A wear-resistant C-type two-piece ball valve

Abstract

This invention discloses a wear-resistant C-type two-piece ball valve, belonging to the field of ball valve technology. It includes: a first valve body and a second valve body, fixedly connected by a flange; an annular seat, fixedly connected inside the second valve body, with an annular plate slidably installed inside the annular seat, and an annular scraper fixedly installed inside the annular plate; and a C-type valve core, disposed inside the first and second valve bodies, with an annular mounting groove on the outer side of the C-type valve core, a flexible sealing ring disposed within the annular mounting groove, and an annular sealing groove adapted to the flexible sealing ring on the inner wall of the annular seat. This invention improves sealing performance when closed by the cooperation of the annular plate pusher, support rod, and flexible sealing ring, and allows the flexible sealing ring to retract when opening, thereby reducing friction. Furthermore, the annular scraper and arc-shaped scraper can scrape away dirt from the valve core surface to prevent accumulation and increased resistance, thus improving wear resistance.

Description

Technical Field

[0001] This invention relates to the field of ball valve technology, and more particularly to a wear-resistant C-type two-piece ball valve. Background Technology

[0002] Type C wear-resistant ball valve, also known as eccentric hemispherical valve, is a relatively new type of ball valve. It has some unique advantages due to its structure, such as frictionless switching, wear-resistant seals, and low opening and closing torque. This allows for a smaller actuator size. When equipped with a multi-turn electric actuator, it can achieve regulation and tight shut-off of the medium, and is widely used in petroleum, chemical, and urban water supply and drainage applications where strict shut-off is required.

[0003] Patent document CN114576384A discloses a bidirectional sealing C-type ball valve, including a first valve body and a second valve body. One side wall of the first valve body is welded to one side wall of the second valve body. A limit component is embedded in the top surface of the second valve body. A shaft is rotatably connected inside the limit component. A C-shaped rotating core is fixedly connected to the bottom end of the shaft. A positioning component is rotatably connected to the bottom surface of the C-shaped rotating core. An inlet is opened on the other side of the first valve body, and an outlet is opened through the other side wall of the second valve body. A leak-proof mechanism is provided inside the inlet, which is achieved by the plum blossom protrusion in the leak-proof mechanism and the folded edge of the inlet.

[0004] The above-mentioned technical solution achieves sealing by using a plum blossom-shaped protrusion to abut against the inner periphery of the inlet, creating a folded edge. This sealing method requires strong clamping force, resulting in high frictional resistance during opening and closing, leading to significant wear and poor wear resistance of the ball valve. Furthermore, the valve core will generate scale due to prolonged contact with water, and the aforementioned ball valve structure cannot clean the scale, which will further increase the resistance to opening and closing the ball valve. Therefore, we propose a wear-resistant C-type two-piece ball valve to solve this problem. Summary of the Invention

[0005] The purpose of this invention is to provide a wear-resistant C-type two-piece ball valve to solve the problems mentioned in the background art.

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

[0007] A wear-resistant C-type two-piece ball valve, comprising:

[0008] A first valve body and a second valve body, wherein the first valve body and the second valve body are fixedly connected by a flange;

[0009] An annular seat is fixedly connected to the inside of the second valve body, and an annular plate is slidably installed inside the annular seat, and an annular scraper is fixedly installed inside the annular plate.

[0010] A C-type valve core is disposed inside the first valve body and the second valve body. An annular mounting groove is provided on the outer side of the C-type valve core. A flexible sealing ring is disposed in the annular mounting groove. An annular sealing groove adapted to the flexible sealing ring is provided on the inner wall of the annular seat. Multiple support rods are fixedly connected to the inner side of the flexible sealing ring. An annular sliding groove is provided inside the C-type valve core. An annular sliding plate is slidably installed in the annular sliding groove. Multiple T-shaped grooves are provided on the outer side of the annular sliding plate. Multiple support rods are slidably connected to the corresponding T-shaped grooves. A connecting diagonal rod is fixedly connected to one side of the annular sliding plate.

[0011] The main shaft is rotatably connected to the top of the first valve body. The C-shaped valve core is fixedly sleeved on the bottom outer side of the main shaft. A square groove is opened at the bottom of the main shaft. A square plate is slidably and sealingly installed in the square groove. A transverse groove is opened on the right side of the square plate. A movable plate is slidably installed in the transverse groove. A triangular retaining plate is fixedly connected to the right side of the movable plate. Multiple triangular retaining grooves that are adapted to the triangular retaining plate are opened on the inner wall of the right side of the square groove. The square plate is slidably sleeved on the outside of the connecting diagonal rod.

[0012] An arc-shaped scraper, the top end of which is fixedly connected to a sleeve, which is rotatably fitted onto the outside of the main shaft.

[0013] Preferably, a return spring is fixedly connected to both sides of the top of the square plate, and the top ends of the two return springs are fixedly connected to the top inner wall of the square groove. A vertical hole is opened on the top inner wall of the transverse groove, and a vertical rod is slidably installed in the vertical hole. A horizontal plate is fixedly connected to the bottom end of the vertical rod. An oblique hole is opened on one side of the top of the horizontal plate. An oblique plate is fixedly installed on one side of the bottom of the moving plate. The oblique plate is slidably connected in the oblique hole, and a compression spring is fixedly connected to the left side of the moving plate. A side plate and a connecting spring are fixedly connected to the top inner wall of the transverse groove. The bottom end of the connecting spring is fixedly connected to the bottom of the horizontal plate, and the left end of the compression spring is fixedly connected to the right side of the side plate.

[0014] Preferably, a fixed shaft is fixedly connected to the bottom inner wall of the first valve body, a rotating ring is fixedly connected to the bottom end of the arc-shaped scraper, the rotating ring and the C-shaped valve core are both rotatably sleeved on the outside of the fixed shaft, and a fixed ring is fixedly sleeved on the outside of the fixed shaft. A torsion spring is fixedly connected to the top of the fixed ring, and the torsion spring is fixedly connected to the inner wall of the rotating ring.

[0015] Preferably, a plurality of connecting holes are provided between the annular sliding groove and the annular mounting groove, and the plurality of support rods are slidably connected in the corresponding connecting holes.

[0016] Preferably, a turntable is fixedly sleeved on the outer side of the main shaft, a handle is fixedly connected to the outer side of the turntable, a push rod is fixedly connected to the top of the vertical rod, a guide rod is fixedly connected to the bottom of the push rod, and the handle is slidably sleeved on the outer side of the guide rod.

[0017] Preferably, a shaft seal is fixedly installed inside the first valve body, and the shaft seal is movably sealed against the outside of the main shaft.

[0018] Preferably, a valve cover is fixedly installed on the top of the first valve body by bolts, the valve cover is rotatably sleeved on the outside of the main shaft, and a sealing ring is fixedly connected to the inner wall of the annular seat, the sealing ring being movably abutting against the left side of the C-shaped valve core.

[0019] Preferably, a plurality of spring pieces are fixedly connected to the left side of the annular plate, and the left ends of the plurality of spring pieces are all fixedly connected to the inner wall of the annular seat.

[0020] The beneficial effects of this invention are as follows:

[0021] 1. In this invention, a wear-resistant C-type two-piece ball valve is provided. By connecting the inlet pipe to the right side of the first valve body, water is introduced into the first valve body. Due to the contact between the sealing ring and the C-type valve core, the second valve body is sealed. At this time, the pressure generated by the water impact pushes the annular sliding plate to the left and pushes the square plate upward. During the leftward movement of the annular sliding plate, it slides along the corresponding connecting holes with multiple support rods, causing the flexible sealing ring to open outward and tightly abut against the annular sealing groove. Furthermore, the more support rods are provided, the greater the pressure on the flexible sealing ring. The expansion is more even, which further improves the sealing performance of the C-type ball valve and the annular seat. During the upward movement of the square plate, the triangular groove will move to the left by abutting against the triangular plate. After the square plate rises a certain distance, the moving plate and the triangular plate will reset under the elastic force of the compression spring and re-lock into another triangular groove, thereby preventing the square plate from moving downward. Since the annular slide plate will drive the square plate downward through the connecting diagonal rod when it moves to the right, limiting the downward movement of the square plate can limit the rightward movement of the annular slide plate, thereby ensuring the sealing effect of the flexible sealing ring on the annular sealing groove and preventing leakage.

