Title:
SCREW SPINDLE PUMP
Document Type and Number:
Japanese Patent JP2023088303
Kind Code:
A
Abstract:
To provide a screw spindle pump with an improved connection device.SOLUTION: A drive spindle (6) comprises a cylindrical spindle core, and at least two spindle profiles rotating around the spindle core, where in a recess part axially regulating a boundary by a flat bottom surface (15) in a front surface of the drive spindle (6), and made confluent in a state where two profile valley parts between the two spindle profiles are offset by 180 degrees, a connection element (10) is rounded so as to correspond to the shape of the spindle core. A diameter (DB) of the connection element (10) corresponds at most to a spindle core diameter (DK) or is smaller than the spindle core diameter (DK) within a region on the rounded element side.SELECTED DRAWING: Figure 3
Inventors:
JUERGEN METZ
KRISTIN LISSEK
FLORIAN POPP
KRISTIN LISSEK
FLORIAN POPP
Application Number:
JP2022197444A
Publication Date:
June 26, 2023
Filing Date:
December 09, 2022
Export Citation:
Assignee:
LEISTRITZ PUMPEN GMBH
International Classes:
F04C15/00; F04C2/16
Attorney, Agent or Firm:
Patent Attorney Corporation ARK Office