Nozzle for mixing at least two flowable reaction components

Claim 1

A nozzle for mixing at least two flowable reaction components comprising: (a) a nozzle housing; (b) a guide bore arranged in said housing, said guide bore being limited on one end by a sealing surface which conically tapers to an axial outlet channel, and, being sealed on the other end by a cover having an insert located therein, said insert having an axial bore arranged therein, (c) a movable needle casing located between said insert and said sealing surface, the movement of said needle casing being restricted on one end by said insert and being restricted on the other end by said sealing surface, wherein said needle casing has a base which has an outlet opening in alignment with said axial outlet channel and wherein the outer surface of said base forms a tight fit with said sealing surface in the closed position, (d) a chamber in the interior of said needle casing, said chamber being connected to a first component supply line, and wherein said outlet opening is located on one end of said chamber, and wherein the other end of said chamber is limited by said insert, (e) a nozzle needle guided in said axial bore and in said chamber, wherein said needle has a plug at one end, which plug fills said outlet opening and said outlet channel in the closed position, and wherein said needle is forceably controllable at the other end, and (f) a second component supply line, said second supply line opening below said base, whereby in the closed position, said second supply line is closed by said base.