CN207621360U - A kind of bi-bellow shut-off valve - Google Patents
A kind of bi-bellow shut-off valve Download PDFInfo
- Publication number
- CN207621360U CN207621360U CN201721582377.8U CN201721582377U CN207621360U CN 207621360 U CN207621360 U CN 207621360U CN 201721582377 U CN201721582377 U CN 201721582377U CN 207621360 U CN207621360 U CN 207621360U
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- China
- Prior art keywords
- valve
- bellow
- valve rod
- shut
- flap
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Abstract
The utility model discloses a kind of bi-bellow shut-off valves, including valve body, valve rod, valve deck and flap, the valve deck, which is bolted, to be arranged in body top, the valve rod upper end is through the valve deck and upwardly extends, it is characterized in that, the flap is arranged in the valve body, the valve rod lower end is fixedly connected with the flap, the valve body is provided with reinforcement chamber around valve rod, the reinforcement intracavitary is provided with bi-bellow, the bi-bellow includes inner corrugated pipe and outward corrugated tube, the inner corrugated pipe is set in the stem outer circumference, the outward corrugated tube is set in the inner corrugated pipe periphery；It is filled with graphite packing between the valve deck and valve rod, gland is provided in the graphite packing.The bi-bellow shut-off valve of the utility model keeps the leakproofness of shut-off valve entirety stronger, can improve the service life of bellows stop valve by the way that double-ply bellows structure is arranged.
Description
Technical field
The utility model is related to a kind of control valve, especially a kind of bi-bellow shut-off valve.
Background technology
Bellows stop valve is usually used in the high-risk medium such as corrosive liquids, therefore to realize that zero leakage seals, for sealing
The requirement of property is very high.And the bellows of existing bellows stop valve only has one layer, leakproofness is not strong, and uses certain number
Afterwards, bellows itself since bellows and valve rod weld together, can not be dismantled it is possible that breakage, causes medium to be revealed
Repair, causes bellows stop valve service life short.
Utility model content
In view of this, pair that be stronger the main purpose of the utility model is to provide a kind of leakproofness and improving service life
Bellows stop valve.
A kind of in order to achieve the above object, the utility model provides bi-bellow shut-off valve, including valve body, valve rod, valve deck
And flap, the valve deck are bolted setting in body top, the valve rod upper end is through the valve deck and upwardly extends,
It is characterized in that, the flap is arranged in the valve body, the valve rod lower end is fixedly connected with the flap, and the valve body encloses
Valve rod is provided with reinforcement chamber, the reinforcement intracavitary is provided with bi-bellow, and the bi-bellow includes inner corrugated pipe and external wave
Line pipe, the inner corrugated pipe are set in the stem outer circumference, and the outward corrugated tube is set in the inner corrugated pipe periphery；The valve
It is filled with graphite packing between lid and valve rod, gland is provided in the graphite packing.
Preferably, the gland is fixedly connected by bolt with the valve deck.
Preferably, it is fixedly installed limiting plate above the gland, one end of the limiting plate is at the valve rod
It is fixedly installed screw.
Preferably, the valve deck is provided with conversion block and spirotallic gasket with valve body junction.
Preferably, the valve rod lower end is provided with boss, is provided with above the flap matched recessed with the boss
Slot, the boss are connected in the groove.
The bi-bellow shut-off valve of the utility model is strengthened by the way that double-ply bellows structure is arranged in valve body
The leakproofness of valve rod prevents liquid outflow from corroding valve rod, enhances the protection to valve rod, while by filled graphite filler, making
The leakproofness of shut-off valve entirety is stronger, can improve the service life of bellows stop valve.
Description of the drawings
Fig. 1 is the structural schematic diagram of the utility model bi-bellow shut-off valve；
Fig. 2 is the enlarged structure schematic diagram at A in Fig. 1；
Fig. 3 is the enlarged structure schematic diagram at B in Fig. 1.
Specific implementation mode
It is new below in conjunction with this practicality to keep the purpose, technical scheme and advantage of the utility model embodiment clearer
Attached drawing in type embodiment, the technical scheme in the utility model embodiment is clearly and completely described.
The embodiments of the present invention are described below in detail, the example of embodiment is shown in the accompanying drawings, wherein from beginning to end
Same or similar label indicates same or similar element or element with the same or similar functions.Below with reference to attached
The embodiment of figure description is exemplary, it is intended to for explaining the utility model, and should not be understood as the limit to the utility model
System.
As shown in Figure 1 to Figure 3, the bi-bellow shut-off valve of the utility model, including valve body 1, valve rod 2, valve deck 3 and flap
4, valve deck 3, which is bolted, to be arranged at the top of valve body 1, and 2 upper end of valve rod is through valve deck 3 and upwardly extends, and the setting of flap 4 exists
In valve body 1,2 lower end of valve rod is fixedly connected with flap 4, and valve body 1 is provided with around valve rod 2 reinforces chamber 12, reinforces setting in chamber 12
It includes inner corrugated pipe 51 and outward corrugated tube 52 to have bi-bellow 5, bi-bellow 5, and inner corrugated pipe 51 is set in 2 periphery of valve rod, outside
Bellows 52 is set in 51 periphery of inner corrugated pipe.It is arranged by inner corrugated pipe 51 and the double-deck of outward corrugated tube 52, makes reinforcement chamber 12
The leakproofness of inner valve stem 2 is stronger, reinforces the protection to valve rod 2, prevents the corroded by liquid valve rod 2 of outflow.
Graphite packing 32 is filled between valve deck 3 and valve rod 2, for valve deck 3 and the sealing of valve rod 2 to be coordinated, graphite packing
Gland 33 is further fixedly arranged on 32, gland 33 is fixedly connected by bolt with valve deck 3, and valve deck 3 is further enhanced
With the leakproofness between valve rod 2, prevent corrosive liquids from corroding flange and valve rod.33 top of gland is fixedly installed limit
One end of plate 6, limiting plate 6 is fixedly installed screw at valve rod 2, is skidded off upwards for limiting valve rod 2.
The junction of valve deck 3 and valve body 1 is provided with conversion block 11 and spirotallic gasket 31, reinforces between valve deck 3 and valve body 1
Leakproofness.
The lower end of valve rod 2 is provided with boss 20, the top of flap 4 be provided with 20 matched groove 40 of boss, pass through
Boss 20 is connected in groove 40, realization 2 lower end of valve rod is fixedly connected with flap 4.
It can be seen that the bi-bellow shut-off valve of the utility model strengthens and is located at by the way that double-ply bellows structure is arranged
The leakproofness of valve rod in valve body prevents liquid outflow from corroding valve rod, enhances the protection to valve rod, while passing through filled graphite
Filler keeps the leakproofness of shut-off valve entirety stronger, can improve the service life of bellows stop valve.
The above, the only preferred embodiment of the utility model, are not intended to limit the protection of the utility model
Range.
Claims (5)
1. a kind of bi-bellow shut-off valve, including valve body, valve rod, valve deck and flap, the valve deck is bolted setting and exists
Body top, the valve rod upper end is through the valve deck and upwardly extends, which is characterized in that the flap is arranged in the valve body
Interior, the valve rod lower end is fixedly connected with the flap, and the valve body is provided with reinforcement chamber around valve rod, and the reinforcement intracavitary is set
It is equipped with bi-bellow, the bi-bellow includes inner corrugated pipe and outward corrugated tube, and the inner corrugated pipe is set in outside the valve rod
Week, the outward corrugated tube are set in the inner corrugated pipe periphery；Graphite packing, the stone are filled between the valve deck and valve rod
It is provided with gland on black filler.
2. bi-bellow shut-off valve as described in claim 1, which is characterized in that the gland passes through bolt and the valve
Lid is fixedly connected.
3. bi-bellow shut-off valve as described in claim 1, which is characterized in that fixed setting is limited above the gland
Position plate, one end of the limiting plate is fixedly installed screw at the valve rod.
4. bi-bellow shut-off valve as described in claim 1, which is characterized in that the valve deck is provided with valve body junction to be turned
Change block and spirotallic gasket.
5. bi-bellow shut-off valve as described in claim 1, which is characterized in that the valve rod lower end is provided with boss, described
It is provided with above flap and is connected in the groove with the matched groove of the boss, the boss.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721582377.8U CN207621360U (en) | 2017-11-23 | 2017-11-23 | A kind of bi-bellow shut-off valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721582377.8U CN207621360U (en) | 2017-11-23 | 2017-11-23 | A kind of bi-bellow shut-off valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207621360U true CN207621360U (en) | 2018-07-17 |
Family
ID=62827904
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721582377.8U Active CN207621360U (en) | 2017-11-23 | 2017-11-23 | A kind of bi-bellow shut-off valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207621360U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113551050A (en) * | 2021-08-31 | 2021-10-26 | 南通世发船舶机械有限公司 | Corrugated pipe valve |
-
2017
- 2017-11-23 CN CN201721582377.8U patent/CN207621360U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113551050A (en) * | 2021-08-31 | 2021-10-26 | 南通世发船舶机械有限公司 | Corrugated pipe valve |
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