METHOD FOR PRODUCTION OF BED NON-GASSED FLUID Russian patent published in 2010 - IPC F04B47/00 F04F1/08 

FIELD: mining.

SUBSTANCE: method of multistage fluid lift, realised by means of continuous fluid lift by mutually replaceable pneumatic double-chamber displacement pumps connected by through channels of vacuum, spent gas, compressed has and through wire of electric circuit, with level sensors in each working chamber, three-stroke valve, electric double-sided pneumatic distributor and control unit in each stage; as fluid is sucked into one of working chambers of lower stage, three-stroke valve of which is installed when assembled into "vacuum" position, simultaneously the other chamber of this stage is filled with compressed air. By signals from level sensor, control unit generates a command to switch double-sided pneumatic distributor. Afterwards compressed air is supplied into filled chamber of lower stage. Then fluid is sucked into one of working chambers of upper stage, three-stroke valve of which is installed when assembled into "spent gas" position, atmospheric air from which is displaced into annular space. As one of working chambers of upper and lower stages is being filled, by signals from level sensors of upper and lower stages, their control units generate command to switch double-sided pneumatic distributors.

EFFECT: simplified process of producing non-gassed fluid with mechanical admixtures from depths.

4 dwg