CN101818814A - Eccentric butterfly valve - Google Patents
Eccentric butterfly valve Download PDFInfo
- Publication number
- CN101818814A CN101818814A CN200910022328A CN200910022328A CN101818814A CN 101818814 A CN101818814 A CN 101818814A CN 200910022328 A CN200910022328 A CN 200910022328A CN 200910022328 A CN200910022328 A CN 200910022328A CN 101818814 A CN101818814 A CN 101818814A
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- Prior art keywords
- eccentric
- valve
- butterfly plate
- sealing surface
- adjustment piece
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- 238000007789 sealing Methods 0.000 claims abstract description 55
- 230000001154 acute effect Effects 0.000 claims description 3
- 238000000034 method Methods 0.000 description 6
- 230000000694 effects Effects 0.000 description 4
- 230000033001 locomotion Effects 0.000 description 3
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- 210000000664 rectum Anatomy 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
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Abstract
一种偏心蝶阀，包括有阀体1，所述的阀体1内设有球型密封面的偏心蝶板2和对应设置的球型密封面的阀座10，偏心蝶板2通过连杆9安装在阀杆5上，偏心蝶板2的背面设置有偏心调节块3，偏心调节块3通过偏心调节块移动轴钉8与弧形连杆4相连，弧形连杆4通过定位销6固定安装在阀杆5上。其利用介质压力作为达到阀门密封的主要作用力，采用大偏心连杆结构的阀板以及三角形偏心调节块调整密封面接触，减少密封面摩擦，达到通过较小的阀杆扭矩启闭阀门的目的，简化驱动装置。
An eccentric butterfly valve, including a valve body 1, the valve body 1 is provided with an eccentric butterfly plate 2 with a spherical sealing surface and a valve seat 10 with a corresponding spherical sealing surface, and the eccentric butterfly plate 2 passes through the connecting rod 9 Installed on the valve stem 5, the back of the eccentric butterfly plate 2 is provided with an eccentric adjustment block 3, the eccentric adjustment block 3 is connected with the arc-shaped connecting rod 4 by moving the shaft nail 8 through the eccentric adjustment block, and the arc-shaped connecting rod 4 is fixed by the positioning pin 6 Installed on the valve stem 5. It uses medium pressure as the main force to achieve valve sealing, and adopts a large eccentric connecting rod structure valve plate and a triangular eccentric adjusting block to adjust the contact of the sealing surface, reduce the friction of the sealing surface, and achieve the purpose of opening and closing the valve through a small valve stem torque , Simplify the driving device.
Description
Technical field
The present invention relates to have the valve technology field of fly valve element, relate in particular to a kind of eccentric-butterfly-valve.
Background technique
In the prior art, valve in carrying the mesolow medium pipeline is for the sealability after guaranteeing valve closing, select sealing effect better seal material for use, adopt complicated sealing configuration, perhaps provide bigger moment of torsion to play seal action to valve rod, according to the environment needs periodic replacement seal element of valve working, and dispose the drive unit that high moment of torsion is provided, cause the surcharge of valve to increase.
Summary of the invention
The purpose of this invention is to provide a kind of eccentric-butterfly-valve.
The technical solution adopted for the present invention to solve the technical problems is: described eccentric-butterfly-valve, include valve body 1, be characterized in also including: be provided with the eccentric butterfly plate 2 of ball-type sealing surface and the valve seat 10 of the corresponding ball-type sealing surface that is provided with in the described valve body 1, eccentric butterfly plate 2 is installed on the valve rod 5 by connecting rod 9, the back side of eccentric butterfly plate 2 is provided with eccentric adjustment piece 3, eccentric adjustment piece 3 links to each other with curved rod 4 by eccentric adjustment piece shifting axle nail 8, and curved rod 4 is fixedly mounted on the valve rod 5 by locating stud 6.
