CN204659305U - A kind of dust-free black board eraser - Google Patents
A kind of dust-free black board eraser Download PDFInfo
- Publication number
- CN204659305U CN204659305U CN201520218055.XU CN201520218055U CN204659305U CN 204659305 U CN204659305 U CN 204659305U CN 201520218055 U CN201520218055 U CN 201520218055U CN 204659305 U CN204659305 U CN 204659305U
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- CN
- China
- Prior art keywords
- dust
- negative pressure
- dirt system
- storage dirt
- pipe joint
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Abstract
A kind of dust-free black board eraser, comprise blackboard eraser body, storage dirt system and negative pressure device, blackboard eraser body comprises hairbrush and leads ash cover, leading ash cover for one end is provided with the cavity of opening, hairbrush one end is unsettled to be placed in cavity, the other end stretches out from this opening, and the one end of leading ash cover is provided with the pipe joint of a band negative pressure switch valve; Storage dirt system is connected with pipe joint by dust collecting duct, and storage dirt system comprises at least one dust storage container, and dust collecting duct is provided with at least one arm, and each arm is provided with the socket with pipe joint adaptation, and each arm correspondence is provided with a blackboard eraser body; Negative pressure device comprises Negative pressure machine, and Negative pressure machine is connected by pipeline with storage dirt system.The utility model structure is simple, and easy care, and maintenance point is few, and between how dust collecting duct can connect, classroom blackboard is wiped.The utility model decreases dust and disperses and contaminated air, and the health of effective protection teachers and students, the more outstanding occupational disease reducing teacher sends out rate, practical, cheap.
Description
Technical field
The utility model relates to a kind of blackboard eraser, particularly a kind of dust-free black board eraser.
Background technology
That to widely use most be also the most traditional teaching method by chalk teaching of handwriting on blackboard, but it also also exists some problems easily bringing simultaneously, wherein maximum problem is exactly while wiping letter written with chalk, chalk dust can fly upward everywhere, has had a strong impact on the healthy of Faculty and Students.
Now commercially there are some can collect the blackboard eraser of chalk dust, as the blackboard eraser with deduster, but such blackboard eraser comes with some shortcomings, certain noise is had during work, vacuum effect is not obvious, and this kind of blackboard eraser is generally that one piece of blackboard answers one to store up dirt system, cost is comparatively large, safeguards comparatively loaded down with trivial details; Also have some in addition from the dust-removing blackboard eraser of charged pool, but this type of blackboard eraser uses battery not environmentally and general structure more complicated on the one hand; On the other hand, the capacity of battery is lower, even in use because capacitance affects dust removing effects not, uses a period of time just to need to change, which adds cost.
Utility model content
The purpose of this utility model be to provide a kind of structure simple, easy to use, fly upward without chalk dust, solve noise high, trouble point is many, the dust-free black board eraser of DeGrain.
To achieve these goals, the utility model have employed following technical scheme:
A kind of dust-free black board eraser, comprise blackboard eraser body, storage dirt system and negative pressure device, described blackboard eraser body comprises hairbrush and leads ash cover, describedly lead ash cover for one end and be provided with the cavity of opening, described hairbrush one end is unsettled to be placed in described cavity, the other end stretches out from this opening, described in lead ash cover one end be provided with the pipe joint of a band negative pressure switch valve;
Described storage dirt system is connected with described pipe joint by dust collecting duct, described storage dirt system comprises at least one dust storage container, described dust collecting duct is provided with at least one arm, and each arm is provided with the socket with described pipe joint adaptation, and each arm correspondence is provided with a described blackboard eraser body;
Described negative pressure device comprises Negative pressure machine, and described Negative pressure machine is connected by pipeline with described storage dirt system.
Preferably, described storage dirt system is provided with two dust storage containers of mutually connecting.
Preferably, described dust storage container is water tank with strainer or electrostatic precipitation tank or centrifugal tank.
Preferably, described negative pressure device comprises Negative pressure machine by placed in series and negative-pressure cup, and described negative-pressure cup is placed between described Negative pressure machine and described storage dirt system.
Further, described dust collecting duct is spiral shell shape flexible pipe.
Negative pressure machine operationally, first starts to and produces certain negative pressure by the utility model, then starts negative pressure switch valve, air sucks from the aperture of hairbrush, dust absorbing enters to lead in the cavity of ash cover, and after blackboard-cleaning is clean, dust enters dust collecting duct again by the cavity of leading ash cover, finally enter dust storage container, effectively prevent powder from dispersing, and the utility model structure is simple, and easy care, maintenance point is few, and between how dust collecting duct can connect, classroom blackboard is wiped.The utility model decreases dust and disperses and contaminated air, and the health of effective protection teachers and students, the more outstanding occupational disease reducing teacher sends out rate, practical, cheap.
Accompanying drawing explanation
Fig. 1 is the structure chart of embodiment one;
Fig. 2 is the structure chart of blackboard eraser body;
Fig. 3 is the structure chart of embodiment two.
Detailed description of the invention
Now by reference to the accompanying drawings, the utility model is described in detail.
