Electrostatic dust removing blackboard eraser capable of recovering energy

Abstract

The invention relates to a blackboard eraser, in particular to an electrostatic dust removing blackboard eraser capable of recovering energy. According to an electrostatic dust removing principle, dust is absorbed by using static electricity generated by friction; then, the dust is absorbed in a dust collecting box through an air extracting device to realize effective absorption of the dust on a blackboard from the source; by using a compound principle of frictional electricity, electrostatic induction and piezoelectric effect, friction force during erasing of the blackboard and pressure of ahand to the blackboard eraser are collected, and are converted to electric energy by a hybrid nanometer generator in a power generation device; and an additional rectifying circuit is used for charging an energy storage device, so that the electric energy is provided to the air extracting device to realize recycling of mechanical energy.

Description

technical field [0001] The invention relates to a blackboard eraser, in particular to an electrostatic dust removal blackboard eraser capable of realizing energy recovery. Background technique [0002] Blackboard eraser is an essential teaching tool. Conventional blackboard eraser has little adsorption effect on dust, making the blackboard not clean, and it is easy to cause dust flying in the classroom air, affecting the health of teachers and students; Chinese patent application number 201820584616.1 The application discloses an electrostatic dust removal blackboard eraser based on the high-voltage electrostatic field generated by the dust collection plate and the corona electrode plate. The blackboard eraser needs a dry battery to provide electric energy for it; Blackboard eraser, the blackboard eraser sucks the electrostatically adsorbed dust into the ash collection box through the air extraction device, and uses dry batteries to provide power for the air extraction devic...

AI Technical Summary

Problems solved by technology

[0002] Blackboard eraser is an essential teaching tool. Conventional blackboard eraser has little adsorption effect on dust, making the blackboard not clean, and it is easy to cause dust flying in the classroom air, affecting the health of teachers and students; Chinese patent application number 201820584616.1 The application discloses an electrostatic dust removal blackboard eraser based on the high-voltage electrostatic field generated by the dust collection plate and the corona electrode plate. The blackboard eraser needs a dry battery to provide electric energy for it; Blackboard eraser, the blackboard eraser sucks the electrostatically adsorbed dust into the ash collection box through the air extraction device, and uses dry batteries to provide power for the air extraction device; these blackboard erasers need to be replaced in time, and the battery life is very short. It affects the use and causes a great waste of resources; as we all know, the spread of chalk dust in the classroom will cause harm to the health of teachers and students. The service life of dry batteries is short, and a large amount of use will waste resources. will cause great harm to the environment

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