Safety chemical experiment demonstration device

Abstract

The invention relates to a safety chemical experiment demonstration device and belongs to the technical field of chemical appliances.The safety chemical experiment demonstration device comprises a demonstration device body, a power supply switch is arranged on the upper side of the demonstration device body, a background screen switch is arranged in front of the power supply switch, an operation port is arranged in front of the background screen switch, an observation window frame is arranged in the front of the demonstration device body, hinge connection pieces are arranged on the observation window frame and are connected with hinges, the hinges are connected with a glass observation window, a fixing plate is arranged on the lower side of the glass observation window and is connected with a magnetic attraction lock, a first handle connection piece is arranged on the fixing plate and is connected with a handle, rotary knob openings are formed in the lower side of the fixing plate, and height-adjusting rotary knobs are arranged in the rotary knob openings.The safety chemical experiment demonstration device has complete functions and is convenient to use, time saving and labor saving during chemical experiment demonstration, scientific, safe, efficient and capable of lowering teaching difficulty of chemistry teachers.

Description

technical field [0001] The invention belongs to the technical field of chemical appliances, and in particular relates to a safety demonstration device for chemical experiments. Background technique [0002] When students learn chemistry, they often need to do experiments by themselves or teachers to do experimental demonstrations to increase students' understanding and memory of chemical principles, which is convenient for students to learn. Generally, small or micro experiments are not dangerous. It is carried out without safety protection measures, but it involves some experiments that are prone to explosion and toxic gas. If the students operate by themselves, the risk is high, and accidents are likely to pose a threat to the students' body. The teacher's demonstration is also dangerous to a certain extent, and in the demonstration In the process, if the experiment is accompanied by color changes, the background is not handled well, the color changes are not obvious, and ...

AI Technical Summary

Problems solved by technology

[0002] When students learn chemistry, they often need to do experiments by themselves or teachers to do experimental demonstrations to increase students' understanding and memory of chemical principles, which is convenient for students to learn. Generally, small or miniature experiments are not dangerous and can be used by students at will. It is carried out without safety protection measures, but it involves some experiments that are prone to explosion and toxic gas. If the students operate by themselves, the risk is high, and accidents are likely to pose a threat to the students' bodies. The teacher's demonstration is also dangerous to a certain extent, and in the demonstration In the process, if there is an experiment with color changes, the background is not handled well, the color changes are not obvious, and students' observation is not clear, it will reduce students' understanding and learning interest, and greatly increase the difficulty of teaching for chemistry teachers

Images