CN206516193U - Buoyancy, gravity apparatus for demonstrating - Google Patents
Buoyancy, gravity apparatus for demonstrating Download PDFInfo
- Publication number
- CN206516193U CN206516193U CN201621422864.3U CN201621422864U CN206516193U CN 206516193 U CN206516193 U CN 206516193U CN 201621422864 U CN201621422864 U CN 201621422864U CN 206516193 U CN206516193 U CN 206516193U
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- CN
- China
- Prior art keywords
- buoyancy
- gravity
- bucket
- lid
- demonstrating
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- 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.)
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Abstract
The utility model discloses a kind of buoyancy, gravity apparatus for demonstrating, bucket is held including open top, it is described to hold the buoyancy bucket that sealing on barrel bottom wall is fixed with open top, the bottom uniform ring of the buoyancy barrel side wall is furnished with multiple inlet openings, the top side detachable formula of buoyancy bucket is sealed and installed with buoyancy lid, the buoyancy, which is covered, offers venthole, the buoyancy bucket top is provided with gravity tank, weights are provided with the gravity tank, the bottom of the gravity tank is provided with gravity lid, each venthole that the gravity covers correspondence buoyancy lid is provided with kelly, the internal diameter that the external diameter of the kelly is less than venthole makes to form outlet gap between the two, the periphery of the gravity lid lower surface and the periphery of buoyancy cap upper surface can in the presence of gravity tank palette.
Description
Technical field
The utility model is related to a kind of buoyancy, gravity apparatus for demonstrating.
Background technology
Physics is basically the science of experiment, and any physics theory is abstracted simultaneously from experimental phenomena
Will be by experimental check.Phenomenon is the root of physics, is an effective approach by observing phenomenon come learning physicses, has
A little phenomenons, not by experimental demonstration, it is difficult to allow student to form clearly physical image.Lecture experiment, which can be played, excites student emerging
Interest, promotion student thinking, effect of the intensification student to the understanding of relevant knowledge.One excellent lecture experiment is using instrument as branch
Post, instrument is have left, demonstration and experiment can not just be carried out, and can only talk about stratagems on paper, therefore dexterously conceive and develop demonstration
Teaching aid, with important moral and application value.In physics teaching, the pass between the generation of buoyancy and buoyancy and gravity
System, it is difficult to go description with language, student can not have visual impression, can only remove rational learning by the understandability of oneself, easily
Student is produced fear of difficulty, be unfavorable for the study of physics, at present also without between the specific demonstrating floating force of suitable teaching aid, gravity
Relation.
The content of the invention
The technical problems to be solved in the utility model, which is to provide, a kind of demonstrates gravity and buoyancy, the gravity of buoyancy relation are drilled
Showing device.
In order to solve the above technical problems, the utility model include open top hold bucket, it is described hold it is close on barrel bottom wall
Buoyancy bucket of the sealing equipped with open top, the bottom uniform ring of the buoyancy barrel side wall is furnished with multiple inlet openings, the buoyancy bucket
Top side detachable formula be sealed and installed with buoyancy lid, the buoyancy is covered offers venthole, and the buoyancy bucket top is provided with
Weights are provided with gravity tank, the gravity tank, the bottom of the gravity tank is provided with gravity lid, and the gravity covers correspondence
Each venthole of buoyancy lid is provided with kelly, and the external diameter of the kelly makes to be formed between outlet between the two less than the internal diameter of venthole
Gap, the periphery of the gravity lid lower surface and the periphery of buoyancy cap upper surface can in the presence of gravity tank palette.
The internal diameter for holding bucket gradually increases from bottom to top.
The top of the gravity tank is provided with pressing plate, and the top surface of the pressing plate is fixed with depression bar.
The top of the depression bar is fixed with horizontally disposed cross bar, and the two ends correspondence of the cross bar, which is installed on, holds a barrel top surface
In the deep gouge of upper setting, the length of the cross bar, which is less than, holds the external diameter of bucket, more than the internal diameter for holding bucket.
The lower surface of the gravity lid is provided with groove, and the kelly is arranged on the bottom surface of groove.
Interval is fixed with multiple shims in the gravity tank, and gravity barrel cavity is divided into multiple counterweights by multiple shims
Chamber, the weights are arranged on counterweight intracavitary.
It is arranged with positioning hole on the top surface of the buoyancy lid, the gravity covers correspondence positioning hole provided with can be caught in positioning
The locating rod in hole.
The buoyancy lid spiral shell is provided with sealing gasket on buoyancy bucket between buoyancy lid and the buoyancy bucket.
After said structure, the utility model is by setting buoyancy bucket and gravity tank, and buoyancy bucket bottom sets inlet opening,
Buoyancy, which is covered, opens up venthole, gravity lid and buoyancy lid perimetral tight laminating, to hold pour into water in bucket when, water enters from inlet opening
Enter in buoyancy bucket, the gas in buoyancy bucket is gradually gradually increased by the pressure, gas compression, gas pressure of water, when holding bucket
When interior hydraulic pressure is consistent with gas pressure in buoyancy bucket, water cannot be introduced into buoyancy bucket, when hydraulic pressure gradually increases, in buoyancy bucket
Gas, from venthole discharge, is produced upward thrust, by changing gravity by the pressure of external water to gravity tank while discharge
The weight of weights, can observe when gravity tank floats in the presence of gas in bucket, thus observe gravity and buoyancy it
Between relation, and as the liquid level for holding inner bucket water changes, the time that gravity tank floats can also change therewith, and water is more, liquid level is high
When, the pressure suffered by buoyancy bucket is big, and the time that gas is compressed shortens, and gravity tank floatation time also shortens therewith, consequently facilitating
Intuitively observe buoyancy generation, and gravity and buoyancy relation, make physical principle more lively, improve student study it is emerging
Interest, also makes student fully carry out thinking activities in experimentation, student is actively studied intensively study in learning process.
Brief description of the drawings
Below in conjunction with the accompanying drawings and embodiment is described in further detail to the utility model：
Fig. 1 is structural representation of the present utility model；
Fig. 2 is the structural representation that Fig. 1 is overlooked；
Fig. 3 is the structural representation of buoyancy bucket and gravity tank.
Embodiment
As shown in Figure 1 to Figure 3, buoyancy, gravity apparatus for demonstrating include the outer surface for holding bucket 1, holding bucket 1 of open top
Graduation mark is provided with, the internal diameter for holding bucket 1 gradually increases from bottom to top, that is, holds bucket 1 for enlarging shape, be easy to putting for other devices
Put and install.The buoyancy bucket 2 that sealing on the bottom wall of bucket 1 is fixed with open top is held, buoyancy bucket 2 is cylindrical, buoyancy 2 side walls of bucket
Multiple inlet openings 21 are furnished with close to its bottom even ring, and the top side detachable formula of buoyancy bucket 2 is sealed and installed with buoyancy lid, this reality
With the new middle spiral shell of buoyancy lid 22 on buoyancy bucket 2, to improve the sealing connected between buoyancy lid 22 and buoyancy bucket 2, floating
It is pressed between power lid 22 and buoyancy bucket 2 on sealing gasket 4, buoyancy lid 22 and offers multiple ventholes 23, the top of buoyancy bucket 2 is provided with
Gravity tank 3 is also cylindrical in gravity tank 3, the utility model, and the external diameter of gravity tank 3 is consistent with the external diameter of buoyancy bucket 2, gravity
Weights 32 are provided with bucket 3, for convenience of regulation gravity tank 3 weight of itself, interval is fixed with multiple shims in gravity tank 3
31, the inner chamber of gravity tank 3 is divided into multiple counterweight chambers by multiple shims 31, and weights are arranged on counterweight intracavitary, can when using
Approrpiate wts and the weights of quantity are placed, the relation between gravity and buoyancy is shown with this.
The bottom opening of gravity tank 3 is easy to place weights, and the sealed bottom of gravity tank 3 is provided with gravity lid 33, this reality
With the new middle spiral shell of gravity lid 33 mounted in the bottom of gravity tank 3 so as to by its bottom lock, external diameter and the buoyancy lid 22 of gravity lid 33
External diameter is consistent, and each venthole that the lower surface of gravity lid 33 is provided with correspondence buoyancy lid 22 on groove 34, the bottom surface of groove 34 is set
There is kelly 35, the external diameter of kelly 35 makes to form outlet gap between the two less than the internal diameter of venthole, i.e. the setting position of groove 34
Put the whole region that buoyancy lid 22 just is set into venthole to cover, make the air accumulation of the discharge of buoyancy bucket 2 at groove 34, from
And gas is preferably produced upward power to gravity tank 3.In the present embodiment in the case where not applying pressure, under gravity lid 33
The periphery on surface and the periphery of the upper surface of buoyancy lid 22 can in the presence of gravity tank 3 palette, prevent the gas in buoyancy bucket 2
Body is escaped from the periphery of buoyancy lid 22 and gravity lid 33.For ease of the placement of gravity tank 3, symmetrically set on the top surface of buoyancy lid 22
There is correspondence positioning hole on positioning hole, gravity lid 33 provided with the locating rod 36 of positioning hole can be caught in, will need to only determine when placing gravity tank 3
In the bar insertion positioning hole of position, kelly 35 can be inserted into corresponding venthole, easy for installation.
The top of gravity tank 3 can be fitted in the pressing plate 5 at the top of gravity tank 3 provided with its bottom surface, and the top surface of pressing plate 5 is fixedly mounted with
The depression bar 6 of setting is stretched on having, the top of depression bar 6 is fixed with horizontally disposed cross bar 7, and the two ends correspondence of cross bar 7, which is installed on, to be held
In the deep gouge set on 1 top surface of bucket, the length of cross bar 7, which is less than, holds the external diameter of bucket 1, more than the internal diameter for holding bucket 1.
Principle of the present utility model is：Buoyancy refers to object in a fluid, and each surface is by the difference of Fluid pressure, the side of buoyancy
To with gravity direction on the contrary, straight up；The object pressure that lower surface is subject in a liquid is more than object upper surface in a liquid
The pressure being subject to, so making a concerted effort for the upward-F of F downwards, reason is that liquid internal has pressure to all directions, then on object
An its downward pressure is given in surface by liquid, and one by liquid to it of object lower upwards pressure；By
In in same liquid, depth is bigger, and pressure is bigger, so the pressure that object lower is subject to clearly is more than object upper surface
The pressure being subject to.
When being tested, seal the top of buoyancy bucket 2 on buoyancy bucket 2 on the spiral shell of buoyancy lid 22, by matching somebody with somebody for Suitable weight
Weight counterweight is caught in suitable counterweight intracavitary, and gravity lid 33 is sealed into spiral shell on gravity tank 3, is then placed on gravity tank 3 floating
On power lid 22, make gravity lid 33 and the relative positioning of buoyancy lid 22 in the locating rod insertion positioning hole on gravity lid 33, so that card
Bar 35 is inserted in corresponding venthole, under the Action of Gravity Field of gravity tank 3, gravity lid 33 and the laminating of the perimetral tight of buoyancy lid 22, so
Pressing plate 5 is fitted in the top of gravity tank 3 afterwards, the two ends of cross bar 7 are stuck in the deep gouge for holding the top of bucket 1, then to holding bucket 1
Interior pouring submerges gravity tank 3 below liquid level, and cross bar 7 is tightly suppressed with hand-tight, and now pressure is smaller in buoyancy bucket 2, and water is from water inlet
Hole 21 enters in buoyancy bucket 2, and the gas in buoyancy bucket 2 is gradually gradually increased by the pressure, gas compression, gas pressure of water,
When holding that gas pressure is consistent in hydraulic pressure and buoyancy bucket 2 in bucket 1, water cannot be introduced into buoyancy bucket 2, unclamps cross bar 7, will press-fit
Plate 5 is taken out, buoyancy bucket 2 in gas by external water pressure, from venthole discharge, gravity tank 3 is produced while discharge to
On thrust, by changing the weight of weights in gravity tank 3, can observe gravity tank 3 when in the presence of gas float
Rise, so that the relation between gravity and buoyancy is observed, and as the liquid level for holding water in bucket 1 changes, the time that gravity tank 3 floats
Also it can change therewith, when water is more, liquid level is high, the pressure suffered by buoyancy bucket 2 is big, and the time that gas is compressed shortens, and gravity tank 3 is floated
Rise the time also shorten therewith, consequently facilitating intuitively observe buoyancy generation, and gravity and buoyancy relation, make physical principle
It is more lively, the learning interest of student is improved, student is fully carried out thinking activities in experimentation, was learning student
Study is actively studied intensively in journey.
Preferred embodiment of the present utility model is the foregoing is only, the utility model is not limited to.Previous embodiment
The utility model is described in detail, for those skilled in the art, it still can be to foregoing each implementation
Technical scheme described in example is modified, or carries out equivalent substitution to which part technical characteristic.In every case it is new in this practicality
Within the scope of the inventive concept of type, any modification, equivalent substitution and improvements done etc. are all contained in protection of the present utility model
Within the scope of.
Claims (8)
1. a kind of buoyancy, gravity apparatus for demonstrating, it is characterized in that holding bucket including open top, described hold seals on barrel bottom wall
The buoyancy bucket of open top is fixed with, the bottom uniform ring of the buoyancy barrel side wall is furnished with multiple inlet openings, the buoyancy bucket
Top side detachable formula is sealed and installed with buoyancy lid, and the buoyancy is covered offers venthole, and the buoyancy bucket top is provided with weight
Weights are provided with power bucket, the gravity tank, the bottom of the gravity tank is provided with gravity lid, and it is floating that the gravity covers correspondence
Each venthole of power lid is provided with kelly, and the external diameter of the kelly makes to be formed between outlet between the two less than the internal diameter of venthole
Gap, the periphery of the gravity lid lower surface and the periphery of buoyancy cap upper surface can in the presence of gravity tank palette.
2. buoyancy according to claim 1, gravity apparatus for demonstrating, it is characterized in that the internal diameter for holding bucket from bottom to top by
It is cumulative big.
3. buoyancy according to claim 1, gravity apparatus for demonstrating, press-fit it is characterized in that the top of the gravity tank is provided with
Plate, the top surface of the pressing plate is fixed with depression bar.
4. buoyancy according to claim 3, gravity apparatus for demonstrating, set it is characterized in that the top of the depression bar is fixed with level
The cross bar put, the two ends correspondence of the cross bar is installed in the deep gouge for holding and being set on barrel top surface, and the length of the cross bar is less than
Hold the external diameter of bucket, more than the internal diameter for holding bucket.
5. buoyancy according to any one of claim 1 to 4, gravity apparatus for demonstrating, it is characterized in that under the gravity lid
Surface is provided with groove, and the kelly is arranged on the bottom surface of groove.
6. buoyancy according to claim 5, gravity apparatus for demonstrating, it is characterized in that in the gravity tank interval be fixed with it is multiple
Gravity barrel cavity is divided into multiple counterweight chambers by shim, multiple shims, and the weights are arranged on counterweight intracavitary.
7. buoyancy according to claim 5, gravity apparatus for demonstrating, it is characterized in that being arranged with the top surface of the buoyancy lid
Positioning hole, the gravity covers correspondence positioning hole provided with can be caught in the locating rod of positioning hole.
8. buoyancy according to claim 5, gravity apparatus for demonstrating, it is characterized in that the buoyancy lid spiral shell is on buoyancy bucket,
Sealing gasket is provided between buoyancy lid and the buoyancy bucket.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621422864.3U CN206516193U (en) | 2016-12-23 | 2016-12-23 | Buoyancy, gravity apparatus for demonstrating |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621422864.3U CN206516193U (en) | 2016-12-23 | 2016-12-23 | Buoyancy, gravity apparatus for demonstrating |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206516193U true CN206516193U (en) | 2017-09-22 |
Family
ID=59863232
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621422864.3U Expired - Fee Related CN206516193U (en) | 2016-12-23 | 2016-12-23 | Buoyancy, gravity apparatus for demonstrating |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206516193U (en) |
-
2016
- 2016-12-23 CN CN201621422864.3U patent/CN206516193U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170922 Termination date: 20171223 |