CN108131473A - The check valve of decompression function built in a kind of band - Google Patents
The check valve of decompression function built in a kind of band Download PDFInfo
- Publication number
- CN108131473A CN108131473A CN201810096046.6A CN201810096046A CN108131473A CN 108131473 A CN108131473 A CN 108131473A CN 201810096046 A CN201810096046 A CN 201810096046A CN 108131473 A CN108131473 A CN 108131473A
- Authority
- CN
- China
- Prior art keywords
- spool
- spring
- flap
- valve
- valve rod
- 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
- 230000006837 decompression Effects 0.000 title claims abstract description 12
- 238000007789 sealing Methods 0.000 claims abstract description 33
- 239000012530 fluid Substances 0.000 claims abstract description 18
- 230000000694 effects Effects 0.000 claims abstract description 11
- 230000000903 blocking effect Effects 0.000 claims abstract description 3
- 239000007788 liquid Substances 0.000 claims description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 56
- 238000010992 reflux Methods 0.000 abstract description 5
- 206010020852 Hypertonia Diseases 0.000 abstract description 2
- 230000002457 bidirectional effect Effects 0.000 description 4
- 230000007812 deficiency Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
Classifications
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- 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
- F16K15/08—Check valves with guided rigid valve members shaped as rings
- F16K15/10—Check valves with guided rigid valve members shaped as rings integral with, or rigidly fixed to, a common valve plate
-
- 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
- F16K17/00—Safety valves; Equalising valves, e.g. pressure relief valves
- F16K17/02—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side
- F16K17/04—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side spring-loaded
- F16K17/0413—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side spring-loaded in the form of closure plates
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Safety Valves (AREA)
- Check Valves (AREA)
Abstract
The invention discloses a kind of check valves of decompression function built in band, it includes valve body, it is axially disposed in valve body to have fluid channel, annular sealing surface and spring base are fixed at intervals in fluid channel, the first core assembly is provided between fluid channel annular sealing surface and spring base, first core assembly includes the first spool and the first spring, first spool is in sealing contact with annular sealing surface under the action of the first spring, first spool upper edge is axially through being provided with relief hole, the second core assembly for blocking relief hole is additionally provided in valve body, second core assembly includes the second spool and second spring, second spool blocks relief hole under second spring effect, the opening direction of second spool is opposite with the opening direction of the first spool.Check valve in the present invention is adapted to mount to water-heater water tank water inlet, and in water-heater water tank normal water supply, pipeline can be connected in check valve, and when water-heater water tank hypertonia, check valve being capable of reflux pressure letdown.
Description
Technical field
The present invention relates to a kind of check valves of decompression function built in band, belong to one-way valve structures design field.
Background technology
A kind of shut-off valve is disclosed in patent document CN101956846B, including：Valve body, catch, spool, spring, spring
Seat and locking plate, valve body are hollow cylinders, and the both ends of valve body are all machined with internal thread, and catch is the annulus of bowl-type, and catch passes through spiral shell
Line is connected to the left end of valve inner, and spool is withstood on by spring in the hole of catch, and one end of spring is withstood on spool, spring
The other end is withstood on spring base, and spring base is with externally threaded disk, is evenly equipped with hole on disk, spring base is threadedly attached in
The right end of valve inner, locking plate are with externally threaded annulus, and locking plate is threadedly attached in the right side of spring base, catch, bullet
Spring abutment and locking plate can be adjusted in the position of valve inner by screw thread.It is above-mentioned that shut-off valve is accessed into pipeline when in use,
When the hydraulic pressure in pipeline reaches Opening pressure, hydraulic pressure overcomes the elastic force of compressed spring to push spool open conducting pipeline, works as hydraulic pressure
Spool offsets to block pipeline with locking plate under the action of compressed spring when relatively low, to prevent water from flowing back to stream.Above-mentioned patent
Technological deficiency existing for shut-off valve in document is, when system pressure is excessive, extra pressure can not be discharged, so as to lead
Cause system locally bursts, and there are security risks.
In addition, a kind of shut-off valve with relief function is disclosed in patent document CN105257874A, including valve body, institute
That states valve body is internally provided with valve chamber, and the port of export of valve body is provided with overflow mechanism, be provided on the valve body by valve chamber with
The pressure release passage of overflow mechanism connection, the overflow mechanism include safe valve chest, guide rod and pressure ring, the safe valve chest
It is fixedly connected with valve outlet end, the guide rod is fixed on the inside of safe valve chest, and the pressure ring is arranged on the guide bar
With guide rod clearance fit, spring is provided between pressure ring and safe valve chest, the spring is set on guide rod, is pacifying
The bottom of full valve housing is provided with overflow port.Shut-off valve disclosed in the patent document has the function of overflow pressure relief, i.e., in system
When pressure is excessive, extra pressure can be discharged by compressing overflow mechanism, system is avoided locally to burst, improve system
Safety, however the valve disclosed in the patent document is substantially relief valve, is only used for unidirectional pressure release, is not suitable for
In the environment of bidirectional bearing, the scope of application is restricted.
In conclusion also there are urgently improvements in existing one-way valve structures.
Invention content
In this regard, the present invention is intended to provide a kind of check valve of decompression function built in band rational in infrastructure, the check valve are suitable for
It is installed and used in bidirectional bearing environment, which is adapted to mount to water-heater water tank water inlet, in water-heater water tank just
When often supplying water, pipeline can be connected in check valve, and when water-heater water tank hypertonia, check valve being capable of reflux pressure letdown.
Realizing the technical solution of the object of the invention is：
The check valve of decompression function built in a kind of band, including valve body, in the valve body it is axially disposed have pass through for fluid
Fluid channel, be fixed at intervals annular sealing surface and spring base in the fluid channel, the annular in the fluid channel
The first core assembly is provided between sealing surface and spring base, first core assembly includes the first spool and the first spring,
The both ends of first spring offset respectively with the first spool and spring base, first spool under the action of the first spring with
Annular sealing surface is in sealing contact, and the first spool upper edge is additionally provided in the valve body and is used for axially through relief hole is provided with
The second core assembly of relief hole is blocked, second core assembly includes the second spool and second spring, second spool
The relief hole, the opening direction of the opening direction of second spool and first spool are blocked under second spring effect
On the contrary.
In above-mentioned technical proposal, first spool is connected and composed by the first flap and the first valve rod, first valve rod
It being fixed on the first flap center and extends towards spring base direction, first spring is same to be located in first stem exterior,
Its both ends offsets respectively with the first flap and spring base, first flap and the annular under the action of first spring
Sealing surface is in sealing contact, and the relief hole is coaxially disposed through on first valve rod.
In above-mentioned technical proposal, second core assembly is installed on first spool：Second spool is by the second valve
Valve, the second valve rod and cannula portion are sequentially connected composition, and second flap is set on first flap back to the side of spring base,
Its outer diameter is more than the bore of the relief hole, second valve rod be fixed on the second flap center and across after relief hole with it is described
The first end of cannula portion is fixedly connected, and the gap between second valve rod and relief hole inner wall forms overflow ducts, the set
Pipe portion is equipped with the liquid pass hole that connect with the overflow ducts, and described sleeve pipe portion movable set is in first spring and described the
Between one valve rod, the spring base center is equipped with the mounting hole for being suitable for installing described sleeve pipe portion, the second spring installing
Between first spring and the first valve rod, both ends offset respectively with the first flap and described sleeve pipe portion second end, in institute
State under the action of second spring second flap and the first flap be in sealing contact blocks relief hole, described sleeve pipe portion with it is described
First valve rod is limited by position limiting structure activity and connected.
In above-mentioned technical proposal, the position limiting structure includes the limiting slot taken shape on described sleeve pipe portion inner wall and takes shape in
The positive stop lug boss that first valve stem end extends radially outward, the positive stop lug boss are suitable for being limited in the limiting slot
Activity.
In above-mentioned technical proposal, the spring base is threaded in the valve body.
