Liquid purification or separation – Filter – Movable medium
Patent
1983-09-12
1986-02-11
Adee, John
Liquid purification or separation
Filter
Movable medium
209406, 210541, B04B 300
Patent
active
045697612
ABSTRACT:
In a centrifuge sieve drum, wherein the inner surface of the drum is lined with a support arrangement carrying wear-resistant sieve or screen rods, there is obtained a compensation of the different thermal expansions of the sieve rods and the support arrangement in that, the sieve rods comprise an axially extending web and the support arrangement comprises identically shaped grooves or slots engaged by the webs. Each web and its associated groove or slot may be designed, for example, as a dovetail guide. Thus, while the sieve rods may expand or contract in longitudinal direction or in the direction of the lengthwise axis of the drum, the sieve rods are, however, immovable in radial direction and in circumferential direction. Such a support arrangement can be efficiently manufactured by simultaneously cutting, such as by milling the grooves or slots and sieve openings or slots in a convex outer surface using a triple cutter, such as a milling cutter, and by subsequently bending the supporting arrangement to form a concave surface and inserting the same into the drum.
REFERENCES:
patent: 4430221 (1984-02-01), Spiewok
Websters New World Dictionary World Pub. Co., "Dovetail", 1966.
Fenyes Jozsef
Spiewok Leonhard
Adee John
Kleeman Werner W.
Sulzer-Escher Wyss AG
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