CN203221795U - Counter flow type automatic dust collection blackboard eraser - Google Patents
Counter flow type automatic dust collection blackboard eraser Download PDFInfo
- Publication number
- CN203221795U CN203221795U CN 201320128446 CN201320128446U CN203221795U CN 203221795 U CN203221795 U CN 203221795U CN 201320128446 CN201320128446 CN 201320128446 CN 201320128446 U CN201320128446 U CN 201320128446U CN 203221795 U CN203221795 U CN 203221795U
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- CN
- China
- Prior art keywords
- blackboard eraser
- type automatic
- dust
- dust collection
- automatic dust
- 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
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- Drawing Aids And Blackboards (AREA)
Abstract
The utility model discloses a counter flow type automatic dust collection blackboard eraser. Chalk dust can be automatically absorbed by means of air flow while a blackboard is erased, and the chalk dust is prevented from flying outwards as much as possible, so that the pollution of the chalk dust to the classroom environment is reduced, and the damages of the chalk dust to teachers and students are reduced. The interior of the counter flow type automatic dust collection blackboard eraser is provided with an automatic dust collection device which is simple in structure and convenient to use.
Description
Affiliated technical field
The utility model relates to a kind of teaching aid, the especially a kind of blackboard eraser that can follow air to flow automatic dust absorption.
Background technology
At present, blackboard eraser uses palm fiber as the main material of wiping chalk trace.Be installed in palm fiber on the square wood-block or just made blackboard eraser on the plastic casing.The phenomenon that chalk bits fly upward around the blackboard when erasing the board, occurs, classroom environment is caused bigger pollution, teacher and front-seat classmate's health is also had certain harm.
Summary of the invention
The technical problems to be solved in the utility model is a kind of blackboard eraser that can follow air to flow automatic dust absorption of invention, to make things convenient for teacher and classmate to erase the board, the phenomenon of as far as possible avoiding the chalk bits to fly upward to blackboard simultaneously on every side, minimizing pollutes classroom environment, and the health that reduces teacher and front-seat classmate works the mischief.
The technical scheme that its technical problem that solves the utility model adopts is: a dust exhaust apparatus is set in blackboard eraser, and air suction opening and exhaust vent are set.When using blackboard eraser, open dust exhaust apparatus, dust exhaust apparatus is in running order, suck in blackboard eraser by the air that air suction opening will contain chalk dust this moment, filter chalk dust, clean air is discharged from exhaust vent, and the chalk dust in the periodic cleaning convection type automatic dust-absorption eraser gets final product.
The beneficial effects of the utility model are: the convection type automatic dust-absorption eraser, and can avoid chalk dust around blackboard, to fly upward, reduce that classroom environment is polluted, the health that reduces the academics and students works the mischief.Simple in structure, easy to use.
Description of drawings
Below in conjunction with drawings and Examples the utility model is further specified.
Fig. 1 is stereogram of the present utility model.
Fig. 2 is the front view of Fig. 1.
Fig. 3 is the left view of Fig. 1.
Fig. 4 is the vertical view of Fig. 1.
Among Fig. 1,1. blackboard eraser shell, 2. exhaust vent, 3. dust exhaust apparatus, 4. switch, 5. air suction opening, 6. blackboard eraser bristle.
The specific embodiment
In Fig. 1, dust exhaust apparatus (3) is installed on the blackboard eraser shell (1), switch (4) is installed on the dust exhaust apparatus (3), the left and right sides of blackboard eraser shell (1) arranges air suction opening (5), the left and right sides of dust exhaust apparatus (3) arranges exhaust vent (2), and the bottom of blackboard eraser shell (1) arranges blackboard eraser bristle (6).Before erasing the board, earlier switch (4) is opened, dust exhaust apparatus (3) is started working, suck in blackboard eraser by the air that air suction opening (5) will contain chalk dust this moment, filter chalk dust, clean air is discharged from exhaust vent (2), and the chalk dust in the periodic cleaning convection type automatic dust-absorption eraser gets final product.
Claims (1)
1. a convection type automatic dust-absorption eraser is characterized in that: a dust exhaust apparatus is set in blackboard eraser, and air suction opening and exhaust vent are set.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320128446 CN203221795U (en) | 2013-03-20 | 2013-03-20 | Counter flow type automatic dust collection blackboard eraser |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320128446 CN203221795U (en) | 2013-03-20 | 2013-03-20 | Counter flow type automatic dust collection blackboard eraser |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203221795U true CN203221795U (en) | 2013-10-02 |
Family
ID=49248810
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320128446 Expired - Fee Related CN203221795U (en) | 2013-03-20 | 2013-03-20 | Counter flow type automatic dust collection blackboard eraser |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203221795U (en) |
-
2013
- 2013-03-20 CN CN 201320128446 patent/CN203221795U/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: 20131002 Termination date: 20140320 |