Blackboard eraser capable of preventing powder from scattering

A blackboard eraser and dust technology, applied in the field of blackboard erasers, can solve the problems of inability to clean up, poor wiping effect of the board eraser, flying chalk dust, etc., to ensure the service life and use effect, ensure the wiping effect, and save energy.

Inactive Publication Date: 2014-07-02
刘征宏
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] In the field of teaching, blackboards, chalks and blackboard erasers are the most common and widely used teaching tools. They bring convenience to people and also bring some harm. The biggest problem is that when wiping chalk characters, chalk dust It will fly around and be easily inhaled into

Method used

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  • Blackboard eraser capable of preventing powder from scattering
  • Blackboard eraser capable of preventing powder from scattering

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Embodiment Construction

[0010] Below in conjunction with accompanying drawing, the present invention will be further described, as figure 1 figure 2 As shown, the installation body of the present invention is a trough-shaped cover body 1, and the trough-shaped cover body 1 adopts a double-layer bottom surface, and a certain gap is provided between the bottom plate and the lower bottom plate 10 to form a hollow layer, which is used to collect chalk dust. 7. The electrostatic plate 8 and the electrostatic generator 9 are located in the hollow layer; the lower bottom plate 10 forming the hollow layer is provided with a battery installation hole 12 and a extraction hole 11 of the dust box 7 . Two or more damping shafts 2 are connected to the two parallel side walls of the trough-shaped cover body 1, four of which are shown in the figure, and rollers 3 are respectively connected to the damping shafts 2, and the four horizontally arranged rollers 3 are covered with A wiping belt 4 is connected, and when ...

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Abstract

The invention discloses a blackboard eraser capable of preventing powder from scattering. The blackboard eraser comprises a groove-shaped cover. The two parallel side walls of the groove-shaped cover are connected with two or more damping rotating shafts connected with idler wheels respectively, the two or more idler wheels are sleeved with eraser belts in a connecting mode, the end face of a bottom plate of the groove-shaped cover is provided with scraping strips, the bottom plate is provided with powder absorbing holes, and the rotating eraser belts can make contact with the scraping strips. The other end face of the bottom plate of the groove-shaped cover is connected with a detachable powder collecting box, and the bottom of the powder collecting box is connected with an electrostatic plate and an electrostatic generator. The powder is removed based on the electrostatic adsorption principle and is collected in a unifying mode, the scattering of the powder can be reduced, the wiping effect of the blackboard eraser can be improved, the blackboard eraser is convenient to use, energy is saved, and the environmental friendliness is facilitated.

Description

technical field [0001] The invention relates to a blackboard eraser capable of preventing dust from scattering, and belongs to the technical field of teaching supplies. Background technique [0002] In the field of teaching, blackboards, chalks and blackboard erasers are the most common and widely used teaching tools. They bring convenience to people and also bring some harm. The biggest problem is that when wiping chalk characters, chalk dust It will fly around and be easily inhaled into the lungs by the human body, which seriously damages the health of teachers and students who are closer to the blackboard; at the same time, the noodles on the existing board eraser cannot immediately clean up the chalk dust on the surface, resulting in the removal of the board eraser. The effect is poor. Contents of the invention [0003] The technical problem to be solved by the present invention is to provide a blackboard eraser which has a good wiping effect and can prevent dust from...

Claims

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Application Information

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IPC IPC(8): B43L21/02
Inventor 刘征宏
Owner 刘征宏
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