Grinding roller for the pressure comminution of granular...

B - Operations – Transporting – 02 – C

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B02C 4/30 (2006.01)

Patent

CA 2546556

The aim of the invention is to provide grinding rolls in particular for high- pressure roller mills or rolling presses for pressure grinding a granular material not only with a wear-resistant coating but also with a face armour plating in the area of the roller annular edge, which has a long service life due to the high wear resistance thereof and whose production and repair are, in general, relatively simple and inexpensive. For this purpose, the inventive face armour plating consists of a plurality of prefabricated hard bodies (12) which are circularly arranged side by side in such a way that the circular face edge of the roller is formed, said hard bodies (12) are disposed on said circular face edge of the roller in an annular circular shoulder (11) of a roll shell (10) such that said hard bodies (12) are placed axially and radially against said circular shoulder (11) of the roll shell (10) and are movably assembled with the roll shell.

L'objectif de l'invention est en particulier pour les cylindres de broyage de broyeur à cylindres à pression élevée ou de presses à rouleaux destinées au broyage par pression d'un matériau en grains, de créer non seulement un blindage superficiel, mais, dans la zone du bord de cylindre circulaire, également un blindage facial qui présente, grâce à sa résistance élevée à l'usure, une grande durabilité, et dans la fabrication et les réparations soit, cependant, relativement simple et, dans l'ensemble, économique. A cet effet, il est proposé, selon l'invention, que le blindage facial soit constitué d'une pluralité de corps durs (12) préfabriqués qui sont placés les uns à côté des autres en un cercle et forment le bord facial de cylindre circulaire, de disposer ces corps durs (12) sur le bord facial de cylindre dans un épaulement annulaire (11) circulaire de l'enveloppe de cylindre (10), de faire reposer les corps durs (12) tant axialement que radialement contre l'épaulement annulaire (11) de l'enveloppe de cylindre (10) et de les assembler de façon amovible avec l'enveloppe de cylindre (10).

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