Kinetic extruder - a dry pulverized solid material pump
AssigneeLockheed Missiles & Space Company, Inc.
InventorsJohn W. Meyer, John H. Bonin, Arnold D. Daniel, Jr.
Life of this patent
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Abstract
Method and apparatus are shown for the continuous feeding of pulverized material to a high pressure container. A rotor is located within the high pressure container. The pulverized material is fed from a feed hopper through a stationary feed pipe to a vented spin-up chamber to a plurality of two-stage sprues mounted in the rotor. Control nozzles downstream from the sprues meter the flow of coal through the sprues.
Claims14
Apparatus for feeding a pulverized material from a supply source to a container against a pressure differential, said apparatus including a stationary feed pipe, said stationary feed pipe having an input end and an output end, said feed pipe adapted to feed pulverized material from the input end to the output end, said output end including at least one radially extending opening and defining an inner hub;
- a rotor, said rotor includes a plurality of radial sprues, each sprue including a proximal end and a distal end defining a passage for passage of said pulverized material, nozzle means cooperatively mounted at the distal end of each of said sprues for maintaining a stable plug of the pulverized material in said sprues and for controlling the flow of said material independent of the pressure in said container, said rotor rotatably mounted concentrically with respect to said inner hub of said stationary feed pipe and said rotor located so that the proximal ends of the sprues are juxtaposed to said inner hub, the space between proximal ends of the sprues and said inner hub forming a spin-up zone where said pulverized material emitting from said output end of said stationary feed pipe is accelerated before entering into said sprues of said rotating rotor, said nozzle means further defined as a fixed geometry nozzle having a relatively large opening cooperating with the distal end of said sprue and a smaller metering opening at the terminal end to control the flow of said material independent of the gas pressure in the said container at the terminal end immediately external to said rotor, said nozzle means including at least one port permitting gas pressure to equalize between the pulverized material within said nozzle structure and said container.
Apparatus for feeding a pulverized material from a supply source to a housing maintained at elevated pressure, said apparatus including a rotor disposed in said housing and a feed means, said rotor operably connected to the feed means for receiving the pulverized material and discharging it within the housing, said rotor including a first means for forming a plug of the material, said first means having a material inlet and outlet, and said rotor including a second means for controlling the flow of material through said rotor, said second means spaced from the outlet of the first means and substantially in alignment therewith, said second means including an isobaric control nozzle having a fixed geometry, said control nozzle sized to control the flow of said material through said rotor and through said apparatus, said control nozzle further defined as including at least one fixed port communicating with the interior of said housing for maintaining the junction between said first and second means at the same pressure as the pressure in said housing.
Dependencies are inferred from the claim text.