Precision injected liquid chemical mixing apparatus
US6409375B1 · kind B1 · utility
Inventor
Key dates
| Filing date | Sep 27, 2000 |
| Grant date | Jun 25, 2002 |
| Priority date | — |
| Expiry date | Sep 27, 2020 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB05B7/26
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
The invention relates to an agricultural spray apparatus whereby chemical to be sprayed is injected into spray liquid before the mixture of liquid and chemical is sprayed. The invention comprises a closed loop circulating system having a pump with an inlet and an outlet, a loop line connecting the pump inlet and outlet, a spray nozzle connected to the loop line downstream of the pump via a spray line, a spray liquid inlet connected to the loop line upstream of the pump, a chemical injection system connected to the loop line upstream of the pump and downstream of the spray liquid inlet, a venturi device, a return line, an agitation line, and a valve device in the spray line, reversing liquid flowing to the spray nozzle through the agitation line past the spray nozzle and through the return line.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.