The present invention compares with background technique, and the useful effect that has is: described eccentric-butterfly-valve, and it makes medium that enough sealing forces are provided by adding the compression area at the eccentric butterfly plate of megalosphericus sealing surface 2 back sides; By reducing the runner latus rectum of sealing station, improve the seal pressure of sealing surface, realize that this valve mainly relies on pressure medium to reach self-packing purpose.The sealing surface of the eccentric butterfly plate 2 of ball-type sealing surface is a sphere, guarantees that it forms reliable linear sealing when contacting with the sealing surface of valve body.The element of regulating and transmitting valve rod 5 moments of torsion when eccentric adjustment piece 3 is 2 keyings of ball-type sealing surface off-centre butterfly plate, in the valve closing process, because the connecting rod effect on the eccentric butterfly plate 2 of the thrust of medium and ball-type sealing surface, the eccentric butterfly plate 2 of eccentric adjustment piece 3 blunt end A control ball-type sealing surface rotates, near the close track of the curved rod 4 eccentric butterfly plates 2 of control ball-type sealing surface valve body 1 sealing surface is straight line, reduces sealing surface wear; Behind valve closing, the eccentric butterfly plate 2 of eccentric adjustment piece 3 tip B control ball-type sealing surface rotates, and sealing is adjusted, and valve rod 5 applies less moment of torsion can guarantee sealing effect.During Open valve, eccentric adjustment piece 3 blunt end A apply lever to the eccentric butterfly plate of ball-type sealing surface 2 edges, and valve rod 5 provides less moment of torsion can make valve opening.Valve rod 5 has off-centre with butterfly plate axis YY ', can make butterfly plate movement locus and valve opening and closing moment reasonable, and is less to the mobile influence of valve rod 5 and 2 pairs of media of the eccentric butterfly plate of ball-type sealing surface behind the valve opening.
Description of drawings
Fig. 1 is that the present invention is the assembly structure schematic representation of eccentric butterfly plate 2 and valve rod 5;
Fig. 2 be among Fig. 1 of the present invention fixed block position, eccentric butterfly plate 2 back side structural representation is set;
Fig. 3 is the plan view after the edge is cut open along axis X X ' among Fig. 1 of the present invention; Also be the structural diagrams intention of the present invention when being in buttoned-up status;
Fig. 4 is the structural representation of the present invention when being in the complete opening state.
Embodiment
Shown in Fig. 1,2,3,4, described eccentric-butterfly-valve, include valve body 1, be characterized in also including: be provided with the eccentric butterfly plate 2 of ball-type sealing surface and the valve seat 10 of the corresponding ball-type sealing surface that is provided with in the described valve body 1, eccentric butterfly plate 2 is installed on the valve rod 5 by connecting rod 9, the back side of eccentric butterfly plate 2 is provided with eccentric adjustment piece 3, and eccentric adjustment piece 3 links to each other with curved rod 4 by eccentric adjustment piece shifting axle nail 8, and curved rod 4 is fixedly mounted on the valve rod 5 by locating stud 6.
The back side of described eccentric butterfly plate 2 is provided with the first fixed block 2-1, the second fixed block 2-2, the 3rd fixed block 2-3, and connecting rod 9 links to each other with eccentric butterfly plate 2 with the first fixed block 2-1, the 3rd fixed block 2-3 by axle nail 11; Eccentric adjustment piece 3 links to each other with eccentric butterfly plate 2 with the second fixed block 2-2 by eccentric adjustment piece stationary axle nail 7.Described curved rod 4 structure shapes are a semi-circle connecting rod.
Described eccentric adjustment piece 3 is an obtuse triangle, the equal rounding of triangle, both sides are straight flange, and the position of two acute angles is divided into blunt end A and tip B according to angular dimension, and eccentric butterfly plate 2 back side point of contact of eccentric adjustment piece 3 tip B and ball-type sealing surface are in the 1～5mm scope of butterfly plate axis YY ' left side; Eccentric butterfly plate 2 back side point of contact of eccentric adjustment piece 3 blunt end A and ball-type sealing surface are in eccentric butterfly plate 2 edges.Described valve rod 5 axis VV ' carry on the back the Transverse plane radiuses with the eccentric distance of butterfly plate axis YY ' more than or equal to the eccentric butterfly plate 2 of ball-type sealing surface.The back of the body end diameter of the eccentric butterfly plate 2 of described ball-type sealing surface should be 1.5～3 times of sealing surface end diameter.
As Fig. 3 is the structural drawing of the present invention when being in buttoned-up status, in the valve closing process, connecting rod 9 fixedly the eccentric butterfly plate 2 of ball-type sealing surface in the displacement of valve rod 5 axis VV ' directions, eccentric adjustment piece stationary axle nail 7 is the position of eccentric adjustment piece 3 and ball-type sealing surface off-centre butterfly plate 2 fixedly, the moment of torsion that valve rod 5 provides is by curved rod 4 and eccentric adjustment piece shifting axle nail 8, be delivered on the eccentric adjustment piece 3, eccentric adjustment piece 3 rotates around eccentric adjustment piece stationary axle nail 7, makes eccentric adjustment piece 3 tip B be pressed in the eccentric butterfly plate of ball-type sealing surface 2 back sides and exerts pressure.Eccentric adjustment piece 3 is an approximate obtuse triangle, the equal rounding of triangle, both sides are straight flange, the position of two acute angles is the circular arc limit according to the limit that angular dimension is divided between these two jiaos of blunt end A and the tip B, and in the valve opening and closing process can roll in relevant position, eccentric butterfly plate 2 back side of ball-type sealing surface in this circular arc limit; Eccentric butterfly plate 2 back side point of contact of eccentric adjustment piece 3 tip B and ball-type sealing surface should be in the 1～5mm scope of butterfly plate axis YY ' left side; Do not interfere under the prerequisite satisfied, eccentric butterfly plate 2 back side point of contact of eccentric adjustment piece 3 blunt end A and ball-type sealing surface should be as far as possible near eccentric butterfly plate 2 edges.Close in the closed procedure, curved rod 4 makes the eccentric butterfly plate 2 of ball-type sealing surface in the movement locus longshore current line direction operation near the sealing surface position, and the eccentric butterfly plate 2 of ball-type sealing surface covers on sealing seat 10 positions.
