Soft sealing flange butterfly valve with elastic structure

Abstract

The utility model discloses a soft sealing flange butterfly valve with elastic structure relates to flange butterfly valve technical field, and it is characterized by the following: the valve seat's both ends symmetry fixedly connected with connecting structure, the outer wall fixedly connected with sealing structure of connecting structure, the sealing structure includes sealing block, the sealing block fixedly connected with sealing gasket on the side away from connecting structure, the outer wall of sealing block is equipped with stable groove, the sealing block fixedly connected with sealing rod and sealing spring on the side close to connecting structure, along with connecting bolt tight, and the pipeline flange extrusion rubber material's sealing gasket produces elastic deformation, can closely fill the tiny concave and convex of flange end surface, and sealing spring can release the elastic potential energy of storage when the slight wear of sealing gasket appears, and the sealing block is removed to the direction away from connecting structure, and drives sealing gasket automatic compensation wear gap.

Description

Technical Field

[0001] This utility model relates to the field of flange butterfly valve technology, specifically to a soft-seal flange butterfly valve with an elastic structure. Background Technology

[0002] In fields such as municipal sewage transportation, industrial wastewater treatment, and mining slurry transportation, flange butterfly valves are core components for controlling fluid flow, and their operational stability directly affects the transportation efficiency and maintenance costs of the entire pipeline system.

[0003] Traditional soft-seal flange butterfly valves mostly use rigid connections or simple elastic fit designs for their sealing structure. These structures lack self-adaptive compensation capabilities, and after prolonged use, gaps can appear in the sealing gaskets due to wear, leading to easy leakage. Therefore, this utility model was developed to address these problems. Utility Model Content

[0004] To address the shortcomings of existing technologies, the technical solution adopted by this utility model to solve its technical problems is: a soft-seal flange butterfly valve with an elastic structure, comprising: a valve seat, with connecting structures symmetrically fixedly connected to both ends of the valve seat, a sealing structure fixedly connected to the outer wall of the connecting structure, the sealing structure including a sealing block, a sealing gasket fixedly connected to the side of the sealing block away from the connecting structure, a stabilizing groove formed on the outer wall of the sealing block, and a sealing rod and a sealing spring fixedly connected to the side of the sealing block near the connecting structure.

[0005] Preferably, the sealing rod passes through the sealing spring and extends to both sides, and the sealing gasket is made of rubber.

[0006] Preferably, a valve stem is fixedly connected to the top of the valve seat, and a rotating wheel is fixedly connected to the top of the valve stem.

[0007] Preferably, the connecting structure includes a connecting plate, and the outer wall of the connecting plate is provided with a groove and a connecting hole.

[0008] Preferably, the inner wall of the chute has a sliding hole, and a stabilizing block is fixedly connected to the inner wall of the chute.

[0009] Preferably, the outer wall of the stabilizing block is slidably connected to the inner wall of the stabilizing groove, the inner wall of the stabilizing groove is fixedly connected to the end of the sealing spring away from the sealing block, and the inner wall of the sliding hole is slidably connected to the outer wall of the sealing rod.

[0010] The beneficial effects of this utility model are as follows:

[0011] 1. This utility model, by setting a sealing structure, allows the rubber sealing gasket of the pipe flange to undergo elastic deformation as the connecting bolts are tightened. This deformation tightly fills the tiny unevenness of the flange end face. When the sealing gasket experiences slight wear, the sealing spring releases its stored elastic potential energy, pushing the sealing block to move away from the connecting structure. This causes the sealing gasket to automatically compensate for the wear gap and maintain a tight fit with the pipe flange.

[0012] 2. By setting up a connecting structure, the sliding groove of the connecting plate provides stable space for the movement of the sealing structure. At the same time, the design of the sealing rod passing through the sealing spring can prevent the sealing spring from tilting during compression or reset, further ensuring the overall stability of the sealing structure and ensuring a continuous and reliable sealing effect. Attached Figure Description

[0013] Figure 1 This is the front view of this utility model;

[0014] Figure 2 This is a schematic diagram of the sealing structure of this utility model;

[0015] Figure 3 This is a schematic diagram of the connection structure of this utility model.

[0016] In the diagram: 1. Valve seat; 2. Connecting structure; 3. Sealing structure; 4. Valve stem; 5. Rotary wheel; 21. Connecting plate; 22. Connecting hole; 23. Slide groove; 24. Slide hole; 25. Stabilizing block; 31. Sealing block; 32. Stabilizing groove; 33. Sealing gasket; 34. Sealing rod; 35. Sealing spring. Detailed Implementation

[0017] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments. The embodiments of the present invention are given for illustrative and descriptive purposes only, and are not intended to be exhaustive or to limit the present invention to the disclosed forms. Many modifications and variations will be apparent to those skilled in the art. The embodiments were chosen and described to better illustrate the principles and practical applications of the present invention, and to enable those skilled in the art to understand the present invention and design various embodiments with various modifications suitable for a particular purpose.

[0018] Example:

[0019] Please see Figure 1 - Figure 2This utility model provides a technical solution: a soft-seal flange butterfly valve with an elastic structure, comprising: a valve seat 1, with connecting structures 2 symmetrically fixedly connected to both ends of the valve seat 1, and a sealing structure 3 fixedly connected to the outer wall of the connecting structures 2. The sealing structure 3 includes a sealing block 31, a sealing gasket 33 fixedly connected to the side of the sealing block 31 away from the connecting structures 2, a stabilizing groove 32 formed on the outer wall of the sealing block 31, and a sealing rod 34 and a sealing spring 35 fixedly connected to the side of the sealing block 31 near the connecting structures 2. The sealing rod 34 passes through the sealing spring 35 and extends to both sides. The sealing gasket 33 is made of rubber. A valve stem 4 is fixedly connected to the top of the valve seat 1, and a rotating wheel 5 is fixedly connected to the top of the valve stem 4. When it is necessary to connect the soft-seal flange butterfly valve to an external pipeline, first align the connecting structures 2 at both ends of the valve seat 1 with the pipeline flange, ensuring that the connecting holes 22 on the connecting plate 21 correspond to the mounting holes of the pipeline flange. At this time, under the pre-tightening force of the sealing spring 35, the sealing block 31 in the sealing structure 3 pushes the sealing gasket 33 closer to the end face of the pipeline flange. As the connecting bolts pass through the connecting hole 22 and are gradually tightened, the pipe flange compresses the sealing gasket 33. The rubber sealing gasket 33 undergoes elastic deformation, tightly fitting the pipe flange end face, thus initially achieving a seal. Simultaneously, the sealing block 31 moves closer to the connecting structure 2, causing the sealing rod 34 to slide along the inner wall of the sliding hole 24. The sealing spring 35 is further compressed and stores elastic potential energy. The stabilizing groove 32 slides along the outer wall of the stabilizing block 25, ensuring the stability of the sealing block 31 during movement and preventing displacement that could affect the sealing effect. After the connecting bolts are fully tightened, the elastic force of the sealing spring 35 continues to act on the sealing block 31, ensuring that the sealing gasket 33 always maintains tight contact with the pipe flange, ensuring a reliable seal. If it is necessary to open or close the valve subsequently, rotating the rotary wheel 5 causes the valve stem 4 to rotate, which in turn drives the butterfly plate inside the valve seat 1 to rotate, achieving fluid flow control.

[0020] Please see Figure 3The connecting structure 2 includes a connecting plate 21. The outer wall of the connecting plate 21 has a sliding groove 23 and a connecting hole 22. The inner wall of the sliding groove 23 has a sliding hole 24. A stabilizing block 25 is fixedly connected to the inner wall of the sliding groove 23. The outer wall of the stabilizing block 25 is slidably connected to the inner wall of the stabilizing groove 32. The inner wall of the stabilizing groove 32 is fixedly connected to the end of the sealing spring 35 away from the sealing block 31. The inner wall of the sliding hole 24 is slidably connected to the outer wall of the sealing rod 34. During daily operation and maintenance of the valve, if the fluid pressure in the pipeline fluctuates or the sealing components experience slight wear after long-term use, the sealing structure 3 can adaptively compensate through its own elastic structure. When the pipeline pressure increases, the fluid exerts additional pressure on the sealing gasket 33, causing further deformation of the sealing gasket 33. Simultaneously, the sealing block 31 moves towards the connecting structure 2 under pressure, the sealing rod 34 slides along the inner wall of the sliding hole 24, and the sealing spring 35 is compressed. The elastic reaction force of the spring offsets part of the pressure, preventing excessive deformation and damage to the sealing gasket 33. The sliding fit between the stabilizing groove 32 and the stabilizing block 25 ensures that the sealing block 31 does not rotate circumferentially when it moves, maintaining the accuracy of the sealing position. If the sealing gasket 33 experiences slight wear, the sealing spring 35 will release its stored elastic potential energy, pushing the sealing block 31 away from the connecting structure 2, causing the sealing gasket 33 to compensate for the wear gap and maintain a tight fit with the pipe flange. When it is necessary to disassemble the valve, loosen the connecting bolts passing through the connecting hole 22, the sealing spring 35 pushes the sealing block 31 to reset, and the sealing rod 34 slides along the sliding hole 24, facilitating the separation of the valve from the pipeline. Throughout the process, the sliding groove 23 of the connecting plate 21 provides stable space for the movement of the sealing structure 3, ensuring smooth operation.

[0021] Working principle:

[0022] When using this soft-seal flange butterfly valve, to connect it to an external pipeline, first align the connecting structures 2 at both ends of the valve seat 1 with the pipeline flange, ensuring that the connecting holes 22 on the connecting plate 21 correspond to the mounting holes on the pipeline flange. At this time, under the preload of the sealing spring 35, the sealing block 31 in the sealing structure 3 pushes the sealing gasket 33 closer to the pipeline flange end face. As the connecting bolts pass through the connecting holes 22 and are gradually tightened, the pipeline flange compresses the sealing gasket 33, causing the rubber sealing gasket 33 to undergo elastic deformation and tightly adhere to the pipeline flange end face, achieving initial sealing. Simultaneously, the sealing block 31 moves closer to the connecting structure 2, causing the sealing rod 34 to slide along the inner wall of the sliding hole 24, further compressing and storing elastic potential energy in the sealing spring 35. The stabilizing groove 32 slides along the outer wall of the stabilizing block 25, ensuring the stability of the sealing block 31 during movement and preventing displacement that could affect the sealing effect. After the connecting bolts are fully tightened, the elastic force of the sealing spring 35 continues to act on the sealing block 31, ensuring that the sealing gasket 33 always maintains tight contact with the pipe flange and ensuring reliable sealing. If the valve needs to be opened or closed subsequently, rotating the rotary wheel 5 causes the valve stem 4 to rotate, which in turn drives the butterfly plate inside the valve seat 1 to rotate, thus controlling the flow. During daily operation and maintenance of the valve, if the fluid pressure in the pipeline fluctuates or the sealing components experience slight wear after long-term use, the sealing structure 3 can adaptively compensate through its own elastic structure. When the pipeline pressure increases, the fluid exerts additional pressure on the sealing gasket 33, causing further deformation. Simultaneously, the sealing block 31 moves towards the connecting structure 2 under pressure, and the sealing rod 34 slides along the inner wall of the sliding hole 24. The sealing spring 35 is compressed, and the elastic reaction force of the spring offsets some of the pressure, preventing excessive deformation and damage to the sealing gasket 33. The sliding fit between the stabilizing groove 32 and the stabilizing block 25 ensures that the sealing block 31 does not rotate circumferentially during movement, maintaining the accuracy of the sealing position. If the sealing gasket 33 experiences slight wear, the sealing spring 35 will release its stored elastic potential energy, pushing the sealing block 31 away from the connecting structure 2. This will cause the sealing gasket 33 to compensate for the wear gap and maintain a tight fit with the pipe flange. When the valve needs to be disassembled, the connecting bolts passing through the connecting hole 22 are loosened. The sealing spring 35 pushes the sealing block 31 back to its original position, and the sealing rod 34 slides along the sliding hole 24, facilitating the separation of the valve from the pipeline. Throughout the process, the sliding groove 23 of the connecting plate 21 provides stable space for the movement of the sealing structure 3, ensuring smooth operation.

[0023] Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. All other embodiments obtained by those skilled in the art and related fields based on the embodiments of this utility model without creative effort should fall within the protection scope of this utility model. Structures, devices, and operating methods not specifically described and explained in this utility model, unless otherwise specified or limited, shall be implemented according to conventional means in the art.

Claims

1. A soft sealing wafer valve with elastic structure of flange, comprising a valve seat (1), characterized in that: The valve seat (1) is symmetrically fixedly connected to two ends by a connecting structure (2), and a sealing structure (3) is fixedly connected to the outer wall of the connecting structure (2); The sealing structure (3) includes a sealing block (31), a sealing gasket (33) is fixedly connected to the side of the sealing block (31) away from the connecting structure (2), a stabilizing groove (32) is provided on the outer wall of the sealing block (31), and a sealing rod (34) and a sealing spring (35) are fixedly connected to the side of the sealing block (31) close to the connecting structure (2).

2. The soft-seal flange butterfly valve with an elastic structure according to claim 1, characterized in that: The sealing rod (34) passes through the sealing spring (35) and extends to both sides, and the sealing gasket (33) is made of rubber.

3. The soft seal butterfly valve with elastic structure according to claim 1, characterized in that: A valve stem (4) is fixedly connected to the top of the valve seat (1), and a rotating wheel (5) is fixedly connected to the top of the valve stem (4).

4. A soft-seal flange butterfly valve with an elastic structure according to claim 1, characterized in that: The connection structure (2) includes a connecting plate (21), and the outer wall of the connecting plate (21) is provided with a sliding groove (23) and a connecting hole (22).

5. The soft seal butterfly valve with elastic structure according to claim 4, characterized in that: The inner wall of the slide groove (23) is provided with a sliding hole (24), and a stabilizing block (25) is fixedly connected to the inner wall of the slide groove (23).

6. A soft-seal flange butterfly valve with an elastic structure according to claim 5, characterized in that: The outer wall of the stabilizing block (25) is slidably connected to the inner wall of the stabilizing groove (32), the inner wall of the stabilizing groove (32) is fixedly connected to the end of the sealing spring (35) away from the sealing block (31), and the inner wall of the sliding hole (24) is slidably connected to the outer wall of the sealing rod (34).

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