CN205479381U - Shaft type high performance butterfly valve of double break - Google Patents
Shaft type high performance butterfly valve of double break Download PDFInfo
- Publication number
- CN205479381U CN205479381U CN201521049946.3U CN201521049946U CN205479381U CN 205479381 U CN205479381 U CN 205479381U CN 201521049946 U CN201521049946 U CN 201521049946U CN 205479381 U CN205479381 U CN 205479381U
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- valve shaft
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- lower valve
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Abstract
The utility model discloses a shaft type high performance butterfly valve of double break, including valve body, upper valve shaft, lower valve shaft, valve plate, disk seat, valve body clamp plate and back blanking cover, upper valve shaft and lower valve shaft correspond the upper portion and the lower part fixed connection of ground and valve plate respectively, the lower valve port upper end of valve body be provided with the bulge loop, the lower tip of lower valve port be formed with the location cavity, the lower valve shaft lower extreme be formed with positioning groove, match the ground inlay card and be in positioning groove in the divided ring fixed a position in location in the cavity, the cover establish on lower valve shaft the guide pin bushing upper end with the bulge loop push up mutually and hold, the lower extreme with the divided ring push up mutually and hold. The utility model discloses a lower valve shaft axle adopts the lower part and runs from opposite directions ring type locate mode, and processing is simple and the installation is convenient, and the polarization can be strong, can effectively prevent the lower valve shaft drunkenness that makes progress, and divided ring and the top surface of location cavity are interfered mutually and can be prevented that the valve plate from shifting up and skew center of pipe promptly, and guide pin bushing rotating resistance is little in addition, can effectively avoid being blocked deadly.
Description
Technical field
This utility model relates to butterfly valve technical field, particularly relates to a kind of double break shaft type high-performance butterfly valve.
Background technology
Butterfly valve is widely used in oil, chemical industry, metallurgy, electric power, weaving, light industry, machine-building, building
With in the fluid means control equipment of the various occasions such as defence and military.Valve is in whole equipment and system
Playing vital effect, the inefficacy of butterfly valve can cause system, equipment cannot normally work, time serious very
Extremely can cause the generation of catastrophic failure, this just requires that butterfly valve must have the highest reliability.
Meanwhile, butterfly valve is as a disabling mechanism, and when conducting, the most inevitably convection cell constitutes impact,
And, valve shaft, as rotatable parts, needs the highest machining accuracy, causes processing cost to raise, and high accuracy
Processing request also cause by using environmental effect big, service life is short.
Utility model content
The purpose of this utility model is for technological deficiency present in prior art, and provides a kind of double break axle
Formula high-performance butterfly valve.
Be the technical scheme is that by realizing the purpose of this utility model
A kind of double break shaft type high-performance butterfly valve, including valve body, upper valve shaft, lower valve shaft, valve plate, valve seat, valve
Body pressing plate and rear blanking cover, described upper valve shaft and lower valve shaft respectively correspondingly upper and lower with valve plate is fixed
Connecting, the lower valve port upper end of described valve body is provided with bulge loop, and the bottom of described lower valve port is formed fixed
Position cavity, described lower valve shaft lower end is formed with detent, and card is embedded in described detent matchingly
Divided ring be positioned in located cavity, the guide pin bushing upper end being set on lower valve shaft is pushed up mutually with described bulge loop
Holding, lower end holds mutually with described divided ring.
Described rear blanking cover is bolted to connection with the lower valve port of described valve body, described rear blanking cover with
The end face that lower valve shaft is relative is centrally formed with the circular groove of casting.
The upper end of the upper valve port of described valve body is formed with the inner stopper that diameter becomes big, at the inner stopper of upper valve port
It is provided with axle sleeve on the upper valve shaft at place, is disposed with Packing seat on described inner stopper internal axle sleeve top and fills out
Material and filler pressing sleeve, the hold-down grid being connected is fixed, by with described valve body, in the top of described filler pressing sleeve
Compress.
Described valve seat is PTFE material.
Valve plate is connected by straight pin is fixing with upper valve shaft and lower valve shaft respectively.
Rear blanking cover sealing ring it is provided with between described rear blanking cover and the lower valve port of described valve body.
