Dynamic sealing structure of butterfly valve

Abstract

The utility model discloses a dynamic sealing structure of a butterfly valve, and relates to the technical field of dynamic sealing structures of butterfly valves, in particular to the dynamic sealing structure of the butterfly valve, which comprises a valve seat and a dynamic sealing ring, the top of the valve seat is fixedly connected with a top support, and the bottom of the valve seat is fixedly connected with a bottom support. Mounting blocks are fixedly mounted on the two sides of the top support and the two sides of the bottom support, fixing holes are formed in the front faces of the mounting blocks, sealing plates are fixedly mounted on the inner sides of the dynamic sealing rings, through holes are formed in the dynamic sealing rings, threaded columns are rotationally connected to the top of the top support and the bottom of the bottom support, and rotating columns are fixedly connected to the bottoms of the threaded columns. A first sealing piece and a second sealing piece are in threaded connection with the ends of the upper threaded column and the lower threaded column correspondingly, threaded grooves are formed in the first sealing piece and the second sealing piece, an adaptive adjusting mechanism is arranged outside the rotating column, and the sealing effect of the interior can be adjusted conveniently due to the arrangement of the sealing pieces; and the arrangement of the adaptive adjusting mechanism can effectively avoid mistaken touch rotation.

Description

Technical Field

[0001] This utility model relates to the technical field of dynamic sealing structure of butterfly valves, specifically a dynamic sealing structure for butterfly valves. Background Technology

[0002] A butterfly valve, also known as a flap valve, is a simple regulating valve used for on / off control of low-pressure pipeline media. A butterfly valve is characterized by its closing element (valve disc or butterfly plate) being a disk that rotates around a valve shaft to open and close. It can be used to control the flow of various types of fluids, including air, water, steam, various corrosive media, mud, oil, liquid metals, and radioactive media. In pipelines, it primarily functions as a shut-off and throttling device. The butterfly valve's opening and closing element is a disc-shaped butterfly plate that rotates around its own axis within the valve body, thereby achieving the purpose of opening, closing, or regulation.

[0003] A butterfly valve dynamic sealing structure disclosed in Chinese Utility Model Patent Application Publication CN221990960U has advantages such as achieving dynamic sealing of the butterfly plate. However, it also has some drawbacks: First, in actual use, the butterfly plate is frequently opened and closed, which can easily cause wear on the sealing ring, further affecting the sealing effect. Second, the rotating handle at the top of the butterfly valve is fixed at the top. In actual use, the handle may be accidentally activated due to its external position, causing the butterfly valve to open and affecting the sealing effect. Utility Model Content

[0004] (a) Technical problems to be solved

[0005] To address the shortcomings of existing technologies, this utility model provides a dynamic sealing structure for a butterfly valve, which solves the problems mentioned in the background section.

[0006] (II) Technical Solution

[0007] To achieve the above objectives, this utility model provides the following technical solution: a dynamic sealing structure for a butterfly valve, comprising a valve seat and a dynamic sealing ring. A top bracket is fixedly connected to the top of the valve seat, and a bottom bracket is fixedly connected to the bottom of the valve seat. Mounting blocks are fixedly installed on both sides of the top and bottom brackets. A fixing hole is provided on the front of the mounting block. A sealing plate is fixedly installed on the inner side of the dynamic sealing ring. A through hole is provided on the dynamic sealing ring. Threaded columns are rotatably connected to the top of the top bracket and the bottom of the bottom bracket. A rotating column is fixedly connected to the bottom of the threaded columns. A first sealing element and a second sealing element are threadedly connected to the ends of the upper and lower threaded columns, respectively. Threaded grooves are provided inside the first and second sealing elements. Through grooves are provided inside the top and bottom brackets. An adaptation adjustment mechanism is provided outside the rotating column.

[0008] Optionally, the valve seat is circular in shape, the dynamic sealing ring and the valve seat are aligned at the same center, the valve seat is fitted over the outside of the dynamic sealing ring, the width of the dynamic sealing ring is greater than the width of the valve seat and the front and rear ends protrude outwards symmetrically.

