CN218267492U

CN218267492U - Silt-proof device for gas valve

Info

Publication number: CN218267492U
Application number: CN202221969718.8U
Authority: CN
Inventors: 温亚超; 杨景森; 樊祥胜; 徐洁; 王清
Original assignee: Beijing Jingran Lingyun Gas Equipment Corp ltd
Current assignee: Beijing Jingran Lingyun Gas Equipment Corp ltd
Priority date: 2022-07-28
Filing date: 2022-07-28
Publication date: 2023-01-10
Anticipated expiration: 2032-07-28

Abstract

The application discloses gas valve prevents silt device includes: reducing, sealing member and internal support ring. The reducing part comprises a small-end cylindrical pipe section and a large-end cylindrical pipe section which are changed in a step-shaped manner and are hollow inside, the inner side of the end part of the large-end cylindrical pipe section is provided with a unthreaded hole section, and the inner end part of the unthreaded hole section is provided with an annular clamping groove; the sealing element is a cylindrical ring body with two through ends, the sealing element comprises a sealing element body and a step which is positioned at one end of the sealing element body and protrudes out of the outer surface of the sealing element body, the step is arranged in the annular clamping groove, and the sealing element body is arranged in the unthreaded hole section; the inner support ring is a cylindrical ring body with two through ends, and the inner support ring is pressed in the sealing element body. This application is through setting up the sealing member in the reducing, and the tip of sealing member and case contact sets up most advanced, sets up the fillet in point department simultaneously, and it can laminate with case surface all the time when the case is rotatory, but keeps apart silt in the sealing member outside the installation of polyethylene valve, protects inside case.

Description

Silt-proof device for gas valve

Technical Field

The application relates to the technical field of gas pipe networks, in particular to a silt preventing device for a gas valve.

Background

At present, most of gas pipe networks adopt buried polyethylene pipelines, and polyethylene valves become an indispensable part of the gas pipelines. All the links of installation, use, maintenance and the like of the polyethylene valve need to be executed strictly according to the process. At present, some silt exists unavoidably in the installation process of the polyethylene valve, and certain influence exists on the later sealing of the valve.

SUMMERY OF THE UTILITY MODEL

It is an object of the present application to overcome the above problems or to at least partially solve or mitigate the above problems.

According to an aspect of the present application, there is provided a gas valve silt prevention apparatus, comprising:

the variable diameter device comprises a variable diameter part and a variable diameter part, wherein the variable diameter part comprises a small-end cylindrical pipe section and a large-end cylindrical pipe section which are changed in a step-shaped manner and are hollow inside, the inner side of the end part of the large-end cylindrical pipe section is provided with an unthreaded hole section, the unthreaded hole section is provided with an outer end part far away from the small-end cylindrical pipe section and an inner end part close to the small-end cylindrical pipe section, and the inner end part of the unthreaded hole section is provided with an annular clamping groove;

the sealing element is a cylindrical ring body with two through ends, the sealing element comprises a sealing element body and a step which is positioned at one end of the sealing element body and protrudes out of the outer surface of the sealing element body, the step is used for being installed in the annular clamping groove, and the sealing element body is used for being installed in the unthreaded hole section; and

the inner supporting ring is a cylindrical ring body with two through ends, and the inner supporting ring is pressed in the sealing element body.

Optionally, the inner support ring is an interference fit with the seal body.

Optionally, the annular clamping groove is provided with a clamping groove round angle along the annular direction.

Optionally, the outer diameter edges of both ends of the inner support ring are rounded.

Optionally, an outer surface of an end of the seal body remote from the step is beveled inwardly and an inner surface thereof is beveled outwardly such that the end of the seal body forms a tip.

Optionally, the tip is provided as a rounded corner.

The utility model provides a gas valve prevents silt device through setting up the sealing member in the reducing, and the tip of sealing member and case contact sets up most advanced, sets up the fillet in most advanced department simultaneously, and it can laminate with the case surface all the time when the case is rotatory, but keeps apart silt in the sealing member outside the installation of polyethylene valve, protects inside case.

The utility model provides a gas valve prevents silt device installs additional on gas valve, has enclosed sealing washer and case at certain range, has reduced the risk of leaking in the valve, has improved the life of valve, more helps improving the customer to the use operating mode of valve, promotes its application range, is favorable to the popularization and the use of gas pipeline and valve.

This application has the advantage that the principle is simple, completely cuts off silt through increasing one sealed mode firmly, has guaranteed the stability in use of valve, the marketing of being convenient for.

The above and other objects, advantages and features of the present application will become more apparent to those skilled in the art from the following detailed description of specific embodiments thereof, taken in conjunction with the accompanying drawings.

Drawings

Some specific embodiments of the present application will be described in detail hereinafter by way of illustration and not limitation with reference to the accompanying drawings. The same reference numbers in the drawings identify the same or similar elements or components. Those skilled in the art will appreciate that the drawings are not necessarily to scale. In the drawings:

FIG. 1 is a schematic perspective view of a gas valve silt guard according to an embodiment of the present application;

FIG. 2 is a schematic side view of the variable diameter of the gas valve silt guard of FIG. 1;

FIG. 3 is a schematic side view of a seal of the gas valve silt guard of FIG. 1;

fig. 4 is a schematic side view of the internal support ring of the gas valve silt guard of fig. 1.

Reference numerals

Reducing by-10; a small end cylindrical pipe section-11; a large end cylindrical pipe section-12; unthreaded hole section-13; a ring-shaped clamping groove-14; a clamping groove fillet-15; a seal-20; a seal body-21; a step-22; a tip-23; an inner support ring-30.

Detailed Description

Fig. 1 is a schematic perspective view of a gas valve silt prevention apparatus according to an embodiment of the present application. Referring to fig. 1, the silt preventing apparatus for a gas valve is installed inside a polyethylene valve for preventing silt of the polyethylene valve from entering the inside of a valve core during the installation process, and may generally include: a reducing 10, a seal 20 and an inner support ring 30.

Fig. 2 is a schematic side view of the reducing diameter 10 of the gas valve silt guard shown in fig. 1. Referring to fig. 2, the reducing diameter 10 includes a small-end cylindrical tube section 11 and a large-end cylindrical tube section 12 which are changed in a step shape and are hollow inside, an inner side of an end portion of the large-end cylindrical tube section 12 is provided with a smooth hole section 13, the smooth hole section 13 is provided with an outer end portion far away from the small-end cylindrical tube section 11 and an inner end portion close to the small-end cylindrical tube section 11, an inner end portion of the smooth hole section 13 is provided with an annular clamping groove 14, and a radial dimension of the annular clamping groove 14 is slightly larger than a radial dimension of the smooth hole section 13. The reducing 10 is a plastic injection molding part and is machined after injection molding.

Fig. 3 is a schematic side view of the seal 20 of the gas valve silt guard of fig. 1. Referring to fig. 3, the sealing element 20 is a cylindrical ring body with two through ends, the sealing element 20 includes a sealing element body 21 and a step 22 located at one end of the sealing element body 21 and protruding from an outer surface thereof, the step 22 is configured to be installed in the ring slot 14, and the sealing element body 21 is configured to be installed in the unthreaded hole section 13. The seal 20 is a cast workpiece. The axial length of the step 22 matches the axial length of the ring groove 14.

As shown in fig. 3, an end of the seal body 21 remote from the step 22 has an outer surface that is beveled inward and an inner surface that is beveled outward such that the end of the seal body 21 forms a tip 23. The tip 23 is provided as a rounded corner.

The utility model provides a gas valve prevents silt device through set up sealing member 20 in reducing 10, and the tip of sealing member 20 and case contact sets up most advanced 23, sets up the fillet in most advanced 23 department simultaneously, and it can laminate with case surface all the time when the case is rotatory, but the installation of polyethylene valve keeps apart silt in sealing member 20 outside, protects inside case.

Fig. 4 is a schematic side view of the inner support ring 30 of the gas valve silt guard of fig. 1. Referring to fig. 4, the inner support ring 30 is a cylindrical ring body with two ends penetrating, and the inner support ring 30 is press-fitted into the sealing member body 21. The inner support ring 30 is completed by injection molding.

As shown in fig. 1, the step 22 is adapted to fit within the ring groove 14 and prevent radial movement of the seal 20; the sealing body 21 is configured to be mounted in the aperture section 13, and can axially limit the movement of the sealing member 20.

As shown in fig. 2, the ring slot 14 is provided with slot rounded corners 15 along its circumferential direction. The setting can prevent that the working of plastics from producing stress concentration point, influences body intensity like this.

As shown in fig. 1, the inner support ring 30 is in interference fit with the seal body 21 to further secure the seal 20.

As shown in fig. 4, both end outer diameter edges of the inner support ring 30 are rounded. This prevents the inner support ring 30 from damaging the seal 20 during the press-fitting process.

It is to be noted that, unless otherwise specified, technical or scientific terms used herein shall have the ordinary meaning as understood by those skilled in the art to which this application belongs.

In the description of the present application, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the present application and to simplify the description, but are not intended to indicate or imply that the device or element so referred to must have a particular orientation, be constructed in a particular orientation, and be operated in a particular manner, and are not to be construed as limiting the present application.

Furthermore, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or to implicitly indicate a number of the indicated technical features. In the description of the present application, "a plurality" means two or more unless specifically defined otherwise.

In this application, unless expressly stated or limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can include, for example, fixed connections, removable connections, or integral parts; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as the case may be.

In this application, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through intervening media. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature "under," "beneath," and "under" a second feature may be directly under or obliquely under the second feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

The above description is only for the preferred embodiment of the present application, but the scope of the present application is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present application should be covered within the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims

1. The utility model provides a gas valve prevents silt device which characterized in that includes:

2. A gas valve silt prevention apparatus according to claim 1, wherein the inner support ring is in interference fit with the seal body.

3. The gas valve silt prevention apparatus according to claim 1, wherein the annular groove is provided with a groove fillet along an annular direction thereof.

4. The gas valve silt prevention apparatus of claim 1, wherein both end outer diameter edges of the inner support ring are rounded.

5. A gas valve silt guard according to any one of claims 1 to 4, wherein the end of the seal body remote from the step has an outer surface which is bevelled inwardly and an inner surface which is bevelled outwardly so that the end of the seal body forms a point.

6. A gas valve silt prevention apparatus according to claim 5, wherein the tip is rounded.