Fibering system and apparatus
AssigneeBiocel Corporation
InventorRonald A. Penque
Life of this patent
Estimating the term…
Abstract
A pulper for reclaiming cellulosic fiber from scrap paper includes a high-speed pressure-wave-generator impeller with individually hinged arms and a movable foraminous filter in the form of a wire screen that is flexibly mounted. A plurality of impellers and filters are used in a multistage pulper. The pulping energy is directed through the movable filter to isolate the energy source from contact with the fibers. In multistage fibering, filtering is performed between each stage and with successively finer filtering.
Claims31
In a pulper apparatus for defibering cellulosic material in a liquid mixture comprising in combination:
- a container,
- inlet and outlet openings in the container for respectively introducing liquid and scrap waste to be processed and to permit discharge of cellulosic fibers;
- means for generating pressure waves in said container;
- and a movable diaphragm filter in the container restricting access of inputted material to said outlet opening and allowing passage therethrough of fibered pulp:
- said filter being movable in response to pressure waves produced by said generating means for removal of obstructing cellulosic materials therefrom.
In an apparatus for defibering cellulosic material in a mixture of cellulosic scrap and a liquid comprising in combination:
- a container, an impeller assembly including impellers attached to a shaft within said container, and inlet and outlet openings in the container for respectively introducing liquid and scrap waste to be processed and to permit discharge of cellulosic fibers, the improvement of:
- said impeller assembly comprising a rotor hub, a plurality of elongated impeller blades individually and hingedly attached at one end to said rotor hub, said hub being rigidly and concentrically fastened to a rotating shaft and the hinged axes of said impeller blades being generally transverse to the rotating axis of said shaft, so that centrifugal forces extend said blades radially from said rotor hub during periods of shaft rotation at operational speeds.
A process of defibering cellulosic material in medium comprising a mixture of a liquid and said cellulosic materials to be defibered, said process comprising the steps of:
- impelling a liquid so as to propagate pressure waves through a moveable diaphragm membrane in contact with said liquid to said medium on the other side of said diaphragm so that said cellulosic material is defibered by said pressure waves.
A process of defibering cellulosic material in a medium comprising:
- impelling a liquid in a plurality of stages to defiber cellulosic material in each of said stages;
- and passing and filtering defibered material from a first one of said stages to the next thereof.
Dependencies are inferred from the claim text.