Valve plate back designs has boss, body cavity to be designed with boss block, boss and boss when valve plate is closed
There is parallel clearance 1-2mm to prevent valve plate from crossing position closedown in block.
The lower end of described lower valve shaft is formed with screwed hole to extract lower valve shaft when dismounting or keep in repair.With existing
Technology is compared, and the beneficial effects of the utility model are:
Lower valve shaft axle of the present utility model uses split ring type location, bottom mode, and processing is simple and installation is convenient,
Positioning performance is strong, can effectively prevent lower valve shaft upwards play, i.e. divided ring from interferenceing with the end face of located cavity
It is prevented from valve plate moving and deviateing pipeline center, and guide pin bushing rotational resistance is little, can be prevented effectively from and be stuck.
Accompanying drawing explanation
Fig. 1 show the structural representation of double break shaft type high-performance butterfly valve of the present utility model；
Fig. 2 show the partial structurtes schematic diagram shown in Fig. 1.
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, this utility model is described in further detail.Should be appreciated that
Specific embodiment described herein, only in order to explain this utility model, is not used to limit this utility model.
As illustrated in fig. 1 and 2, double break shaft type high-performance butterfly valve of the present utility model include valve body 1, upper valve shaft 4,
Lower valve shaft 2, valve plate 3, valve seat 5, valve body pressing plate 6 and rear blanking cover 16, described upper valve shaft 4 and lower valve shaft
2 respectively correspondingly fixing with the upper and lower of valve plate 3 are connected, high-performance butterfly valve the most of the present utility model employing
The double break axle construction form of upper lower valve shaft.
Specifically, valve plate is connected by straight pin is fixing with upper valve shaft and lower valve shaft respectively.Upper valve shaft 4
Upper end connects outside the upper valve port of valve body extends valve body 1 and with the power intake transmission being fixed on support
Connecing, upper valve shaft uses filler group to realize sealing, specifically, and the upper end shape of the upper valve port of described valve body 1
Become to have the inner stopper that diameter change is big, the upper valve shaft at the inner stopper of upper valve port is provided with axle sleeve 7, described
Inner stopper internal axle sleeve 7 top be disposed with Packing seat and filler and filler pressing sleeve, described filler pressure
The top of set is clamped by with the described fixing hold-down grid 8 being connected of valve body 1, the lower valve port of described valve body
Upper end is provided with bulge loop, is i.e. likewise formed with the seam that diameter becomes big, and the bottom of described lower valve port is formed
Having located cavity, described lower valve shaft lower end to be formed with detent, to be embedded in described location recessed for card matchingly
Divided ring 9 in groove is positioned in located cavity, and the guide pin bushing upper end being set on lower valve shaft is convex with described
Ring holds mutually, and lower end holds mutually with described divided ring, and described lower valve shaft axle uses the split ring type in bottom fixed
Position mode, processing is simple and installs facility, and positioning performance is strong, can effectively prevent lower valve shaft upwards play, i.e.
Divided ring is interferenceed with the end face of located cavity and is prevented from valve plate moving and deviateing pipeline center, and guide pin bushing
Rotational resistance is little, can be prevented effectively from and be stuck.
Further, the lower valve port of described rear blanking cover 16 and described valve body be bolted to connection and
Between be provided with rear blanking cover sealing ring 15, the end face center casting that described rear blanking cover is relative with lower valve shaft
Circular groove 17, the described annular section outside end face groove carries out polish to reduce friction, groove
Design decrease and lower valve shaft contact area, on the one hand and then reduce the frictional force of lower valve shaft, the opposing party
Face is easy to process, because only need to ensure the precision of the annulus area contacted with lower valve shaft, it is not necessary to processing groove
Part, groove is casting, has saved processing cost.Meanwhile, when there being impurity to occur under lower valve shaft
During end, can be squeezed in described groove, the frictional force preventing impurity from occurring causing increases.
Preferably, valve plate back designs has boss, body cavity to be designed with boss block, and valve plate is convex when closing
There is parallel clearance 1-2mm to prevent valve plate from crossing position closedown in platform and boss block.
Preferably, described valve seat is PTFE material, and valve seal relies on valve plate to come with the crimp of valve seat
Realize, while PTFE has certain elasticity, there is the strongest corrosion resistance, can guarantee that for multiple occasion.
Further, the lower end of described lower valve shaft is formed with screwed hole, when dismounting or maintenance, and spiral shell of screwing on
Bolt can extract lower valve shaft, convenient and swift.
The above is only preferred implementation of the present utility model, it is noted that lead for this technology
For the those of ordinary skill in territory, on the premise of without departing from this utility model principle, it is also possible to make some
Improvements and modifications, these improvements and modifications also should be regarded as protection domain of the present utility model.
Claims (8)
1. a double break shaft type high-performance butterfly valve, it is characterised in that include valve body, upper valve shaft, lower valve shaft,
Valve plate, valve seat, valve body pressing plate and rear blanking cover, described upper valve shaft and lower valve shaft respectively correspondingly with valve plate
Upper and lower is fixing to be connected, and the lower valve port upper end of described valve body is provided with bulge loop, described lower valve port
Bottom is formed with located cavity, and described lower valve shaft lower end is formed with detent, and card is embedded in institute matchingly
Divided ring in the detent stated is positioned in located cavity, the guide pin bushing upper end being set on lower valve shaft with
Described bulge loop holds mutually, and lower end holds mutually with described divided ring.
2. double break shaft type high-performance butterfly valve as claimed in claim 1, it is characterised in that described rear blanking cover
It is bolted to connection with the lower valve port of described valve body, the end face that described rear blanking cover is relative with lower valve shaft
It is centrally formed with the circular groove of casting.
3. double break shaft type high-performance butterfly valve as claimed in claim 1, it is characterised in that described valve body
The upper end of upper valve port is formed with the inner stopper that diameter becomes big, and the upper valve shaft at the inner stopper of upper valve port is arranged
There is axle sleeve, be disposed with Packing seat and filler and filler pressing sleeve on described inner stopper internal axle sleeve top,
The top of described filler pressing sleeve is compressed by fixing the hold-down grid being connected with described valve body.
4. double break shaft type high-performance butterfly valve as claimed in claim 1, it is characterised in that described valve seat is
PTFE material.
5. double break shaft type high-performance butterfly valve as claimed in claim 1, it is characterised in that valve plate is respectively with upper
Valve shaft and lower valve shaft connect by straight pin is fixing.
6. double break shaft type high-performance butterfly valve as claimed in claim 1, it is characterised in that described rear blanking cover
And it is provided with rear blanking cover sealing ring between the lower valve port of described valve body.
7. double break shaft type high-performance butterfly valve as claimed in claim 1, it is characterised in that valve plate back designs
Having boss, body cavity to be designed with boss block, when valve plate is closed there is parallel clearance in boss and boss block
1-2mm with prevent valve plate cross position close.
8. double break shaft type high-performance butterfly valve as claimed in claim 1, it is characterised in that described lower valve shaft
Lower end be formed with screwed hole to extract lower valve shaft when dismounting or keep in repair.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521049946.3U CN205479381U (en) | 2015-12-16 | 2015-12-16 | Shaft type high performance butterfly valve of double break |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521049946.3U CN205479381U (en) | 2015-12-16 | 2015-12-16 | Shaft type high performance butterfly valve of double break |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205479381U true CN205479381U (en) | 2016-08-17 |
Family
ID=56661283
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201521049946.3U Active CN205479381U (en) | 2015-12-16 | 2015-12-16 | Shaft type high performance butterfly valve of double break |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205479381U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110242754A (en) * | 2019-07-10 | 2019-09-17 | 车碧怀 | A kind of three eccentricity soft sealing butterfly valve |
| WO2020108238A1 (en) * | 2018-11-30 | 2020-06-04 | 江南阀门有限公司 | Slip-increasing structure for preventing seizure of lower-end portion of valve stem |
-
2015
- 2015-12-16 CN CN201521049946.3U patent/CN205479381U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020108238A1 (en) * | 2018-11-30 | 2020-06-04 | 江南阀门有限公司 | Slip-increasing structure for preventing seizure of lower-end portion of valve stem |
| CN110242754A (en) * | 2019-07-10 | 2019-09-17 | 车碧怀 | A kind of three eccentricity soft sealing butterfly valve |
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|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |