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A water-sprayable electrostatic vacuum blackboard eraser

An electrostatic vacuuming and blackboard erasing technology, applied in the field of education and teaching, can solve the problems of difficulty in erasing, polluting the handwriting in the environment, and flying dust when erasing the blackboard, etc. Effect

Inactive Publication Date: 2017-05-17
汪乐雯
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The problem to be solved by the present invention is to provide a water-sprayable electrostatic dust-absorbing blackboard eraser, which solves the problems of flying dust, polluting the environment and difficult to erase writing when using a blackboard eraser in the past

Method used

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  • A water-sprayable electrostatic vacuum blackboard eraser
  • A water-sprayable electrostatic vacuum blackboard eraser
  • A water-sprayable electrostatic vacuum blackboard eraser

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] like Figure 1-Figure 3 The described electrostatic vacuum blackboard eraser that can be sprayed with water comprises an insulating box body 8 and a water sprayer. The insulating box body 8 is a hollow rectangular structure with an opening on one side. The inside of the hollow rectangular structure is an installation cavity, and the opening of the installation cavity An insulating brush 1, an aluminum foil 2 and a plastic plate 5 are provided in sequence from the outside to the inside, the aluminum foil 2 is bonded to the plastic plate 5 by solid glue 4, and the surrounding edges of the aluminum foil 2 and the plastic plate 5 are all insulated The bonding plate 3 is glued on the inner side of the opening end of the insulating box body 8, and the inside of the installation cavity is separated by an isolating horizontal plate 10 to form an upper chamber and a lower chamber isolated from each other, and a fixed box 7 is arranged inside the upper chamber. The fixed box 7 is...

Embodiment 2

[0024] In this embodiment, the following structure is added on the basis of Embodiment 1: the side of the insulating box 8 is also provided with a control switch 6 for connecting or disconnecting wires.

[0025] The control switch 6 of the present embodiment can control the connection or disconnection of the wire, so that the wire can be disconnected without using the blackboard eraser, avoiding static electricity when not in use, and preventing teachers and students from beating hands due to static electricity when in use.

Embodiment 3

[0027] In this embodiment, the following structure is added on the basis of embodiment 1 or embodiment 2, specifically: a handle 12 is provided on the outer surface of the other end surface of the insulating box 8 located at the open end.

[0028] In order to facilitate the use and pick-and-place of this embodiment, and to reduce the contact between the hands of the human body and the insulating box body 8, a handle 12 is specially provided on the outer side of the other end surface of the insulating box body 8 at the open end, so that teachers and students can hold the handle 12 for blackboarding. Easy to erase.

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PUM

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Abstract

The invention discloses an electrostatic dust sucking blackboard eraser capable of spraying water. The electrostatic dust sucking blackboard eraser comprises an insulation box and a water sprayer. A blackboard hairbrush, aluminum foil and a plastic plate are arranged in an installing cavity of the insulation box. The installing cavity is divided into an upper chamber and a lower chamber. A fixing box is arranged in the upper chamber. Tourmaline is arranged in the fixing box and connected with the plastic plate. A vertical partition plate is arranged in the middle in the lower chamber. The lower chamber is divided into a dust accumulating chamber and an isolating chamber through the vertical partition plate. A filtering net is arranged at the upper end of the vertical partition plate. A dust suction fan is arranged in the isolating chamber. The aluminum foil and the plastic plate are provided with dust inlet holes communicated with the dust accumulating chamber. The water sprayer comprises a water storage cylinder. An atomizing sprayer and a water outlet button are arranged at the two ends of the water storage cylinder respectively. A buckle is arranged on the circumferential face of the water storage cylinder. A clamping block with a clamping groove is arranged on the outer side of the upper end face of the insulation box, and the water sprayer is matched with the clamping groove through the buckle. The water sprayer can be used for spraying water, handwriting hard to wipe can be wiped away, and a blackboard is kept clean and cannot be wet.

Description

technical field [0001] The invention relates to a teaching appliance, which belongs to the field of education and teaching, in particular to a water-sprayable electrostatic dust-absorbing blackboard eraser. Background technique [0002] In traditional method teaching, the blackboard is an essential facility in every classroom. After writing with chalk on the blackboard, when it is not needed, it will be erased with a blackboard eraser. Most of the blackboard erasers in the past are pure main body plus a brush. When erasing, the dust of chalk dust will fly around, especially when removing or removing the dust adsorbed on the blackboard eraser, there will be more dust, thus Pollution of the environment has brought harm to the health of teachers and students. Many teachers suffer from respiratory diseases. Some blackboards that have been used for a long time or are of poor quality are difficult to wipe clean, which brings inconvenience to cleaning on duty. Contents of the inv...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B43L21/00B43L21/02
Inventor 汪乐雯
Owner 汪乐雯