Continuous mixing device, particulary suitable for preparing aqueous solutions of foam extinguisher for fire-fighting systems
US4899825A · kind A · utility
27Cited by
6References
8Claims
0Family size
Assignees
Inventors
Key dates
| Filing date | May 24, 1988 |
| Grant date | Feb 13, 1990 |
| Priority date | — |
| Expiry date | May 24, 2008 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01F35/831
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A device for continuously delivering a proportionately constant fire-fighting solution which comprises an extinguisher foam mixed with variable flow rates of fire fighting water. The device comprises a motor, which is a volumetric screw pump driven in reverse by the hydraulic pressure of the fire fighting water network. This hydraulic motor is mechanically connected to one or more volumetric pumps which proportionally meter the fire fighting foam extinguisher liquid into the network water.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.