CN209037258U - A kind of electrostatic dedusting eraser - Google Patents
A kind of electrostatic dedusting eraser Download PDFInfo
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- CN209037258U CN209037258U CN201821386453.2U CN201821386453U CN209037258U CN 209037258 U CN209037258 U CN 209037258U CN 201821386453 U CN201821386453 U CN 201821386453U CN 209037258 U CN209037258 U CN 209037258U
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- shell
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- eraser
- electrostatic dedusting
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Abstract
The utility model relates to a kind of electrostatic dedusting erasers.Electrostatic dedusting eraser includes shell and hairbrush, magnetic induction power generator is equipped in shell, electrostatic dedusting eraser further includes the booster circuit being sequentially connected electrically with magnetic induction power generator, rectification circuit, filter circuit and voltage regulator circuit, it is fixed with adsorbing powder dust conduct piece on shell, is conductively connected on shell for the position of human hand held and the negative pole end of voltage regulator circuit.During erasing the board, solenoid cutting magnetic induction line makes to generate electric current in solenoid closed circuit, then unstable alternating current is converted by stable DC by booster circuit, rectification circuit, filter circuit and voltage regulator circuit again, stable electric field is formed between adsorbing powder dust conduct piece and blackboard, to make dust move to adsorbing powder dust conduct piece, it is finally stored in dust-collecting cavity, solves the problems, such as that electrostatic dedusting eraser dust collection efficiency is low in the prior art.
Description
Technical field
The utility model relates to a kind of electrostatic dedusting erasers.
Background technique
At this stage most of teachers at school when still blackboard is used to impart knowledge to students, chalk dust flies upward the not only ring to surrounding
Very big pollution is caused in border, can also generate serious injury to human body.Therefore, how fast and effeciently to remove during erasing the board
Chalk dust, be always the problem of attracting people's attention.
The dedusting method of common dust absorption blackboard eraser is generally divided into negative-pressure adsorption, Electrostatic Absorption and the two combination and adsorbs, and one
As be to drive blower or metal to generate electrostatic precipitation by electric energy, therefore mostly use external power supply.Authorization Notice No. is
CN205238962U, authorized announcement date are that the Chinese patent document of 2016.05.18 discloses a kind of dust-removing blackboard eraser, including shell
Body is provided with magnetic sheet in shell, is each provided with one of metal guide rail on the inside of shell both ends, magnetic sheet both ends are arranged in metal guide rail
Top is additionally provided with movable conductor and fixed conducting wire in shell, and movable conductor has a pair, and movable conductor both ends are installed on corresponding gold
Belong in guide rail, fixed conducting wire both ends are separately fixed at the inside at the both ends of blackboard eraser shell by conducting wire fixing end, and conduction is fixed
End lower end surface is in contact with the upper surface of corresponding metal guide rail, and magnetic sheet, metal guide rail, movable conductor and fixed conducting wire constitute magnetic
Induction generating set.The blackboard eraser utilizes conductor cutting magnetic induction line, generates motional electromotive force, the electromotive force of generation at conductor both ends
Electric current is generated in conductor circuit, the electric field around electric current has suction-operated to chalk, realizes cleaning.The utility model structure letter
Single, the voltage that blackboard eraser generates is small, and is alternating current in circuit during erasing the board, and influences dust collection efficiency.
Utility model content
The purpose of this utility model is to provide a kind of electrostatic dedusting erasers, for solving electrostatic precipitation plate in the prior art
Wipe the low problem of dust collection efficiency.
To achieve the above object, the technical solution of the electrostatic dedusting eraser of the utility model is:
Electrostatic dedusting eraser, including shell and for the hairbrush of erasing blackboard writing, shell is interior to be equipped with magnetic induction power generation dress
Set, electrostatic dedusting eraser further include the booster circuit being sequentially connected electrically with magnetic induction power generator, rectification circuit, filter circuit and
Voltage regulator circuit is fixed with the adsorbing powder dust conduct piece connecting with the positive terminal of voltage regulator circuit, the negative pole end of voltage regulator circuit on shell
Ground connection.
The beneficial effects of the utility model are: magnetic induction power generator is equipped in the electrostatic dedusting eraser of the utility model,
During erasing the board, magnetic induction power generator generates electric current, then passes through booster circuit, rectification circuit, filter circuit again
Unstable alternating current is converted into stable DC with voltage regulator circuit, is connect later with adsorbing powder dust conduct piece, in dust
Stable electric field is formed between absorption conduct piece and blackboard, dust is ionized and charged by electric field, so that dust be made to lead to adsorbing powder dust
Electric part movement, is finally stored in dust-collecting cavity, solves the problems, such as that electrostatic dedusting eraser dust collection efficiency is low in the prior art.
Further, the adsorbing powder dust conduct piece is metal polar plate, and metal polar plate is convenient for setting and adsorption area is big.
Further, in order to protect to magnetic induction power generator, the shell is equipped with insulating barrier, also sets in shell
There are the power generator separated by insulating barrier protection chamber and dust-collecting cavity, adsorbing powder dust conduct piece to be located at the dust-collecting cavity of insulating barrier
The side at place.
Further, the magnetic induction power generator include solenoid and in solenoid along solenoid axis direction activity
The magnetic patch of assembly.
Further, in order to improve generating efficiency, the axis of the solenoid and magnetic patch is prolonged along the width of blackboard eraser by direction
It stretches.
Further, the hairbrush is arranged on adsorbing powder dust conduct piece, and hairbrush and dust-collecting cavity are respectively at adsorbing powder dust
The two sides of conduct piece.
Further, for the ease of control, connection voltage regulator circuit is equipped with the route of adsorbing powder dust conduct piece for controlling
The switch that adsorbing powder dust conduct piece processed is powered.
Further, for the ease of holding blackboard eraser, the two sides in the case width direction are equipped with the groove for holding.
Detailed description of the invention
Fig. 1 is the blackboard eraser overall structure diagram of the electrostatic dedusting eraser specific embodiment of the utility model；
Fig. 2 is the blackboard eraser circuit diagram of the electrostatic dedusting eraser specific embodiment of the utility model；
Fig. 3 is the circuit diagram of the electrostatic dedusting eraser specific embodiment of the utility model；
Fig. 4 is the structural schematic diagram of the metal polar plate of the electrostatic dedusting eraser specific embodiment of the utility model；
Fig. 5 is the side view of Fig. 4；
Fig. 6 is the schematic diagram of the power generator of the electrostatic dedusting eraser specific embodiment of the utility model；
Fig. 7 is the main view of the power generator of the electrostatic dedusting eraser specific embodiment of the utility model；
Fig. 8 is the side view of Fig. 7；
In figure: 1, shell；2, power generator protects chamber；21, solenoid；22, magnetic patch；23, booster circuit；24, plastic tube；
25, u-bracket；3, insulating barrier；4, dust-collecting cavity；5, metal polar plate；51, mesh；52, hairbrush；53, insulation film；6, groove；
7, it switchs.
Specific embodiment
The embodiments of the present invention is described further with reference to the accompanying drawing.
The specific embodiment of the electrostatic dedusting eraser of the utility model, as shown in Figure 1 to Figure 2, electrostatic dedusting eraser is divided into
Three layers, power generator protection chamber 2 is provided in first layer, the second layer is dust-collecting cavity 4, and third layer is hairbrush 52, and power generator is protected
It is separated between shield chamber 2 and dust-collecting cavity 4 by insulating barrier 3, is metal polar plate 5, metal polar plate between dust-collecting cavity 4 and hairbrush 52
Constitute adsorbing powder dust conduct piece.
As shown in Fig. 2, being equipped with solenoid closed circuit in power generator protection chamber 2, solenoid closed circuit includes helical
Pipe 21 and the magnetic patch 22 being arranged in solenoid 21.As shown in Figure 6 to 8, the solenoid of the present embodiment is wrapped in a section plastics
24 outside of pipe, magnetic patch 22 are arranged in plastic tube, and magnetic patch two sides are equipped with spring to offset collision of the magnetic patch to blackboard eraser side wall, reduce
Noise when collision.It is wound with solenoidal plastic tube to be embedded in u-bracket 25, both ends and the u-bracket 25 of plastic tube are matched
It closes, u-bracket 25 is bolted on insulating barrier.Blackboard eraser is swung in the horizontal direction mostly when due to erasing the board, so
The magnetic patch 22 and solenoid being laterally arranged efficient can convert electric energy for the kinetic energy of blackboard eraser.
Circuit diagram in the present embodiment in blackboard eraser as shown in figure 3, be connected with booster circuit after solenoid closed circuit,
Transformer is equipped in booster circuit, voltage is risen to 700V to 900V than selection 1:200 by transformer number.It is connected after boosting
There is bridge type full-wave rectifying circuit A, passes through D1~D4Rectifier diode becomes direct current.In order to improve utilization rate of electrical, rectify
Filter circuit B and voltage regulator circuit C are also connected with after circuit, then circuit passes through steady by the filter circuit of two capacitors composition
Diode is pressed to carry out pressure stabilizing, voltage is about 800V or so at this time.Cathode is finally connected to a metal contact, when in use,
Cathode is connected via human body with the earth.And the place that contact insertion blackboard eraser shell is used to hold is grounded, anode and metal
Pole plate connection.D in figure1、D2、D3、D4、D5Using IN5399 silicone tube, R1And R1For 200 Ω, R3For protective resistance, C1, C2It is 0.15
μF.Since this product is high voltage low current, and cathode has added protective resistance, so fool proof to human body.Other embodiments
In, blackboard eraser shell use metal material when, directly cathode can also be connected on blackboard eraser, at this time metal polar plate with it is black
Insulating layer is set between blackboard eraser shell.
The present embodiment is also provided with switch 7 on the route that anode is connected to metal polar plate, can be not required in this way some
Disconnecting circuit when wanting metal polar plate to adsorb dust, such as when topple over dust in dust-collecting cavity 4.In other embodiments,
It can also be not provided with switching；In other embodiments, magnetic patch and solenoid can also be obliquely installed；In other embodiments, magnetic
Induction generating set can also be made of magnetic sheet, metal guide rail, movable conductor and fixed conducting wire, and magnetic sheet is provided in shell,
It is each provided with one of metal guide rail on the inside of shell both ends, metal guide rail is arranged in the top at magnetic sheet both ends, is additionally provided with work in shell
Moving-conductor and fixed conducting wire, movable conductor have a pair, and movable conductor both ends are installed in corresponding metal guide rail, fixed conducting wire two
End is separately fixed at the inside at the both ends of blackboard eraser shell, conductive fixing end lower end surface and corresponding metal by conducting wire fixing end
The upper surface of guide rail is in contact.
The dust-collecting cavity 4 of the present embodiment is surrounded by metal polar plate 5, insulating barrier 3 and shell 1.Metal polar plate and insulating barrier 3
It is arranged in parallel, the hairbrush 52 for erasing blackboard writing, as shown in Figure 4 and Figure 5, hairbrush subregion is provided on metal polar plate 5
It is bonded on metal polar plate, is bonded between the region of hairbrush and is equipped with mesh, surrounding of the metal polar plate in hairbrush side is additionally provided with absolutely
Edge film 53 can prevent flour dust overflow, increase efficiency of dust collection, and the mesh 51 on metal polar plate 5 passes through for dust.Blackboard eraser
Shell 1 uses detachable structure, convenient for opening the dust toppled in dust-collecting cavity 4, for the ease of holding blackboard eraser, blackboard eraser shell 1
Side in the width direction is additionally provided with groove 6.In other embodiments, hairbrush can also be arranged on the side of shell 1 or
On other plate structures, shell side or plate structure are equipped with the through hole passed through for dust, have the shell of hairbrush at this time
Or other plate structures and insulating barrier surround dust-collecting cavity, metal polar plate is arranged in dust-collecting cavity；In other embodiments, dust
Absorption conduct piece is also possible to plate-shape metal pole plate, and plate-shape metal pole plate is equipped with the strip-shaped hole passed through for dust；In other realities
It applies in example, aperture can also be set on metal polar plate, be fixed in brush tuft insertion aperture.
In use, the writing on 52 erasing blackboard of hairbrush on blackboard eraser, generates dust, and magnetic patch is constantly past in solenoid
Multiple movement, solenoid cutting magnetic induction line make to generate electric current in solenoid closed circuit, subsequently pass through booster circuit 23 and rectification
Unstable alternating current is converted into stable DC by circuit, and then rectification circuit is connected with filter regulator circuit.Circuit
After anode is connect with metal polar plate, keeps metal polar plate positively charged, form stable electric field, electric field between metal polar plate and blackboard
Dust is ionized and is charged, so that dust be made to move to metal polar plate, the mesh 51 for then passing through metal polar plate 5 enters and is stored in
In dust-collecting cavity 4.
Claims (5)
1. electrostatic dedusting eraser, including shell and for the hairbrush of erasing blackboard writing, shell is interior to be equipped with magnetic induction power generator,
It is characterized by: electrostatic dedusting eraser further includes the booster circuit, rectification circuit, filter being sequentially connected electrically with magnetic induction power generator
Wave circuit and voltage regulator circuit are fixed with the adsorbing powder dust conduct piece connecting with the positive terminal of voltage regulator circuit, the dust on shell
Absorption conduct piece is metal polar plate, and the negative pole end of voltage regulator circuit is grounded, and the two sides in the case width direction are equipped with takes for people
The groove held, the groove is interior to be equipped with the metal contact being electrically connected with voltage regulator circuit negative pole end；Or the shell is metal material
Matter, the cathode are connected to shell, are provided with insulating layer between the metal polar plate and shell.
2. electrostatic dedusting eraser according to claim 1, it is characterised in that: the shell is equipped with insulating barrier, in shell
It is additionally provided with the power generator protection chamber separated by insulating barrier and dust-collecting cavity, adsorbing powder dust conduct piece is located at the storage of insulating barrier
Side where dirt chamber.
3. electrostatic dedusting eraser according to claim 1, it is characterised in that: the magnetic induction power generator includes solenoid
With the magnetic patch assembled in solenoid along the activity of solenoid axis direction.
4. electrostatic dedusting eraser according to claim 3, it is characterised in that: the axis of the solenoid and magnetic patch is along blackboard eraser
Width direction extend.
5. electrostatic dedusting eraser according to claim 1, it is characterised in that: the hairbrush is arranged in adsorbing powder dust conduct piece
On, hairbrush is respectively at the two sides of adsorbing powder dust conduct piece with dust-collecting cavity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821386453.2U CN209037258U (en) | 2018-08-27 | 2018-08-27 | A kind of electrostatic dedusting eraser |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821386453.2U CN209037258U (en) | 2018-08-27 | 2018-08-27 | A kind of electrostatic dedusting eraser |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209037258U true CN209037258U (en) | 2019-06-28 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821386453.2U Active CN209037258U (en) | 2018-08-27 | 2018-08-27 | A kind of electrostatic dedusting eraser |
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| CN (1) | CN209037258U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108944199A (en) * | 2018-08-27 | 2018-12-07 | 华北水利水电大学 | Electrostatic dedusting eraser |
| CN113913776A (en) * | 2021-10-20 | 2022-01-11 | 万津实业(赤壁)有限公司 | Dust collector and coating machine |
| CN114107920A (en) * | 2021-10-15 | 2022-03-01 | 万津实业(赤壁)有限公司 | Sputtering coating device |
-
2018
- 2018-08-27 CN CN201821386453.2U patent/CN209037258U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108944199A (en) * | 2018-08-27 | 2018-12-07 | 华北水利水电大学 | Electrostatic dedusting eraser |
| CN114107920A (en) * | 2021-10-15 | 2022-03-01 | 万津实业(赤壁)有限公司 | Sputtering coating device |
| CN113913776A (en) * | 2021-10-20 | 2022-01-11 | 万津实业(赤壁)有限公司 | Dust collector and coating machine |
| CN113913776B (en) * | 2021-10-20 | 2023-09-29 | 万津实业(赤壁)有限公司 | Dust collector and coating machine |
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