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.
Questions and Answers
A Twin Screw Extruder not only shares the common operation principles with a single screw extruder: solid conveying, melting, admixture of pressurizing and pumping up, etc., but also owns its distinct characteristics. There are several factors that tackle the study of basic principles of co-rotating twin screw extruder, such as the late research of extrusion theory, various types, complex screw geometry, and complicated extruding process.
Accordingly, it is an object of the present invention to provide a rotary pelletizing machine which avoids the disadvantages of the prior art.
A centrifugal pelletizing machine has a hollow electrically and thermally conductive rotor with a series of orifices along its outer rim portion for centrifugally powering strands of heated thermoplastic material from a body of said material in a flowable state within the interior of the rotor.
According to the role type, extruder machine can be divided into non-continuous extrusion machine and continuous extrusion machine. Extruder is a kind of plastic machinery. Extruder the material flow under the direction of head and screw the angle between the centerline, it will head into the nose angle (angle 120o) and right-angle head. Head of the shell is bolted to the body, head mold core within the mold to sit
A pelletizing machine has a rotatable matrix disc, a plurality of vertically adjustable pressing rollers which control position of the upper and lower plungers, a drive for a height adjustment of the rollers, a housing accommodating the drive, and a bearing block supporting the pressing roller and releasably connected with the housing.
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In one embodiment of the present single screw extruder, the tiles are made of carbide or tungsten-carbide. In another preferred embodiment of the present twin screw extruder, the step of securing further comprises brazing, soldering, or gluing.
A kneading disc for a single screw extruder, the disc having a central longitudinal axis and comprising a kneading body of given width twin screw extruder, given material and having a region of maximum operating stress
A method of extending the life of a single screw extruder by affixing tiles of wear-resistant material along the crest of the twin screw extruder flighting threads, and optionally grinding the hardened material to remove any sharp edges.
Kneading disc for a single screw extruder.In order to improve the wear-resistance of highly stressed surfaces of a kneading disc in a helical twin screw extruder, the exposed tips of the kneading disc are provided with inserts of an extremely wear-resistant, hard material.
In a process for extruding a thermoplastic resin in a single screw extruder, a barrel of a twin screw extruder has a channel, a feed section and a first melt seal located after the feed section.
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