ELECTROMAGNETIC VALVE Russian patent published in 2007 - IPC F16K31/42 F16K31/02 

FIELD: pipeline armature engineering, possible use in devices with remote control over working substance flows in main transportation systems for them.

SUBSTANCE: electromagnetic valve contains body with inlet and outlet branch pipes, electromagnetic drive with control winding, lower and upper heads, main valve and pilot valve. Main valve is made in form of a piston with forcing aperture and flow channels. Pilot valve is controlled by pressure of above-piston hollow of the main valve. The main valve is made of magneto-soft material, and is an element of differential magnetic system of electromagnetic drive and contains a rod in the center of the piston. A recess is made on the rod. The recess is forced into the zone of lower head during opening of main valve. In the moment of insertion into the zone of lower head the recess ensures change of direction of magnetic flow over the pole and fixation of plunger when the valve is fully open. The pole is made on the lower head on the side of main valve. An aperture is made in the central rod of main valve in axial direction. A pusher is mounted in the aperture with organized working space. The pusher provides control over the slide of the pilot valve.

EFFECT: improved magnetic system of electromagnetic drive of valve, stable fixation of locking organ of main valve and prevention of forced oscillations.

2 dwg