CN202319612U - Electrostatic dedusting blackboard eraser - Google Patents
Electrostatic dedusting blackboard eraser Download PDFInfo
- Publication number
- CN202319612U CN202319612U CN2011204116032U CN201120411603U CN202319612U CN 202319612 U CN202319612 U CN 202319612U CN 2011204116032 U CN2011204116032 U CN 2011204116032U CN 201120411603 U CN201120411603 U CN 201120411603U CN 202319612 U CN202319612 U CN 202319612U
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- China
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- housing
- tier
- blackboard eraser
- casing
- ground floor
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Abstract
The utility model discloses an electrostatic dedusting blackboard eraser, which comprises a casing and brush hairs connected with the casing, wherein the casing is a two-tier structure, a power supply device and a circuit are arranged in the first tier of the casing, the second tier of the casing and the first tier are in a stepped structure, the volume of the second tier is smaller than the first tier and the second tier is a hollow structure, a plurality of through-holes are arranged on the second tier of the casing, a metal ring is respectively attached to inner walls of the through-holes and is connected with a positive pole of the power supply, a metal column is respectively arranged in the plurality of through-holes and is connected with the first tier of the casing, the metal columns are connected with the negative pole of the power supply, and the brush hairs are arranged on the second tier of the casing and connected with the metal columns. An on-off key which is capable of sliding up and down is arranged on the first tier of the casing, and first metal sheets which are connected with the metal rings and the metal columns are arranged in the on-off key. The electrostatic dedusting blackboard eraser is clean and capable of recovering chock dust, so that the dust flying is avoided. The electrostatic dedusting blackboard eraser is beneficial not only to health but also to environmental protection. The electrostatic dedusting blackboard eraser is simple in structure and convenient to use.
Description
Technical field
The utility model relates to blackboard eraser, more particularly, relates to a kind of electrostatic precipitation blackboard eraser that comprises housing and the bristle that is connected with housing.
Background technology
As everyone knows, chalk dust is to people's actual bodily harm, and is the most common with lung.In teaching process, chalk dust by academics and students's inspiration lung after, majority is delayed in the alveolar; Through a series of stimulation; The effect of chemistry and immunity just possibly cause lung's loss, comprises that inflammation in respiratory system and pulmonary ventilation function descend, and causing teacher and classmate to suffer from common PUD D has: chronic, acute pneumonia; Lung cancer, pneumoconiosis etc.
At present, existing blackboard eraser comprises housing and bristle, and this structure in use can make a large amount of chalk dust loss in air, thereby by in teachers and students' inspiration lung.
For numerous teachers and students' physical and mental health, the blackboard eraser of inventing a kind of effective dedusting is just extremely urgent.
Need use and underline static at this: two different objects will make when being in contact with one another that an object loses some electric charges, and electronics is transferred to another object and made its positively charged, and another obtains the object of some excess electrons and be electronegative.If electric charge is difficult to neutralization in separating process, electric charge will accumulate and make static on the object band.Be exactly that a kind of typical " contact separation " electrifies when an object is peeled off a plastic sheeting, the static that produces of undressing in daily life also is that " contact separation " electrifies.Electrostatic induction is positive and negative charge appears in a kind of conductor in surperficial different portions because of the influence that receives external electric field a phenomenon.General near it under electric field action of electrical body, the free electron in the conductor redistributes, and the intensity of the electric field in conductor is reduced to till zero.The result brings out at present and the electric charge of its contrary sign near one of electrical body, and the electric charge with its jack per line appears in the other end.When electrostatic induction takes place,, must be generation simultaneously, and positive and negative electric weight equates by the charge inducing of electrostatic induction gained.When electrical body is removed, the electric charge on the conductor will recover original uncharged state.
Summary of the invention
The utility model technical problem to be solved is, provides a kind of according to the electrostatic charge principle that there is a natural attraction between the sexes, the same sex is repelled each other, and utilizes electrostatic force that charged dust adsorption and sedimentation in the air is got off, to reach dedusting purpose electrostatic precipitation blackboard eraser.
In order to solve its technical problem, the technical scheme that the utility model adopted is: a kind of electrostatic precipitation blackboard eraser comprises housing and the bristle that is connected with housing; It is characterized in that said housing is a double-layer structure, wherein; Be provided with supply unit and circuit in the housing ground floor, the housing second layer becomes stepped construction and housing second layer volume less than the housing ground floor with the housing ground floor, and the said housing second layer is a hollow structure; On this housing second layer and be provided with several through holes; These some through-hole walls are attached with becket respectively, and this becket links to each other with positive source, are respectively equipped with metal column and this metal column in said these some through holes and are connected with the housing ground floor; This metal column links to each other with power cathode, and said bristle is located on the housing second layer and is attached thereto.
Said housing ground floor is provided with the on & off switch that can slide up and down, and is provided with first sheet metal with said becket and metal column in this on & off switch.
Said supply unit is in the power supply mount pad is installed on the housing ground floor.
Said circuit comprises the independent circuits that is connected with first sheet metal respectively, and is parallel with one another between these some independent circuits.
According to the utility model of said structure, its beneficial effect is that the utility model adopts the electrostatic precipitation principle, and iron plate and copper post have been installed in the housing, around it, produces an electrostatic field, and dust is adsorbed on its surface, spills in the air thereby reduce dust.The contrast test that warp erases the board in carrying out with ordinary blackboard eraser, the dust removing effects of electrostatic precipitation blackboard eraser obviously is superior to ordinary blackboard eraser.And, owing to reduced a part of contact area, reduced the frictional force with blackboard, more laborsaving.The utility model can be through on & off switch control absorption chalk dust and dust discharge automatically, and clean, chalk dust does not fly upward, recyclable white powder.Both helped healthyly, also helped environmental protection.
Description of drawings
Below in conjunction with accompanying drawing and embodiment the utility model is further described:
Fig. 1 is the utility model perspective view;
Fig. 2 is the utility model side-looking structure chart;
Fig. 3 is the utility model housing ground floor cut-away view.
Housing ground floor in the drawings, 1; 2, the housing second layer; 3, bristle; 4, becket; 5, metal column; 6, supply unit; 7, power supply mount pad; 8, on & off switch; 9, first sheet metal.
The specific embodiment
Embodiment one
Like Fig. 1, shown in Figure 2, a kind of electrostatic precipitation blackboard eraser comprises housing and the bristle that is connected with housing 3; It is characterized in that: said housing is a double-layer structure; Wherein, be provided with 7 of power supply mount pads and circuit (not shown) in the housing ground floor 1, in this power supply mount pad 7 supply unit 6 be housed; 1 one-tenth stepped construction of the housing second layer 2 and housing ground floor and the housing second layer 2 volumes are less than housing ground floor 1; The said housing second layer 2 is a hollow structure, and this housing second layer 2 is provided with three through holes, and these three through-hole walls are attached with becket 4 respectively; This becket 4 is preferably iron hoop; This becket 4 links to each other with supply unit 6 anodal warp first plain conductors, is respectively equipped with in said these three beckets 4 on metal column 5 and 5 welding of this metal column and the housing ground floor 1, and this metal column 5 links to each other through second plain conductor with supply unit 6 negative poles; This metal column 5 is preferably the copper post, and said bristle 3 is located on the housing second layer 2 and is attached thereto.
As shown in Figure 3, said housing ground floor 1 is provided with the on & off switch 8 that can slide up and down, following three first sheet metals 9 in vertically being provided with in this on & off switch 8, and this first sheet metal 9 is preferably aluminium flake.This first sheet metal 9 is connected with independent circuits separately, and parallel with one another between these three independent circuits.Said supply unit is two batteries, and two batteries link to each other with the 3rd plain conductor through two second sheet metals, and first sheet metal 9 that is positioned at the top is connected with first plain conductor; First sheet metal, 9 warps in the middle of being positioned at link to each other with the 3rd plain conductor, are positioned at second sheet metal that issues and link to each other with second plain conductor.
Plain conductor is preferably copper conductor.
The operation principle and the method for using of the utility model are described below:
The utility model electrostatic precipitation blackboard eraser is according to the electrostatic charge principle that there is a natural attraction between the sexes, the same sex is repelled each other, and utilizes electrostatic force that charged dust adsorption and sedimentation in the air is got off, to reach the purpose of dedusting.
After power-on, just produced voltage between the both positive and negative polarity, so had electric field between copper post and the iron hoop, and distance center copper post to be near more, electric field is strong more.Solid, liquid even gas all can be with static because of contact separation.This is because gas also is made up of molecule, atom, and molecule, atom " contact separation " also can take place and electrify when air flows.The object of any two unlike materials just can produce static, the sure generation static of flow air as long as separate the contact back.A spot of negative ions (though air is an insulator, but still remaining a spot of negative ions) is arranged near the air the copper post.Vigorous exercise will take place in them under the effect of highfield.And with other air molecule collision, neutral air molecule separated and produce a large amount of negative ions, cation is gone on the copper post that connects power cathode, obtains electronics, becomes air molecule again; And anion marches on towards in the process of the iron hoop that connects positive source, runs into chalk dust and other dust, makes chalk dust and other dust electronegative.So chalk dust is adsorbed on the iron hoop with other dust.
When dust suction finishes, up push away on & off switch 8; During clear dirt, down push away on & off switch 8, can in time clean out the chalk dust on the blackboard eraser, guarantee that having enough electrostatic charges stays on the utility model, makes the utility model at every moment have good dust collection capacity.
Claims (4)
1. an electrostatic precipitation blackboard eraser comprises housing and the bristle that is connected with housing, it is characterized in that; Said housing is a double-layer structure, wherein, is provided with supply unit and circuit in the housing ground floor; The housing second layer becomes stepped construction and housing second layer volume less than the housing ground floor with the housing ground floor; The said housing second layer is a hollow structure, and on this housing second layer and be provided with several through holes, these some through-hole walls are attached with becket respectively; This becket links to each other with positive source; Be respectively equipped with metal column and this metal column in said these some through holes and be connected with the housing ground floor, this metal column links to each other with power cathode, and said bristle is located on the housing second layer and is attached thereto.
2. electrostatic precipitation blackboard eraser according to claim 1 is characterized in that: said housing ground floor is provided with the on & off switch that can slide up and down, and is provided with first sheet metal with said becket and metal column in this on & off switch.
3. electrostatic precipitation blackboard eraser according to claim 1 is characterized in that: said supply unit is in the power supply mount pad is installed on the housing ground floor.
4. electrostatic precipitation blackboard eraser according to claim 1 is characterized in that: said circuit comprises the independent circuits that is connected with first sheet metal respectively, and is parallel with one another between these some independent circuits.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204116032U CN202319612U (en) | 2011-10-26 | 2011-10-26 | Electrostatic dedusting blackboard eraser |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204116032U CN202319612U (en) | 2011-10-26 | 2011-10-26 | Electrostatic dedusting blackboard eraser |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202319612U true CN202319612U (en) | 2012-07-11 |
Family
ID=46431604
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011204116032U Expired - Fee Related CN202319612U (en) | 2011-10-26 | 2011-10-26 | Electrostatic dedusting blackboard eraser |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202319612U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109130634A (en) * | 2018-09-10 | 2019-01-04 | 天津大学 | A kind of anion electric dust-free black board eraser |
-
2011
- 2011-10-26 CN CN2011204116032U patent/CN202319612U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109130634A (en) * | 2018-09-10 | 2019-01-04 | 天津大学 | A kind of anion electric dust-free black board eraser |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120711 Termination date: 20131026 |