An upper-mounted ball valve with transmission mounting structure

Abstract

The application discloses an upper-mounted ball valve with a transmission mounting structure, which comprises a valve body, a valve cover, a valve ball, a valve rod, valve seats and a transmission mounting structure; the valve seats are two and are arranged at two ends in the valve body respectively, the valve ball is arranged between the two valve seats, the valve cover is covered on the valve body, and the valve rod is connected to the valve ball through the valve cover; the transmission mounting structure comprises a transmission rod and a transmission part, the transmission rod is connected with the valve seat through the transmission part, one end of the transmission rod is arranged at the bottom in the valve body, the other end is arranged at the bottom of the valve cover, the valve seat is driven to move away from or close to the valve ball by rotating the transmission rod through the transmission part, and installation and dismounting of the valve ball are realized. The transmission mounting structure for connecting the valve seat is arranged in the valve body, the valve seat is moved away from or close to the valve ball by rotating the transmission rod of the transmission mounting structure, installation and dismounting of the valve ball are realized, and quick installation and dismounting of inner parts of the valve body are realized; the whole structure is compact, pressure bearing is good, sealing is reliable, and maintenance is convenient.

Description

Technical Field

[0001] This invention relates to the field of valves, and more particularly to a top-mounted ball valve with a transmission mounting structure. Background Technology

[0002] Valves are indispensable fluid control equipment in various sectors of the national economy, including petroleum, chemical, power plants, long-distance pipelines, shipbuilding, nuclear industry, various cryogenic engineering projects, aerospace, and offshore oil extraction. The development and needs of the national oil, natural gas, LNG, and other industries have driven the growth of the valve industry.

[0003] Ball valves are widely used in my country in industries such as petroleum refining, long-distance pipelines, chemicals, papermaking, pharmaceuticals, water conservancy, power, municipal engineering, and steel. Ball valves offer advantages such as wear resistance, good sealing performance, easy operation, long service life, small size, and light weight. Existing ball valves are typically side-mounted, requiring disassembly for maintenance. However, prolonged shutdowns are unacceptable in process pipelines, and side-mounted ball valves present difficulties in disassembly and maintenance. Therefore, current technology uses top-management ball valves to replace traditional side-mounted valves. Top-management ball valves allow for quick maintenance by simply opening the valve cover and removing the internal components. However, the internal components of top-management ball valves are difficult to disassemble and assemble, especially the ball, requiring specialized jigs. This reliance on specialized jigs hinders maintenance. Therefore, it is necessary to design a top-management ball valve with a transmission installation structure that eliminates the need for specialized jigs to disassemble and assemble the internal components. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to provide a top-mounted ball valve with a transmission installation structure, which solves the problem that existing top-mounted ball valves require special ball valve internal parts disassembly and assembly devices for disassembly and assembly, which is not conducive to maintenance.

[0005] The technical solution adopted by the present invention to solve the above-mentioned technical problems is to provide a top-mounted ball valve with a transmission installation structure, including a valve body, a valve cover, a valve ball, a valve stem, a valve seat, and a transmission installation structure; there are two valve seats, which are respectively disposed at both ends of the valve body, and the valve ball is disposed between the two valve seats. The valve cover is fitted onto the valve body, and the valve stem passes through the valve cover and is connected to the valve ball; the transmission installation structure includes a transmission rod and a transmission component. The transmission rod is connected to the valve seat through the transmission component. One end of the transmission rod is disposed at the bottom of the valve body, and the other end is disposed at the bottom of the valve cover. Rotating the transmission rod drives the valve seat to move through the transmission component, disengaging from or approaching the valve ball, thereby realizing the installation and disassembly of the valve ball.

[0006] Furthermore, the transmission mounting structure consists of four sets respectively arranged on both sides of the two valve seats. The transmission component includes a first transmission plate and a second transmission plate that are movably connected. One end of the first transmission plate is fixedly connected to the transmission rod, and the other end is pinned to one end of the second transmission plate by a cylindrical pin. The other end of the second transmission plate is fixed to the valve seat by a screw.

[0007] Furthermore, the transmission rod includes, from bottom to top, a valve body mounting section, a first flat section of the transmission plate, an intermediate section, a second flat section of the transmission plate, and a valve cover mounting section. The transmission rod is connected to the valve body through the valve body mounting section, the transmission rod is connected to the first transmission plate through the first flat section or the second flat section of the transmission plate, and the transmission rod is connected to the valve cover through the valve cover mounting section.

[0008] Furthermore, the valve seat has a fixing groove on its outer periphery that matches the second transmission plate, and the fixing groove has a threaded hole for installing the screw.

[0009] Furthermore, the bottom of the valve body is provided with a first mounting countersunk hole that matches the transmission rod, and the bottom of the valve cover is provided with a second mounting countersunk hole that matches the transmission rod; the first mounting countersunk hole and the second mounting countersunk hole are provided correspondingly.

[0010] Furthermore, valve seat mounting grooves are provided at both ends of the valve body, and gasket grooves and sealing grooves are sequentially provided on the contact surface between the valve seat and the valve seat mounting grooves. A spiral wound gasket is provided in the gasket groove, and a sealing ring is provided in the sealing groove.

[0011] Furthermore, a valve seat mounting hole is provided at the bottom of the valve body, a spring seat is provided on the wall of the valve seat mounting hole, a spring is provided in the spring seat, and the spring abuts against the valve seat.

[0012] Furthermore, a positioning post is provided at the bottom of the valve ball, and a valve ball mounting hole matching the positioning post is provided at the bottom of the valve body. The valve ball is installed by being engaged into the valve ball mounting hole through the positioning post.

[0013] Furthermore, the valve ball has a connecting hole at its top for lifting; the valve stem has a shoulder at its bottom end, and when the valve stem is connected to the valve ball, the shoulder covers the connecting hole.

[0014] Compared with the prior art, the present invention has the following advantages: The top-mounted ball valve with a transmission mounting structure provided by the present invention has a transmission mounting structure connected to the valve seat in the valve body. By rotating the transmission rod of the transmission mounting structure, the valve seat is moved to separate from or approach the valve ball, realizing the installation and disassembly of the valve ball and the rapid installation and disassembly of the valve body components. A spiral wound gasket and a sealing ring are provided on the valve seat to achieve sealing at the connection between the valve seat and the valve body. A spring seat is provided in the valve body, and a spring is provided in the spring seat to abut against the valve seat to compensate for the warning force and ensure the reliability of the seal between the valve seat and the valve body. The overall structure is compact, has good pressure resistance, and reliable sealing. The valve does not require special ball valve internal component disassembly and assembly tools, can be reused repeatedly, and is easy to maintain. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of a top-mounted ball valve (with the valve cover and valve stem removed) with a transmission mounting structure in an embodiment of the present invention;

[0016] Figure 2 This is a cross-sectional view of an upper-mounted ball valve with a transmission mounting structure in an embodiment of the present invention;

[0017] Figure 3 This is a top view of a top-mounted ball valve (with the valve cover and valve stem removed) with a transmission mounting structure in an embodiment of the present invention;

[0018] Figure 4 This is a schematic diagram of the transmission mounting structure in an embodiment of the present invention;

[0019] Figure 5 This is a schematic diagram of the transmission rod in an embodiment of the present invention;

[0020] Figure 6 This is a schematic diagram of the connection between the transmission rod and the valve seat in an embodiment of the present invention.

[0021] Figure 7 This is a schematic diagram showing the installation state of the valve internals in an embodiment of the present invention;

[0022] Figure 8 This is a top view of the valve internals during installation in an embodiment of the present invention;

[0023] Figure 9 This is a schematic diagram of the valve internals in use according to an embodiment of the present invention;

[0024] Figure 10 This is a top view of the valve internals in use according to an embodiment of the present invention.

