Hydraulic valve device
AssigneeHydac Filtertechnik GmbH
InventorWinfried Rüb
Life of this patent
Estimating the term…
Abstract
A hydraulic valve device includes a fluid connection arrangement (10) having different connections and a mobile control (18) for at least partially controlling connections of the fluid connection arrangement (10). The control (18) is provided with load reporting and load detecting connections (32, 38; 34, 36). According to the displacement position of the control (18), at least one part of the connections of the fluid connection arrangement (10) are interconnected in a fluid-guiding manner. The control can then be brought with precision into the required functional positions, with a favorable dynamic driving behavior.
Claims15
A hydraulic valve device, comprising:
- a fluid connector arrangement including a pressure connector, a return flow connector, a section load sensing connector, first and second control connectors and first and second utility connectors;
- and
- a displaceable control having a valve spool with first and second fluid-carrying connecting channels at least partially controlling said connectors of said fluid connector arrangement individually, said control including first and second load reporting connectors and first and second load sensing connectors interconnected in pairs with said first load reporting connector being connected to said second load sensing connector and said second load reporting connector connected to said first load sensing connector by said connecting channels, respective ones of said connectors of said fluid connector arrangement being connected depending on positioning and movement of said control, said second connecting channel being a longitudinal annular channel with an axial length extending across at least a region between said first control connector and said first utility connector in a neutral position of said control, said first connecting channel being a middle channel bordered by an insertion sleeve, the insertion sleeve and an inside wall of said control limiting said second connecting channel.
Dependencies are inferred from the claim text.