Two-piece high platform flange ball valve

Abstract

The utility model relates to a two-piece high platform flange ball valve in the field of flange ball valve, including valve body and valve cover, the inside of valve body forms the valve cavity, and is established with the passage on the valve body, is established with the flow channel on the valve cover, the rotatable ball body is provided in the valve cavity, the inside of valve cavity is provided with first valve seat, the inside of flow channel is provided with second valve seat, the side of first valve seat is connected with first cleaning scraper near the ball body, the surface of first cleaning scraper forms first scraper tooth, the side of second valve seat is connected with second cleaning scraper, the surface of second cleaning scraper forms second scraper tooth, the bottom of valve body is established with the sewage hole that communicates with the valve cavity, the sewage hole is connected with sealing bolt, the sealing ring is set up on sealing bolt and is worn, the utility model discloses through the setting of first cleaning scraper and second cleaning scraper, make the rotation of ball body and carry out self -cleaning, thereby can control ball body and drive smoothly, and through the sewage hole can discharge the residual medium in the valve cavity.

Description

Technical Field

[0001] This utility model relates to the field of flange ball valves, specifically to a two-piece high-platform flange ball valve. Background Technology

[0002] Flanged ball valves, as core devices in the field of fluid control, have a wide range of applications, primarily used for cutting off, connecting, or regulating the flow of media. Their spherical structure, which allows for opening and closing by rotating 90°, offers advantages such as low fluid resistance, reliable sealing, and convenient operation, making them particularly suitable for complex fluid media containing particles or fibers, as well as high-temperature and high-pressure conditions. The two-piece high-platform flanged ball valve, as an innovative and improved product in this field, has significant advantages in terms of compact structure, self-cleaning ability, and operational stability, making it especially suitable for scenarios with stringent requirements for sealing performance and cleaning efficiency, such as slurries and easily scaled media.

[0003] Traditional flanged ball valves typically consist of a valve body, ball, stem, seat, and flange connection assembly. The two-piece high-platform flanged ball valve builds upon this design by employing a split valve body. Two symmetrical shell pieces are bolted together to form a sealing cavity, and the stem extends to form a high platform structure to accommodate the actuator. The ball surface is mirror-polished, creating a 360° annular sealing surface with the PTFE / metal composite sealing seat.

[0004] However, existing flanged ball valves still have certain technical defects. In traditional ball valves, particles or scale in the medium easily adhere to the ball's surface during rotation, leading to accelerated wear of the sealing surface and affecting the sealing effect between the valve seat and the ball. While some valves have self-cleaning functions, the cleaning components are mostly located within the medium flow channel, which can affect flow rate and are structurally complex and easily damaged. They can only clean a localized area of ​​the valve body's inner wall and the ball's cutoff from the valve body. The fluid medium easily adheres to the outer surface of the ball, and with long-term adhesion, the ball and valve body's inner walls experience resistance to rotation and opening due to the adhered medium, thus affecting valve lifespan and system operational safety. Therefore, there is an urgent need for a flanged ball valve that combines self-cleaning and highly reliable sealing. Utility Model Content

[0005] The purpose of this utility model is to solve the above-mentioned defects and provide a two-piece high-platform flange ball valve to solve the technical problem in the background art of how to make the ball of the flange ball valve self-cleaning, so as to improve the service life and ensure the smooth driving of the ball to open and close the flow channel.

[0006] The objective of this utility model is achieved through the following means:

[0007] A two-piece high-platform flange ball valve includes a valve body and a valve cover. One end of the valve body and valve cover are paired and connected by bolts. The valve body has an internal valve cavity, and a channel communicating with the valve cavity is provided on the valve body. The valve cover has a flow channel communicating with the valve cavity and the channel. A rotatable ball is disposed within the valve cavity, and a through hole is provided at the axis of the ball. A valve stem is connected to the valve body via a mounting part. One end of the valve stem passes through the valve cavity and connects to the ball, while the other end of the valve stem protrudes from the valve body and is connected to a handle. Rotation of the valve stem drives the ball to connect the through hole with the channel and the flow channel. The valve body is open or closed. A first valve seat is provided inside the valve cavity, and a second valve seat is provided inside the flow channel. The first and second valve seats are symmetrically distributed on both sides of the sphere. A first cleaning scraper is connected to the side of the first valve seat near the sphere. The surface of the first cleaning scraper has several first scraping teeth that contact the outer surface of the sphere. A second cleaning scraper is connected to the side of the second valve seat near the sphere. The surface of the second cleaning scraper has several second scraping teeth that contact the outer surface of the sphere. A drain hole communicating with the valve cavity is opened at the bottom of the valve body. A sealing bolt is connected to the drain hole, and a sealing ring is sleeved on the sealing bolt.

[0008] Furthermore, as described above, the valve cavity has a first connecting portion for mating and mounting a first valve seat, the inner wall of the first connecting portion has a first positioning protrusion, and the outer surface of the first valve seat has a first positioning groove for insertion and mating with the first positioning protrusion.

[0009] Furthermore, as described above, the flow channel has a second connecting portion for mating and installing the second valve seat, the inner wall of the second connecting portion has a second positioning protrusion, and the outer surface of the second valve seat has a second positioning groove for insertion and mating with the second positioning protrusion.

[0010] Furthermore, as described above, the first valve seat is provided with a first insertion hole, and the back of the first cleaning scraper is provided with a first insertion post that is inserted into the first insertion hole. The second valve seat is provided with a second insertion hole, and the back of the second cleaning scraper is provided with a second insertion post that is inserted into the second insertion hole.

[0011] The insertion and fitting structure of the first insertion post and the first insertion hole, and the second insertion post and the second insertion hole, achieves a stable connection between the cleaning scraper and the valve seat, preventing the scraper from falling off or shifting during the rotation of the ball, ensuring that the scraper teeth continuously contact the surface of the ball, effectively scraping off particles, scale and other attachments, reducing wear on the sealing surface, and facilitating quick replacement and maintenance of the scraper.

[0012] Furthermore, as described above, both the first and second scraping teeth extend toward the sphere, so that the first and second scraping teeth come into contact with the surface of the sphere. When the sphere is rotated, the adhering substances on the surface of the sphere are scraped off through the contact between the first and second scraping teeth and the sphere.

[0013] The design of the first and second scraper teeth extending towards and contacting the surface of the ball allows for direct removal of deposits from the ball's surface through mechanical scraping as the ball rotates. This reduces wear on the sealing surface caused by particles in the medium, lowers resistance during ball rotation, ensures smooth valve opening and closing, and avoids rotational jamming caused by long-term accumulation of deposits.

[0014] Furthermore, as described above, the drain hole is internally threaded, and the sealing bolt is connected to the drain hole through the threaded portion. The bottom of the valve body has a connecting hole that communicates with the drain hole. A sealing portion is provided between the connecting hole and the drain hole, and a sealing ring is nested within the sealing portion. A connecting flange for pressing the sealing ring is formed on the sealing bolt, so that the sealing ring is positioned between the drain hole and the connecting flange.

[0015] The combined design of the drain hole threaded connection and the sealing ring clamping structure ensures a reliable seal of the drain hole when it is closed, preventing media leakage. At the same time, it allows the valve cavity to be drained periodically by opening the sealing bolt when needed, keeping the valve cavity clean, reducing the risk of corrosion or blockage caused by media residue, and ensuring the safe operation of the system.

[0016] Furthermore, as described above, the first and second cleaning scrapers are made of polytetrafluoroethylene, rubber, silicone rubber, or nickel-based alloy.

[0017] Cleaning scrapers are made of materials such as polytetrafluoroethylene, rubber, silicone rubber, or nickel-based alloys. By utilizing the corrosion resistance, wear resistance, and low friction properties of these materials, reliable and stable cleaning scrapers are selected according to the characteristics of different fluids. This ensures the cleaning effect of the scraping teeth while reducing the wear of the scraper itself, extending its service life, and avoiding scratches on the surface of the ball, thereby improving the overall reliability of the valve.

[0018] Furthermore, as described above, a gasket for sealing is provided between the valve body and the valve cover.

[0019] The gasket between the valve body and the valve cover forms a sealing barrier to prevent media leakage from the connection, improve the overall sealing performance of the valve, ensure the safe operation of the system, reduce the corrosion of the internal components of the valve cavity by the external environment, and extend the service life of the valve.