The present invention has positive effect：
(1) check valve in the present invention is accessed on water-heater water tank water inlet pipe, when supplying water into water-heater water tank, pipeline
In hydraulic pressure overcome the first spring elastic force push the first spool movement it is made to be detached with annular sealing surface, as shown in Fig. 2, flow
It being entered in water-heater water tank by check valve, when stopping supplying water into water-heater water tank, hydraulic pressure reduces in pipeline, and described first
Spool is in sealing contact with annular sealing surface under the action of the first spring, so as to which pipeline to be blocked to the water avoided in water-heater water tank
It flows back, when hot water temperature is excessively high in water-heater water tank, and the sharp increase of water-heater water tank internal pressure is caused to reach point of safes, such as
Shown in Fig. 3, larger active force is generated inside water-heater water tank to the second spool, the second spool is made to overcome the elastic force of second spring
Movement opens relief hole, and then water-heater water tank internal water is back to by check valve in pipeline, so as to reduce water heater
Water tank internal pressure so that system (water-heater water tank) running in a safe condition.It is reasonable that the structure of the present invention simplifies, in system
During normal operation can anti-backflow, during system overvoltage can reflux pressure letdown, there is good practicability.List in the present embodiment
To valve in addition to being applied on water-heater water tank water inlet pipe, it is possible to use in the environment of other bidirectional bearings.
Description of the drawings
Fig. 1 is the structure diagram of check valve in the present invention；
Fig. 2 is topology view when check valve is intake in the present invention；
Topology view when Fig. 3 is check valve pressure release in the present invention.
Reference numeral is shown in figure：1- valve bodies；2- fluid channels；3- annular sealing surfaces；4- spring bases；The first valves of 5-
Core；51- relief holes；The first flaps of 52-；The first valve rods of 53-；531- positive stop lug boss；The first springs of 6-；The second spools of 7-；71-
Two flaps；The second valve rods of 72-；721- gaps；73- cannula portions；731- liquid pass holes；732- first ends；733- second ends；734- is limited
Position slot；8- second springs.
Specific embodiment
The concrete structure of check valve in the present invention is done with explanation with reference to the accompanying drawings of the specification：
The check valve of decompression function built in a kind of band as shown in Figure 1, it includes valve body 1, is set in an axial direction in the valve body 1
Be equipped with for fluid by fluid channel 2, be fixed at intervals annular sealing surface 3 and spring base 4 in the fluid channel 2, it is described
The first core assembly, the first core assembly packet are provided in fluid channel 2 between the annular sealing surface 3 and spring base 4
The first spool 5 and the first spring 6 are included, the both ends of first spring 6 offset respectively with the first spool 5 and spring base 4, and described
One spool 5 is in sealing contact with annular sealing surface 3 under the action of the first spring 6, and 5 upper edge of the first spool is axially through setting
There is relief hole 51, the second core assembly for blocking relief hole 51, the second core assembly packet are additionally provided in the valve body 1
Including the second spool 7 and second spring 8, second spool 7 blocks the relief hole 51 under the effect of second spring 8, and described the
The opening direction of two spools 7 is opposite with the opening direction of first spool 5.Check valve in the present embodiment is packed into water heater
On tank inlet pipe, when supplying water into water-heater water tank, the hydraulic pressure in pipeline overcomes the elastic force of the first spring 6 to push the first spool
5 movements make it be detached with annular sealing surface 3, as shown in Fig. 2, flow is entered by check valve in water-heater water tank, stop to
When supplying water in water-heater water tank, hydraulic pressure reduces in pipeline, first spool 5 under the action of the first spring 6 with ring packing
Face 3 is in sealing contact, the water in water-heater water tank is avoided to flow back so that pipeline be blocked, the hot water in water-heater water tank
When temperature increases and leads to water-heater water tank internal pressure sharp increase arrival point of safes, as shown in figure 3, water-heater water tank internal pressure
Larger active force is generated to the second spool 7, the elastic force movement that the second spool 7 overcomes second spring 8 is made to open relief hole 51,
And then water-heater water tank internal water is back to by check valve in pipeline, has the function that reflux pressure letdown, so as to reduce hot water
Device water tank internal pressure so that system (water-heater water tank) running in a safe condition.It is reasonable that the structure of the present invention simplifies, and is being
During normal operation of uniting can anti-backflow, during system overvoltage can reflux pressure letdown, there is good practicability.In the present embodiment
Check valve is in addition to being applied on water-heater water tank water inlet pipe, it is possible to use in the environment of other bidirectional bearings.
In the present embodiment, first spool 5 is connected and composed by the first flap 52 and the first valve rod 53, first valve rod
53 are fixed on 52 center of the first flap and extend towards 4 direction of spring base, and first spring 6 is same to be located in first valve rod
Outside 53, both ends offset respectively with the first flap 52 and spring base 4, first valve under the action of first spring 6
Valve 52 and the annular sealing surface 3 are in sealing contact, and the relief hole 51 is coaxially disposed through on first valve rod 53.
Further, second core assembly is installed on first spool 5：Second spool 7 is by the second flap 71,
Two valve rods 72 and cannula portion 73 are sequentially connected composition, and second flap 71 is set on first flap 52 back to spring base 4
Side, outer diameter are more than the bore of the relief hole 51, and second valve rod 72 is fixed on 71 center of the second flap and passes through and lets out
Pressure is fixedly connected behind hole 51 with the first end 732 in described sleeve pipe portion 73, is set between 51 inner wall of second valve rod 72 and relief hole
There is gap 721, described sleeve pipe portion 73 is equipped with the liquid pass hole 731 connected with the overflow ducts 721,73 activity of described sleeve pipe portion
It is set between first spring 6 and first valve rod 53,4 center of spring base, which is equipped with, to be suitable for installing the set
The mounting hole 8 of pipe portion 73, the second spring 8 are installed between 6 and first valve rod 53 of the first spring, both ends respectively with
First flap 52 and 73 second end 733 of described sleeve pipe portion offset, under the action of the second spring 8 second flap 71 with
First flap 52 is in sealing contact to block relief hole 51, and described sleeve pipe portion 73 passes through position limiting structure activity with first valve rod 53
Limiting connection, so that cannula portion 73 can be moved to axial with the first valve rod 53, but cannot detach.Using this knot
Structure, when temperature is excessively high in water-heater water tank leads to the sharp increase of water-heater water tank internal pressure, the effect of water-heater water tank internal pressure
In the second flap 71 being made to be detached with the first flap 52 on the second spool 7, so as to relief hole 51 be opened, inside water-heater water tank
Water is entered by liquid pass hole 731 and the gap 721 in water inlet pipe；In addition, using the above structure, in completed knocked down products, first
First core assembly, the second core assembly and spring base 4 are assembled into assembly according to above-mentioned structure, then by the assembly
It is packed into the fluid channel 2 of valve body 1, without each component is packed into one by one inside valve body 1, assembling is convenient, can effectively carry
High product efficiency of assembling.
Further, the position limiting structure includes the limiting slot 734 taken shape on 73 inner wall of described sleeve pipe portion and takes shape in institute
The positive stop lug boss 531 that 53 end of the first valve rod extends radially outward is stated, the positive stop lug boss 531 is limited in the limiting slot
It is movable in 734.Coordinated by limiting slot 734 and positive stop lug boss 531 by 73 and first valve rod of cannula portion, 53 effective carry out activity
Limiting connection, structure simplify reasonable.
In order to reduce parts usage amount, and ensure the reliability of assembling product, the screw thread of spring base 4 described in the present embodiment
Be connected in the valve body 1, i.e., external screw thread be set on the periphery wall of described spring base 4, in valve body 1 corresponding position setting with it is described
The matched internal thread of external screw thread, in assembling, screwing spring base 4 using tool can be installed.The annular sealing surface 2 one
It is body formed on 2 inner wall of fluid channel, in practice operation, the annular sealing surface 2 also can be by the ring that is fixed in fluid channel 2
Shape component provides.
Obviously, the above embodiment of the present invention be only to clearly illustrate example of the present invention, and not be pair
The restriction of embodiments of the present invention.For those of ordinary skill in the art, may be used also on the basis of the above description
To make other variations or changes in different ways.There is no necessity and possibility to exhaust all the enbodiments.And these
The obvious changes or variations that the connotation for belonging to of the invention is extended out still fall within protection scope of the present invention.
Claims (5)
1. the check valve of decompression function built in a kind of band, axially disposed in the valve body (1) to have for fluid including valve body (1)
By fluid channel (2), is fixed at intervals annular sealing surface (3) and spring base (4), the stream in the fluid channel (2)
The first core assembly, the first spool group are provided in body channel (2) between the annular sealing surface (3) and spring base (4)
Part includes the first spool (5) and the first spring (6), the both ends of first spring (6) respectively with the first spool (5) and spring base
(4) it offsets, first spool (5) is in sealing contact with annular sealing surface (3) under the action of the first spring (6), and feature exists
In the first spool (5) upper edge is additionally provided in the valve body (1) and is let out for blocking axially through relief hole (51) is provided with
Press hole (51) the second core assembly, second core assembly include the second spool (7) and second spring (8), described second
Spool (7) in the lower closure relief hole (51) of second spring (8) effect, the opening direction of second spool (7) with it is described
The opening direction of first spool (5) is opposite.
2. the check valve of decompression function built in band according to claim 1, which is characterized in that first spool (5) by
First flap (52) and the first valve rod (53) connect and compose, and first valve rod (53) is fixed on the first flap (52) center and court
Extend to spring base (4) direction, first spring (6) is external with first valve rod (53) is located in, both ends respectively with
First flap (52) and spring base (4) offset, first flap (52) and the ring under the action of first spring (6)
Shape sealing surface (3) is in sealing contact, and the relief hole (51) is coaxially disposed through on first valve rod (53).
3. the check valve of decompression function built in band according to claim 2, which is characterized in that the second core assembly dress
On first spool (5)：Second spool (7) by the second flap (71), the second valve rod (72) and cannula portion (73) successively
It connects and composes, for second flap (71) set on first flap (52) back to the side of spring base (4), outer diameter is more than institute
State the bore of relief hole (51), second valve rod (72) be fixed on the second flap (71) center and across relief hole (51) afterwards with
The first end (732) in described sleeve pipe portion (73) is fixedly connected, and is equipped between second valve rod (72) and relief hole (51) inner wall
Gap (721), described sleeve pipe portion (73) are equipped with the liquid pass hole (731) connected with the overflow ducts (721), described sleeve pipe portion
(73) between first spring (6) and first valve rod (53), spring base (4) center is equipped with movable set
Suitable for installing the mounting hole (8) of described sleeve pipe portion (73), the second spring (8) is installed in first spring (6) and first
Between valve rod (53), both ends offset respectively with the first flap (52) and described sleeve pipe portion (73) second end (733), described
Second flap (71) and the first flap (52) are in sealing contact under the action of two springs (8) blocks relief hole (51), described
Cannula portion (73) is limited by position limiting structure activity with first valve rod (53) and connected.
4. the check valve of decompression function built in band according to claim 3, which is characterized in that the position limiting structure include into
Type is in the limiting slot (734) on described sleeve pipe portion (73) inner wall and takes shape in the first valve rod (53) end and radially prolongs
The positive stop lug boss (531) stretched, the positive stop lug boss (531) are limited in the limiting slot (734) movable.
5. the check valve of decompression function built in band according to claim 3 or 4, which is characterized in that spring base (4) spiral shell
Line is connected in the valve body (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810096046.6A CN108131473B (en) | 2018-01-31 | 2018-01-31 | One-way valve with built-in pressure relief function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810096046.6A CN108131473B (en) | 2018-01-31 | 2018-01-31 | One-way valve with built-in pressure relief function |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108131473A true CN108131473A (en) | 2018-06-08 |
| CN108131473B CN108131473B (en) | 2024-08-30 |
Family
ID=62430356
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810096046.6A Active CN108131473B (en) | 2018-01-31 | 2018-01-31 | One-way valve with built-in pressure relief function |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108131473B (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108799569A (en) * | 2018-07-26 | 2018-11-13 | 东莞市蛮牛净水设备配件有限公司 | A kind of non-return valve |
| CN110005847A (en) * | 2018-09-29 | 2019-07-12 | 台州市国人温控卫浴科技有限公司 | Check (non-return) valve with decompression function |
| CN110595076A (en) * | 2019-10-22 | 2019-12-20 | 广东瑞发水箱制品有限公司 | Full-automatic pressure-bearing non-pressure operation system of water storage type water heater |
| CN110748675A (en) * | 2019-10-21 | 2020-02-04 | 杭州鸿雁管道系统科技有限公司 | Multipurpose valve system for pressure-bearing water tank water heater |
| CN111457135A (en) * | 2020-04-08 | 2020-07-28 | 浙江衢州杰晟热能科技有限公司 | Safety valve of water heater and water heater using same |
| CN114962732A (en) * | 2022-08-01 | 2022-08-30 | 沈阳泰科流体控制有限公司 | Water hammer-proof safety regulation balance check valve |
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| JPH0566378U (en) * | 1992-02-18 | 1993-09-03 | 株式会社イナックス | Check valve with constant flow valve |
| JPH09203473A (en) * | 1995-11-20 | 1997-08-05 | Inax Corp | Check valve device |
| CN2519893Y (en) * | 2001-11-10 | 2002-11-06 | 玉环县万利得机械厂 | Pressure releasing structure for one-way valve of electric water heater |
| CN102287558A (en) * | 2011-08-19 | 2011-12-21 | 青岛金黄海集装箱有限公司 | Check valve with safety valve |
| JP2012180935A (en) * | 2012-04-10 | 2012-09-20 | Mitsubishi Electric Corp | Check valve, and hot water storing type hot water supplier using the same |
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| CN203906897U (en) * | 2014-06-09 | 2014-10-29 | 成都华气厚普机电设备股份有限公司 | Low-temperature safety check valve |
| CN205618745U (en) * | 2016-05-17 | 2016-10-05 | 厦门瑞尔特卫浴科技股份有限公司 | Prevent flowing backwards valve gear and have its solenoid valve |
| CN208204110U (en) * | 2018-01-31 | 2018-12-07 | 浙江神太太阳能股份有限公司 | The check valve of decompression function built in a kind of band |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3379213A (en) * | 1966-01-12 | 1968-04-23 | Bastian Blessing Co | Excess flow check valve |
| JPH0566378U (en) * | 1992-02-18 | 1993-09-03 | 株式会社イナックス | Check valve with constant flow valve |
| JPH09203473A (en) * | 1995-11-20 | 1997-08-05 | Inax Corp | Check valve device |
| CN2519893Y (en) * | 2001-11-10 | 2002-11-06 | 玉环县万利得机械厂 | Pressure releasing structure for one-way valve of electric water heater |
| CN102287558A (en) * | 2011-08-19 | 2011-12-21 | 青岛金黄海集装箱有限公司 | Check valve with safety valve |
| JP2012180935A (en) * | 2012-04-10 | 2012-09-20 | Mitsubishi Electric Corp | Check valve, and hot water storing type hot water supplier using the same |
| JP2014190523A (en) * | 2013-03-28 | 2014-10-06 | Time Engineering Co Ltd | Check valve |
| CN203906897U (en) * | 2014-06-09 | 2014-10-29 | 成都华气厚普机电设备股份有限公司 | Low-temperature safety check valve |
| CN205618745U (en) * | 2016-05-17 | 2016-10-05 | 厦门瑞尔特卫浴科技股份有限公司 | Prevent flowing backwards valve gear and have its solenoid valve |
| CN208204110U (en) * | 2018-01-31 | 2018-12-07 | 浙江神太太阳能股份有限公司 | The check valve of decompression function built in a kind of band |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108799569A (en) * | 2018-07-26 | 2018-11-13 | 东莞市蛮牛净水设备配件有限公司 | A kind of non-return valve |
| CN110005847A (en) * | 2018-09-29 | 2019-07-12 | 台州市国人温控卫浴科技有限公司 | Check (non-return) valve with decompression function |
| CN110748675A (en) * | 2019-10-21 | 2020-02-04 | 杭州鸿雁管道系统科技有限公司 | Multipurpose valve system for pressure-bearing water tank water heater |
| CN110748675B (en) * | 2019-10-21 | 2024-05-03 | 杭州鸿雁管道系统科技有限公司 | Multipurpose valve system for pressure-bearing water tank water heater |
| CN110595076A (en) * | 2019-10-22 | 2019-12-20 | 广东瑞发水箱制品有限公司 | Full-automatic pressure-bearing non-pressure operation system of water storage type water heater |
| CN111457135A (en) * | 2020-04-08 | 2020-07-28 | 浙江衢州杰晟热能科技有限公司 | Safety valve of water heater and water heater using same |
| CN111457135B (en) * | 2020-04-08 | 2021-10-01 | 浙江衢州杰晟热能科技有限公司 | Safety valve of water heater and water heater using same |
| CN114962732A (en) * | 2022-08-01 | 2022-08-30 | 沈阳泰科流体控制有限公司 | Water hammer-proof safety regulation balance check valve |
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| CN108131473B (en) | 2024-08-30 |
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