CONTROL VALVE, IMPACTOR AND METHOD OF IMPACTOR OPERATION CYCLE CONTROL Russian patent published in 2008 - IPC B25D9/16 

FIELD: technological processes.

SUBSTANCE: control valve for impactor operation cycle control includes a case with an area, at least two high-pressure medium channels connected to the case area, control element, at least first high-pressure working area and at least second high-pressure working area. Control element is mounted in the case area and can move forth and back in the first and second directions, and is intended for closing and opening high-pressure medium channels. Control element can move from middle position to the first extreme position in the first direction. Second high-pressure working area is formed on the condition of closed high-pressure area forming, and therefore, by control element movement from middle position to the second extreme position in the second direction. First high-pressure working area is formed on the condition of closed high-pressure area forming.

EFFECT: simplified control valve construction and impactor operation cycle control.

18 cl, 6 dwg