Embodiment one
With reference to accompanying drawing 1 and accompanying drawing 2, a kind of dust-free black board eraser, comprise blackboard eraser body 1, storage dirt system and negative pressure device, blackboard eraser body 1 comprises hairbrush 11 and leads ash cover 12, wherein hairbrush 11 can select good permeability, adsorption function strong and wear-resisting durable horsehair is made, leading ash cover 12 for one end is provided with the cavity of opening, lead ash cover 12 1 aspects and can collect dust, user-friendly on the other hand, hairbrush 11 one end is unsettled to be placed in cavity, the other end stretches out from this opening, and the one end of leading ash cover 12 is provided with the pipe joint 122 of a band negative pressure switch valve 121; Storage dirt system is connected with pipe joint 122 by dust collecting duct 3 (dust collecting duct 3 is spiral shell shape flexible pipe), dust collecting duct 3 is provided with two arms 31, each arm 31 is provided with the socket 32 with pipe joint 122 adaptation, each arm 31 correspondence is provided with a blackboard eraser body 1, like this, two arms 31 can correspondingly use in two classrooms, thus decrease fault generation point, are convenient to safeguard; Storage dirt system is provided with 1 dust storage container 21, and this dust storage container 21 is water tank with strainer, and negative pressure device comprises Negative pressure machine 4, and Negative pressure machine 4 is connected by pipeline with dust storage container 21.
Embodiment two
With reference to accompanying drawing 2 and accompanying drawing 3, a kind of dust-free black board eraser, comprise blackboard eraser body 1, storage dirt system and negative pressure device, blackboard eraser body 1 comprises hairbrush 11 and leads ash cover 12, leading ash cover 12 for one end is provided with the cavity of opening, hairbrush 11 one end is unsettled to be placed in cavity, and the other end stretches out from this opening, and the one end of leading ash cover 12 is provided with the pipe joint 122 of a band negative pressure switch valve 121; Storage dirt system is connected with pipe joint 122 by dust collecting duct 3 (dust collecting duct 3 is spiral shell shape flexible pipe), dust collecting duct 3 is provided with three arms 31, each arm 31 is provided with the socket 32 with pipe joint 122 adaptation, each arm 31 correspondence is provided with a blackboard eraser body 1, like this, three arms 31 can correspondingly use in three classrooms; Storage dirt system is provided with two the first dust storage container 211 and the second dust storage containers 212 of mutually connecting, wherein, first dust storage container 211 is water tank with strainer, second dust storage container 212 is centrifugal tank, negative pressure device comprises Negative pressure machine 4 by placed in series and negative-pressure cup 5, negative-pressure cup 5 is placed between Negative pressure machine 4 and the second dust storage container 212, second dust storage container 212 is connected by pipeline with negative-pressure cup 5, increasing negative-pressure cup 5 in the present embodiment mainly in order to increase the negative pressure of whole blackboard eraser, improving the dust-absorbing function of dust-free black board eraser.
Above-described the utility model embodiment, does not form the restriction to the utility model protection domain.Any do within spirit of the present utility model and principle amendment, equivalent to replace and improvement etc., all should be included within claims of the present utility model.
Claims (5)
1. a dust-free black board eraser, comprise blackboard eraser body, storage dirt system and negative pressure device, it is characterized in that, described blackboard eraser body comprises hairbrush and leads ash cover, describedly lead ash cover for one end and be provided with the cavity of opening, described hairbrush one end is unsettled to be placed in described cavity, and the other end stretches out from this opening, described in lead ash cover one end be provided with the pipe joint of a band negative pressure switch valve;
Described storage dirt system is connected with described pipe joint by dust collecting duct, described storage dirt system comprises at least one dust storage container, described dust collecting duct is provided with at least one arm, and each arm is provided with the socket with described pipe joint adaptation, and each arm correspondence is provided with a described blackboard eraser body;
Described negative pressure device comprises Negative pressure machine, and described Negative pressure machine is connected by pipeline with described storage dirt system.
2. a kind of dust-free black board eraser according to claim 1, is characterized in that, described storage dirt system is provided with two dust storage containers of mutually connecting.
3. a kind of dust-free black board eraser according to claim 2, is characterized in that, described dust storage container is water tank with strainer or electrostatic precipitation tank or centrifugal tank.
4. a kind of dust-free black board eraser according to Claims 2 or 3, is characterized in that, described negative pressure device comprises Negative pressure machine by placed in series and negative-pressure cup, and described negative-pressure cup is placed between described Negative pressure machine and described storage dirt system.
5. a kind of dust-free black board eraser according to claim 4, is characterized in that, described dust collecting duct is spiral shell shape flexible pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520218055.XU CN204659305U (en) | 2015-04-13 | 2015-04-13 | A kind of dust-free black board eraser |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520218055.XU CN204659305U (en) | 2015-04-13 | 2015-04-13 | A kind of dust-free black board eraser |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204659305U true CN204659305U (en) | 2015-09-23 |
Family
ID=54129729
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520218055.XU Expired - Fee Related CN204659305U (en) | 2015-04-13 | 2015-04-13 | A kind of dust-free black board eraser |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204659305U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104742624A (en) * | 2015-04-13 | 2015-07-01 | 石昌远 | Dust-free blackboard eraser |
-
2015
- 2015-04-13 CN CN201520218055.XU patent/CN204659305U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104742624A (en) * | 2015-04-13 | 2015-07-01 | 石昌远 | Dust-free blackboard eraser |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150923 Termination date: 20180413 |