Controlling method and a measuring mixer for liquids and powders

Patent 4830508 Issued on May 16, 1989. Estimated Expiration Date:

May 2, 2008. 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.

Abstract Claims Description Full Text

Patent References

3860030

Automatic continuous mixer apparatus
Patent #: 4209258
Issued on: 06/24/1980
Inventor: Oakes

Additive inventory control, batching and delivery system
Patent #: 4525071
Issued on: 06/25/1985
Inventor: Horowitz , et al.

Grain mixing system
Patent #: 4581704
Issued on: 04/08/1986
Inventor: Mitsukawa

System for batch loading coal into railroad cars Patent #: 4629392
Issued on: 12/16/1986
Inventor: Campbell , et al.

Inventors

Application

No. 07/189099 filed on 05/02/1988

US Classes:

366/141, WITH WEIGHING137/88, Mixture condition maintaining or sensing222/56, Delivery from source controlled by quantity in discharging receiver366/152.1, Proportioning plural material components366/154.2, By vibration366/156.2, Plural screw feeders366/18, By weight366/182.4, Including valve in feed conduit366/20, By screw conveyor charging means366/21, By varying opening of charging means706/900FUZZY LOGIC

Examiners

Primary: Jenkins, Robert W.

Attorney, Agent or Firm

Sughrue, Mion, Zinn, Macpeak, and Seas

International Classes

G05D 11/13 (20060101)
G05D 11/00 (20060101)
B01F 13/00 (20060101)
B01F 15/04 (20060101)
B01F 13/10 (20060101)
B01F 3/08 (20060101)
B01F 3/00 (20060101)
B01F 3/12 (20060101)
B01F 3/18 (20060101)

Foreign Application Priority Data

1987-05-01 JP

Abstract

A measuring mixer for use with either liquids or powders in which different supply systems supply different stock liquids or powders to a receiving container from supply containers. A continuously variable flow regulator is associated with each supply container. The cumulative weight of the receiving container is measured and compared with a target weight. Then a computation section calculates a desired flow rate based upon both the deviation from the target weight and a time variation thereof. This calculation is preferably done according to fuzzy inference. The desired flow rate is then used to control a selected one of the flow regulators so that the measurement is sequentially performed between supply systems. Optionally, the receiving container can be movable between the different supply systems.