Scraper type C-shaped ball valve

Abstract

The invention discloses a scraper type C-shaped ball valve, relates to the technical field of ball valves, and aims to ensure the sealing effect, a backing ring is arranged in a gap between a valve seat and a valve core, so that the sealing performance is improved, the smoothness during closing is reduced, and meanwhile, the valve core is easy to wear. According to the scraper type C-shaped ball valve, the backing ring and the arc-shaped edge are matched with the sealing ring, in the process of closing the ball valve, the arc-shaped edge of the backing ring firstly makes contact with the valve element, the valve element is guided, meanwhile, friction between the valve element and the valve element is reduced, it is guaranteed that the ball valve is closed smoothly when the valve element rotates, and clamping degree and valve element abrasion increase during closing are avoided; under the action of the elastic force of the spring, the sliding ring drives the sealing ring to be tightly attached to the edge gap position of the sealing face of the valve element, and it is guaranteed that after the sealing face of the valve element is abraded, the good sealing performance is still achieved.

Description

Technical Field

[0001] The invention relates to the technical field of ball valves, in particular to a scraper-type C-type ball valve. Background Art

[0002] At present, C-type ball valve is a special type of ball valve. The valve core of C-type ball valve is C-shaped. This shape makes the contact area between the valve core and the valve seat relatively small, and the operating torque required when rotating the valve core is small, which makes the operation easier and more flexible. In addition, when the medium passes through, the valve core of C-type structure can have a certain flow diversion effect on the flow of the medium, making the medium flow smoother and reducing the energy loss during the flow of the medium. The scraper in the scraper C-type ball valve scrapes to make the valve have a self-cleaning function, reducing the valve failure and maintenance requirements caused by impurity accumulation. This feature is particularly important in the occasions of handling solid particles or viscous media, which can greatly extend the service life of the valve;

[0003] During the opening and closing process of the ball valve, a gasket is placed in the gap between the valve seat and the valve core to ensure the sealing effect, thereby improving the sealing performance. However, this reduces the smoothness during closing and causes the valve core to be easily worn. Summary of the invention

[0004] To achieve the above objectives, the present invention is implemented through the following technical solutions: a scraper-type C-type ball valve, comprising:

[0005] A valve body, a motor is fixedly mounted on the top of the valve body, and flanges are fixedly mounted on both sides of the valve body;

[0006] A valve seat having a passage for fluid circulation and installed inside the valve body;

[0007] A valve core is used to control the opening and closing of the flow channel of the valve seat, and the valve core is installed inside the valve seat, a valve stem is fixedly installed on the top of the valve core, and the top of the valve stem is connected to the output end of the motor;

[0008] A scraper mechanism, which is used to clean the debris inside the valve core, and the scraper mechanism is installed inside the valve core;

[0009] Wherein, the valve seat comprises a hollow cover, a groove ring is fixedly installed on the inner wall of the hollow cover, a slip ring is slidably installed on the inner wall of the groove ring, a gasket ring and a sealing ring are fixedly installed on the outer side of the slip ring, the gasket ring is located on the outer side of the sealing ring, and the inner wall of the gasket ring is tightly fitted with the outer side of the sealing ring, the edge of the gasket ring is arc-shaped, and the gasket ring cooperates with the arc edge with the sealing ring. In the process of closing the ball valve, the arc edge of the gasket ring first contacts with the valve core to guide the valve core and reduce the friction between the gasket ring and the valve core, thereby ensuring the smoothness of the valve core when rotating to close the ball valve, avoiding the occurrence of sticking when closing, increasing the wear of the valve core, and causing the ball valve to be reduced in sealing after multiple switches. The side of the sealing ring close to the valve core is arc-shaped and matched with the valve core, and a sliding rod is fixedly installed on the side of the slip ring away from the gasket ring. The sliding rod is evenly installed along the center of the slip ring, and a disc is fixedly installed on the end of the sliding rod away from the slip ring. An annular groove is provided on the outer side of the hollow cover, and the sliding installation of the slip ring is matched with the elastic force of the spring, so that the slip ring can slide in the groove ring under the action of the elastic force. When closed, under the action of the elastic force, the slip ring drives the sealing ring to fit tightly against the edge gap position of the valve core sealing surface, ensuring that the valve core sealing surface still has good sealing performance after wear. A clamping ring is clamped at the annular groove of the hollow cover, and a spring is fixedly installed between the clamping ring and the disc.

