Pneumatic control ball valve for gas-liquid multiphase flow media and its operating process

Abstract

This invention belongs to the field of pneumatic control ball valves, particularly pneumatic control ball valves for gas-liquid multiphase flow media and their operating process. Addressing the problem of inconvenient maintenance and cleaning of existing pneumatic control ball valves for gas-liquid multiphase flow media, the following solution is proposed: It includes a power unit for power output, a valve stem for transmission, and a valve for sealing. The output end of the power unit is fixedly connected to the top of the valve stem, and the bottom of the valve stem is detachably connected to the top of the valve. Valve bodies are provided on both sides of the valve surface. The left valve body is fixedly connected to the surface of the power unit, and the left side of the right valve body contacts the surface of the left valve body. This invention solves the problem of inconvenient maintenance and cleaning of existing pneumatic control ball valves for gas-liquid multiphase flow media by incorporating a power unit, valve stem, valve, valve body, positioning structure, connecting flange, sealing plate, and limiting structure.

Description

Technical Field

[0001] This invention relates to the field of pneumatic control ball valve technology, and in particular to a pneumatic control ball valve for gas-liquid multiphase flow media and its operating process. Background Technology

[0002] A gas multiphase flow medium gas control ball valve is a ball valve capable of controlling the mixed flow of gas and liquid. It can control the flow rate of gas or liquid through a gas device and features rapid response and precise control. This type of ball valve is widely used in fluid control systems in chemical, petroleum, natural gas, and metallurgical industries, enabling functions such as fluid regulation, shut-off, and reverse flow.

[0003] A patent application (application number 202210457834.X) discloses a leak-proof gate valve with a double-isolation valve plate. This invention belongs to the field of gate valve technology, specifically a leak-proof gate valve with a double-isolation valve plate. Existing gate valves typically rely on manual operation to determine if the valve is fully closed during the closing process. However, this sensory method is inaccurate. Rust on the threads or impurities within the valve body can lead to incomplete closure and leakage. The proposed solution includes an integrally formed valve body with a through-flow fluid channel. Connection ports on both sides of the valve body connect to external pipes and communicate with the fluid channel. A lower valve seat, communicating with the fluid channel, is fixedly installed on the top of the valve body, and an upper valve seat is fixedly installed on top of the lower valve seat. This invention effectively improves the sealing performance of existing gate valves and provides a reminder of whether the valve is fully closed, preventing leakage even with incomplete closure.

[0004] When using gas control ball valves for multiphase gas flow media, the following problems may occur: Damage to the ball valve sealing surface or loosening of the guide valve necessitates inspection and replacement of the seals. In multiphase flow media, solid particles or other impurities may cause blockage of the ball valve, requiring cleaning or repair. In some special environments, the ball valve may corrode, requiring the use of special materials or regular maintenance. Solving these problems mainly involves ball valve repair, component replacement, cleaning, and material replacement. However, disassembling and repairing the ball valve requires complete disassembly and removal of materials from the pipeline, which is slow and results in continuous overflow. Therefore, a convenient method for rapid repair and replacement of pneumatic control ball valves for multiphase gas-liquid flow media is needed. Summary of the Invention

[0005] The purpose of this invention is to address the shortcomings of existing gas-liquid multiphase flow medium pneumatic control ball valves, which are inconvenient to maintain and clean during use, and to propose a gas-liquid multiphase flow medium pneumatic control ball valve and its operating process.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A pneumatic control ball valve for gas-liquid multiphase flow media and its operating process, including a power unit for power output, a valve stem for transmission, and a valve for sealing, wherein the output end of the power unit is fixedly connected to the top of the valve stem, and the bottom of the valve stem is detachably connected to the top of the valve.

[0008] A valve body is provided on both sides of the valve surface. The valve body on the left side is fixedly connected to the surface of the power device, and the left side of the valve body on the right side is in contact with the surface of the valve body on the left side, and the valve body on the right side is movably connected to the surface of the power device.

