CN110103617A - A kind of electrostatic dedusting blackboard eraser that can be recovered energy - Google Patents
A kind of electrostatic dedusting blackboard eraser that can be recovered energy Download PDFInfo
- Publication number
- CN110103617A CN110103617A CN201910307344.XA CN201910307344A CN110103617A CN 110103617 A CN110103617 A CN 110103617A CN 201910307344 A CN201910307344 A CN 201910307344A CN 110103617 A CN110103617 A CN 110103617A
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- Prior art keywords
- electrostatic
- energy
- electrode layer
- board
- blackboard eraser
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Classifications
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- 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
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/32—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries for charging batteries from a charging set comprising a non-electric prime mover rotating at constant speed
Abstract
The present invention relates to blackboard erasers, refer in particular to a kind of electrostatic dedusting blackboard eraser that can be realized energy regenerating.According to electrostatic precipitation principle, the Electrostatic Absorption dust generated using friction, then dust is drawn to by ash collecting box by air extractor, realize the dust effectively absorbed on blackboard from source, utilize the composite principle of frictional electricity, electrostatic induction and piezoelectric effect, frictional force and hand when being erased the board by collecting is to the pressure of blackboard eraser, electric energy is translated into via the mixing nano generator in power generator, it is energy storage device charging by additional rectification circuit, and then electric energy is provided for air extractor, realize the recycling to mechanical energy.
Description
Technical field
The present invention relates to blackboard erasers, refer in particular to a kind of electrostatic dedusting blackboard eraser that can be realized energy regenerating.
Background technique
Blackboard eraser is a kind of educational aid of indispensability, and conventional blackboard eraser is small to the suction-operated of dust, so that blackboard eraser
It wipes unclean, is also easy to cause dust from flying in Classroom air, influences the health of teachers and students；Application No. is 201820584616.1
A kind of electrostatic precipitation of the high-voltage electrostatic field generated based on collecting polar plate and the energization of corona electrode plate disclosed in Chinese patent application
Blackboard eraser, the blackboard eraser need dry cell to provide electric energy for it；Application No. is 201320858988.7 Chinese patent application public affairs
A kind of electrostatic blackboard eraser is opened, which will be drawn onto ash collecting box by air extractor using the dust of Electrostatic Absorption, be utilized
Dry cell provides electric energy for air extractor；These blackboard erasers require timely to replace battery, and the service life of battery is very
It is short, it influences using while causing the great wasting of resources；It is well known that the dust of chalk dust classroom diffusion can to teacher and
The health of student damages, and the service life of dry cell is short, and a large amount of uses can generate waste, refuse battery processing to resource
It is improper that very big harm can be also generated to environment.And the electrostatic friction generator based on triboelectric effect and electrostatic induction principle
A large amount of research achievement is achieved in the case where numerous scientific team such as Wang Zhonglin team are continually striving to, the utilization of the small energy in life
Concern with collection by more and more researchers.
Summary of the invention
The present invention is that one kind can be generated according to electrostatic precipitation principle using friction with self-powered electrostatic dedusting blackboard eraser
Electrostatic Absorption dust, dust is then drawn to by ash collecting box by air extractor, realization is effectively absorbed on blackboard from source
Dust, frictional force and hand using the composite principle of frictional electricity, electrostatic induction and piezoelectric effect, when being erased the board by collecting
Portion is translated into electric energy via the mixing nano generator in power generator, passes through additional rectified current to the pressure of blackboard eraser
Road is energy storage device charging, and then provides electric energy for air extractor, realizes the recycling to mechanical energy.
The electrostatic dedusting blackboard eraser that one kind provided by the invention can recover energy, which is characterized in that the electrostatic precipitation
Blackboard eraser includes shell, wiping board, ash collecting box, air extractor, electrostatic friction piece, flexible connector, acrylic board, switch, power generation
Device, energy storage device, rectification circuit.Wherein ash collecting box is set in shell, is fixedly connected with the casing by track, on ash collecting box
With aspirating hole；Air extractor is set to outside shell, and positioned at the right side of ash collecting box, and air extractor is connected with aspirating hole.Power generation
Device inside housings, positioned at the top of ash collecting box, is made of mixing nano generator；Energy storage device is located on air extractor
Side, and be electrical connected with power generator and air extractor, there is rechargeable lithium battery in energy storage device；Electrostatic friction piece is set to
Outside the bottom of shell, and there is venthole on electrostatic friction piece, so that wiping board part is connected to ash collecting box；Flexible connector connection
Wiping board and electrostatic friction piece.
