CN204573307U - A kind of butterfly buffer valve damping hydraulic cylinder side valve axle stuffing seal - Google Patents
A kind of butterfly buffer valve damping hydraulic cylinder side valve axle stuffing seal Download PDFInfo
- Publication number
- CN204573307U CN204573307U CN201520156124.9U CN201520156124U CN204573307U CN 204573307 U CN204573307 U CN 204573307U CN 201520156124 U CN201520156124 U CN 201520156124U CN 204573307 U CN204573307 U CN 204573307U
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- packing
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- valve shaft
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- Expired - Fee Related
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- 238000013016 damping Methods 0.000 title claims abstract description 15
- 238000012856 packing Methods 0.000 claims abstract description 65
- 210000004907 gland Anatomy 0.000 claims abstract description 14
- 239000011159 matrix material Substances 0.000 claims description 10
- 238000012423 maintenance Methods 0.000 abstract description 8
- 238000007789 sealing Methods 0.000 abstract description 8
- 230000000694 effects Effects 0.000 abstract description 7
- 230000007547 defect Effects 0.000 abstract description 4
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000033764 rhythmic process Effects 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 238000013461 design Methods 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 230000001131 transforming effect Effects 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Landscapes
- Lift Valve (AREA)
- Details Of Valves (AREA)
- Sealing Devices (AREA)
Abstract
The utility model relates to a kind of butterfly buffer valve damping hydraulic cylinder side valve axle stuffing seal, comprises; Valve shaft, packing seal letter, Gland, and the stuffing box packing be arranged between packing seal letter and valve shaft, described stuffing box packing is packing_seal circle, radial direction between valve shaft and packing seal letter is provided with packing_seal circle described in individual pen, is in axial direction provided with multi-turn packing_seal circle between valve shaft and packing seal letter; Stiffening ring is provided with between described valve shaft and packing seal letter, the beneficial effects of the utility model are: the sealing effect significantly improving butterfly valve plate axle and stuffing box packing gland place, overcome the defect of leaking of existing safety check product, buffer valve safe and stable operation can be ensured; Regular maintenance and maintenance conveniently, extend the replacement cycle, reduce operating cost; Device is also applicable to transform existing butterfly valve product.
Description
Technical field
The utility model belongs to butterfly valve operation equipment, particularly relates to a kind of butterfly buffer valve damping hydraulic cylinder side valve axle stuffing seal.
Background technique
There is packing seal letter and design irrational defect in existing large-diameter butterfly valve, as DN1200 heavy caliber butterfly buffer valve (1.0Mpa), stuffing box adopts individual layer packing seal ring, good seal action can not be played in the dynamic case, frequent generation valve shaft and stuffing box packing gland place water leakage phenomenon, need frequently to change stuffing box packing, cause maintenance cost high, affect rhythm of production, site environment is moist, equipment corrosion is serious.
Summary of the invention
The purpose of this utility model is the technological scheme proposing a kind of butterfly buffer valve damping hydraulic cylinder side valve axle stuffing seal, improves the sealing effect at butterfly valve plate axle place.
To achieve these goals, the technical solution of the utility model is: a kind of butterfly buffer valve damping hydraulic cylinder side valve axle stuffing seal, comprises; Valve shaft, packing seal letter, Gland, and the stuffing box packing be arranged between packing seal letter and valve shaft, described stuffing box packing is packing_seal circle, radial direction between valve shaft and packing seal letter is provided with packing_seal circle described in individual pen, is in axial direction provided with multi-turn packing_seal circle between valve shaft and packing seal letter.
Further, in order to ensure sealing effect, between described valve shaft and packing seal letter, be in axial direction provided with the packing_seal circle being no less than four circles.
Further, in order to ensure the compression intensity of multilayer packing seal ring, stiffening ring is provided with between described valve shaft and packing seal letter, the external diameter of described stiffening ring and the minor diameter fit of packing seal letter, the internal diameter of stiffening ring and the major diameter fit of valve shaft, the external diameter of stiffening ring is provided with annular groove, is provided with dismounting screw at the end face of stiffening ring; Stiffening ring is arranged in the middle of the packing_seal circle of described axial multi-turn setting.
Further, when transforming original butterfly valve, described sealed letter comprises sealed letter matrix and sealed letter lengthens cover, and described sealed letter matrix is connected with the valve body of described butterfly valve, one end that described sealed letter lengthens cover is welded with sealed letter matrix, and the other end that sealed letter lengthens cover is provided with flange; Described Gland is arranged on sealed letter and lengthens on the described flange of cover; Inner sleeve is provided with between sealed letter and described packing_seal circle.
The beneficial effects of the utility model are: the sealing effect significantly improving butterfly valve plate axle and stuffing box packing gland place, overcome the defect of leaking of existing safety check product, can ensure buffer valve safe and stable operation; Regular maintenance and maintenance conveniently, extend the replacement cycle, reduce operating cost; Device is also applicable to transform existing butterfly valve product.
Below in conjunction with drawings and Examples, the utility model is described in detail.
Accompanying drawing explanation
Fig. 1 is the utility model structural drawing;
Fig. 2 is the location view of the utility model on butterfly buffer valve, and A portion is the position of valve shaft stuffing seal;
Fig. 3 is the structural drawing adopting the utility model device existing product to be carried out to structure of modification;
Fig. 4 is existing product sealing device structure figure.
Embodiment
As shown in Figure 1, Figure 2, a kind of butterfly buffer valve damping hydraulic cylinder side valve axle stuffing seal, comprises; Valve shaft 10, packing seal letter 20, Gland 30, and the stuffing box packing 40 be arranged between packing seal letter and valve shaft, described stuffing box packing is packing_seal circle, radial direction between valve shaft and packing seal letter is provided with packing_seal circle described in individual pen, is in axial direction provided with multi-turn packing_seal circle between valve shaft and packing seal letter.
In order to ensure sealing effect, between described valve shaft and packing seal letter, be in axial direction provided with the packing_seal circle being no less than four circles.
Stiffening ring 50 is provided with between described valve shaft and packing seal letter, the external diameter of described stiffening ring and the minor diameter fit of packing seal letter, the internal diameter of stiffening ring and the major diameter fit of valve shaft, the external diameter of stiffening ring is provided with annular groove 51, is provided with dismounting screw 52 at the end face of stiffening ring; Stiffening ring is arranged in the middle of the packing_seal circle of described axial multi-turn setting.
Embodiment one:
As shown in Figure 1, Figure 2, a kind of butterfly buffer valve damping hydraulic cylinder side valve axle stuffing seal, comprises; Valve shaft 10, packing seal letter 20, Gland 30, and be arranged on the stuffing box packing 40 between packing seal letter and valve shaft.Follower to be fixed on packing seal letter and press seal filler by the flange 21 on packing seal letter.Butterfly buffer valve is provided with damping hydraulic cylinder 61.
Described stuffing box packing is packing_seal circle, and the radial direction between valve shaft and packing seal letter is provided with packing_seal circle described in individual pen, is in axial direction provided with four circle packing_seal circles between valve shaft and packing seal letter.
Stiffening ring 50 is provided with between described valve shaft and packing seal letter, the external diameter of described stiffening ring and the minor diameter fit of packing seal letter, the internal diameter of stiffening ring and the major diameter fit of valve shaft, the external diameter of stiffening ring is provided with annular groove 51, is provided with dismounting screw 52 at the end face of stiffening ring; Stiffening ring is arranged in the middle of described four circle packing_seal circles.Stiffening ring can ensure the compression intensity of multilayer packing seal ring, strengthens sealing effect.The dismounting screw of stiffening ring is used for using bolt to be taken out in the middle of valve shaft and packing seal letter by stiffening ring when dismantling.
Embodiment two:
As Fig. 2, Fig. 3, a kind of butterfly buffer valve damping hydraulic cylinder side valve axle stuffing seal.Comprise; Valve shaft 10, packing seal letter 20, Gland 30, and be arranged on the stuffing box packing 40 between packing seal letter and valve shaft.
The present embodiment adopts a kind of butterfly buffer valve damping hydraulic cylinder side valve axle stuffing seal described in embodiment one to carry out structure of modification to original butterfly valve product.
Described sealed letter comprises sealed letter matrix 22 and sealed letter lengthens cover 23, and described sealed letter matrix is connected with the valve body 60 of described butterfly valve, and one end that described sealed letter lengthens cover is welded with sealed letter matrix, and the other end that sealed letter lengthens cover is provided with flange 24; Described Gland is arranged on sealed letter and lengthens on the flange of cover; Inner sleeve 70 is provided with between sealed letter and described packing_seal circle.
