초록 ▼

A rotary valve adapted to be used in regulating the flow of a particulate material comprises a casing with inlet and outlet conduits and a rotor mounted for rotation about a horizontal axis in the casing. The rotor has a ring of partially closed pockets to meter the particulate material passing thro

A rotary valve adapted to be used in regulating the flow of a particulate material comprises a casing with inlet and outlet conduits and a rotor mounted for rotation about a horizontal axis in the casing. The rotor has a ring of partially closed pockets to meter the particulate material passing through the valve and its periphery is spaced inwardly from the interior of the casing an amount sufficient to prevent squeezing and disintegration of the particulate material between the rotor and inlet conduit. A baffle prevents particulate material from flowing downwardly in the space between the rotor and casing at the up-turning of the rotor.

대표청구항 ▼

A rotary valve adapted to be used in regulating the gravity flow of a friable granular material, said valve comprising, in combination, a casing having inlet and outlet conduits connected to the upper and lower portions thereof respectively and a generally cylindrical inner wall, a generally cylindr

A rotary valve adapted to be used in regulating the gravity flow of a friable granular material, said valve comprising, in combination, a casing having inlet and outlet conduits connected to the upper and lower portions thereof respectively and a generally cylindrical inner wall, a generally cylindrical rotor disposed within said casing mounted for rotation about a horizontal axis therein and substantially spaced from the inner wall of said casing to provide an annular space of sufficient width between said rotor and casing that particles of said friable material can pass without crumbling in said space from the inlet conduit to the outlet conduit, said rotor having a ring of at least partially open pockets defined by spaced radial walls having arcuate lips extending from the walls in a direction opposite to the direction of rotation of the rotor to render the pockets partially closed, said pockets being arranged to receive granular material fed to said inlet conduit and transmit it to said outlet conduit, and baffle means mounted in the annular space between said rotor and casing at the up-turning side of the rotor to prevent flow of granular material through said annular space counter-current to the direction of motion of said rotor, said baffle means having an inner surface close to and curved to conform with said arcuate lips, and said inner surface extending circumferentially a distance greater than the circumferential extent of the open portion of any of said partially open pockets.