SCREW EXTRUDER Russian patent published in 2022 - IPC B29C48/00 B29C48/92 

FIELD: materials extrusion.

SUBSTANCE: invention relates to the extrusion of materials and can be used, for example, in the processing of various types of minerals, mainly ores, as well as all kinds of technogenic raw materials. The screw extruder contains a bearing assembly, a loading funnel, a screw chamber housing, a drive, a molding head, a screw with turns made in the loading and transportation zone with the possibility of axial movement. Wherein a segmental washer is additionally installed in the extruder, which is rigidly fixed inside the forming part of the nozzle. At the same time, segmental holes are made in it, the cross section of which decreases towards unloading, and are separated by jumpers. The segmental washer is made with a cylindrical thickening, which is located on the side of the forming part of the nozzle, in which the sliding bearing is installed, on the unloading end of the body, the nozzle is coaxially attached, which consists of two parts of the forming and unloading, which are connected to each other with the possibility of removal, the forming part is made in the form of a truncated cone, and the unloading part - in the form of a cylinder of non-conductive material. The magnetron housing is installed on the frame with the possibility of removal, a through hole is made in it, in which a non-conductive branch pipe is installed, which is fixed to the walls of the housing with the possibility of removal, a nozzle made of a conductive material is attached to the outside of the housing, and the unloading part of the nozzle is installed in a non-conductive pipe and nozzle.

EFFECT: increasing the reliability and versatility of the extruder, which makes it possible to process also hard materials, such as ores of minerals.

1 cl, 3 dwg