Crusher

US11779932B2 · kind B2 · utility

Assignee

• Kleemann GmbH

Inventors

• Gerd Meyer · Leverkusen, DE
• Rainer Teichert · Haan, DE
• Jochen Meier · Westerburg, DE

Key dates

• Filing date: May 20, 2021
• Grant date: Oct 10, 2023
• Expiry date: Nov 27, 2041

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F16K17/082
• WIPO field: Chemical engineering
• WIPO sector: Chemistry

Abstract

The invention relates to a crusher, in particular a rotary impact crusher, cone crusher or jaw crusher, having a crusher unit (10), which has a movable first crusher body (11), in particular a rotor or a crusher jaw, wherein a second crusher body (14), in particular an impact rocker or a crusher jaw, is assigned to the first crusher body (11), wherein a crushing gap (15) is formed between the crusher bodies (11, 14), wherein an overload triggering device (30) is coupled to the first crusher body or to the second crusher body, which overload triggering device has a hydraulic cylinder (20) and which overload triggering device is designed to permit a motion of the coupled crusher body (11, 14) increasing the width of the crushing gap (15), wherein the hydraulic cylinder (20) has a pressure chamber (24), which is delimited by means of a piston (23), and wherein the overload triggering device (30) has a pressure valve (31) which, in its open position, establishes a fluid-conveying connection between the pressure chamber (24) and a low-pressure area and, in the closed valve position, blocks this connection. The productivity and operational safety of such a crusher can then be increased i…