CN204477330U - A kind of three eccentric metal seal butterfly valve - Google Patents
A kind of three eccentric metal seal butterfly valve Download PDFInfo
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- CN204477330U CN204477330U CN201520129379.6U CN201520129379U CN204477330U CN 204477330 U CN204477330 U CN 204477330U CN 201520129379 U CN201520129379 U CN 201520129379U CN 204477330 U CN204477330 U CN 204477330U
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Abstract
A kind of three eccentric metal seal butterfly valve, comprise valve body, valve plate, valve seat and axle, axle runs through valve body and is arranged on the bearing in valve body, and is connected with valve plate by key; Valve seal pair comprises valve plate, valve seat and valve washer, and wherein valve seat and valve washer are pressed on valve body by valve seat trim ring; Axle, through the valve plate, bearing, thrust ring, the axle spacer that are positioned at valve body, is wherein connected with key between valve plate with axle, and its relative position adopts lock screw to fix; Axle establishes groove, and installs thrust ring, thrust ring both sides are provided with axle spacer; The nearly flow passage side of bearing is provided with dust ring.The utility model is compared with existing three eccentric butterfly valve, and leakage control is better, and fasten moment of torsion less, valve negotiability is larger.Use the seal ring of pure metal with the obvious advantage compared with existing product under High Temperature High Pressure or low temperature.
Description
Technical field
The utility model relates to a kind of butterfly valve, is specifically related to a kind of linear sealing type three eccentric metal seal butterfly valve, belongs to machinery automatic control technology field.
Background technique
Butterfly valve is a kind of conventional control valve, has the industry fields such as structure is simple, volume is little, lightweight feature is widely used in petrochemical industry, metallurgical steel-making, water treatment, electric power.
At present, High Temperature High Pressure is the adjustment of High Pressure Difference and the three eccentric butterfly valve under cutting off occasion especially, is all imported product mostly.The three eccentric butterfly valve that domestic manufacturer produces is generally soft seal, seal ring is metal and graphite stacked structure, this structure generally has good sealability at normal temperatures and pressures, but because the narrow limitation of graphite material Applicable scope can cause leakage rate to increase under High Temperature High Pressure or low temperature, the situation that valve fits badly.In addition, under the impact of high-pressure medium, Expanded graphite is easy to be destroyed, thus makes valve leaks.
The metal sealing type three eccentric butterfly valve seal form of domestic production is all face sealing substantially, and valve plate is conical surface, and seal ring is placed on valve plate, and compress with trim ring, valve body processes step and coordinates with seal ring.The shortcoming of such design is in order to valve body and seal ring coordinate and body cavity must be reduced, and makes the negotiability of valve greatly reduce like this, and once the sealing surface on valve body damages, pole not aspect maintenance; Moment of torsion required for the sealing of face is large, needs the actuator that apolegamy is larger.
Model utility content
For there being the defect of technology on overcoming, the utility model is called on and is adapted to High Temperature High Pressure and the various different occasion such as normal temperature and pressure and low temperature, high performance metal sealing type three eccentric butterfly valve providing a kind of.
For achieving the above object, the utility model adopts following technological scheme:
A kind of three eccentric metal seal butterfly valve, comprise valve body, valve plate, valve seat and axle, axle runs through valve body and is arranged on the bearing in valve body, and is connected with valve plate by key; Valve seal pair comprises valve plate, valve seat and valve washer, and wherein valve seat and valve washer are pressed on valve body by valve seat trim ring; Axle, through the valve plate, bearing, thrust ring, the axle spacer that are positioned at valve body, is wherein connected with key between valve plate with axle, and its relative position adopts lock screw to fix; Axle establishes groove, and installs thrust ring, thrust ring both sides are provided with axle spacer; The nearly flow passage side of bearing is provided with dust ring.
Further, the seal form of valve is linear sealing.
Further, the sealing surface of valve plate is the positive conical surface, and the sealing surface of valve seat is arc surface.
Further, valve plate and axle use lock screw to fix relative position, axially use thrust ring to coordinate spacing with axle spacer.
Because technique scheme is used, the utility model has following advantages:
The utility model is compared with existing three eccentric butterfly valve, and leakage control is better, and fasten moment of torsion less, valve negotiability is larger.Use the seal ring of pure metal with the obvious advantage compared with existing product under High Temperature High Pressure or low temperature.
Accompanying drawing explanation
Fig. 1 is the plan structure schematic diagram of the utility model embodiment;
Fig. 2 is the cross-sectional schematic along A-A direction in Fig. 1;
Fig. 3 is the utility model embodiment three core shift structural representation;
Fig. 4 is the utility model embodiment sealing pair structural representation.
Embodiment
Below in conjunction with drawings and Examples, the utility model is further described:
Embodiment: shown in Fig. 1, Fig. 2, Fig. 3 and Fig. 4:
Axle spacer has three in the present embodiment, is respectively axle spacer A, axle spacer B and axle spacer C.
A kind of three eccentric metal seal butterfly valve, comprises valve body 1, valve plate 2 and valve seat 3, and valve body 1 itself is provided with circular cavity, and valve plate 2 is arranged in described cavity, described cavity inner wall is provided with block 22; Valve seat 3 is embedded the afterbody at valve body 1, and vertically runs through valve body 1.Can find out in FIG, the bottom of valve body 1 is provided with end cap 18, and this end cap 18 bolt of cover 24 and spring washer 25 are fixed.Can find out in fig. 2, axle 6 and valve plate 2 adopt key 9 to be connected, and also adopt lock screw 19 to be fixed between axle 6 and valve plate 2.The axle 6 being positioned at valve plate about 2 two ends is provided with bearing 7, and is provided with dust ring 26 between bearing 7 and axle 6.Axle spacer B12, thrust ring 8, axle spacer C13 and end cap packing ring 10 is also disposed with between end cap 18 and axle 6; Be positioned on the axle 6 above another bearing 7 and be disposed with axle spacer A11, V-type filler spacer 21, filler 20 and Gland 14, finally be fixed by the hold-down grid 15 above Gland 14, hold-down grid 15 adopts filler stud 16 and stuffing nut 17 itself and valve body 1 to be fixed.Valve body 1 upper end is connected with flange bracket 27, and this flange bracket 27 is fixed on valve body 1 by pin 28 and socket head screw 29, and axle 6 upwards runs through flange bracket 27, and is positioned on the axle 6 above flange bracket 27 and is provided with actuator's key 30.
Shown in composition graphs 2 and Fig. 4, valve seat 3 and valve washer 5 are pressed on valve body 1 by valve seat trim ring 4, and this valve seat trim ring 4 adopts trim ring screw 23 to be fixed on valve body 1.Valve plate 2 sealing surface is the positive conical surface, and valve seat 3 sealing surface is arc surface, and when adopting sealing structure to make valve open, valve plate 2 and valve seat 3 are more easily thrown off.The structure of linear sealing also makes impacting force larger, and leakage control is better.Valve seat 3 and valve body 1 radial direction leave gap, and during valve closing, valve seat 3 can automatic capturing optimal seal position, ensures optimum sealing effect.
The sealing configuration that the utility model uses and common three eccentric butterfly valve use face sealing different, and use linear sealing, linear sealing has higher contact usually, can realize sealing better.Valve plate uses positive vertebra face, compared with the eccentric circular cone adopted with other producers domestic, the pressure uniformity of face everywhere on the sealing pair of positive vertebra face, and face everywhere of partially boring is pressed completely not identical, there are high pressure and low pressure area, pressure ratio zone of high pressure, face required when low pressure area reaches sealing is higher, needs larger moment of torsion to realize sealing.So compared with existing inclined vertebra face, the centre plane needed for the positive conical surface seal of the utility model forces down, and the moment of torsion of needs is little, more easily realize sealing.Therefore, compared with existing three eccentric butterfly valve, leakage control is better, and fasten moment of torsion less, valve negotiability is larger.Use the seal ring of pure metal with the obvious advantage compared with existing product under High Temperature High Pressure or low temperature.
Above-described embodiment, only for technical conceive of the present utility model and feature are described, its object is to person skilled in the art can be understood content of the present utility model and implement according to this, can not limit protection domain of the present utility model with this.All equivalences done according to the utility model change or modify, and all should be encompassed within protection domain of the present utility model.
Claims (4)
1. a three eccentric metal seal butterfly valve, comprises valve body, valve plate, valve seat and axle, and axle runs through valve body and is arranged on the bearing in valve body, and is connected with valve plate by key; It is characterized in that, valve seal pair comprises valve plate, valve seat and valve washer, and wherein valve seat and valve washer are pressed on valve body by valve seat trim ring; Axle, through the valve plate, bearing, thrust ring, the axle spacer that are positioned at valve body, is wherein connected with key between valve plate with axle, and its relative position adopts lock screw to fix; Axle establishes groove, and installs thrust ring, thrust ring both sides are provided with axle spacer; The nearly flow passage side of bearing is provided with dust ring.
2. a kind of three eccentric metal seal butterfly valve according to claim 1, is characterized in that, the form of valve sealing face is linear sealing.
3. a kind of three eccentric metal seal butterfly valve according to claim 2, is characterized in that, the sealing surface of valve plate is the positive conical surface, and the sealing surface of valve seat is arc surface.
4. a kind of three eccentric metal seal butterfly valve according to any one of claim 1 to 3, is characterized in that, valve plate and axle use lock screw to fix relative position, axially uses thrust ring to coordinate spacing with axle spacer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520129379.6U CN204477330U (en) | 2015-03-06 | 2015-03-06 | A kind of three eccentric metal seal butterfly valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520129379.6U CN204477330U (en) | 2015-03-06 | 2015-03-06 | A kind of three eccentric metal seal butterfly valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204477330U true CN204477330U (en) | 2015-07-15 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520129379.6U Active CN204477330U (en) | 2015-03-06 | 2015-03-06 | A kind of three eccentric metal seal butterfly valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204477330U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105987185A (en) * | 2016-06-27 | 2016-10-05 | 无锡斯考尔自动控制设备有限公司 | High-pressure triple eccentric butterfly valve |
-
2015
- 2015-03-06 CN CN201520129379.6U patent/CN204477330U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105987185A (en) * | 2016-06-27 | 2016-10-05 | 无锡斯考尔自动控制设备有限公司 | High-pressure triple eccentric butterfly valve |
| CN105987185B (en) * | 2016-06-27 | 2018-07-03 | 无锡斯考尔自动控制设备有限公司 | A kind of three core shift butterfly valve of high pressure |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: Triple eccentric metallic seal butterfly valve Effective date of registration: 20170313 Granted publication date: 20150715 Pledgee: Agricultural Bank of China Limited by Share Ltd Wuxi science and Technology Branch Pledgor: Wuxi Squall automatic control equipment Co., Ltd Registration number: 2017990000185 |
|
| PC01 | Cancellation of the registration of the contract for pledge of patent right | ||
| PC01 | Cancellation of the registration of the contract for pledge of patent right |
Date of cancellation: 20211125 Granted publication date: 20150715 Pledgee: Agricultural Bank of China Limited by Share Ltd. Wuxi science and Technology Branch Pledgor: WUXI SCORE AUTOMATIC CONTROL EQUIPMENT CO.,LTD. Registration number: 2017990000185 |