Nozzle for the mixing of at least two flowable reaction componen

Details Nozzle for the mixing of at least two flowable reaction componen Nozzle for the mixing of at least two flowable reaction componen

1988-03-01

1990-04-17

Hornsby, Harvey C.

Agitating

Having specified feed means

Returning material to supply

422131, B01F 1300, B29F 774

Patent

active

049175025

ABSTRACT:
The invention relates to a nozzle for mixing at least two flowable (and in particular foam-forming) reaction components comprising a housing; component supply pipes leading into the housing; a housing bore arranged in the housing having a coaxial outlet channel in its end face; at least one needle casing arranged coaxially in the housing bore; an injection needle guided coaxially in the needle casing; a first chamber arranged between the wall of the housing bore and the needle casing with one of the component supply pipes opening into said first chamber; a second chamber arranged between the needle casing and the injection needle, with another component supply pipe opening into said second chamber; wherein in the closed state, said injection needle forms a tight fit with the internal end face of the needle casing, and the external end face of said needle casing forms a tight fit with the internal end face of the housing bore; and wherein in the open state, said injection needle frees a coaxial nozzle opening of the needle casing and an opening is formed between the external end face of the needle casing and the internal end face of housing bore. The invention also relates to a process for operating this nozzle.

REFERENCES:
patent: 3068075 (1962-12-01), Boekemeier
patent: 3083913 (1962-04-01), Coffman et al.
patent: 3434805 (1969-03-01), Bar
patent: 3771963 (1973-11-01), Breer et al.
patent: 3913892 (1975-10-01), Ersfeld et al.
patent: 3947177 (1976-03-01), Eckardt
patent: 3972664 (1976-08-01), Fillmann
patent: 4013391 (1977-03-01), Boden et al.
patent: 4095931 (1978-06-01), Reitan
patent: 4188356 (1980-02-01), Weber et al.
patent: 4189070 (1980-02-01), Macosko et al.
patent: 4291991 (1981-09-01), Schulte et al.
patent: 4314955 (1982-02-01), Boden et al.
patent: 4333608 (1982-06-01), Hendry
patent: 4440500 (1984-04-01), Schneider
patent: 4452917 (1984-06-01), Proksa et al.
patent: 4473531 (1984-09-01), Macosko et al.

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