CN107013696A - Without abrasion prop open type ball surface gate valve - Google Patents
Without abrasion prop open type ball surface gate valve Download PDFInfo
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- CN107013696A CN107013696A CN201710458798.8A CN201710458798A CN107013696A CN 107013696 A CN107013696 A CN 107013696A CN 201710458798 A CN201710458798 A CN 201710458798A CN 107013696 A CN107013696 A CN 107013696A
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- valve
- valve plate
- locating shaft
- external member
- abrasion
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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
- F16K3/00—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing
- F16K3/02—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing with flat sealing faces; Packings therefor
- F16K3/029—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing with flat sealing faces; Packings therefor with two or more gates
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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
- F16K3/00—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing
- F16K3/02—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing with flat sealing faces; Packings therefor
- F16K3/12—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing with flat sealing faces; Packings therefor with wedge-shaped arrangements of sealing faces
- F16K3/14—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing with flat sealing faces; Packings therefor with wedge-shaped arrangements of sealing faces with special arrangements for separating the sealing faces or for pressing them together
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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
- F16K3/00—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing
- F16K3/30—Details
- F16K3/314—Forms or constructions of slides; Attachment of the slide to the spindle
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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
- F16K3/00—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing
- F16K3/30—Details
- F16K3/316—Guiding of the slide
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/20—Hydro energy
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Sliding Valves (AREA)
Abstract
The application is related to a kind of spherical gate valve, more particularly to a kind of without abrasion prop open type ball surface gate valve；It includes valve body；Connecting cavity provided with medium flow channel, medium flow pass and connection medium flow channel and medium flow pass in valve body, be provided with connecting cavity can vertically reciprocating slip valve plate assembly, valve plate assembly includes, valve element, suspension rod, preloading spring, locating shaft, guide limiting stopper, valve plate support backing board and valve plate external member.Due to implementing above-mentioned technical proposal, the application is outwards strutted by exercising valve plate external member under valve element along locating shaft, and it be the closing and unlatching that gate valve can be achieved that pressure or lift need to be only provided to valve rod, simple operation, it is corresponding it is rapid, save the time；Strutted in valve plate external member and in contraction process, have an orientation position-limiting action of locating shaft and guide-localization block, two valve plate external members operate steadily and its thickness knots modification is unaffected, it is adaptable to the gate valve of various bores.
Description
Technical field
The application is related to a kind of spherical gate valve, more particularly to a kind of without abrasion prop open type ball surface gate valve.
Background technology
The opening and closing element of gate valve is flashboard, and the direction of motion and flow direction of flashboard are perpendicular, and gate valve fluid resistance is small, opens
Close relatively labor-saving, sealing surface is small by medium erosion during standard-sized sheet, is not flowed to and is limited by medium, with double fluid to, structure length is smaller,
It is applied widely, available for fields such as metallurgy, oil, chemical industry, steel, electric power, with circulation is good, high temperature resistant the features such as.Pass
Two sealing pair requirement on machining accuracy of gate valve of system are higher, and during opening and closing, have Relative friction between sealing surface, easily cause
Phenomenon is abraded, very big difficulty is increased to processing, grinding and maintenance.
Current spherical gate valve emerging on the market is built-in with globe disk, and globe disk links with valve rod, and it passes through valve
After bar lifting in place, then rotary squeezing globe disk struts to realize sealing；Very big torsion is needed during rotation, when expending longer
Between, operating process is cumbersome, valve body is more heavy.
Chinese utility model patent, the patent No. 201620325606.7,《A kind of prop open type gate valve》One kind is disclosed to be not required to
Rotate, only by the i.e. achievable sealed flat seal gate valve of valve rod lifting, it mainly struts swash plate by descending extrude of wedge head
Sealing is realized, and realizes that swash plate is gathered by extension spring；Swash plate can not be accurately positioned and support during strutting, gathering with seal
The stroke open, gathered is very short, therefore sealing surface and valve body can only be simple plane extruding fits and realize sealing, sealing effectiveness
It is unsatisfactory；Valve body is also more heavy, especially when gate valve is larger, and the movement track of swash plate and seal is more difficult to control.
