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An automatic chalk-dust-absorbing blackboard eraser

A blackboard eraser and dust technology, which is applied in the field of teaching supplies, can solve the problems that teachers are susceptible to respiratory and lung diseases, pollute the environment, and have no prevention and control measures, so as to relieve teachers from long-term inhalation of dust and suffering from illness, and eliminate gaps and dust flying , the effect of avoiding environmental pollution

Inactive Publication Date: 2011-05-04
王涛
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, the teaching in primary and middle schools is still basically that the teacher writes on the blackboard with chalk. When the traditional blackboard is used to wipe the blackboard, the dust flies and pollutes the environment. Teachers inhale the dust and easily infect the respiratory tract and lung diseases.
For many years, there has been no fundamental control measures

Method used

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  • An automatic chalk-dust-absorbing blackboard eraser
  • An automatic chalk-dust-absorbing blackboard eraser
  • An automatic chalk-dust-absorbing blackboard eraser

Examples

Experimental program
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Effect test

Embodiment Construction

[0019] When wiping the blackboard, hold the housing with the baffle facing down. Press the foam roller into contact with the blackboard, then drive the blackboard eraser left and right, and the roller will roll on the blackboard. When in contact with the powder stain, it is pasted on the surface of the rubbing and rolling. When the pasted powder trace rolls into the shell, it is scraped off by the scraper and sucked into the shell. When there is a lot of dust inhaled, pull the baffle to clear the dust.

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PUM

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Abstract

An automatic chalk-dust-absorbing blackboard eraser comprises a shell, a scraper plate, a baffle plate, rolling wheels and a supporting bar. The invention is used by primary and middle school teachers to clean the blackboard and belongs to the teaching article technical field. The invention can automatically absorb chalk dust into the shell when a teacher is cleaning the blackboard. Thus, the invention can remove chalk dust, avoid environment pollution and fundamentally solve the problem of chalk-dust-absorption by teachers.

Description

Technical field [0001] The self-suction dust blackboard eraser of the present invention is composed of a shell, a scraper, a baffle, a wiper and a support rod, and is used for primary and middle school teachers to wipe blackboards, and belongs to the technical field of teaching supplies. Background technique [0002] At present, teaching in primary and secondary schools is still basically that teachers use chalk to write on the blackboard. When wiping the blackboard with traditional blackboards, dust flies and pollutes the environment. Teachers inhale dust and easily infect respiratory and lung diseases. For many years, there has been no fundamental control measures. Although some colleges and universities use projection teaching and wall chart teaching, blackboard teaching still accounts for a large proportion. Contents of the invention [0003] The self-suction dust blackboard eraser of the present invention can automatically suck powder traces into the casing when wipi...

Claims

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Application Information

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IPC IPC(8): B43L21/02
Inventor 王涛
Owner 王涛
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