CN218267577U

CN218267577U - Valve nozzle plugging device and gas ball valve

Info

Publication number: CN218267577U
Application number: CN202222624001.6U
Authority: CN
Inventors: 赖石贵; 郭胜兰; 黄子添; 董伟明
Original assignee: Guangzhou Gas Group Co Ltd
Current assignee: Guangzhou Gas Group Co Ltd
Priority date: 2022-09-30
Filing date: 2022-09-30
Publication date: 2023-01-10
Anticipated expiration: 2032-09-30

Abstract

The utility model discloses a valve mouth plugging device and a gas ball valve, wherein the valve mouth plugging device comprises a locking nut, a sealing structure and a plugging structure, and the locking nut can be sleeved on the valve mouth; the sealing structure is positioned in the locking nut and can be sleeved on the valve nozzle; the lateral wall of the plugging structure is provided with an external thread, the inner wall of the locking nut is provided with an internal thread, the external thread is meshed with the internal thread, and the first end of the plugging structure is abutted to the second end of the sealing structure. The utility model discloses in, locking nut overlaps and establishes on the valve cock, and the shutoff structure passes through threaded connection and installs on locking nut, through the gap between sealed rubber ring packing locking nut, block structure and the valve cock, strengthens the leakproofness, avoids the gas to reveal.

Description

Valve nozzle plugging device and gas ball valve

Technical Field

The utility model relates to a valve field, in particular to valve cock plugging device and gas ball valve.

Background

When the gas appliance has the conditions of gas leakage, overused use, and user repair or replacement of the gas appliance, a gas worker closes a front straight nozzle ball valve of the gas furnace or a front ball valve of a gas meter, attaches a gas use prohibition label and opens a hidden danger list, prohibits a user from using the gas appliance before eliminating the hidden danger, but has the possibility that the user opens the gas straight nozzle ball valve to use the gas without permission, and causes the risk of gas leakage and even explosion. The rear end of the indoor gas straight nozzle ball valve of the user is not connected with a burner, a gas worker needs to remove the plug for plugging the gas pipeline for the straight nozzle ball valve, the workload of the gas worker is large, the efficiency is low, and the labor cost is wasted. In the related art, the valve port is blocked by the plug and the fastener, and the risk of gas leakage still exists due to the fact that a large fit clearance exists between the plug and the valve port.

SUMMERY OF THE UTILITY MODEL

For solving at least one among the above-mentioned technical problem, the utility model provides a valve cock plugging device and gas ball valve, the technical scheme who adopts as follows:

the utility model provides a valve mouth plugging device, which comprises a locking nut, a sealing structure and a plugging structure, wherein the locking nut is hollow and can be sleeved on the valve mouth; the sealing structure is hollow, is positioned in the locking nut and can be sleeved on the valve nozzle; the lateral wall of the plugging structure is provided with an external thread, the inner wall of the locking nut is provided with an internal thread, the external thread is meshed with the internal thread, and the first end of the plugging structure is abutted to the second end of the sealing structure.

The embodiment of the utility model has the following beneficial effect at least: the utility model discloses in, locking nut overlaps and establishes on the valve cock, and the shutoff structure passes through threaded connection and installs on locking nut, through the gap between sealed rubber ring packing locking nut, block structure and the valve cock, strengthens the leakproofness, avoids the gas to reveal.

The utility model discloses an in some embodiments, lock nut is inside to be provided with the step, lock nut's first end internal diameter is less than lock nut's second end internal diameter, the seal structure butt in on the step.

The utility model discloses an in some embodiments, seal structure's first end terminal surface slope, seal structure's first end inner wall protrusion in seal structure's first end outer wall, the terminal surface slope of step, the step is from being close to the position of lock nut first end is to keeping away from the position internal diameter of lock nut first end increases gradually, seal structure's first end terminal surface inclination with the terminal surface inclination of step corresponds, seal structure's first end terminal surface butt in the terminal surface of step.

