The utility model provides a heat shield lifting device, which comprises a lifting rod, the lifting rod passes through the through hole of the furnace cover, the bottom end of which is located in the inner side of the furnace cover, and is fixedly connected with the heat shield through the heat shield flange, the top of which is located outside the furnace cover and connected with the traction rope, and the lifting rod is pulled by the traction rope to rise or fall with the heat shield. The traction rope is wound around the pulley, its head end is fixed with the lifting rod, its tail end is connected with the winding wheel, and the winding wheel is used to roll and release the traction rope. The pulley is located on the bracket. The bracket and the lifting rod are parallel to each other. The bottom end of the pulley is fixed on the furnace cover. The pulley is installed on the top of the bracket through a rotating shaft. The winding wheel is located under the pulley and is installed on the furnace cover through the support. The outer side of the lifting rod is provided with a sealed bellows. The top of the lifting rod is fixed with an end plate, and the top of the sealed bellows is connected with the end plate. The bottom end of the sealed bellows is connected with the through hole of the furnace cover. The sealed bellows can contract with the lifting rod, and the end of the traction rope is fixed on the end plate.
【技术实现步骤摘要】
热屏升降装置
本技术涉及单晶硅生产设备,尤其涉及一种热屏升降装置。
技术介绍
单晶硅的拉制,需要尽可能的多装料,使坩埚装料最大化,当堆高的硅料接触到上方的热屏,会造成材料的污染,当坩埚旋转时还会使硅料滑落,造成事故,因此,需要把热屏提升到最高处,当硅料熔化后,再把热屏下降至保温法兰上。现有的热屏升降装置采用硬轴升降热屏,热屏下降时可能存在水平面有高低偏差,硬轴升降很容易压坏保温法兰,保温材料碎裂掉入硅溶液里面,会造成材料污染和碳含量超标。因此,有必要对这种热屏升降装置进行结构优化,以克服上述缺陷。
技术实现思路
本技术的目的是提供一种热屏升降装置,避免热屏下降时对保温法兰造成损伤。本技术为解决其技术问题所采用的技术方案是,热屏升降装置,包括升降杆,具体地:升降杆从炉盖上的通孔中穿过,其底端位于炉盖内侧,并通过热屏法兰与热屏固定连接,其顶端位于炉盖外侧,并与牵引绳索相连,由牵引绳索拉动升降杆与热屏上升或下降。牵引绳索绕于滑轮上,其头端与升降杆固定连接,其尾端与卷绕轮相接,由卷绕轮对牵引绳索进行卷放操作。滑轮位于支架上,支架与升降杆相互平行,其底端固定于炉盖上,滑轮通过转轴安装于支架顶端,卷绕轮位于滑轮下方,通过支座安装于炉盖上。升降杆外侧设有密封波纹管,升降杆顶端固定有端板,密封波纹管顶端与端板相接,其底端连接于炉盖的通孔处,密封波纹管可随升降杆的升降而伸缩,牵引绳索头端固定于端板上。本技术的优点在于,该热屏升降装置采用牵引绳索带动热屏升降,当热屏下降到保温法兰着力后,停止下降,对保温材料不会形成挤压,卷绕轮拉动牵引绳索,控制热屏上下移动,可非常直观的看到牵引绳索负 ...
【技术保护点】
1.热屏升降装置,包括升降杆,其特征在于:升降杆从炉盖上的通孔中穿过,其底端位于炉盖内侧,并通过热屏法兰与热屏固定连接,其顶端位于炉盖外侧,并与牵引绳索相连,由牵引绳索拉动升降杆与热屏上升或下降;牵引绳索绕于滑轮上,其头端与升降杆固定连接,其尾端与卷绕轮相接,由卷绕轮对牵引绳索进行卷放操作;滑轮位于支架上,支架与升降杆相互平行,其底端固定于炉盖上,滑轮通过转轴安装于支架顶端,卷绕轮位于滑轮下方,通过支座安装于炉盖上。
【技术特征摘要】
1.热屏升降装置,包括升降杆,其特征在于:升降杆从炉盖上的通孔中穿过,其底端位于炉盖内侧,并通过热屏法兰与热屏固定连接,其顶端位于炉盖外侧,并与牵引绳索相连,由牵引绳索拉动升降杆与热屏上升或下降;牵引绳索绕于滑轮上,其头端与升降杆固定连接,其尾端与卷绕轮相接,由卷绕轮对牵引绳索进行卷放操作;滑轮位于支架上,支架与升...
【专利技术属性】
技术研发人员:曾国伟,乔晓东,
申请(专利权)人:嘉兴耐进新材料有限公司,
类型:新型
国别省市:浙江,33
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