CN205841874U - A kind of water hammer-resistant check-valves - Google Patents
A kind of water hammer-resistant check-valves Download PDFInfo
- Publication number
- CN205841874U CN205841874U CN201620696116.8U CN201620696116U CN205841874U CN 205841874 U CN205841874 U CN 205841874U CN 201620696116 U CN201620696116 U CN 201620696116U CN 205841874 U CN205841874 U CN 205841874U
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- CN
- China
- Prior art keywords
- flap
- torque spring
- valve body
- rotary shaft
- valves
- 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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- Check Valves (AREA)
- Details Of Valves (AREA)
Abstract
This utility model provides a kind of water hammer-resistant check-valves, belongs to valve arrangement field, and including valve body, flap, main valve body is provided with water inlet and outlet, and flap is by the hinged inner chamber being installed between main valve body water inlet and outlet of rotary shaft；Flap has the first torque spring and the second torque spring away from the side of water inlet, first torque spring and the second torque spring are all arranged concentrically with rotary shaft, and all one end is arranged with valve flap contacts, the other end is fixed on locating shaft, locating shaft is fixed on valve body one end near outlet, the centrage of locating shaft and the centrage of rotary shaft are positioned on same vertical plane, first torque spring and the second torque spring are arranged relative to the center skew symmetry of valve body, and the center of rotary shaft is more than or equal to the 1/2 of flap radius with the wire length of the first torque spring with valve flap contacts point.This utility model can realize express close operation, prevents medium from flowing backwards, and reduces water hammer pressure.
Description
Technical field
This utility model belongs to control valve door equipment field, relates to a kind of water hammer-resistant check-valves.
Background technology
Check-valves is also known as reflux valve, non-return valve, counterbalance valve and check valve.These valves are the stream of tube road medium itself
The raw power of movable property opens and closes automatically, and its Main Function is to prevent medium from flowing backwards, prevent pump and drive motor reversion, with
And the releasing of vessel media.Check-valves can be additionally used in the aid system offer benefit that may be raised above system pressure to pressure therein
On the pipeline given.
Check-valves, according to the difference of material, goes on the pipeline of various medium, and check-valves is arranged on pipeline, i.e.
Becoming one of fluidic component of this complete pipeline, its flap opening-closing process will be by systemic transient flow regime institute shadow residing for it
Ring；In turn, the closing property of flap fluid flow state generation effect again.The work characteristics of check-valves is load change
Greatly, opening and closing frequency little, one puts into the state that turns off or on, and uses the cycle the longest, and does not require that moving component moves.But once
Having switching requirement, then must move flexible, this requirement mechanical movement more typically is the harshest.Owing to check-valves is at great majority
In actually used, qualitatively determine for quick closedown, and in the moment of closure of check ring, medium is opposite direction flowing, with
The closedown of flap, medium is rapidly decreased to zero from maximum refluence speed, and pressure raises the most rapidly, and i.e. producing may be to pipeline system
System has " water hammer " phenomenon of destruction.The high-pressure duct system used for multiple stage parallel connection of pumps, the problem of water hammer of check-valves is more
Add prominent.Water hammer is a kind of pressure wave in pressure pipeline in transient flow, and it is due to the change of rate of flow of fluid in pressure pipeline
The hydraulic blow phenomenon that the pressure liter changed and cause jumps or declines.Its physical cause produced is the Incoercibility of fluid, stream
The comprehensive function result that body motional inertia is elastic with pipeline.In order to prevent the water hammer hidden danger in pipeline, for many years, people are at non-return
In the design of valve, have employed some new constructions, new material, while ensureing check-valves applicable performance, by the impulsive force of water hammer
Being minimized, much the most conventional water hammer-resistant structure is to reduce the speed closed, but so can cause leaking of liquid, seals
Property reduce.
Utility model content
In view of this, this utility model is directed to a kind of on the premise of ensureing to seal, the non-return of waterproof hammer pressure
Valve.
For reaching above-mentioned purpose, the technical solution of the utility model is achieved in that a kind of water hammer-resistant check-valves, including
Valve body, flap, valve body is provided with water inlet and outlet, and described flap is installed in valve inleting water mouth by rotary shaft is hinged and goes out
In inner chamber between the mouth of a river；
Described flap has the first torque spring and the second torque spring, described first torsion away from the side of described water inlet
Spring and the second torque spring are all arranged concentrically with described rotary shaft, and all one end is arranged with described valve flap contacts, and the other end is solid
Being scheduled on locating shaft, described locating shaft is fixed on valve body one end near described outlet, the centrage of described locating shaft and institute
The centrage stating rotary shaft is positioned on same vertical plane, described first torque spring and the described second relative described valve of torque spring
The center skew symmetry of body is arranged, and the center of described rotary shaft and described first torque spring are big with the wire length of valve flap contacts point
In equal to the 1/2 of described flap radius.
Further, the area of section of described water inlet accounts for the ratio of described outlet area of section is 90%～93%.
Further, described water inlet is diminishing taper.
Further, being provided with closed type cushion pad between described valve body and described flap, described closed type cushion pad is located at
The middle part of described flap and surrounding.
Further, described flap is provided with the first gripper shoe and the second gripper shoe near described rotary shaft side, and described
One gripper shoe and described second gripper shoe are respectively provided at the two ends up and down of described flap both sides.
Further, described first torque spring is provided with the first kink near one end of described flap, and described first turns round
Power spring be provided with near one end of described flap the second kink, described first kink and described second kink all to away from
One end of described flap and described rotary shaft extends, the centrage of described first kink and described second kink and described valve
The angle of lobe is 15 degree～20 degree.
Compared with prior art, this utility model has the advantage that with good effect and is: this utility model increases by two torsions
Turn spring to be fixed on flap, flap open needs close during, under the elastic force effect of torque spring, make flap and
Time quickly close, effectively prevent the refluence of medium, effectively reduce water hammer pressure, after using torque spring, operation is more simultaneously
Safe and reliable, the capacity of resisting disturbance of flap action strengthens.
Accompanying drawing explanation
The accompanying drawing constituting a part of the present utility model is further appreciated by of the present utility model for providing, and this practicality is new
The schematic description and description of type is used for explaining this utility model, is not intended that improper restriction of the present utility model.?
In accompanying drawing:
Fig. 1 is the sectional view of this utility model a kind of water hammer-resistant check-valves top view；
Fig. 2 is the partial sectional view of this utility model a kind of water hammer-resistant check-valves rearview.
Description of reference numerals:
1-valve body；11-water inlet；12-outlet；2-flap；21-the first torque spring；211-the first kink；22-
Second torque spring；221-the second kink；23-the first gripper shoe；24-the second gripper shoe；4-locating shaft；5-rotary shaft.
Detailed description of the invention
It should be noted that in the case of not conflicting, the embodiment in this utility model and the feature in embodiment can
To be mutually combined.
In description of the present utility model, it is to be understood that term " " center ", " longitudinally ", " laterally ", " on ", D score,
The orientation of the instruction such as "front", "rear", "left", "right", " vertically ", " level ", " top ", " end ", " interior ", " outward " or position relationship
For based on orientation shown in the drawings or position relationship, it is for only for ease of description this utility model and simplifies description rather than refer to
Show or imply the device of indication or element must have specific orientation, with specific azimuth configuration and operation, therefore can not manage
Solve as to restriction of the present utility model.Additionally, term " first ", " second " etc. are only used for describing purpose, and it is not intended that refer to
Show or imply relative importance or the implicit quantity indicating indicated technical characteristic.Thus, " first ", " second " are defined
Deng feature can express or implicitly include one or more this feature.In description of the present utility model, unless
Being otherwise noted, " multiple " are meant that two or more.
In description of the present utility model, it should be noted that unless otherwise clearly defined and limited, term " peace
Dress ", should be interpreted broadly " being connected ", " connection ", for example, it may be fix connection, it is also possible to be to removably connect, or integratedly
Connect；Can be to be mechanically connected, it is also possible to be electrical connection；Can be to be joined directly together, it is also possible to be indirectly connected to by intermediary,
It can be the connection of two element internals.For the ordinary skill in the art, on can being understood by concrete condition
State term concrete meaning in this utility model.
Below in conjunction with the accompanying drawings specific embodiment of the utility model is elaborated.
As it is shown in figure 1, this utility model is a kind of water hammer-resistant check-valves, including valve body 1, flap 2, valve body 1 be provided with into
The mouth of a river 11 and outlet 12, flap 2 is by the hinged inner chamber being installed between valve body 1 water inlet 11 and outlet 12 of rotary shaft 5
In；Flap 2 has the first torque spring 21 and the second torque spring 22, the first torque spring 21 and away from the side of water inlet 11
Two torque springs 22 are all arranged concentrically with rotary shaft 5, and all one end contact setting with flap 2, and the other end is fixed on locating shaft 4
On, locating shaft 4 is fixed on valve body 1 one end near outlet 12, and the centrage of locating shaft 4 is positioned at the centrage of rotary shaft 5
On same vertical plane, the first torque spring 21 is arranged with the center skew symmetry of the second relative valve body of torque spring 22 1, rotary shaft 5
The wire length of center and the first torque spring 21 and flap 2 contact point more than or equal to the 1/2 of flap 2 radius, use this position
Put stress more preferable, increase rotary arm, the timely closedown of favourable flap 2.
Preferably, it is 90%～93% that the area of section of water inlet 11 accounts for the ratio of outlet 12 area of section, utilize into
The mouth of a river 11 and the drop of outlet 12, reduce water flow pressure, can reduce water hammer pressure to a certain extent；It is highly preferred that water inlet
11 is diminishing taper, it is possible to increase the pressure that medium flows into, opening in time of favourable flap 2.
Preferably, being provided with closed type cushion pad 3 between valve body 1 and flap 2, closed type cushion pad 3 is located at the middle part of flap 2
And surrounding, it is ensured that while flap 2 is closed the most in time, it is to avoid flap 2 and valve body 1 produce powerful impact, produce vibration,
The stability of lift structure.
Preferably, flap 2 is provided with the first gripper shoe 23 and the second gripper shoe 24, the first gripper shoe near rotary shaft 5 side
23 and second gripper shoe 24 be respectively provided at the two ends up and down of flap 2 both sides, intensity and the rigidity of flap 2 can be increased.
Preferably, the first torque spring 21 is provided with the first kink 211, the first torque spring 21 near one end of flap 2
Being provided with the second kink 221 near one end of flap 2, the first kink 211 and the second kink 221 are all to away from flap 2 He
One end of rotary shaft 5 extends, and the first kink 211 and the centrage of the second kink 221 are 15 with the angle of described flap 2
Spend～20 degree, promote the first torque spring 21 and intensity of the second torque spring 22, favorably flap 2 is exerted a force, it is ensured that valve
The timely closedown of lobe 2.
During actual use, inlet channel enters at water inlet 11, after pressure reaches certain numerical value, and flap
2 open, and the first torque spring 21 and the second torque spring 22 rotate stress, and when pressure minimizing needs to close when, flap 2 exists
Reset rapidly under the effect of the first torque spring 21 and the second torque spring 22, effectively prevent medium from flowing backwards, reduce water hammer pressure,
Not only ensure that closed type but also reduce water hammer pressure, effective, wherein the first gripper shoe 23 and the second gripper shoe 24 can rise and prop up
The effect of support flap 2, promotes the intensity of flap 2, and then promotes the stability of total.
Above an embodiment of the present utility model is described in detail, but described content has been only this utility model
Preferred embodiment, it is impossible to be considered for limiting practical range of the present utility model.All according to this utility model application range institute
Impartial change and the improvement etc. made, within all should still belonging to patent covering scope of the present utility model.
Claims (6)
1. a water hammer-resistant check-valves, it is characterised in that: including valve body (1), flap (2), valve body (1) is provided with water inlet (11)
With outlet (12), described flap (2) is installed in valve body (1) water inlet (11) and outlet (12) by rotary shaft (5) is hinged
Between inner chamber in；
Described flap (2) has the first torque spring (21) and the second torque spring (22) away from the side of described water inlet (11),
Described first torque spring (21) and the second torque spring (22) are all arranged concentrically with described rotary shaft (5), and all one end and institutes
Stating flap (2) contact to arrange, the other end is fixed on locating shaft (4), and described locating shaft (4) is fixed on valve body (1) near described
One end of outlet (12), the centrage of described locating shaft (4) is positioned at same vertical plane with the centrage of described rotary shaft (5)
On, described first torque spring (21) is arranged with the center skew symmetry of the described relative described valve body of second torque spring (22) (1),
The center of described rotary shaft (5) is more than or equal to institute with the wire length of described first torque spring (21) with flap (2) contact point
State the 1/2 of flap (2) radius.
A kind of water hammer-resistant check-valves the most according to claim 1, it is characterised in that: the area of section of described water inlet (11)
The ratio accounting for described outlet (12) area of section is 90%～93%.
A kind of water hammer-resistant check-valves the most according to claim 1, it is characterised in that: described water inlet (11) is for being gradually reduced
Taper.
A kind of water hammer-resistant check-valves the most according to claim 1, it is characterised in that: described valve body (1) and described flap (2)
Between be provided with closed type cushion pad (3), described closed type cushion pad (3) is located at middle part and the surrounding of described flap (2).
5. according to a kind of water hammer-resistant check-valves described in any one of Claims 1 to 4, it is characterised in that: described flap (2) is close
Described rotary shaft (5) side is provided with the first gripper shoe (23) and the second gripper shoe (24), described first gripper shoe (23) and described
Second gripper shoe (24) is respectively provided at the two ends up and down of described flap (2) both sides.
6. according to a kind of water hammer-resistant check-valves described in any one of Claims 1 to 4, it is characterised in that: described first torsion bullet
Spring (21) is provided with the first kink (211) near one end of described flap (2), and described first torque spring (21) is near described valve
One end of lobe (2) is provided with the second kink (221), and described first kink (211) and described second kink (221) are all to far
Extend from one end of described flap (2) and described rotary shaft (5), described first kink (211) and described second kink
(221) centrage is 15 degree～20 degree with the angle of described flap (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620696116.8U CN205841874U (en) | 2016-07-01 | 2016-07-01 | A kind of water hammer-resistant check-valves |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620696116.8U CN205841874U (en) | 2016-07-01 | 2016-07-01 | A kind of water hammer-resistant check-valves |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205841874U true CN205841874U (en) | 2016-12-28 |
Family
ID=58149956
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620696116.8U Expired - Fee Related CN205841874U (en) | 2016-07-01 | 2016-07-01 | A kind of water hammer-resistant check-valves |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205841874U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109099194A (en) * | 2018-09-26 | 2018-12-28 | 内蒙古第机械集团股份有限公司 | A kind of check valve |
-
2016
- 2016-07-01 CN CN201620696116.8U patent/CN205841874U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109099194A (en) * | 2018-09-26 | 2018-12-28 | 内蒙古第机械集团股份有限公司 | A kind of check valve |
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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: 20161228 Termination date: 20200701 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |