论文部分内容阅读
在化学实验中,用酒精灯给反应体系加热是中学化学的基本操作之一。但由于加热装置离铁架台远近、高低各有不同,而酒精灯不能随意调节距离,常用垫示块等方法去调节酒精灯的位置,操作起来极不方便。因此我设计了可调加热装置。装置说明:①为旋纽,可用于调节铁圈,使之上下可自由移动。②为旋纽,位于离铁管口4 mm 处的侧面,可左右随意调节铁圈的位置。③为长55mm,壁厚为1.5mm 的铁管。且与①铸为一体。④是带有铁棍的铁圈,铁棍长45 mm,直径为10mm,在铁棍的一侧有深1 mm 的槽,它与旋纽②接触,可防止铁圈左右摇摆。另外,
In chemical experiments, heating the reaction system with an alcohol lamp is one of the basic operations of middle school chemistry. However, since the heating device is far away from the iron frame and the height is different, the alcohol lamp can not adjust the distance freely, and commonly used pads and other methods to adjust the position of the alcohol lamp are very inconvenient to operate. So I designed an adjustable heating device. Device Description: 1 is a knob, can be used to adjust the iron ring, so that can move freely. 2 is a knob, located 4mm away from the side of the iron pipe, you can adjust the position of the iron ring left and right. 3 is a 55mm long, 1.5mm thick iron pipe. And cast into one. 4 is an iron ring with an iron bar. The iron bar is 45 mm long and 10 mm in diameter. There is a 1 mm deep groove on one side of the iron bar. It is in contact with the knob 2 to prevent the iron ring from swaying. In addition,