CN203217838U - Air pressure demonstration instrument - Google Patents
Air pressure demonstration instrument Download PDFInfo
- Publication number
- CN203217838U CN203217838U CN 201320096144 CN201320096144U CN203217838U CN 203217838 U CN203217838 U CN 203217838U CN 201320096144 CN201320096144 CN 201320096144 CN 201320096144 U CN201320096144 U CN 201320096144U CN 203217838 U CN203217838 U CN 203217838U
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- CN
- China
- Prior art keywords
- hemisphere
- air pressure
- sliding seat
- fixed
- guide rail
- 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
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- 239000011521 glass Substances 0.000 claims description 6
- 210000001503 joint Anatomy 0.000 abstract description 3
- 238000000034 method Methods 0.000 abstract description 3
- 238000000605 extraction Methods 0.000 abstract 1
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Abstract
The utility model discloses an air pressure demonstration instrument which comprises a table, wherein the bottom part of the table is fixedly provided with supporting legs, an object placement rack is arranged among the supporting legs and fixedly provided with a negative pressure machine, and the negative pressure machine is communicated with an extraction pipe. The table is fixedly provided with a guide rail, the guide rail is provided with a left sliding seat and a right sliding seat which can slide along the guide rail, wherein the left sliding seat is fixedly provided with a left hemisphere, the left hemisphere is provided with a left connecting ring, the right sliding seat is fixedly provided with a right hemisphere, and the right hemisphere is provided with a right connecting ring. When the air pressure demonstration instrument is used, the left hemisphere and the right hemisphere are in butt joint and closed, the negative pressure machine starts to operate, the right hemisphere is vacuumized, the reading is observed through an air pressure gauge so as to know the air pressure in the sphere, a fastening bolt is fixed, then the handle is pulled, and the demonstration process is completed. The air pressure demonstration instrument disclosed by the utility model is simple in structure and convenient to use, can demonstrate a Magdeburg hemispheres test conveniently, and helps students to understand.
Description
Technical field
The utility model relates to a kind of physics teaching utensil, is a kind of air pressure demonstrator specifically.
Background technology
In physics teaching, air pressure is because more abstract, the bad understanding of students, and it is to make things convenient for the student to understand a kind of experiment of air pressure that Magdeburg hemispheres is tested.
Summary of the invention
Problem to be solved in the utility model provides a kind of air pressure demonstrator of convenient demonstration.
For addressing the above problem, the technical scheme that the utility model adopts is:
A kind of air pressure demonstrator, comprise desktop, the bottom of described desktop is fixed with supporting leg, is provided with rack between the described supporting leg, be fixed with Negative pressure machine on the described rack, described Negative pressure machine is communicated with exhaust tube, is fixed with guide rail on the described desktop, and described guide rail is provided with can be along left sliding seat and the right sliding seat of guide rail slip, be fixed with left hemisphere on the described left sliding seat, described left hemisphere is provided with left abutment ring, is fixed with right hemisphere on the described right sliding seat, and right hemisphere is provided with right abutment ring.
As further improvement:
Be fixed with handle on the described right hemisphere.
Described left sliding seat is provided with the tight fixed bolt that left sliding seat can be fixed.
Be communicated with rain glass on the described left hemisphere.
During use, left hemisphere and the butt joint of right hemisphere is closed, Negative pressure machine work, right hemisphere is vacuumized, observe registration by rain glass then, learn the air pressure in the spheroid, fixedly tight fixed bolt, pull handle then, finish presentation process, the utility model is simple in structure, and is easy to use, can demonstrate the Magdeburg hemispheres experiment easily, help the student to understand.
Below in conjunction with accompanying drawing the utility model is further described.
Description of drawings
The structural representation of a kind of air pressure demonstrator of accompanying drawing 1 the utility model embodiment.
Among the figure:
The 1-desktop; The 2-supporting leg; The 3-rack; The 4-Negative pressure machine; The 5-exhaust tube; The 6-support; The right sliding seat of 7-; The 8-handle; The 9-universal wheel; The right abutment ring of 10-; The 11-left hemisphere; 12-left side sliding seat; 13-left side abutment ring; The 14-tight fixed bolt; The right hemisphere of 15-; The 16-guide rail; The 17-rain glass.
Embodiment
Embodiment, as shown in Figure 1, a kind of air pressure demonstrator, comprise desktop 1, the bottom of described desktop 1 is fixed with supporting leg 2, be provided with rack 3 between the described supporting leg 2, be fixed with Negative pressure machine 4 on the described rack 3, described Negative pressure machine 4 is communicated with exhaust tube 5, is fixed with guide rail 16 on the described desktop 1, and described guide rail 16 is provided with can be along left sliding seat 12 and the right sliding seat 7 of guide rail 16 slips, be fixed with left hemisphere 11 on the described left sliding seat 12, described left hemisphere 11 is provided with left abutment ring 13, is fixed with right hemisphere 15 on the described right sliding seat 7, and right hemisphere 15 is provided with right abutment ring 10; Described left hemisphere 11 and right hemisphere 15 are oppositely arranged, and can form a complete sphere after left hemisphere 11 and right hemisphere 15 closures; Be fixed with handle 8 on the described right hemisphere 15; Described left sliding seat 12 is provided with the tight fixed bolt 14 that left sliding seat 12 can be fixed; Be communicated with rain glass 17 on the described left hemisphere 11; Described guide rail 16 is arranged on the desktop 1 by support 6; The bottom of supporting leg 2 is provided with universal wheel 9.
During use, left hemisphere 11 and 15 butt joints of right hemisphere is closed, Negative pressure machine 4 work, right hemisphere 15 is vacuumized, observe registration by rain glass 17 then, learn the air pressure in the spheroid, fixedly tight fixed bolt 14, pull handle 8 then, finish presentation process, the utility model is simple in structure, and is easy to use, can demonstrate the Magdeburg hemispheres experiment easily, help the student to understand.
Claims (4)
1. air pressure demonstrator, comprise desktop (1), it is characterized in that: the bottom of described desktop (1) is fixed with supporting leg (2), be provided with rack (3) between the described supporting leg (2), be fixed with Negative pressure machine (4) on the described rack (3), described Negative pressure machine (4) is communicated with exhaust tube (5), be fixed with guide rail (16) on the described desktop (1), described guide rail (16) is provided with can be along left sliding seat (12) and the right sliding seat (7) of guide rail (16) slip, be fixed with left hemisphere (11) on the described left sliding seat (12), described left hemisphere (11) is provided with left abutment ring (13), be fixed with right hemisphere (15) on the described right sliding seat (7), right hemisphere (15) is provided with right abutment ring (10).
2. a kind of air pressure demonstrator as claimed in claim 1 is characterized in that: be fixed with handle (8) on the described right hemisphere (15).
3. a kind of air pressure demonstrator as claimed in claim 1 is characterized in that: described left sliding seat (12) be provided with can left sliding seat (12) is fixing tight fixed bolt (14).
4. a kind of air pressure demonstrator as claimed in claim 1 is characterized in that: be communicated with rain glass (17) on the described left hemisphere (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320096144 CN203217838U (en) | 2013-03-04 | 2013-03-04 | Air pressure demonstration instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320096144 CN203217838U (en) | 2013-03-04 | 2013-03-04 | Air pressure demonstration instrument |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203217838U true CN203217838U (en) | 2013-09-25 |
Family
ID=49207355
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320096144 Expired - Fee Related CN203217838U (en) | 2013-03-04 | 2013-03-04 | Air pressure demonstration instrument |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203217838U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107238533A (en) * | 2017-07-24 | 2017-10-10 | 江苏方正环测设备有限公司 | A kind of vacuum pressure experimental rig |
-
2013
- 2013-03-04 CN CN 201320096144 patent/CN203217838U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107238533A (en) * | 2017-07-24 | 2017-10-10 | 江苏方正环测设备有限公司 | A kind of vacuum pressure experimental rig |
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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: 20130925 Termination date: 20140304 |