CN110242766A - The unilateral guide frame of the valve rod of forced seal ball valve - Google Patents
The unilateral guide frame of the valve rod of forced seal ball valve Download PDFInfo
- Publication number
- CN110242766A CN110242766A CN201910657448.3A CN201910657448A CN110242766A CN 110242766 A CN110242766 A CN 110242766A CN 201910657448 A CN201910657448 A CN 201910657448A CN 110242766 A CN110242766 A CN 110242766A
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- Prior art keywords
- valve rod
- face
- valve
- limit
- track
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- 238000005096 rolling process Methods 0.000 claims abstract description 72
- 230000007704 transition Effects 0.000 claims abstract description 10
- 238000007789 sealing Methods 0.000 claims description 19
- 238000010586 diagram Methods 0.000 description 5
- 238000009434 installation Methods 0.000 description 5
- 241001136800 Anas acuta Species 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 description 4
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 3
- 238000005299 abrasion Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000009467 reduction Effects 0.000 description 3
- 230000004044 response Effects 0.000 description 3
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 description 2
- 230000001050 lubricating effect Effects 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000001360 synchronised effect Effects 0.000 description 2
- 238000003889 chemical engineering Methods 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000018044 dehydration Effects 0.000 description 1
- 238000006297 dehydration reaction Methods 0.000 description 1
- 230000000994 depressogenic effect Effects 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- WGCNASOHLSPBMP-UHFFFAOYSA-N hydroxyacetaldehyde Natural products OCC=O WGCNASOHLSPBMP-UHFFFAOYSA-N 0.000 description 1
- 239000007937 lozenge Substances 0.000 description 1
- 239000000314 lubricant Substances 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
- 239000003345 natural gas Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 230000005514 two-phase flow Effects 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
Classifications
-
- 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
- F16K27/08—Guiding yokes for spindles; Means for closing housings; Dust caps, e.g. for tyre valves
-
- 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
- F16K5/0647—Spindles or actuating means
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Taps Or Cocks (AREA)
- Mechanically-Actuated Valves (AREA)
Abstract
The present invention relates to a kind of unilateral guide frames of valve rod of forced seal ball valve, including valve deck, valve rod, the valve rod passes through the central bore of valve deck, the central bore both ends of valve deck are stretched out at the valve rod both ends, one rotating forward limit track face is at least set on the shaft outer wall of valve rod, one reversion limit track face, rotating forward limit track face includes that a rotating forward limits helicoid, the upper end and head end for rotating forward limit helicoid rotate forward confined planes smooth transition, inverting limit track face includes that a reversion limits helicoid, the upper end of reversion limit helicoid and head end reversion confined planes smooth transition, the track pin extended to central bore is arranged in the position in valve deck inner sidewall respective carter face, the setting of the front end of track pin can free rolling rolling element, the outer surface of rolling element is to roll cylindrical surface or the rolling circle conical surface, the side of the outer surface of rolling element with it is corresponding Orbital plane keeps often contacting and being formed rolling cooperation.It is low that it is able to solve traditional valve rod guide frame guiding accuracy, guiding poor reliability, the disadvantages of use cost is high.
Description
Technical field
The present invention relates to a kind of ball valves for this, and in particular to a kind of unilateral guide frame of valve rod of forced seal ball valve.
Background technique
Forced seal ball valve is widely used in metering device, pump or the suction port of compressor and outlet of natural gas and gas
And the mixed degree of -80-280 DEG C of bypass, mole sieve drier system, low temperature washing device for methanol alternations frequently cutting, glycol dehydration dress
Set cutting and the cutting of coal chemical engineering equipment liquid-solid two-phase flow medium etc..The valve rod of forced seal ball valve is existing to mostly use orbital groove at present
Formula stem guiding structure, which mainly passes through the orbital groove on valve rod top and rack-mount guide pin controls, often
Two orbital grooves are usually arranged on the valve rod seen, the central axis of the cross section of two orbital grooves is about in valve rod central axis
The heart is symmetrical.When Open valve, valve rod is promoted first, and core swing disengages core with valve seat, and then valve rod continues to rise,
And interact with guide pin in valve rod orbital groove, drive core without frictional rotation to open position.When closing valve, valve rod
Sphere is driven to rotate in the case where not contacting valve seat, then valve rod continues to decline, the parallel lozenges and roller of valve rod lower end
Cooperation generates wedging power, and sphere is driven to compress valve seat, realizes valve seal.The guide frame of groove type valve rod is lacked there are following
Fall into: the two sides of track pin and the two sidewalls line or point contact of orbital groove simultaneously carry out sliding friction, the line contact portion of track pin
Position is fixed always, the head end line contact site serious wear of track pin, and the mating surface of orbital groove also will appear serious mill
Damage, track pin obtain gap with orbital groove side wall and become larger, and deviate the Angle Position of valve rod valve rod when turning to extreme position
Correct extreme position, and then core is made to be difficult to lock in correct extreme position, wedging power drives core to swing, and core exists
It is swung forward on the position of dislocation, after core is locked, the swing pressure of core is not according to design direction and size towards valve body
The sealing surface of sealing base, core is difficult to realize reliably seal with valve seal pedestal.And it is equal with orbital groove in track pin
In the state of abrasion, there are larger gap between valve rod and the cooperation of track pin, easily cause it is spacious dynamic on forward and backward direction,
Cooperation response between track pin and orbital groove is asynchronous, delay phenomenon occurs, carries the load that rotates and reverse in valve rod
When, valve rod can be staggered correct Angle Position.After guide frame failure, the track pin more renewed in time, this guiding are needed
Not only track pin use reliability is low for mode, and use cost is high.In addition, using this structure, helicla flute in use process
The unilateral head end abrasion aggravation with track pin after, there are the risks of frictional force drives track pin rotation, after track pin loosens, no
There is only guiding to fail, and there is also the risk of medium leakage.
Summary of the invention
In view of the deficiencies of the prior art, it is an object of the present invention to provide a kind of unilateral guiding knots of the valve rod of forced seal ball valve
Structure, it is low that it is able to solve traditional valve rod guide frame guiding accuracy, guiding poor reliability, the disadvantages of use cost is high.
The object of the present invention is achieved like this: a kind of unilateral guide frame of valve rod of forced seal ball valve, including valve deck,
Valve rod, the valve rod pass through the central bore of valve deck, and the central bore both ends of valve deck are stretched out at the valve rod both ends, the valve rod
One rotating forward limit track face, a reversion limit track face are at least set on shaft outer wall, and the rotating forward limit track face includes one
Limit helicoid is rotated forward, the upper end for rotating forward limit helicoid and head end rotate forward confined planes smooth transition, the reversion limit
Orbital plane includes that a reversion limits helicoid, and the reversion limit helicoid is identical as the limit lead of helicoid is rotated forward, described
The upper end of reversion limit helicoid and head end reversion confined planes smooth transition, the position in the valve deck inner sidewall respective carter face is set
Set the track pin extended to central bore, the setting of the front end of the track pin can free rolling rolling element, the rolling element
Outer surface be to roll cylindrical surface or the rolling circle conical surface, the side of the outer surface of the rolling element to keep with corresponding orbital plane
It often contacts and forms rolling cooperation.
The rolling element is the bushing of a front end for being nested with in-orbit road pin, and the outer surface setting of the bushing rolls cylindrical surface
Or circular conical surface.
Mounting hole is arranged in the valve deck side wall, matches in the mounting hole and unifies track pin free to rotate, the rolling
Body is structure as a whole with track pin, and the outer surface setting of the track pin front end rolls cylindrical surface or the rolling circle conical surface.
The mounting hole runs through valve deck side wall, and the mounting hole includes a ladder hole section, the path section of the ladder hole section
Aperture setting in bonnet central inner hole inner wall, with unification track pin in the ladder hole section, the track pin includes a ladder
The path shaft part of shaft part, the ladder shaft part puts in bonnet central inner hole, the ladder shaft part from the path hole section of ladder hole section
The front end outer wall of path shaft part formed and roll cylindrical surface or the rolling circle conical surface, the step side of the positioning shaft shoulder of the multi-diameter shaft
Face acts on the bottom hole of the major diameter hole section of ladder hole section, the path section setting of the major diameter shaft part or/and multi-diameter shaft of the multi-diameter shaft
Be slidably matched face outside, the interior face that is slidably matched that setting is slidably matched with the face of being slidably matched outside in the ladder hole section, the installation
A sealing bolt is arranged in the mouth end that hole is located at valve deck lateral wall, and the inner extending end of the sealing bolt carries out axial limit to track pin tail end
Position.
Pickup threaded hole is arranged in the track pin tail end.
Twice are set on the valve rod shaft outer wall about the centrosymmetric rotating forward limit track face of valve rod axial line；It is described
Twice are set on valve rod shaft outer wall about the centrosymmetric reversion limit track face of valve rod axial line.
The reversion limit track face is arranged in a staggered manner on the extending direction of valve rod axial line with limit track face is rotated forward,
The corresponding central angle of arc section on the circumferencial direction of valve rod between adjacent orbit face is pi/2.
The lower end for rotating forward limit track face and tail end left limit face seamlessly transit, under the reversion limit helicoid
End is seamlessly transitted with tail end right limit face.
Outwardly extending boss is set on the lateral wall of the valve deck, and the mounting hole is arranged along boss central axis.
The intersection of the cross section of the orbital plane and valve rod crosses the axle center of valve rod.
Using the above scheme, a rotating forward limit track face, a reversion limit are at least set on the shaft outer wall of the valve rod
Orbital plane, the rotating forward limit track face include that a rotating forward limits helicoid, the upper end for rotating forward limit helicoid and head end
Confined planes smooth transition is rotated forward, the reversion limit track face includes that a reversion limits helicoid, and the reversion limits helicoid
Upper end and head end reversion confined planes smooth transition, the position in the valve deck inner sidewall respective carter face, which is arranged to central bore, prolongs
The track pin stretched, the setting of the front end of the track pin can free rolling rolling element, the outer surface of the rolling element is to roll
Cylindrical surface or the rolling circle conical surface, the side of the outer surface of the rolling element keep often contacting and form rolling with corresponding orbital plane
Dynamic cooperation.Its advantages are as follows: a rotating forward limit track face, a reversion limit being at least arranged on the shaft outer wall of the valve rod
Orbital plane, at least orbital plane and the appearance face contact of the rolling element be simultaneously in different rotation directions at any time
Form synchronous rolling cooperation, orbital plane and rolling element cooperation are close, guiding movement response between track pin and orbital plane and
When be not in delay phenomenon, valve rod carry rotate and reverse load when, will not occur on forward and backward direction spacious
Dynamic, valve rod will not be staggered correct Angle Position.The rotating forward limit helicoid, reversion limit helicoid and the cooperation of rolling cylindrical surface
Valve rod can be driven to rotate, rotate core afterwards；Confined planes are inverted by head end or head end rotates forward confined planes and rolling circle
The cooperation of cylinder can be such that valve rod fixes in correct angular position, be not in that positive and negative rotation is swung during depressed stem.
The track pin extended to central bore is arranged in the position in the valve deck inner sidewall respective carter face, and the front end of the track pin is set
Rotatable rolling cylindrical surface is set, the rolling cylindrical surface keeps often contacting and being formed rolling cooperation with corresponding orbital plane, adopt
With the line contact site of the track pin of this structure with roll cooperation carry out can not stop to convert, the contact of the head end line of track pin
The head end of entire track pin is shared in abrasion, and using rolling cooperation, is conducive to reduce frictional force relative to being slidably matched, changes
Kind wear phenomenon.Using the present invention, the cooperation precision height of orbital plane and track pin makes valve rod be able to rotate correct Angle Position, in turn
Lock core in correct extreme position, after core is locked, the swing pressure of core is according to design direction and size towards valve
Body sealing base, the sealing surface and valve seal pedestal of core realize reliable sealing.Using the present invention, track pin and orbital plane
Service life greatly prolongs, track pin use reliability improves, and use cost is allowed to reduce.In addition, being eliminated using the present invention
The risk of frictional force drives track pins rotation not only reduces guiding failure risk, also reduces the risk of medium leakage.
The rolling element is the bushing of a front end for being nested with in-orbit road pin, and the outer surface setting of the bushing rolls cylindrical surface
Or circular conical surface, while rolling element, while bushing can be arranged under the mounting structure for simplifying track pin using this structure
It can be replaced upon wear, can reduce the use cost of replacement track pin.
Mounting hole is arranged in the valve deck side wall, matches in the mounting hole and unifies track pin free to rotate, the rolling
Body is structure as a whole with track pin, and the outer surface setting of the track pin front end rolls cylindrical surface or the rolling circle conical surface, track
The rotation of pin realizes the rolling of rolling element, using rotatable track pin, can effectively simplify matching for track pin and orbital plane
Structure is closed, reliability of structure is improved.
The mounting hole runs through valve deck side wall, and the mounting hole includes a ladder hole section, the path section of the ladder hole section
Aperture setting in bonnet central inner hole inner wall, with unification track pin in the ladder hole section, the track pin includes a ladder
The path shaft part of shaft part, the ladder shaft part puts in bonnet central inner hole, the ladder shaft part from the path hole section of ladder hole section
The front end outer wall of path shaft part formed and roll cylindrical surface or the rolling circle conical surface, the step side of the positioning shaft shoulder of the multi-diameter shaft
Face acts on the bottom hole of the major diameter hole section of ladder hole section, and track pin carries out radial limit by stepped hole, track pin is not in
Radial-play.The outer face that is slidably matched of path section setting of the major diameter shaft part or/and multi-diameter shaft of the multi-diameter shaft, the ladder hole section
The interior face that is slidably matched that interior setting is slidably matched with the face of being slidably matched outside, the mounting hole are located at the mouth end setting of valve deck lateral wall
The inner extending end of one sealing bolt, the sealing bolt carries out axial limiting to track pin tail end, so that track pin is existed using this structure
It is rotated in mounting hole, the rotation of track pin promotes non-eroded area and track face contact, can also be prevented using this structure close
Bolt rotation is sealed, the safety for improving entire guide frame is conducive to.
The track pin tail end is arranged pickup threaded hole, setting pickup threaded hole convenient for the drawing of later period track pin, rotation,
The operation such as replacement.
Twice are set on the valve rod shaft outer wall about the centrosymmetric rotating forward limit track face of valve rod axial line；It is described
Twice are set on valve rod shaft outer wall about the centrosymmetric reversion limit track face of valve rod axial line, using central symmetry knot
Structure can prevent valve rod shaft unilateral side stress deflection.
The reversion limit track face is arranged in a staggered manner on the extending direction of valve rod axial line with limit track face is rotated forward,
The corresponding central angle of arc section on the circumferencial direction of valve rod between adjacent orbit face is pi/2, can be allowed instead using this structure
Turn limit track face, rotate forward limit track face or track pin dispersed placement, to mitigate valve rod or valve deck strength reduction effect.
The lower end for rotating forward limit track face and tail end left limit face seamlessly transit, under the reversion limit helicoid
End is seamlessly transitted with tail end right limit face, and tail end left limit face and tail end right limit face, which is arranged, can be realized upward straight of valve rod
Line lifting motion.
Outwardly extending boss is set on the lateral wall of the valve deck, the mounting hole is arranged along boss central axis, if
Setting boss can be improved the intensity of mounting hole, can increase the installation space of track pin, while also can provide foot to sealing bolt
Enough installation spaces.
It using foregoing invention, can make that the staring torque of ball valve is small, running accuracy is high, traditional stem guiding knot can also be avoided
Structure guiding accuracy is low, guiding poor reliability, the disadvantages of use cost is high.
The present invention will be further explained below with reference to the attached drawings and specific examples.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of one embodiment of the invention；
Fig. 2 is A-A cross-sectional view in Fig. 1；
Fig. 3 is B-B cross-sectional view in Fig. 1；
Fig. 4 is the structural schematic diagram of valve rod in Fig. 1；
Fig. 5 is the structural schematic diagram of Fig. 1 middle orbit pin；
Fig. 6 is the mounting structure of second embodiment middle orbit pin of the invention；
Fig. 7 is the structural schematic diagram of Fig. 6 middle orbit pin；
Fig. 8 is the structural schematic diagram of mounting hole in Fig. 6.
In attached drawing, 10 be valve deck, and 11 be valve rod, and 12 be center inner hole, and 13 is rotate forward limit track face, and 14 be reversion limit
Orbital plane, 20 be track pin, and 24 be mounting hole, and 43 be sealing bolt, and 46 be pickup threaded hole, and 101 be boss, and 131 be rotating forward
Helicoid is limited, 132 rotate forward confined planes for head end, and 133 be tail end left limit face, and 141 be reversion limit helicoid, and 142 be head
End reversion confined planes, 143 be tail end right limit face, and 201 be lubricating channels, and 241 be ladder hole section, and 251 be major diameter shaft part, 252
It is positioning shaft shoulder for path shaft part, 253, a is rolling element, and b is the face that is slidably matched outside.
Specific embodiment
Referring to attached drawing, it will be described in specific embodiments of the present invention.
Referring to Fig. 1 to Fig. 5, the first embodiment of the unilateral guide frame of the valve rod of forced seal ball valve, forced seal ball
The unilateral guide frame of the valve rod of valve, including valve deck 10, valve rod 11, the valve rod 11 passes through the central bore 12 of valve deck 10, described
12 both ends of central bore of valve deck 10 are stretched out at 11 both ends of valve rod, and rotating forward limit is at least arranged on the shaft outer wall of the valve rod 11
Orbital plane 13, one inverts limit track face 14, the settable hole of the outer wall of the valve rod perhaps the fin hole or fin
Side wall may be configured as orbital plane；In the present embodiment, the hole is V-type groove-like structure, the friendship of the cross section of orbital plane and valve rod
Line crosses the axle center of valve rod, easy to process using this structure and low to the strength reduction degree of valve rod.Preferably, the valve rod
Twice are set on 11 shaft outer walls about the centrosymmetric rotating forward limit track face 13 of 11 axial line of valve rod；11 shaft of valve rod
Twice are set on outer wall about the centrosymmetric reversion limit track face 14 of 11 axial line of valve rod, using centrosymmetric structure, energy
Enough prevent 11 shaft unilateral side stress deflection of valve rod；The reversion limit track face 14 is with rotating forward limit track face 13 in 11 axis of valve rod
It is arranged in a staggered manner on the extending direction of heart line, the corresponding central angle of the arc section on the circumferencial direction of valve rod between adjacent orbit face
For pi/2, reversion limit track face 14, rotating forward limit track face 13 or track pin 20 can be allowed to disperse cloth using this structure
It sets, to mitigate 10 strength reduction effect of valve rod 11 or valve deck.The rotating forward limit track face 13 includes that a rotating forward limits spiral
Face 131, the upper end for rotating forward limit helicoid 131 and head end rotate forward confined planes 132 and seamlessly transit, the reversion limit track
Face 14 includes that a reversion limits helicoid 141, and the upper end of the reversion limit helicoid 141 and head end reversion confined planes 142 are flat
It slips over and crosses, the reversion limit helicoid 141 is identical as the limit lead of helicoid 131 is rotated forward；The rotating forward limit track face
13 lower end and tail end left limit face 133 seamlessly transit, the lower end and tail end right limit face of the reversion limit helicoid 141
143 smooth transitions, tail end left limit face 133 and tail end right limit face 143, which is arranged, can be realized the upward straight line of valve rod 11 and mentions
Elevator is dynamic, is drawn upwardly out valve rod from core, reduces flow resistance.The position in the 10 inner sidewall respective carter face of valve deck is set
Set the track pin 20 extended to central bore 12, the setting of the front end of the track pin 20 can free rolling rolling element a, this reality
The outer surface setting of the bushing for the front end that Shi Zhong, the rolling element a can be nested with in-orbit road pin 20 for one, the bushing rolls cylinder
Face or circular conical surface, the side of the outer surface of the rolling element a keep often contacting and being formed rolling cooperation with corresponding orbital plane.
If orbital plane be arranged on hole side wall, the rolling element between the inner wall for rolling the opposite side and hole of cooperation there are
Gap.If orbital plane be arranged in lugs side, the rolling element with roll the opposite side of cooperation and adjacent fin there are
Gap.Using bush structure, rolling element a can be arranged under the mounting structure for simplifying track pin 20, while bushing can also worn
After replaced, can reduce replacement track pin 20 use cost.The rolling element and corresponding track brought into linear contact, it is described
The included angle A that two of valve rod 11 are crossed respectively between the radially extending line for the contact line endpoints for rotating forward limit track face 13 can be institute
The included angle B stated between the radially extending line for the contact line endpoints that two of valve rod 11 cross reversion limit track face 14 respectively can be.
The present invention is not limited solely to above-described embodiment, referring to Fig. 6 to Fig. 8, valve described in second embodiment of the invention
Outwardly extending boss 101 is set on the lateral wall of lid 10, and mounting hole 24 is arranged in 10 side wall of valve deck, and the mounting hole 24 passes through
10 side wall of valve deck is worn, the mounting hole 24 is arranged along 101 central axis of boss, and mounting hole 24 can be improved in setting boss 101
Intensity can increase the installation space of track pin 20, while also can provide enough installation spaces to sealing bolt 43.The peace
It fills with track pin 20 free to rotate is unified in hole 24, the rolling element a is structure as a whole with track pin 20, the track pin
The outer surface setting of 20 front ends, which rolls cylindrical surface or the rolling circle conical surface, the rotation of track pin 20, realizes the rolling of rolling element a,
It using rotatable track pin 20, can effectively simplify the fit structure of track pin 20 Yu orbital plane, improve reliability of structure.
The setting of track pin 20 rolls the settable lubricating channels 201 of shaft part outer wall on cylindrical surface or the rolling circle conical surface or cuts flat with
Face is arranged this structure and is conducive to enhance lubricant effect, reduces friction effect.
In the second embodiment of the present invention, it is preferable that the mounting hole 24 may include a ladder hole section 241, the rank
The aperture setting of the path section of terraced hole section 241 is in 10 central bore of valve deck, 12 inner wall, the ladder hole section 241 with unification track
Pin 20, the track pin 20 include a ladder shaft part, the path of the path shaft part 252 of the ladder shaft part from ladder hole section 241
Hole section puts in 10 central bore 12 of valve deck, the front end outer wall of the path shaft part 252 of the ladder shaft part formed roll cylindrical surface or
Person's rolling circle conical surface, the step side of the positioning shaft shoulder 253 of the multi-diameter shaft act on the hole of the major diameter hole section of ladder hole section 241
Bottom, track pin 20 carries out radial limit by stepped hole, track pin 20 is not in radial-play.The big journal axle of the multi-diameter shaft
Section 251 or/and the outer face b that is slidably matched of the path section of multi-diameter shaft setting, the interior setting of the ladder hole section 241 and the face that is slidably matched outside
A sealing bolt 43 is arranged in the interior face that is slidably matched that b is slidably matched, the mouth end that the mounting hole 24 is located at 10 lateral wall of valve deck, should
The inner extending end of sealing bolt 43 carries out axial limiting to 20 tail end of track pin, makes track pin 20 in mounting hole 24 using this structure
Middle rotation, the rotation of track pin 20 promote non-eroded area and track face contact, and sealing spiral shell can be also prevented using this structure
Bolt 43 rotates, and is conducive to the safety for improving entire guide frame.Pickup threaded hole 46, setting is arranged in 20 tail end of track pin
Pickup threaded hole 46 is convenient for the operation such as drawing, rotation, replacement of later period track pin 20.
Using the above scheme, when carrying out ball valve opening and closing, runner is turned, when 11 stress of valve rod pushes, different rotation directions
On an at least orbital plane and the appearance face contact of the rolling element a and form synchronous rolling and cooperate, the line of rolling element a connects
Contact portion position with roll cooperation carry out can not stop to convert, orbital plane and rolling element a cooperation are close and valve rod 11 is driven to rotate, and make
Core rotation, the guiding movement response between track pin 20 and orbital plane is not in time delay phenomenon, is carried in valve rod 11
When the load rotated and reverse, will not occur on forward and backward direction spacious dynamic, valve rod 11 will not be staggered correct Angle Position.
