[Chinese instrument network instrument research and development] In the explanation process of the chemistry class experiment, the glass instrument is fragile, the connection is inconvenient, and the paper instrument model paste is fixed and troublesome. These problems inevitably confuse many teachers. How to overcome the limitations of glass instruments and paper instruments, so that the experimental explanation becomes convenient, efficient and safe?
Recently, the “Magnetic Chemistry Experiment Instrument Components†developed jointly by the teachers of Chongqing Yizhong Chen Guojun and Zhang Guohui solved this problem. This innovation has won a utility model patent certificate issued by the State Intellectual Property Office of the People's Republic of China.
Two teachers, Chen Guojun and Zhang Guohui, found that due to the limitations of the instrument, the experimental demonstration session in the chemistry class was inefficient. To overcome this problem, they overcome the safety problems of glass instruments by making models and overcome the splicing problems of paper instruments through magnetic patches. After repeated modifications and adjustments, we finally developed a convenient, efficient, and safe magnetic chemistry experimental instrument assembly.
According to reports, the component contains a magnetic patch made from an experimental instrument model. When the experimental instrument model is used on a blackboard or a whiteboard, various experimental devices can be spliced ​​to facilitate the correction and analysis of the teacher at any time during the explanation. Both sides of the display whiteboard are magnetic. One side can be used by students to design the experimental device with a magnetic instrument model. The other side is also magnetic. It is convenient for the students to explore the activity, and then the group work is presented on the blackboard as a whole and displayed.
The acquisition of this patent certificate is a great affirmation of the two teachers’ awareness of scientific and technological innovation. They actively think in their work, give play to the spirit of scientific research, and solve problems according to the actual situation. At the same time, they also allow students to see the teaching wisdom of teachers.
(Original Title: Mighty Middle School Teachers! Development of New Experimental Instrument Components Received National Patent Certificate)
Anti-wear Ring
Installation and precautions of track connecting rod oil seal
The installation steps for the track link oil seal are as follows:
1. Cleaning: Clean the connecting parts to ensure that the surface is flat, clean, and free of grease and dirt.
2. Oil application: Apply a layer of lubricating oil to the connecting parts for better installation.
3. Installation: Gently push the oil seal into the connection area to ensure that the lip of the oil seal is not damaged.
4. Positioning: After positioning the oil seal, press it with your fingers to ensure it is in the correct position.
5. Inspection: Check if the oil seal is installed correctly and ensure that the lip is not damaged.
The precautions are as follows:
Before installation, check if the oil seal is damaged. If the oil seal is damaged, replace it with a new one.
Before installation, ensure that the surface of the connecting parts is flat, clean, and free of grease and dirt.
3. When installing the oil seal, gently push in to avoid damaging the lip of the oil seal.
4. After installation, check whether the oil seal is installed correctly to ensure that the lip is not damaged.
5. During use, the condition of the oil seal should be regularly checked. If any damage or wear is found, the oil seal should be replaced in a timely manner.
Wear ring for excavator,For excavator track,For excavator accessories
Safe Seal Technology Co., Ltd. , https://www.jolseals.com