CN201931881U - Dust-suction blackboard eraser - Google Patents
Dust-suction blackboard eraser Download PDFInfo
- Publication number
- CN201931881U CN201931881U CN2010206134543U CN201020613454U CN201931881U CN 201931881 U CN201931881 U CN 201931881U CN 2010206134543 U CN2010206134543 U CN 2010206134543U CN 201020613454 U CN201020613454 U CN 201020613454U CN 201931881 U CN201931881 U CN 201931881U
- Authority
- CN
- China
- Prior art keywords
- dust
- blackboard eraser
- handle
- cavity
- utility
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 239000000428 dust Substances 0.000 abstract description 14
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 abstract description 10
- 238000009423 ventilation Methods 0.000 abstract description 3
- 208000027418 Wounds and injury Diseases 0.000 abstract description 2
- 230000006378 damage Effects 0.000 abstract description 2
- 208000014674 injury Diseases 0.000 abstract description 2
- 238000010521 absorption reaction Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 208000002925 dental caries Diseases 0.000 description 1
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- Cleaning In General (AREA)
Abstract
The utility model relates to a dust-suction blackboard eraser belonging to a teaching tool. The problem that the health of teachers and students is influenced by chalk powder scattered when a blackboard is cleaned is mainly solved. The utility model has the structure that the dust-suction blackboard eraser comprises a handle and bristles, wherein a hollow cavity of which both ends are in air ventilation is arranged in the handle, the front end of the hollow cavity is provided with an electric fan, the back end of the hollow cavity is provided with a detachable dust collection bag, the bristles are arranged below the handle, a plurality of through holes are evenly arranged between the bristles, and the through holes and the hollow cavity are communicated. According to the dust-suction blackboard eraser disclosed by the utility model, the chalk powder is collected into the dust collection bag by utilizing flowing airflow, the chalk powder scattered into the air is reduced, and the injury to the teachers and the students caused by dust can be reduced.
Description
Technical field
The utility model relates to a kind of educational aid, specifically a kind of blackboard eraser.
Background technology
Blackboard eraser is one of instrument commonly used in the teaching process, but existing blackboard eraser in use, and a large amount of chalk powder meeting dissipations influence the health of teacher and student in air.
The utility model content
The purpose of this utility model is to provide a kind of dust absorption blackboard eraser, and the chalk powder that mainly solves dissipation when erasing the board influences the healthy problem of teachers and students.
The technical scheme in the invention for solving the technical problem is: a kind of dust absorption blackboard eraser, its structure comprises handle and bristle, be provided with the cavity of two ends ventilation in the described handle, the front end of cavity is provided with electric fan, the cavity rear end is provided with the dust bag of dismounting, be provided with bristle below the handle, evenly be provided with a plurality of through holes between the described bristle, described through hole communicates with cavity.
The beneficial effects of the utility model are: the utility model utilizes airflow flowing that chalk powder is collected in the dust bag, has reduced being emitted to airborne chalk powder, can reduce the dust injury that teachers and students are subjected to.
Description of drawings
Fig. 1 is a structural representation of the present utility model;
Among the figure: 1 dust bag, 2 cavitys, 3 through holes, 4 bristles, 5 handles, 6 electric fans.
The specific embodiment
As shown in Figure 1.A kind of dust absorption blackboard eraser, its structure comprises handle 5 and bristle 4, be provided with the cavity 2 of two ends ventilation in the described handle 5, the front end of cavity 2 is provided with electric fan 6, the cavity rear end is provided with the dust bag 1 of dismounting, be provided with bristle 4 below the handle 5, evenly be provided with a plurality of through holes 3 between the described bristle, described through hole 3 communicates with cavity 2.During use, open by battery-driven electric fan 6, air-flow can along cavity 2 flow backward, get rid of from cavity 2 rear portions by ventilative dust bag 1 then.In the flow process, cavity 2 internal gas pressures reduce air-flow in cavity 2, can be inhaled in the cavity 2 by through hole 3 by the chalk powder under bristle 4 brushes and go, and chalk powder is stopped by dust bag 1 and collecting then.The function of the chalk powder during realization purifies air.
Claims (1)
1. dust absorption blackboard eraser, comprise handle and bristle, it is characterized in that, be provided with the cavity of two ends ventilation in the described handle, the front end of cavity is provided with electric fan, and the cavity rear end is provided with the dust bag of dismounting, is provided with bristle below the handle, evenly be provided with a plurality of through holes between the described bristle, described through hole communicates with cavity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206134543U CN201931881U (en) | 2010-11-18 | 2010-11-18 | Dust-suction blackboard eraser |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206134543U CN201931881U (en) | 2010-11-18 | 2010-11-18 | Dust-suction blackboard eraser |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201931881U true CN201931881U (en) | 2011-08-17 |
Family
ID=44443418
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010206134543U Expired - Fee Related CN201931881U (en) | 2010-11-18 | 2010-11-18 | Dust-suction blackboard eraser |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201931881U (en) |
-
2010
- 2010-11-18 CN CN2010206134543U patent/CN201931881U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110817 Termination date: 20111118 |