CN203746306U - Buoyancy demonstration device - Google Patents
Buoyancy demonstration device Download PDFInfo
- Publication number
- CN203746306U CN203746306U CN201420123274.5U CN201420123274U CN203746306U CN 203746306 U CN203746306 U CN 203746306U CN 201420123274 U CN201420123274 U CN 201420123274U CN 203746306 U CN203746306 U CN 203746306U
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- CN
- China
- Prior art keywords
- weight
- water
- kerosene
- buoyancy
- note
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- Expired - Fee Related
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Abstract
The utility model discloses a buoyancy demonstration device, comprising a casing prepared by transparent material. The casing is provided with a water feeding chamber, and the top part of the water feeding chamber is provided with a water-feeding hole. The water-feeding chamber is suspended with a first dynamometer, and the bottom part of the first dynamometer is suspended with a first weight. The first weight does not contact with the bottom of the water-feeding chamber, and is provided with a volume scale. The water-feeding chamber is provided with a capacity scale, and the bottom of the water-feeding chamber is provided with a water-discharging pipe, where a switch valve is arranged. The buoyancy demonstration device is advantageous in that the structure is simple; the buoyancy can be confirmed to be generated in a manner that liquid is displaced by the weight, and the buoyancy is proportional to the volume of the displaced liquid; the buoyancy can be proportional to the density of the displaced liquid; water and kerosene can be conveniently discharged; the volume of the first weight and the second weight, immersing in the liquid can be conveniently observed, and the volume of injected water and kerosene can be conveniently observed.
Description
Technical field
The utility model relates to a kind of physics teaching demonstration apparatus, particularly a kind of buoyancy demonstrator.
Background technology
At present, in Process of Physics Teaching in Middle School, teacher is in explaining the buoyancy of liquid, owing to lacking demonstration teaching aid intuitively, students is difficult to understand buoyancy and how produces, and is also difficult to understand size and which relating to parameters system of buoyancy, is not easy to carrying out smoothly of teaching.
Summary of the invention
Problem to be solved in the utility model is: provide a kind of simple in structure, be convenient to students and understand the buoyancy demonstrator that buoyancy is size that how to produce and buoyancy and which relating to parameters system.
In order to solve the problems of the technologies described above, buoyancy demonstrator of the present utility model, comprise the housing of being made by transparent material, in described housing, be provided with water-injecting cavity, the top of described water-injecting cavity is provided with water injection hole, in described water-injecting cavity, be hung with the first dynamometer, the bottom hung of described the first dynamometer has the first weight, described the first weight does not contact with the bottom surface of water-injecting cavity, described the first weight is provided with volume markings, described water-injecting cavity is provided with containing mark, and the bottom of described water-injecting cavity is provided with drainpipe, and described drainpipe is provided with controlled valve.
For the size of the buoyancy that liquid produces of different densities relatively, buoyancy demonstrator of the present utility model, in described housing, be also provided with note kerosene chamber, the top in described note kerosene chamber is provided with note kerosene hole, described note kerosene is hung with the second dynamometer in chamber, the bottom hung of described the second dynamometer has the second weight, described the second weight does not contact with the bottom surface in note kerosene chamber, described the second weight is provided with volume markings, described note kerosene chamber is provided with containing mark, the bottom in described note kerosene chamber is provided with row's kerosene pipe, described row's kerosene pipe is provided with controlled valve, described the first weight is identical with the second weight size, be equal in weight and suspension height contour.
The beneficial effect that the utility model is obtained is: (1) is simple in structure, (2) from water injection hole constantly to water filling in water-injecting cavity, along with the volume that the first weight is submerged by water is increasing, the weight of shown the first weight of the first dynamometer also constantly reduces, and the weight reducing is directly proportional to the volume of submergence, thereby confirm that buoyancy is to produce because weight arranges liquid, the size of buoyancy is directly proportional to the volume that weight arranges liquid, (3) simultaneously from water injection hole and note kerosene hole to water and the kerosene of the capacity such as injections in water-injecting cavity and note kerosene chamber, the capacity of water and the capacity of kerosene that the first weight and the second weight arrange are equated, now, the reduction of the weight of shown the first weight of the first dynamometer be greater than the second shown weight of the second dynamometer weight reduction, and the reduction of the weight of the second weight be the weight of the first weight reduction 80%, 80% of the buoyancy that to be the buoyancy that produces of kerosene produce for water, due to 80% of the density of the kerosene density that is water, thereby confirm, the size of buoyancy is directly proportional to the density that arranges liquid, (4) bottom of water-injecting cavity is provided with drainpipe, and drainpipe is provided with controlled valve, and the bottom in note kerosene chamber is provided with row's kerosene pipe, and row's kerosene pipe is provided with controlled valve, convenient after demonstration, and water and kerosene are discharged, on (5) first weights and the second weight, be equipped with volume markings, convenient observation the first weight and the second weight immerse the volume of liquid, and water-injecting cavity and note kerosene chamber are equipped with containing mark, are convenient to observe the water of injection and the volume of kerosene.
Brief description of the drawings
Fig. 1 is structural representation of the present utility model.
In figure: 1, water injection hole, 2, the first dynamometer, 3, containing mark, 4, the second dynamometer, 5, note kerosene chamber, 6, note kerosene hole, 7, controlled valve, 8, row's kerosene pipe, 9, the second weight, 10, volume markings, 11, the first weight, 12, drainpipe, 13, water-injecting cavity.
Embodiment
As shown in Figure 1, buoyancy demonstrator of the present utility model, comprise the housing of being made by transparent material, in described housing, be provided with water-injecting cavity 13, the top of described water-injecting cavity 13 is provided with water injection hole 1, in described water-injecting cavity 13, be hung with the first dynamometer 2, the bottom hung of described the first dynamometer 2 has the first weight 11, described the first weight 11 does not contact with the bottom surface of water-injecting cavity 13, described the first weight 11 is provided with volume markings 10, described water-injecting cavity 13 is provided with containing mark 3, the bottom of described water-injecting cavity 13 is provided with drainpipe 12, described drainpipe 12 is provided with controlled valve 7, in described housing, be also provided with note kerosene chamber 5, the top in described note kerosene chamber 5 is provided with note kerosene hole 6, in described note kerosene chamber 5, be hung with the second dynamometer 4, the bottom hung of described the second dynamometer 4 has the second weight 9, described the second weight 9 does not contact with the bottom surface in note kerosene chamber 5, described the second weight 9 is provided with volume markings 10, described note kerosene chamber 5 is provided with containing mark 3, the bottom in described note kerosene chamber 5 is provided with row's kerosene pipe 8, described row's kerosene pipe 8 is provided with controlled valve 7, described the first weight 11 is identical with the second weight 9 sizes, be equal in weight and suspension height contour.
Buoyancy demonstrator of the present utility model, simple in structure, when concrete demonstration, from water injection hole 1 constantly to water filling in water-injecting cavity 13, along with the volume that the first weight 11 is submerged by water is increasing, the weight of shown the first weight 11 of the first dynamometer 2 also constantly reduces, and the weight reducing is directly proportional to the volume of submergence, and the weight that the first weight 11 reduces, just be the buoyancy that water produces the first weight 11, thereby confirm that buoyancy is to produce because weight arranges liquid, the size of buoyancy is directly proportional to the volume that weight arranges liquid.
Simultaneously from water injection hole 1 and note kerosene hole 6 to water and the kerosene of the capacity such as injections in water-injecting cavity 13 and note kerosene chamber 5, the capacity of water and the capacity of kerosene that the first weight 11 and the second weight 9 arrange are equated, now, the reduction of the weight of shown the first weight 11 of the first dynamometer 2 be greater than the second shown weight 9 of the second dynamometer 4 weight reduction, and the reduction of the weight of the second weight 9 be the weight of the first weight 11 reduction 80%, 80% of the buoyancy that to be the buoyancy that produces of kerosene produce for water, due to 80% of the density of the kerosene density that is water, thereby confirm, the size of buoyancy is directly proportional to the density that arranges liquid.
The bottom of water-injecting cavity 13 is provided with drainpipe 12, and drainpipe 12 is provided with controlled valve 7, and the bottom in note kerosene chamber 5 is provided with row's kerosene pipe 8, and row's kerosene pipe 8 is provided with controlled valve 7, convenient after demonstration, and water and kerosene are discharged.
On the first weight 11 and the second weight 9, be equipped with volume markings 10, conveniently observation the first weight 11 and the second weight 9 immerse the volume of liquid, and water-injecting cavity 13 and note kerosene chamber 5 are equipped with containing mark 3, are convenient to observe the water of injection and the volume of kerosene.
Claims (2)
1. a buoyancy demonstrator, it is characterized in that: comprise the housing of being made by transparent material, in described housing, be provided with water-injecting cavity (13), the top of described water-injecting cavity (13) is provided with water injection hole (1), in described water-injecting cavity (13), be hung with the first dynamometer (2), the bottom hung of described the first dynamometer (2) has the first weight (11), described the first weight (11) does not contact with the bottom surface of water-injecting cavity (13), described the first weight (11) is provided with volume markings (10), described water-injecting cavity (13) is provided with containing mark (3), the bottom of described water-injecting cavity (13) is provided with drainpipe (12), described drainpipe (12) is provided with controlled valve (7).
2. buoyancy demonstrator according to claim 1, it is characterized in that: in described housing, be also provided with note kerosene chamber (5), the top in described note kerosene chamber (5) is provided with note kerosene hole (6), in described note kerosene chamber (5), be hung with the second dynamometer (4), the bottom hung of described the second dynamometer (4) has the second weight (9), described the second weight (9) does not contact with the bottom surface in note kerosene chamber (5), described the second weight (9) is provided with volume markings (10), described note kerosene chamber (5) is provided with containing mark (3), the bottom in described note kerosene chamber (5) is provided with row's kerosene pipe (8), described row's kerosene pipe (8) is provided with controlled valve (7), described the first weight (11) is identical with the second weight (9) size, be equal in weight and suspension height contour.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420123274.5U CN203746306U (en) | 2014-03-13 | 2014-03-13 | Buoyancy demonstration device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420123274.5U CN203746306U (en) | 2014-03-13 | 2014-03-13 | Buoyancy demonstration device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203746306U true CN203746306U (en) | 2014-07-30 |
Family
ID=51346079
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420123274.5U Expired - Fee Related CN203746306U (en) | 2014-03-13 | 2014-03-13 | Buoyancy demonstration device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203746306U (en) |
-
2014
- 2014-03-13 CN CN201420123274.5U patent/CN203746306U/en not_active Expired - Fee Related
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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: 20140730 Termination date: 20150313 |
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| EXPY | Termination of patent right or utility model |