CN2400292Y - Dust-proof eraser - Google Patents
Dust-proof eraser Download PDFInfo
- Publication number
- CN2400292Y CN2400292Y CN 99246674 CN99246674U CN2400292Y CN 2400292 Y CN2400292 Y CN 2400292Y CN 99246674 CN99246674 CN 99246674 CN 99246674 U CN99246674 U CN 99246674U CN 2400292 Y CN2400292 Y CN 2400292Y
- Authority
- CN
- China
- Prior art keywords
- dust
- casing
- chamber
- blackboard eraser
- dirt pocket
- 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.)
- Expired - Fee Related
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- Drawing Aids And Blackboards (AREA)
Abstract
The utility model provides a dust-proof blackboard eraser, which is composed of a casing, a motor, a rotary wiping piece, a draft fan and a filter screen, wherein, the upper part of the casing is provided with a dust removal chamber, and the lower part of the casing is provided with a dust collecting chamber. The filter screen and the annular dust collecting chamber are arranged in the dust removal chamber, and the upper part of the dust collecting chamber is provided with an exhaust channel communicated with the dust removal chamber. The rotary wiping piece and the draught fan are respectively fixed to the upper end and the lower end of the exhaust channel, and the motor of the impeller is fixed in the exhaust channel. The dust-proof blackboard eraser has the characteristics of reasonable design, simple structure, easy manufacturing, small size, convenient operation, good dust removing effect, etc.
Description
The utility model relates to a kind of school supply and stationery, specifically a kind of dust-proof blackboard eraser.
For thousands of years from ancient times to the present, the teacher who stands on the dais wants a large amount of chalk of inspiration to fly the end every day.As everyone knows, chalk be by lime stone, gypsum and necessarily than binding agent make and produce, it not only has obstinate toxicity, and it is little to have granularity, is easy to form aerosol with air and is suspended in for a long time in the air, and these are suspended in airborne chalk powder dust once by in the academics and students's inspiration lung in the classroom, just suffer from various breathing problems easily, as tuberculosis, pulmonary tuberculosis, asthma, rhinitis, can cause lung cancer when serious, had a strong impact on the healthy of teachers and students.
The dust-proof blackboard eraser that dust is disorderly flown.
The purpose of this utility model realizes in the following manner, dust chamber and dirt pocket are set in a casing, drive elasticity rotation wiping sheet and the rotation of air draft impeller respectively by the motor that is fixed in the casing, rotation is wiped sheet chalk writing on the blackboard is wiped, fall into dust chamber, chalk powder concentrates in the dust storage chamber of dirt pocket periphery down through the filter screen filter in ventilating fan is sent dirt pocket to then.
Accompanying drawing is the structural representation of dust-proof blackboard eraser.
Explain below with reference to Figure of description dust-proof blackboard eraser of the present utility model being done.
Dust-proof blackboard eraser of the present utility model, its structure are by casing 1, motor 2, rotation pad 3, air-introduced machine and screen pack 4 consist of, and the top of casing 1 is provided with dirt pocket 5, and the bottom arranges Dust chamber 6 is arranged, screen pack 4 and ring-like dust storage chamber 7 are set, at dust chamber 6 in dirt pocket 5 Top have an air exhaust passage 8 that communicates with dirt pocket 5, two ends are fixed with respectively rotation up and down The motor 2 of pad 3 and draught fan impeller 9 is fixed among the air exhaust passage 8.
The top of dirt pocket 5 has exhaust outlet 12 and is provided with handle 11, and one is provided with elasticity micelle 10 on the end opening limit of dust chamber 6.
Embodiment:
Its processing and fabricating of dust-proof blackboard eraser of the present utility model is very simple and convenient, and processing and fabricating gets final product shown in the by specification accompanying drawing, and casing can be made with plastic injection-moulded, and screen pack can be made with the big fibre of sponge, plastic foam or absorption affinity; Motor can use the micro machine of commercially available various models; Elasticity is wiped the available rubber of sheet, felt and plastic or other material Compound Machining and is made.
The course of work of the present utility model is, open switch, motor rotating band dynamic elasticity rotation wiping sheet and the rotation of air draft impeller, the air draft impeller is wiped the limit portion inspiration casing bottom dust chamber of sheet with dust from elasticity, and the air exhaust passage between dust chamber and dirt pocket is sent dust in the dirt pocket net filtration after filtration again.Dust under filtering is stored in the ring-like dust storage chamber of dirt pocket periphery; Cleaned air passes is discharged from the air outlet on casing top.The dust chamber of casing bottom is bowl-shape, the limit portion that contacts with blackboard surface is provided with plastic grain, and purpose is the frictional force that reduces with blackboard surface, unlikely generation noise, and make blackboard eraser shift position neatly, dirt pocket and dust chamber can be separated after class the dust of collecting is outwelled in order to using next time.
The use of dust-proof blackboard eraser of the present utility model is identical with the use of ordinary blackboard eraser very convenient.
Dust-proof blackboard eraser of the present utility model is compared with prior art, have reasonable in design, simple in structure, be easy to characteristics such as processing, little, easy to use, the good dedusting effect of volume, thereby, have good value for applications.
Except that the described technical characterictic of specification, be the known technology of those skilled in the art.
Claims (2)
1. dust-proof blackboard eraser, comprise casing, motor, rotation wiping sheet, air-introduced machine and screen pack, the top that it is characterized in that casing is provided with the dirt pocket bottom and is provided with dust chamber, screen pack and ring-like dust storage chamber are set in dirt pocket, have an air exhaust passage that communicates with dirt pocket on the top of dust chamber, two ends are fixed with rotation respectively and wipe the motor of sheet and draught fan impeller and be fixed among the air exhaust passage up and down.
2. dust-proof blackboard eraser according to claim 1 is characterized in that having exhaust outlet and handle at the top of dirt pocket, and portion is provided with the elasticity micelle on the end opening limit of dust chamber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 99246674 CN2400292Y (en) | 1999-10-13 | 1999-10-13 | Dust-proof eraser |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 99246674 CN2400292Y (en) | 1999-10-13 | 1999-10-13 | Dust-proof eraser |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2400292Y true CN2400292Y (en) | 2000-10-11 |
Family
ID=34032250
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 99246674 Expired - Fee Related CN2400292Y (en) | 1999-10-13 | 1999-10-13 | Dust-proof eraser |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2400292Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106826440A (en) * | 2016-12-25 | 2017-06-13 | 重庆宜居门业有限公司 | Timber sanding apparatus |
| CN107053013A (en) * | 2017-05-27 | 2017-08-18 | 苏州苏铸重工有限公司 | A kind of casting is ground dust arrester |
-
1999
- 1999-10-13 CN CN 99246674 patent/CN2400292Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106826440A (en) * | 2016-12-25 | 2017-06-13 | 重庆宜居门业有限公司 | Timber sanding apparatus |
| CN107053013A (en) * | 2017-05-27 | 2017-08-18 | 苏州苏铸重工有限公司 | A kind of casting is ground dust arrester |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |