CN205781083U - A kind of double safety valve with flange - Google Patents
A kind of double safety valve with flange Download PDFInfo
- Publication number
- CN205781083U CN205781083U CN201620782126.3U CN201620782126U CN205781083U CN 205781083 U CN205781083 U CN 205781083U CN 201620782126 U CN201620782126 U CN 201620782126U CN 205781083 U CN205781083 U CN 205781083U
- Authority
- CN
- China
- Prior art keywords
- connects
- flange
- valve
- flap
- valve barrel
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- Safety Valves (AREA)
Abstract
A kind of double safety valve with flange, is made up of bonnet, adjusting nut, adjusting screw rod, spring cavity, valve rod, spring, fairlead, flap, back pressure adjusting sleeve, right valve barrel, lower flange, expansion joint, left valve barrel, upper flange.Described bonnet interior is provided with adjusting nut, and adjusting nut connects adjusting screw rod, and described adjusting screw rod connects valve rod, and stem exterior ring set has spring, being provided with spring cavity outside described spring, and spring cavity bottom is provided with fairlead, described fairlead connects flap, and flap connects back pressure adjusting sleeve, connecting right valve barrel bottom described flap, and right valve barrel connects left valve barrel, described left valve barrel connects upper flange, and lower flange is set bottom left valve barrel, described lower flange connects expansion joint.
Description
Technical field
This utility model relates to valve technology field, a kind of double safety valve with flange.
Background technology
Relief valve is a kind of valve the more commonly used in pipe control, and when normally working, the opening and closing element of relief valve is by outward
It is in normally off under power effect；When the pressure medium in equipment or pipeline increases to over setting, the opening and closing element of relief valve
Being in opening by under External Force Acting, in preventing pipeline or equipment by discharge medium outside system, pressure medium exceedes rule
The Special valve of fixed number value, currently used relief valve exists that structure is complex, sealing property is not enough, at the sealing surface of flap
Reason is tight not, and valve body fastens not with outside junction, adjusts the defects such as convenient not.
Utility model content
The purpose of this utility model is to provide a kind of double safety valve with flange, to solve in above-mentioned background technology
The problem proposed.
This utility model adopts the following technical scheme that
A kind of double safety valve with flange, by bonnet, adjusting nut, adjusting screw rod, spring cavity, valve rod, spring,
Fairlead, flap, back pressure adjusting sleeve, right valve barrel, lower flange, expansion joint, left valve barrel, upper flange form.
Described bonnet interior is provided with adjusting nut, and adjusting nut connects adjusting screw rod.
Described adjusting screw rod connects valve rod, and stem exterior ring set has spring.
It is provided with spring cavity outside described spring, and spring cavity bottom is provided with fairlead.
Described fairlead connects flap, and flap connects back pressure adjusting sleeve.
Connect right valve barrel bottom described flap, and right valve barrel connects left valve barrel.
Bottom described left valve barrel connection upper flange, and left valve barrel, lower flange is set.
Described lower flange connects expansion joint.
Preferably, described flap lateral section is trapezoidal, and flap uses thermoelastic structure.
Preferably, between described left valve barrel and right valve barrel, employing is welded to connect.
Preferably, described adjusting screw rod is threaded connection valve rod.
Preferably, described upper flange is provided with two, and the entrance of upper flange is all communicated to lower flange outlet, and lower flange outlet
Place is nozzle type.
Compared with prior art, the beneficial effects of the utility model are: this double safety valve, and simple in construction is easy to use,
And on relief valve, it is provided with adjusting nut, adjust the decrement of spring by adjusting adjusting nut so that valve can be more
Conveniently, set-pressure accurately is obtained rapidly；Lower flange exit uses nozzle type design so that when steam flows through exit
High flow velocities can be reached, thus increase emission factor, improve rate of discharge；Flap uses thermoelastic structure design, utilizes it
Under pressure medium, produce small deformation, improve sealability；Increase in exit and have expansion joint, it is possible to the effectively row of preventing
The thermal expansion of heat pipe brings unnecessary thermal stress to relief valve, improves the service life of relief valve.
Accompanying drawing explanation
Fig. 1 is this utility model structural representation.
In figure: 1. bonnet, 2. adjusting nut, 3. adjusting screw rod, 4. spring cavity, 5. valve rod, 6. spring, 7. fairlead,
8. flap, 9. back pressure adjusting sleeve, 10. right valve barrel, 11. lower flanges, 12. expansion joints, 13. left valve barrels, 14. upper flanges.
Detailed description of the invention
With detailed description of the invention, this utility model is described further below in conjunction with the accompanying drawings.
This utility model, as it is shown in figure 1, a kind of double safety valve with flange, by bonnet 1, adjusting nut 2, regulates spiral shell
Bar 3, spring cavity 4, valve rod 5, spring 6, fairlead 7, flap 8, back pressure adjusting sleeve 9, right valve barrel 10, lower flange 11, expansion joint
12, left valve barrel 13, upper flange 14 form.
Described bonnet 1 is internally provided with adjusting nut 2, and adjusting nut 2 connects adjusting screw rod 3.
Described adjusting screw rod 3 connects valve rod 5, and adjusting screw rod 3 is threaded connection valve rod 5 so that regulate more convenient, and
Valve rod 5 external rings is cased with spring 6.
Outside being provided with bottom spring cavity 4, and spring cavity 4 of described spring 6 is provided with fairlead 7.
Described fairlead 7 connects flap 8, and flap 8 connects back pressure adjusting sleeve 9, and described flap 8 lateral section is trapezoidal, and
Flap 8 uses thermoelastic structure, improves sealability.
Bottom described flap 8 connect right valve barrel 10, and right valve barrel 10 connect left valve barrel 13, left valve barrel 13 and right valve barrel 10 it
Between use and be welded to connect so that valve body structure more fastens.
Described left valve barrel 13 connects and arranges lower flange 11 bottom upper flange 14, and left valve barrel 13, and described upper flange 14 is provided with
Two, the entrance of upper flange 14 is all communicated to lower flange 11 and exports, and lower flange 11 exit is nozzle type, improves circulation speed
Degree.
Two upper flanges 14 in use, are respectively connecting to conduit entrance by this utility model, and lower flange 11 is connected to out
Mouth pipeline, notices during connection, the length of expansion joint 12 is the shortest, it is to avoid turn round, and delivery pipe and expansion joint 12 weight should not be made
Being used on relief valve, should be fixed on building, when air-flow enters left valve barrel 13 and right valve barrel 10, rotating adjusting nut 2 is adjusted
Saving adjusting screw rod 3, and then band ovable valve stem 5 rotates, valve rod 5 moves up and down in fairlead 7, thus opens the circulation of valve inner
Passage, can adjust the back pressure value of flap 8 by back pressure adjusting sleeve 9, and upper timing valve back pressure reduces, and lower timing valve back pressure carries
High.
Claims (4)
1. with a double safety valve for flange, by bonnet (1), adjusting nut (2), adjusting screw rod (3), spring cavity (4),
Valve rod (5), spring (6), fairlead (7), flap (8), back pressure adjusting sleeve (9), right valve barrel (10), lower flange (11), expansion joint
(12), left valve barrel (13), upper flange (14) composition, it is characterised in that: described bonnet (1) is internally provided with adjusting nut (2), and
Adjusting nut (2) connects adjusting screw rod (3), and described adjusting screw rod (3) connects valve rod (5), and valve rod (5) external rings is cased with spring
(6), the outside spring cavity (4) that is provided with of described spring (6), and spring cavity (4) bottom is provided with fairlead (7), described in lead
Connecting flap (8) to set (7), and flap (8) connects back pressure adjusting sleeve (9), described flap (8) bottom connects right valve barrel (10),
And right valve barrel (10) connects left valve barrel (13), described left valve barrel (13) connects upper flange (14), and left valve barrel (13) bottom is arranged
Lower flange (11), described lower flange (11) connects expansion joint (12).
A kind of double safety valve with flange the most according to claim 1, it is characterised in that: described flap (8) side is cut
Face is trapezoidal, and flap (8) uses thermoelastic structure.
A kind of double safety valve with flange the most according to claim 1, it is characterised in that: described adjusting screw rod (3)
It is threaded connection valve rod (5).
A kind of double safety valve with flange the most according to claim 1, it is characterised in that: described upper flange (14) sets
Having two, the entrance of upper flange (14) is all communicated to lower flange (11) outlet, and lower flange (11) exit is nozzle type.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620782126.3U CN205781083U (en) | 2016-07-15 | 2016-07-15 | A kind of double safety valve with flange |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620782126.3U CN205781083U (en) | 2016-07-15 | 2016-07-15 | A kind of double safety valve with flange |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205781083U true CN205781083U (en) | 2016-12-07 |
Family
ID=58120551
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620782126.3U Expired - Fee Related CN205781083U (en) | 2016-07-15 | 2016-07-15 | A kind of double safety valve with flange |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205781083U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107299890A (en) * | 2017-07-06 | 2017-10-27 | 浙江超超安全阀制造有限公司 | A kind of petrol and diesel oil power combination valve |
| CN110185825A (en) * | 2019-05-29 | 2019-08-30 | 河南航天液压气动技术有限公司 | Double safety valve |
-
2016
- 2016-07-15 CN CN201620782126.3U patent/CN205781083U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107299890A (en) * | 2017-07-06 | 2017-10-27 | 浙江超超安全阀制造有限公司 | A kind of petrol and diesel oil power combination valve |
| CN110185825A (en) * | 2019-05-29 | 2019-08-30 | 河南航天液压气动技术有限公司 | Double safety valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20161207 Termination date: 20170715 |