CN201461997U - Two-way hard sealing butterfly valve - Google Patents
Two-way hard sealing butterfly valve Download PDFInfo
- Publication number
- CN201461997U CN201461997U CN2009200765436U CN200920076543U CN201461997U CN 201461997 U CN201461997 U CN 201461997U CN 2009200765436 U CN2009200765436 U CN 2009200765436U CN 200920076543 U CN200920076543 U CN 200920076543U CN 201461997 U CN201461997 U CN 201461997U
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- sealing
- butterfly
- sealing ring
- valve body
- valve
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Abstract
The utility model relates to a two-way rigid sealing butterfly valve comprising a butterfly plate, a valve rod and a valve body, wherein the valve body is provided with an upper shaft hole and a lower shaft hole; the butterfly plate is provided with a sealing ring; and the sealing ring is tightly pressed with the butterfly plate together through a press plate, forms a sealing pair with the sealing surface of the valve body together and is manufactured by overlapping stainless steel plates and non-metallic plates in a layered way and adopting a special bonding agent and a special pressing technology. The utility model adopts the sealing ring formed by overlapping the stainless steel plates and the non-metallic plates in the layered way, the sealing ring not only has the elasticity of a non-metallic sealing ring, but also has the rigidity and the abrasive resistance of a metal sealing ring; when media forwards flows, the sealing property is more stable; when the media reversely flow, the sealing ring can not deform, and a sealing state is also kept between the sealing ring and the sealing surface of the valve body to realize two-way sealing. Compared with the prior art, the utility model further enlarges the application range and can be used for positions of a technical pipeline, which need the two-way sealing.
Description
Technical field
The utility model relates to a kind of valve, relates in particular to the butterfly valve of a kind of two way sealed design, good sealing effect.
Background technique
Butterfly valve (English: butterfly valve) be meant that closure member is a disk, rotate a kind of valve that reaches open and close around valve shaft, cut off and throttling usefulness on pipeline by main rising.The butterfly valve open-shut device is a discoidal butterfly plate, and the axis around himself in valve body rotates, thereby reaches the purpose that opens and closes or regulate.Butterfly valve has that open-close convenient is rapid, laborsaving, and fluid resistance is little, and adjusting function is good, can transport mud, accumulates advantages such as liquid is minimum in pipeline opening.
Make step on the butterfly plate of existing butterfly valve, the pressing plate ring that is used to place nonmetal seal ring He compresses this nonmetal seal ring, pressing plate ring and butterfly plate pass through bolton together, and nonmetal seal ring and valve body sealing surface are formed a sealing pair.Because nonmetal seal ring has certain elasticity, when the medium forward flow, medium acts on tightr that sealing surface that making every effort to promote on the butterfly plate make nonmetal seal ring and valve body sealing surface fit, the seal pressure increase, and medium power helps the sealing of valve.But when the medium reverse flow, medium acts on making every effort to promote on the butterfly plate throws off the sealing surface of nonmetal seal ring and valve body sealing surface, and medium power is unfavorable for the sealing of valve, situation about revealing occurs.This has just influenced the application area of butterfly valve, and as in fields such as petrochemical industry, building, some medium pipeline valves require to bear from positive and negative two pressure medium, and do not have leakage.
The model utility content
Technical problem to be solved in the utility model is that the defective that overcomes prior art provides a kind of two-way hard seal butterfly valve, and this two-way hard seal butterfly valve has two way sealed and advantage of good sealing effect.
To achieve these goals, the technical solution of the utility model is as follows:
Two-way hard seal butterfly valve, comprise butterfly plate, valve rod and have the valve body of upper and lower axis hole, butterfly plate is provided with seal ring, the sealing circle is pressed on butterfly plate by the pressing plate ring, described seal ring and valve body sealing surface are formed a sealing pair, it is characterized in that: described seal ring is superposeed by corrosion resistant plate and non-metal board interlayer, and adopts particular adhesive and special process compacting to form.
Further, in the utility model, described butterfly plate profile is tortoise lid shape, and butterfly plate is provided with horizontal stiffening rib.This structure makes the positive and negative both direction rigidity of butterfly plate reach seal request, and weight is lighter relatively.
Further, in the utility model, be provided with axle sleeve in the upper and lower axis hole of described valve body, certain matching gap is arranged between axle sleeve and the valve rod.
Further, in the utility model, the divided ring structure is adopted in the bottom of described valve rod, makes the valve rod axially locating.
The utility model is by adopting the seal ring by corrosion resistant plate and the stack of non-metal board interlayer, and the sealing circle had both had the elasticity of nonmetal seal ring, and the hardness and the wear resistance of metal o-ring arranged again.During the medium forward flow, sealability is more stable; During the medium reverse flow, seal ring is indeformable, still keeps sealing state between seal ring and the valve body sealing surface, realizes two way sealed.
Compared with prior art, application area of the present utility model further enlarges, and need in the process pipelines can be applicable to the occasion of two way sealed.
Description of drawings
Describe the utility model in detail below in conjunction with the drawings and specific embodiments:
Fig. 1 is a structural representation of the present utility model;
Fig. 2 is an A place enlarged view among Fig. 1;
Fig. 3 is the plan view of the utility model butterfly plate;
Fig. 4 is that the B-B of Fig. 3 is to sectional view;
Fig. 5 is that the C-C of Fig. 3 is to sectional view.
Embodiment
For technological means, creation characteristic that the utility model is realized, reach purpose and effect is easy to understand, below in conjunction with concrete diagram, further set forth the utility model.
Referring to Fig. 1, a kind of butterfly valve comprises valve body 6, butterfly plate 9 and valve rod 7.Have on the valve body 6 and valve rod 7 corresponding upper shaft hole and lower shaft holes, all be placed with axle sleeve (3,5) in the upper and lower axis hole, valve rod 7 inserts from the upper shaft hole of valve body 8, after passing the butterfly plate hole 91 of butterfly plate 9, in the insertion lower shaft hole, with bolt 1 end cap 2 is covered in the lower shaft hole lower end then, adopt pin 8 fixing between butterfly plate 9 and the valve rod 7.Certain matching gap is arranged between axle sleeve and the valve rod,, increased its working life to reduce friction to valve rod.For the ease of the axially locating of valve rod 7, guaranteed the tram of seal ring 10 on the butterfly plate 9, adopt divided ring 4 structures in the bottom of valve rod 7.Adopt packing seal between the upper shaft hole of valve body and the valve rod.
In addition, further improve in order to make valve rod bending resistance, antitorque and anti-shear ability, valve rod is selected high-intensity material for use, perhaps suitably strengthens the diameter of valve rod; And the technology that adopts valve body and butterfly plate to close the boring axis hole improves the quality of fit at sealing position between valve body and the butterfly plate.
Referring to Fig. 3,4,5, butterfly plate 9 profiles are tortoise lid shape, and butterfly plate 9 is provided with six horizontal stiffening ribs 92.This structure is guaranteeing to make the positive and negative both direction rigidity of butterfly plate reach seal request under the lighter relatively prerequisite of butterfly plate weight, and can wash away following and indeformable in the medium power of positive and negative both direction.On butterfly plate, make step 93, the pressing plate ring 12 (referring to Fig. 2) that is used to place seal ring 10 and compresses the sealing circle, pressing plate ring 12 tightens together by bolt 11 with butterfly plate 9, and the outer ring surface 101 of seal ring 10 is the conical surface, and is corresponding with valve body sealing surface 61.Seal ring 10 is formed a sealing pair with valve body sealing surface 61.
It is pointed out that seal ring adopts multilayered structure,, and adopt particular adhesive and special process compacting to form by corrosion resistant plate and the stack of non-metal board interlayer.The sealing circle has the elasticity of nonmetal seal ring, and the hardness and the wear resistance of metal o-ring arranged again, and tearing toughness is good.During the medium forward flow, because seal ring has the elasticity of nonmetal seal ring, medium acts on tightr that outer ring surface that making every effort to promote on the butterfly plate make seal ring and valve body sealing surface fit, the seal pressure increase, and medium power helps the sealing of valve.When the medium reverse flow, because seal ring has the hardness and the wear resistance of metal o-ring, seal ring is indeformable, still keeps sealing state between seal ring and the valve body sealing surface, and oppositely sealing reaches 1.1 times of rated pressures, realizes two way sealed.
