CN205264207U

CN205264207U - Probe improved generation experimental apparatus of burning condition

Info

Publication number: CN205264207U
Application number: CN201620029587.3U
Authority: CN
Inventors: 林师龙
Original assignee: Individual
Current assignee: Individual
Priority date: 2016-01-13
Filing date: 2016-01-13
Publication date: 2016-05-25
Anticipated expiration: 2026-01-13

Abstract

(B, ) the utility model provides a probe improved generation experimental apparatus of burning condition, its main characterized in that: it is by syringe (b) (b) 1 (b) (b), take spring clamp (b) (b) 2 (b) (b's) emulsion tube (b) (b) 3 (b) (b), air duct (b) (b) 4 (b) (b), long neck funnel (b) (b) 5 (b) (b), rubber stopper (b) (b) 6 (b) (b), the first burning spoon (b) (b) 7 (b) (b) of red phosphorus (b) (b) 8 (b) (b) is equipped with, hydrothermal wide -necked bottle (b) (b) 9 (b) (b) is equipped with, the second burning spoon (b) (b) 11 (b) (b) that is equipped with white phosphorus (b) (b) 10 (b) (b) is constituteed. Take air duct (b) (b) 4 (b) (b), long neck funnel (b) (b) 5 (b) (b), rubber stopper (b) (b) 6 (b) (b) the stopper of first burning spoon (b) (b) 7 (b) (b) and second burning spoon (b) (b) 11 (b) (b) tightly is equipped with hydrothermal wide -necked bottle (b) (b) 9 (b) (b), red phosphorus (b) (b) 8 (b) (b) is adorned to first burning spoon (b) (b) 7 (b) (b) lining, white phosphorus (b) (b) 10 (b) (b) is adorned to second burning spoon (b) (b) 11 (b) (b) lining. Take spring clamp (b) (b) 2 (b) (b's) emulsion tube (b) (b) 3 (b) (b) to connect the air duct (b) (b) 4 (b) (b) of rubber stopper (b) (b) 6 (b) (b) outer end and the nipple of syringe (b) (b) 1 (b) (b). The textbook device has the defect: not environmental protection, it is grouping experiment not to be suitable for the student. Use the utility model discloses can overcome the not enough of textbook device completely. (B, )

Description

Probe into the modified experimental provision of burning condition

One, technical field

The utility model belongs to chemical field, relates to a kind of chemical experiment device, and concrete is the experiment of probing into combustible burning condition on junior middle school chemistry textbook for demonstrating.

Two, background technology

The 99th page of exercise of ninth grade chemistry textbook of publishing Shanghai education publishing house in January, 2012 and the experiment of putting into practice in the 2nd topic: in a large beaker that hot water is housed, put a white phosphorus, beaker upper cover one copper sheet, white phosphorus is put in one end of copper sheet, and the other end is put red phosphorus. By observing the white phosphorus burning on copper sheet, red phosphorus does not burn to prove that combustible burning need meet two conditions simultaneously: 1, combustible contacts with oxygen; 2, the temperature of combustible will reach ignition point. Do experiment with textbook device and have defect: when 1, the white phosphorus on copper sheet burns, produce a large amount of white cigarettes and pollute the environment. The heat of emitting when 2, white phosphorus burns is passed to red phosphorus by copper sheet, and the temperature of red phosphorus likely reaches ignition point and blazes up. 3, when white phosphorus burns, splash everywhere and also may make red phosphorus blaze up and produce more white cigarette. 4, textbook device is not suitable for student and does grouping experiment.

Three, utility model content

The purpose of this utility model is to provide the modified experimental provision of probing into burning condition. The utility model is not only applicable to do lecture experiment on classroom, is also applicable to student and does grouping experiment, safety, environmental protection, pollution-free.

The purpose of this utility model realizes by the following method:

The modified experimental provision of probing into burning condition, is primarily characterized in that: it is made up of emulsion tube (3), wireway (4), long neck funnel (5), the rubber stopper (6) of syringe (1), band spring clip (2), the first combustion spoon (7) that red phosphorus (8) is housed, the wide-mouth bottle (9) that hot water is housed, the second combustion spoon (11) that white phosphorus (10) is housed.

Rubber stopper (6) jam-pack of band wireway (4), long neck funnel (5), the first combustion spoon (7) and the second combustion spoon (11) is equipped with wide-mouth bottle (9) bottleneck of hot water, the inner red phosphorus (8) that is equipped with of the first combustion spoon (7), the inner white phosphorus (10) that is equipped with of the second combustion spoon (11), white phosphorus (10) and red phosphorus (8) are positioned under liquid level. The emulsion tube (3) of band spring clip (2) connects the wireway (4) of rubber stopper (6) outer end and the nipple of syringe (1).

Experimentation: connect instrument, the air-tightness of testing fixture. wireway (4), long neck funnel (5), the first combustion spoon (7) and the second combustion spoon (11) are inserted in respectively on rubber stopper (6), at the inner red phosphorus (8) that fills of the first combustion spoon (7), the inner white phosphorus (10) that fills of the second combustion spoon (11), fill appropriate hot water at wide-mouth bottle (9), then wide-mouth bottle (9) bottleneck of hot water is housed with rubber stopper (6) jam-pack of band wireway (4), long neck funnel (5), the first combustion spoon (7) and the second combustion spoon (11), and white phosphorus (10) and red phosphorus (8) are positioned under liquid level. with emulsion tube (3) the connection wireway (4) of rubber stopper (6) outer end and the nipple of syringe (1) of band spring clip (2), the inner air that is full of of syringe (1). just start because red phosphorus (8) and white phosphorus (10) are all positioned under liquid level, do not contact with oxygen, so the red phosphorus (8) while beginning in the first combustion spoon (7) and the white phosphorus (10) in the second combustion spoon (11) do not burn, this proves that burning need to have oxygen to participate in. then open spring clip (2), touch syringe (1), air in syringe (1) enters in wide-mouth bottle (9), at this moment can see that the liquid level in wide-mouth bottle (9) declines, liquid level in long neck funnel (5) rises, in the time that white phosphorus (10) and red phosphorus (8) expose liquid level and contact with air, white phosphorus (10) blazes up immediately, produce a large amount of white cigarettes, and red phosphorus (8) does not still burn, this is because white phosphorus (10) temperature of soaking in hot water has reached ignition point, while contact with air again in the time that white phosphorus (10) exposes liquid level, white phosphorus (10) blazes up, and the ignition point of red phosphorus is higher, more than hot water cannot be heated to ignition point by the temperature of red phosphorus (8), so red phosphorus (8) does not burn. when the piston of the syringe that pulls outward (1), it is inner that the part air of wide-mouth bottle (9) is inhaled into syringe (1), and the liquid level in long neck funnel (5) declines, and the liquid level in wide-mouth bottle (9) rises, in the time of hot water submergence white phosphorus (10), the white phosphorus (10) firing extinguishes immediately. above phenomenon fully proves that combustible burning need to meet two conditions simultaneously: 1, combustible contacts with oxygen, 2, the temperature of combustible will reach ignition point.

The beneficial effects of the utility model are: 1, probe into the experiment of combustible burning condition with the utility model demonstration, because white phosphorus burns in closed container, the white cigarette producing is dissolved in hot water and generates nontoxic phosphoric acid with hot water reaction, is difficult for being diffused in air, has therefore reduced environmental pollution. 2, can occur at any time to stop at any time by syringe control reaction, save medicine. 3, the utility model highly versatile, can reuse, and is not only suitable on classroom and does lecture experiment, is also suitable for student and does grouping experiment.

Four, brief description of the drawings

Fig. 1 is structure chart of the present utility model.

