摘要:
A single-screw extrusion desulfurization and post-processing system and a method for preparing reclaimed rubber. The single-screw extrusion desulfurization and post-processing system comprises: a single-screw desulfurization device, a single-screw post-processing device and a closed connection device for connecting the single-screw desulfurization device and the single-screw post-processing device, the single-screw post-processing device includes a post-processing feeding unit and a post-processing unit which are connected with each other, and a post-processing screw running through the post-processing feeding unit and the post-processing unit.
摘要:
A mixing section for an extrusion screw has an inlet end and an outlet end as well as alternating wiping lands and barrier lands. The wiping lands have a greater helix angle than the barrier lands. The wiping lands and the barrier lands define inlet channels which narrow toward the outlet end and outlet channels which widen toward the outlet end. A helical pattern of mixing channels is cut into the wiping lands and the barrier lands. The mixing channels may be oriented generally at approximately right angles to the wiping lands and the barrier lands. A portion of the extrudate encounters the inside wall surfaces of the mixing channels and changes direction which improves the mixing of the extrudate.
摘要:
Ein Extruder weist Knetblöcke (50 bis 53) auf, deren Kurvenscheiben (50a bis 50e) einen schmalen Kamm (5) aufweisen, der die Innenwand des Gehäuses im wesentlichen dicht abstreift, und wenigstens einen weiteren, breiten Kamm (6) im Abstand von der Gehäusewand, wobei die Gänge (58) jedes Knetblocks (50, 51) durch sich abwechselnde breite Kämme (6) und schmale Kämme (5) gebildet werden.
摘要:
The invention relates to a single-screw extruder, comprising a grooved infeed system, a cylinder, and an extruder screw rotatably supported in the cylinder. The extruder screw has a softening zone (10), a main plasticizing zone (14), and a post-plasticizing zone and is at least double-threaded (18, 20) in the area of the main plasticizing zone (14). According to the invention, in order to provide such a single-screw extruder that enables improved melting effect and also increased throughput, reduced melting temperature, and improved pressure build-up capability, the cylinder at least partially has at least one groove extending substantially in the longitudinal direction in the region of the main plasticizing zone (14).