Convenient opening and closing double eccentric butterfly valve with high sealing performance

Abstract

This utility model discloses a conveniently openable double eccentric butterfly valve with high sealing performance, relating to the field of double eccentric butterfly valves. It includes a valve seat, with a rotating rod rotatably connected inside the valve seat. A drive module is installed at the end of the rotating rod, and a base plate is installed on the outer wall of the rotating rod. A first sealing groove is formed on the side of the base plate away from the rotating rod, and a sealing gasket movably abuts inside the first sealing groove. A panel movably abuts on one side of the sealing gasket, and a second sealing groove corresponding to the position of the sealing gasket is formed on the panel. A first threaded rod tightly connects the panel, protective plate, and base plate together, making the valve structure more stable and helping to maintain the sealing state of the sealing gasket, avoiding seal failure due to structural loosening. Even under long-term use or under certain external forces, the sealing gasket can still maintain a good sealing effect, further enhancing the reliability and durability of the valve.

Description

Technical Field

[0001] This utility model relates to the technical field of double eccentric butterfly valves, specifically a double eccentric butterfly valve with high sealing performance and convenient opening and closing. Background Technology

[0002] The double eccentric butterfly valve is a type of valve whose main feature is that while the valve stem shaft deviates from the center of the sealing surface, the center of the valve stem water passage hole is offset to the left and right from the valve stem shaft, thus dividing the disc inside the double eccentric butterfly valve into two parts with one side having more and the other side having less.

[0003] For example, patent CN222102770U discloses a bidirectional sealing double eccentric butterfly valve, including a valve stem. Rotating the valve stem causes the valve to rotate inside the valve body. When water passes through the valve body, it erodes the adjusting sealing assembly on the outer periphery of the valve, causing wear. When the adjusting sealing assembly wears down, resulting in poor sealing, the operator removes the sealing rod from the limiting screw groove on the outer periphery of the valve and rotates the limiting rod out of the limiting screw groove at one end of the adjusting plate and the valve. At this time, the elastic sealing ring on the outer periphery of the valve is pulled out through the adjusting slide. When the elastic sealing ring is pulled out, the rubber sealing block in the middle of the two sets of elastic sealing rings is pulled out of the valve. In actual use, it is inevitable to face external impacts and changes in water pressure. When the valve is subjected to external impacts or changes in water pressure, it is difficult to effectively absorb and buffer the impact force of the water flow, which can easily damage the internal structure of the valve and affect the sealing performance and normal operation of the valve.

[0004] To address the aforementioned issues, there is an urgent need for innovative design based on the existing double eccentric butterfly valve. Utility Model Content

[0005] The purpose of this utility model is to provide a convenient double eccentric butterfly valve with high sealing performance, in order to solve the problem mentioned in the background art that, in actual use, it is inevitable to face external impacts and changes in water pressure. When the valve is subjected to external impacts or changes in water pressure, it is difficult to effectively absorb and buffer the impact force of the water flow, which can easily damage the internal structure of the valve and affect the sealing performance and normal operation of the valve.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a double eccentric butterfly valve with high sealing performance and convenient opening and closing, including a valve seat, a rotating rod rotatably connected inside the valve seat, a drive module installed at the end of the rotating rod, and a base plate installed on the outer wall of the rotating rod; a first sealing groove is provided on the side of the base plate away from the rotating rod, a sealing gasket is movably abutted inside the first sealing groove, a panel is movably abutted on one side of the sealing gasket, and a second sealing groove corresponding to the position of the sealing gasket is provided on the panel.

[0007] Furthermore, a protective plate is movably abutted against one side of the panel, and a first threaded rod is slidably connected inside the protective plate. Both the panel and the base plate have first threaded grooves inside, and the first threaded rod is threadedly connected inside the first threaded groove.

[0008] Furthermore, a guide plate is installed on one side of the protective plate, and a buffer plate is slidably connected inside the guide plate. A shock-absorbing spring is installed on the side of the buffer plate near the protective plate, and one end of the shock-absorbing spring is installed on the protective plate.

[0009] Furthermore, a second threaded rod is slidably connected inside the buffer plate, and a telescopic rod is fixedly connected to the outer wall of one end of the second threaded rod. The end of the telescopic rod is fixedly connected to the buffer plate, and the second threaded rod is threadedly connected to the inside of the protective plate.

[0010] Furthermore, an O-ring is installed on the outer ring of the buffer plate.

[0011] Furthermore, the sealing gasket is T-shaped.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] This highly reliable and easy-to-open double eccentric butterfly valve features a first threaded rod that tightly connects the panel, protective plate, and base plate together, making the valve structure more robust and helping to maintain the sealing state of the gasket, preventing seal failure due to structural loosening. Even after long-term use or under certain external forces, the gasket can still maintain a good sealing effect, further enhancing the valve's reliability and durability.

[0014] Furthermore, through the buffer plate and shock-absorbing spring inside the guide plate, when the valve is subjected to external impact or pressure change, the buffer plate will slide inside the guide plate, compressing the shock-absorbing spring. The elastic deformation of the shock-absorbing spring can absorb and buffer the impact force, reduce damage to the internal structure of the valve, protect the valve's sealing performance and normal operation, effectively cope with various emergencies, and improve the valve's impact resistance and stability.

[0015] Furthermore, when the valve opens or closes, the water flow is guided by the guide plate, effectively preventing the water from directly impacting the protective plate. This not only protects the protective plate but also reduces the erosion and damage to the valve's internal structure caused by the water flow, thus extending the valve's service life. Attached Figure Description

[0016] Figure 1 This is a three-dimensional front view of the present invention.

[0017] Figure 2 This is a three-dimensional structural diagram of the overall back of this utility model.

[0018] Figure 3 This is a partial three-dimensional structural diagram of the present invention.

[0019] Figure 4 This is a partially exploded three-dimensional structural diagram of the present invention.

[0020] Figure 5 This is a cross-sectional three-dimensional structural diagram of the base plate of this utility model.

[0021] Figure 6 This is a partial cross-sectional three-dimensional structural diagram of the present invention.

[0022] Figure 7 This utility model Figure 6 A magnified three-dimensional structural diagram of A in the middle.

[0023] In the diagram: 1. Valve seat; 2. Drive module; 3. Rotating rod; 4. Base plate; 5. Panel; 6. Guide plate; 7. Buffer plate; 8. First sealing groove; 9. Sealing gasket; 10. First threaded rod; 11. First threaded groove; 12. Protective plate; 13. Telescopic rod; 14. Shock-absorbing spring; 15. Second threaded rod. 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] Example 1: Please refer to Figures 1-7 The present invention provides the following technical solution: a double eccentric butterfly valve with high sealing performance and convenient opening and closing, including a valve seat 1, a rotating rod 3 rotatably connected inside the valve seat 1, a drive module 2 installed at the end of the rotating rod 3, and a base plate 4 installed on the outer wall of the rotating rod 3; a first sealing groove 8 is provided on the side of the base plate 4 away from the rotating rod 3, a sealing gasket 9 is movably abutted inside the first sealing groove 8, a panel 5 is movably abutted on one side of the sealing gasket 9, a second sealing groove is provided on the panel 5 corresponding to the position of the sealing gasket 9; a protective plate 12 is movably abutted on one side of the panel 5, a first threaded rod 10 is slidably connected inside the protective plate 12, a first threaded groove 11 is provided inside both the panel 5 and the base plate 4, and the first threaded rod 10 is threadedly connected inside the first threaded groove 11.

[0026] When installing the sealing gasket 9, firstly, the sealing gasket 9 is inserted into the first sealing groove 8 on the base plate 4, so that the sealing gasket 9 and the first sealing groove 8 are tightly engaged. Then, the second sealing groove on the panel 5 is attached to the sealing gasket 9, so that the sealing gasket 9 and the panel 5 are tightly engaged. Then, the protective plate 12 is attached to the panel 5. Since the protective plate 12 has a first threaded rod 10 slidably connected inside, and the panel 5 and the base plate 4 both have first threaded grooves 11 inside, inserting the first threaded rod 10 into the protective plate 12 and screwing it into the first threaded groove 11 can tightly connect the panel 5, the protective plate 12 and the base plate 4 together, making the entire valve structure more stable. At the same time, it also helps to maintain the sealing state of the sealing gasket 9 and further enhances the valve's sealing performance. The drive module 2 drives the rotating rod 3 to rotate, thereby causing the rotating rod 3 to drive the base plate 4 to rotate, thus opening the valve and facilitating the opening and closing of the valve.

[0027] Example 2: Based on Example 1, a guide plate 6 mechanism is also disclosed, the specific structure of which is as follows:

[0028] A guide plate 6 is installed on one side of the protective plate 12. A buffer plate 7 is slidably connected inside the guide plate 6. A shock-absorbing spring 14 is installed on the side of the buffer plate 7 near the protective plate 12. One end of the shock-absorbing spring 14 is installed on the protective plate 12. A second threaded rod 15 is slidably connected inside the buffer plate 7. A telescopic rod 13 is fixedly connected to the outer wall of one end of the second threaded rod 15. The end of the telescopic rod 13 is fixedly connected to the buffer plate 7. The second threaded rod 15 is threadedly connected to the inside of the protective plate 12. An O-ring is installed on the outer ring of the buffer plate 7. The sealing gasket 9 is T-shaped.

[0029] By installing a guide plate 6 on one side of the protective plate 12, when the rotating rod 3 drives the base plate 4 to rotate, i.e., when the valve is opened or closed, the water flow is guided by the guide plate 6, which can effectively prevent the water flow from directly impacting the protective plate 12. A buffer plate 7 is slidably connected inside the guide plate 6. A shock-absorbing spring 14 is installed on the side of the buffer plate 7 near the protective plate 12. When the valve is subjected to external impact or pressure changes, the buffer plate 7 will slide inside the guide plate 6, compressing the shock-absorbing spring 14. The elastic deformation of the shock-absorbing spring 14 can absorb and buffer the impact force, reducing damage to the internal structure of the valve and protecting the valve's sealing performance and normal operation. A second threaded rod 15 is slidably connected inside the buffer plate 7. A telescopic rod 13 is fixedly connected to the outer wall of one end of the second threaded rod 15. The end of the telescopic rod 13 is fixedly connected to the buffer plate 7. The second threaded rod 15 is threadedly connected inside the protective plate 12. When plate 7 is impacted by water flow, the water flow first contacts buffer plate 7, at which point buffer plate 7 is compressed. Buffer plate 7 drives the telescopic end of telescopic rod 13 to slide synchronously on the second threaded rod 15, thereby adjusting the distance between buffer plate 7 and protective plate 12. At the same time, buffer plate 7 drives the shock-absorbing spring 14 to compress. During this process, shock-absorbing spring 14 absorbs part of the impact force, preventing the water flow from directly impacting protective plate 12 and affecting the sealing gasket 9 between panel 5 and bottom plate 4. The buffering effect of buffer plate 7 can be flexibly adjusted according to the actual working conditions and the degree of impact, allowing the valve to better adapt to different working environments. An O-ring is installed on the outer ring of buffer plate 7, which can further enhance the sealing between buffer plate 7 and surrounding components, preventing the medium from leaking from the outer ring of buffer plate 7. Together with other sealing structures of the valve, it improves the overall sealing performance of the valve.

[0030] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0031] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A double eccentric butterfly valve with high sealing performance and convenient opening and closing, comprising a valve seat (1), characterized in that: The valve seat (1) is rotatably connected to a rotating rod (3), a drive module (2) is installed at the end of the rotating rod (3), and a base plate (4) is installed on the outer wall of the rotating rod (3). The base plate (4) has a first sealing groove (8) on the side away from the rotating rod (3). The first sealing groove (8) is movably abutted against a sealing gasket (9). The sealing gasket (9) is movably abutted against a panel (5) on one side. The panel (5) has a second sealing groove corresponding to the position of the sealing gasket (9).

2. The double eccentric butterfly valve with high sealing performance and convenient opening and closing as described in claim 1, characterized in that: The panel (5) is movably abutted against a protective plate (12) on one side. A first threaded rod (10) is slidably connected inside the protective plate (12). The panel (5) and the base plate (4) are both provided with a first threaded groove (11). The first threaded rod (10) is threadedly connected to the inside of the first threaded groove (11).

3. The double eccentric butterfly valve with high sealing performance and convenient opening and closing as described in claim 2, characterized in that: A guide plate (6) is installed on one side of the protective plate (12), and a buffer plate (7) is slidably connected inside the guide plate (6). A shock-absorbing spring (14) is installed on the side of the buffer plate (7) near the protective plate (12), and one end of the shock-absorbing spring (14) is installed on the protective plate (12).

4. The double eccentric butterfly valve with high sealing performance and convenient opening and closing according to claim 3, characterized in that: The buffer plate (7) is internally slidably connected to a second threaded rod (15), and a telescopic rod (13) is fixedly connected to the outer wall of one end of the second threaded rod (15). The end of the telescopic rod (13) is fixedly connected to the buffer plate (7), and the second threaded rod (15) is threadedly connected to the inside of the protective plate (12).

5. A convenient double eccentric butterfly valve with high sealing performance as described in claim 3, characterized in that: The outer ring of the buffer plate (7) is fitted with an O-ring.

6. The double eccentric butterfly valve with high sealing performance and convenient opening and closing according to claim 1, characterized in that: The sealing gasket (9) is T-shaped.

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