CN105351573B - Self sealss swing type soft-sealing check valve - Google Patents
Self sealss swing type soft-sealing check valve Download PDFInfo
- Publication number
- CN105351573B CN105351573B CN201510773646.8A CN201510773646A CN105351573B CN 105351573 B CN105351573 B CN 105351573B CN 201510773646 A CN201510773646 A CN 201510773646A CN 105351573 B CN105351573 B CN 105351573B
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- valve
- valve plate
- counterbore
- self sealss
- swing type
- Prior art date
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- 241000283216 Phocidae Species 0.000 title claims abstract description 80
- 238000007789 sealing Methods 0.000 title claims abstract description 73
- 230000007704 transition Effects 0.000 claims abstract description 15
- 239000012530 fluid Substances 0.000 claims abstract description 13
- 230000000694 effects Effects 0.000 claims abstract description 12
- 230000002093 peripheral effect Effects 0.000 claims abstract description 8
- 230000000903 blocking effect Effects 0.000 claims abstract description 5
- 238000013016 damping Methods 0.000 claims description 18
- 230000009471 action Effects 0.000 claims description 8
- 238000000034 method Methods 0.000 claims description 6
- 230000008569 process Effects 0.000 claims description 6
- 239000004809 Teflon Substances 0.000 claims description 2
- 229920006362 Teflon® Polymers 0.000 claims description 2
- 238000010030 laminating Methods 0.000 claims description 2
- 239000004589 rubber sealant Substances 0.000 claims description 2
- 230000008901 benefit Effects 0.000 description 4
- 230000006872 improvement Effects 0.000 description 4
- 239000007788 liquid Substances 0.000 description 4
- 230000035939 shock Effects 0.000 description 4
- 239000000565 sealant Substances 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 2
- 239000004810 polytetrafluoroethylene Substances 0.000 description 2
- 230000004888 barrier function Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000005489 elastic deformation Effects 0.000 description 1
- 239000013536 elastomeric material Substances 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- -1 polytetrafluoroethylene Polymers 0.000 description 1
- 230000007306 turnover Effects 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K15/00—Check valves
- F16K15/02—Check valves with guided rigid valve members
- F16K15/03—Check valves with guided rigid valve members with a hinged closure member or with a pivoted closure member
- F16K15/033—Check valves with guided rigid valve members with a hinged closure member or with a pivoted closure member spring-loaded
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
- F16K1/32—Details
- F16K1/34—Cutting-off parts, e.g. valve members, seats
- F16K1/36—Valve members
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K15/00—Check valves
- F16K15/18—Check valves with actuating mechanism; Combined check valves and actuated valves
- F16K15/182—Check valves with actuating mechanism; Combined check valves and actuated valves with actuating mechanism
- F16K15/1821—Check valves with actuating mechanism; Combined check valves and actuated valves with actuating mechanism for check valves with a hinged or pivoted closure member
Abstract
The invention discloses a kind of self sealss swing type soft-sealing check valve, it is provided with interconnected admission chamber including valve body, in valve body and goes out in sap cavity, valve body to be hinged with rocking bar, being connected with rocking bar by admission chamber and can go out the valve plate of sap cavity blocking, be coated with elastic sealing layer on the outer surface of valve plate；It for the connecting end surface that is connected with rocking bar, other end is seal face that the end face of valve plate, which is,；The cavity wall inner face of the admission chamber is provided with counterbore so that forming transition shoulder between admission chamber and counterbore；Elastic sealing layer on the valve plate seal face can form the axial seal pair for realizing axial seal after being engaged with transition shoulder；The hole wall of elastic sealing layer and counterbore on the valve plate outer peripheral face can form the radial seal pair for realizing radial seal after being engaged.The check valve structure is simple, with axial seal and radial seal double effectses, even if being not easy to cause seepage or leakage when Fluid pressure is relatively low.
Description
Technical field
The present invention relates to a kind of self sealss swing type soft-sealing check valve.
