| 摘要 |
The invention provides an electric motor valve which can miniaturize tank length and valve body, stabilize rotor rotation, eliminate rotating directional stress on the valve seat face applied by valve core and be manufactured with low cost. A cylinder (38) with a bottom is embedded in a guiding bush (26), thereby the rotation of an embedded metal piece (36) incorporated with a rotor (30) is guided and transmitted stably to a valve shaft stand (32). The embedded metal piece (36) and the valve shaft stand (32) are clamped non-rotatably but capable of relative moving in axial direction by a special-shaped shaft embedded with a special-shaped hole. The valve shaft stand (32) moves along the axis direction during rotation by a spiral feeding mechanism between the valve shaft stand and the guiding bush (26). The movement of the valve shaft stand (32) in axis direction is transmitted to a valve core (23) on top of a valve shaft 24, and the circulation flow can be adjusted by contacting and separating of the valve core (23) and the valve seat (22). |
