Chemical mixing and dispensing system
US4976137A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jan 6, 1989 |
| Grant date | Dec 11, 1990 |
| Priority date | — |
| Expiry date | Jan 6, 2009 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01F2101/24
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
An apparatus and method for mixing and dispensing chemical solutions are disclosed. The blending unit (11) includes a manifold (38) having a plurality of chemical inlet ports (39), a water inlet port (45), and an outlet port (46). A plurality of pumps (43) and valves (41) are associated with the chemical inlet ports (39). The outlet port (46) is connected to dispensing outlets (25, 29) for dispensing the chemical solutions and water into a container 16. The apparatus (10) also includes a quality control systems, including a conductivity cell (50), a weight measurement station (26), and a volume flow measurement device. The apparatus (10) also includes an electronic control unit (70) associated with the pumps (43) and valves (41) to operate them in response to a pre-selected volume, sequential combination and concentration of chemicals.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.