Blackboard eraser and blackboard eraser cleaning device

Abstract

The invention provides a blackboard eraser and a blackboard eraser cleaning device. According to the blackboard eraser provided by the invention, a negative pressure is formed by utilizing an extraction pump to guide chalk dust to electrostatic absorption paper, the electrostatic absorption paper absorbs the chalk dust, then the erased chalk dust cannot fly around and pollute hands, clothes and faces, and after full absorbing the chalk dust, the electrostatic absorption paper can be directly torn down to be replaced; rapid cleaning on the chalk dust on the blackboard eraser is completed by theblackboard eraser cleaning device, and by utilizing the working principle of a crank sliding block, a driving block reciprocates up and down to generate vibration for a felt so as to clean up the chalk dust accumulated on the felt, thereby improving cleaning efficiency and effect; and the cleaning process is completed in an enclosed shell, and the chalk dust is absorbed by utilizing wet cloth soas to avoid damage of dust inhalation to body health in the cleaning process.

Description

technical field [0001] The invention relates to the technical field of teaching supplies, in particular to a blackboard eraser and a blackboard eraser cleaning device. Background technique [0002] The blackboard does not specifically refer to the black board surface. In the traditional sense, it is a plane that can be written repeatedly with chalk. The board surface is hard and is mostly used for teaching. Blackboards are generally made of wood or frosted glass, and can be written with chalk and other specific materials. Material to write on. Blackboard eraser is one of the requisite supporting tools for blackboard. Existing blackboard eraser is simple in structure, generally in a rectangular structure, and is generally made of a material such as felt on a wooden board that is easy to wipe off chalk writing. When wiping a blackboard, Although the chalk writing has been wiped off, there are the following problems: the one is that the chalk dust that has been wiped off will ...

AI Technical Summary

Problems solved by technology

Blackboard eraser is one of the requisite supporting tools for blackboard. Existing blackboard eraser is simple in structure, generally in a rectangular structure, and is generally made of a material such as felt on a wooden board that is easy to wipe off chalk writing. When wiping a blackboard, Although the chalk writing has been wiped off, there are the following problems: the one is that the chalk dust that has been wiped off will fly everywhere, making hands, clothes and faces dirty, and long-term inhalation of dust is harmful to the health of students and teachers; As the number of times increases, there will be more and more chalk dust accumulated on the blackboard eraser, and the chalk on the blackboard will become less and less clean. At this time, it is necessary to clean the accumulated dust on the blackboard eraser. Wipe the hard surface such as the blackboard or desk, and use the generated force to shake off the dust on the blackboard eraser, but the effect of this is not good, and it is time-consuming and labor-intensive

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