CN203516878U - Through flow type check valve for chlorine gas - Google Patents

Through flow type check valve for chlorine gas Download PDF

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Publication number
CN203516878U
CN203516878U CN201320683537.3U CN201320683537U CN203516878U CN 203516878 U CN203516878 U CN 203516878U CN 201320683537 U CN201320683537 U CN 201320683537U CN 203516878 U CN203516878 U CN 203516878U
Authority
CN
China
Prior art keywords
valve
flap
valve seat
seat
clack
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.)
Withdrawn - After Issue
Application number
CN201320683537.3U
Other languages
Chinese (zh)
Inventor
毛春龙
毛金根
杨慧平
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 Valve Co Ltd
Original Assignee
Jiangsu Jinshengyuan Special Valve Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Jiangsu Jinshengyuan Special Valve Co Ltd filed Critical Jiangsu Jinshengyuan Special Valve Co Ltd
Priority to CN201320683537.3U priority Critical patent/CN203516878U/en
Application granted granted Critical
Publication of CN203516878U publication Critical patent/CN203516878U/en
Withdrawn - After Issue legal-status Critical Current
Anticipated expiration legal-status Critical

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Abstract

The utility model provides a through flow type check valve for chlorine gas, and relates to the technical field of a valve design. The through flow type check valve comprises a valve body, a valve seat and a valve clack, wherein the valve seat is in threaded connection in the lower end of the valve body; a winding type seal gasket is arranged between the valve body and the valve seat, and below the position where the valve body is in threaded connection with the valve seat; the valve clack is arranged above the valve seat, and is connected with the valve seat in a sealing manner; the valve clack comprises a valve clack body and a valve clack rod body which is integrally arranged above the center of the valve clack body, and a blind hole is formed in the valve clack rod body; the lower surface of the valve clack body is an upward bulged arch surface, and the upper surface of the valve clack body is a downward inclined slope; and a valve body middle support is arranged in an inner cavity of the valve body, and the valve clack rod body is sleeved with a guide nut which is in threaded connection with the valve body middle support. The through flow type check valve has the advantages of novel design, reasonable structure, excellent sealing performance, and good check effect and accuracy; a scour problem of fluid media is solved, the application performance is guaranteed, and the service life is prolonged.

Description

Chlorine cross flow check valve
Technical field
The utility model relates to valve design technical field, particularly chlorine cross flow check valve.
Background technique
At present, the safety check using on domestic chemical industry and other field pipeline, is general check valve.Structure is ancient, heaviness, and performance can not meet the usage requirement of operating mode, often occurs because of safety check flap return well, makes the medium back flow even generation of accident that causes damage.Particularly suitable for reading at the chlorine gas pump of alkali chemical industry enterprises, because safety check does not only live, fluid falls after rise pump is worked in the other direction, causes device damage, and affects systemic breakdown.
Model utility content
The utility model object is for above problem, provides a kind of and can rationally solve washing away of flowing medium, guarantees usability, improves the chlorine cross flow check valve in working life,
The utility model comprises valve body, valve seat, flap, and described valve seat is threaded in valve body lower end; Wrap style gasket seal is set between described valve body and valve seat, and described wrap style gasket seal is arranged on the below of valve body and valve seat threaded connection place; Described flap is arranged on valve seat top; Between described flap and valve seat, be tightly connected; Described flap comprises flap body, the flap body of rod, and described flap body of rod disjunctor is arranged on the top, center of flap body, in the described flap body of rod, is provided with blind hole; The lower surface of described flap body is the arch face raising up, and the upper surface of described flap body is downward-sloping domatic; Described body cavity is provided with valve body middle bracket, on the described flap body of rod, is nested with spigot nut, and described spigot nut is threaded with valve body middle bracket.
The utility model working principle is: by medium be pipeline pressure be used for realize valve and start and close.When medium raises pressure flap certain, rise, when pressure drop or lose pressure, flap glides rapidly flap by the weight of self and the pressure medium of valve inner, makes valve closing, prevents medium back flow.
The utility model is vertically to install, the arch face of flap body bottom for raising up, top is downward-sloping domatic, can guarantee that valve open medium is little to sealing surface scouring force, while closing simultaneously due to the taper on top, the flowing medium of valve pocket returns rapidly and impacts around sealing surface of seat, makes this region be not easy legacy, guarantees the clean of sealing surface.Valve seat and valve body adopt and are threaded, and adopt spiral wound gaskets sealing, its sealing effect of Reliable guarantee, and valve seat bottom surface is again as the sealing surface being connected with pipeline simultaneously, is connected after stressed further guarantees that medium does not leak outside with pipeline, forms to insure to seal.Flap coordinates with valve body by spigot nut, and its quality of fit of Reliable guarantee and the effect sliding up and down, make flap not be subject to the fluctuation of pressure medium and affect lifting.The utility model is novel in design, rational in infrastructure, has solved washing away of flowing medium, guarantees usability, improves working life, has sealability superior, and non-return is effective, precisely puts in place.
On the sealing surface of valve seat described in the utility model and flap, surfacing has corrosion resisting alloy respectively.
The utility model arranges horse shoe shaped groove at described sealing surface of seat, and compacting sintering teflon seal material in described horse shoe shaped groove, has corrosion resisting alloy at described valve clack sealing surface surfacing.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Fig. 2 is another kind of structural representation of the present utility model.
Embodiment
As shown in Figure 1, the utility model comprises valve body 1, valve seat 2, flap 3, and valve seat 2 is threaded in valve body 1 lower end; Between valve body 1 and valve seat 2, wrap style gasket seal 4 is set, wrap style gasket seal 4 is arranged on the below of valve body 1 and valve seat 2 threaded connection places; Flap 3 is arranged on valve seat 2 tops; Between flap 3 and valve seat 2, be tightly connected, on the sealing surface of valve seat 2 and flap 3, surfacing has corrosion resisting alloy 5 respectively; Flap 3 comprises flap body 3-1, flap body of rod 3-2, and flap body of rod 3-2 disjunctor is arranged on top, flap body 3-1 center, in flap body of rod 3-2, is provided with blind hole 6; The lower surface of flap body 3-1 is the arch face 3-1-1 raising up, and the upper surface of flap body 3-1 is downward-sloping domatic 3-1-2; Valve body 1 inner chamber is provided with valve body middle bracket 7, on flap body of rod 3-2, is nested with spigot nut 8, and spigot nut 8 is threaded with valve body middle bracket 7.
As shown in Figure 2, at valve seat 2 sealing surfaces, horse shoe shaped groove 9 is set, at the interior compacting sintering teflon seal of horse shoe shaped groove 9 material 10, at flap 3 sealing surface surfacings, has corrosion resisting alloy 5.

