CN209765843U - teaching aid - Google Patents
teaching aid Download PDFInfo
- Publication number
- CN209765843U CN209765843U CN201822195562.2U CN201822195562U CN209765843U CN 209765843 U CN209765843 U CN 209765843U CN 201822195562 U CN201822195562 U CN 201822195562U CN 209765843 U CN209765843 U CN 209765843U
- Authority
- CN
- China
- Prior art keywords
- piston
- transparent barrel
- transparent
- barrel
- air
- 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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Abstract
The utility model relates to a teaching aid, include: the upper end of the transparent barrel is opened, the lower end of the transparent barrel is closed, and the barrel body is vertical; a piston arranged in the transparent barrel and capable of sealing air below the piston in the transparent barrel; a thermometer which is arranged at the lower part of the transparent barrel and can display the temperature of the air below the piston in the transparent barrel; the inflation inlet is arranged at the lower part of the transparent barrel, and the lower part of the piston in the transparent barrel can be inflated through the inflation inlet; a heater disposed at the bottom of the transparent barrel and capable of heating the air in the transparent barrel below the piston. The teaching aid of the utility model can heat the air sealed by the piston through the heater and display the current temperature of the air sealed by the piston through the thermometer; through placing the weight above the piston, observing reciprocating of piston, and then the pressure variation of demonstration confined air.
Description
Technical Field
the utility model relates to a teaching aid technical field, in particular to teaching aid.
Background
The teaching aid refers to a model, a real object, a specimen, an instrument, a chart, a slide show and the like for explaining something, and comprises teaching equipment, a teaching instrument, practical training equipment, education equipment, experimental equipment, a teaching specimen, a teaching model and the like.
At present, when the pressure intensity related knowledge points are involved, teachers either rely on books to conduct teaching or rely on some daily living goods as teaching aids to conduct demonstration, but ideal teaching effects cannot be achieved.
SUMMERY OF THE UTILITY MODEL
The utility model discloses solve the technical problem among the prior art, provide a teaching aid.
In order to solve the technical problem, the technical scheme of the utility model is specifically as follows:
A teaching aid, comprising:
The upper end of the transparent barrel is opened, the lower end of the transparent barrel is closed, and the barrel body is vertical; the diameter of the transparent barrel is 10-12 cm, and the height of the transparent barrel is 25-30 cm;
a piston arranged in the transparent barrel and capable of sealing air below the piston in the transparent barrel;
a thermometer which is arranged at the lower part of the transparent barrel and can display the temperature of the air below the piston in the transparent barrel;
The inflation inlet is arranged at the lower part of the transparent barrel, and the lower part of the piston in the transparent barrel can be inflated through the inflation inlet;
a heater disposed at the bottom of the transparent barrel and capable of heating the air in the transparent barrel below the piston.
in the technical scheme, the outer wall of the transparent barrel is provided with a graduated scale.
In the above technical solution, the diameter of the transparent barrel is 11 cm.
In the technical scheme, the height of the transparent barrel is 28 cm.
The utility model discloses following beneficial effect has:
The teaching aid of the utility model can heat the air sealed by the piston through the heater and display the current temperature of the air sealed by the piston through the thermometer; through placing the weight above the piston, observing reciprocating of piston, and then the pressure variation of demonstration confined air.
Drawings
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
Fig. 1 is a schematic structural view of the teaching aid of the present invention.
The reference numerals in the figures denote:
1-transparent barrel; 2-a piston; 3-weight; 4-a thermometer; 5-an inflation inlet; 6-a heater.
Detailed Description
the technical solution of the present invention will be described clearly and completely with reference to the accompanying drawings, and obviously, the described embodiments are some, but not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Furthermore, the technical features mentioned in the different embodiments of the invention described below can be combined with each other as long as they do not conflict with each other.
As shown in fig. 1, the utility model discloses a teaching aid, include: the upper end of the transparent barrel 1 is open, the lower end of the transparent barrel 1 is closed, and the barrel body is vertical. The transparent barrel 1 has a diameter of 11cm and a height of 28 cm.
The transparent barrel 1 is internally provided with a piston 2 which can seal the air below the piston 2 in the transparent barrel 1. The lower part of the transparent cylinder 1 is provided with a thermometer 4 which can display the temperature of the air in the transparent cylinder 1 below the piston 2. The lower part of the transparent barrel 1 is also provided with an inflation inlet 5, and the lower part of the piston 2 in the transparent barrel 1 can be inflated through the inflation inlet 5. The bottom of the transparent cylinder 1 is provided with a heater 6 which can heat the air below the piston 2 in the transparent cylinder 1. The outer wall of the transparent barrel 1 is provided with a graduated scale.
The utility model discloses a teaching aid can be with piston 2 with the air seal of lower part in the transparent cask 1 when the demonstration, then places a weight 3 on piston 2, utilizes inflation inlet 5 to inflate the airtight air of piston 2 below. The weight of the weight 3 can be adjusted and then the student can observe the height change of the piston 2. The sealed air below the piston 2 is heated by the heater 6, and then the student can observe the height change of the piston 2. The graduated scale can display the height of the enclosed air below the piston 2, and the volume can be obtained. The thermometer 4 may indicate the temperature of the enclosed air below the piston 2. The correlation between the pressure, the temperature and the volume of the gas can be verified according to the volume and the temperature of the closed air below the piston 2, the weight of the weight 3 and the cross-sectional area of the piston 2.
The teaching aid of the utility model can heat the air sealed by the piston through the heater and display the current temperature of the air sealed by the piston through the thermometer; through placing the weight above the piston, observing reciprocating of piston, and then the pressure variation of demonstration confined air.
it should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications therefrom are within the scope of the invention.
Claims (4)
1. A teaching aid, comprising:
The upper end of the transparent barrel (1) is opened, the lower end of the transparent barrel (1) is closed, and the barrel body is vertical; the diameter of the transparent barrel (1) is 10-12 cm, and the height of the transparent barrel is 25-30 cm;
a piston (2) which is arranged in the transparent barrel (1) and can seal the air below the piston (2) in the transparent barrel (1);
A thermometer (4) which is provided at the lower part of the transparent drum (1) and can display the temperature of the air below the piston (2) in the transparent drum (1);
The inflation inlet (5) is arranged at the lower part of the transparent barrel (1), and the lower part of the piston (2) in the transparent barrel (1) can be inflated through the inflation inlet (5);
A heater (6) disposed at the bottom of the transparent barrel (1) and capable of heating the air in the transparent barrel (1) below the piston (2).
2. A teaching aid as claimed in claim 1, wherein the outer wall of the transparent drum (1) is provided with a graduated scale.
3. A teaching aid as claimed in claim 1, wherein the transparent drum (1) has a diameter of 11 cm.
4. A teaching aid as claimed in claim 1, wherein the transparent drum (1) has a height of 28 cm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822195562.2U CN209765843U (en) | 2018-12-25 | 2018-12-25 | teaching aid |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822195562.2U CN209765843U (en) | 2018-12-25 | 2018-12-25 | teaching aid |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209765843U true CN209765843U (en) | 2019-12-10 |
Family
ID=68747389
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201822195562.2U Expired - Fee Related CN209765843U (en) | 2018-12-25 | 2018-12-25 | teaching aid |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209765843U (en) |
-
2018
- 2018-12-25 CN CN201822195562.2U patent/CN209765843U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20191210 Termination date: 20211225 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |