Chemical injector system for piston pumps
US4824342A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Feb 16, 1988 |
| Grant date | Apr 25, 1989 |
| Priority date | — |
| Expiry date | Feb 16, 2008 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF04B53/1032
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
An injector device for a plunger-type pump of the type having one or more cylinders, an intake valve for each cylinder operatively disposed between the pump's low pressure inlet port and each of its cylinders and outlet valve(s) for each cylinder operatively disposed between the cylinders and the pump's high pressure outlet port, where the intake and outlet valves are held in place by removable threaded plugs which afford access to the valves so that they can be repaired or replaced. The injector device comprises a threaded plug member adapted to replace one of the removable plugs used to hold an intake valve in place, but also includes a longitudinal bore in which is mounted a one-way check valve. The inlet side of the check valve is adapted to be coupled to a chemical supply tank. Also, a restrictor is placed between the particular intake valve held in place by the injector plug and the pump's inlet port. During a suction stroke of that one plunger, both a first fluid and the chemical from the supply tank are drawn into the one cylinder. Here, the two fluids mix before being ejected through the pump's high pressure outlet during the pressure stroke of the particular plunger with …
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.