CN203818795U - Dedusting chalk cover - Google Patents
Dedusting chalk cover Download PDFInfo
- Publication number
- CN203818795U CN203818795U CN201420225664.3U CN201420225664U CN203818795U CN 203818795 U CN203818795 U CN 203818795U CN 201420225664 U CN201420225664 U CN 201420225664U CN 203818795 U CN203818795 U CN 203818795U
- Authority
- CN
- China
- Prior art keywords
- chalk
- dust
- dust collecting
- housing
- shell body
- 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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- Filtering Of Dispersed Particles In Gases (AREA)
Abstract
The utility model relates to the technical field of teaching attachments, in particular to a dedusting chalk cover. The dedusting chalk cover comprises a shell body which is in the shape of a circular truncated cone, wherein the two ends of the shell body are both open, a chalk inlet is formed in the end with the smaller diameter, dust collecting ports are formed around the chalk inlet, threads and an opening are arranged on the lateral side of the end with the smaller diameter, and a conical nut is arranged outside the end with the smaller diameter in a sleeved mode; a dust collecting chamber is arranged inside the shell body and located behind the chalk inlet, an air suction pump is arranged behind the dust collecting chamber, the dust collecting chamber and the air suction pump are connected through a channel pipe, and a filter screen is arranged in the channel pipe; the rear end of the air suction pump is connected with a power supply, a switch is arranged between the power supply and the air suction pump, a through hole is formed in the dust collecting chamber, and a lid is arranged at the end, outside the shell body, of the through hole. According to the dedusting chalk cover, chalk powder generated during writing can be collected in time effectively, falling and scattering of chalk powder are prevented, and the shell body in the shaped of the circular truncated cone can prevent chalk powder in the dust collecting chamber from leaking from the dust collecting ports; furthermore, the chalk cover is suitable for being grasped by a teacher, and writing with the chalk cover is comfortable.
Description
Technical field
The utility model relates to a kind of teaching equipment technical field, relates in particular to a kind of dust-removing chalk sleeve.
Background technology
The chalk sleeve designing in that sell in the market or existing patent has had many kinds, but major part is not removed the function of the chalk powder producing while writing, and has the effect of this function bad yet, can not effectively prevent that Faculty and Students from sucking chalk powder.
Utility model content
The purpose of this utility model is: a kind of dust-removing chalk sleeve is provided, can collects timely and effectively the chalk powder producing while writing, prevent that chalk powder from dropping or dispersing.
The utility model dust-removing chalk sleeve comprises housing, housing is truncated cone-shaped, two ends are not all sealed, in the little one end of diameter, chalk entrance is set, chalk entrance arranges dust collecting opening around, dust collecting opening is rounded, the end side surface that diameter of the housing is little arranges screw thread and opening, screw thread arranges around housing circumferencial direction, opening arranges along housing axis direction, outside, one end suit tapered cup nut that diameter of the housing is little, tapered cup nut by screw threads for fastening on housing, tapered cup nut is in order to clamp chalk, when tapered cup nut is rotated inwards, existence due to opening, can make the reduced of chalk entrance, thereby clamping chalk, in housing the inside, dust-collecting cavity is set, dust-collecting cavity is arranged on after chalk entrance, dust-collecting cavity is used for splendid attire chalk powder, asepwirator pump is set after dust-collecting cavity, dust-collecting cavity is connected by tube channel with asepwirator pump, filter screen is set in tube channel, prevent that chalk powder from entering in asepwirator pump, asepwirator pump rear end is connected with power supply, between power supply and asepwirator pump, switch is set, chalk is arranged on after chalk entrance, tighten tapered cup nut, while writing, open switch, chalk powder is just sucked in dust-collecting cavity by dust collecting opening by asepwirator pump.
Dust-collecting cavity is provided with through hole and is connected with the outside of housing, and described through hole is provided with lid in one end of housing outside, and during dust-removing chalk sleeve work, lid covers, and during cleaning dust-removing chalk sleeve, lid is opened, and pours out the chalk powder in dust-collecting cavity.
The beneficial effect that the utility model compared with prior art had is:
Dust-removing chalk sleeve can be collected the chalk powder producing while writing timely and effectively, prevents that chalk powder from dropping or dispersing, and the housing of truncated cone-shaped can prevent that the chalk powder in dust-collecting cavity from spilling from dust collecting opening, and is suitable for teacher's grasping, comfortable writing.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model;
Fig. 2 is along the cutaway view of A-A in Fig. 1.
In figure: 1, chalk entrance; 2, opening; 3, tapered cup nut; 4, housing; 5, dust-collecting cavity; 6, through hole; 7, lid; 8, filter screen; 9, tube channel; 10, asepwirator pump; 11, switch; 12, power supply; 13, dust collecting opening.
The specific embodiment
Below in conjunction with accompanying drawing, embodiment of the present utility model is described further:
As depicted in figs. 1 and 2, dust-removing chalk sleeve comprises housing 4, housing 4 is truncated cone-shaped, two ends are not all sealed, in the little one end of diameter, chalk entrance 1 is set, chalk entrance 1 is slightly large than the maximum gauge of chalk, chalk entrance 1 arranges dust collecting opening 13 around, dust collecting opening 13 is rounded, the end side surface that housing 4 diameters are little arranges screw thread and opening 2, screw thread is around housing 4 circumferencial direction settings, opening 2 is along housing 4 axis direction settings, outside, one end suit tapered cup nut 3 that housing 4 diameters are little, tapered cup nut 3 by screw threads for fastening on housing 4, tapered cup nut 3 is in order to clamp chalk, during use, first tapered cup nut 3 is backed out, chalk is arranged on to chalk entrance 1 to correct position, again tapered cup nut 3 is tightened, because there is the existence of opening 2, tapered cup nut 3 chalk entrance 1 when tightening inwards can diminish, thereby chalk is clamped.
In housing 4 the insides, dust-collecting cavity 5 is set, dust-collecting cavity 5 is arranged on after chalk entrance 1, dust-collecting cavity 5 is used for splendid attire chalk powder, dust-collecting cavity 5 arranges asepwirator pump 10 below, dust-collecting cavity 5 is connected by tube channel 9 with asepwirator pump 10, filter screen 8 is set in tube channel 9, prevent that chalk powder from entering in asepwirator pump 10, asepwirator pump 10 rear ends are connected with power supply 12, between power supply 12 and asepwirator pump 10, switch 11 is set, chalk is arranged on after chalk entrance 1, tighten tapered cup nut 3, while writing, open switch 11, chalk powder is just sucked in dust-collecting cavity 5 by dust collecting opening 13 by asepwirator pump 10, the housing 4 of truncated cone-shaped can prevent that the chalk powder of 5 li of dust-collecting cavities from spilling from dust collecting opening 13.
Dust-collecting cavity 5 is provided with through hole 6 and is connected with the outside of housing 4, and described through hole 6 is provided with lid 7 in one end of housing 4 outsides, and during dust-removing chalk sleeve work, lid 7 covers, and during cleaning dust-removing chalk sleeve, lid 7 is opened, and pours out the chalk powder of 5 li of dust-collecting cavities.
In sum, the utlity model has the advantage of collecting timely and effectively the chalk powder producing while writing, and be suitable for teacher's grasping, comfortable writing.
Claims (2)
1. a dust-removing chalk sleeve, comprise housing (4), it is characterized in that: housing (4) is truncated cone-shaped, two ends are not all sealed, in the little one end of diameter, chalk entrance (1) is set, chalk entrance (1) arranges dust collecting opening (13) around, the end side surface that housing (4) diameter is little arranges screw thread and opening (2), outside, one end suit tapered cup nut (3) that housing (4) diameter is little, in housing (4) the inside, dust-collecting cavity (5) is set, dust-collecting cavity (5) is arranged on chalk entrance (1) below, dust-collecting cavity (5) arranges asepwirator pump (10) below, dust-collecting cavity (5) is connected by tube channel (9) with asepwirator pump (10), filter screen (8) is set in tube channel (9), asepwirator pump (10) rear end is connected with power supply (12), between power supply (12) and asepwirator pump (10), switch (11) is set.
2. dust-removing chalk sleeve according to claim 1, is characterized in that: described dust-collecting cavity (5) is provided with through hole (6), and through hole (6) is provided with lid (7) in one end of housing (4) outside.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420225664.3U CN203818795U (en) | 2014-05-05 | 2014-05-05 | Dedusting chalk cover |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420225664.3U CN203818795U (en) | 2014-05-05 | 2014-05-05 | Dedusting chalk cover |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203818795U true CN203818795U (en) | 2014-09-10 |
Family
ID=51474332
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420225664.3U Expired - Fee Related CN203818795U (en) | 2014-05-05 | 2014-05-05 | Dedusting chalk cover |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203818795U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111933964A (en) * | 2016-11-11 | 2020-11-13 | 丰田自动车株式会社 | Assembling device for battery component |
-
2014
- 2014-05-05 CN CN201420225664.3U patent/CN203818795U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111933964A (en) * | 2016-11-11 | 2020-11-13 | 丰田自动车株式会社 | Assembling device for battery component |
| CN111933964B (en) * | 2016-11-11 | 2024-05-24 | 丰田自动车株式会社 | Assembling device for battery component |
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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 |
Granted publication date: 20140910 Termination date: 20150505 |
|
| EXPY | Termination of patent right or utility model |