CN206338448U - Ammonia check valve special - Google Patents

Ammonia check valve special Download PDF

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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
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CN
China
Prior art keywords
flap
valve
face
bonnet
special
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Active
Application number
CN201620914128.3U
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Chinese (zh)
Inventor
毛春龙
毛金根
陈善俊
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
JIANGSU JINSHENGYUAN SPECIAL VALVES CO Ltd
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JIANGSU JINSHENGYUAN SPECIAL VALVES CO Ltd
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Priority to CN201620914128.3U priority Critical patent/CN206338448U/en
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Publication of CN206338448U publication Critical patent/CN206338448U/en
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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

Ammonia check valve special
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.
CN201620914128.3U 2016-08-22 2016-08-22 Ammonia check valve special Active CN206338448U (en)

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

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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)

* Cited by examiner, † Cited by third party
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

Cited By (2)

* Cited by examiner, † Cited by third party
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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