CN208348522U - A kind of stop valve structure - Google Patents
A kind of stop valve structure Download PDFInfo
- Publication number
- CN208348522U CN208348522U CN201820888726.7U CN201820888726U CN208348522U CN 208348522 U CN208348522 U CN 208348522U CN 201820888726 U CN201820888726 U CN 201820888726U CN 208348522 U CN208348522 U CN 208348522U
- Authority
- CN
- China
- Prior art keywords
- flap
- valve
- boss
- big
- cavity volume
- 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.)
- Expired - Fee Related
Links
- 238000007789 sealing Methods 0.000 claims description 8
- 238000012856 packing Methods 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 4
- 230000006378 damage Effects 0.000 description 2
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 230000003321 amplification Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
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- Lift Valve (AREA)
Abstract
The utility model discloses a kind of stop valve structure, including valve body, big valve flap, small flap and big valve rod, valve body intermediate portion top is equipped with big valve rod, big valve stem end is connected with cavity volume, cavity volume middle section is equipped with downward hollow boss, piston rod is equipped with inside boss, piston rod is downward convex compatible with boss, the longitudinal length of piston rod protrusion is less than cavity volume inner top side face to the distance of boss, piston rod bottom is equipped with big valve flap, boss has hollow cylinder, small flap is equipped with below hollow cylinder, the distance of piston rod to big valve flap bottom is not more than cavity volume to the distance of small flap bottom, it is that valve block is equipped in valve body immediately below flap, the intermediate length of valve block is less than the diameter of big valve flap.Small flap can first be detached from valve block when shut-off valve is opened, and flow slowly into medium first, because the effect big valve flap of boss is lifted fully upward, prevent from damaging shut-off valve because of excessive impulse force, extend the service life of shut-off valve.
Description
Technical field
The utility model relates to valve, specifically a kind of stop valve structure.
Background technique
Shut-off valve is also known as pipe valve valve, belongs to forced seal formula valve, so when valve is closed, it is necessary to apply to flap and press
Power is not leaked with forced seal face, since friction of shut-off valve during opening and closing between sealing surface is small, is not only suitable for mesolow
Be also suitable for high pressure, current many shut-off valves often because opening when medium flow velocity it is larger, flap is caused after accumulating over a long period
Certain injury, reduces the service life.
Utility model content
To solve the above-mentioned problems, the utility model discloses a kind of stop valve structures.
The technical solution of the utility model are as follows: a kind of stop valve structure, including valve body, flap and big valve rod, flap include
Big valve flap and small flap, valve body intermediate portion top are equipped with big valve rod, and big valve stem top is equipped with handwheel, and big valve stem end is connected with
Cavity volume, cavity volume middle section are equipped with downward hollow boss, in cavity volume, i.e., piston are equipped with inside and above boss
Bar, piston rod are downward convex compatible with boss, and the longitudinal length of piston rod protrusion is less than cavity volume inner top side face
To the distance of boss, piston rod bottom is equipped with big valve flap, and the lower end surface of i.e. cavity volume is equipped with hollow cylinder under boss, hollow
It is equipped with small flap below cylinder, i.e., is equipped with small flap outside big valve flap, the distance of piston rod to big valve flap bottom is not more than volume
Chamber is to the distance of small flap bottom, and flap underface is that valve block is equipped in valve body, and the intermediate length of valve block is less than big valve flap
Diameter.
Further, airtight and watertight padding is equipped in big valve rod upper body, airtight and watertight padding is externally provided with sealing element.
Further, the cross section outer diameter of hollow cylinder is equal to the outer diameter of cavity volume, and the internal diameter of hollow cylinder is greater than
The internal diameter of hollow boss.
Further, flap is coated with sealing ring, and the internal diameter of small flap is greater than the diameter of big valve flap.
The usefulness of the utility model: small flap can first be detached from valve block when shut-off valve is opened, and keep medium first
It flows slowly into, then because the effect big valve flap of boss is lifted fully upward, caused by preventing because of excessive impulse force to shut-off valve
Damage, extends the service life of shut-off valve.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the utility model；
Fig. 2 is the amplification figure structure schematic representation of Fig. 1 of the utility model；
Wherein: 1, valve body, 1-1, valve block, 2, big valve rod, 3, handwheel, 4, cavity volume, 5, boss, 6, piston rod, 7, big
Flap, 8, cylinder, 9, small flap, 10, airtight and watertight padding, 11, sealing element.
