CN103252887A - 一种螺杆挤出机上用的电磁加热装置 - Google Patents

一种螺杆挤出机上用的电磁加热装置 Download PDF

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CN103252887A
CN103252887A CN2012100347484A CN201210034748A CN103252887A CN 103252887 A CN103252887 A CN 103252887A CN 2012100347484 A CN2012100347484 A CN 2012100347484A CN 201210034748 A CN201210034748 A CN 201210034748A CN 103252887 A CN103252887 A CN 103252887A
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electromagnetic induction
heater
induction coil
electromagnetic
heating device
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刘小伟
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JIANGXI HONGSHENG PLASTIC INDUSTRY Co Ltd
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JIANGXI HONGSHENG PLASTIC INDUSTRY Co Ltd
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
    • B29C48/78—Thermal treatment of the extrusion moulding material or of preformed parts or layers, e.g. by heating or cooling
    • B29C48/80—Thermal treatment of the extrusion moulding material or of preformed parts or layers, e.g. by heating or cooling at the plasticising zone, e.g. by heating cylinders
    • B29C48/83—Heating or cooling the cylinders
    • B29C48/832—Heating
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
    • B29C48/36—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
    • B29C48/395—Means 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
    • B29C48/40—Means 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
    • B29C48/92—Measuring, controlling or regulating
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C2948/00—Indexing scheme relating to extrusion moulding
    • B29C2948/92—Measuring, controlling or regulating
    • B29C2948/92009—Measured parameter
    • B29C2948/92209—Temperature
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C2948/00—Indexing scheme relating to extrusion moulding
    • B29C2948/92—Measuring, controlling or regulating
    • B29C2948/92323—Location or phase of measurement
    • B29C2948/92361—Extrusion unit
    • B29C2948/9238—Feeding, melting, plasticising or pumping zones, e.g. the melt itself
    • B29C2948/924—Barrel or housing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C2948/00—Indexing scheme relating to extrusion moulding
    • B29C2948/92—Measuring, controlling or regulating
    • B29C2948/92504—Controlled parameter
    • B29C2948/92704—Temperature
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C2948/00—Indexing scheme relating to extrusion moulding
    • B29C2948/92—Measuring, controlling or regulating
    • B29C2948/92819—Location or phase of control
    • B29C2948/92857—Extrusion unit
    • B29C2948/92876—Feeding, melting, plasticising or pumping zones, e.g. the melt itself
    • B29C2948/92895—Barrel or housing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
    • B29C48/256—Exchangeable extruder parts
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
    • B29C48/36—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
    • B29C48/50—Details of extruders
    • B29C48/68—Barrels or cylinders
    • B29C48/6801—Barrels or cylinders characterised by the material or their manufacturing process
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
    • B29C48/36—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
    • B29C48/50—Details of extruders
    • B29C48/68—Barrels or cylinders
    • B29C48/682—Barrels or cylinders for twin screws

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • General Induction Heating (AREA)

Abstract

本发明提供一种螺杆挤出机上用的电磁加热装置，它包括电源、温控装置和套装在挤出机金属料筒外层的加热器，所述电源与温控装置、加热器依次连接构成串联电路，其特征是：所述加热器包括电磁感应线圈和电磁感应控制器，所述电磁感应线圈绕制在金属料筒的外围，并在两者之间设有一层保温层。电磁感应线圈与料筒之间必须有11-16mm的间隙，所述保温层为硅酸铝保温棉层，该层的设置既能保证磁场能有效的穿过此保温层，又能有效的阻隔热量的散发。本发明具有结构简单，有利于环境保护等特点，其节电可达50%以上。

Description

一种螺杆挤出机上用的电磁加热装置
技术领域
本发明涉及一种电磁加热装置，具体讲是一种适用于单、双螺杆挤出机用电磁加热装置。
背景技术
目前，现有的双螺杆挤出机的料筒加热是通过电阻丝发热，并对铸铝（铜）加热，热量传递给料筒，达到加热筒的目的，这种加热方式，一是由于发热件的外侧面裸露在空气中，周围的空气被迅速加热，造成能量损失、环境温度升高，能量有效利用率只有50%，造成环境热污染，工人的工作环境比较恶劣，另外，铸铜加热板的功率密度一般为5-6w/c m2，铸铝加热板的功率密度只有3w/c m2，如果超过额定功率密度，铸铝（铜）会在高温下熔化、变形，不能与料筒紧贴，造成加热器烧坏或热量传统不到料筒。发明内容
本发明的目的就是针对现有挤出机加热部件存在的不足，提供一种单、双螺杆挤出机用的电磁加热装置，该加热装置节能、环保，同时提高了设备的产能，对环境温度影响不大。
本发明的目的可通过以下方案来实现：一种挤出机上用的电磁加热装置，它包括电源、温控装置和套装在挤出机金属料筒外层的加热器，所述电源与温控装置、加热器依次连接构成串联电路，其特征是：所述加热器包括电磁感应线圈和电磁感应控制器，所述电磁感应线圈绕制在金属料筒的外围，并在两者之间设有一层保温层。电磁感应线圈与料筒之间必须有11-16mm的间隙，没有间隙线圈不能正常工作，在这个间隙里填保温层起到阻止热量散发的作用。
所述保温层为硅酸铝保温棉层，该层的设置既能保证磁场能有效的穿过此保温层，又能有效的阻隔热量的散发。
本发明具有结构简单，有利于环境保护等特点，其节电可达50%以上。
附图说明
图1，采用电磁加热器的料筒部分截面图。
图2，电磁加热控制器电原理图。
具体实施方式
对照图1、图2可知，本发明的电磁加热装置包括电磁感应线圈3和电磁感应控制器。电磁感应线圈3绕制在料筒1的外层，电磁感应线圈3与料筒1之间设有一层保温层2，其材料为高性能硅酸铝保温棉，线圈与料筒之间设有11-16mm的间隙，以保证电磁感应线圈正常工作。
本发明的电磁感应控制器工作原理如下：
输入220VAC经桥式整流电路整流成脉冲直流电，再经过由滤波电感L1、滤波电容C1组成的LC滤波电路，使脉冲直流电变得更加平滑，接近理想直流电，电磁感应线圈L2是电磁感兴控制器输出加热功率的唯一元件，实际上电磁感应线圈L2就是一个特殊形状的电感器，它与谐振电容C2并联组成LC并联谐振电路，在功率开关管Q高速且规律的导通与截止状态下，LC并联谐振电路不断从电源得到因电磁感应线圈L2损耗而消耗的能量，形成LC高频振荡，直流电逆变为高频交流电，整个电路完成整流、逆变过程，此时经过电磁感应线圈L2的是一频率为18-28KHz的高频交流电。
高频电输出给电磁感应线圈L2，电磁感应线圈L2安装在经保温处理的料筒上，当线圈通入高频电时，线圈周围产生高速交变磁场，料筒表面的金属分子在磁场的作用下产生涡流效应，金属分子相互撞击，使料筒本身自行快速发热，达到加热料筒的目的。同时在电磁感应线圈L2与料筒之间有一层保温层，既能保证磁场能有效的穿过此保温层，又能有效的阻隔热量的散发，能量有效利用率超过90%。

Claims (2)

1.一种螺杆挤出机上用的电磁加热装置，它包括电源、温控装置和套装在挤出机金属料筒外层的加热器，所述电源与温控装置、加热器依次连接构成串联电路，其特征是：所述加热器包括电磁感应线圈（3）和电磁感应控制器，所述电磁感应线圈（3）绕制在金属料筒（1）的外围，并在两者之间设有一层保温层（2），电磁感应线圈（3）与料筒（1）之间必须有11-16mm的间隙。
2.根据权利要求1所述的加热装置，其特征是所述保温层为硅酸铝保温棉层。
CN2012100347484A 2012-02-16 2012-02-16 一种螺杆挤出机上用的电磁加热装置 Pending CN103252887A (zh)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105150495A (zh) * 2015-06-16 2015-12-16 北京三联虹普新合纤技术服务股份有限公司 一种锦纶螺杆挤出机的电磁感应加热系统
CN109093977A (zh) * 2018-09-12 2018-12-28 江苏兴联电子科技有限公司 一种挤塑机电磁加热装置

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CN202428647U (zh) * 2012-02-16 2012-09-12 江西鸿盛塑业有限公司 一种螺杆挤出机上用的电磁加热装置

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JP2001250666A (ja) * 2000-03-03 2001-09-14 Tokyo Electron Ltd 加熱装置および温調装置
JP2007066849A (ja) * 2005-09-02 2007-03-15 Omron Corp 電磁誘導流体加熱装置及び同電磁誘導流体加熱装置の制御方法
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CN202428647U (zh) * 2012-02-16 2012-09-12 江西鸿盛塑业有限公司 一种螺杆挤出机上用的电磁加热装置

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105150495A (zh) * 2015-06-16 2015-12-16 北京三联虹普新合纤技术服务股份有限公司 一种锦纶螺杆挤出机的电磁感应加热系统
CN109093977A (zh) * 2018-09-12 2018-12-28 江苏兴联电子科技有限公司 一种挤塑机电磁加热装置

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Application publication date: 20130821