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Dust-absorbing blackboard eraser

A blackboard wiper and honeycomb hole technology, which is applied to the cleaning device of blackboard or slate, printing, office supplies, etc., can solve the problems of good vacuuming effect, thousands of prices, piles of dust, etc., to achieve obvious wiping effect and enhance circulation. The effect of large dust collecting area

Inactive Publication Date: 2016-06-29
黄自武
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, the traditional writing on the blackboard is manual. The writer writes on the entire blackboard and wipes the blackboard by himself, causing chalk dust to fly in the classroom, and piles of dust on the podium and in the blackboard groove after class. Its suffering, health has also been incalculable harm
[0004] Like this just need to make a kind of blackboard eraser that can effectively reduce classroom dust pollution, in the prior art, existing many blackboard erasers with dust-absorbing function, but effect is all not very good; In addition, some are under the blackboard A large vacuum landline is installed on the wall, and the blackboard eraser is connected to the landline through pipes. The vacuuming effect is good, but it has limitations, cannot be moved, and the cost is high, and the price is thousands of dollars; there is also a complete reform of the blackboard, which is not used at all. Chalk, such a high-tech product, is not affordable by ordinary schools

Method used

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  • Dust-absorbing blackboard eraser

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Embodiment Construction

[0036] Below in conjunction with accompanying drawing and specific embodiment the present invention is described in further detail:

[0037] Such as figure 1 As shown, a dust-absorbing blackboard eraser includes a powder storage box 2, a dust-wiping cotton 1 attached to the bottom of the powder storage box 2, a filter device 3 arranged in the powder storage box 2 and a device connected to the powder storage box 2. Air extraction device 4;

[0038] Such as figure 2 As shown, the dust-wiping cotton 1 is emery fiber cloth 12, and the material of the emery fiber cloth 12 is relatively rough. On the one hand, it is easy to wipe off chalk dust, and on the other hand, it is easy to replace and the price is low; Sponge 11, melamine sponge 11 material is soft, can clean up chalk dust; Preferably, add melamine sponge 11 in the middle of emery fiber cloth 12, by the combination of emery fiber cloth 12 and melamine sponge 11, chalk can be The ash is wiped very clean; alternatively, th...

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Abstract

The invention relates to the field of teaching equipment, in particular to a dust-absorbing blackboard eraser. The dust-absorbing blackboard eraser comprises a dust storage box, dust wiping cotton attached to the bottom of the dust storage box, a filtering device arranged in the dust storage box and an air exhausting device connected with the dust storage box; honeycomb holes and grooves connected with the honeycomb holes are formed in the dust wiping cotton; and dust absorbing holes corresponding to the honeycomb holes are formed in the bottom of the dust storage box. The invention aims at providing the dust-absorbing blackboard eraser which is low in price and is capable of effectively reducing dust pollution of a classroom.

Description

technical field [0001] The invention relates to the field of teaching equipment, in particular to a dust-absorbing blackboard eraser. Background technique [0002] Most of the teaching occasions, blackboard is an indispensable teaching tool, in all kinds of schools across the country, the vast majority still use cheap chalk and blackboard for teaching. [0003] At present, the traditional writing on the blackboard is manual. The writer writes on the entire blackboard and wipes the blackboard by himself, causing chalk dust to fly in the classroom, and piles of dust on the podium and in the blackboard groove after class. Its suffering, health has also been immeasurable harm. [0004] Like this just need to make a kind of blackboard eraser that can effectively reduce classroom dust pollution, in the prior art, existing many blackboard erasers with dust-absorbing function, but effect is all not very good; In addition, some are under the blackboard A large vacuum landline is in...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B43L21/02
CPCB43L21/02
Inventor 黄自武
Owner 黄自武
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