Low-shear feeding system for use with centrifuges
US5823937A · kind A · utility
Inventor
Key dates
| Filing date | Jul 9, 1996 |
| Grant date | Oct 20, 1998 |
| Priority date | — |
| Expiry date | Jul 9, 2016 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB04B15/08
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A centrifugal separator for separating the solids component of a feed liquid comprises a bowl that is rotatable about a vertically disposed axis. The bowl has an interior wall, an open upper end, a closed lower end, and a generally cylindrical portion. A feed cone assembly is located at the bottom of the closed conical lower end. The feed cone assembly includes a conical outer wall and an integrally-formed, truncated cusp-shaped hub which extends upwardly towards the interior of the bowl. An annular chamber is located between the conical outer wall and the hub. A feed pipe extends from the upper end of the bowl to the lower end and includes a feed outlet which is sized and shaped to fit within the annular channel. Liquid feed is introduced into the annular channel through the feed pipe while the bowl rotates. Centrifugal force moves liquid in the annular channel outwardly along the smooth contours of the channel and onto the conical wall of the feed cone. The liquid gradually and gently moves up along the outwardly tapering conical wall, increasing its rotational velocity until it blends with the liquid located within the spinning bowl. In another embodiment, the bowl includes an o…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.