CN208969937U - Buoyancy demonstrating device - Google Patents
Buoyancy demonstrating device Download PDFInfo
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- CN208969937U CN208969937U CN201721749180.9U CN201721749180U CN208969937U CN 208969937 U CN208969937 U CN 208969937U CN 201721749180 U CN201721749180 U CN 201721749180U CN 208969937 U CN208969937 U CN 208969937U
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- shell
- water tank
- tensiometer
- bracket
- lifting device
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Abstract
The utility model relates to a kind of buoyancy demonstrating devices, lifting device and air charging system are arranged on bracket, portion in the base is arranged in water tank, lifting device is located at right above water tank, and tensiometer is fixed on lifting device lower end, and the floating block includes shell, internal plug and sealing ring, upper shell is hung on tensiometer lower end by lifting rope, internal plug upper end is arranged inside the shell, sealing ring is arranged between internal plug upper end and shell, upper shell side is connect with air charging system.By buoyancy demonstrating device described in the utility model, structure is simple, easy to operate, can comprehensively verify Archimedes principle, vivid, keeps teaching not uninteresting, it can be readily appreciated that improving the quality of teaching.
Description
Technical field
The utility model relates to a kind of buoyancy demonstrating devices, belong to teaching aid technical field.
Background technique
Physics is to study the subject of the motion of matter most typically rule and substance basic structure.As taking the lead for natural science
Subject, physics research become greatly to universe, as low as all substances such as elementary particle most basic forms of motion and rule
The Research foundation of other each natural branch of science.Its theoretical construct makes full use of mathematics as oneself working language, with
It tests as the sole criterion for examining theoretical correctness, it is a current most accurate natural science subject, and buoyancy is physics
More important a part in teaching, when explaining Archimedes principle, many knowledge points can not be demonstrated using existing teaching aid, be made
It imparts knowledge to students uninteresting, influences quality of instruction.
Utility model content
According to the above-mentioned deficiencies in the prior art, being drilled technical problem to be solved by the utility model is: providing a kind of buoyancy
Showing device solves the problems in above-mentioned background technique.
Buoyancy demonstrating device described in the utility model, including water tank, floating block, lifting rope and tensiometer, it is characterised in that: also
Including pedestal, bracket, lifting device and air charging system, bracket is set, lifting device and air charging system are arranged at branch on pedestal
On frame, portion, lifting device are located at right above water tank in the base for water tank setting, and tensiometer is fixed on lifting device lower end, described
Floating block includes shell, internal plug and sealing ring, and upper shell is hung on tensiometer lower end by lifting rope, and internal plug upper end is arranged in shell
It is interior, sealing ring is set between internal plug upper end and shell, and upper shell side is connect with air charging system.
The water tank is transparent cabinet, is provided with graduation mark on water tank.Facilitate observation.
The water tank side opens up water outlet, and water outlet is arranged diversion pipe, liquid measure tool is arranged on the downside of diversion pipe.
It is convenient for measuring liquid discharge rate.
The liquid measure tool is graduated cylinder.
Heating device is arranged in the water tank bottom.Accelerate dissolution.
The lifting device includes shaft, turntable, handle and halliard, and shaft is arranged on bracket by bearing, shaft
Turntable is arranged in front end, handle is arranged at turntable one side edge, halliard upper end is wrapped in shaft, halliard lower end and tensiometer
Connection.Conveniently manually control lifting.
The air charging system includes air pump, tracheae and valve, and air pump is arranged on bracket, and air pump and shell are connected by tracheae
It connects, valve is set on tracheae.The volume of floating block is adjusted, the relationship of buoyancy and discharge rate is verified.
The tracheae is lightweight flexible pipe.Reduce the influence to floating block.
It is provided with graduation mark beyond the Great Wall in described.Determine the volume of floating block.
Compared with prior art, the utility model has the following beneficial effects:
By buoyancy demonstrating device described in the utility model, when carrying out buoyancy demonstration, water will be packed into water tank to out
At the mouth of a river, the floating block of known weight is hung to the lower end of tensiometer, rotating lifting gear submerges floating block in water, and observation is drawn
The registration of power meter and the liquid volume of discharge, and calculating verifying is recorded, the weight of floating block subtracts the registration of tensiometer, and you can get it
Then buoyancy calculates the quality of discharge liquid, open air pump and be inflated to floating block, be gradually increased the volume of floating block, record
Pulling force when floating block different size, and buoyancy is calculated, and the weight of discharge liquid, verified Archimedes principle；Continue
Sinking floating block and the registration for recording tensiometer, floating block are located at whether different depth has an impact to buoyancy, in the sinking of floating block
Cheng Zhong, that floating block is observed when reading measurement refers to whether changing, if floating block can be inflated by becoming smaller, it is ensured that front and back
Constancy of volume；Salt is added in water, and to heating water tanks, observes the registration record of tensiometer, and calculate buoyancy, observes with salt
The density of solution increases, the variation of buoyancy；Structure is simple, easy to operate, can comprehensively verify Archimedes principle, and image is raw
It is dynamic, keep teaching not uninteresting, it can be readily appreciated that improving the quality of teaching.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the utility model；
Fig. 2 is the structure prosperity schematic diagram of floating block.
In figure: 1, pedestal 2, bracket 3, water tank 3.1, water outlet 3.2, diversion pipe 3.3, heating device 4,
Floating block 4.1, shell 4.2, internal plug 4.3, sealing ring 5, lifting rope 6, tensiometer 7, lifting device 7.1, shaft
7.2, turntable 7.3, handle 7.4, halliard 8, air charging system 8.1, air pump 8.2, tracheae 8.3, valve 9,
Liquid measure tool
Specific embodiment
The utility model is described further with reference to the accompanying drawing:
Below by way of specific embodiment, the utility model is described in further detail, but not to limit the utility model, all
Within spirit of that invention and principle, any modification, equivalent replacement, improvement and so on should be included in the utility model
Within protection scope.
Embodiment
As shown in Figs. 1-2, the buoyancy demonstrating device, including water tank 3, floating block 4, lifting rope 5 and tensiometer 6, further include bottom
Bracket 2 is arranged on pedestal 1 in seat 1, bracket 2, lifting device 7 and air charging system 8, and lifting device 7 and air charging system 8 are arranged at
On bracket 2, the setting of water tank 3 is located at right above water tank 3 in 1 middle part of pedestal, lifting device 7, and tensiometer 6 is fixed on lifting device 7
Lower end, the floating block 4 include shell 4.1, internal plug 4.2 and sealing ring 4.3, and 4.1 upper end of shell is hung on tensiometer by lifting rope 5
6 lower ends, 4.2 upper end of internal plug are arranged in shell 4.1, and sealing ring 4.3, shell are arranged between 4.2 upper end of internal plug and shell 4.1
4.1 upper ends side are connect with air charging system 8.
In the present embodiment, the water tank 3 is transparent cabinet, is provided with graduation mark on water tank 3；3 side of water tank opens up
Diversion pipe 3.2 is arranged at water outlet 3.1, liquid measure tool 9 is arranged on the downside of diversion pipe 3.2 for water outlet 3.1；The liquid is surveyed
Amount tool 9 is graduated cylinder；Heating device 3.3 is arranged in 3 bottom of water tank；The lifting device 7 include shaft 7.1, turntable 7.2,
Handle 7.3 and halliard 7.4, shaft 7.1 are arranged on bracket 2 by bearing, and turntable 7.2, turntable is arranged in 7.1 front end of shaft
Handle 7.3 is set at 7.2 one side edges, and 7.4 upper end of halliard is wrapped in shaft 7.1,7.4 lower end of halliard and tensiometer 6
Connection；The air charging system 8 include air pump 8.1, tracheae 8.2 and valve 8.3, air pump 8.1 be arranged on bracket 2, air pump 8.1 with
Shell 4.1 is connected by tracheae 8.2, and valve 8.3 is arranged on tracheae 8.2；The tracheae 8.2 is lightweight flexible pipe；The internal plug 4.2
On be provided with graduation mark.
