CN108980400A - A kind of eccentric ball valve - Google Patents
A kind of eccentric ball valve Download PDFInfo
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- CN108980400A CN108980400A CN201811224835.XA CN201811224835A CN108980400A CN 108980400 A CN108980400 A CN 108980400A CN 201811224835 A CN201811224835 A CN 201811224835A CN 108980400 A CN108980400 A CN 108980400A
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- valve
- ball
- sealing surface
- seat
- fluid channel
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- 238000007789 sealing Methods 0.000 claims abstract description 179
- 239000012530 fluid Substances 0.000 claims abstract description 76
- 230000007246 mechanism Effects 0.000 claims abstract description 21
- 210000004907 gland Anatomy 0.000 claims description 19
- 239000000945 filler Substances 0.000 claims description 18
- 230000006835 compression Effects 0.000 claims description 7
- 238000007906 compression Methods 0.000 claims description 7
- 230000003287 optical effect Effects 0.000 claims description 7
- 238000009991 scouring Methods 0.000 claims description 6
- 238000009434 installation Methods 0.000 description 11
- 238000000034 method Methods 0.000 description 9
- 238000004140 cleaning Methods 0.000 description 8
- 230000008569 process Effects 0.000 description 8
- 230000000694 effects Effects 0.000 description 7
- 238000010586 diagram Methods 0.000 description 6
- 230000008901 benefit Effects 0.000 description 4
- 238000001125 extrusion Methods 0.000 description 4
- 238000009825 accumulation Methods 0.000 description 3
- 230000006872 improvement Effects 0.000 description 3
- 239000002245 particle Substances 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 238000003754 machining Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 238000004804 winding Methods 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 238000010009 beating Methods 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 238000002425 crystallisation Methods 0.000 description 1
- 230000008025 crystallization Effects 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000005272 metallurgy Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000004753 textile Substances 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K5/00—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary
- F16K5/06—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary with plugs having spherical surfaces; Packings therefor
- F16K5/0663—Packings
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K27/00—Construction of housing; Use of materials therefor
- F16K27/06—Construction of housing; Use of materials therefor of taps or cocks
- F16K27/067—Construction of housing; Use of materials therefor of taps or cocks with spherical plugs
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K5/00—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary
- F16K5/08—Details
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Taps Or Cocks (AREA)
Abstract
The present invention provides a kind of eccentric ball valve, comprising: valve body has lumen, and the first fluid channel being connected to lumen；Valve deck is removably connect with valve body, has second fluid channel；After valve deck is connect with valve body, second fluid channel is connected to lumen；Valve ball is installed in rotation on inside lumen by operating mechanism, has valve ball sealing surface；Valve seat is mounted on valve deck, and having can squeeze with valve ball sealing surface, to seal the sealing surface of seat in second fluid channel；Valve seat can be mounted on valve deck to minute movement by adjustable mounting structure, under the driving of operating mechanism, valve ball, which turns to, makes valve ball sealing surface and sealing surface of seat gradually squeezes when contacting, valve seat can minute movement so that realization pressure uniformly seals between valve ball sealing surface and sealing surface of seat.Eccentric ball valve of the invention can be avoided the continued wear of valve ball and valve seat, and have good sealing performance.
Description
Technical field
The present invention relates to industrial valve technical fields, and in particular to a kind of eccentric ball valve.
Background technique
Ball valve is one of widely used valve, and simple structure and reliable sealing is easy to maintenance, is widely used
In fields such as petroleum, chemical industry, metallurgy, light textile, food, atomic energy, aviations.Ball valve has the movement being rotated by 90 °, and faucet body is ball
Body has circular through hole or channel by its axis, is mainly used to make in pipeline and cuts off, distributes and change the flowing side of medium
To it is only needed can tight closing with the rotating torque for the operation and very little being rotated by 90 °.Hard seal ball valve refers to ball valve sealing
Secondary (i.e. sealing surface of seat and ball seal face) material is paired into the ball valve of metal to metal.When need cut off, distribution or change
When the fluid of flow direction contains media particle, it will usually use hard seal ball valve.
Current hard seal ball valve, there are dead spaces for valve, in controlling some sticky, easy crystal medium make and break process,
There is a problem of material accumulation crystallization, rotten, causes medium " pollution "；Currently there are many eccentric semi-sphericals or track balls
Valve is all that one-way sealing (generally using spring structure, pushes valve seat towards valve ball direction although can solve dead space problem
Movement, when the pressure of valve ball side is higher than valve seat side, spring is compressed, and causes to leak, namely can not achieve two-way close
Envelope), and sealed precision is not high.
The sealing of conventional hard seal ball valve relies on the precise extrusion sealing in sealing surface of seat and ball seal face, this for
The requirement of the machining accuracy and installation accuracy in sealing surface of seat and ball seal face is all very high, once processing or installation appearance are subtle
Deviation is possible to bias occur, influence sealing effect, can lead to seal failure when serious.Valve seat in the prior art is usual
It is fixedly mounted on valve deck, when closing ball valve, the spherical surface of valve ball is contacted with the extruding of the sealing surface of seat of valve seat, is realized close
Envelope；This requires the installation accuracy of valve seat very high, it will usually be related to multiple trim process, and even install at the beginning
Precision reaches, subsequent after the use of certain time, it is also possible to bias abrasion occurs, lead to sealing surface of seat and spherical surface
Between sealed pressure it is uneven, and then sealing intensity is caused to reduce, it is serious or even can result in seal failure.
