A self-cleaning stationary basket strainer.

摘要

A self-cleaning stationary basket strainer has a housing(3) with an inlet(21) adjacent the top and an outlet(23) adjacent the bottom, with a stationary strainer basket(25) contained therein spaced from the wall(5) of the housing. A flush discharge opening(11) and a backwash discharge opening(13) are provided in the closed bottom(9) of the housing. A hollow backwash conduit(51) is provided adjacent the inner surface(35) of the strainer basket(25), adapted to move about the inner periphery thereof, and has a passage(59) in the wall thereof communicating with a chamber(55) in the conduit(51). A discharge section(57) on the hollow backwash conduit(51) communicates with the backwash discharge opening(13) in the housing, the backwash discharge opening being sealable(17) when not in use. A scraper blade(61) and extension member(63) are provided on the hollow backwash conduit forming a channel(65) which communicates with the passage(59). A rotatable brush(89) may also be used which moves about the inner periphery(35) of the strainer basket(25) and brushes the inner surface of the strainer basket(25). <IMAGE>