[0022] 2. In this invention, a wear-resistant C-type two-piece ball valve is provided. When the ball valve is opened, the push rod can be pushed upward to move the vertical rod and the horizontal plate upward. The horizontal plate moves the moving plate and the triangular locking plate to the left through the sliding fit between the inclined hole and the inclined plate, so that the triangular locking plate is disengaged from the triangular locking groove, thereby releasing the fixation of the square plate. At this time, the square plate will move downward due to the action of the return spring, and through the sliding fit with the connecting inclined rod, it will drive the annular sliding plate to move to the right. The annular plate moves closer to each other through the sliding fit with the support rod, and causes the flexible sealing ring to retract into the annular mounting groove, avoiding wear on the flexible sealing ring during the opening of the ball valve.

[0023] 3. In this invention, a wear-resistant C-type two-piece ball valve is opened by rotating the main shaft through the control handle, which in turn drives the C-type valve core to rotate. During the opening process, the dirt on the outer surface of the C-type valve core can be scraped off by an annular scraper.

[0024] 4. In this invention, a wear-resistant C-type two-piece ball valve is provided. After the ball valve is opened, water flows continuously through the first valve body and the second valve body. The impact of the water flow pushes the arc-shaped scraper to rotate around the main shaft, causing the torsion spring to undergo torsional deformation. After the arc-shaped scraper rotates through a certain angle, the angle between the arc-shaped scraper and the direction of the water flow becomes smaller, thus reducing the force on the arc-shaped scraper. Under the elastic force of the torsion spring, the scraper resets. The magnitude of the water flow also changes the impact force on the arc-shaped scraper, causing the arc-shaped scraper to rotate back and forth due to the change in impact force. During the rotation of the arc-shaped scraper, dirt on the outer surface of the C-type valve core is scraped off, preventing excessive resistance during subsequent opening and closing.

[0025] 5. In this invention, the wear-resistant C-type two-piece ball valve can improve sealing performance when closed by the cooperation of the annular plate push plate, support rod and flexible sealing ring, and can retract the flexible sealing ring when it needs to be opened, thereby reducing friction. The annular scraper and arc scraper can scrape off dirt on the surface of the valve core to prevent accumulation and increase resistance, thereby improving wear resistance. Attached Figure Description

[0026] Figure 1 This is a three-dimensional structural diagram of a wear-resistant C-type two-piece ball valve proposed in this invention;

[0027] Figure 2 for Figure 1 A magnified view of part A in the middle;

[0028] Figure 3 This is a cross-sectional structural schematic diagram of a wear-resistant C-type two-piece ball valve proposed in this invention;

[0029] Figure 4 for Figure 3A magnified view of part B in the middle section;

[0030] Figure 5 for Figure 3 A magnified view of part C in the middle;

[0031] Figure 6 for Figure 5 A magnified view of part D in the middle;

[0032] Figure 7 for Figure 5 A magnified view of part E in the middle;

[0033] Figure 8 for Figure 7 A magnified view of part F in the middle;

[0034] Figure 9 This is a three-dimensional structural diagram of the C-type valve core proposed in this invention;

[0035] Figure 10 This is a three-dimensional structural diagram of the flexible sealing ring, support rod, and annular sliding plate proposed in this invention;

[0036] Figure 11 This is a three-dimensional structural diagram of the flexible sealing ring, support rod, connecting diagonal rod, square plate, and annular sliding plate proposed in this invention;

[0037] Figure 12 This is a three-dimensional structural diagram of the arc-shaped scraper, sleeve, and rotating ring proposed in this invention;

[0038] Figure 13 This is a three-dimensional structural diagram of the annular sliding plate proposed in this invention;

[0039] Figure 14 for Figure 13 A magnified view of part G in the middle.

