Particle separator
US4913807A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Oct 26, 1988 |
| Grant date | Apr 3, 1990 |
| Priority date | — |
| Expiry date | Oct 26, 2008 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB07B11/08
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
Method and apparatus (10) are provided for separating and classifying particles (48,50,56) by dispersing the particles within a fluid (52) that is upwardly flowing within a cone-shaped pipe (12) that has its large end (20) above its small end (18). Particles of similar size and shape (48,50) migrate to individual levels (A,B) within the flowing fluid. As the fluid is deflected by a plate (42) at the top end of the pipe (12), the smallest particles are collected on a shelf-like flange (40). Ever larger particles are collected as the flow rate of the fluid is increased. To prevent particle sticking on the walls (14) of the pipe (12), additional fluid is caused to flow into the pipe (12) through holes (68) that are specifically provided for that purpose. Sticking is further prevented by high frequency vibrators (70) that are positioned on the apparatus (10).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.