Teaching chalk dust collecting system

Abstract

The invention discloses a teaching chalk dust collecting system, wherein a cavity is formed inside a blackboard eraser, and a plurality of dust absorption holes are formed at the periphery of the blackboard eraser and communicated with the cavity; all blackboard erasers are connected with corresponding chalk dust collection pipes, respectively, the chalk dust collection pipes are communicated with the cavity, an air draft device is arranged in each chalk dust collection pipe, the other ends of all the chalk dust collection pipes are communicated with a chalk dust collection chamber, and water for dissolving the chalk dust is held at the bottom of the chalk dust collection chamber. The chalk dust collection chamber suppresses harm on the environment due to the chalk dust flying everywhere, reduces the harm of the chalk dust to the health of teachers and students, and is advantageous for creating an excellent teaching environment. Most part of chalk dust can be absorbed in the chalk dust collection chamber by virtue of the chalk dust collection pipes and the air draft devices, and therefore, secondary recovery and reutilization of the chalk dust can be realized, and waste is turned into wealth.

Description

technical field [0001] The invention relates to the improvement of teaching auxiliary technology, in particular to a system for collecting chalk dust produced by writing on a blackboard with chalk. [0002] Background technique [0003] In the teaching activities of schools, chalk is still widely used at present. The harm of chalk is self-evident to everyone. It not only forms chalk dust and dust into the air, endangering the surrounding environment, but more importantly, it has seriously threatened the physical and mental health of teachers. Many front-line teachers suffer from lung diseases because of this. The culprit is chalk dust. This phenomenon is even more serious among teachers in impoverished and remote areas, because they use chalk to write on the blackboard for a long time, and cannot get good rest and treatment. On the other hand, chalk dust can be recycled and reused, but the current situation is that not only has it not been effectively recycled and reused,...

AI Technical Summary

Problems solved by technology

This phenomenon is even more serious among teachers in poor and remote areas, because they use chalk on the blackboard for a long time and cannot get good rest and treatment

On the other hand, chalk dust can be recycled and reused, but the current situation is that not only has it not been effectively recycled and reused, but it has also become a factor that is harmful to health in everyone's eyes, that is, things that are useful in themselves have not been used by everyone. , but become the object of everyone's hatred, which is a contradiction and causes losses in two aspects

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