CN108481962A - Hand holding type miniature dust suction environment-friendly dust-proof eraser - Google Patents
Hand holding type miniature dust suction environment-friendly dust-proof eraser Download PDFInfo
- Publication number
- CN108481962A CN108481962A CN201810480423.6A CN201810480423A CN108481962A CN 108481962 A CN108481962 A CN 108481962A CN 201810480423 A CN201810480423 A CN 201810480423A CN 108481962 A CN108481962 A CN 108481962A
- Authority
- CN
- China
- Prior art keywords
- dust
- sponge
- plate
- fan
- hand holding
- 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.)
- Granted
Links
- 239000000428 dust Substances 0.000 title claims abstract description 88
- 238000004140 cleaning Methods 0.000 claims abstract description 24
- 238000010521 absorption reaction Methods 0.000 claims abstract description 10
- 238000007664 blowing Methods 0.000 claims abstract description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 29
- 238000009434 installation Methods 0.000 claims description 3
- 239000004020 conductor Substances 0.000 claims description 2
- 239000011810 insulating material Substances 0.000 claims description 2
- 239000000463 material Substances 0.000 claims description 2
- 238000009987 spinning Methods 0.000 claims description 2
- 230000005611 electricity Effects 0.000 claims 1
- 239000007787 solid Substances 0.000 claims 1
- 206010038743 Restlessness Diseases 0.000 abstract description 3
- 230000000694 effects Effects 0.000 description 4
- 230000008901 benefit Effects 0.000 description 3
- 238000012423 maintenance Methods 0.000 description 3
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B43—WRITING OR DRAWING IMPLEMENTS; BUREAU ACCESSORIES
- B43L—ARTICLES FOR WRITING OR DRAWING UPON; WRITING OR DRAWING AIDS; ACCESSORIES FOR WRITING OR DRAWING
- B43L21/00—Blackboard or slate cleaning devices
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B43—WRITING OR DRAWING IMPLEMENTS; BUREAU ACCESSORIES
- B43L—ARTICLES FOR WRITING OR DRAWING UPON; WRITING OR DRAWING AIDS; ACCESSORIES FOR WRITING OR DRAWING
- B43L21/00—Blackboard or slate cleaning devices
- B43L21/02—Blackboard or slate cleaning devices with means for absorbing the chalk dust
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
- Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
- Y02A50/2351—Atmospheric particulate matter [PM], e.g. carbon smoke microparticles, smog, aerosol particles, dust
Landscapes
- Electrostatic Separation (AREA)
- Cleaning Implements For Floors, Carpets, Furniture, Walls, And The Like (AREA)
Abstract
The present invention relates to hand holding type miniature dust suction environment-friendly dust-proof erasers,Technical solution is,It is provided with fan of the blowing direction towards open end on the side wall of the open end face of dust cleaning case,Inside dust cleaning case,Electrostatic attraction plate and sponge dust absorbing structure are disposed between fan and the open end of dust cleaning case,Suction inlet up and down is provided in box baseplate immediately below electrostatic attraction plate,It is evenly equipped with multiple hairbrush arranged in parallel on suction inlet or below suction inlet,Box baseplate lower surface is stretched out in the lower end of hairbrush,Gap between adjacent two hairbrush constitutes dust absorption passage,Dust absorption passage is connected with suction inlet,The present invention is small,It is light-weight,It is easy to operate,It is on-demand,With dust suction cleaning function,Solves the winged phenomenon of unrest during wiping dust now using the mode of electrostatic and fan combination,Dust is absorbed using sponge (dampness),Reduce cost,Improve reliability and feasibility.
Description
Technical field
The present invention relates to teaching aid blackboard eraser, especially a kind of hand holding type miniature dust suction environment-friendly dust-proof eraser.
Background technology
Existing often all very huge to dust absorbnig chalk eraser, underaction is not appropriate for teacher and is used in teaching,
And installation is also more complicated, maintenance cost is high.Small has that pick-up performance is undesirable again, and stores dust
Amount is few, and use is comparatively laborious, and product cost is high, complicated, poor performance, technique are cumbersome, in use and installation maintenance
On have inconvenience.It cannot be all acceptable to the market in mounting, commissioning and maintenance cost, dust absorbnig chalk eraser cannot be made good
Development is universal.Therefore, it is imperative to improve and innovate.
Invention content
For the above situation, to overcome the defect of the prior art, the purpose of the present invention to be just to provide a kind of hand holding type miniature
Dust suction environment-friendly dust-proof eraser can effectively solve the problems, such as blackboard eraser dust suction.
The technical solution that the present invention solves is：
A kind of hand holding type miniature dust suction environment-friendly dust-proof eraser, which is characterized in that the blackboard eraser includes dust cleaning case, dust cleaning case be by
The cuboid hollow structure for the one end open that babinet and the cover board on babinet are constituted, the side with the open end face of dust cleaning case
It is provided with fan of the blowing direction towards open end on wall, inside dust cleaning case, between fan and the open end of dust cleaning case successively
It is provided with electrostatic attraction plate and sponge dust absorbing structure, dust suction up and down is provided in the box baseplate immediately below electrostatic attraction plate
Mouthful, multiple hairbrush arranged in parallel are evenly equipped on suction inlet or below suction inlet, the lower end of hairbrush is stretched out under box baseplate
Surface, the gap between adjacent two hairbrush constitutes dust absorption passage, and dust absorption passage is connected with suction inlet.
The sponge dust absorbing structure includes vertical supporting plate, the upper and lower part at vertical supporting plate center set up separately be equipped with to
Before the middle support column that protrudes horizontally up, the upper and lower part of vertical supporting plate both sides sets up the collateral support for being equipped with forward horizontal stretching separately
The first sponge plate and the second sponge plate are respectively arranged between the collateral dagger of column, middle support column and both sides, the first sponge plate has
In parallel uniformly distributed multiple, the blowing direction of parallel direction and fan is in non-parallel setting, the second sponge plate and the first sponge
Plate quantity is equal and corresponds, and the two is symmetrical set, and the gap between adjacent two first sponge plates constitutes the first air duct, phase
Gap between adjacent two second sponge plates constitutes the second air duct, and the first air duct corresponds and is connected with the second air duct, constitutes
Dust absorbing air passage, air intake and the electrostatic attraction plate face of dust absorbing air passage, the open end face of outlet air end and dust cleaning case.
It is provided with water filling fin on the cover board, is provided with and leads in the box roof in water filling fin or below water filling fin
Circulation road is provided with the water filling port being connected with flow-guiding channel on water filling fin, and flow-guiding channel lower part is provided with and dedusting box cavity phase
Multiple apopores of connection, apopore are respectively positioned on the surface of the first sponge plate or the second sponge plate, constitute the first sponge plate and
The water structure of second sponge plate.
Structure of the invention novel and unique, advantages of simple is small, light-weight, volume, weight with it is usually common common
Blackboard eraser is without too big difference, and easy to operate, on-demand, user can use this product as wiping traditional blackboard, and
And dust suction cleaning function is carried, the unrest solved during wiping dust now using the mode of electrostatic and fan combination is flown now
As absorbing dust using sponge (dampness), reducing cost, improve reliability and feasibility, can preferably protect
The health of user, easy to use, effect is good, there is good social and economic benefit.
Description of the drawings
Fig. 1 is present invention assembly stereoscopic schematic diagram.
Fig. 2-4 is the stereogram of different angle of the present invention.
Fig. 5 is front view of the present invention.
Fig. 6 is left view of the present invention.
Fig. 7 is vertical view of the present invention.
Fig. 8 is the stereogram of the dust-proof box body of the present invention.
Fig. 9 is the stereogram of cover board of the present invention.
Figure 10 is the front view of cover board of the present invention.
Figure 11 is the sectional view along A-A of Figure 10 of the present invention.
Figure 12-13 is 2 stereograms of sponge dust absorbing structure different angle of the present invention.
Figure 14 is the vertical view of sponge dust absorbing structure of the present invention.
Figure 15 is the stereogram of electrostatic attraction plate of the present invention.
Figure 16 is the side view of electrostatic attraction plate of the present invention.
Specific implementation mode
The specific implementation mode of the present invention is described in further detail below in conjunction with attached drawing.
It is provided by Fig. 1-16, a kind of hand holding type miniature dust suction environment-friendly dust-proof eraser, which includes dust cleaning case, and dust cleaning case is
The cuboid hollow structure for the one end open that cover board 2 by babinet 7 and on babinet is constituted, just with the open end 74 of dust cleaning case
To side wall on be provided with fan 3 of the blowing direction towards open end 74, inside dust cleaning case, in the opening of fan 3 and dust cleaning case
It is disposed with electrostatic attraction plate 9 and sponge dust absorbing structure 8 between end 74, is opened on 7 bottom plate of babinet immediately below electrostatic attraction plate 9
There is a suction inlet 71 up and down, on suction inlet 71 or 71 lower section of suction inlet is evenly equipped with multiple hairbrush 4 arranged in parallel, hair
Box baseplate lower surface is stretched out in the lower end of brush 4, and the gap between adjacent two hairbrush constitutes dust absorption passage 4a, dust absorption passage 4a with
Suction inlet 71 is connected.The suction inlet 71 and the lower end of electrostatic attraction plate 9 are in alternate setting, that is, there is certain gap.
To ensure that using effect, the hairbrush 4 are fixed in hairbrush fixed frame 5, hairbrush fixed frame 5 passes through the first connection
Bolt 10 is in the tank floor of 71 lower section of suction inlet.
The sponge dust absorbing structure 8 includes vertical supporting plate 81, and the upper and lower part at 81 center of vertical supporting plate is set up separately
It is equipped with the middle support column 83 of forward horizontal stretching, the upper and lower part of 81 both sides of vertical supporting plate, which is set up separately, is equipped with forward horizontal stretching
Collateral dagger 84, be respectively arranged between middle support column 83 and the collateral dagger 84 of both sides the first sponge plate 85a and second sea
Continuous plate 85b, the first sponge plate 85a have in parallel uniformly distributed multiple, and the blowing direction of parallel direction and fan 3 is set in non-parallel
It sets, the second sponge plate 85b is equal with the first sponge plate 85a quantity and corresponds, and the two is symmetrical set, adjacent two first seas
Gap between continuous plate 85a constitutes the first air duct, gap the second air duct of composition between adjacent two second sponge plate 85b, and first
Air duct corresponds and is connected with the second air duct, constitutes dust absorbing air passage 86, the air intake 86a of dust absorbing air passage 86 and electrostatic attraction
74 face of open end of 9 face of plate, outlet air end 86b and dust cleaning case.
The described one end of middle support column 83 far from vertical supporting plate 81 is provided with locating piece 82, is provided with and determines in babinet 7
Position 82 corresponding locating slot 72 of block, locating piece 82 are installed in locating slot 72, are constituted between sponge dust absorbing structure and babinet
Mounting connection structure；Water filling fin 6 is provided on the cover board, in the box roof in water filling fin 6 or below water filling fin
It is provided with flow-guiding channel 62, the water filling port 61 being connected with flow-guiding channel 62 is provided on water filling fin 6,62 lower part of flow-guiding channel is opened
There are the multiple apopores 63 being connected with dedusting box cavity, apopore 63 to be respectively positioned on the first sponge plate 85a or the second sponge plate 85b
Surface, constitute the first sponge plate and the second sponge plate water structure, the first sponge plate and the second sponge plate are made after water filling
In dampness, to increase its active adsorption capacity to dust.The water filling port 61 is located in water filling fin 6
The aperture of the heart, apopore 63 is incremented by from center to both sides, this make flow when having just enter into water filling port will not all with
Nearest water filling port all flows out, and more hydropexis are inside flow-guiding channel, and hold-up is more and more, finally reach from
The farthest water filling port in center, flow to lower section sponge plate on.And the flow-guiding channel bottom surface between two adjacent apopore of both sides be in by
From inside to outside, it is obliquely installed from high to low, and each gradient is in gradually increase outward by center, flow is being led under the effect of gravity
The farthest water filling port of distance center is more flowed in circulation road, increases the flow of the water of farthest water filling port so that flow is final
The sponge plate being located at uniformly across water filling port flow direction below deflector hole.
Fan mounting holes 73 corresponding with fan 3 are provided on 7 side wall of the babinet, fan 3 is installed on fan peace
It fills in hole 73, the battery settling groove 76 for installing battery is provided in dust cleaning case, battery settling groove 76 is built-in to be useful for fan
The battery of power supply.
The electrostatic attraction plate 9 includes top plate 91 made of insulating materials and is distributed on the more of 91 lower surface of top plate vertically
A attracting board 92 arranged in parallel, attracting board 92 are made of conductor material, and attracting board 92 is located at the surface of suction inlet 71,
There is certain interval between attracting board metal material, arrangement staggeredly keeps the area of generation electrostatic and attraction sufficiently large, can be with
The dust that inside raises is attracted to attracting board to greatest extent, so that dust is concentrated between attracting board, dust is made to be easier quilt
Fan is blown into sponge dust absorbing structure, and the power supply of electrostatic attraction plate comes from internal battery power supply.
It is provided with the first connecting hole 21 on the cover board 2, is provided on babinet 7 and the first connecting hole 21 corresponding second
Connecting hole 75, cover board 2 fix dress by the second connection bolt 1 of the spinning in the first connecting hole 21 and corresponding second connecting hole 75
On babinet top, reassembling type connection structure is constituted, it is easy to assemble, it dismantles mouth and conveniently sponge plate is replaced or cleaned, or replace
Battery etc..
The service condition of the present invention is, in blackboard wiping, hairbrush wipes chalk dust first, while dust is passed through
Gap between hairbrush is electrostatically attracted the inside that plate is drawn into suction box, meanwhile, the chalk being between electrostatic attraction plate
Powder can be acted on again by the wind-force of arrival fan, and to be led to sponge dust absorbing structure, sponge dust absorbing structure uses relatively thin sea
Continuous plate (piece) is made, and can carry out active absorption, and sponge dust suction knot to dust under dampness to sponge plate water filling
, that is, there is certain angle, so that dust wind and sponge plate in the sponge plate of structure and the non-parallel setting of the blowing direction of fan
Contact area become larger, to maximum possible absorption dust, compared with prior art, structure of the invention novel and unique, simply
Rationally, small, light-weight, volume, weight are easy to operate with the no too big difference of usually common ordinary blackboard eraser, with
With with taking, user can use this product as wiping traditional blackboard, and carry dust suction cleaning function, use electrostatic and wind
The mode that fan combines solves the winged phenomenon of unrest during wiping dust now, absorbs dust, drop using sponge (dampness)
Low cost, improves reliability and feasibility, can preferably protect the health of user, and easy to use, effect is good,
There is good social and economic benefit.
Claims (8)
1. a kind of hand holding type miniature dust suction environment-friendly dust-proof eraser, which is characterized in that the blackboard eraser includes dust cleaning case, and dust cleaning case is by case
The cuboid hollow structure for the one end open that body (7) and the cover board (2) on babinet are constituted, the open end (74) with dust cleaning case
Fan (3) of the blowing direction towards open end (74) is provided on the side wall of face, inside dust cleaning case, in fan (3) and dedusting
Be disposed with electrostatic attraction plate (9) and sponge dust absorbing structure (8) between the open end (74) of case, electrostatic attraction plate (9) just under
It is provided with suction inlet (71) up and down on babinet (7) bottom plate of side, is evenly equipped on suction inlet (71) or below suction inlet (71)
Box baseplate lower surface is stretched out in the lower end of multiple hairbrush (4) arranged in parallel, hairbrush (4), between adjacent two hairbrush
Gap constitutes dust absorption passage (4a), and dust absorption passage (4a) is connected with suction inlet (71).
2. hand holding type miniature dust suction environment-friendly dust-proof eraser according to claim 1, which is characterized in that the hairbrush (4) is solid
It is scheduled in hairbrush fixed frame (5), babinet of the hairbrush fixed frame (5) by the first connection bolt (10) below suction inlet (71)
On bottom surface.
3. hand holding type miniature dust suction environment-friendly dust-proof eraser according to claim 1, which is characterized in that the sponge dust suction knot
Structure (8) includes vertical supporting plate (81), and the upper and lower part at vertical supporting plate (81) center, which is set up separately, is equipped with forward horizontal stretching
Middle support column (83), the upper and lower part of vertical supporting plate (81) both sides set up the collateral dagger for being equipped with forward horizontal stretching separately
(84), the first sponge plate (85a) and the second sponge are respectively arranged between middle support column (83) and the collateral dagger (84) of both sides
Plate (85b), the first sponge plate (85a) have in parallel uniformly distributed multiple, and the blowing direction of parallel direction and fan (3) is in non-flat
Row setting, the second sponge plate (85b) is equal with the first sponge plate (85a) quantity and corresponds, and the two is symmetrical set, adjacent
Gap between two first sponge plates (85a) constitutes the first air duct, and the gap between adjacent two second sponge plates (85b) constitutes the
Two air ducts, the first air duct correspond and are connected with the second air duct, constitute dust absorbing air passage (86), the air inlet of dust absorbing air passage (86)
Hold (86a) and electrostatic attraction plate (9) face, open end (74) face of outlet air end (86b) and dust cleaning case.
4. hand holding type miniature dust suction environment-friendly dust-proof eraser according to claim 3, which is characterized in that the middle support column (83)
One end far from vertical supporting plate (81) is provided with locating piece (82), is provided in babinet (7) corresponding with locating piece (82)
Locating slot (72), locating piece (82) are installed in locating slot (72), and the installation constituted between sponge dust absorbing structure and babinet connects
Structure.
5. hand holding type miniature dust suction environment-friendly dust-proof eraser according to claim 3, which is characterized in that be provided on the cover board
Water filling fin (6) is provided with flow-guiding channel (62) in the box roof in water filling fin (6) or below water filling fin, and water filling is convex
The water filling port (61) being connected with flow-guiding channel (62) is provided on rib (6), flow-guiding channel (62) lower part is provided with and dedusting box cavity
The multiple apopores (63) being connected, apopore (63) be respectively positioned on the first sponge plate (85a) or the second sponge plate (85b) just on
Side constitutes the water structure of the first sponge plate and the second sponge plate.
6. hand holding type miniature dust suction environment-friendly dust-proof eraser according to claim 1, which is characterized in that babinet (7) side wall
On be provided with fan mounting holes (73) corresponding with fan (3), fan (3) is installed in fan mounting holes (73), dedusting
The battery settling groove (76) for installing battery, the built-in electricity for being useful for fan power supply of battery settling groove (76) are provided in case
Pond.
7. hand holding type miniature dust suction environment-friendly dust-proof eraser according to claim 1, which is characterized in that the electrostatic attraction plate
(9) include top plate made of insulating materials (91) and the vertical multiple suctions arranged in parallel for being distributed on top plate (91) lower surface
Corbel back slab (92), attracting board (92) are made of conductor material, and attracting board (92) is located at the surface of suction inlet (71).
8. hand holding type miniature dust suction environment-friendly dust-proof eraser according to claim 1, which is characterized in that set on the cover board (2)
It is equipped with the first connecting hole (21), the second connecting hole (75) corresponding with the first connecting hole (21), cover board are provided on babinet (7)
(2) the second connection bolt (1) by spinning in the first connecting hole (21) and corresponding second connecting hole (75) is installed on case
Body top constitutes reassembling type connection structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810480423.6A CN108481962B (en) | 2018-05-18 | 2018-05-18 | Hand-held miniature dust-absorbing environment-friendly blackboard eraser |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810480423.6A CN108481962B (en) | 2018-05-18 | 2018-05-18 | Hand-held miniature dust-absorbing environment-friendly blackboard eraser |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108481962A true CN108481962A (en) | 2018-09-04 |
| CN108481962B CN108481962B (en) | 2023-06-16 |
Family
ID=63352881
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810480423.6A Active CN108481962B (en) | 2018-05-18 | 2018-05-18 | Hand-held miniature dust-absorbing environment-friendly blackboard eraser |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108481962B (en) |
Citations (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4204298A (en) * | 1977-11-18 | 1980-05-27 | Hiroyuki Handa | Compact vacuum cleaner |
| US5099541A (en) * | 1991-01-14 | 1992-03-31 | Tressler Doyle M | Blackboard eraser apparatus |
| US20030037404A1 (en) * | 2001-08-23 | 2003-02-27 | Wu Tung Ming | Electronic blackboard eraser |
| CN2902754Y (en) * | 2006-03-07 | 2007-05-23 | 张坚 | Electric dust collecting blackboard eraser |
| CN101850685A (en) * | 2009-04-02 | 2010-10-06 | 张新文 | Dust absorption blackboard eraser |
| CN102267322A (en) * | 2011-07-19 | 2011-12-07 | 沈阳大学 | Blackboard eraser device for removing chalk dust in electrostatic adsorption mode |
| CN102909195A (en) * | 2011-08-03 | 2013-02-06 | 陈思思 | Efficient static raise-dust-free dust cleaning device of blackboard eraser |
| CN203157519U (en) * | 2013-01-10 | 2013-08-28 | 中国石油大学(华东) | Electrostatic-precipitation blackboard eraser |
| CN203681076U (en) * | 2014-01-22 | 2014-07-02 | 杨怀奎 | Electrostatic dust collection blackboard |
| CN204701348U (en) * | 2015-06-23 | 2015-10-14 | 哈尔滨师范大学 | A kind of black board eraser with chalk-dust collector |
| CN105270057A (en) * | 2015-11-19 | 2016-01-27 | 华蓥市双河第二小学 | Electrostatic dust sucking blackboard eraser capable of spraying water |
| CN205022249U (en) * | 2015-08-25 | 2016-02-10 | 杨家顺 | Blackboard eraser of washing one's hands |
| CN105835577A (en) * | 2016-06-21 | 2016-08-10 | 南京工业职业技术学院 | Environment-friendly backboard eraser |
| CN105856928A (en) * | 2016-06-03 | 2016-08-17 | 河北工业大学 | Zero-energy-consumption wet type dust collection board eraser |
| CN208558798U (en) * | 2018-05-18 | 2019-03-01 | 河南工程学院 | A kind of hand holding type miniature dust suction environment-friendly dust-proof eraser |
-
2018
- 2018-05-18 CN CN201810480423.6A patent/CN108481962B/en active Active
Patent Citations (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4204298A (en) * | 1977-11-18 | 1980-05-27 | Hiroyuki Handa | Compact vacuum cleaner |
| US5099541A (en) * | 1991-01-14 | 1992-03-31 | Tressler Doyle M | Blackboard eraser apparatus |
| US20030037404A1 (en) * | 2001-08-23 | 2003-02-27 | Wu Tung Ming | Electronic blackboard eraser |
| CN2902754Y (en) * | 2006-03-07 | 2007-05-23 | 张坚 | Electric dust collecting blackboard eraser |
| CN101850685A (en) * | 2009-04-02 | 2010-10-06 | 张新文 | Dust absorption blackboard eraser |