As Fig. 4 is the structural drawing of the present invention when being in opening state soon, valve rod 5 rotates and drives curved rod 4 motions, curved rod 4 makes eccentric adjustment piece 3 tip B leave the eccentric butterfly plate of ball-type sealing surface 2 back sides by eccentric adjustment piece shifting axle nail 8, eccentric adjustment piece 3 blunt end A contact with the eccentric butterfly plate of ball-type sealing surface 2 back sides, along with being rotated further of valve rod 5, eccentric adjustment piece 3 blunt end A apply lever, utilize lever principle that the eccentric butterfly plate 2 of ball-type sealing surface is levered up, the drive butterfly plate rotates, and reaching valve rod 5 provides less moment of torsion to get final product the purpose of Open valve.
Claims (6)
1. eccentric-butterfly-valve, include valve body (1), it is characterized in that also including: be provided with the eccentric butterfly plate (2) of ball-type sealing surface and the valve seat (10) of the corresponding ball-type sealing surface that is provided with in the described valve body (1), eccentric butterfly plate (2) is installed on the valve rod (5) by connecting rod (9), the back side of eccentric butterfly plate (2) is provided with eccentric adjustment piece (3), eccentric adjustment piece (3) links to each other with curved rod (4) by eccentric adjustment piece shifting axle nail (8), and curved rod (4) is fixedly mounted on the valve rod (5) by locating stud (6).
2. eccentric-butterfly-valve according to claim 1, it is characterized in that: the back side of described eccentric butterfly plate (2) is provided with first fixed block (2-1), second fixed block (2-2), the 3rd fixed block (2-3), and connecting rod (9) links to each other with eccentric butterfly plate (2) with first fixed block (2-1), the 3rd fixed block (2-3) by axle nail (11); Eccentric adjustment piece (3) links to each other with eccentric butterfly plate (2) with second fixed block (2-2) by eccentric adjustment piece stationary axle nail (7).
3. eccentric-butterfly-valve according to claim 1 is characterized in that: described curved rod (4) structure shape is a semi-circle connecting rod.
4. eccentric-butterfly-valve according to claim 2, it is characterized in that: described eccentric adjustment piece (3) is an obtuse triangle, the equal rounding of triangle, both sides are straight flange, the position of two acute angles is divided into blunt end A and tip B according to angular dimension, and the eccentric butterfly plate (2) of eccentric adjustment piece (3) tip B and ball-type sealing surface back side point of contact is in the 1～5mm scope of butterfly plate axis (YY ') left side; The eccentric butterfly plate (2) of eccentric adjustment piece (3) blunt end A and ball-type sealing surface back side point of contact is in eccentric butterfly plate (2) edge.
5. eccentric-butterfly-valve according to claim 1 is characterized in that: described valve rod (5) axis VV ' carries on the back the Transverse plane radius with the eccentric distance of butterfly plate axis YY ' more than or equal to the eccentric butterfly plate of ball-type sealing surface (2).
6. eccentric-butterfly-valve according to claim 1 is characterized in that: the back of the body end diameter of the eccentric butterfly plate of described ball-type sealing surface (2) should be 1.5～3 times of sealing surface end diameter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910022328A CN101818814A (en) | 2009-04-22 | 2009-04-22 | Eccentric butterfly valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910022328A CN101818814A (en) | 2009-04-22 | 2009-04-22 | Eccentric butterfly valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101818814A true CN101818814A (en) | 2010-09-01 |
Family
ID=42654022
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200910022328A Pending CN101818814A (en) | 2009-04-22 | 2009-04-22 | Eccentric butterfly valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101818814A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105987093A (en) * | 2015-03-16 | 2016-10-05 | 斯凯孚公司 | Bearing comprising a wear race |
-
2009
- 2009-04-22 CN CN200910022328A patent/CN101818814A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105987093A (en) * | 2015-03-16 | 2016-10-05 | 斯凯孚公司 | Bearing comprising a wear race |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Open date: 20100901 |