CN101713467A - Valve shaft supporting structure of large-diameter butterfly valve - Google Patents
Valve shaft supporting structure of large-diameter butterfly valve Download PDFInfo
- Publication number
- CN101713467A CN101713467A CN200910232038A CN200910232038A CN101713467A CN 101713467 A CN101713467 A CN 101713467A CN 200910232038 A CN200910232038 A CN 200910232038A CN 200910232038 A CN200910232038 A CN 200910232038A CN 101713467 A CN101713467 A CN 101713467A
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- Prior art keywords
- valve
- valve shaft
- supporting structure
- diameter butterfly
- shaft supporting
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Abstract
The invention discloses a valve shaft supporting structure of a large-diameter butterfly valve, which can prevent a valve shaft from sinking. The valve shaft supporting structure comprises a valve shaft; the two ends of the valve shaft are arranged outside a valve body; and the two ends of the valve shaft are respectively arranged on a bearing seat through a supporting bearing. The valve shaft supporting structure has the advantages that the valve shaft supporting structure of the large-diameter butterfly valve adopting the mode of supporting by the two ends of the valve shaft can effectively eradicate the phenomenon of the sinking of the valve shaft and a valve plate, avoid the phenomenon of the leakage of a sealing pair caused by the misplacement of the sealing pair, and simultaneously avoid the phenomenon of expansion and shaft hung caused by the variation of temperature of pipeline media, the structure is simple, the maintenance period of the large-diameter butterfly valve is prolonged, and the maintenance cost of the large-diameter butterfly valve is effectively reduced.
Description
Technical field
The present invention relates to a kind of butterfly valve, refer more particularly to a kind of valve shaft supporting structure of large-diameter butterfly valve.
Background technique
Valve shaft supporting in the existing reed valve adopts the valve shaft bottom that block bearing is set mostly, and the valve shaft top is not provided with bearing and directly is connected with drive unit.Existing valve shaft supporting structure, very easily cause valve plate to sink, cause the dislocation of valve plate and valve base sealing pair, cause that sealing effect descends, especially in the using process of large-diameter butterfly valve, manifest comparatively serious, because the demolition and maintenance of bigbore butterfly valve will be employed large-scale lifting appliance and all multidisciplinary cooperations, the replacing maintenance cost is higher, therefore, prolong the maintenance period of large bore valves, be the effective way that reduces maintenance cost, reducing or eliminating unfavorable factor that valve plate sinks to bringing just becomes butterfly valve and manufactures the direction of pursuing.
Summary of the invention
Technical problem to be solved by this invention is: a kind of valve shaft supporting structure that can prevent the large-diameter butterfly valve that valve shaft sinks is provided.
In order to solve the problems of the technologies described above, the technical solution used in the present invention is: the valve shaft supporting structure of large-diameter butterfly valve, comprise: valve shaft, the two ends of described valve shaft all are arranged on the outside of valve body, and the two ends of valve shaft all are arranged on the bearing support by block bearing respectively.
Advantage of the present invention is: the valve shaft supporting structure of the large-diameter butterfly valve of said structure, adopt the mode of valve shaft two supports, can effectively stop the sinkage of valve shaft, valve plate, the seal leak phenomenon of avoiding the sealing pair dislocation to produce, simultaneously, the expansion seize phenomenon that can avoid the pipeline medium temperature variation to produce, simple in structure, prolong the maintenance period of large-diameter butterfly valve, effectively reduced the maintenance cost of large-diameter butterfly valve.
Description of drawings
Fig. 1 is the mounting structure schematic representation of the valve shaft supporting structure of large-diameter butterfly valve of the present invention.
Among the figure: 1, valve shaft, 2, valve body, 3, block bearing, 4, bearing support, 5, valve plate, 6, drive unit.
Embodiment
Describe particular content of the present invention in detail below in conjunction with the drawings and specific embodiments.
As shown in Figure 1, the valve shaft supporting structure of large-diameter butterfly valve comprises: valve shaft 1, and the two ends of described valve shaft 1 all are arranged on the outside of valve body 2, and the two ends of valve shaft 1 all are arranged on the bearing support 4 by block bearing 3 respectively.
As shown in Figure 1, the valve shaft supporting structure of said structure is installed in when using on the large-diameter butterfly valve, valve plate 5 is fixedly installed on the valve shaft 1 of valve body 2 inside, and an end of valve shaft 1 is connected with drive unit 6.Owing to adopt the mode of valve shaft two supports, can effectively stop the sinkage of valve shaft 1, valve plate 5, the seal leak phenomenon of avoiding the sealing pair dislocation to produce.
Claims (1)
1. the valve shaft supporting structure of large-diameter butterfly valve, comprising: valve shaft (1) is characterized in that: the two ends of described valve shaft (1) all are arranged on the outside of valve body (2), and the two ends of valve shaft (1) all are arranged on the bearing support (4) by block bearing (3) respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910232038A CN101713467A (en) | 2009-11-30 | 2009-11-30 | Valve shaft supporting structure of large-diameter butterfly valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910232038A CN101713467A (en) | 2009-11-30 | 2009-11-30 | Valve shaft supporting structure of large-diameter butterfly valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101713467A true CN101713467A (en) | 2010-05-26 |
Family
ID=42417357
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200910232038A Pending CN101713467A (en) | 2009-11-30 | 2009-11-30 | Valve shaft supporting structure of large-diameter butterfly valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101713467A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101865294A (en) * | 2010-06-13 | 2010-10-20 | 无锡智能自控工程有限公司 | Butterfly valve with outer locating and guiding structure capable of preventing transmission shaft from being stuck |
-
2009
- 2009-11-30 CN CN200910232038A patent/CN101713467A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101865294A (en) * | 2010-06-13 | 2010-10-20 | 无锡智能自控工程有限公司 | Butterfly valve with outer locating and guiding structure capable of preventing transmission shaft from being stuck |
| CN101865294B (en) * | 2010-06-13 | 2011-11-16 | 无锡智能自控工程有限公司 | Butterfly valve with outer locating and guiding structure capable of preventing transmission shaft from being stuck |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 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: 20100526 |