Agitating – Having interrelated feed and discharge means – Recirculating from and to mixing chamber
Patent
1990-01-16
1990-09-11
Jenkins, Robert W.
Agitating
Having interrelated feed and discharge means
Recirculating from and to mixing chamber
366139, 366153, B01F 1502
Patent
active
049557238
ABSTRACT:
An apparatus for combining powered and liquid constituents to form a slurry, comprises a first tank for initially holding a quantity of liquid and a second tank having an upper and a lower end. A first conduit has a valve extending from the first tank to the second tank. A control means responsive to the liquid level in the second tank closes the valve when the liquid in the second tank reaches a predetermined maximum level. This maximum level is substantially lower than the full volumetric capacity of the second tank so that an open chamber is formed above the maximum liquid level. A vacuum pump attached to the upper end of said second tank creates a reduced pressure in its open chamber. A chamber conveying conduit extending through the upper end of the second tank has a movable exterior section with an outer end opening and a fixed interior section within the second tank having an outlet extending slightly above the maximum liquid level so that a low pressure condition is created within the open chamber above the maximum liquid level and causes an airstream in the conveying conduit which enables powdered material to be sucked into the second tank as mixing occurs with liquid therein to form a slurry.
REFERENCES:
patent: 3969314 (1976-07-01), Grigull
patent: 4045004 (1977-08-01), Berger
patent: 4444508 (1984-04-01), Kreuer
patent: 4486100 (1984-12-01), Endo
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