CN202650350U - Magdeburg hemisphere experiment demonstrator - Google Patents
Magdeburg hemisphere experiment demonstrator Download PDFInfo
- Publication number
- CN202650350U CN202650350U CN 201220121943 CN201220121943U CN202650350U CN 202650350 U CN202650350 U CN 202650350U CN 201220121943 CN201220121943 CN 201220121943 CN 201220121943 U CN201220121943 U CN 201220121943U CN 202650350 U CN202650350 U CN 202650350U
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- China
- Prior art keywords
- hemisphere
- hemispheres
- demonstrator
- magdeburg
- cavity
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Abstract
The utility model discloses a Magdeburg hemisphere experiment demonstrator which comprises two hemispheres which are combined into a sphere. A cavity is arranged inside a hemisphere. A gas channel and a gas nozzle are arranged on at least one hemisphere, wherein the gas channel and the gas nozzle extend from the cavity to the surface of the hemisphere. When the two hemispheres are combined into the sphere, the internal cavities are closed. In a demonstration process, the two hemispheres are combined into the sealed sphere. When a sealing rubber ring is placed between the two cavities, the inside of the sphere is a closed space. The inner air is pulled out, and a pull ring is pulled for experiment demonstration. The Magdeburg hemisphere experiment demonstrator provided by the utility model has the advantages of easy fabrication, simple structure, and safe and reliable demonstration, can be conveniently brought into the classroom, and can clearly demonstrate the existence of atmosphere pressure.
Description
Technical field
The utility model relates to a kind of experimental demonstration device of physics teaching in secondary school, is a kind of demonstrator for Magdeburg hemispheres test specifically.
Background technology
The Magdeburg hemispheres experiment is to be used for the Classic Experiments that the checking atmospheric pressure exists in the physics teaching in secondary school, but it is larger to test the device volume that is used for demonstration, carry inconvenience, experimental situation is had relatively high expectations, effect is bad or gas leakage slightly arranged in case bleed, students just can not well be realized the effect of " 16 dry goods just can pull open ", can not realize really the existence of atmospheric pressure in the surrounding environment.
The utility model content
The purpose of this utility model is for the problems referred to above, and a kind of simple and reliable moral fort hemisphere experiment demonstrator is provided.
The purpose of this utility model realizes by following technical proposals:
A kind of demonstrator for Magdeburg hemispheres test, comprise two glomerate hemispheres of combination, described hemisphere inside is provided with cavity, and described at least 1 hemisphere is provided with gas passage and the valve that extends to the hemisphere surface from cavity, and the cavity of inside is airtight when two hemispheres are synthetic spherical.
As optimal way, described hemisphere is the glass hemisphere.
As optimal way, described hemisphere is the plastics hemisphere.
As optimal way, described hemisphere is provided with draw ring.
As optimal way, the junction of described two halves spheroid is provided with O-ring seal.
During demonstration, with the spheroid of the synthetic sealing of two halves spheroid, when after putting O-ring seal between two chambeies, air is wherein extracted in the inner space for sealing of spheroid out, and the pulling draw ring carries out experimental demonstration.
It is easy, simple in structure that the utility model is made, and can bring easily the classroom into, demonstrates safe and reliablely, can clearly demonstrate the existence of atmospheric pressure.
Description of drawings
Fig. 1 is structural representation of the present utility model.
Wherein, 1 is hemisphere, and 2 is cavity, and 3 is valve, and 4 is draw ring, and 5 is O-ring seal.
Embodiment
Below in conjunction with specific embodiments and the drawings the utility model is further described.
As shown in Figure 1, a kind of demonstrator for Magdeburg hemispheres test, comprise two glomerate hemispheres 1 of combination, described hemisphere inside is provided with cavity 2, described at least 1 hemisphere is provided with gas passage and the valve 3 that extends to the hemisphere surface from cavity, and the cavity of inside is airtight when two hemispheres are synthetic spherical.Described hemisphere is the glass hemisphere, or is the plastics hemisphere.Described hemisphere is provided with draw ring 4, is used for convenient pulling two halves spheroid, and the junction of described two halves spheroid is provided with O-ring seal 5, for increasing the sealing of two halves spheroid.
During demonstration, with the spheroid of the synthetic sealing of two halves spheroid, when after putting O-ring seal between two chambeies, air is wherein extracted in the inner space for sealing of spheroid out, and the pulling draw ring carries out experimental demonstration.
Claims (5)
1. demonstrator for Magdeburg hemispheres test, it is characterized in that: comprise two combination glomerate hemispheres (1), described hemisphere inside is provided with cavity (2), described at least 1 hemisphere is provided with gas passage and the valve (3) that extends to the hemisphere surface from cavity, and the cavity of inside is airtight when two hemispheres are synthetic spherical.
2. demonstrator for Magdeburg hemispheres test as claimed in claim 1, it is characterized in that: described hemisphere is the glass hemisphere.
3. demonstrator for Magdeburg hemispheres test as claimed in claim 1, it is characterized in that: described hemisphere is the plastics hemisphere.
4. demonstrator for Magdeburg hemispheres test as claimed in claim 1, it is characterized in that: described hemisphere is provided with draw ring (4).
5. demonstrator for Magdeburg hemispheres test as claimed in claim 1, it is characterized in that: the junction of described two halves spheroid is provided with O-ring seal (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220121943 CN202650350U (en) | 2012-03-28 | 2012-03-28 | Magdeburg hemisphere experiment demonstrator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220121943 CN202650350U (en) | 2012-03-28 | 2012-03-28 | Magdeburg hemisphere experiment demonstrator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202650350U true CN202650350U (en) | 2013-01-02 |
Family
ID=47419420
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220121943 Expired - Fee Related CN202650350U (en) | 2012-03-28 | 2012-03-28 | Magdeburg hemisphere experiment demonstrator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202650350U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104700693A (en) * | 2014-05-22 | 2015-06-10 | 宁波职业技术学院 | Teaching tool |
-
2012
- 2012-03-28 CN CN 201220121943 patent/CN202650350U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104700693A (en) * | 2014-05-22 | 2015-06-10 | 宁波职业技术学院 | Teaching tool |
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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: 20130102 Termination date: 20130328 |