Screen bottom system

Details Screen bottom system Screen bottom system

1981-03-09

1983-05-17

Knowles, Allen N.

Classifying, separating, and assorting solids

Sifting

Elements

209405, 209931, B07B 149

Patent

active

043839193

ABSTRACT:
In this screening bottom, the screening elements which are mounted on a support structure are provided with an exchangeable and automatically clamped rubber plate acting as a wear-and-tear resistant layer. Beneath the rubber plate, a reinforcing structure is provided consisting of plastic ribs and/or a reinforced structure which is imbedded in a plastic material, as well as clamping elements. The reinforced structure and the clamping elements constitute a unitary grid which is undetachably coupled with the rubber plate. Thereby, it is possible to transfer the advantages from the unit construction assembly technique to screening bottoms with associated screening elements which basically are composed of rubber with a high abrasion resistance characteristic. No complicated and expensive vulcanization molds and devices are required for making the screening elements. The molding tools which are already available for making plastic screening elements can be partially used.

REFERENCES:
patent: 3980555 (1976-09-01), Freissle
patent: 4120784 (1978-10-01), Hassall
patent: 4219412 (1980-08-01), Hassall

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