Diverter valve for an extruder, in particular a twin-screw...

Details Diverter valve for an extruder, in particular a twin-screw... Diverter valve for an extruder, in particular a twin-screw...

2006-03-14

2006-03-14

Fox, John (Department: 3753)

Fluid handling

Systems

With flow control means for branched passages

C100S145000

Reexamination Certificate

active

07011112

ABSTRACT:
A diverter valve is provided for an extruder, especially a twin-screw extruder, that allows for the replacement of the extruder screws without dismounting the same. The diverter valve includes a valve housing with a first flow passage, which can be fastened indirectly or directly to an extruder cylinder, whereby the valve housing can be arranged on the extruder cylinder with the first flow passage aligned with the screw area. The cross section of the first flow passage is constructed large enough to pass extruder screws arranged in the extruder through the flow passage. The diverter valve further includes a valve bolt having its axis arranged basically perpendicular in relation to the direction of flow of a liquid or a melt, with at least an additional flow passage, which can be oriented in alignment with the first flow passage of the valve housing and whose cross section is likewise constructed large enough to pass extruder screws arranged in the extruder through this second flow passage, whereby the valve bolt is arranged adjustably in the valve housing.

REFERENCES:
patent: 3589163 (1971-06-01), Byrne et al.
patent: 4321026 (1982-03-01), Lambertus
patent: 4416605 (1983-11-01), Konno et al.
patent: 4984977 (1991-01-01), Grimminger et al.
patent: 6609819 (2003-08-01), Hauck et al.
patent: 19 37 862 (1971-02-01), None
patent: 21 53 962 (1972-08-01), None
patent: 101 51 434 (2003-04-01), None

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