초록 ▼

An improved valve well-suited for controlling the flow of particulate solids comprises a valve body having a flow passageway comprising inlet and outlet passages extending transversely to a slide chamber. A plug member having a flow orifice, which is preferably of extended length extending transvers

An improved valve well-suited for controlling the flow of particulate solids comprises a valve body having a flow passageway comprising inlet and outlet passages extending transversely to a slide chamber. A plug member having a flow orifice, which is preferably of extended length extending transversely through it is mounted for sliding movement within the slide chamber to seal the flow passageway when the flow orifice is out of register therewith and to connect the inlet and outlet passages in flow communication when registered therewith. The flow orifice is preferably of ovoid cross-section and provides, at all operating positions of the valve, a cross-sectional flow area from the flow orifice to the outlet passage which is at least as great as the smallest cross-sectional flow area of the flow orifice. The flow orifice in its wide open position does not restrict the cross-sectional area available for flow between the inlet and outlet passages of the valve body.

대표청구항 ▼

An improved valve comprising: a valve body having a slide chamber therein and an inlet passage and an outlet passage cooperating to partially define a flow passageway transversely intersecting the slide chamber: a plug member mounted for sliding movement within the slide chamber, the plug member bei

An improved valve comprising: a valve body having a slide chamber therein and an inlet passage and an outlet passage cooperating to partially define a flow passageway transversely intersecting the slide chamber: a plug member mounted for sliding movement within the slide chamber, the plug member being effective to seal the flow passageway as defined below and having a flow orifice extending transversely therethrough, the flow orifice comprising an inlet segment facing the inlet passage and an outlet segment facing the outlet passage, the plug member and its flow orifice being each dimensioned and configured to seal the flow passageway when the flow orifice is out of registration with the inlet passage and to complete the flow passageway by connecting the inlet and outlet passages in flow communication when the flow orifice is registered therewith, the cross-sectional area of the outlet segment of the flow orifice being sufficiently greater than the cross-sectional area of the entry to the outlet passage whereby, at all operating positions of the plug member within the slide chamber, the outlet passage is unconstricted by the plug member; and positioning means operatively connected to the plug member to position the plug member at selected incremental locations within the slide chamber to selectively adjust registration of the flow orifice with the inlet and outlet passages at fully open, fully closed and a plurality of intermediate throttling positions.