The utility model discloses an in some embodiments, seal structure's second end terminal surface slope, seal structure's second end inner wall protrusion in seal structure's second end outer wall, seal structure's first end terminal surface slope, seal structure's first end terminal surface is from being close to the position of seal structure second end is to keeping away from the position internal diameter of seal structure second end increases gradually, seal structure's second end terminal surface inclination with seal structure's first end terminal surface inclination corresponds, seal structure's second end terminal surface butt in seal structure's first end terminal surface.

The utility model discloses an in some embodiments, plugging structure is provided with well kenozooecium, well kenozooecium intercommunication plugging structure's first end terminal surface.

In some embodiments of the present invention, the second end sidewall of the blocking structure protrudes from the first end sidewall of the blocking structure.

In some embodiments of the present invention, the second end surface of the blocking structure is provided with a recessed portion.

In some embodiments of the present invention, the shape of the recessed portion is a hexagonal prism.

In some embodiments of the present invention, the lock nut is shaped as a hexagonal prism.

The utility model provides a gas ball valve, gas ball valve include foretell valve nozzle plugging device.

The embodiment of the utility model has the following beneficial effect at least: the utility model discloses in, threaded connection between lock nut and the block structure, seal structure and lock nut butt, seal structure and block structure butt reduce staff's working strength through precession or the installation and the dismantlement of the valve mouth plugging device of being convenient for of back-off block structure.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

fig. 1 is an exploded view of a valve nozzle plugging device of the present invention;

fig. 2 is a schematic structural view of a lock nut in the valve mouth plugging device of the present invention;

fig. 3 is a schematic structural view of a sealing structure in the valve mouth plugging device of the present invention;

fig. 4 is a schematic structural diagram of a plugging structure in the valve mouth plugging device of the present invention;

fig. 5 is a cross-sectional view of the valve nozzle plugging device of the present invention.

Reference numerals:

101. locking the nut; 102. a step;

201. a sealing structure;

301. a blocking structure; 302. a hollow part; 303. a recessed portion.

Detailed Description

This section will describe in detail embodiments of the invention in connection with fig. 1 to 5, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are exemplary only for explaining the present invention, and should not be construed as limiting the present invention.

In the description of the present invention, it should be understood that if the terms "center", "middle", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", etc. are used to indicate an orientation or positional relationship based on that shown in the drawings, it is only for convenience of description and simplicity of description, and it is not intended to indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention. The features defined as "first" and "second" are used for distinguishing feature names rather than having special meanings, and further, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, "a plurality" means two or more unless otherwise specified.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected" and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood as a specific case by those skilled in the art.

As shown in fig. 1, an embodiment of the present invention provides a valve nozzle plugging device, which includes a lock nut 101, a sealing structure 201, and a plugging structure 301.

As shown in fig. 2, the locking nut 101 is hollow, the locking nut 101 can be sleeved on the valve nozzle, the inner diameter of the locking nut 101 corresponds to the outer diameter of the valve nozzle, that is, the minimum inner diameter of the locking nut 101 corresponds to the outer diameter of the valve nozzle, so that the phenomenon that the locking nut 101 radially shakes to affect the sealing of the valve nozzle when sleeved on the valve nozzle is avoided.

In some examples, the external shape of the lock nut 101 is hexagonal prism, which facilitates the worker to rotate the lock nut 101, thereby realizing the disassembly of the valve mouth plugging device, and specifically, the lock nut 101 can be rotated by a general hexagon nut wrench.

As shown in fig. 3, the sealing structure 201 can be sleeved on the valve nozzle, and it can be understood that the sealing structure 201 is hollow, the inner diameter of the sealing structure 201 corresponds to the outer diameter of the valve nozzle, and the inner wall of the sealing structure 201 is abutted to the outer wall of the valve nozzle. Specifically, the sealing structure 201 is made of an elastic material, and the elastic material can fill a gap at the joint of the sealing structure 201 and the valve nozzle through elastic deformation to improve the sealing performance of the valve nozzle.

