CN201163465Y - Qualitative and quantitative demonstration device for buoyant force phenomenon - Google Patents
Qualitative and quantitative demonstration device for buoyant force phenomenon Download PDFInfo
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- CN201163465Y CN201163465Y CNU2008200834696U CN200820083469U CN201163465Y CN 201163465 Y CN201163465 Y CN 201163465Y CN U2008200834696 U CNU2008200834696 U CN U2008200834696U CN 200820083469 U CN200820083469 U CN 200820083469U CN 201163465 Y CN201163465 Y CN 201163465Y
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Abstract
The utility model discloses a buoyancy phenomena qualitative and quantitative demonstrating device. The device comprises a table top, a quantitative demonstrating container, a qualitative demonstrating device, a floating ball I, a floating ball II, a connecting rod, a digital display, a sensor and a bracket panel. The quantitative demonstrating container and the qualitative demonstrating device are arranged on the table top. The quantitative demonstrating container is divided into a liquid adding cavity and a demonstrating cavity. The demonstrating cavity is divided into an upper cavity and a bottom cavity. Two pinholes are arranged between the upper cavity and the bottom cavity. The floating ball I and the floating ball II are respectively placed on the two pinholes. The liquid adding cavity and the bottom cavity are communicated through a communication opening. The upper end of the floating ball I is connected with the connecting rod. The connecting rod is connected with the sensor. The sensor is connected with the digital display. The sensor and the digital display are fixed on the bracket panel. The device has the advantages of compact and rational structure, convenient use, systematic, vivid and visual demonstration, having a buoyancy quantitative measurement function, and overall and profound comprehension of students, etc.
Description
Technical field
The utility model relates to a kind of Middle School Experiment Instrument, and is especially relevant with middle school physical experiment device buoyancy demonstrator.
Background technology
Law of buoyancy is one of basic contents of middle school physics, law of buoyancy experimental demonstration device also is one of basic experiment utensil of middle school physics, existing middle school law of buoyancy experimental demonstration device can help the student to understand the ultimate principle of buoyancy, but it is single also to exist structure, demonstrate not enough system, lively and directly perceived, the function that lacks the buoyancy quantitative measurement, the student understands the deep inadequately deficiency that waits.
Summary of the invention
It is reasonable that the purpose of this utility model provides a kind of compact conformation, easy to use, and demo system, lively and directly perceived possesses the function of buoyancy quantitative measurement, and the student understands deep qualitative and quantitative demonstrator for buoyancy phenomenon comprehensively.
For achieving the above object, the utility model is achieved through the following technical solutions.Qualitative and quantitative demonstrator for buoyancy phenomenon, comprise table top, quantitative Presentation Container, qualitative apparatus for demonstrating, ball float I, ball float II, connecting rod, digital indicator, sensor and support panel, quantitatively Presentation Container and qualitative apparatus for demonstrating are located on the table top, quantitatively Presentation Container is divided into and adds sap cavity and demonstration chamber, and the demonstration chamber is divided into epicoele and chamber, the end, is provided with two apertures between epicoele and chamber, the end, ball float I and ball float II respectively are placed on two apertures, add sap cavity and be communicated with by connected entrance with chamber, the end, ball float I upper end is connected with connecting rod, and connecting rod is connected with sensor, sensor is connected with digital indicator, and sensor and digital indicator are fixed on the support panel.
Described qualitative and quantitative demonstrator for buoyancy phenomenon, its qualitative apparatus for demonstrating comprises the transparent observing body, last rubber diaphragm, following rubber diaphragm, pointer, thin bar, hollow stem and locating support, last rubber diaphragm and following rubber diaphragm are divided into transparent observing body top and the bottom and are tightly connected with the transparent observing body, and hollow stem connects by hand steered cross bar, and the hollow stem lower end part is provided with air hole and is communicated with the transparent observing intracoelomic cavity, upper end open also communicates with external atmosphere pressure, thin bar is connected with following rubber diaphragm with last rubber diaphragm respectively up and down, and pointer is connected and perpendicular setting with thin bar, and thin bar penetrates in the locating support.
Described qualitative and quantitative demonstrator for buoyancy phenomenon is provided with through hole on the support panel, connecting rod one end is connected with ball float II upper end, and the other end passes through hole.
The utility model compared with prior art has following advantage: (one) is provided with qualitative apparatus for demonstrating, qualitative apparatus for demonstrating is put into water, pointer in the transparent observing body moves up, it is inequality can demonstrating the suffered hydraulic pressure of upper and lower rubber diaphragm intuitively, the existence of pressure difference is the reason that produces buoyancy, makes the buoyancy experiment lively more directly perceived; (2) be that sensor is connected with digital indicator, has realized the quantitative measurement of buoyancy, has deepened the understanding of student to the buoyancy ultimate principle greatly because ball float I upper end is connected with connecting rod, and connecting rod is connected with sensor; (3) be to be provided with ball float II to test simultaneously, when in adding sap cavity, pouring water, ball float II come-up when the water surface reach a certain height, the digital indicator that is connected with ball float I statistics have shown, the qualitative and quantitative demonstration is united two into one carry out simultaneously, the student influences deeply.
Description of drawings
Fig. 1 is the structural representation of the utility model qualitative and quantitative demonstrator for buoyancy phenomenon.
Fig. 2 is the structural representation of the qualitative apparatus for demonstrating of the utility model qualitative and quantitative demonstrator for buoyancy phenomenon.
Embodiment
Below in conjunction with accompanying drawing embodiment of the present utility model is described in further detail.
As shown in Figure 1, qualitative and quantitative demonstrator for buoyancy phenomenon, comprise table top 1, quantitative Presentation Container 2, qualitative apparatus for demonstrating 3, ball float I 4, ball float II 5, connecting rod 6, digital indicator 7, sensor 8 and support panel 9, quantitatively Presentation Container 2 and qualitative apparatus for demonstrating 3 are located on the table top 1, quantitatively Presentation Container 2 is divided into and adds sap cavity 10 and demonstration chamber 11, demonstration chamber 11 is divided into epicoele 12 and chamber, the end 13, between epicoele 12 and chamber, the end 13, be provided with two apertures 14, ball float I 4 and ball float II 5 respectively are placed on two apertures 14, adding sap cavity 10 is communicated with by connected entrance 15 with chamber, the end 13, ball float I 4 upper ends are connected with connecting rod 6, and connecting rod 6 is connected with sensor 8, and sensor 8 is connected with digital indicator 7, sensor 8 and digital indicator 7 are fixed on the support panel 9, be provided with through hole 23 on support panel 9, connecting rod 6 one ends are connected with ball float II 5 upper ends, and the other end passes through hole 23, as shown in Figure 2, qualitative apparatus for demonstrating 3 comprises transparent observing body 18, last rubber diaphragm 16, following rubber diaphragm 17, pointer 19, thin bar 20, hollow stem 21 and locating support 22, last rubber diaphragm 16 and following rubber diaphragm 17 are divided into transparent observing body 18 top and the bottom and are tightly connected with transparent observing body 18, hollow stem 21 connects by hand steered cross bar 25, hollow stem 21 lower end parts are provided with air hole 24 and are communicated with transparent observing body 18 inner chambers, and upper end open also communicates with external atmosphere pressure, and thin bar 20 is connected with following rubber diaphragm 17 with last rubber diaphragm 16 respectively up and down, pointer 19 is connected and perpendicular setting with thin bar 20, and thin bar 20 penetrates in the locating support 22.
During experiment, add entry to certain altitude in demonstration chamber 11, at this moment, ball float II 5 is non-rising, and the digital indicator 7 that ball float I 4 connects can demonstrate certain numerical value.When pouring water in adding sap cavity 10, water arrives chambeies, the end 13 by connected entrance 15, and when the water surface reach a certain height, ball float II 5 was subjected to the effect of following hydraulic pressure, when buoyancy during greater than the gravity of ball float II 5, and ball float II 5 come-ups; With the digital indicator that ball float I 4 is connected, numeral changes, and show that the buoyancy that ball float I 4 makes progress is increasing, and the energy quantitative measurement goes out the size of buoyancy.If qualitative apparatus for demonstrating 3 is put into the water that adds sap cavity 10 lightly, pointer 19 in the transparent observing body 18 moves up, the suffered hydraulic pressure of rubber diaphragm 17 is described down greater than the suffered hydraulic pressure of last rubber diaphragm 16, thereby the existence of further having verified pressure difference is the reason that produces buoyancy.
Claims (3)
1, a kind of qualitative and quantitative demonstrator for buoyancy phenomenon, comprise table top (1), quantitative Presentation Container (2) and qualitative apparatus for demonstrating (3), quantitatively Presentation Container (2) and qualitative apparatus for demonstrating (3) are located on the table top (1), it is characterized in that: it also comprises ball float I (4), ball float II (5), connecting rod (6), digital indicator (7), sensor (8) and support panel (9), quantitatively Presentation Container (2) is divided into and adds sap cavity (10) and demonstration chamber (11), demonstration chamber (11) is divided into epicoele (12) and chamber, the end (13), be provided with two apertures (14) between epicoele (12) and chamber, the end (13), ball float I (4) and ball float II (5) respectively are placed on two apertures (14), add sap cavity (10) and are communicated with by connected entrance (15) with chamber, the end (13), ball float I (4) upper end is connected with connecting rod (6), connecting rod (6) is connected with sensor (8), and sensor (8) is connected with digital indicator (7), and sensor (8) and digital indicator (7) are fixed on the support panel (9).
2, qualitative and quantitative demonstrator for buoyancy phenomenon according to claim 1, it is characterized in that: qualitative apparatus for demonstrating (3) comprises transparent observing body (18), last rubber diaphragm (16), following rubber diaphragm (17), pointer (19), thin bar (20), hollow stem (21) and locating support (22), last rubber diaphragm (16) and following rubber diaphragm (17) are divided into transparent observing body (18) top and the bottom and are tightly connected with transparent observing body (18), hollow stem (21) connects by hand steered cross bar (25), hollow stem (21) lower end part is provided with air hole (24) and is communicated with transparent observing body (18) inner chamber, upper end open also communicates with external atmosphere pressure, thin bar (20) is connected with following rubber diaphragm (17) with last rubber diaphragm (16) respectively up and down, and pointer (19) is connected and perpendicular setting with thin bar (20), and thin bar (20) penetrates in the locating support (22).
3, qualitative and quantitative demonstrator for buoyancy phenomenon according to claim 1 and 2 is characterized in that: be provided with through hole (23) on support panel (9), connecting rod (6) one ends are connected with ball float II (5) upper end, and the other end passes through hole (23).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200834696U CN201163465Y (en) | 2008-02-21 | 2008-02-21 | Qualitative and quantitative demonstration device for buoyant force phenomenon |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200834696U CN201163465Y (en) | 2008-02-21 | 2008-02-21 | Qualitative and quantitative demonstration device for buoyant force phenomenon |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201163465Y true CN201163465Y (en) | 2008-12-10 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008200834696U Expired - Fee Related CN201163465Y (en) | 2008-02-21 | 2008-02-21 | Qualitative and quantitative demonstration device for buoyant force phenomenon |
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| Country | Link |
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| CN (1) | CN201163465Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109599014A (en) * | 2019-01-26 | 2019-04-09 | 信阳师范学院 | A kind of buoyancy experiment device of physics teaching |
-
2008
- 2008-02-21 CN CNU2008200834696U patent/CN201163465Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109599014A (en) * | 2019-01-26 | 2019-04-09 | 信阳师范学院 | A kind of buoyancy experiment device of physics teaching |
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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: 20081210 |