Automatic chemical solution mixing unit
US4415446A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Feb 4, 1982 |
| Grant date | Nov 15, 1983 |
| Priority date | — |
| Expiry date | Feb 4, 2002 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC02F1/686
- WIPO fieldEnvironmental technology
- WIPO sectorChemistry
Abstract
A low cost automatic system for making up a chemical solution for use in a water treatment facility includes a mixing tank having high and low liquid level switches disposed therein. A water supply line having a remotely-controlled solenoid valve supplies water to the mixing tank. A pressure regulator in the water supply line maintains the water pressure in the line between about 5 pounds per square inch and 125 pounds per square inch. Water treatment chemicals are stored in a supply tank and are fed by a metering pump to the mixing tank through a supply line. An electrical control circuit is responsive to the high and low liquid level switches in the tank. The control circuit operates the solenoid valve in the water supply line and the chemical pump as required to maintain a supply of chemical solution in the mixing tank.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.