The rotating forward limit helicoid 131, reversion limit helicoid 141 and the cooperation of rolling cylindrical surface can drive valve rod 11 to rotate, both
And rotate core；It can by the cooperation that head end inverts confined planes 142 or head end rotating forward confined planes 132 and rolling cylindrical surface
It fixes valve rod 11 in correct angular position, and carries out pushing linear motion, be not in just during valve rod 11 pushes
Inverted wobbles.Core reaches correct extreme position, and after core is locked, the swing pressure of core is according to design direction and size court
To valve seal pedestal, the sealing surface and valve seal pedestal of core realize reliable sealing.Using the present invention, track pin 20 and rail
The service life in road face greatly prolongs, 20 use reliability of track pin improves, and use cost is allowed to reduce.In addition, using this
Invention eliminates the risk of the rotation of frictional force drives track pin 20, not only reduces guiding failure risk, also reduces medium leakage
Risk., can be low to avoid conventional valve bar guide frame guiding accuracy using foregoing invention, it is oriented to poor reliability, use cost
The disadvantages of high.
Claims (10)
1. a kind of unilateral guide frame of valve rod of forced seal ball valve, including valve deck (10), valve rod (11), the valve rod (11) are worn
The central bore (12) of valve deck (10) is crossed, central bore (12) both ends of valve deck (10) are stretched out at valve rod (11) both ends, special
Sign is: a rotating forward limit track face (13), a reversion limit track face being at least arranged on the shaft outer wall of the valve rod (11)
(14), the rotating forward limit track face (13) includes that a rotating forward limits helicoid (131), and the rotating forward limits helicoid (131)
Upper end and head end rotate forward confined planes (132) smooth transition, the reversion limit track face (14) include one reversion limit spiral
Face (141), the reversion limit helicoid is identical as the limit lead of helicoid is rotated forward, and the reversion limits helicoid (141)
Upper end and head end reversion confined planes (142) smooth transition, the position in valve deck (10) the inner sidewall respective carter face be arranged to
The track pin (20) that central bore (12) extends, the setting of the front end of the track pin (20) can free rolling rolling element (a),
The outer surface of the rolling element (a) is to roll cylindrical surface or the rolling circle conical surface, the side of the outer surface of the rolling element (a) with
Corresponding orbital plane keeps often contacting and being formed rolling cooperation.
2. the unilateral guide frame of valve rod of forced seal ball valve according to claim 1, it is characterised in that: the rolling element
(a) the outer surface setting of the bushing for the front end for being nested with in-orbit road pin (20) for one, the bushing rolls cylindrical surface or circular conical surface.
3. the unilateral guide frame of valve rod of forced seal ball valve according to claim 1, it is characterised in that: the valve deck
(10) side wall setting mounting hole (24), the interior track pin (20) free to rotate with unification of the mounting hole (24), the rolling
Body (a) is structure as a whole with track pin (20), and the outer surface setting of track pin (20) front end rolls cylindrical surface or rolling
Circular conical surface.
4. the unilateral guide frame of valve rod of forced seal ball valve according to claim 3, it is characterised in that: the mounting hole
(24) run through valve deck (10) side wall, the mounting hole (24) include a ladder hole section (241), the ladder hole section (241) it is small
Unification track pin (20) is matched in the aperture setting of diameter section in valve deck (10) central bore (12) inner wall, the ladder hole section (241),
The track pin (20) includes a ladder shaft part, the path of the path shaft part (252) of the ladder shaft part from ladder hole section (241)
Hole section puts in valve deck (10) central bore (12), and the front end outer wall of the path shaft part (252) of the ladder shaft part forms rolling circle
The step side of cylinder or the rolling circle conical surface, the positioning shaft shoulder (253) of the multi-diameter shaft acts on the big of ladder hole section (241)
The bottom hole of diameter hole section, the outer face (b) that is slidably matched of path section setting of the major diameter shaft part (251) or/and multi-diameter shaft of the multi-diameter shaft,
The interior face that is slidably matched that setting is slidably matched with the face (b) that is slidably matched outside in the ladder hole section (241), the mounting hole (24)
One sealing bolt (43) are set positioned at the mouth end of valve deck (10) lateral wall, the inner extending end of the sealing bolt (43) is to track pin (20)
Tail end carries out axial limiting.
5. the unilateral guide frame of valve rod of forced seal ball valve according to claim 4, it is characterised in that: the track pin
(20) tail end setting pickup threaded hole (46).
6. the unilateral guide frame of valve rod of forced seal ball valve according to claim 1, it is characterised in that: the valve rod
(11) twice are set on shaft outer wall about the centrosymmetric rotating forward limit track face (13) of valve rod (11) axial line；The valve rod
(11) twice are set on shaft outer wall about the centrosymmetric reversion limit track face (14) of valve rod (11) axial line.
7. the unilateral guide frame of valve rod of -6 any forced seal ball valves according to claim 1, it is characterised in that: described
Reversion limit track face (14) is arranged in a staggered manner on the extending direction of valve rod (11) axial line with limit track face (13) are rotated forward,
The corresponding central angle of arc section on the circumferencial direction of valve rod between adjacent orbit face is pi/2.
8. the unilateral guide frame of valve rod of forced seal ball valve according to claim 1, it is characterised in that: the rotating forward limit
Position orbital plane (13) lower end and tail end left limit face (133) seamlessly transit, it is described reversion limit helicoid (141) lower end with
Tail end right limit face (143) smooth transition.
9. the unilateral guide frame of valve rod of forced seal ball valve according to claim 1, it is characterised in that: the valve deck
(10) it is arranged on lateral wall outwardly extending boss (101), the mounting hole (24) is arranged along boss (101) central axis.
10. the unilateral guide frame of valve rod of forced seal ball valve according to claim 1, it is characterised in that: the track
The intersection of face and the cross section of valve rod crosses the axle center of valve rod.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910657448.3A CN110242766B (en) | 2019-07-19 | 2019-07-19 | Valve rod unilateral guide structure of forced seal ball valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910657448.3A CN110242766B (en) | 2019-07-19 | 2019-07-19 | Valve rod unilateral guide structure of forced seal ball valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110242766A true CN110242766A (en) | 2019-09-17 |
| CN110242766B CN110242766B (en) | 2024-08-23 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910657448.3A Active CN110242766B (en) | 2019-07-19 | 2019-07-19 | Valve rod unilateral guide structure of forced seal ball valve |
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| Country | Link |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114321433A (en) * | 2022-03-17 | 2022-04-12 | 成都成高阀门有限公司 | Large-diameter forced sealing ball valve |
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| US4234157A (en) * | 1978-07-20 | 1980-11-18 | Daniel Valve Company | Lift-turn valve and actuator assembly |
| CN1492169A (en) * | 2002-10-23 | 2004-04-28 | 温州市瓯斯特阀门有限公司 | Pneumatic telescopic cock |
| CN201827422U (en) * | 2010-03-31 | 2011-05-11 | 张国臣 | Rotating cylinder ball valve |
| CN102313039A (en) * | 2010-06-29 | 2012-01-11 | 王姝 | Pressure direction-selecting seal ball valve or butterfly valve or plug valve |
| CN203309176U (en) * | 2013-06-20 | 2013-11-27 | 球豹阀门有限公司 | Rail-mounted hard seal ball valve |
| CN210265990U (en) * | 2019-07-18 | 2020-04-07 | 成都金陵能源装备有限公司 | Valve rod guide structure of forced sealing ball valve |
-
2019
- 2019-07-19 CN CN201910657448.3A patent/CN110242766B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4234157A (en) * | 1978-07-20 | 1980-11-18 | Daniel Valve Company | Lift-turn valve and actuator assembly |
| CN1492169A (en) * | 2002-10-23 | 2004-04-28 | 温州市瓯斯特阀门有限公司 | Pneumatic telescopic cock |
| CN201827422U (en) * | 2010-03-31 | 2011-05-11 | 张国臣 | Rotating cylinder ball valve |
| CN102313039A (en) * | 2010-06-29 | 2012-01-11 | 王姝 | Pressure direction-selecting seal ball valve or butterfly valve or plug valve |
| CN203309176U (en) * | 2013-06-20 | 2013-11-27 | 球豹阀门有限公司 | Rail-mounted hard seal ball valve |
| CN210265990U (en) * | 2019-07-18 | 2020-04-07 | 成都金陵能源装备有限公司 | Valve rod guide structure of forced sealing ball valve |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114321433A (en) * | 2022-03-17 | 2022-04-12 | 成都成高阀门有限公司 | Large-diameter forced sealing ball valve |
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| Publication number | Publication date |
|---|---|
| CN110242766B (en) | 2024-08-23 |
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