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Environmentally-friendly automatic chalk eraser and erasing method

A chalk erasing and automatic technology, applied in printing, blackboard or slate cleaning devices, office supplies, etc., can solve the problems of getting into the eyes, affecting the health of students, and low cleaning efficiency, and achieves fast cleaning, simple structure, and high performance. various effects

Inactive Publication Date: 2015-03-18
HUZHOU NANXUN XIANGLONG WOOD FACTORY
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

This kind of blackboard eraser can meet the needs of erasing chalk characters, but it will produce a lot of chalk powder when it is used, and some chalk powder will be directly sucked into the body of the students, and some will enter the eyes, which will affect the health of students after a long time. Moreover, this kind of blackboard eraser can only be cleaned in small pieces, and the cleaning efficiency is relatively low

Method used

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  • Environmentally-friendly automatic chalk eraser and erasing method

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Embodiment Construction

[0013] The present invention will be further described below in conjunction with the accompanying drawings and embodiments, but not as a basis for limiting the present invention.

[0014] Example. A kind of environmental protection automatic chalk eraser, constitutes as figure 1 Shown, comprise a box body 3, the front portion of box body 3 and rear portion are respectively provided with a group of driving wheels 5, and the back of box body 3 is provided with an exhaust fan 2, and exhaust fan 2 is provided with a box body 1, box body The rear end of 1 is provided with filter screen 6, and the front end of box body 3 is provided with a group of rotating cotton wipes 4.

[0015] There is a space between the box body 3 and the blackboard to generate negative pressure.

[0016] The distance between the box body 3 and the blackboard is 2-5mm, so that it has a suitable negative pressure.

[0017] There are 7-11 pieces of said one group of rotating cotton wipes 4.

[0018] The era...

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Abstract

The invention discloses an environmentally-friendly automatic chalk eraser and an erasing method. The environmentally-friendly automatic chalk eraser comprises a box body (3); a group of driving wheels (5) is arranged at each of the front part and the rear part of the box body (3); an induced draft fan (2) is arranged on the back of the box body (3); a container body (1) is arranged on the induced draft fan (2), and a filter screen (6) is arranged at the rear end of the container body (1); a group of rotating cotton erasers (4) is arranged at the front end of the box body (3). The erasing method comprises the steps of absorbing the box body to a blackboard with negative pressure through the induced draft fan; moving through the driving wheels; erasing the chalk writing through the rotary cotton eraser; absorbing the dust into the container body through the induced draft fan; discharging the air through the filter screen. With the adoption of the environmentally-friendly automatic chalk eraser, the blackboard can be automatically cleaned; in addition, the dust can be absorbed; therefore, the environment is protected.

Description

technical field [0001] The invention relates to a blackboard cleaning device and method, in particular to an environment-friendly automatic chalk eraser and erasing method applied to blackboards. Background technique [0002] At present, in most schools, blackboard and chalk are still main teaching supplies, yet in the teaching process, the chalk writing on the blackboard needs to be often erased with a blackboard eraser. General blackboard eraser, its structure comprises wipe board and the erasing body that is fixed on one side of wipe board usually. This kind of blackboard eraser can meet the needs of erasing chalk characters, but it will produce a lot of chalk powder when it is used, a part of the chalk powder will be directly sucked into the body of the students, and some will enter the eyes, which will affect the health of the students after a long time. And this kind of blackboard eraser can only be cleaned in small pieces, and the cleaning efficiency is relatively lo...

Claims

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Application Information

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IPC IPC(8): B43L21/02
CPCB43L21/02
Inventor 吴国权
Owner HUZHOU NANXUN XIANGLONG WOOD FACTORY
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