CN220581731U

CN220581731U - Sealing ball valve

Info

Publication number: CN220581731U
Application number: CN202322266912.0U
Authority: CN
Inventors: 夏信义; 周丐波; 孙将文
Original assignee: Zhejiang Qiute Valve Co ltd
Current assignee: Zhejiang Qiute Valve Co ltd
Priority date: 2023-08-22
Filing date: 2023-08-22
Publication date: 2024-03-12
Anticipated expiration: 2033-08-22

Abstract

The utility model belongs to the technical field of ball valves, and particularly relates to a sealing ball valve; comprising the following steps: the valve pipe is internally symmetrically provided with two sealing element mounting grooves; a valve ball disposed between the two seal mounting grooves; the two sealing components are respectively arranged in the two sealing element mounting grooves and are abutted against the valve ball; the two elastic support assemblies are respectively arranged in the two sealing element mounting grooves and axially abut against the two sealing assemblies; the sealing assembly comprises an elastic sealing ring and a metal reinforcing ring, and the metal reinforcing ring is embedded in the elastic sealing ring; the elastic support assembly comprises a spring and a sliding ring, the sliding ring axially abuts against the elastic sealing ring, and the spring axially abuts against the sliding ring; according to the ball valve, the metal reinforcing ring is embedded in the elastic sealing ring, so that stability of the sealing assembly under the condition of high-pressure impact is ensured, and the spring and the sliding ring are used for pushing the sealing assembly and the valve ball to form pretightening force, so that the sealing performance of the ball valve is improved.

Description

Sealing ball valve

Technical Field

The utility model belongs to the technical field of ball valves, and particularly relates to a sealing ball valve.

Background

The ball valve is mainly used for cutting off, distributing and changing the flow direction of a medium in a pipeline, can be tightly closed only by a small rotation moment, and is most suitable for being used as a switch and a cut-off valve.

However, the ball of the ball valve is mainly subjected to the load of the working medium at the outlet sealing assembly, so that whether the sealing assembly can withstand the working load of the ball valve medium is considered, in the prior art, when the ball valve is impacted by high pressure, the sealing assembly can shift and deform, and the ball valve can shift, so that the sealing performance of the ball valve is poor.

Disclosure of Invention

The utility model aims at solving the technical problems and provides a sealing ball valve, which achieves the function of ensuring the tightness of the ball valve under the condition of high-pressure medium impact through the combined action of a sealing component and an elastic supporting component.

In view of this, the present utility model provides a sealed ball valve comprising:

the valve pipe is internally symmetrically provided with two sealing element mounting grooves;

a valve ball disposed between the two seal mounting grooves;

the two sealing components are respectively arranged in the two sealing element mounting grooves and are in contact with the valve ball;

the two elastic support assemblies are respectively arranged in the two sealing element mounting grooves and axially abut against the two sealing assemblies;

the sealing assembly comprises an elastic sealing ring and a metal reinforcing ring, and the metal reinforcing ring is embedded in the elastic sealing ring; the elastic support assembly comprises a spring and a sliding ring, the sliding ring axially abuts against the elastic sealing ring, and the spring axially abuts against the sliding ring.

In the above aspect, further, the elastic seal ring includes:

an elastic seal ring body;

the arc-shaped sealing surface is arranged on one side of the elastic sealing ring body and is abutted against the valve ball.

In the above scheme, further, the elastic sealing ring further comprises two sealing bulges, and the two sealing bulges are axially arranged on the elastic sealing ring body and are abutted against the sliding ring.

In the above aspect, further, the metal reinforcing ring includes:

a reinforcing ring;

the supporting part is arranged on the inner wall of the reinforcing ring.

In the above scheme, further, be provided with the annular boss that is used for contradicting with the spring axial on the sealing member mounting groove, slip ring one end that is away from elastic seal ring is provided with the holding ring, the spring housing is established on the holding ring.

In the above scheme, further, the outer peripheral wall of the positioning ring is in sliding fit with the inner peripheral wall of the annular boss, and a plurality of pressure release grooves are axially formed in the inner peripheral wall of the annular boss.

In the above scheme, further, the elastic sealing ring periphery wall is provided with the sealing washer mounting groove, be provided with the elastic sealing ring in the sealing washer mounting groove, and the elastic sealing ring is contradicted with sealing member mounting groove inner peripheral wall.

In the above aspect, further, the valve tube includes:

a first pipe;

the first pipeline is connected with the second pipeline through the two flanges, and the sealing gasket is arranged between the two flanges.