Background technology
At present, known swing type soft-sealing check valve includes being provided with interconnected admission chamber in valve body, valve body and going out
It is hinged with sap cavity, valve body and is connected with rocking bar, rocking bar and by admission chamber and the valve plate of sap cavity blocking can be gone out, on the outer surface of valve plate
It is coated with elastic sealing layer；It for the connecting end surface that is connected with rocking bar, other end is seal face that the end face of valve plate, which is,.It is close
Envelope principle is that bearing pin of the valve plate in valve body is rotated, and the seal face of valve plate blocks the inner port of admission chamber, by Fluid pressure
Conducting oneself with dignity with valve plate makes the elastic sealing layer compressive deformation on seal face to realize sealing i.e. blocking admission chamber and go out sap cavity.On
The check-valves of structure is stated, when weak point is that Fluid pressure is relatively low, the elastic sealing layer compressive deformation of seal face is smaller, Yi Zao
Into valve seepage or leakage.
The content of the invention
The technical problem to be solved in the present invention is that there is provided a kind of self sealss swing type of good sealing effect for drawbacks described above
Soft-sealing check valve.
In order to solve the above technical problems, the invention provides a kind of self sealss swing type soft seal non-return of following structure
The admission chamber being interconnected is provided with valve, including valve body, valve body and goes out on sap cavity, valve body to be hinged with valve shaft, valve shaft and is connected with
Being connected with rocking bar, rocking bar by admission chamber and can go out the valve plate of sap cavity blocking, be coated with elastic sealing layer on the outer surface of valve plate；
It for the connecting end surface that is connected with rocking bar, other end is seal face that the end face of valve plate, which is,；Its design feature is：It is described
The cavity wall inner face of admission chamber is provided with the counterbore connected with admission chamber, and transition bench is formed between the admission chamber and the counterbore
Rank；Elastic sealing layer on the valve plate seal face can form the axial direction for realizing axial seal after being engaged with transition shoulder
Sealing pair；The hole wall of elastic sealing layer and counterbore on the valve plate outer peripheral face can be formed with radial direction self sealss after being engaged
The radial seal pair of effect.
Sealing land is formed after the axial evagination of the elastic sealing layer at the valve plate seal face outer rim position, the axial direction is close
Envelope is secondary to be formed by described seal after land is engaged with transition shoulder.
Axially protruded out again after elastic sealing layer footpath convex on the valve plate outer peripheral face so as to form hole that can be with counterbore
Wall laminating ring lip, the radial seal pair by the lateral surface of the ring lip and the hole wall of counterbore be engaged after formed.
The contour line of the medial surface of the ring lip is obliquely installed relative to the axis of the valve plate, so that the ring lip
Medial surface is circular conical surface.
The contour line of the lateral surface of the ring lip is obliquely installed for the axis of the valve plate, so that the ring lip is outer
Side is circular conical surface.
The counterbore is the conical bore become larger outward from its inner.
The counterbore is the conical bore become larger outward from its inner.
The spring of damping action can be played by being set with the valve shaft in valve plate opening process.
Lever is housed on the valve shaft, damping oil cylinder or damping cylinder is hinged with the valve body, the damping oil cylinder or
The piston rod of damping cylinder is hinged with the lever.
It is equipped with the valve shaft on lever, lever and balancing weight is housed.
The elastic sealing layer is rubber sealant or teflon seal layer.
The counterbore and admission chamber are arranged concentrically.
Cushion pad is housed on the rocking bar.
After elastic sealing layer on the seal face of valve plate is engaged with transition shoulder, elastic sealing layer and transition shoulder
The two can form axial seal pair, so as to realize axial seal；Both hole walls of elastic sealing layer and counterbore can form radially close
Envelope is secondary, so as to realize radial seal.The lateral surface of the ring lip is set into circular conical surface can bring following benefit：One is lateral surface
Tighter with credit union with the hole wall of counterbore, its sealing effectiveness is more preferable；Two be that valve is easy to ring lip to enter counterbore when closing；Three
It is easy to ring lip to leave counterbore when being valve opening to reduce unlatching resistance.The medial surface of the ring lip is set into circular conical surface can band
Carry out following benefit：Fluid pressure can produce radial component after acting on medial surface, and the radial component can make the lateral surface of ring lip
That is fitted with the hole wall of counterbore is more tight, forms self sealss.That is the present invention both can be by the seal face of valve plate
Elastic sealing layer realize axial seal, also radial direction self sealss can be realized by the elastic sealing layer on valve plate outer peripheral face.Even if
The elastic sealing layer compressive deformation of seal face is smaller when Fluid pressure is relatively low, and axial seal pair effect is poor, but is due to have
The secondary presence of the radial seal of self sealss effect, will not also easily cause valve seepage or leakage.
In summary, the advantage of the invention is that：It is simple in construction, with axial seal and radial seal double effectses, i.e.,
Make to be not easy to cause seepage or leakage when Fluid pressure is relatively low.
Brief description of the drawings
The embodiment to the present invention is described in further detail below in conjunction with the accompanying drawings：
Fig. 1 is the structural representation of the unimpeded state of the check-valves of the first structure；
Fig. 2 is the structural representation of the cut-off state of check-valves shown in Fig. 1；
Fig. 3 is the enlarged drawing in A portions in Fig. 2；
Fig. 4 is the structural representation of the cut-off state of the check-valves of the second structure；
Fig. 5 is the structural representation of the cut-off state of the check-valves of the 3rd structure；
Fig. 6 is the structural representation of the cut-off state of the check-valves of the 4th structure；
Fig. 7 is the structural representation of the cut-off state of the check-valves of the 5th structure.
Embodiment
The self sealss swing type soft-sealing check valve of the first structure as depicted in figs. 1 and 2, including valve body 1, in valve body 1
Provided with interconnected admission chamber 2 and go out sap cavity 3, the external port of admission chamber 2 is inlet, and the external port for going out sap cavity 3 is liquid
Mouthful.It is hinged with valve body 1 on valve shaft 12, valve shaft 12 and is connected with rocking bar 4, is connected with rocking bar 4 on valve plate 5, the outer surface of valve plate 5
Elastic sealing layer 6 is coated with, elastic sealing layer 6 is the sealant or other that sealant, the polytetrafluoroethylene (PTFE) that rubber is made are made
The elastic sealing layer that material is made.The end face of valve plate 5 be for be connected with rocking bar 4 connecting end surface, other end is can be with
The seal face that the inner port of admission chamber 2 is engaged.The upset of valve plate 5 can be achieved admission chamber 2 and go out connecting or resistance for sap cavity 3
It is disconnected.The cavity wall inner face of the admission chamber 2 is provided with the counterbore 7 that is arranged concentrically with admission chamber 2, counterbore 7 with admission chamber 2 is concentric sets
The processing technology of counterbore 7 and admission chamber 2 can be simplified by putting, and transition shoulder 8 is formed between counterbore 7 and admission chamber 2.
As shown in Fig. 2 the elastic sealing layer 6 on the seal face of valve plate 5 can be formed after being engaged with transition shoulder 8
Axial seal pair 13；The hole wall of elastic sealing layer 6 and counterbore 7 on the outer peripheral face of valve plate 5 can be formed radially after being engaged
Sealing pair 14.Axially protruded out again after the footpath convex of elastic sealing layer 6 on reference picture 1, Fig. 2 and Fig. 3, the outer peripheral face of valve plate 5,
So as to form ring lip 9；The contour line of the lateral surface of the ring lip 9 is obliquely installed relative to the axis of valve plate 5, i.e., ring lip 9 is outer
The axis of the contour line of side and the valve plate 5 into set angle angle so that the lateral surface 15 of the ring lip 9 is circular cone
Face；Above-mentioned radial seal pair 14 be by the lateral surface 15 of ring lip 9 and the hole wall of counterbore 7 be engaged after formed.By the ring
The lateral surface 15 of lip 9, which is set to circular conical surface, can bring following effect：One is that lateral surface 15 and the hole wall of counterbore 7 are tighter with credit union
Close, its sealing effectiveness is more preferable；Two be that valve is easy to ring lip 9 to enter counterbore when closing；Three are easy to ring lip 9 to leave when being valve opening
Counterbore is to reduce unlatching resistance.And the counterbore 7 is set to from its inner conical bore become larger outward, i.e. counterbore 7 is leaned on
The one end for closely going out big, the close transition shoulder 8 in one end of sap cavity 3 is small, can not only match somebody with somebody further the hole wall of lateral surface 15 and counterbore 7
Close tight, and more conducively valve opening when ring lip 9 leave counterbore 7, resistance is opened with further reduce.Reference picture 1, Fig. 2 and
Fig. 3, the contour line of the medial surface 11 of the ring lip 9 is obliquely installed relative to the axis of the valve plate 5, i.e. the medial surface of ring lip 9
The axis of 11 contour line and the valve plate into set angle angle so that the medial surface 11 of the ring lip is circular conical surface；
The medial surface 11 of the ring lip 9 is set into circular conical surface can bring following benefit：After valve is closed, Fluid pressure acts on inner side
Radial component can be produced after on face 11, it is tighter that the radial component can make that the lateral surface 15 of ring lip and the hole wall of counterbore 7 fit
It is close, form self sealss.The contour line of the medial surface 11 and lateral surface 15 relative to the valve plate axis angle of inclination and
Depending on the angle of inclination of axial line of the contour line relative to counterbore 7 of the counterbore 7 can be according to design requirement.With continued reference to figure
1st, Fig. 2 and Fig. 3, axial seal pair 13 can be contacted by the elastic sealing layer 6 on the seal face of valve plate 5 with transition shoulder 8
Formed after cooperation；Axial seal pair 13 can also be formed as follows, i.e., the elasticity at the described seal face outer rim position of valve plate 5
Sealing land 23 is formed after the evagination of sealant axial direction, the axial seal pair 13 is connect by the sealing land 23 with transition shoulder 8
Touch and formed after coordinating.
