| 摘要 |
<p>A centrifugal apparatus includes a centrifugal basket (28) having a supporting base structure spaced below its bottom wall (34) and fixed to the lower end of a vertical spindle (22) to rotate the basket inside a casing (40) surrounding the basket. The bottom wall of the basket has an opening (38) therein about the spindle for discharge of centrifuged solids downwardly and then radially outwardly through the space between the base structure and the bottom wall. A basket valve member (62) surrounds the spindle and is movable axially relative thereto between a position closing the basket opening and an open position spaced below the opening. A sleeve (72) surrounds the spindle and is joined at its lower end with the valve member to position the valve member in its closed and open positions and further has an outwardly open annular channel (89) at its upper end. A device (90) for operating the valve includes a forked lever (98) fulcrummed at one side of the spindle and having arms (100) straddling the spindle, each carrying on its end a roller (104) confined in the channel. A motive device (92) is mounted to one side of the spindle for displacing the lever and thereby moving the sleeve axially so as to dispose the valve member in either of its positions. </p> |
