base plate,
- a diaphragm sheet having a filter surface formed with filtrate grooves and covering the base plate with a pressure fluid chamber provided between the base plate and the diaphragm sheet for receiving a pressure fluid admitted through the base plate, the diaphragm sheet being formed in its peripheral portion to be clamped between pressed filter plates, with at least one fluid passing opening in communication with a fluid passage in the base plate, and
- a covering member made of a material having higher hardness than the diaphragm sheet and including a tubular portion fitting in the fluid passing opening and a flange portion formed with fluid grooves for maintaining the tubular portion in communication with the filtrate grooves of the diaphragm sheet.
Dependencies are inferred from the claim text.