The beneficial effects of the utility model are as follows:

1. when being impacted by high-pressure medium, the metal reinforcing ring is embedded in the elastic sealing ring, so that the stability of the sealing assembly is improved, the sealing assembly is prevented from deforming or shifting, the sealing performance of the ball valve is ensured, and when being impacted by high-pressure medium, the valve ball shifts, the spring is forced to push the sliding ring, the sliding ring is made to abut against the sealing assembly, the sealing assembly always abuts against the valve ball, and the sealing performance of the ball valve is further improved.

2. The arc sealing surface and the surface of the sealing bulge are arc-shaped, the contact area between the arc sealing surface and the valve ball and the sliding ring is small, the friction force can be reduced while the tightness is ensured, the torque is reduced, and the opening and the closing of the ball valve are facilitated.

3. The first pipeline is connected with the second pipeline through being equipped with two ring flanges, is provided with sealing washer between two ring flanges, makes things convenient for the ball valve installation and dismantles, and ensures the leakproofness of ball valve.

Drawings

FIG. 1 is a schematic view of the overall structure of the present utility model;

FIG. 2 is a schematic cross-sectional view of the present utility model;

FIG. 3 is a schematic view of the partial structure of FIG. 2 at A in accordance with the present utility model;

fig. 4 is a schematic view of the partial structure of fig. 2 at B of the present utility model.

The label in the figure is:

1-valve tube, 11-first tube, 12-second tube, 2-valve ball, 3-seal assembly, 31-elastic seal ring, 311-elastic seal ring body, 312-arcuate seal face, 313-seal boss, 32-metal stiffener ring, 321-stiffener ring, 322-support, 4-elastic support assembly, 41-spring, 42-slip ring, 5-seal mounting groove, 6-annular boss, 7-retainer ring, 8-relief groove, 9-seal mounting groove, 10-elastic seal ring, 13-flange, 14-seal gasket.

Detailed Description

Technical solutions in the embodiments of the present application will be clearly described below with reference to the drawings in the embodiments of the present application, and it is apparent that the described embodiments are some of the embodiments of the present application, but not all of the embodiments. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments in the present application are within the scope of the protection of the present application.

In the description of the present application, it is to be understood that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments in accordance with the present application. For ease of description, the dimensions of the various features shown in the drawings are not drawn to actual scale. Techniques, methods, and apparatus known to one of ordinary skill in the relevant art may not be discussed in detail, but should be considered part of the specification where appropriate. In all examples shown and discussed herein, any specific values should be construed as merely illustrative, and not a limitation. Thus, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further discussion thereof is necessary in subsequent figures.

Example 1:

the present embodiment provides a sealed ball valve, comprising:

the valve pipe 1 is internally symmetrically provided with two sealing element mounting grooves 5;

a valve ball 2, the valve ball 2 being disposed between two seal mounting grooves 5;

the two sealing assemblies 3 are respectively arranged in the two sealing piece mounting grooves 5 and are in contact with the valve ball 2;

the two elastic support assemblies 4 are respectively arranged in the two sealing element mounting grooves 5 and axially abut against the two sealing assemblies 3;

wherein, the seal assembly 3 comprises an elastic seal ring 31 and a metal reinforcing ring 32, and the metal reinforcing ring 32 is embedded in the elastic seal ring 31; the elastic support assembly 4 comprises a spring 41 and a sliding ring 42, the sliding ring 42 axially abuts against the elastic sealing ring 31, and the spring 41 axially abuts against the sliding ring 42.

In the technical scheme, the valve tube 1 can be made of a metal material with corrosion resistance and high pressure resistance, the sealing component 3 is arranged in the sealing component mounting groove 5 and is used for fixing the sealing component 3, and the sealing property is ensured and the medium is prevented from flowing out by abutting against the valve ball 2; the elastic supporting component 4 axially abuts against the sealing component 3, and the elastic repulsive force is used for enabling the elastic supporting component to generate pretightening force with the sealing component 3 and the valve ball, so that the tightness of the ball valve is enhanced.

The seal assembly 3 comprises an elastic seal ring 31 and a metal reinforcing ring 32, wherein the elastic seal ring 31 can be made of elastic materials such as Polytetrafluoroethylene (PTFE) or PPL (synthetic material), the metal reinforcing ring 32 is embedded in the elastic seal ring 31 through an encapsulation process, the metal reinforcing ring 32 is firmly combined in the elastic seal ring 31 and is not easy to fall off, and under the condition of high-pressure medium impact, the elastic seal ring 31 is reinforced through the metal reinforcing ring 32, so that the elastic seal ring 31 is prevented from shifting or deforming, and the sealing stability is achieved; the elastic support assembly 4 comprises a spring 41 and a sliding ring 42, the surface of the sliding ring 42 is smooth, the material is light and the strength is high, when high-pressure medium is impacted, the valve ball 2 is deflected, the springs 41 on the two sides of the valve ball 2 are stressed by the same direction, the springs 41 at the water inlet are stretched, the springs 41 at the water outlet are compressed, the springs 41 axially abut against the sliding ring 42, the sliding ring 42 axially slides on the inner peripheral wall of the sealing element mounting groove 5 through the elastic force of the springs 41, so that the sliding ring 42 axially abuts against the elastic sealing ring 31, and a pretightening force is formed between the elastic sealing ring 31 and the valve ball 2 through the repulsive force of the springs 41, so that the elastic sealing ring 31 still abuts against the surface of the valve ball 2, and the sealing property of the ball valve is ensured; when the valve is not impacted by the medium, for example, no medium exists in the valve tube 1, at the moment, the stress of the springs 41 at the two ends of the valve ball 2 is the same, the two sealing assemblies 3 and the two elastic supporting assemblies 4 are reset, the elastic sealing ring 31 still collides with the surface of the valve ball 2 by the repulsive force of the springs 41, and the tightness of the ball valve is ensured.

Example 2:

the present embodiment provides a sealing ball valve having the following technical features in addition to the technical scheme including the above embodiment.

The elastic seal ring 31 includes:

an elastic seal ring body 311;

the arc-shaped sealing surface 312 is arranged on one side of the elastic sealing ring body 311 and is abutted against the valve ball 2.

In this technical scheme, arc sealing face 312 is circular-arc, and contradicts with valve ball 2 surface, reduces seal assembly 3 and valve ball 2's area of contact to reduce frictional resistance, reduce the moment of torsion when the ball valve is opened and is closed, make the ball valve open and close more easily.

Example 3:

The elastic sealing ring 31 further includes two sealing protrusions 313, and the two sealing protrusions 313 are axially disposed on the elastic sealing ring body 311 and abut against the sliding ring 42.

In this technical scheme, set up two sealed protruding 313 on elastic seal ring body 311, the surface is convex, when compressing tightly seal assembly 3 through valve ball 2, realizes better leakproofness, through elastic deformation, makes seal assembly 3 have more spaces in the axial, avoids the too big compressive force between valve ball 2 and seal assembly 3, further reduces the moment of torsion when the ball valve is opened and is closed.

Example 4:

The metal reinforcing ring 32 includes:

a reinforcing ring 321;

and a supporting portion 322, wherein the supporting portion 322 is disposed on the inner wall of the reinforcing ring 321.

In the technical scheme, the section of the metal reinforcing ring 32 is T-shaped, the reinforcing ring 321 is cylindrical, the supporting effect on the elastic sealing ring 31 is better, the supporting part 322 is arranged on the inner wall of the reinforcing ring 321, the reinforcing ring 321 is supported, the structural stability is ensured, and the deformation is prevented; the cross section of the metal reinforcing ring 32 may be L-shaped or H-shaped.

Example 5:

The sealing element mounting groove 5 is provided with an annular boss 6 which is used for axially abutting against the spring 41, one end of the sliding ring 42, which is opposite to the elastic sealing ring 31, is provided with a positioning ring 7, and the spring 41 is sleeved on the positioning ring 7.

In this technical scheme, through be provided with on sealing member mounting groove 5 be used for with the annular boss 6 of spring 41 axial conflict, slip ring 42 is provided with the holding ring 7 in the elastic sealing ring 31 one end dorsad, and spring 41 cover is established on slip ring 42, makes in the space between annular boss 6 and the holding ring 7 is arranged in to spring 41, stabilizes spring 41 structure.

Example 6:

The outer peripheral wall of the positioning ring 7 is in sliding fit with the inner peripheral wall of the annular boss 6, and a plurality of pressure release grooves 8 are axially formed in the inner peripheral wall of the annular boss 6.

In the technical scheme, the spring 41 stretches in the space between the sliding ring 42 and the annular boss 6, so that the sliding ring 42 slides and rubs on the surfaces of the annular boss 6 and the sealing element mounting groove 5, and the inner peripheral wall of the annular boss 6 is axially provided with a plurality of pressure release grooves 8, so that a medium can enter and exit the space in which the spring 41 is placed, pressure release is performed, and normal sliding of the sliding ring 42 is ensured.

Example 7:

The periphery wall of the elastic sealing ring 31 is provided with a sealing ring mounting groove 9, an elastic sealing ring 10 is arranged in the sealing ring mounting groove 9, and the elastic sealing ring 10 is abutted against the inner periphery wall of the sealing piece mounting groove 5.

In this technical scheme, elastic sealing washer 10 contradicts with sealing member mounting groove 5 inner peripheral wall, further improves the leakproofness of ball valve, sets up elastic sealing washer 10 in sealing washer mounting groove 9, when live time is too long, leads to elastic sealing washer 10 wearing and tearing, can conveniently take out to change, need not to replace whole seal assembly 3, practices thrift the cost.

Example 8:

The valve tube 1 includes:

a first pipe 11;

the second pipeline 12, the first pipeline 11 is connected with the second pipeline 12 through being provided with two flanges 13, and a sealing gasket 14 is arranged between the two flanges 13.

In this technical scheme, be equipped with two ring flanges 13 between first pipeline 11 and the second pipeline 12 and connect, connect through a plurality of screws between two ring flanges 13, it is all more convenient with dismantling, and firm in connection, the leakproofness is good, is provided with sealing washer 14 between two ring flanges 13, further improves the leakproofness of ball valve, can avoid the medium leakage.

The embodiments of the present application and the features of the embodiments may be combined without conflict, and the present application is not limited to the specific embodiments described above, which are merely illustrative, not restrictive, and many forms may be made by those of ordinary skill in the art, without departing from the spirit of the present application and the scope of the claims, which are also within the protection of the present application.

Claims

1. A sealed ball valve, comprising:

the valve pipe (1) is internally symmetrically provided with two sealing element mounting grooves (5);

a valve ball (2), the valve ball (2) being arranged between two seal mounting grooves (5);

the two sealing assemblies (3) are respectively arranged in the two sealing element mounting grooves (5) and are in contact with the valve ball (2);

the two elastic support assemblies (4) are respectively arranged in the two sealing element mounting grooves (5) and axially abut against the two sealing assemblies (3);

the sealing assembly (3) comprises an elastic sealing ring (31) and a metal reinforcing ring (32), wherein the metal reinforcing ring (32) is embedded in the elastic sealing ring (31); the elastic support assembly (4) comprises a spring (41) and a sliding ring (42), the sliding ring (42) axially abuts against the elastic sealing ring (31), and the spring (41) axially abuts against the sliding ring (42).

2. A sealing ball valve according to claim 1, characterized in that said elastic sealing ring (31) comprises:

an elastic seal ring body (311);

the arc-shaped sealing surface (312) is arranged on one side of the elastic sealing ring body (311) and is abutted against the valve ball (2).

3. A sealing ball valve according to claim 2, characterized in that the elastic sealing ring (31) further comprises two sealing protrusions (313), said two sealing protrusions (313) being axially arranged on the elastic sealing ring body (311) and abutting against the sliding ring (42).

4. A sealing ball valve according to claim 1, wherein the metal reinforcing ring (32) comprises:

a reinforcing ring (321);

and the supporting part (322) is arranged on the inner wall of the reinforcing ring (321).

5. A sealing ball valve according to claim 1, characterized in that the sealing member mounting groove (5) is provided with an annular boss (6) for axially abutting against the spring (41), one end of the sliding ring (42) facing away from the elastic sealing ring (31) is provided with a positioning ring (7), and the spring (41) is sleeved on the positioning ring (7).

6. The sealing ball valve according to claim 5, wherein the outer peripheral wall of the positioning ring (7) is in sliding fit with the inner peripheral wall of the annular boss (6), and a plurality of pressure release grooves (8) are axially formed in the inner peripheral wall of the annular boss (6).

7. A sealing ball valve according to claim 1, characterized in that the outer peripheral wall of the elastic sealing ring (31) is provided with a sealing ring mounting groove (9), an elastic sealing ring (10) is arranged in the sealing ring mounting groove (9), and the elastic sealing ring (10) is abutted against the inner peripheral wall of the sealing member mounting groove (5).

8. A sealing ball valve according to claim 1, characterized in that the valve tube (1) comprises:

a first pipe (11);

the second pipeline (12), connect through being equipped with two ring flanges (13) between first pipeline (11) and the second pipeline (12), be provided with sealing washer (14) between two ring flanges (13).