CN202439465U - Dust-free blackboard brush - Google Patents
Dust-free blackboard brush Download PDFInfo
- Publication number
- CN202439465U CN202439465U CN2012200255276U CN201220025527U CN202439465U CN 202439465 U CN202439465 U CN 202439465U CN 2012200255276 U CN2012200255276 U CN 2012200255276U CN 201220025527 U CN201220025527 U CN 201220025527U CN 202439465 U CN202439465 U CN 202439465U
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- China
- Prior art keywords
- dust
- inclined clapboard
- storehouse
- air
- brush
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- 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 dust-free blackboard brush, which is characterized in that an outer cover for preventing dust from flying outwards is arranged at a front end of a box body which surrounds a blackboard brush body; dust-absorption holes in the brush body is inclined downwards and is beneficial to sinking and gathering dust; an inclined chocked flow partition board is arranged in a dust gathering bin so that air current flows for a long distance circuitously and sink more possibly; a dust-absorption fan is arranged behind a filtering screen and a filtering fine screen to keep the dust-absorption fan clean; the filtering screen is arranged above a flowing direction of the dust air current, the dust sinks and is not attached to the filtering screen under the action of gravity of the dust, and exhaustion holes are formed above the blackboard brush, so that the puzzle and pollution to users can be avoided, the dust-absorption effect of the dust-free blackboard brush can be guaranteed, the environment pollution is avoided, the dust-free classroom environment is realized, and the health of teachers and students can be effectively protected.
Description
[technical field]
The utility model relates to a kind of blackboard brush, especially relates to a kind of electric dust absorption blackboard brush.
[background technology]
The classroom instruction that China is present; Except that multi-media classroom, what use in a large number is that writing implement mainly is chalk and blackboard, because blackboard is less; Can not on blackboard, write the required abundant word of giving a lesson, therefore every class need repeatedly be wiped unwanted letter written with chalk usually.Blackboard brush is a kind of teaching appurtenance, is used to wipe the letter written with chalk on the blackboard, and blackboard brush in the market generally is made up of plastics or iron shell parcel monoblock bristle, in order to wipe the letter written with chalk on the blackboard, blackboard is returned to write preceding state.This blackboard brush is when erasing the board, and chalk dust just descends slowly and lightly in air with the mobile of brush, the situation that often causes chalk dust to fly everywhere; Polluted environment, teacher is by the chalk dust severe contamination, can be called to eat chalk dust and live; When chalk dust is too many even will pollute on one's body the front-seat classmate; And chalk dust can get into respiratory tract along with breathing, and it is healthy to have a strong impact on teachers and students, causes various breathing problems and related disease thereof.
Existing many designs have been done improvement to this shortcoming of blackboard brush, introduce the electric dust absorption device, improved the dustproof effect of blackboard brush, but the dustproof effect of these electric dust absorption blackboard brush are still not ideal.The air suction opening of some designs is horizontally disposed, is unfavorable for that dust sinks to collecting; Some designs do not have outer cover, are difficult to prevent that dust from outwards flying upward; The Ji Fencang of some designs is not provided with restricted baffle or restricted baffle and is provided with unreasonablely, and the dust in the air-flow is difficult to sink; The screen pack of some designs is located at after the dust absorption fan, and dust absorption fan has piled with dust; The screen pack of some designs is arranged on the below or the horizontal direction of dust air current flow direction; Screen pack is stopped up by dust easily; Can't filter, or topped dust on screen pack compressed into screen pack by air-flow easily by force, cause dust to discharge and produce secondary pollution from air exit; Many designs design below blackboard brush air intlet or air exit or the rear portion usually, and these gas ports cause many puzzlements and pollution in the face of the blackboard brush user to the user.
[utility model content]
The purpose of the utility model is to overcome the existing above-mentioned deficiency of electric dust absorption blackboard brush, and a kind of dustless eraser is provided.
The utility model provides a kind of dustless eraser; Form by bristle, brush body, air suction opening, box body, Ji Fencang, restricted baffle, screen pack, dust absorption fan and blast pipe etc.; The front end that it is characterized in that the blackboard brush box body around brush body is provided with the outer cover that elastomeric material is processed, and is only more lower slightly than the bristle top; Air suction opening in the brush body is downward-sloping; Ji Fencang is divided into air-inlet cavity, heavy powder chamber and filter chamber three parts, and restricted baffle wherein is the inclined clapboard that is obliquely installed, and is tiltedly gone out in the storehouse by collection top, powder storehouse, upper corner; Be provided with screen pack between top, collection rear portion, powder storehouse and the dust absorption fan and filter fine-structure mesh, be provided with the secondary filter chamber between two nets; The dust absorption fan chamber is connected by blast pipe with the steam vent that is arranged on the box body top.
The dustless eraser that the utility model provides; It is characterized in that on inclined clapboard one in dustless eraser collection powder storehouse is before the collection powder storehouse tiltedly going out below the angle is in the storehouse, with inclined clapboard two common air-inlet cavities, the heavy powder chambeies of separating, inclined clapboard four go up behind the Ji Fencang below in the storehouse, angle tiltedly go out, and inclined clapboard three jointly separation sink powder chamber, filter chambers; Be provided with narrower space between inclined clapboard one, the inclined clapboard three; Be provided with narrower space between inclined clapboard three, the inclined clapboard four; A plurality of choked flow inclined clapboards that inclination is set in the collection powder storehouse make air-flow form that long distance is circuitous to flow, and multimachine can be able to sink by self gravitation thereby make dust have more.
The dustless eraser that the utility model provides, the slope angle that it is characterized in that the inclined clapboard in dustless eraser collection powder storehouse is all greater than 10 degree.Preferred version is that the slope angle of inclined clapboard is all spent greater than 20, and dust can be sunk by self gravitation.
The dustless eraser that the utility model provides is characterized in that the downward-sloping slope angle of air suction opening in the dustless eraser brush body is all spent greater than 30.Preferred version is that the downward-sloping slope angle of air suction opening is all greater than 45 degree.
The dustless formula blackboard brush of the utility model is divided into three parts: upper front portion is brush dust district (comprising bristle, brush body, air suction opening, dust-absorbing groove, outer cover etc.); Upper rear portion is dust suction power-section (comprises dust absorption fan chamber, dust absorption fan, secondary filter chamber, filters fine-structure mesh, blast pipe, exhaust outlet, battery case, charger etc.), and the lower part is Ji Fencang (comprising air-inlet cavity, heavy powder chamber, filter chamber, restricted baffle, screen pack etc.).
Behind energized, the startup dust absorption fan; The glide path of air and dust is: air sucks from the brush dust system and forms the carried away by air movement dust; Get into Ji Fencang through air suction opening, dust-absorbing groove; Air behind the sedimentation dust rises and gets into the dust absorption fan chamber in the dust suction dynamical system, and discharges from the steam vent of box body top through blast pipe.
Go up front end at blackboard brush box body (1) and be provided with bristle (2); Be used to brush the letter written with chalk on the blackboard, bristle is fastened on the brush body (3), is provided with dust-absorbing groove (4), air suction opening (5) around the brush body and in the brush body; Air suction opening in the brush body is downward-sloping, so that dust relies on gravity to sink automatically.The front end of the blackboard brush box body around the brush body is provided with the outer cover (6) that elastomeric material is processed; Only more lower slightly than the bristle top; Bristles bend can decrease when blackboard brush was firmly brushed; This moment, the outer cover height was close with the bristle heights of roofs, the dust of blackboard brush under when erasing the board, brushing can not be leaked fly out and at the dust-absorbing groove that all enters under the effect of dust-absorbing strength between brush body and the box body outer cover.Dust in the dust-absorbing groove is quick sinking dust-absorbing groove bottom under the double action of gravity and dust suction, gets into Ji Fencang through the powder door (15) that advances between dust-absorbing groove bottom and the Ji Fencang (10), and this Ji Fencang is provided with the choked flow inclined clapboard.Ji Fencang is divided into air-inlet cavity (16), heavy powder chamber (17) and filter chamber (18) three parts; Restricted baffle wherein is the inclined clapboard that is obliquely installed; And below collection top, powder storehouse, upper corner are in the storehouse, tiltedly go out; Wherein inclined clapboard one (11) is gone up below in the storehouse, angle before the collection powder storehouse and is tiltedly gone out, separates air-inlet cavity, heavy powder chamber with inclined clapboard two (12), inclined clapboard four (14) behind the Ji Fencang upward the angle tiltedly go out in the storehouse, sink powder chamber, filter chamber with inclined clapboard three (13) separations.The dust air-flow gets into Ji Fencang; The part heavier dust directly sink down into inclined clapboard one, then slide the collection bottom, powder storehouse; The dust that part is lighter sinks to clashing into inclined clapboard with air-flow and rebounds in the lump towards past inclined clapboard three; The back dust air-flow that is obstructed will down make a circulation to cross inclined clapboard three, flow to collection upper back, powder storehouse, and the dust air-flow is hampered by inclined clapboard four again in uphill process; The space that is forced through four of inclined clapboards three, inclined clapboard flows to filter chamber toward the front upper place, and the dust air-flow continues rising in filter chamber; The dust air-flow is in the moving process of the baffling of Ji Fencang, because choked flow factor and the effect of dust deadweight gravity, most of dust all is deposited to collection bottom, powder storehouse one by one.Be provided with screen pack (20) between top, collection rear portion, powder storehouse and the dust absorption fan and filter fine-structure mesh (21); Between two nets is secondary filter chamber (22), and the top that screen pack is arranged on dust air current flow direction does not then stick on the screen pack because of the weight of dust self makes it to drown oneself; When the air-flow that contains low amounts of dust rises to screen pack; Dust is filtered net to be stopped and loses behind the rising power from being deposited to collection bottom, powder storehouse; The air-flow that possibly contain minute quantity micro mist dirt then penetrates screen pack and gets into the secondary filter chamber; After running into filtration fine-structure mesh and blocked, the rising of micro mist dirt drowns oneself; Air then continues to rise to penetrate and filters fine-structure mesh and get into dust absorption fan chamber (23), and the dust absorption fan chamber is connected by blast pipe (27) with the steam vent (28) that is arranged on the box body top, and dust absorption fan (24) is by charger (26) or be installed in the interior battery of battery case (25) electric power is provided; Dust absorption fan blows into blast pipe with these except that the cleaned air behind the dust and discharges from the steam vent of box body top, directly blows to the user of blackboard brush with the air of avoiding discharging.Collection powder storehouse rear side is provided with a powder exit (19), can pour out the dust in the collection powder storehouse smoothly, can seal at ordinary times, opens when needing.
