| 摘要 |
NEW ABSTRACT A screw press is having a radial gate valve and supported longitudinally-extending screw shaft. The screw shaft includes a central shaft and helical threads which is driven by a drive package. The screw shaft is encapsulated within a housing including a hopper portion, transition portion, bearing portion and screen portion. A transition portion includes a radial gate valve which is angled such that the radial gate valve's axis of rotation is substantially parallel to the screw shaft threads. In addition, the screw shaft is supported by a first support at its proximal extremity and a second support towards its distal extremity. The support at its distal extremity includes one or more wear bearings which concentrically support the threads of the screw shaft in a frictional engagement manner. The angle of the radial gate valve with respect to the screw presses housing provides for greater pressure build up within the screen portion. Moreover, the use of wear bearings reduces wear to the housing and screen due to metal on metal contact with the screw threads and also provid for increased efficiency of the screw press operation.
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