High pressure feeding
US4372711A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jul 30, 1981 |
| Grant date | Feb 8, 1983 |
| Priority date | — |
| Expiry date | Jul 30, 2001 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB65G53/30
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
A high transfer pressure device, and method, especially adapted for continuously conveying hard particulate material such as coal; and a screen specifically for use in such conveying. The high pressure transfer device includes a pocketed rotor containing a pair of diametrically through-going pockets perpendicular to each other, a housing enclosing the rotor and having four ports spaced around the periphery thereof, and a screen operatively associated with the rotor or the ports for screening out particles above a predetermined size that are conveyed in liquid passed through the device. Preferably the screen is associated with one of the ports of the housing and fluid injection nozzles are associated with the screen for injecting liquid under pressure toward the screen to effect dislodgement of any particles that may be lodged in the screen and thereby prevent damage to the screen. The operation of the fluid injection nozzles is timed to the rotation of the rotor. Alternatively, a particularly designed screen made from bars that are square or circular in cross-section may be located in an enlarged middle portion of each of the pockets.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.