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US 2004/0023783 A1Published application
Centrifuge
AssigneeWestfalia Separator AG
InventorWilli Niemerg
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AssigneeWestfalia Separator AG
InventorWilli Niemerg
Estimating the term…
The invention relates to a centrifuge (or a separator) comprising a centrifugal drum (1) and a spring-loaded piston valve (5) that is guided in a drum bottom part (2) so as to be axially displaceable. Said piston valve (5) is maintained in a closed position by springs (7) that are supported on the drum bottom part (2), in which position solid discharge openings (6) provided in the jacket area (2a) of the drum bottom part (2f) are closed. A pressure is generated when a control medium is fed to an opening chamber (8) between the piston valve (5) and the centrifuge chamber bottom (3), which pressure overcomes the spring forces so that the piston valve (5) is displaced axially to such an extent that the solid discharge openings (6) are released. The springs (7) are produced from a non-alloy spring steel and are fully enclosed by cylinders (7) from a corrosion-resistant material. The invention allows for minimum dimensions of the springs (7) and their integration into the entire construction, high spring and thus closing forces and at the same times guarantees a complete insulation of the spring chamber relative to the sterile chamber.
Centrifuge having a centrifugal drum which comprises a drum bottom part, a centrifuge chamber bottom, a drum cover and a piston valve, the piston valve being axially movably disposed in the drum bottom part as well as being held by springs supported at the drum bottom part in a closed position for solid-matter discharge openings provided in the jacket area of the drum bottom part, and being movable by a control medium, which can be introduced into an opening chamber arranged between the piston valve, on the one side, and the centrifuge chamber bottom, on the other side, against the effect of the springs into an opening position for the solid-matter discharge openings,
Centrifuge according to one or several of the preceding claims,
Dependencies are inferred from the claim text.