CN205173548U - Two eccentric hemisphere valves - Google Patents
Two eccentric hemisphere valves Download PDFInfo
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- CN205173548U CN205173548U CN201520870490.0U CN201520870490U CN205173548U CN 205173548 U CN205173548 U CN 205173548U CN 201520870490 U CN201520870490 U CN 201520870490U CN 205173548 U CN205173548 U CN 205173548U
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- valve
- valve body
- half ball
- double eccentric
- eccentric half
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Abstract
The utility model discloses a two eccentric hemisphere valves, including valve body, support and actuating mechanism, actuating mechanism passes through support and valve body fixed connection, the valve body is equipped with fluid passage, and is equipped with hemispheroid and disk seat in the valve body, fluid passage can be closed or open in hemispheroid and disk seat cooperation, the hemispheroid passes through the valve rod and is connected with actuating mechanism, the filler component who establishes between valve body and the valve rod sets up flexible graphite and packs, the filler component middle part is equipped with the spacer ring and divide into two parts from top to bottom with filler component, the filler component lower extreme is equipped with to pack and fills up, it is equipped with the tight bolt of deciding to correspond the position with the pad that packs on the valve body, tightly it is equipped with the split ring to decide the bolt lower part, the valve rod cover of split ring lower part is equipped with the valve lever bushing, filler component upper portion is equipped with gland, gland passes through stud and nut and valve body fixed connection, actuating mechanism includes electric actuator and hand operations. The utility model discloses good sealing performance has, and long service life.
Description
Technical field
The utility model relates to the control field in fluid delivery system, especially relates to the double eccentric half ball valve in Valve controlling field.
Background technique
Eccentric half-ball valve and Flange Gate Valves are the valves belonging to a type together, and distinguishing at its closure member is a spheroid, and spheroid is done around valve body center line to rotate a kind of valve reaching unlatching, close.Ball valve is mainly used to make the flow direction cutting off, distribute and change medium in pipeline.Two-piece ball valve, three-flat ball valve is a kind of novel valve be widely adopted in recent years.
Eccentric half-ball valve is made up of valve body, hemisphere, valve rod, handle and valve seat filler, arranges hemisphere and valve seat in valve body, and hemisphere and valve seat match, and hemisphere is by the handle of valve rod connection valve external body.During valve closing, hemisphere and valve seat form sealing state, and during unlatching, hemisphere turns an angle, and the pressure loss is little.
In actual use, there is the shortcomings such as the poor and negotiability of sealing is little in existing eccentric ball valve in conveying fluid.And when carrying severe corrosive, corrosivity being existed to hemisphere, affecting sealability.
Existing eccentric ball valve is round structure due to spheroid, therefore easily accumulates sediments bottom it, affects sealing.
Summary of the invention
Problem to be solved in the utility model is, for above-mentioned shortcoming of the prior art, proposes improvement project or alternative, especially a kind of double eccentric half ball valve improving sealing and stability.
For solving the problem, the scheme that the utility model adopts is as follows: a kind of double eccentric half ball valve, comprises valve body, support and actuator, it is characterized in that, described actuator is fixedly connected with valve body by support; Described valve body is provided with fluid passage, and is provided with hemisphere and valve seat in valve body; Described hemisphere and valve seat coordinate can close or open fluid passage; Described hemisphere is connected with actuator by valve rod; The filler group of establishing between described valve body and valve rod arranges flexible graphite packing; Being provided with spacer ring in the middle part of described filler group by filler component is upper and lower two-part; Described filler group lower end is provided with Packing seat; Described valve body is provided with tight fixed bolt with Packing seat corresponding position; Described tight fixed bolt bottom is provided with trip ring; The valve stem casing of described trip ring bottom is provided with valve lever bushing; Described filler group top is provided with Gland; Described Gland is fixedly connected with valve body with nut by stud; Described actuator comprises Electric actuator and manual operating device.
Double eccentric half ball valve of the present utility model is on the basis of prior art, the high-performance ball valve of development.Combine the advantage of traditional regulation valve, butterfly valve, ball valve and gate valve, have that negotiability is large, adjustable extent is wide, safe and reliable, open and close the advantages such as rapid, due to the eccentric cam principle of this existence, make drive unit at drive valve closing member from being opened to closing process, the sealing force acted on valve seat increases gradually.Even if the spherical surface of valve closing member and sealing surface of seat are by departing to contacting completely, and increase its seal pressure gradually, until seal completely, vice versa.This just substantially improves sealing condition and the sealing effect of ordinary ball valve, also achieves and use hard sealing material on ball valve.So it is a kind of broad-spectrum valve.Its Connecting format on pipeline has and connects and Flange joint folder.Nominal pressure PN1.0 ~ 4.0MPa, pressure rating 150 ~ 300 grades, bore scope DN25 ~ 600, NPS1 " ~ 24 ".
Filler group uses spacer ring to be divided into two groups, and is arranging Gland and Packing seat respectively up and down, makes the sealing between valve rod and valve body obtain great reinforcement.The actuator that Electric actuator and manual operating device combine makes double eccentric half ball valve of the present utility model have multiple choices in executable operations, can telecontrol, again can the manually-operable when having a power failure.
Negotiability is large, and when using as modulating valve, it is similar to equal percentage characteristics because there being Flow characteristics, so its adjustable extent is wide, adjustable peak rate of flow and the ratio of minimum discharge can reach 200:1.
Further, double eccentric half ball valve according to technique scheme, described body base is provided with bottom; Described bottom center and valve rod are in same center line; Described bottom is fixedly connected with valve body by screw; Expanded graphite composite pad is provided with between described bottom and valve body; Described bottom is provided with spacer and lower valve rod successively; Described lower valve rod is arranged with lower valve rod lining.
Further, double eccentric half ball valve according to technique scheme, described valve seat is arranged in fluid passage, and is provided with O type circle between valve seat and valve body; Described valve seat by valve seat trim ring to being located in fluid passage; Described valve seat trim ring is connected with valve body by screw.
The existing soft seal of sealing surface of seat (reinforced TFE and enhancing rubber), also has hard sealing (elastic metal sealing ring, cemented carbide etc.), can adapt to various pressure, temperature, medium.
Further, double eccentric half ball valve according to technique scheme, described manual operating device comprises handwheel; Described handwheel is provided with anti-slip rubber raised line.
Further, double eccentric half ball valve according to technique scheme, described hemisphere adopts eccentric structure; Described hemispheroidal radius shortens gradually along closed fluid passage sense of rotation.
Have employed eccentric structure design, during unlatching, flap and valve seat can hightail, and decrease the damage by friction of sealing surface, reduce operation moment of torsion.During closedown, seal pressure increases gradually, until seal completely, reaches best sealing effect.
Further, double eccentric half ball valve according to technique scheme, described body base is provided with sewage draining exit.
Sewage draining exit is provided with at body base, can sediment in periodic exhaustion cavity, impact sealing when avoiding sediment too much.
Further, double eccentric half ball valve according to technique scheme, described Expanded graphite composite pad comprises Expanded graphite and stainless steel.
Further, double eccentric half ball valve according to technique scheme, described O type circle is that fluorine rubber material is made.
Further, double eccentric half ball valve according to technique scheme, is provided with flexible graphic compound sealed circle between described valve seat and valve seat trim ring; Described flexible graphic compound sealed circle comprises Expanded graphite and low carbon steel.
When system needs to reduce noise, can noise reduction grid be set after valve.
Technique effect of the present utility model is as follows: double eccentric half ball valve of the present utility model is on the basis of prior art, the high-performance ball valve of development.Combine the advantage of traditional regulation valve, butterfly valve, ball valve and gate valve, have that negotiability is large, adjustable extent is wide, safe and reliable, open and close the advantages such as rapid, due to the eccentric cam principle of this existence, make drive unit at drive valve closing member from being opened to closing process, the sealing force acted on valve seat increases gradually.Even if the spherical surface of valve closing member and sealing surface of seat are by departing to contacting completely, and increase its seal pressure gradually, until seal completely, vice versa.This just substantially improves sealing condition and the sealing effect of ordinary ball valve, also achieves and use hard sealing material on ball valve.So it is a kind of broad-spectrum valve.Its Connecting format on pipeline has and connects and Flange joint folder.Nominal pressure PN1.0 ~ 4.0MPa, pressure rating 150 ~ 300 grades, bore scope DN25 ~ 600, NPS1 " ~ 24 ".
Accompanying drawing explanation
Fig. 1 is double eccentric half ball valve structural representation.
Fig. 2 is hemisphere and valve body closing structure schematic diagram.
Wherein, 1-actuator, 2-Gland, 3-filler group, 4-spacer ring, 5-tight fixed bolt, 6-valve body, 7-lower valve rod lining, 8-lower valve rod, 9-bottom, 10-spacer, 11-valve seat, 12-valve seat trim ring, 13-hemisphere, 14 valve lever bushings, 15 trip rings, 16-Packing seat, 17-valve rod, 18-O type circle, 19-flexible graphic compound sealed circle.
Embodiment
Below in conjunction with accompanying drawing, the utility model is described in further details.
A kind of double eccentric half ball valve, comprise valve body, support and actuator, described actuator is fixedly connected with valve body by support; Described valve body is provided with fluid passage, and is provided with hemisphere and valve seat in valve body; Described hemisphere and valve seat coordinate can close or open fluid passage; Described hemisphere is connected with actuator by valve rod; The filler group of establishing between described valve body and valve rod arranges flexible graphite packing; Being provided with spacer ring in the middle part of described filler group by filler component is upper and lower two-part; Described filler group lower end is provided with Packing seat; Described valve body is provided with tight fixed bolt with Packing seat corresponding position; Described tight fixed bolt bottom is provided with trip ring; The valve stem casing of described trip ring bottom is provided with valve lever bushing; Described filler group top is provided with Gland; Described Gland is fixedly connected with valve body with nut by stud; Described actuator comprises Electric actuator and manual operating device, and described body base is provided with bottom; Described bottom center and valve rod are in same center line; Described bottom is fixedly connected with valve body by screw; Expanded graphite composite pad is provided with between described bottom and valve body; Described bottom is provided with spacer and lower valve rod successively; Described lower valve rod is arranged with lower lining, and described valve seat is arranged in fluid passage, and is provided with O type circle between valve seat and valve body; Described valve seat by valve seat trim ring to being located in fluid passage; Described valve seat trim ring is connected with valve body by screw, and described manual operating device comprises handwheel; Described handwheel is provided with anti-slip rubber raised line, and described hemisphere adopts eccentric structure; Described hemispheroidal radius shortens gradually along closed fluid passage sense of rotation, described body base is provided with sewage draining exit, described Expanded graphite composite pad comprises Expanded graphite and stainless steel, described O type circle is that fluorine rubber material is made, and is provided with flexible graphic compound sealed circle between described valve seat and valve seat trim ring; Described flexible graphic compound sealed circle comprises Expanded graphite and low carbon steel.
Claims (9)
1. a double eccentric half ball valve, comprises valve body, support and actuator, it is characterized in that, described actuator is fixedly connected with valve body by support; Described valve body is provided with fluid passage, and is provided with hemisphere and valve seat in valve body; Described hemisphere and valve seat coordinate can close or open fluid passage; Described hemisphere is connected with actuator by valve rod; The filler group of establishing between described valve body and valve rod arranges flexible graphite packing; Being provided with spacer ring in the middle part of described filler group by filler component is upper and lower two-part; Described filler group lower end is provided with Packing seat; Described valve body is provided with tight fixed bolt with Packing seat corresponding position; Described tight fixed bolt bottom is provided with trip ring; The valve stem casing of described trip ring bottom is provided with valve lever bushing; Described filler group top is provided with Gland; Described Gland is fixedly connected with valve body with nut by stud; Described actuator comprises Electric actuator and manual operating device.
2. double eccentric half ball valve according to claim 1, it is characterized in that, described body base is provided with bottom; Described bottom center and valve rod are in same center line; Described bottom is fixedly connected with valve body by screw; Expanded graphite composite pad is provided with between described bottom and valve body; Described bottom is provided with spacer and lower valve rod successively; Described lower valve rod is arranged with lower valve rod lining.
3. double eccentric half ball valve according to claim 1, it is characterized in that, described valve seat is arranged in fluid passage, and is provided with O type circle between valve seat and valve body; Described valve seat by valve seat trim ring to being located in fluid passage; Described valve seat trim ring is connected with valve body by screw.
4. double eccentric half ball valve according to claim 1, it is characterized in that, described manual operating device comprises handwheel; Described handwheel is provided with anti-slip rubber raised line.
5. double eccentric half ball valve according to claim 1, is characterized in that, described hemisphere adopts eccentric structure; Described hemispheroidal radius shortens gradually along closed fluid passage sense of rotation.
6. double eccentric half ball valve according to claim 1, it is characterized in that, described body base is provided with sewage draining exit.
7. double eccentric half ball valve according to claim 2, it is characterized in that, described Expanded graphite composite pad comprises Expanded graphite and stainless steel.
8. double eccentric half ball valve according to claim 3, it is characterized in that, described O type circle is that fluorine rubber material is made.
9. double eccentric half ball valve according to claim 3, is characterized in that, be provided with flexible graphic compound sealed circle between described valve seat and valve seat trim ring; Described flexible graphic compound sealed circle comprises Expanded graphite and low carbon steel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520870490.0U CN205173548U (en) | 2015-11-04 | 2015-11-04 | Two eccentric hemisphere valves |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520870490.0U CN205173548U (en) | 2015-11-04 | 2015-11-04 | Two eccentric hemisphere valves |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205173548U true CN205173548U (en) | 2016-04-20 |
Family
ID=55737542
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520870490.0U Active CN205173548U (en) | 2015-11-04 | 2015-11-04 | Two eccentric hemisphere valves |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205173548U (en) |
-
2015
- 2015-11-04 CN CN201520870490.0U patent/CN205173548U/en active Active
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |