Transport air control
US5143485A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jun 11, 1990 |
| Grant date | Sep 1, 1992 |
| Priority date | — |
| Expiry date | Jun 11, 2010 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD01G31/006
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A method of operating a pneumatic transport system in a process line of a spinning mill, wherein fiber flocks are transported through ducts by means fo airflows generated by fans and these airflows can be influenced by units such as fans, adjustable flats, leakage air openings and induction boxes. In critical regions the respectively prevailing static pressure is measured by means of pressure sensors and, in so far as this pressure lies outside of a predetermined desired range a correction is first made at one of the units which contributes to determining this pressure in the sense of changing the pressure into the desired range or in the direction towards the desired range. The effect of this change in other critical regions effected thereby is then determined with reference to the pressure measured there and a change is subsequently effected of a further unit responsible for the pressure in these regions. The above process steps are repeated in the sense of an iterative adaptation to the desired ranges, i.e. until the measured pressures lie in the respectively provided desired ranges.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.