The advantages of basic principles and main features and the utility model of the utility model have been shown and described above.This
The technical staff of industry is retouched in above embodiments and description it should be appreciated that the present utility model is not limited to the above embodiments
That states merely illustrates the principles of the invention, and on the premise of not departing from the spirit and scope of the utility model, the utility model can also
There are various changes and modifications, these various changes and improvements fall within the scope of the claimed invention.The utility model is wanted
Protection scope is asked to be defined by the appending claims and its equivalent thereof.
Claims (6)
1. a kind of buoyancy demonstrating device, including water tank (3), floating block (4), lifting rope (5) and tensiometer (6), it is characterised in that: also wrap
Include pedestal (1), bracket (2), lifting device (7) and air charging system (8), bracket (2) be set on pedestal (1), lifting device (7) and
Air charging system (8) is arranged on bracket (2), and in the middle part of pedestal (1), lifting device (7) is located at water tank (3) for water tank (3) setting
Surface, tensiometer (6) are fixed on lifting device (7) lower end, and the floating block (4) includes shell (4.1), internal plug (4.2) and close
Seal (4.3), shell (4.1) upper end are hung on tensiometer (6) lower end by lifting rope (5), and internal plug (4.2) upper end is arranged in shell
(4.1) in, sealing ring (4.3) are set between internal plug (4.2) upper end and shell (4.1), shell (4.1) upper end side and inflation fill
Set (8) connection.
2. buoyancy demonstrating device according to claim 1, it is characterised in that: the water tank (3) is transparent cabinet, water tank
(3) graduation mark is provided on.
3. buoyancy demonstrating device according to claim 1, it is characterised in that: water tank (3) side opens up water outlet
(3.1), diversion pipe (3.2) are set at water outlet (3.1), liquid measure tool (9) is set on the downside of diversion pipe (3.2).
4. buoyancy demonstrating device according to claim 3, it is characterised in that: heating device is arranged in water tank (3) bottom
(3.3).
5. buoyancy demonstrating device according to claim 1, it is characterised in that: the lifting device (7) includes shaft
(7.1), turntable (7.2), handle (7.3) and halliard (7.4), shaft (7.1) are arranged on bracket (2) by bearing, shaft
(7.1) turntable (7.2) are arranged in front end, handle (7.3) are arranged at turntable (7.2) one side edge, halliard (7.4) upper end is wrapped in
In shaft (7.1), halliard (7.4) lower end is connect with tensiometer (6).
6. buoyancy demonstrating device according to claim 1, it is characterised in that: the air charging system (8) includes air pump
(8.1), tracheae (8.2) and valve (8.3), air pump (8.1) are arranged on bracket (2), and air pump (8.1) passes through with shell (4.1)
Tracheae (8.2) connects, and valve (8.3) are arranged on tracheae (8.2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721749180.9U CN208969937U (en) | 2017-12-15 | 2017-12-15 | Buoyancy demonstrating device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721749180.9U CN208969937U (en) | 2017-12-15 | 2017-12-15 | Buoyancy demonstrating device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208969937U true CN208969937U (en) | 2019-06-11 |
Family
ID=66746243
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721749180.9U Active CN208969937U (en) | 2017-12-15 | 2017-12-15 | Buoyancy demonstrating device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208969937U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113203654A (en) * | 2021-04-16 | 2021-08-03 | 同济大学 | Detection method for self-shrinkage of cement-based material |
-
2017
- 2017-12-15 CN CN201721749180.9U patent/CN208969937U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113203654A (en) * | 2021-04-16 | 2021-08-03 | 同济大学 | Detection method for self-shrinkage of cement-based material |
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