CN204596274U - Buoyancy demonstrating device - Google Patents
Buoyancy demonstrating device Download PDFInfo
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- CN204596274U CN204596274U CN201520306759.2U CN201520306759U CN204596274U CN 204596274 U CN204596274 U CN 204596274U CN 201520306759 U CN201520306759 U CN 201520306759U CN 204596274 U CN204596274 U CN 204596274U
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- casing
- ball float
- traction rope
- counterweight
- main box
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Abstract
The utility model discloses a kind of buoyancy demonstrating device, it comprises main box (11), described main box (11) is divided into the first casing (1) by dividing plate, second casing (2) and the 3rd casing (3), the top of described main box (11) is provided with support body (4), described support body (4) is upper and described first casing (1), the top of the second casing (2) and the 3rd casing (3) is hung with three spring balances (5) respectively, the bottom of each described spring balance (5) is separately installed with by the first traction rope (12) and connects reed (6), the upper hasp of each connection reed (6) has the second traction rope (10) doubling as outlet passageway, each described second traction rope (10) is each passed through a counterweight (7) and is communicated with the ball float (8) of an attached cavity, the bottom of each described ball float (8) is respectively equipped with the electronic ejectment water pump (9) be communicated with described ball float (8) cavity, adopt said structure, achieve structure simple, can directly observe, be convenient to understand, the good acceptant effect of results of learning.
Description
Technical field
The utility model relates to a kind of demonstration device for teaching, particularly relates to a kind of buoyancy demonstration device for physical teaching purpose.
Background technology
Teacher is when teaching buoyancy one and saving, and be immersed in the object in liquid, all can be subject to the effect of gravity and buoyancy in different liquids, when buoyancy is greater than gravity, object floats over liquid surface; When buoyancy equals gravity, object floats on a liquid; When buoyancy is less than gravity, object sinks in a liquid, adopts this teaching method not understand the principle that buoyancy produces and student should not be allowed to accept, the effect of impact study.
Summary of the invention
It is simple that the purpose of this utility model is to provide a kind of structure, can directly observe, and is convenient to understand, the good acceptant buoyancy demonstrating device of results of learning.
The technical solution of the utility model is a kind of buoyancy demonstrating device, it comprises main box 11, it is characterized in that: described main box 11 is divided into the first casing 1 by dividing plate, second casing 2 and the 3rd casing 3, the top of described main box 11 is provided with support body 4, on described support body 4 and at described first casing 1, the top of the second casing 2 and the 3rd casing 3 is hung with three spring balances 5 respectively, the bottom of each described spring balance 5 is separately installed with by the first traction rope 12 and connects reed 6, on each connection reed 6, hasp has the second traction rope 10 doubling as outlet passageway, each described second traction rope 10 is each passed through a counterweight 7 and is communicated with the ball float 8 of an attached cavity, the bottom of each described ball float 8 is respectively equipped with the electronic ejectment water pump 9 be communicated with described ball float 8 cavity.
The technical solution of the utility model also has described first casing 1, second casing 2 to be respectively equipped with the outside of the 3rd casing 3 fluid box 13 be connected with the 3rd casing 3 with described first casing 1, second casing 2.
The beneficial effects of the utility model are that main box 11 is divided into the first casing 1 by dividing plate, second casing 2 and the 3rd casing 3, the top of described main box 11 is provided with support body 4, on described support body 4 and at described first casing 1, the top of the second casing 2 and the 3rd casing 3 is hung with three spring balances 5 respectively, the bottom of each described spring balance 5 is separately installed with by the first traction rope 12 and connects reed 6, on each connection reed 6, hasp has the second traction rope 10 doubling as outlet passageway, each described second traction rope 10 is each passed through a counterweight 7 and is communicated with the ball float 8 of an attached cavity, the bottom of each described ball float 8 is respectively equipped with the electronic ejectment water pump 9 be communicated with described ball float 8 cavity, during use, to be air in the first casing 1, aqueous solution is injected in second casing 2, saturated aqueous common salt is injected in 3rd casing 3, then the counterweight 7 of equivalent weight and ball float 8 are snapped over respectively by the second traction rope 10 and be connected reed 6, now can observe counterweight 7 in the first casing 1 and ball float 8 position minimum, the reading of spring balance 5 is maximum, counterweight 7 in 3rd casing 3 and ball float 8 position the highest, the reading of spring balance 5 is minimum, namely illustrates, the counterweight 7 of equivalent weight is different with the buoyancy that ball float 8 is subject in different medium, and the buoyancy that the counterweight 7 in the 3rd casing 3 and ball float 8 are subject to is maximum, in addition, can also counterweight 7 and ball float 8 be placed in the second casing 2 of arbitrary same liquid medium, opening electronic ejectment water pump 9 makes the liquid medium of the second casing 2 enter in ball float 8 cavity, and when buoyancy is greater than the gravity of counterweight 7 and ball float 8, counterweight 7 and ball float 8 float over liquid surface, when buoyancy equals the gravity of counterweight 7 and ball float 8, counterweight 7 and ball float 8 float on a liquid, when buoyancy is less than counterweight 7 and ball float 8 gravity, counterweight 7 and ball float 8 sink in a liquid, achieve structure so simple, can directly observe, and are convenient to understand, the good acceptant effect of results of learning.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model
1, first casing in Fig. 1, the 2, second casing, the 3, the 3rd casing, 4, support body, 5, spring balance, 6, connect reed, 7, counterweight, 8, ball float, 9, electronic ejectment water pump, the 10, second traction rope, 11, main box, the 12, first traction rope, 13, fluid box.
Embodiment
According to Fig. 1, the utility model relates to a kind of buoyancy demonstrating device, it comprises main box 11, described main box 11 is divided into the first casing 1, second casing 2 and the 3rd casing 3 by dividing plate, first casing 1, second casing 2 and the outside of the 3rd casing 3 are respectively equipped with the fluid box 13 be connected with the 3rd casing 3 with described first casing 1, second casing 2, easily different liquid mediums can be injected each casing from fluid box 13; The top of described main box 11 is provided with support body 4, described support body 4 is hung with three spring balances 5 respectively on the top of described first casing 1, second casing 2 and the 3rd casing 3, the bottom of each described spring balance 5 is separately installed with by the first traction rope 12 and connects reed 6, on each connection reed 6, hasp has the second traction rope 10 doubling as outlet passageway, each described second traction rope 10 is each passed through a counterweight 7 and is communicated with the ball float 8 of an attached cavity, and the bottom of each described ball float 8 is respectively equipped with the electronic ejectment water pump 9 be communicated with described ball float 8 cavity; During use, to be air in the first casing 1, aqueous solution is injected in second casing 2, saturated aqueous common salt is injected in 3rd casing 3, then the counterweight 7 of equivalent weight and ball float 8 are snapped over respectively by the second traction rope 10 and be connected reed 6, now can observe counterweight 7 in the first casing 1 and ball float 8 position minimum, the reading of spring balance 5 is maximum; Counterweight 7 in 3rd casing 3 and ball float 8 position the highest, the reading of spring balance 5 is minimum, namely illustrates, the counterweight 7 of equivalent weight is different with the buoyancy that ball float 8 is subject in different medium, the buoyancy that counterweight 7 in the 3rd casing 3 and ball float 8 are subject to is maximum, can directly observe, and is convenient to understand; In addition, can also counterweight 7 and ball float 8 be directly placed in the second casing 2 of arbitrary same liquid medium, opening electronic ejectment water pump 9 makes the liquid medium of the second casing 2 enter in ball float 8 cavity, and when buoyancy is greater than the gravity of counterweight 7 and ball float 8, counterweight 7 and ball float 8 float over liquid surface; When buoyancy equals the gravity of counterweight 7 and ball float 8, counterweight 7 and ball float 8 float on a liquid; When buoyancy is less than counterweight 7 and ball float 8 gravity, counterweight 7 and ball float 8 sink in a liquid, achieve structure so simple, can directly observe, and are convenient to understand, the good acceptant effect of results of learning.
Claims (2)
1. a buoyancy demonstrating device, it comprises main box (11), it is characterized in that: described main box (11) is divided into the first casing (1) by dividing plate, second casing (2) and the 3rd casing (3), the top of described main box (11) is provided with support body (4), described support body (4) is upper and described first casing (1), the top of the second casing (2) and the 3rd casing (3) is hung with three spring balances (5) respectively, the bottom of each described spring balance (5) is separately installed with by the first traction rope (12) and connects reed (6), the upper hasp of each connection reed (6) has the second traction rope (10) doubling as outlet passageway, each described second traction rope (10) is each passed through a counterweight (7) and is communicated with the ball float (8) of an attached cavity, the bottom of each described ball float (8) is respectively equipped with the electronic ejectment water pump (9) be communicated with described ball float (8) cavity.
2. buoyancy demonstrating device according to claim 1, is characterized in that: described first casing (1), the second casing (2) and the outside of the 3rd casing (3) are respectively equipped with the fluid box (13) be connected with the 3rd casing (3) with described first casing (1), the second casing (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520306759.2U CN204596274U (en) | 2015-05-06 | 2015-05-06 | Buoyancy demonstrating device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520306759.2U CN204596274U (en) | 2015-05-06 | 2015-05-06 | Buoyancy demonstrating device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204596274U true CN204596274U (en) | 2015-08-26 |
Family
ID=53932404
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520306759.2U Expired - Fee Related CN204596274U (en) | 2015-05-06 | 2015-05-06 | Buoyancy demonstrating device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204596274U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109767675A (en) * | 2019-03-05 | 2019-05-17 | 西京学院 | A kind of physical teaching demonstration device |
| CN111589182A (en) * | 2020-05-20 | 2020-08-28 | 江西樟乡天然冰片股份有限公司 | Ruilongxiang prepared from different purity borneol and preparation method thereof |
| CN113096500A (en) * | 2021-04-14 | 2021-07-09 | 十一维度（厦门）网络科技有限公司 | A teaching presentation device for wisdom education |
-
2015
- 2015-05-06 CN CN201520306759.2U patent/CN204596274U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109767675A (en) * | 2019-03-05 | 2019-05-17 | 西京学院 | A kind of physical teaching demonstration device |
| CN111589182A (en) * | 2020-05-20 | 2020-08-28 | 江西樟乡天然冰片股份有限公司 | Ruilongxiang prepared from different purity borneol and preparation method thereof |
| CN113096500A (en) * | 2021-04-14 | 2021-07-09 | 十一维度（厦门）网络科技有限公司 | A teaching presentation device for wisdom education |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150826 Termination date: 20160506 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |