A kind of anti-sticking slide valve method of switching of same shaft locking and switching device
Technical field
The present invention relates to slide valve technical field more particularly to a kind of anti-sticking slide valve method of switching of same shaft locking and switch
Device.
Background technique
Slide valve is one of most common block valve at present, is mainly used to connect or be truncated the medium in pipeline, main to transport
Used in, the pipeline of major diameter.Existing slide valve, which is closed all, to be sealed using wedge-shaped clamp force, when gate valve is opened, due to close
Cover clamp force is big, in addition pressure difference before and after valve, easily makes gate valve bite, increases unlatching dynamics.Sealing surface is also easy to produce scratch simultaneously, opens
There is opposite sliding between two sealing surfaces that valve plate is in contact with valve seat when closing, be also easy to produce scratch under controlled valve when there is clamp force,
To destroy sealing performance, service life is influenced.
Summary of the invention
In order to solve the above-mentioned technical problem the present invention provides a kind of anti-sticking slide valve method of switching of same shaft locking, in conjunction with switch
Method provides switching device, and method of switching of the present invention is to carry out switch motion using two flashboards, when closed two flashboards
It falls behind position and completes slide valve closing motion to two side compressions, after two flashboards inwardly retract when opening and move upwards
Complete slide valve opening action.Traditional single ram seal mode two plates of monoblock type can be changed to using the above method to rise
Close envelope and gap slide up and down, that is, solve the problems, such as flashboard with valve body sealing surface abrasion bite, are slided by gap big
It is big to reduce the dynamics opened and scratch defect, while significantly improving the sealing effect of slide valve.
A kind of anti-sticking slide valve switching device of same shaft locking is provided according to above-mentioned method of switching, including valve rod, valve body and embedding
The flashboard being located in valve body, the flashboard are two, and the slide valve switching device includes flashboard lifting device and flashboard pressure
Tighten return device, the flashboard lifting device is fixedly connected with the upper end of valve rod, and the lower end of the valve rod is connect with flashboard, institute
Flashboard compression retracting device is stated to connect with flashboard.Flashboard lifting device can be realized using above-mentioned apparatus and flashboard compresses and retracts dress
It sets driving flashboard and completes switch motion in valve body.
Preferably, the flashboard lifting device includes cylinder I fixing seat, the cylinder that is fixedly connected with cylinder I fixing seat
I, or/and connector I, the piston rod of the cylinder I is connect with valve rod or the piston rod of the cylinder I passes through connector I and valve
Bar connection, it includes rotary pressing mechanism and its driving device I that the flashboard, which compresses retracting device, and the driving device I includes
Cylinder I I fixing seat, cylinder I I, rotating bar and the follower being fixedly connected with cylinder I I fixing seat, the rotating bar are " L "
One end of shape or inverted "L" shape, the rotating bar is fixedly connected with valve rod, and the other end of the rotating bar and follower activity connect
It connects, the follower is connect with the piston rod of the cylinder I I.
Flashboard lifting action can be completed using flashboard lifting device in above-mentioned advantageous measure, the cylinder I fixing seat and
Connector I flexible combination can fix and connect cylinder I as needed, the cylinder I can be used hydraulic cylinder, lifting motor and can
To realize that the actuator moved back and forth substitutes driving, and preferred rotary pressing mechanism and the cylinder I I of driving device I, rotating bar
With follower equally can as needed flexible combination complete switch motion, the cylinder I I equally can be used hydraulic cylinder, lifting
Motor and the actuator substitution driving that reciprocating motion may be implemented, connector of the follower between cylinder I I and rotating bar
Complete rotation and the sliding action of cylinder I I and rotating bar.
Preferably, being equipped with sealing lining between the lateral surface of described two flashboards and the lateral surface and valve body contact face
Set, the valve rod are embedded at valve body and are connected with end cap.
The sealing effect of flashboard and valve body is able to ascend using above-mentioned advantageous measure, while valve rod is connected to valve by end cap
Body guarantees the stability of its rotation and going on smoothly for adjustment, and the set-up mode of institute's seal cartridge and end cap is also convenient for later period replacement
Maintenance.
As an improvement, the rotary pressing mechanism include on the fixed elliptical shaft in valve rod lower end and two flashboards respectively symmetrically
The lug of fixed installation or the lug being fixedly mounted by adjusting pad, the elliptical shaft are equipped with annular groove, and described is convex
Ear is placed in annular groove, the inside brought into linear contact of the elliptical shaft and two flashboards, and the elliptical shaft is from short axle side
Pressure when rotating to long axis side between the medial surface of two flashboards is gradually increased.
Sealing means can be realized using above-mentioned measure and complete the sealing of monoblock type tensioner, the elliptical shaft by being flexibly connected
The lateral long axis side of short axle realize the opposite variation of ram position, while the medial surface shape of two flashboards can be set as needed
It sets realization to contact with oval axis, while wearing to come by adjusting pad caused by the oval shaft portion and lug of valve rod relatively rotate
It compensates abrasion loss, while the manufacturing cost of flashboard and convenient for safeguarding can reduce using screw connection, reach the fast velocity modulation of valve rod
Whole movement.
As a further improvement, the rotary pressing mechanism include valve rod lower end from bottom to up successively it is fixed have it is ellipse
The protrusion and annular protrusion of circular cross section are successively arranged on two flashboards from bottom to up and have oval cross section
The corresponding with annular protrusion groove of protrusion, described is raised corresponding on two flashboards with oval cross section
Groove-bottom brought into linear contact, described has the protrusion of oval cross section when rotating from short axle side to long axis side and two flashboards
Pressure between the groove floor of lower section is gradually increased.
Sealing means can be realized using above-mentioned measure and complete the sealing of monoblock type tensioner, the ellipse by being flexibly connected
The protrusion and annular protrusion of cross section realize the opposite variation of ram position, while corresponding groove floor on two flashboards
Line contact is connect with oval axis and is acted using the quick adjustment that the lateral long axis side effect of elliptical shaft short axle completes to reach flashboard.
Preferably, the rotary pressing mechanism includes the fixed elliptical shaft in valve rod lower end and servo-actuated set, it is described with
Dynamic set is three way type structure, and described two flashboards are equipped with protrusion corresponding with two coaxial openings of servo-actuated set, described
Servo-actuated set upper opening internal diameter be greater than positioned at opening valve rod outer diameter and be less than elliptical shaft long axis length, it is described
The protrusion inside brought into linear contact that is equipped with two flashboards being placed in servo-actuated set of elliptical shaft, the elliptical shaft is from short axle side
Pressure when rotating to long axis side between the raised medial surface that is equipped with of two flashboards is gradually increased.
Gate valve can be caused greatly for pressure difference clamp force before and after big flow pipeline sealing surface and valve using above-mentioned advantageous measure
The problem of opening great efforts promotes enhancing by servo-actuated set integral type and opens and closes linkage effect.
Further preferably, the flashboard lifting device include cylinder I fixing seat, the gas that is fixedly connected with cylinder I fixing seat
Cylinder I or/and connector I, the piston rod of the cylinder I connect with valve rod or the piston rod of the cylinder I by connector I with
Valve rod connection, it includes servo-actuated set I, upper end mandril, cylinder I II with frustum or bucking ladder solid that the flashboard, which compresses retracting device,
Reservation, the cylinder I II being fixedly connected with cylinder I II fixing seat or/and connector II, the piston rod of the cylinder I II and top
The lower end of bar is fixedly connected or the piston rod of the cylinder I II is fixedly connected by connector II with the lower end of mandril, described
Servo-actuated set I be three way type structure, two flashboards are equipped with the protrusion that can be placed in I two coaxial openings of servo-actuated set,
The raised outer end is inclined-plane or the inclined-plane with bucking ladder matching, the side and valve that the servo-actuated set I is not open
The lower end of bar is fixedly connected, and the mandril passes through the opening opposite with no opening side of the servo-actuated set I, described
The frustum or bucking ladder that the raised lateral surface that two flashboards are equipped with and the upper end of mandril have are that line contacts or face contact, described
Mandril when jacking up upwards, the pressure between raised lateral surface that the frustum or bucking ladder and two flashboards are equipped with
Power is gradually increased.
Above-mentioned lifting device can be borrowed using further preferred measure and complete flashboard lifting action, while described two
The raised outer end for being arranged described on flashboard is that inclined-plane or the inclined-plane to match with the bucking ladder can be compressed according to the flashboard of lower part
The different set-up modes and contact structures of retracting device combine its connection, the frustum or trapezoidal that the upper end of mandril as mentioned has
Platform is that line contact or face contact and other wedge structures complete switch motion, to realize the multiple combinations of its construction of switch
It completes integral type and promotes enhancing opening and closing linkage effect.
Further preferably, the valve rod is threadably secured with the servo-actuated set and connect, the valve rod and the servo-actuated set
Upper opening junction be equipped with check washer.The connection of servo-actuated set and valve rod and locking can be improved using further preferred measure
Effect.
Further preferably, sealing ring is equipped between the mandril and valve body lower end.It can be changed using further preferred measure
Into the sealing effect of mandril and valve body.
Detailed description of the invention
The present invention will be further described below with reference to the drawings.
Attached drawing 1 is main view of the invention.
Attached drawing 2 is top view of the invention.
Attached drawing 3 is side view of the invention.
Attached drawing 4 is valve body barrier gate structural schematic diagram of the invention.
Attached drawing 5 is 1 valve body barrier gate schematic diagram of internal structure of the embodiment of the present invention.
Attached drawing 6 is valve body valve rod rotational structure schematic diagram of the invention.
Attached drawing 7 is that 1 valve body valve rod of the embodiment of the present invention rotates schematic diagram of internal structure.
Attached drawing 8 is that valve body of the invention opens a sluice gate structural schematic diagram.
Attached drawing 9 is that 1 valve body of the embodiment of the present invention opens a sluice gate schematic diagram of internal structure.
Attached drawing 10 is 1 lug connecting installation structure schematic diagram of the embodiment of the present invention.
Attached drawing 11 is 2 valve body cross-sectional view of the embodiment of the present invention.
Attached drawing 12 is 3 valve body cross-sectional view of the embodiment of the present invention.
Attached drawing 13 is 4 valve body cross-sectional view of the embodiment of the present invention.
Shown in Fig. 1,2,3,4,5,6,7,8,9,10,11,12,13:
1- cylinder I, 2- cylinder I I, 3- fixed plate, 4- cylinder I fixing seat, 5- cylinder I I fixing seat, 6- rotating bar, 6.1-
Connector II, 7- valve rod, 8- nut, 9- thrust bearing, 10- stop pin, 11- screw rod, 12- feed screw nut, 13- flange face, 14-
Connector I, 15- follower, 16- valve body, 18- elliptical shaft, 18.1- circular shaft I, 18.2- circular shaft II, 19- flashboard, 19.1-
Flashboard I, 19.2- lug, 19.3- adjusting pad, 19.4- flashboard II, 19.5- flashboard III, the servo-actuated set of 20-, the servo-actuated set I of 20.1-,
21- check washer, 22- seal cartridge, 23- end cap, 24- mandril, 24.1- jogger hole, 24.2- sealing ring, 25- screw, 26- connect
Connect hole, 27- annular groove, 28- cylinder I II, 28.1- cylinder I II fixing seat 28.1.
Specific embodiment
In order to clarify the technical characteristics of the invention, being illustrated below by specific embodiment to this programme.
It is a kind of anti-sticking slide valve method of switching of same shaft locking first, the method for switching is to be opened using two flashboards
Pass movement, two flashboards fall behind position and complete slide valve closing motion to two side compressions when closed, two locks when opening
After plate inwardly retracts and move upwards completion slide valve opening action.
Referring to attached drawing 1-13, a kind of anti-sticking slide valve switching device of same shaft locking is provided according to above-mentioned method of switching, is wrapped
Valve rod 7, valve body 16 and the flashboard being embedded in valve body 16 are included, for the valve rod 7 using the form of straight-bar, the valve body 16 is on one
Under cavity structure, and be bolted by two valve casings, the opening two sides of the 16 cavity lower part of valve body are set respectively
There are flange face 13 and the respectively pipeline of external two sides discrepancy;The flashboard 19 is two, and the flashboard 19 is located under valve rod 7
Portion two sides, the preferably circular structure of the flashboard 19;A kind of same anti-sticking slide valve switching device of shaft locking includes flashboard liter
Falling unit and flashboard compress retracting device, and the flashboard lifting device is fixedly connected with the upper end of valve rod 7, the valve rod 7
Lower end is connect with flashboard 19, and the flashboard compresses retracting device and connect with flashboard 19.
The flashboard lifting device include cylinder I fixing seat 4, the cylinder I being fixedly connected with cylinder I fixing seat 41 or/and
Connector I14, the piston rod of the cylinder I 1 are connect with valve rod 7, or the piston rod of preferred cylinder I 1 passes through connector I14 herein
And the nut 8 that top is equipped with is connect with valve rod 7;It includes rotary pressing mechanism and its driving device that the flashboard, which compresses retracting device,
I, the driving device I include cylinder I I fixing seat 5, the cylinder I I2 being fixedly connected with cylinder I I fixing seat 5, rotating bar 6 and
Follower 15, the rotating bar 6 be L shape or inverted "L" shape can according to the direction of the installation position selection L shape of cylinder I I2,
It is herein preferably inverted "L" shape, cylinder I I2 is installed on 16 top of valve body;One end " horizontal segment " of the rotating bar 6 passes through valve rod 7
And be fixedly connected by stop pin 10, thrust bearing 9, the thrust bearing 9 are equipped between the rotating bar 6 and connector I14
Across valve rod 7, the other end " vertical section " of the rotating bar 6 is flexibly connected with follower 15, and the follower 15 is " rectangle
Frame " structure, the rotating bar 6 " vertical section " are inserted into the rectangle frame of follower 15;The follower 15 and the gas
The piston rod of cylinder II2 connects;Connection is promoted for the ease of the rotation of connector I14 and rotating bar 6 using this advantageous measure, it can
Stress hinders rotating bar 6 to rotate after preventing cylinder I 1 from retracting.The connector I14 completes lifting action by the driving of cylinder I 1,
The follower 15 completes rotational action by cylinder I I2 driving;The cylinder I 1 or cylinder I I2 are as the usable liquid of driver
Cylinder pressure, lifting motor and the actuator moved back and forth driving or substitution, and preferred rotary pressing mechanism and drive may be implemented
Cylinder I I2, rotating bar 6 and the follower 15 of dynamic device I equally flexible combination can complete switch motion, above-mentioned gas as needed
Cylinder I1, cylinder I I2 pass through screw rod 11, feed screw nut 12, fixed plate 3 and corresponding cylinder I fixing seat 4 and cylinder I I fixing seat 5
Connection locking, using above-mentioned measure can convenient for cylinder I 1, the position cylinder I I2 and be not only restricted to the fixed limitation of bolt, more
It is easily installed adjustment.
It is equipped with seal cartridge 22 between the lateral surface of described two flashboards and the lateral surface and 16 contact surface of valve body and leads to
It crosses connecting hole 26 to connect with fastener, the valve rod 7, which is embedded at valve body 16, is connected with end cap 23, the end cap 23 and 16 spiral shell of valve body
Line connection, above-mentioned connection type are common knowledge so doing corresponding mark not in the drawings.It can using above-mentioned advantageous measure
The sealing effect of flashboard and valve body 16 is promoted, while valve rod 7 is connected to the stability that valve body 16 guarantees its rotation by end cap 23
And what is adjusted goes on smoothly, the set-up mode of institute's seal cartridge 22 and end cap 2 is also convenient for later period replacement and safeguards.
Embodiment 1: referring to attached drawing 1-10
The rotary pressing mechanism include on the elliptical shaft 18 that 7 lower end of valve rod is fixed with and two flashboards 19 respectively symmetrically
The lug 19.2 of fixed installation or the lug 19.2 installed by adjusting pad 19.3 and screw 25, described its cross section of elliptical shaft 18
For oval structure;The elliptical shaft 18 is equipped with annular groove 27, and the lug 19.2 is placed in annular groove 27, described
Elliptical shaft 18 and two flashboards 19 inside brought into linear contact, the elliptical shaft 18 from short axle side to long axis side rotate when with
Pressure between the medial surface of two flashboards 19 is gradually increased, and be can be realized sealing means using above-mentioned measure and is passed through flexible connection
The sealing of monoblock type tensioner is completed, the lateral long axis side of the short axle of the elliptical shaft 18 realizes the opposite variation of 19 position of flashboard, together
When two flashboards 19 medial surface shape realization can be set as needed contacted with 18 line of elliptical shaft, two flashboards 19 are in annular groove
27 drives move up and down while elliptical shaft 18 corresponding lug 19.2 can rotate on two flashboards;And on elliptical shaft 18 and valve rod 7
The center overlapping of axles at end, so that the central axis of entire valve rod 7 is straight line, when valve rod 7 rotates, each section will not be eccentric;
The medial surface of flashboard 19 and the outer ring of elliptical shaft 18 cooperate: when rotating, 18 long axis of elliptical shaft of valve rod 7 is gradually connect with flashboard 19
Touch and wealthy flashboard 19 outward so that the sealing surface of two outer ends of flashboard 19 and valve body 16 close to and seal;When valve rod 7 rotates backward
When elliptical shaft 18 short axle set by long axis transition so that flashboard 19 and the sealing function of valve body 16 fade away, and flashboard 19 and valve
Activity surplus is equipped between the correspondence sealing surface of body 16 convenient for completing to move up and down;Lug 19.2 is detachable by screw 25 simultaneously
It is fixed on two flashboards, 19 inside, abrasion caused by 18 part of elliptical shaft of valve rod and lug 19.2 relatively rotate is by adjusting pad
19.3 compensate abrasion loss, while the manufacturing cost that can reduce flashboard and convenient for safeguarding is connected using screw 25, reach valve rod
Quick adjustment movement.
Embodiment 2: referring to attached drawing 11
The rotary pressing mechanism includes that 7 lower end of valve rod is successively fixed convex with oval cross section from bottom to up
Play 18.1 and annular protrusion, it is described fixed to be fixedly connected or dismantling connection, its cross section of the annular protrusion are oval structure,
It is successively arranged from bottom to up on two flashboards II 19.4 and protrusion 18.1 and annular protrusion with oval cross section
Corresponding groove, the described protrusion 18.1 with oval cross section and corresponding groove-bottom on two flashboards II 19.4
Brought into linear contact, the protrusion 18.1 with oval cross section from short axle side to long axis side rotate when with two flashboards II
Pressure between the groove floor of 19.4 lower sections is gradually increased.Sealing means can be realized using above-mentioned measure and pass through flexible connection
The sealing of monoblock type tensioner is completed, the protrusion 18.1 and annular protrusion of the oval cross section realize II 19.4 position of flashboard
Opposite variation, while corresponding groove-bottom brought into linear contact and oval axis connect and utilize elliptical shaft short axle on two flashboards II 19.4
The quick adjustment movement for reaching flashboard II 19.4 is completed in lateral long axis side effect.
Embodiment 3: referring to attached drawing 12
The rotary pressing mechanism includes the fixed circular shaft II 18.2 in 7 lower end of valve rod and is servo-actuated set 20, described fixed
To be fixedly connected or dismantling connection, preferably valve rod 7 are threadably secured with the servo-actuated set 20 and connect, the valve rod 7 with it is described
The upper opening junction of servo-actuated set 20 is equipped with check washer 21;Servo-actuated set 20 and valve rod can be improved using further preferred measure
7 connection and anti-loosing effect, the servo-actuated set 20 are three way type structure, and described two flashboards III 19.5 are equipped with and servo-actuated set
The 20 corresponding protrusion of two coaxial openings, the internal diameter of the upper opening of the servo-actuated set 20 are greater than the valve positioned at opening
The outer diameter of bar and be less than circular shaft II 18.2 long axis length, the circular shaft II 18.2 be placed in servo-actuated set 20 two
The protrusion inside brought into linear contact that a flashboard III 19.5 is equipped with, the circular shaft II 18.2 from short axle side to long axis side when rotating
The pressure between raised medial surface being equipped with two flashboards III 19.5 is gradually increased.It can be for big using above-mentioned advantageous measure
The problem of pressure difference clamp force causes greatly flashboard to open great efforts before and after flow conduit sealing surface and slide valve passes through servo-actuated 20 one of set
Formula promotes enhancing and opens and closes linkage effect.
Embodiment 4: referring to attached drawing 13
The flashboard lifting device include cylinder I fixing seat 4, the cylinder I being fixedly connected with cylinder I fixing seat 41 or/and
Connector I14, the piston rod of the cylinder I 1 is connect with valve rod 7 or the piston rod of the cylinder I 1 passes through connector I14 and valve
Bar 7 connects, and the flashboard lifting device content can obtain technical inspiration not in this reality in above-described embodiment 1-3 and respective figure
It applies in example and repeats, mainly following the description is annotated so not annotating attached drawing herein in attached drawing 13.The flashboard compresses contracting
Return device includes servo-actuated set I 20.1, lower end mandril 24, cylinder I II fixing seat 28.1 and cylinder with frustum or bucking ladder
The cylinder I II28 or/and connector II6.1, the piston rod of the cylinder I II28 and top that III fixing seat 28.1 is fixedly connected
The lower end of bar 24 is fixedly connected or the piston rod of the cylinder I II28 is fixed by connector II6.1 and the lower end of mandril 24
Connection, above-mentioned connection type are implemented to solve it will be understood by those of skill in the art that do not repeating herein using the prior art;Institute
The servo-actuated set I 20.1 stated is three way type structure, and two flashboards I 19.1, which are equipped with, can be placed in servo-actuated I 20.1 two, set together
Protrusion in axis opening, the raised outer end are inclined-plane or the inclined-plane with bucking ladder matching, the servo-actuated set I 20.1
The lower thread or mating connection of the side that is not open and valve rod 7, the mandril pass through the servo-actuated set I 20.1 with
For connecting mandril 24, the mandril 24 and valve body are equipped with the opposite opening jogger hole 24.1 in side that is not open between 16 lower end
Sealing ring 24.2 plays sealing and connection function.The sealing effect of mandril and valve body can be improved using further preferred measure.
The frustum or bucking ladder that the raised lateral surface that two flashboards I 19.1 are equipped with and the upper end of mandril 24 have contact for line
Or face contact, when the mandril 24 jacks up upwards, the frustum or bucking ladder are equipped with two flashboards I 19.1
Raised lateral surface between pressure be gradually increased.Above-mentioned lifting device can be borrowed using further preferred measure and pass through cylinder
III fixing seat 28.1, cylinder I II28 or/and connector II6.1 driving mandril 24 are gone up and down, while two flashboards I
The raised outer end for being arranged described on 19.1 is that inclined-plane or the inclined-plane to match with the bucking ladder can be according to the flashboards I 19.1 of lower part
It compresses the different set-up modes of retracting device and combines its connection with the contact structures of mandril 24, the cylinder I II28 is as drive
Dynamic device can be used hydraulic cylinder, lifting motor and the actuator moved back and forth driving or substitution may be implemented.Mandril as mentioned
The frustum or bucking ladder that 24 upper end has are that line contact or face contact and other wedge structures are completed flashboard I 19.1 and switched
Movement, to realize that the multiple combinations of its construction of switch complete integral type and promote enhancing opening and closing linkage effect.
Certainly, above description is also not limited to the example above, and technical characteristic of the present invention without description such as flashboard is gone up and down
The power source that device and flashboard compress retracting device can realize such as gas source air compressor, hydraulic by or using the prior art
Power source hydraulic station and electric power source etc., details are not described herein;Above embodiments and attached drawing are merely to illustrate technical side of the invention
Case be not be limitation of the present invention, described the invention in detail referring to preferred embodiment, this field it is common
Technical staff should understand that.In the above-described embodiments, preferred forms of the invention are described, it is obvious that in this hair
Many variations, modifications, additions or substitutions can be also made in bright essential scope, also should belong to claim protection model of the invention
It encloses.