• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:

    公开号:AT510263A4
    申请号:T0172610
    申请日:2010-10-18
    公开日:2012-03-15
    发明作者:
    申请人:Schulz Helmuth Ing；
    IPC主号:
    专利说明:

    ♦ ♦ f »» «-1 - > (3739) czi / pe
    The invention relates to a device for extruding thermoplastic material, with a screw extruder, which can be fed through an inlet of its housing by a feeder conveyor with plastic material from a storage container, wherein a discharge device for evacuated gases and a control device are provided.
    When processing waste material into plastic granules, care must be taken that the final product is a granulate that is suitable for further processing. It is necessary to clean the old material as possible from impurities liquids and gases in particular. A device of the aforementioned type is the subject of AT 504.723. Both in this patent and in other references elaborate measures for cleaning the plastic material are provided. The present invention is concerned primarily with the necessary steps for degassing the plastic material. According to said patent, the plastic material is conveyed from the reservoir into an open inlet of the extruder housing and a connection for a vacuum line is provided in the working area of the extruder at a distance from the inlet. with the aid of which the excreted during extrusion gases are sucked. This measure does not always lead to a sufficient degassing and subsequent measures are required to finally obtain a sufficiently degassed granules. One of these measures is to monitor the weight of the initially produced granules and, in the case of a reduced weight, to re-feed this granulate fraction to the extrusion or, if contaminants are found, to precipitate it together with these impurities.
    • «MM -2-
    The object of the invention is therefore to provide a device by means of which the problem of degassing can only be solved properly if possible during a passage through the extruder.
    This object is achieved according to the invention in that the feeder conveyor designed as a controllable metering conveyor is arranged in a conveyor housing close to the inlet and connected to the suction device. Thus, at least a large part of the existing gas inclusions is sucked off before entering the screw extruder. Of course, the extruder itself can be connected to a further suction device.
    In the course of a further improvement of the mode of action is intended to heat the plastic material before being fed to the extruder and thus expel the gases for the extraction before entering the extruder. This heating can take place, for example, by attaching a heating device to the conveyor housing itself, so that the material is heated, dried and degassed during the passage. At present, at best in combination with the mentioned measure an embodiment is preferred, according to which the feeder conveyor is also tightly connected to the reservoir, which latter is tightly closed, formed to a pretreatment of the plastic material heated and connected to the or a suction device. The tight closure during the heating phase prevents unwanted access of air, so that the vacuum can be maintained until it enters the extruder, optionally with separate suction lines to the reservoir and the metering conveyor, but also the possibility of removing the gases from the Feed conveyor during the supply from the reservoir via its then open outlet via the vacuum line to suck this reservoir alone. For the structural design of the feeder conveyor there are again different possibilities. One of them is that the feeder conveyor is designed as a screw conveyor and its delivery rate is adjustable via the control device. Both in the feeder conveyor and in the extruder itself, the flow rate is then advantageously set so that the screw or screws are not completely filled, which favors the gas discharge.
    According to another variant of the feeder conveyor is designed as a conveyor belt, provided with a weighing device for detecting the currently placed good and adjustable via the connected to the weighing device and the conveyor speed detecting control device, so that also achieves an accurate control of the supply quantity and the desired Füllgutstandes the extruder becomes.
    Procedurally, the device according to the invention is preferably operated in such a way that the plastic material before delivery to the feeder conveyor a preselected period of time, eg. B. 30 minutes, left under heating and gas extraction in the reservoir and the subsequent supply of plastic material to the screw extruder by appropriate control of the feeder conveyor to a partial, z. B. 80% charge of the screw extruder is set.
    If a continuous operation is to be maintained in the described method, it is also possible to provide two reservoirs and to connect them alternately with the feeder conveyor.
    In the single figure of the drawing an embodiment of the subject invention is illustrated in a schematic representation.
    In the embodiment, a twin-screw extruder is provided, the screws 1 and 2 are drivable via a controllable drive means 3 in the same direction of rotation. The extruder housing 4 has in a known manner an outlet 5 and an inlet 6 which, in contrast to the known embodiments, is tightly connected to the housing 7 of a screw conveyor 8 with screw conveyor 8 and controllable drive means 9. Also tightly equipped with a rotary valve 10 outlet of a reservoir 11 is connected to the inlet 12 of the housing 7. The reservoir 11 is provided with a heating device, not shown, for its contents. • Φ * * * * -4-
    The storage container 11 is preceded by an intermediate container 13, which in turn can be charged via an inlet 14. The containers 11, 13 and 14 are connected to each other by connections provided with shut-off valves, which were drawn as rotary valves 15, 16, but may also be other valves. A vacuum pump 17 is connected via connecting lines 18, 19, 20 with the conveyor housing 7, the reservoir 11 and the intermediate container 13.
    The feed takes place in such a way that initially with open rotary valve 16 and closed rotary valves 10, 15 of the intermediate container 13 is filled. Then the rotary valve 16 is closed and the rotary valve 15 is opened so that, if necessary in several successive stages of the reservoir 11 can be filled. The vacuum remains upright because of the connections via the lines 19, 20. After filling of the reservoir 11, the material is heated in a predetermined residence time in the reservoir 11, wherein thereby expelled gases and vapors are sucked through the line 19. After the mentioned residence time, the lock 10 is opened and the obturator 15 is closed. Now, the contents of the reservoir 11 is fed to the extruder 1 to 6 by means of the feeder conveyor 7 to 9 and processed regulated.
    权利要求:
    Claims (5)
    [1]
    Patent Attorneys Dipl.-Ing. Helmut Hübscher Dipl.-Ing. Karl Winfried Hellmich Spittelwiese 7, A 4020 Linz {37 539) The invention relates to a device for extruding thermoplastic material, having a screw extruder (1 to 5), which is guided by an inlet (6) of its housing from a feeder conveyor (7 to 9) with plastic material from a storage container (1t) is chargeable, wherein a suction device (17 to 20) are provided for excreted gases and a control device, characterized in that formed as a controllable metering feeder conveyor (7 to 9) in a close to The conveyor housing (7) adjoining the inlet (12) is arranged and connected to the suction device (18).
    [2]
    2. Apparatus according to claim 1, characterized in that the feeder conveyor (7 to 9) is also tightly connected to the reservoir (11), which latter can be closed tightly, formed to a pretreatment of the plastic material heated and with the or a suction device (19 ) connected is.
    [3]
    3. Apparatus according to claim 1 or 2, characterized in that the feeder conveyor designed as a screw conveyor (7 to 9) and its delivery rate is adjustable via the control device.
    [4]
    4. Apparatus according to claim 1 or 2, characterized in that the feeder conveyor designed as a conveyor belt, provided with a weighing device for detecting the currently launched good and is controllable via the connected to the weighing device and the conveying speed detecting control device. Ml * 2
    [5]
    5. A method of operating the device according to claims 1 to 4, characterized in that the plastic material before delivery to the feeder conveyor (7 to 9) a preselectable period of time, for. B. 30 minutes, left under heating and gas extraction in the reservoir (11) and the subsequent supply of plastic material to the screw extruder (1 to 6) by appropriate control of the feeder conveyor to a partial, z. B. 80% charge of the screw extruder is set. Linz, on October 14, 2010 Ing. Helmuth Schulz

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    同族专利:
    公开号 | 公开日
    AT510263B1|2012-03-15|
    WO2012051639A1|2012-04-26|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    EP0134977A2|1983-07-22|1985-03-27|Mapro Inc.|Method and apparatus for removing moisture and volatiles from molding particulate plastic material feed|
    DD280500A5|1988-04-08|1990-07-11|Stamicarbon B. V.,Nl|PROCESS FOR PROCESSING A THERMOPLASTIC POLYCONDENSATION POLYMER|EP3564005A1|2018-05-02|2019-11-06|Buss AG|Mixing and kneading device|CH434719A|1963-07-17|1967-04-30|Leybolds Nachfolger E|Device for plastic injection molding|
    DE2520244C3|1975-05-07|1978-03-16|Werner & Pfleiderer, 7000 Stuttgart|Loading device for a screw extruder|
    JPH074019U|1993-06-23|1995-01-20|信越ポリマー株式会社|Extrusion amount control device such as plastic molding machine|
    DE19722278A1|1997-05-28|1998-12-03|Zimmer Ag|Degassing of hydrolysis sensitive polymers|
    ES2272880T3|2003-02-09|2007-05-01|ENTEX RUST & MITSCHKE GMBH|PROCEDURE FOR PET TREATMENT.|
    AT413965B|2004-03-26|2006-07-15|Erema|DEVICE FOR PREPARING THERMOPLASTIC PLASTIC MATERIAL|
    AT504723B1|2006-10-05|2008-09-15|Schulz Helmuth Ing|DEVICE FOR EXTRUDING THERMOPLASTIC PLASTIC GOODS|CN107310121B|2017-06-22|2019-11-01|冠纳电缆有限公司|A kind of extruding machine convenient for the uniform extrusion molding of cable|
    EP3479992A1|2017-11-01|2019-05-08|Haute Ecole d'Ingénierie et de Gestion du Canton de Vaud |Device and method for recycling plastic materials|
    法律状态:
    2018-10-15| PC| Change of the owner|Owner name: KATHARINA SCHULZ, AT Effective date: 20180913 |
    优先权:
    申请号 | 申请日 | 专利标题
    AT0172610A|AT510263B1|2010-10-18|2010-10-18|DEVICE FOR EXTRUDING THERMOPLASTIC PLASTIC MATERIAL|AT0172610A| AT510263B1|2010-10-18|2010-10-18|DEVICE FOR EXTRUDING THERMOPLASTIC PLASTIC MATERIAL|
    PCT/AT2011/050018| WO2012051639A1|2010-10-18|2011-10-07|Device and method for extruding thermoplastic plastic material|
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