CN203115192U - Check valve - Google Patents
Check valve Download PDFInfo
- Publication number
- CN203115192U CN203115192U CN 201220698941 CN201220698941U CN203115192U CN 203115192 U CN203115192 U CN 203115192U CN 201220698941 CN201220698941 CN 201220698941 CN 201220698941 U CN201220698941 U CN 201220698941U CN 203115192 U CN203115192 U CN 203115192U
- Authority
- CN
- China
- Prior art keywords
- flap
- sealing
- valve body
- sealing surface
- safety check
- 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 - Lifetime
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- Details Of Valves (AREA)
- Check Valves (AREA)
Abstract
The utility model discloses a check valve, belonging to a pipeline opening and closing part. Due to adoption of the check valve, the noise in opening and closing of the check valve is reduced, and the sealing reliability under the low-pressure state is enhanced. The check valve comprises a valve flap arranged in the valve body; the valve body is internally provided with a sealing surface corresponding to the valve flap; the side surface, which corresponds to the sealing surface, of the valve flap is provided with a sealing piece; and the valve body is internally provided with an elastic piece which maintains the pressure from the valve flap to the sealing surface and enables the sealing piece to be matched with the sealing surface in a sealing manner. The check valve disclosed by the utility model is used in a pipeline system for preventing backflow of liquid.
Description
Technical field
The utility model relates to a kind of safety check.
Background technique
General safety check, the flap of transferring in valve body arranges two relative sealing surfaces at valve body and flap.During water inlet, flap is owing to be subjected to the impulse force unlatching of water, and safety check is in opening state.After stopping into water, flap is by the gravity of self and the sealing surface crush seal of valve body.Because these two sealing surfaces are hard sealing structures, sealing reliability under low pressure is not enough, and noise is bigger when closure of check ring.Repeated open and close cause two sealing surfaces to damage, and back extended meeting causes problems such as leakage.
The model utility content
Problem to be solved in the utility model just provides a kind of safety check, the noise when reducing closure of check ring, and strengthened the sealing reliability under the low-pressure state.
In order to achieve the above object, the utility model adopts following technological scheme: a kind of safety check, comprise the flap that is located in the valve body, be provided with the sealing surface corresponding with flap in the described valve body, side corresponding with sealing surface on the described flap is provided with Sealing, is provided with maintenance in the described valve body flap is pressed to the elastic component that sealing surface is sealed and matched Sealing and sealing surface.
Further, described Sealing is diaphragm seal, and the outer side of described diaphragm seal is along the outside that is positioned at the outer side edge of sealing surface.Cooperate completely with sealing surface, guarantee sealing.
Further, described diaphragm seal is fixed on the flap by screw.It is easy for installation,
Further, be installed with the pad that compresses diaphragm seal on the described screw.The fixed effect of enhanced leaktightness sheet.
Further, described Sealing is seal ring, and on flap, described pad is pressed in the inner ring edge of seal ring to described seal ring by screw and spacers, and the outer side of described seal ring is along the outside that is positioned at the outer side edge of sealing surface.Save sealing member material.
Further, described elastic component is the U-shaped spring, and the two ends of U-shaped spring are fixed on the valve body, and the middle part of U-shaped spring is fitted on the flap.In conjunction with the structure of valve inner, under atmospheric pressure state, make the sealing of Sealing and sealing surface tightr, under low-pressure state, flap and Sealing are compensated, guarantee sealing reliability.
Further, the middle part of described U-shaped spring is fitted in the middle part of flap.Best results.
Further, described flap switching is on valve body.Also can the slippage setting.
Further, the fixed connection place of switching place of described flap and valve body and U-shaped spring and valve body is positioned at the same side of sealing surface.Be convenient to unlatching or closed condition that flap moves to change safety check.
Further, described valve body is provided with valve port, and the fixed connection place of switching place of described flap and valve body and U-shaped spring and valve body is all near the valve port setting.Being convenient to flap and U-shaped spring installs, overhauls.
After adopting technique scheme, the utlity model has following advantage: by the sealing surface in Sealing and the valve body, need not to arrange sealing surface on the flap, effectively prevent that the sealing surface in the valve body from damaging simultaneously, protection sealing surface, prolongation product working life; Can also reduce simultaneously the noise of safety check when sealing; Realize that by elastic component Sealing has compensation when sealing, strengthened the sealing reliability under the low-pressure state.
Description of drawings
The utility model is described in further detail below in conjunction with accompanying drawing:
Fig. 1 is a kind of embodiment's of the utility model structural representation.
Embodiment
Be illustrated in figure 1 as a kind of embodiment of the utility model, a kind of safety check, comprise the flap 2 that is located in the valve body 1, be provided with the sealing surface 11 corresponding with flap 2 in the described valve body 1, side corresponding with sealing surface 11 on the described flap 2 is provided with Sealing 3, is provided with maintenance in the described valve body 1 flap 2 is pressed to the elastic component 4 that sealing surface 11 is sealed and matched Sealing 3 and sealing surface 11.In the present embodiment, described Sealing 3 is diaphragm seal, and the outer side of described diaphragm seal is along the outside that is positioned at the outer side edge of sealing surface 11.Described diaphragm seal is fixed on the flap 2 by screw 5.Further the fixed effect of enhanced leaktightness sheet is installed with the pad 6 that compresses diaphragm seal on the described screw 5.
Described elastic component 4 is the U-shaped spring, and the two ends of U-shaped spring are fixed on the valve body 1, and the middle part of U-shaped spring is fitted on the flap 2.Preferably the middle part of described U-shaped spring is fitted in the middle part of flap 2.No matter safety check is under unlatching or closed condition, U-shaped spring is only fitted with flap 2, does not need to pass or be connected to flap 2 by fastening piece, and being in place separately gets final product, simple and convenient.Here, we on valve body 1, in addition also can arrange the slideway for flap 2 slippages with 2 switchings of described flap in valve body 1, so also can realize the unlatching of safety check or close.
Further concrete, switching place of described flap 2 and valve body 1 and the fixed connection place of U-shaped spring and valve body 1 are positioned at the same side of sealing surface 11.Same conduct is preferred, and described valve body 1 is provided with valve port 12, and described flap 2 all arranges near valve port 12 with switching place of valve body 1 and the fixed connection place of U-shaped spring and valve body 1, is convenient to flap 2 and U-shaped spring and installs, overhauls.
In above-described embodiment, described Sealing 3 also can adopt seal ring, described seal ring is fixed on the flap 2 by screw 5 and pad 6, and described pad 6 is pressed in the inner ring edge of seal ring, and the outer side of described seal ring is along the outside that is positioned at the outer side edge of sealing surface 11.
The utility model becomes the sealing surfaces of original two hard sealings into a hard sealing surface and a soft Sealing, need not to arrange sealing surface on the flap, effectively prevents that the sealing surface in the valve body from damaging simultaneously, and the protection sealing surface prolongs product working life; Can also reduce simultaneously the noise of safety check when sealing; Realize that by elastic component Sealing has compensation when sealing, strengthened the sealing reliability under the low-pressure state.
Except above preferred embodiment, the utility model also has other mode of execution, those skilled in the art can make various changes and distortion according to the utility model, only otherwise break away from spirit of the present utility model, all should belong to the defined scope of the utility model claims.
Claims (10)
1. safety check, comprise the flap that is located in the valve body, be provided with the sealing surface corresponding with flap in the described valve body, it is characterized in that: side corresponding with sealing surface on the described flap is provided with Sealing, is provided with maintenance in the described valve body flap is pressed to the elastic component that sealing surface is sealed and matched Sealing and sealing surface.
2. a kind of safety check according to claim 1, it is characterized in that: described Sealing is diaphragm seal, the outer side of described diaphragm seal is along the outside that is positioned at the outer side edge of sealing surface.
3. a kind of safety check according to claim 2, it is characterized in that: described diaphragm seal is fixed on the flap by screw.
4. a kind of safety check according to claim 3 is characterized in that: be installed with the pad that compresses diaphragm seal on the described screw.
5. a kind of safety check according to claim 1, it is characterized in that: described Sealing is seal ring, on flap, described pad is pressed in the inner ring edge of seal ring to described seal ring by screw and spacers, and the outer side of described seal ring is along the outside that is positioned at the outer side edge of sealing surface.
6. according to the arbitrary described a kind of safety check of claim 1 to 5, it is characterized in that: described elastic component is the U-shaped spring, and the two ends of U-shaped spring are fixed on the valve body, and the middle part of U-shaped spring is fitted on the flap.
7. a kind of safety check according to claim 6, it is characterized in that: the middle part of described U-shaped spring is fitted in the middle part of flap.
8. a kind of safety check according to claim 6 is characterized in that: described flap switching is on valve body.
9. a kind of safety check according to claim 8, it is characterized in that: the fixed connection place of switching place of described flap and valve body and U-shaped spring and valve body is positioned at the same side of sealing surface.
10. a kind of safety check according to claim 9, it is characterized in that: described valve body is provided with valve port, and the fixed connection place of switching place of described flap and valve body and U-shaped spring and valve body is all near the valve port setting.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220698941 CN203115192U (en) | 2012-12-17 | 2012-12-17 | Check valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220698941 CN203115192U (en) | 2012-12-17 | 2012-12-17 | Check valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203115192U true CN203115192U (en) | 2013-08-07 |
Family
ID=48895540
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220698941 Expired - Lifetime CN203115192U (en) | 2012-12-17 | 2012-12-17 | Check valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203115192U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103851234A (en) * | 2014-02-21 | 2014-06-11 | 武汉圣禹排水***有限公司 | Low-resistance zero-pressure sealing rubber flap valve checking device |
-
2012
- 2012-12-17 CN CN 201220698941 patent/CN203115192U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103851234A (en) * | 2014-02-21 | 2014-06-11 | 武汉圣禹排水***有限公司 | Low-resistance zero-pressure sealing rubber flap valve checking device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP03 | Change of name, title or address |
Address after: 311835 Zhuji port industrial area, Zhejiang Patentee after: ZHEJIANG DUNAN VALVE Co.,Ltd. Address before: 311835 Zhuji City, Zhejiang Province Industrial Zone, mouth shop Patentee before: ZHEJIANG DUNAN VALVE Co.,Ltd. |
|
| CP03 | Change of name, title or address | ||
| CP03 | Change of name, title or address |
Address after: 311800 Zhejiang city in Shaoxing Province town of Zhuji city shop Industrial Zone Patentee after: Zhejiang deai Intelligent Control Technology Co.,Ltd. Address before: 311835 Zhuji port industrial area, Zhejiang Patentee before: ZHEJIANG DUNAN VALVE Co.,Ltd. |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130807 |