Oscillating slide valve
AssigneeLeybold-Heraeus GmbH & Co. Kommandit-Gesellschaft
InventorsFritz Anderle, Gerhard Frey, Lutz Grein, Uwe Reimpell, Friedrich Stark
Life of this patent
Estimating the term…
Abstract
In an oscillating valve in which a slide plate is subjected to a swinging movement between an opening position in which it is clear of a flow passage and a closing position in which it is inserted in the flow path, and, in its closing position, is applied against a sealing surface by a sealing force to block the flow path, a single drive device is provided to produce both the swinging movement and the sealing force and the sealing force is produced by moving the slide plate perpendicular to the sealing surface only after the slide plate has reached the closing position associated with its swinging movement.
Claims12
In an oscillating slide valve including a slide plate, a drive device for operating the slide plate, means defining a fluid flow passage and presenting a planar sealing surface surrounding the passage, a first mechanism connected between the drive device and the slide plate for moving the slide plate, in response to movement of the drive device, between a valve opening position in which the slide plate is displaced laterally from the fluid passage and a valve closing position in which the slide plate is interposed in the flow passage, and means for pressing the slide plate against the sealing surface when the plate is in its closing position, the improvement wherein:
- said means are connected to be driven by said drive device and comprise a second mechanism connected for moving said slide plate perpendicular to said sealing surface and against said sealing surface only after said slide plate has come to rest in said closing position;
- said drive device comprises a single drive motor and two control elements each connected to be driven by said motor and each presenting a circular control portion and a spiral control portion;
- and each said mechanism comprises a respective lever operatively associated with, and positively guided by, the control portions of a respective one of said control elements.
Dependencies are inferred from the claim text.