Screw pump
AssigneeLeistritz Pumpen GmbH
InventorsOliver Trossmann, Ralf Richter
Life of this patent
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Abstract
A screw pump with a housing; a housing cover; at least one idler screw held in a bore in the housing; and a bushing arranged on the housing cover with a receiving space bounded by a cylindrical flange, into which one end of the idler screw engages; wherein the bushing has an opening in its base, through which a fluid, supplied by a feed channel in the cover, can be supplied from the end opposite the idler screw under pressure to the end surface of the idler screw, wherein the bushing engages with radial play in a receptacle in the cover and comprises a radial flange, by which it is supported axially on the housing; and wherein at a least certain part of the ring-shaped flange of the bushing engages in the bore and is accommodated therein with play.
Claims19
A screw pump, comprising:
- a housing;
- a housing cover;
- at least one idler screw held in at least one bore in the housing;
- and at least one bushing arranged on the housing cover;
- each bushing of the at least one bushing has a receiving space bounded by a cylindrical flange, into which one end of one of the at least one idler screw engages, wherein each bushing of the at least one bushing has a base with an opening, through which a fluid supplied by a feed channel in the housing cover can be supplied from an opposite end of each idler screw of the at least one idler screw, relative to the base, under pressure to an end surface of each idler screw of the at least one idler screw within the receiving space, wherein each bushing of the at least one bushing has a radial flange that engages with radial play in a respective receptacle in the housing cover, the receptacle being open toward the housing, the radial flange being supported axially on the housing;
- and wherein the cylindrical flange of the bushing engages at least in sections in the bore and is accommodated therein with play so that the bushing floats.
Dependencies are inferred from the claim text.