CN205155219U

CN205155219U - Gas valve

Info

Publication number: CN205155219U
Application number: CN201520872971.5U
Authority: CN
Inventors: 潘振轩
Original assignee: YUHUAN AOLONG VALVES CO Ltd
Current assignee: Yuhuan Aolong Valve Co., Ltd.
Priority date: 2015-11-04
Filing date: 2015-11-04
Publication date: 2016-04-13
Anticipated expiration: 2025-11-04

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 kind of gas valve

Technical field

The utility model relates to valve technology field, is specially a kind of gas valve.

Background technique

At present, the common configuration of the gas valve adopted both at home and abroad is: the surface of contact between spool and entrance point, outlet end is provided with a pair sealing gasket, reaches the object of sealing with this.But, along with the access times of gas valve increase, be easy to the wearing and tearing causing sealing gasket, cause the joint Leakage Gas of spool and sealing gasket, have influence on the sealability of gas valve, and reduce working life.

Meanwhile, time traditional coal air valve is connected with gas pipe, because of the cause that structural design is unstable or not fastening, coal gas easily leaks from the joint of gas valve and gas pipe.

Finally, valve rod is that gas valve in use moves one of pipe fitting the most frequently, but the sealing of valve is often only pursued in often traditional design, and on valve rod, being provided with annular groove, sheathed seal ring on annular groove, design sealing effect although it is so strengthens, but, reduce valve rod structural strength, cause valve rod easily to rupture in rotation many times, shorten the working life of valve rod.

Model utility content

For the deficiency that prior art exists, the purpose of this utility model is the gas valve providing a kind of good seal performance.

For achieving the above object, the utility model provides following technological scheme: a kind of gas valve, comprise valve body, spool is provided with in described valve body, for driving the valve rod of spool and two sealing gaskets for difference sealed valve core two ends, valve body is connected with bonnet, the curved shape in surface of described spool, described sealing gasket is provided with the bracing ring of ring-type, bracing ring is provided with first conical surface, described valve rod is provided with and is evenly equipped with several annular rings, distance between two annular rings of arbitrary neighborhood is identical, and looping groove between two annular rings of any jingle bell, circular groove is arranged with seal ring.

Further, the number of described annular ring is 3, and annular ring and valve-stem integrated shaping.

Further, be provided with the projection of ring-type in described valve body, valve rod is provided with the loop mapping circle with projection adaptation, and the internal diameter of projection 2mm larger than the projection of location ring.

Further, described valve body is also connected with sleeve pipe, bonnet is also connected with sleeve pipe, sleeve pipe comprises tapped hole and aperture, tapped hole is communicated with by second conical surface with aperture, and valve body is provided with the adaptive having three pyramidal faces with second conical surface, and bonnet is provided with the 4th conical surface with the second conical surface adaptation.

Contrast the deficiencies in the prior art, the beneficial effect that the technological scheme that the utility model provides is brought: the 1. curved shape in the surface of spool described in, and the part that bracing ring contacts with spool is set to first conical surface, utilize spool and bonnet press seal pad and spool, and sealing gasket is made up of rubber elastomeric material, in the process compressed, rubber pad is out of shape, and then make the first conical surface distortion in the cambered surface with spool face adaptation, now, rubber pad is in compressive state, even if rubber pad weares and teares to some extent, the rubber pad of pressurized itself supplements the part of wearing and tearing, effectively prevent the phenomenon that coal gas leaks from the joint of rubber pad and spool from occurring, 2. 3 annular rings are set on valve rod, and annular ring and valve-stem integrated shaping, distance between two annular rings of arbitrary neighborhood is identical, and looping groove between two annular rings of any jingle bell, circular groove is arranged with seal ring, and there is no direct circular groove of opening on valve rod, therefore while guarantee sealing effect, do not affect again the structural strength of valve rod, prevent valve stem crack and affect the phenomenon in valve rod working life and occur.3. by above design, when in the process that gas pipe is connected with gas valve, clamp with having three pyramidal faces or the 4th conical surface adaptation need be set in one end that gas pipe is connected with gas valve, and screw sleeve pipe and utilize second conical surface and having three pyramidal faces or second conical surface and the 4th conical surface to compress clamp, play stable connection, fastening effect.

Accompanying drawing explanation

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

Fig. 2 is assembling schematic diagram of the present utility model.

Fig. 3 is the structural representation of valve rod.

Fig. 4 is the schematic diagram before sealing gasket and spool assemble.

Fig. 5 is the schematic diagram after sealing gasket and spool assemble.

Embodiment

With reference to Fig. 1-Fig. 4, the utility model is described further.

A kind of gas valve, comprise valve body 1, spool 2 is provided with in described valve body 1, for driving the valve rod 5 of spool 2 and two sealing gaskets 3 for difference sealed valve core 2 two ends, valve body 1 is connected with bonnet 4, the curved shape in surface of described spool 2, described sealing gasket 3 is provided with the bracing ring 31 of ring-type, bracing ring 31 is provided with first conical surface 311, described valve rod 5 is provided with and is evenly equipped with several annular rings 51, distance between two annular rings 51 of arbitrary neighborhood is identical, and looping groove 52 between two annular rings 51 of any jingle bell, circular groove 52 is arranged with seal ring 53.

The curved shape in surface of described spool 2, and the part that bracing ring 31 contacts with spool 2 is set to first conical surface 311, utilize spool 2 and bonnet 4 press seal pad 3 and spool 2, and sealing gasket 3 is made up of rubber elastomeric material, in the process compressed, rubber pad is out of shape, and then make first conical surface 311 be out of shape in the cambered surface adaptive with spool 2 surface, now, rubber pad is in compressive state, even if rubber pad weares and teares to some extent, the rubber pad of pressurized itself supplements the part of wearing and tearing, effectively prevent the phenomenon that coal gas leaks from the joint of rubber pad and spool 2 from occurring,

Valve rod 5 arranges 3 annular rings 51, and annular ring 51 is one-body molded with valve rod 5, distance between two annular rings 51 of arbitrary neighborhood is identical, and looping groove 52 between two annular rings 51 of any jingle bell, circular groove 52 is arranged with seal ring 53, and there is no direct circular groove 52 of opening on valve rod 5, therefore while guarantee sealing effect, do not affect again the structural strength of valve rod 5, prevent valve rod 5 from rupturing and affect the phenomenon in valve rod 5 working life and occur.

Further, be provided with the projection 11 of ring-type in described valve body 1, valve rod 5 is provided with the positioning ring 54 with protruding 11 adaptations, and the internal diameter of protruding 11 2mm larger than the external diameter 11 of positioning ring 54.

Protruding 11 make valve rod 5 locate, and the internal diameter of protruding 11 2mm larger than the external diameter 11 of positioning ring 54, valve rod 5 valve rod 5 in the process of rotating directly is not contacted with valve body 1, and then prevents the phenomenon of mechanical wear.

Further, described valve body 1 is also connected with sleeve pipe 6, bonnet 4 is also connected with sleeve pipe 6, sleeve pipe 6 comprises tapped hole 61 and aperture 62, tapped hole 61 is communicated with by second conical surface 63 with aperture 62, valve body 1 is provided with and the adaptive having three pyramidal faces 12 of second conical surface 63, and bonnet 4 is provided with the 4th conical surface 41 with the second conical surface 63 adaptation.

By above design, when in the process that gas pipe is connected with gas valve, clamp with having three pyramidal faces 12 or the 4th conical surface 41 adaptation need be set in one end that gas pipe is connected with gas valve, and screw sleeve pipe 6 and utilize second conical surface 63 and having three pyramidal faces 12 or second conical surface 63 and the 4th conical surface 41 to compress clamp, play stable connection, fastening effect.

The foregoing is only preferred embodiment of the present utility model, not in order to limit the utility model, those skilled in the art carries out common change and replaces should being included in protection domain of the present utility model within the scope of technical solutions of the utility model.

Claims

1. a gas valve, comprise valve body, it is characterized in that: be provided with spool in described valve body, for driving the valve rod of spool and two sealing gaskets for difference sealed valve core two ends, valve body is connected with bonnet, the curved shape in surface of described spool, described sealing gasket is provided with the bracing ring of ring-type, bracing ring is provided with first conical surface, described valve rod is provided with and is evenly equipped with several annular rings, distance between two annular rings of arbitrary neighborhood is identical, and looping groove between two annular rings of any jingle bell, circular groove is arranged with seal ring.

2. a kind of gas valve according to claim 1, is characterized in that: the number of described annular ring is 3, and annular ring and valve-stem integrated shaping.

3. a kind of gas valve according to claim 1, is characterized in that: the projection being provided with ring-type in described valve body, valve rod is provided with the loop mapping circle with projection adaptation, and the internal diameter of projection 2mm larger than the projection of location 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, bonnet is also connected with sleeve pipe, sleeve pipe comprises tapped hole and aperture, tapped hole is communicated with by second conical surface with aperture, valve body is provided with the adaptive having three pyramidal faces with second conical surface, and bonnet is provided with the 4th conical surface with the second conical surface adaptation.