CN203784322U - Multi-decentration bi-directional sealing butterfly valve - Google Patents
Multi-decentration bi-directional sealing butterfly valve Download PDFInfo
- Publication number
- CN203784322U CN203784322U CN201420214178.1U CN201420214178U CN203784322U CN 203784322 U CN203784322 U CN 203784322U CN 201420214178 U CN201420214178 U CN 201420214178U CN 203784322 U CN203784322 U CN 203784322U
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Abstract
The utility model relates to a multi-decentration bi-directional sealing butterfly valve and effectively solves the problems that the butterfly valve is easy to wear, the service life is short, the sealing effect is bad, and the butterfly valve can only be used in a unidirectional sealing manner. The utility model adopts the technical scheme as follows: the multi-decentration bi-directional sealing butterfly valve comprises a valve body, a valve plate and a valve shaft, wherein the valve shaft is horizontally mounted on the valve body; the valve plate is mounted on the valve shaft in the inner cavity of the valve body, a ring-shaped valve seat arranged aslant is arranged on the inner wall of the valve body in the circumferential direction, a sealing ring, corresponding to the sealing surface of the ring-shaped valve seat, is mounted on the outer side of the valve plate, the longitudinal center line of the cross section of the valve shaft is overlapped with the longitudinal center line of the cross section of the valve body, and the horizontal center line of the cross section of the valve shaft is deviated from the horizontal center line of the cross section of the valve body. The multi-decentration bi-directional sealing butterfly valve is novel and unique in structure, simple and reasonable, low in cost, reliable in sealing performance, more labor-saving in opening, flexible, portable, energy-saving, safe and reliable, convenient to use, and good in effect, and is an innovative butterfly valve.
Description
Technical field
The utility model relates to bidirectional sealed butterfly valve, particularly a kind of multi-eccentric bidirectional sealed butterfly valve.
Background technique
Existing bidirectional sealed butterfly valve mostly is single eccentric and two eccentric metal sealed butterfly valves.Its structure is divided into two kinds: one is on valve body, to be furnished with metallic packing ring, and rubber 0 type ring is housed behind, and no matter this valve is forward or backwards after pressure-bearing, and seal ring is all removable on valve body center line, is fluctuate hermetical ring, thereby reaches two way sealed object; But due to the existence of rubber 0 type ring, and two way sealed is linear sealing, be therefore easy to damage, therefore cause seal leakage, also restriction to some extent of operating temperature simultaneously.Another kind is metal elastic-sealed ring sealing, and metal elastic-sealed ring is flexible, therefore intensity is lower, otherwise just nonelastic; And metallic sealing section is also linear sealing, easily an ancient egg-shaped, holed wind instrument wound, easy to wear, so short easy leakage of life-span, sealing load is lower.The three eccentric metal seal butterfly valve of extensive use at present, all seems better at aspects such as high temperature, high pressure, sealability, the flexible performance of switch, working lifes; It has overcome the shortcoming of all butterfly valves in the past, but blemish in an otherwise perfect thing is can only do one-way sealing to use; Therefore, the improvement and bring new ideas of butterfly valve is imperative.
Summary of the invention
For above-mentioned situation, for overcoming the defect of prior art, the object of the utility model is just to provide a kind of multi-eccentric bidirectional sealed butterfly valve, the problem that can effectively solve that butterfly valve is easy to wear, working life is short, sealing effect is poor and can only one-way sealing use.
The technological scheme that the utility model solves is, comprise valve body, valve plate and valve shaft, valve shaft level is contained on valve body, body cavity is equipped with valve plate on valve shaft, valve interior wall is along being circumferentially provided with the ring-shaped valve seats that is skewed layout, the seal ring corresponding with the sealing surface of ring-shaped valve seats is equipped with in the outside of valve plate, and the longitudinal midline of valve shaft cross section and the longitudinal midline of valve body coincide, and the horizontal central line of horizontal central line and valve body deviates.
The sealing surface of described ring-shaped valve seats is oval-shaped inclined-plane, and oblique angle a is 3-8 °.
