CN203656219U - Low-flow-resistance three-eccentric center butterfly valve - Google Patents
Low-flow-resistance three-eccentric center butterfly valve Download PDFInfo
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- CN203656219U CN203656219U CN201320791030.XU CN201320791030U CN203656219U CN 203656219 U CN203656219 U CN 203656219U CN 201320791030 U CN201320791030 U CN 201320791030U CN 203656219 U CN203656219 U CN 203656219U
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- valve rod
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- valve
- butterfly
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Abstract
A low-flow-resistance three-eccentric center butterfly valve comprises a valve body, a butterfly plate and a valve rod, wherein the butterfly plate is provided with a disc-shaped sealing body; the sealing body is arranged in the valve body in a rotatable mode through the valve rod; a sealing face matched with the valve body is arranged on the circumference of the sealing body; a strengthening guiding body fixedly connected with the sealing body is arranged on one side of the sealing body; the strengthening guiding body is composed of a strengthening plate parallel with the sealing body and connecting arms arranged at the two ends of the strengthening plate respectively; the strengthening plate is supported and fixed to the sealing body through the connecting arms, so that a guide channel through which fluid can pass is formed between the strengthening plate and the sealing body; the valve rod is composed of an upper valve rod body and a lower valve rod body; the upper valve rod body and the lower valve rod body are connected with the connecting arms at the two ends of the strengthening plate; the upper valve rod body penetrates through the valve body and is connected with a drive mechanism. By the utilization of the low-flow-resistance three-eccentric center butterfly valve, resistance to fluid media is reduced; compared with a traditional butterfly valve, the low-flow-resistance three-eccentric center butterfly valve has the advantages that under the situation of meeting the same intensity requirement, the use number of materials is remarkably smaller than that of the traditional butterfly valve, and therefore production cost is largely lowered.
Description
Technical field
The utility model relates to the butterfly valve that a kind of pipeline is used, especially a kind of three eccentric low flow resistance butterfly valves.
Background technique
Butterfly valve, as the valve of opening or cutting out the medium of pipeline and equipment, plays a part regulate and dam in pipeline and equipment, at oil, and rock gas, the fields such as chemical industry have a wide range of applications.In prior art, more advanced butterfly valve is three eccentric butterfly valve, and valve body and valve seat are disjunctor member, valve base sealing surface layer built-up welding heatproof, corrosion resistant alloy material, and the soft folded formula seal ring of multilayer is fixed on butterfly plate.
As shown in Figure 1 because the eccentric A of the size of setovering between valve rod axis and butterfly plate sealing surface, and and valve channel between the size bias of setovering
b, valve seat rotational axis and valve channel axis form the eccentric C of an eccentric angle, therefore form three bias.Butterfly valve is in the time opening for 0 °-90 °, butterfly plate sealing surface can depart from sealing surface of seat immediately in the moment of opening, in the time closing for 90 °-0 °, the moment of only closing, the conical sealing surface of its butterfly plate just can contact and compress the conical sealing of valve seat, so between the sealing surface on valve seat and butterfly plate without any friction, the possibility of having removed wearing and tearing and having leaked.
This butterfly valve also has high temperature resistant compared with traditional butterfly valve, operates lightly, while closing, carrys out compensation sealing along with the moment of driving mechanism increases, and has improved the sealability of butterfly valve and the advantage increasing the service life.But in actual application, do not damage ring in order to guarantee butterfly plate can bear enough pressure, it is very thick that the butterfly plate overall structure of this valve is done conventionally, thereby cause flow resistance large, and energy consumption is high.
Model utility content
In order to solve the problems of the technologies described above, the utility model provides a kind of three eccentric low flow resistance butterfly valves, can make the butterfly valve of specification of the same race reduce weight, and can reduce in use the resistance of media flow, can also guarantee the working strength of butterfly valve.
The utility model is in order to solve the problems of the technologies described above, and the technological scheme adopting is: a kind of three eccentric low flow resistance butterfly valves, comprise valve body, butterfly plate and valve rod, described butterfly plate has a discoid seal, sealing body is arranged in valve body by valve rod is rotating, on the circumference of sealing body, be provided with the sealing surface coordinating with valve body, in a side of sealing body, be provided with a reinforcement deflector being fixedly connected with seal, this reinforcement deflector is made up of with the link arm that is separately positioned on stiffening plate two ends a stiffening plate that is parallel to seal, described stiffening plate is supported and fixed on seal by link arm, make the guide channel that between stiffening plate and seal, formation is passed through for fluid, described valve rod is made up of upper valve rod and lower valve rod two-part, upper valve rod is connected with the link arm at stiffening plate two ends respectively with lower valve rod, and upper valve rod is connected with driving mechanism through valve body.
