CN204387358U - Dry shaft type double eccentric butterfly valve - Google Patents
Dry shaft type double eccentric butterfly valve Download PDFInfo
- Publication number
- CN204387358U CN204387358U CN201420831829.1U CN201420831829U CN204387358U CN 204387358 U CN204387358 U CN 204387358U CN 201420831829 U CN201420831829 U CN 201420831829U CN 204387358 U CN204387358 U CN 204387358U
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- axle sleeve
- valve rod
- valve body
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Abstract
The utility model discloses a kind of dry shaft type double eccentric butterfly valve, comprise valve body, valve plate, upper valve rod, lower valve rod, be set in the axle sleeve that upper valve rod and lower valve rod also seal between maintenance and the gland being fixedly connected with also positioning shaft sleeve respectively with valve body respectively, the inner and the valve plate of described axle sleeve hold mutually and keep sealing, described gland comprises pressure ring and pressure cylinder, described pressure ring and valve body are bolted to connection, and described pressure cylinder holds mutually with the outer end of described axle sleeve.Butterfly valve of the present utility model, adopt two eccentric design, effectively reduce starting torque, after opening, valve plate departs from sealing surface completely simultaneously, effectively improves working life, simultaneously, adopt axle sleeve to the design of valve stem seal, between axle sleeve and valve body, between axle sleeve and valve rod, between axle sleeve and valve plate, seal ring is set respectively, utilize seal ring effectively ensure valve rod not with external contact, improve the corrosion resistance of valve rod.
Description
Technical field
The utility model relates to valve technology field, particularly relates to a kind of dry shaft type double eccentric butterfly valve.
Background technique
Present butterfly valve is used in various pipeline widely, conventional butterfly valve shaft and physical contact between media, and butterfly plate is also through hole, and therefore the axis hole of valve body and butterfly plate often occurs corrosion phenomena, affects water quality.Especially when fed sheet of a media has corrosivity, if fed sheet of a media is seawater etc., because seawater is corrosive, very high to the requirement for anticorrosion of valve internal, conventional butterfly valve shaft and physical contact between media, often there is phenomenon of getting rusty in valve shaft, permanent use will rotate dumb, moment of torsion becomes large, even stuck phenomenon occurs.
Model utility content
The purpose of this utility model is the technological deficiency for existing in prior art, and provides a kind of dry shaft type double eccentric butterfly valve.
The technological scheme adopted for realizing the purpose of this utility model is:
A kind of dry shaft type double eccentric butterfly valve, comprise valve body, valve plate, upper valve rod, lower valve rod, be set in the axle sleeve that upper valve rod and lower valve rod also seal between maintenance and the gland being fixedly connected with also positioning shaft sleeve respectively with valve body respectively, the inner and the valve plate of described axle sleeve hold mutually and keep sealing, described gland comprises pressure ring and pressure cylinder, described pressure ring and valve body are bolted to connection, and described pressure cylinder holds mutually with the outer end of described axle sleeve.
The top and bottom of described valve body are respectively arranged with the positioning chamber inserted the axle sleeve the inner described in permission, are provided with seal ring between described axle sleeve interior edge face and valve body.
Between described axle sleeve and valve body, and be respectively arranged with seal ring between axle sleeve and upper valve rod or lower valve rod.
Described pressure cylinder and described valve body, and be respectively arranged with seal ring between pressure cylinder and upper valve rod or lower valve rod.
Described upper valve rod is fixedly connected with described valve plate respectively by pin with lower valve rod,
Described valve plate is provided with built-up welding stainless steel lining.
Compared with prior art, the beneficial effects of the utility model are:
Butterfly valve of the present utility model, adopt two eccentric design, effectively reduce starting torque, after opening, valve plate departs from sealing surface completely simultaneously, effectively improve working life, simultaneously, adopt axle sleeve to the design of valve stem seal, between axle sleeve and valve body, between axle sleeve and valve rod, between axle sleeve and valve plate, seal ring is set respectively, utilize seal ring effectively ensure valve rod not with external contact, improve the corrosion resistance of valve rod, simultaneously, because adopt the mode of pressure ring fixed axle sleeve, in use, by coordinating the upper gland of adjustment and lower gland, the upper-lower position holding adjustment valve plate step by step can be utilized, moment is opened in further control.
Accompanying drawing explanation
Figure 1 shows that the structural representation of dry shaft type double eccentric butterfly valve of the present utility model;
Figure 2 shows that the cross section structure schematic diagram shown in Fig. 1.
Embodiment
Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail.Should be appreciated that specific embodiment described herein only in order to explain the utility model, and be not used in restriction the utility model.
As illustrated in fig. 1 and 2, dry shaft type double eccentric butterfly valve of the present utility model comprises valve body 1, the valve plate 2 of two bias design, upper valve rod 3, lower valve rod 4, is set in upper valve rod and lower valve rod keeps the axle sleeve of sealing and is fixedly connected with valve body respectively and the gland of positioning shaft sleeve respectively, the inner and the valve plate of described axle sleeve hold mutually and keep sealing, described gland comprises pressure ring and pressure cylinder, described pressure ring and valve body are bolted to connection, and described pressure cylinder holds mutually with the outer end of described axle sleeve.Described butterfly valve is double eccentric butterfly valve, and described valve plate and valve body contact place are provided with built-up welding stainless steel lining, and described upper valve rod is fixedly connected with described valve plate respectively by pin with lower valve rod.Wherein, it should be noted that, axle sleeve comprises Upper shaft sleeve 5 corresponding with upper valve rod and lower valve rod respectively and Lower shaft sleeve 6, and gland comprises the upper gland 7 be fixedly connected with the valve neck top of valve body respectively and the lower gland 8 be fixedly connected with body base.
Butterfly valve of the present utility model, adopt two eccentric design, effectively reduce starting torque, after opening, valve plate departs from sealing surface completely simultaneously, effectively improve working life, simultaneously, adopt axle sleeve to the design of valve stem seal, between axle sleeve and valve body, between axle sleeve and valve rod, between axle sleeve and valve plate, seal ring is set respectively, utilize seal ring effectively ensure valve rod not with external contact, improve the corrosion resistance of valve rod, simultaneously, multistage dense seal is utilized to achieve sealing in valve pocket, and because adopt the mode of pressure ring fixed axle sleeve, in use, by coordinating the locking degree of the upper gland of adjustment and lower gland and valve body, namely unscrew ordinatedly or lock bolt, the upper-lower position holding adjustment valve plate step by step can be utilized, moment is opened in further control.
Specifically, described valve body top and bottom are respectively arranged with the positioning chamber that the axle sleeve the inner described in permission is inserted, seal ring is provided with between described axle sleeve interior edge face and valve body, seal ring is respectively arranged with between described axle sleeve and valve body and upper valve rod or lower valve rod, seal ring is provided with between described pressure cylinder and described valve body and upper valve rod or lower valve rod, when arranging seal ring, corresponding parts offering ring groove, repeats no more herein.
Adopt multi-stage sealed ring type structure, the seal ring designed step by step forms multistage stop to liquid, terminal with compact integral structure and can ensure sealing effect.
The above is only preferred implementation of the present utility model; it should be noted that; for those skilled in the art; under the prerequisite not departing from the utility model principle; can also make some improvements and modifications, these improvements and modifications also should be considered as protection domain of the present utility model.
Claims (6)
1. a dry shaft type double eccentric butterfly valve, it is characterized in that, comprise valve body, valve plate, upper valve rod, lower valve rod, be set in the axle sleeve that upper valve rod and lower valve rod also seal between maintenance and the gland being fixedly connected with also positioning shaft sleeve respectively with valve body respectively, the inner and the valve plate of described axle sleeve hold mutually and keep sealing, described gland comprises pressure ring and pressure cylinder, described pressure ring and valve body are bolted to connection, and described pressure cylinder holds mutually with the outer end of described axle sleeve.
2. dry shaft type double eccentric butterfly valve as claimed in claim 1, is characterized in that, the top and bottom of described valve body are respectively arranged with the positioning chamber inserted the axle sleeve the inner described in permission, are provided with seal ring between described axle sleeve interior edge face and valve body.
3. dry shaft type double eccentric butterfly valve as claimed in claim 1, is characterized in that, between described axle sleeve and valve body, and is respectively arranged with seal ring between axle sleeve and upper valve rod or lower valve rod.
4. dry shaft type double eccentric butterfly valve as claimed in claim 1, is characterized in that, described pressure cylinder and described valve body, and is respectively arranged with seal ring between pressure cylinder and upper valve rod or lower valve rod.
5. dry shaft type double eccentric butterfly valve as claimed in claim 1, it is characterized in that, described upper valve rod is fixedly connected with described valve plate respectively by pin with lower valve rod.
6. dry shaft type double eccentric butterfly valve as claimed in claim 1, is characterized in that, described valve plate is provided with built-up welding stainless steel lining.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420831829.1U CN204387358U (en) | 2014-12-23 | 2014-12-23 | Dry shaft type double eccentric butterfly valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420831829.1U CN204387358U (en) | 2014-12-23 | 2014-12-23 | Dry shaft type double eccentric butterfly valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204387358U true CN204387358U (en) | 2015-06-10 |
Family
ID=53360080
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420831829.1U Active CN204387358U (en) | 2014-12-23 | 2014-12-23 | Dry shaft type double eccentric butterfly valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204387358U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107606254A (en) * | 2017-10-25 | 2018-01-19 | 杭州老板电器股份有限公司 | Check-valves and central cooking fume control equipment |
| CN110425292A (en) * | 2019-08-21 | 2019-11-08 | 天津市塘沽沃特斯阀门有限公司 | Lower resistance high pressure double eccentric butterfly valve |
-
2014
- 2014-12-23 CN CN201420831829.1U patent/CN204387358U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107606254A (en) * | 2017-10-25 | 2018-01-19 | 杭州老板电器股份有限公司 | Check-valves and central cooking fume control equipment |
| CN107606254B (en) * | 2017-10-25 | 2024-04-12 | 杭州老板电器股份有限公司 | Check valve and central oil smoke clarification plant |
| CN110425292A (en) * | 2019-08-21 | 2019-11-08 | 天津市塘沽沃特斯阀门有限公司 | Lower resistance high pressure double eccentric butterfly valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |