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    Planetary roller extruder with a degassing section
    3.
    发明授权
    Planetary roller extruder with a degassing section 有权

    公开(公告)号：US11613060B2

    公开(公告)日：2023-03-28

    申请号：US16560614

    申请日：2019-09-04

    申请人： Entex Rust & Mitschke GmbH

    发明人： Harald Rust

    IPC分类号： B29C48/76 ,  B29C48/655 ,  B29C48/44 ,  B29C48/285 ,  B29B7/48 ,  B29B7/74 ,  B29B7/84 ,  B29C48/435 ,  B29C48/25 ,  B29C48/68 ,  B29C48/685 ,  B29C48/80 ,  B29C48/875

    摘要： A planetary extruder for producing and processing polymers includes a degassing section. The extruder includes a housing and a bushing arranged therein. The bushing has an internal toothing with a pitch diameter and a root circle. An externally toothed central spindle is arranged within the housing. Planetary spindles rotate about the central spindle between the central spindle and the bushing. A heat transfer fluid is guided through fluid channels which extend helically along an outer surface of the bushing and guide the heat transfer fluid axially. A degassing opening is provided to which a negative pressure is applied for degassing. A minimum radial thickness (t) of the bushing between the root circle of the internal toothing on an inside of the bushing and a bottom of the fluid channels on an outside of the bushing is selected based on the pitch diameter (d) of the internal toothing.

    PLANETARY ROLLER EXTRUDER WITH A DEGASSING SECTION
    7.
    发明申请
    PLANETARY ROLLER EXTRUDER WITH A DEGASSING SECTION 审中-公开

    公开(公告)号：US20200001502A1

    公开(公告)日：2020-01-02

    申请号：US16560614

    申请日：2019-09-04

    申请人： Entex Rust & Mitschke GmbH

    发明人： Harald Rust

    IPC分类号： B29B7/84 ,  B29B7/48 ,  B29B7/74 ,  B29C48/285 ,  B29C48/44 ,  B29C48/59 ,  B29C48/655

    摘要： A planetary extruder for producing and processing polymers includes a degassing section. The extruder includes a housing and a bushing arranged therein. The bushing has an internal toothing with a pitch diameter and a root circle. An externally toothed central spindle is arranged within the housing. Planetary spindles rotate about the central spindle between the central spindle and the bushing. A heat transfer fluid is guided through fluid channels which extend helically along an outer surface of the bushing and guide the heat transfer fluid axially. A degassing opening is provided to which a negative pressure is applied for degassing. A minimum radial thickness (t) of the bushing between the root circle of the internal toothing on an inside of the bushing and a bottom of the fluid channels on an outside of the bushing is selected based on the pitch diameter (d) of the internal toothing.

    Feeder module in planetary roller extruder design
    9.
    发明授权
    Feeder module in planetary roller extruder design 有权

    公开(公告)号：US11485298B2

    公开(公告)日：2022-11-01

    申请号：US16462217

    申请日：2018-07-03

    申请人： Entex Rust & Mitschke GmbH

    发明人： Harald Rust

    IPC分类号： B29C48/655 ,  B60R13/08 ,  B29C48/44 ,  B29C48/285 ,  B29B7/48 ,  B29B7/74 ,  B29B7/84 ,  B29C48/435 ,  B29C48/60 ,  B60N3/04

    摘要： A planetary roller extruder section forms a feed part of an extruder. The planetary roller extruder has an internally toothed housing and an externally toothed central spindle disposed centrally within and at a distance from the housing. Planetary spindles are arranged to rotate in a void between the central spindle and the housing. Each planetary spindle has an external toothing meshing with both the housing and the central spindle. At least one planetary spindle has two axially spaced areas with less than a full set of teeth. Those axially spaced areas include a first area having a first number of teeth and a second area having a second number of teeth. The second number of teeth is less than a full set of teeth and more than the first number of teeth.