Specific embodiment
The utility model is described in further detail with reference to the accompanying drawing.
A kind of stop valve structure, including valve body 1, flap and big valve rod 2, flap include big valve flap 7 and small flap 9, valve body 1
Middle section top is equipped with big valve rod 2, is equipped with airtight and watertight padding 10 in big 2 upper body of valve rod, airtight and watertight padding 10 is externally provided with sealing
Part 11 is equipped with handwheel 3 at the top of big valve rod 2, and big 2 end of valve rod is connected with cavity volume 4, and 4 middle section of cavity volume is equipped with downward
Hollow boss 5 in cavity volume 4, i.e., is equipped with piston rod 6 inside and above boss 5, piston rod 6 be and boss 5 it is compatible to
Under convex, piston rod 6 protrude longitudinal length be less than distance of the 4 inner top side face of cavity volume to boss 5,6 bottom of piston rod
Equipped with big valve flap 7, the lower end surface of the lower i.e. cavity volume 4 of boss 5 is equipped with hollow cylinder 8, is equipped with small flap below hollow cylinder 8
9, i.e., small flap 9 is equipped with outside big valve flap 7, the distance of piston rod 6 to 7 bottom of big valve flap arrives small 9 bottom of flap no more than cavity volume 4
The distance in portion, flap underface are that valve block 1-1 is equipped in valve body 1, and the intermediate length of valve block 1-1 is less than the straight of big valve flap 7
Diameter.
The cross section outer diameter of hollow cylinder 8 is equal to the outer diameter of cavity volume 4, and the internal diameter of hollow cylinder 8 is greater than hollow
The internal diameter of boss 5.
Flap is coated with sealing ring, and the internal diameter of small flap 9 is greater than the diameter of big valve flap 7.
Principle: small flap can first be detached from valve block when shut-off valve is opened, and flow slowly into medium first, then because
The effect big valve flap of boss is lifted fully upward, is prevented from damaging shut-off valve because of excessive impulse force, is extended shut-off valve
Service life, when shut-off valve is closed, big valve flap touches valve block, and piston rod is close to cavity volume inner upper end face, directly
To abutting, small flap is close to valve block, plays the effect of closing.
Claims (4)
1. a kind of stop valve structure, it is characterised in that: including valve body, flap and big valve rod, the flap includes big valve flap and small
Flap, the valve body intermediate portion top are equipped with big valve rod, and the big valve stem top is equipped with handwheel, the big valve stem end connection
There is a cavity volume, the cavity volume middle section is equipped with downward hollow boss, in the cavity volume, i.e., inside and above boss
Equipped with piston rod, the piston rod is downward convex compatible with boss, and the longitudinal length of the piston rod protrusion is less than
To the distance of boss, it is under cavity volume under the boss that the piston rod bottom, which is equipped with big valve flap, in cavity volume inner top side face
End face is equipped with hollow cylinder, and small flap is equipped with below the hollow cylinder, i.e., is equipped with small flap, the work outside big valve flap
The distance of stopper rod to big valve flap bottom is not more than cavity volume to the distance of small flap bottom, and the flap underface is to set in valve body
There is valve block, the intermediate length of the valve block is less than the diameter of big valve flap.
2. a kind of stop valve structure according to claim 1, it is characterised in that: be equipped in the big valve rod upper body close
Packing material, the airtight and watertight padding are externally provided with sealing element.
3. a kind of stop valve structure according to claim 1, it is characterised in that: the cross section outer diameter of the hollow cylinder
Equal to the outer diameter of cavity volume, the internal diameter of the hollow cylinder is greater than the internal diameter of hollow boss.
4. a kind of stop valve structure according to claim 1, it is characterised in that: the flap is coated with sealing ring, institute
The internal diameter for stating small flap is greater than the diameter of big valve flap.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820888726.7U CN208348522U (en) | 2018-06-08 | 2018-06-08 | A kind of stop valve structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820888726.7U CN208348522U (en) | 2018-06-08 | 2018-06-08 | A kind of stop valve structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208348522U true CN208348522U (en) | 2019-01-08 |
Family
ID=64882925
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820888726.7U Expired - Fee Related CN208348522U (en) | 2018-06-08 | 2018-06-08 | A kind of stop valve structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208348522U (en) |
-
2018
- 2018-06-08 CN CN201820888726.7U patent/CN208348522U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190108 |