Electrostatic precipitation blackboard eraser

Abstract

The invention discloses an electrostatic precipitation blackboard eraser. The electrostatic precipitation blackboard eraser comprises nylon columns, a sheet and an electrostatic generation device, wherein a plurality of nylon columns are arranged on the upper end surface of a blackboard eraser casing in parallel, dust suction slots are formed in the upper ends of the nylon columns, a dust collecting slot is formed between every two adjacent nylon columns, and dust outlet holes are formed in the side ends of the nylon columns and are structures for communicating the dust suction slots and the dust collecting slots; a plurality of flanges and notches are formed in the front end surface and the rear end surface of the blackboard eraser casing; a switch is mounted in the middle of the right end surface of the blackboard eraser casing; the sheet is mounted above an upper cover press plate, the electrostatic generation device is electrically connected with the sheet and electrically connected with the switch through a wire, a lower cover press plate is mounted below the electrostatic generation device, a chopstick storage box provided with an end cover is arranged on the left end surface of the blackboard eraser casing, a Velcro is arranged on the lower end surface, and a telescopic rod is arranged at the middle-lower part of the right end surface. The electrostatic precipitation blackboard eraser is convenient and practical and can adsorb dust through static electricity, and accordingly, body health of teachers and students is protected.

Description

technical field [0001] The invention relates to the technical field of teaching appliances, in particular to an electrostatic dust-absorbing blackboard eraser. Background technique [0002] The blackboard is a very commonly used teaching tool. Teachers achieve the purpose of educating students by writing teaching content on the blackboard with chalk. Writing with chalk will cause a lot of chalk dust, and when using blackboard eraser to wipe the blackboard, there will be a lot of chalk dust flying to pollute the environment and fall on teachers and students, dirtying clothes and exposed hair and skin. There is no blackboard eraser that can reduce the flying problem of chalk dust. When erasing chalk characters with a blackboard eraser, chalk dust flew everywhere, causing many teachers to suffer from occupational diseases. The advent of dust-free chalk, a good solution to this problem. Chalk words written with dust-free chalk will not fly around when erased with a blackboard...

AI Technical Summary

Problems solved by technology

When the chalk dust sticking to the blackboard eraser is to be slapped off, the chalk dust will also fly around. There is often a thick layer of chalk dust on the teacher's podium and desk, which may stain the teacher's clothes and places at any time. books on desk

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