CN202677678U - Air buoyancy demonstrating device - Google Patents
Air buoyancy demonstrating device Download PDFInfo
- Publication number
- CN202677678U CN202677678U CN 201220385696 CN201220385696U CN202677678U CN 202677678 U CN202677678 U CN 202677678U CN 201220385696 CN201220385696 CN 201220385696 CN 201220385696 U CN201220385696 U CN 201220385696U CN 202677678 U CN202677678 U CN 202677678U
- Authority
- CN
- China
- Prior art keywords
- demonstration
- end cover
- cylinder
- hole
- demonstrating
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Images
Abstract
An air buoyancy demonstrating device relates to a physical teaching aid, and aims to solve the problems that in current physical teaching, a device for demonstrating the air buoyancy principle is not obvious in buoyancy effect due to poor air tightness, so that the buoyancy demonstration effect is seriously influenced, as a result, students cannot clearly and thoroughly understand the air buoyancy. A seal plug is plugged in a lower port of a demonstrating tube; a first through hole is formed in the seal plug; a second through hole is formed in a lower end cover; one end of a guide pipe respectively passes through the second through hole and the first through hole to be connected with the demonstrating tube; a valve switch is mounted at the other end of the guide pipe; an upper sealing washer is arranged between an upper port and an upper end cover of the demonstrating tube; a lower sealing washer is arranged between the lower port and the lower end cover of the demonstrating tube; a spongy gasket is tightly clung to the seal plug in the demonstrating tube; the upper surface of the spongy gasket is a concave surface; and the lower end cover is detachably connected with a base. The air buoyancy demonstrating device is applicable to physical teaching.
Description
Technical field
The utility model relates to a kind of aerostatic buoyancy demonstration device, belongs to the physical teaching aid field.
Background technology
In physics teaching, many demonstration instruments about the liquid buoyancy experiment are arranged, and do not have experimental demonstration for the buoyancy of air.Therefore, the student is when understanding the aerostatic buoyancy principle, usually can not understand because it is too abstract, clearly understand the aerostatic buoyancy principle in order to make students, teacher often will expend very large energy and explain, although can carry out the demonstration of aerostatic buoyancy with precision balance, but the precision balance price is high, be difficult for popularizing, especially the school in remote districts is difficult to possess especially, also have many teachers to expect that own making can give expression to the device of aerostatic buoyancy, but because the homemade aerostatic buoyancy device of teacher sealing is poor, DeGrain still can not be resolved student's query in the heart.
Summary of the invention
The purpose of this utility model provides a kind of aerostatic buoyancy demonstration device, make buoyancy effects not obvious with the instrument that solves demonstration aerostatic buoyancy principle in the physics teaching because sealing is poor, have a strong impact on the buoyancy demonstration effect, thereby cause the student aerostatic buoyancy to be understood the problem be difficult to reach clear thorough degree.
The utility model is to solve the problems of the technologies described above the technical scheme of taking to be: described aerostatic buoyancy demonstration device comprises the demonstration cylinder, upper end cover, bottom end cover, fixed pulley, the first line, the second line, mass and a plurality of demonstration ball, described demonstration cylinder vertically arranges, the upper port place of demonstration cylinder is provided with upper end cover, the lower port place of demonstration cylinder is provided with bottom end cover, described fixed pulley, mass and a plurality of demonstration ball all are arranged on the inside of demonstration cylinder, a plurality of demonstration balls are connected in series by the first line, described the second line is wrapped on the fixed pulley, one end of the second line is fixedly connected with a plurality of demonstration balls, the other end of the second line is fixedly connected with mass, described aerostatic buoyancy demonstration device also comprises base, conduit, sealing-plug, the sponge pad, upper sealing washer, lower sealing washer, valve switch and a plurality of fastening bolt, described sealing-plug jam-pack is in the lower port of demonstration cylinder, be processed with the first through hole on the sealing-plug, be processed with the second through hole on the bottom end cover, the first through hole and the coaxial setting of the second through hole, one end of described conduit passes respectively the second through hole and the first through hole is communicated with the demonstration cylinder, the other end of described conduit is equipped with valve switch, described upper sealing washer is arranged between the upper port and upper end cover of demonstration cylinder, described lower sealing washer is arranged between the lower port and bottom end cover of demonstration cylinder, described sponge pad is adjacent on the sealing-plug that is arranged in the demonstration cylinder, the upper surface of sponge pad is concave panel, removably connects by a plurality of fastening bolts between described bottom end cover and the base.
