Magnetic transmission electric gate valve

The invention discloses a magnetic transmission electric gate valve which enables the valve to be enclosed completely. The electric gate valve comprises an electric actuating mechanism, a valve body, a valve seat, a valve rod and a magnetic transmission mechanism; the magnetic transmission mechanism comprises a support, an outer rotor, an inner rotor and a shielding cover, wherein the support is connected to the lower end of the electric actuating mechanism; the a magnetic ring is fixedly embedded on an inner cavity wall at the lower part of the outer rotor; the outer rotor can rotatably installed in the inner cavity of the support, and the upper end of the outer rotor is connected with the electric actuating mechanism; a valve rod nut is fixedly embedded on the inner cavity wall at the lower part of the inner rotor; a magnetic ring is fixedly sleeved on the outer wall at the middle part of the inner rotor; the inner rotor is installed in the inner cavity of the outer rotor, thus the valve rod nut is spirally