Rotary processors and seals

B - Operations – Transporting – 01 – F

Patent

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B01F 7/00 (2006.01) B01F 5/00 (2006.01)

Patent

CA 1237425

ABSTRACT OF THE DISCLOSURE A rotary processor comprising a rotatable element carrying at least two annular channels and a stationary element providing a coaxial closure surface spaced apart from the rotor surface by a close clearance and operationally arranged with the channels to provide at least first and second enclosed processing passages. The first processing passage includes an inlet associa- ted with the stationary element for receiving viscous material to be processed in the passage. The second processing passage has an outlet associated with the stationary element for discharging processed material from the passage. Each passage includes a blocking member associated with the stationary element which provides an end wall surface for the passage. The blocking members are arranged and adapted so that material fed to the passages can be carried forward by the rotatable channel walls to the end wall surfaces where movement of the carried forward material is blocked and the blocked material is collected for dis- charge from the passages. A material transfer groove is formed in the closure surface of the stationary element and positioned near the end wall surface of the first passage to interconnect the first and second processing passages so that material blocked and collected in the first passage can be transferred to the second passage. Additionally, the processor is operated under conditions which provide a significant pressure differential between the first and second passages.

462780

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