Liquid purification or separation – Plural chambers with movement of granules therebetween
Patent
1982-04-26
1983-11-01
Cintins, Ivars C.
Liquid purification or separation
Plural chambers with movement of granules therebetween
210274, 2105121, B01D 2938
Patent
active
044129190
ABSTRACT:
A water purification device wherein a separation tank is placed in a space of a filter tank above a mass of granular filter material, the separation tank having an inlet through which washing water which has been supplied into the filter tank for washing the filter material and the entrained granular filter material is supplied into the separation tank during washing of the filter material. The water and entrained filter material are caused to descend in a vortex flow and the granular filter material is separated and collects at an outlet at the bottom of the separation tank which is closed by a cover member. A rod- or cylinder-like member is mounted generally along the central vertical axis of the separation tank. The vortex flow of the washing water is reversed and caused to flow in a gyratory flow along the outer peripheral surface of the rod-like member and to be discharged from the filter tank through a water outlet. The granular filter material entrained in the contaminated washing water is separated by centrifugal force in the vortex flow and the reversed gyratory flow and collected at the bottom of the separation tank bottom and eventually returned to the filter tank. The loss of the filter material is thus prevented during washing of the filter material.
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Cintins Ivars C.
Takara Kogyo Co., Ltd.
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