CN206741788U - A kind of teaching Buoyancy demonstration instrument - Google Patents
A kind of teaching Buoyancy demonstration instrument Download PDFInfo
- Publication number
- CN206741788U CN206741788U CN201720204126.XU CN201720204126U CN206741788U CN 206741788 U CN206741788 U CN 206741788U CN 201720204126 U CN201720204126 U CN 201720204126U CN 206741788 U CN206741788 U CN 206741788U
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- CN
- China
- Prior art keywords
- cup
- cavity
- side wall
- glass tube
- wall
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Abstract
The utility model discloses a kind of teaching Buoyancy demonstration instrument,Including cup,Two balls and glass tube,The inside of cup sidewalls and bottom are internally provided with interconnected cavity,Bottom inside cup is provided with the round tube hole being connected with cavity,The diameter of round tube hole is less than the diameter of ball,The side wall of left side cup is provided with regulating bolt,The screw rod of regulating bolt sequentially passes through the lateral wall of cup sidewalls,Cavity,Madial wall is simultaneously extended to inside cup,The bottom of the side wall of right side cup sets tapping bolt,The screw rod of tapping bolt passes through the lateral wall of cup sidewalls and extended in the cavity of bottom of cup,Glass tube side wall is fixedly connected by connecting pole with cup inwall,Glass tube it is upper,Lower surface has been covered each by one layer of rubber membrane,The utility model is simple in construction,It is easy to operate,Being capable of intuitively demonstrating floating force producing cause.
Description
Technical field
It the utility model is related to tutor auxiliary platform appliance technology, and in particular to a kind of teaching Buoyancy demonstration instrument.
Background technology
At present, in the teaching of physics floating force, buoyancy Producing reason be teaching in a difficult point, the teaching now used
Instrument is extremely short come the buoyancy generating cause whole process time demonstrated, and student can not see process caused by buoyancy clearly in a short time
Cause experiment effect poor, and only lean on theory analysis, understanding of the student to buoyancy generating cause is acquired a certain degree of difficulty.
The content of the invention
The purpose of this utility model is to provide a kind of simple in construction, easy to operate and intuitively demonstrating floating force can produced
A kind of teaching Buoyancy demonstration instrument of reason.
To achieve the above object, the utility model provides following technical scheme：A kind of teaching Buoyancy demonstration instrument, its feature
It is：Including two balls for holding the cup of ball, being positioned in cup and glass tube, the inside of the cup sidewalls
With the interconnected cavity that is internally provided with of bottom, the bottom inside the cup is provided with the circle being connected with cavity and led to
Hole, the diameter of the round tube hole are less than the diameter of ball, and the side wall of the left side cup is provided with regulating bolt, the regulation
The screw rod of bolt sequentially passes through the lateral walls of cup sidewalls, cavity, madial wall and extended to inside cup, the right side cup
The bottom of side wall sets tapping bolt, and the screw rod of the tapping bolt passes through the lateral wall of cup sidewalls and extends to bottom of cup
Cavity in, the glass tube side wall is fixedly connected by connecting pole with cup inwall, and the upper and lower surface of glass tube is covered each by
There is one layer of rubber membrane, the rubber membrane surface is parallel with bottom of cup.
It is further preferred that the bottom of cup is provided for the square platform of support cup, the bottom of square platform
Four edges are provided with sucker.
It is further preferred that the left side side wall of the cup is provided with handle.
The beneficial effects of the utility model：
1. it is simple in construction, practical easy to use, it is intuitively obvious using two ball demonstrating effects, can intuitively it demonstrate
Buoyancy generating cause, it is impressive.
2. experimental principle is explained further for the cuboid of rubber membrane below using upper, abstract buoyancy is set to become specific
Change.
3. reducing the contingency and error property of classroom experiment, give teacher and preferably impart knowledge to students deduction effect.
Brief description of the drawings
Fig. 1 is structural representation of the present utility model.
Drawing explanation：1st, ball, 2, cup, 3, glass tube, 4, cavity, 5, round tube hole, 6, regulating bolt, 7, outside
Wall, 8, madial wall, 9, tapping bolt, 10, square platform, 11, sucker, 12, handle, 13, rubber membrane, 14, connecting pole.
Embodiment
The technical solution of the utility model, a kind of teaching Buoyancy demonstration instrument is described in detail with reference to accompanying drawing, including holds rubber
The cup 2 of glueballs, two balls 1 being positioned in cup and glass tube 3, the inside of the cup sidewalls and the inside of bottom
It is provided with interconnected cavity 4, the bottom inside the cup is provided with the round tube hole 5 being connected with cavity, and the circle leads to
The diameter in hole is less than the diameter of ball, and the side wall of the left side cup is provided with regulating bolt 6, the screw rod of the regulating bolt
Sequentially pass through the lateral walls 7 of cup sidewalls, cavity, madial wall 8 and extend to inside cup, the bottom of the side wall of the right side cup
Portion sets tapping bolt 9, and the screw rod of the tapping bolt passes through the lateral wall of cup sidewalls and extends to the cavity of bottom of cup
In, the glass tube side wall is fixedly connected by connecting pole 14 with cup inwall, and the upper and lower surface of glass tube has been covered each by one
Layer rubber membrane 13, the rubber membrane surface are parallel with bottom of cup；The bottom of cup is provided for the square of support cup
Platform 10, four edges of the bottom of square platform are provided with sucker 11, can effectively fix square platform and cup, reduce
Caused error in experiment；The left side side wall of the cup is provided with handle 12, convenient that cup is taken.
Operation principle of the present utility model is as follows：Two beads are placed in cup, one of ball ball is placed on
On round tube hole, another ball is placed on bottom of cup, and water is then added into cup, will be floated in the ball of bottom of cup
Rise, be placed on small stone-dead on round tube hole, continue to add water in cup the rubber membrane 10cm higher than glass tube top at, twisting
In the termination of the screw rod of regulating bolt to cavity, the water in cup is now flowed into cavity, when water is injected into bottom of cup
Cavity, the position eventually arrived at as another ball, while rubber can then be floated by being placed on the ball ball of round tube hole position
Epithelium sinking degree is different, and the sinking degree of the rubber membrane of glass tube bottom is more than the sinking degree of top rubber membrane, can
Buoyancy is intuitively demonstrated out, after experiment terminates, back-outs tapping bolt, makes the bolt hole discharge of water from there in cavity, it is complete
Into whole experiment.
General principle of the present utility model, principal character and advantage has been shown and described above, it is new not departing from this practicality
On the premise of type spirit and scope, the utility model also has various changes and modifications, and these changes and improvements both fall within requirement and protected
The scope of the utility model of shield.
Claims (3)
1. a kind of teaching Buoyancy demonstration instrument, it is characterised in that including two for holding the cup of ball, being positioned in cup
Ball and glass tube, the inside of the cup sidewalls and bottom are internally provided with interconnected cavity, in the cup
The bottom in portion is provided with the round tube hole being connected with cavity, and the diameter of the round tube hole is less than the diameter of ball, left side cup
Side wall be provided with regulating bolt, the screw rod of the regulating bolt sequentially passes through the lateral wall of cup sidewalls, cavity, madial wall simultaneously
Extend to inside cup, the bottom of the side wall of right side cup sets tapping bolt, and the screw rod of the tapping bolt passes through cup side
The lateral wall of wall is simultaneously extended in the cavity of bottom of cup, and the glass tube side wall is fixed by connecting pole and cup inwall to be connected
Connect, the upper and lower surface of glass tube has been covered each by one layer of rubber membrane, and the rubber membrane surface is parallel with bottom of cup.
2. one kind teaching Buoyancy demonstration instrument according to claim 1, it is characterised in that：The bottom of cup is provided for
The square platform of support cup, four edges of the bottom of square platform are provided with sucker.
3. one kind teaching Buoyancy demonstration instrument according to claim 1, it is characterised in that：The left side side wall of the cup is set
It is equipped with handle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720204126.XU CN206741788U (en) | 2017-03-03 | 2017-03-03 | A kind of teaching Buoyancy demonstration instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720204126.XU CN206741788U (en) | 2017-03-03 | 2017-03-03 | A kind of teaching Buoyancy demonstration instrument |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206741788U true CN206741788U (en) | 2017-12-12 |
Family
ID=60557095
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720204126.XU Expired - Fee Related CN206741788U (en) | 2017-03-03 | 2017-03-03 | A kind of teaching Buoyancy demonstration instrument |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206741788U (en) |
-
2017
- 2017-03-03 CN CN201720204126.XU patent/CN206741788U/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: 20171212 Termination date: 20190303 |