Referring to Figures 1 and 2, equipped with the cushion pad 10 that can be contacted with the inwall of valve body 1 on the rocking bar 4, cushion pad 10 uses rubber
Glue elastomeric material is made.When check-valves is opened, valve plate 5 promotes rocking bar rapidly to overturn, and rocking bar 4 can cause urgency to the inwall of valve body
Speed is hit；From momentum theorem, the action time more long then impact of shock is smaller.And the setting of cushion pad 10 can be effective
Slow down shock, i.e. cushion pad 10 and extend the action time of shock, always reduce impact, the life-span of valve body can be extended.
The check-valves of the structure can be attached by the flange 16 at the two ends of valve body 1 with pipeline.
The self sealss swing type soft-sealing check valve of second of structure is as shown in figure 4, the check-valves of the structure is first
The improvement made on the basis of the self sealss swing type soft-sealing check valve for planting structure, the self sealss of its structure and the first structure
The structure of swing type soft-sealing check valve is essentially identical, and difference is at following 2 points：One is the connected mode difference of pipeline,
The flange at the outer wall two ends of valve body 1 of the self sealss swing type soft-sealing check valve of the first structure is removed and then groove is changed into
Interface 17；The self sealss swing type soft-sealing check valve of second of structure is realized with pipeline by groove interface 17 and is connected；Two are
The spring 18 of damping action can be played by being set with valve shaft 12 in the opening process of valve plate 5, and spring 18 uses torsion spring, 18 sets of spring
Fill on valve shaft 12, the one end of spring 18 is connected with valve body 1, and the other end of spring 18 is connected with rocking bar 4；Opened on valve plate 5 during opening,
Spring 18 can play damping action, can prevent valve plate 5 from rapidly overturning and causing rapid shock to the inwall of valve body；Being turned under valve plate 5 makes
When valve is in cut-off state, spring 18 can apply pressure to valve plate 5, thereby may be ensured that acquisition better seal effect.
The self sealss swing type soft-sealing check valve of the third structure be the first structure self sealss swing type it is soft close
The improvement made on the basis of envelope check-valves, its internal structure（Referring to Figures 1 and 2）With the self sealss swing type of the first structure
The internal structure of soft-sealing check valve is identical.Its difference is to set outside its external structure, reference picture 5, i.e. valve body 1
Have and balancing weight 20 is housed on the lever 19 on valve shaft 12, lever 19, balancing weight 20 can be slided and changed along lever 19
Position, balancing weight 20 realizes the locking with lever 19 by the lock-screw 24 being screwed onto thereon.Lever 19 and balancing weight 20
Effect be to set VOP, that is, the pressure of the fluid flowed into valve can open valve when reaching setting pressure
Open, it is on the contrary then can not open.Opened by changing balancing weight 20 or changing position of the balancing weight 20 on lever 19 and can change valve
The setting pressure opened.
The self sealss swing type soft-sealing check valve of 4th kind of structure be the first structure self sealss swing type it is soft close
The improvement made on the basis of envelope check-valves, its internal structure（Referring to Figures 1 and 2）With the self sealss swing type of the first structure
The internal structure of soft-sealing check valve is identical.Its difference is to set outside its external structure, reference picture 6, i.e. valve body 1
Have and damping oil cylinder 21 is hinged with the lever 19 on valve shaft 12, valve body 1, the piston rod of damping oil cylinder 21 and the lever 19
It is hinged；Certain damping oil cylinder 21 can also be substituted with damping cylinder.The effect of damping oil cylinder 21 or damping cylinder is that valve can be set
Door Opening pressure, that is, the pressure of the fluid flowed into valve can make valve opening when reaching setting pressure, on the contrary then can not open.
The self sealss swing type soft-sealing check valve of 5th kind of structure is as shown in fig. 7, the check-valves of the structure is first
The improvement made on the basis of the self sealss swing type soft-sealing check valve for planting structure, the self sealss of its structure and the first structure
The structure of swing type soft-sealing check valve is essentially identical, difference be it is different from the connected mode of pipeline, i.e., by the first
The flange at the outer wall two ends of valve body 1 of the self sealss swing type soft-sealing check valve of structure remove after again at the inwall two ends of valve body 1
Process bell socket 22；The self sealss swing type soft-sealing check valve of 5th kind of structure is realized by bell socket 22 and pipeline
Connection.
Only illustrated below by taking the self sealss swing type soft-sealing check valve of the first structure as an example its action process and
Sealing principle, the action process and sealing principle of remaining several self sealss swing type soft-sealing check valve is equivalent therewith, not further
One repeats.Referring to Figures 1 and 2, in the closed mode shown in Fig. 2, liquid after check-valves is attached by flange 16 and pipeline
Body flows into admission chamber 2, in the presence of fluid pressure, and being turned on valve plate 5 makes check-valves be in the conducting state shown in Fig. 1, liquid
Just enter sap cavity 3, make whole liquid feeding pipeline unimpeded；If now barrier or other reasons stop feed flow for some reason, valve plate 5 is in deadweight
In the presence of downwardly turn over, after the sealing land 23 on the seal face of valve plate 5 is contacted with transition shoulder 8, conduct oneself with dignity and go out in valve plate 5
Occurs elastic deformation under the collective effect of fluid pressure in sap cavity 3, so as to realize axial seal；And ring lip 9 connects with the hole wall of counterbore 7
After touch, because the contour line of the medial surface 11 of ring lip 9 is obliquely installed relative to the axis of the valve plate 5, the medial surface of ring lip 9 is made
For circular conical surface, radial component can be produced by going out after the fluid pressure in sap cavity 3 is acted on the medial surface of ring lip 9, the radial component
The lateral surface of ring lip 9 can be made tightly to be fitted with the hole wall of counterbore 7, so as to realize radial direction self sealss.
Claims (8)
1. a kind of self sealss swing type soft-sealing check valve, including valve body（1）, valve body（1）It is interior to be provided with interconnected admission chamber
（2）With go out sap cavity（3）, valve body（1）On be hinged with valve shaft, valve shaft and be connected with rocking bar（4）, rocking bar（4）On be connected with and will can enter
Sap cavity（2）With go out sap cavity（3）The valve plate of blocking（5）, valve plate（5）Outer surface on be coated with elastic sealing layer（6）；Valve plate（5）
End face to be used for and rocking bar（4）The connecting end surface of connection, other end are seal face；It is characterized in that：The feed liquor
Chamber（2）Cavity wall inner face be provided with the counterbore that is connected with admission chamber（7）, the admission chamber（2）With the counterbore（7）Between shape
Into transition shoulder（8）；The valve plate（5）Elastic sealing layer on seal face（6）With transition shoulder（8）Can shape after being engaged
Into the axial seal pair for realizing axial seal；The valve plate（5）Elastic sealing layer on outer peripheral face（6）With counterbore（7）Hole wall
The radial seal pair with radial direction self sealss effect can be formed after being engaged；
The valve plate（5）Elastic sealing layer on outer peripheral face（6）Axially protruded out so as to which formed can be with counterbore again after the convex of footpath（7）
Hole wall laminating ring lip（9）, the radial seal pair is by the ring lip（9）Lateral surface and counterbore（7）Hole wall contact match somebody with somebody
Formed after conjunction；
The ring lip（9）Medial surface contour line relative to the valve plate（5）Axis be obliquely installed so that the ring lip
（9）Medial surface be circular conical surface, valve close after, Fluid pressure can produce radial component after acting on the medial surface；
The ring lip（9）Lateral surface contour line for the valve plate（5）Axis be obliquely installed so that the ring lip
（9）Lateral surface be circular conical surface.
2. self sealss swing type soft-sealing check valve according to claim 1, it is characterised in that：The counterbore（7）For certainly
The conical bore that its inner becomes larger outward.
3. self sealss swing type soft-sealing check valve according to claim 1 or 2, it is characterised in that：Covered on the valve shaft
Equipped with valve plate（5）The spring of damping action can be played in opening process.
4. self sealss swing type soft-sealing check valve according to claim 1 or 2, it is characterised in that：Filled on the valve shaft
There are lever, the valve body（1）On be hinged with damping oil cylinder or damping cylinder, the piston rod of the damping oil cylinder or damping cylinder with
The lever is hinged.
5. self sealss swing type soft-sealing check valve according to claim 1 or 2, it is characterised in that：Filled on the valve shaft
Have and balancing weight is housed on lever, lever.
6. self sealss swing type soft-sealing check valve according to claim 1, it is characterised in that：The elastic sealing layer
（6）For rubber sealant or teflon seal layer.
7. self sealss swing type soft-sealing check valve according to claim 1, it is characterized in that：The counterbore（7）And feed liquor
Chamber（2）It is arranged concentrically.
8. the self sealss swing type soft-sealing check valve according to any claim in claim 1,2,6 and 7, its feature
It is：The rocking bar（4）It is upper that cushion pad is housed（10）.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510773646.8A CN105351573B (en) | 2015-11-13 | 2015-11-13 | Self sealss swing type soft-sealing check valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510773646.8A CN105351573B (en) | 2015-11-13 | 2015-11-13 | Self sealss swing type soft-sealing check valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105351573A CN105351573A (en) | 2016-02-24 |
| CN105351573B true CN105351573B (en) | 2017-10-31 |
Family
ID=55327602
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510773646.8A Active CN105351573B (en) | 2015-11-13 | 2015-11-13 | Self sealss swing type soft-sealing check valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105351573B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107061822B (en) * | 2017-01-10 | 2023-05-16 | 广东省安全生产技术中心有限公司 | Explosion-proof valve for explosive dust environment |
| CN110715058B (en) * | 2019-10-10 | 2021-08-27 | 北京特种机械研究所 | Load-carrying adjustable electric proportion large-flow one-way throttle valve |
| CN111501901A (en) * | 2020-04-20 | 2020-08-07 | 常州市市政工程设计研究院有限公司 | Rainwater collection system and method |
| EP4039656B1 (en) * | 2020-12-08 | 2023-10-25 | Utsunomiya Kogyo Co., Ltd. | Jet nozzle for scum removal device, and water conduit provided with jet nozzle for scum removal device |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1274055A (en) * | 1999-05-14 | 2000-11-22 | 刘光裕 | Sealing part of valve |
| US6668858B1 (en) * | 2002-10-29 | 2003-12-30 | Pentair Pool Products, Inc. | Check valve |
| JP4885105B2 (en) * | 2007-10-11 | 2012-02-29 | 三菱重工業株式会社 | Fluid switching valve device, exhaust gas control valve and wastegate valve provided with the same |
| CN201810830U (en) * | 2010-10-11 | 2011-04-27 | 芜湖市金贸流体科技股份有限公司 | Rubber-covered swing check valve |
| CN201909064U (en) * | 2010-11-19 | 2011-07-27 | 四川制动科技股份有限公司 | Novel bidirectional valve |
| CN202056362U (en) * | 2011-05-29 | 2011-11-30 | 楚凤池 | Self-locking nonreturn type drainer |
| CN204729694U (en) * | 2015-07-04 | 2015-10-28 | 方正阀门集团(温州)机械制造有限公司 | Swing check valve |
| CN205118345U (en) * | 2015-11-13 | 2016-03-30 | 山东莱德机械有限公司 | Formula soft seal check valve is opened soon in self sealss |
-
2015
- 2015-11-13 CN CN201510773646.8A patent/CN105351573B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN105351573A (en) | 2016-02-24 |
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