CN203391535U - Blackboard for preventing dust from flying - Google Patents
Blackboard for preventing dust from flying Download PDFInfo
- Publication number
- CN203391535U CN203391535U CN201320425865.3U CN201320425865U CN203391535U CN 203391535 U CN203391535 U CN 203391535U CN 201320425865 U CN201320425865 U CN 201320425865U CN 203391535 U CN203391535 U CN 203391535U
- Authority
- CN
- China
- Prior art keywords
- dust
- blackboard
- gathering arrester
- flying
- blackboard body
- 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
Abstract
The utility model discloses a blackboard for preventing dust from flying. The blackboard comprises a blackboard body; a flared dust hood is arranged at the rear part of the blackboard body; the dust hood is connected with a dust removal cavity; a dust removal opening is formed at the lower part of the dust removal cavity; a sealing end cover is movably installed at the dust removal opening; the blackboard body is provided with a dust collecting through hole which is communicated with the dust hood; the radius of the dust collecting through hole becomes larger along the direction of the dust hood; an exhaust fan is arranged between the dust hood and the dust removal cavity; the exhaust fan is connected with a control switch which is installed at the side part of the blackboard body. The blackboard can be used for absorbing chalk dust produced when a teacher writes on the blackboard or cleans the blackboard, and prevents chalk dust from floating in the air, the environment is protected, the environment is clean, teachers and students are prevented from sucking chalk dust into lungs to cause diseases, and the health of teachers and students can be protected.
Description
Technical field
The utility model relates to a kind of teaching aid, relates in particular to a kind of blackboard that prevents dust from flying.
Background technology
At present, in teaching process, use blackboard and chalk as educational aid, in write with chalk word or the process that erases the board, be attended by the dust of chalk, dust from flying swims in air, severe contamination environment, by academics and students, be drawn in lung, easily diseases induced, harm academics and students's is healthy.
Utility model content
Technical problem to be solved in the utility model is to provide a kind of dust that can be adsorbed on the chalk producing when writing or erasing the board on blackboard; avoid dust to swim in air; both can protection of the environment; make clean environment clean; also avoid academics and students that dust is sucked in lung diseases induced, the healthy blackboard that prevents dust from flying of protection academics and students.
For solving the problems of the technologies described above, the technical solution of the utility model is: the blackboard that prevents dust from flying, comprise blackboard body, the rear portion of described blackboard body is provided with and is trumpet-shaped dust gathering arrester, described dust gathering arrester is connected with dedusting chamber, bottom, described dedusting chamber is provided with dedusting mouth, described dedusting mouth is movably installed with end cover, described blackboard body is provided with the dust suction through hole being communicated with described dust gathering arrester, described dust suction through hole is along increasing to described dust gathering arrester direction radius, between described dust gathering arrester and described dedusting chamber, be provided with exhaust blower, described exhaust blower is connected with the gauge tap that is arranged on described blackboard body sidepiece.
As preferred technical scheme, the downside of described blackboard body portion is provided with the groove that gathers dust, described in the bottom portion of groove that gathers dust be provided with the described dust suction through hole being communicated with described dust gathering arrester.
As the improvement to technique scheme, described dust gathering arrester is provided with protruding in the anti-reverse hemisphere film of described exhaust blower, and described anti-reverse hemisphere film is provided with cross type cut.
As the further improvement to technique scheme, described gauge tap is provided with senior middle school's low speed third gear position of controlling described exhaust blower rotating speed.
Owing to having adopted technique scheme, prevent the blackboard of dust from flying, comprise blackboard body, the rear portion of described blackboard body is provided with and is trumpet-shaped dust gathering arrester, described dust gathering arrester is connected with dedusting chamber, bottom, described dedusting chamber is provided with dedusting mouth, described dedusting mouth is movably installed with end cover, described blackboard body is provided with the dust suction through hole being communicated with described dust gathering arrester, described dust suction through hole is along increasing to described dust gathering arrester direction radius, between described dust gathering arrester and described dedusting chamber, be provided with exhaust blower, described exhaust blower is connected with the gauge tap that is arranged on described blackboard body sidepiece.While producing dust when writing on blackboard with chalk or erasing the board, open described gauge tap, described exhaust blower rotates, make generation negative pressure in described dust gathering arrester, from described dust suction through hole, to described dust gathering arrester, produce air flow, the opening that described dust suction through hole is positioned on described blackboard body is tiny, avoid affecting the use of blackboard, described dust suction through hole is along being horn-like to described dust gathering arrester direction radius increase and described dust gathering arrester, more easily produce air blast, thereby by blackboard surface and near dust from dust gathering arrester described in the inspiration of described dust suction through hole, enter into again described dedusting chamber, avoid dust to swim in air, protection of the environment, academics and students is healthy in protection.Use after a period of time, open described end cover, inspiration the dust that overstocks the chalk in described dedusting chamber are taken out from described dedusting mouth.The dust of the chalk producing when the utility model can be adsorbed on and write or erase the board on blackboard; avoid dust to swim in air, both can protection of the environment, make clean environment clean; also avoid academics and students that dust is sucked in lung diseases induced, academics and students is healthy in protection.
Accompanying drawing explanation
The following drawings is only intended to the utility model to schematically illustrate and explain, does not limit scope of the present utility model.Wherein:
Fig. 1 is the structural representation of the utility model embodiment;
Fig. 2 is the cutaway view of the utility model embodiment.
In figure: 1-blackboard body; 2-dust gathering arrester; 3-dedusting chamber; 4-dedusting mouth; 5-end cover; 6-dust suction through hole; 7-exhaust blower; 8-gauge tap; The 9-groove that gathers dust; The anti-reverse hemisphere film of 10-.
The specific embodiment
Below in conjunction with drawings and Examples, further set forth the utility model.In the following detailed description, only by the mode of explanation, some one exemplary embodiment of the present utility model has been described.Undoubtedly, those of ordinary skill in the art can recognize, in the situation that not departing from spirit and scope of the present utility model, can to described embodiment, revise by various mode.Therefore, accompanying drawing is illustrative with being described in essence, rather than for limiting the protection domain of claim.
As depicted in figs. 1 and 2, prevent the blackboard of dust from flying, comprise blackboard body 1, the rear portion of described blackboard body 1 is provided with and is trumpet-shaped dust gathering arrester 2, described dust gathering arrester 2 is connected with dedusting chamber 3, 3 bottoms, described dedusting chamber are provided with dedusting mouth 4, described dedusting mouth 4 is movably installed with end cover 5, described blackboard body 1 is provided with the dust suction through hole 6 being communicated with described dust gathering arrester 2, described dust suction through hole 6 is along increasing to described dust gathering arrester 2 direction radiuses, between described dust gathering arrester 2 and described dedusting chamber 3, be provided with exhaust blower 7, described exhaust blower 7 is connected with the gauge tap 8 that is arranged on described blackboard body 1 sidepiece.While producing dust when writing on blackboard with chalk or erasing the board, open described gauge tap 8, described exhaust blower 7 rotates, make the interior generation negative pressure of described dust gathering arrester 2, from described dust suction through hole 6, to described dust gathering arrester 2, produce air flow, the opening that described dust suction through hole 6 is positioned on described blackboard body 1 is tiny, avoid affecting the use of blackboard, described dust suction through hole 6 is along being horn-like to described dust gathering arrester 2 direction radiuses increases and described dust gathering arrester 2, more easily produce air blast, thereby by blackboard surface and near dust from dust gathering arrester 2 described in described dust suction through hole 6 inspirations, enter into again described dedusting chamber 3, avoid dust to swim in air, protection of the environment, academics and students is healthy in protection.Use after a period of time, open described end cover 5, inspiration the dust that overstocks the chalk in described dedusting chamber 3 are taken out from described dedusting mouth 4.The dust of the chalk producing when the present embodiment can be adsorbed on and write or erase the board on blackboard; avoid dust to swim in air, both can protection of the environment, make clean environment clean; also avoid academics and students that dust is sucked in lung diseases induced, academics and students is healthy in protection.
The downside of described blackboard body 1 front portion is provided with the groove 9 that gathers dust, described in groove 9 bottoms of gathering dust be provided with the described dust suction through hole 6 being communicated with described dust gathering arrester 2.Can effectively prevent that dust from dropping to the ground, in dust gathering arrester 2 described in dust inspiration, then be sucked into described dedusting chamber 3.
Described dust gathering arrester 2 is provided with protruding in the anti-reverse hemisphere film 10 of described exhaust blower 7, and described anti-reverse hemisphere film 10 is provided with cross type cut.Effectively prevent that the dust adverse current in described dust gathering arrester 2 from going out from described dust suction through hole 6, guarantee the one-way flow of dust, described anti-reverse hemisphere film 10 is simple in structure, easy to use.
Described gauge tap 8 is provided with senior middle school's low speed third gear position of controlling described exhaust blower 7 rotating speeds.Can control as required described exhaust blower 7 rotating speeds, when the dust that produces when writing is less, described gauge tap 8 is placed in to low gear; When dust increases, described gauge tap 8 is placed in to middling speed gear; When the dust that produces when erasing the board is more, described gauge tap 8 is placed in to high gear, controls easy to usely, pick-up performance is good.
More than show and described basic principle of the present utility model, principal character and advantage of the present utility model.The technical staff of the industry should understand; the utility model is not restricted to the described embodiments; that in above-described embodiment and description, describes just illustrates principle of the present utility model; do not departing under the prerequisite of the utility model spirit and scope; the utility model also has various changes and modifications, and these changes and improvements all fall within the scope of claimed the utility model.The claimed scope of the utility model is defined by appending claims and equivalent thereof.
Claims (4)
1. prevent the blackboard of dust from flying, comprise blackboard body, it is characterized in that: the rear portion of described blackboard body is provided with and is trumpet-shaped dust gathering arrester, described dust gathering arrester is connected with dedusting chamber, bottom, described dedusting chamber is provided with dedusting mouth, described dedusting mouth is movably installed with end cover, described blackboard body is provided with the dust suction through hole being communicated with described dust gathering arrester, described dust suction through hole is along increasing to described dust gathering arrester direction radius, between described dust gathering arrester and described dedusting chamber, be provided with exhaust blower, described exhaust blower is connected with the gauge tap that is arranged on described blackboard body sidepiece.
2. the blackboard that prevents dust from flying as claimed in claim 1, is characterized in that: the downside of described blackboard body portion is provided with the groove that gathers dust, described in the bottom portion of groove that gathers dust be provided with the described dust suction through hole being communicated with described dust gathering arrester.
3. the blackboard that prevents dust from flying as claimed in claim 1, is characterized in that: described dust gathering arrester is provided with protruding in the anti-reverse hemisphere film of described exhaust blower, and described anti-reverse hemisphere film is provided with cross type cut.
4. the blackboard that prevents dust from flying as described in claim 1,2 or 3, is characterized in that: described gauge tap is provided with senior middle school's low speed third gear position of controlling described exhaust blower rotating speed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320425865.3U CN203391535U (en) | 2013-07-10 | 2013-07-10 | Blackboard for preventing dust from flying |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320425865.3U CN203391535U (en) | 2013-07-10 | 2013-07-10 | Blackboard for preventing dust from flying |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203391535U true CN203391535U (en) | 2014-01-15 |
Family
ID=49903088
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320425865.3U Expired - Fee Related CN203391535U (en) | 2013-07-10 | 2013-07-10 | Blackboard for preventing dust from flying |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203391535U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109080347A (en) * | 2018-08-31 | 2018-12-25 | 安徽众高信息技术有限责任公司 | A kind of automatic dust-absorption eraser |
| WO2019229279A1 (en) * | 2018-06-01 | 2019-12-05 | Universidad De Valladolid | System for improving air quality around a blackboard via localised extraction of contaminated air |
-
2013
- 2013-07-10 CN CN201320425865.3U patent/CN203391535U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2019229279A1 (en) * | 2018-06-01 | 2019-12-05 | Universidad De Valladolid | System for improving air quality around a blackboard via localised extraction of contaminated air |
| CN109080347A (en) * | 2018-08-31 | 2018-12-25 | 安徽众高信息技术有限责任公司 | A kind of automatic dust-absorption eraser |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140115 Termination date: 20140710 |
|
| EXPY | Termination of patent right or utility model |