CN201927251U - Gravity and buoyancy relation demonstrating instrument - Google Patents
Gravity and buoyancy relation demonstrating instrument Download PDFInfo
- Publication number
- CN201927251U CN201927251U CN2011200385881U CN201120038588U CN201927251U CN 201927251 U CN201927251 U CN 201927251U CN 2011200385881 U CN2011200385881 U CN 2011200385881U CN 201120038588 U CN201120038588 U CN 201120038588U CN 201927251 U CN201927251 U CN 201927251U
- Authority
- CN
- China
- Prior art keywords
- gravity
- buoyancy
- container
- float
- sink
- 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
Links
Images
Landscapes
- Toys (AREA)
Abstract
A gravity and buoyancy relation demonstrateing instrument comprises a transparent container (1). A floater (2) and a float-and-sink device (4) are arranged inside the container (1), an inflating tube (5) connected with air pump (7) outside the container (1) through an air guide tube (6) is arranged in the center of the bottom of the container (1), and the lower end of the floater (2) is connected with a piston (3) at the top end of the float-and-sink device (4) through a vertical rod. The floater (2) is a sealed hollow ellipsoid, and the float-and-sink device (4) is a transparent semisphere or a most part of a sphere. Demonstration of relation of gravity and buoyancy can be operated conveniently by means of the gravity and buoyancy relation demonstrating instrument, students can beneficially understand knowledge learned in physic classes, and integral utilization effect is better.
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 relation demonstration instrument.
Background technology
Be immersed in the object in the liquid, be subjected to the effect of buoyancy and gravity simultaneously.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 notion intuitively, and teaching efficiency is not good enough.
The Chinese patent publication number is CN201429920, the utility model instructions that open day is on March 24th, 2010 discloses " gravity and buoyancy relation 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 passes the elongated portion of main body, thin masthead end is provided with ball float, thin bar bottom is provided with stopper, drive stopper during the ball float come-up, 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 effect is obvious, 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 deficiencies such as, operating difficulties loaded down with trivial details at existing gravity and the global design of buoyancy relation demonstration instrument, demonstration weak effect, provides that a kind of global design is simpler, operation is easier, the gravity and the buoyancy relation demonstration instrument of demonstration better effects if.
The purpose of this utility model realizes by following technological means: a kind of gravity and buoyancy relation demonstration instrument, include and be provided with ball float, sink-float device in transparent container, the container, the bottom center of described container also is provided with gas-filled tube, and gas-filled tube connects the outer air pump of container by wireway; Described ball float lower end connects the piston on sink-float device top by a montant.
Described ball float is set to seal hollow ellipsoid.
Described sink-float device is set to transparent hemisphere or mostly individual spheroid.
Compared with prior art the utlity model has following tangible advantage: this gravity can be operated the relation of demonstrating gravity and buoyancy more easily with the buoyancy relation demonstration instrument, more help helping the student to understand the physics classroom instruction and gain knowledge, whole result of use is better.
Description of drawings
Fig. 1 is a 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:
A kind of gravity as shown in Figure 1 and buoyancy relation demonstration instrument include and are provided with ball float 2, sink-float device 4 in transparent container 1, the container 1, and the bottom center of described container 1 also is provided with gas-filled tube 5, the air pump 7 that gas-filled tube 5 connects outside the container 1 by wireway 6; Described ball float 2 lower ends connect the piston 3 on sink-float device 4 tops by a montant.Be provided with 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 earlier 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, and when it arrives the bottom of container 1, opens the switch of air pump 7, air pump 7 will pass through wireway 6, gas-filled tube 5 is inflated in sink-float device 4, thereby discharge its inner water, and then the buoyancy of the device 4 that causes rising and falling is greater than gravity, sink-float device 4 begins come-up, when ball float 2 surfaces, piston 3 is controlled by ball float 2, can open piston 3, like this, gas in the sink-float device 4 will be discharged in the air from piston 3, thereby the gravity that causes sink-float device 4 is greater than buoyancy, and sink-float device 4 begins to descend.
Described ball float 2 is set to seal hollow ellipsoid.Be provided with like this, increase buoyancy of the present utility model that can be big is as far as possible strengthened the demonstration effect.
Described sink-float device 4 is set to transparent hemisphere or mostly individual spheroid.Being provided with 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 relation 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 thereto; 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. gravity and buoyancy relation demonstration instrument, include and be provided with ball float (2), sink-float device (4) in transparent container (1), the container (1), it is characterized in that: the bottom center of described container (1) also is provided with gas-filled tube (5), and gas-filled tube (5) connects the outer air pump (7) of container (1) by wireway (6); Described ball float (2) lower end connects the piston (3) on sink-float device (4) top by a montant.
2. a kind of gravity according to claim 1 and buoyancy relation demonstration instrument is characterized in that: described ball float (2) is set to seal hollow ellipsoid.
3. a kind of gravity according to claim 1 and buoyancy relation demonstration instrument is characterized in that: described sink-float device (4) is set to transparent hemisphere or mostly individual spheroid.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200385881U CN201927251U (en) | 2011-02-10 | 2011-02-10 | Gravity and buoyancy relation demonstrating instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200385881U CN201927251U (en) | 2011-02-10 | 2011-02-10 | Gravity and buoyancy relation demonstrating instrument |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201927251U true CN201927251U (en) | 2011-08-10 |
Family
ID=44431089
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011200385881U Expired - Fee Related CN201927251U (en) | 2011-02-10 | 2011-02-10 | Gravity and buoyancy relation demonstrating instrument |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201927251U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103996330A (en) * | 2014-04-21 | 2014-08-20 | 成都科创佳思科技有限公司 | Buoyancy demonstration device |
-
2011
- 2011-02-10 CN CN2011200385881U patent/CN201927251U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103996330A (en) * | 2014-04-21 | 2014-08-20 | 成都科创佳思科技有限公司 | Buoyancy demonstration device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| WO2008039884A3 (en) | Systems and methods using gravity and buoyancy for producing energy | |
| CN201927251U (en) | Gravity and buoyancy relation demonstrating instrument | |
| CN202758520U (en) | A demonstrator used for demonstrating relation between gravity and buoyancy | |
| CN209281706U (en) | A kind of portable physics teaching laboratory apparatus | |
| KR101357697B1 (en) | A submarine structure for science teaching | |
| CN201532722U (en) | Air buoyancy demonstration instrument | |
| CN206601866U (en) | A kind of physics teaching buoyancy size ocular demonstration device | |
| CN201429920Y (en) | Gravity and buoyancy relationship demonstration instrument | |
| CN207541820U (en) | A kind of buoyancy demonstration device for physical teaching purpose | |
| CN203310663U (en) | Automatic undisturbed sampler of underwater sediment | |
| CN204143713U (en) | The all-round exploring instrument of buoyancy factor | |
| CN207946967U (en) | A kind of submarine simulator | |
| CN202362984U (en) | Demonstration instrument for water spray phenomenon inside negative air pressure flask | |
| CN203397597U (en) | Apparatus for demonstrating cow automatic water fountain by utilizing communicating vessel | |
| CN206003405U (en) | A kind of buoyancy teaching demonstration lifting buoy | |
| CN206003406U (en) | A kind of buoyancy teaching demonstration apparatus | |
| CN203294581U (en) | Folded soft body water storing container | |
| CN201629077U (en) | Buoyancy principle demonstrator | |
| CN202677679U (en) | Buoyancy demonstrating instrument for physical experiment | |
| CN203085025U (en) | Swim bladder function demonstration device | |
| CN203799542U (en) | Buoyancy demonstration device | |
| CN204697048U (en) | Field rapid communication expanding unit | |
| CN202976609U (en) | Buoyant force demonstration device for physics teaching | |
| CN203070655U (en) | Water plant oxygen-releasing experiment apparatus | |
| CN203689779U (en) | Liquid density and buoyancy testing apparatus |
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: 20110810 Termination date: 20120210 |