CN203477474U - Check valve - Google Patents
Check valve Download PDFInfo
- Publication number
- CN203477474U CN203477474U CN201320543537.3U CN201320543537U CN203477474U CN 203477474 U CN203477474 U CN 203477474U CN 201320543537 U CN201320543537 U CN 201320543537U CN 203477474 U CN203477474 U CN 203477474U
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- CN
- China
- Prior art keywords
- seal ring
- groove
- annular boss
- valve
- valve body
- 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 and aims to provide the check valve with high sealing performance. The check valve is characterized in that an annular boss is arranged on an end face where a valve cover is connected with a valve body, a first groove is arranged on the annular boss, a first sealing ring is arranged in the first groove, a round hole matched with the annular boss is arranged on the valve body, a second groove and a third groove are arranged at a position of the round hole corresponding to the annular boss, the second groove is provided with a second sealing ring, the third groove is provided with a third sealing ring, the first sealing ring is abutted to a bottom face of the round hole, and the second sealing ring and the third sealing ring are abutted to the annular boss. The first sealing ring is arranged on the valve cover of the check valve, the second sealing ring and the third sealing ring are arranged on the valve body, so that a multiple sealing effect can be achieved. Furthermore, all sealing rings are arranged in corresponding grooves, so that stability of the sealing rings is guaranteed, and sealing performance of the check valve is effectively improved.
Description
Technical field
The utility model relates to a kind of valve, and more particularly, it relates to a kind of safety check.
Background technique
Safety check claims again check valve, one-way valve, one-way valve or check valve, and its effect is to guarantee medium directional flow in pipeline and the function of unlikely refluence; The bottom valve of water pump suction pipe also belongs to safety check class.Safety check is divided by structure, can be divided into three kinds of Lift check valve, Swing check valve and butterfly check valves.Swing check valve claims again one-way valve or check valve, and its effect is to prevent that the medium in pipeline from flowing backwards.
The safety check that had in the market mainly contains valve gap, valve body and is arranged on the installation composition of valve inner; between valve gap and valve body, need to guarantee sealability; the valve gap of existing safety check and valve body are only provided with simple gasket seal; only has one deck sealing effect; its sealability a little less than; often can leak, cause unnecessary waste.
Model utility content
The deficiency existing for prior art, the purpose of this utility model is to provide a kind of safety check with stronger sealability.
For achieving the above object, the utility model provides following technological scheme: a kind of safety check, comprise valve gap, valve body, described valve gap is fixedly connected on valve body, the end face that described valve gap is connected with valve body is provided with annular boss, annular boss is provided with the first groove, in described the first groove, be provided with the first seal ring, described valve body is provided with the circular hole suitable with annular boss, the position that circular hole is relative with annular boss is provided with the second groove and the 3rd groove, the second described groove is provided with the second seal ring, in the 3rd described groove, be provided with the 3rd seal ring, described the first seal ring and circular hole bottom surface are inconsistent, the second described seal ring and the 3rd seal ring and annular boss are inconsistent.
The utility model is further set to: the first described groove is located between the second groove and the 3rd groove.
The utility model is further set to: the first described seal ring, the second seal ring and the 3rd seal ring are felt seal, and the first seal ring bi-side fit with the second seal ring side and the 3rd seal ring side respectively.
The utility model is further set to: on described valve gap, valve body, be coated with stellite.
By adopting technique scheme, the valve gap of this safety check is provided with the first seal ring, valve body is provided with the second seal ring and the 3rd seal ring, it can play multi-sealed effect, and all seal rings are all arranged in corresponding groove, guarantee the stability of seal ring, effectively improved the sealability of this safety check.
Accompanying drawing explanation
Fig. 1 is the structure sectional view of the utility model safety check.
Fig. 2 is the partial enlarged drawing of A in Fig. 1.
Reference character: 1, valve gap; 2, valve body; 3, annular boss; 31, the first groove; 4, the first seal ring; 5, circular hole; 51, the second groove; 52, the 3rd groove; 6, the second seal ring; 7, the 3rd seal ring.
Embodiment
Referring to figs. 1 through Fig. 2, the utility model safety check embodiment is described further.
A kind of safety check, comprise valve gap 1, valve body 2, described valve gap 1 is fixedly connected on valve body 2, the end face that described valve gap 1 is connected with valve body 2 is provided with annular boss 3, annular boss 3 is provided with the first groove 31, in described the first groove 31, be provided with the first seal ring 4, described valve body 2 is provided with the circular hole 5 suitable with annular boss 3, the position that circular hole 5 is relative with annular boss 3 is provided with the second groove 51 and the 3rd groove 52, the second described groove 51 is provided with the second seal ring 6, in the 3rd described groove 52, be provided with the 3rd seal ring 7, the first described seal ring 4 is inconsistent with circular hole 5 bottom surfaces, the second described seal ring 6 and the 3rd seal ring 7 are inconsistent with annular boss 3.First annular boss 3 on this safety check and the cooperation of circular hole 5 form a resealing, valve gap 1 is provided with the first seal ring 4, valve body 2 is provided with the second seal ring 6 and the 3rd seal ring 7, form again multi-sealed effect, and all seal rings are all arranged in corresponding groove, guaranteed the stability of seal ring, effectively improved the sealability of this safety check, because valve gap 1 is limited with the seal f ace width of valve body 2, guaranteeing under the validity of each seal ring, seal ring can not be narrow, need to there is certain width, so be only provided with three seal rings.
The first described groove 31 is located between the second groove 51 and the 3rd groove 52.The first groove 31 is located between the second groove 51 and the 3rd groove 52, and the seal ring that makes to be arranged on these grooves can be interlaced, makes more to have improved this multi-sealed effect.
Described the first seal ring 4, the second seal ring 6 and the 3rd seal ring 7 are felt seal, and the first seal ring 4 bi-side fit with the second seal ring 6 sides and the 3rd seal ring 7 sides respectively.Because felt seal cross section is square, side has certain length can fit, and makes laminating between the first adjacent seal ring 4 and the second seal ring 6, the first seal ring 4 and the 3rd seal ring 7, makes sealing tighter, has greatly improved sealing effect.
On described valve gap 1, valve body 2, be coated with stellite.Stellite is the cemented carbide of a kind of ability all kinds abrasion and corrosion and high temperature oxidation, is electroplated on valve gap 1 and valve body 2, can effectively improve wear-resisting, the corrosion-resistant and resistant to elevated temperatures performance of this safety check, has extended working life.
Claims (4)
1. a safety check, comprise valve gap, valve body, described valve gap is fixedly connected on valve body, it is characterized in that: the end face that described valve gap is connected with valve body is provided with annular boss, annular boss is provided with the first groove, in described the first groove, be provided with the first seal ring, described valve body is provided with the circular hole suitable with annular boss, the position that circular hole is relative with annular boss is provided with the second groove and the 3rd groove, the second described groove is provided with the second seal ring, in the 3rd described groove, be provided with the 3rd seal ring, described the first seal ring and circular hole bottom surface are inconsistent, the second described seal ring and the 3rd seal ring and annular boss are inconsistent.
2. safety check according to claim 1, is characterized in that: the first described groove is located between the second groove and the 3rd groove.
3. safety check according to claim 1 and 2, is characterized in that: the first described seal ring, the second seal ring and the 3rd seal ring are felt seal, and the first seal ring bi-side fit with the second seal ring side and the 3rd seal ring side respectively.
4. safety check according to claim 3, is characterized in that: on described valve gap, valve body, be coated with stellite.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320543537.3U CN203477474U (en) | 2013-09-02 | 2013-09-02 | Check valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320543537.3U CN203477474U (en) | 2013-09-02 | 2013-09-02 | Check valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203477474U true CN203477474U (en) | 2014-03-12 |
Family
ID=50225805
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320543537.3U Expired - Fee Related CN203477474U (en) | 2013-09-02 | 2013-09-02 | Check valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203477474U (en) |
-
2013
- 2013-09-02 CN CN201320543537.3U patent/CN203477474U/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 |
Granted publication date: 20140312 Termination date: 20140902 |
|
| EXPY | Termination of patent right or utility model |