CN205938153U - Bellows double -gate valve - Google Patents
Bellows double -gate valve Download PDFInfo
- Publication number
- CN205938153U CN205938153U CN201620905654.3U CN201620905654U CN205938153U CN 205938153 U CN205938153 U CN 205938153U CN 201620905654 U CN201620905654 U CN 201620905654U CN 205938153 U CN205938153 U CN 205938153U
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- CN
- China
- Prior art keywords
- corrugated tube
- bellows
- valve rod
- gate valve
- double gate
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Abstract
The utility model discloses the wound relates to a high performance bellows double -gate valve, and this bellows double -gate valve is including the valve rod and overlap the bellows outside the valve rod, its characterized in that: the bellows segmentation sets up, and two section adjacent welding together. The lower extreme of bellows welds on the valve rod through the lower seal piece, the upper end and the composite pads chip bonding of bellows. The welding is the roll welding. Be equipped with the uide bushing in the bellows, be provided with the guide way on the inner wall of uide bushing, be provided with the feather key on the valve rod, the feather key is located the guide way. Be provided with the beaded finish in the bellows, two sections adjacent bellows welding are on the beaded finish, and the beaded finish overlaps on the valve rod. This kind of bellows double -gate valve, the volume of having elastic deformation is big, withstand voltage and fatigue strength is high, stable in structure, simple to operate, be convenient for wash with advantage such as inspection.
Description
Technical field
This utility model is related to a kind of double gate valve and in particular to a kind of corrugated tube double gate valve.
Background technology
It is water that Pneumatic gate valve is mainly used in medium, steam, gas, and the occasion of the general aspects medium such as oil product works as the modern times
Change big industrial requirements by this kind of products application in the occasion of valuable medium or hypertoxic medium, just can not meet requirement, such as at all
Fruit medium leaks along valve rod, then necessarily lead to great economic loss and casualties.For this reason, bellows seal gate valve meets the tendency
And give birth to.As the utility model patent for CN 201531621U for the notification number discloses a kind of energy-saving balance corrugated pipe valve, this valve is just
Apply Bellows Technology, first sealing is played by corrugated tube, but the valve stroke of this bellows valve is shorter, for
The elastic deformation amount of corrugated tube is less demanding with pressure and fatigue strength, and for the longer double gate valve of valve stroke, general
Logical Bellows Technology can not meet requirement well it is impossible to reach real safely and effectively sealing effectiveness.
Content of the invention
In view of the deficiency that prior art exists, this utility model is innovated and is provided a kind of high-performance corrugated tube double gate valve, is somebody's turn to do
Corrugated tube double gate valve include valve rod and be enclosed within corrugated tube outside valve rod it is characterised in that：Described corrugated tube subsection setup, phase
Adjacent two sections weld together.
The lower end of described corrugated tube is welded on valve rod by lower seal, and the upper end of described corrugated tube is welded with Composition spacer
Connect.Described it is welded as roll welding.It is provided with fairlead in described corrugated tube, the inwall of described fairlead is provided with gathering sill, described
It is provided with feather key, described feather key is located in gathering sill on valve rod.It is provided with reinforcing ring, two sections of adjacent wave in described corrugated tube
On reinforcing ring, reinforcing ring is enclosed within valve rod stricture of vagina sealing of tube.On described valve body, the position near corrugated tube upper end is provided with flushing hole.
Described valve body is connected with bearing flange, and described Composition spacer is embedded between valve body and bearing flange（So facilitate corrugated tube
Install and dismounting）, described bearing flange is provided with inspection hole, is additionally provided with packing seal element between described bearing flange and valve rod.
Described corrugated tube is made of stainless steel.
A kind of corrugated tube double gate valve providing according to this utility model, has amount of elastic deformation greatly, pressure and fatigue strength
Height, Stability Analysis of Structures, easy for installation, the advantages of being easy to cleaning and check.
Brief description
Fig. 1 is structural representation of the present utility model；
Fig. 2 is the sectional view in Fig. 1 along A-A direction.
Specific embodiment
Shown in Fig. 1, this double gate valve includes valve body 1, flashboard, valve rod 2 and is enclosed within corrugated tube 3 outside valve rod 2, this ripple
Stricture of vagina pipe 3, by stainless steel making, prevents from being corroded；Because the range demands of this double gate valve are larger, therefore stretching for corrugated tube 3
Contracting amount is put forward higher requirement with resistance to pressure and fatigue strength, for this reason, corrugated tube 3 is designed to stagewise knot by this utility model
Structure, will be divided into a section by corrugated tube 3, then weld together adjacent two sections（Specifically adopt roll welding, roll welding high precision,
Deformation is little）, and form one, so it is ensured that the drift of corrugated tube 3, freely stretch in the range of total travel, and
And there is stronger external force resistance ability and larger elastic deformation amount.
Corrugated tube 3 plays the effect of first sealing, prevents poisonous medium from leaking upwards along valve rod 2, under corrugated tube 3
End is welded on valve rod 2 by sealing member 31, and upper end is embedded between valve body 1 and bearing flange 9 by Composition spacer 33, ripple
This structure of stricture of vagina pipe 3 just constitutes a seal box, forms first sealing；And the bearing linking together with valve body 1 upper end
It is provided with packing seal element 10, this packing seal element 10 plays the effect of the second sealing, prevent leakage is entered in corrugated tube 3 in flange 9
Poisonous medium up leak again.
For the ease of cleaning corrugated tube 3, this utility model position near corrugated tube 3 upper end on valve body 1 is provided with flushing
Hole 7, this flushing hole 7 is communicated with valve body 1 interior room.And in order to check whether corrugated tube 3 leaks into poisonous medium, this utility model is also
Inspection hole 8 is provided with bearing flange 9, this inspection hole 8 is communicated with the axis channel of bearing flange 9.Certainly, do not check not rinsing
When, flushing hole 7 is all blocked with plug screw with inspection hole 8.
As described above, because this double-gate stroke of valve is longer, in order to prevent valve rod 2 from moving in stroke transfer, as Fig. 2 institute
Show, this utility model is also provided with fairlead 4 in corrugated tube 3, and the inwall of this fairlead 4 is provided with gathering sill, and on valve rod 2
It is provided with feather key 5, this feather key 5 is located in gathering sill.By this structure, valve rod 2 would not during moving up and down
Turn round, protect corrugated tube 3 radially not damaged.
Also to ensure that valve rod 2 moves along axle center, this utility model is also provided with reinforcing ring 6 in corrugated tube 3, two sections
Adjacent corrugations pipe 3 is welded on reinforcing ring 6, and reinforcing ring 6 is enclosed within valve rod 2, so not only corrugated tube 3 easy to manufacture, Er Qieyou
In the effect of reinforcing ring 6, valve rod 2 can guarantee that and moves on axis direction, will not glance off, thus playing protection corrugated tube 3
Effect.
Claims (8)
1. corrugated tube double gate valve, includes valve body（1）, valve rod（2）And it is enclosed within valve rod（2）Outer corrugated tube（3）, its feature exists
In：Described corrugated tube（3）Subsection setup, adjacent two sections weld together.
2. corrugated tube double gate valve according to claim 1 it is characterised in that：Described corrugated tube（3）Lower end by under close
Sealing（31）It is welded on valve rod（2）On, described corrugated tube（3）Upper end and Composition spacer（33）Weld together.
3. corrugated tube double gate valve according to claim 1 and 2 it is characterised in that：Described it is welded as roll welding.
4. corrugated tube double gate valve according to claim 1 and 2 it is characterised in that：Described corrugated tube（3）Inside it is provided with fairlead
（4）, described fairlead（4）Inwall on be provided with gathering sill, described valve rod（2）On be provided with feather key（5）, described feather key
（5）In gathering sill.
5. corrugated tube double gate valve according to claim 1 and 2 it is characterised in that：Described corrugated tube（3）Inside it is provided with reinforcement
Ring（6）, two sections of adjacent corrugations pipes（3）It is welded on reinforcing ring（6）On, reinforcing ring（6）It is enclosed within valve rod（2）On.
6. corrugated tube double gate valve according to claim 1 and 2 it is characterised in that：Described valve body（1）Upper close corrugated tube
（3）The position of upper end is provided with flushing hole（7）.
7. corrugated tube double gate valve according to claim 2 it is characterised in that：Described valve body（1）With bearing flange（9）Even
Connect, described Composition spacer（33）It is embedded in valve body（1）With bearing flange（9）Between, described bearing flange（9）It is provided with inspection hole
（8）, described bearing flange（9）With valve rod（2）Between be additionally provided with packing seal element（10）.
8. corrugated tube double gate valve according to claim 1 it is characterised in that：Described corrugated tube（3）It is made of stainless steel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620905654.3U CN205938153U (en) | 2016-08-20 | 2016-08-20 | Bellows double -gate valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620905654.3U CN205938153U (en) | 2016-08-20 | 2016-08-20 | Bellows double -gate valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205938153U true CN205938153U (en) | 2017-02-08 |
Family
ID=57948234
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620905654.3U Active CN205938153U (en) | 2016-08-20 | 2016-08-20 | Bellows double -gate valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205938153U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109630678A (en) * | 2018-12-29 | 2019-04-16 | 航天神洁(北京)科技发展有限公司 | A kind of high temperature dynamic sealing device for flammable explosion hazard gases |
| CN110056708A (en) * | 2019-03-04 | 2019-07-26 | 合肥通用机械研究院有限公司 | The dedicated bellows valve bar assembly of high frequency quck-opening valve |
-
2016
- 2016-08-20 CN CN201620905654.3U patent/CN205938153U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109630678A (en) * | 2018-12-29 | 2019-04-16 | 航天神洁(北京)科技发展有限公司 | A kind of high temperature dynamic sealing device for flammable explosion hazard gases |
| CN110056708A (en) * | 2019-03-04 | 2019-07-26 | 合肥通用机械研究院有限公司 | The dedicated bellows valve bar assembly of high frequency quck-opening valve |
| CN110056708B (en) * | 2019-03-04 | 2020-07-07 | 合肥通用机械研究院有限公司 | Special corrugated pipe valve rod assembly for high-frequency quick-opening valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |