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US 4,489,756 AGranted
Sliding gate fluid control valve
AssigneeSchubert & Salzer
InventorJurgen Balz
Life of this patent
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AssigneeSchubert & Salzer
InventorJurgen Balz
Estimating the term…
A sliding gate valve includes a valve body (1) and a valve plate (5) which can slide transversely to the direction (108) of flow of the medium and exhibits narrow slot passages (50, 51) running transversely to the direction of the stroke, and which cooperates with a counterpart (4). The counterpart (4) is composed of a valve seat (40) which, like valve plate (5), consists completely of ceramic, and further includes a metallic supporting part (41) which supports the valve seat (40) across the whole area of the side of it opposite valve plate (5). The counterpart (4) includes passages which may be opened or closed by the valve plate (5) and are formed by slotted passages (400, 410; 401, 411; 402, 412)in alignment in the valve seat (4) and in supporting part (41). The valve plate (5) is connected via a screw connection (6, 61, 610; 8, 61, 615) to a driving unit which includes a part (33) acted upon by a control medium. This driving unit is, in turn, connected via a connecting part (2) to the valve body (1). Screw connection (6, 61, 610; 8, 61, 615) adjusts the distance between part (33) and valve plate (5) and allows precise alignment of the passages of the valve plate (5) and valve seat (40) which is critical owing to the brittleness of the ceramic material.
A slide valve device having a valve body and a valve plate which can slide transversely to the direction of flow of the medium and includes passages running transversely to the direction of slide, said valve plate cooperating with a counterpart which includes passages transversely to the direction of the movement of the slidable valve plate which can be opened or closed by the valve plate, wherein said device comprises:
A valve having a valve body and a valve plate which can be moved transversely to the direction of flow through a flow passage which is to be controlled, a driving unit for moving said valve plate having a part acted upon by a control medium, a positioning-rod connecting said valve plate to said driving unit said driving unit being rotatable with respect to said valve body, means fixing said driving unit in any position of rotation, said part of said driving unit acted upon by the control medium and said valve plate being connected together by a screw connection carried by said positioning rod which alters the distance between said driving unit and valve plate, said screw connection being fixably connected to said driving unit for rotation with said driving unit, and said screw connection including a part connected to said valve body which is fixed against rotation relative to said valve body so that rotation of said driving unit causes adjustment in the positioning of said valve plate in said valve body.
Dependencies are inferred from the claim text.