Valve block, especially for hydraulic stand

Abstract

The application concerns the construction of a valve block, particularly for a hydraulic prop used in underground mining. The valve block has a rectangular body (1) in which three multi-stage sockets (2, 6, 12) are made, in which the following are mounted: a first controlled check valve (3), a second controlled check valve (7), and a threshold valve (13). The third socket (12) is connected by a channel (15) to an opening (16) in which an inlet check valve with a filter (17) is mounted, connected to the pressure main (Pc). The second socket (6) is connected by an internal channel (10) through the insert (11) of the pressure gauge (M) to the port (10.3) of the over-piston chamber (Kn) of the hydraulic prop (9). The longitudinal axes (O1, O5) of the first and second seats (2, 6) are parallel to each other, and the longitudinal axes (O6, O7) of the third seat (12) and the opening (16) which are parallel to each other are perpendicular to the longitudinal axes (O1, O5).At the same time, the longitudinal axis (O) of the insert (11) of the pressure gauge (M) is parallel to the longitudinal axis (O1) of the first seat (2).