Modular quick-mounting ball valve

Abstract

The application relates to a modular quick-mounting ball valve, and relates to the technical field of ball valves.The valve body is internally formed with a valve cavity, two ends of the valve body are formed with an inlet end and an outlet end, and the inlet end and the outlet end are communicated with the valve cavity; a valve core ball and a valve rod are arranged in the valve body, the valve core ball is rotatably installed in the valve body, one end of the valve rod penetrates into the valve body and is connected with the valve core ball; a sealing assembly and a connecting assembly are arranged in the valve body, the sealing assembly seals between the ball valve and the valve body, and the connecting assembly is used for mounting the valve rod on the valve body.The application can prevent the valve rod and the valve core ball from leaking from the valve body during use, so that the ball valve can be normally used.

Description

Technical Field

[0001] This application relates to the field of ball valve technology, and in particular to modular quick-install ball valves. Background Technology

[0002] Currently, a ball valve is a type of valve that controls the flow of fluid by rotating a ball with a through hole. Its core component is the ball with a central channel. When the ball rotates 90°, the channel aligns with the pipe to allow flow; when it is perpendicular, the flow is cut off. Based on structure, ball valves can be divided into floating (the ball has no fixed support and relies on the pressure of the medium to achieve a seal) and fixed (the ball is fixed at both ends by bearings, suitable for high-pressure conditions); based on sealing type, they can be divided into soft seal (using non-metallic materials) and hard seal (using metallic materials).

[0003] A Chinese patent with publication number CN105822825A discloses a ball valve. This ball valve includes: a valve body and a valve seat connected to each other, forming a valve cavity between the valve body and the valve seat; the valve body has an operating hole communicating with the valve cavity; a valve core ball rotatably disposed within the valve cavity; a valve stem, the first end of which is fixedly connected to the valve core ball, and the valve stem is rotatably disposed within the operating hole to drive the valve core ball to rotate; the valve body has an anti-rotation part; the ball valve further includes: a self-locking member movably sleeved on the second end of the valve stem along the axial direction of the valve stem, the self-locking member having a mating part that cooperates with the anti-rotation part; the self-locking member has a locking position for contacting the anti-rotation part with the mating part and an unlocking position for separating the anti-rotation part from the mating part; the self-locking member cannot rotate when in the locked position, and can rotate synchronously with the valve stem when in the unlocked position.

[0004] In related technologies, the valve core ball is rotatably placed inside the valve cavity, then the valve stem is connected to the valve core ball, and then the valve body is connected to the valve seat.

[0005] Regarding the aforementioned technologies, the inventors believe that as the valve stem and valve core ball rotate within the valve body and valve seat, leakage can easily occur between the valve stem and valve core ball and the valve body and valve seat, thereby affecting the normal use of the ball valve. Utility Model Content

[0006] The technical problem to be solved by this utility model is to provide a modular quick-install ball valve, which solves the technical problem that leakage easily occurs between the valve stem and valve core ball and the valve body and valve seat as the valve stem and valve core ball rotate in the valve body and valve seat, thereby affecting the normal use of the ball valve.

[0007] To achieve the above objectives, the present invention provides the following technical solution:

[0008] A modular quick-install ball valve includes a valve body with a valve cavity formed within it. The valve body has an inlet and an outlet at both ends, both communicating with the valve cavity. A valve core ball and a valve stem are disposed within the valve body. The valve core ball is rotatably mounted within the valve body, and one end of the valve stem passes through the valve body and connects to the valve core ball. A sealing assembly and a connecting assembly are disposed within the valve body. The sealing assembly seals the ball valve against the valve body, and the connecting assembly is used to mount the valve stem onto the valve body.

[0009] Furthermore, the valve body has an internal thread on the side near the inlet and outlet ends, which is used for connection with external pipelines.

[0010] Furthermore, the sealing assembly is provided with a first sealing ring and a second sealing ring, one end of which is pressed against the valve core ball, and the other end of which is pressed against the side of the valve body near the inlet end and the outlet end.

[0011] Furthermore, the sealing assembly includes a pressure column, which is threadedly connected to the side of the valve body near the inlet end. One end of the pressure column has a pressure groove, the first sealing ring is embedded in the pressure groove, and the side of the pressure column relative to the pressure groove has a rotation groove.

[0012] Furthermore, a support ring is formed on the side of the valve body near the outlet end, and the second sealing ring abuts against the support ring.

[0013] Furthermore, the connecting assembly includes a pressure plate, an installation groove is formed on the valve body, a positioning groove is formed on the side of the valve body near the installation groove, one end of the valve stem passes through the pressure plate, a limiting plate is formed on the valve stem, the limiting plate is embedded in the installation groove, the pressure plate is installed in the positioning groove, and an installation bolt is provided on the pressure plate, one end of the installation bolt passes through the pressure plate and is connected to the valve body.

[0014] Furthermore, a sealing gasket is provided on the valve stem, and a set of sealing gaskets is provided on each side of the limiting plate. One end of each set of sealing gaskets abuts against the limiting plate, and the other end abuts against the pressure plate and the valve body, respectively.

