Liquid purification or separation – Processes – Separating
Patent
1994-06-29
1995-09-12
Dawson, Robert A.
Liquid purification or separation
Processes
Separating
210806, B01D 3704
Patent
active
054494699
ABSTRACT:
Filtering systems used to filter contaminated fluid. The filtering system (10) includes a supply pump (12); a filter tank (14) having a plurality of removable filter cassettes (16) disposed therein, each filter cassette housing in proper orientation a filter pad (164); a suction pump (18); a level control mechanism (148) maintaining a substantially uniform level of contaminated fluid within the filter tank; and a control panel (20) housing other process control components. Operation of the filtering system includes a backflush cycle and a relaxation cycle to extend the loading life of the filter pads. Also included is a preventive measure designed to eliminate fluid shear that may result as the filter pads approach the end of their loading life. The double-density filtering system (300) employs double-density filter cassettes (304), each cassette housing a pair of filter pads (164). This allows the volume of the filter tank (302) to be reduced, thereby reducing turnover. An enlarged chamber (392) within the double-density filter cassettes reduces fluid turbidity, thereby increasing both flow performance and filter pad loading life.
REFERENCES:
patent: 3279605 (1966-10-01), Shepherd
patent: 3356218 (1967-12-01), Grudoski
patent: 3849312 (1974-11-01), Wecker, Sr.
patent: 3880757 (1975-04-01), Thomason
patent: 3968741 (1976-07-01), Hunt
patent: 4043916 (1977-08-01), Wecker, Sr.
patent: 4112129 (1978-09-01), Duensing et al.
patent: 4113623 (1978-09-01), Koether
patent: 4250039 (1981-02-01), Cozzi et al.
patent: 4282094 (1981-08-01), Mitchell
patent: 4402827 (1983-09-01), Joseph
patent: 4444095 (1984-04-01), Anetsberger et al.
patent: 4517082 (1985-05-01), Prudhomme
patent: 4591434 (1986-05-01), Prudhomme
patent: 4604200 (1986-08-01), Machart, Jr.
patent: 4618419 (1986-10-01), Hollinshead et al.
patent: 4657673 (1987-04-01), Kessler
patent: 4668390 (1987-05-01), Hurley et al.
patent: 4702827 (1987-10-01), Wenzel
patent: 4764384 (1988-08-01), Gyann
patent: 4768426 (1988-09-01), Nett
patent: 4804466 (1989-02-01), Cooper et al.
patent: 4826590 (1989-05-01), Turman
patent: 4828694 (1989-05-01), Leason
patent: 4959144 (1990-09-01), Bernard et al.
patent: 4988440 (1991-01-01), Bernard et al.
patent: 5062968 (1991-11-01), Warning
patent: 5075000 (1991-12-01), Bernard et al.
patent: 5143604 (1992-09-01), Bernard et al.
patent: 5149449 (1992-09-01), Strid et al.
Zhang, W. B. and Addis, P. B., "Evaluation of Frying Oil Filtration Systems", Journal of Food Science, 57(3):651-654, mailed Jun. 4, 1992.
Burklund Sidney A.
Olson Terry D.
Dawson Robert A.
Filtercorp Partners L.P.
Walker W. L.
LandOfFree
Method of filtering using a double-density commercial filtering does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method of filtering using a double-density commercial filtering , we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method of filtering using a double-density commercial filtering will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-403972