CN202512780U

CN202512780U - Air compression igniter

Info

Publication number: CN202512780U
Application number: CN2012201181265U
Authority: CN
Inventors: 刘小兵
Original assignee: Individual
Current assignee: Individual
Priority date: 2012-03-27
Filing date: 2012-03-27
Publication date: 2012-10-31
Anticipated expiration: 2022-03-27

Abstract

The utility model discloses an air compression igniter, which comprises an air cylinder. The air cylinder is a split-type air cylinder formed by detachably and hermetically assembling a transparent or semitransparent cylinder block with a cylinder base; the cylinder base is provided with a pressure relief device used for discharging high-pressure detonation gas in the cylinder block; the pressure relief device comprises a sealing plug and a spring mechanism capable of adjusting elasticity; and the sealing plug is tightly butted to a pressure relief passage outlet arranged on the cylinder base by the spring mechanism. According to the air compression igniter disclosed by the utility model, as the split-type air cylinder is adopted, a cotton ball can be directly put on the bottom part of the cylinder block of the air cylinder and is kept fluffy, and moreover, waste residues can be easily cleaned, and the experimental success rate is greatly increased. As the pressure relief device is also arranged, high pressure generated by ignition combustion can be discharged in time, therefore, the igniter cannot be damaged and is prolonged in service life, and the safety of the igniter is enhanced so as to ensure the safety of an experimenter.

Description

Air compresses the appearance of igniting

(1) technical field:

The utility model relates to the middle school teaching demonstrating experiment device, is specially the utensil of a kind of demonstration " acting is a kind of mode of ability in changing ", and promptly air compresses the appearance of igniting.

(2) background technology:

The principle that pressurized air is ignited be since the air in the cylinder when pressing down piston rapidly by sharply compression, piston is converted into the interior ability of air to the air work, and air themperature is raise, thus the kindling point that reaches ether makes the cotton-wool burning that speckles with ether.

The existing pressurized air appearance of igniting exists experiment success rate low, and the phenomenon of cylinder explosion often takes place, and tracing it to its cause mainly contains:

1, cotton-wool need be put into from the cylinder port at top, is not easy to be put into cylinder bottom, and is stained with the lubricating oil on the cylinder inner wall easily and makes cotton-wool fluffy inadequately and be difficult to catch fire.

2, waste gas, the waste residue in the experiment exhaust hood is difficult to discharge, and fresh air can not get into cylinder smoothly.

3, because cylinder does not have pressure relief device, cause cylinder, easily operator and observer are damaged usually owing to superpressure bursts.

(3) utility model content:

To the ignite weak point of appearance of conventional compression air, the purpose of the utility model is the air compression that proposed a kind ofly to improve experiment success rate, manipulated safety and the easy to clean appearance of igniting.

The air that can realize above-mentioned purpose compresses the appearance of igniting, and comprises cylinder, and different is that said cylinder is the detachable split type cylinder of assembling with sealing of cylinder body and cylinder seat, and said cylinder seat is provided with the pressure relief device of discharging cylinder body inner high voltage detonation gas.

When cylinder split, cotton-wool can directly be put on cylinder block bottom and the cylinder seat; Cotton-wool instancy of ignition detonation high pressure gas can be got rid of from pressure relief device smoothly, makes cylinder keep normal atmospheric pressure value.

A kind of simple structure of said pressure relief device comprises sealing-plug and the spring device that can adjust the elastic force size; Said spring device pushes against the pressure release passage outlet that sealing-plug is offered on the cylinder seat; The detonation high pressure gas greater than sealing-plug push against power the time, the sealing-plug pressure release that is open.

Said spring device comprises compression spring, elastic force adjustment screw rod and elastic force adjustment screw bolt seat; Elastic force adjustment screw rod and elastic force adjustment screw bolt seat threaded engagement; Said compression spring is set in elastic force adjustment screw rod and pushes against sealing-plug; The tightening and unscrew of elastic force adjustment screw rod corresponding to the increase of compression spring strength with reduce, changes the pressure release value of pressure relief device with this.

Cylinder seat bottom is located in the installation of pressure relief device for the benefit of and do not influence the placement of cylinder in the said pressure relief device, said pressure release passage connects the top and bottom of cylinder seat.

For ease of the situation of igniting of observation cotton-wool and the stroke of regulating piston bar, said cylinder adopts transparent or semitransparent cylinder body.

The advantage of the utility model:

1, the utility model air compression is ignited appearance owing to adopted split type cylinder, cotton-wool can directly be put into the cylinder block bottom and keep fluffy state, and waste residue clears up easily, and the success ratio of experiment increases greatly.

2, the utility model air compression appearance of igniting also is provided with pressure relief device, can in time discharge the high pressure that the burning of igniting produces, and guarantees that cylinder is not damaged to increase the service life, and the security of instrument increases to ensure experimenter's safety.