[0010] Preferably, the valve core includes a sealing block, the outer side of the sealing block is slidably adapted to the inner wall of the hollow cover, and the top of the sealing block is fixedly connected to the bottom end of the valve stem, the top of the valve stem passes through the hollow cover and is connected to the output end of the motor through a coupling, a V-shaped groove is provided at the center of the inner wall of the sealing block, and a floating ring is slidably installed on the top of the outer side of the valve stem, and a groove is provided at the bottom of the floating ring, and the groove of the floating ring cooperates with the overflowed fluid so that the fluid first accumulates in the groove, and after more fluid overflows, the floating ring is pushed upward, thereby increasing the fitting pressure between the floating ring and the fixed ring, improving the sealing, and preventing the fluid from overflowing due to excessive pressure, and a fixing ring is fixedly installed on the outer side of the valve stem, and the outer side of the fixing ring is fixedly connected to the inner wall of the hollow cover, and the fixing ring is located directly above the floating ring.

[0011] Preferably, a support block is fixedly installed at the center position of the bottom of the sealing block, the bottom of the support block is rotatably connected to the inner wall of the valve body, and a ring is fixedly installed on the top of the outer side of the support block, and a rotating block is fixedly installed on the outer side of the support block, the bottom of the ring is tightly fitted with the top of the rotating block, and the cooperation between the rotating block and the support block provides supporting force for the sealing block at the bottom, avoiding large friction with the hollow cover and reducing wear, and when the ring closes the gap between the sealing block and the hollow cover, the rotating connection between the rotating block and the hollow cover ensures smooth switching of the ball valve, and the outer side of the ring is tightly fitted with the inner wall of the hollow cover, the outer side of the rotating block is rotatably connected to the inner wall of the hollow cover, and the top of the ring is tightly fitted with the bottom of the sealing block.

[0012] Preferably, the scraper mechanism comprises a fixed shaft, an upper and lower ends of the fixed shaft are fixedly installed with an axis groove disk, the fixed shaft is fixedly connected to the inner wall of the sealing block through the axis groove disk, and a swivel is rotatably installed on the outer side of the fixed shaft, the swivel is symmetrically installed along the axis center position of the fixed shaft, the outer side of the swivel is fixedly installed with a fixed block, the inner wall of the fixed block is fixedly installed with an axis block, the fixed block is fixedly installed with a scraper through the axis block, the inner wall of the scraper is fixedly installed with an arc plate, and the inner wall of the arc plate is fixedly installed with a baffle, through the angle matching between the baffle and the side plate, the side plate and the baffle are not in the same vertical plane or parallel plane, so that when the fluid flows, the scrapers at different positions can be driven to rotate at any time to ensure the cleaning effect of the scraper on the flow path, avoid path blockage, cause fluid flow obstruction, increase internal pressure, and cause fluid overflow, the baffle is symmetrically installed along the axis center position of the arc plate, the outer side of the swivel is fixedly installed with a side plate, the side plate is a semicircular plate, and the side plate is symmetrically installed along the axis center position of the swivel.

[0013] The present invention provides a scraper-type C-type ball valve. It has the following beneficial effects:

[0014] 1. The scraper-type C-type ball valve cooperates with the gasket, the arc edge and the sealing ring. In the process of closing the ball valve, the arc edge of the gasket first contacts the valve core to guide the valve core and reduce the friction between the valve core and the valve core, ensuring that the valve core rotates smoothly to close the ball valve, avoiding sticking when closing, increasing the wear of the valve core, and causing the sealing of the ball valve to decrease after multiple openings and closings.

[0015] Second, the scraper-type C-type ball valve cooperates with the sliding installation of the slip ring through the elastic force of the spring, so that the slip ring can slide in the groove ring under the action of the elastic force. When closed, under the action of the elastic force, the slip ring drives the sealing ring to fit closely to the edge gap position of the valve core sealing surface, ensuring that the valve core sealing surface still has good sealing performance after wear.

[0016] 3. The scraper-type C-type ball valve cooperates with the overflowing fluid through the groove of the floating ring, so that the fluid accumulates in the groove first. After a large amount of fluid overflows, the floating ring is pushed upward to increase the fitting pressure between the floating ring and the fixed ring, improve the sealing performance, and avoid fluid overflow due to excessive pressure.

[0017] Fourth, the scraper-type C-type ball valve provides support force for the sealing block at the bottom through the cooperation of the rotating block and the supporting block, avoids large friction with the hollow cover, reduces wear, and when the ring closes the gap between the sealing block and the hollow cover, the rotating connection between the rotating block and the hollow cover ensures smooth opening and closing of the ball valve.

[0018] 5. The scraper-type C-type ball valve, through the angle coordination between the baffle and the side plate, makes the side plate and the baffle not in the same vertical plane or parallel plane, so that when the fluid flows, the scrapers in different positions can be driven to rotate at any time to ensure the cleaning effect of the scraper on the flow path, avoid path blockage, cause fluid flow obstruction, increase internal pressure, and cause fluid overflow. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the external structure of a scraper-type C-type ball valve of the present invention;

[0020] Figure 2 This is a structural dissection diagram of a scraper-type C-type ball valve of the present invention;

[0021] Figure 3 This is a dissected diagram of the valve seat structure of the present invention;

[0022] Figure 4 It is a schematic diagram of the structure of the valve seat part of the present invention;

[0023] Figure 5 This is a partial structural anatomical diagram of the valve seat of the present invention;

[0024] Figure 6 This is a schematic diagram of the valve core structure of the present invention;

[0025] Figure 7 This is a bottom view of the valve core structure of the present invention;

[0026] Figure 8 It is a schematic diagram of the structure of the scraper mechanism of the present invention;

[0027] Fig. 9 It is a partial structural schematic diagram of the scraper mechanism of the present invention.

[0028] In the figure: 1. valve body; 2. valve seat; 3. valve core; 4. scraper mechanism; 5. flange; 6. valve stem; 7. motor; 21. hollow cover; 22. retaining ring; 23. groove ring; 24. disc; 25. spring; 26. slip ring; 27. slide rod; 28. gasket; 29. ​​sealing ring; 31. sealing block; 32. floating ring; 33. fixed ring; 34. V-groove; 35. sleeve ring; 36. swivel block; 37. support block; 41. shaft groove disk; 42. fixed shaft; 43. side plate; 44. arc plate; 45. baffle; 46. swivel; 47. fixed block; 48. shaft block; 49. scraper. DETAILED DESCRIPTION

[0029] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments. The embodiments of the present invention are provided for the purpose of illustration and description, and are not intended to be exhaustive or to limit the present invention to the disclosed forms. Many modifications and variations will be apparent to those of ordinary skill in the art. The embodiments are selected and described in order to better illustrate the principles and practical applications of the present invention, and to enable those of ordinary skill in the art to understand the present invention and thereby design various embodiments with various modifications suitable for specific uses.