The content of the invention
The purpose of the application is to propose a kind of seal process simply, seals laborsaving, good sealing effect, manufacture, maintenance mans
Skill is simple, highly versatile without abrasion prop open type ball surface gate valve.
What the application was realized in：Without abrasion prop open type ball surface gate valve, it includes valve body；Flowed into valve body provided with medium
It is provided with and can hangs down in the connecting cavity of passage, medium flow pass and connection medium flow channel and medium flow pass, connecting cavity
The valve plate assembly directly reciprocatingly slided, valve plate assembly includes, valve element, suspension rod, preloading spring, locating shaft, guide limiting stopper, valve plate
Support backing board and valve plate external member；The valve rod for passing valve body is fixedly connected with the top of valve element；Suspension rod both sides are respectively and fixedly provided with locating shaft
And by positioning shaft sleeve equipped with the valve plate external member that can be slided along locating shaft axial reciprocating；Preloading spring is provided between valve element and suspension rod；
When preloading spring compresses, valve element presses valve plate external member and makes valve plate external member axially be strutted along locating shaft until forming close with valve body
Envelope；It is also associated with that guide limiting stopper of the valve plate external member along locating shaft axial shrinkage can be made when preloading spring resets on valve element.
Further, the rear and front end of valve element is respectively and fixedly provided with the inside of guide limiting stopper, guide limiting stopper has out provided with bottom
The chute that V-type is made up of both sides of mouth；The front end of valve plate external member is provided with and matched with the corresponding sides of the chute of front side guide limiting stopper
Draw runner, the rear end of valve plate external member is provided with the draw runner matched with the corresponding sides of the chute of rear side guide limiting stopper；Pass through left and right two
Matching is installed in chute individual draw runner jointly, and two guide limiting stoppers are installed on rear and front end and the valve of two valve plate external members respectively
Sleeve-board part is axially strutted with the relatively close of guide limiting stopper along locating shaft.
Further, suspension rod both sides are symmetrically fixed with horizontal locating shaft；Valve plate external member includes the inside being fixed together
Valve plate support, outside sphere valve plate；The center of valve plate support or sphere valve plate is provided with and matched with locating shaft and and locating shaft
Between leave the positioning hole in gap, by the cooperation of locating shaft and positioning hole, valve plate support and sphere valve plate are slidably mounted on
On locating shaft.
Further, the section frame of valve element in face where handstand isosceles trapezoid and two waists for can direction, bottom right to left down
Direction provides the pressure surface of pressure；Where the upright right-angled trapezium and oblique waist of the section frame of valve plate support at right angles in outside
Face is that can bear the pressure-bearing surface of pressure surface pressure；Face where the straight waist of two valve plate supports is parallel to each other and is fixed with parallel to each other
Sphere valve plate；Pressure surface is parallel to each other and corresponding laminating with pressure-bearing surface.
Further, sphere valve plate formed for two vertical parallel plane institute cut bodies and sphere valve plate outer face area
Less than inner face area, the land portions of the sphere valve plate are dynamic sealing face；Medium flow channel and the connecting place of connecting cavity,
Determine sealing surface in the oblique angle that medium flow pass and the connecting place of connecting cavity are respectively equipped with ring-type；When sphere valve plate edge positioning axial direction two
Side level is strutted, dynamic sealing face touch to oblique angle determine sealing surface when, it is tangent that sealing surface is determined in dynamic sealing face with oblique angle.
Further, boom foot is fixedly connected with backing board, and the upper surface of backing board is horizontal plane；Valve plate support
Base part seat is on backing board.
Further, the bottom of connecting cavity is provided with limiting stand being located at immediately below backing board and provided with arc groove；Bottom
The lower surface of supporting plate is convex under being and can match seat in the arc surface in limiting stand.
Further, the outside of guide limiting stopper, which is provided with vertical guiding rib, connecting cavity, is provided with corresponding with guiding rib
The guide groove matched somebody with somebody；Be installed on by guiding rib in guide groove, guide limiting stopper and valve element can vertically reciprocating slip setting connection
Intracavitary.
Further, the first dop is provided with the top of suspension rod, valve element bottom is provided with to be installed on the first dop interior and be available for
Hang the first neck that head is slided up and down；Stem bottom is provided with the second dop, be provided with the top of valve element by the second dop be installed in
Second neck.
Further, stem bottom is provided with the front upper spring opening through the second dop, and valve element is provided with the middle spring opening run through,
Lower spring hole is provided with the top of suspension rod, the front upper spring opening, middle spring opening and lower spring hole are coaxially corresponding and combination can equipped with one
Apply the preloading spring of pretightning force to valve rod and suspension rod.
Due to implementing above-mentioned technical proposal, the application is outwards strutted by exercising valve plate external member under valve element along locating shaft,
Under the constraint of locating shaft and guide limiting stopper, valve plate external member running orbit is fixed, stable movement, valve plate external member accurately with valve body shape
Into sealing；By exercising valve plate external member on guide limiting stopper along locating shaft to contract；, only need to be to valve rod during whole operation
It is the closing and unlatching that gate valve can be achieved, simple operation, corresponding rapid, saving time to provide pressure or lift；In valve plate external member
Strut and in contraction process, have an orientation position-limiting action of locating shaft and guide-localization block, two valve plate external members operate steadily and it
Thickness knots modification is unaffected, it is adaptable to the gate valve of various bores.
Brief description of the drawings：The concrete structure of the application is provided by following drawings and examples：
Fig. 1 is the dimensional structure diagram of the application most preferred embodiment；
Fig. 2 is the valve structural representation of the application along center section view in fully open state；
Fig. 3 is the collet panel seat structural representation of the application along center section view when limiting stand, valve plate external member are not strutted；
Fig. 4 collets panel seat structural representation of the application along center section view when limiting stand, valve plate external member are strutted completely；
Fig. 5 is the valve structural representation of the application along the cutting of draw runner position in fully open state；
Fig. 6 is the collet panel seat structural representation of the application along the cutting of draw runner position when limiting stand, valve plate external member are not strutted；
Fig. 7 collets panel seat structural representation of the application along the cutting of draw runner position when limiting stand, valve plate external member are strutted completely.
Legend：1. valve body, 2. medium flow channels, 3. medium flow pass, 4. connecting cavities, 5. valve elements, 6. valve rods, 7. hang
Bar, 8. preloading springs, 9. locating shafts, 10. guide limiting stoppers, 11. chutes, 12. draw runners, 13. valve plate supports, 14. sphere valve plates,
15. positioning hole, sealing surface is determined at 16. pressure surface, 17. pressure-bearing surfaces, 18. dynamic sealing faces, 19. oblique angles, 20. backing boards, and 21. is spacing
Platform, 22. guiding ribs, 23. guide grooves, 24. first dops, 25. first necks, 26. second dops, 27. second necks.
Embodiment：
The application is not limited by following embodiments, can determine specific reality according to the technical scheme and actual conditions of the application
Apply mode.
As shown in Fig. 1 to 7, no abrasion prop open type ball surface gate valve includes valve body；Medium flow channel, medium are provided with valve body
It is provided with and vertically reciprocating can slides in the connecting cavity of flow pass and connection medium flow channel and medium flow pass, connecting cavity
Valve element, be fixed with the valve rod for passing valve body at the top of valve element；Also include suspension rod, preloading spring, locating shaft, guide limiting stopper and valve
Sleeve-board part；Suspension rod both sides are respectively and fixedly provided with locating shaft and by positioning shaft sleeve equipped with the valve plate set that can be slided along locating shaft axial reciprocating
Part；Preloading spring is provided between valve element and suspension rod；When preloading spring compresses, valve element presses valve plate external member and makes valve plate external member along positioning
Axle is axially strutted until being sealed with the sealing surface formation of valve body；It is also associated with that when preloading spring resets valve plate set can be made on valve element
Guide limiting stopper of the part along locating shaft axial shrinkage.
When pressure, boom foot be not with valve body contact downwards for valve rod, preloading spring can provide pre- to valve element and suspension rod
Clamp force.When needing to close valve, downward pressure is applied by valve rod, valve rod, suspension rod, valve element, guide-localization block are integrally moved down,
After boom foot and valve body contact, valve rod continues traveling downwardly compression preloading spring；Now valve element is descending so that valve plate external member edge is fixed
Position axle is outwards strutted, and under the constraint of locating shaft and guide limiting stopper, valve plate external member running orbit is fixed, stable movement, valve plate
External member is accurately sealed with valve body formation.When needing Open valve, valve rod band movable valve plug and guide limiting stopper preparation is up, when to
After the pressure of lower application is removed, the pressure that both sides valve plate external member is strutted originally is eliminated, and on high-tension side valve plate external member is without pressure difference
In the case of easily separated with the sealing surface of valve body；Valve rod band movable valve plug continues up with guide limiting stopper, now by preloading spring
Pretightning force is acted on, and suspension rod is remained stationary as, and is forced valve plate external member to be shunk along locating shaft under guide limiting stopper effect, is overcome fluid pressure
The valve plate external member of low-pressure side can be drawn in along the center line level of valve channel until two valve plate external member thickness are minimum after difference；Valve
The sealing surface of sealing surface and valve body on sleeve-board part is vertical separation, whole separation process, and two sealing surfaces do not produce position
The friction of shifting property, will not produce abrasion, can reach no abrasion.Now valve rod continues up, in locating shaft and guide limiting stopper
Lower valve plate external member is constrained as suspension rod is up together.During whole operation, it only need to provide pressure to valve rod or lift can be real
The closing and unlatching of existing gate valve, simple operation, corresponding rapid, saving time；Strutted in valve plate external member with contraction process, having fixed
The orientation position-limiting action of position axle and guide-localization block, two valve plate external members operate steadily and its thickness knots modification is unaffected, fit
Gate valve for various bores.
As shown in Fig. 1 to 7, the rear and front end of valve element, which is respectively and fixedly provided with the inside of guide limiting stopper, guide limiting stopper, is provided with bottom
By the chute that V-type is made up of both sides of opening；The front end of valve plate external member is provided with the corresponding sides with the chute of front side guide limiting stopper
The draw runner of matching, the rear end of valve plate external member is provided with the draw runner matched with the corresponding sides of the chute of rear side guide limiting stopper；Pass through a left side
Matching is installed in chute right two draw runners jointly, and two guide limiting stoppers are installed on the rear and front end of two valve plate external members respectively
And valve plate external member is axially strutted with the relatively close of guide limiting stopper along locating shaft.It is relatively close in valve element and valve plate external member
When, i.e. during the thickness increase of two valve plate external members：Valve plate external member is strutted under valve element effect along locating shaft, now two cunnings
Bar in the chute of V-type relatively on it is sliding；Guide limiting stopper serves auxiliary positioning effect, it can be ensured that two valve plate external member Parallel Symmetrics
Strut.In valve element and valve plate external member relative separation, i.e. during the thickness of two valve plate external members reduces：The chute of V-type to
Upper motion, forces draw runner is relative in the chute of V-type to glide so that two valve plate external members are close to each other, guide limiting stopper is played
Master valve sleeve-board part shrinks effect.It is big even if the gauge variation of two valve plate external members because said structure is to be rigidly connected
Exactly can be accomplished, therefore structure is applied to the gate valve of various bores.
As shown in Fig. 1 to 7, suspension rod both sides are symmetrically fixed with horizontal locating shaft；Valve plate external member includes what is be fixed together
The valve plate support of inside, outside sphere valve plate；The center of valve plate support or sphere valve plate, which is provided with, to be matched with locating shaft and with determining
Position between centers leaves the positioning hole in gap, and by the cooperation of locating shaft and positioning hole, valve plate support and sphere valve plate are slidably pacified
On locating shaft.
As shown in Fig. 1 to 7, the section frame of valve element in face where handstand isosceles trapezoid and two waists for can to left down direction,
Lower right provides the pressure surface of pressure；The section frame of valve plate support is at right angles in the upright right-angled trapezium and oblique waist in outside
Place face is that can bear the pressure-bearing surface of pressure surface pressure；Face where the straight waist of two valve plate supports is parallel to each other and is fixed with mutually
Parallel sphere valve plate；Pressure surface is parallel to each other and corresponding laminating with pressure-bearing surface.Such top obtuse angle and valve element of valve plate support
Top acute angle be supplementary angle each other, valve element can be matched to press to both sides valve plate support, the valve plate support formation parallel relation of both sides,
Can strutting or shrink along locating shaft horizontal symmetrical.
As shown in Fig. 1 to 7, sphere valve plate formed for two vertical parallel plane institute cut bodies and sphere valve plate outer face
Area is less than inner face area, and the land portions of the sphere valve plate are dynamic sealing face；Medium flow channel and the phase of connecting cavity
At even, the connecting place of medium flow pass and connecting cavity is respectively equipped with the oblique angle of ring-type and determines sealing surface；When sphere valve plate edge is positioned
Axial both sides level is strutted, dynamic sealing face touch to oblique angle determine sealing surface when, it is tangent that sealing surface is determined in dynamic sealing face with oblique angle.
When sphere valve plate is along the axial both sides level of positioning is strutted, dynamic sealing face is touched when determining sealing surface to oblique angle, dynamic sealing face
Determine the sealing of sealing surface perpendicular contact with oblique angle, contact point is located at the middle part in dynamic sealing face；Accordingly even when valve element, valve plate support, fixed
The parts such as position axle, guide limiting stopper are deviated dynamic sealing face position caused by the error that mismachining tolerance, cooperation are produced, and also may be used
Ensure dynamic Gate-valve sealing performance；In addition in valve closing process, valve element and valve plate support can produce friction, pressure surface and pressure-bearing
Mutually wear and tear in face；During valve opening, the draw runner of valve plate support and the V-type chute of guide limiting stopper can produce phase attrition
Damage, the error that these abrasions are caused can also be determined this tangent cooperation of medium position of sealing surface and dynamic sealing face and be obtained by oblique angle
To elimination is made up, so that perfection ensure that Gate-valve sealing performance.
It is fixed on the sphere valve plate on the outside of valve plate support to be parallel to each other, sealing surface is determined in the dynamic sealing face and oblique angle that can make both sides
Vertical touches or separates；Touch or separation process in dynamic sealing face and oblique angle determine sealing surface and do not produce displacement friction,
Abrasion will not be produced, no abradable seal can be reached.
As shown in Fig. 1 to 7, boom foot is fixedly connected with backing board, and the upper surface of backing board is horizontal plane；Valve plate branch
The base part seat of frame is on backing board.The bottom of valve body connecting cavity is provided with limit being located at immediately below backing board and provided with arc groove
Position platform；The lower surface of backing board is convex under being and can match seat in the arc surface in limiting stand.
After boom foot and valve body contact, backing board is had been fixed in limiting stand, and valve rod continues traveling downwardly compression pretension bullet
Spring, valve element forces valve plate external member to be strutted along locating shaft to valve plate external member pressure；Because valve plate support support is seated on backing board,
It may insure that the center line of sphere valve plate and the center line of valve channel are consistent and will not changed.
As shown in Fig. 1 to 7, the outside of guide limiting stopper, which is provided with vertical guiding rib, connecting cavity, to be provided with and guiding rib pair
The guide groove that should be matched；Be installed on by guiding rib in guide groove, guide limiting stopper and valve element can vertically reciprocating slip setting
In connecting cavity.
As shown in Fig. 1 to 7, be provided with the first dop at the top of suspension rod, valve element bottom be provided with by the first dop be installed in and can
The first neck slided up and down for upper hoisting head；Stem bottom is provided with to be provided with the top of the second dop, valve element and is installed on the second dop
The second interior neck.
Quickly can effectively it be fitted together by each part of clamp, manufacture, maintenance process are simple, all parts can be with
Standard component is made, there is very strong versatility；The each shoe brake plate for eliminating conventional gate valve will be with the unique Corresponding matching of valve body, homotype
Number defect that can not be used with the valve plate of bore on other valve bodies, can be with the reduction processing of high degree, manufacturing cost.
