CN103761911B - Survey the demonstrator of aerostatic buoyancy and liquid buoyancy size - Google Patents
Survey the demonstrator of aerostatic buoyancy and liquid buoyancy size Download PDFInfo
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- CN103761911B CN103761911B CN201310756192.4A CN201310756192A CN103761911B CN 103761911 B CN103761911 B CN 103761911B CN 201310756192 A CN201310756192 A CN 201310756192A CN 103761911 B CN103761911 B CN 103761911B
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- 239000007788 liquid Substances 0.000 title claims abstract description 55
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 66
- 239000000725 suspension Substances 0.000 claims abstract description 42
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 claims abstract description 3
- 230000005484 gravity Effects 0.000 claims description 15
- 238000002474 experimental method Methods 0.000 abstract description 8
- 230000000694 effects Effects 0.000 description 4
- 238000007599 discharging Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 241000372132 Hydrometridae Species 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000009545 invasion Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000053 physical method Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
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Abstract
The present invention relates to a kind of demonstrator surveying aerostatic buoyancy and liquid buoyancy size, comprise transparent cabinet, support, be arranged on the balance on support, feedwater drainage system, the transparent sink of water is housed, suspension member is measured in determinand assembly and water, transparent cabinet comprises upper cover and lower seat, upper cover and lower seat form and are tightly connected, balance is fixedly installed on pedestal upper end, one end that transparent sink alignment balance stretches out support is arranged, described determinand assembly is hung on the other end that balance stretches out support, measure suspension member in water to be hung on balance and to be placed in transparent sink, feedwater drainage system is fixedly installed on support, switch terminals and the balance of feedwater drainage system are connected, control end communicates with transparent sink, the outer face of measuring suspension member in water is provided with scale, can apply in the experiment of all about buoyancy, novel in design, convenient teaching, student can be helped to understand buoyancy concept, improve learning efficiency, the theory of better embodiment " science is based on experiment ".
Description
Technical field
The present invention relates to a kind of demonstrator, particularly relate to a kind of survey buoyancy size comprehensive demonstration instrument being applicable to impart knowledge to students.
Background technology
When calculating the aerostatic buoyancy size that object is subject to, usually adopt two kinds of physical methods: 1, get an airtight container A made compared with thin material, first weigh up quality m
1, then deflate and make vacuum in container, weigh up quality m
2, the quality m of reduction
1-m
2be exactly the quality of tainer air, and the aerostatic buoyancy size that container A is subject to is approximately equal to (m
1-m
2) g; 2, get a proper volume and the container A of sealing, first weigh up quality m
1, then A is put into a larger sealable container B, deflates, make vacuum in container B, manage to weigh up the quality m of container A under vacuum state
3, the quality m of increase
3-m
1be exactly the quality that container A arranges air in an atmosphere, the aerostatic buoyancy size that container A is subject to equals (m
3-m
1) g, 1st kind of method cannot allow student set up the concept of buoyant gas by experiment, 2nd kind of method is owing to there is no instruments used for education in existing teaching, therefore for the teaching of buoyant gas, cannot well carry out, students cannot well understand buoyancy concept, does not naturally reach good teaching efficiency.
Summary of the invention
The object of the invention is to the defect overcoming prior art, a kind of modern design is provided, the existence of aerostatic buoyancy and liquid buoyancy can be verified intuitively, and be convenient to student and understand the survey aerostatic buoyancy of buoyancy concept and the demonstrator of liquid buoyancy size.
For achieving the above object, the present invention adopts a kind of demonstrator surveying aerostatic buoyancy and liquid buoyancy size, comprise transparent cabinet, support, be arranged on the balance on support, feedwater drainage system, the transparent sink of water is housed, suspension member is measured in determinand assembly and water, described transparent cabinet comprises upper cover and lower seat, upper cover and lower seat form and are tightly connected, support is fixedly installed on lower seat, balance is fixedly installed on pedestal upper end, transparent sink is fixed on the lower end of support side, and one end that the balance that aligns stretches out support is arranged, described determinand assembly is hung on the other end that balance stretches out support, measure suspension member in water to be hung on balance and to be placed in transparent sink, feedwater drainage system is fixedly installed on support, feedwater drainage system comprises switch terminals and control end, the switch terminals of feedwater drainage system forms with control end and is electrically connected, switch terminals and the balance of feedwater drainage system are connected, control end communicates with transparent sink, the outer face of measuring suspension member in described water is provided with scale.
