Novel ball valve

Abstract

The utility model provides a novel ball valve which comprises a valve body, a first on-off assembly is arranged on the valve body, a flange at the left end of the valve body is connected with a valve cover, and a normally-opened on-off assembly is arranged on a pipeline at the right end of the valve body. According to the utility model, the normally-opened / closed component is arranged, so that when one of the sealing rings in the first annular groove body or the second annular groove body in the valve body is seriously abraded and needs to be replaced, the sealing gaskets on the two end surfaces of the disc-shaped valve core can be used for respectively blocking the liquid inlet pipe and the channel in the valve channel; the sealing ring can be replaced without cutting off an upper-level valve at the liquid inlet end of the valve, and the replacement is more convenient.

Description

Technical Field

[0001] This utility model relates to a novel ball valve and belongs to the field of valve technology. Background Technology

[0002] Valves are widely used control devices in industry and daily life, mainly used to control the flow of fluids (such as water, gas, oil, etc.). Based on different applications and working principles, valves can be divided into several types: for example, gate valves, used to completely close or open fluid passages, typically used in situations requiring complete fluid cut-off; butterfly valves, which control the direction and flow rate of fluid by rotating a disc (butterfly plate), suitable for high-flow-rate applications; gate valves, which control the on / off state of fluid by raising or lowering a gate, suitable for situations requiring complete fluid cut-off; regulating valves, used for precisely adjusting fluid flow rate, pressure, and temperature, commonly used in systems requiring precise control; and ball valves, which control the on / off state and flow rate of fluid by rotating a ball, offering simple operation and good sealing performance.

[0003] The main structure of a ball valve includes: a housing for accommodating a ball-shaped valve core and a valve stem; a ball-shaped valve core located within the housing that controls the flow of fluid by rotation; a valve stem that controls the rotation of the ball-shaped valve core; and a sealing ring located between the ball and the valve body to ensure valve sealing. The sealing performance of the sealing ring is crucial for ensuring the valve can operate without flow interruption. However, in existing technologies, when the sealing ring in a ball valve is severely worn and needs replacement, the fluid flow to the upstream valve must be cut off, making sealing ring replacement inconvenient. Therefore, this invention proposes a novel ball valve to solve this problem. Utility Model Content

[0004] Based on the above background, the purpose of this utility model is to provide a new type of ball valve to solve the problems in the background art.

[0005] This utility model provides the following technical solution:

[0006] A novel ball valve includes a valve body, on which a first on / off assembly is provided; a valve cover is connected to the flange at the left end of the valve body; and a normally open on / off assembly is provided on the pipe at the right end of the valve body.

[0007] Normally open / closed component: includes a housing, with a chamber inside the housing. A limiting plate is provided within the chamber, dividing the chamber into a movable chamber and a packing chamber. A threaded hole is provided in the center of the limiting plate, through which a lifting rod passes. A disc-shaped valve core is rotatably connected to the bottom of the lifting rod. Sealing gaskets are provided at both ends of the disc-shaped valve core. The lifting rod has a first threaded portion near the disc-shaped valve core and a second threaded portion near the center. Both the first and second threaded portions can be threaded into the threaded hole. A first sealing body is filled inside the packing chamber and is fitted onto the lifting rod. A sealing plate is bolted to the top of the housing. A pressure block is provided at the bottom of the sealing plate, abutting against the top surface of the first sealing body. A frame-shaped sealing gasket is fitted onto the pressure block. A groove is provided on the inner wall of the packing chamber at the top of the housing, and the frame-shaped sealing gasket is located within the groove.

[0008] Preferably, the first on / off assembly includes a ball valve core, which is movably disposed inside the valve body. The valve body has an annular mounting groove at its top, and a second sealing body is filled in the annular mounting groove. A compression sleeve is threaded into the annular mounting groove, and a valve stem is rotatably connected to the compression sleeve and the second sealing body. A plug is provided at the bottom of the valve stem, and a slot is provided at the top of the ball valve core. The plug and the slot are mutually limiting and engaging.

[0009] Preferably, a first annular groove is provided on the right side of the ball valve core inside the valve body, and a second annular groove is provided on the valve cover near the inside of the valve body. Both the first and second annular grooves are provided with sealing rings, and the sealing rings are in contact with the spherical surface of the ball valve core.

[0010] Preferably, a handwheel is provided at the top of the valve stem.

[0011] Preferably, the right end of the housing is provided with a liquid inlet pipe.

[0012] Preferably, the lifting rod is provided with a handle at the top.

