A variant magnetic field line distribution proportional solenoid

The present invention discloses a variable magnetic field line distribution proportional solenoid, comprising a guide sleeve (2), a yoke (3), the control coil (4), spacer ring (5), cup-shaped pole piece (6), the valve interface block (7), the pusher (8) and movable core (10), said valve interface block (7) and face the movable core (10) respectively concave curved surface of revolution and the convex curved surface of revolution , two rotary shaft along a curved surface of revolution are movable core axis and generatrix are conic shape Similarly, when the movable core (10) at the maximum stroke position of the contact surface with the valve block interfaces (7) It is a narrow annulus. The present invention is made without changing the basic structure of the existing proportional solenoid, the interface shape and size, can significantly improve the performance of a linear proportional solenoid actuator. Further, since the movable iron core at the maximum stroke position of the working face and the interface block valve the contact area is small, and therefore cancel the septum magnetic cushion simplify the current proportional solenoid structure used.