Apparatus and method for uniformly wetting hard-to-wet powders
Patent 5660466 Issued on August 26, 1997. Estimated Expiration Date: 
October 12, 2015. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
October 12, 2015. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent References 2224355 2746728 3029069 3164443 3542342 3741533 Mixing apparatus and method Process for making slush Spray jet polymer powder wetter Wetting chamber Patent #: 4643582 InventorsAssigneeApplicationNo. 446845 filed on 10/12/1995US Classes:366/137.1, JET OR SPRAY IMPINGING FREE-FALLING STREAM239/113, System fluid diverted239/424.5, Plural passages discharge one fluid to other239/425.5, Ambient air aspirated through inner flow path366/138, WITH FLUSHING OF MIXING CHAMBER366/173.2, Plural injectors for material from same source366/178.2, Feed means has plural identical outlets366/347COVER OR SHIELD FOR MIXING CHAMBERExaminersPrimary: Cooley, Charles E.Attorney, Agent or FirmForeign Patent References
International ClassesB01F 005/20B01F 015/02 AbstractApparatus for wetting particulate material comprises a duct 1 that is open at its base 2 and that is provided at its top 3 with a duct inlet 4 defined by inlet walls 5 down which water flows continuously from a weir 6 around the top of the walls. Sprays 19 at or just beneath the duct inlet 4 direct water downwardly so as to wet the particulate material. Preferably the apparatus is used for wetting friable particulate material, in which case the sprays direct water across the path of the downflowing particulate material so as to disintegrate it into individual particles and to wet these. Downflow of air is minimized by providing a cowl 9 over the top of the duct and by feeding the particulate material, generally by a screw feed 13, into a passage that leads from an inlet 15 that is exposed to the atmosphere to an outlet that discharges direct into the duct inlet 4.Field of SearchGravity typeJET OR SPRAY IMPINGING FREE-FALLING STREAM WITH FLUSHING OF MIXING CHAMBER Liquid injector within mixing chamber Plural injectors Plural injectors for material from same source Concentric Feed means has plural identical outlets Inner feeder passes through wall of outer feeder and extends along common axis at the wall Feed means has plural identical outlets STATIONARY MIXING CHAMBER COVER OR SHIELD FOR MIXING CHAMBER System fluid diverted Including movable means for varying point of convergence Combining of three or more separate fluid streams Concurrent or concentric flow means Flow means of one fluid surrounds the other at outlet Plural passages discharge one fluid to other Ambient air aspirated through inner flow path Liquid flow induces atmospheric air (e.g., faucet aerator) Three or more inlets to one stream from other | |
