CN208204110U - 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
- CN208204110U CN208204110U CN201820173482.4U CN201820173482U CN208204110U CN 208204110 U CN208204110 U CN 208204110U CN 201820173482 U CN201820173482 U CN 201820173482U CN 208204110 U CN208204110 U CN 208204110U
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- China
- Prior art keywords
- spool
- spring
- flap
- valve
- valve rod
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- Check Valves (AREA)
- Safety Valves (AREA)
Abstract
The utility model 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, along axially through being provided with relief hole on first spool, 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 utility model 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 utility model relates to a kind of check valves of decompression function built in band, belong to one-way valve structures design field.
Background technique
A kind of shut-off valve is disclosed in patent document CN101956846B, comprising: valve body, baffle, spool, spring, spring
Seat and locking plate, valve body are hollow cylinders, and the both ends of valve body are all machined with internal screw thread, and baffle is the annulus of bowl-type, and baffle passes through spiral shell
Line is connected to the left end of valve inner, and spool is withstood in the hole of baffle by spring, and one end of spring is withstood on spool, spring
The other end is withstood on spring base, and spring base is to be evenly equipped with hole on disk, spring base is threadedly attached in externally threaded disk
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, baffle, 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 cracking pressure, hydraulic pressure overcomes the elastic force of compressed spring to push spool open conducting pipeline, works as hydraulic pressure
Spool offsets for pipeline to be truncated with locking plate under the action of compressed spring when lower, 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, disclosing a kind of shut-off valve with relief function, including valve body, institute in patent document CN105257874A
That states valve body is internally provided with valve chamber, and the outlet end 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 includes safe valve chest, guide rod and pressure ring, the safe valve chest
It is fixedly connected with valve body 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 shell 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 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 there is also urgently improvements for existing one-way valve structures.
Utility model content
In this regard, the utility model is intended to provide a kind of structurally reasonable check valve with built-in decompression function, the check valve
Suitable for installing and using in bidirectional bearing environment, which is adapted to mount to water-heater water tank water inlet, in water heater water
When case 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.
Realizing the technical solution of the utility model aim 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 with annular sealing surface and spring base, the annular in the fluid channel 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 with the first spool and spring base respectively, first spool under the action of the first spring with
Annular sealing surface is in sealing contact, along axially through relief hole is provided on first spool, is additionally provided with and is used in the valve body
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 with the first flap and spring base respectively, 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: the second spool is by the second valve
Valve, the second valve rod and cannula portion are sequentially connected composition, and second flap is set to first flap back to the side of spring base,
Its outer diameter be greater than the relief hole bore, second valve rod be fixed on the second flap center and pass through relief hole after with it is described
The first end of cannula portion is fixedly connected, and the overflow ducts between second valve rod and relief hole inner wall form overflow ducts, institute
It states cannula portion and is equipped with the liquid pass hole being connected to the overflow ducts, described sleeve pipe portion movable set is in first spring and institute
It states between the first valve rod, the spring base center is equipped with the mounting hole for being suitable for installing described sleeve pipe portion, the second spring
It being installed between first spring and the first valve rod, both ends offset with the first flap and described sleeve pipe portion second end respectively,
Under the action of the second spring second flap with the first flap is in sealing contact blocks relief hole, described sleeve pipe portion with
First valve rod passes through position limiting structure activity limit connection.
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 utility model has the effect of positive:
(1) check valve in the utility model is accessed on water-heater water tank water inlet pipe, when supplying water into water-heater water tank,
Hydraulic pressure in pipeline overcomes the elastic force of the first spring that the movement of the first spool is pushed to separate it with annular sealing surface, as shown in Fig. 2,
Water flow enters in water-heater water tank by check valve, and when stopping supplying water into water-heater water tank, hydraulic pressure is reduced in pipeline, described
First spool is in sealing contact with annular sealing surface under the action of the first spring, so that pipeline truncation be avoided in water-heater water tank
Water flow back, when in water-heater water tank hot water temperature it is excessively high cause water-heater water tank internal pressure increase severely reach point of safes
When, as shown in figure 3, generating biggish active force to the second spool inside water-heater water tank, the second spool is made to overcome second spring
Elastic force movement relief hole is opened, and then water-heater water tank internal water is back in pipeline by check valve, to reduce
Water-heater water tank internal pressure, so that system (water-heater water tank) running in a safe condition.The structure of the utility model simplifies
Rationally, when system operates normally can anti-backflow, when system overvoltage can reflux pressure letdown, there is good practicability.This
Check valve in embodiment 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.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of check valve in the utility model；
Topology view when Fig. 2 is check valve water inlet in the utility model；
Topology view when Fig. 3 is check valve pressure release in the utility model.
Appended drawing reference as shown in the figure are as follows: 1- valve body；2- fluid channel；3- annular sealing surface；4- spring base；The first valve of 5-
Core；51- relief hole；The first flap of 52-；The first valve rod of 53-；531- positive stop lug boss；The first spring of 6-；The second spool of 7-；71-
Second flap；The second valve rod of 72-；721- overflow ducts；73- cannula portion；731- liquid pass hole；732- first end；733- second
End；734- limiting slot；8- second spring.
Specific embodiment
The specific structure of check valve in the utility model is done to illustrate 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 comprising valve body 1 is set along axial direction in the valve body 1
It is equipped with the fluid channel 2 passed through for fluid, annular sealing surface 3 and spring base 4 are fixed at intervals 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 with the first spool 5 and spring base 4 respectively, and described
One spool 5 is in sealing contact with annular sealing surface 3 under the action of the first spring 6, along axially through setting on first spool 5
It is equipped with relief hole 51, the second core assembly for blocking relief hole 51, second core assembly 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, described
The opening direction of second spool 7 is opposite with the opening direction of first spool 5.Check valve in the present embodiment is packed into hot water
On device 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 valve
The movement of core 5 separates it with annular sealing surface 3, as shown in Fig. 2, water flow enters in water-heater water tank by check valve, stops
When supplying water into water-heater water tank, hydraulic pressure is reduced in pipeline, and first spool 5 is close with annular under the action of the first spring 6
Cover 3 is in sealing contact, to avoid the water in water-heater water tank from flowing back pipeline truncation, when with hot in water-heater water tank
When coolant-temperature gage increases and the sharp increase of water-heater water tank internal pressure is caused to reach point of safes, as shown in figure 3, pressure inside water-heater water tank
Power generates biggish active force to the second spool 7, and relief hole 51 is beaten in the elastic force movement for making the second spool 7 overcome second spring 8
It opens, and then water-heater water tank internal water is back in pipeline by check valve, has the function that reflux pressure letdown, to reduce heat
Water heater tank internal pressure, so that system (water-heater water tank) running in a safe condition.The structure of the utility model, which simplifies, closes
Reason, when system operates normally can anti-backflow, when system overvoltage can reflux pressure letdown, there is good practicability.This reality
The check valve in example is applied 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 with the first flap 52 and spring base 4 respectively, first valve under the action of the 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: the 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 to first flap 52 back to spring base 4
Side, outer diameter are greater 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 are overflow ducts 721, described sleeve pipe portion 73 is equipped with the liquid pass hole 731 being connected to the overflow ducts 721, described sleeve pipe portion
For 73 movable sets between first spring 6 and first valve rod 53,4 center of spring base, which is equipped with, is suitable for installing
The mounting hole in described sleeve pipe portion 73, the second spring 8 are installed between first spring 6 and the first valve rod 53, both ends
It offsets respectively with the first flap 52 and 73 second end 733 of described sleeve pipe portion, described second under the action of second spring 8
Flap 71 with the first flap 52 is in sealing contact blocks relief hole 51, described sleeve pipe portion 73 and first valve rod 53 pass through limit
Structure movement limit connection, so that cannula portion 73 can be moved to axial with the first valve rod 53, but cannot separate.Using
This structure, when temperature is excessively high in water-heater water tank causes water-heater water tank internal pressure to increase severely, pressure inside water-heater water tank
Power, which acts on the second spool 7, separates the second flap 71 with the first flap 52, to relief hole 51 be opened, water heater water
Water inside case enters in water inlet pipe by liquid pass hole 731 and the overflow ducts 721；In addition, using the above structure, in group
When filling product, the first core assembly, the second core assembly and spring base 4 are first assembled into assembly according to above-mentioned structure, so
The assembly is packed into afterwards in the fluid channel 2 of valve body 1, it is not necessary that each component is packed into one by one inside valve body 1, assembly is just
Victory can effectively improve product assembly efficiency.
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.Cooperated by limiting slot 734 and positive stop lug boss 531 by cannula portion 73 and the effective carry out activity of the first valve rod 53
Limit connection, structure simplify reasonable.
In order to reduce components usage amount, and guarantee 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 the described spring base 4, in valve body 1 corresponding position setting with it is described
The matched internal screw 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 can also be by the ring that is fixed in fluid channel 2
Shape component provides.
Obviously, the above embodiments of the present invention is merely examples for clearly illustrating the present invention, and
It is not limitations of the embodiments of the present invention.For those of ordinary skill in the art, in above description
On the basis of can also make other variations or changes in different ways.There is no need and unable to give all embodiments
Exhaustion.And the obvious changes or variations that these connotations for belonging to the utility model are extended out still fall within it is practical
Novel protection scope.
Claims (5)
- It is axially disposed in the valve body (1) to have for fluid 1. the check valve of decompression function built in a kind of band, including valve body (1) By fluid channel (2), is fixed at intervals with 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 include 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 along axially through being provided with relief hole (51) on first spool (5), interior be additionally provided with of the valve body (1) is let out for blocking 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 the 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): the second spool (7) by the second flap (71), the second valve rod (72) and cannula portion (73) successively It connects and composes, second flap (71) is set to first flap (52) back to the side of spring base (4), and outer diameter is greater than institute State the bore of relief hole (51), second valve rod (72) be fixed on the second flap (71) center and pass through 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 Overflow ducts (721), described sleeve pipe portion (73) are equipped with the liquid pass hole (731) being connected to the overflow ducts (721), the set Pipe portion (73) movable set is between first spring (6) and first valve rod (53), spring base (4) center Equipped with the mounting hole for being suitable for installing described sleeve pipe portion (73), the second spring (8) is installed in first spring (6) and first Between valve rod (53), both ends offset with the first flap (52) and described sleeve pipe portion (73) second end (733) respectively, described Under the action of two springs (8) second flap (71) and the first flap (52) it is in sealing contact by relief hole (51) block, it is described Cannula portion (73) and first valve rod (53) are connected by position limiting structure activity limit.
- 4. the check valve of decompression function built in band according to claim 3, which is characterized in that the position limiting structure includes 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 |
|---|---|---|---|
| CN201820173482.4U CN208204110U (en) | 2018-01-31 | 2018-01-31 | The check valve of decompression function built in a kind of band |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820173482.4U CN208204110U (en) | 2018-01-31 | 2018-01-31 | The check valve of decompression function built in a kind of band |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208204110U true CN208204110U (en) | 2018-12-07 |
Family
ID=64534629
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820173482.4U Expired - Fee Related CN208204110U (en) | 2018-01-31 | 2018-01-31 | The check valve of decompression function built in a kind of band |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208204110U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108131473A (en) * | 2018-01-31 | 2018-06-08 | 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 |
| CN111963540A (en) * | 2020-07-21 | 2020-11-20 | 江苏永昊高强度螺栓有限公司 | Self-adjusting pressure relief type bolt structure |
| CN114370515A (en) * | 2021-12-28 | 2022-04-19 | 浙江银轮机械股份有限公司 | Flow passage plate structure |
-
2018
- 2018-01-31 CN CN201820173482.4U patent/CN208204110U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108131473A (en) * | 2018-01-31 | 2018-06-08 | 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 |
| CN111963540A (en) * | 2020-07-21 | 2020-11-20 | 江苏永昊高强度螺栓有限公司 | Self-adjusting pressure relief type bolt structure |
| CN111963540B (en) * | 2020-07-21 | 2022-02-08 | 江苏永昊高强度螺栓有限公司 | Self-adjusting pressure relief type bolt structure |
| CN114370515A (en) * | 2021-12-28 | 2022-04-19 | 浙江银轮机械股份有限公司 | Flow passage plate structure |
| CN114370515B (en) * | 2021-12-28 | 2024-05-28 | 浙江银轮机械股份有限公司 | Flow passage plate structure |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20181207 Termination date: 20210131 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |