Dust-free blackboard eraser

Abstract

The dust-free blackboard eraser comprises a fan and a battery arranged on one side of the fan, an air inlet is formed in one side of the fan, a roller eraser is arranged on the other side of the fan, a USB interface is formed in one side of the battery, an electric quantity displayer and a switch are arranged on one side of the fan, and a dust storage chamber is arranged on the outer side of the roller eraser and used for storing dust of the roller eraser. By adopting the structures such as the power supply battery, the fan, the roller, the partition plate and the exhaust fan, dust can be collected while the blackboard is erased, dust overflow is avoided, and the indoor environment of teachers and students is guaranteed. The roller eraser rolls to erase the blackboard, and the erasing process is time-saving and labor-saving; the electric quantity display and the switch are adopted to display electric quantity in real time, practicability is high, and application and popularization are suggested.

Description

technical field [0001] The invention relates to the field of blackboard erasers, in particular to a dust-free blackboard eraser. Background technique [0002] Blackboard eraser and blackboard are essential cultural and educational supplies in teaching activities. In the teaching process, when the general blackboard eraser wipes the chalk writing, it will cause the phenomenon of dust flying everywhere, which not only affects the teaching and pollutes the environment, but also the main component of chalk dust is calcium carbonate or calcium sulfate, and the dust is easy to affect the lungs of teachers and students. , upper respiratory tract, eyes, ears and skin. At present, the structure of the blackboard eraser in the prior art is relatively simple, which seriously affects the health of teachers and students when used. Therefore, the blackboard eraser structure of the prior art cannot satisfy people's demands on it. [0003] Therefore, a kind of dust-free blackboard eraser...

AI Technical Summary

Problems solved by technology

In the teaching process, when the general blackboard eraser wipes the chalk writing, it will cause the phenomenon of dust flying everywhere, which not only affects the teaching and pollutes the environment, but also the main component of chalk dust is calcium carbonate or calcium sulfate, and the dust is easy to affect the lungs of teachers and students. , upper respiratory tract, eyes, ears and skin hazards

At present, the structure of the blackboard eraser in the prior art is relatively simple, which seriously affects the health of teachers and students during use.

Therefore, the blackboard eraser structure in the prior art can not satisfy people's demand for it

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