Filter and hydraulic mixing assembly for water treatment

Details Filter and hydraulic mixing assembly for water treatment Filter and hydraulic mixing assembly for water treatment

1997-10-28

1999-09-14

Cintins, Ivars

Liquid purification or separation

Flow, fluid pressure or material level, responsive

Check valve

210239, 210279, 210288, 210289, B01D 2446

Patent

active

059518553

ABSTRACT:
A filter and hydraulic mixing assembly for a water treatment system. The assembly includes two circulation tubes disposed alongside a center tube. During a backwash cycle fluid is conveyed through the center tube to a housing member where it is discharged immediately below the open bottom ends of the two circulation tubes thereby conveying media from the surrounding tank upwards through the circulation tubes. A cap member is fitted over the upper ends of the circulation tubes within the tank and direct the media being discharged from the circulation tubes into a downward spiraling helical flow pattern which provides enhanced agitation and lifting of the media bed. Discrete filter segments are selectively attachable to the housing member and interchanging the discrete filter segments permits the total filter slot area of the assembly to be adjusted and also permits the filter slot size to be altered. The filter segments are color coded, with each separate filter size having a different corresponding color. The color coding scheme provides an efficient and effective mechanism for preventing the inadvertent mixing of filter segments having different slot sizes.

REFERENCES:
patent: 1692939 (1928-11-01), Johnson
patent: 2087442 (1937-07-01), Nack
patent: 2803347 (1957-08-01), Whitlock, Jr.
patent: 3395099 (1968-07-01), Johnson
patent: 3455458 (1969-07-01), Johnson
patent: 3557955 (1971-01-01), Hirs
patent: 4624782 (1986-11-01), Gould
patent: 4814074 (1989-03-01), Auchincloss
patent: 4871463 (1989-10-01), Taylor et al.
patent: 5277802 (1994-01-01), Goodwin
patent: 5472609 (1995-12-01), Field

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