[0030] The first embodiment, as Figures 1 to 5 As shown, the present invention provides a technical solution: a scraper-type C-type ball valve, comprising:

[0031] A valve body 1, a motor 7 is fixedly mounted on the top of the valve body 1, and flanges 5 are fixedly mounted on both sides of the valve body 1;

[0032] A valve seat 2, wherein the valve seat 2 has a passage for fluid circulation and is installed inside the valve body 1;

[0033] The valve core 3 is used to control the opening and closing of the flow channel of the valve seat 2, and the valve core 3 is installed inside the valve seat 2. A valve stem 6 is fixedly installed on the top of the valve core 3, and the top of the valve stem 6 is connected to the output end of the motor 7;

[0034] A scraper mechanism 4, which is used to clean the debris inside the valve core 3, and the scraper mechanism 4 is installed inside the valve core 3;

[0035] Wherein, the valve seat 2 comprises a hollow cover 21, a groove ring 23 is fixedly installed on the inner wall of the hollow cover 21, a slip ring 26 is slidably installed on the inner wall of the groove ring 23, when the valve seat 2 cooperates with the valve core 3 to realize the opening and closing of the flow path, when the valve core 3 and the groove ring 23 are completely fitted, the path of the fluid passing through the inner side of the groove ring 23 is closed, and the closure between the pipelines on both sides is realized, when sealing, through the elastic force of the spring 25 itself, the spring 25 is restricted by the clamping ring 22, and the elastic force is transmitted to the slide rod 27 through the disc 24, so that the slide rod 27 transmits the elastic force to the gasket ring 28 and the sealing ring 29 through the slip ring 26, so that the gasket ring 28 cooperates with the sealing ring 29, and under the action of the elastic force, it is close to the valve core 3, increases the fitting pressure between the valve core 3 and the valve seat 2, ensures the fitting degree between the valve seat 2 and the valve core 3 when sealing, and improves the sealing performance, the outer side of the slip ring 26 is fixedly installed with a gasket ring 28 and a sealing ring The outer side of the hollow cover 21 is provided with an annular groove. When the valve core 3 is rotated in the open state to close the ball valve, the rotating valve core 3 first contacts with the arc-shaped edge of the annular groove 28, so that the arc-shaped edge contacts and guides the rotating valve core 3, and at the same time reduces the contact area with the valve core 3 and reduces the friction between the valve core 3 and the valve core 3. A snap ring 22 is clamped at the annular groove of the hollow cover 21, and a spring 25 is fixedly installed between the snap ring 22 and the disc 24.

[0036] The second embodiment is based on the first embodiment. Figure 6 to Figure 7As shown, the valve core 3 includes a sealing block 31, the outer side of the sealing block 31 is slidably adapted to the inner wall of the hollow cover 21, and the top of the sealing block 31 is fixedly connected to the bottom end of the valve stem 6, the top end of the valve stem 6 passes through the hollow cover 21 and is connected to the output end of the motor 7 through a coupling, a V-shaped groove 34 is provided at the center of the inner wall of the sealing block 31, and a floating ring 32 is slidably installed on the top of the outer side of the valve stem 6, and a groove is provided at the bottom of the floating ring 32. Through the fixed connection between the sealing block 31 and the valve stem 6, the motor 7 controls the valve stem 6 to rotate, and drives the sealing block 31 to rotate inside the hollow cover 21, so that the sealing block 3 1 and the groove ring 23 change to control the opening and closing of the flow gap. At the same time, during the rotation process, the support block 37 is rotatably connected to the inner wall of the valve body 1, and the rotating block 36 is rotatably connected to the inner wall of the hollow cover 21 to reduce the resistance during rotation. At the same time, the sleeve ring 35 seals the gap between the hollow cover 21 and the bottom of the sealing block 31 to prevent the fluid from overflowing from the hollow cover 21 during the fluid circulation of the ball valve. A fixing ring 33 is fixedly installed on the outer side of the valve stem 6. The outer side of the fixing ring 33 is fixedly connected to the inner wall of the hollow cover 21, and the fixing ring 33 is located directly above the floating ring 32.

[0037] A support block 37 is fixedly installed at the center position of the bottom of the sealing block 31. The bottom of the support block 37 is rotatably connected to the inner wall of the valve body 1, and a collar 35 is fixedly installed on the top of the outer side of the support block 37. A rotating block 36 is fixedly installed on the outer side of the support block 37. The bottom of the collar 35 is tightly fitted with the top of the rotating block 36, and the outer side of the collar 35 is tightly fitted with the inner wall of the hollow cover 21. The internal fluid pressure is relatively large. When the fluid overflows upward during circulation, the fluid first enters the bottom of the floating ring 32, and passes through the groove at the bottom of the floating ring 32 to provide space for the overflowing fluid. At the same time, after a large amount of fluid overflows, the floating ring 32 moves upward to cooperate with the fluid pressure, and transmits the fluid pressure to the fixed ring 33 through the floating ring 32, thereby increasing the fitting pressure between the fixed ring 33 and the floating ring 32. The outer side of the rotating block 36 is rotatably connected to the inner wall of the hollow cover 21, and the top of the collar 35 is tightly fitted with the bottom of the sealing block 31.

[0038] The third embodiment is based on the first and second embodiments. Figures 8 to 9As shown, the scraper mechanism 4 includes a fixed shaft 42, and shaft groove plates 41 are fixedly installed at both upper and lower ends of the fixed shaft 42. The fixed shaft 42 is fixedly connected to the inner wall of the sealing block 31 through the shaft groove plates 41, and a swivel 46 is rotatably installed on the outer side of the fixed shaft 42. The swivel 46 is symmetrically installed along the center position of the axis of the fixed shaft 42, and a fixed block 47 is fixedly installed on the outer side of the swivel 46. During the flow of the fluid, the side plate 43 and the baffle 45 are impacted by the flow of the fluid, so that the side plate 43 and the baffle 45 are matched. The scraper 49 and the arc plate 44 are combined under the action of the fluid flow force, so that they rotate along the center position of the axis of the fixed shaft 42 under the restriction of the swivel ring 46 and the shaft block 48. During the rotation, the scraper 49 contacts the inner wall of the valve core 3 to clean the valve core 3 to prevent the attachments in the fluid from adhering to the inner wall of the valve core 3, causing the valve core 3 to accumulate debris and block the flow path. The inner wall of the fixed block 47 is fixedly installed with the shaft block 48, and the fixed block 47 is fixedly installed with the scraper 49 through the shaft block 48.

[0039] An arc plate 44 is fixedly installed on the inner wall of the scraper 49, and a baffle 45 is fixedly installed on the inner wall of the arc plate 44. The baffle 45 is symmetrically installed along the center position of the axis of the arc plate 44. When the side plate 43 and the baffle 45 cooperate, the side plate 43 cooperates with the baffle 45 through the semicircular shape of the side plate 43. At the same time, the side plate 43 and the baffle 45 are not in the same vertical plane or parallel plane, so that when the fluid flows, the scraper 49 at different positions can be driven to rotate at any time. The outer side of the swivel 46 is fixedly installed with a side plate 43, the side plate 43 is a semicircular plate, and the side plate 43 is symmetrically installed along the center position of the axis of the swivel 46.

[0040] When in use, the pipeline is connected to the ball valve through the flange 5, and the valve stem 6 is controlled to rotate by the motor 7, which drives the valve core 3 to rotate inside the valve seat 2, so that the valve core 3 cooperates with the valve seat 2 to control the opening and closing of the internal flow paths of the ball valves at both ends, thereby realizing the circulation of fluid in the pipelines on both sides. During the flow of fluid, the scraper mechanism 4 cooperates with the valve core 3 to clean the inner wall of the valve core 3 to ensure the smooth flow path of the fluid.

[0041] When the valve seat 2 cooperates with the valve core 3 to realize the opening and closing of the flow path, when the valve core 3 and the groove ring 23 are completely fitted, the path of the fluid passing through the inner side of the groove ring 23 is closed to realize the closure between the pipelines on both sides. When sealing, through the elastic force of the spring 25 itself, the spring 25, under the restriction of the clamping ring 22, transmits the elastic force to the slide rod 27 through the disc 24, so that the slide rod 27 transmits the elastic force to the gasket 28 and the sealing ring 29 through the sliding ring 26, so that the gasket 28 cooperates with the sealing ring 29, and under the action of the elastic force, it is close to the valve core 3, increases the fitting pressure between the valve core 3 and the valve seat 2, ensures the fitting degree between the valve seat 2 and the valve core 3 when sealing, and improves the sealing performance. At the same time, when the valve core 3 is rotated in the open state to close the ball valve, the rotating valve core 3 first contacts the arc edge of the gasket 28, so that the arc edge contacts and guides the rotating valve core 3, and at the same time reduces the contact area with the valve core 3, and reduces the friction between the valve core 3.

[0042] In the valve core 3, the sealing block 31 is fixedly connected to the valve stem 6, so that the motor 7 controls the valve stem 6 to rotate, and drives the sealing block 31 to rotate inside the hollow cover 21, so that the angle between the sealing block 31 and the groove ring 23 changes, and the opening and closing of the flow gap are controlled. At the same time, during the rotation process, the support block 37 is rotatably connected to the inner wall of the valve body 1, and the rotating block 36 is rotatably connected to the inner wall of the hollow cover 21 to reduce the resistance during rotation. At the same time, the sleeve ring 35 seals the gap between the hollow cover 21 and the bottom of the sealing block 31 to prevent the ball valve from overflowing the hollow cover 21 during the fluid circulation process. At the same time, the internal fluid pressure is relatively large. When the fluid overflows upward during the circulation, the fluid first enters the bottom of the floating ring 32, and passes through the groove at the bottom of the floating ring 32 to provide space for the overflowing fluid. At the same time, after a large amount of fluid overflows, the floating ring 32 moves upward, cooperates with the fluid pressure, and transmits the fluid pressure to the fixed ring 33 through the floating ring 32, thereby increasing the fitting pressure between the fixed ring 33 and the floating ring 32.

[0043] During the fluid circulation process, the flow of fluid impacts the side plate 43 and the baffle 45, so that the side plate 43 and the baffle 45 cooperate with each other. Under the action of the fluid flow force, the scraper 49 and the arc plate 44 are driven to rotate along the axial center position of the fixed shaft 42 under the restriction of the swivel 46 and the shaft block 48. During the rotation process, the scraper 49 contacts the inner wall of the valve core 3 to clean the valve core 3 to prevent the attachments in the fluid from adhering to the inner wall of the valve core 3, causing the valve core 3 to accumulate debris and block the flow path. At the same time, when the side plate 43 and the baffle 45 cooperate, the semicircular shape of the side plate 43 cooperates with the baffle 45. At the same time, the side plate 43 and the baffle 45 are not on the same vertical plane or parallel plane, so that when the fluid flows, the scrapers 49 at different positions can be driven to rotate at any time.

[0044] Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field and related fields without creative work should fall within the scope of protection of the present invention. The structures, devices and operating methods not specifically described and explained in the present invention are implemented according to the conventional means in the field unless otherwise specified and limited.

Claims

1. A scraper type C-type ball valve, characterized in that: include: A valve body (1), a motor (7) is fixedly mounted on the top of the valve body (1), and flanges (5) are fixedly mounted on both sides of the valve body (1); A valve seat (2), the valve seat (2) having a passage for fluid circulation, and the valve seat (2) is installed inside the valve body (1); A valve core (3), the valve core (3) is used to control the opening and closing of the flow channel of the valve seat (2), and the valve core (3) is installed inside the valve seat (2), a valve stem (6) is fixedly installed on the top of the valve core (3), and the top end of the valve stem (6) is connected to the output end of the motor (7); A scraper mechanism (4), the scraper mechanism (4) is used to clean the debris inside the valve core (3), and the scraper mechanism (4) is installed inside the valve core (3); The valve seat (2) comprises a hollow cover (21), a groove ring (23) is fixedly mounted on the inner wall of the hollow cover (21), a slip ring (26) is slidably mounted on the inner wall of the groove ring (23), a gasket ring (28) and a sealing ring (29) are fixedly mounted on the outer side of the slip ring (26), the gasket ring (28) is located on the outer side of the sealing ring (29), and the inner wall of the gasket ring (28) is tightly fitted with the outer side of the sealing ring (29), the edge of the gasket ring (28) is arc-shaped, and the side of the sealing ring (29) close to the valve core (3) is arc-shaped and matches the valve core (3).

2. A scraper type C-type ball valve according to claim 1, characterized in that: A sliding rod (27) is fixedly installed on the side of the slip ring (26) away from the gasket ring (28), and the sliding rod (27) is evenly installed along the center of the slip ring (26). A disc (24) is fixedly installed on the end of the sliding rod (27) away from the slip ring (26). An annular groove is provided on the outer side of the hollow cover (21), and a snap ring (22) is clamped in the annular groove of the hollow cover (21). A spring (25) is fixedly installed between the snap ring (22) and the disc (24).

3. A scraper type C-type ball valve according to claim 1, characterized in that: The valve core (3) comprises a sealing block (31), the outer side of the sealing block (31) is slidably matched with the inner wall of the hollow cover (21), and the top of the sealing block (31) is fixedly connected to the bottom end of the valve stem (6), and the top end of the valve stem (6) passes through the hollow cover (21) and is connected to the output end of the motor (7) through a coupling.

4. A scraper type C-type ball valve according to claim 3, characterized in that: A V-shaped groove (34) is provided at the center of the inner wall of the sealing block (31), and a floating ring (32) is slidably mounted on the top of the outer side of the valve stem (6), and a groove is provided at the bottom of the floating ring (32). A fixing ring (33) is fixedly mounted on the outer side of the valve stem (6), and the outer side of the fixing ring (33) is fixedly connected to the inner wall of the hollow cover (21), and the fixing ring (33) is located directly above the floating ring (32).

5. A scraper type C-type ball valve according to claim 4, characterized in that: A support block (37) is fixedly mounted at the center position of the bottom of the sealing block (31); the bottom of the support block (37) is rotatably connected to the inner wall of the valve body (1); a collar (35) is fixedly mounted on the top of the outer side of the support block (37); and a rotating block (36) is fixedly mounted on the outer side of the support block (37).

6. A scraper type C-type ball valve according to claim 5, characterized in that: The bottom of the collar (35) is tightly fitted with the top of the rotating block (36), and the outer side of the collar (35) is tightly fitted with the inner wall of the hollow cover (21). The outer side of the rotating block (36) is rotatably connected to the inner wall of the hollow cover (21), and the top of the collar (35) is tightly fitted with the bottom of the sealing block (31).

7. The scraper type C-type ball valve according to claim 1, characterized in that: The scraper mechanism (4) comprises a fixed shaft (42), and shaft groove disks (41) are fixedly mounted on both upper and lower ends of the fixed shaft (42). The fixed shaft (42) is fixedly connected to the inner wall of the sealing block (31) via the shaft groove disk (41), and a rotating ring (46) is rotatably mounted on the outer side of the fixed shaft (42).

8. A scraper type C-type ball valve according to claim 7, characterized in that: The rotating ring (46) is symmetrically installed along the central position of the axis of the fixed shaft (42), the outer side of the rotating ring (46) is fixedly installed with a fixed block (47), the inner wall of the fixed block (47) is fixedly installed with a shaft block (48), and the fixed block (47) is fixedly installed with a scraper (49) through the shaft block (48).

9. A scraper type C-type ball valve according to claim 8, characterized in that: An arc-shaped plate (44) is fixedly mounted on the inner wall of the scraper (49), and a baffle (45) is fixedly mounted on the inner wall of the arc-shaped plate (44). The baffle (45) is symmetrically mounted along the central position of the axis of the arc-shaped plate (44).

10. The scraper type C-type ball valve according to claim 8, characterized in that: A side plate (43) is fixedly mounted on the outer side of the rotating ring (46); the side plate (43) is a semicircular plate, and the side plate (43) is symmetrically mounted along the central position of the axis of the rotating ring (46).

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