CN206338448U - Ammonia check valve special - Google Patents
Ammonia check valve special Download PDFInfo
- Publication number
- CN206338448U CN206338448U CN201620914128.3U CN201620914128U CN206338448U CN 206338448 U CN206338448 U CN 206338448U CN 201620914128 U CN201620914128 U CN 201620914128U CN 206338448 U CN206338448 U CN 206338448U
- Authority
- CN
- China
- Prior art keywords
- flap
- valve
- face
- bonnet
- special
- 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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- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 title claims abstract description 28
- 229910021529 ammonia Inorganic materials 0.000 title claims abstract description 16
- 230000008676 import Effects 0.000 claims abstract description 15
- 238000007789 sealing Methods 0.000 claims abstract description 12
- 230000007797 corrosion Effects 0.000 claims abstract description 10
- 238000005260 corrosion Methods 0.000 claims abstract description 10
- 229920006361 Polyflon Polymers 0.000 claims abstract description 9
- 229910000831 Steel Inorganic materials 0.000 claims description 4
- 239000010959 steel Substances 0.000 claims description 4
- 238000003466 welding Methods 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 7
- 229910001018 Cast iron Inorganic materials 0.000 description 2
- 229910001208 Crucible steel Inorganic materials 0.000 description 2
- 230000009172 bursting Effects 0.000 description 2
- 239000001997 corrosion-resisting alloy Substances 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000003628 erosive effect Effects 0.000 description 2
- 230000008014 freezing Effects 0.000 description 2
- 238000007710 freezing Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 229920003023 plastic Polymers 0.000 description 2
- 239000004033 plastic Substances 0.000 description 2
- 230000007812 deficiency Effects 0.000 description 1
- 238000006477 desulfuration reaction Methods 0.000 description 1
- 230000023556 desulfurization Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 238000012805 post-processing Methods 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 238000005245 sintering Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
Landscapes
- Lift Valve (AREA)
- Check Valves (AREA)
Abstract
Ammonia check valve special, is related to a kind of Special valve.Including valve body, bonnet, valve seat, flap, valve seat is fixed in valve body, valve body includes middle part connector, flange is set respectively at valve body import and export, adpting flange is set at the connector of middle part, import and export is located on same axis, and middle part connector is located at the vertical direction in import and export direction；Bonnet is sealed by multiple bolts, nut and adpting flange and fixed；The inner face central integral of bonnet sets fairlead, and flap bar coordinates in fairlead, and the stroke distances of flap are less than the fairlead free end face to the distance of flap；Set one to enclose special-shaped slot on the end face with valve flap contacts of valve seat, polyflon seal is set in special-shaped slot, the end face contacted in flap with the valve seat sets one to enclose the conical surface, and the conical surface coordinates with polyflon seal, forms sealing pair.This valve seal effect is good, corrosion-resistant, long service life.
Description
Technical field
The utility model is related to a kind of Special valve, more particularly to a kind of manufacturing technology field of ammonia check valve special.
Background technology
At present, domestic check-valves is probably had by form point：Lift, vertical, swing type three major types, they are according to operating mode pipe
The installation requirement on road carries out selection and used, and lift, swing type are applied to be horizontally mounted, vertical to be applied to right angle setting, rationally
Selection structure type has a great impact to valve using effect.Such valve be always maintained in structure traditional plane,
Ball face sealing form, poor sealing performance, service life is short, it is impossible to meet the effect that operating mode is used for a long time, is brought to client's production
Large effect.
Further structural adjustment with country to heavy polluted industry, Ge Jia power plant start to build desulfurization, out of stock work one after another
Journey project, projects ammonia system operating mode therein, it is necessary to substantial amounts of ammonia valve, check-valves is exactly one of critical valves,
So research and development ammonia special valve is the developing direction of enterprise transformation upgrading, national industrial policies, development prospect are also fully consistent with
It is wide.
Utility model content
In order to overcome the technological deficiency of existing product, the utility model provides a kind of ammonia check valve special.
The utility model includes valve body, bonnet, valve seat, flap, and the valve seat is fixed in the valve body, the valve body bag
Include and flange is set respectively at import, outlet, middle part connector, the import and export, the company of setting at the middle part connector
Acting flange, the import and export is located on same axis, and the middle part connector is located at the vertical direction in the import and export direction；
The bonnet is sealed with the adpting flange and fixed by multiple bolts, nut；The inner face central integral of the bonnet is set
Fairlead a, end face center of the flap is fixedly connected flap bar, and the flap bar coordinates in the fairlead, described
Another end face of flap and the valve seat close contacting fit, the stroke distances of the flap are less than the fairlead free end
Distance of the face to the flap；One is set to enclose special-shaped slot on the end face with valve flap contacts of the valve seat, in the special-shaped slot
Interior setting polyflon seal, the end face contacted in the flap with the valve seat sets one to enclose the conical surface, the cone
Face coordinates with the polyflon seal, forms sealing pair.
Flap bar described in the utility model and the flap are welded, the fairlead endoporus of the flap bar and the bonnet it
Between gap coordinate；The free positioned-lifting of flap, no jam phenomenon can so be ensured.
The sealing surface of flap described in the utility model is formed by corrosion resisting alloy built-up welding weldering.
Valve body described in the utility model is made of corrosion resisting steel.
The utility model sets gasket seal between the bonnet and the adpting flange.
Utility model works principle is：By the flowing pressure of medium in itself, and valve is opened and closed automatically.Flap rises
Medium passes through, valve opening；Pressure medium declines, and flap is fallen, and valve is closed, and prevents medium back flow, reaches non-return effect.
The utility model, using cone, flat seal form, has been initially just taper-face contact, uses a period of time, valve seat plastics
Sealing surface produces plastic deformation, and plane starts sealing, constitutes cone, the effect of plane double insurance sealing, and non-return effect is good, close
Obturage close.Valve body is made using corrosion resisting steel material, corrosion-resistant, resistance to erosion, anti-ammonia low temperature situation excellent result；Solve tradition
Plain cast iron, cast steel valve body are easily perforated, not corrosion-resistant, in addition valve body bursting by freezing problem, to client provide it is a kind of safe and reliable
Check valve special.
Brief description of the drawings
Fig. 1 is a kind of structural representation of the present utility model.
Embodiment
As shown in figure 1, this ammonia check valve special, including valve body 1, bonnet 5, valve seat 8, flap 7, valve seat 8 is fixed on valve
In body 1, valve body 1 includes setting flange 12 respectively at import 9, outlet 10, middle part connector 11, import and export 9,10, in
Adpting flange 13 is set at portion's connector 11, and import and export 9,10 is located on same axis, and middle part connector 11 is located at import and export
The vertical direction in direction；Bonnet 5 is sealed by multiple bolts, nut and adpting flange 12 and fixed, in bonnet 5 and adpting flange 12
Between set gasket seal 4；The inner face central integral of bonnet 5 sets fairlead 13, and an end face center of flap 7, which is fixed, to be connected
Flap bar 6 is connect, flap bar 6 coordinates in fairlead 13, another end face and the close contacting fit of valve seat 8, flap 7 of flap 7
Stroke distances be less than the free end face of fairlead 13 to flap 7 distance；Set on the end face contacted with flap 7 of valve seat 8
One circle special-shaped slot 14, sets polyflon seal 15, the end face contacted in flap 7 with valve seat 8 in special-shaped slot 14
Set one to enclose the conical surface 16, the conical surface 16 coordinates with polyflon seal 15, form sealing pair.
Flap bar 6 is welded with flap 7, and gap coordinates between the endoporus of fairlead 13 of flap bar 6 and bonnet 5；So can be with
Ensure the free positioned-lifting of flap, no jam phenomenon.
The sealing surface of flap 7 is formed by corrosion resisting alloy butt welding.
Valve body 1 is made of corrosion resisting steel；With corrosion-resistant, resistance to erosion, anti-ammonia low temperature situation excellent result；Solve to pass
System plain cast iron, cast steel valve body are easily perforated, not corrosion-resistant, in addition valve body bursting by freezing problem.
Polyflon seal in the end face special-shaped slot 14 of valve seat 8 is by PEPT resins press-in groove, through 375 DEG C
± 5 DEG C of temperature sintering, insulation molding post-processing is formed.
Claims (5)
1. ammonia check valve special, including valve body, bonnet, valve seat, flap, the valve seat are fixed in the valve body, the valve
Body includes setting flange respectively at import, outlet, middle part connector, the import and export, is set at the middle part connector
Adpting flange is put, the import and export is located on same axis, and the middle part connector is located at the vertical of the import and export direction
Direction, the bonnet is sealed with the adpting flange and fixed by multiple bolts, nut；It is characterized in that the inner of the bonnet
Face central integral sets fairlead, and an end face center of the flap is fixedly connected flap bar, and the flap bar coordinates in institute
State in fairlead, another end face of the flap and the valve seat close contacting fit, the stroke distances of the flap are less than
Distance of the fairlead free end face to the flap；One circle abnormity is set on the end face with valve flap contacts of the valve seat
Groove, sets polyflon seal in the special-shaped slot, and the end face contacted in the flap with the valve seat is set
The one circle conical surface, the conical surface coordinates with the polyflon seal, forms sealing pair.
2. ammonia check valve special according to claim 1, it is characterised in that the flap bar is welded with the flap, institute
Gap between flap bar and the fairlead endoporus of the bonnet is stated to coordinate.
3. ammonia check valve special according to claim 1, it is characterised in that the sealing surface of the flap is closed by corrosion-resistant
Golden built-up welding is formed.
4. ammonia check valve special according to claim 1, it is characterised in that the valve body is made of corrosion resisting steel.
5. ammonia check valve special according to claim 1, it is characterised in that the bonnet and the adpting flange it
Between gasket seal is set.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620914128.3U CN206338448U (en) | 2016-08-22 | 2016-08-22 | Ammonia check valve special |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620914128.3U CN206338448U (en) | 2016-08-22 | 2016-08-22 | Ammonia check valve special |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206338448U true CN206338448U (en) | 2017-07-18 |
Family
ID=59298630
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620914128.3U Active CN206338448U (en) | 2016-08-22 | 2016-08-22 | Ammonia check valve special |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206338448U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106051233A (en) * | 2016-08-22 | 2016-10-26 | 江苏金晟元特种阀门股份有限公司 | Check valve special for ammonia gas |
| CN108843827A (en) * | 2018-08-25 | 2018-11-20 | 宿州中矿三杰科技有限公司 | A kind of horizontal check valve |
-
2016
- 2016-08-22 CN CN201620914128.3U patent/CN206338448U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106051233A (en) * | 2016-08-22 | 2016-10-26 | 江苏金晟元特种阀门股份有限公司 | Check valve special for ammonia gas |
| CN108843827A (en) * | 2018-08-25 | 2018-11-20 | 宿州中矿三杰科技有限公司 | A kind of horizontal check valve |
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|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |