| 摘要 |
The invention relates to a screw compressor ( 1 ) for compressing matter ( 2 ) that passes through the screw compressor ( 1 ). The screw compressor comprises a screw ( 3 ) having an outer thread ( 4 ) with a pitch that decreases in the longitudinal direction of the screw ( 3 ), and a casing 5 that encases the screw ( 3 ). The casing has an inner side ( 6 ) that faces the thread ( 4 ) of the screw ( 3 ) so that matter may be passed ahead through the screw compressor ( 1 ) between the screw ( 3 ) and the inner side of the casing ( 5 ) in a direction from an inlet end ( 7 ) of the screw compressor, where the pitch of the screw ( 3 ) thread ( 4 ) is greater, to an outlet end ( 8 ) of the crew compressor ( 1 ), where the pitch of the screw ( 3 ) thread ( 4 ) is smaller. Appliances are arranged on the inner side of the casing to prevent matter that passes through the screw compressor from rotating along with the screw ( 3 ). Inside the screw ( 3 ), a conduit ( 10 ) is arranged for introduction of liquid. The invention also relates to a method for compressing and dewatering.
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