Wear-resistant ball valve

Abstract

The utility model relates to a wear-resisting ball valve, which relates to the technical field of valves, and comprises a ball valve main body, a plurality of limiting components and a plurality of abutting components, the ball valve main body comprises a valve body, a valve seat and a valve core are arranged in the valve body, a sealing ring matched with the valve core to form a seal is arranged on the valve seat, and a driving mechanism for driving the valve core to rotate is arranged on the valve body; the limiting assembly comprises a plurality of springs, and the springs are arranged between the valve seat and the valve body. The abutting assembly comprises a rotating shaft rotationally installed on the valve seat and a limiting ring fixedly installed on the valve body, and a plurality of grooves are formed in the limiting ring. Through the limiting assembly and the abutting assembly, the friction degree between the valve element force and the sealing ring in the rotating process is reduced, the sealing performance of the ball valve is improved, and the service life of the ball valve is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of valves, in particular to a wear-resistant ball valve. Background Art

[0002] The opening and closing part (ball) of the ball valve is driven by the valve stem and rotates around the axis of the ball valve; the electric control valve is an important execution unit instrument in industrial automation process control. Compared with the traditional control valve, it has obvious advantages: the electric control valve is energy-saving (only consumes electricity when working) and environmentally friendly (no carbon emissions), and the electric control valve consists of two parts: the actuator and the control valve (regulating mechanism).

[0003] During the long-term operation of the ball valve, friction will occur between the ball and the surrounding structures, especially the sealing ring, which will cause wear on the valve core and the sealing ring, and the sealing performance and service life of the ball valve will be greatly reduced. Utility Model Content

[0004] The utility model provides a wear-resistant ball valve, which can improve the technical problem in the related art that the valve core of the ball valve often rotates during operation, which causes friction with the sealing ring, causes wear of the valve core and the sealing ring, and reduces the sealing performance.

[0005] The embodiment of the present application provides a wear-resistant ball valve, comprising: a ball valve body, a plurality of limit assemblies and a plurality of abutment assemblies, the ball valve body comprising a valve body, a valve seat and a valve core are arranged in the valve body, a sealing ring is arranged on the valve seat to form a seal with the valve core, and a driving mechanism for driving the valve core to rotate is arranged on the valve body;

[0006] The limiting assembly includes a plurality of springs, and the springs are arranged between the valve seat and the valve body;

[0007] The abutment assembly comprises a rotating shaft rotatably mounted on the valve seat and a limiting ring fixedly mounted on the valve body, wherein a plurality of grooves are formed on the limiting ring.

[0008] The above technical solutions in the embodiments of the present application have at least the following technical effects:

[0009] After the ball valve is in the open state, when it is necessary to close the ball valve, the driving mechanism is started, the valve core rotates, the rotating shaft abuts against the side wall of the groove, the spring is compressed, the valve seat moves to the side away from the valve core, and the sealing ring moves away from the valve core until the rotating shaft is separated from the groove and slides and fits with the side wall of the limit ring. The valve core continues to rotate until the rotating shaft corresponds to the next groove, and the rotating shaft is stuck in the groove under the elastic force of the spring, and the sealing ring approaches the valve core to form a limit; at this time, the valve core abuts against the side wall of the sealing ring to form a seal; after the ball valve is in the closed state, when it is necessary to open the ball valve, the driving mechanism is started, the valve core rotates in the opposite direction, the rotating shaft abuts against the side wall of the groove, the spring is compressed, and the valve seat moves to the side away from the valve core, and the sealing ring moves away from the valve core until the rotating shaft is separated from the groove and slides and fits with the side wall of the limit ring. The cam is compressed and the valve seat moves to the side away from the valve core, and the sealing ring moves away from the valve core until the shaft is separated from the groove and slides and fits with the side wall of the limit ring. The valve core continues to rotate in the opposite direction until the shaft corresponds to the previous groove. The shaft is stuck in the groove under the elastic force of the spring, and the sealing ring approaches the valve core to form a limit. At this time, the valve core and the side wall of the sealing ring are against each other, and the valve core channel is connected with the medium channel of the valve body to complete the opening. Therefore, the setting of the shaft, spring, limit ring and groove can greatly reduce the degree of friction between the valve core and the sealing ring during rotation, reduce the probability of wear between the sealing ring and the valve core, and increase the sealing performance and service life of the ball valve.

[0010] A wear-resistant ball valve provided in an embodiment of the present application can greatly reduce the degree of friction between the valve core and the sealing ring during rotation, thereby increasing the sealing performance and service life of the ball valve.

[0011] In some embodiments, a plurality of limiting hooks are provided on the limiting ring.

[0012] In some embodiments, the spring is installed by opening a groove on the valve body and the valve seat.

[0013] In some embodiments, a fixing ring is fixedly installed in the valve body, and the side wall of the fixing ring is in contact with the side wall of the valve seat.

[0014] In some embodiments, the groove is arc-shaped.

[0015] In some embodiments, the valve seat is provided with a limiting groove to install a sealing ring, and recesses are provided on both the inner and outer sides of the sealing ring, and the inner and outer side walls of the limiting groove are in contact with the side walls of the groove.

[0016] In some embodiments, flanges are provided on both sides of the valve body, and threaded holes are provided on the flanges. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0018] Figure 1 A schematic side view of the structure of a wear-resistant ball valve provided in an embodiment of the present application;

[0019] Figure 2 For along Figure 1 The cross-sectional structure diagram along the AA line;

[0020] Figure 3 for Figure 2 Enlarged view of middle part B;

[0021] Figure 4 It is a schematic diagram of the three-dimensional structure between the valve core and the valve seat when the valve core is in an open state;

[0022] Figure 5 for Figure 4 Enlarged view of middle C;

[0023] Figure 6 It is a schematic diagram of the three-dimensional structure between the valve core and the valve seat when the valve core is in a closed state;

[0024] Figure 7 for Figure 6 Enlarged view of part D in the middle.

[0025] Among them, the reference numerals in the figure are:

[0026] 10. Ball valve body; 11. Valve body; 12. Valve seat; 121. Limit groove; 13. Valve core; 14. Sealing ring; 141. Notch; 15. Driving mechanism; 16. Storage groove; 17. Flange; 171. Threaded hole; 20. Limit assembly; 21. Spring; 22. Fixing ring; 30. Abutment assembly; 31. Rotating shaft; 32. Limit ring; 321. Groove; 33. Limit hook. DETAILED DESCRIPTION

[0027] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present application more clearly understood, the present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0028] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art to which this application belongs; the terms used herein are only for the purpose of describing specific embodiments and are not intended to limit this application. The terms "including" and "having" and any variations thereof in the specification and claims of this application and the above-mentioned figure descriptions are intended to cover non-exclusive inclusions.

[0029] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0030] It should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0031] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0032] In this application, "and / or" is only a description of the association relationship of associated objects, indicating that there can be three relationships; for example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this article generally indicates that the associated objects before and after are in an "or" relationship.

[0033] It should be noted that, in the present application, words such as "in some embodiments", "exemplarily", "for example", etc. are used to indicate examples, illustrations or descriptions. Any embodiment or design described in the present application as "in some embodiments", "exemplarily", "for example" should not be interpreted as being more preferred or more advantageous than other embodiments or designs. Specifically, the use of words such as "in some embodiments", "exemplarily", "for example", etc. is intended to present related concepts in a concrete way, meaning that specific features, structures or characteristics described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the above words in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0034] The opening and closing parts of the ball valve are driven by the valve stem and rotate around the axis of the ball valve; the electric control valve is an important execution unit instrument in industrial automation process control, and has obvious advantages over traditional control valves: the electric control valve is energy-saving and environmentally friendly, and the electric control valve consists of two parts: the actuator and the control valve.

[0035] During the long-term operation of the ball valve, friction will occur between the ball and the surrounding structures, especially the sealing ring, which will cause wear on the valve core and the sealing ring, and the sealing performance and service life of the ball valve will be greatly reduced.

[0036] Based on this, the technical problem in the related technology that the valve core often rotates during operation, causing friction with the sealing ring and causing wear of the valve core and the sealing ring can be improved. The embodiment of the present application provides the following solution.

[0037] The embodiment of the present application provides a wear-resistant ball valve, comprising:

[0038] A ball valve body 10, a plurality of limit assemblies 20 and a plurality of abutment assemblies 30, wherein the ball valve body 10 comprises a valve body 11, wherein a valve seat 12 and a valve core 13 are arranged in the valve body 11, wherein a sealing ring 14 is arranged on the valve seat 12 to form a seal with the valve core 13, and a driving mechanism 15 is arranged on the valve body 11 to drive the valve core 13 to rotate;

[0039] The limiting assembly 20 includes a plurality of springs 21, and the springs 21 are arranged between the valve seat 12 and the valve body 11;

[0040] The abutment assembly 30 includes a rotating shaft 31 rotatably mounted on the valve seat 12 and a limiting ring 32 fixedly mounted on the valve body 11 . The limiting ring 32 is provided with a plurality of grooves 321 .

[0041] The spool 13 is in the closed position and the spool 13 is in the closed position and the spool 13 is in the closed position and the spool 13 is in the closed position and the spool 13 is in the closed position and the spool 13 is in the closed position and the spool 13 is in the closed position and the spool 13 is in the closed position and the spool 13 is in the closed position and the spool 13 is in the closed position and the spool 13 is in the closed position and the spool 13 is in the closed position and the spool 13 is in the closed position and the spool 13 is in the closed position and the spool 13 is in the closed position and the spool 13 is in the closed position and the spool 13 is in the closed position and the spool 13 is in the closed position and the spool 13 is in the closed position and the spool 13 is in the closed position and the spool 13 is in the closed position and the spool 13 is in the closed position and the spool 13 is in the closed position and the spool 13 is in the closed position and the spool 13 is in the closed position and the spool 13 is in the closed position and the spool 13 is in the closed position and the spool 13 is in the closed position and the spool 13 is in the closed position and the spool 13 is in the closed position and the spool 13 is in the closed position and the spool 13 is in the closed position and the spool 13 is in the closed position and the spool 13 is in the closed position and the spool 13 is in the closed position and the spool 13 is in the closed position and the spool The valve core 13 is moved away from the side of the valve core 13, and the sealing ring 14 is moved away from the valve core 13 until the shaft 31 is separated from the groove 321 and slides and fits with the side wall of the limiting ring 32, and the valve core 13 continues to rotate in the reverse direction until the shaft 31 corresponds to the previous groove 321, the shaft 31 is stuck in the groove 321 under the elastic force of the spring 21, and the sealing ring 14 is close to the valve core 13 to form a limit; at this time, the valve core 13 and the side wall of the sealing ring 14 are against each other, the valve core 13 channel is connected with the medium channel of the valve body 11, and the opening is completed; therefore, the setting of the spring 21, the limiting ring 32 and the groove 321 can greatly reduce the degree of friction between the valve core 13 and the sealing ring 14 during the rotation process, reduce the probability of wear between the sealing ring 14 and the valve core 13, and increase the sealing performance and service life of the ball valve; and rolling friction occurs between the shaft 31 and the limiting ring 32, and the friction force is small, which is conducive to the long-term use of the shaft 31 and the limiting ring 32.

[0042] Optionally, in some embodiments, see Figure 1 to Figure 2 Flanges 17 are provided on both sides of the valve body 11 , and threaded holes 171 are opened on the flanges 17 .

[0043] With such arrangement, when installing the ball valve, the ball valve is placed between two pipes and connected and fixed through the threaded holes 171 on the flange 17. Therefore, the arrangement of the flange 17 and the threaded holes 171 facilitates the user to install the ball valve on the pipe.

[0044] Optionally, in some embodiments, see Figure 3 The valve seat 12 is provided with a limiting groove 121 to install the sealing ring 14 . The sealing ring 14 is provided with notches 141 on both the inner and outer sides. The inner and outer side walls of the limiting groove 121 are in contact with the side walls of the groove 321 .

[0045] With such a configuration, the sealing ring 14 is clamped in the limiting groove 121 through the recess 141. When the valve seat 12 slides, the sealing ring 14 is difficult to separate from the limiting groove 121. Therefore, the configuration of the limiting groove 121 and the recess 141 enables the valve seat 12 to further fix the sealing ring 14, making it difficult for the sealing ring 14 to separate from the valve seat 12.

[0046] Optionally, in some embodiments, please read Figures 4 to 7 The limiting ring 32 is provided with a plurality of limiting hooks 33 .

[0047] With such arrangement, when the ball valve needs to be closed, the driving mechanism 15 is started, the valve core 13 rotates, and slides and fits against the side wall of the limit ring 32, rolling friction occurs, and the valve core 13 continues to rotate until the shaft 31 corresponds to the groove 321. The shaft 31 is inserted into the groove 321 under the elastic force of the spring 21, and the sealing ring 14 is tightly against the valve core 13 to form a seal; the shaft 31 is engaged in the limit hook 33. Therefore, the setting of the limit hook 33 further fixes the shaft 31, which is used to reduce the probability of the valve seat 12 shaking when the ball valve is closed, thereby enhancing the sealing performance of the ball valve.

[0048] Optionally, in some embodiments, see Figures 2 to 3 The valve body 11 and the valve seat 12 are provided with a groove 16 to install a spring 21 . Both ends of the spring 21 are fixedly installed on the valve body 11 and the valve seat 12 , respectively. A plurality of springs 21 are distributed in a circular array in the valve body 11 .

[0049] With such arrangement, when the valve core 13 is rotated, the rotating shaft 31 is in a state of rolling friction with the limit ring 32, and the valve seat 12 is likely to drive the spring 21 to shake. The spring 21 is distributed in an annular array in the valve body 11, so that the valve seat 12 can be evenly stressed. The two ends of the spring 21 are respectively fixedly mounted on the valve body 11 and the valve seat 12, and are arranged in the storage groove 16, which can be used to reduce the probability of the valve seat 12 falling off.

[0050] Optionally, in some embodiments, see Figures 2 to 3 A fixing ring 22 is fixedly installed in the valve body 11 , and the side wall of the fixing ring 22 is in contact with the side wall of the valve seat 12 .

[0051] With such arrangement, when the valve core 13 is rotated, the rotating shaft 31 is in a state of rolling friction with the limiting ring 32, the valve seat 12 slides, and the side wall of the fixing ring 22 slides and fits with the side wall of the valve seat 12. Therefore, the arrangement of the fixing ring 22 further reduces the probability of the valve seat 12 falling off during the sliding process.

[0052] Optionally, in some embodiments, see Figures 4 to 7 , the groove 321 is arc-shaped.

[0053] With such arrangement, after the rotating shaft 31 is inserted into the groove 321, when the valve core 13 is rotated, the rotating shaft 31 is in rolling friction with the inner wall of the groove 321, the spring 21 is compressed, the valve seat 12 moves to the side away from the valve core 13, and the sealing ring 14 moves away from the valve core 13 until the rotating shaft 31 is separated from the groove 321. Therefore, the groove 321 is arranged in an arc shape, so that during the rotation of the valve core 13, the rotating shaft 31 can always be in contact with the inner wall of the groove 321 until it is separated from the groove 321, so that the valve core 13 is subject to less resistance during the rotation.

[0054] The above description is only a preferred embodiment of the present application and is not intended to limit the present application. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present application should be included in the protection scope of the present application.

Claims

1. A wear-resistant ball valve, comprising a ball valve body (10), the ball valve body (10) comprising a valve body (11), a valve seat (12) and a valve core (13) being arranged in the valve body (11), a sealing ring (14) being arranged on the valve seat (12) and cooperating with the valve core (13) to form a seal, a driving mechanism (15) for driving the valve core (13) to rotate being arranged on the valve body (11), characterized in that , also includes: A plurality of limit assemblies (20), wherein the limit assemblies (20) include a plurality of springs (21), and the springs (21) are arranged between the valve seat (12) and the valve body (11); A plurality of abutment assemblies (30), wherein the abutment assemblies (30) comprise a rotating shaft (31) rotatably mounted on a valve seat (12), a limiting ring (32) fixedly mounted on a valve body (11), and a plurality of grooves (321) are formed on the limiting ring (32).

2. A wear-resistant ball valve according to claim 1, characterized in that: The limiting ring (32) is provided with a plurality of limiting hooks (33).

3. A wear-resistant ball valve according to claim 2, characterized in that: The valve body (11) and the valve seat (12) are both provided with a material groove (16) for installing a spring (21).

4. A wear-resistant ball valve according to any one of claims 1 to 3, characterized in that: A fixing ring (22) is fixedly installed in the valve body (11), and a side wall of the fixing ring (22) is in contact with a side wall of the valve seat (12).

5. A wear-resistant ball valve according to claim 4, characterized in that: The groove (321) is arc-shaped.

6. The wear-resistant ball valve according to claim 1, characterized in that: The valve seat (12) is provided with a limiting groove (121) to install the sealing ring (14); both inner and outer sides of the sealing ring (14) are provided with recesses (141); and the inner and outer side walls of the limiting groove (121) are in contact with the side walls of the groove (321).

7. The wear-resistant ball valve according to claim 1, characterized in that: Flanges (17) are provided on both sides of the valve body (11), and threaded holes (171) are provided on the flanges (17).

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