[0040] In the diagram: 1. First valve body; 2. Second valve body; 3. C-type valve core; 4. Valve cover; 5. Annular seat; 501. Annular sealing groove; 6. Main shaft; 601. Triangular groove; 7. Turntable; 8. Handle; 9. Guide rod; 10. Push rod; 11. Vertical rod; 12. Shaft seal; 13. Connecting diagonal rod; 14. Annular sliding plate; 1401. T-slot; 15. Support rod; 16. Flexible sealing ring; 17. Sealing ring; 18. Spring; 19. Annular plate; 20. Annular scraper; 21. Square plate; 22. Return spring; 23. Triangular groove; 24. Moving plate; 25. Inclined plate; 26. Horizontal plate; 27. Connecting spring; 28. Compression spring; 29. ​​Arc-shaped scraper; 30. Fixed shaft; 31. Rotating ring; 32. Sleeve; 33. Torsion spring; 34. Fixed ring. Detailed Implementation

[0041] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0042] Reference Figure 1 - Figure 14 A wear-resistant C-type two-piece ball valve, comprising:

[0043] First valve body 1 and second valve body 2 are fixedly connected by a flange;

[0044] The annular seat 5 is fixedly connected to the inside of the second valve body 2, and an annular plate 19 is slidably installed inside the annular seat 5. An annular scraper 20 is fixedly installed inside the annular plate 19.

[0045] A C-type valve core 3 is disposed inside the first valve body 1 and the second valve body 2. An annular mounting groove is provided on the outer side of the C-type valve core 3. A flexible sealing ring 16 is disposed in the annular mounting groove. An annular sealing groove 501 adapted to the flexible sealing ring 16 is provided on the inner wall of the annular seat 5. Multiple support rods 15 are fixedly connected to the inner side of the flexible sealing ring 16. An annular sliding groove is provided inside the C-type valve core 3. An annular sliding plate 14 is slidably installed in the annular sliding groove. Multiple T-shaped grooves 1401 are provided on the outer side of the annular sliding plate 14. Multiple support rods 15 are slidably connected to the corresponding T-shaped grooves 1401. A connecting diagonal rod 13 is fixedly connected to one side of the annular sliding plate 14.

[0046] The main shaft 6 is rotatably connected to the top of the first valve body 1. The C-type valve core 3 is fixedly sleeved on the bottom outer side of the main shaft 6. A square groove is opened at the bottom of the main shaft 6. A square plate 21 is slidably and sealed in the square groove. A transverse groove is opened on the right side of the square plate 21. A movable plate 24 is slidably installed in the transverse groove. A triangular clamping plate 23 is fixedly connected to the right side of the movable plate 24. Multiple triangular clamping slots 601 adapted to the triangular clamping plate 23 are opened on the inner wall of the right side of the square groove. The square plate 21 is slidably sleeved on the outside of the connecting diagonal rod 13.

[0047] The top of the arc-shaped scraper 29 is fixedly connected to a sleeve 32, which is rotatably sleeved on the outside of the main shaft 6.

[0048] In this embodiment, a return spring 22 is fixedly connected to both sides of the top of the square plate 21. The top ends of the two return springs 22 are fixedly connected to the top inner wall of the square groove. A vertical hole is opened on the top inner wall of the transverse groove. A vertical rod 11 is slidably installed in the vertical hole. A horizontal plate 26 is fixedly connected to the bottom end of the vertical rod 11. An oblique hole is opened on one side of the top of the horizontal plate 26. An oblique plate 25 is fixedly installed on one side of the bottom of the moving plate 24. The oblique plate 25 is slidably connected in the oblique hole. A compression spring 28 is fixedly connected to the left side of the moving plate 24. A side plate and a connecting spring 27 are fixedly connected to the top inner wall of the transverse groove. The bottom end of the connecting spring 27 is fixedly connected to the bottom of the horizontal plate 26, so as to reset the horizontal plate 26. The left end of the compression spring 28 is fixedly connected to the right side of the side plate, so as to reset the moving plate 24. It should be noted that the elastic coefficient of the connecting spring 27 and the compression spring 28 is much smaller than that of the return spring 22.

[0049] In this embodiment, a fixed shaft 30 is fixedly connected to the bottom inner wall of the first valve body 1, and a rotating ring 31 is fixedly connected to the bottom end of the arc-shaped scraper 29. The rotating ring 31 and the C-shaped valve core 3 are both rotatably sleeved on the outside of the fixed shaft 30, and a fixed ring 34 is fixedly sleeved on the outside of the fixed shaft 30. A torsion spring 33 is fixedly connected to the top of the fixed ring 34, and the torsion spring 33 is fixedly connected to the inner wall of the rotating ring 31, thereby resetting the rotating ring 31.

[0050] In this embodiment, multiple connecting holes are provided between the annular sliding groove and the annular mounting groove, and multiple support rods 15 are slidably connected in the corresponding connecting holes, thereby guiding the support rods 15.

[0051] In this embodiment, a turntable 7 is fixedly sleeved on the outer side of the main shaft 6, a handle 8 is fixedly connected to the outer side of the turntable 7, and a push rod 10 is fixedly connected to the top of the vertical rod 11 to push the vertical rod 11 to move. A guide rod 9 is fixedly connected to the bottom of the push rod 10, and the handle 8 is slidably sleeved on the outer side of the guide rod 9 to guide the push rod 10.

[0052] In this embodiment, a shaft seal 12 is fixedly installed inside the first valve body 1. The shaft seal 12 is movably sealed against the outside of the main shaft 6, thereby sealing the main shaft 6. A valve cover 4 is fixedly installed on the top of the first valve body 1 by bolts. The valve cover 4 is rotatably sleeved on the outside of the main shaft 6, thereby sealing the first valve body 1 and rotatably positioning the main shaft 6. A sealing ring 17 is fixedly connected to the inner wall of the annular seat 5. The sealing ring 17 is movably abutted against the left side of the C-shaped valve core 3.

[0053] In this embodiment, a plurality of spring pieces 18 are fixedly connected to the left side of the annular plate 19. The left ends of the plurality of spring pieces 18 are all fixedly connected to the inner wall of the annular seat 5, thereby enabling the horizontal movement of the annular plate 19 to be reset and providing the annular scraper 20 with a space for movement, thus preventing the protruding dirt on the C-type valve core 3 from affecting the normal opening and closing of the ball valve.

[0054] In this embodiment, during use, by connecting the pipes to the right side of the first valve body 1 and the left side of the second valve body 2 respectively, water is introduced into the first valve body 1 from the right side. Since the sealing ring 17 and the C-shaped valve core 3 abut against each other, the second valve body 2 is sealed. At this time, the pressure generated by the water impact pushes the annular sliding plate 14 to the left and pushes the square plate 21 to the upward. During the leftward movement of the annular sliding plate 14, it will slide along the corresponding connecting holes along the sliding cooperation with multiple support rods 15, thereby causing the flexible sealing ring 16 to open outward and tightly abut against the annular sealing groove 501. Furthermore, the more support rods 15 are provided, the more effectively the support rods 15 can open the flexible sealing ring 16. The uniformity of the connection between the C-type ball valve and the annular seat 5 further enhances the sealing performance. During the upward movement of the square plate 21, the triangular groove 601 will move to the left by abutting against the triangular groove 23. After the square plate 21 rises a certain distance, the moving plate 24 and the triangular groove 23 will be reset under the elastic force of the compression spring 28 and re-engage in another triangular groove 601, thereby preventing the square plate 21 from moving downward. Since the annular slide plate 14 will drive the square plate 21 downward through the connecting diagonal rod 13 when it moves to the right, limiting the downward movement of the square plate 21 can limit the rightward movement of the annular slide plate 14, thereby ensuring the sealing effect of the flexible sealing ring 16 on the annular sealing groove 501 and preventing leakage.

[0055] When the ball valve is opened, the push rod 10 can be pushed upward to drive the vertical rod 11 and the horizontal plate 26 to move upward. The horizontal plate 26 drives the moving plate 24 and the triangular locking plate 23 to move to the left through the sliding engagement of the inclined hole and the inclined plate 25, so that the triangular locking plate 23 is dislodged from the triangular locking groove 601, thereby releasing the fixation of the square plate 21. At this time, the square plate 21 will move downward due to the action of the return spring 22, and drive the annular sliding plate 14 to move to the right through the sliding engagement with the connecting inclined rod 13. The annular sliding plate 14 causes the support rod 15 to move closer to each other through the sliding engagement with the support rod 15, and causes the flexible sealing ring 16 to retract into the annular mounting groove, avoiding wear on the flexible sealing ring 16 during the opening of the ball valve.

[0056] The main shaft 6 is rotated by the control handle 8, which in turn drives the C-type valve core 3 to rotate, thereby opening it. During the opening process, the dirt on the outer surface of the C-type valve core 3 can be scraped off by the annular scraper 20.

[0057] After the ball valve is opened, water flows continuously through the first valve body 1 and the second valve body 2. The impact of the water flow pushes the arc-shaped scraper 29 to rotate around the main shaft 6, causing the torsion spring 33 to undergo torsional deformation. After the arc-shaped scraper 29 rotates through a certain angle, the angle between the arc-shaped scraper 29 and the direction of the water flow becomes smaller, so the force on the arc-shaped scraper 29 decreases, and it resets under the elastic force of the torsion spring 33. The magnitude of the water flow also changes the impact force on the arc-shaped scraper 29, causing the arc-shaped scraper 29 to rotate back and forth due to the change in impact force. During the rotation, the arc-shaped scraper 29 scrapes away the dirt on the outer surface of the C-type valve core 3 to prevent excessive resistance during subsequent opening and closing.

[0058] The above provides a detailed description of a wear-resistant C-type two-piece ball valve provided by the present invention. Specific embodiments have been used to illustrate the principles and implementation methods of the invention. These embodiments are merely illustrative and are intended to aid in understanding the method and core concepts of the invention. It should be noted that those skilled in the art can make various improvements and modifications to the invention without departing from its principles, and these improvements and modifications also fall within the scope of protection of the claims of the present invention.

Claims

1. A wear resistant C-type two-piece ball valve, characterized in that, include: A first valve body (1) and a second valve body (2), wherein the first valve body (1) and the second valve body (2) are fixedly connected by a flange; An annular seat (5) is fixedly connected to the inside of the second valve body (2), and an annular plate (19) is slidably installed inside the annular seat (5), and an annular scraper (20) is fixedly installed inside the annular plate (19); A C-type valve core (3) is disposed inside the first valve body (1) and the second valve body (2). An annular mounting groove is provided on the outer side of the C-type valve core (3). A flexible sealing ring (16) is provided in the annular mounting groove. An annular sealing groove (501) adapted to the flexible sealing ring (16) is provided on the inner wall of the annular seat (5). Multiple support rods (15) are fixedly connected to the inner side of the flexible sealing ring (16). An annular sliding groove is provided inside the C-type valve core (3). An annular sliding plate (14) is slidably installed in the annular sliding groove. Multiple T-shaped grooves (1401) are provided on the outer side of the annular sliding plate (14). Multiple support rods (15) are slidably connected in the corresponding T-shaped grooves (1401). A connecting diagonal rod (13) is fixedly connected to one side of the annular sliding plate (14). The main shaft (6) is rotatably connected to the top of the first valve body (1). The C-type valve core (3) is fixedly sleeved on the bottom outer side of the main shaft (6). A square groove is opened at the bottom of the main shaft (6). A square plate (21) is slidably sealed in the square groove. A transverse groove is opened on the right side of the square plate (21). A movable plate (24) is slidably installed in the transverse groove. A triangular clamping plate (23) is fixedly connected to the right side of the movable plate (24). A plurality of triangular clamping slots (601) adapted to the triangular clamping plate (23) are opened on the inner wall of the right side of the square groove. The square plate (21) is slidably sleeved on the outside of the connecting diagonal rod (13). An arc-shaped scraper (29) is provided, with a sleeve (32) fixedly connected to its top end. The sleeve (32) is rotatably fitted onto the outside of the main shaft (6).

2. A wear resistant C-type two-piece ball valve according to claim 1, characterized in that Both sides of the top of the square plate (21) are fixedly connected with reset springs (22). The top ends of the two reset springs (22) are fixedly connected to the top inner wall of the square groove. A vertical hole is opened on the top inner wall of the transverse groove. A vertical rod (11) is slidably installed in the vertical hole. A horizontal plate (26) is fixedly connected to the bottom end of the vertical rod (11). An oblique hole is opened on one side of the top of the horizontal plate (26). An oblique plate (25) is fixedly installed on one side of the bottom of the moving plate (24). The oblique plate (25) is slidably connected in the oblique hole. A compression spring (28) is fixedly connected to the left side of the moving plate (24). A side plate and a connecting spring (27) are fixedly connected to the top inner wall of the transverse groove. The bottom end of the connecting spring (27) is fixedly connected to the bottom of the horizontal plate (26). The left end of the compression spring (28) is fixedly connected to the right side of the side plate.

3. A wear resistant C-type two-piece ball valve according to claim 1, characterized in that A fixed shaft (30) is fixedly connected to the bottom inner wall of the first valve body (1), and a rotating ring (31) is fixedly connected to the bottom end of the arc-shaped scraper (29). The rotating ring (31) and the C-shaped valve core (3) are both rotatably sleeved on the outside of the fixed shaft (30), and a fixed ring (34) is fixedly sleeved on the outside of the fixed shaft (30). A torsion spring (33) is fixedly connected to the top of the fixed ring (34), and the torsion spring (33) is fixedly connected to the inner wall of the rotating ring (31).

4. The wear resistant C-type two-piece ball valve according to claim 1, wherein, Multiple connecting holes are provided between the annular sliding groove and the annular mounting groove, and multiple support rods (15) are slidably connected in the corresponding connecting holes.

5. A wear-resistant C-type two-piece ball valve according to claim 1, characterized in that, A turntable (7) is fixedly sleeved on the outside of the main shaft (6), and a handle (8) is fixedly connected to the outside of the turntable (7). A push rod (10) is fixedly connected to the top of the vertical rod (11), and a guide rod (9) is fixedly connected to the bottom of the push rod (10). The handle (8) is slidably sleeved on the outside of the guide rod (9).

6. The wear-resistant C-type two-piece ball valve according to claim 1, characterized in that, A shaft seal (12) is fixedly installed inside the first valve body (1), and the shaft seal (12) is movably sealed against the outside of the main shaft (6).

7. A wear-resistant C-type two-piece ball valve according to claim 1, characterized in that, A valve cover (4) is fixedly installed on the top of the first valve body (1) by bolts. The valve cover (4) is rotatably sleeved on the outside of the main shaft (6). A sealing ring (17) is fixedly connected to the inner wall of the annular seat (5). The sealing ring (17) is movably abutted against the left side of the C-type valve core (3).

8. A wear-resistant C-type two-piece ball valve according to claim 1, characterized in that, Multiple spring pieces (18) are fixedly connected to the left side of the annular plate (19), and the left ends of the multiple spring pieces (18) are all fixedly connected to the inner wall of the annular seat (5).

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