According to the result of study of electrostatic precipitation instantly, dust concentration is in 7.07g/N m3In the case where, when electrostatic potential reaches
When to 3KV, the efficiency of dust collection of electrostatic can achieve 90%, by testing, electrostatic that fricting movement under the above conditions generates
Voltage can reach 5KV, therefore can play significant dust removing effects.
The air extractor is made of aspiration pump, is provided electric energy by energy storage device for it and is worked, passes through pumping
The dust that electrostatic friction piece adsorbs is drawn to ash collecting box by hole.
The power generator is made of mixing nano generator, which includes that a friction electricity power generation is single
Member and a piezo-electric generating unit.The friction electricity generator unit and piezo-electric generating unit passes through external current-regulating circuit and energy storage
Device is connected.Wherein the electric generator unit of the friction further comprises first electrode layer, be located above first electrode layer and and its
The frictional layer being arranged face-to-face and the second electrode lay above frictional layer lead between the first electrode layer and frictional layer
Flexible connector is crossed to be connected；Rub electric generator unit and piezo-electric generating unit one piece of acrylic board of centre placement, the piezoelectricity hair
Electric unit includes the third electrode layer being placed on acrylic board, piezoelectric nanowire of the vertical-growth above the third electrode layer
Array, the first high polymer insulating layer above piezoelectric nano linear array and is located at first high molecular polymer
The 4th electrode layer above insulating layer；Wherein, the first electrode layer and the second electrode lay are that the friction electricity power generation is single
The output electrode of member, the third electrode layer and the 4th electrode layer are the output electrodes of the piezo-electric generating unit.
Preferably, the wiping board part uses the material positioned at frictional series table end to make, such as PTFE, PDMS material
Deng；The electrostatic friction body portion uses the material positioned at frictional series heading end to make, such as PA material, presents nowadays market again
On blackboard be color coated steel sheet plate face, in the action process that erase the board, wiping board part and blackboard face contact simultaneously rub, quiet
Electric friction piece is contacted and is rubbed with wiping board part, thus generates a large amount of electrostatic charge, and dust can be effectively adsorbed from source.
Preferably, the conductive metal material that four electrode layers select bound electron ability weaker, such as Cu, Al or its alloy
The stronger non-metal insulating material of bound electron ability, such as PTFE, PVDF are selected Deng, frictional layer, frictional layer and electrode layer
Thickness is 50 μm of -1 ㎜.
Preferably, the electric generator unit of friction and piezo-electric generating unit are respectively arranged at the two sides of acrylic board, and contact surface
Product is equal, and piezoelectric nano linear array selects ZnO material.
Mixing nano generator in the present invention is in the case where carrying out the reciprocating motion effect of blackboard-cleaning, piezoelectric nano linear array
Constantly bending restores to produce electricl energy, and first electrode layer and frictional layer constantly separate and produce electricl energy, and realizes and turns mechanical energy
It is changed to electric energy.It exports and is stored in energy storage device by rectification circuit finally, the electric energy that nano generator generates will be mixed, it is real
Now to the charging of energy storage device.
There is rechargeable lithium battery in the energy storage device, on the one hand its electric energy that can receive power generator generation is itself
Charging, on the other hand can provide electric energy for air extractor.
Proposed by the present invention is a kind of electrostatic dedusting blackboard eraser that can be recovered energy, and not only realizes and adsorbs from source
Dust avoids the case where dust from flying, while electric energy can be also provided for itself, and production cost is low, and practical value is high, effectively
Protect teaching environment, reduce energy consumption, economize on resources, comprehensive benefit is significant.
Detailed description of the invention
Fig. 1 is the electrostatic dedusting blackboard eraser structural schematic diagram that can be recovered energy of the invention；
Fig. 2 is the partial enlarged view that nano generator is mixed in power generator of the invention；
Fig. 3 is rectification circuit schematic diagram of the invention.
In figure: 1, shell 2, wiping board 3, ash collecting box 4, air extractor, 5 electrostatic friction pieces 6, flexible connector 7, hair
Electric installation 8, energy storage device 9, switch 10, acrylic board 11, first electrode layer 12, frictional layer 13, the second electrode lay
14, third electrode layer 15, piezoelectric nano linear array 16, the first high molecular polymer 17, the 4th electrode layer 501, venthole
701, rub electric generator unit 702, piezo-electric generating unit
Specific embodiment
As shown in Figure 1, a kind of self-powered electrostatic dedusting blackboard eraser, including shell 1, wiping board 2, ash collecting box 3, air extractor
4, electrostatic friction piece 5, flexible connector 6, power generator 7, energy storage device 8, switch 9, acrylic board 10 and external rectified current
Road.
During erasing the board, flexible connector 6 is shunk by the pressure from hand, and the reciprocal movement that erases the board makes
Wiping board 2 is obtained while being rubbed with blackboard surface, wiping board 2 also contacts with each other with electrostatic friction piece 5 and fricting movement occurs.Base
In the Electrostatic Absorption that the dust on triboelectrification and electrostatic precipitation principle, blackboard surface is generated by friction, taken out via venthole 501
Device of air 4 is drawn onto ash collecting box 3, achievees the effect that adsorb dedusting.Further, to prevent dust from the side of elastic connection 6
It flies upward, telescopic sponge can be increased in the side wall of elastic connection 6 and be stopped.
During erasing the board, the reciprocal movement that erases the board is so that the mixing nano generator in power generator 7 works, in fact
Now electric energy is converted by mechanical energy to be recycled.Firstly, blackboard eraser is come from when reciprocal the erasing the board of progress acts
The pressure of hand restores the constantly bending of the piezoelectric nano linear array 15 in piezo-electric generating unit 702, in third electrode layer 14
Potential difference is formed between the 4th electrode layer 17, according to piezoelectric effect, piezoelectric nano generator unit is produced electricl energy.Furthermore it blacks
The reciprocating action of plate to rub first electrode layer 11 in electric generator unit 701 and frictional layer 12 is constantly separate, and
One electrode layer selects the metal materials such as electronegativity lower Cu, Al, had not only served as frictional layer has but also served as electrode layer, first electrode layer and
Since material electronegativity great disparity generates the gain and loss of electronics and then forms potential difference between frictional layer, according to frictional electricity and electrostatic sense
Principle is answered, friction nanometer generating unit produces electricl energy.Then, via external current-regulating circuit, the electric energy that power generator 7 is generated is stored up
It is stored in energy storage device 8, provides electric energy for air extractor 4, realize that converting electric energy for mechanical energy recycles.
In conclusion the electrostatic dedusting blackboard eraser that can be recovered energy, the friction based on wiping board 2 Yu electrostatic friction piece 5
The Electrostatic Absorption dust of generation adsorbs dust using the realization of electrostatic precipitation principle from source, tests the dedusting function of blackboard eraser；
Based on the mixing nano generator of piezoelectric effect, frictional electricity and the composite principle of electrostatic induction production, filled for energy storage device 8
Electricity, and then electric energy is provided for air extractor 4, realize that converting electric energy for mechanical energy recycles.The blackboard eraser, which solves, to be wiped
When blackboard the problem of dust from flying, effective dedusting is realized, built good teaching environment, while realizing and converting mechanical energy to
Electric energy recycles, and has saved the energy, has protected environment, has there is very big practical value.
Claims (9)
1. the electrostatic dedusting blackboard eraser that one kind can recover energy, which is characterized in that the electrostatic dedusting blackboard eraser include shell,
It is wiping board, ash collecting box, air extractor, electrostatic friction piece, flexible connector, acrylic board, switch, power generator, energy storage device, whole
Current circuit；Wherein ash collecting box is set in shell, is fixedly connected with the casing by track, has aspirating hole on ash collecting box；Pumping
Device is set to outside shell, and positioned at the right side of ash collecting box, and air extractor is connected with aspirating hole；Power generator inside housings,
Positioned at the top of ash collecting box, it is made of mixing nano generator；Energy storage device is located above air extractor, and and power generator
It is electrical connected with air extractor, there is rechargeable lithium battery in energy storage device；Electrostatic friction piece is set to outside the bottom of shell, and quiet
There is venthole, so that wiping board part is connected to ash collecting box on electric friction piece；Flexible connector connects wiping board and electrostatic friction piece.
2. the electrostatic dedusting blackboard eraser that one kind as described in claim 1 can recover energy, which is characterized in that the pumping dress
It sets and is made of aspiration pump, provide electric energy by energy storage device for it and work, adsorbed electrostatic friction piece by aspirating hole
Dust be drawn to ash collecting box.
3. the electrostatic dedusting blackboard eraser that one kind as described in claim 1 can recover energy, which is characterized in that the power generation dress
It sets and is made of mixing nano generator, which includes the electric generator unit of a friction and a piezo-electric generating list
Member；The friction electricity generator unit is connected by external current-regulating circuit with energy storage device with piezo-electric generating unit；It is wherein described
The electric generator unit that rubs includes first electrode layer, the frictional layer being arranged face-to-face above first electrode layer and with it and position
The second electrode lay above frictional layer is connected between the first electrode layer and frictional layer by flexible connector；Friction electricity
One piece of acrylic board is placed among generator unit and piezo-electric generating unit, the piezo-electric generating unit includes being placed on acrylic board
Third electrode layer, piezoelectric nano linear array of the vertical-growth above the third electrode layer, be located at piezoelectric nano linear array
First high polymer insulating layer of top and the 4th electrode layer above first high polymer insulating layer；
Wherein, the first electrode layer and the second electrode lay are the output electrode of the electric generator unit that rubs, the third electricity
Pole layer and the 4th electrode layer are the output electrodes of the piezo-electric generating unit.
4. the electrostatic dedusting blackboard eraser that one kind as described in claim 1 can recover energy, which is characterized in that the wiping board portion
Divide and is made using the material for being located at frictional series table end；The electrostatic friction body portion is used positioned at frictional series heading end
Material production；In the action process that erase the board, wiping board part and blackboard face contact simultaneously rub, electrostatic friction piece and wiping board portion
Tap is touched and is rubbed, and thus generates a large amount of electrostatic charge, dust can be effectively adsorbed from source.
5. the electrostatic dedusting blackboard eraser that one kind as described in claim 1 can recover energy, which is characterized in that four electrode layers
The conductive metal material for selecting bound electron ability weaker, is Cu, Al or its alloy, and frictional layer selects bound electron ability stronger
Non-metal insulating material, be PTFE or PVDF, the thickness of frictional layer and electrode layer is 50 μm of -1mm.
6. the electrostatic dedusting blackboard eraser that one kind as described in claim 1 can recover energy, which is characterized in that friction electricity power generation
Unit and piezo-electric generating unit are respectively arranged at the two sides of acrylic board, and contact area is equal, and piezoelectric nano linear array is selected
ZnO material.
7. the electrostatic dedusting blackboard eraser that one kind as described in claim 1 can recover energy, which is characterized in that prevent dust
It is flown upward from the side of elastic connection, telescopic sponge can be increased in the side wall of elastic connection and be stopped.
8. the electrostatic dedusting blackboard eraser that one kind as described in claim 1 can recover energy, which is characterized in that erasing the board
Cheng Zhong, flexible connector are shunk by the pressure from hand, it is reciprocal erase the board movement so that wiping board with blackboard surface into
While row friction, wiping board also contacts with each other with electrostatic friction piece and fricting movement occurs；Based on triboelectrification and electrostatic precipitation
Principle, the Electrostatic Absorption that the dust on blackboard surface is generated by friction, is drawn onto ash collecting box by air extractor via venthole, reaches
Adsorb the effect of dedusting.
9. the electrostatic dedusting blackboard eraser that one kind as described in claim 1 can recover energy, which is characterized in that erasing the board
Cheng Zhong, so that the mixing nano generator in power generator works, mechanical energy is converted electricity by realization for the reciprocal movement that erases the board
It can be recycled；Firstly, blackboard eraser is made piezoelectricity by the pressure from hand when reciprocal the erasing the board of progress acts
Piezoelectric nano linear array in generator unit is constantly bent recovery, forms potential between third electrode layer and the 4th electrode layer
Difference, according to piezoelectric effect, piezoelectric nano generator unit is produced electricl energy；Furthermore the reciprocating action to erase the board makes the electricity power generation that rubs
First electrode layer and frictional layer in unit are constantly separate, and first electrode layer had not only served as frictional layer but also served as electrode layer,
Since material electronegativity great disparity generates the gain and loss of electronics and then forms potential difference between first electrode layer and frictional layer, according to friction
Raw electricity and electrostatic induction principle, friction nanometer generating unit produce electricl energy；Then, via external current-regulating circuit, by power generator
The electric energy of generation is stored into energy storage device, provides electric energy for air extractor, realizes that converting electric energy for mechanical energy recycles.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910307344.XA CN110103617A (en) | 2019-04-17 | 2019-04-17 | A kind of electrostatic dedusting blackboard eraser that can be recovered energy |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910307344.XA CN110103617A (en) | 2019-04-17 | 2019-04-17 | A kind of electrostatic dedusting blackboard eraser that can be recovered energy |
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| CN110103617A true CN110103617A (en) | 2019-08-09 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113071253A (en) * | 2021-03-09 | 2021-07-06 | 苏晓青 | Automatic blackboard eraser is used in teaching of dust absorption |
| CN116651164A (en) * | 2023-07-18 | 2023-08-29 | 临沂市凯特莱机械制造有限责任公司 | Recovery unit of workshop floating dust is selected in freeze-drying of fruit vegetables |
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| CN116651164A (en) * | 2023-07-18 | 2023-08-29 | 临沂市凯特莱机械制造有限责任公司 | Recovery unit of workshop floating dust is selected in freeze-drying of fruit vegetables |
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Application publication date: 20190809 |