Mechanical dust-proof eraser

A blackboard erasing and mechanical technology, which is applied to the cleaning device of blackboard or slate, printing, office supplies, etc., can solve the problems of high installation and maintenance cost, affecting teaching efficiency, affecting teaching effect, etc., to achieve compact structure and ensure fan Rotation speed, the effect of improving the dust phenomenon
CN106346993AInactive Publication Date: 2017-01-25JIANGSU UNIV
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Patent Information

Authority / Receiving Office
CN Β· China
Patent Type
Applications(China)
Current Assignee / Owner
JIANGSU UNIV
Publication Date
2017-01-25
Estimated Expiration
Not applicable Β· inactive patent

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Abstract

The invention refers to a mechanical dust-proof eraser, comprising a scrubbing brush and an eraser shell, wherein the scrubbing brush is full of gaps, the eraser shell has clapboard inside, the upward side of clapboard has gear drive mechanism which can make the primary fan and secondary fan turn, the downward side of clapboard has primary fan and secondary fan, wherein the primary fan and secondary fan are all facing the gaps on the scrubbing brush. The technical proposal of eraser completely uses the friction between eraser and blackboard as power source during using without electricity or changing battery which has lower cost. In additional, the eraser can also realize multi-level acceleration and guarantee the rotary speed of the fan, adequate suction of the two fans to the greatest extent possible.
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Description

technical field

[0001] The invention relates to a mechanical dustproof blackboard eraser, which is suitable for various places where chalk is used for writing. Background technique

[0002] With the development of modern science and technology, multimedia teaching has entered our teaching classroom more and more, and has a tendency to gradually replace the traditional blackboard teaching method. Nevertheless, for many courses, the effect of multimedia teaching is not obvious, such as mathematics, English and so on. Therefore, the traditional blackboard teaching cannot be completely replaced. However, the dust generated in the traditional blackboard teaching process seriously endangers the health of students and teachers. Despite the existence of dust-free chalk, the dust flying during the wiping process is still very serious, becoming a threat to the health of students and teachers. a major killer.

[0003] At present, the research on blackboard eraser at home and abroad ...

Claims

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