CN201471702U - 可强制排气的双螺杆挤出机 - Google Patents

可强制排气的双螺杆挤出机 Download PDF

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Publication number
CN201471702U
CN201471702U CN2009202316840U CN200920231684U CN201471702U CN 201471702 U CN201471702 U CN 201471702U CN 2009202316840 U CN2009202316840 U CN 2009202316840U CN 200920231684 U CN200920231684 U CN 200920231684U CN 201471702 U CN201471702 U CN 201471702U
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China
Prior art keywords
exhaust
screw
port
screw extruder
screw rod
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Expired - Fee Related
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CN2009202316840U
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English (en)
Inventor
李志远
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Changzhou Haihong Sharing Plastics Material Co Ltd
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Changzhou Haihong Sharing Plastics Material Co Ltd
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Priority to CN2009202316840U priority Critical patent/CN201471702U/zh
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25Component parts, details or accessories; Auxiliary operations
    • B29C48/36Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
    • B29C48/50Details of extruders
    • B29C48/505Screws
    • B29C48/55Screws having reverse-feeding elements
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25Component parts, details or accessories; Auxiliary operations
    • B29C48/36Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
    • B29C48/395Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die using screws surrounded by a cooperating barrel, e.g. single screw extruders
    • B29C48/40Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die using screws surrounded by a cooperating barrel, e.g. single screw extruders using two or more parallel screws or at least two parallel non-intermeshing screws, e.g. twin screw extruders

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Extrusion Moulding Of Plastics Or The Like (AREA)

Abstract

本实用新型涉及机械设备制造技术领域,尤其是一种可强制排气的双螺杆挤出机。其包括螺杆、喂料口和出料口,在螺杆的两端分别设有前排气口和后排气口,在前排气口和后排气口处均设有抽真空设备。由于在两个排气口上均加装抽真空设备,强制排气。同时对现有螺阶进行了改善,加装反向螺阶,避免了物料在排气口被抽出,同时还增强了物料的分散。并且有效降低了熔体因小分子和水分的存在,以及在后段强捏合剪切过程中的分解。同时,反向螺阶延长了物料在螺杆中的停留时间,加强了分散效果,降低了生产成本。

Description

可强制排气的双螺杆挤出机
技术领域
本实用新型涉及机械设备制造技术领域,尤其是一种可强制排气的双螺杆挤出机。
背景技术
在目前常规的母粒生产中,使用双螺杆挤出机,通常不用强制排气或使用前自然排气加使用后强制排气的方法。这两种方法在常规母粒生产中,尤其是普通的PP、PE等母粒生产无太大影响。而在热敏水解性的PET母粒生产过程中,会造成母粒生产的不正常性,粘度的降低,物料的分解等等。通常在生产前需对物料进行干燥或长时间高速混合,以摩擦生热的方式来排除水分,既增加了生产成本,效果又不明显。
实用新型内容
为了克服现有的热敏水解性的PET母粒生产成本高、效果不明显的不足,本实用新型提供了一种可强制排气的双螺杆挤出机。
本实用新型解决其技术问题所采用的技术方案是:一种可强制排气的双螺杆挤出机,包括螺杆、喂料口和出料口,在螺杆的两端分别设有前排气口和后排气口,在前排气口和后排气口处均设有抽真空设备。
根据本实用新型的另一个实施例,进一步包括位于前排气口和后排气口处的螺杆均设有反向螺阶。
本实用新型的有益效果是,由于在两个排气口上均加装抽真空设备,强制排气。同时对现有螺阶进行了改善,加装反向螺阶,避免了物料在排气口被抽出,同时还增强了物料的分散;并且有效降低了熔体因小分子和水分的存在,以及在后段强捏合剪切过程中的分解。同时,反向螺阶延长了物料在螺杆中的停留时间,加强了分散效果,降低了生产成本。
附图说明
下面结合附图和实施例对本实用新型进一步说明。
图1是本实用新型的结构示意图;
图中1.喂料口,2.螺杆,3.出料口,4.前排气口,5.后排气口,6.反向螺阶。
具体实施方式
现在结合附图和优选实施例对本实用新型作进一步详细的说明。这些附图均为简化的示意图,仅以示意方式说明本实用新型的基本结构,因此其仅显示与本实用新型有关的构成。
如图1是本实用新型的结构示意图,一种可强制排气的双螺杆挤出机,包括螺杆2、喂料口1和出料口3,在螺杆2的两端分别设有前排气口4和后排气口5,在前排气口4和后排气口5处均设有抽真空设备。位于前排气口4和后排气口5处的螺杆2均设有反向螺阶6。
工作时,物料从喂料口1进入,进入双螺杆挤出机,在螺杆2的两端分别设有前排气口4和后排气口5,在前排气口4和后排气口5处均设有抽真空设备,通过加装的2个抽真空设备,可以对物料进行强制排气,同时,位于前排气口4和后排气口5处的螺杆2均设有反向螺阶6,避免了物料在排气口被抽出,且增强了物料的分散,并且有效降低了熔体因小分子和水分的存在,以及在后段强捏合剪切过程中的分解。由于反向螺阶6的加装,延长了物料在螺杆2中的停留时间,加强了分散效果。除了位于前排气口4和后排气口5处的螺杆2设有反向螺阶6外,其余螺杆2和现有螺杆的螺阶仍然相同,生产制造简单方便,降低了成本。
以上述依据本实用新型的理想实施例为启示,通过上述的说明内容,相关工作人员完全可以在不偏离本项实用新型技术思想的范围内,进行多样的变更以及修改。本项实用新型的技术性范围并不局限于说明书上的内容,必须要根据权利要求范围来确定其技术性范围。

Claims (2)

1.一种可强制排气的双螺杆挤出机,包括螺杆(2)、喂料口(1)和出料口(2),在螺杆(2)的两端分别设有前排气口(4)和后排气口(5),其特征是,在前排气口(4)和后排气口(5)处均设有抽真空设备。
2.根据权利要求1所述的可强制排气的双螺杆挤出机,其特征是,位于前排气口(4)和后排气口(5)处的螺杆(2)均设有反向螺阶(6)。
CN2009202316840U 2009-09-11 2009-09-11 可强制排气的双螺杆挤出机 Expired - Fee Related CN201471702U (zh)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101913238A (zh) * 2010-08-19 2010-12-15 芜湖纽麦特新材料有限公司 一种挤出设备
CN102310544A (zh) * 2011-06-29 2012-01-11 蚌埠市振中橡塑制品有限公司 橡胶模型预成型机中抽真空系统

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101913238A (zh) * 2010-08-19 2010-12-15 芜湖纽麦特新材料有限公司 一种挤出设备
CN101913238B (zh) * 2010-08-19 2013-04-17 芜湖纽麦特新材料有限公司 一种挤出设备
CN102310544A (zh) * 2011-06-29 2012-01-11 蚌埠市振中橡塑制品有限公司 橡胶模型预成型机中抽真空系统

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Granted publication date: 20100519

Termination date: 20110911