Flange type soft sealing butterfly valve
By adding a filter screen and a leak-proof sealing ring inside the butterfly valve, the problem of fluid impurities damaging the seals is solved, achieving effective filtration and sealing, and extending the service life of the butterfly valve.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- KANGGONG VALVE GRP CO LTD
- Filing Date
- 2025-03-11
- Publication Date
- 2026-05-19
AI Technical Summary
During the use of butterfly valves, impurities in the fluid can easily damage the soft seals and affect the service life of the butterfly valve.
A filter screen is added to the valve body. The filter screen can be intercepted and cleaned by the cooperation of vertical and horizontal rods. The leak-proof sealing ring is combined to improve the sealing performance.
It effectively intercepts impurities in the fluid, extends the service life of the butterfly valve, improves sealing performance, and prevents fluid leakage.
Smart Images
Figure CN224260927U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of valves, specifically to a flanged soft-seal butterfly valve. Background Technology
[0002] A butterfly valve is a type of valve that opens and closes by rotating the valve stem, which in turn rotates the valve plate. Within the valve body's passage, the valve plate rotates around its axis. When fully open, the butterfly valve exhibits low flow resistance. When open to approximately 15°–70°, it provides sensitive flow control. Therefore, in large-diameter regulation applications, the butterfly valve, due to its excellent flow regulation and sealing characteristics, has become one of the fastest-growing valve types in the past decade, with a very wide range of applications. Furthermore, the variety and quantity of butterfly valves used continue to expand, and the industry is developing towards higher temperatures, higher pressures, larger diameters, higher sealing performance, longer service life, easier regulation, and multi-functionality.
[0003] Currently, in the use of butterfly valves, impurities in the fluid can easily damage the sealing components, affecting the service life of the butterfly valve, especially when it is a soft-seal butterfly valve. Utility Model Content
[0004] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a flange-type soft-seal butterfly valve with filtration function.
[0005] To achieve the above objectives, this utility model provides the following technical solution: It includes a valve body, a valve plate, and a valve seat. A flow channel is provided within the valve body, and the valve seat is disposed within the flow channel. The valve plate is rotatably disposed within the valve body and has a sealing position that seals with the valve seat to cut off the flow channel. It also includes a filter screen, a fixing block, a vertical rod, and a horizontal rod. The valve body has a valve port through which the filter screen passes. A fixing block is disposed outside the valve body and has a connecting port opposite to the valve port. The filter screen has a filter part located inside the valve body and a fixing part located at the connecting port. The fixing part has a fixing groove. The fixing block has a vertical groove for sliding of the vertical rod. The fixing block also has a horizontal groove for sliding of the horizontal rod, and the horizontal groove is opposite to the fixing groove. The horizontal groove extends to connect with the vertical groove. The vertical movement of the vertical rod drives the horizontal rod to move horizontally, so that the horizontal rod has a fixed state in which it partially enters the fixing groove. The vertical rod has an oblique groove and the cross-sectional area gradually decreases along the vertical upward direction. The end of the horizontal rod that is relatively close to the vertical rod has an oblique end opposite to the oblique groove. The oblique groove and the oblique end constitute the driving force of the vertical rod on the horizontal rod. It also includes a return spring. The horizontal rod extends vertically and has an extension part. The return spring is disposed between the extension part and the horizontal groove and drives the horizontal rod to move in the direction of the vertical rod.
[0006] By adopting the above technical solution, a filter screen is added to the valve body to intercept impurities in the fluid. After use, the vertical rod is pulled upward so that the inclined groove and the inclined end are opposite each other. Under the action of the return spring, the inclined end enters the inclined groove, and the horizontal rod no longer has a part located in the fixed groove. At this time, the filter screen can be pulled to remove it from the valve body for cleaning, and then the filter screen is reinstalled back into the valve body to achieve fluid filtration.
[0007] The present invention is further configured such that the vertical rod has an operating end located outside the vertical groove.
[0008] By adopting the above technical solution, when the filter screen is fixed on the valve body, the horizontal rod can be driven by pressing the operating end.
[0009] The present invention is further configured such that: a sealing part is provided between the filtering part and the fixing part, and a leak-proof sealing ring is provided between the sealing part and the valve body.
[0010] By adopting the above technical solution, the anti-leakage sealing ring prevents fluid from flowing out of the valve port, thus increasing the sealing performance.
[0011] The present invention is further configured to include a valve stem, a sealing ring, a pressure plate, and a fixing component. The valve plate is provided with a collar sleeved on the valve stem, and the valve plate is also provided with a locking groove. The sealing ring is provided in the locking groove. The pressure plate is provided on the valve plate and the sealing ring is fixed by the fixing component, which can be a screw.
[0012] By adopting the above technical solution, the sealing ring is fixed with a fastener, and the fastener can be disassembled when the sealing ring needs to be replaced. Attached Figure Description
[0013] Figure 1 is a schematic diagram of the overall structure of this utility model;
[0014] Figure 2 is a partial enlarged view of A in Figure 1 of this utility model; Figure 3 is a partial enlarged view of B in Figure 1 of this utility model.
[0015] In the diagram: 1. Valve body; 11. Valve port; 12. Connecting port; 13. Fixing groove; 2. Valve plate; 3. Valve seat; 4. Flow channel; 5. Filter screen; 51. Filtering part; 52. Fixing part; 53. Sealing part; 6. Fixing block; 61. Vertical rod; 62. Horizontal rod; 63. Vertical groove; 64. Horizontal groove; 65. Angled groove; 66. Angled end; 67. Extension part; 68. Return spring; 69. Operating end; 7. Leakage-proof sealing ring; 8. Valve stem; 81. Sealing ring; 82. Pressure plate; 83. Fixing component; 84. Collar; 85. Locking groove. Detailed Implementation
[0016] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.
[0017] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model 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, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.
[0018] As shown in Figures 1-3, this utility model discloses a flanged soft-seal butterfly valve, including a valve body 1, a valve plate 2, and a valve seat 3. A flow channel 4 is provided inside the valve body 1, and the valve seat 3 is disposed within the flow channel 4. The valve plate 2 is rotatably disposed within the valve body 1 and has a sealing position that seals with the valve seat 3 to cut off the flow channel 4. The valve includes a filter screen 5, a fixing block 6, a vertical rod 61, and a horizontal rod 62. A valve port 11 for the filter screen 5 to pass through is provided on the valve body 1. The fixing block 6 is disposed outside the valve body 1 and has a connecting port 12 opposite to the valve port 11. The filter screen 5 has a filtering part 51 located inside the valve body 1 and a fixing part 52 located at the connecting port 12. A fixing groove 13 is provided on the fixing part 52. A vertical groove 63 for the vertical rod 61 to slide on the fixing block 6. The upper part is also provided with a transverse groove 64 for sliding the transverse rod 62, and the transverse groove 64 is opposite to the fixed groove 13. The transverse groove 64 extends to connect with the vertical groove 63. The vertical movement of the vertical rod 61 drives the transverse rod 62 to move laterally, so that the transverse rod 62 has a fixed state in which it partially enters the fixed groove 13. The vertical rod 61 has an oblique groove 65 and the cross-sectional area gradually decreases in the vertical upward direction. The end of the transverse rod 62 that is relatively close to the vertical rod 61 has an oblique end 66 that is opposite to the oblique groove 65. The oblique groove 65 and the oblique end 66 constitute the vertical rod 61 and the transverse rod.
[0019] The drive of 62 also includes a return spring 68. The horizontal rod 62 extends vertically and has an extension 67. The return spring 68 is located between the extension 67 and the horizontal groove 64 and drives the horizontal rod 62 to move in the direction of the vertical rod 61. A filter screen 5 is added inside the valve body 1 to intercept impurities in the fluid. After use, the vertical rod 61 is pulled upward so that the inclined groove 65 and the inclined end 66 are opposite each other. Under the action of the return spring 68, the inclined end 66 enters the inclined groove 65, and the horizontal rod 62 no longer has a part located in the fixed groove 13. At this time, the filter screen 5 can be pulled to remove it from the valve body 1 for cleaning, and then the filter screen 5 is reinstalled back into the valve body 1 to achieve fluid filtration.
[0020] The vertical rod 61 has an operating end 69 located outside the vertical groove 63. When the filter screen 5 is fixed on the valve body 1, the horizontal rod 62 is driven by pressing the operating end 69.
[0021] A sealing part 53 is provided between the filter part 51 and the fixing part 52, and a leak-proof sealing ring 7 is provided between the sealing part 53 and the valve body 1. The leak-proof sealing ring 7 prevents fluid from flowing out of the valve port 11, thereby increasing the sealing performance.
[0022] It also includes a valve stem 8, a sealing ring 81, a pressure plate 82, and a fixing member 83. The valve plate 2 is provided with a collar 84 that is sleeved on the valve stem 8. The valve plate 2 also has a locking groove 85. The sealing ring 81 is disposed in the locking groove 85. The pressure plate 82 is disposed on the valve plate 2 and is fixed to the sealing ring 81 by the fixing member 83. The fixing member 83 can be a screw. The sealing ring 81 is fixed by the fixing member 83. When the sealing ring 81 needs to be replaced, the fixing member 83 can be disassembled.
[0023] Working process: A filter screen 5 is added inside the valve body 1 to intercept impurities in the fluid. After use, the vertical rod 61 is pulled upward so that the inclined groove 65 and the inclined end 66 are opposite each other. Under the action of the return spring 68, the inclined end 66 enters the inclined groove 65, and the horizontal rod 62 no longer has the part located in the fixed groove 13. At this time, the filter screen 5 can be pulled to remove it from the valve body 1 for cleaning, and then the filter screen 5 is reinstalled back into the valve body 1 to achieve fluid filtration.
Claims
1. A flanged soft-seal butterfly valve, comprising a valve body (1), a valve plate (2), and a valve seat (3), wherein a flow channel (4) is provided inside the valve body (1), the valve seat (3) is disposed inside the flow channel (4), and the valve plate (2) is rotatably disposed inside the valve body (1) and has a sealing position that seals with the valve seat (3) to cut off the flow channel (4), characterized in that: The valve body (1) includes a filter screen (5), a fixing block (6), a vertical rod (61), and a horizontal rod (62). The valve body (1) is provided with a valve port (11) through which the filter screen (5) passes. The fixing block (6) is located outside the valve body (1) and has a connecting port (12) opposite to the valve port (11). The filter screen (5) has a filtering part (51) located inside the valve body (1) and a fixing part (52) located at the connecting port (12). The fixing part (52) is provided with a fixing groove (13), the fixing block (6) is provided with a vertical groove (63) for the vertical rod (61) to slide, the fixing block (6) is also provided with a horizontal groove (64) for the horizontal rod (62) to slide, and the horizontal groove (64) is opposite to the fixing groove (13). The horizontal groove (64) extends to connect with the vertical groove (63). The vertical movement of the vertical rod (61) drives the horizontal rod (62) to move horizontally, so that the horizontal rod (62) has a fixed state in which part of it enters the fixing groove (13).
2. The flanged soft-seal butterfly valve according to claim 1, characterized in that: The vertical rod (61) has an oblique groove (65) and the cross-sectional area gradually decreases in the vertical upward direction. The horizontal rod (62) has an oblique end (66) opposite to the oblique groove (65) at one end closer to the vertical rod (61). The oblique groove (65) and the oblique end (66) constitute the driving force of the vertical rod (61) on the horizontal rod (62).
3. The flanged soft-seal butterfly valve according to claim 1, characterized in that: It also includes a return spring (68), and the horizontal rod (62) is provided with an extension (67) extending vertically. The return spring (68) is provided between the extension (67) and the horizontal groove (64) and drives the horizontal rod (62) to move in the direction of the vertical rod (61).
4. A flanged soft-seal butterfly valve according to claim 1, characterized in that: The vertical rod (61) has an operating end (69) located outside the vertical groove (63).
5. A flanged soft-seal butterfly valve according to claim 1, characterized in that: A sealing part (53) is provided between the filter part (51) and the fixing part (52), and a leak-proof sealing ring (7) is provided between the sealing part (53) and the valve body (1).