CN202378543U - Blackboard capable of absorbing chalk powder - Google Patents
Blackboard capable of absorbing chalk powder Download PDFInfo
- Publication number
- CN202378543U CN202378543U CN201120545004XU CN201120545004U CN202378543U CN 202378543 U CN202378543 U CN 202378543U CN 201120545004X U CN201120545004X U CN 201120545004XU CN 201120545004 U CN201120545004 U CN 201120545004U CN 202378543 U CN202378543 U CN 202378543U
- Authority
- CN
- China
- Prior art keywords
- blackboard
- chalk powder
- electric fan
- wall
- circular passage
- 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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Abstract
The utility model discloses a blackboard capable of absorbing chalk powder, which includes a blackboard body, and is characterized in that the blackboard body is connected with a dust extraction device, wherein the dust extraction device includes an annular passage, an electric blower, a bag-type dust remover and a switch; the annular passage is arranged on a blackboard peripheral frame and sealed with the junction surface of the blackboard peripheral frame; a circle of suction holes are uniformly distributed in an inner side wall of the annular passage; the electric blower is placed outdoors and connected with the annular passage through a hollow pipeline penetrating a wall body; the bag-type dust remover is connected with the electric blower; and the switch is arranged on an inner wall of the wall body and is electrically connected with the electric blower. On the premise of starting the dust extraction device, chalk powder generated during erasing the blackboard can be collected and gathered into the dust extraction device, thereby being prevented from flying all around.
Description
Technical field
The utility model relates to a kind of teaching aid, especially a kind of blackboard that adsorbs chalk powder.
Background technology
In the student classroom, the thick chalk powder of one deck is always accumulated in the normal blackboard below, influences the classroom health; Chalk powder flies upward especially everywhere when erasing the board, and is sucked by human body, has a strong impact on the healthy of teachers and students.
The utility model content
The purpose of the utility model is to provide a kind of blackboard that adsorbs chalk powder, and this blackboard has absorption chalk powder, convenience operation.
The utility model solves the technical scheme that its technical problem adopted: a kind of blackboard that adsorbs chalk powder, comprise the blackboard body, and it is characterized in that described blackboard body is connected with dust exhaust apparatus; Described dust exhaust apparatus comprises circular passage, electric fan, sack cleaner and switch; Said circular passage be located at around the blackboard on the frame and with blackboard around the faying face sealing of frame; Be uniform-distribution with all inlet holes on the madial wall of circular passage; Said electric fan is positioned over outdoor; Hollow pipeline through passing body of wall links to each other with the circular passage, and said sack cleaner links to each other with electric fan, and said switch is located on the body of wall inwall and with electric fan and is electrically connected.
The utlity model has following outstanding beneficial effect: because the blackboard body is connected with dust exhaust apparatus, start dust exhaust apparatus, the chalk powder that produces when erasing the board is just collected and is brought in the dust exhaust apparatus, can prevent that chalk powder from flying upward everywhere.
Description of drawings
Accompanying drawing 1 is the structural representation of the utility model;
Accompanying drawing 2 is generalized sections of the A-A of Fig. 1;
Description of reference numerals: 1 blackboard body, 2 circular passages, 3 electric fans, 4 sack cleaners, 5 switches, 6 inlet holes, 7 hollow pipelines, 8 bodies of wall.
The specific embodiment
Like Fig. 1, shown in 2, a kind of blackboard that adsorbs chalk powder comprises blackboard body 1, is connected with a dust exhaust apparatus on the said blackboard body 1.Dust exhaust apparatus comprises circular passage 2, electric fan 3, sack cleaner 4 and switch 5; Said circular passage 2 be located at around the blackboard on the frame and with blackboard around the faying face sealing of frame; Be uniform-distribution with all inlet holes 6 on the madial wall of circular passage 2; Said electric fan 3 is positioned over outdoor, links to each other with circular passage 2 through the hollow pipeline 7 that passes body of wall 8, to alleviate noise.Sack cleaner 4 links to each other with electric fan 3, can chalk powder be collected, and has both avoided contaminated environment, also can be used as the raw materials for production of chalk.Said switch 5 is located on the body of wall inwall and with electric fan 3 and is electrically connected, and switch 5 is arranged near the blackboard, and is easy to operate.
When erasing the board body 1; Open switch 5; Start electric fan 3, form negative pressuren zone in the circular passage 2, the chalk powder that under gas pressure, flies away is through inlet hole 6 entering circular passages 2; Chalk powder compiles to electric fan 3 directions through hollow pipeline 7 with air pressure in circular passage 2, finally is deposited in the sack cleaner 4.
Claims (1)
1. a blackboard that adsorbs chalk powder comprises the blackboard body, it is characterized in that, described blackboard body is connected with dust exhaust apparatus; Described dust exhaust apparatus comprises circular passage, electric fan, sack cleaner and switch; Said circular passage be located at around the blackboard on the frame and with blackboard around the faying face sealing of frame; Be uniform-distribution with all inlet holes on the madial wall of circular passage; Said electric fan is positioned over outdoor; Hollow pipeline through passing body of wall links to each other with the circular passage, and said sack cleaner links to each other with electric fan, and said switch is located on the body of wall inwall and with electric fan and is electrically connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120545004XU CN202378543U (en) | 2011-12-23 | 2011-12-23 | Blackboard capable of absorbing chalk powder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120545004XU CN202378543U (en) | 2011-12-23 | 2011-12-23 | Blackboard capable of absorbing chalk powder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202378543U true CN202378543U (en) | 2012-08-15 |
Family
ID=46627064
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201120545004XU Expired - Fee Related CN202378543U (en) | 2011-12-23 | 2011-12-23 | Blackboard capable of absorbing chalk powder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202378543U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103465693A (en) * | 2013-04-08 | 2013-12-25 | 河南省佰腾电子科技有限公司 | Dust-free blackboard |
-
2011
- 2011-12-23 CN CN201120545004XU patent/CN202378543U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103465693A (en) * | 2013-04-08 | 2013-12-25 | 河南省佰腾电子科技有限公司 | Dust-free blackboard |
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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: 20120815 Termination date: 20121223 |