SEPARATION DEVICE FOR REDUCED POLYMER WASTES Russian patent published in 2018 - IPC B07B9/00 

FIELD: machine engineering.

SUBSTANCE: invention refers to the separation devices for plastic scrap, which is a polymer waste of different textures with different density and aerodynamic characteristics, and may be used for separation of reduced waste generated in the processing of PET bottles. The separation device for reduced polymer waste, containing two fractions with different specific gravity, contains a separation chamber with one inlet port for supplying a stream of reduced wastes placed in the upper part of mentioned chamber, and at least two outlet ports, one of which is intended for the reception of heavy fractions and is made in the lower part of the chamber and placed directly under the inlet port and another for the reception of light fraction, a cyclone for separating the air from the stream of reduced waste, the outlet branch of which is located above the mentioned separation chamber and a blowing fan for supplying air stream with reduced waste into the cyclone. The device is provided with at least one air blower connected by an air duct with an inlet port formed in the side wall of the separation chamber to form a horizontally directed working air flow in the upper part of the latter, in the zone of the inlet port, and the distributor of a flow of the reduced waste which is unsightly adjoining the outlet branch pipe of the cyclone, connecting it to an inlet port of the separation chamber. The inlet port of the separation chamber is made in its upper wall, has a slot-like shape and is located along the side walls of the separation chamber to form two crossing streams of air in the separation chamber - the working air is being fed horizontally through the mentioned inlet port and the second one is carrying the above-mentioned reduced waste coming from above through the inlet port to the separation chamber. The outlet port for the heavy fraction is equipped with a diffuser expanding towards the inlet port. The outlet port for the light fraction is made in the lower part of the chamber and is located behind the outlet port for the heavy fraction in the direction of the horizontal air flow in the separation chamber.

EFFECT: increase separation efficiency, and increase its productivity.

3 cl, 2 dwg