CN205003940U - Experimental device for oxygen content in improved generation measurement air - Google Patents
Experimental device for oxygen content in improved generation measurement air Download PDFInfo
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- CN205003940U CN205003940U CN201520689986.8U CN201520689986U CN205003940U CN 205003940 U CN205003940 U CN 205003940U CN 201520689986 U CN201520689986 U CN 201520689986U CN 205003940 U CN205003940 U CN 205003940U
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- tube
- test tube
- rubber tube
- scale
- rubber
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Abstract
The utility model discloses an experimental device for oxygen content in improved generation measurement air, this experimental apparatus of its characterized in that includes iron stand platform, alcohol burner, test tube, spring clamp, haplopore rubber buffer, glass pipe, rubber tube, takes the boost motor of scale, the test tube is fixed at the iron stand bench, and the one end of glass pipe links to each other with the test tube, and the other end links to each other with the rubber tube, and the other end of rubber tube links to each other with the boost motor of taking the scale, is equipped with the spring clamp on the rubber tube. Demonstrate image directly perceived, convenient to carry saves the run time, and is few with the medicine, the pollution abatement, and experimental error is little.
Description
Technical field
The utility model relates to a kind of experimental provision, particularly relates to the experimental provision that a kind of modified measures content of oxygen in air.
Background technology
Chemistry is a subject based on experiment, is also the basic subject of research material composition, structure, character and a Changing Pattern.Chemical experiment is the Main Means of chemistry teaching, is also ingredient important in chemistry teaching.Meanwhile, chemical experiment is again the form of teaching advocated of fresh course and mode of learning.The education and instruction function of specializes in chemistry experiment, not only can improve chemical experiment teaching usefulness, but also is of value to the overall qualities improving student.Whether the experimental provision therefore designed is reasonable, directly will affect quality of instruction.We find in experimentation, to the experimental provision of " measurement content of oxygen in air " on textbook, exist following not enough: one is that bell jar, tank volume are large, carries inconvenience; Two is that in bell jar, oxygen is many, makes that the consumption of red phosphorus is large, experimental period is long; Three is put in bell jar after red phosphorus will be lighted in air outside, and the white cigarette that produces of burning can contaminated air so on the one hand, and red phosphorus has air effusion in the process middle bell jar stretching into bell jar on the other hand, increases experimental error.For overcoming above deficiency, we devise the experimental provision that a kind of modified measures content of oxygen in air.
Summary of the invention
The purpose of this utility model is to provide the experimental provision that a kind of modified measures content of oxygen in air.
The purpose of this utility model is achieved through the following technical solutions: this experimental provision comprises iron stand, spirit lamp, test tube, spring clamp, single hole rubber plug, glass tube, rubber tube, roll booster with a scale.
Described test tube is fixed on iron stand, and one end of glass tube is connected with test tube, and the other end is connected with rubber tube, and the other end of rubber tube is connected with roll booster with a scale, and rubber tube is provided with spring clamp.
Described test tube is by single hole rubber stopper seal, and the volume of test tube is about 45mL, specification 18 × 180mm.
The piston rod that described roll booster comprises boosting cylinder with a scale, is positioned at the piston of boosting cylinder and is connected with piston.
When testing, first will in vitro put into appropriate white phosphorus, piston is in 10mL place in advance, then each device is connected, with spirit lamp to the test tube bottom-heated filling white phosphorus position, burning terminates, trip spring folder after test tube cooling by the time, can see that syringe piston is slowly advanced to 1mL scale place from scale 10mL, illustrate that in air, the volume fraction of oxygen is about (10-1) mL/45mL=1/5.
The beneficial effects of the utility model: demonstrating visual's image, easy to carry, save experimental period, few with medicine, pollution abatement, experimental error is little.
Accompanying drawing explanation
Embodiment of the present utility model is described in detail below in conjunction with accompanying drawing
Fig. 1 is schematic diagram of the present utility model
In figure: 1, iron stand, 2, spirit lamp, 3, test tube, 4, spring clamp, 5, single hole rubber plug, 6, glass tube, 7, rubber tube, 8, roll booster with a scale.
Embodiment
As shown in Figure 1, test tube 3 is fixed on iron stand 1, and one end of glass tube 6 is connected with the test tube 3 of band single hole rubber plug 5, the other end is connected with rubber tube 7, and the other end of rubber tube 7 is connected with roll booster 8 with a scale, and rubber tube 7 is provided with spring clamp 4, after connecting, heat with spirit lamp 2.
Claims (2)
1. the experimental provision of a modified measurement content of oxygen in air, it is characterized in that this experimental provision comprises iron stand, spirit lamp, test tube, spring clamp, single hole rubber plug, glass tube, rubber tube, roll booster with a scale, described test tube is fixed on iron stand, one end of glass tube is connected with test tube, the other end is connected with rubber tube, the other end of rubber tube is connected with roll booster with a scale, and rubber tube is provided with spring clamp.
2. a kind of modified as claimed in claim 1 measures the experimental provision of content of oxygen in air, it is characterized in that the piston rod that described roll booster comprises boosting cylinder with a scale, is positioned at the piston of boosting cylinder and is connected with piston.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520689986.8U CN205003940U (en) | 2015-09-02 | 2015-09-02 | Experimental device for oxygen content in improved generation measurement air |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520689986.8U CN205003940U (en) | 2015-09-02 | 2015-09-02 | Experimental device for oxygen content in improved generation measurement air |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205003940U true CN205003940U (en) | 2016-01-27 |
Family
ID=55160818
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520689986.8U Expired - Fee Related CN205003940U (en) | 2015-09-02 | 2015-09-02 | Experimental device for oxygen content in improved generation measurement air |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205003940U (en) |
-
2015
- 2015-09-02 CN CN201520689986.8U patent/CN205003940U/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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160127 Termination date: 20160902 |