Pelletizing Machine Relates To A Pelletizing Roller
Pelletizing machine relates to a pelletizing roller
The pelletizing machine relates to a pelletizing roller of the kind which engages with the inner peripheral surface of an annular die having radial holes therethrough whereby a pelletizable material such as animal foodstuff, for example, is forced through said holes as the die is rotated.
A pelletizing roller of the kind referred to is conventionally comprised by a roller shell mounted on a shaft by means of two axially spaced roller bearing assemblies held in spaced relationship by means of one or more circlips, which engage a groove machined in the inner periphery of the roller shell.
It is an object of the present single screw extruder to provide a pelletizing roller which overcomes the disadvantage aforesaid.
According to the present twin screw extruder, a pelletizing roller of the kind referred to and comprised by a roller shell mounted on a shaft by means of two axially spaced roller bearing arrangements each comprised by an inner race, an outer race and a plurality of rollers therebetween, is characterised by the provision of spacing means located between said bearing arrangements and comprised by a ring formed in parts to permit its location in a groove on the inner periphery of the roller shell and means whereby the parts of the ring are held in position when the pelletizing roller is fully assembled.
The extruder machine will be further apparent from the following description with reference to the figures of the accompanying drawings which show, by way of example only, three forms of pelletizing roller embodying the invention .
Of the drawings:
FIG. 1 shows a diagrammatic cross-section through a pelletizing machine having three pelletizing rollers mounted within the annular die of the machine;
FIG. 2 shows an axial section through one of the pelletizing rollers of FIG. 1;
FIG. 3 shows a plan view of the spacing member between the roller bearing arrangements of the roller of FIG. 2;
FIG. 4 shows a cross-section through the spacing member on the line IV--IV of FIG. 3;
FIG. 5 shows a fragmentary cross-section through a second form of pelletizing machine;
AND FIG. 6 shows a fragmentary cross-section through a third form of pelletizing roller.