CN220816576U - Packing structure of three-eccentric butterfly valve - Google Patents
Packing structure of three-eccentric butterfly valve Download PDFInfo
- Publication number
- CN220816576U CN220816576U CN202322516936.7U CN202322516936U CN220816576U CN 220816576 U CN220816576 U CN 220816576U CN 202322516936 U CN202322516936 U CN 202322516936U CN 220816576 U CN220816576 U CN 220816576U
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- China
- Prior art keywords
- packing
- valve
- gland
- shaped
- lip
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- 238000012856 packing Methods 0.000 title claims abstract description 57
- 210000004907 gland Anatomy 0.000 claims abstract description 22
- 238000010276 construction Methods 0.000 claims 1
- 238000007789 sealing Methods 0.000 abstract description 20
- 239000000945 filler Substances 0.000 abstract description 15
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 abstract description 4
- 230000000694 effects Effects 0.000 abstract description 4
- 229910002804 graphite Inorganic materials 0.000 abstract description 4
- 239000010439 graphite Substances 0.000 abstract description 4
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 230000005540 biological transmission Effects 0.000 abstract description 2
- 230000002035 prolonged effect Effects 0.000 abstract description 2
- 238000005520 cutting process Methods 0.000 description 3
- 238000012423 maintenance Methods 0.000 description 3
- 238000005299 abrasion Methods 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 238000010030 laminating Methods 0.000 description 2
- 238000003825 pressing Methods 0.000 description 2
- 238000007792 addition Methods 0.000 description 1
- 238000005056 compaction Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
Landscapes
- Lift Valve (AREA)
- Details Of Valves (AREA)
Abstract
The utility model provides a packing structure of a three-eccentric butterfly valve, which comprises a valve body, a valve rod, a packing box, a packing gland, an O-shaped ring and a lip-shaped sealing ring, wherein the packing gland is tightly attached to the top of the packing box through bolts, the packing gland is tightly attached to the packing box of the valve body and the outer wall surface of the valve rod through the O-shaped ring and the lip-shaped sealing ring, and the inner wall surface of the O-shaped ring and the inner wall surface of the lip-shaped sealing ring are both attached to the valve rod. The leakage of the filler caused by graphite loss is solved; the phenomenon of difficult replacement of the filler is effectively solved; the packing gland is of an integral structure, so that the force transmission effect is improved; the O-shaped ring and the lip-shaped sealing ring are used as the packing, so that double sealing is realized, the reliability of packing sealing is improved, and the service life of the valve is prolonged; the stuffing box is provided with the threaded hole, so that the stuffing box is convenient to install and maintain, and the production and use efficiency is greatly improved.
Description
Technical Field
The utility model belongs to the technical field of packing structures, and relates to a packing structure of a three-eccentric butterfly valve.
Background
Butterfly valves are widely used in devices in petroleum, petrochemical, metallurgical, power generation and papermaking industries, are control elements in fluid systems, and can meet various common and severe fluid cutting requirements; the butterfly valve is applied to application occasions of high pressure and quick cutting, the abrasion of the valve rod to the filler is large, the packing compaction force is easy to be insufficient, then the filler is loosened, the potential risks of medium dissipation, leakage and the like exist at the positions of the filler around the valve rod after the filler is loosened, the leakage and the like of the whole system are caused, and the sealing performance and the service life of the valve are affected.
Because the butterfly valve is applied to the application occasions of high pressure and quick cutting, the abrasion of the valve rod to the filler is large, the insufficient compression force of the filler is easily caused, then the filler is loosened, the potential risks of medium dissipation, leakage and the like exist at the positions of the filler around the valve rod after the filler is loosened, and the leakage and the like of the whole system are caused; and in the maintenance and replacement process, the graphite filler is difficult to remove and replace after extrusion, and unnecessary time cost is caused.
Disclosure of Invention
The utility model aims to provide a packing structure of a three-eccentric butterfly valve, which aims to solve the problems in the background technology.
The aim of the utility model can be achieved by the following technical scheme: the utility model provides a three eccentric butterfly valve packing structure, includes valve body, valve rod, packing box, gland, O type circle and lip seal circle, gland passes through the bolt-up laminating at the top of packing box, gland passes through the inseparable laminating of O type circle and lip seal circle in the packing box of valve body and the outer wall department of valve rod, the inner wall of O type circle and the inner wall of lip seal circle all laminate with the valve rod.
In the above-mentioned three eccentric butterfly valve packing structure, the packing gland is an integrated structure.
In the packing structure of the three-eccentric butterfly valve, the top end of the packing box is provided with the threaded hole matched with the bolt.
Compared with the prior art, the filler structure of the three-eccentric butterfly valve has the advantages that: the leakage of the filler caused by graphite loss is solved; the phenomenon of difficult replacement of the filler is effectively solved; the packing gland is of an integral structure, so that the force transmission effect is improved; the O-shaped ring and the lip-shaped sealing ring are used as the packing, so that double sealing is realized, the reliability of packing sealing is improved, and the service life of the valve is prolonged; the stuffing box is provided with the threaded hole, so that the stuffing box is convenient to install and maintain, and the production and use efficiency is greatly improved.
Drawings
FIG. 1 is a schematic cross-sectional view of a packing structure of a triple offset butterfly valve of the present utility model.
Fig. 2 is a schematic perspective view of a packing structure of a triple offset butterfly valve according to the present utility model.
In the figure, 1, a valve body; 2. a valve stem; 4. a stuffing box; 3. a packing gland; 5. an O-ring; 6. lip-shaped sealing ring.
Detailed Description
The following are specific embodiments of the present utility model and the technical solutions of the present utility model will be further described with reference to the accompanying drawings, but the present utility model is not limited to these embodiments.
As shown in fig. 1 and 2, the packing structure of the triple offset butterfly valve comprises a valve body 1, a valve rod 2, a packing box 4, a packing gland 3, an O-shaped ring 5 and a lip-shaped sealing ring 6, wherein the packing gland 3 is tightly attached to the top of the packing box 4 through bolts, the packing gland 3 is tightly attached to the packing box of the valve body 1 and the outer wall surface of the valve rod 2 through the O-shaped ring 5 and the lip-shaped sealing ring 6, and the inner wall surface of the O-shaped ring 5 and the inner wall surface of the lip-shaped sealing ring 6 are both attached to the valve rod 2.
The packing gland 3 is an integrated structure. This design increases the force transfer effect. The top end of the stuffing box 4 is provided with a threaded hole matched with the bolt. The design is convenient for installation and maintenance, and greatly improves the production and use efficiency.
The packing gland consists of a packing gland, a packing box, an O-shaped ring and a lip-shaped sealing ring, and the original pressing plate and the original pressing sleeve are made into a whole to be a gland; the graphite packing is replaced by a packing box consisting of two groups of O-shaped rings, and the bottom of the packing box is provided with lip-shaped sealing rings.
The scheme is adopted: the packing gland bolts are pre-tightened, the packing is a packing box formed by two groups of O-shaped rings, and potential risks such as medium dissipation and leakage at the positions of the packing around the valve rod caused by the fact that the packing is loosened can be avoided.
The scheme is adopted: the bottom of the stuffing box is provided with the lip-shaped sealing ring, so that secondary sealing can be realized under the condition that the O-shaped ring fails, the effect of double sealing is achieved, and the sealing performance of the stuffing is ensured.
The scheme is adopted: the upper part of the stuffing box is provided with a threaded hole, so that the stuffing box can be better and faster taken out during replacement and maintenance.
What is not described in detail in this specification is prior art known to those skilled in the art. The specific embodiments described herein are offered by way of example only to illustrate the spirit of the utility model. Those skilled in the art may make various modifications or additions to the described embodiments or substitutions thereof without departing from the spirit of the utility model or exceeding the scope of the utility model as defined in the accompanying claims.
Claims (3)
1. The utility model provides a three eccentric butterfly valve packing structure, includes valve body (1), valve rod (2), packing box (4), gland (3), O type circle (5) and lip seal circle (6), its characterized in that, gland (3) laminate at the top of packing box (4) through bolt-up, gland (3) laminate closely in the outer wall face department of packing box and valve rod (2) of valve body (1) through O type circle (5) and lip seal circle (6), the inner wall face of O type circle (5) and the inner wall face of lip seal circle (6) all laminate with valve rod (2).
2. A triple offset butterfly valve packing structure according to claim 1, characterized in that the packing gland (3) is of integral construction.
3. A triple offset butterfly valve packing structure according to claim 1, characterized in that the top end of the packing box (4) is provided with threaded holes matching the bolts.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322516936.7U CN220816576U (en) | 2023-09-16 | 2023-09-16 | Packing structure of three-eccentric butterfly valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322516936.7U CN220816576U (en) | 2023-09-16 | 2023-09-16 | Packing structure of three-eccentric butterfly valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220816576U true CN220816576U (en) | 2024-04-19 |
Family
ID=90705073
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322516936.7U Active CN220816576U (en) | 2023-09-16 | 2023-09-16 | Packing structure of three-eccentric butterfly valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220816576U (en) |
-
2023
- 2023-09-16 CN CN202322516936.7U patent/CN220816576U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |