US 12,078,166 B2
Screw spindle pump
Jürgen Metz, Feucht (DE); Kristin Lissek, Fürth (DE); and Florian Popp, Nuremberg (DE)
Assigned to LEISTRITZ PUMPEN GMBH, Nuremberg (DE)
Filed by LEISTRITZ PUMPEN GMBH, Nuremberg (DE)
Filed on Dec. 9, 2022, as Appl. No. 18/078,274.
Claims priority of application No. 10 2021 133 114.5 (DE), filed on Dec. 14, 2021.
Prior Publication US 2023/0184249 A1, Jun. 15, 2023
Int. Cl. F04C 15/06 (2006.01); F01C 21/10 (2006.01); F04C 2/08 (2006.01); F04C 2/16 (2006.01)
CPC F04C 15/06 (2013.01) [F01C 21/108 (2013.01); F04C 2/086 (2013.01); F04C 2/16 (2013.01)] 19 Claims
OG exemplary drawing
 
1. A screw spindle pump, comprising:
a spindle housing having spindle bores, a fluid inlet and a fluid outlet;
a drive spindle;
at least one running spindle that meshes with the drive spindle, the drive spindle and the at least one running spindle being arranged in the spindle bores;
an outer housing that encloses the spindle housing;
a cover component releasably attached axially onto the outer housing via a plurality of bores in the cover component and a corresponding plurality of threaded bores in the outer housing, the plurality of bores and the plurality of threaded bores being arranged so that the cover component is fastenable to the outer housing in a plurality of marked rotational positions with a first pitch;
an axial fluid inlet port provided on the cover component;
a lateral fluid outlet port provided on the cover component, wherein the fluid inlet port communicates with the fluid inlet of the spindle housing and the fluid outlet port communicates with the fluid outlet of the spindle housing;
a plurality of first fastening elements provided on the cover component or provided on or in the outer housing; and
second fastening elements provided on the spindle housing, said first fastening elements being configured to be engageable with the second fastening elements so that the spindle housing is fastenable to the cover component and/or in the outer housing in a plurality of marked rotational positions with a second pitch that is smaller than the first pitch, wherein the first fastening elements are positioned in a manner corresponding to the second pitch.