As shown in Fig. 1 to 7, stem bottom is provided with the front upper spring opening through the second dop, and valve element is provided with being hit by a bullet for running through
Lower spring hole is provided with the top of spring hole, suspension rod, the front upper spring opening, middle spring opening and lower spring hole are coaxially corresponding and combination is equipped with one
It is individual to apply the preloading spring of pretightning force to valve rod and suspension rod.
Above technical characteristic constitutes the most preferred embodiment of the application, and it has stronger adaptability and optimal implementation effect
Really, inessential technical characteristic can be increased and decreased according to actual needs, the need for meeting different situations.
The use process of the application most preferred embodiment：
When gate valve is located at fully open state, as shown in Fig. 2,5：Preloading spring upper end heads on valve rod, and lower end withstands on suspension rod
On interior or locating shaft, valve rod fixing card plays valve element, and valve element bottom card plays suspension rod, and suspension rod bottom card plays backing board, valve plate
On the one hand support and sphere valve plate is positioned on locating shaft, is on the one hand located and is positioned on backing board, the draw runner of both sides is directed to
Limited block V-groove is constrained, and valve plate support is under the active force of preloading spring, and distance is most long between valve element and valve plate support, two balls
Thickness is most thin between the valve plate of face.
When valve is closed, as shown in Fig. 3,6：When valve rod glides under external force, valve plate center and valve channel are slided to
Center it is consistent when, i.e., when backing board is seated at the limiting stand of valve body, the center at the center and passage of valve plate support and sphere valve plate
Being consistent to change, and valve rod continues traveling downwardly compression preloading spring, in the valve element and the valve plate of right-angled trapezium of handstand isosceles ladder
Under the constraint of support, under the constraint of locating shaft, valve plate support and sphere valve plate are by parallel opening；It is when now valve rod is descending
Act on preloading spring, sealing surface is determined at the oblique angle that valve body is slowly vertically approached in the dynamic sealing face of sphere valve plate, and then two
Under the differential pressure action for holding medium, the sphere valve plate of low-pressure side is sealed in advance；Valve rod continues traveling downwardly compression preloading spring, and valve element is descending
The dynamic sealing face of on high-tension side sphere valve plate and the oblique angle of valve body is forced to determine sealing surface vertical seal, valve rod need not too large torque
Can be good by valve seal, and reach dual individual vertical sealing；Now distance is most short between valve element and valve plate support, two balls
Thickness is most thick between the valve plate of face.
During valve opening, as shown in Fig. 4,7：Valve rod is up, and band movable valve plug is up with guide limiting stopper, removes to valve plate branch
The pressure of frame, eliminates the pressure-bearing surface pressure for strutting the valve plate support of both sides originally, the dynamic sealing of high-pressure side sphere valve plate
Easily determine sealing surface vertical separation with the oblique angle of valve body in the case of without pressure difference in face；Now because the elastic force of preloading spring is made
With, backing board appoint so against, be seated on limiting stand, the center line of the center line and valve channel of valve plate support and sphere valve plate
It is consistent and will not changes；Due to guide limiting stopper as valve element rises, the V-groove on guide limiting stopper forces valve plate support
On draw runner occur it is relative slide so that valve plate support and the inside side of sphere valve plate are shunk, after pressure difference is overcome, the ball of low-pressure side
The dynamic sealing face of face valve plate can determine sealing surface vertical separation with the oblique angle of valve body, reach no abradable seal；Valve rod continues up,
Thickness contraction is to minimum between two sphere valve plates, when distance is maximum between valve element and valve plate support, the center line just meeting of sphere valve plate
Leave the center line of valve channel, valve element, valve rod, suspension rod, preloading spring, locating shaft, guide limiting stopper and the just meeting of valve plate external member
Moved up as an entirety, until valve is fully opened.