The dustless formula blackboard brush of the utility model; The box body front end is provided with outer cover and prevents that dust from outwards flying upward around brush body; The downward-sloping setting of air suction opening in the brush body is beneficial to dust and sinks to collecting; The choked flow inclined clapboard that inclination is set in the collection powder storehouse form the long distance of air-flow circuitous flow make dust have more multimachine can be able to, lets dust absorption fan keep clean after dust absorption fan is arranged on screen pack and filters fine-structure mesh, the top that screen pack is arranged on dust air current flow direction does not then stick on the screen pack because of the weight of dust self makes it to drown oneself; Vent design is avoided causing puzzlement and pollution to the user above blackboard brush; Thereby ensure the pick-up performance of this dustless formula blackboard brush, avoid environmental pollution, realize no dust classroom environment, protect effectively that teachers and students' is healthy.
[description of drawings]
Fig. 1 is the dustless eraser generalized section.Wherein: box body (1); Bristle (2); Brush body (3); Dust-absorbing groove (4); Air suction opening (5); Outer cover (6); Ji Fencang (10); Inclined clapboard one (11); Inclined clapboard two (12); Inclined clapboard three (13); Inclined clapboard four (14); Powder inlet (15); Air-inlet cavity (16); Heavy powder chamber (17); Filter chamber (18); Powder exit (19); Screen pack (20); Filter fine-structure mesh (21); Secondary filter chamber (22); Dust absorption fan chamber (23); Dust absorption fan (24); Battery case (25); Charger (26); Blast pipe (27); Steam vent (28)
[specific embodiment]
Embodiment 1
Go up front end at blackboard brush box body (1) and be provided with bristle (2); Be used to brush the letter written with chalk on the blackboard, bristle is fastened on the brush body (3), is provided with dust-absorbing groove (4), air suction opening (5) around the brush body and in the brush body; Air suction opening in the brush body is downward-sloping 60 degree, so that dust relies on gravity to sink automatically.The front end of the blackboard brush box body around the brush body is provided with the outer cover (6) that elastomeric material is processed; Only than low 5 millimeters of bristle top; Bristles bend reduced by 5 millimeters approximately when blackboard brush was firmly brushed; This moment, the outer cover height was close with the bristle heights of roofs, thereby the dust of blackboard brush under when erasing the board, brushing was not leaked fly out and at the dust-absorbing groove that all enters under the effect of dust-absorbing strength between brush body and the box body outer cover.Dust in the dust-absorbing groove is quick sinking dust-absorbing groove bottom under the double action of gravity and dust suction, gets into Ji Fencang through the powder inlet (15) between dust-absorbing groove bottom and the Ji Fencang (10), and this Ji Fencang is provided with the choked flow inclined clapboard.Ji Fencang is divided into air-inlet cavity (16), heavy powder chamber (17) and filter chamber (18) three parts; Restricted baffle wherein is the inclined clapboard that is obliquely installed; And in the storehouse, tiltedly go out by collection top, powder storehouse, upper corner; Wherein inclined clapboard one (11) is gone up below in the storehouse, angle before the collection powder storehouse and is tiltedly gone out 30 degree, separates air-inlet cavity, heavy powder chamber with inclined clapboard two (12), and inclined clapboard four (14) is gone up the angle behind the Ji Fencang and tiltedly gone out below in the storehouse 30 to spend, sinks powder chamber, filter chamber with inclined clapboard three (13) separations.The dust air-flow gets into Ji Fencang; The part heavier dust directly sink down into inclined clapboard one, then slide the collection bottom, powder storehouse; The dust that part is lighter sinks to clashing into inclined clapboard with air-flow and rebounds in the lump towards past inclined clapboard three; The back dust air-flow that is obstructed will down make a circulation to cross inclined clapboard three, flow to collection upper back, powder storehouse, and the dust air-flow is hampered by inclined clapboard four again in uphill process; The space that is forced through four of inclined clapboards three, inclined clapboard flows to filter chamber toward the front upper place, and the dust air-flow continues rising in filter chamber; The dust air-flow is in the moving process of the baffling of Ji Fencang, because choked flow factor and the effect of dust deadweight gravity, most of dust all is deposited to collection bottom, powder storehouse one by one.Being provided with screen pack (20) between top, collection rear portion, powder storehouse and the dust absorption fan and filtering fine-structure mesh (21), is secondary filter chamber (22) between two nets; When the air-flow that contains low amounts of dust rises to screen pack; Dust is filtered net to be stopped and loses behind the rising power from being deposited to collection bottom, powder storehouse; The air-flow that possibly contain minute quantity micro mist dirt then penetrates screen pack and gets into the secondary filter chamber; After running into filtration fine-structure mesh and blocked, the rising of micro mist dirt drowns oneself; Air then continues to rise to penetrate and filters fine-structure mesh entering dust absorption fan chamber (23), and the dust absorption fan chamber is connected by blast pipe (27) with the steam vent (28) that is arranged on the box body top, and dust absorption fan (24) provides electric power by battery (25) or charger (26); Dust absorption fan blows into blast pipe with these except that the cleaned air behind the dust and discharges from the steam vent of box body top, directly blows to the user of blackboard brush with the air of avoiding discharging.Collection powder storehouse rear side is provided with a powder exit (19), can pour out the dust in the collection powder storehouse smoothly, can seal at ordinary times, opens when needing.
Claims (3)
1. dustless eraser; Form by bristle, brush body, air suction opening, box body, Ji Fencang, restricted baffle, screen pack, dust absorption fan and blast pipe etc.; The front end that it is characterized in that the blackboard brush box body around brush body is provided with the outer cover that elastomeric material is processed, and is only more lower slightly than the bristle top; Air suction opening in the brush body is downward-sloping; Ji Fencang is divided into air-inlet cavity, heavy powder chamber and filter chamber three parts, and restricted baffle wherein is the inclined clapboard that is obliquely installed, and is tiltedly gone out by collection top, powder storehouse, upper corner below in the storehouse; Be provided with screen pack between top, collection rear portion, powder storehouse and the dust absorption fan and filter fine-structure mesh, be provided with the secondary filter chamber between two nets; The dust absorption fan chamber is connected by blast pipe with the steam vent that is arranged on the box body top.
2. dustless eraser according to claim 1; It is characterized in that on inclined clapboard one in dustless eraser collection powder storehouse is before the collection powder storehouse tiltedly going out below the angle is in the storehouse, with inclined clapboard two common air-inlet cavities, the heavy powder chambeies of separating, inclined clapboard four go up behind the Ji Fencang below in the storehouse, angle tiltedly go out, and inclined clapboard three jointly separation sink powder chamber, filter chambers; Be provided with narrower space between inclined clapboard one, the inclined clapboard three; Be provided with narrower space between inclined clapboard three, the inclined clapboard four.
3. dustless eraser according to claim 1, the slope angle that it is characterized in that the inclined clapboard in dustless eraser collection powder storehouse is all greater than 10 degree; The downward-sloping slope angle of air suction opening in the dustless eraser brush body is all spent greater than 30.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200255276U CN202439465U (en) | 2012-01-19 | 2012-01-19 | Dust-free blackboard brush |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200255276U CN202439465U (en) | 2012-01-19 | 2012-01-19 | Dust-free blackboard brush |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202439465U true CN202439465U (en) | 2012-09-19 |
Family
ID=46820919
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012200255276U Expired - Fee Related CN202439465U (en) | 2012-01-19 | 2012-01-19 | Dust-free blackboard brush |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202439465U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104275972A (en) * | 2014-09-30 | 2015-01-14 | 丁玉清 | Dust-free blackboard eraser |
-
2012
- 2012-01-19 CN CN2012200255276U patent/CN202439465U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104275972A (en) * | 2014-09-30 | 2015-01-14 | 丁玉清 | Dust-free blackboard 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: 20120919 Termination date: 20150119 |
|
| EXPY | Termination of patent right or utility model |