Chemical experiment teaching safety demonstration device

Abstract

The invention discloses a chemical experiment teaching safety demonstration device. The device comprises a box body and a top cover; the upper end of the top cover is fixedly connected with a displayscreen; a breather pipe is fixedly connected to the left side of the box body, an air outlet pipe is fixedly connected to the right side of the box body at the same height, the outer surfaces of the breather pipe and the air outlet pipe are sleeved with sealing rings and fixed to the left side and the right side of the box body respectively; a rotary table is inserted into the bottom end of the box body, and a chassis is rotationally connected to the lower end of the rotary table. According to the chemical experiment teaching safety demonstration device, in chemical experiments, an operator only needs to insert two hands into protective gloves; then, the chemical experiment is operated in the operation table of the box body through the protective gloves, potential harm on laboratory technicians is reduced; in the operation process of some gas experiments, air can be introduced into the box body through the breather pipe, meanwhile, a test tube rack can be driven by a pull rod to adjustthe height of test tubes, it is convenient for operation of experimenters; and idle test tubes can be conveniently placed in placing holes in the periphery of the chassis.

Description

technical field [0001] The invention relates to the technical field of chemical experiment safety, in particular to a safety demonstration device for chemical experiment teaching. 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. Conducted without safety precautions. [0003] However, it involves some experiments that are prone to explosion and toxic gas. If the students operate by themselves, the danger is high, and accidents are likely to pose a threat to the students' bodies. The teacher's demonstration is also dangerous. Contents of the invention [0004] The purpose of the present invention is to propose a safety demonstration device for chemical experiment teaching in order to solve the problem ...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to propose a safety demonstration device for chemical experiment teaching in order to solve the problem that some dangerous chemical experiments do not have existing safety demonstration devices

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