[0020] The beneficial effects of this utility model are as follows: By symmetrically arranging the first and second cleaning scrapers on both sides of the ball, the first and second scraping teeth contact the outer surface of the ball. During the rotation of the ball with the valve stem, the first and second scraping teeth continuously scrape away media particles, scale, and other impurities attached to the surface of the ball, reducing the adhesion of impurities on the ball surface, reducing the risk of wear on the sealing surface, improving the durability of the sealing effect, and reducing accumulation between the ball and the valve seat sealing surface. At the same time, it reduces the ball rotation resistance caused by the attachments, ensuring the smooth operation of the valve opening and closing. The drain hole at the bottom of the valve body achieves controllable sealing through the sealing bolt and sealing ring. When the ball rotation is subject to greater resistance due to the attachments, the accumulated impurity particles or residual media in the valve cavity can be discharged by opening the drain hole, preventing dirt from accumulating at the bottom of the valve cavity, which could cause the ball to jam or the seal to fail. By cooperating with the ball surface cleaning mechanism, the ball can perform self-cleaning to improve its service life, thereby controlling the smooth drive of the ball and ensuring the connection of the flow channel and passage. Attached Figure Description

[0021] Figure 1 This is a top-view schematic diagram of the overall structure of this embodiment;

[0022] Figure 2 This is a schematic diagram of the overall structure from a bottom-view perspective in this embodiment;

[0023] Figure 3 This is a schematic diagram of the internal structure of this embodiment;

[0024] Figure 4 for Figure 3 A magnified view of part A in the diagram;

[0025] Figure 5 This is a cross-sectional view of this embodiment;

[0026] Figure 6 This is a structural breakdown diagram of this embodiment;

[0027] Figure 7 This is a schematic diagram showing the contact between the first and second cleaning scrapers and the ball in this embodiment;

[0028] Figure 8 This is a schematic diagram of the structure of the first cleaning scraper or the second cleaning scraper in this embodiment;

[0029] Figure 9 This is a schematic diagram of the structure of the first valve seat or the second valve seat in this embodiment;

[0030] The reference numerals in the figure are as follows:

[0031] 100-Valve body, 101-Valve cavity, 102-Channel, 103-Drain hole, 104-First connecting part, 105-First positioning protrusion, 106-Mounting part, 107-Sealing part;

[0032] 200-Valve cover, 201-Flow channel, 202-Second connecting part, 203-Second positioning protrusion;

[0033] 300 - Ball; 400 - Valve stem; 500 - Handle;

[0034] 600 - First valve seat, 601 - First positioning groove, 602 - First insertion hole;

[0035] 700 - Second valve seat, 701 - Second positioning groove, 702 - Second insertion hole;

[0036] 800 - First cleaning scraper, 801 - First scraper tooth, 802 - First insert post;

[0037] 900 - Second cleaning scraper, 901 - Second scraper tooth, 902 - Second insert post;

[0038] 1000 - Sealing bolt, 1001 - Threaded part, 1002 - Connecting flange;

[0039] 2000 - Sealing ring, 3000 - Gasket. Detailed Implementation

[0040] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0041] To make the technical problem to be solved, the technical solution and the beneficial effects of this utility model clearer, the following describes the solution in further detail with reference to the accompanying drawings and embodiments.

[0042] It should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this scheme and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0043] In this embodiment, refer to Figures 1-9The present invention relates to a two-piece high-platform flange ball valve, comprising a valve body 100 and a valve cover 200. One end of the valve body 100 and the valve cover 200 are paired and connected by bolts. A valve cavity 101 is formed inside the valve body 100, and a channel 102 communicating with the valve cavity 101 is provided on the valve body 100. A flow channel 201 communicating with the valve cavity 101 and the channel 102 is provided on the valve cover 200. A rotatable ball 300 is disposed within the valve cavity 101, and a through hole is provided at the axis of the ball 300. A valve stem 400 is connected to the valve body 100 via a mounting part 106. One end of the valve stem 400 passes through the valve cavity 101 and is connected to the ball 300, while the other end of the valve stem 400 protrudes outside the valve body 100 and is connected to a handle 500. Rotation of the valve stem 400 can drive the ball 300 to connect the through hole with the channel 102 and the flow channel 102. The flow channels 201 are interconnected or closed. A first valve seat 600 is provided inside the valve cavity 101, and a second valve seat 700 is provided inside the flow channel 201. The first valve seat 600 and the second valve seat 700 are symmetrically distributed on both sides of the ball 300. A first cleaning scraper 800 is connected to the side of the first valve seat 600 near the ball 300. The surface of the first cleaning scraper 800 has a plurality of first scraping teeth 801 that contact the outer surface of the ball 300. A second cleaning scraper 900 is connected to the side of the second valve seat 700 near the ball 300. The surface of the second cleaning scraper 900 has a plurality of second scraping teeth 901 that contact the outer surface of the ball 300. A drain hole 103 communicating with the valve cavity 101 is provided at the bottom of the valve body 100. A sealing bolt 1000 is connected to the drain hole 103, and a sealing ring 2000 is sleeved on the sealing bolt 1000.

[0044] Specifically, refer to Figures 7-9 In this embodiment, the first valve seat and the second valve seat have the same structure, and the first cleaning scraper and the second cleaning scraper have the same structure, so that they can be symmetrically arranged on both sides of the sphere.

[0045] The valve cavity 101 has a first connecting part 104 for mating and installing the first valve seat 600. The inner wall of the first connecting part 104 has a first positioning protrusion 105. The outer surface of the first valve seat 600 has a first positioning groove 601 for insertion and mating with the first positioning protrusion 105.

[0046] The insertion and assembly structure of the first positioning groove 601 and the first positioning protrusion 105 enables the precise positioning and stable installation of the first valve seat 600 in the valve cavity 101, effectively preventing displacement of the first valve seat 600 caused by media impact or vibration, maintaining continuous contact between the ball 300 and the sealing surface of the first valve seat 600, reducing the risk of sealing failure caused by the movement of the first valve seat 600, and thus reducing the impact of the surface deposits of the ball 300 on the sealing performance.

[0047] The flow channel 201 has a second connecting part 202 for mating and installing the second valve seat 700. The inner wall of the second connecting part 202 has a second positioning protrusion 203. The outer surface of the second valve seat 700 has a second positioning groove 701 that is inserted and mated with the second positioning protrusion 203.

[0048] The insertion and assembly design of the second positioning groove 701 and the second positioning protrusion 203 ensures that the second valve seat 700 is accurately and fixedly installed in the flow channel 201, avoids misalignment of the sealing surface due to installation deviation, improves the sealing reliability of the second valve seat 700 and the ball 300, and reduces the impact wear on the second valve seat 700 during medium flow, thus extending the service life of the second valve seat 700.

[0049] Specifically, both the first valve seat 600 and the second valve seat 700 have openings inside, allowing the ball 300 to rotate and connect the through hole with the opening, thus putting the flange ball valve in the open state. Conversely, the ball 300 rotates and the outer sealing surface cuts off the connection between the through hole and the opening, thus putting the flange ball valve in the closed state. The specific opening and closing of the ball 300 is a conventional technical means of flange ball valves in this field and will not be described in detail here.

[0050] Specifically, in some embodiments, the first valve seat 600 and the second valve seat 700 are connected to the first connecting part 104 and the second connecting part 202 respectively by adhesive. The specific installation and use of the first valve seat 600 and the second valve seat 700 are conventional technical means in the art and will not be described in detail here.

[0051] The first valve seat 600 is provided with a first insertion hole 602, and the back of the first cleaning scraper 800 is provided with a first insertion post 802 that is inserted into the first insertion hole 602. The second valve seat 700 is provided with a second insertion hole 702, and the back of the second cleaning scraper 900 is provided with a second insertion post 902 that is inserted into the second insertion hole 702.

[0052] The insertion and assembly structure of the first insertion post 802 with the first insertion hole 602 and the second insertion post 902 with the second insertion hole 702 achieves a stable connection between the cleaning scraper and the valve seat, preventing the scraper from falling off or shifting during the rotation of the ball 300, ensuring that the scraper teeth continuously contact the surface of the ball 300, effectively scraping off particles, scale and other attachments, reducing wear on the sealing surface, and facilitating quick replacement and maintenance of the scraper.

[0053] Specifically, in this embodiment, the cleaning scraper is fixedly connected to the valve seat by the mating insertion of the insertion hole and the insertion post, and the back of the cleaning scraper is fixedly connected to the valve seat by adhesive. This ensures the stability and reliability of the connection between the cleaning scraper and the valve seat, and ensures the service life of the cleaning scraper connection.

[0054] The first scraper tooth 801 and the second scraper tooth 901 both extend toward the sphere 300, so that the first scraper tooth 801 and the second scraper tooth 901 contact the surface of the sphere 300. When the sphere 300 is rotated, the adhering substances on the surface of the sphere 300 are scraped off through the contact between the first scraper tooth 801 and the second scraper tooth 901 and the sphere 300.

[0055] The design of the first scraper tooth 801 and the second scraper tooth 901 extending to and contacting the surface of the ball 300 allows for the direct removal of deposits on the surface of the ball 300 through mechanical scraping when the ball 300 rotates. This reduces wear on the sealing surface caused by particles in the medium, lowers the resistance when the ball 300 rotates, ensures smooth valve opening and closing, and avoids rotation jamming caused by long-term accumulation of deposits.

[0056] The drain hole 103 is internally threaded, and the sealing bolt 1000 is connected to the drain hole 103 through the threaded part 1001. The bottom of the valve body 100 is provided with a connecting hole that communicates with the drain hole 103. A sealing part 107 is provided between the connecting hole and the drain hole 103. The sealing ring 2000 is nested in the sealing part 107. A connecting flange 1002 for pressing the sealing ring 2000 is formed on the sealing bolt 1000, so that the sealing ring 2000 is located between the drain hole 103 and the connecting flange 1002.

[0057] The combined design of the threaded connection of the drain hole 103 and the clamping structure of the sealing ring 2000 achieves a reliable seal of the drain hole 103 in the closed state, preventing media leakage. At the same time, it allows the discharge of dirt in the valve chamber 101 by opening the sealing bolt 1000 when needed, keeping the valve chamber 101 clean, reducing the risk of corrosion or blockage caused by media residue, and ensuring the safe operation of the system.

[0058] In some embodiments, the first cleaning scraper 800 and the second cleaning scraper 900 are made of polytetrafluoroethylene, rubber, silicone rubber, or nickel-based alloy.

[0059] Cleaning scrapers are made of materials such as polytetrafluoroethylene, rubber, silicone rubber, or nickel-based alloys. By utilizing the corrosion resistance, wear resistance, and low friction properties of these materials, reliable and stable cleaning scrapers are selected according to the characteristics of different fluids. This ensures the cleaning effect of the scraping teeth while reducing the wear of the scraper itself, extending its service life, and avoiding scratches on the surface of the ball 300, thereby improving the overall reliability of the valve.

[0060] The first valve seat 600 and the second valve seat 700 are symmetrically distributed on both sides of the ball 300. Together with the cleaning action of the cleaning scraper, they ensure that the ball 300 is subjected to uniform force on both sides during rotation. This improves the stability of the sealing effect and enhances the overall structural reliability of the valve.

[0061] A gasket 3000 for sealing is provided between the valve body 100 and the valve cover 200. The gasket 3000 between the valve body 100 and the valve cover 200 forms a sealing barrier to prevent the medium from leaking from the connection, improve the overall sealing performance of the valve, ensure the safe operation of the system, and at the same time reduce the corrosion of the internal components of the valve cavity 101 by the external environment, thus extending the service life of the valve.

[0062] The specific operating principle in this embodiment is as follows:

[0063] The first cleaning scraper 800 and the second cleaning scraper 900 are respectively connected to the first valve seat 600 and the second valve seat 700, so that the first valve seat 600 and the second valve seat 700 are respectively disposed in the first connecting part 104 and the second connecting part 202. The first valve seat 600 is positioned by pairing with the first positioning groove 601 and the first positioning protrusion 105, and the second valve seat 700 is positioned by pairing with the second positioning groove 701 and the second positioning protrusion 203, so as to ensure that the first valve seat 600 and the second valve seat 700 can be connected. For reliability and stability, the ball 300 is connected to the valve stem 400 and disposed in the valve cavity 101, and is located between the valve body 100 and the valve cover 200, so that the first valve seat 600 and the second valve seat 700 are distributed opposite to each other on both sides of the ball 300. At the same time, the interior of the first valve seat 600 and the second valve seat 700 are both formed with sealing contact surfaces that contact the ball 300. The first cleaning scraper 801 and the second cleaning scraper 900 contact the outer surface of the ball 300 through the first scraper 800 and the second scraper 901.

[0064] When it is necessary to close or open the flange ball valve, the valve stem 400 is driven by the handle 500 to rotate the ball 300. The contact between the first scraper tooth 801 and the second scraper tooth 901 and the outer surface of the ball 300 can continuously scrape off the medium particles, scale and other impurities attached to the surface of the ball 300, reduce the adhesion of impurities on the surface of the ball 300, reduce the risk of wear on the sealing surface, improve the durability of the sealing effect, and reduce the accumulation of impurities and foreign objects between the ball 300 and the valve seat sealing surface. At the same time, it reduces the rotational resistance of the ball 300 caused by the attachments, and ensures the smooth operation of valve opening and closing.

