CN201547333U - Check mechanism for improving check valve - Google Patents
Check mechanism for improving check valve Download PDFInfo
- Publication number
- CN201547333U CN201547333U CN2009202098583U CN200920209858U CN201547333U CN 201547333 U CN201547333 U CN 201547333U CN 2009202098583 U CN2009202098583 U CN 2009202098583U CN 200920209858 U CN200920209858 U CN 200920209858U CN 201547333 U CN201547333 U CN 201547333U
- Authority
- CN
- China
- Prior art keywords
- valve
- check
- flap
- spring
- 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 - Fee Related
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- Details Of Valves (AREA)
- Check Valves (AREA)
Abstract
The utility model relates to the technical field of a check valve, in particular to a check mechanism for improving a check valve, which comprises a valve seat, a valve cover, a valve rod, a valve clack, a spring and a guide frame and is characterized in that the valve rod is connected with the valve cover, the valve clack and the gride frame sequentially from top to bottom; the outside of the valve rod between the valve cover and the valve clack is sleeved with the spring; and the bottom of the spring is provided with an adjusting nut. Compared with the prior art, the check mechanism for improving the check valve has short closing stroke of the valve clack, which is only 1/4 of the inside nominal diameter, reduces the closing time of the valve clack and reduces generation of the water hammer so as to further guarantee the working efficiency of the check valve.
Description
[technical field]
The utility model relates to the safety check technical field, the improved non-return mechanism of specifically a kind of safety check.
[background technique]
The effect of safety check is to prevent that the medium in the pipeline from flowing backwards, and open-shut device is opened voluntarily or closed by media flow and strength, drive motor is reversed and damages.Usually a large amount of water hammer accident is relevant with the safety check of pump discharge installing.Under the effect of the stream that falls to sluice, safety check cuts out rapidly, if safety check is because the influence of fault or bearing frictional resistance and inertia thereof, safety check might lag behind the time that begins to flow backwards, promptly increase to certain value in the refluence amount, even close rapidly in the moment of maximum refluence amount, then can produce very large pressure at the safety check place, facility is seriously executed and is damaged in the pipeline when the time comes.
[summary of the invention]
The purpose of this utility model is to overcome the deficiencies in the prior art, is with spring on valve rod, quickens the flap closing velocity, reduces water hammer and produces.
In order to achieve the above object, the utility model designs the improved non-return mechanism of a kind of safety check, comprise valve seat, valve gap, valve rod, flap, spring, leading truck, it is characterized in that: valve rod connects valve gap, flap, leading truck from top to bottom successively, the outer sheathed spring of valve rod between valve gap and the flap, the spring bottom is provided with the adjustment nut; Described flap is the hollow shell structure; Described leading truck bottom is an arc surface, the down vertical uniform a plurality of cylindrical leading arms of arc surface; Engagement edge between described flap and leading truck, the valve seat is provided with sealing gasket.
The utility model is compared with prior art, and the stroke that flap is closed is short, has only 1/4 of inside nominal diameter, has reduced the shut-in time of flap, has reduced the generation of water hammer, thereby has further ensured the working efficiency of safety check.
[description of drawings]
Fig. 1 is a structural representation of the present utility model.
Referring to Fig. 1,1 is valve seat; 2 is leading truck; 3 is sealing gasket; 4 is flap; 5 for adjusting nut; 6 is valve rod; 7 is valve gap; 8 is spring.
[embodiment]
Below in conjunction with accompanying drawing the utility model is described further.
Referring to Fig. 1, valve rod 6 connects valve gap 7, flap 4, leading truck 2 from top to bottom successively, valve rod 6 outer sheathed springs 8 between valve gap 7 and the flap 4, spring 8 bottoms are provided with adjusts nut 5, the tightness of adjustable springs, use spring can quicken the flap closing velocity, the stroke that flap is closed is short, has only 1/4 of inside nominal diameter; Thereby reduced the shut-in time of flap, reduced water hammer and produce.Flap 4 is the hollow shell structure, is in order to reduce the inertia of flap, to start rapidly when flap is closed, and has reduced the impact noise when closing.
Claims (4)
1. improved non-return mechanism of safety check, comprise valve seat, valve gap, valve rod, flap, spring, leading truck, it is characterized in that: valve rod (6) connects valve gap (7), flap (4), leading truck (2) from top to bottom successively, the outer sheathed spring (8) of valve rod (6) between valve gap (7) and the flap (4), spring (8) bottom are provided with adjusts nut (5).
2. the improved non-return mechanism of a kind of safety check as claimed in claim 1 is characterized in that: described flap (4) is the hollow shell structure.
3. the improved non-return mechanism of a kind of safety check as claimed in claim 1 is characterized in that: described leading truck (2) bottom is arc surface, the down vertical uniform a plurality of cylindrical leading arms of arc surface.
4. the improved non-return mechanism of a kind of safety check as claimed in claim 1 is characterized in that: the engagement edge between described flap (4) and leading truck (2), the valve seat (1) is provided with sealing gasket (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202098583U CN201547333U (en) | 2009-09-16 | 2009-09-16 | Check mechanism for improving check valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202098583U CN201547333U (en) | 2009-09-16 | 2009-09-16 | Check mechanism for improving check valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201547333U true CN201547333U (en) | 2010-08-11 |
Family
ID=42602506
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009202098583U Expired - Fee Related CN201547333U (en) | 2009-09-16 | 2009-09-16 | Check mechanism for improving check valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201547333U (en) |
-
2009
- 2009-09-16 CN CN2009202098583U patent/CN201547333U/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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100811 Termination date: 20170916 |