Device for continuously filtering material mixtures

Details Device for continuously filtering material mixtures Device for continuously filtering material mixtures

2004-10-23

2010-11-02

Cecil, Terry K (Department: 1797)

Liquid purification or separation

With alarm, indicator, register, recorder, signal or...

Fluid pressure responsive

C210S106000, C210S107000, C210S396000

Reexamination Certificate

active

07824544

ABSTRACT:
The invention relates to a device which is used to continuously filter material mixtures, in particular for separating impurities from plastic melts. The device includes a hollow cylindrically-shaped filter element (2) which is arranged inside a housing (1), an annular chamber (22) which is defined from the outside of the filter element (2) and an inner wall of the housing, and at least one stripper (23) which can be pressed onto the filter body by an adjusting device. The stripper is used to remove the impurities detained on the filter element (2) due to a relative movement of the filter element (2) and the stripper (23). The adjusting device contains a pressure sensor (42, 53) which is used to detect the pressure of the material mixture upstream from the filter body and an actuator (43) which is connected to the pressure sensor, the actuator being used to adjust the pressure of the stripper (23) according to the pressure detected by the pressure sensor.

REFERENCES:
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AT 410759 B, English Abstract Jun. 2003.
International Search Report PCT/EP2004/011999.
International Preliminary Report on Patentability PCT/EP2004/011999.
Written Opinion PCT/EP2004/011999.

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