Apparatus for producing a reaction mixture

Details Apparatus for producing a reaction mixture Apparatus for producing a reaction mixture

1982-04-21

1984-10-02

Rolla, Joseph J.

Dispensing

Plural sources, compartment, containers and/or spaced jacket

With common discharge

251332, 251122, B67D 560

Patent

active

044743106

ABSTRACT:
The present invention is directed to an apparatus for producing a reaction mixture from at least two fluid components comprising: (A) a storage container for each component; (B) feed pipes leading from each storage container via metering pumps to injection nozzles; (C) return pipes leading from each injection nozzle to the storage containers; (D) the injection nozzles opening into the mixing chamber of a mixhead, the mixhead having an outlet opening downstream of the injection nozzles, each injection nozzle comprising (i) a housing, (ii) a bore arranged in the housing, the bore connected to a feed pipe and a return pipe, (iii) a nozzle needle within the bore, the nozzle needle being provided with (a) an annular groove for connecting the feed pipe and the return pipe, (b) a sealing surface, and (c) a needle spindle, (iv) a sealing surface in the housing, the sealing surface adapted to contact the sealing surface of the nozzle needle, and (v) a central nozzle bore located in the sealing surface (vi) wherein the needle spindle is adapted to pass into and/or through the central nozzle bore; characterized in the (E) the nozzle needle and the needle spindle are separate parts, wherein the needle spindle consists of a ductile, highly elastic steel and is replaceably-mounted in the nozzle needle and surrounded by a recess formed in the nozzle needle.

REFERENCES:
patent: 2526735 (1950-10-01), Duce
patent: 3057372 (1962-10-01), Sutton et al.
patent: 3095900 (1963-07-01), Newhall
patent: 3168217 (1965-02-01), Nilsen et al.
patent: 3223100 (1966-03-01), Peterson
patent: 3409174 (1968-11-01), Radcliffe et al.
patent: 3858852 (1975-01-01), Breer et al.
patent: 4099652 (1978-07-01), Breer
patent: 4368847 (1983-01-01), Ersfeld

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