[0009] The bottom of the valve is detachably connected to a positioning structure, the bottom of which penetrates through both valve bodies and extends to the bottom of the valve body;

[0010] Both valve bodies are fixedly connected to a connecting flange on opposite sides. A sealing plate is provided inside the connecting flange on the left side. The top of the sealing plate passes through the connecting flange and extends to the top of the connecting flange.

[0011] The top of the sealing plate is fixedly connected to a limiting structure for limiting the position of the sealing plate.

[0012] Preferably, the positioning structure includes a connecting column communicating with the valve body. The surface of the connecting column is fixedly connected to the interior of the valve body on the left side, and the surface of the connecting column is detachably connected to the interior of the valve body on the right side. A positioning column for valve positioning is provided at the top inside the connecting column. The top of the positioning column passes through the connecting column and extends into the interior of the valve. A screw is movably connected to the bottom of the positioning column. A threaded sleeve for screw lifting is threadedly connected to the surface of the screw. The surface of the threaded sleeve is threadedly connected to the inner wall of the connecting column.

[0013] Preferably, the limiting structure includes a lifting plate for lifting the sealing plate, and guide posts for guiding the lifting plate are fixedly connected to the front and rear sides of the bottom of the lifting plate. Guide blocks for limiting the guide posts are movably connected to the surface of the guide posts, and the side of the guide block near the left connecting flange is fixedly connected to the surface of the connecting flange.

[0014] Preferably, a sealing gasket for sealing is fitted on the surface of the positioning post, the surface of the sealing gasket is used to cooperate with the top of the inner wall of the connecting post, and a bearing is fixedly connected to the top of the screw surface, the top of the bearing is fixedly connected to the bottom of the positioning post.

[0015] Preferably, the bottom of the screw is fixedly connected to a handle for rotating the screw, and the surface of the handle is fixedly connected to an assist rod for assisting the rotation of the handle. The number of the assist rods is four, and they are evenly distributed on the surface of the handle.

[0016] Preferably, the screw has a hexagonal block threadedly connected to its surface, the top of the hexagonal block being fixedly connected to the bottom of the threaded sleeve, and the top of the hexagonal block being in contact with the bottom of the connecting post.

[0017] Preferably, the guide block has a limiting post inside for limiting the guide post, one side of the limiting post extends through to the surface of the guide block, and the surface of the limiting post has a groove for cooperating with the guide post.

[0018] Preferably, one end of the limiting post is threaded, the inside of the guide block is provided with a moving groove for the movement of the limiting post, and the surface of the limiting post is threadedly connected with an abutment sleeve, the surface of the abutment sleeve and the surface of the guide block are used in conjunction.

[0019] Preferably, the bottom of the guide post is fixedly connected to a fixing block for preventing detachment, the surface of the fixing block is used in conjunction with the surface of the guide block, and the top of the lifting plate is fixedly connected to a handle for lifting the lifting plate.

[0020] Preferably, the operating process includes the following steps:

[0021] Step S1: Blocking and interrupting flow, by inserting the sealing plate into the inside of the connecting flange, the connecting flange on one side is sealed.

[0022] Step S2: Disassembly and maintenance. Remove the valve body on the right side from the valve body on the left side to expose the valve.

[0023] Step S3: Valve disassembly and repair. By opening the positioning structure, the positioning structure is separated from the valve, and the valve is replaced and repaired.

[0024] Step S4: Combine and install the new or repaired valve inside the valve body. By combining the two valve bodies, a quick installation can be achieved.

[0025] Beneficial effects

[0026] 1. In this invention, by setting up a power unit, valve stem, valve, valve body, positioning structure, connecting flange, sealing plate, and limiting structure, the power unit can provide power support. When the valve inside the valve body has poor sealing or needs to be disassembled and repaired, one side of the valve body can be disassembled first for internal repair and replacement. The positioning structure allows for quick installation and disassembly of the valve, achieving the purpose of rapid cleaning. At the same time, the limiting structure can fix and limit the sealing plate, so that the sealing plate seals the connecting flange, preventing material leakage. This solves the problem of inconvenient maintenance and cleaning of pneumatic control ball valves for gas-liquid multiphase flow media in the prior art.

[0027] 2. In this invention, by setting a positioning structure, the valve body can be connected through the connecting column. The screw sleeve is screwed into the interior of the connecting column to achieve the purpose of connecting the screw sleeve and the connecting column. At the same time, rotating the screw causes the positioning column to be driven into the interior of the valve to achieve the purpose of fixing the valve. When the valve needs to be replaced, the positioning column is removed from the valve to achieve the purpose of quick disassembly of the valve.

[0028] 3. In this invention, by setting a limiting structure, the sealing plate can be moved downward, which in turn drives the lifting plate to move downward, and the lifting plate drives the guide post to move downward, so that the guide post moves inside the guide block. The guide block can guide the guide post, the lifting plate and the sealing plate to move up and down, so as to achieve the purpose of stable sealing.

[0029] 4. In this invention, by setting a sealing gasket and a bearing, the sealing gasket can be fitted on the surface of the positioning post, which can increase the sealing between the positioning post and the connecting post. The bearing can facilitate the screw to drive the positioning post to move up and down, and at the same time, the bearing can limit the screw and prevent the structure from jamming.

[0030] 5. In this invention, by setting a handle and an assist rod, the torque can be increased by rotating the assist rod. The assist rod drives the handle to rotate, and the handle drives the screw to rotate, which facilitates the assistance of the structure.

[0031] 6. In this invention, by setting a hexagonal block, the hexagonal block can be rotated to drive the threaded sleeve to rotate. At the same time, the hexagonal block can limit the position of the threaded sleeve screwed into the connecting post. Meanwhile, the hexagonal block is in close contact with the connecting post, which can stably fix the position of the threaded sleeve.

[0032] 7. In this invention, by setting a limiting post, the limiting post can be moved to lock onto the surface of the guide post, thereby limiting and fixing the position of the guide post.

[0033] 8. In this invention, by setting a movable groove and an abutting sleeve, the movement of the limiting post can be facilitated. The abutting sleeve can rotate on the surface of the limiting post and abut against the surface of the guide block to achieve the purpose of moving the position of the limiting post, so that the limiting post is more stably stuck on the surface of the guide post.

[0034] 9. In this invention, by setting a fixing block and a handle, the guide column can be limited to prevent it from detaching from the inside of the guide block and to prevent the structure from jamming. The handle can facilitate the lifting of the lifting plate. Attached Figure Description

[0035] Figure 1 This is a three-dimensional structural schematic diagram of the pneumatic control ball valve for gas-liquid multiphase flow media and its operating process proposed in this invention.

[0036] Figure 2 This is a right-side structural schematic diagram of the pneumatic control ball valve for gas-liquid multiphase flow media and its operating process proposed in this invention.

[0037] Figure 3 The present invention relates to a pneumatically controlled ball valve for gas-liquid multiphase flow media and its operating process. Figure 2 Schematic diagram of the three-dimensional structure in cross-section of the AA section;

[0038] Figure 4 This is a three-dimensional structural diagram of the pneumatic control ball valve for gas-liquid multiphase flow media and the power removal device for its operation process proposed in this invention.

[0039] Figure 5 This is a front view schematic diagram of the valve body structure of the pneumatic control ball valve for gas-liquid multiphase flow medium and its operation process proposed in this invention.

[0040] Figure 6 The present invention relates to a pneumatically controlled ball valve for gas-liquid multiphase flow media and its operating process. Figure 5 Schematic diagram of the three-dimensional structure of the middle BB section;

[0041] Figure 7 The present invention relates to a pneumatically controlled ball valve for gas-liquid multiphase flow media and its operating process. Figure 3 Enlarged structural diagram of part A in the middle;

[0042] Figure 8 The present invention relates to a pneumatically controlled ball valve for gas-liquid multiphase flow media and its operating process. Figure 6 A magnified structural diagram of part B in the middle.

[0043] In the diagram: 1. Power unit; 2. Valve stem; 3. Valve; 4. Valve body; 5. Connecting flange; 6. Sealing plate; 7. Connecting column; 8. Positioning column; 9. Screw; 10. Screw sleeve; 11. Lifting plate; 12. Guide column; 13. Guide block; 14. Sealing gasket; 15. Bearing; 16. Handle; 17. Auxiliary rod; 18. Hexagonal block; 19. Limiting column; 20. Moving groove; 21. Abutment sleeve; 22. Fixing block; 23. Handle. Detailed Implementation

[0044] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0045] Example 1

[0046] Reference Figure 1-8 A pneumatic control ball valve for gas-liquid multiphase flow media and its operating process, including a power unit 1 for power output, a valve stem 2 for transmission and a valve 3 for sealing, wherein the output end of the power unit 1 is fixedly connected to the top of the valve stem 2 and the bottom of the valve stem 2 is detachably connected to the top of the valve 3.

[0047] Valve bodies 4 are provided on both sides of the surface of valve 3. The left valve body 4 is fixedly connected to the surface of power device 1, and the left side of the right valve body 4 is in contact with the surface of the left valve body 4, and the right valve body 4 is movably connected to the surface of power device 1.

[0048] A positioning structure is detachably connected to the bottom of valve 3. The bottom of the positioning structure passes through both valve bodies 4 and extends to the bottom of valve body 4.

[0049] Two valve bodies 4 are fixedly connected to each other on opposite sides by a connecting flange 5. A sealing plate 6 is provided inside the left connecting flange 5. The top of the sealing plate 6 passes through the connecting flange 5 and extends to the top of the connecting flange 5.

[0050] The top of the sealing plate 6 is fixedly connected with a limiting structure for limiting the position of the sealing plate 6.

[0051] Example 2

[0052] An improvement upon Embodiment 1: It includes a power unit 1 for power output, a valve stem 2 for transmission, and a valve 3 for sealing. The output end of the power unit 1 is fixedly connected to the top of the valve stem 2, and the bottom of the valve stem 2 is detachably connected to the top of the valve 3. Valve bodies 4 are provided on both sides of the valve 3 surface. The left valve body 4 is fixedly connected to the surface of the power unit 1, and the left side of the right valve body 4 contacts the surface of the left valve body 4, while the right valve body 4 is movably connected to the surface of the power unit 1. A positioning structure is detachably connected to the bottom of the valve 3. The bottom of the positioning structure penetrates both valve bodies 4 and extends to the bottom of the valve bodies 4. The positioning structure includes a connecting post 7 communicating with the valve bodies 4. The surface of the connecting post 7 is fixedly connected to the interior of the left valve body 4. The valve body 3 is detachably connected to the interior of the right valve body 4. A positioning pin 8 for positioning the valve 3 is located at the top inside the connecting column 7. The top of the positioning pin 8 penetrates the connecting column 7 and extends into the interior of the valve 3. A screw 9 is movably connected to the bottom of the positioning pin 8. A threaded sleeve 10 for raising and lowering the screw 9 is threaded onto the surface of the screw 9. The surface of the threaded sleeve 10 is threaded onto the inner wall of the connecting column 7, allowing connection between the connecting column 7 and the valve body 4. Screwing the threaded sleeve 10 into the connecting column 7 achieves the connection between the threaded sleeve 10 and the connecting column 7. Simultaneously rotating the screw 9 causes the positioning pin 8 to engage inside the valve 3, thus securing the valve 3. When the valve 3 needs to be replaced, the positioning pin 8 is disengaged from the valve 3, thus securing the valve 3. For quick disassembly, a sealing washer 14 is fitted onto the surface of the positioning post 8 for sealing. The surface of the sealing washer 14 mates with the top of the inner wall of the connecting post 7. A bearing 15 is fixedly connected to the top of the surface of the screw 9. The top of the bearing 15 is fixedly connected to the bottom of the positioning post 8. The sealing washer 14 fitted onto the surface of the positioning post 8 increases the sealing between the positioning post 8 and the connecting post 7. The bearing 15 facilitates the screw 9 to move the positioning post 8 up and down, and at the same time, the bearing 15 can limit the movement of the screw 9 to prevent the structure from jamming. A handle 16 for rotating the screw 9 is fixedly connected to the bottom of the screw 9. Four assist rods 17 are fixedly connected to the surface of the handle 16 to assist the rotation of the handle 16. The screw rod 16 is evenly distributed on its surface and can increase torque by rotating the assist rod 17. The assist rod 17 drives the screw rod 16 to rotate, which in turn drives the screw rod 9 to rotate, facilitating structural assistance. The screw rod 9 has a hexagonal block 18 threadedly connected to its surface. The top of the hexagonal block 18 is fixedly connected to the bottom of the threaded sleeve 10, and the top of the hexagonal block 18 is in contact with the bottom of the connecting post 7. By rotating the hexagonal block 18, the threaded sleeve 10 can be rotated. At the same time, the hexagonal block 18 can limit the position of the threaded sleeve 10 when it is screwed into the connecting post 7. The hexagonal block 18 is in close contact with the connecting post 7, which can stably fix the position of the threaded sleeve 10. The two valve bodies 4 are fixedly connected to the opposite sides of each other by a connecting flange 5.A sealing plate 6 is provided inside the left connecting flange 5. The top of the sealing plate 6 penetrates through the connecting flange 5 and extends to the top of the connecting flange 5. A limiting structure for limiting the sealing plate 6 is fixedly connected to the top of the sealing plate 6. The limiting structure includes a lifting plate 11 for lifting the sealing plate 6. Guide posts 12 for guiding the lifting plate 11 are fixedly connected to the front and rear sides of the bottom of the lifting plate 11. A guide block 13 for limiting the guide post 12 is movably connected to the surface of the guide post 12. The side of the guide block 13 closest to the left connecting flange 5 is connected to the connecting flange 5. The surface is fixedly connected, and by moving the sealing plate 6 downward, the sealing plate 6 drives the lifting plate 11 downward, and the lifting plate 11 drives the guide post 12 downward, so that the guide post 12 can move inside the guide block 13. The guide block 13 can guide the guide post 12, the lifting plate 11 and the sealing plate 6 to move up and down, so as to achieve a stable seal. The guide block 13 is provided with a limiting post 19 for limiting the guide post 12. One side of the limiting post 19 extends through the surface of the guide block 13, and the surface of the limiting post 19 has a groove that connects with the guide post 12. The groove used in conjunction with the guide block 13 allows the movable limiting post 19 to be engaged with the surface of the guide post 12, thus limiting and fixing the position of the guide post 12. One end of the limiting post 19 is threaded, and the guide block 13 has a moving groove 20 inside for the movement of the limiting post 19. The surface of the limiting post 19 is threadedly connected to a retaining sleeve 21, which engages with the surface of the guide block 13 to facilitate the movement of the limiting post 19. The retaining sleeve 21 can be rotated on the surface of the limiting post 19, thereby abutting against the guide post 12. The guide block 13 is positioned on the surface of the guide block 13 to move the limiting post 19, making it more stable when locked onto the guide post 12. A fixing block 22 for preventing detachment is fixedly connected to the bottom of the guide post 12. The surface of the fixing block 22 cooperates with the surface of the guide block 13. A handle 23 for lifting the lifting plate 11 is fixedly connected to the top of the lifting plate 11. This handle limits the guide post 12, preventing it from detaching from the guide block 13 and causing structural jamming. The handle 23 facilitates the lifting of the lifting plate 11.

[0053] However, as is well known to those skilled in the art, the working principle and wiring method of the power unit 1 are commonplace and are all conventional means or common knowledge, so they will not be described in detail here. Those skilled in the art can make any selections according to their needs or convenience.

[0054] In this invention, during prolonged use, impurities may accumulate inside the valve body 4, causing blockages. When cleaning or repair / replacement of the internal structure is required, the valve body 4 needs to be disassembled. The first step is to block and shut off the flow inside the connecting flange 5. By moving the lifting plate 11 downwards, the lifting plate 11 moves the sealing plate 6 downwards, causing the sealing plate 6 to engage within the connecting flange 5, thus sealing the connecting flange 5. Simultaneously, the lifting plate 11 moves the guide column 12 downwards. The guide column 12 moves within the guide block 13, and the guide block 13... 12 guides the movement of the guide post 12 by screwing the abutment sleeve 21 onto the surface of the limiting post 19. The abutment sleeve 21 abuts against the surface of the guide block 13. Due to the mutual action of forces, the abutment sleeve 21 drives the limiting post 19 to move, fixing the limiting post 19 onto the surface of the guide post 12, thus achieving the purpose of limiting and fixing the guide post 12. This ensures the stable sealing of the sealing plate 6 against the connecting flange 5. The valve body 4 on the right side is then removed from the valve body 4 on the left side. By reversing the assist rod 17, the assist rod 17 drives the handle 16 to rotate, which in turn drives the screw 9 to rotate in reverse. With the engagement of screw 9 and sleeve 10, screw 9 drives positioning pin 8 downward via bearing 15. When positioning pin 8 disengages from the interior of valve 3, valve 3 is removed for maintenance and cleaning of the valve body 4. After cleaning, valve 3 is reinstalled in valve body 4. Rotating assist rod 17 forward causes handle 16 to rotate, which in turn drives screw 9 to rotate forward. Due to the engagement of screw 9 and sleeve 10, screw 9 drives positioning pin 8 upward via bearing 15, causing positioning pin 8 to engage with the interior of valve 3, thus securing valve 3. The purpose of the limiting and fixing is that when the positioning post 8 needs to be replaced, by reversing the hexagonal block 18, the hexagonal block 18 will drive the threaded sleeve 10 to rotate, causing the threaded sleeve 10 to disengage from the interior of the connecting post 7, thus achieving the purpose of disassembly. The new positioning post 8 is then inserted into the interior of the connecting post 7. By rotating the hexagonal block 18 clockwise, the hexagonal block 18 will drive the threaded sleeve 10 to rotate. At the same time, the hexagonal block 18 can limit the position of the threaded sleeve 10 when it is screwed into the interior of the connecting post 7. Meanwhile, the hexagonal block 18 is in close contact with the connecting post 7, which can stably fix the position of the threaded sleeve 10, thus achieving the purpose of quickly cleaning and maintaining the interior of the valve 3.

[0055] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. Aerodynamic control ball valve of gas-liquid multiphase flow medium, comprising a power device (1) for power output, a valve stem (2) for transmission and a valve (3) for sealing, characterized in that, The output end of the power unit (1) is fixedly connected to the top of the valve stem (2), and the bottom of the valve stem (2) is detachably connected to the top of the valve (3). Both sides of the surface of the valve (3) are provided with valve bodies (4). The valve body (4) on the left side is fixedly connected to the surface of the power device (1). The left side of the valve body (4) on the right side is in contact with the surface of the valve body (4) on the left side, and the valve body (4) on the right side is movably connected to the surface of the power device (1). The bottom of the valve (3) is detachably connected to a positioning structure, the bottom of which penetrates through the two valve bodies (4) and extends to the bottom of the valve body (4); Both valve bodies (4) are fixedly connected to a connecting flange (5) on opposite sides. A sealing plate (6) is provided inside the connecting flange (5) on the left side. The top of the sealing plate (6) passes through the connecting flange (5) and extends to the top of the connecting flange (5). The top of the sealing plate (6) is fixedly connected with a limiting structure for limiting the sealing plate (6); The positioning structure includes a connecting column (7) that communicates with the valve body (4). The surface of the connecting column (7) is fixedly connected to the interior of the valve body (4) on the left side. The surface of the connecting column (7) is detachably connected to the interior of the valve body (4) on the right side. A positioning column (8) for positioning the valve (3) is provided at the top of the interior of the connecting column (7). The top of the positioning column (8) passes through the connecting column (7) and extends into the interior of the valve (3). A screw (9) is movably connected to the bottom of the positioning column (8). A screw sleeve (10) for lifting the screw (9) is threadedly connected to the surface of the screw (9). The surface of the screw sleeve (10) is threadedly connected to the inner wall of the connecting column (7). The limiting structure includes a lifting plate (11) for lifting the sealing plate (6). The front and rear sides of the bottom of the lifting plate (11) are fixedly connected to guide posts (12) for guiding the lifting plate (11). The surface of the guide post (12) is movably connected to a guide block (13) for limiting the guide post (12). The guide block (13) is fixedly connected to the surface of the connecting flange (5) on the side near the left side of the connecting flange (5).

2. The gas-liquid multiphase flow medium pneumatically controlled globe valve according to claim 1, characterized in that, The surface of the positioning post (8) is fitted with a sealing gasket (14) for sealing. The surface of the sealing gasket (14) is used in conjunction with the top of the inner wall of the connecting post (7). The top of the surface of the screw (9) is fixedly connected with a bearing (15). The top of the bearing (15) is fixedly connected to the bottom of the positioning post (8).

3. The pneumatic control ball valve for gas-liquid multiphase flow media according to claim 1, characterized in that, The bottom of the screw (9) is fixedly connected to a handle (16) for rotating the screw (9), and the surface of the handle (16) is fixedly connected to an assist rod (17) for assisting the handle (16). There are four assist rods (17), which are evenly distributed on the surface of the handle (16).

4. The pneumatic control ball valve for gas-liquid multiphase flow media according to claim 1, characterized in that, The screw (9) has a hexagonal block (18) threadedly connected to its surface. The top of the hexagonal block (18) is fixedly connected to the bottom of the screw sleeve (10), and the top of the hexagonal block (18) is in contact with the bottom of the connecting post (7).

5. The pneumatic control ball valve for gas-liquid multiphase flow media according to claim 1, characterized in that, The guide block (13) is provided with a limiting post (19) for limiting the guide post (12). One side of the limiting post (19) extends through to the surface of the guide block (13), and the surface of the limiting post (19) is provided with a groove for cooperating with the guide post (12).

6. The pneumatic control ball valve for gas-liquid multiphase flow media according to claim 5, characterized in that, One end of the limiting post (19) is threaded, and the inside of the guide block (13) is provided with a moving groove (20) for the movement of the limiting post (19). The surface of the limiting post (19) is threadedly connected with an abutment sleeve (21), and the surface of the abutment sleeve (21) is used in conjunction with the surface of the guide block (13).

7. The operating process of the pneumatic control ball valve for gas-liquid multiphase flow media according to any one of claims 1-6, characterized in that, The operating process includes the following steps: Step S1: Blocking and interrupting flow, by inserting the sealing plate (6) into the interior of the connecting flange (5), the connecting flange (5) on one side is sealed. Step S2: Disassembly and maintenance. Remove the valve body (4) on the right side from the valve body (4) on the left side to expose the valve (3). Step S3: Disassemble and repair the valve (3). By opening the positioning structure, the positioning structure is separated from the valve (3) for valve (3) replacement and repair. Step S4: Combine and install the new or repaired valve (3) inside the valve body (4). By combining the two valve bodies (4), the installation can be completed quickly.

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