DRILL BORING OPPOSED PUMP Russian patent published in 2017 - IPC F04B9/111 

FIELD: engines and pumps.

SUBSTANCE: drill boring opposed pump contains two pistons, hydraulic cylinder, suction and discharge lines and solenoid control valve. Two valve heads consist of two ball valves, one of which is connected to the discharge line, and the other - with the suction line and are connected from both sides of the pump housing, containing a cylinder. The hydraulic cylinder has the possibility of reciprocating movement and it is connected with sleeves from both sides. There are pistons inside the sleeves, interconnected by means of the rod.

EFFECT: simplification of design, while maintaining the high performance, reduction of size.

4 cl, 1 dwg