The utility model novel structure uniqueness, advantages of simple, cost is low, and sealability is reliable, opens more laborsavingly, flexibly, light, energy-conservation, safe and reliable, easy to use, effective, is the innovation on butterfly valve.
Brief description of the drawings
Fig. 1 is the sectional view of the utility model valve body.
Fig. 2 is the right elevation of the utility model Fig. 1.
Fig. 3 is the eccentric schematic diagram of the utility model.
Embodiment
Below in conjunction with accompanying drawing, embodiment of the present utility model is described in further detail.
Provided by Fig. 1-2, the utility model comprises valve body, valve plate and valve shaft, valve shaft 3 levels are contained on valve body 1, valve body 1 inner chamber is equipped with valve plate 4 on valve shaft 3, valve body 1 inwall is along being circumferentially provided with the ring-shaped valve seats 2 that is skewed layout, the seal ring corresponding with the sealing surface 2a of ring-shaped valve seats 25 is equipped with in the outside of valve plate 4, and the longitudinal midline of valve shaft 3 cross sections and the longitudinal midline 6 of valve body 1 coincide, and horizontal central line 7 deviates with the horizontal central line 8 of valve body 1.
For ensureing using effect, the sealing surface 2a of described ring-shaped valve seats 2 is oval-shaped inclined-plane, and oblique angle a is 3-8 °;
The angle of inclination b of described ring-shaped valve seats 2 is 8-12 °;
Described valve shaft 3 is contained on valve body 1 through bearing 10 levels, and valve body is stretched out respectively at two ends, and one end is connected with drive unit 12, and the other end is equipped with end cap 7;
Described valve body 1 is contained on support 13, and drive unit 12 is fixed on support 13, is integrally formed structure;
Described valve plate 4 is fixed on valve shaft 3 through bolt 9;
The outside of described valve plate 4 is through regulating pressing plate that seal ring 5 is housed.
When the utility model uses, as shown in Figure 3, valve body transversal centerline 8 and longitudinal midline 6 form a valve body coordinate; Ring-shaped valve seats Central Symmetry transversal line F and ring-shaped valve seats Central Symmetry vertical axis H form again a valve seat coordinate;
Because being skewed, ring-shaped valve seats is arranged on valve interior wall, increased a sealing rotary parallactic angle (angle of inclination of ring-shaped valve seats) b, and the horizontal central line 7 of valve shaft 3 cross sections deviates with the horizontal central line 8 of valve body 1, now, the horizontal central line 7 of valve shaft 3 cross sections departs from a valve body bias of certain distance generation with valve body transversal centerline 8; Valve shaft 3 cross sections depart from a valve plate eccentric of certain distance generation with respect to transversal line P1 and the ring-shaped valve seats Central Symmetry transversal line F of valve plate; Valve shaft 3 cross sections depart from a valve shaft bias of certain distance generation with respect to longitudinal axis P2 and the ring-shaped valve seats Central Symmetry vertical axis H of valve plate; Valve body bias, valve plate eccentric and valve shaft bias are unequal mutually, and valve body bias is larger, and valve plate eccentric is less and level off to zero; Therefore it is unequal and make the deficiency of two way sealed difficulty that the utility model has changed both sides after eccentric, the valve plate pressurized identical with valve plate eccentric of the valve body of former three eccentric metal seal butterfly valve.Due to the design of multi-eccentric, so under external force, valve plate closes tighter and tighter, and under closed condition, no matter valve plate is that pressure-bearing is all without revealing forward or backwards, and sealability is reliable.Valve plate switching path angle is that 90 degree deduct sealing rotary parallactic angle b simultaneously, makes valve plate switch angle be less than 90 degree, departs from valve body sealing surface completely in butterfly plate unlatching moment, and butterfly valve is opened more laborsaving, flexibly, light, energy-conservation.Ring-shaped valve seats is by alloy welding deposit, goes out the inclined-plane of elliptic curve through processes, with the forming surface sealing that matches of valve plate elliptic curve inclined-plane, not only extended the working life of butterfly valve.And make the sealing of butterfly valve more safe and reliable, easy to use, effective, and be the innovation on butterfly valve, there are good society and economic benefit.
Claims (7)
1. a multi-eccentric bidirectional sealed butterfly valve, comprise valve body, valve plate and valve shaft, it is characterized in that, valve shaft (3) level is contained on valve body (1), valve body (1) inner chamber is equipped with valve plate (4) on valve shaft (3), valve body (1) inwall is along being circumferentially provided with the ring-shaped valve seats (2) that is skewed layout, the seal ring (5) corresponding with the sealing surface (2a) of ring-shaped valve seats (2) is equipped with in the outside of valve plate (4), the longitudinal midline of valve shaft (3) cross section and the longitudinal midline (6) of valve body (1) coincide, horizontal central line (7) deviates with the horizontal central line (8) of valve body (1).
2. multi-eccentric bidirectional sealed butterfly valve according to claim 1, is characterized in that, the sealing surface (2a) of described ring-shaped valve seats (2) is oval-shaped inclined-plane, and oblique angle a is 3-8 °.
3. multi-eccentric bidirectional sealed butterfly valve according to claim 1, is characterized in that, the angle of inclination b of described ring-shaped valve seats (2) is 8-12 °.
4. multi-eccentric bidirectional sealed butterfly valve according to claim 1, it is characterized in that, it is upper that described valve shaft (3) is contained in valve body (1) through bearing (10) level, and valve body is stretched out respectively at two ends, one end is connected with drive unit (12), and the other end is equipped with end cap (7).
5. multi-eccentric bidirectional sealed butterfly valve according to claim 4, is characterized in that, it is upper that described valve body (1) is contained in support (13), and it is upper that drive unit (12) is fixed on support (13), is integrally formed structure.
6. multi-eccentric bidirectional sealed butterfly valve according to claim 1, is characterized in that, described valve plate (4) is fixed on valve shaft (3) through bolt (9).
7. multi-eccentric bidirectional sealed butterfly valve according to claim 1, is characterized in that, the outside of described valve plate (4) is through regulating pressing plate that seal ring (5) is housed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420214178.1U CN203784322U (en) | 2014-04-29 | 2014-04-29 | Multi-decentration bi-directional sealing butterfly valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420214178.1U CN203784322U (en) | 2014-04-29 | 2014-04-29 | Multi-decentration bi-directional sealing butterfly valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203784322U true CN203784322U (en) | 2014-08-20 |
Family
ID=51320510
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420214178.1U Expired - Lifetime CN203784322U (en) | 2014-04-29 | 2014-04-29 | Multi-decentration bi-directional sealing butterfly valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203784322U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104455623A (en) * | 2014-11-26 | 2015-03-25 | 苏州福润机械有限公司 | Two-way sealing butterfly valve |
| CN107489774A (en) * | 2017-09-30 | 2017-12-19 | 山西好利阀机械制造有限公司 | The oblique sealing surface valve seat of butterfly valve |
| CN108953625A (en) * | 2017-05-18 | 2018-12-07 | 德莱赛公司 | It realizes and the butterfly valve of valve assembly reliably sealed is arranged |
-
2014
- 2014-04-29 CN CN201420214178.1U patent/CN203784322U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104455623A (en) * | 2014-11-26 | 2015-03-25 | 苏州福润机械有限公司 | Two-way sealing butterfly valve |
| CN108953625A (en) * | 2017-05-18 | 2018-12-07 | 德莱赛公司 | It realizes and the butterfly valve of valve assembly reliably sealed is arranged |
| CN108953625B (en) * | 2017-05-18 | 2022-12-02 | 德莱赛公司 | Butterfly valve arrangement for achieving reliable sealing of a valve assembly |
| CN107489774A (en) * | 2017-09-30 | 2017-12-19 | 山西好利阀机械制造有限公司 | The oblique sealing surface valve seat of butterfly valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140820 |