Separator

US5018971A · kind A · utility

Inventors

• Werner Trawoger · Telfs, AT
• Bruno Pregenzer · Telfs, AT

Key dates

• Filing date: Jun 22, 1989
• Grant date: May 28, 1991
• Expiry date: Jun 22, 2009

Classification

• Technology area (CPC A): Human Necessities
• CPC primary: A61C17/065
• WIPO field: Medical technology
• WIPO sector: Instruments

Abstract

For the separation of a mixture of solids and liquids, which is produced in dental suction units, a separator is used which comprises a housing in which a mixture inlet, a liquid collecting chamber and a lower sedimentation chamber are provided. A drain opening for clarified liquid is associated with the liquid collecting chamber. The drain opening is arranged above a maximum settling level of the solids, and a first section of a drain line extends vertically upwards from the drain opening. To eliminate disturbance of the settling of solids in the sedimentation chamber to the greatest possible extent, the collected clarified liquid is discharged in each case, when a predetermined flood level of the first section of the drain line is reached. The sedimentation chamber is formed in a removable collector bowl so that the collected solids can be discharged. The separator housing may further be provided with an air separator chamber for separating the suction air from the dental mixture, and a solid bowl centrifuge is preferably provided which separates solid residues from the clarified liquid which are transferred into the collector bowl.