PUMP Russian patent published in 2007 - IPC F04F1/04 F24J2/42 

FIELD: pump engineering.

SUBSTANCE: pump has cylinder with bottom provided with sucking valve and filter, head with the outlet branch pipe connected with the air pipeline, and outlet branch pipe connected with the liquid pipeline by means of weld or thread and provided with a check valve. The pipelines are mounted in the casing tube. The free end of the liquid pipe line is in communication with the vessel of the regulator of the cycle frequency. The pump is provided with compressor and vacuum pump. The cylinder is made of a section of the casing tube that receives the pipelines. The free end of the air pipeline is connected with the outlet branch pipe of the compressor and with the branch pipe of the vacuum pump.

EFFECT: enhanced efficiency and improved operation conditions.

1 cl, 2 dwg