CN201707823U - Common gas preparation and property checking demonstrator - Google Patents
Common gas preparation and property checking demonstrator Download PDFInfo
- Publication number
- CN201707823U CN201707823U CN2010201775902U CN201020177590U CN201707823U CN 201707823 U CN201707823 U CN 201707823U CN 2010201775902 U CN2010201775902 U CN 2010201775902U CN 201020177590 U CN201020177590 U CN 201020177590U CN 201707823 U CN201707823 U CN 201707823U
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Abstract
The utility model belongs to a teaching apparatus and particularly relates to a common gas preparation and property checking demonstrator. The common gas preparation and property checking demonstrator consists of a cover board, a tail gas collecting tank, spherical funnels, gas inlet pipes, a sharp-nose latex tube, a gas guide nozzle, an injector, a rubber plug, a reaction container and a base and is characterized in that both shoulders of the reaction container fixed on the base are respectively provided with the gas guide nozzle and a round hole in which the rubber plug is plugged; the sharp-nose latex tube internally provided with a glass bead is sleeved on the gas guide nozzle; the bottom parts of a plurality of spherical funnels which are vertically assembled in an inserted mode and have the same shape and specification are of a round shape and are sealed; the neck parts of the spherical funnels are provided with openings laterally; the gas inlet pipes are connected in the openings; the lower part of the cover board and the tail gas collecting tank with small holes are inserted in the opening of the uppermost spherical funnel; and all joints are sealed by a sealant. The common gas preparation and property checking demonstrator made of a transparent material can complete preparation of gas and property checking experiment of the gas in one step and can reduce experimental facilities, simplifies experimental procedure, shorten experimental time, strengthens experiment comparison and improve experimental effect.
Description
Technical field
The utility model belongs to instruments used for education, is specifically related to common gas preparation and character check demonstration device.
Background technology
The chemical experiment of many gas preparations and character check thereof is arranged in the middle school chemistry, need a plurality of step experiments just can finish.Though substep experiment has its benefit, can weak point is also arranged,, shortage comparative long or the like such as the experimental provision times many, cost of needs.The preparation of some gas and character check thereof, as sulfuretted hydrogen and carbon dioxide, necessary usefulness one covering device is finished, but does not also have this quasi-instrument at present.Preparation of the utility model common gas and character check demonstration device can once be finished the preparation and the character check thereof of gas, can reduce experimental provision, simplify experimental arrangement, shorten experimental period, strengthen the experiment comparative, improve experiment effect.
Summary of the invention
Common gas preparation that the utility model provides and character check demonstration device, its objective is by preparation and the disposable Comprehensive Experiment mode of finishing of character check thereof gas, solve in the chemical experiment, the check of the preparation of some common gas and character thereof exists that experimental provision is many, spended time long, the problem of shortage comparative, has improved experiment effect.
The purpose of this utility model realizes by following technical solution:
Preparation of the utility model common gas and character check demonstration device are made of the gentle health check-up check system of gas preparation system two parts.
(1) gas examination system: constitute by cover plate (1), exhaust collection groove (2), spherical hopper (3), draft tube (5); It is characterized in that: the rounded and sealing in a plurality of spherical hoppers (3) bottom of the same shape same specification of the assembling of vertically pegging graft, the neck side opening connects draft tube (5) in mouthful; A spherical hopper (3) of going up the most mouthful bottom that cover plate (1) is established in interior grafting has the exhaust collection groove (2) of aperture, and all seams (4) seal with sealant.
(2) gas preparation system: constitute by sharp mouth emulsion tube (6), gas guide nozzle (7), syringe (8), rubber plug (9), reaction vessel (10), base (11); It is characterized in that: the reaction vessel of inverted triangle shape (10) is fixed on the base (11) with dovetail groove, reaction vessel (10) two shoulders are established gas guide nozzle (7) respectively and are filled in the circular hole of rubber plug (9), and gas guide nozzle (7) is gone up the sharp mouth emulsion tube (6) of the built-in beaded glass of socket.
Gas examination system and gas preparation system are to be connected by the mode that the neck with the spherical hopper (3) of bottommost inserts reaction vessel (10) oral area, and seam (4) still seals with sealant.
Preparation of the utility model common gas and character check demonstration device select for use transparent material to make; Forward and backward two sides is that the plane is beneficial to projection, and two sides are that circular shape is visual in image.
The beneficial effects of the utility model are: during experiment, can prepare gas in the reaction vessel of the utility model bottom, the gas of preparation constantly rises, during through the different test solution of each spherical hopper bottom, with wherein different test solution generation different chemicals reaction, can check the number of chemical character of this gas simultaneously respectively; Establish gas guide nozzle on the reaction vessel, also can collect or do and light experiment, reached the gas preparation and checked the disposable purpose of finishing gas.Whole experiment is all carried out in airtight demonstration device, and the waste gas that overflows liquid level at last also can enter the tail gas absorption cell at top and be absorbed by the cotton-wool that is soaked with chemical reagent in the tail gas absorption cell, can contaminated air.In experiment, spherical hopper can be pegged graft one or more according to the experiment needs, and experiment effect is good.
Description of drawings
Accompanying drawing is the structural representation of common gas preparation and character check demonstration device
Each several part is among the figure: cover plate 1, exhaust collection groove 2, spherical hopper 3, seam 4, draft tube 5, sharp mouth emulsion tube 6, gas guide nozzle 7, syringe 8, rubber plug 9, reaction vessel 10, base 11.
Embodiment
Present embodiment is an example to prepare hydrogen sulfide gas and to check the experiment of its serial character, is set forth:
When preparation of the utility model common gas and character check demonstration device are done the experiment of preparation and check stink damp series character, the by specification accompanying drawing assembles the utility model complete, and seam (4) all is coated with vaseline sealing, check after impermeability well and take preparing experiment apart.At first, give and inject iron protosulfide solution in the reaction vessel (10), give in three spherical hoppers (3) and be respectively charged into lead nitrate solution, sodium sulfite solution and purple reindeer moss test solution, place the cotton-wool that has soaked sodium hydroxide solution in the exhaust collection groove (2); Secondly, spherical hopper (3) neck that lead nitrate solution is housed is plugged in reaction vessel (10) oral area, the neck of the spherical hopper (3) of splendid attire sodium sulfite solution is plugged in the oral area of the spherical hopper (3) of splendid attire lead nitrate solution, the neck of the spherical hopper (3) of splendid attire purple reindeer moss test solution is plugged in the oral area of the spherical hopper (3) of splendid attire sodium sulfite solution, inserts the oral area of the spherical hopper (3) that purple reindeer moss test solution is housed being placed with the exhaust collection groove (2) that has soaked the sodium hydroxide solution cotton-wool; Once more, all be coated with the vaseline sealing for all seams (4), cover cover plate (1) for exhaust collection groove (2) and also seal; With sharp mouth emulsion tube (6) cover envelope gas guide nozzle (7), clog the circular hole of reaction vessel (10) shoulder with rubber plug (9); At last, an empty syringe needle is pierced through rubber plug (9) stretches in the reaction vessel (10), with pack into impermeability of the present utility model behind the reagent of the method inspection that slowly pushes air, confirm that impermeability is good after, begin experiment.Take down cover plate (1), syringe (8) the needle pierces rubber plug (9) that sucks a small amount of dilute sulfuric acid is stretched in the reaction vessel (10), slowly drip dilute sulfuric acid in the iron protosulfide solution in the reaction vessel (10), chemical reaction begins, and the bubble of generation begins slowly to rise step by step through different solutions.At this moment, can be observed dissolving in three spherical hoppers (3) of same shape same specification of vertical grafting assembling the solution of a certain amount of gas from bottom to top produce black precipitate, faint yellow precipitation, the red phenomenon of solution becomes, thereby verify out that the gas that is generated after the reaction is exactly H
2S also checks out its chemical property to have reductibility and acidity.The residual gas of experimentation is absorbed by the NaOH cotton-wool of placing in the exhaust collection groove (2), and air is pollution-free.If do projection demonstration, this utility model is placed the projector that stands up and bring into focus before, open the projector switch, can clearly manifest this utility model profile and series of chemical phenomenon on the screen.If will light H2S gas, take down the beaded glass in the sharp mouth emulsion tube (6), cover plate (1) is covered at exhaust collection groove (2) go up sealing, light with fire at glass point mouth place then.If will collect H
2S gas takes off sharp mouth emulsion tube (6), changes wireway, can collect.
Claims (4)
1. common gas preparation and character check demonstration device are made of the gentle health check-up check system of gas preparation system two parts; Wherein the gas examination system is made of cover plate (1), exhaust collection groove (2), spherical hopper (3), draft tube (5); It is characterized in that: the rounded and sealing in a plurality of spherical hoppers (3) bottom of the same shape same specification of the assembling of vertically pegging graft, the neck side opening, connect draft tube (5) in mouthful, a spherical hopper (3) of going up the most mouthful bottom that cover plate (1) is established in interior grafting has the exhaust collection groove (2) of aperture, and all seams (4) seal with sealant.
2. common gas preparation according to claim 1 and character check demonstration device, its gas preparation system is made of sharp mouth emulsion tube (6), gas guide nozzle (7), syringe (8), rubber plug (9), reaction vessel (10), base (11); Be characterised in that: the reaction vessel of inverted triangle shape (10) is fixed on the base (11) with dovetail groove, and reaction vessel (10) two shoulders are established gas guide nozzle (7) respectively and filled in the circular hole of rubber plug (9), and gas guide nozzle (7) is gone up the sharp mouth emulsion tube (6) of the built-in beaded glass of socket.
3. common gas preparation according to claim 1 and 2 and character check demonstration device is characterized in that: adopt transparent material to make.
4. common gas preparation according to claim 1 and 2 and character check demonstration device, it is characterized in that: forward and backward two sides is the plane, two sides are circular shape.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201775902U CN201707823U (en) | 2010-05-01 | 2010-05-01 | Common gas preparation and property checking demonstrator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201775902U CN201707823U (en) | 2010-05-01 | 2010-05-01 | Common gas preparation and property checking demonstrator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201707823U true CN201707823U (en) | 2011-01-12 |
Family
ID=43444978
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010201775902U Expired - Fee Related CN201707823U (en) | 2010-05-01 | 2010-05-01 | Common gas preparation and property checking demonstrator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201707823U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108630079A (en) * | 2018-05-16 | 2018-10-09 | 贵州大学 | A kind of chemistry fountain experiment device |
-
2010
- 2010-05-01 CN CN2010201775902U patent/CN201707823U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108630079A (en) * | 2018-05-16 | 2018-10-09 | 贵州大学 | A kind of chemistry fountain experiment device |
| CN108630079B (en) * | 2018-05-16 | 2023-07-07 | 贵州大学 | Chemical fountain experimental device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110112 Termination date: 20110501 |