CN205155219U - Gas valve - Google Patents

Abstract

The utility model relates to the technical field of valves, specifically be a gas valve, which comprises the following components: a valve body, the valve body in be equipped with the case, be used for driving the valve rod of case and be used for respectively two sealed pads the at sealed case both ends, the valve body is connected with the valve cap, the surface of case is the arc form, sealed stacking up be equipped with annular bracing ring, be equipped with the first conical surface on the bracing ring, the valve rod on be equipped with the equipartition and have a plurality of annular ring, the distance between the arbitrary adjacent two rings shape circle is the same, and constitutes the ring channel between the two rings of the arbitrary jingle bell shape circle, the cover is equipped with the sealing washer on the ring channel. The utility model discloses simple structure, the practicality is strong.

Description

a gas valve

technical field

The utility model relates to the technical field of valves, in particular to a gas valve.

Background technique

At present, the general structure of the gas valve adopted at home and abroad is: a pair of gaskets are arranged on the contact surface between the valve core and the inlet end and the outlet end, so as to achieve the purpose of sealing. However, as the number of times the gas valve is used increases, it is easy to cause wear of the gasket, causing gas leakage at the joint between the valve core and the gasket, affecting the sealing performance of the gas valve and reducing the service life.

Simultaneously, when the traditional gas valve is connected with the gas pipe, the gas is easy to leak from the connection between the gas valve and the gas pipe due to the unstable or unfastened structural design.

Finally, the valve stem is one of the pipe fittings with the most frequent movement of the gas valve in use, but the traditional design often only pursues the sealing of the valve, and there is a ring groove on the valve stem, and a sealing ring is set on the ring groove. Although the sealing effect of such a design is enhanced, the structural strength of the valve stem is reduced, causing the valve stem to break easily during numerous rotations and shortening the service life of the valve stem.

Utility model content

Aiming at the deficiencies in the prior art, the purpose of the utility model is to provide a gas valve with good sealing performance.

In order to achieve the above purpose, the utility model provides the following technical solutions: a gas valve, including a valve body, the valve body is provided with a valve core, a valve rod for driving the valve core, and valve rods for respectively sealing both ends of the valve core. Two sealing gaskets, the valve body is connected with a bonnet, the surface of the valve core is arc-shaped, the sealing gasket is provided with a ring-shaped support ring, the support ring is provided with a first cone surface, and the valve stem is A plurality of annular rings are evenly distributed, the distance between any two adjacent annular rings is the same, and an annular groove is formed between any two annular rings that ring a bell, and a sealing ring is sleeved on the annular groove.

Further, the number of said annular rings is three, and the annular rings are integrally formed with the valve stem.

Further, the valve body is provided with an annular protrusion, and the valve stem is provided with a ring positioning ring adapted to the protrusion, and the inner diameter of the protrusion is 2mm larger than the protrusion of the positioning ring.

Further, the valve body is also connected with a sleeve, and the bonnet is also connected with a sleeve, the sleeve includes a threaded hole and a small hole, and the threaded hole and the small hole are communicated through the second tapered surface, and the valve body is provided with a The second conical surface is adapted to the third conical surface, and the valve cap is provided with a fourth conical surface adapted to the second conical surface.

Compared with the deficiencies of the prior art, the beneficial effects brought by the technical solution provided by the utility model: 1. The surface of the valve core is arc-shaped, and the part of the support ring in contact with the valve core is set as the first tapered surface , use the spool and bonnet to compress the gasket and the spool, and the gasket is made of elastic materials such as rubber. During the compression process, the rubber pad is deformed, and the first cone surface is deformed to be consistent with the surface of the spool. Adapted curved surface, at this time, the rubber pad is in a compressed state, even if the rubber pad is worn, the rubber pad itself that has been compressed will supplement the worn part, effectively preventing gas from leaking from the connection between the rubber pad and the valve core 2. Three annular rings are set on the valve stem, and the annular ring and the valve stem are integrally formed. The distance between any two adjacent annular rings is the same, and the two annular rings that ring any bell form a ring There is a sealing ring on the annular groove, and there is no annular groove directly on the valve stem. Therefore, while ensuring the sealing effect, it does not affect the structural strength of the valve stem, and prevents the valve stem from breaking and affecting the service life of the valve stem. phenomenon occurs. 3. Through the above design, when the gas pipe is connected to the gas valve, the end of the connection between the gas pipe and the gas valve needs to be provided with a clip that matches the third or fourth cone, and the sleeve is tightened to use the first The clip is pressed against the second cone surface and the third cone surface or the second cone surface and the fourth cone surface to achieve a stable and fast connection effect.

Description of drawings

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

Fig. 2 is a schematic diagram of assembly of the utility model.

Figure 3 is a schematic structural view of the valve stem.

Fig. 4 is a schematic diagram before assembly of the gasket and the valve core.

Fig. 5 is a schematic diagram after the gasket and the valve core are assembled.

detailed description

The utility model is further described with reference to Fig. 1-Fig. 4.

A gas valve, comprising a valve body 1, the valve body 1 is provided with a valve core 2, a valve stem 5 for driving the valve core 2 and two gaskets 3 for respectively sealing the two ends of the valve core 2, the valve body 1 is connected with a bonnet 4, the surface of the valve core 2 is arc-shaped, and the sealing gasket 3 is provided with an annular support ring 31, and the support ring 31 is provided with a first tapered surface 311, and the valve The bar 5 is provided with several annular rings 51 evenly distributed, the distance between any adjacent two annular rings 51 is the same, and an annular groove 52 is formed between the two annular rings 51 of any ringing bell, on the annular groove 52 A sealing ring 53 is sleeved.

The surface of the spool 2 is arc-shaped, and the part of the support ring 31 in contact with the spool 2 is set as the first cone surface 311, and the sealing gasket 3 and the spool 2 are pressed by the spool 2 and the bonnet 4, The sealing pad 3 is made of elastic materials such as rubber. During the pressing process, the rubber pad is deformed, and the first conical surface 311 is deformed to be an arc surface adapted to the surface of the valve core 2. At this time, the rubber pad is in the In the compressed state, even if the rubber pad is worn, the already compressed rubber pad will supplement the worn part, effectively preventing gas from leaking from the connection between the rubber pad and the valve core 2;

Three annular rings 51 are arranged on the valve stem 5, and the annular rings 51 and the valve stem 5 are integrally formed, the distance between any adjacent two annular rings 51 is the same, and the distance between any two annular rings 51 that ring An annular groove 52 is formed, and a sealing ring 53 is set on the annular groove 52, and the annular groove 52 is not directly opened on the valve stem 5, so while ensuring the sealing effect, it does not affect the structural strength of the valve stem 5, preventing the valve stem from 5 breaks and affects the phenomenon that the service life of the valve stem 5 occurs.

Further, the valve body 1 is provided with an annular protrusion 11, and the valve stem 5 is provided with a positioning ring 54 adapted to the protrusion 11, and the inner diameter of the protrusion 11 is larger than the outer diameter 11 of the positioning ring 54. 2mm.

The protrusion 11 positions the valve stem 5, and the inner diameter of the protrusion 11 is 2mm larger than the outer diameter 11 of the positioning ring 54, so that the valve stem 5 does not directly contact the valve body 1 during the rotation of the valve stem 5, thereby preventing mechanical damage. The phenomenon of wear and tear.

Further, the valve body 1 is also connected with a sleeve 6, and the valve cap 4 is also connected with a sleeve 6. The sleeve 6 includes a threaded hole 61 and a small hole 62, and the threaded hole 61 and the small hole 62 pass through the second cone. The surface 63 communicates, the valve body 1 is provided with a third tapered surface 12 adapted to the second tapered surface 63 , and the valve cap 4 is provided with a fourth tapered surface 41 adapted to the second tapered surface 63 .

Through the above design, when the gas pipe is connected to the gas valve, one end of the connection between the gas pipe and the gas valve needs to be provided with a clip that is adapted to the third cone surface 12 or the fourth cone surface 41, and the sleeve 6 is tightened for use. The second tapered surface 63 and the third tapered surface 12 or the second tapered surface 63 and the fourth tapered surface 41 press the clamp to achieve a stable and fast connection effect.

The above descriptions are only preferred embodiments of the present utility model, and are not intended to limit the present utility model. Those skilled in the art will make common changes and replacements within the scope of the technical solution of the utility model, which should be included in the protection of the utility model. within range.

Claims (4)

1. A gas valve, comprising a valve body, is characterized in that: the valve body is provided with a valve core, a valve rod for driving the valve core and two gaskets for respectively sealing the two ends of the valve core, and the valve body is connected with The bonnet, the surface of the valve core is arc-shaped, the sealing pad is provided with a ring-shaped support ring, the support ring is provided with a first cone surface, and the valve stem is provided with several ring-shaped rings evenly distributed. The distance between any two adjacent annular rings is the same, and an annular groove is formed between the two annular rings that ring arbitrarily, and a sealing ring is sleeved on the annular groove. 2. A kind of gas valve according to claim 1, characterized in that: the number of the annular ring is 3, and the annular ring and the valve stem are integrally formed. 3. A kind of gas valve according to claim 1, characterized in that: the valve body is provided with an annular protrusion, the valve stem is provided with a ring positioning ring adapted to the protrusion, and the raised The inner diameter is 2mm larger than the projection of the retaining ring. 4. A kind of gas valve according to claim 1, it is characterized in that: described valve body is also connected with sleeve pipe, is also connected with sleeve pipe on the bonnet, sleeve pipe comprises threaded hole and aperture, threaded hole It communicates with the small hole through the second cone surface, the valve body is provided with a third cone surface adapted to the second cone surface, and the valve cap is provided with a fourth cone surface adapted to the second cone surface.