[0025] In the picture:

[0026] 1. Valve body; 2. Valve seat; 3. Valve ball; 4. Spring; 5. Spring seat; 6. Sealing ring; 7. Spiral wound gasket; 8. Valve cover; 9. Transmission mounting structure; 11. Valve stem; 12. Transmission rod; 13. First transmission plate; 14. Second transmission plate; 15. Cylindrical pin; 16. Screw; 21. Fixing groove; 22. Gasket groove; 23. Sealing groove; 31. Connecting hole; 81. Second mounting countersunk hole; 100. Valve seat mounting groove; 101. First mounting countersunk hole; e1. Valve body mounting section; e2. First flat section of transmission plate; e3. Intermediate section; e4. Second flat section of transmission plate; e5. Valve cover mounting section. Detailed Implementation

[0027] The present invention will now be further described with reference to the accompanying drawings and embodiments.

[0028] Figure 1 This is a schematic diagram of the structure of a top-mounted ball valve (with the valve cover and valve stem removed) with a transmission mounting structure in an embodiment of the present invention; Figure 2 This is a cross-sectional view of an upper-mounted ball valve with a transmission mounting structure in an embodiment of the present invention; Figure 3 This is a top view of a top-mounted ball valve (with the valve cover and valve stem removed) with a transmission mounting structure according to an embodiment of the present invention.

[0029] Please see Figures 1-3 The top-mounted ball valve with a transmission mounting structure according to an embodiment of the present invention includes a valve body 1, a valve cover 8, a valve ball 3, a valve stem 11, a valve seat 2, and a transmission mounting structure 9. There are two valve seats 2, each located at one end of the valve body 1. The valve ball 3 is located between the two valve seats 2. The valve cover 8 is fitted onto the valve body 1. The valve stem 11 passes through the valve cover 8 and connects to the valve ball 3. The transmission mounting structure 9 includes a transmission rod 12 and a transmission component. The transmission rod 12 is connected to the valve seat 2 via the transmission component. One end of the transmission rod 12 is located at the bottom of the valve body 1, and the other end is located at the bottom of the valve cover 8. Rotating the transmission rod 12 drives the valve seat 2 to move, disengaging from or approaching the valve ball 3, thereby enabling the installation and disassembly of the valve ball 3. This facilitates the rapid assembly and disassembly of the valve's internal components.

[0030] Specifically, the bottom of the valve body 1 is provided with a first mounting countersunk hole 101 that matches the transmission rod 12, and the bottom of the valve cover 8 is provided with a second mounting countersunk hole 81 that matches the transmission rod 12; the first mounting countersunk hole 101 and the second mounting countersunk hole 81 are provided correspondingly.

[0031] Specifically, a valve seat mounting hole is provided at the bottom of the valve body 1, and a spring seat 5 is provided on the wall of the valve seat mounting hole. A spring 4 is provided in the spring seat 5, and the spring 4 abuts against the valve seat 2. The spring 4 is used to compensate for the warning force and ensure the reliability of the seal.

[0032] Specifically, the valve ball 3 is provided with a positioning post at its bottom, and the valve body 1 is provided with a valve ball mounting hole at its bottom that matches the positioning post. The valve ball is installed by being inserted into the valve ball mounting hole through the positioning post.

[0033] Please see Figure 4 The top-mounted ball valve with a transmission mounting structure according to the present invention has four sets of transmission mounting structures 9 respectively arranged on both sides of the two valve seats 2. The transmission components include a first transmission plate 13 and a second transmission plate 14 that are movably connected. One end of the first transmission plate 13 is fixedly connected to the transmission rod 12, and the other end is pinned to one end of the second transmission plate 14 by a cylindrical pin 15. The other end of the second transmission plate 14 is fixed to the valve seat 2 by a screw 16.