Summary of the invention
Therefore, the technical problem to be solved in the present invention is that hard seal ball valve in the prior art is overcome to install valve seat
Required precision is high, once minor deviations occurs in installation, that is, is easy to cause that sealing intensity reduces or even the technology of seal failure lacks
It falls into, so that providing a kind of pair of valve seat installation accuracy requires eccentric ball valve that is lower, but still ensuring that sealing intensity.
For this purpose, the present invention provides a kind of eccentric ball valve, comprising:
Valve body has lumen, and the first fluid channel being connected to the lumen；
Valve deck is removably connect with the valve body, has second fluid channel；The valve deck is connect with the valve body
Afterwards, the second fluid channel is connected to the lumen；
Valve ball is installed in rotation on inside the lumen by operating mechanism, has valve ball sealing surface；
Valve seat is mounted on the valve deck, and having can squeeze with the valve ball sealing surface, to seal the second fluid
The sealing surface of seat in channel；
The valve seat can be mounted on the valve deck to minute movement by adjustable mounting structure, in the operating mechanism
Under driving, the valve ball, which turns to, makes the valve ball sealing surface and the sealing surface of seat gradually squeezes when contacting, the valve seat
Can minute movement so that the valve ball sealing surface and the sealing surface of seat automatically adjust centering, and then realize that pressure is uniform
Sealing.
As a preferred embodiment, the adjustable mounting structure includes:
First valve deck step surface is circumferentially positioned at one end towards the valve ball of the valve deck；
Second valve deck step surface is circumferentially positioned at the first valve deck step surface periphery, and protrudes certain altitude；
Baffle ring is fixedly connected with the second valve deck step surface, and stretches out a part and the first valve deck step surface phase
It is right, form annular groove；
The valve seat is mounted in the annular groove, and by the baffle ring with certain pressure extruding be fixed on the baffle ring and
Between the first valve deck step surface；There is minim gap between the excircle of the valve seat and the bottom surface of the annular groove, with
Minute movement is done when being pressurized for the valve seat.
As a preferred embodiment, the adjustable mounting structure further include:
Spring eye has several, is uniformly arranged in the annular groove bottom, the spring eye axially along the ring
Shape slot is arranged radially, and has the opening being connected to the annular groove；
Compression spring is mounted on inside the spring eye, and the part for stretching out the spring eye is abutted with the valve seat, in institute
When stating valve seat and being not affected by external force, push the valve seat reset movement to middle position.
As a preferred embodiment, it is provided between the valve seat and the first valve deck step surface and at least seals together；
And/or it is provided between the valve seat and the baffle ring and at least seals together.
As a preferred embodiment, the sealing surface of seat is beveling elliptic cone positive round sealing surface, the valve ball sealing surface
For with the matched beveling elliptic cone positive round sealing surface of the sealing surface of seat；
Under the driving of the operating mechanism, the valve ball turns to the sealing second fluid along the first rotation direction and leads to
When road, the valve ball sealing surface is directly born against on the sealing surface of seat, and then the valve seat is pushed to do minute movement, realizes pressure
Power uniformly seals；
In the valve ball from the position for sealing the second fluid channel, along opposite with first rotation direction second
When rotation direction rotation is to open the second fluid channel, the valve ball sealing surface is directly separated with the sealing surface of seat,
Do not rotate hard friction with the sealing surface of seat.
As a preferred embodiment, after the valve deck is connect with the valve body, the first fluid channel and described second
Fluid channel is coaxial, has runner center line；
The plane that the vertex of elliptic cone where the sealing surface of seat and long axis are formed is hung down with the pivot center of the valve ball
Directly, and it is coplanar with the runner center line.
As a preferred embodiment, the line where the sealing surface of seat between the vertex and long axis midpoint of elliptic cone,
Towards the first rotation direction deflection, and the angle with 5-15 ° of runner center line formation.
As a preferred embodiment, the pivot center of the center of spherical surface and the valve ball where the valve ball sealing surface is not total
When line, the valve ball sealing surface and the sealing surface of seat squeeze sealing, the center of spherical surface is located at where the valve ball sealing surface
Between the pivot center and the valve deck.
As a preferred embodiment, the valve ball is c-type shape hemisphere, and turning in the valve ball keeps the second fluid logical
When road is at full open position, wall both ends point, the middle part drum of the c-type shape hemisphere are formed, at shuttle shape；
The inclined-plane that part is heaved towards middle part towards the tip in the second fluid channel, can guide from described second
Middle cavity wall described in fluid scouring in fluid channel.
As a preferred embodiment, the operating mechanism includes:
Lower axle is fixedly mounted on the valve body by bolt seal, is located at the lumen lower part, and having can deep enough institute
State the optical axis portion that valve ball bottom axocoel and the valve ball are rotatably connected；
Adjusting gasket, thickness is adjustable, is mounted between the bottom axocoel and optical axis portion top；
Gland is fixedly mounted on the valve body by bolt seal, is located at the lumen top, has central cavity,
The central cavity bottom is equipped with annular mounting groove；
Axle sleeve is mounted on inside the annular mounting groove, and thickness is greater than the depth of the annular mounting groove；
Valve rod is installed in rotation on inside the axle sleeve, and is extended downwardly the central cavity and connect with the valve ball,
The central cavity is stretched out upwards to connect with driving device；
End part seal ring is arranged in the axle sleeve lower part, between the axle sleeve and the valve rod, for sealing；
One end far from the lumen of the central cavity is arranged in filler mounting groove；
Filler is arranged inside the filler mounting groove；
Gland is set in the stem exterior, is bolted on the gland, squeezes the filler and institute
The outer wall for stating valve rod realizes sealing.
Technical solution provided by the invention, has the advantage that
1. eccentric ball valve of the invention, valve seat can be mounted on valve deck to minute movement by adjustable mounting structure, grasped
Make under the driving of mechanism, valve ball turns to when valve ball sealing surface and sealing surface of seat being made gradually to squeeze sealing, and valve seat small can move
It is dynamic, it is uniformly sealed so that pressure may be implemented between valve ball sealing surface and sealing surface of seat, and make sealing surface of seat and valve ball
Sealing surface automatically adjusts centering, realizes high-precision two way seal performance；Compared with prior art, eccentric ball valve of the invention, drop
The low assembly difficulty of eccentric ball valve, improves sealed precision, realizes two-way total pressure difference zero leakage.Eccentric sphere of the invention
Valve can compensate for valve seat because of the inadequate bring slight error of installation accuracy, realize pressure by the minute movement of valve seat in extrusion process
Power uniformly seals, and sealing intensity is high, can effectively ensure that high-precision two way seal effect, reduces assembly difficulty.
2. eccentric ball valve of the invention, adjustable mounting structure includes the first valve deck step surface, the second valve deck step surface and gear
Ring, the above three form annular groove, valve seat are squeezed in being mounted on, and have between the excircle of valve seat and the bottom surface of annular groove micro-
Small―gap suture, for valve seat when being pressurized as the adjustment space of minute movement.This adjustable mounting structure of the invention limits valve
Seat can only be moved in one plane, will not be impacted to the cooperation between sealing surface of seat and valve ball sealing surface, Neng Goushi
Existing two way seal.
3. eccentric ball valve of the invention, adjustable mounting structure further includes several spring eyes of several circular annular groove settings,
Being arranged radially axially along annular groove of spring eye, and there is the opening being connected to annular groove, compression spring is mounted on spring eye
Inside, one end is stretched out from aperture position to offset with valve seat；When valve seat is not affected by external force, push valve seat reset movement into
Between position.Such setting is so that valve seat has the process of a reset, when valve seat is squeezed by valve ball every time, can all have one it is new
Adjustment process.
As improvement project, several grooves can also be set on the step that the second valve deck step surface is set, by recessed
Gland is set on the one side of the second valve deck step surface of direction of slot, forms spring eye, difficulty of processing can be reduced in this way.
4. eccentric ball valve of the invention is provided between valve seat and the first valve deck step surface and at least seals together, specially
Slot is set on valve seat and/or the first valve deck step surface, the installation winding washer in slot；And/or it is set between valve seat and baffle ring
It is equipped with and at least seals together, slot specially is set on valve seat and/or baffle ring, the installation winding washer in slot.The setting of sealing,
Fluid media (medium) can be effectively prevent to enter the space between valve seat and annular groove, interfere the adjustment of valve seat mobile；And it can be with
The extrusion fit of valve ball is realized efficient sealed.
5. eccentric ball valve of the invention, sealing surface of seat is beveling elliptic cone positive round sealing surface, and valve ball sealing surface is and valve
The seat matched beveling elliptic cone positive round sealing surface of sealing surface；Under the driving of operating mechanism, valve ball is rotated along the first rotation direction
To when sealing second fluid channel, valve ball sealing surface is directly born against on sealing surface of seat, and then valve seat is pushed to do minute movement, real
Existing pressure uniformly seals；In valve ball from the position in sealing second fluid channel, along second turn opposite with the first rotation direction
When dynamic direction rotation is to open second fluid channel, valve ball sealing surface is directly separated with sealing surface of seat, not with sealing surface of seat
Rotate hard friction.This set of the invention can be avoided and generate rotation between valve ball sealing surface and sealing surface of seat firmly
Friction, can protect sealing surface, prolong the service life.
6. eccentric ball valve of the invention, the vertex of elliptic cone where sealing surface of seat further is arranged and long axis form flat
Face, it is vertical with the pivot center of valve ball and coplanar with runner center line, so that valve ball is when around pivot axis, it can be most
The active force for borrowing to big degree operating mechanism squeezes sealing surface of seat with valve ball sealing surface in sealing contact.
7. eccentric ball valve of the invention, the line where sealing surface of seat between the vertex and long axis midpoint of elliptic cone, to
The first rotation direction deflection, and form 5-15 ° of angle with runner center line；Such setting can make valve ball turn
It moves to when being contacted with valve ball sealing surface and sealing surface of seat extruding, there is biggish bearing capacity, that is to say, that even with very big
Strength drive operating mechanism, and then drive valve ball rotation when, according to above-mentioned skew direction be arranged sealing surface of seat, also can
It bears, will not slip；When opening second fluid channel towards negative side rotation valve ball, and valve ball sealing surface and valve seat can be made close
Cover releases rapidly contact, and rotation is utmostly avoided to wear.
8. eccentric ball valve of the invention, the center of spherical surface and the rotation axis of valve ball where valve ball sealing surface further is arranged
Line is not conllinear, and valve ball sealing surface and sealing surface of seat squeeze when sealing, and the center of spherical surface is located at rotation axis where valve ball sealing surface
Between line and valve deck, the advantages of this arrangement are as follows, the center of spherical surface is gradually leaned on where rotation valve ball makes valve ball sealing surface
When nearly valve deck, valve ball sealing surface can squeeze valve deck sealing surface with bigger strength, to improve sealing intensity.
9. eccentric ball valve of the invention, valve ball is c-type shape hemisphere, and turning in valve ball makes second fluid channel at beating completely
When open state, wall both ends point, the intermediate drum of c-type shape hemisphere are formed, at shuttle shape；The advantages of this arrangement are as follows towards second
The inclined-plane of part is heaved at the tip in body channel towards middle part, can be guided in the fluid scouring lumen in second fluid channel
Wall, and then clean when second fluid channel is closed, the media particle being attached on middle cavity wall plays self-cleaning work
With.
Valve ball turns to when completely closing second fluid channel, and lumen and first fluid channel are completely through no dead space can
To reduce media accumulation；Lumen internal diameter is much larger than the design of second fluid channel internal diameter, can alleviate in opening and closing moment from the
The excessively powerful scouring force of the medium centering cavity wall of two fluid channels.
Preferably, the outside for forming the wall of c-type shape valve ball, is arranged helical flange, when second fluid channel is beaten
When opening, fluid flow direction can be changed, make fluid spirally to wash away lumen inner wall, self-cleaning effect can be further increased.
10. eccentric ball valve of the invention, used operating mechanism includes lower axle, adjusting gasket, gland, axle sleeve, valve rod, fills out
Expect mounting groove, filler, gland；Wherein adjusting gasket can adjust the height of lower axle support valve ball, so that lower axle adaptability
It is stronger；Axle sleeve can limit valve rod and strictly rotate around its central axes, safety action precision, and reduce to gland central cavity
Installation accuracy requirement；The setting of filler mounting groove, filler, gland is sealed from central cavity outer end；It is arranged in axle sleeve lower part
End part seal ring (spirotallic gasket), from central cavity inner end seal, prevent fluid from leaking outside.
Detailed description of the invention
In order to illustrate more clearly of the technical solution in the prior art or the specific embodiment of the invention, below to existing skill
Attached drawing used in art or specific embodiment description is briefly described.
Fig. 1 is the overall structure diagram of eccentric ball valve of the present invention.
Fig. 2 is the structure enlargement diagram of part A in Fig. 1.
Fig. 3 is the structure enlargement diagram of part B in Fig. 1.
Fig. 4 is the structure enlargement diagram of C portion in Fig. 1.
Fig. 5 is the structural schematic diagram of valve body.
Fig. 6 be cone where sealing surface of seat vertex and the plane where long axis line and between runner center line partially
Move the schematic diagram of certain angle.
Appended drawing reference: 1, valve body；10, lumen；11, first fluid channel；12, runner center line；13, annular seal groove；
2, valve deck；20, annular groove；21, the first valve deck step surface；22, the second valve deck step surface；23, second fluid channel；24, baffle ring；
3, valve ball；31, valve ball sealing surface；32, bottom axocoel；33, sealing ring；34, pressure ring；4, valve seat；41, sealing surface of seat；42, bullet
Spring hole；43, compression spring；51, lower axle；52, optical axis portion；53, adjusting gasket；6, gland；60, central cavity；61, annular installation
Slot；62, filler mounting groove；63, filler；64, gland；7, axle sleeve；8, valve rod；81, end part seal ring.
Specific embodiment
Technical solution of the present invention is described in detail with reference to the accompanying drawings of the specification.
Embodiment
The present embodiment provides a kind of eccentric ball valves, as shown in Figure 1, comprising: valve body 1, have lumen 10, and with it is described in
The first fluid channel 11 that chamber 10 is connected to；Valve deck 2 is removably connect with the valve body 1, has second fluid channel 23；Institute
It states after valve deck 2 connect with the valve body 1, the second fluid channel 23 is connected to the lumen 10；Valve ball 3, by operating machine
Structure is installed in rotation on inside the lumen 10, has valve ball sealing surface 31；Valve seat 4 is mounted on the valve deck 2, has
It can be squeezed with the valve ball sealing surface 31, to seal the sealing surface of seat 41 in the second fluid channel 23；The valve seat 4 is logical
Crossing adjustable mounting structure can be mounted on to minute movement on the valve deck 2, under the driving of the operating mechanism, the valve ball 3
Turning to squeezes the valve ball sealing surface 31 gradually with the sealing surface of seat 41 when contacting, the valve seat 4 can minute movement,
So that the valve ball sealing surface 31 automatically adjusts centering with the sealing surface of seat 41, and then realize that pressure uniformly seals.
The eccentric ball valve of the present embodiment reduces the assembly difficulty of eccentric ball valve compared with prior art, improves sealing
Precision realizes two-way total pressure difference zero leakage；By the minute movement of valve seat 4 in extrusion process, valve seat 4 can compensate for because of installation essence
Degree or the inadequate bring slight error of machining accuracy realize that pressure uniformly seals, and sealing intensity is high, can effectively ensure that sealing
Effect.
As shown in Fig. 2, the adjustable mounting structure includes: the first valve deck step surface 21, it is circumferentially positioned at the valve deck 2
Towards one end of the valve ball 3；Second valve deck step surface 22 is circumferentially positioned at 21 periphery of the first valve deck step surface, and convex
Certain altitude out；Baffle ring 24 is fixedly connected with the second valve deck step surface 22, and stretches out a part and the first valve deck platform
Terrace 21 is opposite, forms annular groove 20；The valve seat 4 is mounted in the annular groove 20, and by the baffle ring 24 with a level pressure
Power extruding is fixed between the baffle ring 24 and the first valve deck step surface 21；The excircle of the valve seat 4 and the annular
There is minim gap, for doing minute movement when the valve seat 4 compression between the bottom surface of slot 20.This adjustable peace of the present embodiment
Assembling structure, limitation valve seat 4 can only be moved in one plane, will not be to matching between sealing surface of seat 41 and valve ball sealing surface 31
Conjunction impacts, and can be realized two way seal.
As shown in figure 3, the adjustable mounting structure further include: spring eye 42 has several, is uniformly arranged on the ring
On 20 bottom surface of shape slot, being arranged radially axially along the annular groove 20 of the spring eye 42 has and connects with the annular groove 20
Logical opening；Compression spring 43 is mounted on inside the spring eye, and the part and the valve seat 4 for stretching out the spring eye 42 are supported
It connects, when the valve seat 4 is not affected by external force, pushes 4 reset movement of valve seat to middle position.It is such setting so that
Valve seat 4 has the process of a reset, when valve seat 4 is squeezed by valve ball 3 every time, can all there is a new adjustment process.
As improvement project, several grooves can also be set on the step that the second valve deck step surface 22 is set, by
Gland is set on the one side of the second valve deck step surface 22 of direction of groove, forms spring eye 42, difficult processing can be reduced in this way
Degree.
It is provided between the valve seat 4 and the first valve deck step surface 21 and at least seals together；As a kind of preferred side
Case also can be set between the valve seat 4 and the baffle ring 24 and at least seal together.The setting of sealing can be effectively prevent
Fluid media (medium) enters the space between valve seat 4 and annular groove 20, interferes the adjustment of valve seat 4 mobile.
In the present embodiment, the end face towards valve deck 2 of valve body 1 is equipped with annular seal groove 13, sets in annular seal groove 13
There is spirotallic gasket, when valve deck 2 is fixedly connected by bolt with valve body 1, the spirotallic gasket being arranged in annular seal groove 13 can be risen
To sealing function.In addition, being provided with the protrusion part of the second valve deck step surface 22, protrude into inside the lumen 10 of the valve body 1, with
The inner wall of lumen 10 is bonded contact.This set can reduce the sealed pressure of 13 position of annular seal groove, enhance sealing effect.
As shown in fig. 6, the sealing surface of seat 41 be beveling elliptic cone positive round sealing surface, the valve ball sealing surface 31 be with
The matched beveling elliptic cone positive round sealing surface of the sealing surface of seat 41.
Under the driving of the operating mechanism, the valve ball 3 turns to the sealing second fluid along the first rotation direction
When channel 23, the valve ball sealing surface 31 is directly born against on the sealing surface of seat 41, and then the valve seat 4 is pushed to do small shifting
It is dynamic, realize that pressure uniformly seals；
In the valve ball 3 from the position for sealing the second fluid channel 23, along opposite with first rotation direction
When the rotation of second rotation direction is to open the second fluid channel 23, the valve ball sealing surface 31 and the sealing surface of seat 41
It directly separates, do not rotate hard friction with the sealing surface of seat 41.This set of the invention can be avoided valve ball sealing
Rotation hard friction is generated between face 31 and sealing surface of seat 41, can be protected sealing surface, be prolonged the service life.
After the valve deck 2 is connect with the valve body 1, the first fluid channel 11 and the second fluid channel 23 are same
Axis has runner center line 12；The plane that the vertex of the 41 place elliptic cone of sealing surface of seat and long axis are formed, with the valve
The pivot center of ball 3 is vertical, and coplanar with the runner center line 12, so that valve ball 3 is when around pivot axis, it can be most
The active force for borrowing to big degree operating mechanism, squeezes sealing surface of seat 41 with valve ball sealing surface 31 in sealing contact.
