Magnetically actuated valve
First Claim
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1. A magnetically actuated valve comprising:
- (a) a one-piece, generally cylindrically-shaped valve body defining therein an aperture and first and second passages in fluid communication through said aperture, said valve body having a stepped interior diameter, decreasing in diametric dimension from outer ends of said first and said second passages toward said aperture;
(b) a sealing member linearly translatable within said first passage for selectively blocking flow through said aperture;
(c) a magnetically operable rotor disposed within said first passage;
(d) means external to said valve body for inducing rotation of said rotor;
(e) a screw and nut arrangement disposed within said first passage for converting rotational motion of said rotor into linear motion of said sealing member; and
(f) a holding ring, the radially outer portion thereof being attached within said first passage to a stepped portion of said interior of said valve body, and wherein said holding ring, said sealing member, said rotor, and said screw and nut arrangement are configured for being insertable from an outer end of said first passage into said valve body and said sealing member, said rotor, and said screw and nut arrangement are supported by said holding ring.
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Abstract
A magnetically actuated valve which includes a one-piece valve body, a linearly translatable poppet for selectively blocking an aperture in the valve body, a magnetically operable rotor, a magnetic collar or electromagnetic coil external to the valve body for inducing rotation of the rotor, and a screw and nut arrangement for converting rotational motion of the rotor into linear motion of the poppet.
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Citations
12 Claims
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1. A magnetically actuated valve comprising:
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(a) a one-piece, generally cylindrically-shaped valve body defining therein an aperture and first and second passages in fluid communication through said aperture, said valve body having a stepped interior diameter, decreasing in diametric dimension from outer ends of said first and said second passages toward said aperture; (b) a sealing member linearly translatable within said first passage for selectively blocking flow through said aperture; (c) a magnetically operable rotor disposed within said first passage; (d) means external to said valve body for inducing rotation of said rotor; (e) a screw and nut arrangement disposed within said first passage for converting rotational motion of said rotor into linear motion of said sealing member; and (f) a holding ring, the radially outer portion thereof being attached within said first passage to a stepped portion of said interior of said valve body, and wherein said holding ring, said sealing member, said rotor, and said screw and nut arrangement are configured for being insertable from an outer end of said first passage into said valve body and said sealing member, said rotor, and said screw and nut arrangement are supported by said holding ring. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A magnetically actuated valve comprising:
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(a) a one-piece, generally cylindrically-shaped valve body defining therein an aperture and first and second passages in fluid communication through said aperture, said valve body having a stepped interior diameter, decreasing in diametric dimension from outer ends of said first and said second passages toward said aperture, said aperture being further defined by a generally annular valve seal including at least one seal, (b) a poppet linearly translatable within said first passage, said poppet being sized and shaped for, when in a closed position, abutting said seal thereby blocking flow through said aperture; (c) a magnetically operable rotor disposed within said first passage; (d) means external to said valve body for inducing rotation of said rotor; (e) a screw and nut arrangement disposed within said first passage for converting rotational motion of said rotor into linear motion of said poppet, said nut being fixedly attached within said first passage and said screw extending generally parallel to the direction of flow of fluid through said valve body, said screw being rotated through said nut by said rotor and said poppet being connected with said screw in a manner whereby said poppet translates linearly with said screw yet said screw can also rotate relative to said poppet; and (f) a first holding ring, the radially outer portion thereof being attached within said first passage to a stepped portion of said interior of said valve body, a second holding ring attached within said second passage, a bushing mounted near the center of said second holding ring, and a shaft extending from said poppet through said bushing, said first and said second holding rings providing support and alignment for said screw and nut arrangement, said rotor and said poppet, and wherein said first holding ring, said sealing member, said rotor and said screw and nut arrangement are configured for being insertable from an outer end of said first passage into said valve body.
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Specification