发明名称 |
Filling level monitoring device |
摘要 |
A device for monitoring the filling level of the degassing space in an extruder used for processing thermoplastic materials comprises a level detection orifice located in the degassing dome or jacket of the extruder which opening is connected to a conduit. The conduit leads through a regulator device to a gas source. Connected to the conduit, between the regulator device and the orifice, is a pressure sensor such as a pressure difference switch. If the level of molten material in the dome rises above a preselected level, it blocks the opening and produces a back-pressure in the conduit. The switch is automatically actuated by this back-pressure and produces a signal. Appropriate action can then be taken to prevent the further rise of the molten material in the dome and to prevent blockage of the degassing device.
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申请公布号 |
US4484878(A) |
申请公布日期 |
1984.11.27 |
申请号 |
US19830551921 |
申请日期 |
1983.11.15 |
申请人 |
HERMANN BERSTORFF MASCHINENBAU GMBH |
发明人 |
ANDERS, DIETMAR;VOIGT, JURGEN;KRUSE, HEINRICH |
分类号 |
B29B7/00;B29C47/00;B29C47/38;B29C47/76;B29C47/92;B29C47/96;G01F23/16;(IPC1-7):B29F3/03 |
主分类号 |
B29B7/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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