CN206845936U - The stop valve of soft closure - Google Patents
The stop valve of soft closure Download PDFInfo
- Publication number
- CN206845936U CN206845936U CN201720549399.8U CN201720549399U CN206845936U CN 206845936 U CN206845936 U CN 206845936U CN 201720549399 U CN201720549399 U CN 201720549399U CN 206845936 U CN206845936 U CN 206845936U
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- sealing surface
- flap
- valve
- seat portion
- seat
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Abstract
It the utility model is related to stop valve.A kind of stop valve of soft closure, including the valve seat provided with runner, flap and the valve rod for being connected to flap, valve seat is provided with seat portion sealing surface, flap is provided with flap portion sealing surface, flap portion sealing surface is plane, coordinate between valve rod and flap for gap, valve seat is provided with seat portion bulge loop, runner is located in the space that seat portion bulge loop is surrounded, seat portion sealing surface is the planar annular being arranged on the end face of seat portion bulge loop, valve seat is provided with the correction spring of the depth of parallelism of at least three correction flap portion's sealing surfaces and seat portion sealing surface, correction spring is stage clip, correction spring exceeds seat portion sealing surface towards direction where flap, the inside for the polygon that the center line of seat portion sealing surface is surrounded positioned at correction spring.There is the utility model depth of parallelism when being assembled to sealing surface to require the advantages of low, solve the problems, such as that the stop valve that existing plane coordinates requires high to the sealing surface assembling depth of parallelism.
Description
Technical field
It the utility model is related to stop valve, more particularly to a kind of stop valve of soft closure.
Background technology
Stop valve is also known as pipe valve valve, belongs to forced seal formula valve, so when valve is closed, it is necessary to applies to flap and presses
Power, do not leaked with forced seal face.When medium is by entering valve below flap, the resistance that overcomes required for operating physical force is valve
The frictional force of bar and filler and the thrust as caused by the pressure of medium, the power of closing valve is bigger than the power of valve opening door, so valve rod
Diameter it is big, the failure of valve rod bending otherwise can occur.It is divided into three kinds by connected mode：Flange connection, screwed connection, welding
Connection.After the valve of self sealss occurs, the medium flow direction of stop valve just changes by entering valve pocket above flap, at this moment in medium pressure
Under power effect, the power of closing valve is small, and the power of valve opening door is big, and the diameter of valve rod can be reduced correspondingly.Meanwhile acted in medium
Under, the valve of this form is also tighter.China's valve " three change to " once provided, the flow direction of stop valve, without exception using from upper and
Under.When stop valve is opened, the Lift of flap, flows have reached maximum when being the 25%~30% of nominal diameter, represent valve
Fully open position is reached.So the fully open position of stop valve, should be determined by the stroke of flap.
China Patent No. be CN201420098291.8, authorized announcement date be well CN203784315U, application the day for announcing
For August in 2014 20 days, entitled《Angle stop valves》Patent document in i.e. disclose a kind of existing stop valve.It is existing
The sealing of stop valve is realized by all setting the sealing surface of cooperation on flap and valve seat, and sealing surface has a kind of mode for example right
Than being the conical surface as disclosed in file, the fit system requires to keep same when seat portion sealing surface and flap portion sealing surface assemble
Axle, poor sealing otherwise can be produced, therefore the assembling axiality to sealing surface requires high；Another kind is to coordinate to carry out by plane
Sealing, mode requires keeping parallelism when seat portion sealing surface and flap portion sealing surface assemble, otherwise can also produce sealing not in this
It is good, therefore the assembling depth of parallelism to sealing surface requires high.
Utility model content
The utility model provides a kind of plane and coordinates depth of parallelism when being assembled when being sealed to sealing surface to require low
The stop valve of the soft closure of the depth of parallelism, solve the stop valve that existing plane coordinates and high is required to the sealing surface assembling depth of parallelism
The problem of.
Above technical problem is that solved by following technical proposal：A kind of stop valve of soft closure, including provided with stream
Valve seat, flap and the valve rod for being connected to flap in road, the valve seat are provided with seat portion sealing surface, and the flap is provided with the valve
The flap portion sealing surface that portions sealing surface coordinates, it is characterised in that flap portion sealing surface is plane, between valve rod and flap
Coordinate for gap, valve seat is provided with seat portion bulge loop, and runner is located in the space that seat portion bulge loop is surrounded, and seat portion sealing surface is
The planar annular being arranged on the end face of seat portion bulge loop, the valve seat are provided with least three correction flap portion's sealing surfaces and valve
The correction spring of the depth of parallelism of portions sealing surface, the correction spring is stage clip, and the correction spring surpasses towards direction where flap
Go out the seat portion sealing surface, the center line of the seat portion sealing surface is positioned at the interior of the polygon corrected spring and surrounded
Portion.The technical program is by the way that valve rod and flap design are coordinated for gap so that even if flap portion sealing surface and valve seat during assembling
Portion's sealing surface is not parallel, also can during closing up centered on valve rod string pendulum move flap it is same to be adjusted to flap portion sealing surface
Seat portion sealing surface is parallel.If can now there is flap portion sealing surface and seat portion sealing surface is first contacted with side and rigid connection is touched
The moment angle of two sealing surfaces is larger, can then produce the drag effect flowed through due to fluid leads to not to be adjusted to sealing surface to put down
OK（The phenomenon that can not be fully come together can be produced）, correction spring is further set for this technical program so that valve
Valve is before same valve seat rigid contact（Before abutting together）Generate correction in advance, so that sealing surface will not produce when abutting
The phenomenon that over-tilting can not close up produces.
Preferably, the correction spring is located at the periphery of the bulge loop.Be easy to seat portion sealing surface being made to it is smaller,
And sealing surface usually requires to be surface-treated to improve wearability（Such as chromium plating）.The diminution of sealing surface is advantageous to the drop of cost
It is low.
Preferably, the flap is provided with flap portion bulge loop, flap portion sealing surface is located at flap portion bulge loop
Planar annular on end face.
Preferably, the hardness of flap portion sealing surface is more than the hardness of flap portion bulge loop.
Preferably, the hardness of the seat portion sealing surface is more than the hardness of the seat portion bulge loop.
Preferably, all correction springs are equal beyond the distance of the seat portion sealing surface.When can improve correction
Reliability.The height that spring is corrected beyond seat portion sealing surface is although unequal（Range difference be present beyond distance）But
It is that the range difference causes flap portion sealing surface after correcting spring correction not influence valve with caused angle between seat portion sealing surface
Valve and valve seat close up when being sealed, and the range difference belongs to the equal equivalent technical solutions of the technical program.
The utility model tool has the advantage that：Depth of parallelism requirement when flap and valve seat assembling can be reduced.
Brief description of the drawings
Fig. 1 is schematic diagram of the present utility model.
In figure：Valve seat 11, runner 111, seat portion bulge loop 112, seat portion sealing surface 113, annular groove 114, flap 12, valve
Lever attachment hole 121, flap portion bulge loop 122, flap portion sealing surface 123, valve rod 13, correction spring 14.
Embodiment
The utility model is further described with embodiment below in conjunction with the accompanying drawings.
Referring to Fig. 1, a kind of stop valve of soft closure, including provided with valve seat 11, flap 12 and valve rod 13.
Valve seat 11 is provided with runner 111.Valve seat 11 is provided with seat portion bulge loop 112.Runner 111 is located at the institute of seat portion bulge loop 112
In the space surrounded.The end face of seat portion bulge loop 112 forms seat portion sealing surface 113 by Surface hardening treatment.Seat portion is close
Front cover 113 is planar annular.The hardness of seat portion sealing surface 113 is more than the hardness of seat portion bulge loop 112.Seat portion bulge loop 112
Annular groove 114 is formed between the wall of valve seat 11.Correction spring 14 is provided with annular groove 114.Correction spring 14 is located at seat portion
The periphery of bulge loop 112.Correction spring 14 has four.Circumference of four correction springs 14 along seat portion bulge loop 112 is uniformly distributed.Valve
The center line of portions sealing surface 113 seat portion bulge loop in the inside for correcting the polygon that spring 14 is surrounded, the present embodiment
112 and 111 same center line of runner.Correction spring 14 exceeds seat portion sealing surface 113 towards direction where flap.All correction bullets
Spring is equal beyond the distance of seat portion sealing surface.
Flap 12 is provided with valve rod connecting hole 121.Flap 12 is provided with flap portion bulge loop 122.The end face warp of flap portion bulge loop 122
Cross Surface hardening treatment and form flap portion sealing surface 123.The hardness of flap portion sealing surface 123 is more than the hard of flap portion bulge loop 122
Degree.
Valve rod 13 is connected in valve rod connecting hole 121.Coordinate between valve rod 13 and valve rod connecting hole 121 for gap.In order to
Realize that the power pulled up by valve rod realizes valve opening, can gib head be now set on valve rod, same hook is set in valve rod connecting hole 121
The connecting hole that head coordinates.
When closing valve, driving flap 12 moves down, and flap first touches correction spring 14, and correction spring 14 carries out school to flap
Just so that flap portion sealing surface 123 and seat portion sealing surface 113 are substantially parallel, and flap further moves down so that flap portion seals
Sealing is realized together with face 123 abuts with seat portion sealing surface 113, so as to realize conjunction valve.
Claims (6)
1. a kind of stop valve of soft closure, including the valve seat provided with runner, flap and the valve rod for being connected to flap, the valve seat
Provided with seat portion sealing surface, the flap is provided with the flap portion sealing surface coordinated with the seat portion sealing surface, it is characterised in that
Flap portion sealing surface is plane, is coordinated between the valve rod and the flap for gap, and it is convex that the valve seat is provided with seat portion
Ring, the runner are located in the space that the seat portion bulge loop is surrounded, and the seat portion sealing surface is to be arranged on the valve seat
Planar annular on the end face of portion's bulge loop, the valve seat are provided with least three correction flap portion's sealing surfaces and seat portion sealing surface
The depth of parallelism correction spring, it is described correction spring be stage clip, it is described correction spring towards flap place direction exceed the valve seat
Portion's sealing surface, the center line of the seat portion sealing surface is positioned at the inside for correcting the polygon that spring is surrounded.
2. the stop valve of soft closure according to claim 1, it is characterised in that the correction spring is located at the bulge loop
Periphery.
3. the stop valve of soft closure according to claim 1 or 2, it is characterised in that it is convex that the flap is provided with flap portion
Ring, flap portion sealing surface are located at the planar annular on the end face of flap portion bulge loop.
4. the stop valve of soft closure according to claim 3, it is characterised in that the hardness of flap portion sealing surface is big
In the hardness of flap portion bulge loop.
5. the stop valve of soft closure according to claim 1 or 2, it is characterised in that the seat portion sealing surface it is hard
Hardness of the degree more than the seat portion bulge loop.
6. the stop valve of soft closure according to claim 1 or 2, it is characterised in that all correction springs exceed institute
The distance for stating seat portion sealing surface is equal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720549399.8U CN206845936U (en) | 2017-05-17 | 2017-05-17 | The stop valve of soft closure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720549399.8U CN206845936U (en) | 2017-05-17 | 2017-05-17 | The stop valve of soft closure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206845936U true CN206845936U (en) | 2018-01-05 |
Family
ID=60796337
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720549399.8U Active CN206845936U (en) | 2017-05-17 | 2017-05-17 | The stop valve of soft closure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206845936U (en) |
-
2017
- 2017-05-17 CN CN201720549399.8U patent/CN206845936U/en active Active
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|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |