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Hermetically sealed valve

  • US 4,552,177 A
  • Filed: 06/13/1983
  • Issued: 11/12/1985
  • Est. Priority Date: 06/13/1983
  • Status: Expired due to Term
First Claim
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1. A hermetically sealed valve for the continuous control of the flow of a liquid comprising:

  • a lower fluid region for intake of a liquid flow;

    a plurality of internal flow restriction orifices, each orifice having an inlet and an outlet side, the inlet sides of which are fluidly connected with and form a terminator for the lower fluid region;

    an upper fluid region in fluid communicating relationship with the lower fluid region through the flow restriction orifices;

    a continuous diaphragm member sealingly connected from below said internal flow restriction orifices, sealing upwardly across said orifices, folding back upon itself, the diaphragm member being connected to an actuating means, the actuating means comprising a moveable cup having a lower driving section through which fluid passes and to which a first edge of the diaphragm member is attached, and an annular diaphragm support wall extending upwardly from the driving section;

    said actuating means rollingly actuating said diaphragm between a lower position, wherein said orifices establish fluid communication between said upper and lower region, and an upper position, wherein said orifices are fluidly sealed by the diaphragm member to prevent fluid communication between said lower and upper regions;

    screw driving means connected to said actuating means and extending below said actuating means in its lower position, rotation of said screw driving means moving said actuating means between its upper and lower positions;

    magnetic rotation means affixed drivably to said screw driving means of the actuating means;

    external magnetic field generation means which generates a controlled rotational magnetic field tangentially about said magnetic rotation means for rotating said rotation means and moving said actuating means between its upper and lower positions.

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