[0009] Optionally, the top bracket and the bottom bracket are installed symmetrically from top to bottom, and the top bracket and the bottom bracket are the same size. The two mounting blocks are installed symmetrically from left to right on the left and right sides of the top bracket and the bottom bracket, and the fixing holes penetrate the entire mounting blocks from front to back.

[0010] Optionally, the inner diameter surface of the dynamic sealing ring is provided with several notches, the sealing plate is located at the inner diameter notch of the dynamic sealing ring, the sealing plate is a plurality of evenly distributed and circumferentially distributed on the inner diameter of the dynamic sealing ring, and the through hole penetrates the entire dynamic sealing ring from top to bottom.

[0011] Optionally, the threaded post is adapted to the threaded groove and can be threadedly connected inside it. The size of the through groove is adapted to the size of the first seal and the second seal. The first seal and the second seal can slide up and down inside the through groove. The through groove communicates with the through hole.

[0012] Optionally, the adapter adjustment mechanism includes a mounting sleeve, an adapter hole, a rotating assembly, an adapter groove, and a handle. The mounting sleeve is disposed on the top of the top bracket and the bottom of the bottom bracket. The adapter hole is opened on the inner side of the mounting sleeve and is fitted onto the outer side of the rotating column. The adapter groove is opened on the bottom of the rotating assembly and is fitted to the size of the rotating column. The rotating assembly is fitted onto the top of the rotating column through the adapter groove. The handle is fixedly connected to the outer side of the rotating assembly.

[0013] This utility model provides a dynamic sealing structure for a butterfly valve, which has the following advantages:

[0014] 1. The dynamic sealing structure of this butterfly valve, through the setting of the bracket, makes the dynamic sealing structure of the butterfly valve easy to install and use. Through the cooperation of the threaded column and the sealing element, the sealing element can be adjusted by the threaded column and the external handle during use, thereby facilitating the adjustment of the sealing element position and improving work efficiency.

[0015] 2. The dynamic sealing structure of this butterfly valve, through the setting of the dynamic sealing ring, enables the butterfly valve to achieve a dynamic sealing effect. By cooperating with the rotating component of the rotating column and the handle, the rotating column can be rotated by the rotating component at the end of the handle during use, thereby facilitating rotation, saving time and effort, and avoiding accidental operation. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0017] Figure 2 This is a schematic diagram of the main structure of this utility model;

[0018] Figure 3 This is a side view of the structure of this utility model;

[0019] Figure 4 This is a schematic diagram of the main sectional view of the present invention;

[0020] Figure 5 This is a schematic diagram of the sealing inner ring structure of this utility model.

[0021] In the diagram: 1. Valve seat; 2. Dynamic sealing ring; 3. Top bracket; 4. Bottom bracket; 5. Mounting block; 6. Fixing hole; 7. Sealing plate; 8. Through hole; 9. Threaded post; 10. Rotating post; 11. First seal; 12. Second seal; 13. Threaded groove; 14. Through groove; 15. Mounting sleeve; 16. Adapter hole; 17. Rotating assembly; 18. Adapter groove; 19. Handle. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0023] Example 1:

