摘要:
A granulating machine of substantially modular construction. The hopper-input module includes baffles to prevent flyback of the material being granulated. This module is mounted pivotally at two opposite ends to a cutting module permitting it to pivot downward or upward away from the cutting module for easy access to the cutting rotor for maintenance or cleaning, for example. The cutting module includes a rotor of essentially tubular construction on which rotor-knives are mounted. The rotor itself is mounted on a base or frame to which multi-edged, stationary bed-knives are mounted without using bolts or screws. The multiedged knives are capable of reorientation as the cutting edges become successively dulled. There is also a screen-mount module pivotally secured to the cutting module which includes a bendfree screen held in a cradle and clamped at two opposite ends by pressure elements bearing on it. The pivoting screen cradle permits access to the screen from above and to the under side of the rotor from below. Other features are described below.
摘要:
A METHOD AND APPARATUS FOR EFFECTING EFFICIENT MASS CONTACT BETWEEN TWO MEDIA OF DIFFERENT DENSITIES IS DISCLOSED. THE ONE OF SAID MEDIA THAT IS OF LESSER DENSITY IS CAUSED TO OBTAIN A VORTICAL FLOW PATTERN BY MEANS OF A CIRCULAR VANED CHAMBER. THE SECOND MEDIUM, THE ONE HAVING THE GREATER DENSITY, IS ENTRAINED IN SAID FLOW PATTERN IN PARTICULATE FORM, AND IS THEREBY CAUSED TO FORM A DENSE CLOUD OF PARTICLES WITHIN SAID VORTICAL FLOW. AN UPPER LIMIT ON PARTICLE SIZE WITHIN THE CLOUD IS ESTABLISHED BY THE DIAMETER OF THE CHAMBER, AND BY AN APERTURED WALL CONSTRUCTION THEREFOR, WHEREBY OVERSIZE PARTICLES ARE CAUSED TO MIGRATE OUTWARDLY FROM THE CHAMBER UNDER THE INFLUENCE OF CENTRIFUGAL FORCE.
摘要:
A seal for a rotating shaft comprises a generally annular body fixed to the shaft which has a plurality of concentric circular projections which extend generally parallel to the axis of the shaft. A second, generally annular member made of a heatresistant yieldable material such as sintered metallic fibers includes a plurality of concentric circular grooves formed therein which mate with the corresponding projections of the first member. The method of making the seal is to bring the annular member having the projections into compressive contact with a generally annular blank of the yieldable material so that the projections form the corresponding mating grooves in the annular blank.