DEEP-WELL PUMP SET Russian patent published in 2009 - IPC F04B47/00 

FIELD: motors and pumps.

SUBSTANCE: set is intended for application in national industries for lifting of fluid from deep wells and boreholes. Driving pipeline is installed inside discharge pipeline. Piston of connecting rod and piston group is installed in driving pipeline and has cylinder shape. Set comprises connecting rod and piston group, piston of connecting rod and piston group, which has cylinder shape and is installed in driving pipeline, bottom part of which communicates to discharge pipeline by valve. Area of driving pipeline section is equal to total area of discharge pipeline section. Suction valve and dart valve in the form of flat ring or in the form of toroid are installed in bottom part of driving pipeline. Valve motion is limited. Dart valve should have specific weight equal to water density. At that value between limiter of its motion and dart valve is equal to half of piston stroke. The whole set is submersed in well, and its lower part rests on its bottom.

EFFECT: simplification of design, reduction of dimensions.

1 dwg