CN203085025U - Swim bladder function demonstration device - Google Patents
Swim bladder function demonstration device Download PDFInfo
- Publication number
- CN203085025U CN203085025U CN 201220688286 CN201220688286U CN203085025U CN 203085025 U CN203085025 U CN 203085025U CN 201220688286 CN201220688286 CN 201220688286 CN 201220688286 U CN201220688286 U CN 201220688286U CN 203085025 U CN203085025 U CN 203085025U
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- bottle
- water
- bladder function
- inflator
- demonstration device
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Abstract
The utility model discloses a swim bladder function demonstration device comprising an experiment bottle prepared by plastic and filled with proper amount of water, a bottom cap, a plastic bottle floating in water and with air sealed in the bottle, a weight arranged below the plastic bottle and an inflator; two sides of a top of the bottle cap are respectively provided with an air outlet and an air inlet both connected inside the experiment bottle; a top of the air outlet is provided with a switch; and the air inlet is connected with the inflator. The swim bladder function demonstration device is simple in structure, and can scientifically and accurately demonstrate a principle of fish floating in water.
Description
Technical field
The utility model relates to a kind of experimental teaching equipment, especially a kind of air bladder function presentation device.
Background technology
In primary school's science class, be used for demonstrating sink-float " Cartesian diver " teaching aid freely, form by the plastic bottle and the untight cap for brush.Its principle is: when squeeze bottle period of the day from 11 p.m. to 1 a.m cap for brush gas firmly is compressed, a part of water enters the cap for brush, causes " Cartesian diver " to arrange the smaller volume of water, is subjected to buoyancy and reduces, and it has just sunk; Otherwise when unclamping hand, the pressure of water reduces, and volume of air increases in the cap for brush, and the volume that " Cartesian diver " arranges water increases thereupon, is subjected to buoyancy and also increases, and it has just floated up.This teaching aid uses the cap for brush to open wide, and belongs to not closed state, and by the liquid of turnover, change arranges volume and realizes drifting along.
In teaching, when explaining the principle of work of submarine with " Cartesian diver ", explanation fish the moving about of also using in water.Even in junior middle school's grade eight bioconversion medium, the teacher can be interpreted as the principle of bionical air bladder when explaining the principle of work of submarine.This is unaccommodated in fact, is a kind of viewpoint of mistake, also can be described as a kind of scientific mistake.
Air bladder seals, and gas does not increase not minimizing yet in the fish glue.There is not the change of the water yield yet.Its sink-float impels the air bladder volume change to form by the variation of intraabdominal pressure.
Summary of the invention
The technical problems to be solved in the utility model provides a kind of air bladder function presentation device simple in structure.
In order to solve the problems of the technologies described above, the utility model comprises that one is made of plastics and inner experiment bottle, a bottle cap, the enclose inside that suitable quantity of water is housed has gas and float over a weight and the inflator that plastic bottle, in the water is arranged on the plastic bottle bottom, both sides, described bottle cap upper end are respectively arranged with and test an inner gas outlet and the air intake opening that is connected of bottle, upper end, described gas outlet is provided with a switch, and described air intake opening is connected with described inflator.
Air bladder function presentation device of the present utility model is simple in structure, the principle of can the correct demonstration fish of science drifting along in water.
Description of drawings
Below in conjunction with the drawings and specific embodiments the utility model is described in further detail:
Fig. 1 is the structural representation of the utility model air bladder function presentation device.
Embodiment
Referring to Fig. 1, air bladder function presentation device of the present utility model comprises that one is made of plastics and inner experiment bottle 1, a bottle cap 2, the enclose inside that suitable quantity of water is housed has gas and float over a weight 4 and the inflator 5 that plastic bottle 3, in the water is arranged on plastic bottle 3 bottoms, both sides, described bottle cap 2 upper end are respectively arranged with and test a gas outlet 6 and the air intake opening 7 that bottle 1 inside is connected, 6 upper ends, described gas outlet are provided with a switch 8, and described air intake opening 7 is connected with described inflator 5.
Principle of work of the present utility model is:
Described plastic bottle 3 can be simulated air bladder, weight 4 is equivalent to the weight of fish, when using inflator 5 in experiment bottle 1, to inflate, experiment bottle 1 internal pressure becomes big, plastic bottle 3 dwindles and sinks, behind the switch 8 of opening gas outlet 6, pressure slowly recovers normally in the experiment bottle 1, and plastic bottle 3 recovers normal and come-up gradually.
In sum, content of the present utility model is not limited in the above-described embodiment, and those skilled in the art can propose other embodiment within technological guidance's thought of the present utility model, but these embodiment are included within the scope of the present utility model.
Claims (1)
1. air bladder function presentation device, it is characterized in that: comprise that one is made of plastics and inner experiment bottle (1), a bottle cap (2), the enclose inside that suitable quantity of water is housed has gas and float over a weight (4) and the inflator (5) that plastic bottle (3), in the water is arranged on plastic bottle (3) bottom, both sides, described bottle cap (2) upper end are respectively arranged with and test a gas outlet (6) and the air intake opening (7) that bottle (1) inside is connected, upper end, described gas outlet (6) is provided with a switch (8), and described air intake opening (7) is connected with described inflator (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220688286 CN203085025U (en) | 2012-12-14 | 2012-12-14 | Swim bladder function demonstration device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220688286 CN203085025U (en) | 2012-12-14 | 2012-12-14 | Swim bladder function demonstration device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203085025U true CN203085025U (en) | 2013-07-24 |
Family
ID=48830843
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220688286 Expired - Fee Related CN203085025U (en) | 2012-12-14 | 2012-12-14 | Swim bladder function demonstration device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203085025U (en) |
-
2012
- 2012-12-14 CN CN 201220688286 patent/CN203085025U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| DD01 | Delivery of document by public notice |
Addressee: Liang Yunpeng Document name: Notification to Pay the Fees |
|
| DD01 | Delivery of document by public notice |
Addressee: Liang Yunpeng Document name: Notification of Termination of Patent Right |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130724 Termination date: 20141214 |
|
| EXPY | Termination of patent right or utility model |