Invariable automatic control valve assembly of emulsion motor rotational speed

The utility model discloses an invariable automatic control valve assembly of emulsion motor rotational speed, including invariable valve piece, invariable piston, invariable oil -out, invariable spring, invariable lock is female, and it is female to set for the lock, sets for and adjusts, and the hydraulic fluid port is set for to the feedback hydraulic fluid port, adjusts the throttle, the oil inlet, and parts such as cushion chamber are constituteed. The emulsion gets into the cushion chamber through the oil inlet and obtains the buffering back, sets for the hydraulic fluid port via setting for to adjust to get into, the emulsion reaches laggard the according with rules of required flow through the settlement and flows successively, the emulsion passes through oil inlet via invariable piston, the emulsion is through invariable piston with supplying with the emulsion motor through invariable export after its constant flow, the emulsion that the emulsion motor obtained the constant discharge later keeps at the uniform velocity operateing. This device has the influence that does not receive confession liquid stream volume and pressure, and automatic constant discharge makes the emulsion motor obtain invariable pressure and flow, play can the invariant at the uniform velocity, invariable moment of torsion operates, the effect of accurate even running.