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US Patent 6796704 - Apparatus and method for mixing components with a venturi arrangement
US Patent Issued on September 28, 2004
Estimated Patent Expiration Date:
June 6, 2020Estimated 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.
Estimated Patent Expiration Date:
June 6, 2020Estimated 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.AbstractAn eductor mixing device (10) has a main body or housing (28) of a generally cylindrical shape and an inner tube (42) for one component to be mixed with a liquid is mounted in main body (28) with a vortex chamber (56) formed in an annulus between the main body (28) and the inlet flow tube (42). Pressurized liquid enters the vortex chamber through a generally rectangular entrance opening (36) along an arcuate surface (42) which smoothly merges with the cylindrical surface (30) of the main body or housing (28). A liquid in a swirling motion moves in a descending helical path about inner tube (42) and passes through a gap G between coaxial frusto-conical surfaces (55) and (68) of the converging inner nozzle (52) of the inner tube (42) and an outer coaxial liquid nozzle (60) of diffuser ring (58) . A high velocity is created by the swirling liquid for exerting a suction or negative pressure at the lower end of inner nozzle (52) to draw the component to be mixed, such as a particulate material, into the swirling liquid stream where the swirling liquid and particulate material form a strong vortex to create a slurry in a minimal travel distance after passing inner converging nozzle (52) of particulate inner tube (42). | InventorApplicationNo. 09588210 filed on 06/06/2000US Classes:366/163.2, By venturi or jet pump type device366/165.2, Including deflector in chamber (deflector may be part of chamber wall)366/178.1ConcentricField of Search366/163.2, By venturi or jet pump type device366/165.1, Material introduced so as to cause rotary motion in mixing chamber (e.g., cyclonic)366/165.2, Including deflector in chamber (deflector may be part of chamber wall)366/165.5, Manifold in feed means366/167.1, Liquid injector within mixing chamber366/174.1, Deflector366/175.2, Injector directs material onto deflector366/176.1, Pump forces material through restriction (e.g., static emulsifier)366/178.1, Concentric366/178.2, Feed means has plural identical outlets366/178.3, Inner feeder passes through wall of outer feeder and extends along common axis at the wall366/181.1, Including chute or hopper with gravity discharge to mixing chamber137/888Combining by aspirationExaminersPrimary: Cooley, Charles E.Attorney, Agent or FirmUS Patent References1982479, 3298669, 3542342, 3741533, 3994480, Mixing methodIssued on: 11/30/1976 Inventor: Fothergill , et al.4186772, Eductor-mixer system Issued on: 02/05/1980 Inventor: Handleman4345841, Multi-stage centrifugal mixer Issued on: 08/24/1982 Inventor: Day4390284, Method and apparatus for wetting powder Issued on: 06/28/1983 Inventor: Hyde , et al.4407456, Mixing nozzle Issued on: 10/04/1983 Inventor: Daniel, deceased , et al.4531673, Spray jet polymer powder wetter Issued on: 07/30/1985 Inventor: Holland , et al.4538921, Apparatus and method for slurrying soda ash Issued on: 09/03/1985 Inventor: Kennedy4662759, Premix injection system for asphalt compositions Issued on: 05/05/1987 Inventor: Leibee , et al.4688945, Mixing apparatus Issued on: 08/25/1987 Inventor: Brazelton , et al.4884925, Apparatus and method for transfer and slurrying or dissolving hydratable dry bulk chemicals Issued on: 12/05/1989 Inventor: Kemp, et al.4971768, Diffuser with convoluted vortex generator Issued on: 11/20/1990 Inventor: Ealba, et al.5145256, Apparatus for treating effluents Issued on: 09/08/1992 Inventor: Wiemers, et al.5165452, Large angle diffuser diverter design for maximum pressure recovery Issued on: 11/24/1992 Inventor: Cheng5190374, Method and apparatus for continuously mixing well treatment fluids Issued on: 03/02/1993 Inventor: Harms, et al.5195851, Apparatus and method for transferring dry bulk materials having an improved unloading adapter Issued on: 03/23/1993 Inventor: Shepard, et al.5305610, Process and apparatus for producing nitrogen and oxygen Issued on: 04/26/1994 Inventor: Bennett, et al.5350543, Method and apparatus for aerating an aqueous solution Issued on: 09/27/1994 Inventor: Spradley5382411, Apparatus and method for continuously mixing fluids Issued on: 01/17/1995 Inventor: Allen5447394, Automatic flushing apparatus for a hydrator Issued on: 09/05/1995 Inventor: Shepard5507573, Method and a means for continuous, static mixing of thin layers Issued on: 04/16/1996 Inventor: Hiorth5549422, Automatic water flushing method for a hydrator Issued on: 08/27/1996 Inventor: Shepard5571281, Automatic cement mixing and density simulator and control system and equipment for oil well cementing Issued on: 11/05/1996 Inventor: Allen5660466, Apparatus and method for uniformly wetting hard-to-wet powders Issued on: 08/26/1997 Inventor: Hopson, et al.5716006, Jet pump having an improved nozzle and a diffuser Issued on: 02/10/1998 Inventor: Lott5857773, Polymer dissolving method and apparatus Issued on: 01/12/1999 Inventor: Tammelin5860451, Fluid admixture systems Issued on: 01/19/1999 Inventor: Raleigh, et al.5927338, Mixing eductor Issued on: 07/27/1999 Inventor: Boticki, et al.5979517, Bulk product filling device Issued on: 11/09/1999 Inventor: Wilson6024874, Hydrocyclone separator Issued on: 02/15/2000 Inventor: Lott6045255, Prewetting mixer Issued on: 04/04/2000 Inventor: Ogier6357906Method and device for mixing a bulk material with a fluid Issued on: 03/19/2002 Inventor: Baudoin, et al. Foreign Patent References
International ClassB01F 1502 |
