CN203870874U

CN203870874U - Acetylene preparation and property examination apparatus

Info

Publication number: CN203870874U
Application number: CN201420156638.XU
Authority: CN
Inventors: 尚凡滟
Original assignee: Individual
Current assignee: Individual
Priority date: 2014-04-02
Filing date: 2014-04-02
Publication date: 2014-10-08
Anticipated expiration: 2024-04-02

Abstract

The utility model discloses an acetylene preparation and property examination apparatus. The apparatus comprises an acetylene preparation device and an acetylene property examination device. The acetylene preparation device comprises a wide-mouth bottle, a single-hole rubber stopper, an iron wire, a gauze bag and a glass t-branch pipe. The acetylene property examination device comprises a sharp nose gas-guide tube, a rubber tube, a water sealing clamp, a right angle gas-guide tube, a branch-pipe-equipped test tube and a test tube. The advantages are as follows: an experiment apparatus is simple and compact, and the experiment operation is convenient; the reaction rate is controllable, and gases can be prepared at any time and used at any time; impurities are removed timely, and it is ensured that the examination process of acetylene properties is not influenced by impurity gases; and an experiment phenomenon is obvious, environmental conservation is high, and the classroom experiment teaching quality and efficiency are effectively improved.

Description

A kind of acetylene preparation and property checking device

Technical field

The utility model relates to a kind of middle school chemistry experiment teaching field, especially a kind of acetylene preparation and property checking device.

Background technology

Acetylene, is commonly called as acetylene, is a kind of gas colourless, that very easily fire under normal temperature, and pure acetylene is odorless, but industrial acetylene is owing to containing the impurity such as sulfuretted hydrogen, hydrogen phosphide, has the smell of one garlic.The chemical property of acetylene is very active, can play the reactions such as addition, oxidation, polymerization and metal replacement, acetylene can and cut off metal for illumination, welding, is also the base stock of manufacturing acetaldehyde, acetic acid, benzene, synthetic rubber, synthon etc., has application extremely widely.

In laboratory of middle school, conventionally dropwise react and make acetylene gas to calcium carbide dropping saturated aqueous common salt with separating funnel, reaction equation is: CaS+2H ₂o=Ca (OH) ₂+ H ₂s.Replace after water with saturated aqueous common salt, reaction rate is still very fast, is difficult to control, and the acetylene air-flow of generation is also steady not, and reaction Once you begin just cannot stop, once student operates not in time, even collecting less than acetylene, and producing great medicine wastes; In course of reaction, produce a large amount of foams, infiltrate cotton mass enters wireway sometimes, even conduit is stopped up; Along with the carrying out of reaction, bottle internal gas pressure increases, and the saturated aqueous common salt in separating funnel can not drip, and can make to be mixed with on the contrary H ₂s, AsH ₃, PH ₃deng foul gas overflow from separating funnel, contaminated environment; In addition, because reaction rate is uncontrollable, the preparation of gas and the inspection of gas property cannot disposablely complete, and have affected efficiency of teaching, are unfavorable for carrying out smoothly of education experiment.

Summary of the invention

The purpose of this utility model is for overcoming above-mentioned the deficiencies in the prior art, and a kind of preparation and property checking device of acetylene is provided, it has, and device is simple, gas with system with, reaction with opening with closing, the feature such as saving medicine and environment-friendly high-efficiency.

For achieving the above object, the utility model adopts following technical proposals:

A kind of acetylene preparation and property checking device, comprise acetylene preparation facilities and acetylene property checking device, described acetylene preparation facilities comprises wide-necked bottle, single hole rubber plug, iron wire, bundle and glass three-way pipe, and one end of described iron wire is provided with described bundle, and puts in described wide-necked bottle; Described acetylene property checking device comprises that sharp gas guide nozzle pipe, rubber tube, tongs, right angle wireway, tool prop up test tube and test tube, two mutually perpendicular mouths of pipe of described glass three-way pipe are all connected with described sharp gas guide nozzle pipe with described right angle wireway respectively by rubber tube, another mouth of pipe of described glass three-way pipe puts in described wide-necked bottle, and the mouth of pipe that described test tube props up test tube by described right angle wireway and described rubber tube and described tool is connected.

The mouth of pipe that stretches into the described glass three-way pipe of described wide-necked bottle one end exposes described single hole rubber plug.

The bottom that described right angle wireway puts in respectively described tool and props up test tube and described test tube.

Described wide-necked bottle specification is 500Ml.

The mouth of pipe that described single hole rubber plug props up test tube and described test tube with described wide-necked bottle, described tool respectively matches.

The beneficial effects of the utility model are,

(1) experimental provision is simply compact, facilitates student to operate;

(2) ethanol substitutes saturated aqueous common salt as reactant, can better control reaction rate, makes air-flow more steady;

(3) remove in time the foreign gas that reductibility is stronger than acetylene, as H ₂s, PH ₃deng the impact on acetylene property checking, avoided the pollution of irritative gas to environment simultaneously;

(4) disposable preparation and the property checking that completes gas, experimental phenomena is obviously visible, whole experimentation realized gas with system with, reaction with driveing with pass, save experimental drug, raising efficiency of teaching.

Brief description of the drawings

Fig. 1 is the utility model structural representation.

Wherein 1. wide-necked bottles, 2. iron wire, 3. single hole rubber plug, 4. bundle, 5. glass three-way pipe, 6. tongs, 7. tool props up test tube, 8. right angle wireway, 9. test tube, 10. sharp gas guide nozzle pipe, 11. rubber tubes.

Embodiment

Below in conjunction with drawings and Examples, the utility model is further illustrated.

A kind of acetylene preparation and property checking device, as shown in Figure 1, comprise acetylene preparation facilities and acetylene property checking device, acetylene preparation facilities comprises wide-necked bottle 1, single hole rubber plug 3, iron wire 2, bundle 4 and glass three-way pipe 5, one end of iron wire 2 is provided with bundle 4, and puts in wide-necked bottle 1; Acetylene property checking device comprises that sharp gas guide nozzle pipe 10, rubber tube 11, tongs 6, right angle wireway 8, tool prop up test tube 7 and test tube 9, two mutually perpendicular mouths of pipe of glass three-way pipe 5 are all connected with sharp gas guide nozzle pipe 10 with right angle wireway 8 respectively by rubber tube 11, another mouth of pipe of glass three-way pipe 5 puts in wide-necked bottle 1, and the mouth of pipe that test tube 9 props up test tube 7 by right angle wireway 8 and rubber tube 11 and tool is connected.

The mouth of pipe that stretches into the glass three-way pipe 5 of wide-necked bottle 1 one end exposes single hole rubber plug 3; The bottom that right angle wireway 8 stretches into respectively tool and props up test tube 7 and test tube 9; Wide-necked bottle 1 specification is 500Ml; The mouth of pipe that single hole rubber plug 3 props up test tube 7 and test tube 9 with wide-necked bottle 1, tool respectively matches.

Experimentation:

(1) respectively to 1 mixed liquor that adds appropriate copper sulphate and ethanolic solution in wide-necked bottle, to tool prop up in test tube 7, add suitable

The bromine aqueous solution of amount adds appropriate liquor potassic permanganate in test tube 9; Wrap a calcium carbide with bundle 4, Gu

Fix on one end of iron wire 2;

(2) according to Experimental equipment, each instrument is connected, and check the impermeability of single unit system;

(3) promote iron wire 2 and move downward, the calcium carbide in bundle 4 is immersed in the mixed liquor of copper sulphate and ethanol, start reaction and produce acetylene gas; Need to stop reacting time, only iron wire 4 upwards need be pulled, can stop this reaction;

(4) light the gas of generation at sharp gas guide nozzle pipe 10 places, the flame color while observing acetylene gas burning, closes tongs 6 herein;

(5) open with horizontal direction on tongs 6, make the gas producing enter successively tool by right angle wireway 8 and prop up test tube 7 and test tube 9, observation experiment phenomenon.

By reference to the accompanying drawings embodiment of the present utility model is described although above-mentioned; but the not restriction to the utility model protection domain; one of ordinary skill in the art should be understood that; on the basis of the technical solution of the utility model, those skilled in the art do not need to pay various amendments that creative work can make or distortion still in protection domain of the present utility model.

Claims

1. an acetylene is prepared and property checking device, comprise acetylene preparation facilities and acetylene property checking device, it is characterized in that, described acetylene preparation facilities comprises wide-necked bottle, single hole rubber plug, iron wire, bundle and glass three-way pipe, one end of described iron wire is provided with described bundle, and puts in described wide-necked bottle; Described acetylene property checking device comprises that sharp gas guide nozzle pipe, rubber tube, tongs, right angle wireway, tool prop up test tube and test tube, two mutually perpendicular mouths of pipe of described glass three-way pipe are all connected with described sharp gas guide nozzle pipe with described right angle wireway respectively by rubber tube, another mouth of pipe of described glass three-way pipe puts in described wide-necked bottle, and the mouth of pipe that described test tube props up test tube by described right angle wireway and described rubber tube and described tool is connected.

2. a kind of acetylene preparation as claimed in claim 1 and property checking device, is characterized in that, the mouth of pipe that stretches into the described glass three-way pipe of described wide-necked bottle one end exposes described single hole rubber plug.

3. a kind of acetylene preparation as claimed in claim 1 and property checking device, is characterized in that, the bottom that described right angle wireway puts in respectively described tool and props up test tube and described test tube.

4. a kind of acetylene preparation as claimed in claim 1 and property checking device, is characterized in that, described wide-necked bottle specification is 500Ml.

5. a kind of acetylene preparation as claimed in claim 1 and property checking device, is characterized in that, the mouth of pipe that described single hole rubber plug props up test tube and described test tube with described wide-necked bottle, described tool respectively matches.