Patent ID: 8727308

Claim:
An adjustable electromagnetic fluid flow control valve, comprising: a tubular member of non-magnetic material; one end of said tubular member is forming an inlet and the opposite end of said tubular member is forming an outlet; at least one annularly configured electromagnetic coil which is surrounded from outside and partially from inside by a core of ferrous laminations; an inner part of said core consists of at least two mutually spaced bushes; said bushes of the inner part of said core are disposed within said tubular member; the end of at least one of said mutually spaced bushes which faces the other mutually spaced bush is cut across the length of said bush and a straight line which connects the end points of the profile of the cut is not perpendicular to a longitudinal axis of said tubular member; said coil has leads that are connected to a power supply and can be energised by said power supply under control of a controller; at least one occluder of a magnetic material, said occluder is disposed within said tubular member, a cross-section area of said occluder which faces the fluid flow is less than an inner cross-section area of said tubular member; said occluder cooperates with said electromagnetic coil and varies the flow volume permitted through the valve when said coil is energised; a supporting member having a narrowed end with a flat tip which faces said occluder and at least one passageway allowing fluid flow through, said supporting member is located within said bush of said inner part of said core and its flat tip is contiguous to said occluder; a sealing gasket is inserted between said flat tip of said supporting member and said occluder; said at least one passageway of said supporting member has an exit through said flat tip; said exit is blocked by said occluder when said valve is closed; when said valve is opened said occluder is metering fluid flow through said exit and conformably through said valve; at least one biasing means pressing said occluder against said flat tip of said supporting member; an additional supporting member separating said occluder and said biasing means and having at least one passageway allowing fluid flow through; said additional supporting member having an end with a round tip, which surface is tangential to an adjacent surface of said occluder; two locking members rigidly mounted within said tubular member providing a predetermined axial location of the opposite to said occluder ends of said first supporting member and said biasing means; the axial position of at least one of said locking members is adjustable.