Adopt novel design, determinand assembly is hung on one end of balance crossbeam, be hung on the other end of balance crossbeam with measuring suspension member in graduated water and be contained in transparent sink, balance is adjusted to two ends balance, be evacuated in transparent cabinet, determinand on balance sinks, namely one end hanging with determinand of balance crossbeam is driven to sink, touch the switch of feedwater drainage system, discharge water in transparent sink, by measuring the amount of the scale observable release water on suspension member in water, the size that determinand is subject to buoyancy in a vacuum can be read, the existence of aerostatic buoyancy can be verified, the size of aerostatic buoyancy can be surveyed again intuitively, utilize the equilibrium principle of balance equally, determinand is invaded in liquid, the opposite side of balance just can sink, touch the switch of feedwater drainage system, add water to transparent sink, by the amount that the scale observable measured in water on suspension member adds water, determinand can be read and be subject to buoyancy size in a liquid, the existence of liquid buoyancy can be verified, the size of liquid buoyancy can be surveyed again intuitively, therefore, this demonstrator can survey the size of aerostatic buoyancy and liquid buoyancy simultaneously, and simple and direct-viewing operation, student can be facilitated to understand buoyancy concept, and better embody the theory of " science is based on experiment ".
The present invention is arranged further again, determinand assembly comprises to be surveyed aerostatic buoyancy device and surveys liquid buoyancy device, survey aerostatic buoyancy device and comprise a casing to be measured, casing to be measured is hung on one end of balance, with measure suspension member in water and be oppositely arranged, survey the additional reservoir that liquid buoyancy device comprises gravity suspension member and liquid is housed, described gravity suspension member is hung on one end of balance, with measure suspension member in water and be oppositely arranged, gravity suspension member to be placed in additional reservoir and to immerse liquid.
Casing to be measured is for surveying aerostatic buoyancy; Gravity suspension member and the additional reservoir of liquid is housed for surveying liquid buoyancy, by changing the determinand of balance one end, just can realize the conversion of surveying air/survey liquid buoyancy, easy to operate, rational in infrastructure.
The present invention is arranged further again, survey liquid buoyancy device and also comprise a controllable cistern and two reserve tanks, controllable cistern is arranged on one end of support, be oppositely arranged with transparent sink, controllable cistern is provided with multiple operation valve, and two operation valves being respectively arranged with a water pipe wherein, two reserve tanks are fixedly installed on support, and two reserve tanks consist of with controllable cistern two water pipes and are connected.
Controllable cistern is provided with multiple operation valve, one reserve tank is the use that adds water, another reserve tank is the use that discharges water, therefore, controllable cistern and two reserve tanks can control the amount increasing and decreasing water in water tank easily, test operation person can according to required, autonomous manipulation increases or discharges appropriate water in water tank, make test objective more clear and definite, dexterous changeable, student can better be helped to understand the concept of buoyancy, and (another, experimentally the object of person is different, other liquid replaceable carry out buoyancy test, are not limited to this kind of liquid of water).
The present invention is arranged further again, the switch terminals of feedwater drainage system comprises mount pad, touch pole and two touch switch, described mount pad is fixedly installed on the upper surface of support, be positioned at the rear side of balance, two touch switch are separately positioned on a left side for mount pad, right two ends, touch pole is arranged on the top of mount pad and is fixedly connected with the crossbeam of balance, two ends corresponding two touch switch respectively of touch pole, the control end of feedwater drainage system comprises solenoid valve and conduit, described solenoid valve is arranged on the lower end of support, through hole is provided with below the left side of transparent sink, solenoid valve is connected with touch switch by wire, solenoid valve connecting duct, conduit is arranged through the through hole in transparent sink.
Adopt unique design, feedwater drainage system structure is simple, successful, two touch switch are fixedly connected with the crossbeam two ends of balance respectively, can coordinated signals feedwater drainage system feedwater action with to discharge water action, practicality very, without the need to manual operation, realizes the rebalancing of balance automatically.
The present invention is arranged further again, and transparent sink forms feed trough, measuring flume and discharge sump, three tanks spaced apart, and three tanks are respectively connected with solenoid valve by conduit.
Feed trough water supply, measuring flume are used for measuring suspension member in accommodating water, discharge sump is used for discharging water, and three tanks are all connected with conduit, and conduit passes through solenoid valve conduction.
The present invention is arranged further again, and transparent sink is fixed on the lower end on the right side of support, and the right-hand member that the balance that aligns stretches out support is arranged, and determinand assembly is hung on the left end that balance stretches out support.
Can different according to the different demand of user and field of employment, change determinand assembly and be arranged on position on balance, be such as arranged on the right-hand member that balance stretches out support, transparent sink is then arranged on the left end that balance stretches out support, flexible and changeable, practical.
The present invention is arranged further again, also comprises a position-limited rack, the width between position-limited rack both sides and between the both sides of upper cover cavity width consistent, form close-fitting.
Be provided with position-limited rack, can well play spacing, stuck effect, can well prevent from being evacuated in transparent cabinet and the transparent cabinet that causes inwardly compresses, structure is simple, dependable performance.
In sum, the present invention utilizes the principle of balance to combine with feedwater drainage system, determinand be subject to buoyancy change cause balance one end sink after, feedwater drainage system by the feedwater of transparent sink with discharge water the rebalancing realized balance, utilize to be suspended in the water of balance crossbeam right-hand member and measure the existence that volume change that suspension member soaks in water concisely verifies buoyancy, observe the numerical values recited of buoyancy intuitively, directly can measure the size of aerostatic buoyancy and liquid buoyancy, the theory of " science is based on test " can better be embodied, student is helped to understand the concept of buoyancy, can be used for experimental activity and the inquiry activity of all about buoyancy in nine-year compulsory education science (physics) course, can be used as buoyancy demonstration experimental apparatus or student experimenting instrument is promoted the use of.
Accompanying drawing explanation
Fig. 1 is the general assembly structural representation of the embodiment of the present invention 1.
Fig. 2 is the general assembly structural representation of the embodiment of the present invention 1.
Fig. 3 is the general assembly stereographic map after the embodiment of the present invention 2 removes upper cover.
Fig. 4 is the general assembly stereographic map after the embodiment of the present invention 2 removes upper cover.
Fig. 5 is the general assembly front elevation after the embodiment of the present invention 2 removes upper cover.
Fig. 6 is the stereographic map of the embodiment of the present invention 2.
Fig. 7 is the A portion enlarged drawing in the embodiment of the present invention 2 Fig. 3
Fig. 8 is the general assembly left view after the embodiment of the present invention 2 removes upper cover.
Fig. 9 is the assembling schematic diagram of the embodiment of the present invention 2 gravity suspension member, additional reservoir and controllable cistern.
Figure 10 is the general assembly front elevation after the embodiment of the present invention 3 removes upper cover.
Figure 11 is the general assembly left view after the embodiment of the present invention 3 removes upper cover.
Figure 12 is the general assembly right view after the embodiment of the present invention 3 removes upper cover.
Embodiment
As shown in Figure 1-2, specific embodiments of the invention 1 survey the demonstrator of aerostatic buoyancy and liquid buoyancy size, comprise transparent cabinet 1, support 2, be arranged on the balance 3 on support 2, feedwater drainage system, the transparent sink 4 of water is housed, survey in liquid buoyancy device 5 and the graduated water of outer face band and measure suspension member 6, transparent cabinet 1 comprises upper cover 11 and lower seat 12, upper cover 11 and lower seat 12 form and are tightly connected, support 2 is fixedly installed on lower seat 11, balance 3 is fixedly installed on support 2 upper end, transparent sink 4 is fixed on the lower end on the right side of support 2, and the right-hand member that the balance 3 that aligns stretches out support 2 is arranged, survey liquid buoyancy device 5 and be hung on the left end that balance 3 stretches out support 2, measure suspension member 6 in water to be connected on balance 3 and to be placed in transparent sink 4, feedwater drainage system is fixedly installed on support 2, comprise switch terminals 71 and control end 72, the switch terminals 71 of feedwater drainage system forms with control end 72 and is electrically connected, switch terminals 71 and balance 3 are connected, control end 72 communicates with transparent sink 4, survey liquid buoyancy device 5 and comprise gravity suspension member 51 and additional reservoir 52, described gravity suspension member 51 is hung on the left end of balance 3, be oppositely arranged with transparent sink 4, gravity suspension member 51 is placed in additional reservoir 52, the switch terminals 71 of feedwater drainage system comprises mount pad 711, touch pole 712 and two touch switch 713, described mount pad 711 is fixedly installed on the upper surface of support 2, be positioned at the rear side of balance 3, two touch switch 713 are separately positioned on a left side for mount pad 711, right two ends, touch pole 712 is arranged on the top of mount pad 711 and is fixedly connected with the crossbeam 31 of balance 3, two ends corresponding two touch switch 713 respectively of touch pole 712, the control end 72 of feedwater drainage system comprises solenoid valve 721 and conduit 722, described solenoid valve 721 is arranged on the lower end of support 2, through hole is provided with below the left side of transparent sink 4, one end of solenoid valve 721 is connected with touch switch 713 by wire, the other end connecting duct 722 of solenoid valve 721, the other end of conduit 722 is arranged through the through hole in transparent sink 4, transparent sink 4 forms feed trough 41, measuring flume 42 and discharge sump 43, feed trough 41 water supply, measuring flume 42 is for measuring suspension member 6 in accommodating water, discharge sump 43 is for discharging water, three tanks are all connected with conduit, conduit is by solenoid valve 721 conducting, experimental principle is: survey in liquid buoyancy device 5 and water and measure the left side that suspension member 6 is arranged on balance 3, right two ends (now, liquid is not injected) in additional reservoir 52, balance 3 is adjusted to two ends balance, now in additional reservoir 52, slowly inject liquid again, gravity suspension member 51 is made to contact or invade liquid, the right-hand member of balance 3 is downward-sloping gradually, touch pole 712 right-hand member at balance 3 rear is driven namely to start touch switch 713 to sinking, feedwater drainage system starts feed trough 41 by solenoid valve 721 and adds water in the measuring flume 42 of balance 3 right-hand member, till balance 3 balances once again, touch switch 713 is closed automatically, now just can measure reading numerical values on suspension member 6 from the water measuring flume 42, be the liquid buoyancy size suffered by gravity suspension member 51, the existence of liquid buoyancy can be proved intuitively, and read the size of buoyancy suffered by gravity suspension member 51 clearly, conveniently understand buoyancy concept, dissemination is large.
As shown in figs. 3-9, specific embodiments of the invention 2 survey the demonstrator of aerostatic buoyancy and liquid buoyancy size, survey liquid buoyancy device and also comprise a controllable cistern 53 and two reserve tanks 54, controllable cistern 53 is arranged on the left end of support 2, be oppositely arranged with transparent sink 4, controllable cistern 53 is provided with multiple operation valve 531, and two operation valves are respectively arranged with a water pipe 532 wherein, two reserve tanks 54 are fixedly installed on support 2, two reserve tanks 54 consist of with controllable cistern 53 two water pipes 532 and are connected, experimental principle is: measure in survey liquid buoyancy device 5 and water the left side that suspension member 6 is hung on balance 3 respectively, right two ends are also adjusted to balance, the water yield needed for now being injected in controllable cistern 53 by the operation valve 531 on controllable cistern 53, gravity suspension member 51 is made to touch or immerse liquid, now can find that balance 3 right-hand member sinks, drive touch switch 713 action, feedwater drainage system adds water in feed trough 43, until balance 3 rebalancing, touch switch 713 is closed, complete experiment, controllable cistern 53 is provided with multiple operation valve 531, the amount added water in water tank can be controlled easily, experimental implementation person can according to required, autonomous manipulation adds appropriate water in water tank, makes test objective more clear and definite, dexterous changeable, student can better be helped to understand, understand the concept of buoyancy (separately, experimentally the object of person is different, independently can change other liquid and carry out buoyancy test, be not limited to this kind of liquid of water).
As shown in figs. 10-12, specific embodiments of the invention 3 survey the demonstrator of aerostatic buoyancy and liquid buoyancy size, survey aerostatic buoyancy device 8 and comprise the casing to be measured 81 that is hung on balance 3 left end, experimental principle is: first measure in casing 81 to be measured and water the left side that suspension member 6 is hung on balance 3, right two ends, frame upper limit frame 9, the inner face that position-limited rack is fixedly installed on upper cover 11 (plays spacing, stuck effect, can well prevent from being evacuated in transparent cabinet 1 and the transparent cabinet 1 caused inwardly compresses, ensure accuracy and the authenticity of experiment, structure is simple, dependable performance), appropriate water (recording the numerical value be immersed in the water shown in part that water measures suspension member 6) is injected in measuring flume 42, and regulate balance 3 to two ends to balance, now be evacuated in transparent cabinet 1, the left end of balance 3 can sink, start touch switch 713, namely water in measuring flume 42 can be discharged by operation valve 531 by feedwater drainage system gradually, until balance 3 two ends rebalancing, now again record in water and measure the numerical value shown in part in suspension member 6 invasion water, the aerostatic buoyancy size that just can draw suffered by casing 81 to be measured is subtracted each other with twice numerical value of record, this kind of demonstrator can well help students to understand buoyancy concept, left by balance 3, the swing at right two ends drives the action of feedwater drainage system, only with the naked eye just can embody the existence of buoyancy intuitively, and the magnitude numerical value of buoyancy suffered by object can be read fast and accurately, very practical.
In sum, this demonstrator can survey aerostatic buoyancy can survey liquid buoyancy again, in the experiment of surveying liquid buoyancy, can also be experimentally quantitative to adding liquid in controllable cistern 53 needed for person, multiple functional, vibrational power flow is reasonable, novel in design, very convenient in the teaching of teacher, student can be helped to understand buoyancy concept, improve learning efficiency, the theory of " science is based on experiment " can better be embodied.
Claims (7)
1. survey the demonstrator of aerostatic buoyancy and liquid buoyancy size for one kind, it is characterized in that: comprise transparent cabinet, support, be arranged on the balance on support, feedwater drainage system, the transparent sink of water is housed, suspension member is measured in determinand assembly and water, described transparent cabinet comprises upper cover and lower seat, upper cover and lower seat form and are tightly connected, Bracket setting is on lower seat, balance is fixedly installed on pedestal upper end, transparent sink is fixed on the lower end of support side, and one end that the balance that aligns stretches out support is arranged, described determinand assembly is hung on the other end that balance stretches out support, measure suspension member in water to be hung on balance and to be placed in transparent sink, feedwater drainage system is fixedly installed on support, feedwater drainage system comprises switch terminals and control end, the switch terminals of feedwater drainage system forms with control end and is electrically connected, switch terminals and the balance of feedwater drainage system are connected, control end communicates with transparent sink, the outer face of measuring suspension member in described water is provided with scale.
2. the demonstrator of survey aerostatic buoyancy according to claim 1 and liquid buoyancy size, it is characterized in that: determinand assembly comprises to be surveyed aerostatic buoyancy device and surveys liquid buoyancy device, survey aerostatic buoyancy device and comprise a casing to be measured, casing to be measured is hung on one end of balance, with measure suspension member in water and be oppositely arranged, survey the additional reservoir that liquid buoyancy device comprises gravity suspension member and liquid is housed, described gravity suspension member is hung on one end of balance, with measure suspension member in water and be oppositely arranged, gravity suspension member to be placed in additional reservoir and to immerse liquid.
3. the demonstrator of survey aerostatic buoyancy according to claim 2 and liquid buoyancy size, it is characterized in that: survey liquid buoyancy device and also comprise a controllable cistern and two reserve tanks, controllable cistern is arranged on one end of support, be oppositely arranged with transparent sink, controllable cistern is provided with multiple operation valve, and two operation valves being respectively arranged with a water pipe wherein, two reserve tanks are fixedly installed on support, and two reserve tanks consist of with controllable cistern two water pipes and are connected.
4. the demonstrator of survey aerostatic buoyancy according to claim 3 and liquid buoyancy size, it is characterized in that: the switch terminals of feedwater drainage system comprises mount pad, touch pole and two touch switch, described mount pad is fixedly installed on the upper surface of support, be positioned at the rear side of balance, two touch switch are separately positioned on a left side for mount pad, right two ends, touch pole is arranged on the top of mount pad and is fixedly connected with the crossbeam of balance, two ends corresponding two touch switch respectively of touch pole, the control end of feedwater drainage system comprises solenoid valve and conduit, described solenoid valve is arranged on the lower end of support, through hole is provided with below the left side of transparent sink, solenoid valve is connected with touch switch by wire, solenoid valve connecting duct, conduit is arranged through the through hole in transparent sink.
5. the demonstrator of survey aerostatic buoyancy according to claim 4 and liquid buoyancy size, is characterized in that: transparent sink forms feed trough, measuring flume and discharge sump, three tanks spaced apart, and three tanks are respectively connected with solenoid valve by conduit.
6. the demonstrator of survey aerostatic buoyancy according to claim 5 and liquid buoyancy size, it is characterized in that: transparent sink is fixed on the lower end on the right side of support, and the right-hand member that the balance that aligns stretches out support is arranged, determinand assembly is hung on the left end that balance stretches out support.
7. the demonstrator of survey aerostatic buoyancy according to claim 6 and liquid buoyancy size, it is characterized in that: the demonstrator surveying aerostatic buoyancy and liquid buoyancy size also comprises a position-limited rack, width between position-limited rack both sides and between the both sides of upper cover cavity width consistent, form close-fitting.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310756192.4A CN103761911B (en) | 2013-12-30 | 2013-12-30 | Survey the demonstrator of aerostatic buoyancy and liquid buoyancy size |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310756192.4A CN103761911B (en) | 2013-12-30 | 2013-12-30 | Survey the demonstrator of aerostatic buoyancy and liquid buoyancy size |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103761911A CN103761911A (en) | 2014-04-30 |
| CN103761911B true CN103761911B (en) | 2016-03-30 |
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ID=50529142
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310756192.4A Active CN103761911B (en) | 2013-12-30 | 2013-12-30 | Survey the demonstrator of aerostatic buoyancy and liquid buoyancy size |
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| CN (1) | CN103761911B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2888565Y (en) * | 2006-04-05 | 2007-04-11 | 汪凯 | Air buoyancy tester |
| CN200959181Y (en) * | 2006-06-16 | 2007-10-10 | 翟丹蛟 | Air-buoyancy demonstrator |
| CN201532722U (en) * | 2009-10-28 | 2010-07-21 | 范方欣 | Air buoyancy demonstration instrument |
| CN102456286A (en) * | 2010-10-28 | 2012-05-16 | 秋译庆 | Simultaneous buoyancy comparing and demonstrating device for two heavy objects |
| CN203013072U (en) * | 2012-11-20 | 2013-06-19 | 昝满 | Air buoyancy demonstrator |
-
2013
- 2013-12-30 CN CN201310756192.4A patent/CN103761911B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2888565Y (en) * | 2006-04-05 | 2007-04-11 | 汪凯 | Air buoyancy tester |
| CN200959181Y (en) * | 2006-06-16 | 2007-10-10 | 翟丹蛟 | Air-buoyancy demonstrator |
| CN201532722U (en) * | 2009-10-28 | 2010-07-21 | 范方欣 | Air buoyancy demonstration instrument |
| CN102456286A (en) * | 2010-10-28 | 2012-05-16 | 秋译庆 | Simultaneous buoyancy comparing and demonstrating device for two heavy objects |
| CN203013072U (en) * | 2012-11-20 | 2013-06-19 | 昝满 | Air buoyancy demonstrator |
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| Publication number | Publication date |
|---|---|
| CN103761911A (en) | 2014-04-30 |
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Effective date of registration: 20201023 Address after: The new road Chahe town of Rudong County in Jiangsu province Nantong City, No. 11, 226403 Patentee after: Rudong Yanchuan Property Management Co.,Ltd. Address before: Yueqing City, Zhejiang Province, Zhenlong Xiangyang Village 325619 Patentee before: Ni Jianlin |
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Effective date of registration: 20210708 Address after: 226400 No.15, Hebin Road, Chahe Town, Rudong County, Nantong City, Jiangsu Province Patentee after: NANTONG YAOHUA FIBRE Co.,Ltd. Address before: 226400 group 6, Xinghe village, Chahe Town, Rudong County, Nantong City, Jiangsu Province Patentee before: Rudong County Chahe sewage treatment Co.,Ltd. |
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Denomination of invention: A demonstration instrument for measuring the magnitude of air buoyancy and liquid buoyancy Granted publication date: 20160330 Pledgee: Rudong sub branch of Bank of China Ltd. Pledgor: NANTONG YAOHUA FIBRE Co.,Ltd. Registration number: Y2024980013355 |