[0013] Compared with the prior art, the present invention has the following advantages:

[0014] This utility model discloses a novel ball valve. By setting a normally open on / off component, when one of the sealing rings in the first or second annular groove inside the valve body is severely worn and needs replacement, rotating the handle drives the lifting rod to rotate, causing the first threaded part to lose its threaded connection with the threaded hole. The lifting rod moves downward and rotates on the disc valve core. When the first threaded part completely loses its threaded connection with the threaded hole, pressing the handle down drives the lifting rod downward. When the second threaded part can be threadedly connected with the threaded hole, rotating the handle allows the second threaded part to be threadedly connected with the threaded hole. The disc valve core is coaxial with the valve body's pipe and inlet pipe. The sealing gaskets on both ends of the disc valve core can seal the internal channels of both, making it more convenient to replace the sealing ring without disconnecting the upstream valve at the valve inlet end. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0016] Figure 1 This is a three-dimensional structural schematic diagram of the present invention;

[0017] Figure 2 This is a cross-sectional view of the present invention;

[0018] Figure 3 This is a utility model Figure 2 Enlarged schematic diagram of the structure of section A in the middle.

[0019] In the diagram: 1. Valve body; 2. Valve cover; 3. Housing; 4. Limiting plate; 5. Movable cavity; 6. Packing cavity; 7. Threaded hole; 8. Lifting rod; 9. Disc valve core; 10. Sealing gasket; 11. First threaded section; 12. Second threaded section; 13. First sealing body; 14. Sealing plate; 15. Pressure block; 16. Frame-shaped sealing gasket; 17. Groove; 18. Ball valve core; 19. Annular mounting groove; 20. Second sealing body; 21. Compression sleeve; 22. Valve stem; 23. Insert block; 24. Slot; 25. First annular groove; 26. Second annular groove; 27. Sealing ring; 28. Handwheel; 29. ​​Inlet pipe; 30. Rotary handle. Detailed Implementation

[0020] The technical solution of this utility model will be further described in detail below through specific embodiments and in conjunction with the accompanying drawings. It should be understood that the implementation of this utility model is not limited to the following embodiments, and any modifications and / or alterations made to this utility model will fall within the protection scope of this utility model.

[0021] In this invention, unless otherwise specified, all parts and percentages are by weight, and the equipment and raw materials used are commercially available or commonly used in the field. Unless otherwise specified, the methods in the following embodiments are conventional methods in the field. Unless otherwise specified, the components or equipment in the following embodiments are general standard parts or components known to those skilled in the art, and their structures and principles can be learned by those skilled in the art through technical manuals or conventional experimental methods.

[0022] The embodiments of the present invention will be described in detail below with reference to the accompanying drawings. In the following detailed description, many specific details are set forth to facilitate explanation and provide a comprehensive understanding of the embodiments of the present invention. However, one or more embodiments may be practiced by those skilled in the art without these specific details.

[0023] like Figures 1-3 As shown, a novel ball valve includes a valve body 1, on which a first on / off assembly is provided. A valve cover 2 is connected to the left flange of the valve body 1, and a normally open on / off assembly is provided on the right pipe of the valve body 1. The normally open on / off assembly includes a housing 3, inside which a chamber is formed. A limiting plate 4 is provided within the chamber, dividing the chamber into a movable chamber 5 and a packing chamber 6. A threaded hole 7 is provided in the center of the limiting plate 4, through which a lifting rod 8 passes. A disc valve core 9 is rotatably connected to the bottom of the lifting rod 8. Sealing gaskets 10 are provided at both ends of the disc valve core 9. The lifting rod 8 is positioned near the upper part of the disc valve core 9. The housing 3 has a first threaded portion 11 and a second threaded portion 12 near its center. Both the first threaded portion 11 and the second threaded portion 12 can be threadedly connected to the threaded hole 7. A first sealing body 13 is filled inside the packing cavity 6 and is fitted onto the lifting rod 8. A sealing plate 14 is bolted to the top of the housing 3. A pressure block 15 is provided at the bottom of the sealing plate 14, and the bottom of the pressure block 15 abuts against the top surface of the first sealing body 13. A frame-shaped sealing gasket 16 is fitted onto the pressure block 15. A groove 17 is formed on the inner wall of the packing cavity 6 at the top of the housing 3, and the frame-shaped sealing gasket 16 is located in the groove 17. A liquid inlet pipe 29 is provided at the right end of the housing 3, and a handle 30 is provided at the top of the lifting rod 8.

[0024] In the above technical solution, by setting a normally open on / off component, when one of the sealing rings 27 in the first annular groove 25 or the second annular groove 26 inside the valve body 1 is severely worn and needs to be replaced, the lifting rod 8 is rotated by turning the handle 30, causing the first threaded part 11 to lose its threaded connection with the threaded hole 7. The lifting rod 8 moves downward and rotates on the disc valve core 9. When the first threaded part 11 completely loses its threaded connection with the threaded hole 7, the handle 30 is pressed down, causing the lifting rod 8 to move downward. When the second threaded part 12 can be threadedly connected with the threaded hole 7, the handle 30 is turned to make the second threaded part 12 threadedly connected with the threaded hole 7. The disc valve core 9 is coaxial with the pipe and the inlet pipe 29 of the valve body 1. The sealing gaskets 10 on both ends of the disc valve core 9 can seal the internal channels of both, so that the replacement of the sealing ring 27 can be done without cutting off the valve above the inlet end of the valve, which is more convenient.

[0025] In this utility model, the first on / off assembly includes a ball valve core 18, which is movably disposed inside the valve body 1. The valve body 1 has an annular mounting groove 19 at its top, and a second sealing body 20 is filled in the annular mounting groove 19. A compression sleeve 21 is threaded into the annular mounting groove 19. A valve stem 22 is rotatably connected to the compression sleeve 21 and the second sealing body 20. A plug 23 is provided at the bottom of the valve stem 22. A slot 24 is provided at the top of the ball valve core 18. The plug 23 and the slot 24 are mutually limiting and engaged. A first annular groove 25 is provided on the right side of the ball valve core 18 inside the valve body 1. A second annular groove 26 is provided at one end of the valve cover 2 near the inside of the valve body 1. A sealing ring 27 is provided in both the first annular groove 25 and the second annular groove 26. The sealing ring 27 is in contact with the spherical surface of the ball valve core 18. A handwheel 28 is provided at the top of the valve stem 22.

[0026] In the above technical solution, by setting a valve stem 22, and utilizing the limiting cooperation between the insert block 23 at the bottom of the valve stem 22 and the slot 24 on the ball valve core 18, the ball valve core 18 can be rotated by turning the handwheel 28, which can be used to control the opening and closing of the valve.

[0027] It is worth noting that in this utility model, when the valve does not replace the sealing ring 27, the second threaded part 12 is threadedly connected to the threaded hole 7, and the disc valve core 9 located in the movable cavity 5 near the limiting plate 4 loses its sealing function for the liquid inlet pipe 29 and the valve pipeline.

[0028] This article uses specific examples to illustrate the principles and implementation methods of this utility model. The descriptions of the above embodiments are only for the purpose of helping to understand the method and core ideas of this utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made to this utility model without departing from the principles of this utility model, and these improvements and modifications also fall within the protection scope of the claims of this utility model.

Claims

1. A novel ball valve, characterized in that: Includes a valve body (1), on which a first on / off assembly is provided, a valve cover (2) is connected to the flange at the left end of the valve body (1), and a normally open on / off assembly is provided on the pipe at the right end of the valve body (1). Normally open / closed assembly: includes a housing (3), the housing (3) having a chamber inside, a limiting plate (4) inside the chamber dividing the chamber into a movable chamber (5) and a packing chamber (6), a threaded hole (7) in the center of the limiting plate (4), a lifting rod (8) passing through the threaded hole (7), a disc valve core (9) rotatably connected to the bottom of the lifting rod (8), sealing gaskets (10) at both ends of the disc valve core (9), a first threaded part (11) on the upper part of the lifting rod (8) near the disc valve core (9), and a second threaded part (12) on the upper part of the lifting rod (8) near the middle. The first threaded part (11) and the second threaded part (12) can both be threadedly connected to the threaded hole (7). The first sealing body (13) is filled inside the filling cavity (6). The first sealing body (13) is sleeved on the lifting rod (8). The top of the housing (3) is connected to a sealing plate (14) by bolts. The bottom of the sealing plate (14) is provided with a pressure block (15). The bottom of the pressure block (15) abuts against the top surface of the first sealing body (13). A frame-shaped sealing gasket (16) is sleeved on the pressure block (15). A groove (17) is opened on the inner wall of the filling cavity (6) at the top of the housing (3). The frame-shaped sealing gasket (16) is located in the groove (17).

2. The novel ball valve according to claim 1, characterized in that: The first on / off assembly includes a ball valve core (18), which is movably disposed inside the valve body (1). The valve body (1) has an annular mounting groove (19) at the top, and a second sealing body (20) is filled in the annular mounting groove (19). A compression sleeve (21) is threaded into the annular mounting groove (19). A valve stem (22) is rotatably connected to the compression sleeve (21) and the second sealing body (20). A plug (23) is provided at the bottom of the valve stem (22). A slot (24) is provided at the top of the ball valve core (18), and the plug (23) is in a limiting fit with the slot (24).

3. A novel ball valve according to claim 2, characterized in that: The valve body (1) has a first annular groove (25) on the right side of the ball valve core (18) inside, and the valve cover (2) has a second annular groove (26) at one end near the inside of the valve body (1). Both the first annular groove (25) and the second annular groove (26) are provided with sealing rings (27), and the sealing rings (27) are in contact with the spherical surface of the ball valve core (18).

4. A novel ball valve according to claim 3, characterized in that: The valve stem (22) is provided with a handwheel (28) at the top.

5. A novel ball valve according to claim 1, characterized in that: The right end of the housing (3) is provided with a liquid inlet pipe (29).

6. A novel ball valve according to claim 5, characterized in that: The lifting boom (8) is equipped with a handle (30) at the top.

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