[0015] In summary, this application includes at least the following beneficial technical effects of modular quick-install ball valves:

[0016] 1. Place the valve core ball inside the valve cavity of the valve body, and then insert one end of the valve stem into the valve body. The valve stem is connected to the valve core ball. The valve stem is installed on the valve body through the connecting assembly. During use, the sealing assembly seals the gap between the valve core ball and the valve body, so that the valve stem and valve core ball are not prone to leakage when the valve body is in use, so that the ball valve can be used normally.

[0017] 2. The sealing of the valve core ball is improved during use by setting the first sealing ring, the second sealing ring, the support ring, and the pressure column;

[0018] 3. The stability of the valve stem's position on the valve body is improved by setting up the pressure plate, the limit plate, and the sealing gasket. Attached Figure Description

[0019] Fig. 1 This is a schematic diagram of the overall structure of the modular quick-install ball valve mainly provided in this application;

[0020] Fig. 2 This is an exploded view of the valve body structure, which is the main feature of this application.

[0021] Fig. 3 This is the sectional view of the valve body structure that is the main feature of this application.

[0022] Reference numerals: 1. Valve body; 11. Valve cavity; 12. Valve core ball; 13. Valve stem; 14. Inlet end; 15. Outlet end; 16. Internal thread; 2. Sealing assembly; 21. First sealing ring; 22. Second sealing ring; 23. Support ring; 24. Pressure column; 241. Pressure groove; 242. Rotation groove; 243. First annular groove; 244. First sealing ring; 3. Connecting assembly; 31. Pressure plate; 32. Mounting groove; 33. Positioning groove; 34. Limiting plate; 35. Mounting bolt; 36. Sealing gasket; 37. Second annular groove; 371. Second sealing ring. Detailed Implementation

[0023] In order to make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0024] The following is in conjunction with the appendix Figs. 1-3 This application will be described in further detail.

[0025] This application discloses a modular quick-install ball valve.

[0026] Reference Figs. 1-2A modular quick-install ball valve includes a valve body 1, within which a valve cavity 11 is formed. Further, a valve core ball 12 and a valve stem 13 are disposed on the valve body 1. The valve core ball 12 is embedded within the valve cavity 11, and the valve stem 13 is rotatably mounted on the valve body 1, with one end of the valve cavity 11 connected to the valve core ball 12. A sealing assembly 2 and a connecting assembly 3 are disposed on the valve body 1. The sealing assembly 2 seals the gap between the valve core ball 12 and the valve body 1, and the connecting assembly 3 mounts the valve stem 13 onto the valve body 1.

[0027] Reference Figs. 2-3 The valve cavity 11 is formed within the valve body 1, and the valve body 1 has an inlet end 14 and an outlet end 15 at its two ends, both of which are connected to the valve cavity 11. In use, the valve core ball 12 is inserted into the valve cavity 11 of the valve body 1 through the inlet end 14, and the valve core ball 12 is rotatably mounted within the valve cavity 11. During use, the inlet ends 14 and outlet ends 15 on both sides of the valve body 1 are connected to external pipelines. To improve the ease of connection between the external pipeline and the valve body 1, internal threads 16 are formed on both sides of the valve body 1 near the inlet ends 14 and outlet ends 15, allowing the external pipeline to be connected to the valve body 1 via these threads.

[0028] To improve the sealing performance between the valve core ball 12 and the valve body 1, the sealing assembly 2 includes a first sealing ring 21 and a second sealing ring 22, which are located on both sides of the valve core ball 12 near the inlet end 14 and the outlet end 15 of the valve body 1, respectively.

[0029] Furthermore, a support ring 23 is formed on the side of the valve body 1 near the outlet end 15, and the support ring 23 is integrally formed with the valve body 1. In use, the second sealing ring 22 is pressed between the support ring 23 and the valve core ball 12. A pressure post 24 is provided on the side of the valve body 1 near the inlet end 14. In use, the pressure post 24 is threadedly connected to the side of the valve body 1 near the inlet end 14, and the first sealing ring 21 is pressed between the pressure post 24 and the valve core ball 12. In order to improve the stability of the first sealing ring 21 pressing against the valve core ball 12, a pressure groove 241 is formed on the side of the pressure post 24 near the valve core ball 12, and the first sealing ring 21 is embedded in the pressure groove 241. Furthermore, a rotating groove 242 is provided on one side of the pressure column 24 relative to the pressure groove 241 along its axial direction. In use, one end of a flathead screwdriver is engaged in the rotating groove 242 of the pressure column 24, and then the pressure column 24 is driven to rotate. As the pressure column 24 rotates, the first sealing ring 21 deforms, thereby improving the sealing performance between the valve core ball 12 and the pressure column 24. In use, the sealing performance between the valve core ball 12 and the valve body 1 and the pressure column 24 can be adjusted simply by rotating the pressure column 24.

[0030] Furthermore, to improve the sealing between the pressure column 24 and the valve body 1, a first annular groove 243 is provided on the pressure column 24, and a first sealing ring 244 is installed in the first annular groove 243 of the pressure column 24. The first sealing ring 244 abuts against the pressure column 24 and the valve body 1. In use, the first sealing ring 244 seals the gap between the pressure column 24 and the valve body 1, thereby reducing liquid leakage.

[0031] Reference Figs. 2-3 The connecting assembly 3 includes a pressure plate 31. One end of the valve stem 13 is inserted into the valve cavity 11 of the valve body 1, and the other end is inserted out of the valve body 1. The end of the valve stem 13 that is inserted out of the valve body 1 passes through the pressure plate 31. Furthermore, the valve body 1 has a mounting groove 32, and a positioning groove 33 is provided on the side of the valve body 1 near the mounting groove 32. The positioning groove 33 communicates with the mounting groove 32. A limiting plate 34 is provided on the valve stem 13. The limiting plate 34 is generally annular and coaxial with the valve stem 13. In use, the limiting plate 34 on the valve stem 13 is embedded in the mounting groove 32 of the valve body 1, and the pressure plate 31 is installed in the positioning groove 33. The pressure plate 31 presses the limiting plate 34 into the mounting groove 32. The pressure plate 31 is provided with a mounting bolt 35. One end of the mounting bolt 35 passes through the pressure plate 31, and the other end of the mounting bolt 35 passing through the pressure plate 31 is threadedly connected to the valve body 1. In use, the limiting plate 34 is pressed into the mounting groove 32 of the valve body 1 by the pressure plate 31, which can reduce the movement of the valve body 1 to one side in the axial direction during use and improve the stability of the connection between the valve stem 13 and the valve core ball 12.

[0032] To improve the sealing performance between the valve stem 13 and the valve body 1, a sealing gasket 36 is provided on the valve stem 13. Two sets of sealing gaskets 36 are spaced apart on each side of the limiting plate 34, and both sets of sealing gaskets 36 are fitted onto the valve stem 13. When the mounting bolts 35 lock the pressure plate 31 onto the valve body 1, one end of each set of sealing gaskets 36 abuts against the limiting plate 34, and the other end abuts against the pressure plate 31 and the valve body 1. The sealing gaskets 36 not only maintain the sealing performance between the valve stem 13 and the valve body 1, but also improve the stability of the valve stem 13 on the valve body 1.

[0033] Furthermore, a second annular groove 37 is provided on the valve stem 13. Two sets of the second annular groove 37 are spaced apart along the axial direction of the valve stem 13. A second sealing ring 371 is fitted on each set of the second annular groove 37, and the second sealing ring 371 abuts against the valve stem 13 and the valve body 1. This improves the sealing performance between the valve stem 13 and the valve body 1 when the valve stem 13 rotates, reducing the leakage of liquid from between the valve stem 13 and the valve body 1.

[0034] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A modular quick-install ball valve, comprising a valve body (1), characterized in that: A valve cavity (11) is formed inside the valve body (1). An inlet end (14) and an outlet end (15) are formed at both ends of the valve body (1). Both the inlet end (14) and the outlet end (15) are connected to the valve cavity (11). A valve core ball (12) and a valve stem (13) are provided inside the valve body (1). The valve core ball (12) is rotatably installed inside the valve body (1). One end of the valve stem (13) passes through the valve body (1) and connects to the valve core ball (12). A sealing assembly (2) and a connecting assembly (3) are provided inside the valve body (1). The sealing assembly (2) seals the ball valve and the valve body (1). The connecting assembly (3) is used to install the valve stem (13) on the valve body (1). The sealing assembly (2) is provided with a first sealing ring (21) and a second sealing ring (22). One end of the first sealing ring (21) and the second sealing ring (22) are pressed against the valve core ball (12), and the other end is pressed against the side of the valve body (1) near the inlet end (14) and the outlet end (15). The sealing assembly (2) includes a pressure column (24), which is threaded to the side of the valve body (1) near the inlet end (14). One end of the pressure column (24) is formed with a pressure groove (241), the first sealing ring (21) is embedded in the pressure groove (241), and the side of the pressure column (24) opposite to the pressure groove (241) is formed with a rotating groove (242). A support ring (23) is formed on the side of the valve body (1) near the outlet end (15), and the second sealing ring (22) abuts against the support ring (23); The connecting assembly (3) includes a pressure plate (31), a mounting groove (32) is formed on the valve body (1), a positioning groove (33) is formed on the side of the valve body (1) near the mounting groove (32), one end of the valve stem (13) passes through the pressure plate (31), a limiting plate (34) is formed on the valve stem (13), the limiting plate (34) is embedded in the mounting groove (32), the pressure plate (31) is installed in the positioning groove (33), and a mounting bolt (35) is provided on the pressure plate (31), one end of the mounting bolt (35) passes through the pressure plate (31) and is connected to the valve body (1); A sealing gasket (36) is provided on the valve stem (13). A set of sealing gaskets (36) is provided on each side of the limiting plate (34). One end of each set of sealing gaskets (36) is pressed against the limiting plate (34), and the other end is pressed against the pressure plate (31) and the valve body (1) respectively.

2. The modular quick-install ball valve according to claim 1, characterized in that: The valve body (1) has an internal thread (16) on the side near the inlet end (14) and outlet end (15), and the internal thread (16) is used to connect to an external pipeline.

Images