Line between the vertex and long axis midpoint of the 41 place elliptic cone of sealing surface of seat, towards first rotation
Direction deflection, and 5-15 ° of angle is formed with the runner center line 12, it is 10 ° in this implementations.Such setting can make
Valve ball 3 turn to valve ball sealing surface 31 and sealing surface of seat 41 extruding contact when, have biggish bearing capacity, that is,
It says, when even driving operating mechanism with very big strength, and then valve ball 3 being driven to rotate, according to the setting of above-mentioned skew direction
Sealing surface of seat 41, is also able to bear, and will not slip；When opening second fluid channel 23 towards negative side rotation valve ball 3, again
Valve ball sealing surface 31 can be made to release rapidly with sealing surface of seat 41 to contact, rotation is utmostly avoided to wear.
The center of the 31 place spherical surface of valve ball sealing surface is not conllinear with the pivot center of the valve ball 2, and the valve ball is close
When cover 31 and the sealing surface of seat 41 squeeze sealing, the center of the 31 place spherical surface of valve ball sealing surface is located at the rotation
Between axis and the valve deck 2.The advantages of this arrangement are as follows when rotation valve ball 3 makes 31 place spherical surface of valve ball sealing surface
When center moves closer to valve deck 2, valve ball sealing surface 31 can squeeze valve deck sealing surface 41 with bigger strength, to improve sealing
Intensity.
In this implementation, valve ball 3 includes main body, sealing ring 33 and pressure ring 34, and pressure ring 34 is fixed by sealing ring 33 by bolt
Valve ball 3 is formed in main body, valve ball sealing surface 31 is arranged in the peripheral outer wall of sealing ring 33.
As shown in Figure 1, the valve ball 3 is c-type hemisphere, the internal diameter of the lumen 10 is much larger than the second fluid channel
Internal diameter forms the wall two of the c-type when the valve ball 3, which turns to, makes the second fluid channel 23 into full open position
End point, middle part drum, at shuttle shape；The inclined-plane of part, Neng Gouyin are heaved towards middle part towards the tip in the second fluid channel 23
10 inner wall of lumen described in the fluid scouring in the second fluid channel 23 is led, and then is cleaned in second fluid channel 23
When closing, the media particle being attached on 10 inner wall of lumen plays the role of self-cleaning.Valve ball, which turns to, completely closes second
When body channel, lumen and first fluid channel are completely through no dead space, it is possible to reduce media accumulation；Lumen internal diameter is much larger than the
The design of two fluid channel internal diameters can alleviate the mistake of the medium centering cavity wall from second fluid channel in opening and closing moment
In powerful scouring force.
Preferably, the outside of the wall of c-type is formed, helical flange is set, when second fluid channel 23 is opened,
Changeable fluid flow direction, makes fluid spirally to wash away 10 inner wall of lumen, can further increase self-cleaning effect.
As further improvement project, also settable spherical cleaning device, setting wheel rotation shape flange, is used on its external wall
In changing liquid flow direction, so that fluid spiral is washed away the inner wall of lumen 10, play cleaning effect.When the inner wall for needing to clean lumen 10
When, valve ball 3 is changed to above-mentioned spherical cleaning device, after cleaning, then is changed to valve ball 3.
As shown in figures 1,4 and 5, the operating mechanism includes: lower axle 51, is fixedly mounted on the valve body 1 by bolt seal
On, it is located at 10 lower part of lumen, there is the deep enough 3 bottom axocoel 32 of valve ball of energy to be rotatably connected with the valve ball 3
Optical axis portion 52；Adjusting gasket 53, thickness is adjustable, is mounted between the bottom axocoel 32 and 52 top of optical axis portion；Gland
6, be fixedly mounted on the valve body 1 by bolt seal, be located at 10 top of lumen, have central cavity 60, it is described in
Cavity 60 bottom in portion's is equipped with annular mounting groove 61；Axle sleeve 7 is mounted on inside the annular mounting groove 61, and thickness is greater than the ring
The depth of shape mounting groove 61；Valve rod 8 is installed in rotation on inside the axle sleeve 7, and extend downwardly the central cavity 60 with
The valve ball 3 connects, and stretches out the central cavity 60 upwards and connect with driving device；End part seal ring 81 is arranged in the axis
7 lower parts are covered, between the axle sleeve 7 and the valve rod 8, for sealing；Filler mounting groove 62 is arranged in the central cavity
60 one end far from the lumen 10；Filler 63 is arranged inside the filler mounting groove 62；Gland 64, is set in
It outside the valve rod 8, is bolted on the gland 6, the outer wall realization for squeezing the filler 63 and the valve rod 8 is close
Envelope.
In the operating mechanism, adjusting gasket 53 can adjust the height that lower axle 51 supports valve ball 3, so that lower axle 3 adapts to
Property is stronger；Axle sleeve 7 can limit valve rod 8 and strictly rotate around its central axes, safety action precision, and reduce in gland 6
The required precision of portion's cavity 60；The setting of filler mounting groove 62, filler 63, gland 64 is sealed from 10 outer end of central cavity；
The end part seal ring 81 (spirotallic gasket) of 7 lower part of axle sleeve is set, is sealed from 10 inner end of central cavity, prevents fluid from leaking outside.
Obviously, the above embodiments are merely examples for clarifying the description, and does not limit the embodiments.It is right
For those of ordinary skill in the art, can also make on the basis of the above description it is other it is various forms of variation or
It changes.There is no necessity and possibility to exhaust all the enbodiments.And it is extended from this it is obvious variation or
It changes still within the protection scope of the invention.
Claims (10)
1. a kind of eccentric ball valve, comprising:
Valve body (1) has lumen (10), and the first fluid channel (11) being connected to the lumen (10)；
Valve deck (2) is removably connect with the valve body (1), is had second fluid channel (23)；The valve deck (2) with it is described
After valve body (1) connection, the second fluid channel (23) is connected to the lumen (10)；
Valve ball (3) is installed in rotation on the lumen (10) inside by operating mechanism, has valve ball sealing surface (31)；
Valve seat (4) is mounted on the valve deck (2), and having can squeeze with the valve ball sealing surface (31), to seal described the
The sealing surface of seat (41) of two fluid channels (23)；
It is characterized by:
The valve seat (4) can be mounted on to minute movement on the valve deck (2) by adjustable mounting structure, in the operating mechanism
Driving under, the valve ball (3), which turns to, to be squeezed the valve ball sealing surface (31) gradually with the sealing surface of seat (41) to connect
When touching, the valve seat (4) can minute movement so that the valve ball sealing surface (31) and the sealing surface of seat (41) automatically adjust
Centering, and then realize that pressure uniformly seals.
2. eccentric ball valve according to claim 1, it is characterised in that: the adjustable mounting structure includes:
First valve deck step surface (21), is circumferentially positioned at one end towards the valve ball (3) of the valve deck (2)；
Second valve deck step surface (22) is circumferentially positioned at the first valve deck step surface (21) periphery, and protrudes certain altitude；
Baffle ring (24) is fixedly connected with the second valve deck step surface (22), and stretches out a part and the first valve deck step
Face (21) relatively, is formed annular groove (20)；
The valve seat (4) is mounted in the annular groove (20), and is fixed on institute by the baffle ring (24) with certain pressure extruding
It states between baffle ring (24) and the first valve deck step surface (21)；The excircle of the valve seat (4) and the annular groove (20)
There is minim gap, for doing minute movement when the valve seat (4) compression between bottom surface.
3. eccentric ball valve according to claim 2, it is characterised in that: the adjustable mounting structure further include:
Spring eye (42) has several, is uniformly arranged on the annular groove (20) bottom surface, the axial direction of the spring eye (42)
Along being arranged radially for the annular groove (20), there is the opening being connected to the annular groove (20)；
Compression spring (43), is mounted on that the spring eye (42) is internal, stretch out the spring eye (42) part and the valve seat
(4) it abuts, when the valve seat (4) is not affected by external force, pushes the valve seat (4) reset movement to middle position.
4. eccentric ball valve according to claim 2 or 3, it is characterised in that: the valve seat (4) and the first valve deck step
It is provided between face (21) and at least seals together；
And/or it is provided between the valve seat (4) and the baffle ring (24) and at least seals together.
5. eccentric ball valve according to claim 1, it is characterised in that: the sealing surface of seat (41) is to chamfer elliptic cone just
Circle sealing surface, the valve ball sealing surface (31) are and the matched beveling elliptic cone positive round sealing surface of the sealing surface of seat (41)；
Under the driving of the operating mechanism, the valve ball (3) turns to the sealing second fluid along the first rotation direction and leads to
When road (23), the valve ball sealing surface (31) is directly born against on the sealing surface of seat (41), and then the valve seat (4) is pushed to do
Minute movement realizes that pressure uniformly seals；
In the valve ball (3) from the position for sealing the second fluid channel (23), along opposite with first rotation direction
When the rotation of second rotation direction is to open second fluid channel (23), the valve ball sealing surface (31) and the valve base sealing
Face (41) directly separates, and do not rotate hard friction with the sealing surface of seat (41).
6. eccentric ball valve according to claim 5, it is characterised in that: after the valve deck (2) connect with the valve body (1),
The first fluid channel (11) and the second fluid channel (23) coaxially, have runner center line (12)；
The plane that the vertex of elliptic cone where the sealing surface of seat (41) and long axis are formed, the rotation axis with the valve ball (3)
Line is vertical, and coplanar with the runner center line (12).
7. eccentric ball valve according to claim 6, it is characterised in that: the top of elliptic cone where the sealing surface of seat (41)
Line between point and long axis midpoint forms 5- towards the first rotation direction deflection, and with the runner center line (12)
15 ° of angle.
8. the eccentric ball valve according to any one of claim 5-7, it is characterised in that: where the valve ball sealing surface (31)
The center of spherical surface is not conllinear with the pivot center of the valve ball (2), the valve ball sealing surface (31) and the sealing surface of seat
(41) when squeezing sealing, the center of spherical surface is located at the pivot center and the valve deck (2) where the valve ball sealing surface (31)
Between.
9. eccentric ball valve according to claim 8, it is characterised in that: the valve ball (3) is c-type hemisphere, the lumen
(10) internal diameter is much larger than the internal diameter in the second fluid channel, and turning in the valve ball (3) makes the second fluid channel
(23) at full open position when, wall both ends point, the middle part drum of the c-type hemisphere are formed, at shuttle shape；
The inclined-plane that part is heaved towards the tip of the second fluid channel (23) towards middle part, can guide from described second
Lumen (10) inner wall described in fluid scouring in fluid channel (23).
10. eccentric ball valve according to claim 1, it is characterised in that: the operating mechanism includes:
Lower axle (51) is fixedly mounted on the valve body (1) by bolt seal, is located at the lumen (10) lower part, has energy
The optical axis portion (52) that the deep enough valve ball (3) bottom axocoel (32) and the valve ball (3) are rotatably connected；
Adjusting gasket (53), thickness is adjustable, is mounted between the bottom axocoel (32) and the optical axis portion (52) top；
Gland (6) is fixedly mounted on the valve body (1) by bolt seal, is located at the lumen (10) top, has middle part
Cavity (60), central cavity (60) bottom are equipped with annular mounting groove (61)；
Axle sleeve (7), is mounted on the annular mounting groove (61) inside, and thickness is greater than the depth of the annular mounting groove (61)；
It is internal to be installed in rotation on the axle sleeve (7), and extends downwardly the central cavity (60) and the valve for valve rod (8)
Ball (3) connection, stretches out the central cavity (60) upwards and connect with driving device；
End part seal ring (81) is arranged in the axle sleeve (7) lower part, between the axle sleeve (7) and the valve rod (8), uses
In sealing；
Filler mounting groove (62) is arranged in one end far from the lumen (10) of the central cavity (60)；
Filler (63), setting are internal in the filler mounting groove (62)；
Gland (64) is set in the valve rod (8) outside, is bolted on the gland (6), fills out described in extruding
Expect that the outer wall of (63) and the valve rod (8) is realized to seal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811224835.XA CN108980400B (en) | 2018-10-19 | 2018-10-19 | A kind of eccentric ball valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811224835.XA CN108980400B (en) | 2018-10-19 | 2018-10-19 | A kind of eccentric ball valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108980400A true CN108980400A (en) | 2018-12-11 |
| CN108980400B CN108980400B (en) | 2019-06-14 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811224835.XA Active CN108980400B (en) | 2018-10-19 | 2018-10-19 | A kind of eccentric ball valve |
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| Country | Link |
|---|---|
| CN (1) | CN108980400B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201382177Y (en) * | 2009-04-14 | 2010-01-13 | 谢正泽 | Partial derivation control ball valve |
| CN201386824Y (en) * | 2009-04-14 | 2010-01-20 | 谢正泽 | High-pound-grade eccentric rotary wearproof ball valve |
| CN203847747U (en) * | 2014-04-15 | 2014-09-24 | 山东阿伐流体控制有限公司 | High-performance C-shaped abrasion-resistant ball valve |
| GB2523829A (en) * | 2014-03-07 | 2015-09-09 | Crane Ltd | Valve assembly |
| CN206001034U (en) * | 2016-07-21 | 2017-03-08 | 中阀科技(长沙)阀门有限公司 | Upper dress formula eccentric half-ball valve |
-
2018
- 2018-10-19 CN CN201811224835.XA patent/CN108980400B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201382177Y (en) * | 2009-04-14 | 2010-01-13 | 谢正泽 | Partial derivation control ball valve |
| CN201386824Y (en) * | 2009-04-14 | 2010-01-20 | 谢正泽 | High-pound-grade eccentric rotary wearproof ball valve |
| GB2523829A (en) * | 2014-03-07 | 2015-09-09 | Crane Ltd | Valve assembly |
| CN203847747U (en) * | 2014-04-15 | 2014-09-24 | 山东阿伐流体控制有限公司 | High-performance C-shaped abrasion-resistant ball valve |
| CN206001034U (en) * | 2016-07-21 | 2017-03-08 | 中阀科技(长沙)阀门有限公司 | Upper dress formula eccentric half-ball valve |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108980400B (en) | 2019-06-14 |
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Inventor after: Xie Zhengze Inventor after: Wang Pengfei Inventor after: Li Bo Inventor after: Ren Qingwei Inventor after: Li Zengyou Inventor after: Zhang Yan Inventor after: Chen Hao Inventor after: Liu Minnan Inventor after: Wang Jie Inventor before: Xie Zhengze Inventor before: Li Bo Inventor before: Ren Qingwei Inventor before: Wang Pengfei Inventor before: Li Zengyou Inventor before: Zhang Yan Inventor before: Chen Hao Inventor before: Liu Minnan Inventor before: Wang Jie |
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Effective date of registration: 20190517 Address after: 266400 Tieshan Industrial Park, Huangdao District, Qingdao City, Shandong Province Applicant after: Alpha fluid controls Ltd Address before: 266400 Tieshan Industrial Park, Huangdao District, Qingdao City, Shandong Province Applicant before: Xie Zhengze |
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