Automatic dust cleaner for blackboard eraser

Abstract

The invention discloses an automatic dust cleaner for a blackboard eraser, comprising a square box (2) provided with a box cover, a dust collection box (8) and a fan (3), wherein the dust collection box (8) is connected with one end of the square box (2), an upper opening of the dust collection box (8) is communicated with the square box (2), the bottom of the dust collection box is provided with an air outlet opening, and the air outlet opening is covered by a ventilative sponge block (9) which can prevent dust from passing through; the fan (3) is fixed at the other end of the square box (2), and an outlet of the fan (3) is communicated with the square box (2); and two supporting plates (6) which are fixed parallel to the bottom of the square box are arranged in the square box (2), the clearance between the two supporting plates adapts to the width of the blackboard eraser, magnets (5) with different polarities are respectively fixed on the two supporting plates between which a screen mesh (4) is fixed, and a vibrator (7) is arranged on the screen mesh (4). The automatic dust cleaner for the blackboard eraser is convenient and fast to clean dust on the blackboard eraser without causing environmental pollution which harms bodies of teachers and students.

Description

Technical field [0001] The invention relates to a dust cleaning device for a blackboard eraser, in particular to an automatic blackboard eraser. Background technique [0002] The blackboard eraser is a widely used teaching tool. The main function of the blackboard eraser is to erase the chalk writing on the blackboard. After erasing, a large amount of chalk dust will remain on the blackboard eraser. The commonly used cleaning method is to hit the blackboard eraser against other fixed objects to shake off the chalk dust on the blackboard eraser. The disadvantage of the above ash removal method is that although the chalk ash can be removed, because there is no collecting device, the chalk ash is scattered everywhere, which not only pollutes the environment, but also harms the bodies of teachers and students. Summary of the invention [0003] The purpose of the present invention is to solve the problem that when the existing blackboard eraser is used to remove the chalk dust, the d...

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to solve the problem that when the existing blackboard eraser is used to remove chalk dust, the dust will fly, the environment will be easily polluted, and the health of teachers and students will be harmed.

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