FIELD: transport.
SUBSTANCE: invention relates to transfer of materials, in particular, to sewage systems. Proposed method consists in arranging injection pump 4 in sewage transfer pipeline. Said pump has inlet and outlet branch pipes made up of Laval nozzles and arranged axially to make transfer channel. Injected airflow is swirled along pump lengthwise axis at the angle to nozzle confuser section surface to decrease cross-section of heterogeneous components in sewage channels in direction of their transfer. Proposed device comprises discharge valve and pump 4 in sewage transfer pipeline. Said pump has inlet and outlet branch pipes made up of Laval nozzles and arranged axially to make transfer channel. Flow swirler and injected airflow generator are arranged between said valve and pump. Swirler is made up of sleeve arranged on inlet branch pipe with through spiral channels communicating pressure chamber and nozzle chamber.
EFFECT: self-cleaning of sewage drain line.
8 cl, 3 dwg
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