SHUT OFF- DISTRIBUTING DEVICE Russian patent published in 2002 - IPC

FIELD: machine engineering, namely, shut off and distributing devices used in testing beds, hydraulic and pneumatic, mainly high pressure, drive systems. SUBSTANCE: shut off- distributing device includes housing with cavities for pumping, supplying and discharging; two mutually spring-loaded valves in the form of sleeve arranged in housing. The last is provided with second pair of mutually spring-loaded valves. Cavities of both pairs of valves are mutually communicated. Inside inner cavities of each pair of valves there are protrusions between which spring is placed. Extending outside tie rod is passed through said spring. Both tie rods are kinematically joined one with another by means of supporting unit and control knob. Each tie rod has stops that may alternatively engage with above mentioned protrusions. Lengthwise grooves are provided on outer surface of one valve of valve pair; said one valve abuts to supply cavity of device. EFFECT: enlarged functional possibilities of device providing operation of hydraulic aggregates with several working cavities. 4 dwg