Slide valve
First Claim
1. A slide valve or the like, comprising:
- a slightly wedge-formed valve member arranged to close a flow duct in said valve by a cross-wise movement relative to said duct;
said valve having annular sealing surfaces surrounding said flow duct and being engageable by sealing side portions of said valve member for closing said valve;
said sealing side portions of the valve member being considerably narrower than said annular sealing surfaces surrounding said flow duct, and being in the closing position of said valve, located relative to said annular sealing surfaces at a relatively great distance from the inner edge of said annular sealing surfaces;
said sealing side portions of the valve member being located each to a separate unit journalled in a body portion of said valve member; and
flexible pins eccentrically located relative to said slide units for causing rotation thereof when said slide units come into contact with said flexible pins at an extreme open position to achieve even wear on the sealing side portions of said valve member.
1 Assignment
0 Petitions
Accused Products
Abstract
A slide valve with a slightly wedge-formed valve member arranged to close a flow duct by a cross-wise movement relative to the duct. There are annular sealing surfaces surrounding the flow duct and they are engageable by sealing side portions of the valve member for closing the valve. The sealing side portions of the valve member are considerably narrower than the annular sealing surfaces of the flow duct and are, in the closing position of the valve, located at a relatively great distance from the inner edge of the annular sealing surfaces. The sealing side portions of the valve member are of a softer material than the annular sealing surfaces, and hence, are subject to a repeated grinding against the annular sealing surfaces, when operating the valve. The sealing side portions of the valve member may be located each to a separate slide unit journalled in a body portion of the valve member. The slide units are in that case arranged to be slightly rotated by the opening movement of the valve.
19 Citations
11 Claims
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1. A slide valve or the like, comprising:
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a slightly wedge-formed valve member arranged to close a flow duct in said valve by a cross-wise movement relative to said duct; said valve having annular sealing surfaces surrounding said flow duct and being engageable by sealing side portions of said valve member for closing said valve; said sealing side portions of the valve member being considerably narrower than said annular sealing surfaces surrounding said flow duct, and being in the closing position of said valve, located relative to said annular sealing surfaces at a relatively great distance from the inner edge of said annular sealing surfaces; said sealing side portions of the valve member being located each to a separate unit journalled in a body portion of said valve member; and flexible pins eccentrically located relative to said slide units for causing rotation thereof when said slide units come into contact with said flexible pins at an extreme open position to achieve even wear on the sealing side portions of said valve member. - View Dependent Claims (2, 3, 4, 5)
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6. A slide valve or the like, comprising:
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a slightly wedge-formed valve member arranged to close a flow duct in said valve by a cross-wise movement relative to said duct; said valve having annular sealing surfaces surrounding said flow duct and being engageable by sealing side portions of said valve member for closing said valve; said sealing side portions of the valve member being considerably narrower than said annular sealing surfaces surrounding said flow duct, and being in the closing position of said valve, clearly spaced from the inner edge of said annular sealing surfaces; and means inserted within the interior of the valve housing so that when said valve member is displaced into its fully open position rotatable members carrying said sealing side portions of the valve member contact said means for causing rotation of said members to obtain a different sealing position for said sealing side portions when the valve member is moved between its open and its closed position, such rotation of the valve member occurs when said rotatable members come into contact with said last-mentioned means at the extreme open position to achieve an even wear of the sealing side portions of said valve member.
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7. A slide valve or the like comprising:
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a slightly wedge-formed valve member arranged to close a flow duct in said valve by a cross-wise movement relative to said duct; said valve having annular sealing surfaces surrounding said flow duct and being engageable by metal sealing side portions of said valve member for closing said valve; said sealing side portions of the valve member being considerably narrower than said annular sealing surfaces surrounding said flow duct, and being in the closing position of said valve, clearly spaced from the inner edge of said annular sealing surfaces; said sealing side portions of the valve member being located each to a separate slide unit journalled in a body portion of said valve member; and flexible pins causing rotation of said slide units, said flexible pins being eccentrically located relative to said slide units so as to rotate said slide units due to an opening or a closing movement of the valve member during operating of the valve. - View Dependent Claims (8, 9, 10, 11)
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Specification