Fluid injectors

Details Fluid injectors Fluid injectors

1984-05-07

1987-11-10

Kashnikow, Andres

Fluid sprinkling, spraying, and diffusing

With system fluid relief or return to supply

Recirculation within nozzle

13761406, 2511499, 239571, 239574, 239578, B05B 903

Patent

active

047053305

ABSTRACT:
A tip shut-off fluid injector F has its injection device 1 inset to a fixed female interlocking terminal 2 when in the firing position with which a change-over valve 4 is connected by pipes P or is made integral. The terminal 2 includes valves 8 and 9 and, optionally, a by-pass valve 10. A gearbox 12 connects between the valves 8, 9 and 10 and a handwheel 11. Rotation of the handwheel 11 inserts or retracts the injection device 1 to or from the firing position and also, via the gearbox 12, rotates the valves 8, 9 and 10 between open and closed positions. Before the injection device 1 can be retracted, the handwheel 11 must be initially rotated to rotate the valves 8 and 9 to closed positions to isolate the fluid supply from the injection device 1 and, optionally, to open the by-pass valve 10 to allow fluid to circulate from the supply through the terminal 2 back to return. Conversely, it is not until the injection device 1 is inserted that the valves 8 and 9 can be rotated by the handwheel 11 to open positions to communicate the fluid supply with the injection device 1 and, optionally, close the by-pass valve 10. The change-over valve 4 may include a direct flow path interconnecting the fluid supply and return when the injection device 1 is retracted. Other kinds of fluid injectors incorporating the invention are envisaged.

REFERENCES:
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patent: 2263913 (1941-11-01), Bargeboer
patent: 2334679 (1943-11-01), Mason et al.
patent: 3144075 (1964-08-01), Jackson
patent: 3211178 (1965-10-01), Kiszko
patent: 3212555 (1965-10-01), Schuss et al.
patent: 3423063 (1969-01-01), German
patent: 3587970 (1971-06-01), Tindall
patent: 3693655 (1972-09-01), Frisk
patent: 3844479 (1974-10-01), Needham
patent: 4378090 (1983-03-01), Cohen et al.
patent: 4495967 (1985-01-01), Needham et al.
patent: 4552333 (1985-11-01), Niemi

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