[0034] Please see Figure 5 The top-mounted ball valve with a transmission mounting structure according to this embodiment of the invention includes a transmission rod 12 comprising, from bottom to top, a valve body mounting section e1, a first flat section e2 of the transmission plate, an intermediate section e3, a second flat section e4 of the transmission plate, and a valve cover mounting section e5. The transmission rod 12 is connected to the valve body 1 through the valve body mounting section e1, and to the first transmission plate 13 through either the first flat section e2 or the second flat section e4. The transmission rod 12 is connected to the valve cover 8 through the valve cover mounting section e5. The length of e4 is greater than the length of e2, facilitating the rotation of the transmission rod 12.

[0035] Please see Figure 6 In the embodiment of the present invention, the top-mounted ball valve with a transmission installation structure has a fixing groove 21 on the outer periphery of the valve seat 2 that matches the second transmission plate 14, and the fixing groove 21 has a threaded hole for mounting screws 16.

[0036] Specifically, valve body 1 has valve seat mounting grooves 100 at both ends. Valve seat 2 has gasket grooves 22 and sealing grooves 23 sequentially arranged on its contact surface with the valve seat mounting grooves 100. A spiral wound gasket 7 is installed in the gasket groove 22, and a sealing ring 6 is installed in the sealing groove 23. The spiral wound gasket 7 serves a fireproof function, and the sealing ring 6 seals the connection between the valve seat 2 and the valve body 1.

[0037] Preferably, the top of the valve ball 3 is provided with a connection hole 31 for lifting; the bottom end of the valve stem 11 is provided with a shoulder, and when the valve stem 11 is connected to the valve ball 3, the shoulder covers the connection hole 31 for protection.

[0038] Please also see Figures 7-10In this embodiment of the invention, the top-mounted ball valve with a transmission installation structure is installed as follows: First, a spring seat 5 is installed in the valve seat mounting hole, and a spring 4 is installed in the spring seat 5. The sealing ring 6 and the spiral wound gasket 7 are then installed on the valve seat 2. Next, the transmission installation structure 9 is installed on the valve seat 2. Then, the valve seat 2 is installed into the valve body 1. By applying external force to rotate the transmission rod 12, the transmission plate is driven, and the transmission plate drives the valve seat 2, causing the valve seat 2 to move into the valve body 1. Then, the valve ball 3 is installed into the valve body 1 through the connecting hole 31. By applying external force to rotate the transmission rod 12, the transmission plate is driven, and the transmission plate drives the valve seat 2, causing the valve seat 2 to move towards the valve ball 3. Finally, the valve stem 11 and the valve cover 8 are installed to complete the installation of the valve internals. When disassembling the valve internals, first remove the valve stem 11 and valve cover 8. Then, by applying external force to rotate the transmission rod 12, the transmission plate is driven, and the transmission plate drives the valve seat 2, causing the valve seat 2 to move into the valve body 1. Then, the valve ball 3 is lifted out of the valve body 1 through the connecting hole 31. Finally, the valve seat 2 and the transmission mounting structure 9 are disassembled to achieve the disassembly of the valve internals.

[0039] When disassembling and assembling the internal components of the ball valve, the opening between the two valve seats 2 is d2, and the length of the ball 3 is d1, where d2 > d1. When the ball valve is in use, the opening between the two valve seats 2 is d2', and the length of the ball 3 remains d1, where d2' < d1. The difference between d2 and d2', Δf2, should be less than the maximum compression of the spring 4, Δf1.

[0040] In summary, the top-mounted ball valve with a transmission mounting structure of this invention has a transmission mounting structure 9 connected to the valve seat 2 inside the valve body 1. By rotating the transmission rod 12 of the transmission mounting structure 9, the valve seat 2 can be moved to disengage from or approach the valve ball 3, thereby realizing the installation and disassembly of the valve ball 3 and achieving rapid installation and disassembly of the valve body components. A spiral wound gasket 7 and a sealing ring 6 are provided on the valve seat 2 to achieve sealing at the connection between the valve seat 2 and the valve body 1. A spring seat 5 is provided in the valve body 1, and a spring 4 is provided in the spring seat 5 to abut against the valve seat 2 to compensate for the warning force and ensure the reliability of the seal between the valve seat 2 and the valve body 1. The overall structure is compact, has good pressure resistance, and reliable sealing. The valve does not require special ball valve internal component disassembly and assembly tools, can be reused repeatedly, and is easy to maintain.

[0041] Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make some modifications and improvements without departing from the spirit and scope of the present invention. Therefore, the scope of protection of the present invention shall be defined by the claims.

Claims

1. A top-mounted ball valve with a transmission mounting structure, characterized in that, The valve includes a valve body, a valve cover, a valve ball, a valve stem, a valve seat, and a transmission and mounting structure. There are two valve seats, each located at one end of the valve body. The valve ball is positioned between the two valve seats. The valve cover is fitted onto the valve body, and the valve stem passes through the valve cover and connects to the valve ball. The transmission and mounting structure includes a transmission rod and a transmission component. The transmission rod is connected to the valve seat via the transmission component. One end of the transmission rod is located at the bottom of the valve body, and the other end is located at the bottom of the valve cover. Rotating the transmission rod causes the valve seat to move, disengaging from or approaching the valve ball, thus enabling the installation and removal of the valve ball. The transmission mounting structure consists of four sets respectively arranged on both sides of the two valve seats. The transmission component includes a first transmission plate and a second transmission plate that are movably connected. One end of the first transmission plate is fixedly connected to the transmission rod, and the other end is pinned to one end of the second transmission plate by a cylindrical pin. The other end of the second transmission plate is fixed to the valve seat by screws. The transmission rod includes, from bottom to top, a valve body mounting section, a first flat section of the transmission plate, an intermediate section, a second flat section of the transmission plate, and a valve cover mounting section. The transmission rod is connected to the valve body through the valve body mounting section, the transmission rod is connected to the first transmission plate through the first flat section or the second flat section of the transmission plate, and the transmission rod is connected to the valve cover through the valve cover mounting section. The valve seat has a fixing groove on its outer periphery that matches the second transmission plate, and the fixing groove has a threaded hole for installing the screw.

2. The top-mounted ball valve with a transmission mounting structure as described in claim 1, characterized in that, The bottom of the valve body is provided with a first mounting countersunk hole that matches the transmission rod, and the bottom of the valve cover is provided with a second mounting countersunk hole that matches the transmission rod; the first mounting countersunk hole and the second mounting countersunk hole are provided correspondingly.

3. The top-mounted ball valve with a transmission mounting structure as described in claim 1, characterized in that, The valve body has valve seat mounting grooves at both ends. Gasket grooves and sealing grooves are arranged sequentially on the contact surface between the valve seat and the valve seat mounting grooves. A spiral wound gasket is arranged in the gasket groove, and a sealing ring is arranged in the sealing groove.

4. The top-mounted ball valve with a transmission mounting structure as described in claim 1, characterized in that, The bottom of the valve body is provided with a valve seat mounting hole, the wall of the valve seat mounting hole is provided with a spring seat, the spring seat is provided with a spring, and the spring abuts against the valve seat.

5. The top-mounted ball valve with a transmission mounting structure as described in claim 1, characterized in that, The valve ball is provided with a positioning post at its bottom, and the valve body is provided with a valve ball mounting hole at its bottom that matches the positioning post. The valve ball is installed by being inserted into the valve ball mounting hole through the positioning post.

6. The top-mounted ball valve with a transmission mounting structure as described in claim 1, characterized in that, The valve ball has a connection hole at its top for lifting; the valve stem has a shoulder at its bottom end, and when the valve stem is connected to the valve ball, the shoulder covers the connection hole.

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