Sludge filtration device comprising a filter piston, and sludge treatment plant and sludge filtration process thereof
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
B01D-033/01
B30B-009/04
출원번호
US-0957747
(1997-10-24)
우선권정보
FR-0013029 (1996-10-25)
발명자
/ 주소
Norais Marcel,FRX
Neveu Bernard,FRX
출원인 / 주소
Elf Atochem S.A., FRX
대리인 / 주소
Pennie & Edmonds LLP
인용정보
피인용 횟수 :
12인용 특허 :
7
초록▼
The sludge filtration device comprises: a filter (1) placed over an approximately horizontal box (4), this filter (1) constituting, in its filtration position, the bottom of a filter chamber (8) of essentially vertical axis; a piston (10) suitable for closing the filter chamber in the top part; mean
The sludge filtration device comprises: a filter (1) placed over an approximately horizontal box (4), this filter (1) constituting, in its filtration position, the bottom of a filter chamber (8) of essentially vertical axis; a piston (10) suitable for closing the filter chamber in the top part; means (3, 11) for causing relative movement between the box (4) provided with the filter (1) and the piston (10) so that a liquid filtrate flows downwards through the filter (1) and so that a cake of solid matter remains on the filter (1) at the end of the operation; and a scraper device (31) provided for removing this cake. The piston is made in the form of a filter piston (10) so that a liquid effluent passes through the filter piston (10) as the volume of the filter chamber (8) is being decreased, and a suction pumping means (P) is provided for removing the effluent above the filter piston (10).
대표청구항▼
[ What is claimed is:] [1.] Sludge filtration device, comprising:a first filter (1) placed over an approximately horizontal box (4) which can be moved from a filtering position to a cleaning position and vice versa, wherein the filtering position is a position where the first filter (1) constitutes
[ What is claimed is:] [1.] Sludge filtration device, comprising:a first filter (1) placed over an approximately horizontal box (4) which can be moved from a filtering position to a cleaning position and vice versa, wherein the filtering position is a position where the first filter (1) constitutes a bottom of a filter chamber (8) of essentially vertical axis,a piston (10) suitable for closing the filter chamber at a top part,means (3, 11) for causing relative movement between the box (4) provided with the first filter (1) and the piston (10) in order, as the piston and box are being moved closer together, for pressure to be exerted on a volume of a sludge introduced into the filter chamber (8), so that a liquid filtrate flows downwards through the first filter (1) and so that a cake (G) of solid matter remains on the first filter (1),and a scraper device (31) provided for removing this cake when the first filter (1) is placed in its cleaning position,wherein the piston is made in the form of a filter piston (10) so that an effluent passes through the filter piston (10) as the volume of the filter chamber (8) is being decreased and a suction pumping means (P) is provided for removing the effluent above the filter piston (10). [13.] Sludge filtration process using a filtration device according to claim 1 comprising the steps of:placing a first filter (1) over an approximately horizontal box (4) to constitute a bottom of a filter chamber (8) of essentially vertical axis;operating means (3, 11) to cause relative movement between the box (4) provided with the first filter (1) and a filter piston (10), as the piston and box are being moved closer together, for pressure to be exerted on a volume of a sludge introduced into the filter chamber (8), so that a liquid filtrate flows downwards through the first filter (1), so that an effluent passes through the filter piston (10) and so that a cake (G) of solid matter remains on the first filter (1);at the same time, operating a suction pumping means (P) to remove the effluent above the filter piston;moving the first filter into a cleaning position; andremoving the cake from the first filter by a scraper device (31). The sludge filtration process according to claim 13 wherein the suction pumping means (P) is a vacuum pump. Sludge treatment plant for liquid manure, comprising at least one filtration device which comprises:a first filter (1) placed over an approximately horizontal box (4) which can be moved from a filtering position to a cleaning position and vice versa, wherein the filtering position is a position where the first filter (1) constitutes a bottom of a filter chamber (8) of essentially vertical axis,a piston (10) suitable for closing the filter chamber at a top part,means (3, 11) for causing relative movement between the box (4) provided with the first filter (1) and the piston (10) in order, as the piston and box are being moved closer together, for pressure to be exerted on a volume of a sludge introduced into the filter chamber (8), so that a liquid filtrate flows downwards through the first filter (1) and so that a cake (G) of solid matter remains on the first filter (1),and a scraper device (31) provided for removing this cake when the first filter (1) is placed in its cleaning position,wherein the piston is made in the form of a filter piston (10) so that an effluent passes through the filter piston (10) as the volume of the filter chamber (8) is being decreased and in that a suction pumping means (P) is provided for removing the effluent above the filter piston (10).
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이 특허에 인용된 특허 (7)
Dick ; Jr. Perry J. (Pittsburgh PA), Apparatus for consolidation of slurries of solid particulate materials.
Kramer Timothy A. (606 Bay Ave. Pt. Pleasant Beach NJ 08742) Kramer Kent M. (7 Williams St. Rumson NJ 07760), Method and apparatus for removing liquid from permeable material.
Pancaldi, Fabio; Gallocchio, Vanni, Filtering and compacting device for solid particles suspended and contained in fluids, such as slurry from mechanical operations.
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