Blackboard eraser dust remover

Abstract

The invention provides a device for removing dust on a blackboard eraser. The blackboard eraser dust remover comprises a box cover, a shell, a dust removing device, a dust absorbing device and a purifying device. A bearing boss is arranged in the middle portion of the inner side wall of the shell of the blackboard eraser dust remover, the dust removing device is arranged above the bearing boss, and the dust absorbing device is arranged below the bearing boss and connected with the purifying device on the lower portion through a hose. The purifying device is composed of a purifying bottle, an air inlet is formed in the top of the purifying bottle, and the diameter of the air inlet is larger than the diameter of the hose. The purifying bottle internally contains purifying liquid, and the end opening of the hose is lower than the liquid level. By means of the blackboard eraser dust remover, the situation that in the past, when the eraser is cleaned and flapped manually, chalk dust flies around is changed, and harm to teachers and students from chalk dust can be effectively prevented.

Description

technical field [0001] The invention relates to a dust remover, in particular to a chalk wiping dust remover capable of removing and purifying chalk dust. Background technique [0002] At present, in the teaching of various schools, although the use of electric teaching and erasable ink pens is becoming more and more popular. However, it is undeniable that the blackboard is still a basic teaching tool widely used due to its unique advantages. There are also many teachers who use chalk to write on the blackboard, and still use a large number of wooden boards with felt wool structure without vacuum function. vintage blackboard eraser. There is too much chalk dust on the blackboard eraser and the blackboard eraser is not clean, which affects writing and reading. It is necessary to pat the chalk dust on the blackboard eraser frequently before continuing to use it; Air pollution affects people's health. [0003] In order to improve the teaching environment, a dust-absorbing bl...

AI Technical Summary

Problems solved by technology

The existing dust-absorbing blackboard eraser includes a housing with a flow guide, a wiper plate with dust suction holes and bristles, an exhaust fan and a dust bag. The disadvantages of this structure are due to the change of the commonly used The shape of the blackboard eraser and the increased weight of the blackboard eraser are inconvenient to use, and the production cost is relatively high, and it is easy to break

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