CN2178819Y - Oil sealed quick open-close gas valve - Google Patents

Abstract

The utility model relates to an oil sealing rapid open-close gas plate valve, which comprises a valve body, a valve plate, a valve rod, a hand wheel, an indicating mechanism, etc. The utility model is mainly characterized in that the inner portion of a bottom base is provided with a top wedge. A valve body and an expansion block are connected by a spring. The outer portion of the valve body is provided with an oil filling pipe and the inner portion is provided with an oil guiding hole. A gate plate is provided with a sealing oil ring. When the valve is opened or closed, the valve plate rapidly moves to automatically eliminate the soil on a sealing surface and conduct tight pressing sealing by the expansion force of the spring. Meanwhile, the grease in the oil filling pipe enters into the valve body and the gate plate forms oil sealing which is the secondary sealing. The utility model can obtain full sealing without leakage. The utility model has rapid closing and opening speed, energy saving and work efficiency increase. The operation of the entire pipeline does not need to be stopped in maintenance.

Description

Oil sealed quick open-close gas valve

The utility model relates to valve, particularly relates to gate valve.

Current, be used for the gate valve of gas pipe line, generally all be to go up top wedge structure, operator require great effort when operated valve very much.Simultaneously, it is slower that valve opens and closes speed, and particularly when gas leakage, valve can not be closed soon.The sealing surface of valve body and flashboard is once sealing firmly, and coal gas causes the sealing surface coking easily and influences sealability in pipe when mobile, and the coking body is deposited in valve body cavity bottom, makes flashboard be difficult to put in place and influences the keying position and the sealability of valve.

The purpose of this utility model is to provide a kind of oil sealing fast opening and closing gas gate valve, and it is that a kind of valve body and flashboard adopt secondary seal and replace the gate valve of going up top wedge structure with following top wedge structure.

The technical solution of the utility model realizes as follows:

The utility model is made up of base, valve body, flashboard, Stem Mut, valve body, indicating device, handwheel etc., and the upper end of valve body is connected with a valve gap, and the lower end links to each other with base, has a top to carve in the base; Valve rod, flashboard are arranged in valve gap and the valve body, and the end face of valve body and the end face of flashboard are sealing surface, and the upper end of flashboard links to each other with an end of valve rod, and the other end of valve rod is connected with indicating device, handwheel; There is the piece that rises the outside of the lower end of flashboard, and the spring piece that will rise is connected in the outside of flashboard lower end; One oil guiding hole is arranged on the valve body, a seal oil ring is arranged on the flashboard, oil filling pipe is on the end face at valve body top.

Advantage of the present utility model is as follows:

Of the present utility model rational in infrastructure, operator's rapid operation, the keying speed of valve can reach sealing fully than original fast 3 times and valve not to be had and leaks.Therefore when carrying out the pipeline maintenance, do not need whole pipe out of service, only need close this valve and can overhaul, energy saving has improved working efficiency like this.

Embodiment in conjunction with the accompanying drawings is further described the utility model:

Fig. 1: oil sealing fast opening and closing gas gate valve structural representation

Fig. 2: oil seal structure I schematic representation

Among Fig. 1-2: base (1), top wedge (2), valve body (3), flashboard (4), spring (5), the piece that rises (6), Stem Mut (7), valve rod (8), oil guide pipe (9), valve gap (10), oil filling pipe (11), indicating device (12), handwheel (13), oil guiding hole (14), sealing lubricating cup (15), sealing surface (16).

Handwheel (13) turns clockwise, valve rod (8) moves down, flashboard (4) is displaced downwardly to top wedge (2) thereupon, the tension force of spring (5) makes flashboard (4) compress sealing surface (16) and can remove dirt on the sealing surface (16) automatically, this moment, the tension by the piece that rises (6) compressed sealing surface (16), realize sealing, i.e. sealing for the first time; Simultaneously, oil enters oil guiding hole (14) on the valve body (3) by oil filling pipe (11), enters the seal oil ring (15) on the flashboard (4) again, makes flashboard (4) and sealing surface (16) realize sealing fully, i.e. secondary seal.Valve cuts out, and cuts off the path of coal gas.

Be rotated counterclockwise handwheel (13), valve rod moves on (8), and flashboard (4) is entered in valve gap (10) body cavity fully, and two sealing surfaces (16) are subjected to hiding protection, at this moment, opening of valves, coal gas circulates in pipeline.

Claims (1)

1, a kind of oil sealing fast opening and closing gas valve is made up of valve body (3), flashboard (4), valve rod (8), handwheel (13), it is characterized in that:

(a), the upper end of valve body (3) is connected with a valve gap (10), the lower end is connected with a base (1), and top wedge (2) is arranged in the base (1);

(b), in valve gap (10), the valve body (3) valve rod (8), flashboard (4) are arranged, the end face of valve body (3) interior edge face and flashboard (4) is sealing surface (16), the upper end of flashboard (4) links to each other with an end of valve rod (8), the other end of valve rod (8) links to each other with indicating device (12), handwheel (13), and the piece that rises (6) of the outside of flashboard (4) lower end connects by spring (5);

(c) on the valve body (3) oil guiding hole (14) is arranged, seal oil ring (15) is arranged on the flashboard (4), oil filling pipe (16) is at valve body (3) top.

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