The utility model compared with prior art comprises following beneficial effect: the setting of valve switch makes in order conveniently to control the conduit opening and closing in the utility model, and the demonstration effect of the aerostatic buoyancy when being conducive to the utility model and demonstrating in the classroom is remarkable; The setting of upper sealing washer and lower sealing washer is the better tightness for the upper and lower port that makes the demonstration cylinder, upper surface is that concave panel sponge pad can be concentrated rapidly the center that is rolled to the sponge pad at a plurality of demonstration balls when dropping to the sponge pad, avoid a plurality of demonstration balls with the collision of demonstration cylinder unnecessary loss to occur, be conducive to prolong serviceable life of the present utility model; Removably connect by a plurality of fastening bolts between bottom end cover and the base, strengthen stability of the present utility model, be conducive to realize the effect of aerostatic buoyancy; The utility model is visual in image, makes things convenient for teacher to impart knowledge to students and student experimenting.
Description of drawings
Fig. 1 is main TV structure schematic diagram of the present utility model.
Fig. 2 is the main TV structure schematic diagram of sponge pad.
Embodiment
Embodiment one: present embodiment is described in conjunction with Fig. 1 and Fig. 2, described aerostatic buoyancy demonstration device comprises demonstration cylinder 1, upper end cover 2, bottom end cover 3, fixed pulley 5, the first line 6, the second line 7, mass 8 and a plurality of demonstration ball 10, described demonstration cylinder 1 vertically arranges, the upper port place of demonstration cylinder 1 is provided with upper end cover 2, the lower port place of demonstration cylinder 1 is provided with bottom end cover 3, described fixed pulley 5, mass 8 and a plurality of demonstration ball 10 all are arranged on the inside of demonstration cylinder 1, a plurality of demonstration balls 10 are connected in series by the first line 6, described the second line 7 is wrapped on the fixed pulley 5, one end of the second line 7 is fixedly connected with a plurality of demonstration balls 10, the other end of the second line 7 is fixedly connected with mass 8, described aerostatic buoyancy demonstration device also comprises base 4, conduit 9, sealing-plug 11, sponge pad 12, upper sealing washer 13, lower sealing washer 14, valve switch 15 and a plurality of fastening bolt 16, described sealing-plug 11 jam-packs are in the lower port of demonstration cylinder 1, be processed with the first through hole 17 on the sealing-plug 11, be processed with the second through hole 18 on the bottom end cover 3, the first through hole 17 and the 18 coaxial settings of the second through hole, one end of described conduit 9 passes respectively the second through hole 18 and the first through hole 17 is communicated with demonstration cylinder 1, the other end of described conduit 9 is equipped with valve switch 15, described upper sealing washer 13 is arranged between the upper port and upper end cover 2 of demonstration cylinder 1, described lower sealing washer 14 is arranged between the lower port and bottom end cover 3 of demonstration cylinder 1, described sponge pad 12 is adjacent on the sealing-plug 11 that is arranged in the demonstration cylinder 1, the upper surface of sponge pad 12 is concave panel, removably connects by a plurality of fastening bolts 16 between described bottom end cover 3 and the base 4.
Embodiment two: in conjunction with Fig. 1 and Fig. 2 explanation, the described demonstration cylinder 1 of present embodiment is transparent visual demonstration cylinder.The demonstration cylinder of transparent visual makes things convenient for students to observe the demonstration effect of aerostatic buoyancy, is conducive to the principle that students is better understood aerostatic buoyancy.
Embodiment three: in conjunction with Fig. 1 and Fig. 2 explanation, the number of the described a plurality of fastening bolts 16 of present embodiment is 2-6.Fastening bolt in this number range is conducive to better connect between bottom end cover 3 and the base 4.
Embodiment four: in conjunction with Fig. 1 and Fig. 2 explanation, the described mass 8 of present embodiment is the metal weights thing.When mass 8 is the metal weights thing, teacher can utilize magnet to attract the metal weights thing to move up and down outside demonstration cylinder 1 wall, make a plurality of demonstration balls 10 can be parked in arbitrary height, this state is suspended state, and the principle that can make things convenient for the student better to demonstrate aerostatic buoyancy is set like this.Magnet in the present embodiment is existing procucts.
In conjunction with embodiment one, two, three and four principle of work of the present utility model is described: open valve switch 15 and make demonstration cylinder 1 be in atmospheric pressure state with extraneous conducting, this moment, a plurality of demonstration balls 10 and mass 8 were in equilibrium state, were still in the container; When inflating for demonstration cylinder 1 by conduit 9, air pressure in the demonstration cylinder 1 increases, increase in density, a plurality of demonstration ball 10 suffered buoyancy increase, when buoyancy increases to difference with the buoyancy of mass 4 and is enough to overcome the resistance of the gravity of a plurality of demonstration balls 10 and balanced system, a plurality of demonstration balls 10 begin floating, namely prove the law of buoyancy of air.
