IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0981075
(1997-11-25)
|
우선권정보 |
DE-0019907 (1995-05-13) |
국제출원번호 |
PCT/DE96/00846
(1996-05-08)
|
§371/§102 date |
19971125
(19971125)
|
국제공개번호 |
WO-9638286
(1996-12-05)
|
발명자
/ 주소 |
- Bruckmann Theodor,DEX
- Simon Ralf,DEX
|
출원인 / 주소 |
- Firma Kreyenborg Verwaltungen und Beteilgungen GmbH & Co. KG, DEX
|
대리인 / 주소 |
Merchant, Gould, Smith, Edell, Welter & Schmidt
|
인용정보 |
피인용 횟수 :
4 인용 특허 :
7 |
초록
▼
In a filter changing device with a flow path for the plastic in which one two or more filters can be inserted into the flow path as desired, the invention proposes to fit the filter support in such a way that it can assume a working back rinse and filter change position, in which, in the back rinse
In a filter changing device with a flow path for the plastic in which one two or more filters can be inserted into the flow path as desired, the invention proposes to fit the filter support in such a way that it can assume a working back rinse and filter change position, in which, in the back rinse position, the plastic is caused to reverse its direction of flow through two interconnected flow channels without permitting air to penetrate into the filter changing device and in which there is free access to one of the filters in the filter changing positions. As the back rinse position can succeed a filter changing position, it is possible to clear the whole filter changing device of occluded air before a plastic processing plant starts production.
대표청구항
▼
[ We claim:] [1.] Screen-changing device for plastics processing installations,having a housing,and having a screen support mounted movably in the housing,the housing and the screen support jointly forming a flow path for liquid polymer,and the housing forming a first section of the flow path, which
[ We claim:] [1.] Screen-changing device for plastics processing installations,having a housing,and having a screen support mounted movably in the housing,the housing and the screen support jointly forming a flow path for liquid polymer,and the housing forming a first section of the flow path, which has a main inlet channel,and the housing also forming a third section of the flow path, which has an outlet channel,while the screen support forms a second, middle section of the flow path, in which two screens are arranged,and each screen can be moved by a movement of the screen support into the flow path or out of the flow path, according to choice,and the screen-changing device having a channel division of the main inlet channel into at least two inlet channels,and a channel convergence, in which the inlet channels run together to form the outlet channel,a screen being arranged in each inlet channel,and the screen support being such that it can be moved out of an operating position, in which a flow path runs from the main inlet channel and through both inlet channels to the outlet channel,into a screen-changing position, in which the screen support is arranged offset with respect to the first and third sections of the flow path and in which an inlet channel creates free access to the screen arranged in it, characterizedin that the channel convergence of the inlet channels (8) is formed in the screen support (3),and in that the screen support (3) can be moved into a back-flushing position, in which the outlet channel (9) formed in the screen support (3) is arranged offset from the third section (7) of the flow path (4) in front of a wallin the back-flushing position, one inlet channel (8) being connected to the first section (5) of the flow path (4),and, in the back-flushing position, a second inlet channel (8) being connected to a back-flushing line (11) provided in the housing (2).
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