The Goodyear & Tire Rubber Company

Other

James C Rine

Clifford J Ahola

James J Tloczynski

Melvin Budzol

Truman D Parkinson

Ronald L Brubaker

Frederick P Boyle

John C Byrne

Nicholas D Rosenstein

James J Tloczysnki

A refining disk is provided for use in various kinds of refining apparatus. The refining apparatus comprises juxtaposed disks with refining surfaces on the opposed faces, one disk rotating relatively to the other disk to work on the material therebetween. A typical refiner is disclosed in U.S. Pat. No. 3,049,307; however, the invention is applicable to various types of refiners including single rotating disk refiners and counter-rotating disk machines. Disks normally are cast which results in relatively soft low wear resistance that wear out and must be replaced regularly. The disks of this invention are constructed of the hardest wear resistant materials known including metal carbides.

Refining disk

A comminuting apparatus is provided for use in an impact pulverizer. The comminuting apparatus includes a cover defining a grinding chamber and a support frame connected to the cover and defining a discharge space. A series of spaced-apart bars is circumferentially angled about a generally cylindrical path positioned between the grinding chamber and the discharge space. Each pair of bars in the series of bars defines a material discharge gap and the series of bars defines a series of spaced-apart material discharge gaps between the bars. Each gap defines a flow path having an inner side in fluid communication with the grinding chamber and an outer side in fluid communication with the discharge space. Each flow path extends in a direction generally parallel to a tangent to the cylindrical path defined at the inner side of each respective flow path.

Comminuting apparatus with tangentially directed discharge

This invention provides a mounting method for abrasive grinding wheels in disc or attrition mills operated at high speeds. Stone grinding discs are placed under a compressive load at mounting sufficient to counter tension loads during use. The compression loading is preferably provided by taper elements incorporating the wheel itself or by elements other than the wheel, such as fluid actuated clamps and elements external to the wheel that induce compression.

Method of mounting stones in disc or attrition mills

A pellet feeder (A) feeds pellets of vulcanized rubber or other materials and water or another fluid at controlled rates into a mixing tank (30). An agitator (32) mixes the pellets and fluid into a slurry. The slurry is pumped from the mixing tank to a mill (C) by a pump (34). The mill has a receiving region (70) defined between a stator (48) and a rotor (68) for receiving the slurry. The stator and rotor define a peripheral grinding zone (72) around the slurry receiving region. An impeller (74) has vanes which extend from the upper surface of the rotor to an abrasive surface (82) of the stator such that the impeller vanes are ground at the same rate as the stator and rotor wear to maintain a fluid seal around the impeller blades. Fluid cylinders (50, 52) maintain a constant pressure between the stator and rotor. The stator has a plurality of recesses (86, 86') which preferably have downstream extending relief areas (214). The rotor also has a plurality of recesses ( 104, 104') which have tapered portions along a downstream edge, such as sloping relief areas (220), for wedging the pellets into the grinding zone. The rotor and stator are made of a vitreous bonded stone having a median pore size of about 50 microns.

Growing community of inventors

Lake City, FL, United States of America

James C Rine