On the link arm at described stiffening plate two ends, be equipped with the fitting seat for valve rod is installed, in fitting seat, be provided with mounting hole.
In described guide channel, be provided with the guide plate being supported between stiffening plate and seal.
At described butterfly plate, during in maximum opening, described guide plate and seal are all parallel to the axis of valve body.
Described guide plate is obliquely installed with respect to seal.
Described stiffening plate with the width of the perpendicular direction of guide channel be seal diameter 0.55-0.58 doubly, the 1.20-1.25 that the direction length that it parallels with guide channel is its width doubly, described guide plate is plural piece, all be trapezoidal, trapezoidal short base is consistent with the length of stiffening plate and be fixedly connected with it, trapezoidal long base is connected with seal, and plural piece guide plate successively end-to-end forms the supporting structure that cross section is W shape.
Beneficial effect:
1, the guide channel forming between stiffening plate and seal,, can pass through for flowing medium during in opening state at butterfly valve, thereby has reduced the resistance of butterfly plate fluid medium.
2, the setting of guide channel makes to strengthen deflector and has the supporting structure of hollow, compared with solid butterfly plate, is reaching under same requirement of strength, and material consumption will significantly be less than solid butterfly plate.And this hollow structure butterfly plate entity part thickness sum is also less than solid butterfly plate, and the resistance of convection cell is also less than solid butterfly plate.
3, guide plate is arranged to trapezium structure, and when butterfly valve is opened, the waist of trapezoidal plate is met to fluid, thereby makes the resistance area of guide plate convection cell be the inclined-plane of an inclination, has further reduced the resistance of fluid medium, has reduced energy consumption, thereby has reduced cost of production.
4, the W shape supporting structure that guide plate end-to-end forms has also further guaranteed the intensity of whole butterfly plate, thereby has strengthened the functional reliability of butterfly valve.
Accompanying drawing explanation
Fig. 1 is three eccentric schematic diagram of three eccentric butterfly valve.
Fig. 2 is structural representation of the present utility model.
Fig. 3 is the left view of Fig. 2.
In figure, 1, upper valve rod, 2, butterfly plate fixed pin, 3, valve body, 4, hex head bolt, 5, seal, 6, pressing plate, 7, sealing seat, 8, lower valve rod, 9, O shape circle, 10, spacer, 11, bottom, 12, stiffening plate, 13, guide plate, 14, fitting seat.
Embodiment
Below in conjunction with the drawings and specific embodiments, the utility model is done to further concrete detailed explanation.
As shown in the figure, a kind of three eccentric low flow resistance butterfly valves, comprise valve body 3, butterfly plate and valve rod, described butterfly plate has a discoid seal 5, sealing body 5 is arranged in valve body 3 by valve rod is rotating, on the circumference of sealing body 5, be provided with the sealing surface coordinating with valve body, in a side of sealing body 5, be provided with a reinforcement deflector being fixedly connected with seal 5, this reinforcement deflector is made up of with the link arm that is separately positioned on stiffening plate 12 two ends a stiffening plate 12 that is parallel to seal 5, described stiffening plate 12 is supported and fixed on seal 5 by link arm, make the guide channel that between stiffening plate 12 and seal 5, formation is passed through for fluid, periphery at seal 5 opposite sides is provided with step, in the groove that step forms, be provided with sealing seat 7, sealing seat 7 is fixed and clamped by hex head bolt 4 by pressing plate 6.
Described valve rod is made up of upper valve rod 1 and lower valve rod 8 two-part, and upper valve rod 1 is connected with the link arm at stiffening plate 12 two ends respectively with lower valve rod 8, and upper valve rod 1 is connected with driving mechanism through valve body 3.
On the link arm at described stiffening plate 12 two ends, be equipped with the fitting seat 14 for valve rod is installed, in fitting seat 14, be provided with mounting hole.
Described valve rod comprises upper valve rod 1 and lower valve rod 8, one end of upper valve rod 1 and lower valve rod 8 is separately positioned in two described mounting holes, use butterfly plate fixed pin 2 that upper valve rod 1 is fixedly connected with corresponding fitting seat 14 respectively with lower valve rod 8, the other end of upper valve rod 1 and lower valve rod 8 matches with corresponding through hole on valve body 3 respectively, between lower valve rod 8 and corresponding mounting hole, be provided with O shape circle, in order to sealing, on the mounting hole corresponding with the underpart of lower valve rod 8, be provided with bottom 11, between the underpart of lower valve rod 8 and bottom 11, be provided with spacer 10.
In described guide channel, be provided with the guide plate 13 being supported between stiffening plate 12 and seal 5.
At described butterfly plate during in maximum opening, described guide plate 13 and seal are all parallel to the axis of valve body 3.
Described guide plate 13 is obliquely installed with respect to seal 5.
Described stiffening plate 12 with the width of the perpendicular direction of guide channel be seal 5 diameters 0.55-0.58 doubly, the 1.20-1.25 that the direction length that it parallels with guide channel is its width doubly, the structure of this ratio not only can meet butterfly plate intensity and reduce the needs of flow resistance, and more economically.
Described guide plate 13 is plural piece, all be trapezoidal, trapezoidal short base is consistent with the length of stiffening plate 12 and be fixedly connected with it, and trapezoidal long base is connected with seal 5, and plural piece guide plate 13 successively end-to-end forms the supporting structure that cross section is W shape.
For the pressure that reasonable distribution butterfly plate bears, described stiffening plate 12 is identical with the thickness of guide plate 13, and the thickness of the Thickness Ratio stiffening plate 12 of described seal 5 is bigger, the thickness large 1/7th of the Thickness Ratio stiffening plate 12 of this embodiment seal 5.
Claims (6)
1. an eccentric low flow resistance butterfly valve, comprise valve body (3), butterfly plate and valve rod, described butterfly plate has a discoid seal (5), sealing body (5) is arranged in valve body (3) by valve rod is rotating, on the circumference of sealing body (5), be provided with the sealing surface coordinating with valve body, it is characterized in that: in a side of sealing body (5), be provided with a reinforcement deflector being fixedly connected with seal (5), the link arm that this reinforcement deflector is parallel to the stiffening plate (12) of seal (5) by one and is separately positioned on stiffening plate (12) two ends forms, described stiffening plate (12) is supported and fixed on seal (5) by link arm, make the guide channel that between stiffening plate (12) and seal (5), formation is passed through for fluid, described valve rod is made up of upper valve rod (1) and lower valve rod (8) two-part, upper valve rod (1) is connected with the link arm at stiffening plate (12) two ends respectively with lower valve rod (8), and upper valve rod (1) is connected with driving mechanism through valve body (3).
2. a kind of three eccentric low flow resistance butterfly valves according to claim 1, is characterized in that: on the link arm at described stiffening plate (12) two ends, be equipped with the fitting seat (14) for valve rod is installed, fitting seat is provided with mounting hole in (14).
3. a kind of three eccentric low flow resistance butterfly valves according to claim 1, is characterized in that: in described guide channel, be provided with the guide plate (13) being supported between stiffening plate (12) and seal (5).
4. a kind of three eccentric low flow resistance butterfly valves according to claim 3, is characterized in that: at described butterfly plate during in maximum opening, described guide plate (13) and seal are all parallel to the axis of valve body (3).
5. a kind of three eccentric low flow resistance butterfly valves according to claim 4, is characterized in that: described guide plate (13) is obliquely installed with respect to seal (5).
6. a kind of three eccentric low flow resistance butterfly valves according to claim 5, it is characterized in that: described stiffening plate (12) with the width of the perpendicular direction of guide channel be seal (5) diameter 0.55-0.58 doubly, the 1.20-1.25 that the direction length that it parallels with guide channel is its width doubly, described guide plate (13) is plural piece, all be trapezoidal, the length of trapezoidal short base and stiffening plate (12) is consistent and be fixedly connected with it, trapezoidal long base is connected with seal (5), plural number piece guide plate (13) successively end-to-end forms the supporting structure that cross section is W shape.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320791030.XU CN203656219U (en) | 2013-12-05 | 2013-12-05 | Low-flow-resistance three-eccentric center butterfly valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320791030.XU CN203656219U (en) | 2013-12-05 | 2013-12-05 | Low-flow-resistance three-eccentric center butterfly valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203656219U true CN203656219U (en) | 2014-06-18 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320791030.XU Expired - Fee Related CN203656219U (en) | 2013-12-05 | 2013-12-05 | Low-flow-resistance three-eccentric center butterfly valve |
Country Status (1)
| Country | Link |
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| CN (1) | CN203656219U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103629372A (en) * | 2013-12-05 | 2014-03-12 | 河南煜达阀门制造有限公司 | Three-eccentric center low-flow-resistance butterfly valve |
-
2013
- 2013-12-05 CN CN201320791030.XU patent/CN203656219U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103629372A (en) * | 2013-12-05 | 2014-03-12 | 河南煜达阀门制造有限公司 | Three-eccentric center low-flow-resistance butterfly valve |
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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: 20140618 Termination date: 20211205 |