CN2072484U - Dust-removing blackboard eraser - Google Patents
Dust-removing blackboard eraser Download PDFInfo
- Publication number
- CN2072484U CN2072484U CN 90204259 CN90204259U CN2072484U CN 2072484 U CN2072484 U CN 2072484U CN 90204259 CN90204259 CN 90204259 CN 90204259 U CN90204259 U CN 90204259U CN 2072484 U CN2072484 U CN 2072484U
- Authority
- CN
- China
- Prior art keywords
- dust
- brush
- negative pressure
- dust remover
- pressure device
- 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.)
- Withdrawn
Links
- 239000000428 dust Substances 0.000 claims abstract description 31
- 238000009792 diffusion process Methods 0.000 abstract description 4
- 230000000694 effects Effects 0.000 abstract description 2
- 238000010521 absorption reaction Methods 0.000 abstract 1
- 230000002401 inhibitory effect Effects 0.000 abstract 1
- 238000001914 filtration Methods 0.000 description 2
- 241001633942 Dais Species 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
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- Cleaning In General (AREA)
Abstract
The utility model provides a blackboard brush that can eliminate chalk dust.
The blackboard brush is characterized by being formed by combining a carpet brush and a dust remover connected with a negative pressure device, and dust is absorbed and conveyed into the dust remover through a dust absorption hole to be filtered under the action of negative pressure, so that the good effects of inhibiting flying and diffusion of dust, improving teaching working environment and fundamentally eliminating harm of dust to the mind and body of a teaching worker are achieved.
Description
The design relates to a kind of blackboard brush that can in use eliminate chalk dust harm.
Own blackboard rises, and chalk dust just becomes a harm greatly of the long-term teaching person's body and mind before the dais of standing, although the improvement to chalk is passed through in people's attempt, in the hope of reducing dust, " dust hazard " fundamentally do not obtain regulation.
According to above-mentioned condition, the utility model aims to provide a kind of blackboard brush that can suppress chalk dust, improvement teaching job environment effectively, reaches with this and fundamentally eliminates the harm of chalk dust to teaching person's body and mind.
The utility model is to realize like this; Main body by blanket brush and a dust remover that links to each other with negative pressure device in conjunction with forming.There is the air suction opening of respective numbers at the edge of blanket brush, these air suction openings all communicate with dust remover, when blanket brush on blackboard during operation, naturally produce dust, because the effect of negative pressure, dust is sent into the dirt device filtration treatment that disappears not as good as promptly being absorbed by air suction opening when spreading, thereby has suppressed the diffusion of flying upward of chalk dust effectively.
Concrete structure of the present utility model is illustrated by following embodiment and accompanying drawing thereof.
Accompanying drawing the 1,2,3,4, the 5th is according to the structure chart of the dust removing blackboard brush that the utility model proposes.
Below in conjunction with details and the working condition of accompanying drawing detailed description according to the concrete device that the utility model proposes.
Main body of the present utility model is made up of with dust remover (a 2) combination that is connected with negative pressure device (3) blanket brush (1).There is the air suction opening (6) of respective numbers at the edge of blanket brush (1), and these air suction openings (6) all communicate with dust remover (2).
When blanket brush (1) produces dust during operation naturally on blackboard, because suction function, dust is when too late diffusion, promptly absorbed and send into dust remover (2) by air suction opening (6), carry out filtration treatment (shown in arrow (5)) through filter core (4), thereby realize to suppress the dust from flying diffusion, eliminate " dust hazard ", improve the purpose of teaching environment.
Claims (3)
1, can eliminate the blackboard brush of dust effectively, this brush is brushed [1] by a blanket and is constituted with a dust remover [2] that is connected with negative pressure device [3].
2, according to the described blackboard brush of claim 1, it is characterized in that there is the air suction opening (6) of respective numbers at blanket brush (1) edge, these air suction openings (6) all communicate with dust remover (2) and negative pressure device (3).
3,, it is characterized in that dust remover (2) directly links to each other with negative pressure device (3), has a filter core that can arbitrarily draw off (4) in the dust remover (2) according to the described blackboard brush of claim 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 90204259 CN2072484U (en) | 1990-04-03 | 1990-04-03 | Dust-removing blackboard eraser |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 90204259 CN2072484U (en) | 1990-04-03 | 1990-04-03 | Dust-removing blackboard eraser |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2072484U true CN2072484U (en) | 1991-03-06 |
Family
ID=4885281
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 90204259 Withdrawn CN2072484U (en) | 1990-04-03 | 1990-04-03 | Dust-removing blackboard eraser |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2072484U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103963521A (en) * | 2014-01-01 | 2014-08-06 | 梅有智 | Dust suction device for dust-suction blackboard eraser |
-
1990
- 1990-04-03 CN CN 90204259 patent/CN2072484U/en not_active Withdrawn
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103963521A (en) * | 2014-01-01 | 2014-08-06 | 梅有智 | Dust suction device for dust-suction blackboard eraser |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |