Extrusion devices

Details Extrusion devices Extrusion devices

B - Operations, Transporting

30

B

100/8

B30B 9/12 (2006.01) B30B 9/26 (2006.01) D21F 1/66 (2006.01)

Patent

CA 1220975

- 19 - ABSTRACT Improvements in or relating to Extrusion Devices. An extrusion device used for extracting liquids from liquid- solid mixtures and which operates on the separation gap principle, comprising a screw rotating in a barrel. Pins project radially inwardly into the barrel. The separation gaps and the internal lining of the barrel are maintained in an operationally efficient state for long periods of time even if highly abrasive and/or corrosive mixtures are being treated. The internal surface of the hollow barrel is lined with individual, interchangeable segments which are peripherally staggered relative to one another in the form of a wall, end face or tip portions are located on the end portion of the pins. Moreover, the screw comprises a mandrel on which are mounted individual screw flight portions. Between the flight portions, ring portions are mounted on the mandrel. These ring portions and the tip portions mounted on the pins define the separation gaps. Accordingly, those parts which are liable to wear or corrode can be readily replaced.

450124

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