3, the utility model air compresses the transparent or opaque split type cylinder of appearance employing of igniting; Observation experiment phenomenon directly perceived; And the stroke of regulating piston bar directly perceived, make the extreme lower position of piston and the space between the cylinder seat very little, guarantee when experiment, can the air in the cylinder be compressed to very little volume; Can realize very big ratio of compression, be beneficial to the burning-point that makes compressed air themperature reach ether.

(4) description of drawings:

Fig. 1 is the one-piece construction block diagram of a kind of embodiment of the utility model.

Figure number sign: 1, cylinder body; 2, cylinder seat; 3, sealing-plug; 4, compression spring; 5, elastic force adjustment screw rod; 6, elastic force adjustment screw bolt seat; 7, piston; 8, piston rod; 9, cushion pad; 10, pressure release passage; 11, control crank; 12, cylinder cap.

(5) embodiment:

Be described further below in conjunction with the technical scheme of accompanying drawing the utility model:

The utility model air compression appearance of igniting is the cylinder that is made up of transparent or semitransparent cylinder body 1, cylinder seat 2, piston 7 and piston rod 8; Said cylinder is split type cylinder; Be that cylinder body 1 end opening and the cylinder seat 2 (through being threaded) suitable for reading of cylinder is detachable and can be assembled into one by disassembled form; O-ring seal is set between cylinder body 1 after the assembling and the cylinder seat 2 guarantees that gas does not leak, as shown in Figure 1.

Said piston 7 is matched with in the cylinder body 1, and said piston rod 8 connects piston 7 from cylinder body 1 entering suitable for reading, and cylinder body 1 outer piston rod 8 terminations are provided with control crank 11, and cylinder body 1 setting suitable for reading (being threaded) cylinder cap 12 is provided with cushion pad 9 on the cylinder cap 12; Endoporus is inwardly offered in said cylinder seat 2 bottoms, and the pressure release passage 10 of perforation is offered in the top of cylinder seat 2 and bottom, and is in cylinder seat 2 set inside pressure relief devices, as shown in Figure 1 corresponding to pressure release passage 10.

Said pressure relief device is made up of sealing-plug 3, compression spring 4, elastic force adjustment screw rod 5 and elastic force adjustment screw bolt seat 6; Said sealing-plug 3 is located at pressure release passage 10 exits; Said elastic force adjustment screw bolt seat 6 is horizontal fixing in cylinder seat 2 endoporus; Said elastic force adjustment screw rod 5 is connected with elastic force adjustment screw bolt seat 6 up; The thread segment that is elastic force adjustment screw rod 5 cooperates with the center internal thread hole of elastic force adjustment screw bolt seat 6, and said compression spring 4 is set in the thread segment of elastic force adjustment screw rod 5, and compression spring 4 pretensions are between the thread segment and sealing-plug 3 of elastic force adjustment screw rod 5; The outlet that the acting force of compression spring 4 stops up pressure release passage 10 with sealing-plug 3, as shown in Figure 1.

The experimentation of the utility model:

1, the stroke of piston rod 8 is adjusted in experiment beginning, the cylinder body 1 and the cylinder seat 2 of separation cylinder, and the cotton-wool that will speckle with ether to place cylinder body 1 bottom be the top of cylinder seat 2.

2,

cylinder body

1 and 2 assemblings of cylinder seat, assembling secondary piston bar 8 upwards lifts piston 7.

3, depress piston rod 8 downwards fast, the air of piston 7 in cylinder seat 2 motion compresses cylinder bodies 1.

4, piston 7 arrives and sets strokes, the cotton-wool detonation of catching fire, and the detonation gas that the cotton-wool burning produces is pushed sealing-plug 3 open and is discharged from pressure release passage 10.

5, split the cylinder body 1 and the cylinder seat 2 of cylinder, the combustion residue on the cleaning cylinder seat 2, experiment finishes.

Claims

1. air compresses the appearance of igniting, and comprises cylinder, it is characterized in that: said cylinder is cylinder body (1) and the detachable split type cylinder of assembling with sealing of cylinder seat (2), and said cylinder seat (2) is provided with the pressure relief device of discharge cylinder body (1) inner high voltage detonation gas.

2. air according to claim 1 compresses the appearance of igniting; It is characterized in that: said pressure relief device comprises sealing-plug (3) and can adjust the spring device of elastic force size that said spring device pushes against pressure release passage (10) outlet that sealing-plug (3) is offered on cylinder seat (2).

3. air according to claim 2 compresses the appearance of igniting; It is characterized in that: said spring device comprises compression spring (4), elastic force adjustment screw rod (5) and elastic force adjustment screw bolt seat (6); The threaded engagement of elastic force adjustment screw rod (5) and elastic force adjustment screw bolt seat (6), said compression spring (4) are set in elastic force adjustment screw rod (5) and push against sealing-plug (3).

4. air according to claim 3 compresses the appearance of igniting, and it is characterized in that: be located at cylinder seat (2) bottom in the said spring device, said pressure release passage (10) connects the top and bottom of cylinder seat (2).

5. compress the appearance of igniting according to any one described air in the claim 1～4, it is characterized in that: said cylinder adopts transparent or semitransparent cylinder body (1).