Mark in figure represents respectively:

(1) syringe (2) spring clip (3) emulsion tube (4) wireway (5) long neck funnel (6) rubber stopper (7) first combustion spoon (8) red phosphorus (9) are equipped with wide-mouth bottle (10) white phosphorus (11) second combustion spoons of hot water

Five, detailed description of the invention

Below in conjunction with detailed description of the invention, the utility model is described in further detail:

Using method of the present utility model: connect instrument, the air-tightness of testing fixture. wireway (4), long neck funnel (5), the first combustion spoon (7) and the second combustion spoon (11) are inserted in respectively on rubber stopper (6), at the inner red phosphorus (8) that fills of the first combustion spoon (7), the inner white phosphorus (10) that fills of the second combustion spoon (11), fill appropriate hot water at wide-mouth bottle (9), then wide-mouth bottle (9) bottleneck of hot water is housed with rubber stopper (6) jam-pack of band wireway (4), long neck funnel (5), the first combustion spoon (7) and the second combustion spoon (11), and white phosphorus (10) and red phosphorus (8) are positioned under liquid level. with emulsion tube (3) the connection wireway (4) of rubber stopper (6) outer end and the nipple of syringe (1) of band spring clip (2), the inner air that is full of of syringe (1). just start because red phosphorus (8) and white phosphorus (10) are all positioned under liquid level, do not contact with oxygen, so the red phosphorus (8) while beginning in the first combustion spoon (7) and the white phosphorus (10) in the second combustion spoon (11) do not burn, this proves that burning need to have oxygen to participate in. then open spring clip (2), touch syringe (1), air in syringe (1) enters in wide-mouth bottle (9), at this moment can see that the liquid level in wide-mouth bottle (9) declines, liquid level in long neck funnel (5) rises, in the time that white phosphorus (10) and red phosphorus (8) expose liquid level and contact with air, white phosphorus (10) blazes up immediately, produce a large amount of white cigarettes, and red phosphorus (8) does not still burn, this is because white phosphorus (10) temperature of soaking in hot water has reached ignition point, while contact with air again in the time that white phosphorus (10) exposes liquid level, white phosphorus (10) blazes up, and the ignition point of red phosphorus is higher, more than hot water cannot be heated to ignition point by the temperature of red phosphorus (8), so red phosphorus (8) does not burn. when the piston of the syringe that pulls outward (1), it is inner that the part air of wide-mouth bottle (9) is inhaled into syringe (1), and the liquid level in long neck funnel (5) declines, and the liquid level in wide-mouth bottle (9) rises, in the time of hot water submergence white phosphorus (10), the white phosphorus (10) firing extinguishes immediately. above phenomenon fully proves that combustible burning need to meet two conditions simultaneously: 1, combustible contacts with oxygen, 2, the temperature of combustible will reach ignition point. the utility model has the advantages that: environmental protection, safe, pollution-free, can occur at any time to stop at any time by syringe control reaction, save medicine, the utility model highly versatile, can reuse, and is not only suitable on classroom and does lecture experiment, is also suitable for student and does grouping experiment.

Claims

1. probe into the modified experimental provision of burning condition, be primarily characterized in that: it is by syringe (1), the emulsion tube (3) of band spring clip (2), wireway (4), long neck funnel (5), rubber stopper (6), first combustion spoon (7) of red phosphorus (8) is housed, the wide-mouth bottle (9) of hot water is housed, the second combustion spoon (11) composition of white phosphorus (10) is housed, band wireway (4), long neck funnel (5), rubber stopper (6) jam-pack of the first combustion spoon (7) and the second combustion spoon (11) is equipped with wide-mouth bottle (9) bottleneck of hot water, the inner red phosphorus (8) that fills of the first combustion spoon (7), the inner white phosphorus (10) that fills of the second combustion spoon (11), the emulsion tube (3) of band spring clip (2) connects the wireway (4) of rubber stopper (6) outer end and the nipple of syringe (1).