CN207750506U - High temperature resistant elastic packing double eccentric butterfly valve - Google Patents
High temperature resistant elastic packing double eccentric butterfly valve Download PDFInfo
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- CN207750506U CN207750506U CN201820048432.3U CN201820048432U CN207750506U CN 207750506 U CN207750506 U CN 207750506U CN 201820048432 U CN201820048432 U CN 201820048432U CN 207750506 U CN207750506 U CN 207750506U
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- valve
- elastic packing
- sealing
- double eccentric
- valve body
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Abstract
A kind of high temperature resistant elastic packing double eccentric butterfly valve.It is characterized in that：The valve component includes elastic packing valve seat, valve base sealing trim ring；Elastic packing valve seat is fixedly mounted by valve base sealing trim ring, and is coordinated with valve body, the sealing of valve base sealing trim ring, and the elastomeric seal portions of bending are formed on elastic packing valve seat, and elastomeric seal portions can be sealed with centrum sealing surface to be coordinated；The double eccentric settings of the dish plate.It the advantage is that elastic-sealing-valve seats against its own elastic force and provides the pretightning force sealed with centrum sealing surface, ensure positive pressure-bearing, when reverse pressure-bearing, directly provides active force by medium, squeeze elastomeric seal portions, ensure sealing effect, medium power is bigger, and sealing effect is more preferable, compared with conventional valve seat construction, part is less, easier for installation, and cost is also lower；The double eccentric settings of dish plate simultaneously, the unnecessary transition for significantly eliminating dish plate and elastic packing valve seat squeeze, scrape phenomenon, mitigate and open resistance square, reduce abrasion, improve service life.
Description
Technical field
The utility model is related to a kind of butterfly valves, are specifically related to a kind of high temperature resistant elastic packing double eccentric butterfly valve.
Background technology
Butterfly valve is called flap valve, is a kind of regulating valve simple in structure, refers to closure member（Flap or butterfly plate）For disk, enclose
It is rotated around valve shaft to reach a kind of valve of open and close.
But previous metal hard-sealing butterfly valve its sealing principle category position seals construction, the i.e. sealing surface of butterfly plate and valve seat are
Full connected squeezes the flexible deformation caused by valve seat by butterfly plate and generates sealing effect, therefore very high to closed position requirement, especially
Metal seat valve, bearing capacity is low, especially valve forward direction when ensure to seal by the position of valve plate and valve seat.
Certainly, also there is the combination using spring or disc spring and valve seat, valve seat, which floats, to be arranged, and one is provided by spring or disc spring
Pretightning force, ensures positive pressure-bearing, when reverse pressure-bearing, pushes valve seat to ensure that the sealing of itself and dish plate coordinates by medium.But this
Kind structure, part is various, installation trouble, and cost is again high.
Utility model content
In order to overcome the shortcomings of that background technology, the utility model provide a kind of high temperature resistant elastic packing double eccentric butterfly valve.
Technical solution used by the utility model：A kind of high temperature resistant elastic packing double eccentric butterfly valve, including valve body, upper valve
Bar, lower valve rod, valve component, bottom cover, driving executive module；It is described to can be rotatably set in valve body by lower valve rod, it is described
Upper valve rod one end connects dish plate, and the other end stretches out valve body connection driving executive module；The bottom cover is arranged in body base, and with
Valve seal coordinates；Centrum sealing surface is formed on described；The valve component includes elastic packing valve seat, valve base sealing pressure
Circle；The valve base sealing trim ring is connect by bolt with valve body, and the elastic packing valve seat is fixed by valve base sealing trim ring pacifies
Dress, and coordinate with valve body, the sealing of valve base sealing trim ring, the elastomeric seal portions of bending are formed on the elastic packing valve seat, and
The elastomeric seal portions can be sealed with centrum sealing surface to be coordinated；Double eccentric settings, the revolution axle center deviate center and
Deviate centrum sealing surface center.
Expansive graphite sealing ring is equipped between the valve base sealing trim ring and elastic packing valve seat.
The valve base sealing trim ring inner ring is formed with a circle positioning retainer ring, the bullet of the positioning retainer ring and elastic packing valve seat
Property sealing is corresponding.
It is equipped with stuffing-box between the valve body and upper valve rod, axle sleeve, Packing seat, filler group are sequentially loaded into the stuffing-box
Part, gland, the gland is connected by locking nut, screw rod and valve body, and compresses filler assembly.
Gasket seal is equipped between the bottom cover and body base.
The utility model has the beneficial effects that：Using above scheme, elastic packing valve seat is in the elastic packing of bending structure
Portion can preferably realize sealing cooperation with the centrum sealing surface of dish plate, and elastic metallic material is used to be made, by its own elasticity
Power provides a pretightning force sealed with the centrum sealing surface of sphere, ensures front pressure-bearing, when reverse pressure-bearing, is directly carried by medium
For an active force, elastomeric seal portions are squeezed, ensure that its sealing effect between the centrum sealing surface of dish plate, medium power are got over
Greatly, sealing effect is more preferable, and for above structure compared with conventional valve seat construction, part is less, easier for installation, and cost is also more
It is low；The double eccentric settings of dish plate simultaneously so that elastic packing valve seat can be detached from when valve opening rapidly, significantly eliminate dish plate and bullet
Property seal valve seat unnecessary transition squeeze, scrape phenomenon, mitigate open resistance square, reduce abrasion, improve service life.
Description of the drawings
Fig. 1 is the utility model embodiment structural schematic diagram.
Fig. 2 is the enlarged diagram at A in Fig. 1.
1- valve bodies in figure, 2- upper valve rods, 3- lower valve rods, 4- dish plates, 41- centrum sealing surfaces, 5- valve components, 51- elasticity
Seal valve seat, 511- elastomeric seal portions, 52- valve base sealing trim rings, 521- positioning retainer rings, 53- bolts, 54- expansive graphite sealings
Ring, 6- bottom covers, 7- drive executive module, 8- axle sleeves, 9- Packing seats, 10- filler assemblies, 11- glands, 12- gasket seals.
Specific implementation mode
The utility model embodiment is described further below in conjunction with the accompanying drawings：
As shown, a kind of high temperature resistant elastic packing double eccentric butterfly valve, including valve body 1, upper valve rod 2, lower valve rod 3, dish plate
4, valve component 5, bottom cover 6, driving executive module 7；The dish plate 4 can be rotatably set in by lower valve rod 3 in valve body 1, institute
2 one end of upper valve rod connection dish plate 4 is stated, the other end stretches out the connection driving executive module 7 of valve body 1；The bottom cover 6 is arranged in valve body 1
Bottom, and seal and coordinate with valve body 1；It is formed with centrum sealing surface 41 on the dish plate 4；The valve component 5 includes that elasticity is close
Seal valve seat 51, valve base sealing trim ring 52；The valve base sealing trim ring 52 is connect by bolt 53 with valve body 1, the elastic packing
Valve seat 51 is fixedly mounted by valve base sealing trim ring 52, and is coordinated with valve body 1, the sealing of valve base sealing trim ring 52, and the elasticity is close
The elastomeric seal portions 511 of bending are formed on envelope valve seat 51, and the elastomeric seal portions 511 can seal with centrum sealing surface 41 and match
It closes；The revolution axle center of 4 pairs of eccentric settings of the dish plate, the dish plate 4 deviates center and deviates 41 center of centrum sealing surface.
Elastic packing valve seat 51 can be preferably real with the centrum sealing surface of dish plate 41 in the elastomeric seal portions 511 of bending structure
Now sealing cooperation, uses elastic metallic material to be made, and the centrum sealing surface 41 of one and sphere 1 are provided by its own elastic force
The pretightning force of sealing, ensures positive pressure-bearing, when reverse pressure-bearing, directly provides an active force by medium, squeezes elastomeric seal portions
511, ensure its sealing effect between the centrum sealing surface of dish plate, medium power is bigger, and sealing effect is more preferable.
Above structure is compared with conventional valve seat construction, and part is less, easier for installation, and cost is also lower.
The double eccentric settings of dish plate simultaneously so that elastic packing valve seat can be detached from when valve opening rapidly, significantly eliminate dish
The unnecessary transition of plate and elastic packing valve seat squeezes, scrapes phenomenon, mitigates and opens resistance square, reduce abrasion, improves and use the longevity
Life.
As shown, expansive graphite sealing ring 54 is equipped between the valve base sealing trim ring 52 and elastic packing valve seat 51,
Sealing effect is further ensured, and expansive graphite sealing ring 54 has higher high temperature resistance, ensured under the condition of high temperature
Working seal performance.
52 inner ring of valve base sealing trim ring is formed with a circle positioning retainer ring 521, the positioning retainer ring 521 and elastic packing
The elastomeric seal portions 511 of valve seat 51 are corresponding, and dish plate can drive elastomeric seal portions 511 to deform, positioning retainer ring in opening-closing process
521 play a position limit, avoid 511 excessive deformation of elastomeric seal portions, damage itself elastic property, ensure that it uses the longevity
Life.
As shown, be equipped with stuffing-box between the valve body 1 and upper valve rod 2, be sequentially loaded into the stuffing-box axle sleeve 8,
Packing seat 9, filler assembly 10, gland 11, the gland 11 is connected by locking nut, screw rod and valve body 1, and is pressed
Tight filler assembly 10, axle sleeve 8 is so that 2 torque of upper valve rod is reduced, and valve opening and closing is lighter, and filler assembly 10 ensure that upper valve
Sealing effect between bar 3 and valve body 1.
As shown, being equipped with gasket seal 12 between 1 bottom of the bottom cover 6 and valve body, it is further ensured that valve body 1 and valve deck
Sealing effect between 6.
Embodiment is not construed as the limitation to utility model, but any spiritual improvements introduced based on the utility model,
It should all be within the protection scope of the utility model.
Claims (5)
1. a kind of high temperature resistant elastic packing double eccentric butterfly valve, including valve body（1）, upper valve rod（2）, lower valve rod（3）, dish plate（4）, valve
Holder assembly（5）, bottom cover（6）, driving executive module（7）；The dish plate（4）Pass through lower valve rod（3）It can be rotatably set in valve body
（1）It is interior, the upper valve rod（2）One end connects dish plate（4）, other end stretching valve body（1）Connection driving executive module（7）；It is described
Bottom cover（6）It is arranged in valve body（1）Bottom, and and valve body（1）Sealing cooperation；
It is characterized in that：The dish plate（4）On be formed with centrum sealing surface（41）；The valve component（5）Including elastic packing
Valve seat（51）, valve base sealing trim ring（52）；The valve base sealing trim ring（52）Pass through bolt（53）With valve body（1）Connection, it is described
Elastic packing valve seat（51）Pass through valve base sealing trim ring（52）It is fixedly mounted, and and valve body（1）, valve base sealing trim ring（52）Sealing
Cooperation, the elastic packing valve seat（51）On be formed with the elastomeric seal portions of bending（511）, and the elastomeric seal portions（511）
It can be with centrum sealing surface（41）Sealing cooperation；The dish plate（4）Double eccentric settings, the dish plate（4）Revolution axle center deviate in
The heart and deviation centrum sealing surface（41）Center.
2. high temperature resistant elastic packing double eccentric butterfly valve according to claim 1, it is characterised in that：The valve base sealing trim ring
（52）With elastic packing valve seat（51）Between be equipped with expansive graphite sealing ring（54）.
3. high temperature resistant elastic packing double eccentric butterfly valve according to claim 1, it is characterised in that：The valve base sealing trim ring
（52）Inner ring is formed with a circle positioning retainer ring（521）, the positioning retainer ring（521）With elastic packing valve seat（51）Elastic packing
Portion（511）It is corresponding.
4. high temperature resistant elastic packing double eccentric butterfly valve according to claim 1, it is characterised in that：The valve body（1）With it is upper
Valve rod（2）Between be equipped with stuffing-box, be sequentially loaded into axle sleeve in the stuffing-box（8）, Packing seat（9）, filler assembly（10）, filler
Gland（11）, the gland（11）Pass through locking nut, screw rod and valve body（1）Connection, and compress filler assembly（10）.
5. high temperature resistant elastic packing double eccentric butterfly valve according to claim 1, it is characterised in that：The bottom cover（6）With valve
Body（1）Gasket seal is equipped between bottom（12）.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820048432.3U CN207750506U (en) | 2018-01-12 | 2018-01-12 | High temperature resistant elastic packing double eccentric butterfly valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820048432.3U CN207750506U (en) | 2018-01-12 | 2018-01-12 | High temperature resistant elastic packing double eccentric butterfly valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207750506U true CN207750506U (en) | 2018-08-21 |
Family
ID=63152831
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820048432.3U Active CN207750506U (en) | 2018-01-12 | 2018-01-12 | High temperature resistant elastic packing double eccentric butterfly valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207750506U (en) |
-
2018
- 2018-01-12 CN CN201820048432.3U patent/CN207750506U/en active Active
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| GR01 | Patent grant | ||
| GR01 | Patent grant |