Valve ball with non-return function

Abstract

The utility model relates to valve technical field, concretely is a valve ball with check function, including the ball, movable board, the movable board slidingly arranged inside the ball, the placement board, the placement board sets up inside the ball, first spring, both ends of first spring are fixed with movable board and placement board respectively. This valve ball with check function, through the cooperation between the rotating plate and the swing plate, and then when the fluid enters the ball, will promote movable board to move, the movement of movable board will drive rotating plate to move and promote swing plate, at this moment one side of swing plate will promote the baffle longitudinal movement, makes the baffle no longer covers fixed plate, and fluid can pass through the ball quickly, and when fluid output end stops output, movable board is no longer promoted, the baffle will return to the initial and cover fixed plate, makes fluid unable to backflow to the ball, avoids the impact of counterflow, guarantees the normal use of valve.

Description

Technical Field

[0001] This utility model relates to the field of valve technology, specifically to a valve ball with a backflow prevention function. Background Technology

[0002] As is well known, a ball valve is a type of valve. In pipelines, ball valves are mainly used for shutting off, distributing, and changing the flow direction of the medium. A ball valve is usually composed of parts such as a valve body, a ball, and a valve stem. The ball is the opening and closing element of the ball valve, and the valve stem is used to drive the ball to rotate. The valve stem drives the ball to rotate around the axis of the ball valve, so that the ball valve can be opened and closed.

[0003] The ball of existing ball valves is usually hollow, which allows fluid to pass through when the ball is open. Therefore, it does not have a backflow prevention function. The fluid passes through the ball without any restriction. When the fluid output suddenly stops, the output fluid may flow backward. This will disrupt the flow direction control of the system, causing equipment failure such as pumps. At the same time, the backflow impact can wear down the seals, cause pipeline vibration, and shorten the life of the equipment. Summary of the Invention

[0004] Technical problems to be solved

[0005] In order to overcome the problem of backflow that easily occurs in existing valve balls, this utility model provides a valve ball with a backflow prevention function.

[0006] Technical solution

[0007] To achieve the above objectives, this utility model provides the following technical solution: a valve ball with a backflow prevention function, comprising a ball, a movable plate slidably disposed inside the ball, a placement plate disposed inside the ball, a first spring, the two ends of the first spring being fixedly disposed to the movable plate and the placement plate respectively, the first spring being used to spring the movable plate back to its initial position, multiple sets of rotating plates disposed on one side of the movable plate, a fixed plate fixedly disposed inside the ball, two sets of baffles slidably disposed inside the fixed plate, the baffles being used to block fluid, and no longer blocking fluid after the baffles move, two sets of swing plates hinged to one side of the baffles, the swing plates being inclined, the two sets of swing plates being inclined in opposite directions, and two sets of fixed shafts disposed on one side of the fixed plate, with the side of the swing plate away from the baffle slidably disposed outside the fixed shaft.

[0008] Preferably, the sphere has a groove and two sets of through holes inside, and the groove and through holes are connected. The inner wall of the through holes is provided with a filter plate, and the movable plate and the fixed plate are both located in the groove.

[0009] Furthermore, two sets of connecting plates are provided on one side of the movable plate, and a central shaft is provided on the side of the connecting plate away from the movable plate. The rotating plate is rotatably positioned outside the central shaft.

[0010] Furthermore, a limit rod is provided on the side of the placement plate near the first spring, and the movable plate is slidably disposed on the outside of the limit rod.

[0011] In a further embodiment, a movable shaft is rotatably provided on the side of the swing plate away from the fixed axis, and the movable shaft and the baffle are fixedly arranged.

[0012] Based on the aforementioned scheme, two sets of protrusions are provided on one side of the swing plate, and the protrusions are semi-elliptical.

[0013] Furthermore, based on the aforementioned scheme, two sets of support plates are provided on one side of the fixed plate, a balance bar is provided on one side of the support plate, and the swing plate is slidably disposed on the outside of the balance bar.

[0014] Furthermore, based on the aforementioned scheme, a second spring is provided on one side of the support plate, and a slider is provided at the end of the second spring away from the support plate, with one side of the slider contacting one side of the swing plate.

[0015] Beneficial effects

[0016] This valve ball with anti-backflow function works by cooperating between a rotating plate and a swing plate. When fluid enters the ball, it pushes the movable plate to move. The movement of the movable plate drives the rotating plate to move and pushes the swing plate. At this time, one side of the swing plate pushes the baffle to move longitudinally, so that the baffle no longer blocks the fixed plate, and the fluid can quickly pass through the ball. When the fluid output stops, the movable plate is no longer pushed, and the baffle will return to its initial position and block the fixed plate, preventing the fluid from flowing back into the ball, avoiding the impact of backflow, and ensuring the normal use of the valve. Attached Figure Description

[0017] Figure 1 This is a side view of the structure of this utility model;

[0018] Figure 2 This is a cross-sectional view of the sphere of this utility model;

[0019] Figure 3 This is a schematic diagram of the structure of the movable plate of this utility model;

[0020] Figure 4 This is a schematic diagram of the structure of the swing plate of this utility model;

[0021] Figure 5 This is a schematic diagram of the structure of the balance bar of this utility model;

[0022] Figure 6 This is a cross-sectional view of the structure of the fixing plate of this utility model.

[0023] In the diagram: 1. Sphere; 2. Filter plate; 3. Through hole; 4. Mounting plate; 5. Groove; 6. Fixed plate; 7. Movable plate; 8. Rotating plate; 9. Connecting plate; 10. First spring; 11. Limiting rod; 12. Central shaft; 13. Placement plate; 14. Support block; 15. Fixed shaft; 16. Blocking plate; 17. Swinging plate; 18. Protrusion; 19. Movable shaft; 20. Support plate; 21. Second spring; 22. Slider; 23. Balance bar; 24. Anti-detachment block; 25. Movable groove; 26. Baffle; 27. Discharge hole. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] See Figures 1-6 A valve ball with a backflow prevention function includes a ball 1. The ball 1 has a groove 5 and two sets of through holes 3 inside, and the groove 5 and the through holes 3 are connected. A filter plate 2 is fixedly installed on the inner wall of the through holes 3. A fixed plate 6 is fixedly connected to the inner wall of the groove 5, and a movable plate 7 is slidably connected inside the groove 5. The fixed plate 6 has a discharge hole 27 and a movable groove 25 inside, and the movable groove 25 is connected to the discharge hole 27. Two sets of baffles 26 are slidably connected inside the discharge hole 27, and the baffles 26 can block the discharge hole 27 to prevent fluid from passing through the discharge hole 27.

[0026] First, refer to Figures 2 to 3 In this embodiment, a connecting plate 9 is fixedly connected to the side of the movable plate 7 near the fixed plate 6, and a central shaft 12 is fixedly connected to the side of the connecting plate 9 away from the movable plate 7. A rotating plate 8 is rotatably connected to the outside of the central shaft 12. When the movable plate 7 is pushed by the fluid, it will drive the two sets of connecting plates 9 to move. The movement of the connecting plate 9 will drive the rotating plate 8 to move by driving the central shaft 12.

[0027] Specifically, to prevent the rotating plate 8 from detaching from the central shaft 12, two sets of discs are fixedly connected to the outside of the central shaft 12, and the discs are located on the side of the rotating plate 8 away from the connecting plate 9. The discs can block the rotating plate 8 and prevent the rotating plate 8 from detaching from the central shaft 12 during movement, thus ensuring the normal use of the rotating plate 8.

[0028] Specifically, a placement plate 13 is fixedly connected to the inner wall of the groove 5, and a first spring 10 is fixedly connected between the placement plate 13 and the movable plate 7. Thus, when the fluid pushes the movable plate 7, the first spring 10 will be squeezed by the movable plate 7, and when the movable plate 7 is no longer pushed, the first spring 10 will bounce the movable plate 7 back, so that the movable plate 7 quickly returns to its initial position and covers the groove 5.

[0029] Meanwhile, to prevent the movable plate 7 from misaligning, a limiting rod 11 is fixedly connected to one side of the placement plate 13, and the movable plate 7 is slidably connected to the outside of the limiting rod 11. By setting the limiting rod 11 to limit the movement of the movable plate 7, on the one hand, the limiting rod 11 maintains the balance of the movable plate 7 during movement, preventing the movable plate 7 from becoming unbalanced and swaying during movement, thus ensuring the normal displacement of the movable plate 7; on the other hand, the limiting rod 11 restricts the direction of the movable plate 7, preventing the device from failing due to misalignment of the movable plate 7, thus ensuring the normal use of the device.

[0030] Finally, see Figure 2 , Figure 4 , Figure 5 and Figure 6 In this embodiment, multiple sets of support blocks 14 are fixedly connected to one side of the fixed plate 6, and a fixed shaft 15 is fixedly connected between two sets of support blocks 14. A swing plate 17 is slidably connected to the outside of the fixed shaft 15, and the swing plate 17 is inclined. Two sets of blocking plates 16 are fixedly connected to the outside of the fixed shaft 15. The blocking plates 16 are located on both sides of the swing plate 17, and the blocking plates 16 can prevent the swing plate 17 from detaching from the fixed shaft 15. A movable shaft 19 is rotatably connected to the side of the swing plate 17 away from the fixed shaft 15. The outside of the movable shaft 19 is fixedly connected to the baffle 26. Two sets of protrusions 18 are fixedly connected to the side of the rotating plate 8. The protrusions 18 are semi-elliptical. When the rotating plate 8 moves, it will push the swing plate 17 by pushing the protrusions 18. At this time, the swing plate 17 will swing around the fixed shaft 15 as the axis and slide outside the fixed shaft 15. The side of the swing plate 17 connected to the movable shaft 19 will push the movable shaft 19 to move longitudinally. The movement of the movable shaft 19 will drive the baffle 26 to move, so that the baffle 26 moves into the movable groove 25, so that the discharge hole 27 is no longer blocked by the baffle 26.

[0031] Specifically, to prevent the swing plate 17 from being misaligned, two sets of support plates 20 are fixedly connected to the side of the fixed plate 6 near the swing plate 17. A balance bar 23 is fixedly connected to the side of the support plate 20 near the swing plate 17, and the swing plate 17 is slidably connected to the outside of the balance bar 23. Thus, the balance bar 23 can restrict the direction of the swing plate 17 and prevent the swing plate 17 from being misaligned.

[0032] Meanwhile, in order to make one side of the swing plate 17 move back quickly, a second spring 21 is fixedly connected to one side of the support plate 20. The end of the second spring 21 away from the support plate 20 is fixedly connected to a slider 22. One side of the slider 22 is in contact with one side of the swing plate 17. Thus, when the swing plate 17 is pushed, it will push the slider 22. At this time, the second spring 21 will be squeezed by the slider 22. When the swing plate 17 is no longer pushed, the second spring 21 will bounce the swing plate 17 back by bouncing the slider 22. Thus, the swing plate 17 drives the baffle 26 back and blocks the discharge hole 27 by driving the movable shaft 19, thus preventing backflow into the ball 1.

[0033] Furthermore, to prevent the swing plate 17 from detaching from the balance bar 23, an anti-detachment block 24 is fixedly connected to the outside of the balance bar 23. The anti-detachment block 24 is located on the side of the swing plate 17 away from the support plate 20, thereby blocking the swing plate 17 and preventing it from detaching from the balance bar 23.

[0034] The valve ball with anti-backflow function, through the cooperation between the rotating plate 8 and the swing plate 17, will push the movable plate 7 to move when fluid enters the ball 1. The movement of the movable plate 7 will drive the rotating plate 8 to move and push the swing plate 17. At this time, one side of the swing plate 17 will push the baffle 26 to move longitudinally, so that the baffle 26 no longer blocks the fixed plate 6, and the fluid can quickly pass through the ball 1. When the fluid output stops, the movable plate 7 is no longer pushed, and the baffle 26 will return to its initial position and block the fixed plate 6, so that the fluid cannot flow back into the ball 1, avoiding the impact of backflow and ensuring the normal use of the valve.

[0035] Working principle:

[0036] When using this valve ball with a backflow prevention function, first place it in the desired position. Then, when fluid passes through, it will enter the groove 5 through the through hole 3. At this time, the fluid will push the movable plate 7 to move. The movable plate 7 will move the two sets of connecting plates 9. The movement of the connecting plates 9 will drive the rotating plate 8 to move by driving the central shaft 12. When the rotating plate 8 moves, it will push the swing plate 17 by pushing the protrusion 18. At this time, the swing plate 17 will swing around the fixed shaft 15 as the axis, and the swing plate 17 will slide outside the fixed shaft 15. The side of the swing plate 17 connected to the movable shaft 19 will push the movable shaft 19 to move longitudinally. The movement of shaft 19 will drive the baffle 26 to move, thereby moving the baffle 26 into the movable groove 25, so that the discharge hole 27 is no longer blocked by the baffle 26. At this time, the fluid will be discharged outward through the discharge hole 27 and the second set of through holes 3. When the fluid output ends, the movable plate 7 is no longer pushed, and the first spring 10 will bounce the movable plate 7 back, so that the movable plate 7 quickly returns to the initial position. At this time, the return of the movable plate 7 will drive the rotating plate 8 back and no longer push the swing plate 17. Then the second spring 21 will bounce the swing plate 17 back by bouncing the slider 22, so that the swing plate 17 drives the baffle 26 back and blocks the discharge hole 27 by driving the movable shaft 19, thus preventing backflow into the ball 1.

[0037] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A valve ball with a backflow prevention function, characterized in that, include: sphere(1); Movable plate (7), which is slidably disposed inside the sphere (1); Placement plate (13) is disposed inside the sphere (1); The first spring (10) is fixedly mounted at both ends to the movable plate (7) and the placement plate (13), respectively. Multiple sets of rotating plates (8) are arranged on one side of the movable plate (7); A fixing plate (6) is fixedly disposed inside the sphere (1); Two sets of baffles (26) are slidably disposed inside the fixed plate (6); Two sets of swing plates (17), said swing plates (17) are hinged to one side of the baffle (26); and Two sets of fixed shafts (15) are provided on one side of the fixed plate (6), and the swing plate (17) is slidably provided on the outside of the fixed shafts (15) on the side away from the baffle (26).

2. The valve ball with anti-reverse function according to claim 1, characterized in that, The sphere (1) has a groove (5) and two sets of through holes (3) inside, and the groove (5) and the through holes (3) are connected. The inner wall of the through hole (3) is provided with a filter plate (2), and the movable plate (7) and the fixed plate (6) are both located in the groove (5).

3. The valve ball with anti-reverse function according to claim 1, characterized in that, Two sets of connecting plates (9) are provided on one side of the movable plate (7). A central shaft (12) is provided on the side of the connecting plate (9) away from the movable plate (7). The rotating plate (8) is rotatably located outside the central shaft (12).

4. The valve ball with anti-reverse function according to claim 1, characterized in that, The placement plate (13) is provided with a limit rod (11) on the side near the first spring (10), and the movable plate (7) is slidably disposed on the outside of the limit rod (11).

5. The valve ball with anti-reverse function according to claim 1, characterized in that, The swing plate (17) is rotatably provided with a movable shaft (19) on the side away from the fixed shaft (15), and the movable shaft (19) and the baffle (26) are fixedly provided.

6. The valve ball with anti-reverse function according to claim 1, characterized in that, Two sets of protrusions (18) are provided on one side of the swing plate (17), and the protrusions (18) are semi-elliptical.

7. The valve ball with anti-reverse function according to claim 1, characterized in that, Two sets of support plates (20) are provided on one side of the fixed plate (6), and a balance bar (23) is provided on one side of the support plate (20). The swing plate (17) is slidably disposed on the outside of the balance bar (23).

8. The valve ball with anti-reverse function according to claim 7, characterized in that, A second spring (21) is provided on one side of the support plate (20), and a slider (22) is provided at the end of the second spring (21) away from the support plate (20). One side of the slider (22) is in contact with one side of the swing plate (17).

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