| CN102267322A (en) * | 2011-07-19 | 2011-12-07 | 沈阳大学 | Blackboard eraser device for removing chalk dust in electrostatic adsorption mode |
| CN102909195A (en) * | 2011-08-03 | 2013-02-06 | 陈思思 | Efficient static raise-dust-free dust cleaning device of blackboard eraser |
| CN203157519U (en) * | 2013-01-10 | 2013-08-28 | 中国石油大学(华东) | Electrostatic-precipitation blackboard eraser |
| CN203681076U (en) * | 2014-01-22 | 2014-07-02 | 杨怀奎 | Electrostatic dust collection blackboard |
| CN204701348U (en) * | 2015-06-23 | 2015-10-14 | 哈尔滨师范大学 | A kind of black board eraser with chalk-dust collector |
| CN205022249U (en) * | 2015-08-25 | 2016-02-10 | 杨家顺 | Blackboard eraser of washing one's hands |
| CN105270057A (en) * | 2015-11-19 | 2016-01-27 | 华蓥市双河第二小学 | Electrostatic dust sucking blackboard eraser capable of spraying water |
| CN105856928A (en) * | 2016-06-03 | 2016-08-17 | 河北工业大学 | Zero-energy-consumption wet type dust collection board eraser |
| CN105835577A (en) * | 2016-06-21 | 2016-08-10 | 南京工业职业技术学院 | Environment-friendly backboard eraser |
| CN208558798U (en) * | 2018-05-18 | 2019-03-01 | 河南工程学院 | A kind of hand holding type miniature dust suction environment-friendly dust-proof eraser |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108481962B (en) | 2023-06-16 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN204063389U (en) | A kind of modular multi-function air-conditioning | |
| JP3159566U (en) | Indirect vaporization cooling system | |
| CN208558798U (en) | A kind of hand holding type miniature dust suction environment-friendly dust-proof eraser | |
| CN104534604B (en) | The board-like dew point indirect evaporative cooler of adverse current and channel partition of external flow dividing structure | |
| CN207688248U (en) | A kind of humidifying air-conditioner with cleaning function | |
| CN108481962A (en) | Hand holding type miniature dust suction environment-friendly dust-proof eraser | |
| CN205561085U (en) | Air purifying device | |
| CN107471835A (en) | A kind of baker of ink-jet printer | |
| CN207081153U (en) | A kind of easy cleaning humidifier | |
| CN204757802U (en) | Cooling tower is with hanging tilting fin | |
| CN203687217U (en) | Novel air purifier | |
| CN214949509U (en) | Air outlet structure for vertical evaporation humidifier | |
| CN205112786U (en) | Multifunctional blackboard eraser | |
| CN205372881U (en) | Evaporation type air cooler | |
| CN205664518U (en) | Intelligent humidifier | |
| CN208069275U (en) | A kind of new mobile type traditional Chinese Painting board of education | |
| CN210292177U (en) | Suction-injection type humidifier | |
| CN203501349U (en) | Environment-friendly air conditioner | |
| CN203375597U (en) | Direct evaporation refrigeration air conditioner unit with tall padding special for subway | |
| CN205980119U (en) | Service water air -cooler | |
| CN207081094U (en) | Air treatment module and air conditioner | |
| CN111928341A (en) | Air moisturizing cover for indoor air-conditioning hanging machine | |
| CN221306782U (en) | Upper attached air supply device suitable for closed cat cage and cat cage | |
| CN206055901U (en) | For the air-inlet grille and air-conditioner of air-conditioner | |
| CN203859183U (en) | Curing device for pole plate of storage battery and air supply mechanism for curing device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Application publication date: 20180904 Assignee: Henan Xiangzi Information Technology Co.,Ltd. Assignor: HENAN INSTITUTE OF ENGINEERING Contract record no.: X2023980052962 Denomination of invention: Handheld miniature vacuum cleaner and environmentally friendly blackboard eraser Granted publication date: 20230616 License type: Common License Record date: 20231222 |
|
| EE01 | Entry into force of recordation of patent licensing contract |