Claims (4)
1. aerostatic buoyancy demonstration device, described aerostatic buoyancy demonstration device comprises demonstration cylinder (1), upper end cover (2), bottom end cover (3), fixed pulley (5), the first line (6), the second line (7), mass (8) and a plurality of demonstration ball (10), described demonstration cylinder (1) vertically arranges, the upper port place of demonstration cylinder (1) is provided with upper end cover (2), the lower port place of demonstration cylinder (1) is provided with bottom end cover (3), described fixed pulley (5), mass (8) and a plurality of demonstration ball (10) all are arranged on the inside of demonstration cylinder (1), a plurality of demonstration balls (10) are connected in series by the first line (6), described the second line (7) is wrapped on the fixed pulley (5), one end of the second line (7) is fixedly connected with a plurality of demonstration balls (10), the other end of the second line (7) is fixedly connected with mass (8), it is characterized in that, described aerostatic buoyancy demonstration device also comprises base (4), conduit (9), sealing-plug (11), sponge pad (12), upper sealing washer (13), lower sealing washer (14), valve switch (15) and a plurality of fastening bolt (16), described sealing-plug (11) jam-pack is in the lower port of demonstration cylinder (1), be processed with the first through hole (17) on the sealing-plug (11), be processed with the second through hole (18) on the bottom end cover (3), the first through hole (17) and the coaxial setting of the second through hole (18), one end of described conduit (9) passes respectively the second through hole (18) and the first through hole (17) is communicated with demonstration cylinder (1), the other end of described conduit (9) is equipped with valve switch (15), described upper sealing washer (13) is arranged between the upper port and upper end cover (2) of demonstration cylinder (1), described lower sealing washer (14) is arranged between the lower port and bottom end cover (3) of demonstration cylinder (1), described sponge pad (12) is adjacent on the sealing-plug (11) that is arranged in the demonstration cylinder (1), the upper surface of sponge pad (12) is concave panel, removably connects by a plurality of fastening bolts (16) between described bottom end cover (3) and the base (4).
2. aerostatic buoyancy demonstration device according to claim 1 is characterized in that described demonstration cylinder (1) is transparent visual demonstration cylinder.
3. aerostatic buoyancy demonstration device according to claim 1 and 2, the number that it is characterized in that described a plurality of fastening bolt (16) are 2-6.
4. aerostatic buoyancy demonstration device according to claim 3 is characterized in that described mass (8) is the metal weights thing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220385696 CN202677678U (en) | 2012-08-06 | 2012-08-06 | Air buoyancy demonstrating device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220385696 CN202677678U (en) | 2012-08-06 | 2012-08-06 | Air buoyancy demonstrating device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202677678U true CN202677678U (en) | 2013-01-16 |
Family
ID=47498565
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220385696 Expired - Fee Related CN202677678U (en) | 2012-08-06 | 2012-08-06 | Air buoyancy demonstrating device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202677678U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103943006B (en) * | 2014-01-21 | 2016-06-29 | 余姚市神马教仪成套有限公司 | Buoyant gas demonstration device |
-
2012
- 2012-08-06 CN CN 201220385696 patent/CN202677678U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103943006B (en) * | 2014-01-21 | 2016-06-29 | 余姚市神马教仪成套有限公司 | Buoyant gas demonstration device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN203013072U (en) | Air buoyancy demonstrator | |
| CN202677678U (en) | Air buoyancy demonstrating device | |
| CN202956965U (en) | Archimedes principle tester | |
| CN206443446U (en) | A kind of novel mechanical teaching disassembly-and-assembly stand | |
| CN201331863Y (en) | Atmosphere pressure demonstration instrument | |
| CN204884327U (en) | Multi -functional physical teaching presentation device | |
| CN203689776U (en) | Venture effect demonstration instrument | |
| CN201532722U (en) | Air buoyancy demonstration instrument | |
| CN202362984U (en) | Demonstration instrument for water spray phenomenon inside negative air pressure flask | |
| CN203733370U (en) | Test stand used for scientific teaching | |
| CN206819614U (en) | A kind of high school physicses conservation of mechanical energy experimental provision | |
| CN206805890U (en) | A kind of Middle School Physics pinhole imaging system experiment teaching aid | |
| CN206516174U (en) | College mathematics teaching teaching aid | |
| CN204946432U (en) | A kind of adjustable windage tester | |
| CN201946173U (en) | Teaching aid for demonstrating volume of cone | |
| CN204706244U (en) | For the floating experiment instrument of imparting knowledge to students | |
| CN203165286U (en) | English affix movable type teaching aid | |
| CN204087605U (en) | A kind of interactive plate of English teaching | |
| CN202443654U (en) | Ball volume verification demonstrator | |
| CN205920659U (en) | Appearance is demonstrated to even speed for physical teaching | |
| CN201126670Y (en) | Fluid motion law demonstration machine | |
| CN201383252Y (en) | Apparatus for teaching and demonstrating law of Archimedes | |
| CN201984691U (en) | Object motion demonstration instrument for physical experiment | |
| CN201156324Y (en) | Educational affiliation for demonstration of gaseous change | |
| CN202563770U (en) | Archimedes law teaching demonstrator |
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: 20130116 Termination date: 20130806 |