CN202528439U - 利用废pvc生产pvc片材的螺杆挤压机结构 - Google Patents

利用废pvc生产pvc片材的螺杆挤压机结构 Download PDF

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Publication number
CN202528439U
CN202528439U CN2012201044130U CN201220104413U CN202528439U CN 202528439 U CN202528439 U CN 202528439U CN 2012201044130 U CN2012201044130 U CN 2012201044130U CN 201220104413 U CN201220104413 U CN 201220104413U CN 202528439 U CN202528439 U CN 202528439U
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CN
China
Prior art keywords
pvc
screw extruder
screw rod
sheets
screw
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Expired - Fee Related
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CN2012201044130U
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English (en)
Inventor
潘建新
张陆贤
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Guangde Tianyun Nonwoven Co Ltd
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Guangde Tianyun Nonwoven Co Ltd
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Priority to CN2012201044130U priority Critical patent/CN202528439U/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
    • B29C48/53Screws having a varying channel depth, e.g. varying the diameter of the longitudinal screw trunk
    • 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
    • B29C48/52Screws with an outer diameter varying along the longitudinal axis, e.g. for obtaining different thread clearance
    • B29C48/525Conical screws

Landscapes

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

Abstract

本实用新型提供了一种利用废PVC生产PVC片材的螺杆挤压机结构,包括螺杆、螺套,螺杆的长径比为18~25∶1。对于螺杆挤压机而言,设置合理的螺杆长径比利于提高材料的挤压质量,提高最终成品的性能指标。对于采用废PVC生产PVC片材的特殊原材料而言,选择18~25∶1的长径比,能使密炼之后的原料得到更加更充分的糅合、挤压,利于提升产品质量。

Description

利用废PVC生产PVC片材的螺杆挤压机结构
技术领域
本实用新型涉及PVC生产领域,具体涉及一种利用废PVC生产PVC片材的螺杆挤压机结构。
背景技术
在传统的PVC生产工艺流程中,经过密炼机对原材料进行混炼之后,从密炼机的出料口排出,转运至下一道工序,进入开炼机制备塑炼胶、混炼胶或进行热炼、出型。经过长期的生产发现,通过开炼机进行PVC片材的热炼,其拉力系数和材料密度往往都达不到理想的指标,究其原因是因为开炼机的机械结构特征,使密炼之后的原料无法得到更充分的糅合、挤压,最终影响成品的产品性能指标。针对这一情况,申请人考虑采用螺杆挤压机替代开炼机,挤压机的长径比对于挤压糅合的效果和质量有极大的影响。
实用新型内容
针对以上现有技术中存在的问题,本实用新型提供了一种挤压充分、产品性能好的利用废PVC生产PVC片材的螺杆挤压机结构。
本实用新型是通过以下技术方案实现的:
利用废PVC生产PVC片材的螺杆挤压机结构,包括螺杆、螺套,所述螺杆的长径比为18~25∶1。
所述螺杆的长径比为20~23∶1。
本实用新型的有益效果为:对于螺杆挤压机而言,设置合理的螺杆长径比利于提高材料的挤压质量,提高最终成品的性能指标。对于采用废PVC生产PVC片材的特殊原材料而言,选择18~25∶1的长径比,能使密炼之后的原料得到更加更充分的糅合、挤压,利于提升产品质量。
附图说明
图1为本实用新型的结构示意图。
图中:1为螺杆;2为螺套。
具体实施方式
以下结合附图和具体实施方式对本实用新型做进一步详细说明。
本实用新型提供了一种利用废PVC生产PVC片材的螺杆挤压机结构,包括螺杆1及螺套2,其中螺杆1是挤压机最重要的部件,由于本实用新型是应用废PVC生产PVC片材,故本实用新型所选取的螺杆1的长径比为18~25∶1,较优的尺寸是20~23∶1。
如果长径比过小,则密炼之后的原料无法得到更充分的糅合、挤压,最终影响成品的产品性能指标;而如果长径比过大,对于挤压机来说增加了加工难度,也提高了设备成本,而对于普通的PVC片材而言,拉力系数和材料密度也是适中即可。
本实用新型对于螺杆挤压机而言,设置合理的螺杆1的长径比利于提高材料的挤压质量,提高最终成品的性能指标。对于采用废PVC生产PVC片材的特殊原材料而言,选择18~25∶1的长径比,能使密炼之后的原料得到更加更充分的糅合、挤压,利于提升产品质量。

Claims (2)

1.利用废PVC生产PVC片材的螺杆挤压机结构,包括螺杆、螺套,其特征在于所述螺杆的长径比为18~25∶1。
2.根据权利要求1所述的利用废PVC生产PVC片材的螺杆挤压机结构,其特征在于所述螺杆的长径比为20~23∶1。
CN2012201044130U 2012-03-12 2012-03-12 利用废pvc生产pvc片材的螺杆挤压机结构 Expired - Fee Related CN202528439U (zh)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2012201044130U CN202528439U (zh) 2012-03-12 2012-03-12 利用废pvc生产pvc片材的螺杆挤压机结构

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2012201044130U CN202528439U (zh) 2012-03-12 2012-03-12 利用废pvc生产pvc片材的螺杆挤压机结构

Publications (1)

Publication Number Publication Date
CN202528439U true CN202528439U (zh) 2012-11-14

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Country Status (1)

Country Link
CN (1) CN202528439U (zh)

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CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20121114

Termination date: 20150312

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