Double-bladed worm shaft for a mixing and kneading machine, wherein each of the blade elements has an elliptic, oval, or bioconvex outer peripheral surface in the top view

US11504680B2 · kind B2 · utility

Assignee

• BUSS AG · CH

Inventors

• Martin Schötzau · Augst, CH
• Wolfgang Walter · Heidelberg, DE

Key dates

• Filing date: Oct 2, 2018
• Grant date: Nov 22, 2022
• Expiry date: Oct 17, 2038

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B01F2215/0422
• WIPO field: Other special machines
• WIPO sector: Mechanical engineering

Abstract

A worm shaft for a mixing and kneading machine particularly for continual processing having a shaft bar, on the circumferential surface of which blade elements are arranged to be spaced apart from one another extending outwards from the circumferential surface of the shaft bar, wherein the blade elements are arranged on the circumferential surface of the shaft bar, at least in one section extending in the axial direction of the worm shaft, in two rows extending in the axial direction of the worm shaft, and wherein each of the blade elements of the at least one section extending in the axial direction of the worm shaft has an elliptic, oval, or biconvex outer peripheral surface in the top view.