CN204130037U - A kind of teaching aid of measurement content of oxygen in air of improvement - Google Patents
A kind of teaching aid of measurement content of oxygen in air of improvement Download PDFInfo
- Publication number
- CN204130037U CN204130037U CN201420609591.8U CN201420609591U CN204130037U CN 204130037 U CN204130037 U CN 204130037U CN 201420609591 U CN201420609591 U CN 201420609591U CN 204130037 U CN204130037 U CN 204130037U
- Authority
- CN
- China
- Prior art keywords
- shaped pipe
- wires
- air
- combustion spoon
- cuso
- 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
Links
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 title claims abstract description 14
- 229910052760 oxygen Inorganic materials 0.000 title claims abstract description 14
- 239000001301 oxygen Substances 0.000 title claims abstract description 14
- 238000005259 measurement Methods 0.000 title claims abstract description 7
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 claims abstract description 23
- 238000002485 combustion reaction Methods 0.000 claims abstract description 19
- ARUVKPQLZAKDPS-UHFFFAOYSA-L copper(II) sulfate Chemical compound [Cu+2].[O-][S+2]([O-])([O-])[O-] ARUVKPQLZAKDPS-UHFFFAOYSA-L 0.000 claims 1
- 229910000366 copper(II) sulfate Inorganic materials 0.000 claims 1
- 238000002474 experimental method Methods 0.000 abstract description 3
- 238000000034 method Methods 0.000 abstract description 3
- 230000015572 biosynthetic process Effects 0.000 abstract description 2
- 231100000614 poison Toxicity 0.000 abstract description 2
- 230000007096 poisonous effect Effects 0.000 abstract description 2
- 239000007789 gas Substances 0.000 description 17
- 235000019504 cigarettes Nutrition 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 238000010992 reflux Methods 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- DLYUQMMRRRQYAE-UHFFFAOYSA-N tetraphosphorus decaoxide Chemical compound O1P(O2)(=O)OP3(=O)OP1(=O)OP2(=O)O3 DLYUQMMRRRQYAE-UHFFFAOYSA-N 0.000 description 2
- 230000007812 deficiency Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000000779 smoke Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
Landscapes
- Investigating Or Analyzing Non-Biological Materials By The Use Of Chemical Means (AREA)
Abstract
The teaching aid of the measurement content of oxygen in air of a kind of improvement of the utility model, comprises a U-shaped pipe and the support for fixing U-shaped pipe, in U-shaped pipe, injects CuSO
4solution, U-shaped pipe wherein Single port rubber stopper is set, two wires are set in described rubber stopper, the lower end of two wires is stretched in U-shaped pipe, and the lower end of two wires connects miniature resistance wire, fixed combustion spoon on described resistance wire, in combustion spoon, arrange red phosphorus, combustion spoon is positioned at CuSO
4molten ullage, the upper end of two wires is stretched to outside U-shaped pipe, and two wired in series connect battery and switch formation loop, and U-shaped pipe wherein another port communicates with air.The whole process of red phosphorus burning is all carried out in closed container, uses CuSO simultaneously
4solution had both added the visibility of experiment, absorbed poisonous white phosphorus steam more.
Description
Technical field
The utility model relates to a kind of teaching aid measuring content of oxygen in air, the teaching aid of the measurement content of oxygen in air especially improved.
Background technology
The oxygen content that prior art is measured in air utilizes red phosphorus to burn in atmosphere, consumed by oxygen in bottle, generates phosphorus pentoxide solid, pressure in air reduced, under atmospheric pressure effect, enters the volume of water in container and be the volume of the oxygen of minimizing.Existing teaching aid comprises gas bottle, beaker, conduit, combustion spoon, gas bottle is connected by conduit with beaker, and gas collection bottleneck adopts rubber stopper sealing, and conduit is first clamped with tongs, in gas bottle, first load a small amount of water, then remaining part is divided into five deciles; Put a little red phosphorus at combustion spoon again, light rear putting into rapidly in gas bottle, jam-pack rubber stopper; After the red phosphorus self-extinguish that ignite, vibration gas bottle, makes temperature in bottle be down to room temperature; Open tongs, the aqueous reflux in visible beaker enters in gas bottle, thus measures the oxygen content in air.
But above-mentioned teaching aid needs to light red phosphorus outside gas bottle, is then putting into gas bottle, then jam-pack rubber stopper, some white cigarettes that during this, red phosphorus burning produces distribute in atmosphere, have pollution to Classroom air.
Summary of the invention
For the deficiencies in the prior art part, the utility model aims to provide a kind of teaching aid of measurement content of oxygen in air of improvement, mainly solves the white smoke pollution Classroom air problem that red phosphorus burning produces.
The technical solution adopted in the utility model, a kind of teaching aid of measurement content of oxygen in air of improvement, comprises a U-shaped pipe and the support for fixing U-shaped pipe, in U-shaped pipe, injects CuSO
4solution, U-shaped pipe wherein Single port rubber stopper is set, two wires are set in described rubber stopper, the lower end of two wires is stretched in U-shaped pipe, and the lower end of two wires connects miniature resistance wire, fixed combustion spoon on described resistance wire, in combustion spoon, arrange red phosphorus, combustion spoon is positioned at CuSO
4molten ullage, the upper end of two wires is stretched to outside U-shaped pipe, and two wired in series connect battery and switch formation loop, and U-shaped pipe wherein another port communicates with air.
Adopt technique scheme, close a switch, red phosphorus is lighted in miniature resistance wire heating, the whole process of red phosphorus burning is all carried out in closed container, stop the situation that hot-air escapes, the white cigarette that simultaneously it also avoid effusion pollutes and injures, and whole experimentation avoids the situation of white cigarette diffusion when lighting red phosphorus well, uses CuSO simultaneously
4solution had both added the visibility of experiment, absorbed poisonous white phosphorus steam more.
The utility model is simple to operate, and each experiment only needs 2-3 minute.
Accompanying drawing explanation
Fig. 1 is existing teaching aid structure schematic diagram;
Fig. 2 is the utility model structural representation:
In accompanying drawing: 1 gas bottle 2 beaker 3 conduit 4 tongs 5 support 6 U-shaped pipe
7CuSO
4solution 8 wire 9 combustion spoon 10 resistance wire 11 rubber stopper 12 clip.
Embodiment
Below in conjunction with accompanying drawing, the utility model is described in further detail.
In FIG, teaching aid comprises gas bottle 1, beaker, conduit 3, combustion spoon, and gas bottle 1 is connected by conduit 3 with beaker 2, gas bottle 1 mouthful adopts rubber stopper sealing, conduit 3 is first clamped with tongs 4, in gas bottle 1, first loads a small amount of water, then remaining part is divided into five deciles; Put a little red phosphorus at combustion spoon again, light and put into rapidly gas bottle 1 li, jam-pack rubber stopper afterwards; After the red phosphorus self-extinguish that ignite, vibration gas bottle, makes temperature in bottle be down to room temperature; Open tongs 4, the aqueous reflux in visible beaker 2 enters in gas bottle 1, thus measures the oxygen content in air.
As shown in Figure 2, a U-shaped pipe 6 is fixed on support 5 by clip 12, and whole U-shaped pipe 6 is vertically arranged, and two ports of U-shaped pipe 6 are positioned at same level, in U-shaped pipe 6, inject CuSO
4solution 7, CuSO
4solution 7 accounts for greatly 1/3 of U-shaped pipe 6 height, at the wherein Single port of U-shaped pipe 6, rubber stopper 11 is set, two wires 8 are set in described rubber stopper 11, the lower end of two wires 8 is stretched in U-shaped pipe 6, the lower end of two wires 8 connects miniature resistance wire 10, fixed combustion spoon 9 on described resistance wire 10, certain combustion spoon 9 also can be fixed on the lower end of two wires 8, in combustion spoon 9, red phosphorus is set, also white phosphorus can be set in combustion spoon 9, the burning-point of white phosphorus is lower than red phosphorus, the white phosphorus comparatively red phosphorus that burns is slow, more can absorb more oxygen, make test findings more accurate, combustion spoon 9 is positioned at CuSO
4solution 7 tops, the upper end of two wires 8 is stretched to outside U-shaped pipe 6, and two wire 8 series connection batteries and switch form loop, and U-shaped pipe 6 wherein another port communicates with air.
Claims (1)
1. the teaching aid of the measurement content of oxygen in air improved, it is characterized in that: comprise a U-shaped pipe (6) and the support (5) for fixing U-shaped pipe (6), CuSO4 solution (7) is injected in U-shaped pipe (6), U-shaped pipe (6) wherein Single port rubber stopper (11) is set, two wires (8) are set in described rubber stopper (11), the lower end of two wires (8) is stretched in U-shaped pipe (6), the lower end of two wires (8) connects miniature resistance wire (10), at the upper fixed combustion spoon (9) of described resistance wire (10), in combustion spoon (9), red phosphorus is set, combustion spoon (9) is positioned at CuSO
4above solution (7) face, U-shaped pipe (6) is stretched to outward in the upper end of two wires (8), and two wire (8) series connection batteries and switch form loop, and U-shaped pipe (6) wherein communicates with air another port.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420609591.8U CN204130037U (en) | 2014-10-22 | 2014-10-22 | A kind of teaching aid of measurement content of oxygen in air of improvement |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420609591.8U CN204130037U (en) | 2014-10-22 | 2014-10-22 | A kind of teaching aid of measurement content of oxygen in air of improvement |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204130037U true CN204130037U (en) | 2015-01-28 |
Family
ID=52386370
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420609591.8U Expired - Fee Related CN204130037U (en) | 2014-10-22 | 2014-10-22 | A kind of teaching aid of measurement content of oxygen in air of improvement |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204130037U (en) |
-
2014
- 2014-10-22 CN CN201420609591.8U patent/CN204130037U/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 |
Granted publication date: 20150128 Termination date: 20151022 |
|
| EXPY | Termination of patent right or utility model |