CN2924689Y - Air quality demonstrating instrument - Google Patents
Air quality demonstrating instrument Download PDFInfo
- Publication number
- CN2924689Y CN2924689Y CN 200620085681 CN200620085681U CN2924689Y CN 2924689 Y CN2924689 Y CN 2924689Y CN 200620085681 CN200620085681 CN 200620085681 CN 200620085681 U CN200620085681 U CN 200620085681U CN 2924689 Y CN2924689 Y CN 2924689Y
- Authority
- CN
- China
- Prior art keywords
- air quality
- utility
- model
- instrument
- balance frame
- 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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Abstract
The utility model discloses a demonstration instrument of air quality and pertains to a teaching instrument, in particular to a mechanical demonstration instrument. The demonstration instrument of air quality is characterized in that a weight disk providing with weights and pulling line is hanged on one end of a balance frame and a hollow ball with the pulling line is hanged on the other end of the balance frame. The balance frame is composed of a base, a frame, a horizontal beam and a bearing. The utility model has a visual display, simple structure and easy production, which can not only be used as the finished teaching device but also can be produced and used by the teachers.
Description
Affiliated technical field
The utility model belongs to instruments used for education, particularly the mechanics demonstration instrument.
Background technology
For classman at the bottom of pupil, the middle school, wanting them to understand air is to have the very big strength of often will taking of certain mass to explain, use the precision balance Demonstration available, for vast rural primary and secondary school, be difficult for popularizing, the still convenient at present instrument of demonstrating air quality.
Summary of the invention
The purpose of this utility model provides a kind of novel simple air quality demonstrator and gets technical scheme.
The technical solution of the utility model is that a kind of air quality demonstrator is characterized in that: balance frame one end of being made up of base, support, crossbeam, the bearing scale pan of band backguy that plays has counterweight, the other end hollow ball of band backguy that plays in the dish.
Described hollow ball is football, vollyball or basketball.
Using method of the present utility model be with the ball pin when being full of air in the hollow ball ball inner air pressure greater than atmospheric pressure, the counterweight of regulating in the scale pan makes beam balance, insert the air that the ball pin emits in the ball then and extract the ball pin, at this moment the scale pan end sinks, explanation also reduces owing to the gas in the spheroid reduces quality thus, thereby the proof air has certain mass.
The utility model intuitive display, simple in structure, be easy to make, both can be used as the finished product instruments used for education and also can make use by teacher oneself.
Description of drawings
Accompanying drawing 1 is a structural representation of the present utility model.
Among the figure, 1. base, 2. support, 3. scale pan, 4. counterweight, 5. crossbeam, 6. bearing, 7. backguy, 8. hollow ball.
Embodiment
Embodiment of the present utility model is, as shown in the figure:
Claims (2)
1. air quality demonstrator is characterized in that: balance frame one end of being made up of base, support, crossbeam, the bearing scale pan of band backguy that plays has counterweight, the other end hollow ball of band backguy that plays in the dish.
2. aerostatic buoyancy demonstrator according to claim 1 is characterized in that: described hollow ball is football, vollyball or basketball.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620085681 CN2924689Y (en) | 2006-06-16 | 2006-06-16 | Air quality demonstrating instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620085681 CN2924689Y (en) | 2006-06-16 | 2006-06-16 | Air quality demonstrating instrument |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2924689Y true CN2924689Y (en) | 2007-07-18 |
Family
ID=38261118
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200620085681 Expired - Fee Related CN2924689Y (en) | 2006-06-16 | 2006-06-16 | Air quality demonstrating instrument |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2924689Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103943006B (en) * | 2014-01-21 | 2016-06-29 | 余姚市神马教仪成套有限公司 | Buoyant gas demonstration device |
-
2006
- 2006-06-16 CN CN 200620085681 patent/CN2924689Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103943006B (en) * | 2014-01-21 | 2016-06-29 | 余姚市神马教仪成套有限公司 | Buoyant gas demonstration device |
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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 |