Bubble measurement cell
US5152175A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Nov 14, 1990 |
| Grant date | Oct 6, 1992 |
| Priority date | — |
| Expiry date | Nov 14, 2010 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N2021/8405
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A bubble measurement cell is provided for measuring size distribution of gas bubbles in a liquid. The bubble measurement cell is adapted for insertion in a flotation column having a transparent, vertically-oriented, bubble-viewing window. The bubble measurement cell includes an antechamber, for placement adjacent the window in the flotation column, the antechamber having a transparent rear face. The transparent bubble-viewing window and the transparent rear face allow light to enter in sufficient quantity to illuminate the bubbles enabling photographic imaging thereof. A forward, downwardly-pointing deflection wedge deflects upwardly-moving bubbles. A transparent viewing chamber is provided which is situated to the rear of the antechamber and which includes a rear face, a transparent front face spaced from the rear face, and a pair of inner, vertical lateral spacers. The transparent viewing chamber is bounded at its bottom by a pair of inner, transversely-running, wedges forming a narrow inlet, which leads to a region of the viewing chamber of larger cross-sectional area by being thicker and wider than the thickness and the width of the inlet. An outlet is provided at the upper end…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.