Double-pump confluence hydraulic loop combination valve

Abstract

The invention discloses a double-pump confluence hydraulic loop combination valve in the technical field of hydraulic valves, which comprises a valve body unit, a small liquid inlet pipe, a large liquid inlet pipe and a return pipe, the valve body unit comprises a hollow shell, and the small liquid inlet pipe, the large liquid inlet pipe and the return pipe are respectively arranged on three sides of the outer part of the shell and are communicated with the inner part of the shell; the small liquid inlet pipe, the large liquid inlet pipe and the backflow pipe are not located at the same horizontal height. According to the invention, the cylindrical valve core unit is arranged and can be used for switching different hydraulic loops in the valve body in a rotary displacement manner, so that on-off switching control among the loops is realized; therefore, the combined liquid supply function of the small-flow pump and the large-flow pump, the independent liquid supply function of the small-flow pump and the simultaneous overflow function of the small-flow pump and the large-flow pump are achieved.

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