CN203427505U - Sealing type dust-free chalk blackboard eraser - Google Patents
Sealing type dust-free chalk blackboard eraser Download PDFInfo
- Publication number
- CN203427505U CN203427505U CN201320425626.8U CN201320425626U CN203427505U CN 203427505 U CN203427505 U CN 203427505U CN 201320425626 U CN201320425626 U CN 201320425626U CN 203427505 U CN203427505 U CN 203427505U
- Authority
- CN
- China
- Prior art keywords
- seal closure
- dust
- eraser
- housing
- chalk
- 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
Links
Images
Landscapes
- Drawing Aids And Blackboards (AREA)
Abstract
The utility model relates to a sealing type dust-free chalk blackboard eraser, and belongs to the field of teaching aids. The sealing type dust-free chalk blackboard eraser is composed of a shell, a sealing hood, a check valve, an elastic door, a chalk eraser and a dust collecting cavity. The chalk eraser is fixed in the shell, and the sealing hood is arranged between the shell and the chalk eraser and can move up and down. The sealing hood is provided with the check valve capable of being flexibly opened and closed and the elastic door with elasticity. The dust collecting cavity is arranged behind the elastic door and provided with a certain space. When the sealing type dust-free chalk blackboard eraser works, under the effect of the sealing hood, dust due to wiping of the chalk eraser can be effectively limited in the sealing hood, and the dust is prevented from floating everywhere to pollute the environment.
Description
Technical field
The utility model relates to environment-friendly type realia field, is a kind of sealed dust-free chalk blackboard eraser specifically.
background technology
At present, known commercially available electric dust absorption blackboard eraser, exist volume large, heavy, need power supply, the problem such as expensive, be difficult to apply at teaching field.
summary of the invention
In order to overcome the problems such as the heavy inconvenience of current electric dust absorption blackboard eraser and the high-leveled and difficult implementation of price, the utility model provides a kind of sealed dust-free chalk device for blackboard eraser.The dust that this device adopts seal closure that chalkboard eraser is wiped covers and is collected in seal closure, avoids dust to be scattered and to fly upward everywhere, pollutes teaching environment.Because this device is without charged and dust suction annex, so simple in structure, volume is little, and cost is low.
The utility model solves the technical scheme that its technical problem adopts: the utility model is mainly comprised of housing, seal closure, check valve, flexible door, chalkboard eraser, dust-collecting cavity.Chalkboard eraser is fixed in housing.Seal closure is located between housing and chalkboard eraser.Seal closure is flexible, during pressurized towards descending in housing, during decompression, towards the housing reset of rebounding outward.Seal closure arranged on left and right sides is equipped with check valve.Seal closure left side and right one-way valve can be with the skidding of seal closure one be held one and are closed.Flexible door is located at the lower end of seal closure, and flexible door is flexible, descending during pressurized, during decompression, rebounds.Dust-collecting cavity is located at the behind of flexible door, has certain space.
The beneficial effects of the utility model are, employing is with the chalkboard eraser of seal closure device, the dust that chalkboard eraser can not only be wiped out limits and is collected in seal closure, prevent the dust dusting polluting environment everywhere that is freely scattered, and the utility model is simple in structure, do not need power supply and optional equipment, volume is little, easy to use.
Accompanying drawing explanation
Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail.
Fig. 1 is the vertical section structural map of the utility model specific embodiment 1;
Fig. 2 is the planar configuration figure of the utility model specific embodiment 1;
Fig. 3 is the cross section structural map of the utility model specific embodiment 1.
In figure: 1, housing, 2, seal closure, 3, check valve,
4, flexible door, 5, chalkboard eraser, 6, dust-collecting cavity.
The specific embodiment
As shown in Figure 1, it is mainly comprised of housing 1, seal closure 2, check valve 3, flexible door 4, chalkboard eraser 5, dust-collecting cavity 6.In housing 1, be provided with chalkboard eraser 5 and seal closure 2.Chalkboard eraser 5 is fixed in housing 1.Seal closure 2 is located between housing 1 and chalkboard eraser 5.Seal closure 2 is flexible, can be interior descending towards housing 1 during pressurized, and the reset of can rebounding outside housing 1 during decompression.The left and right side of seal closure 2 is equipped with check valve 3, and the folding with the skidding of seal closure 2.The lower end of seal closure 2 is provided with flexible door 4, and flexible door 4 is flexible, descending during surperficial pressurized, during decompression, rebounds.Dust-collecting cavity 6 has certain space, is located at the behind of flexible door 4.
As shown in Figure 2, chalkboard eraser 5 can be established one housing 1 is interior, also can establish polylith.
As shown in Figure 3, the left side of seal closure 2 and right side, be equipped with check valve 3, and when seal closure 2 moves ahead towards left side, left side check valve 3 is opened, and right one-way valve 3 is closed; When seal closure 2 moves ahead towards right side, right one-way valve 3 is opened, and left side check valve 3 cuts out.
Its method of work is that, when the utility model is worked, the seal closure 2 on the utility model, under elastic reaction, is close to blackboard all the time.When the utility model moves ahead to the left, seal closure 2 left side check valves 3 are opened, and allow the chalk writings on blackboard enter in the clear in seal closure 2.Simultaneously, seal closure 2 right one-way valve 3 are closed, the chalk writings dust of being wiped by chalkboard eraser is limited in seal closure 2, dust progressively falls under own wt effect, now, flexible door 4 is close to blackboard under elastic reaction, and the dust guiding of whereabouts is entered and is limited in dust-collecting cavity, avoids dust in wiping process, be scattered arbitrarily and fly upward.When the utility model moves ahead to the right, seal closure 2 right one-way valve 3 are opened, and left side check valve 3 cuts out, and its operation principle is identical.So repeatedly, constantly by dust collection in dust-collecting cavity 6.After work stops, the dust of collection is poured out, and can again be worked on.
Claims (2)
1. a sealed dust-free chalk device for blackboard eraser, it is mainly by housing (1), seal closure (2), check valve (3), flexible door (4), chalkboard eraser (5), dust-collecting cavity (6) forms, it is characterized in that being provided with in housing (1) chalkboard eraser (5) and seal closure (2), chalkboard eraser (5) is fixed in housing (1), seal closure (2) is located between housing (1) and chalkboard eraser (5), seal closure (2) is flexible, can be interior descending towards housing (1) during pressurized, the reset of can rebounding outside housing (1) during decompression, the left side of seal closure (2) and right side are all provided with check valve (3), left side on seal closure (2) and right one-way valve (3) can be with the skidding of seal closure (2) one be held one and are closed, seal closure (2) lower end is provided with flexible door (4), flexible door (4) is flexible, descending during surperficial pressurized, during decompression, rebound, dust-collecting cavity (6) has certain space, be located at the behind of flexible door (4).
2. a kind of sealed dust-free chalk device for blackboard eraser according to claim 1, is characterized in that described chalkboard eraser (5) can establish one in housing (1), also can establish polylith.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320425626.8U CN203427505U (en) | 2013-07-08 | 2013-07-08 | Sealing type dust-free chalk blackboard eraser |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320425626.8U CN203427505U (en) | 2013-07-08 | 2013-07-08 | Sealing type dust-free chalk blackboard eraser |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203427505U true CN203427505U (en) | 2014-02-12 |
Family
ID=50056562
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320425626.8U Expired - Fee Related CN203427505U (en) | 2013-07-08 | 2013-07-08 | Sealing type dust-free chalk blackboard eraser |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203427505U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103895427A (en) * | 2014-02-25 | 2014-07-02 | 陈浩 | Simple dust removal blackboard eraser and using method thereof |
-
2013
- 2013-07-08 CN CN201320425626.8U patent/CN203427505U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103895427A (en) * | 2014-02-25 | 2014-07-02 | 陈浩 | Simple dust removal blackboard eraser and using method thereof |
| CN103895427B (en) * | 2014-02-25 | 2016-06-29 | 陈浩 | Simple and easy dust-removing blackboard eraser and using method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN205147388U (en) | Dustproof puncher | |
| CN103287176B (en) | A kind of preparation method of dust-sucking blackboard eraser and device thereof | |
| CN202463314U (en) | Environment-friendly blackboard with overall chalk writing erasure | |
| CN203427505U (en) | Sealing type dust-free chalk blackboard eraser | |
| CN204605324U (en) | A kind of chalk erasing apparatus with automatic identification function | |
| CN202480662U (en) | Novel blackboard for teaching | |
| CN204210216U (en) | A kind of blackboard eraser for environmental protection | |
| CN204236106U (en) | A kind of teaching dust absorption blackboard eraser | |
| CN204167965U (en) | Charging pile | |
| CN203578099U (en) | Powder spraying chamber with openable or closable gun notches | |
| CN203888456U (en) | Push-and-pull blackboard quick to clean | |
| CN202492011U (en) | Bottle cover used in glass bottle manufacturing process | |
| CN201833777U (en) | Novel blackboard eraser | |
| CN202345206U (en) | Dust-absorption board eraser | |
| CN201572766U (en) | Blackboard eraser cleaning device | |
| CN202448578U (en) | Convenient and practical blackboard | |
| CN204086817U (en) | A kind of environmental protection carbon dust filling valve device | |
| CN202242637U (en) | Novel blackboard eraser | |
| CN203110668U (en) | Labor-saving environment-friendly blackboard with multiple faces | |
| CN202413161U (en) | English teaching board | |
| CN105563562A (en) | Dust collection electric planer | |
| CN202428944U (en) | Eraser | |
| CN203063438U (en) | Dustproof blackboard eraser | |
| CN204586261U (en) | A kind of Novel environment protection blackboard | |
| CN202573529U (en) | Electric dust absorption blackboard eraser |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140212 Termination date: 20150708 |
|
| EXPY | Termination of patent right or utility model |