Agitating – Rubber or heavy plastic working – Stirrer is through-pass screw conveyor
Patent
1977-07-27
1979-01-30
Jenkins, Robert W.
Agitating
Rubber or heavy plastic working
Stirrer is through-pass screw conveyor
425204, B01F 702, B29B 110
Patent
active
041369688
ABSTRACT:
An improved system for treating material proceeding continuously through a processing barrel having at least twin interconnected cylinders with saddle portions of generally V cross section at the points of interconnection of the cylinders. Twin rotating parallel mixer shafts, co-axially mounted in the cylinders, have radially interwiping screw or paddle elements between a material charging inlet and a material discharging outlet which are configured to wipe the cylinders including the saddle portions. Sets of paddle elements, each of which includes a cylinder closing paddle, are provided on the shafts at a flow control station between the inlet and outlet, and a movable flow-controlling saddle or valve element is mounted with relation to the cylinder closing paddle sets in a position such that it can be moved from an opened position to a position to restrict or block flow past the sets of paddle elements. A vacuum vent port can be provided for degassing or like purposes in the barrel casing at the flow control station in a position in which its relationship with the elements is such as to avoid the flow of product out the port.
REFERENCES:
patent: 2488189 (1949-11-01), Hanson
patent: 3114171 (1963-12-01), Colombo
patent: 3407438 (1968-10-01), Selbach
patent: 3630689 (1971-12-01), Wheeler
patent: 3779522 (1973-12-01), Loomans
Baker Perkins Inc.
Jenkins Robert W.
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