Sleeve valve
First Claim
1. A sleeve valve installed in the midway or end portion of a fluid pipeline and comprising a fixed sleeve which has a cylindrical hollow shape with its inlet side end opened and its outlet side end closed and in the peripheral wall of which a plurality of openings are perforated;
- and a movable sleeve having a cylindrical hollow shape with both ends opened and optionally reciprocating toward and away from said fixed sleeve selectively to close the respective openings bored in the peripheral wall of the fixed sleeve, the improvement wherein an inner sleeve which has a cylindrical hollow shape with its inlet side end opened and in the peripheral wall of which a plurality of openings similar to those bored in the peripheral wall portion of said fixed sleeve facing said inner sleeve are perforated is arranged within said fixed sleeve coaxially therewith, one or more ring shaped partition plates being disposed at a substantially equal interval between the outer wall of said inner sleeve and that inner wall portion of said fixed sleeve which confronts said inner sleeve.
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Accused Products
Abstract
A sleeve valve for pipelines has a fixed sleeve with inlet end open and outlet end closed, and openings in its side wall. A movable sleeve open at both ends is slidable in the fixed sleeve to open and close the openings. The improvement is that the inner sleeve also has openings in its side wall, and one or more ring-shaped partition plates are disposed at substantially equal intervals between the outer wall of the movable sleeve, and the inner wall of the fixed sleeve.
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Citations
21 Claims
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1. A sleeve valve installed in the midway or end portion of a fluid pipeline and comprising a fixed sleeve which has a cylindrical hollow shape with its inlet side end opened and its outlet side end closed and in the peripheral wall of which a plurality of openings are perforated;
- and a movable sleeve having a cylindrical hollow shape with both ends opened and optionally reciprocating toward and away from said fixed sleeve selectively to close the respective openings bored in the peripheral wall of the fixed sleeve, the improvement wherein an inner sleeve which has a cylindrical hollow shape with its inlet side end opened and in the peripheral wall of which a plurality of openings similar to those bored in the peripheral wall portion of said fixed sleeve facing said inner sleeve are perforated is arranged within said fixed sleeve coaxially therewith, one or more ring shaped partition plates being disposed at a substantially equal interval between the outer wall of said inner sleeve and that inner wall portion of said fixed sleeve which confronts said inner sleeve.
- View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21)
Specification