CN207848470U - A kind of forced seal ball valve - Google Patents
A kind of forced seal ball valve Download PDFInfo
- Publication number
- CN207848470U CN207848470U CN201721597731.4U CN201721597731U CN207848470U CN 207848470 U CN207848470 U CN 207848470U CN 201721597731 U CN201721597731 U CN 201721597731U CN 207848470 U CN207848470 U CN 207848470U
- Authority
- CN
- China
- Prior art keywords
- valve
- ball
- pin
- valve rod
- gear
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Abstract
The utility model is related to a kind of forced seal ball valves, including valve body, valve seat, valve ball, valve rod and valve rod driving device, the valve ball is arranged in the valve body, the valve rod is arranged on the valve ball, the valve rod driving device is arranged in the valve rod upper end, the valve rod includes inner valve stem and outer valve rod, the valve ball includes valve ball matrix, flap and gear drive assembly, the valve rod drives valve ball reciprocating rotation between open and closed positions under the driving of valve rod driving device, the flap jacks up and the valve seat obvolvent when the valve ball matrix turns to closed position from valve body matrix.The beneficial effects of the utility model are, provide a kind of forced seal ball valve easy to operate, safe and reliable and small frictional force.
Description
Technical field
The utility model is related to a kind of forced seal ball valves.
Background technology
Using U.S.'s ORBIT valves as the conventional lift rod-type forced seal ball valve of representative, guided using poppet stem track
Design, although may be implemented, valve is contactless in switch whole most of the time and valve seat, and no friction is close with valve seat in valve ball
The cover last obvolvent stage is not truly realized friction-free rotary there are still opposite sliding friction；Its valve ball and valve base chamber it is strong
Obvolvent processed is pushed by the wedge-type face of valve rod and coordinates the collective effect of pivot under valve ball that could complete.Its action process is not flat enough
Surely, it is easy to be influenced by valve seat and pivot relative positional accuracy；Valve stem part and its assembly structure are complicated, are needed in switching process
It is superimposed Direct Travel and angle stroke motion；Requirement on machining accuracy is high；It is easy to happen valve rod leakage；Simultaneous Switching operating time mistake
It is long.
Following 6 kinds of forced seals ball valve valve-type is found altogether by China State Intellectual Property Office patent consulting：
1, application publication number：CN104295764A, application number：2014105008955：The design is synchronized using eccentric setting
The valve rod and sphere of rotation carry out opening/shutting valve.The design is substantially a kind of deformation design of eccentric-butterfly-valve, in valve ball and valve seat
The sealing surface last obvolvent stage, there are prodigious angle stroke motion vectors to produce relative sliding friction, is not truly realized nothing
Friction rotation；And since the action of closing is angle stroke, the obvolvent normal component of force of valve ball and valve base chamber is not high, sealing reliability
It can be affected with actual life.
2, application publication number：CN103727260A, application number：2014100163761：The design discloses a kind of ball valve,
More particularly to a kind of forced seal ball valve, it includes valve body, auxiliary valve body, sphere, valve seat, auxiliary valve body fluid line, the pair valve
There is stud nut drive-type forced seal device in body fluid line outer circle, there is flat key wherein between worm gear and active stud
It is connected, when active stud rotary motion, the keyway that slides axially of the driven nut mutually screwed with it can be made along auxiliary valve body fluid hose
Feather key on road makees axial linear movement, pressure caused by external can be made by pressure delivery system the valve seat in valve chamber
Required seal pressure is generated between sphere, low torque open and close and forced seal is realized, by automatic control system come complete
At stud nut drive-type forced seal device and Electric Actuator in open and close and seal process associated operation program.
The design uses two sets of operating mechanisms, the 90 degree of rotations of a set of operation valve ball, and another set of operating mechanism operation is referred to as paying valve
The part of body, driving valve seat cooperation valve ball complete obvolvent.The potential leak source of this design valve is more, complicated, valve volume swelling
It is swollen, it not necessarily disclosure satisfy that the face-to-face size of the valve of standard.
3, application publication number：CN103527809A, application number：2013105342621：The design includes valve body, valve deck, valve
Bar, wedge-type centrum and flap, it is characterised in that the body top is connected with valve deck, and the valve deck center of top is perpendicular by holder
It is straight to fix valve rod, the wedge-type centrum in the through-hole pin joint fixed valve body inner cavity that the stem bottom passes through valve deck center, with wedge-type
Centrum realizes linkage, i.e., promotion rotary motion is axially done along fixing axle；The body cavity bottom center is equipped with fixing axle vertically,
The fixing axle is adapted with the groove in wedge-type cone base center, and valve is fixed in body cavity bottom both ends by T-slot
Valve is respectively equipped with flap limiting device, the flap limit of the both sides on the top of the flap, the inner wall of body cavity both sides
The closely sealed connection in two side of device and wedge-type cone.The design and U.S.'s flap limiting device, the flap limit dress of the both sides
It sets and the closely sealed connection in the two side of wedge-type cone.The design enough realizes forced seal with the U.S., but due to using slidingtype flap
Component, valve flap in open position will be influenced by turbulent flow.Currently, this design is only applicable to low-pressure liquid operating mode
Using.
4, application publication number：CN102979929A, application number：2012105315085：The design include sphere, valve seat and
It is movable mounted on the seal ring seat to seal between sphere and valve seat, further include can along seal ring seat axially force push away
The hydraulic device of dynamic sealing ring seat, the hydraulic device be mounted on valve seat with it is close further include that can be pushed away along the axial pressure of seal ring seat
The hydraulic device of dynamic sealing ring seat, the hydraulic device are mounted between valve seat and seal ring seat.The design uses a set of hydraulic pressure
System presses to realize that forced seal, the hydraulic pressure leakage of valve and complicated mechanism can be influenced to the sealing ring between valve seat and valve ball
The sealing reliability of valve and service life.
5, application publication number：CN105370909A application numbers：2014104406033：There are two the opening and closing element tools of the design
Eccentric spherical structure, this eccentric structure so that two eccentric spherical surfaces are equal when valve rod drives opening and closing element to rotate
The movement along downstream valve seat and upstream valve seat axis direction is will produce, to generate the effect for compressing or loosening valve seat, in turn
Realize the forced seal of opening and closing element and downstream valve seat and upstream valve seat under particular valve position.The design valve will be by open position
The influence of turbulent flow, two eccentric spherical structures may influence valve reliability and service life because turbulent flow vibrations are impaired.
6, application publication number：CN104132157A, application number：2013101575904：The design is related to a kind of modularization and sets
The forced seal valve of angle stroke operation is counted, critical piece includes valve body, opening and closing element, valve deck, valve rod, valve seat, guide shell, valve seat
Support plate, guide shell support plate, operating mechanism and blowdown valve etc..Opening and closing element is arranged between valve seat and guide shell, convex surface and
Concave surface is that mutual eccentric spherical structure can by adjusting the relative position and their radius of convex spherical and concave sphere's center
To adjust the seal pressure when thickness of opening and closing element everywhere is in different valve positions with control valve between opening and closing element and valve seat, this makes
It obtains valve and forced seal may be implemented at certain valve positions.Therefore, which is not the forced seal ball valve in complete meaning.
In view of the above-mentioned problems, applicant Liu Xiaoqi has submitted Shen on May 26th, 2016 in China State Intellectual Property Office
It please publication No.：CN105927750A, application number：2016103554925 and patent name be a kind of patent of forced seal ball valve,
It uses pivoting valve ball and fixed seat design, be it is a kind of by spiral top pressure mechanism by a part for valve ball assembly,
It is exactly that valve ball sealing is jacked up and compressed towards valve seat direction to realize the technology of forced seal.The movement model of the valve ball matrix of valve
It encloses under by valve body that essence is limited at pivot, is accurately stopped on 90 degree of the position of the switch；Pass through the effect of torque spring, valve
Ball sealing surface other positions of the valve in addition to off-position with valve ball base shrinks and be locked together；To realize 90 degree of ball valve
Switch and sealing surface of seat friction-free rotary, while solving valve component existing for some current designs and being damaged by pipeline turbulent flow
The drawbacks of.Valve ball matrix the limit of pivot essence will be constrained and be stopped operating under by valve body, at this time valve operation after being directed at close stance
Rotation will rotate stud gear by one group of gear mechanism transmission being integrated on valve ball matrix, to smoothly top pressure valve
Ball sealing surface makes it with sealing surface of seat obvolvent simultaneously and compresses, and realizes that compulsory torque closes valve.
However, above-mentioned application publication number：CN105927750A, application number：2016103554925 and patent name be one kind
In the patent of forced seal ball valve：It is transmitted with realizing valve rod torque portions using the torque spring being arranged between valve rod and valve ball
It is synchronous with valve rod rotation when being rotated to make valve ball be closed at 90 degree to valve ball.Valve rod also forms with valve rod gear drive simultaneously
Cooperation, therefore, valve ball can be synchronous when closing rotation at 90 degree with valve rod gear.When valve ball is closed in place, pivot under valve ball
Limit by limit valve ball further rotate, and valve rod constantly closing direction rotation by driving stem gear relative to valve ball revolve
Turn, (torque spring can be compressed at this time, and valve ball is no longer rotated with valve rod), valve rod gear will drive pinion gear and then band
Dynamic stud gear rotation, is constrained by the screw-thread fit between stud gear and flap, and flap will be jacked up and valve seat obvolvent, realizes
Forced seal.In the ideal case, there is no flaws for above-mentioned action.But when the quickening of valve operation speed, pass through valve flowing channel
Velocity of medium it is very fast when, torque spring is not just too reliable relative to the servo-actuated rotation driving force of valve rod to valve ball.In addition, working as
Valve ball goes to off-position, and after valve ball is stopped operating by limit constraint, valve rod, which further compresses torque spring, will consume more torques.
On the other hand, above-mentioned application publication number：CN105927750A, application number：2016103554925 and patent name
In a kind of patent of forced seal ball valve, to use threaded engagement between flap and stud gear, when stud gear rotates, can incite somebody to action
Rotary motion is converted into moving along a straight line by threaded engagement, to realize forced seal.But in threaded engagement between screw thread mutually
Force of sliding friction it is very big.Although can reduce some frictions by using necessary antifriction material, effect is not fully up to expectations.
Utility model content
In view of the above-mentioned problems in the prior art, the main purpose of the utility model is to provide a kind of operation letters
Single, safe and reliable and small frictional force forced seal ball valve.
The technical solution of the utility model is such：
A kind of forced seal ball valve, including valve body, valve seat, valve ball, valve rod and valve rod driving device, the valve ball setting
In the valve body, the valve rod is arranged on the valve ball, and the valve rod driving device setting is described in the valve rod upper end
Valve rod includes inner valve stem and outer valve rod, and the valve ball includes valve ball matrix, flap and gear drive assembly, and the valve rod exists
Valve ball reciprocating rotation between open and closed positions is driven under the driving of valve rod driving device, the flap is in the valve
It is jacked up and the valve seat obvolvent from valve body matrix when ball matrix turns to closed position.
The valve rod driving device includes turbine babinet, turbine, worm screw and turbine case lid, the turbine and the worm screw
It is meshed and is arranged in the turbine box body, the turbine case lid is arranged in turbine babinet upper end, the outer valve rod
Upper end and the turbine form driving cooperation.
It is provided with inner valve stem drive block and limited block above the turbine, wherein：
The inner valve stem drive block is between the turbine upper surface and the limited block lower surface, the turbine case lid
On be provided with annular first positioning hole, the limited block is fixedly connected by first positioning hole with the turbine case lid, and institute
The position relationship for stating limited block and the inner valve stem drive block is adjusted by the first positioning hole；
The first limited block and the second limited block are respectively arranged on the limited block, for limiting inner valve stem drive block
Rotation angle range be 90 °, the upper end of the inner valve stem and the inner valve stem drive block form driving cooperation, the inner valve stem
Stopper protrusion corresponding with first limited block or the second limited block, the inner valve stem driving are provided on drive block
It is provided with pin via hole on block, pin is provided in the pin via hole；
The lower surface of the limited block is provided with the first positioning groove, the upper end of the pin and first positioning groove
It matches, the turbine upper surface is provided with the second positioning groove, and the pin of second positioning groove and the pin lower end
Follow closely matching ends.
The rotational travel of the valve ball matrix is 90 °, and the gear drive assembly includes valve rod gear, intermediate drive gear
And stud gear, the stud gear form threaded engagement with the flap；The stud gear rotation drives flap ejection
And withdrawal, the stud gear, intermediate drive gear and the engagement of valve rod gear constitute transmission；The outer valve rod lower end and institute
It states valve rod gear and forms driving cooperation, band ovable valve stem gear rotates when the outer valve rod rotates.
The inner valve stem lower end forms driving cooperation with the valve ball baseline top, and the outer valve rod is set in the internal valve
Outside bar.
The flap matches realization forced seal with the valve seat being arranged in the valve body, and the stud gear passes through roller
Device and the flap rotatable engagement, the roller unit include roller rolling retainer and along the circumferentially distributed rolling of roller rolling retainer
Column, the roller are meshed with the stud gear screw thread and the flap screw thread simultaneously.
The outer valve rod is coaxially disposed with the inner valve stem.
The pin is shuttle-type pin, and the shuttle-type pin includes pin body and is arranged at the pin body both ends
Dowel ends, the shape of the pin body is cylinder, and the shape of the dowel ends at the pin body both ends is circle
Platform shape.
The pin is shuttle-type pin, and the shuttle-type pin includes pin body and is arranged at the pin body both ends
Dowel ends, the shape of the pin body is prismatic, and the shape of the dowel ends at the pin body both ends is rib
Platform shape.
The utility model has the following advantages and beneficial effect：The forced seal ball valve of the utility model, in operation ball valve
When only need switch that rotary worm can realize that valve ball is rotated by 90 ° and valve ball to jack up flap and the work(of tightening in off-position
Energy.In addition, for flap spiral top pressure part, roller is arranged between flap screw thread and the stud screw thread of stud gear, it will
Original sliding friction is changed to rolling friction, reduces valve operation torque.Meanwhile the cloth between stud gear and valve ball matrix
Ball has been set, the friction between stud gear and valve ball matrix is reduced.
Description of the drawings
Fig. 1 is the configuration schematic diagram for the forced seal ball valve that the utility model embodiment provides；
Fig. 2 is the cutting structural schematic diagram for the forced seal ball valve that the utility model embodiment provides；
Fig. 3 is the local cutting structural schematic diagram for the forced seal ball valve that the utility model embodiment provides；
Fig. 4 is turbine, inner valve stem drive block, pin and limit in the forced seal ball valve that the utility model embodiment provides
The structural schematic diagram of position block；
Fig. 5 is the structure of inner valve stem drive block and limited block in the forced seal ball valve that the utility model embodiment provides
Schematic diagram；
Fig. 6 is the structural representation of turbine and inner valve stem drive block in the forced seal ball valve that the utility model embodiment provides
Figure；
Fig. 7 is that stud gear and the matched structure of flap are shown in the forced seal ball valve that the utility model embodiment provides
It is intended to；
Fig. 8 is the structural schematic diagram of roller unit in the forced seal ball valve that the utility model embodiment provides；
Fig. 9 is valve ball matrix in the forced seal ball valve that the utility model embodiment provides, stud gear and flap
Assembling structure schematic diagram；
Figure 10 is the enlarged structure schematic diagram of turbine case lid in the forced seal ball valve that the utility model embodiment provides.
Reference numeral in figure is as follows：
1, valve body；2, first positioning hole；3, valve seat；
4, valve body bolt；5, valve ball matrix；6, stud gear pressure ring；
7, stud gear；8, flap；9, valve rod gear；
10, intermediate drive gear；11, valve upper cover；12, valve rod upper cover；
14, intermediate drive gear valve deck；15, outer valve rod；16, inner valve stem；
17, roller；18, roller rolling retainer；19, turbine babinet；
20, turbine；201, the second positioning groove；21, worm screw；
23, inner valve stem drive block；231, pin via hole；232, stopper protrusion；
24, pin body；241, dowel ends；25, limited block；
251, the first positioning groove；252, the first limited block；253, the second limited block；
27, turbine case lid；28, handwheel；30, lock-screw.
Specific implementation mode
It is new below in conjunction with this practicality to keep the purpose, technical scheme and advantage of the utility model embodiment clearer
Attached drawing in type embodiment, the technical scheme in the utility model embodiment is clearly and completely described, it is clear that is retouched
The embodiment stated is the utility model a part of the embodiment, instead of all the embodiments.Usually here described in attached drawing and
The component of the utility model embodiment shown can be arranged and be designed with a variety of different configurations.Therefore, below to attached
The detailed description of the embodiments of the present invention provided in figure is not intended to limit claimed the scope of the utility model,
But it is merely representative of the selected embodiment of the utility model.Based on the embodiments of the present invention, ordinary skill people
The every other embodiment that member is obtained without creative efforts belongs to the model of the utility model protection
It encloses.
It is in the description of the present invention, it should be noted that term "center", "upper", "lower", "left", "right", " perpendicular
Directly ", the orientation or positional relationship of the instructions such as "horizontal", "inner", "outside" is to be based on the orientation or positional relationship shown in the drawings, and is only
The utility model and simplifying describes for ease of description, do not indicate or imply the indicated device or element must have it is specific
Orientation, with specific azimuth configuration and operation, therefore should not be understood as limiting the present invention.In addition, term " the
One ", " second ", " third " are used for description purposes only, and are not understood to indicate or imply relative importance.
In the description of the present invention, it should also be noted that, unless otherwise clearly defined and limited, term " is set
Set ", " installation ", " connected ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection,
Or it is integrally connected；It can be mechanical connection, can also be electrical connection；It can be directly connected, intermediary can also be passed through
It is indirectly connected, can be the connection inside two elements.It for the ordinary skill in the art, can be according to specific feelings
Condition understands the concrete meaning of above-mentioned term in the present invention.
Relational language is explained
Valve rod：Valve top part operates the axis of the transmission torque of valve；The utility model be equipped with inside and outside two layers of valve rod, respectively with
Valve ball is connected with valve rod gear；
Valve seat：Main seal member on valve, with realizing sealing after valve ball obvolvent；The utility model is using fixed valve
Seat；
Valve ball matrix：The part of carrier gear transmission group and flap in the utility model；
Flap：The component with valve base sealing is realized on valve ball；
Valve rod gear：The gear to form transmission is connect with valve rod；
Stud gear：The gear to form threaded engagement is connect with flap；
Intermediate drive gear：The gear to form transmission system is engaged with valve rod gear and stud gear；
Valve body：The casing part of valve；
Side-mounted ball valve：Valve hole part is installed from the side the ball valve form in valve body；
Top-loading ball valve：Valve hole part is installed to the ball valve form in valve body from top；
Full side welded ball valve：Valve body seam has used all-welded ball valve form；
Turbine box：Valve top part connect the mechanism for realizing that torque transmits with valve rod.Mainly by babinet, turbine, worm screw, limit
Block, inner valve stem drive block, shuttle-type pin are constituted.
Turbine：It connect with outer valve rod, and is engaged in worm screw, the component driven by outer valve rod driving stem gear；Turbine
Upper surface be equipped with notch, coordinate with shuttle-type pin bottom end, moving synchronously for inner valve stem drive block and turbine can be locked.
Inner valve stem drive block：Driving cooperation is formed with inner valve stem top, the rotation of torque drive valve ball can be transmitted by inner valve stem
The component turned；The component is equipped with the through-hole of shuttle-type pin.
Limited block：It is connect with turbine box head cover, by the protrusion limitation inner valve stem drive block fortune for being distributed in an angle of 90 degrees both ends
Dynamic component；The component lower surface is equipped with round table-like groove, coordinates, it can be achieved that inner valve stem drive block with shuttle-type pin top
Move locking；
Shuttle-type pin：Both ends are in coniform, and centre is columned pin, is mounted on the pin via hole of inner valve stem drive block
It is interior, in different operating process, moved up and down as shuttle.It, can be with the circle of top limited block lower surface when moving up
Mesa-shaped groove coordinates, and realizes the locking to inner valve stem drive block and limited block；It, can be with the notch of turbine upper surface when moving down
Cooperation, realization inner valve stem drive block and turbine move synchronously locking
The utility model is further described with specific embodiment below with reference to accompanying drawings.
As shown in Figures 1 to 10：The forced seal ball valve of the utility model embodiment, including valve body 1, valve seat 3, valve ball,
Valve rod and valve rod driving device, the valve ball be arranged in the valve body and 1 upper end of the valve body by valve upper cover 11 into
Row sealing, valve upper cover 11 are fastenedly connected by valve body bolt 4 with valve body, and the valve rod is arranged on the valve ball, the valve
Rod driving device is arranged in the valve rod upper end, and the valve rod includes inner valve stem 16 and outer valve rod 15, and the valve ball includes valve
Ball matrix 5, flap 8 and gear drive assembly, the valve rod drive valve ball in open position under the driving of valve rod driving device
The reciprocating rotation between closed position is set, the flap 8 is when the valve ball matrix turns to closed position from valve body matrix
It jacks up and 3 obvolvent of the valve seat.
The valve rod driving device includes turbine babinet 19, turbine 20, worm screw 21 and turbine case lid 27, the turbine 20
It is meshed and is arranged in the turbine babinet 19 with the worm screw 21, and the one end of the worm screw 21 far from the turbine 20
It is fixedly connected with handwheel 28 through the turbine babinet 19, the turbine case lid 27 is arranged in 19 upper end of turbine babinet, institute
It states the upper end of outer valve rod 15 and the turbine 20 forms driving cooperation.
20 top of the turbine is provided with inner valve stem drive block 23 and limited block 25, wherein：The inner valve stem drive block
23 between 25 lower surface of 20 upper surface of the turbine and the limited block, and the of annular is provided on the turbine case lid 27
A positioning hole 2, the limited block 25 are fixedly connected by lock screw 30 and first positioning hole 2 with the turbine case lid 27, and
The limited block 25 and the position relationship of the inner valve stem drive block 23 are adjusted by the first positioning hole 2；The limit
Position block 25 is respectively arranged with the first limited block 252 and the second limited block 253 on outer edge, for limiting inner valve stem driving
The rotation angle range of block 23 is 90 °, and the upper end of the inner valve stem 16 forms driving cooperation with the inner valve stem drive block 23；Institute
State be provided on 23 outer edge of inner valve stem drive block it is opposite with first limited block 252 or second limited block 253
The stopper protrusion 232 answered is provided with pin via hole 231 on the inner valve stem drive block 23, is provided in the pin via hole 231
Pin；The lower surface of the limited block 25 is provided with the first positioning groove 251 of truncated cone-shaped, the upper end of the pin and described the
One positioning groove 251 matches, and 20 upper surface of the turbine is provided with the second positioning groove 201 of annular, and described second is fixed
The madial wall of position groove 201 is matched with the dowel ends 241 of the pin lower end.
The rotational travel of the valve ball matrix 5 is 90 °, and the gear drive assembly includes valve rod gear 9, intermediate transmission tooth
Wheel 10 and stud gear 7, setting intermediate drive gear valve deck 14 on the intermediate drive gear 10, the stud gear 7 with
The flap 8 forms threaded engagement；The rotation of stud gear 7 drives the ejection of flap 8 and withdraws, the stud gear 7,
Intermediate drive gear 10 and the engagement of valve rod gear 9 constitute transmission；15 lower end of outer valve rod and the valve rod gear 9 formation
Driving cooperation, band ovable valve stem gear 9 rotates when the outer valve rod 15 rotates.
16 lower end of the inner valve stem forms driving cooperation with 5 top of the valve ball matrix, and the outer valve rod 15 is set in institute
It states outside inner valve stem 16.
The flap 8 matches realization forced seal with the valve seat 3 being arranged in the valve body 1, and the stud gear 7 passes through
Roller unit and 8 rotatable engagement of the flap, the roller unit include roller rolling retainer 18 and along roller rolling retainer 18 weeks
To the roller 17 of distribution, internal thread of the roller 17 respectively with the external screw thread of the stud gear 7 and the flap 8 is mutually nibbled
It closes；The thread form of the roller 17 is identical as the external screw thread of the stud gear and the thread form of internal thread of the flap 8, described
The thread form of roller 17 is the annular groove without helix angle, and the outer spiral shell of the annular groove spacing of the roller 17 and the stud gear 7
Line is identical with the screw pitch of the internal thread of the flap 8.
The outer valve rod 15 is coaxially disposed with the inner valve stem 16.
The pin is shuttle-type pin, and the shuttle-type pin includes pin body 24 and is arranged in the pin body 24
The shape of the dowel ends 241 at both ends, the pin body 24 is cylinder, the dowel ends at 24 both ends of the pin body
241 shape is truncated cone-shaped；In addition, the shape of the pin body 24 be alternatively it is prismatic, as long as its both ends can be distinguished
It is matched with the first positioning groove 251 and the second positioning groove 201.
According to the above, we will be described in valve ball from fully open position to closed positions, then from closed positions to complete
The realization of open position process and the in the process state and position relationship of each part.
When valve ball is in fully open position, the second positioning groove of turbine upper surface and the shuttle-type pin of inner valve stem drive block
Through-hole is aligned.The second positioning groove is inserted into shuttle-type pin lower end, and upper end flushes with pin via hole upper edge, and with limited block lower surface
Contact.Limited block lower surface is plane at this time, constrained, and pin can not move up and be maintained at and be inserted into the second positioning groove shape
State.When operation worm screw drives worm screw to rotate valve ball to closing direction at this time, round table surface of second positioning groove towards pin lower end
The torque of transmission can simply resolve into two parts moment of components, a part in rotational direction, a part along pin axially upwards.
Block lower surface will be limited along the power of pin axially upwards to block, therefore, pin can not move up.And power in rotational direction
Inner valve stem drive block will be driven to be rotated together with turbine, valve ball entire in this way will be rotated to close stance jointly under tightening state.
Since such rotation is the contactless friction-free rotary of sealing surface, required torque is simultaneously little.It is arrived when valve ball rotates 90 degree
When up to off-position, limited block lower surface cone-shaped groove is just aligned with the pin via hole on inner valve stem drive block, while limited block
Blocking also just block inner valve stem drive block and make it that can not be rotated further.At this time shuttle-type will be pushed along the component of pin axis direction
Pin, which moves up, to be made in its top conical shape partial insertion limited block lower surface cone-shaped groove.In this way, the lower end of shuttle-type pin will
It is contacted with turbine upper surface, constrained, shuttle-type pin would be held in the state for being inserted into limited block lower surface groove.Thus will
Inner valve stem drive block (namely valve ball matrix) is limited in off-position, continues revolving wormgear, and outer valve rod will be rotated relative to inner valve stem,
With regard to band ovable valve stem gear and pinion gear and the rotation of stud gear, the roller transmission kinematic constraint that is threaded through on stud gear arrives
On flap internal thread, to make flap be jacked up in the case of face off-position (namely valve seat).It is final to realize that pressure is close
Seal obvolvent.
It reversely rotates worm screw and drives turbine that will enter valve opening process.At this point, pin is remained inserted into limited block lower surface
The first positioning groove in, lower end by turbine plane constraint cannot move down.Therefore, inner valve stem (namely valve ball) position is still
It is constrained on closed positions.And the rotation of turbine will only drive an outer valve rod to rotate, and by intermediate drive gear and stud gear,
It transmits rotary movement on flap internal thread, flap will be retracted until tightening is on valve ball matrix completely.At this point, flap will
Therefore stop motion, threaded rotational movement also stop, forming stud gear, intermediate drive gear, the valve rod tooth of transmission chain therewith
The rotary motion of wheel and outer valve rod with respect to valve ball stops, and continues revolving wormgear, valve ball will be by with together with trend valve opening position
Rotation to drive inner valve stem, and then drives inner valve stem drive block to be rotated together with trend valve opening position.At this point, turbine upper table
Second positioning groove in face is aligned with the pin via hole of inner valve stem drive block.By the first positioning groove and pin of limited block lower surface
The constraint of the end contact face at end is nailed on, pin will move down, and inner valve stem drive block is made to be unlocked with limited block.In this way, valve ball
It will be without frictionally being rotated to fully open position, until inner valve stem drive block is limited block and is hindered in open position in the case where flap is tightened
It keeps off, at this time valve ball standard-sized sheet.
During flap is by jack-up and withdrawal, originally by between the stud on stud gear and flap inner bolt hole
Screw-thread fit realizes the linear motion conversion of the rotary motion of stud to flap.Too due to the sliding friction between screw thread
Greatly, the utility model is provided with roller between stud and flap inner bolt hole.It is specific as follows：Roller is cylinder, is equipped with above
Annular groove.Annular groove spacing is identical as the screw pitch of stud and screw hole.Thread form is also identical.Roller annular spread is in stud screw thread and screw hole spiral shell
Between line, and engaged simultaneously with both sides screw thread.Therefore, the height of roller in the axial direction is distributed in ladder ascending manner.Roller is protected
It holds frame constraint and keeps axial axially parallel with stud and screw hole, constitute planetary roller layout.It therefore, can will be between original screw thread
Sliding friction is transformed into the rolling friction between roller and stud and flap inner bolt hole.
The ball being abound with similar to ball screw type is equipped with shown in Fig. 9, between stud gear and valve ball matrix.Ball is located at
In ball grooves, rotation and revolution with the rotation of stud gear, and form self-loopa.Thus will be between stud gear and valve ball matrix
Friction is changed to rolling friction.
The forced seal ball valve of the utility model embodiment, by original torque spring structure rigidly turbine and worm case
Add shuttle-type pin feature to replace, keeps the transmission of ball valve torque in switching process more direct and reliable.In addition, when ball valve reaches
After off-position, the jack-up part of flap, it is no longer necessary to torque spring is further compressed, to improve transmission efficiency.In addition, planet
Roller structure substitutes original direct screw-thread fit, and mechanical efficiency of flap when by jack-up and withdrawal is made also to greatly improve.It is comprehensive
Altogether, torque needed for the switch of ball valve has more than 50% promotion, with obvious effects.
The valve body of the utility model embodiment can be side-mounted, or forms such as full welding；It can be symmetrically arranged valve seat,
Flap, stud gear, planetary roller and pinion gear, it is Bidirectional seal structure to make valve.
Finally it should be noted that：Above-described each embodiment is merely to illustrate the technical solution of the utility model, rather than
It is limited；Although the utility model is described in detail with reference to the foregoing embodiments, those skilled in the art
It should be understood that：It can still modify to the technical solution recorded in previous embodiment, or to which part or whole
Technical characteristic carries out equivalent replacement；And these modifications or substitutions, it does not separate the essence of the corresponding technical solution the utility model
The range of each embodiment technical solution.
Claims (5)
1. a kind of forced seal ball valve, it is characterised in that：Including valve body, valve seat, valve ball, valve rod and valve rod driving device, institute
It states valve ball to be arranged in the valve body, the valve rod is arranged on the valve ball, and the valve rod driving device is arranged in the valve
Bar upper end, the valve rod include inner valve stem and outer valve rod, and the valve ball includes that valve ball matrix, flap and gear drive are total
At the valve rod drives valve ball reciprocating rotation between open and closed positions, institute under the driving of valve rod driving device
Flap is stated to jack up and the valve seat obvolvent from valve body matrix when the valve ball matrix turns to closed position；
The valve rod driving device includes turbine babinet, turbine, worm screw and turbine case lid, and the turbine is mutually nibbled with the worm screw
Close and be arranged in the turbine box body, turbine case lid setting in turbine babinet upper end, the outer valve rod it is upper
End forms driving cooperation with the turbine；
It is provided with inner valve stem drive block and limited block above the turbine, wherein：
Between the turbine upper surface and the limited block lower surface, the turbine box covers to be set the inner valve stem drive block
It is equipped with the first positioning hole of annular, the limited block is fixedly connected by first positioning hole with the turbine case lid, and the limit
The position relationship of position block and the inner valve stem drive block is adjusted by the first positioning hole；
The first limited block and the second limited block are respectively arranged on the limited block, the rotation for limiting inner valve stem drive block
Ranging from 90 ° of gyration, the upper end of the inner valve stem form driving cooperation, the inner valve stem driving with the inner valve stem drive block
Stopper protrusion corresponding with first limited block or the second limited block is provided on block, on the inner valve stem drive block
It is provided with pin via hole, pin is provided in the pin via hole；
The lower surface of the limited block is provided with the first positioning groove, and the upper end of the pin matches with first positioning groove
It closes, the turbine upper surface is provided with the second positioning groove, and the pin end of second positioning groove and the pin lower end
Portion matches；
The rotational travel of the valve ball matrix be 90 °, the gear drive assembly include valve rod gear, intermediate drive gear and
Stud gear, the stud gear form threaded engagement with the flap；The stud gear rotation drives flap ejection and receives
It returns, the stud gear, intermediate drive gear and the engagement of valve rod gear constitute transmission；The outer valve rod lower end and the valve
Bar gear forms driving cooperation, and band ovable valve stem gear rotates when the outer valve rod rotates；
The flap matches realization forced seal with the valve seat being arranged in the valve body, and the stud gear passes through roller unit
With the flap rotatable engagement, the roller unit includes roller rolling retainer and along the circumferentially distributed roller of roller rolling retainer,
The roller is meshed with the stud gear screw thread and the flap screw thread simultaneously.
2. forced seal ball valve according to claim 1, which is characterized in that the inner valve stem lower end and the valve ball matrix
Driving cooperation is formed on top, and the outer valve rod is set in outside the inner valve stem.
3. forced seal ball valve according to claim 1, which is characterized in that the outer valve rod is coaxially set with the inner valve stem
It sets.
4. forced seal ball valve according to claim 1, which is characterized in that the pin is shuttle-type pin, the shuttle-type
Pin includes pin body and dowel ends at the pin body both ends is arranged, and the shape of the pin body is cylinder
The shape of shape, the dowel ends at the pin body both ends is truncated cone-shaped.
5. forced seal ball valve according to claim 1, which is characterized in that the pin is shuttle-type pin, the shuttle-type
Pin includes pin body and dowel ends at the pin body both ends is arranged, and the shape of the pin body is prism
The shape of shape, the dowel ends at the pin body both ends is prismatic table shape.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721597731.4U CN207848470U (en) | 2017-11-24 | 2017-11-24 | A kind of forced seal ball valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721597731.4U CN207848470U (en) | 2017-11-24 | 2017-11-24 | A kind of forced seal ball valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207848470U true CN207848470U (en) | 2018-09-11 |
Family
ID=63422695
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721597731.4U Expired - Fee Related CN207848470U (en) | 2017-11-24 | 2017-11-24 | A kind of forced seal ball valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207848470U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107763240A (en) * | 2017-11-24 | 2018-03-06 | 淄博沃泰斯石化设备有限公司 | A kind of forced seal ball valve |
| CN109373009A (en) * | 2018-12-20 | 2019-02-22 | 武汉海王科技有限公司 | A kind of naval vessel ball valve limit switch instruction device |
-
2017
- 2017-11-24 CN CN201721597731.4U patent/CN207848470U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107763240A (en) * | 2017-11-24 | 2018-03-06 | 淄博沃泰斯石化设备有限公司 | A kind of forced seal ball valve |
| CN109373009A (en) * | 2018-12-20 | 2019-02-22 | 武汉海王科技有限公司 | A kind of naval vessel ball valve limit switch instruction device |
| CN109373009B (en) * | 2018-12-20 | 2023-09-29 | 武汉海王科技有限公司 | Limit switch indicating device for ship ball valve |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107763240A (en) | A kind of forced seal ball valve | |
| US10859169B2 (en) | Valve seat driven forced seal ball valve | |
| WO2017202151A1 (en) | Forced seal ball valve | |
| EP2499411B1 (en) | Electric actuators having internal load apparatus | |
| CN201141445Y (en) | Bidirectional hard-sealing non-abrasion rail butterfly valve | |
| CN207848470U (en) | A kind of forced seal ball valve | |
| US8636262B2 (en) | Coupling apparatus for use with electric actuators | |
| CN107191614A (en) | A kind of forced seal ball valve with scroll spring arrangement of clutch | |
| WO2019149290A1 (en) | Valve base driven forced sealing ball valve | |
| EP3800386B1 (en) | Planetary roller threaded device capable of being restored by means of holder | |
| CN101586523B (en) | Noncircular planetary gear hydraulic motor | |
| US10920893B2 (en) | Cage reset planetary roller screw device | |
| CN202674339U (en) | Butt-weld bidirectional pressing hard seal butterfly valve | |
| CN210600231U (en) | Non-rising stem flat valve without flange and bolted connection valve cover structure | |
| RU159493U1 (en) | SHUT-OFF CONTROL BALL VALVE | |
| CN105473920B (en) | Valve operator component with compensation actuator | |
| JP3110000B2 (en) | Rotary valve drive | |
| CN201486743U (en) | Noncircular planetary wheel hydraulic motor | |
| CN210423769U (en) | Plug valve for high-voltage high-frequency secondary occasion | |
| CN209762307U (en) | Valve rod lifting type track ball valve with high sealing performance | |
| CN113251168B (en) | Fine actuator and valve | |
| CN1034192C (en) | Double-gate type rotary valve | |
| CN2434496Y (en) | Three lead screw type pipeline blankoff flange valve | |
| CN215673754U (en) | Check valve | |
| CN203115257U (en) | Straight tooth cylindrical gearing transmission stop valve |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180911 Termination date: 20191124 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |