| 摘要 |
The present invention relates to a device for crushing a hydrous polymer jelly, comprising two rolls ( 11,12 ) located axially parallel and rotating in opposite directions between which a nip ( 13 ) for the passage of the polymer gel ( 10 ) is formed. In order to achieve a more uniform and cheaper size reduction of polymer gels, the present invention proposes to form one roll as a cutting roll ( 11 ) which is provided with at least one axially extending cross cutting element ( 15 ) having a cutting edge ( 17 ) and with a radially extending longitudinal cutting element ( 14 ) provided with a cutting edge ( 18 ) which runs around it, and to form the other roll as a back-up roll ( 12 ).
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