The butterfly buffer valve of this enforcement is DN1200 heavy caliber butterfly buffer valve, and working pressure is 1.0Mpa.As shown in Figure 4, in original structure, stuffing box adopts individual layer packing seal ring, good seal action can not be played in the dynamic case, frequent generation valve shaft and stuffing box packing gland place water leakage phenomenon, need frequently to change stuffing box packing, cause maintenance cost high, affect rhythm of production, site environment is moist, equipment corrosion is serious.
Carrying out in structure of modification, changing original radial bilayer, axial individual layer packing seal ring into radial individual layer, axially four layers of packing_seal circle.
Structurally, the physical dimension of packing seal letter needs to lengthen, and processing and fabricating lengthens sealed letter cover, adopts welding and former packing seal letter (i.e. sealed letter matrix 22) accessory to connect.
Between making between packing seal letter and valve shaft, keep rational space that packing seal ring is installed, an inner sleeve need be increased.
Packing_seal, by original individual layer, can reach 4 or 5 layers after transformation, has good sealability.
Improved structure significantly improves the sealing effect at butterfly valve plate axle and stuffing box packing gland place, overcomes the defect of leaking of existing product, can ensure buffer valve safe and stable operation; And regular maintenance and maintenance are conveniently, extend the replacement cycle, reduce operating cost; Device is also applicable to transform existing butterfly valve product.
Claims (4)
1. a butterfly buffer valve damping hydraulic cylinder side valve axle stuffing seal, comprises; Valve shaft, packing seal letter, Gland, and the stuffing box packing be arranged between packing seal letter and valve shaft, it is characterized in that, described stuffing box packing is packing_seal circle, radial direction between valve shaft and packing seal letter is provided with packing_seal circle described in individual pen, is in axial direction provided with multi-turn packing_seal circle between valve shaft and packing seal letter.
2. a kind of butterfly buffer valve damping hydraulic cylinder side valve axle stuffing seal according to claim 1, is characterized in that, be in axial direction provided with the packing_seal circle being no less than four circles between described valve shaft and packing seal letter.
3. a kind of butterfly buffer valve damping hydraulic cylinder side valve axle stuffing seal according to claim 1, it is characterized in that, stiffening ring is provided with between described valve shaft and packing seal letter, the external diameter of described stiffening ring and the minor diameter fit of packing seal letter, the internal diameter of stiffening ring and the major diameter fit of valve shaft, the external diameter of stiffening ring is provided with annular groove, is provided with dismounting screw at the end face of stiffening ring; Stiffening ring is arranged in the middle of the packing_seal circle of described axial multi-turn setting.
4. a kind of butterfly buffer valve damping hydraulic cylinder side valve axle stuffing seal according to claim 1, it is characterized in that, described sealed letter comprises sealed letter matrix and sealed letter lengthens cover, described sealed letter matrix is connected with the valve body of described butterfly valve, one end that described sealed letter lengthens cover is welded with sealed letter matrix, and the other end that sealed letter lengthens cover is provided with flange; Described Gland is arranged on sealed letter and lengthens on the described flange of cover; Inner sleeve is provided with between sealed letter and described packing_seal circle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520156124.9U CN204573307U (en) | 2015-03-19 | 2015-03-19 | A kind of butterfly buffer valve damping hydraulic cylinder side valve axle stuffing seal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520156124.9U CN204573307U (en) | 2015-03-19 | 2015-03-19 | A kind of butterfly buffer valve damping hydraulic cylinder side valve axle stuffing seal |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204573307U true CN204573307U (en) | 2015-08-19 |
Family
ID=53865944
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520156124.9U Expired - Fee Related CN204573307U (en) | 2015-03-19 | 2015-03-19 | A kind of butterfly buffer valve damping hydraulic cylinder side valve axle stuffing seal |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204573307U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107314101A (en) * | 2017-08-12 | 2017-11-03 | 江苏星宇电机有限公司 | A kind of reducing motor of anti-oil leak |
-
2015
- 2015-03-19 CN CN201520156124.9U patent/CN204573307U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107314101A (en) * | 2017-08-12 | 2017-11-03 | 江苏星宇电机有限公司 | A kind of reducing motor of anti-oil leak |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150819 |