Flow divider with diverter valve

Details Flow divider with diverter valve Flow divider with diverter valve

1997-01-10

1998-01-27

Woo, Jay H.

Fluid handling

Systems

With flow control means for branched passages

4253824, 425464, F16K 1102

Patent

active

057113491

ABSTRACT:
The present invention provides a dual flow divider for use on an extruder. The flow divider is configured to separate the melt stream received from the extruder at a central entry into two flow channels, the respective channels being formed as nearly to identical (mirror image) as is practically possible. The relative flow in the respective channels can be varied by rotating a diverter valve that extends to a position adjacent the central entry of the flow divider, i.e., where the flow begins to divide. The flow channels and control end of the diverter valve are specially configured to avoid any shape or surface conditions that would impose heat-generating restrictions to material flow, and/or allow areas of stagnation in the flow stream. More specifically, the flow channels are machined to provide smooth, streamlined transitions at all points along the flow path. The surfaces of the flow channels which intersect with the diverter valve do so at a sharp edge; this geometry blends the surfaces of the channels and valve while also serving as a "wiper" when the valve is rotated.

REFERENCES:
patent: 3199537 (1965-08-01), Swanson
patent: 3545489 (1970-12-01), Brown et al.
patent: 3901636 (1975-08-01), Zink et al.
patent: 4049105 (1977-09-01), Kindersley
patent: 4055280 (1977-10-01), Kohl et al.
patent: 4836250 (1989-06-01), Krambrock
patent: 4840028 (1989-06-01), Kusuda et al.

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