Excavator dipper regeneration valve

The utility model relates to an excavator dipper regeneration valve. It includes the valve barrel, a end screw thread connection of a plug screw and valve barrel, a valve head links to each other with the other end of valve barrel, be equipped with in the valve barrel one with the fixing base of plug screw looks butt, the one end of an elastic component links to each other with the fixing base, link to each other with the one end of valve barrel sliding connection's the case other end with the elastic component, the other end and the valve head looks butt of case, stretch into the plunger of the tip central authorities cartridge no. 1 of valve barrel part rather than sliding connection at the valve head, the part that lies in the valve barrel outside on the valve head is equipped with a radial hole, valve head tip and case looks butt are worn out to the one end of plunger, the other end of plunger extends in the radial hole, be equipped with an annular groove on the case circumference, be equipped with on the valve barrel with the 2nd radial hole of annular groove matched with and the 3rd radial hole. The utility model has the advantages of reasonable design, can adjust the oily regeneration volume of hydraulic pressure at the in -process of dipper adduction according to real -time excavator operating mode.