CN2364293Y

CN2364293Y - Gas pressure reducing valve capable of automatically cutting off gas source

Info

Publication number: CN2364293Y
Application number: CN 98251901
Authority: CN
Inventors: 王玉民
Original assignee: Individual
Current assignee: Individual
Priority date: 1998-12-24
Filing date: 1998-12-24
Publication date: 2000-02-16
Anticipated expiration: 2008-12-24

Abstract

The utility model discloses a gas pressure reducing valve capable of automatically cutting off a gas source. A connecting rod 8 is hinged on a cover sheet M of a pressure reducing device of a pressure reducing valve in the prior art; the other end of the connecting rod 8 is fixedly connected with a cone 4, the cross section of which is elliptical, and penetrate through a circular barrel C, a reinforced spring 5 positioned in the circular barrel and a pressure reducing shell body, wherein, the bottom of the circular barrel is provided with an opening. Two sliding chutes and positioning holes are arranged on both sides of the circular barrel; two positioning pins B and B' hinged on swing arms A and A' hinged on the shell body can be slippingly inserted into the positioning holes. Compared with a pressure-reducing valve of the prior art, an automatic cutting off device for the gas source can be added on the utility model; the operation is safe.

Description

Can cut off the combustion gas reduction valve of source of the gas automatically

The utility model relates to a kind of combustion gas reduction valve, particularly a kind of combustion gas reduction valve that can cut off source of the gas automatically.

The universal use of coal gas, really brought many facilities for people's life, but, see that with regard to present case the use of coal gas has also brought the problem of many sternnesses to people, all have every year the people dead because of gas leakage, the burns victims is more, its reason is because aging gas leakage of gaspipe line or mouse sting mashedly etc. mostly, up to the present, does not still have the harm that better product can be avoided coal gas effectively.

The purpose of this utility model is to overcome above-mentioned defective, and a kind of combustion gas reduction valve that can cut off source of the gas automatically is provided.

For achieving the above object, the combustion gas reduction valve that can cut off source of the gas automatically of the present utility model comprises housing, the mechanism of decompressor, gas-entered passageway, exhaust passage etc., it is a hinged connecting rod 8 on the mechanism of decompressor cover plate M of prior art reduction valve, the other end of described connecting rod 8 is that oval-shaped cone 4 is fixedlyed connected with the cross section, passes the circular cylinder C of lower openings, the brute spring 5 that is arranged in circular cylinder C and reduction valve housing more successively; Be provided with two chutes and positioning hole in the both sides of circular cylinder C, two locating stud B, B ' that swing arm A, the A ' that is hinged on the described housing upward is hinged can be slided and insert in the described positioning hole; On the axle of spinning roller 1 mechanical delay device 3 is installed.

The utility model is compared the mechanism that has increased automatic cut-out source of the gas with the reduction valve of prior art, uses more safe and reliable.

Description of drawings of the present utility model is as follows:

Fig. 1 is a structural representation of the present utility model.

Fig. 2 is that the N of round tube C of the present utility model is to view.

Fig. 3 is the sectional drawing of elliptical cone 4 of the present utility model.

Fig. 4 is the sectional view of elliptical cone 4 of the present utility model.

Fig. 5 is the partial enlarged drawing of the utility model and elliptical cone 4 associated parts.

Below in conjunction with accompanying drawing the utility model is described in further detail.

As shown in Figure 1, the combustion gas reduction valve that can cut off source of the gas automatically of the present utility model on the reduction valve of prior art, set up connecting rod 8, circular cylinder C, brute spring 5, locating stud B, B ', swing arm A, A ' and mechanical delay device 3, one end of described connecting rod 8 is that oval-shaped cone K is fixedlyed connected with the cross section, pass the circular cylinder C of lower openings, the brute spring 5 that is arranged in circular cylinder C and reduction valve housing more successively, hinged with the cover plate M of underpressure chamber; As shown in Figure 2, be provided with two chutes and positioning hole in the both sides of circular cylinder C, two locating stud B, B ' that described swing arm A, A ' upward are hinged can be slided and insert in the described positioning hole; On the axle of spinning roller 1 mechanical delay device 3 is installed.During ventilation, gas enters the underpressure chamber from pipe N, gas consumption hour, and the underpressure chamber internal pressure is big, and this pressure upwards pushes away cover plate M, and M drivening rod H upwards pushes away, thus the throughput of regulating suction tude N diminishes; Otherwise when gas consumption was big, the underpressure chamber internal pressure diminished, and stage clip 6 will push away under the cover plate M, and M promotes connecting rod H and descends, thereby the air-flow quantitative change of regulating suction tude N is big.

If will use combustion gas, at first spinning roller 1 is turned clockwise 90 ° and press, at this moment, delayer begins that effect, brute spring 5 are compressed, B and B ' with circular cylinder C pin, connecting rod 8 is in free state, treats working state thereby whole valve body is in.When finishing during useful air valve Close All with gas, the underpressure chamber internal pressure increases (than usefulness gas time a lot of greatly), M upwards pushes away with cover plate, because of connecting rod 8 and elliptical cone 4 are rigid connections, circular cone 4 also with on move, make swing arm A and A ' be pushed to both sides, driving locating stud B and B ' pulls out to both sides, thereby circular cylinder C is discharged, and spring 5 is upheld, with elliptical cone 4 jack-up, bar H is up, thereby at this moment pore closure, cut-out source of the gas with suction tude N, do not spill even the breathing pipe breakage is not also had coal gas.

Shown in Fig. 3,4,5, driving lever 9 inserts in two holes of elliptical cone 4, and the external diameter of driving lever 9 is slightly less than the aperture on the elliptical cone 4, and driving lever 9 is fixedlyed connected with delayer 3, delayer delay time 1 minute.

After turning clockwise and pressing spinning roller, need in 1 minute, use gas, otherwise, reduction valve under the effect of delayer with the reinstatement attitude, the cut-out source of the gas.Under particular case, as in the bathroom, using gas water-heater, may close water valve every now and then, so just do not need automatic closing function, (not so in case turn off, water boiling heater does not just have hot water again), in this case, spinning roller 1 can be rotated counterclockwise 90 ° and can temporarily remove automatic closing function.

When whole gas circuit the valve of useful utensil when all closing, make execution switch motion on the reduction valve because of having certain pressure, this pressure in the whole gas circuit, gas circuit is cut off, like this, just cut off source of the gas, even whole gas circuit is broken or breakage, can not leak gas yet, very safe and reliable, if will use combustion gas, as long as press spinning roller gently, combustion gas gets final product regular supply, when disposable gas, cuts off gas circuit at once automatically.

Claims

1. combustion gas reduction valve that can cut off source of the gas automatically, comprise housing, the mechanism of decompressor, gas-entered passageway, exhaust passage etc., it is characterized in that: it goes up a hinged connecting rod (8) at the mechanism of decompressor cover plate (M) of prior art reduction valve, the other end of described connecting rod (8) is that oval-shaped cone (4) is fixedlyed connected with the cross section, pass successively again lower openings circular cylinder (C), be arranged in brute spring (5) and the reduction valve housing of circular cylinder (C); Be provided with two chutes and positioning hole in the both sides of circular cylinder (C), two locating studs (B, B ') that the swing arm that is hinged on the described housing (A, A ') upward is hinged can be slided and insert in the described positioning hole; On the axle of spinning roller (1) mechanical delay device (3) is installed.

2. the combustion gas reduction valve that can cut off source of the gas automatically according to claim 1 is characterized in that: reduction torsion spring (7) is equipped with in the lower end of described two swing arms (A, A ').

3. the combustion gas reduction valve that can cut off source of the gas automatically according to claim 1 is characterized in that: the core of elliptical cone (4) is inserted with two driving levers (9).