CN203477467U - Check valve - Google Patents
Check valve Download PDFInfo
- Publication number
- CN203477467U CN203477467U CN201320336589.3U CN201320336589U CN203477467U CN 203477467 U CN203477467 U CN 203477467U CN 201320336589 U CN201320336589 U CN 201320336589U CN 203477467 U CN203477467 U CN 203477467U
- Authority
- CN
- China
- Prior art keywords
- valve seat
- valve
- sealing
- valve body
- flap
- 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
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Abstract
The utility model discloses a check valve comprising a valve body, a valve seat, a valve clack and a rocking bar. The valve seat is placed in the valve body; a fluid through hole is arranged in the valve body; the fluid through hole runs through the valve seat; the valve seat can be detachably and fixedly connected with the valve body; an end surface of a contact end of the valve seat and the valve clack is provided with an annular groove, in which a sealing member can be placed; the sealing member for sealing is placed in the arc-shaped groove; and the other end surface of the valve seat is provided with an O-shaped sealing ring. The beneficial effects of the check valve are that the check valve prevents the sealing member wearing and the sealing member has strong sealing property; and the check valve can be conveniently machined with easy assembling, disassembling and replacing.
Description
Technical field
The utility model relates to a kind of cut-off device, and more particularly, it relates to a kind of safety check.
Background technique
Safety check claims again check valve, one-way valve or check valve, its effect is to prevent the medium directional flow in pipeline and the function safety check of unlikely refluence belongs to self-acting valve class, be mainly used on the pipeline of medium one-way flow, only allow medium to flow to a direction, to try to avert accidents, safety check refers to and relies on medium itself to flow and automatic open and close flap, is used for preventing the valve that medium flows backwards, and claims again check valve, one-way valve, reflux valve and back pressure valve.Safety check belongs to a kind of automatic valve, and its Main Function is to prevent that medium from flowing backwards, preventing pump and drive motor reversion, and the releasing of vessel media.Safety check also can be used for may rising to the auxiliary system of pressing over system to pressure wherein to be provided on the pipeline of supply.Safety check mainly can be divided into Swing check valve (according to center of gravity rotation) and Lift check valve (moving along axis).In existing safety check, general structure is that soft seal circle is embedded on flap, and when work, due to the souring of medium, seal ring is short working life, and operating cost is high, and after ring wear, sealability is not high, and amount of leakage is large, is unfavorable for the use of operating mode.
Model utility content
The deficiency existing for prior art, the purpose of this utility model is to provide a kind of anti-seal wearing and tearing and sealability is strong, the safety check that is beneficial to processing, assembling and dismounting and change.
For achieving the above object, the utility model provides following technological scheme: a kind of safety check, comprise valve body, valve seat, flap and rocking bar, described valve seat is placed in valve body, in described valve body, is provided with fluid through-hole, and fluid through-hole runs through valve seat, described valve seat is detachably fixedly connected with valve body, the end face of described valve seat and flap contact jaw is provided with for placing the ring groove of Sealing, is provided with the Sealing for sealing in described arc groove, and described valve seat other end is provided with O RunddichtringO.
By adopting technique scheme; adopted Sealing has been embedded in the ring groove of valve seat and flap surface of contact; not only can make sealing between flap and valve seat still exist; when liquid flows through; can directly to Sealing, there is not impact force, certain in the situation that, protect Sealing, increase the working life of Sealing; on the other end end face by valve seat, O RunddichtringO being set again, is further to make its sealability strengthen.And demountable flap is set, can make processing, assembling and dismounting and change more convenient.
The utility model is further set to: between described valve seat and valve body for being threaded.
By adopting technique scheme, at valve seat with valve body Placement for being threaded, the method that much employings are directly welded is fixed, and makes valve body dismounting very inconvenient, employing is threaded to have facilitated greatly and is installed on dismounting.
The utility model is further set to: described Sealing is soft seal circle.
By adopting technique scheme, adopt soft seal circle, can make sealing there is certain elasticity and very strong sealing, when flap, fall on valve seat and also have certain buffer function, avoid colliding with, protected workpiece.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of the utility model embodiment's safety check.
Fig. 2 is the partial enlarged drawing of the utility model embodiment's safety check.
Reference character in figure: 1, valve body; 2, valve seat; 3, O RunddichtringO; 4, Sealing.
Embodiment
Referring to figs. 1 through Fig. 2, the utility model embodiment is described further.
A kind of safety check, comprise valve body 1, valve seat 2, flap and rocking bar, described valve seat 2 is placed in valve body 1, in described valve body 1, be provided with fluid through-hole, fluid through-hole runs through valve seat 2, and described valve seat 2 is detachably fixedly connected with valve body 1, and described valve seat 2 is provided with for placing the ring groove of Sealing 4 with the end face of flap contact jaw, in described arc groove, be provided with the Sealing 4 for sealing, described valve seat 2 other ends are provided with O RunddichtringO 3.
By adopting technique scheme; adopted Sealing 4 has been embedded in the ring groove of valve seat 2 and flap surface of contact; not only can make sealing between flap and valve seat 2 still exist; when liquid flows through; can directly to Sealing 4, there is not impact force, certain in the situation that, protect Sealing 4, increase the working life of Sealing 4; on the other end end face by valve seat, O RunddichtringO 3 being set again, is further to make its sealability strengthen.And demountable valve seat 2 is set, can make processing, assembling and dismounting and change more convenient.
Between described valve seat 2 and valve body 1 for being threaded.Also can adopt welding and bolt to connect, but adopt the words of welding, directly valve seat 2 and valve body 1 are welded, caused dismounting inconvenient, words with bolts have existed certain sealability not strong, easily occur water leakage phenomenon, so being threaded in preferred embodiment, both can be for convenience detach, also itself there is certain sealing.
Described Sealing 4 is soft seal circle.So that sealing has certain elasticity and very strong sealing, when flap, fall on valve seat 2 and make also there is certain buffer function, avoid colliding with, protected workpiece.
The foregoing is only preferred embodiment of the present utility model, not in order to limit the utility model, those skilled in the art carries out common variation and replaces should being included in protection domain of the present utility model within the scope of technical solutions of the utility model.
Claims (2)
1. a safety check, comprise valve body, valve seat, flap and rocking bar, described valve seat is placed in valve body, in described valve body, be provided with fluid through-hole, fluid through-hole runs through valve seat, it is characterized in that: described valve seat is detachably fixedly connected with valve body, the end face of described valve seat and flap contact jaw is provided with for placing the ring groove of Sealing, in described ring groove, be provided with the Sealing for sealing, described valve seat other end is provided with O RunddichtringO, described valve seat with valve body for being threaded.
2. safety check according to claim 1, is characterized in that: described Sealing is soft seal circle.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201320336589.3U CN203477467U (en) | 2013-06-08 | 2013-06-08 | Check valve |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201320336589.3U CN203477467U (en) | 2013-06-08 | 2013-06-08 | Check valve |
Publications (1)
Publication Number | Publication Date |
---|---|
CN203477467U true CN203477467U (en) | 2014-03-12 |
Family
ID=50225798
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN201320336589.3U Expired - Fee Related CN203477467U (en) | 2013-06-08 | 2013-06-08 | Check valve |
Country Status (1)
Country | Link |
---|---|
CN (1) | CN203477467U (en) |
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2013
- 2013-06-08 CN CN201320336589.3U patent/CN203477467U/en not_active Expired - Fee Related
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
GR01 | Patent grant | ||
GR01 | Patent grant | ||
C17 | Cessation of patent right | ||
CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140312 Termination date: 20140608 |