CN209414696U - A kind of swing check valve - Google Patents
A kind of swing check valve Download PDFInfo
- Publication number
- CN209414696U CN209414696U CN201822211245.5U CN201822211245U CN209414696U CN 209414696 U CN209414696 U CN 209414696U CN 201822211245 U CN201822211245 U CN 201822211245U CN 209414696 U CN209414696 U CN 209414696U
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- valve
- swing check
- valve plate
- check valve
- plate
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Abstract
The utility model discloses a kind of swing check valves, and including valve body, valve seat, the valve plate for being rotatably arranged on the valve inner and the damping unit for being set to the valve inner, the valve seat tilts an angle towards the direction for reducing the valve plate stroke.Valve seat inclination reduces valve plate operation angle, thus valve closing velocity is fast, and pipeline reflux is few, and valve plate impact valve seat degree is small, and internally-damped device can effectively reduce water hammer, the sound of no shock.
Description
Technical field
The utility model relates to valve technology fields, and in particular to a kind of swing check valve.
Background technique
Swing check valve is also known as check valve or non-return valve, and effect is to prevent the medium in pipeline from flowing backwards.Swing type stops
It returns valve to include valve body, be rotatably arranged on the intracorporal valve plate of valve by pin shaft, valve plate is connected by rocker arm with pin shaft.When fluid by
The import of swing check valve is toward output flow, and the pressure of the inlet side of swing check valve is greater than the pressure of outlet side, then valve
Plate is up flipped open around pin shaft, at this time valve opening；When the pressure of the inlet side of swing check valve is less than the pressure of outlet side
Power, then valve plate overturns closing around axis down, and valve is closed at this time.When closure of check ring, water hammer pressure can be generated in pipeline, sternly
The damage that will lead to valve, pipeline or equipment when weight should cause to pay high attention to especially for big mouth pipeline or pressure duct.
Current swing check valve is when valve plate downwardly turns over closing around pin shaft, since to downwardly turn over speed fast for valve plate,
Water hammer pressure can be generated, meanwhile, valve plate and valve seat can issue the sound due to shock, and that shortens swing check valve uses the longevity
Life.
Summary of the invention
The technical problem to be solved by the present invention is to provide a kind of swing check valves, can not only effectively reduce water
It hammers pressure into shape, prevents valve plate and valve seat from hitting, extend the service life of valve, and be additionally provided the advantage of energy conservation.
The technology employed by the present utility model is
A kind of swing check valve including valve body, valve seat, the valve plate for being rotatably arranged on the valve inner and is set to
The damping unit of the valve inner, the valve seat tilt an angle towards the direction for reducing the valve plate stroke.
As improvement to above-mentioned technical proposal, the valve plate has the table of streamlined protrusion backwards to the side of water inlet
Face, even if valve plate can also fully open under lesser flow velocity, and is not fully opened due to this design under same uniform flow
Valve compare, resistance is smaller.This feature can be such that energy loss significantly reduces, and can save water resource for entire water factory.It is this
It designing similar with aircraft wing principle, can generate differential water pressures between the upstream and downstream of valve plate convex surface, it is upward that this differential water pressures will push valve plate,
Normally open position is in help valve plate to open and be able to maintain valve plate.On convex surface top, " vacuum " can be generated, to make valve
Plate is upward, in convex lower, bigger pressure is generated, so that valve plate be pushed to upwardly open.
Preferably, the valve seat towards the valve plate end face and water flow by inlet side to outlet side flow direction at
111 ° of angles.
As improvement to above-mentioned technical proposal, the valve plate includes the first end pivoted and with the pivotal point of first end is
The second end of center of circle rotation.
Preferably, the first end of the valve plate is fixed on the valve inner by pin shaft.
As improvement to above-mentioned technical proposal, the damping unit includes being fixedly installed in the valve plate second end
Impact bolt and the buffing pad being fixedly installed on the interior impact bolt movement path of valve body.
Preferably, the buffing pad is a hydraulic mechanism, stretches out one for the piston with impact threaded bolt contacts.
As improvement to above-mentioned technical proposal, the surfaces externally and internally of the swing check valve is coated with epoxy resin layer.
The beneficial effects of the utility model are: valve seat tilts, valve plate operation angle reduces compared to general check valve, thus
Valve closing velocity is fast, and pipeline reflux is few, and it is small that valve plate impacts valve seat degree；Water velocity needed for valve swings and opens is small,
Head loss is small, and pump-out is small, reaches energy-efficient effect；Due to squint seat design, without additional valve shaft axle sleeve and external thick stick
Bar, weight assist to close, and generate frictional resistance there is no need to additional seal circle, endanger valve without having to worry about external module；It is interior
Portion's damping unit can effectively reduce water hammer, when valve closes about also surplus 10-15%, damping unit starting, valve plate slowly to
Valve seat is mobile, and water hammer reduces, the bang sound of no shock.
Detailed description of the invention
Fig. 1 is the side sectional view of one embodiment according to the present utility model；
Fig. 2 is the cross-sectional view of the A-A along Fig. 1.
Specific embodiment
The utility model is described in further detail in the following with reference to the drawings and specific embodiments, so that those skilled in the art
The utility model may be better understood and can be practiced, but illustrated embodiment is not as the restriction to the utility model.
Shown in referring to Fig.1, for according to a kind of one embodiment of swing check valve of the utility model, including valve body 1,
Valve seat 2, the valve plate 3 being rotatably arranged on inside the valve body 1 and the damping unit 4 being set to inside the valve body 1, the valve
Seat 2 is towards the direction of reduction 3 stroke of valve plate relative to 21 ° of angles inclined vertically.The valve plate 3 is backwards to the one of water inlet
Side has the surface of streamlined protrusion, due to this design, even if valve plate 3 can also fully open under lesser flow velocity, with
Compared with valve not completely open under uniform flow, resistance is smaller, this feature can be such that energy loss significantly reduces, and can be entire
Water factory saves water resource.This design is similar with aircraft wing principle, can generate differential water pressures between 3 convex surface upstream and downstream of valve plate, this
Differential water pressures will push valve plate 3 upwards, opens to facilitate valve plate 3 and is able to maintain valve plate 3 and is in normally open position.On convex surface
Top can generate " vacuum ", to make valve plate 3 upwards, in convex lower, bigger pressure be generated, so that valve plate 3 be pushed to open upwards
It opens.The first end of the valve plate 3 is pivotably secured to inside the valve body 1 by pin shaft, and the second end of the valve plate 3 is with described
Pin shaft is center of circle rotation, and the second end end is provided with an impact bolt 41, the fortune of the impact bolt 41 in valve body 1
A buffing pad 4 is provided on dynamic path, the buffing pad 4 is a hydraulic mechanism, stretches out one and is used for and impact threaded bolt contacts
Piston 42.
In another preferred embodiment, the surfaces externally and internally of the swing check valve is coated with epoxy resin layer.
Embodiment described above is only preferred embodiments for fully illustrating the utility model, the utility model
Protection scope it is without being limited thereto.Those skilled in the art made equivalent substitute or change on the basis of the utility model
It changes, both is within the protection scope of the present invention.The protection scope of the utility model is subject to claims.
Claims (8)
1. a kind of swing check valve, it is characterised in that: including valve body, valve seat, the valve plate for being rotatably arranged on the valve inner
And it is set to the damping unit of the valve inner, the valve seat tilts one jiao towards the direction for reducing the valve plate stroke
Degree.
2. a kind of swing check valve according to claim 1, it is characterised in that: the valve plate is backwards to the side of water inlet
Surface with streamlined protrusion.
3. a kind of swing check valve according to claim 1, it is characterised in that: the valve seat is towards the end of the valve plate
Face and water flow are by the flow direction of inlet side to outlet side at 111 ° of angles.
4. a kind of swing check valve according to claim 1, it is characterised in that: the valve plate includes the first end pivoted
With the second end rotated using the pivotal point of first end as the center of circle.
5. a kind of swing check valve according to claim 4, it is characterised in that: the first end of the valve plate passes through pin shaft
It is fixed on the valve inner.
6. a kind of swing check valve according to claim 4, it is characterised in that: the damping unit includes fixed setting
In the impact bolt in the valve plate second end and it is fixedly installed on the buffing pad impacted on bolt movement path in valve body.
7. a kind of swing check valve according to claim 6, it is characterised in that: the buffing pad is a hydraulic mechanism,
It stretches out one for the piston with impact threaded bolt contacts.
8. a kind of swing check valve according to claim 1, it is characterised in that: the interior appearance of the swing check valve
Face is coated with epoxy resin layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822211245.5U CN209414696U (en) | 2018-12-27 | 2018-12-27 | A kind of swing check valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822211245.5U CN209414696U (en) | 2018-12-27 | 2018-12-27 | A kind of swing check valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209414696U true CN209414696U (en) | 2019-09-20 |
Family
ID=67940733
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201822211245.5U Active CN209414696U (en) | 2018-12-27 | 2018-12-27 | A kind of swing check valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209414696U (en) |
-
2018
- 2018-12-27 CN CN201822211245.5U patent/CN209414696U/en active Active
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| GR01 | Patent grant | ||
| GR01 | Patent grant |