IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
UP-0596654
(2004-10-23)
|
등록번호 |
US-7824544
(2010-11-22)
|
우선권정보 |
DE-203 19 752 U(2003-12-20) |
국제출원번호 |
PCT/EP2004/011999
(2004-10-23)
|
§371/§102 date |
20061213
(20061213)
|
국제공개번호 |
WO05/063357
(2005-07-14)
|
발명자
/ 주소 |
|
출원인 / 주소 |
- Ettlinger Kunststoffmaschinen GmbH
|
대리인 / 주소 |
|
인용정보 |
피인용 횟수 :
1 인용 특허 :
6 |
초록
▼
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
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.
대표청구항
▼
The invention claimed is: 1. A device for continuously filtering material mixtures, especially for separating impurities from plastic melts, the device usable in an apparatus having at least one stripper operable to remove impurities detained on a filter element, the device comprising: a contact me
The invention claimed is: 1. A device for continuously filtering material mixtures, especially for separating impurities from plastic melts, the device usable in an apparatus having at least one stripper operable to remove impurities detained on a filter element, the device comprising: a contact member operable to press the stripper against the filter element; a pressure sensor for detecting the pressure of the material mixture upstream from the filter element; and an actuator connected to the pressure sensor and the contact member, operable to set a pressure applied to the stripper by said contact member, whereby a contact pressure of the stripper against the filter element is a function of the pressure detected by the pressure sensor. 2. The device according to claim 1, wherein the pressure sensor is a hydraulic transducer cylinder. 3. The device according to claim 2, wherein the hydraulic transducer cylinder contains a pressure piston displaceable within a piston housing, and a pressure bolt projecting into an inlet channel. 4. The device according to claim 1, wherein the actuator is a hydraulic adjusting cylinder. 5. The device according to claim 4, wherein the hydraulic adjusting cylinder contains a pressure piston displaceable within a cylinder housing and the contact member is a piston rod connected to the stripper. 6. The device according to claim 1, wherein the pressure sensor and the actuator are connected to each other via a hydraulic line. 7. The device according to claim 1, wherein the pressure sensor is an electric pressure transducer. 8. The device according to claim 7, wherein the electric pressure transducer is connected to the actuator via control electronics and a pressure control valve. 9. The device according to claim 1, wherein the filter element is motor-driven and is rotatable about a center axis. 10. The device according to claim 1, wherein the stripper is arranged at a diagonal angle with respect to a rotational axis of the filter element. 11. The device according to claim 1, wherein the stripper is arranged at a contact angle relative to a center plane of the filter element. 12. The device according to claim 11, wherein the contact angle of the stripper is variable. 13. The device according to claim 1, further including a rotatable spiral conveyor in the direct vicinity of the stripper for transporting away the impurities removed by the stripper from the filter element. 14. The device according to claim 13, wherein the filter element rotates and is motor-driven, and the spiral conveyor can be driven separately. 15. The device according to claim 13, wherein the filter element is rotatable, and the rotational speed of the spiral conveyor and filter element are separately controllable. 16. A device for continuously filtering material mixtures delivered to a filter element under pressure, comprising: a housing; a hollow, cylindrically-shaped filter element arranged within the housing; at least one stripper pressable against the filter element and operable to remove impurities filtered by the filter element due to a relative movement of the filter element and the stripper; and at least one contact assembly including a pressure sensor for detecting the pressure of the delivered material mixture, and an actuator connected to the pressure sensor and the stripper, operative to set a contact pressure of the stripper against the filter as a function of the pressure detected by the pressure sensor. 17. A device for continuously filtering material mixtures delivered to a filter element under pressure, comprising: a housing; a hollow, cylindrically-shaped filter element arranged within the housing; at least one stripper edge pressable in the direction of the filter element and operable thereby to separate impurities filtered by the filter element due to a relative rotational movement of the filter element and the stripper; and at least one contact assembly including a pressure sensor for detecting the pressure of the delivered material mixture, and an actuator connected to the stripper and responsive to the pressure sensor, the actuator operative to press the stripper in the direction of the filter element with a force which corresponds to the pressure detected by the pressure sensor. 18. The device of claim 17, wherein the actuator is selected from the group consisting of: electrically controlled pressure control valve, electric pressure transducer, hydraulic pressure transducer. 19. The device of claim 17, wherein one of the filter element or stripper rotates in relation to the other. 20. The device of claim 17, further comprising: rotational waste removal means for conducting waste away from the stripper; and means for controlling a rotational speed of said filter element and said rotational waste removal means whereby the relative speed of the waste removal means and said filter element are independently controllable.
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