[0024] Please see Figures 1 to 5This utility model provides a technical solution: a dynamic sealing structure for a butterfly valve, including a valve seat 1 and a dynamic sealing ring 2. The valve seat 1 is circular, and the dynamic sealing ring 2 is centered on the valve seat 1. The valve seat 1 is fitted onto the outside of the dynamic sealing ring 2. The width of the dynamic sealing ring 2 is greater than the width of the valve seat 1, and both ends of the dynamic sealing ring 2 symmetrically protrude outwards. The dynamic sealing ring 2 effectively enhances the sealing effect of the internal butterfly plate. A top bracket 3 is fixedly connected to the top of the valve seat 1, and a bottom bracket 4 is fixedly connected to the bottom of the valve seat 1. Mounting blocks 5 are fixedly installed on both sides of the top bracket 3 and the bottom bracket 4. The top bracket 3 and the bottom bracket 4 are symmetrically installed vertically, and their sizes are the same. The two mounting blocks 5 are symmetrically installed on the left and right sides of the top bracket 3 and the bottom bracket 4. Fixing holes 6 penetrate the entire mounting block 5 from front to back. The arrangement of the top bracket 3 and the bottom bracket 4, together with the mounting blocks 5, ensures that the entire device is easy to install and connect. An opening is made on the front of the mounting block 5. A sealing plate 7 is fixedly installed on the inner side of the dynamic sealing ring 2 with a fixing hole 6. Several notches are opened on the inner diameter surface of the dynamic sealing ring 2. The sealing plate 7 is located at the notch of the inner diameter of the dynamic sealing ring 2. The sealing plates 7 are evenly distributed on the inner diameter of the dynamic sealing ring 2. The through hole 8 runs through the entire dynamic sealing ring 2 from top to bottom. The dynamic sealing ring 2 has a through hole 8. Threaded columns 9 are rotatably connected to the top of the top bracket 3 and the bottom of the bottom bracket 4. A rotating column 10 is fixedly connected to the bottom of the threaded column 9. The ends of the upper and lower threaded columns 9 are respectively threaded with a first sealing element 11 and a second sealing element 12. The threaded column 9 is adapted to the threaded groove 13 and can be threaded inside it. The size of the through groove 14 is adapted to the size of the first sealing element 11 and the second sealing element 12. The first sealing element 11 and the second sealing element 12 can slide up and down inside the through groove 14. The through groove 14 is connected to the through hole 8. The setting of the threaded column 9 in conjunction with the first sealing element 11 and the second sealing element 12 can facilitate the enhancement of the internal sealing effect.

[0025] When using this butterfly valve's dynamic sealing structure, first install the dynamic sealing ring 2 inside the valve seat 1, connecting the butterfly plate inside the valve seat 1 with the sealing plate 7 on the inner diameter of the dynamic sealing ring 2. Then, fix the valve seat 1 as a whole through the fixing hole 6 on the mounting block 5 before use. During use, the adapter adjustment mechanism can be installed on the top bracket 3 and the bottom bracket 4. The adapter adjustment mechanism drives the rotating column 10 to rotate, which in turn drives the threaded column 9 to rotate, thereby causing the first sealing element 11 and the second sealing element 12 to move towards the inner center of the valve seat 1, thus increasing the internal sealing effect of the first sealing element 11 and the second sealing element 12. After adjustment, the adapter adjustment mechanism can be removed to avoid accidental contact during other operations. It is very convenient and easy to use.

[0026] Example 2:

[0027] Please see Figures 1 to 5 This utility model provides a technical solution: a dynamic sealing structure for a butterfly valve. The first sealing element 11 and the second sealing element 12 have threaded grooves 13 inside. The top support 3 and the bottom support 4 have through grooves 14 inside. An adaptation adjustment mechanism is provided on the outside of the rotating column 10. The adaptation adjustment mechanism includes a mounting sleeve 15, an adaptation hole 16, a rotating assembly 17, an adaptation groove 18, and a handle 19. The mounting sleeve 15 is located on the top of the top support 3 and the bottom of the bottom support 4. The adaptation hole 16 is located on the inner side of the mounting sleeve 15 and is adapted to fit the rotating column 10 on its outside. The adaptation groove 18 is located on the bottom of the rotating assembly 17 and is adapted to the size of the rotating column 10. The rotating assembly 17 is fitted onto the top of the rotating column 10 through the adaptation groove 18. The handle 19 is fixedly connected to the outer side of the rotating assembly 17. The adaptation adjustment mechanism facilitates the adjustment and installation of the internal mechanism.

[0028] When using this butterfly valve's dynamic sealing structure, if the internal first seal 11 and second seal 12 need to be adjusted after a period of use, the mounting sleeve 15 can be fitted onto the outside of the rotating column 10 through the adapter hole 16 on the inner side, causing the rotating column 10 to protrude outwards. Then, the rotating assembly 17 can be snapped onto the outside of the rotating column 10 through the adapter groove 18. Subsequently, the rotating assembly 17 can be rotated by the handle 19 to drive the rotating column 10 to rotate, thereby adjusting the first seal 11 and second seal 12. It is very convenient and easy to use.

[0029] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A dynamic sealing structure for a butterfly valve, comprising a valve seat (1) and a dynamic sealing ring (2), characterized in that: A top bracket (3) is fixedly connected to the top of the valve seat (1), and a bottom bracket (4) is fixedly connected to the bottom of the valve seat (1). Mounting blocks (5) are fixedly installed on both sides of the top bracket (3) and the bottom bracket (4). A fixing hole (6) is opened on the front of the mounting block (5). A sealing plate (7) is fixedly installed on the inner side of the dynamic sealing ring (2). A through hole (8) is opened on the dynamic sealing ring (2). A threaded column (9) is rotatably connected to the top of the top bracket (3) and the bottom of the bottom bracket (4). A rotating column (10) is fixedly connected to the bottom of the threaded column (9). A first sealing element (11) and a second sealing element (12) are threadedly connected to the ends of the upper and lower threaded columns (9), respectively. A threaded groove (13) is opened inside the first sealing element (11) and the second sealing element (12). A through groove (14) is opened inside the top bracket (3) and the bottom bracket (4). An adaptation adjustment mechanism is provided on the outside of the rotating column (10).

2. The dynamic sealing structure of a butterfly valve according to claim 1, characterized in that: The valve seat (1) is circular in shape. The dynamic sealing ring (2) and the valve seat (1) are set at the same center. The valve seat (1) is sleeved on the outside of the dynamic sealing ring (2). The width of the dynamic sealing ring (2) is greater than the width of the valve seat (1) and the front and rear ends protrude outward symmetrically.

3. The dynamic sealing structure of a butterfly valve according to claim 1, characterized in that: The top bracket (3) and the bottom bracket (4) are installed symmetrically from top to bottom. The top bracket (3) and the bottom bracket (4) are the same size. The two mounting blocks (5) are installed symmetrically from left to right on the left and right sides of the top bracket (3) and the bottom bracket (4). The fixing hole (6) runs through the entire mounting block (5) from front to back.

4. The dynamic sealing structure of a butterfly valve according to claim 1, characterized in that: The inner diameter surface of the dynamic sealing ring (2) has several notches. The sealing plate (7) is located at the inner diameter notch of the dynamic sealing ring (2). The sealing plate (7) is a plurality of evenly distributed and circumferentially distributed on the inner diameter of the dynamic sealing ring (2). The through hole (8) penetrates the entire dynamic sealing ring (2) from top to bottom.

5. The dynamic sealing structure of a butterfly valve according to claim 1, characterized in that: The threaded post (9) is adapted to the threaded groove (13) and can be threadedly connected inside it. The size of the through groove (14) is adapted to the size of the first seal (11) and the second seal (12). The first seal (11) and the second seal (12) can slide up and down inside the through groove (14). The through groove (14) is connected to the through hole (8).

6. The dynamic sealing structure of a butterfly valve according to claim 1, characterized in that: The adapter adjustment mechanism includes a mounting sleeve (15), an adapter hole (16), a rotating assembly (17), an adapter groove (18), and a handle (19). The mounting sleeve (15) is set on the top of the top bracket (3) and the bottom of the bottom bracket (4). The adapter hole (16) is opened on the inner side of the mounting sleeve (15) and is adapted to fit the rotating column (10) on its outer side. The adapter groove (18) is opened on the bottom of the rotating assembly (17). The size of the adapter groove (18) is adapted to the size of the rotating column (10). The rotating assembly (17) is sleeved on the top of the rotating column (10) through the adapter groove (18). The handle (19) is fixedly connected to the outer side of the rotating assembly (17).

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