Importance

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Abstract

An evertable drum centrifuge has a drum with a generally cylindrical and perforate outer wall and having an axially forwardly open front end. An end wall of the drum can move axially between a closed position fitting in the front outer-wall end and an open position spaced axially forward of the outer wall and is centrally formed with a fill opening. An annular liner of a flexible foraminous filter medium has a front edge attached to the outer-wall end and a back edge attached to a rim of extension structure fixed on the end wall. When the end wall move between the closed and open positions, the liner moves from a normal position inside the drum and extending backward from the front end to the rim to an everted position substantially outside the drum and extending forward in the solids compartment from the front end to the rim. An axially displaceable fill tube carries an axially nondisplaceable fill head complementarily engageable in the fill opening and having an annular seal engageable with the fill tube. A bearing supports the fill head on the fill tube for rotation thereon about the axis so that, when the end wall moves axially with the fill head engaged in the fill opening, the fill tube moves axially jointly with the end wall. A suspension is supplied through the fill tube in the closed position of the end wall and normal position of the fill tube to the interior of the drum.

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First Claim