[0065] The drain hole 103 at the bottom of the valve body 100 is sealed by the threaded portion 1001 of the sealing bolt 1000, and a sealing ring 2000 is provided between the drain hole 103 and the connecting flange 1002 to achieve a seal. When the ball 300 rotates with greater resistance due to the influence of deposits, the impurities or residual media accumulated in the valve cavity 101 can be discharged by opening the drain hole 103, preventing dirt from accumulating at the bottom of the valve cavity 101, which could cause the ball 300 to get stuck or the seal to fail. By cooperating with the surface cleaning mechanism of the ball 300, the ball 300 can perform self-cleaning to improve its service life, thereby controlling the smooth drive of the ball 300 and ensuring that the flow channel 201 and the channel 102 are connected.

[0066] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Although the present utility model has been disclosed above with reference to a preferred embodiment, it is not intended to limit the present utility model. Any person skilled in the art can make some changes or modifications to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present utility model. Any simple modifications, equivalent changes, and modifications made to the above embodiments based on the present utility model without departing from the scope of the present utility model shall fall within the scope of the present utility model.

Claims

1. A two-piece high-platform flange ball valve, comprising a valve body and a valve cover, wherein one end of the valve body and the valve cover are paired and connected by bolts, a valve cavity is formed inside the valve body, and a channel communicating with the valve cavity is provided on the valve body, and a flow channel communicating with the valve cavity and the channel is provided on the valve cover, characterized in that: The valve cavity contains a rotatable sphere with a through hole at its axis. A valve stem is connected to the valve body via a mounting part. One end of the valve stem passes through the valve cavity and connects to the sphere, while the other end protrudes from the valve body and is connected to a handle. Rotation of the valve stem can drive the sphere to connect or close the through hole with the channel and flow path. A first valve seat is provided inside the valve cavity, and a second valve seat is provided inside the flow path. The first and second valve seats are symmetrically distributed on both sides of the sphere. A first cleaning scraper is connected to the side of the first valve seat near the sphere, and the surface of the first cleaning scraper has several first scraping teeth that contact the outer surface of the sphere. A second cleaning scraper is connected to the side of the second valve seat near the sphere, and the surface of the second cleaning scraper has several second scraping teeth that contact the outer surface of the sphere. A drain hole communicating with the valve cavity is provided at the bottom of the valve body, and a sealing bolt is connected to the drain hole. A sealing ring is fitted onto the sealing bolt.

2. The two-piece high-platform flange ball valve according to claim 1, characterized in that: The valve cavity has a first connecting part for mating and installing a first valve seat. The inner wall of the first connecting part has a first positioning protrusion. The outer surface of the first valve seat has a first positioning groove for insertion and mating with the first positioning protrusion.

3. The two-piece high-platform flange ball valve according to claim 1, characterized in that: The flow channel has a second connecting part for mating and installing the second valve seat. The inner wall of the second connecting part has a second positioning protrusion. The outer surface of the second valve seat has a second positioning groove for insertion and mating with the second positioning protrusion.

4. The two-piece high-platform flange ball valve according to claim 1, characterized in that: The first valve seat has a first insertion hole, and the back of the first cleaning scraper has a first insertion post that is inserted into the first insertion hole. The second valve seat has a second insertion hole, and the back of the second cleaning scraper has a second insertion post that is inserted into the second insertion hole.

5. A two-piece high-platform flange ball valve according to claim 4, characterized in that: Both the first and second scraping teeth extend toward the sphere, so that the first and second scraping teeth come into contact with the surface of the sphere. When the sphere is rotated, the attachments on the surface of the sphere are scraped off through the contact between the first and second scraping teeth and the sphere.

6. A two-piece high-platform flange ball valve according to any one of claims 1-5, characterized in that: The drain hole has internal threads, and the sealing bolt is connected to the drain hole through the thread. The bottom of the valve body has a connecting hole that communicates with the drain hole. A sealing part is provided between the connecting hole and the drain hole, and a sealing ring is nested in the sealing part. A connecting flange for pressing the sealing ring is formed on the sealing bolt, so that the sealing ring is located between the drain hole and the connecting flange.

7. A two-piece high-platform flange ball valve according to any one of claims 1-5, characterized in that: The first and second cleaning scrapers are made of polytetrafluoroethylene, rubber, silicone rubber, or nickel-based alloy.

8. A two-piece high-platform flange ball valve according to any one of claims 1-5, characterized in that: A gasket for sealing is provided between the valve body and the valve cover.

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