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Environment-friendly blackboard eraser

An environment-friendly blackboard and blackboard eraser technology, which is applied to blackboard or slate cleaning devices, printing, office supplies, etc., can solve the problems of endangering human health, unusable chalk dust, flying chalk dust, etc., to achieve effective use and reduce harm to the human body Healthy, Quantitative Effects

Inactive Publication Date: 2020-05-15
NANJING UNIV OF INFORMATION SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Blackboards are widely used in teaching. When erasing chalk writing with a chalk eraser, it will cause chalk dust to fly. Inhalation of the respiratory tract will endanger human health. The dropped chalk dust cannot be used

Method used

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Embodiment Construction

[0007] The technical solution of the present invention will be further described below in conjunction with the accompanying drawings.

[0008] Such as figure 1 As shown, the present invention includes a blackboard eraser main body 1, the lower surface of the main body is provided with at least one opening, and a rotating brush 4 is arranged in the opening, and the rotation axis of the rotating brush 4 is in the same plane as the lower surface of the blackboard eraser main body. The rotating brush 4 rotates under the control of the motor, and when the brush rotates, the air turbine formed can inhale the chalk dust, which plays the role of erasing chalk writing and preventing dust. The motor can be built into the main body of the blackboard eraser.

[0009] The blackboard eraser main body 1 is provided with a connected chalk ash channel 6, which includes a horizontal channel 61 located at the bottom of the main body and a vertical channel 62 located at the side of the main body...

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Abstract

The invention discloses an environment-friendly blackboard eraser which comprises a blackboard eraser body. At least one opening is formed in the lower surface of the body. A rotating brush is arranged in each opening and controlled by a motor in the body. Communicating chalk dust channels are formed in the body and include the transverse channel formed in the bottom of the body and the vertical channel formed in one side of the body. The tail end of the vertical channel is provided with an air outlet. One side of the top of the vertical channel is provided with an opening in the direction towards the interior of the body, and the opening communicates with a dust collecting area on the top of the body. The dust collecting area is provided with a water inlet and is in an inverted triangularshape, and the top of the triangular dust collecting area is provided with a storage chamber. When chalk dust is prevented from flying, chalk handwriting is erased, meanwhile the chalk dust is storedto produce regenerated chalks, the number of purchased chalks is reduced, the harm of the chalk dust to human health is reduced, and the chalk dust is effectively utilized.

Description

technical field [0001] The invention relates to an environment-friendly blackboard eraser. Background technique [0002] Blackboards are widely used in teaching. When erasing chalk writing with a chalk eraser, it will cause chalk dust to fly. Inhalation of the respiratory tract will endanger human health, and the dropped chalk dust cannot be used. How to effectively obtain chalk dust and avoid flying up is a problem that needs to be considered in the design of the present invention to effectively utilize chalk dust. Contents of the invention [0003] Purpose of the invention: the present invention aims to provide an environmentally friendly blackboard eraser to solve the above problems. [0004] Technical solution: The environment-friendly blackboard eraser of the present invention includes a blackboard eraser main body, at least one opening is provided on the lower surface of the main body, and a rotating brush is arranged in the opening, and the brush is controlled by a...

Claims

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Application Information

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IPC IPC(8): B43L21/02B43K19/00C09D13/00
CPCB43K19/003B43L21/02C09D13/00
Inventor 黄子欣
Owner NANJING UNIV OF INFORMATION SCI & TECH
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