In addition, in the utility model,, further guarantee the oppositely effect of sealing of this butterfly valve, suitably strengthened the driving torque of the drive unit of this butterfly valve in order to overcome the negative eccentric moment that reverse media pressure is brought.
The utility model can be used for fields such as petrochemical industry, metallurgy, electric power, building, is applicable to multiple media such as water, steam, oil product, acids.
The specification of the utility model two-way hard seal butterfly valve is: 2 " (DN100)-32 " (DN800);
Pressure: 150LB～300LB (2.0MPa～5.0MPa)
More than show and described basic principle of the present utility model, major character and advantage of the present utility model.The technician of the industry should understand; the utility model is not restricted to the described embodiments; what describe in the foregoing description and the specification is principle of the present utility model; the utility model also has various changes and modifications under the prerequisite that does not break away from the utility model spirit and scope, and these changes and improvements all fall in the claimed scope of the present utility model.The protection domain that the utility model requires is defined by appending claims and equivalent thereof.
Claims (4)
1. two-way hard seal butterfly valve, comprise butterfly plate, valve rod and have the valve body of upper and lower axis hole, butterfly plate is provided with seal ring, the sealing circle is pressed on butterfly plate by the pressing plate ring, described seal ring and valve body sealing surface are formed a sealing pair, it is characterized in that: described seal ring is formed by stacking by corrosion resistant plate and non-metal board interlayer.
2. two-way hard seal butterfly valve according to claim 1 is characterized in that, described butterfly plate profile is tortoise lid shape, and butterfly plate is provided with horizontal stiffening rib.
3. two-way hard seal butterfly valve according to claim 1 is characterized in that, is provided with axle sleeve in the upper and lower axis hole of described valve body.
4. two-way hard seal butterfly valve according to claim 1 is characterized in that, the divided ring structure is adopted in the bottom of described valve rod.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200765436U CN201461997U (en) | 2009-06-18 | 2009-06-18 | Two-way hard sealing butterfly valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200765436U CN201461997U (en) | 2009-06-18 | 2009-06-18 | Two-way hard sealing butterfly valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201461997U true CN201461997U (en) | 2010-05-12 |
Family
ID=42389350
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009200765436U Expired - Fee Related CN201461997U (en) | 2009-06-18 | 2009-06-18 | Two-way hard sealing butterfly valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201461997U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103363134A (en) * | 2013-08-02 | 2013-10-23 | 铜陵市兴达阀门总厂 | High-reliability bi-directional hard sealing butterfly valve |
| CN108036062A (en) * | 2017-11-14 | 2018-05-15 | 凯喜姆阀门有限公司 | A kind of high pressure eccentric-butterfly-valve |
-
2009
- 2009-06-18 CN CN2009200765436U patent/CN201461997U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103363134A (en) * | 2013-08-02 | 2013-10-23 | 铜陵市兴达阀门总厂 | High-reliability bi-directional hard sealing butterfly valve |
| CN108036062A (en) * | 2017-11-14 | 2018-05-15 | 凯喜姆阀门有限公司 | A kind of high pressure eccentric-butterfly-valve |
| CN108036062B (en) * | 2017-11-14 | 2019-11-12 | 凯喜姆阀门有限公司 | A kind of high pressure eccentric-butterfly-valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 201825 Jiading Jiading District Industrial Zone, Bao Qian Road, No. 3788 Patentee after: Shanghai Kai valve Limited by Share Ltd Address before: 201825 Jiading Jiading District Industrial Zone, Bao Qian Road, No. 3788 Patentee before: Shanghai Kai-Gong Valve Co., Ltd. |
|
| 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: 20100512 Termination date: 20180618 |