Claims (10)
1. it is a kind of without abrasion prop open type ball surface gate valve, including valve body；In valve body provided with medium flow channel, medium flow pass and
Connect be provided with the connecting cavity of medium flow channel and medium flow pass, connecting cavity can vertically reciprocating slip valve plate it is total
Into valve plate assembly includes, valve element, suspension rod, preloading spring, locating shaft, guide limiting stopper, valve plate support backing board and valve plate set
Part；The valve rod for passing valve body is fixedly connected with the top of valve element；Suspension rod both sides are respectively and fixedly provided with locating shaft and are equipped with by positioning shaft sleeve
The valve plate external member that can be slided along locating shaft axial reciprocating；Preloading spring is provided between valve element and suspension rod；When preloading spring compresses, valve element
Press valve plate external member and make valve plate external member axially be strutted along locating shaft until being sealed with valve body formation；It is also associated with valve element when pre-
Guide limiting stopper of the valve plate external member along locating shaft axial shrinkage can be made during tight spring reset.
2. it is according to claim 1 without abrasion prop open type ball surface gate valve, it is characterised in that：The rear and front end of valve element is fixed
Have on the inside of guide limiting stopper, guide limiting stopper provided with the chute that both sides is made up of V-type of the bottom by opening；The front end of valve plate external member
The draw runner matched provided with the corresponding sides with the chute of front side guide limiting stopper, the rear end of valve plate external member is provided with and rear side guide and limit
The draw runner of the corresponding sides matching of the chute of block；By the draw runner of left and right two, matching is installed in chute jointly, two guide and limits
Block be installed on the rear and front end of two valve plate external members respectively and valve plate external member with the relatively close of guide limiting stopper along positioning
Axle is axially strutted.
3. it is according to claim 1 or 2 without abrasion prop open type ball surface gate valve, it is characterised in that：Suspension rod both sides are symmetrically fixed
There is horizontal locating shaft；Valve plate external member includes the valve plate support for the inside being fixed together, outside sphere valve plate；Valve plate support
Or the center of sphere valve plate is provided with the positioning hole for being matched with locating shaft and gap being left with positioning between centers, passes through locating shaft and positioning
The cooperation in hole, valve plate support and sphere valve plate are slidably mounted on locating shaft.
4. it is according to claim 3 without abrasion prop open type ball surface gate valve, it is characterised in that：The section frame of valve element is in handstand
Face where isosceles trapezoid and two waists is direction, lower right can provide the pressure surface of pressure to left down；The section side of valve plate support
Face where the upright right-angled trapezium and oblique waist of frame at right angles in outside is that can bear the pressure-bearing surface of pressure surface pressure；Two valve plates
Face where the straight waist of support is parallel to each other and is fixed with sphere valve plate parallel to each other；Pressure surface is parallel to each other and right with pressure-bearing surface
It should fit.
5. it is according to claim 3 without abrasion prop open type ball surface gate valve, it is characterised in that：Sphere valve plate is two vertical flat
Row plane institute cut body is formed and the outer face area of sphere valve plate is less than inner face area, the land portions of the sphere valve plate
For dynamic sealing face；The connecting place of medium flow channel and the connecting place of connecting cavity, medium flow pass and connecting cavity is respectively equipped with
Determine sealing surface in the oblique angle of ring-type；When sphere valve plate is along the axial both sides level of positioning is strutted, dynamic sealing face is touched to oblique angle and determines sealing surface
When, it is tangent that sealing surface is determined in dynamic sealing face with oblique angle.
6. according to claim 1 or 2 or 3 or 5 or 6 without abrasion prop open type ball surface gate valve, it is characterised in that：Boom foot
Backing board is fixedly connected with, the upper surface of backing board is horizontal plane；The base part seat of valve plate support is on backing board.
7. it is according to claim 6 without abrasion prop open type ball surface gate valve, it is characterised in that：The bottom of connecting cavity, which is provided with, to be located at
Limiting stand immediately below backing board and provided with arc groove；The lower surface of backing board is convex under being and can match seat in limiting stand
Interior arc surface.
8. it is according to claim 2 without abrasion prop open type ball surface gate valve, it is characterised in that：The outside of guide limiting stopper is provided with
Provided with the guide groove with guiding rib Corresponding matching in vertical guiding rib, connecting cavity；It is installed in guide groove, is led by guiding rib
Can be in the setting connecting cavity of vertically reciprocating slip to limited block and valve element.
9. it is according to claim 1 without abrasion prop open type ball surface gate valve, it is characterised in that：Provided with the first card at the top of suspension rod
Head, valve element bottom is provided with is installed on the first neck that is interior and being available for upper hoisting head to slide up and down by the first dop；Stem bottom is provided with
It is provided with the top of second dop, valve element and the second dop is installed on to the second interior neck.
10. it is according to claim 6 without abrasion prop open type ball surface gate valve, it is characterised in that：Stem bottom is provided with through the
The front upper spring opening of two dops, valve element, which is provided with the top of the middle spring opening run through, suspension rod, is provided with lower spring hole, the front upper spring opening,
Middle spring opening and lower spring hole are coaxially corresponding and combination can apply the preloading spring of pretightning force equipped with one to valve rod and suspension rod.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710458798.8A CN107013696B (en) | 2017-06-16 | 2017-06-16 | Wearless expanding spherical gate valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710458798.8A CN107013696B (en) | 2017-06-16 | 2017-06-16 | Wearless expanding spherical gate valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107013696A true CN107013696A (en) | 2017-08-04 |
| CN107013696B CN107013696B (en) | 2023-04-18 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710458798.8A Active CN107013696B (en) | 2017-06-16 | 2017-06-16 | Wearless expanding spherical gate valve |
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| Country | Link |
|---|---|
| CN (1) | CN107013696B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114607784A (en) * | 2022-03-09 | 2022-06-10 | 北京真空电子科技有限公司 | Valve plate for isolation, driving device for driving valve plate and valve |
| CN114607784B (en) * | 2022-03-09 | 2024-06-04 | 北京真空电子科技有限公司 | Valve plate for isolation, driving device for driving valve plate and valve |
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| US4923171A (en) * | 1983-11-14 | 1990-05-08 | Foster Oilfield Equipment Company | Gate valve having a secondary seal |
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| CN106704618A (en) * | 2016-12-26 | 2017-05-24 | 凯喜姆阀门有限公司 | High-performance gate valve |
| CN207064671U (en) * | 2017-06-16 | 2018-03-02 | 洪德隆 | Without abrasion prop open type ball surface gate valve |
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| US4923171A (en) * | 1983-11-14 | 1990-05-08 | Foster Oilfield Equipment Company | Gate valve having a secondary seal |
| EP0241629A2 (en) * | 1986-04-17 | 1987-10-21 | NOVATEC S.r.l. | A gate valve with improved sealing |
| CN2934798Y (en) * | 2006-07-26 | 2007-08-15 | 胡金木 | Self-sealed double flat plate gate valve with diversion hole |
| CN101915319A (en) * | 2010-08-06 | 2010-12-15 | 浙江德卡控制阀仪表有限公司 | Parallel double-supporting plate gate valve |
| CN203363230U (en) * | 2013-06-27 | 2013-12-25 | 寿天泽 | Parallel-type double-gate-disc swinging gate valve |
| CN204403417U (en) * | 2014-12-30 | 2015-06-17 | 挺宇集团有限公司 | A kind of novel small-bore parallel double-flashboard gate valve |
| CN205559829U (en) * | 2015-12-03 | 2016-09-07 | 潘健 | -Modular formula body seals encircles removable slide valve |
| CN106704618A (en) * | 2016-12-26 | 2017-05-24 | 凯喜姆阀门有限公司 | High-performance gate valve |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114607784A (en) * | 2022-03-09 | 2022-06-10 | 北京真空电子科技有限公司 | Valve plate for isolation, driving device for driving valve plate and valve |
| CN114607784B (en) * | 2022-03-09 | 2024-06-04 | 北京真空电子科技有限公司 | Valve plate for isolation, driving device for driving valve plate and valve |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107013696B (en) | 2023-04-18 |
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Effective date of registration: 20190603 Address after: 239000 Room 102, No. 1, 1473 East Road, Chuzhou, Anhui. Applicant after: Anhui min Zhi Yu Valve Technology Co.,Ltd. Address before: 830000 Block C, 3rd Floor, Jinyang Building, Jinyang District, 416 Karamay West Road, Shayibak District, Urumqi City, Xinjiang Uygur Autonomous Region Applicant before: Hong Delong |
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