Mechanically controlled vacuum throttle for a continuous dense phase particulate material conveying system and method
US9181044B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Feb 14, 2012 |
| Grant date | Nov 10, 2015 |
| Priority date | — |
| Expiry date | Oct 5, 2033 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB65G53/66
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
A mechanically-controlled vacuum throttle for a continuous dense phase pneumatic conveying system and related method is provided. The system includes a pneumatic conveyance line, a particulate material insertion assembly, a positive displacement blower, a transport fluid intake assembly, and a vacuum throttling assembly. The vacuum throttling assembly is configured to control the flow of air mass density into the blower and through the conveyance line. A portion of the vacuum throttling assembly is tied in to the conveyance line pressure downstream of the blower and adjusts the air mass density flow depending on the downstream pressure. Preferably, the vacuum throttling assembly includes an obstruction element and an opening collar, where the obstruction element is moveable relative to the opening collar and the air mass density flow is adjusted depending on the amount of movement of the obstruction element relative to the opening collar.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.