Claims (3)

1. chlorine cross flow check valve, comprises valve body, valve seat, flap, it is characterized in that: described valve seat is threaded in valve body lower end; Wrap style gasket seal is set between described valve body and valve seat, and described wrap style gasket seal is arranged on the below of valve body and valve seat threaded connection place; Described flap is arranged on valve seat top; Between described flap and valve seat, be tightly connected; Described flap comprises flap body, the flap body of rod, and described flap body of rod disjunctor is arranged on the top, center of flap body, in the described flap body of rod, is provided with blind hole; The lower surface of described flap body is the arch face raising up, and the upper surface of described flap body is downward-sloping domatic; Described body cavity is provided with valve body middle bracket, on the described flap body of rod, is nested with spigot nut, and described spigot nut is threaded with valve body middle bracket.
2. chlorine cross flow check valve according to claim 1, is characterized in that: on the sealing surface of described valve seat and flap, surfacing has corrosion resisting alloy respectively.
3. chlorine cross flow check valve according to claim 1, is characterized in that: at described sealing surface of seat, horse shoe shaped groove is set, compacting sintering teflon seal material in described horse shoe shaped groove, has corrosion resisting alloy at described valve clack sealing surface surfacing.
CN201320683537.3U 2013-11-01 2013-11-01 Through flow type check valve for chlorine gas Withdrawn - After Issue CN203516878U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201320683537.3U CN203516878U (en) 2013-11-01 2013-11-01 Through flow type check valve for chlorine gas

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201320683537.3U CN203516878U (en) 2013-11-01 2013-11-01 Through flow type check valve for chlorine gas

Publications (1)

Publication Number Publication Date
CN203516878U true CN203516878U (en) 2014-04-02

Family

ID=50375810

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201320683537.3U Withdrawn - After Issue CN203516878U (en) 2013-11-01 2013-11-01 Through flow type check valve for chlorine gas

Country Status (1)

Country Link
CN (1) CN203516878U (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103542152A (en) * 2013-11-01 2014-01-29 江苏金晟元特种阀门有限公司 Through-flow check valve for chlorine

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103542152A (en) * 2013-11-01 2014-01-29 江苏金晟元特种阀门有限公司 Through-flow check valve for chlorine

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Legal Events

Date Code Title Description
GR01 Patent grant
C14 Grant of patent or utility model
AV01 Patent right actively abandoned

Granted publication date: 20140402

Effective date of abandoning: 20151202

C25 Abandonment of patent right or utility model to avoid double patenting