Deaerator for particulates
AssigneeMitsubishi Kasei Corporation
InventorsYasuo Yamada, Mamoru Nakayama, Kazuo Sagara
Life of this patent
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Abstract
A deaerator for particulates capable of increasing the bulk density of the particles to reduce the volume of the particulates. In the deaerator, a perforated cylindrical section (1a) of a cylindrical body (1) includes a filter (13) formed of a sintered material. A screw conveyor (4) arranged in the cylindrical body has a screw pitch (4a, 4b) which is small and which gradually reduces the region on the downstream side of the perforated cylindrical section. The filter may be formed by sintering a fine metal fibre, a metal powder or a ceramic powder.
Claims17
A deaerator for particulate materials comprising:
- a cylindrical body having a charge port at one end, a discharge port at the other end, and a perforated cylindrical section intermediate its ends, said perforated cylindrical section including a filter;
- an outer cylinder surrounding said intermediate section to define an evacuation chamber therebetween, said evacuation chamber having an evacuation opening and a compressed air opening;
- and
- a screw conveyor rotatably mounted within said cylindrical body to transport particulates from said charge port to said discharge port upon rotation, said screw conveyor extending from said charge port to said discharge port and having a basic screw pitch section and a gradually decreasing reduced screw pitch section, said basic screw pitch section having a substantially uniform screw pitch and extending from said charge port to a downstream end of said perforated cylindrical section, and said reduced pitch section extending between the downstream end of said perforated cylindrical section and said discharge port.
A deaerator for particulate materials comprising:
- a cylindrical body having a charge port at one end, a discharge port at the other end, and a perforated cylindrical section intermediate its ends, said perforated cylindrical section including a filter;
- an outer cylinder surrounding said intermediate section to define an evacuation chamber therebetween, said evacuation chamber having an evacuation opening and a compressed-air opening;
- and
- a screw conveyor extending from said charge port to said discharge port and being rotatably mounted within said cylindrical body to transport particulates from said charge port to said discharge port upon rotation, said screw conveyor having a shaft with a basic substantially uniform diameter section and a section having an increasing diameter said uniform diameter section extending from said charge port to a downstream end of said perforated cylindrical section and said increasing diameter section being located between the downstream end of said perforated cylindrical section and said discharge port.
Dependencies are inferred from the claim text.