CN206904306U - A kind of swing type low temperature check-valves - Google Patents
A kind of swing type low temperature check-valves Download PDFInfo
- Publication number
- CN206904306U CN206904306U CN201720658348.9U CN201720658348U CN206904306U CN 206904306 U CN206904306 U CN 206904306U CN 201720658348 U CN201720658348 U CN 201720658348U CN 206904306 U CN206904306 U CN 206904306U
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- flap
- pressing plate
- boss
- bonnet
- sealing ring
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- Lift Valve (AREA)
Abstract
The utility model discloses a kind of swing type low temperature check-valves, including valve body, flap, bonnet, sealing ring.The Vehicle Processing of flap both ends has pressing plate boss and flap boss, and pressing plate boss and flap boss front portion are helicitic texture.Flap, which is got on the bus, concave mouth, sealing ring and flap pressing plate are loop configuration, sealing ring coordinates through pressing plate boss with concave mouth to be arranged on flap, flap pressing plate is pressed on sealing ring through pressing plate boss, again by the screw thread on panel nut precession pressing plate boss, flap pressing plate is tightly pressed against on sealing ring and is allowed to be fixed on flap.Sealing ring is made using cryogenic material polytetrafluoroethylene.The sealing property and stability in use of valve are improved to the utility model effect, and is processed in process of production simple, easy to assembly.
Description
Technical field
The utility model belongs to valving technical field, and in particular to a kind of swing type low temperature check-valves.
Background technology
At present, low temperature check-valves one kind of in the market main flow is lifting structure check-valves, the flap of lift check valve
On valve body upper valve base sealing surface, this structure valve is in addition to flap can be lifted freely, and remainder is such as stop valve one
Sample, Fluid pressure make flap be carried away from sealing surface of seat, and medium back flow causes flap to fall back on valve seat, and cut off flowing.
The Structures at Low Temperature check-valves inlays the form of rubber blanket or rubber ring on flap, so as to suitable for worst cold case.Another kind is
Swing type structure check-valves, the structure have a linkage, and flap is freely leaned against on inclined valve base surface, and opening and closing element is by being situated between
Mass flow is dynamic to be voluntarily turned on and off, and the Structures at Low Temperature check-valves inlays sealing ring or O-ring to be applied to low temperature work on flap
Condition.But the low temperature check-valves of both common structures mainly has following shortcoming：
1. fluid is narrow by the passage of lift low temperature check-valves, therefore is stopped by the pressure drop of the structure than swing type
It is big to return valve；
2. lift low temperature check-valves flap slides along valve body vertical center line, can be only installed on horizontal pipe, and
And need to be oriented to and guide flap to slide up and down, requirement on machining accuracy is higher；
3. swing type low temperature check-valves flap inlays O-ring or sealing ring, O-ring groove or sealing ring need to be processed on flap
Groove, mounting O-shaped rings or sealing ring are using interference fit, it is desirable to which requirement on machining accuracy is high, and it is difficult to assemble cooperation；Valve uses
During interference fit seal circle sealing it is unstable.
Utility model content
For the above-mentioned deficiency present in prior art, the technical problems to be solved in the utility model is to provide a kind of new
Swing type low temperature check-valves, it can solve the problem that the sealing property and stability in use for being effectively improved valve, and in life
Processed during production simple, easy to assembly.
In order to solve the above-mentioned technical problem, the utility model adopts the following technical scheme that：A kind of swing type low temperature check-valves,
Including valve body, flap, flap pressing plate, sealing ring, bonnet.Valve body both ends and top are hatch frame, and medium flows into from one end, separately
Outer one end outflow, upper opening port is fluted, and pad is provided with groove and is used to seal.Bonnet is that disk carries extension shape
Shape, bonnet are arranged on valve body upper opening via bonnet stud and bonnet nut.Rocking bar is hinged by bearing pin and bonnet extension,
Rocking bar can rotate freely along bearing pin center in certain angle.Flap is that disk both ends carry ledge structure, and flap diameter compares valve body
Upper medium inlet diameter is big, and flap includes concave mouth, boss, flap boss, and the Vehicle Processing of flap both ends has pressing plate boss and flap
Boss, pressing plate boss and flap boss front portion are helicitic texture.Flap, which is got on the bus, concave mouth, and sealing ring is annular with flap pressing plate
Structure, sealing ring are arranged on through pressing plate boss in the concave mouth of flap, and flap pressing plate is pressed on sealing ring, then by panel nut
Screw thread on precession pressing plate boss, flap pressing plate is tightly pressed against on sealing ring and is allowed to be fixed on flap, and flap nut is by valve
Valve is fixed on rocking bar.When medium flows into from valve body inlet end, under pressure medium, flap rotarily opens, and medium smoothly flows out；
When medium flows back from the port of export, under pressure medium, flap rotary closing, sealing ring and valve body contact, medium back flow are obstructed.
Further, after the completion of panel nut assembling, by the spot welding of panel nut end face, prevent panel nut from loosening.
Further, sealing ring is made using cryogenic material polytetrafluoroethylene.
Further, bonnet stud has set, bonnet stud more equal along bonnet central ring with bonnet nut with bonnet nut
Even arrangement.
After said structure, each design of part of valve is simple, and requirement on machining accuracy is not high, and difficulty of processing reduces, and
Sealing property is stable, easy for installation.
Brief description of the drawings
Fig. 1 is the utility model cut-open view of final assembly.
Fig. 2 is the utility model flap sectional view.
In figure：1 valve body, 2 sealing rings, 3 flap pressing plates, 4 panel nuts, 5 flaps, 51 concave mouths, 52 pressing plate boss, 53 valves
Valve boss, 6 flap nuts, 7 rocking bars, 8 bearing pins, 9 bonnets, 10 pads, 11 bonnet studs, 12 bonnet nuts.
Embodiment
Particular content of the present utility model is described in detail with specific embodiment below in conjunction with the accompanying drawings.
As shown in Figure 1 and Figure 2, a kind of swing type low temperature check-valves, including valve body 1, flap 5, flap pressing plate 3, sealing ring 2,
Bonnet 9；The both ends of valve body 1 and top are hatch frame, and medium flows into from one end, and other end outflow, upper opening port has recessed
Groove, pad 10 is installed in groove and is used to seal；Bonnet 9 is that disk carry extension shape, bonnet 9 via bonnet stud 11 and
Bonnet nut 12 is arranged on the upper opening of valve body 1；Rocking bar 7 is hinged by bearing pin 8 and the extension of bonnet 9, and rocking bar 7 can be along bearing pin 8
Center rotates freely in certain angle；Flap 5 is that disk both ends carry ledge structure, and the diameter of flap 5 is than medium inlet on valve body 1
Diameter is big, and flap (5) includes concave mouth (51), boss (52), flap boss (53), and the both ends Vehicle Processing of flap 5 has pressing plate boss
52 and flap boss 53, pressing plate boss 52 and the front portion of flap boss 53 are helicitic texture；Flap 5, which is got on the bus, concave mouth 51, sealing
Circle 2 is loop configuration with flap pressing plate 3, and sealing ring 2 is arranged on through pressing plate boss 52 in the concave mouth (51) of flap (5), valve
Valve pressing plate (3) is pressed on sealing ring (2), then by the screw thread on the precession pressing plate boss 52 of panel nut 4, by flap pressing plate 3 tightly
It is pressed on sealing ring 2 and is allowed to be fixed on flap 5, flap 5 is fixed on rocking bar 7 by the precession flap boss 53 of flap nut 6；When
Medium flows into from the arrival end of valve body 1, and under pressure medium, flap 5 rotarily opens, and medium smoothly flows out；When medium is from the port of export
Backflow, under pressure medium, the rotary closing of flap 5, sealing ring 2 is contacted with valve body 1, and medium back flow is obstructed.
In actual applications, after the completion of the panel nut 4 is assembled, by the end face spot welding of panel nut 4, panel nut is prevented
4 loosen.
In actual applications, the sealing ring 2 is made using cryogenic material polytetrafluoroethylene.
In actual applications, the bonnet stud 11 has more sets, bonnet stud 11 and bonnet nut 12 with bonnet nut 12
It is evenly arranged along the center ring of bonnet 9.
In summary, the utility model overcomes that Conventional cryogenic check valve passage is narrow, pressure drop is big, installation is limited etc. and asked
Topic.The utility model processing simultaneously is simple, easy to assembly, sealing property is stable.
General principle of the present utility model, main features and advantages have been shown and described above.The technical staff of the industry
It should be appreciated that above-mentioned embodiment, only to illustrate technical concepts and features of the present utility model, its object is to allow be familiar with this
The personage of technology can understand content of the present utility model and be carried out, and protection model of the present utility model can not be limited with this
Enclose, all equivalent change or modifications made according to the utility model Spirit Essence, should all cover in protection model of the present utility model
In enclosing.
Claims (4)
1. a kind of swing type low temperature check-valves, including valve body (1), flap (5), flap pressing plate (3), sealing ring (2), bonnet (9)；
Valve body (1) both ends and top are hatch frame, and medium flows into from one end, and other end outflow, upper opening port is fluted, recessed
Pad (10) is installed in groove to be used to seal；Bonnet (9) is that disk carries extension shape, and bonnet (9) is via bonnet stud
(11) it is arranged on valve body (1) upper opening with bonnet nut (12)；Rocking bar (7) is cut with scissors by bearing pin (8) and bonnet (9) extension
Connect, rocking bar (7) can rotate freely along bearing pin (8) center in certain angle；Flap (5) is that disk both ends carry ledge structure, valve
Valve (5) diameter is bigger than medium inlet diameter on valve body (1), and flap (5) includes concave mouth (51), boss (52), flap boss
(53), flap (5) both ends Vehicle Processing has pressing plate boss (52) and flap boss (53), pressing plate boss (52) and flap boss (53)
Front portion is helicitic texture；Flap (5), which is got on the bus, concave mouth (51), and sealing ring (2) and flap pressing plate (3) are loop configuration, sealing
(2) are enclosed to be arranged on through pressing plate boss (52) in the concave mouth (51) of flap (5), flap pressing plate (3) is pressed on sealing ring (2),
Again by the screw thread on panel nut (4) precession pressing plate boss (52), flap pressing plate (3) is tightly pressed against on sealing ring (2) and is allowed to
It is fixed on flap (5), flap (5) is fixed on rocking bar (7) by flap nut (6) precession flap boss (53).
A kind of 2. swing type low temperature check-valves according to claim 1, it is characterised in that：Panel nut (4) assembling
After the completion of, by panel nut (4) end face spot welding, prevent panel nut (4) from loosening.
A kind of 3. swing type low temperature check-valves according to claim 1, it is characterised in that：The sealing ring (2) uses low
Adiabator polytetrafluoroethylene is made.
A kind of 4. swing type low temperature check-valves according to claim 1, it is characterised in that：The bonnet stud (11) and valve
Box nut (12) has more sets, and bonnet stud (11) is evenly arranged with bonnet nut (12) along bonnet (9) center ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720658348.9U CN206904306U (en) | 2017-06-08 | 2017-06-08 | A kind of swing type low temperature check-valves |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720658348.9U CN206904306U (en) | 2017-06-08 | 2017-06-08 | A kind of swing type low temperature check-valves |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206904306U true CN206904306U (en) | 2018-01-19 |
Family
ID=61287258
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720658348.9U Active CN206904306U (en) | 2017-06-08 | 2017-06-08 | A kind of swing type low temperature check-valves |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206904306U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108953694A (en) * | 2018-06-13 | 2018-12-07 | 江苏圣泰阀门有限公司 | Nuclear power check-valves |
| CN109210213A (en) * | 2018-10-10 | 2019-01-15 | 大连船用阀门有限公司 | It is a kind of to seal auxiliary structure from the valve metal that pressure compensates using thin slice Light deformation |
| CN110726000A (en) * | 2019-09-25 | 2020-01-24 | 江苏辰龙阀门制造有限公司 | High-temperature steam valve |
| CN112648406A (en) * | 2020-12-21 | 2021-04-13 | 浙江宣达环境科技股份有限公司 | Wear-resistant turnover plate reversing valve |
-
2017
- 2017-06-08 CN CN201720658348.9U patent/CN206904306U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108953694A (en) * | 2018-06-13 | 2018-12-07 | 江苏圣泰阀门有限公司 | Nuclear power check-valves |
| CN109210213A (en) * | 2018-10-10 | 2019-01-15 | 大连船用阀门有限公司 | It is a kind of to seal auxiliary structure from the valve metal that pressure compensates using thin slice Light deformation |
| CN110726000A (en) * | 2019-09-25 | 2020-01-24 | 江苏辰龙阀门制造有限公司 | High-temperature steam valve |
| CN112648406A (en) * | 2020-12-21 | 2021-04-13 | 浙江宣达环境科技股份有限公司 | Wear-resistant turnover plate reversing valve |
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