Bruce Crossley - Pittsfield MA Ronald DeFoe - Becket MA
Assignee:
Beloit Technologies, Inc. - Wilmington DE
International Classification:
B03D 114
US Classification:
209211
Abstract:
An improved hydrocyclone and method of operating for centrifugal cleaning of pulp for papermaking wherein the hydrocyclone has a plurality of inserts each with openings of different sizes for selectively and interchangeably inserting into a stock entry opening and into a vortex finding outlet opening to adjust capacity and cleaning efficiency. In one form the inserts each can be changed by tubes of different openings which are installed into the inserts changing the opening sizes. In another form, the inserts are threadedly engaged with bosses or are adhered or frictionally fit into the bosses.
Edward C. Kirchner - Pittsfield MA Ronald J. DeFoe - Becket MA
Assignee:
Beloit Corporation - Beloit WI
International Classification:
B02C 714
US Classification:
2412613
Abstract:
An apparatus for refining fibrous materials such as stock suspensions for papermaking which includes a housing, an inlet and outlet in said housing for receiving and discharging the treated materials, a shaft rotatable in said housing, a plurality of rotating refiner disks spaced along the shaft and an additional plurality of refiner disks interspersed with the rotor disks and providing therewith refining gaps through which the stock suspension passes. The other refiner disks can be either stationary or counter-rotating with respect to the rotor disks. The two sets of refiner disks are supported by means of axially flexible membranes. The present invention provides refiner disks which have undercut portions in the surfaces adjacent to the flexible annular membranes to increase the axial flexibility of the membranes.