CN109707875A - Turnover plate type non-return valve - Google Patents
Turnover plate type non-return valve Download PDFInfo
- Publication number
- CN109707875A CN109707875A CN201711017880.3A CN201711017880A CN109707875A CN 109707875 A CN109707875 A CN 109707875A CN 201711017880 A CN201711017880 A CN 201711017880A CN 109707875 A CN109707875 A CN 109707875A
- Authority
- CN
- China
- Prior art keywords
- wall
- fixing seat
- flap
- internal perisporium
- plate type
- 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.)
- Granted
Links
- 230000007306 turnover Effects 0.000 title claims abstract description 19
- 239000012530 fluid Substances 0.000 claims abstract description 23
- 230000006978 adaptation Effects 0.000 claims abstract description 3
- 230000002093 peripheral effect Effects 0.000 claims description 14
- 238000007789 sealing Methods 0.000 claims description 7
- 230000001154 acute effect Effects 0.000 claims description 3
- 238000004806 packaging method and process Methods 0.000 abstract description 3
- 239000007787 solid Substances 0.000 abstract description 3
- 239000002184 metal Substances 0.000 abstract description 2
- 230000007812 deficiency Effects 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 230000008878 coupling Effects 0.000 description 3
- 238000010168 coupling process Methods 0.000 description 3
- 238000005859 coupling reaction Methods 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 238000000034 method Methods 0.000 description 2
- 239000002253 acid Substances 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
Abstract
The invention discloses turnover plate type non-return valve, including valve seat and flap, fluid channel is set in the valve seat, which includes housing parts and fixing seat, which sets through hole, which constitutes the part of fluid channel；One end face of the fixing seat is convexly equipped with the protrusion at two intervals, and the outer wall backwards to through hole of the protrusion is recessed fluted；The flap has interconnecting piece, and the two sides of the interconnecting piece are all convexly equipped with shaft, and two shaft adaptation is connected in two grooves and constitutes rotation connection, and the interconnecting piece is between two protrusions；The fixing seat, which is capable of fixing, to be installed into housing parts, and shaft is limited by fixing seat and housing parts inner wall and is detached from groove, shaft and fixing seat are connected, then had both saved the connection structures such as bolt, and had avoided the occurrence of metal bolts, in turn avoid the possibility that fixture block is detached from or is broken, assemble simple and convenient, packaging efficiency promotion, expansion application field, it is solid and reliable, promote fixing, the stability of product.
Description
Technical field
The present invention relates to a kind of non-return valve more particularly to a kind of turnover plate type non-return valves.
Background technique
Traditional non-return valve, such as double by enabling non-return valve, the general double-joint type non-return valve for using ball-type or hemispheric, it exists
Have following deficiency: ball-type or hemispheric are also easy to produce resonance under water environment, will cause noise in entire pipe-line system.Needle
To disadvantages mentioned above, it is thus proposed that the technical solution of turnover plate type non-return valve.
Traditional turnover plate type non-return valve, valve seat and a flap including setting fluid channel in one.The flap is rotatably connected on
It valve seat and can swing between open and closed positions, forward stream physical efficiency effect flap makes flap be in corresponding fluid channel
The open position of opening, counter fluid, which can act on flap, makes flap be abutted against annular convex platform end face in sealing to close fluid channel
Closed position.Flap includes coupling part, and interconnecting piece sets up pivot separately, pivots and is connected to valve seat, and pivot and valve seat use
Bolt is locked together, therefore is had the following deficiencies: first, realize locking using 8~12 sets of bolts, packaging efficiency compared with
It is low；Second, bolt is metal material, dare not be selected under acid or alkali environment, application is restricted.
In view of the above deficiencies, Chinese patent database discloses a solution, such as CN106195361A.The valve seat is set
Have a connected unit, be convexly equipped with two spaced apart projection seats on the connected unit, the opposite of practising physiognomy of the projection seat be recessed with one pass to it is convex
The link slot of seat terminal surface and a transverse groove that is vertical and connecting link slot；The coupling part is folded between two projection seats, the pivot
Axis connection enables pivot to rotate relative to link slot, is able to rotate coupling part and is connected to valve seat in link slot.Separately in the transverse direction
It is arranged with fixture block at slot, pivot is limited by fixture block and is disconnected slot.Though it can solve above-mentioned deficiency, can bring it is new not
Foot place: there are the risks for dropping out or being broken under transport or impact of water hammer for fixture block.
Summary of the invention
The present invention provides turnover plate type non-return valves, and which overcome deficiencies present in turnover plate type non-return valve in background technique.
The used technical solution that the present invention solves its technical problem is:
Turnover plate type non-return valve, including valve seat (10) and flap (20), the valve seat (10) is interior to set fluid channel (30), the flap
(20) it is rotatably connected on valve seat (10) and can swing between open and closed positions, which includes housing parts
(11) and fixing seat (12), the fixing seat (12) set through hole, which constitutes the part of fluid channel (30)；The fixing seat
(12) a end face is convexly equipped with the protrusion (13) at two intervals, and the outer wall backwards to through hole of the protrusion (13) is recessed fluted
(14)；The flap (20) has interconnecting piece (21), and the two sides of the interconnecting piece (21) are all convexly equipped with shaft (22), two shaft
(22) adaptation is connected in two grooves (14) and constitutes rotation connection, and the interconnecting piece (21) is between two protrusions (13)；This is solid
Reservation (12), which is capable of fixing, to be installed into housing parts (11), and limits shaft by fixing seat (12) and housing parts (11) inner wall
(22) groove (14) are detached from.
Among one embodiment: the housing parts (11) include hollow valve pocket (111), pipe fitting (112) and nut
(113), which extends outward into the first ring convex, which extends internally
At the second ring convex, which is socketed pipe fitting (112) and is screwed onto valve pocket (111), the second ring convex first ring convex of contact
Valve pocket (111), pipe fitting (112) and nut (113) to be connected；Valve pocket (111) inner wall is at least provided with a support
Face (114), fixing seat (12) contact are set between supporting surface (114) and pipe fitting (112) end face, the groove (14) and valve pocket
(111) inner wall cooperation limitation shaft (22) is detached from groove (14).
Among one embodiment: valve pocket (111) inner wall is convexly equipped with rib, this is right for one end opposing valve sleeves (111) of the rib
Should port inside contract, one end end face of the rib constitutes above-mentioned supporting surface (114).
Among one embodiment: the fixing seat (12) includes a periphery wall, an internal perisporium and an affixed periphery wall and internal perisporium
Ring wall；Two protrusion (13) is fixed on the periphery wall and internal perisporium；Fixing seat (12) the periphery wall contact is set to supporting surface
(114) between pipe fitting (112) end face.
Among one embodiment: the flap (20) includes the wall that a top wall portion and a upper peripheral edge are fixed in top wall portion
(23), which has the extension stretched out except wall (23), and the outer diameter of the extension is greater than internal perisporium internal diameter,
The outer diameter of the wall is less than internal perisporium internal diameter, and flap in the closed position (20): the wall (23) is located within internal perisporium, should
Extension sealing abuts against internal perisporium end face.
Among one embodiment: wall (23) bottom periphery extends radially outwardly into lower ring wall, which is less than interior
Peripheral wall internal diameter, the lower ring wall and extension between the upper and lower every and formed attaching annular groove (24)；Another that gasket seal (25) are arranged, this is close
Gasket (25) socket wall (23) is simultaneously installed in attaching annular groove (24), which, which has, flushes outside top wall portion
Periphery simultaneously stretches out the hermetic unit except lower ring wall, which, which can seal, abuts against internal perisporium end face.
Among one embodiment: the end slope arrangement of the internal perisporium, and the inclination arrangement is the correspondence by fixing seat (12)
The angle of the flow direction of the forward direction fluid of the side of protrusion (13) to the direction of the radial other side and fluid channel (30) is acute angle.
Among one embodiment: the pipe fitting (112) one end inner peripheral also extends internally into third ring convex, the fixing seat
(12) it is supported by the first ring convex and third ring convex.
The technical program compared with the background art, it has the following advantages:
1, groove is arranged backwards to the through hole of fixing seat, and after fixing seat is packed into housing parts, slot opening is towards shell
Internal partial wall can limit shaft by fixing seat and housing parts inner wall and be detached from groove, that is, shaft and fixing seat are installed in one
It rises, had then both saved the connection structures such as bolt, and avoided the occurrence of metal bolts, in turn avoid the possibility that fixture block is detached from or is broken, dress
With simple and convenient, packaging efficiency promotion, expansion application field is solid and reliable, promotes fixing, the stability of product.Moreover, because
It is noiseless using turnover plate type flap, therefore in water environment.
2, at least provided with supporting surface, fixing seat contact is set between supporting surface and pipe fitting end face valve sleeving inner wall, groove and
Valve sleeving inner wall cooperation limitation shaft is detached from groove, and the attaching of pipe fitting, nut and pipe sleeve not only fills pipe fitting, nut and pipe sleeve
It is connected together, goes back positioning and locking fixing seat, structure is simple, easy to assembly.
3, valve sleeving inner wall is convexly equipped with rib, and one end opposing valve sleeves of rib corresponding end port inside contracts, the one end of rib
End face constitutes above-mentioned supporting surface, can enhance the intensity of valve pocket but also be formed with supporting surface, to be connected and fixed seat, structure letter
Single, intensity is good.
4, fixing seat includes periphery wall, internal perisporium and ring wall；Two protrusions are fixed on the periphery wall and internal perisporium, fixing seat
Periphery wall contact is set between supporting surface and pipe fitting end face, and can securely be connected and fixed seat and the secured connection influences
Inverse-stopping functions.
5, flap in the closed position: wall is located within internal perisporium, and extension sealing abuts against internal perisporium end face,
Sealing performance is high when closing, and stability is high when being hit, and can play the guiding role of closing.
6, gasket seal is socketed wall and is installed in attaching annular groove, and gasket seal, which has, flushes top wall portion outer peripheral edge simultaneously
The hermetic unit except lower ring wall is stretched out, hermetic unit, which can seal, abuts against internal perisporium end face, and gasket seal is avoided to be detached from, and enhances
Sealing performance when closing.
7, pipe fitting one end inner peripheral also extends internally into third ring convex, and fixing seat is supported by the first ring convex and third ring
Convex, fixing seat firm and reliable connection, support strength is high, and stability is high when being hit, long service life.
Detailed description of the invention
Present invention will be further explained below with reference to the attached drawings and examples.
Fig. 1 is the stereoscopic schematic diagram of non-return valve of the present invention.
Fig. 2 is one of the perspective exploded view of non-return valve of the present invention.
Fig. 3 is the two of the perspective exploded view of non-return valve of the present invention.
Fig. 4 is the diagrammatic cross-section of non-return valve of the present invention, and non-return valve is in close state.
Fig. 5 is the diagrammatic cross-section of non-return valve of the present invention, and non-return valve is in the open state.
Fig. 6 is the stereoscopic schematic diagram of the cooperation of flap and fixing seat of the invention, and flap is in the closed position.
Fig. 7 is the schematic front view of the cooperation of flap and fixing seat of the invention, and flap is in the closed position.
Fig. 8 is the schematic top plan view of the cooperation of flap and fixing seat of the invention, and flap is in the closed position.
Fig. 9 is the A1-A1 diagrammatic cross-section of Fig. 8.
Figure 10 is the A2-A2 diagrammatic cross-section of Fig. 8.
Figure 11 is the stereoscopic schematic diagram of the cooperation of flap and fixing seat of the invention, and flap is in an open position.
Figure 12 is the schematic front view of the cooperation of flap and fixing seat of the invention, and flap is in an open position.
Figure 13 is the right side view of the cooperation of flap and fixing seat of the invention, and flap is in an open position.
Figure 14 is the left view schematic diagram of the cooperation of flap and fixing seat of the invention, and flap is in an open position.
Figure 15 is the schematic top plan view of the cooperation of flap and fixing seat of the invention, and flap is in an open position.
Figure 16 is the B1-B1 diagrammatic cross-section of Figure 13.
Figure 17 is the B2-B2 diagrammatic cross-section of Figure 13.
Specific embodiment
Fig. 1 to Fig. 5, turnover plate type non-return valve, including valve seat 10 and flap 20 are please referred to, sets fluid channel in the valve seat 10
30, which is rotatably connected on valve seat 10 and can swing between open and closed positions, and positive fluid flows through the stream
When the flap 20 is located at open position when circulation passage 30, non-return valve is in the open state；Counter fluid flows through the circulation passage 30
When the flap 20 when being located at closed position, non-return valve is in close state.The valve seat 10 includes housing parts 11 and fixing seat 12,
Please refer to Fig. 6 to Figure 17, the fixing seat 12 in a ring structure and have through hole 121, the through hole 121 constitute fluid channel 30
Part；One end face of the fixing seat 12 is convexly equipped with the protrusion 13 at two intervals, and the outer wall backwards to through hole 121 of the protrusion 13 is recessed
Equipped with groove 14；The flap 20 has interconnecting piece 21, and the two sides of the interconnecting piece 21 are all convexly equipped with shaft 22, and two shaft 22 is suitable
With being connected in two grooves 14 and constituting rotation connection so that flap 20 is rotatably connected on valve seat 10, the interconnecting piece 21 is convex between two
Between portion 13；The fixing seat 12, which is capable of fixing, to be installed into housing parts 11, and is limited by fixing seat 12 and 11 inner wall of housing parts
Shaft 22 processed is detached from groove 14, and fixing seat 12 and flap 20 are able to rotate and are linked together.
Fig. 1 to Fig. 5 is please referred to, which includes a hollow valve pocket 111, two pipe fittings 112 and two nuts
113, which extends outward into the first ring convex, which extends internally into
Two ring convex, two nut 113 are socketed two pipe fittings 112 respectively and are screwed onto 111 both ends of valve pocket, the second ring convex first ring of contact
It is convex valve pocket 111, pipe fitting 112 and nut 113 to be connected；111 inner wall of valve pocket at least provided with a supporting surface 114,
12 contact of fixing seat is set between 112 end face of supporting surface 114 and pipe fitting, and fixing seat 12 is capable of fixing and is installed into housing section
Divide in 11, the groove 14 and 111 inner wall of valve pocket cooperation limitation shaft 22 are detached from groove 14.Among the present embodiment, in the valve pocket 111
Wall is convexly equipped with rib 115, and one end opposing valve sleeves 111 of the rib 115 corresponding end port inside contracts, the one end of the rib 115
End face constitutes above-mentioned supporting surface 114；The 112 first end inner peripheral of pipe fitting also extends internally into third ring convex, the fixing seat
12 are supported by the first ring convex and third ring convex.The fluid channel 30 includes pipe fitting inner hole, valve pocket inner hole and through hole.
Please refer to Fig. 6 to Figure 17, the fixing seat 12 include a periphery wall 122, an internal perisporium 123 and an affixed periphery wall and
The ring wall of internal perisporium；Two protrusion 13 is fixed on the periphery wall and internal perisporium；12 periphery wall of fixing seat, 122 contact is set to branch
Between 112 end face of support face 114 and pipe fitting.
The flap 20 includes the wall 23 that a top wall portion 26 and a upper peripheral edge are fixed in top wall portion, top wall portion tool
There is the extension stretched out except wall 23, the outer diameter of the extension is greater than internal perisporium internal diameter, and the outer diameter of the wall is less than interior
Peripheral wall internal diameter, flap 20 in the closed position: the wall 23 is located within internal perisporium 123, and extension sealing abuts against
123 end face of internal perisporium.Among the present embodiment: the 23 bottom periphery of wall extends radially outwardly into lower ring wall 231, the lower ring wall outer diameter
Less than internal perisporium internal diameter, the lower ring wall and extension between the upper and lower every and form attaching annular groove 24；It is another that gasket seal 25 is arranged, it should
Gasket seal 25 is socketed wall 23 and is installed in attaching annular groove 24, which, which has, flushes top wall portion outer peripheral edge simultaneously
The hermetic unit except lower ring wall is stretched out, which, which can seal, abuts against internal perisporium end face.The interconnecting piece 21 is fixed in top
Wall part.The end slope of the internal perisporium is arranged, and the inclination arrangement is by the side of the correspondence protrusion 13 of fixing seat 12 to diameter
Angle to the flow direction of the forward direction fluid in the direction and fluid channel 30 of the other side is acute angle, so that counter fluid flows through fluid and leads to
Flap is able to maintain in off position when road.
The above is only the preferred embodiment of the present invention, the range implemented of the present invention that therefore, it cannot be limited according to, i.e., according to
Equivalent changes and modifications made by the invention patent range and description, should still be within the scope of the present invention.
Claims (8)
1. turnover plate type non-return valve, including valve seat (10) and flap (20), the valve seat (10) is interior to set fluid channel (30), the flap
(20) it is rotatably connected on valve seat (10) and can swing between open and closed positions, it is characterised in that: the valve seat (10)
Including housing parts (11) and fixing seat (12), which sets through hole, which constitutes fluid channel (30)
Part；One end face of the fixing seat (12) is convexly equipped with the protrusion (13) at two intervals, the outer wall backwards to through hole of the protrusion (13)
Recessed fluted (14)；The flap (20) has interconnecting piece (21), and the two sides of the interconnecting piece (21) are all convexly equipped with shaft (22),
Two shaft (22) adaptation is connected in two grooves (14) and constitutes rotation connection, the interconnecting piece (21) between two protrusions (13) it
Between；The fixing seat (12), which is capable of fixing, to be installed into housing parts (11), and passes through fixing seat (12) and housing parts (11) inner wall
It limits shaft (22) and is detached from groove (14).
2. turnover plate type non-return valve according to claim 1, it is characterised in that: the housing parts (11) include hollow valve pocket
(111), pipe fitting (112) and nut (113), pipe fitting (112) one end outer peripheral edge extend outward into the first ring convex, the nut
(113) one end inner peripheral extends internally into the second ring convex, which is socketed pipe fitting (112) and is screwed onto valve pocket
(111), first ring convex of the second ring convex contact are valve pocket (111), pipe fitting (112) and nut (113) to be connected；It should
Valve pocket (111) inner wall is set to supporting surface (114) and pipe fitting at least provided with a supporting surface (114), fixing seat (12) contact
(112) between end face, the groove (14) and valve pocket (111) inner wall cooperation limitation shaft (22) are detached from groove (14).
3. turnover plate type non-return valve according to claim 2, it is characterised in that: valve pocket (111) inner wall is convexly equipped with rib, should
One end opposing valve sleeves (111) of rib corresponding end port inside contracts, and one end end face of the rib constitutes above-mentioned supporting surface
(114)。
4. turnover plate type non-return valve according to claim 2 or 3, it is characterised in that: the fixing seat (12) include a periphery wall,
The ring wall of one internal perisporium and an affixed periphery wall and internal perisporium；Two protrusion (13) is fixed on the periphery wall and internal perisporium；It should
Fixing seat (12) periphery wall contact is set between supporting surface (114) and pipe fitting (112) end face.
5. turnover plate type non-return valve according to claim 4, it is characterised in that: the flap (20) includes a top wall portion and one
Upper peripheral edge is fixed in the wall (23) of top wall portion, which has the extension stretched out except wall (23), this is stretched
The outer diameter of part is greater than internal perisporium internal diameter out, and the outer diameter of the wall is less than internal perisporium internal diameter, flap in the closed position (20):
The wall (23) is located within internal perisporium, and extension sealing abuts against internal perisporium end face.
6. turnover plate type non-return valve according to claim 5, it is characterised in that: wall (23) bottom periphery extends radially outwardly
At lower ring wall, which is less than internal perisporium internal diameter, the lower ring wall and extension between the upper and lower every and form attaching annular groove
(24)；Another that gasket seal (25) are arranged, the gasket seal (25) socket wall (23) is simultaneously installed in attaching annular groove (24), this is close
Gasket (25), which has, to be flushed top wall portion outer peripheral edge and stretches out the hermetic unit except lower ring wall, which can seal and lean on
It connects in internal perisporium end face.
7. turnover plate type non-return valve according to claim 4, it is characterised in that: the end slope of the internal perisporium is arranged, and is somebody's turn to do
Be in tilted layout for by fixing seat (12) correspondence protrusion (13) side to the direction of the radial other side and fluid channel (30) it
The angle of the flow direction of positive fluid is acute angle.
8. turnover plate type non-return valve according to claim 4, it is characterised in that: the pipe fitting (112) one end inner peripheral is also
Third ring convex are extended internally into, which is supported by the first ring convex and third ring convex.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711017880.3A CN109707875B (en) | 2017-10-26 | 2017-10-26 | Turning plate type check valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711017880.3A CN109707875B (en) | 2017-10-26 | 2017-10-26 | Turning plate type check valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109707875A true CN109707875A (en) | 2019-05-03 |
| CN109707875B CN109707875B (en) | 2024-02-06 |
Family
ID=66253481
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711017880.3A Active CN109707875B (en) | 2017-10-26 | 2017-10-26 | Turning plate type check valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109707875B (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5341840A (en) * | 1993-11-12 | 1994-08-30 | Tom Wheatley Valve Company | Bonnetless swing check valve |
| ES2066349T3 (en) * | 1990-05-23 | 1995-03-01 | Sugatsune Kogyo | DOOR CLOSING. |
| US20070248478A1 (en) * | 2004-08-30 | 2007-10-25 | Star Micronics Co., Ltd. | Check Valve and Diaphram Pump |
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| CN201954057U (en) * | 2011-02-16 | 2011-08-31 | 鞍山市通顺阀门制造有限公司 | Turnable plate type automatic reversing check valve |
| CN102322543A (en) * | 2011-09-26 | 2012-01-18 | 浙江通用阀门有限公司 | Swing vortex check valve |
| EP2476937A1 (en) * | 2011-01-12 | 2012-07-18 | PRAHER Kunststofftechnik GmbH | Non-return flap |
| CN202612733U (en) * | 2012-05-22 | 2012-12-19 | 厦门三登塑胶工业有限公司 | Bottom valve |
| US20130020520A1 (en) * | 2011-07-18 | 2013-01-24 | Scaramucci John P | Check valve |
| US20130119290A1 (en) * | 2010-12-17 | 2013-05-16 | Ckd Corporation | Fluid control valve |
| CN203880155U (en) * | 2014-04-16 | 2014-10-15 | 温州市海格钢业有限公司 | Noise preventing check valve |
| CN106195361A (en) * | 2016-08-30 | 2016-12-07 | 厦门三登塑胶工业有限公司 | Turnover plate type check (non-return) valve |
| CN205908830U (en) * | 2016-07-05 | 2017-01-25 | 厦门松霖科技有限公司 | Check valve |
| CN206310002U (en) * | 2016-12-21 | 2017-07-07 | 苏州艾尔泰流体控制有限公司 | A kind of check-valves and conduit assembly |
| CN206582362U (en) * | 2017-02-27 | 2017-10-24 | 浙江精恒铜业有限公司 | A kind of Y types check-valves |
| CN207554883U (en) * | 2017-10-26 | 2018-06-29 | 厦门三登塑胶工业有限公司 | A kind of turnover plate type non-return valve |
-
2017
- 2017-10-26 CN CN201711017880.3A patent/CN109707875B/en active Active
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| ES2066349T3 (en) * | 1990-05-23 | 1995-03-01 | Sugatsune Kogyo | DOOR CLOSING. |
| US5341840A (en) * | 1993-11-12 | 1994-08-30 | Tom Wheatley Valve Company | Bonnetless swing check valve |
| US20070248478A1 (en) * | 2004-08-30 | 2007-10-25 | Star Micronics Co., Ltd. | Check Valve and Diaphram Pump |
| US20100051129A1 (en) * | 2006-11-17 | 2010-03-04 | Hiroyuki Kitagawa | Coupling member for pipe coupling |
| US20130119290A1 (en) * | 2010-12-17 | 2013-05-16 | Ckd Corporation | Fluid control valve |
| EP2476937A1 (en) * | 2011-01-12 | 2012-07-18 | PRAHER Kunststofftechnik GmbH | Non-return flap |
| CN201954057U (en) * | 2011-02-16 | 2011-08-31 | 鞍山市通顺阀门制造有限公司 | Turnable plate type automatic reversing check valve |
| US20130020520A1 (en) * | 2011-07-18 | 2013-01-24 | Scaramucci John P | Check valve |
| CN102322543A (en) * | 2011-09-26 | 2012-01-18 | 浙江通用阀门有限公司 | Swing vortex check valve |
| CN202612733U (en) * | 2012-05-22 | 2012-12-19 | 厦门三登塑胶工业有限公司 | Bottom valve |
| CN203880155U (en) * | 2014-04-16 | 2014-10-15 | 温州市海格钢业有限公司 | Noise preventing check valve |
| CN205908830U (en) * | 2016-07-05 | 2017-01-25 | 厦门松霖科技有限公司 | Check valve |
| CN106195361A (en) * | 2016-08-30 | 2016-12-07 | 厦门三登塑胶工业有限公司 | Turnover plate type check (non-return) valve |
| CN206310002U (en) * | 2016-12-21 | 2017-07-07 | 苏州艾尔泰流体控制有限公司 | A kind of check-valves and conduit assembly |
| CN206582362U (en) * | 2017-02-27 | 2017-10-24 | 浙江精恒铜业有限公司 | A kind of Y types check-valves |
| CN207554883U (en) * | 2017-10-26 | 2018-06-29 | 厦门三登塑胶工业有限公司 | A kind of turnover plate type non-return valve |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109707875B (en) | 2024-02-06 |
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