Further, the sealing structure 201 is located in the retaining nut 101, that is, the sealing structure 201 is located between the valve nozzle side wall and the inner wall of the retaining nut 101, it can be understood that the sealing structure 201 can also fill the gap at the joint of the retaining nut 101 and the sealing structure 201 through elastic deformation, so as to further improve the sealing performance, and the outer diameter of the sealing structure 201 corresponds to the inner diameter of the retaining nut 101.

In some examples, because the sealing structure 201 has a certain thickness, in order to ensure that the sealing structure 201 can be accommodated inside the retaining nut 101, a certain distance exists between a part of the inner wall of the retaining nut 101 and the side wall of the valve nozzle. Therefore, the inner wall of the lock nut 101 has two parts, one of which is fitted with the seal structure 201 and has a large inner diameter; the other part is matched with the valve mouth and has small inner diameter. Further, a portion having a large inner diameter is provided at the second end of the lock nut 101, and a portion having a small inner diameter is provided at the first end of the lock nut 101.

Specifically, for the internal diameters of the locking nut 101 with different sizes to be connected, the step 102 is arranged inside the locking nut 101, the sealing structure 201 abuts against the step 102, the sealing structure 201 is convenient to axially position, and the sealing structure 201 is prevented from moving inside the locking nut 101, so that the sealing effect is influenced.

In some examples, the first end face of the sealing structure 201 is sloped. Further, the first end inner wall of the sealing structure 201 extends to the outside of the first end of the sealing structure 201, that is, the first end inner wall of the sealing structure 201 protrudes from the first end outer wall of the sealing structure 201. It will be appreciated that to ensure that the end face of the step 102 is closely connected to the first end of the seal arrangement 201, the end face of the step 102 is inclined and the step 102 has an internal diameter that increases progressively from a position close to the first end of the lock nut 101 to a position remote from the first end of the lock nut 101. Specifically, the first end face inclination angle of the sealing structure 201 corresponds to the end face inclination angle of the step 102, and the first end face of the sealing structure 201 abuts against the end face of the step 102, so that the contact area between the sealing structure 201 and the lock nut 101 is increased, and the sealing performance of the valve nozzle is improved.

As shown in fig. 4 to 5, in some examples, the side wall of the blocking structure 301 is provided with an external thread, the inner wall of the retaining nut 101 is provided with an internal thread, the internal thread is meshed with the external thread, and the blocking structure 301 is detachably connected with the retaining nut 101 through a threaded connection, so that replacement and maintenance of components in the valve nozzle blocking device are facilitated. It can be understood that the first end side wall of the blocking structure 301 is provided with an external thread, so that the first end of the blocking structure 301 is located inside the lock nut 101, and as the first end of the blocking structure 301 is gradually screwed into the lock nut 101, the first end of the blocking structure 301 abuts against the sealing structure 201, and gas escaping from the valve nozzle is prevented from leaking along a gap at the connection position of the blocking structure 301 and the lock nut 101.

In some examples, the second end inner wall of the sealing structure 201 extends outward of the second end of the sealing structure 201, i.e., the second end inner wall of the sealing structure 201 protrudes beyond the second end outer wall of the sealing structure 201. It will be appreciated that to ensure that the first end of the occluding structure 301 is tightly connected to the second end of the sealing structure 201, the first end face of the occluding structure 301 is inclined, and the inner diameter of the first end face of the occluding structure 301 increases from a position near the second end of the occluding structure 301 to a position away from the second end of the occluding structure 301. Specifically, the inclination angle of the second end face of the sealing structure 201 corresponds to the inclination angle of the first end face of the blocking structure 301, and the first end face of the blocking structure 301 abuts against the second end face of the sealing structure 201, so as to increase the contact area between the sealing structure 201 and the blocking structure 301, and thus improve the sealing performance of the valve nozzle.

In some examples, the blocking structure 301 is provided with a hollow portion 302, the hollow portion 302 is communicated with a first end face of the blocking structure 301, that is, the hollow portion 302 is communicated with a valve nozzle, and gas escaping from the valve nozzle is blocked by the blocking structure 301 to avoid gas leakage. Hollow portion 302 is favorable to blocking structure 301's lightweight, and simultaneously, when the valve mouth is longer, the valve mouth can be in hollow portion 302's within range, avoids valve mouth and blocking structure 301 to interfere.

In some examples, the second end sidewall of the blocking structure 301 protrudes from the first end sidewall of the blocking structure 301, and when the blocking structure 301 is gradually screwed into the lock nut 101, the protruding portion of the sidewall of the blocking structure 301 can abut against the second end of the lock nut 101, so that the blocking structure 301 is prevented from being excessively screwed into the lock nut 101, the blocking structure 301 is prevented from being difficult to be taken out from the lock nut 101, and meanwhile, the sealing structure 201 is easily damaged by pressure.

In some examples, a recess 303 is provided on a second end face of the blocking structure 301, and the recess 303 facilitates a worker to rotate the blocking structure 301 to achieve detachment between the blocking structure 301 and the lock nut 101. Further, the recess 303 is shaped as a hexagonal prism to facilitate insertion of a general fastening tool for locking or removal.

An embodiment of the utility model provides a gas ball valve, gas ball valve include valve cock plugging device and valve cock, and valve cock plugging device can install in advance, and on the valve cock was established to the cover again, the valve cock continued precession block structure 301 when needing stronger sealed. Or, firstly, the locking nut 101 is sleeved on the valve nozzle, and then the sealing structure 201 is installed and the blocking structure 301 is screwed in, so that the sealing effect is achieved, and the operation of a worker is facilitated.

In the description of the present specification, reference to the terms "one embodiment," "some examples," "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples" or the like, if any, means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The embodiments of the present invention have been described in detail with reference to the drawings, but the present invention is not limited to the above embodiments, and various changes can be made without departing from the gist of the present invention within the knowledge of those skilled in the art.

Claims

1. A valve nozzle blocking device, comprising:

the locking nut is hollow and can be sleeved on the valve nozzle;

the sealing structure is hollow, is positioned in the locking nut and can be sleeved on the valve nozzle;

the side wall of the blocking structure is provided with an external thread, the inner wall of the locking nut is provided with an internal thread, the external thread is meshed with the internal thread, and the first end of the blocking structure is abutted to the second end of the sealing structure.

2. The valve nozzle plugging device according to claim 1, wherein a step is arranged inside the lock nut, the inner diameter of the first end of the lock nut is smaller than the inner diameter of the second end of the lock nut, and the sealing structure abuts against the step.

3. The valve nozzle plugging device according to claim 2, wherein the first end face of the sealing structure is inclined, the inner wall of the first end of the sealing structure protrudes out of the outer wall of the first end of the sealing structure, the end face of the step is inclined, the inner diameter of the step gradually increases from a position close to the first end of the lock nut to a position far away from the first end of the lock nut, the inclination angle of the first end face of the sealing structure corresponds to the inclination angle of the end face of the step, and the first end face of the sealing structure abuts against the end face of the step.

4. The valve nozzle plugging device according to claim 1, wherein the second end face of the sealing structure is inclined, the inner wall of the second end of the sealing structure protrudes out of the outer wall of the second end of the sealing structure, the first end face of the plugging structure is inclined, the inner diameter of the first end face of the plugging structure gradually increases from a position close to the second end of the plugging structure to a position far away from the second end of the plugging structure, the inclination angle of the second end face of the sealing structure corresponds to the inclination angle of the first end face of the plugging structure, and the second end face of the sealing structure abuts against the first end face of the plugging structure.

5. Valve nozzle plugging device according to claim 1 or 4, wherein said plugging structure is provided with a hollow portion communicating with a first end face of said plugging structure.

6. A valve nozzle blocking device according to claim 1 or 4, wherein the second end side wall of the blocking structure protrudes from the first end side wall of the blocking structure.

7. Valve nozzle blocking device according to claim 1, wherein the second end face of the blocking structure is provided with a recess.

8. The valve nozzle blocking device of claim 7, wherein the recess is shaped as a hexagonal prism.

9. The valve mouth blocking device of claim 1, wherein the locking nut is shaped as a hexagonal prism.

10. A gas ball valve comprising a valve mouth closure device according to any one of claims 1 to 9.