CN202252040U - Check valve with novel valve clack - Google Patents
Check valve with novel valve clack Download PDFInfo
- Publication number
- CN202252040U CN202252040U CN2011203091324U CN201120309132U CN202252040U CN 202252040 U CN202252040 U CN 202252040U CN 2011203091324 U CN2011203091324 U CN 2011203091324U CN 201120309132 U CN201120309132 U CN 201120309132U CN 202252040 U CN202252040 U CN 202252040U
- Authority
- CN
- China
- Prior art keywords
- valve
- flap
- end part
- underpart
- end portion
- 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 relates to a check valve with a novel valve clack, which comprises a valve body, the valve clack, a valve clack pressing cover, a valve rod and a valve cover. The valve clack is arranged between the valve body and the valve rod. The valve clack pressing cover is arranged on the valve clack. The valve body is connected with the valve cover. The valve clack comprises an upper end part and a lower end part. The upper end part is provided with a cylindrical groove. The valve rod is embedded in the cylindrical groove. The lower end part comprises an inside lower end part and an outside lower end part. An annular groove is arranged between the inside lower end part and the outside lower end part. Compared with the prior art, the check valve with the valve clack provided by the utility model has the advantages of small closing torque, portable operation, tightness, reliability, safety in use, etc.
Description
Technical field
The utility model relates to a kind of stop valve, especially relates to a kind of stop valve with novel flap.
Background technique
The sealing surface of stop valve flap has plane sealing, three kinds of forms of ball face sealing and conical surface seal at present.Wherein the most frequently used is the conical surface seal form, as shown in Figure 1.But this stop valve flap seal form will overcome the medium back pressure on the suffered whole plane of flap when valve closing, thus make valve to close moment bigger.It is closed moment and just is directly proportional with the caliber size of valve and the pressure of medium.The bore that is to say valve is big more, and pressure medium is high more, then valve to close moment just big more.Therefore, particularly (>=600LB) stop valve exists and is difficult for fastening and causes the insecure defective of sealability to heavy caliber (>=8 ") or high pressure.
The model utility content
The purpose of the utility model is exactly for the defective that overcomes above-mentioned existing technology existence a kind of stop valve with novel flap that moment is little, operation is light, sealing is reliable, safe in utilization of closing to be provided.
The purpose of the utility model can realize through following technological scheme:
A kind of stop valve with novel flap comprises valve body, flap, flap gland, valve rod and valve gap, and described flap is located between valve body and the valve rod; Described flap gland is located on the flap; Described valve body is connected with valve gap, it is characterized in that, described flap comprises upper end portion and underpart; Described upper end portion is provided with cylinder shape groove; Described valve rod embeds in the cylinder shape groove, and described underpart comprises inside lower end portion and underpart, the outside, is provided with annular groove between described inside lower end portion and the underpart, the outside.
The longitudinal section of described inside lower end portion is arc-shaped structure.
Underpart, the described outside and valve body joint are provided with seal ring.
Compared with prior art, the utlity model has following advantage:
1) overcome heavy caliber and high pressure stop valve existing the pass tight, be prone to leak, shortcoming such as sealing is unreliable;
2) reduced valve closing moment, operated lightly, can avoid the use of is to increase the bumping type handwheel close moment originally; When the electronic or pneumatic self-control implementation of employing mechanism, but energy saving;
3) sealing is reliable, safe in utilization.
Description of drawings
Fig. 1 is the structural representation of existing stop valve;
Fig. 2 is the structural representation of the utility model;
Fig. 3 is the structural representation of the flap of the utility model.
Embodiment
Below in conjunction with accompanying drawing and specific embodiment the utility model is elaborated.
Embodiment
Like Fig. 2, shown in 3, a kind of stop valve with novel flap comprises valve body 1, flap 2, flap gland 3, valve rod 4 and valve gap 5; Described flap 2 is located between valve body 1 and the valve rod 4; Described flap gland 3 is located on the flap 2, and described valve body 1 is connected with valve gap 5, and described flap 2 comprises upper end portion 21 and underpart; Described upper end portion is provided with cylinder shape groove; Described valve rod 4 embeds in the cylinder shape groove, and described underpart comprises inside lower end portion 23 and underpart, the outside 22, is provided with annular groove between described inside lower end portion 23 and the underpart, the outside 22.The longitudinal section of described inside lower end portion 23 is arc-shaped structure.Underpart, the described outside 22 is provided with seal ring with the valve body joint.
Owing to changed the shape of flap stress surface; So that the stressing conditions of flap has had tangible change; Both reduce compression area, and can form positive force again the sealing force between flap and sealing surface of seat is increased, also had the effect of elastic packing performance compensation simultaneously; Thereby improved sealability, guaranteed the Security that valve uses.
After the stop valve flap improved shape; Its stressing conditions has obtained changing with having had as gate valve and has adopted the same sealability compensating action of Flexible disc; Thereby the moment of closing of valve is reduced, can practice thrift the manpower and the energy, sealability improves and is safe and reliable.
Claims (3)
1. the stop valve with novel flap comprises valve body, flap, flap gland, valve rod and valve gap, and described flap is located between valve body and the valve rod; Described flap gland is located on the flap; Described valve body is connected with valve gap, it is characterized in that, described flap comprises upper end portion and underpart; Described upper end portion is provided with cylinder shape groove; Described valve rod embeds in the cylinder shape groove, and described underpart comprises inside lower end portion and underpart, the outside, is provided with annular groove between described inside lower end portion and the underpart, the outside.
2. a kind of stop valve with novel flap according to claim 1 is characterized in that, the longitudinal section of described inside lower end portion is arc-shaped structure.
3. a kind of stop valve with novel flap according to claim 1 is characterized in that underpart, the described outside and valve body joint are provided with seal ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203091324U CN202252040U (en) | 2011-08-23 | 2011-08-23 | Check valve with novel valve clack |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203091324U CN202252040U (en) | 2011-08-23 | 2011-08-23 | Check valve with novel valve clack |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202252040U true CN202252040U (en) | 2012-05-30 |
Family
ID=46113283
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011203091324U Expired - Fee Related CN202252040U (en) | 2011-08-23 | 2011-08-23 | Check valve with novel valve clack |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202252040U (en) |
-
2011
- 2011-08-23 CN CN2011203091324U patent/CN202252040U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120530 Termination date: 20140823 |
|
| EXPY | Termination of patent right or utility model |