CN223447666U - A valve plate sealing assembly for a flange butterfly valve - Google Patents
A valve plate sealing assembly for a flange butterfly valveInfo
- Publication number
- CN223447666U CN223447666U CN202423083035.4U CN202423083035U CN223447666U CN 223447666 U CN223447666 U CN 223447666U CN 202423083035 U CN202423083035 U CN 202423083035U CN 223447666 U CN223447666 U CN 223447666U
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- CN
- China
- Prior art keywords
- valve
- valve plate
- sealing ring
- flexible sealing
- plate
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Abstract
The utility model discloses a valve plate sealing assembly of a flange butterfly valve, which comprises a valve plate arranged in a valve body in a rotating fit manner through a valve rod, wherein the valve plate is in sealing fit with a valve seat in the valve body, a flexible sealing ring close to the edge of the valve plate is coaxially arranged on the surface of the valve plate, the flexible sealing ring can expand and contract to deform, when the valve plate rotates to a valve opening position, the flexible sealing ring contracts to be retracted to the edge contour enclosing range of the valve plate, and when the valve plate rotates to a valve closing position, the flexible sealing ring expands and expands to be tightly attached to the valve seat, so that the valve plate and the flexible sealing ring form an axial double-sealing structure. According to the utility model, the flexible sealing ring is coaxially arranged on the valve plate, and can expand and expand to form an axial double-sealing structure with the valve plate in a valve closing state, so that the sealing performance is improved.
Description
Technical Field
The utility model belongs to the technical field of flange butterfly valves, and particularly relates to a valve plate sealing assembly of a flange butterfly valve.
Background
The valve plate of the flange butterfly valve can realize valve opening and closing control and flow control under the valve opening state through rotation of 0-90 degrees, is suitable for conveying fluid media, and is widely applied to the field of industrial production. In order to be suitable for a conveying environment with temperature and pressure requirements, the valve plate of the existing flange butterfly valve is generally made of a metal material, and due to the fact that the valve plate of the metal material is harder in texture, under the condition of long-time use friction, the tightness of the valve plate and a valve seat during matched sealing can slide downwards, and leakage or inaccurate flow control and the like can occur.
Disclosure of Invention
The utility model aims to overcome the defects in the prior art, and provides the valve plate sealing assembly of the flange butterfly valve, which is characterized in that the flexible sealing ring is coaxially arranged on the valve plate, and the flexible sealing ring can expand and expand to form an axial double-sealing structure with the valve plate in a valve closing state, so that the sealing performance is improved.
In order to achieve the purpose, the valve plate sealing assembly of the flange butterfly valve comprises a valve plate which is arranged in a valve body in a rotating fit manner through a valve rod, wherein a flange plate is arranged at an inlet and an outlet of the valve body, and the valve plate is in sealing fit with a valve seat in the valve body;
The plate surface of the valve plate is coaxially provided with a flexible sealing ring close to the edge of the plate body, and the flexible sealing ring can expand and contract and deform;
when the valve plate rotates to the valve opening position, the flexible sealing ring is contracted to be internally retracted into the edge contour enclosing range of the valve plate;
When the valve plate rotates to the valve closing position, the flexible sealing ring expands and expands to be tightly attached to the valve seat, so that the valve plate and the flexible sealing ring form an axial double-sealing structure.
The flexible sealing ring is arranged on the back surface of the valve plate, and is of a hollow flexible body structure, a through hole parallel to the axis of the valve plate is formed in the valve plate, and the flexible sealing ring on the back surface of the valve plate is communicated with the front surface area of the valve plate through the through hole;
when the valve plate rotates to the valve closing position, fluid medium in the front area of the valve plate enters the flexible sealing ring through the through holes, so that the flexible sealing ring is inflated and deformed through the entering and filling of the fluid medium.
Further, the flexible sealing ring is provided with interfaces at one side facing the valve plate, and the interfaces are communicated with the through holes in a one-to-one correspondence manner.
The flexible sealing ring is positioned in the annular cavity, and the flexible sealing ring is deformed and extended and guided through the annular cavity when the structure is deformed, so that the flexible sealing ring is expanded or contracted and deformed in the radial direction.
Further, the flexible sealing ring is a hollow annular rubber sealing ring.
Further, the back of the valve plate is movably connected with an installing piece, and the baffle plate is fixedly connected with the valve plate through the installing piece.
The flexible sealing ring is coaxially arranged on the valve plate, and can expand and expand to form an axial double-sealing structure with the valve plate in a valve closing state, so that the sealing performance is improved, leakage is avoided, the accuracy of flow control is ensured, and the flexible sealing ring 5 can shrink and shrink in the valve closing state, so that the flow blocking effect on fluid medium conveying is reduced.
Drawings
FIG. 1 is a schematic illustration of the structure of a valve stem, valve body, valve plate and flexible seal ring;
FIG. 2 is a schematic view of the semi-sectional structure of FIG. 1;
fig. 3 is an enlarged schematic view of the area a in fig. 2.
Detailed Description
The utility model will be further described with reference to the accompanying drawings.
The valve plate sealing assembly of the flange butterfly valve comprises a valve plate 3 which is installed in a valve body 2 through a valve rod 1 in a rotating fit mode, wherein a flange is arranged at an inlet and an outlet of the valve body 2, the valve plate 3 is in sealing fit with a valve seat 4 in the valve body 2, a flexible sealing ring 5 which is close to the edge of the valve plate body is coaxially arranged on the surface of the valve plate 3, the flexible sealing ring 5 can expand and contract in deformation, when the valve plate 3 rotates to a valve opening position, the flexible sealing ring 5 contracts to be retracted into the edge contour enclosing range of the valve plate 3, and when the valve plate 3 rotates to a valve closing position, the flexible sealing ring 5 expands to be tightly attached to the valve seat 4, so that an axial double-sealing structure is formed between the valve plate 3 and the flexible sealing ring 5. According to the utility model, the flexible sealing ring 5 is coaxially arranged on the valve plate 3, and the flexible sealing ring 5 can expand and expand to form an axial double-sealing structure with the valve plate 3 in a valve closing state, so that the sealing performance is improved, the leakage is avoided, the accuracy of flow control is ensured, and the flexible sealing ring 5 can shrink and shrink in the valve closing state, so that the flow blocking influence on the fluid medium conveying is reduced.
More specifically, as shown in fig. 2, the flexible sealing ring 5 is disposed at the back of the valve plate 3, and the flexible sealing ring 5 is in a hollow flexible body structure, the valve plate 3 is provided with a through hole 30 parallel to the axis of the valve plate 3, the flexible sealing ring 5 at the back of the valve plate 3 is conducted to the front area of the valve plate 3 through the through hole 30, when the valve plate 3 rotates to the valve closing position, fluid medium in the front area of the valve plate 3 enters the flexible sealing ring 5 through the through hole 30, so that the flexible sealing ring 5 is inflated and deformed through the entering and filling of the fluid medium. In the valve closing state, the front area of the valve plate 3 is in a positive pressure state due to the existence of the fluid medium, and the fluid medium is filled into the flexible sealing ring 5 through the through holes 30 based on the positive pressure working condition, so that the flexible sealing ring 5 is expanded and deformed to be attached to the valve seat 4, and sealing is realized. The expansion deformation of the flexible sealing ring 5 adopts a positive pressure fluid environment of the front area of the valve plate 3, an additional power mechanism is not needed, the structure is simpler, and the cost is lower.
As shown in fig. 3, the flexible sealing ring 5 has an interface 50 on a side facing the valve plate 3, and the interface 50 communicates with the through holes 30 in a one-to-one correspondence.
The utility model further comprises a baffle plate 6 coaxially arranged on the back of the valve plate 3, an annular cavity 7 with an opening at the outer side is formed between the baffle plate 6 and the valve plate 3 in a limiting way, the flexible sealing ring 5 is positioned in the annular cavity 7, and the flexible sealing ring 5 is subjected to deformation extension guiding through the annular cavity 7 when the structure is deformed, so that the flexible sealing ring 5 is expanded or contracted to deform in the radial direction, and the requirement that the flexible sealing ring 5 can be attached to the valve seat 4 under the condition of expansion is met.
In the present utility model, the flexible seal ring 5 is preferably a hollow annular rubber seal ring.
As shown in fig. 3, the back surface of the valve plate 3 is movably connected with a mounting member 8, the baffle 6 is fixedly connected with the valve plate 3 through the mounting member 8, and the mounting member 8 is preferably a screw.
The foregoing is merely a preferred embodiment of the present utility model and it should be noted that modifications and adaptations to those skilled in the art may be made without departing from the principles of the present utility model, which are intended to be comprehended within the scope of the present utility model.
Claims (6)
1. A valve plate sealing assembly of a flange butterfly valve comprises a valve plate (3) which is installed in a valve body (2) through a valve rod (1) in a rotating fit manner, wherein a flange plate is arranged at an inlet and an outlet of the valve body (2), and the valve plate (3) is in sealing fit with a valve seat (4) in the valve body (2);
The device is characterized in that a flexible sealing ring (5) close to the edge of a plate body is coaxially arranged on the plate surface of the valve plate (3), and the flexible sealing ring (5) can expand and contract to deform;
When the valve plate (3) rotates to a valve opening position, the flexible sealing ring (5) is contracted to be retracted into the edge contour enclosing range of the valve plate (3);
When the valve plate (3) rotates to a valve closing position, the flexible sealing ring (5) expands to be tightly attached to the valve seat (4), so that the valve plate (3) and the flexible sealing ring (5) form an axial double-sealing structure.
2. The valve plate sealing assembly of the flange butterfly valve of claim 1 is characterized in that the flexible sealing ring (5) is arranged on the back surface of the valve plate (3), and the flexible sealing ring (5) is of a hollow flexible body structure, a through hole (30) parallel to the axis of the valve plate (3) is formed in the valve plate (3), and the flexible sealing ring (5) on the back surface of the valve plate (3) is communicated with the front surface area of the valve plate (3) through the through hole (30);
when the valve plate (3) rotates to the valve closing position, fluid medium in the front area of the valve plate (3) enters the flexible sealing ring (5) through the through hole (30), so that the flexible sealing ring (5) is inflated and deformed through the entering and filling of the fluid medium.
3. A valve plate sealing assembly of a flange butterfly valve as claimed in claim 2, wherein the flexible sealing ring (5) is provided with interfaces (50) on one side facing the valve plate (3), and the interfaces (50) are communicated with the through holes (30) in a one-to-one correspondence.
4. The valve plate sealing assembly of the flange butterfly valve according to claim 2, further comprising a baffle plate (6) coaxially arranged on the back surface of the valve plate (3), wherein an annular cavity (7) with an opening at the outer side is formed between the baffle plate (6) and the valve plate (3), the flexible sealing ring (5) is positioned in the annular cavity (7), and the flexible sealing ring (5) is subjected to deformation extension guiding through the annular cavity (7) when subjected to structural deformation so as to expand or contract the deformation of the flexible sealing ring (5) in the radial direction.
5. A valve plate sealing assembly of a flange butterfly valve as claimed in claim 4, wherein the flexible sealing ring (5) is a hollow annular rubber sealing ring.
6. The valve plate sealing assembly of the flange butterfly valve of claim 4, wherein the back surface of the valve plate (3) is movably connected with a mounting piece (8), and the baffle plate (6) is fixedly connected with the valve plate (3) through the mounting piece (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202423083035.4U CN223447666U (en) | 2024-12-13 | 2024-12-13 | A valve plate sealing assembly for a flange butterfly valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202423083035.4U CN223447666U (en) | 2024-12-13 | 2024-12-13 | A valve plate sealing assembly for a flange butterfly valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN223447666U true CN223447666U (en) | 2025-10-17 |
Family
ID=97337049
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202423083035.4U Active CN223447666U (en) | 2024-12-13 | 2024-12-13 | A valve plate sealing assembly for a flange butterfly valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN223447666U (en) |
-
2024
- 2024-12-13 CN CN202423083035.4U patent/CN223447666U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |