CN220249005U

CN220249005U - Ball valve

Info

Publication number: CN220249005U
Application number: CN202322295551.2U
Authority: CN
Inventors: 陈盛亿; 陈长青; 刘飞飞; 陈永源; 李军; 崔远明; 陈盛金
Original assignee: Ticos Technology Group Lishui Fluid Equipment Co ltd
Current assignee: Ticos Technology Group Lishui Fluid Equipment Co ltd
Priority date: 2023-08-24
Filing date: 2023-08-24
Publication date: 2023-12-26
Anticipated expiration: 2033-08-24

Abstract

The utility model belongs to the technical field of valves, and particularly relates to a ball valve, which comprises: a valve housing provided with an inlet, an outlet and a valve core chamber; a ball member disposed in the spool chamber and having a shaft connected to the motor; further comprises: a seal mounted for movement with the ball member to provide a seal against the valve housing; the sealing area is arranged on the valve shell; wherein the seal is mounted in a groove formed in the ball member, and the groove and the seal have the same general cross-sectional shape, the seal sealing with the valve housing at the sealing area. Compared with the prior art, the utility model effectively reduces the abrasion of the sealing element and prolongs the service life of the sealing element.

Description

Ball valve

Technical Field

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

Background

The valve is a pipeline accessory for opening and closing a pipeline, controlling flow direction, adjusting and controlling parameters (temperature, pressure and flow) of a conveying medium, is a control component in a fluid conveying system, has the functions of stopping, adjusting, guiding, preventing backflow, stabilizing pressure, shunting or overflow pressure relief and the like, is used for the fluid control system, and has quite various varieties and specifications from the simplest stop valve to various valves used in a very complex automatic control system;

the valve can be used for controlling the flow of various types of fluids such as air, water, steam, various corrosive media, slurry, oil products, liquid metal, radioactive media and the like, and is also divided into cast iron valves, cast steel valves, stainless steel valves (201, 304, 316 and the like), chromium molybdenum steel valves, chromium molybdenum vanadium steel valves, double-phase steel valves, plastic valves, nonstandard custom valves and the like according to materials;

valves are used in many applications to control the flow of fluids, one known type of valve is a so-called ball valve in which a generally spherical ball member has a passageway through a central portion, a ball is mounted in a housing having a fluid inlet and a fluid outlet, the ball is rotatable about an axis such that the passageway is aligned between the inlet and the outlet and the fluid can flow, or to a point where the ball blocks the inlet from connecting to the outlet, seals are known in ball valve systems, seals are typically mounted in the housing around the ball member and are typically complex and large, such as the electrically operated ball valve disclosed in the patent application number CN202211646621.8, existing ball valve seals contact the seal over its entire surface during full movement, there is more wear on the seal, reducing the service life of the seal, and thus, a need for improvement.

Disclosure of Invention

The utility model aims to solve the technical problems and provides a ball valve for prolonging the service life of a ball valve sealing element.

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

a valve housing provided with an inlet, an outlet and a valve core chamber;

a ball member disposed in the spool chamber and having a shaft connected to the motor;

further comprises:

a seal mounted for movement with the ball member to provide a seal against the valve housing;

a sealing zone disposed on the valve housing;

wherein the seal is mounted in a groove formed in the ball member, and the groove and the seal have the same general cross-sectional shape, the seal sealing with the valve housing at a sealing area.

In the technical scheme, in the process of using the ball valve, the motor control shaft drives the ball component to move so as to control the opening and closing of the ball valve, and compared with the prior art that the sealing element is contacted on the whole surface of the ball component during the movement of the ball component, the sealing element is at least partially not contacted with the valve shell during the most of the movement, so that the abrasion of the sealing element is effectively reduced and the service life of the sealing element is prolonged.

In the above technical solution, further, the method further includes:

an end cap formed at one side of the ball member;

wherein the seal is disposed between the end cap and the ball member.

In the above technical solution, further, the end cap is fixed to the ball member by a bolt.

In the above solution, further, the end cap is facing the inlet end in the closed position of the ball valve to enable the seal to seal against the valve housing.

In the above solution, further, the valve housing is formed of at least two parts connected together.

In the above solution, further, the seal has a chamfered radially outer surface sealing against the surface of the hair housing.

In the above technical solution, further, the method further includes:

a tetrafluoro liner disposed on an inner wall of the valve housing.

In the above technical solution, further, the method further includes:

and a packing disposed between the shaft and the valve housing.

The beneficial effects of the utility model are as follows:

1. by improving the sealing element, the sealing element is at least partially not contacted with the valve housing during most of movement, so that the abrasion of the sealing element is effectively reduced and the service life of the sealing element is prolonged;

2. the corrosion resistance of the ball valve is improved through the arrangement of the tetrafluoro lining;

3. the sealing performance of the ball valve is improved through the arrangement of the filler.

Drawings

In order to more clearly illustrate the embodiments of the utility model or the technical solutions of the prior art, the drawings which are used in the description of the embodiments or the prior art will be briefly described, it being obvious that the drawings in the description below are only some embodiments of the utility model, and that other drawings can be obtained according to these drawings without inventive faculty for a person skilled in the art.

FIG. 1 is a schematic structural diagram of an embodiment of the present utility model.

FIG. 2 is a schematic view of the closed state structure of the ball valve of the utility model.

FIG. 3 is a schematic view of the seal structure of the present utility model.

Fig. 4 is a schematic view showing the open state structure of the ball valve of the present utility model.

Fig. 5 is a partially enlarged view of the portion a of fig. 4 according to the present utility model.

The label in the figure is:

1-valve housing, 100-inlet, 101-outlet, 102-spool chamber, 2-ball member, 20-shaft, 21-groove, 3-motor, 4-seal, 5-seal area, 6-end cap, 7-bolt, 8-tetrafluoro liner, 9-packing, 10-fluid source, 11-second portion, 12-first portion, 14-central passage, 15-user.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

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 embodiment of the application provides a ball valve, including: a valve housing 1, an inlet 100, an outlet 101, and a spool chamber 102 are provided on the valve housing 1; a ball member 2, the ball member 2 being disposed in the spool chamber 102 and having a shaft 20 connected to the motor 3, the ball member 2 being provided with a groove 21;

further comprises: a seal 4, the seal 4 being mounted for movement with the ball member 2 to provide a seal against the valve housing 1; a sealing zone 5, the sealing zone 5 being arranged on the valve housing 1;

wherein the seal 4 is mounted in a groove 21 formed in the ball member 2 and the groove 21 and the seal 4 have the same general cross-sectional shape, the seal 4 sealing against the valve housing 1 in the sealing zone 5.

Further comprises: an end cap 6, the end cap 6 being formed at one side of the ball member 2;

wherein the seal 4 is arranged between the end cap 6 and the ball member 2.

The end cap 6 is fixed to the ball member 2 by bolts 7.

The end cap 6 faces the inlet end when the ball valve is in the closed position to enable the seal 4 to seal against the valve housing.

The valve housing 1 is formed of at least two parts that are connected together.

The seal 4 has a chamfered radially outer surface that seals against the surface of the valve housing 1.

Moreover, the use of a ball valve to connect a fluid source 10 to a fluid, the valve may comprise a second portion and a first portion 12 connected to the second portion 11, the motor 3 may rotate a ball member 2, the ball member 2 being comprised of a shaft 20, a ball, an end cap 6, the ball being substantially spherical, the ball being received within a spool chamber 102 within the valve housing 1, the ball member 2 being to block flow between an inlet 100 receiving the fluid from the fluid source to an outlet 101 to deliver the fluid to a location of a user 15, the ball member 2 further comprising a central passage 14 shown passing through the ball but not connecting the inlet 100 to the outlet 101 in this location, it being well known that the ball may be substantially spherical, although it need not be entirely spherical;

the end cap 6 of the ball member 2 is connected to the ball, the bolt 7 is connected to both, and the seal 4 seals the valve housing 1 on the inlet 100 side;

the seal 4 is received in a groove 21 extending 360 degrees around the sphere, the groove 21 may be formed in the end cap 6 rather than in this position, the first portion being shown as having an internal profile on which the seal 4 seals, i.e. the sealing region 5, it being seen that the seal 4 has a taper on the outer surface to provide a good seal;

the ball member 2 is formed as a single component with the shaft 20, however, it should be understood that the shaft 20 may be formed as a separate component and attached to the ball member 2, and furthermore, the present utility model will be beneficial for ball valves where the ball member 2 has only a single shaft 20;

the seal 4 may be a metal seal ring, although other materials may be used;

the ball member 2 blocks flow between the inlet 100 and the outlet 101 and when it is desired to allow fluid flow, the motor 3 rotates the ball member 2 into the plane of fig. 2 and into the position of fig. 4, typically the ball member 2 is rotated 90 degrees, now the central passage is aligned with the inlet 100 and the outlet 101 and fluid can flow, in one application the fluid source may be a compressor of a gas turbine engine and other uses which may be venting to the atmosphere, an anti-icing system or hot air are used, for example, an air management system for indoor climate control may also use such ball valves.

In this embodiment, during the use of the ball valve, the motor 3 controls the shaft 20 to drive the ball member 2 to move, so as to control the opening and closing of the ball valve, and compared with the prior art that the sealing element 4 contacts on the whole surface of the ball member 2 during the movement, the sealing element 4 is at least partially not contacted with the valve housing 1 during the most part of the movement, so that the abrasion of the sealing element 4 is effectively reduced and the service life of the sealing element 4 is prolonged.

Example 2:

the present embodiment provides a ball valve, which includes the following technical features in addition to the technical scheme of the above embodiment, and further includes: a tetrafluoro liner 8, the tetrafluoro liner 8 being provided on the inner wall of the valve housing 1.

The tetrafluoro liner 8 is a polytetrafluoroethylene liner.

In the embodiment, the polytetrafluoroethylene has the advantages of excellent heat resistance and cold resistance, and can be used for a long time at the temperature of-180-260 ℃, so that the polytetrafluoroethylene lining 8 has higher corrosion resistance due to the characteristics of acid resistance, alkali resistance and various organic solvents resistance, the corrosion resistance of the ball valve is improved, the corrosion inside the ball valve is prevented, and the service life of the ball valve is prolonged.

Example 3:

the present embodiment provides a ball valve, which includes the following technical features in addition to the technical scheme of the above embodiment, and further includes: a packing 9, the packing 9 being arranged between the shaft 20 and the valve housing 1.

In this embodiment, the sealing property of the ball valve can be improved and the occurrence of leakage phenomenon can be reduced by arranging the packing 9.

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 ball valve, comprising:

a valve housing (1), wherein an inlet (100), an outlet (101) and a valve core chamber (102) are arranged on the valve housing (1);

a ball member (2), the ball member (2) being disposed in the spool chamber (102) and having a shaft (20) connected to the motor (3), the ball member (2) being provided with a groove (21);

characterized by further comprising:

a seal (4), the seal (4) being mounted for movement with the ball member (2) to provide a seal to the valve housing (1);

a sealing region (5), the sealing region (5) being arranged on the valve housing (1);

wherein the seal (4) is mounted in a groove (21) formed in the ball member (2) and the groove (21) and the seal (4) have the same general cross-sectional shape, the seal (4) sealing against the valve housing (1) in a sealing zone (5).

2. The ball valve of claim 1, further comprising:

an end cap (6), the end cap (6) being formed on one side of the ball member (2);

wherein the seal (4) is arranged between the end cap (6) and the ball member (2).

3. A ball valve according to claim 2, wherein: the end cap (6) is fixed to the ball member (2) by means of bolts (7).

4. A ball valve according to claim 3, wherein: the end cap (6) faces the inlet end when the ball valve is in the closed position to enable the seal (4) to seal against the valve housing.

5. A ball valve according to claim 4, wherein: the valve housing (1) is formed of at least two parts connected together.

6. A ball valve according to claim 5, wherein: the seal (4) has a chamfered radially outer surface sealing against the surface of the valve housing (1).

7. The ball valve of claim 1, further comprising:

and a tetrafluoro lining (8), wherein the tetrafluoro lining (8) is arranged on the inner wall of the valve housing (1).

8. The ball valve of claim 1, further comprising: and a filler (9), wherein the filler (9) is arranged between the shaft (20) and the valve housing (1).