CN201329732Y - Blackboard chalk dust collecting device - Google Patents
Blackboard chalk dust collecting device Download PDFInfo
- Publication number
- CN201329732Y CN201329732Y CNU2008202060717U CN200820206071U CN201329732Y CN 201329732 Y CN201329732 Y CN 201329732Y CN U2008202060717 U CNU2008202060717 U CN U2008202060717U CN 200820206071 U CN200820206071 U CN 200820206071U CN 201329732 Y CN201329732 Y CN 201329732Y
- Authority
- CN
- China
- Prior art keywords
- chalk dust
- blackboard
- osculum
- collecting device
- dust collecting
- 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 title claims abstract description 20
- 230000036541 health Effects 0.000 description 1
- 210000004072 lung Anatomy 0.000 description 1
- 230000004630 mental health Effects 0.000 description 1
Images
Landscapes
- Drawing Aids And Blackboards (AREA)
Abstract
The utility model relates to a blackboard chalk dust collecting device, in particular to a device used for collecting chalk dust from classroom blackboards, wherein a concave groove is arranged on the lower end of a blackboard, one end of the concave groove is provided with a small opening, a wire fence is arranged above the small opening, and a box is arranged under the small opening. The device can collect chalk dust which falls down from the blackboards.
Description
Technical field
The utility model relates to blackboard chalk dust gathering-device, is that the classroom blackboard is collected the chalk dust device specifically.
Background technology
At present, the used educational aid overwhelming majority of teacher remains with traditional chalk and writes on blackboard in the classroom of each middle and primary schools, clean off a blackboard with blackboard eraser again, chalk dust can directly drop underground when erasing the board, when passing by, the people can fly upward chalk dust once more, make academics and students's lung endure the hardship that sucks dust to the fullest extent, year in and year out, will influence student and teacher's physical and mental health.
Summary of the invention
The purpose of this utility model provides a kind of blackboard chalk dust gathering-device, and the chalk dust that it can down drop when erasing the board collects.
Solution of the present utility model is that a Baltimore groove is installed in the blackboard lower end, and an end of Baltimore groove has an osculum, and a wire netting is arranged above the osculum, a box is arranged below the osculum.
Above-described box can be dismantled.
Operation principle of the present utility model is that chalk dust drops in the Baltimore groove the inside, with small brushes chalk dust is swept off to osculum there again, chalk dust drops in box by osculum, and wire netting can reduce the circulation of box the inside air, prevents that chalk dust from flying upward once more.
The utility model has the advantages that the chalk dust that will down drop in the time of will erasing the board collects, reduce chalk dust as far as possible student and teacher's health is worked the mischief.
Description of drawings
Fig. 1 structural representation of the present utility model;
Fig. 2 structural representation of the present utility model.
Embodiment
Shown in Fig. 1,2, the utility model is equipped with a Baltimore groove 2 in blackboard 1 lower end, and an end of Baltimore groove 2 has an osculum 3, and a wire netting 4 is arranged above the osculum 3, a box 5 is arranged below the osculum 3, and box 5 can be dismantled.
Claims (2)
1, blackboard chalk dust gathering-device comprises blackboard, it is characterized in that in the blackboard lower end Baltimore groove being installed, and an end of Baltimore groove has an osculum, and a wire netting is arranged above the osculum, a box is arranged below the osculum.
2, blackboard chalk dust gathering-device according to claim 1 is characterized in that box can dismantle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008202060717U CN201329732Y (en) | 2008-12-25 | 2008-12-25 | Blackboard chalk dust collecting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008202060717U CN201329732Y (en) | 2008-12-25 | 2008-12-25 | Blackboard chalk dust collecting device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201329732Y true CN201329732Y (en) | 2009-10-21 |
Family
ID=41223107
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008202060717U Expired - Fee Related CN201329732Y (en) | 2008-12-25 | 2008-12-25 | Blackboard chalk dust collecting device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201329732Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106394069A (en) * | 2016-08-29 | 2017-02-15 | 彭展忠 | Dustless set |
-
2008
- 2008-12-25 CN CNU2008202060717U patent/CN201329732Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106394069A (en) * | 2016-08-29 | 2017-02-15 | 彭展忠 | Dustless set |
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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: 20091021 Termination date: 20101225 |