Powdery/granular material flowability evaluation apparatus and method
US8087314B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 16, 2010 |
| Grant date | Jan 3, 2012 |
| Priority date | — |
| Expiry date | Aug 8, 2030 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N33/0091
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A powdery/granular material flowability evaluation apparatus and a powdery/granular material flowability evaluation method are provided to evaluate the flowability of a powdery/granular material in a dynamic state of the powdery/granular material. The powdery/granular material flowability evaluation apparatus (A) has a hopper (111) for storing a powdery/granular material to be measured, a vertical tube (11) having a flow-in port (1121) connected with a discharge port (1112) of the hopper (111) through which the powdery/granular material is discharged, a vibrator (2) for giving vibration to the tube (11), a laser vibrometer (3) for measuring the amplitude of the tube (11), an electric balance (4) for measuring the weight of the powdery/granular material fallen through the tube 11 from the hopper (111), and an evaluation value calculating section (512) for calculating an evaluation value evaluating the flowability of the powdery/granular material based on the measured amplitude and weight.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.