| 摘要 |
<p>The invention relates to a hydraulic valve assembly having a cartridge insert valve in a bore hole designed in a valve block and connected to the flow channels arranged in the valve block comprising a valve sleeve inserted in the bore hole and a closing member guided into said sleeve, wherein the valve sleeve forms a valve seat for the closing member in the closing position thereof and the closing member can be moved by means of a connected hydraulic pre-control between the closed position thereof seated on the valve seat and separating the flow channels from one another, and an opened position pushed into the valve sleeve, and the bore hole is sealed tight by the cartridge insert valve inserted the rein via a valve cover connected to the valve block. The closing member forms a sleeve-shaped closing element (17) exhibiting a through-hole (18) and thus ring surfaces on both ends thereof, the surfaces having identical area, and a pressure equalization chamber (19) corresponding with the through-hole (18) of the closing element (17) is formed in the valve cover (20) such that the closing element (17) is engaged on both sides with the pressure enacting in the adjustment direction of the element, which is seated completely pressure-equalized in the valve sleeve (14), wherein a radially protruding collar (21) having control surfaces (22, 23) opposite one another in the adjustment direction is arranged on the outer circumference of the closing element (17) for adjustment thereof. The control surfaces can be loaded by the control oil conducted via the hydraulic pre-control (25) for moving the closing element (17) in the valve sleeve (14), and the valve sleeve (14) inserted in the bore hole (11) of the valve block is fastened on the valve cover (20), the valve seat (16) formed on the valve sleeve (14) thereby maintaining an unaltered distance from the valve cover (20) during operation of the valve assembly.</p> |
