CN202758520U - A demonstrator used for demonstrating relation between gravity and buoyancy - Google Patents
A demonstrator used for demonstrating relation between gravity and buoyancy Download PDFInfo
- Publication number
- CN202758520U CN202758520U CN 201220462394 CN201220462394U CN202758520U CN 202758520 U CN202758520 U CN 202758520U CN 201220462394 CN201220462394 CN 201220462394 CN 201220462394 U CN201220462394 U CN 201220462394U CN 202758520 U CN202758520 U CN 202758520U
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- buoyancy
- gravity
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- sink
- air pump
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Abstract
Provided is a demonstrator used for demonstrating relation between gravity and buoyancy. The demonstrator comprises a transparent container (1). A floating ball (2) and a sinking device (4) which communicate with each other through a piston (3) equipped with a buoyancy control switch are disposed in the container (1). A gas filling pipe (5) disposed at the center on the bottom of the container (1) is connected with an air pump (7) outside the container (1) through a gas guiding pipe (6). A touch switch used for controlling the air pump (7) is disposed on the top of the gas filling pipe (5). Operations can be easily performed to demonstrate relation between gravity and buoyancy by using the demonstrator used for demonstrating relation between gravity and buoyancy. The demonstrator used for demonstrating relation between gravity and buoyancy is beneficial to understanding knowledge taught in a physics course for students and has better integral using effect.
Description
Technical field
The utility model relates to a kind of physics teaching in secondary school teaching aid, is specifically related to a kind of gravity and buoyancy relationship demonstration instrument.
Background technology
Be immersed in the object in the liquid, be subject to simultaneously buoyancy and action of gravitation.When buoyancy greater than gravity, object floats in liquid, swim at last on the liquid side, this moment gravity all equal buoyancy; When buoyancy equaled gravity, object was suspended in the liquid; When buoyancy during less than gravity, object sinks in liquid.Secondary school teachers generally adopts the preach method directly to impart knowledge to one's students when lecturing gravity and concern with buoyancy, and the student is less than concept intuitively, and teaching efficiency is not good enough.
China Patent Publication No. is CN201429920, the utility model instructions that open day is on March 24th, 2010 discloses " gravity and buoyancy relationship demonstration instrument ", this utility model comprises the transparent vessel that water is housed, the sink-float thing, air pump and wireway, described sink-float thing comprises main body and thin bar, main body is inverted infundibulate, thin bar is passed the elongated portion of main body, the thin bar top arranges ball float, the thin bar bottom arranges stopper, drive stopper during the ball float floating, stopper drives main body and up moves, one end of described wireway links to each other with air pump, and the other end extends to the bottom of transparent vessel.This utility model is simple in structure, operates easyly, and successful has enriched the content of courses.But it is too loaded down with trivial details that this utility model designs on the whole, and when concrete operations, long wireway can bring inconvenience, and less ball float can cause rollover.
The utility model content
The purpose of this utility model is the deficiencies such as, operating difficulties loaded down with trivial details for existing gravity and buoyancy relationship demonstration instrument global design, demonstration weak effect, provides that a kind of global design is simpler, operation is easier, gravity and the buoyancy relationship demonstration instrument of demonstration better effects if.
The purpose of this utility model realizes by following technological means: a kind of gravity and buoyancy relationship demonstration instrument, include ball float, sink-float device that being provided with in transparent container, the container is interconnected arranges, described ball float, sink-float device arrange by the piston connection with the buoyancy control switch; The bottom center of described container also is provided with gas-filled tube, and gas-filled tube also is provided with the touching switch of control air pump by the outer air pump of wireway connecting container on the top of described gas-filled tube.
Also be provided with scaleplate on arbitrary sidewall of described container.
Described ball float is set to the sealed transparent hollow ellipsoid; Described sink-float device is set to transparent hemisphere or mostly individual spheroid.
Compared with prior art the utlity model has following obvious advantage: this gravity can operate the relation of demonstrating gravity and buoyancy more easily with buoyancy relationship demonstration instrument, more be conducive to help the student to understand the Physics Classroom Teaching knowledge, whole result of use is better.
Description of drawings
Fig. 1 is structural representation of the present utility model;
Among the figure, 1-container, 2-ball float, 3-piston, the 4-device that rises and falls, 5-gas-filled tube, 6-wireway, 7-air pump.
Embodiment
Below in conjunction with description of drawings and embodiment the utility model is described in further detail:
As shown in Figure 1 a kind of gravity and buoyancy relationship demonstration instrument include ball float 2, sink-float device 4 that being provided with in transparent container 1, the container 1 is interconnected arranges, and described ball float 2, sink-float device 4 arrange by piston 3 connections with the buoyancy control switch; The bottom center of described container 1 also is provided with gas-filled tube 5, and gas-filled tube 5 also is provided with the touching switch of control air pump 7 by the air pump 7 outside wireway 6 connecting containers 1 on the top of described gas-filled tube 5.Arrange like this, the utility model can be more convenient, simple when the demonstration operation.The utility model is when concrete operations, in container 1, add water to first five/everywhere of height, sink-float device 4 is put into water, at this moment, the gravity of sink-float device 4 is greater than buoyancy, sink-float device 4 begins to sink, when touching mutually when the bottom of its arrival container 1 and with wireway 6, open the switch of air pump 7 by touching switch, air pump 7 will pass through wireway 6, gas-filled tube 5 is toward the 4 interior inflations of sink-float device, thereby discharge its inner water, and then the buoyancy of the device 4 that causes rising and falling is greater than gravity, and sink-float device 4 begins floating, when ball float 2 surfaces, piston 3 is controlled by ball float 2, can open piston 3, like this, the gas in the sink-float device 4 will be discharged in the air from piston 3, thereby, cause the gravity of sink-float device 4 greater than buoyancy, sink-float device 4 begins to descend, when the bottom that sink-float device 4 arrives container 1 is touched mutually with wireway 6 again, again open the switch of air pump 7 by touching switch, repeat above-mentioned presentation process.
Also be provided with scaleplate on arbitrary sidewall of described container 1.Arrange like this, can observe accurately floating and the decline situation of sink-float device 4.
Described ball float 2 is set to the sealed transparent hollow ellipsoid; Arrange like this, increase buoyancy of the present utility model that can be large is as far as possible strengthened the demonstration effect.Described sink-float device 4 is set to transparent hemisphere or mostly individual spheroid.Arranging like this, also is in order to increase gas storage capacity of the present utility model, to strengthen the demonstration effect.
In a word, the utility model provide a kind of global design simpler, the operation easier, the demonstration better effects if gravity and buoyancy relationship demonstration instrument.The above; it only is a part of embodiment of the present utility model; protection domain of the present utility model is not limited to this; anyly be familiar with those skilled in the art in the technical scope that the utility model discloses; the variation that can expect easily or replacement all should be encompassed within the protection domain of the present utility model.
Claims (3)
1. a gravity and buoyancy relationship demonstration instrument, include ball float (2), sink-float device (4) that being provided with in transparent container (1), the container (1) is interconnected arranges, it is characterized in that: described ball float (2), sink-float device (4) arrange by piston (3) connection with the buoyancy control switch; The bottom center of described container (1) also is provided with gas-filled tube (5), gas-filled tube (5) also is provided with the touching switch of control air pump (7) by the outer air pump (7) of wireway (6) connecting container (1) on the top of described gas-filled tube (5).
2. a kind of gravity according to claim 1 and buoyancy relationship demonstration instrument is characterized in that: also be provided with scaleplate on arbitrary sidewall of described container (1).
3. a kind of gravity according to claim 1 and buoyancy relationship demonstration instrument, it is characterized in that: described ball float (2) is set to the sealed transparent hollow ellipsoid; Described sink-float device (4) is set to transparent hemisphere or mostly individual spheroid.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220462394 CN202758520U (en) | 2012-09-03 | 2012-09-03 | A demonstrator used for demonstrating relation between gravity and buoyancy |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220462394 CN202758520U (en) | 2012-09-03 | 2012-09-03 | A demonstrator used for demonstrating relation between gravity and buoyancy |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202758520U true CN202758520U (en) | 2013-02-27 |
Family
ID=47737689
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220462394 Expired - Fee Related CN202758520U (en) | 2012-09-03 | 2012-09-03 | A demonstrator used for demonstrating relation between gravity and buoyancy |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202758520U (en) |
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2012
- 2012-09-03 CN CN 201220462394 patent/CN202758520U/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 | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130227 Termination date: 20130903 |