CN204130038U - A kind of fermentation demonstration teaching aid of improvement - Google Patents
A kind of fermentation demonstration teaching aid of improvement Download PDFInfo
- Publication number
- CN204130038U CN204130038U CN201420609775.4U CN201420609775U CN204130038U CN 204130038 U CN204130038 U CN 204130038U CN 201420609775 U CN201420609775 U CN 201420609775U CN 204130038 U CN204130038 U CN 204130038U
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- conduit
- balloon
- conical flask
- cup
- aqueous solution
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- 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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- Devices For Use In Laboratory Experiments (AREA)
- Measuring Or Testing Involving Enzymes Or Micro-Organisms (AREA)
- Apparatus Associated With Microorganisms And Enzymes (AREA)
Abstract
The utility model discloses a kind of fermentation demonstration teaching aid of improvement, comprise conical flask and balloon, also cup is provided with on the side of conical flask, at the mixed liquor of conical flask built with white sugar and yeast, at the lime aqueous solution of described cup built with clarification, at taper bottleneck, bottle stopper is set, bottle stopper is provided with two through holes, respectively at through hole internal fixtion conduit A and conduit B, the upper end of conduit A connects a balloon, the lower end of conduit A is stretched in conical flask, the middle part of conduit B is rubber tube, this rubber tube is provided with clip, the other end of conduit B stretches to the lime aqueous solution in cup.The gas that sweat produces gives balloon inflation gradually, and balloon slowly becomes large, takes off the clip be fixed on rubber tube, and in balloon, gas enters in the lime aqueous solution of cup by conduit B, and muddiness has appearred in lime aqueous solution, and produces some precipitations.
Description
Technical field
The utility model relates to a kind of fermentation demonstration teaching aid, especially a kind of fermentation demonstration teaching aid of improvement.
Background technology
Fermentation is a kind of spontaneous phenomenon.When the school teacher explanation mankind are to the utilizing of bacterium and fungi, need to demonstrate fermentation phenomenon with teaching aid, teaching aid conventional is at present a conical flask and the balloon being enclosed within taper bottleneck, specific experiment process is: in one glass of warm water, add one spoonful of white sugar and a bag yeast, stir, then the liquid in cup is poured in conical flask, and be enclosed within taper bottleneck after a balloon is squeezed out air, then conical flask is placed on the windowsill in classroom, allows student's liquid observed every day in conical flask whether can produce the change of bubble and balloon.
Whether said apparatus can be demonstrated in sweat has gas to produce, but what gas what cannot demonstrate generation is.
Summary of the invention
For the deficiencies in the prior art part, the utility model aims to provide a kind of fermentation demonstration teaching aid of improvement, and whether have gas produce, what gas what can also demonstrate generation is if mainly solving can not only demonstrate in sweat.
The technical solution adopted in the utility model, a kind of fermentation demonstration teaching aid of improvement, comprise conical flask and balloon, also cup is provided with on the side of conical flask, at the mixed liquor of conical flask built with white sugar and yeast, at the lime aqueous solution of described cup built with clarification, at taper bottleneck, bottle stopper is set, bottle stopper is provided with two through holes, respectively at through hole internal fixtion conduit A and conduit B, the upper end of conduit A connects a balloon, the lower end of conduit A is stretched in conical flask, the middle part of conduit B is rubber tube, this rubber tube is provided with clip, the other end of conduit B stretches to the lime aqueous solution in cup.
Adopt technique scheme, the gas that sweat produces gives balloon inflation gradually, balloon slowly becomes large, be what gas is take off the clip be fixed on rubber tube when what need to demonstrate generation to student, in balloon, gas enters in the lime aqueous solution of cup by conduit B, originally be the lime aqueous solution of transparent clear, occurred muddiness, and produced some precipitations, chemical knowledge according to students can judge, the gas mainly carbon dioxide that fermentation produces.
This apparatus structure is simple, easy to operate, student's easy understand.
Accompanying drawing explanation
Fig. 1 is prior art schematic diagram;
Fig. 2 is the utility model structural representation;
In accompanying drawing: 1 conical flask 2 cup 3 balloon 4 conduit A 5 conduit B 6 bottle stopper 7 clip.
Embodiment
Below in conjunction with accompanying drawing, the utility model is described in further detail.
Fig. 1 in, teaching aid is a conical flask and the balloon being enclosed within taper bottleneck, specific experiment process is: in one glass of warm water, add one spoonful of white sugar and a bag yeast, stir, then the liquid in cup is poured in conical flask, and be enclosed within taper bottleneck after a balloon is squeezed out air, then conical flask is placed on the windowsill in classroom, allows student's liquid observed every day in conical flask whether can produce the change of bubble and balloon.
As shown in Figure 2, a kind of fermentation demonstration teaching aid of improvement, comprise conical flask 1 and balloon 3, cup 2 is also provided with on the side of conical flask 1, at the mixed liquor of conical flask 1 built with white sugar and yeast, at the lime aqueous solution of described cup 2 built with clarification, conical flask 1 mouthful, bottle stopper 6 is set, bottle stopper 6 seals conical flask 1 mouthful, bottle stopper 6 can be taken off, bottle stopper 6 is provided with two through holes, respectively at through hole internal fixtion conduit A4 and conduit B5, the upper end of conduit A4 connects a balloon 3, the upper end of conduit A4 is stretched in conical flask 1, the middle part of conduit B5 is rubber tube 5a, this rubber tube 5a is provided with clip 7, one end of conduit B5 is stretched in conical flask 1, the other end of conduit B5 stretches to the lime aqueous solution in cup 2.The gas that sweat produces inflates to gradually balloon 3, balloon 3 slowly becomes large, when need to student demonstrate generation to be what gas be, take off the clip 7 be fixed on rubber tube 5a, in balloon 3, gas is entered by conduit B5 in the lime aqueous solution of cup 2, the lime aqueous solution of such transparent clear, there is muddiness, and producing some precipitations, the chemical knowledge according to students can judge, the gas mainly carbon dioxide that fermentation produces.
Claims (1)
1. the fermentation demonstration teaching aid improved, comprise conical flask (1) and balloon (3), it is characterized in that: be also provided with cup (2) on the side of conical flask (1), at the mixed liquor of conical flask (1) built with white sugar and yeast, at the lime aqueous solution of described cup (2) built with clarification, at conical flask (1) mouth, bottle stopper (6) is set, bottle stopper (6) is provided with two through holes, respectively at through hole internal fixtion conduit A(4) and conduit B(5), conduit A(4) upper end connect a balloon (3), conduit B(5) middle part be rubber tube (5a), this rubber tube (5a) is provided with clip (7), conduit B(5) the other end stretch to lime aqueous solution in cup (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420609775.4U CN204130038U (en) | 2014-10-22 | 2014-10-22 | A kind of fermentation demonstration teaching aid of improvement |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420609775.4U CN204130038U (en) | 2014-10-22 | 2014-10-22 | A kind of fermentation demonstration teaching aid of improvement |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204130038U true CN204130038U (en) | 2015-01-28 |
Family
ID=52386371
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420609775.4U Expired - Fee Related CN204130038U (en) | 2014-10-22 | 2014-10-22 | A kind of fermentation demonstration teaching aid of improvement |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204130038U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109369288A (en) * | 2018-11-06 | 2019-02-22 | 北京市紫竹院公园管理处 | A kind of plant enzyme fertilizer and its application in plant rejuvenation |
-
2014
- 2014-10-22 CN CN201420609775.4U patent/CN204130038U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109369288A (en) * | 2018-11-06 | 2019-02-22 | 北京市紫竹院公园管理处 | A kind of plant enzyme fertilizer and its application in plant rejuvenation |
| CN109369288B (en) * | 2018-11-06 | 2022-12-09 | 北京市紫竹院公园管理处 | Plant enzyme fertilizer and application thereof in plant rejuvenation |
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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 |