CN102537380A - Bidirectional high-performance soft sealing butterfly valve - Google Patents
Bidirectional high-performance soft sealing butterfly valve Download PDFInfo
- Publication number
- CN102537380A CN102537380A CN2010105955631A CN201010595563A CN102537380A CN 102537380 A CN102537380 A CN 102537380A CN 2010105955631 A CN2010105955631 A CN 2010105955631A CN 201010595563 A CN201010595563 A CN 201010595563A CN 102537380 A CN102537380 A CN 102537380A
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- valve
- butterfly
- sealing
- ring
- butterfly valve
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Abstract
The invention relates to the technical field of valves, in particular to a bidirectional high-performance soft sealing butterfly valve, which is characterized by comprising a valve body, a valve stem, an inner hexagon screw, an O-shaped sealing ring, a pin, a butterfly plate, a non-metal sealing ring, a press plate ring and an operating mechanism. The bidirectional high-performance soft sealing butterfly valve is provided with the non-metal sealing ring, the non-metal sealing ring is embedded on the valve body and is in compression moulding by a special mold, the bidirectional high-performance soft sealing butterfly valve is further provided with the press plate ring, the press plate ring is provided with the O-shaped sealing ring so as to stop media from leaking at contact positions of the valve body and a press plate, the outer edge of the butterfly plate of the butterfly valve needs to be processed and ground so as to be arc-shaped, the butterfly plate is connected with the valve stem via the pin or a flat key, and the valve stem is connected with the operating mechanism. After a sealing structure is improved, the sealing structure of the valve can keep enough sealing force regardless of forward or reverse pressure, and accordingly sealing is guaranteed.
Description
Technical field
The present invention relates to valve technology field, especially a kind of two-way high-performance soft seal butterfly valve.
Background technique
Butterfly valve is to be that a kind of valve with the regulated fluid passage is opened, closed to about 90 ° of butterfly plate reciprocating rotatings with the disc type open-shut device.Existing universal soft sealing butterfly valve adopts two eccentric structures to design; Its valve seat is directly built-up welding stainless steel formation on valve body, and nonmetal seal ring is fixed on the butterfly plate through the pressing plate circle, and the valve seat precision machining is tapered; Nonmetal seal ring has the direct compression moulding of mould, and its outer rim is circular-arc.Operating device drives valve rod, and nonmetal seal ring is rotated with butterfly plate, and the outer rim of seal ring is squeezed in and produces sealing force realization sealing on the valve body sealing surface when closed position.But the butterfly valve of this structure is because its structural feature has determined medium to flow into from an end of valve, if medium oppositely flows into, sealing effect is not obvious, and promptly existing universal soft sealing butterfly valve has medium one-way flow property.
Summary of the invention
In order to overcome the problem in the above-mentioned background technology, the invention provides a kind of simple in structurely, the two way sealed effect is good high-performance soft seal butterfly valve all, and it has effectively been eliminated because the valves leakage problem that the medium reverse flow produces.
A kind of two-way high-performance soft seal butterfly valve; It is characterized in that; Comprise: valve body 1, valve rod 2, socket head screw 3, O RunddichtringO 4, pin 5, butterfly plate 6, nonmetal seal ring 7, pressing plate circle 8, operating device 9, said a kind of two-way high-performance soft seal butterfly valve is provided with nonmetal seal ring 7, and said nonmetal seal ring 7 is embedded on the valve body 1; And at the area of contact of its back side increase with medium, the pressure medium that seal ring bears when increasing back-pressure; Said nonmetal seal ring 7 is specialized mould compression moulding, does not need factory process, and smooth surface, zero defect, and interchangeability is good; Said a kind of two-way high-performance soft seal butterfly valve body 1 is provided with pressing plate circle 8, on the said pressing plate circle 8 O RunddichtringO 4 is set, and stops medium to be leaked by the contacting point of valve body 1 and pressing plate 8.Circular arc need processed and grind to form to said butterfly valve butterfly plate 6 outer rims, and said butterfly plate 6 is connected with valve rod 2 through pin 5 or flat key, and described valve rod 2 is connected with operating device 9.
The present invention is through after improving sealing configuration, and no matter forward is still oppositely exerted pressure, and the sealing configuration of valve can both keep enough sealing forces, guarantees sealing.
Description of drawings
Fig. 1 is a kind of sectional view of two-way high-performance soft seal butterfly valve
Fig. 2 is a kind of outline drawing of two-way high-performance soft seal butterfly valve
Sealing schematic representation when Fig. 3 exerts pressure for medium forward of the present invention
Sealing schematic representation when Fig. 4 oppositely exerts pressure for medium of the present invention
Embodiment
Below in conjunction with accompanying drawing the present invention is done further explanation.
As shown in Figure 1, butterfly valve of the present invention comprises valve body 1, valve rod 2, and wherein valve rod 25 is connected with butterfly plate 6 through pinning, and the rotational motion of operating device 9 is passed on the butterfly plate 6 through valve rod 2; Pressing plate circle 8 is pressed onto nonmetal seal ring 7 on the valve body 1 through socket head screw 3, and O RunddichtringO 4 is set on the pressing plate circle 8, stops medium to be leaked by the contacting point of valve body 1 and pressing plate 8.
As shown in Figure 3, during the medium forward flow, the gradually reduce seal ring 7 of non-metallic elastic material of throttle down, butterfly plate 6 is realized the forwards sealing, and the size of sealing force is determined by decrement.When product specification and assembling, make butterfly plate 6 external arc peaks depart from the sealing surface center, like this; Even if in use for some time; Still can make butterfly plate 6 external arc peaks near the sealing surface center during nonmetal seal ring 7 small amount of wear, make seal ring keep enough decrements through the limit stoper on the adjustment operating device 9; Realize sealing, thereby prolong the working life of valve.
As shown in Figure 4, during the medium reverse flow, throttle down; Butterfly plate 6 receives medium power effect meeting to produce micro-deformation left, and the decrement of soft sealing material is reduced, and sealing force reduces; Be unfavorable for the sealing of valve, but simultaneously because the area that seal ring 7 right sides contact with medium is big, with making seal ring 7 produce huge active force left; Force it to press to butterfly plate 6, remedy because the sealing force that the stress deformation of butterfly plate descends realizes oppositely sealing.
The present invention is fit to be applied in the pressure piping MEDIA FLOW in the system that reverse requirement is arranged because forward seals with oppositely realizing very much, through selecting different nonmetal soft sealing materials for use, can satisfy in the different system requirement to medium temperature.
Claims (1)
1. a two-way high-performance soft seal butterfly valve is characterized in that, comprising: valve body, valve rod, socket head screw, O RunddichtringO, pin, butterfly plate, nonmetal seal ring, pressing plate circle, operating device; Said a kind of two-way high-performance soft seal butterfly valve is provided with nonmetal seal ring; Said nonmetal seal ring is embedded on the valve body, and said nonmetal seal ring is specialized mould compression moulding, and said butterfly valve body is provided with the pressing plate circle; On the said pressing plate circle O RunddichtringO is set; Circular arc need processed and grind to form to said butterfly valve butterfly plate outer rim, and said butterfly plate is connected with valve rod through pin or flat key, and described valve rod is connected with operating device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010105955631A CN102537380A (en) | 2010-12-17 | 2010-12-17 | Bidirectional high-performance soft sealing butterfly valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010105955631A CN102537380A (en) | 2010-12-17 | 2010-12-17 | Bidirectional high-performance soft sealing butterfly valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102537380A true CN102537380A (en) | 2012-07-04 |
Family
ID=46345019
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010105955631A Pending CN102537380A (en) | 2010-12-17 | 2010-12-17 | Bidirectional high-performance soft sealing butterfly valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102537380A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104595506A (en) * | 2015-02-09 | 2015-05-06 | 胡和锁 | Butterfly valve seal structure |
| CN105221765A (en) * | 2015-10-28 | 2016-01-06 | 浙江顺源阀门有限公司 | A kind of eccentric ball-type butterfly valve |
| CN114110184A (en) * | 2021-11-15 | 2022-03-01 | 上海凯工阀门股份有限公司 | Bidirectional high-pressure blowout-prevention pressure self-sealing rubber sealing ring butterfly valve |
-
2010
- 2010-12-17 CN CN2010105955631A patent/CN102537380A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104595506A (en) * | 2015-02-09 | 2015-05-06 | 胡和锁 | Butterfly valve seal structure |
| CN105221765A (en) * | 2015-10-28 | 2016-01-06 | 浙江顺源阀门有限公司 | A kind of eccentric ball-type butterfly valve |
| CN114110184A (en) * | 2021-11-15 | 2022-03-01 | 上海凯工阀门股份有限公司 | Bidirectional high-pressure blowout-prevention pressure self-sealing rubber sealing ring butterfly valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| DD01 | Delivery of document by public notice |
Addressee: Yang Zhongyi Document name: Notification of before Expiration of Request of Examination as to Substance |
|
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20120704 |