초록 ▼

A device for shutting off pipelines for the transport of bulk product is disclosed. The device comprises a housing with a circular passage orifice, a closing element mounted pivotably in the housing, and an annular gasket surrounding the said orifice and capable of interacting with the peripheral pa

A device for shutting off pipelines for the transport of bulk product is disclosed. The device comprises a housing with a circular passage orifice, a closing element mounted pivotably in the housing, and an annular gasket surrounding the said orifice and capable of interacting with the peripheral part of the closing element. The gasket is mounted on a fixed support, and the closing element is displaceable along an axis perpendicular relative to its pivot axis. The device is particularly adapted for pipelines for transport of coal dust.

대표청구항 ▼

A device for shutting off a pipeline for the transport of bulk products, comprising: a housing having a circular orifice; an annular gasket surrounding said orifice; closing means for closing said orifice, said closing means being pivotable about a first axis within said housing, having a closed pos

A device for shutting off a pipeline for the transport of bulk products, comprising: a housing having a circular orifice; an annular gasket surrounding said orifice; closing means for closing said orifice, said closing means being pivotable about a first axis within said housing, having a closed position wherein the closing means contacts the gasket to close said orifice, having a second position wherein the closing means is axially displaced from the gasket and having an open position in which the closing means is pivotably displaced about the first axis from the second position; means for axially displacing the closing means in a direction perpendicular to the first axis; and means for pivoting the closing means about the first axis; wherein; the closing means comprises a spherical dome; the means for pivoting comprises a support pivotably mounted within the housing, said dome being slidably mounted on said support to define a first sealed chamber between the dome and the support; and the means for axially displacing the closing element comprises pneumatic fluid supply means for pressurizing the first sealed chamber to urge the dome axially away from the support.