CN106369213B - Hydraulic rotating actuator for opening and closing butterfly valve - Google Patents
Hydraulic rotating actuator for opening and closing butterfly valve Download PDFInfo
- Publication number
- CN106369213B CN106369213B CN201510599759.0A CN201510599759A CN106369213B CN 106369213 B CN106369213 B CN 106369213B CN 201510599759 A CN201510599759 A CN 201510599759A CN 106369213 B CN106369213 B CN 106369213B
- Authority
- CN
- China
- Prior art keywords
- valve
- rotary shaft
- piston
- cylinder
- connector
- 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
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/12—Actuating devices; Operating means; Releasing devices actuated by fluid
- F16K31/122—Actuating devices; Operating means; Releasing devices actuated by fluid the fluid acting on a piston
-
- 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
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
- F16K1/32—Details
- F16K1/34—Cutting-off parts, e.g. valve members, seats
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Actuator (AREA)
- Mechanically-Actuated Valves (AREA)
- Lift Valve (AREA)
- Indication Of The Valve Opening Or Closing Status (AREA)
- Fluid-Driven Valves (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
Abstract
The present invention relates to a kind of hydraulic rotating actuator for being used to open and close butterfly valve.The hydraulic rotating actuator includes cylinder；Piston, it has axis hole and is inserted into the cylinder；Rotary shaft, it is inserted into axis hole, and the rotary shaft is configured to correspond to the vertically reciprocating movement of piston and rotated on forward and reverse, and with spline connection groove on its lower end；Upper lid, it is connected to the top of the cylinder, is inserted by the upper end of the upper lid rotary shaft；Lower cover, it is connected to the bottom of the cylinder, passes through the bottom insertion of the lower cover rotary shaft；And valve connector, it is inserted into the rotary shaft to be engaged with the spline connection groove spline in rotary shaft, and the valve shaft end of butterfly valve is assemblied in valve connector.
Description
Technical field
The present invention relates to a kind of hydraulic rotating actuator, it is used to open and close butterfly valve more particularly, to a kind of
Hydraulic rotating actuator, it is connected with the exposed portion of the valve shaft of butterfly valve and is configured to rotate butterfly by using hydraulic pressure
The valve shaft of valve is to open and close the butterfly valve.
Background technology
In general, valve is used to control flow rate, flow velocity, pressure of the fluid for flowing through conduit etc..As various types of
One example of the valve of type, butterfly valve is used for many industrial circles, especially for control fluid, such as industrial water, oil, seawater
Deng flowing so as to being stopped or maintain.Compared with other types of valve, butterfly valve has smooth opening/closing operation, structure
The advantage of simple and good space availability ratio.
It is used to supply the valve body in the conduit (not shown) of fluid as shown in figure 1, general butterfly valve 10 includes being arranged on
11st, the valve disc 12 that is rotatably installed in the valve body 11 to open and close conduit and it is connected to the valve disc 12 to revolve
Turn the valve shaft 13 of the valve disc 12, and the valve shaft 13 has the one end exposed outside the valve body 11.Exposed by rotation in valve
Valve shaft 13 outside body 11, the valve disc 12 for being connected to the valve shaft 13 rotates, so as to realize opening/closing operation.
For rotary valve shaft 13, rotating driving device is arranged on valve body 11.Revolving force is passed through dynamic by various power sources
Power gear unit is delivered to valve shaft 13.For example, the power source can be the artificial operation of the workman for rotating handles, electronic horse
Reach, hydraulic actuator, pneumatic actuator etc..The revolving force produced by the power source is delivered to valve shaft by power transfer unit
13.The power transfer unit can be embodied as the engagement of multiple gears, kinematic chain etc..
It is use that rubber butterfly valve disclosed in Korean Patent Publication publication No. 10-2002-0003769, which is configured to its power source,
In the artificial operation of the workman of rotating handles, and the power transfer unit is the engagement of multiple gears.Korean Patent Registration
It is electro-motor that the actuator for rotary valve disclosed in number 10-0482906, which is configured to its power source, and the power is passed
It is worm gear to pass unit.However, artificial rotating handles has many limitations to Effec-tive Function naturally.In addition, using electro-motor
In the case of, if the power needed for operation valve needs the electro-motor with Large Copacity and size than larger, this can cause as
Lower problem, that is, cause whole device increase, and wiring and gear engagement structure become complicated.
In order to solve these problems, hydraulic rotating actuator is used at present, and it has fast response time, and uses liquid
It is pressed in small space and generates relatively high moment of torsion.Configuration hydraulic rotating actuator enables piston back and forth to be moved by hydraulic linear
Move, and the linear movement is passed to the output shaft being connected with the piston and is converted in rotary moving.The rotation changed is moved
The dynamic valve shaft 13 for being passed to butterfly valve 10, so as to open and close the valve disc 12 of butterfly valve 10.
Hydraulic rotating actuator is mostly using hydraulic pressure as power source, and by pinion and rack or scotch yoke mechanism
(scotch-yoke mechanism) is used as power transfer unit.As shown in Fig. 2 pinion and rack 20 includes a pair of settings
Cylinder 21 on the left and right sides, a pair of pistons 23, each piston 23 is arranged in corresponding cylinder 21, and rack pinion 22 is arranged on work
Between plug 23, little gear 24 engages to rotate with the tooth of rack pinion 22, and is connected to the rotary shaft 25 of the little gear 24.
As shown in figure 3, scotch yoke mechanism 30 includes the cylinder 31 being arranged on the left and right sides for a pair, a pair of pistons 33, each piston 33
In corresponding cylinder 31, scotch 32 be arranged on it is between piston 33 and outstanding, yoke 34 be connected with scotch 32 so as to
Rotation, and rotary shaft 35 are connected with the yoke 34.
However, because pinion and rack 20 generally has a pair of cylinders 21,31 and a pair of work with scotch yoke mechanism 30
Plug 23,33, because the size of the device increases and space availability ratio variation, and correspondingly manufacturing cost is raised.In order to solve
These problems, are such as noted in Registered Korean Patent No. 10-0554689, Registered Korean Patent No. 10-0578538 and Korean Patent
Disclosed in volume 10-1424423, hydraulic rotating actuator has been devised, wherein single piston is arranged in single cylinder, rotation
Rotating shaft is installed with piston coaxial, and the rotary shaft corresponds to vertically moving for piston and rotated in forward and reverse, so as to subtract
The small size of device, improves space availability ratio, and significantly reduce manufacturing cost.
The rotary shaft of above-mentioned hydraulic rotating actuator is necessarily connected on the valve shaft 13 of butterfly valve 10.However, because valve and
Actuator is respectively as manufactured by valve manufacturing company and actuator manufacturing company, therefore there are the following problems, i.e. wherein actuator valve
The rotary shaft of axle and actuator has variously-shaped, size and tolerance according to manufacturing company, product type and size.Therefore, it is
Connection valve shaft and rotary shaft, the actuator manufacturing company face following inconvenience, that is, formed the rotary shaft of a variety of actuators so as to
The valve shaft of a variety of butterfly valves with being provided by valve manufacturing company is intermeshed.
The content of the invention
The present invention is designed as solving the above problems, and it is an object of the invention to provide for opening and closing butterfly valve
Hydraulic rotating actuator, wherein realizing new attachment structure using valve connector, the valve connector can be readily formed and right
It should be replaced in the varied shapes of the valve shaft of butterfly valve, and no matter the valve shaft shape of butterfly valve can be used with uniform shapes
Rotary shaft, so as to improve productivity ratio.
According to one aspect of the present invention, above and other purpose can be by providing the liquid for being used for opening and closing butterfly valve
Rotary actuator is pressed to realize, it includes：Cylinder, it is formed as the cylindrical shape with open-top and bottom；Piston, it has logical
The axis hole that the center portion thereof point is formed is crossed, the piston is inserted to hang down within the tube in the cylinder so as to supply and discharge according to hydraulic pressure
Directly move back and forth；Rotary shaft, it is inserted into the axis hole of piston, and the rotary shaft is configured to correspond to the vertically reciprocating movement of piston
And rotated on forward and reverse, and with the spline connection groove being longitudinally formed on its lower end；Upper lid, it is connected to described
The top of cylinder is simultaneously formed with cap bore, and the upper end of the rotary shaft is inserted and supported to rotate by upper lid；Lower cover, it connects
It is connected to the bottom of the cylinder and is formed with lower cap bore, the bottom of the rotary shaft is inserted and supported to rotate by lower cover；
And valve connector, it is inserted into the rotary shaft to be engaged with the spline connection groove spline in rotary shaft, the valve shaft of butterfly valve
Exposed end be assemblied in valve connector.
The cylinder can have a pair of reverse fastener holes, and the fastener hole is formed by its circumferential surface, and described for guiding
The guide finger of the vertically reciprocating movement of piston is fastened to the fixing hole.The piston can have a pair of reverse leadings seam, and the guide slit is led to
Cross the formation of its circumferential surface and Longitudinal extending, and guide finger insertion guide slit to allow piston vertical relative to the cylinder and
Move back and forth, and reversely rotate seam for a pair, reverse rotation seam is formed by its circumferential surface and diagonal extends, and is used
Reverse rotation seam is inserted into the rotating dog for guiding the rotary shaft in rotary moving.The rotary shaft can have through hole, the through hole
Formed by its circumferential surface, and rotating dog be inserted into through hole so that rotary shaft relative to piston with correspondence piston it is vertical
Move back and forth and rotated on forward and reverse.
The rotary shaft can have 90 ° of anglecs of rotation relative to the piston.
Upper lid can be formed with hydraulic port, and hydraulic pressure is supplied or be discharged on the piston in the cylinder by hydraulic pressure mouthful on this
Region or hydraulic pressure is supplied or discharged from the region, and the lower cover can be formed with lower hydraulic port, pass through the lower hydraulic port and supply
Give or be discharged into underpiston region of the hydraulic pressure into the cylinder or hydraulic pressure is supplied or discharged from the region.
Upper lid and lower cover can be connected to each other by multiple post bolts.
The rotary shaft can have the anglec of rotation instruction line set on its top surface, to indicate the anglec of rotation, and upper lid
There can be the anglec of rotation indicating graduation set on its top surface, the anglec of rotation indicating graduation corresponds to the reality of the rotary shaft
Anglec of rotation instruction line based on the anglec of rotation.
The valve connector can have spline, and the spline is formed along the external peripheral surface for longitudinally surrounding valve connector, so as to
It is inserted into rotary shaft and is engaged with the spline connection groove spline in rotary shaft, and the valve connecting hole being longitudinally formed through it,
And with the cross section with the cross section same shape of the exposed end of the valve shaft of butterfly valve so that the end of valve shaft may fitted to
In the valve connecting hole.
The end cross-sectional of valve shaft can have polygonal shape or " D " shape.
Valve connecting hole in the end of valve shaft and the valve connector, which can be mutually bonded, to be connect.
The valve shaft end of butterfly valve can have circular cross section.The valve connector may include cylindric valve connector, should
Cylindric valve connector have along longitudinally surround its external peripheral surface formation spline, so as to be inserted into rotary shaft and with rotation
Spline connection groove spline engagement in axle；And conical butt fixes chuck, the top that the conical butt fixes chuck is narrow
Bottom is wide, and the seam of its circumferential surface formation is longitudinally surrounded with multiple edges, and is configured to longitudinally be assembled to or from the valve connect
Extract out the bottom for connecing device.When fixed chuck is assembled in the bottom of valve connector, the diameter of fixed chuck can be reduced, and
And when fixed chuck is extracted out from the bottom of valve connector, the diameter increase of fixed chuck, and when the valve shaft end of butterfly valve
When portion is inserted into fixed chuck, the diameter of fixed chuck reduces to be assembled in the bottom of valve connector, so as to firmly protect
Hold the circumferential surface of valve shaft end.
The valve connector, which can have, slides pin insertion hole, slip pin insertion hole shape by the side surface of its bottom
Into the fixed chuck can have pin sliding groove, the position of slip pin insertion hole of the pin sliding groove in corresponding to valve connector
Put formed by its side surface and in the vertical compared to slide pin insertion hole it is longer extend, and the valve connector may be used also
Including sliding pin, the sliding pin is inserted into the pin sliding groove in fixed chuck by the slip pin insertion hole in valve connector.
The distance that the fixation chuck is assembled to or extracted out from valve connector can be determined by the longitudinal length of pin sliding groove.
The valve connector may also include spring, and the spring is arranged in valve connector and is configured to extracting fixed chuck out
Direction on apply elastic force.
Brief description of the drawings
Other objects, features and other advantages of the present invention will be by the following detailed description and more clear with reference to accompanying drawing
Understand to Chu, wherein：
Fig. 1 is the perspective view for showing general butterfly valve；
Fig. 2 is the partially cutaway view for showing conventional rack-gear type hydraulic rotating actuator；
Fig. 3 is the partially cutaway view for showing conventional dog link formula hydraulic rotating actuator；
Fig. 4 is to show the hydraulic rotating actuator for being used to open and close butterfly valve according to the embodiment of the present invention
Perspective view；
Fig. 5 is the partially cutaway view for the major part for showing the embodiment shown in Fig. 4；
Fig. 6 is the decomposition diagram of the embodiment shown in Fig. 5；
Fig. 7 and 8 is to show that the rotary shaft vertically moved corresponding to the piston of the embodiment shown in Fig. 4 is in rotary moving
Main portion perspective view；
Fig. 9 is to show the valve connector for being used to open and close the hydraulic rotating actuator of butterfly valve according to the present invention
First embodiment main portion perspective view；
Figure 10 is to show the valve connection for being used to open and close the hydraulic rotating actuator of butterfly valve according to the present invention
The main portion perspective view of the second embodiment of part；
Figure 11 is to show the valve connection for being used to open and close the hydraulic rotating actuator of butterfly valve according to the present invention
The main portion perspective view of 3rd embodiment of part；
Figure 12 is the sectional view for the assembled state for showing the embodiment shown in Figure 11；And
Figure 13 and 14 is the sectional view for the valve connector operation for showing the embodiment shown in Figure 12.
Embodiment
Hereinafter, with reference to the accompanying drawings to the hydraulic rotating actuator for being used to open and close butterfly valve according to the present invention
Preferred embodiment be described in detail.
As shown in Fig. 4 to Figure 14, included according to the hydraulic rotating actuator for being used to open and close butterfly valve of the present invention
Cylinder 100, piston 200, rotary shaft 300, upper lid 400, lower cover 500 and valve connector 600, and post bolt can be further comprised
700.The hydraulic rotating actuator may also include guide finger 110 and rotating dog 230, pass through the guide finger 110 and the institute of rotating dog 230
State the vertically moving and rotating corresponding to piston 200 of rotary shaft 300.
As shown in Figures 4 to 6, cylinder 100 is embodied as hydraulic cylinder, and it is formed as the cylindrical shape with open-top and bottom
Shape, and it is used for mobile piston 200 installed therein vertically reciprocatingly using hydraulic pressure.In other words, cylinder 100 is formed as having and opened wide
The drum of top and bottom to accommodate piston 200 and rotary shaft 300 wherein.Cylinder 100 has a pair of reverse fastener holes
120, the reverse fastener hole 120 is formed by its circumferential surface, the guide finger for guiding the vertically reciprocating movement of the piston 200
110 are fastened to reverse fastener hole 120.The unlimited top and bottom of cylinder 100 are by upper lid 400, lower cover 500 and the envelope of rotary shaft 300
Close, it will be described later.
Internal thread and outer spiral shell are respectively formed with by fastener hole 120 and guide finger 110 of the circumferential surface formation of cylinder 100
Line so that guide finger 110 is engaged with fastener hole 120.Filling device (not shown) be arranged in fastener hole 120 with prevent supply or
It is drained into the cylinder or from cylinder supply or the hydraulic pressure discharged between the composition surface of guide finger 110 and fastener hole 120
Leakage.
As shown in Fig. 5 to Fig. 8, piston 200 has axis hole 210, is formed by the center portion thereof point and is inserted into cylinder 100
In.According to the supply and discharge of hydraulic pressure, the vertically reciprocating movement in cylinder 100 of piston 200.In other words, piston 200 by supply or
The hydraulic vertical for being drained into the cylinder or supplying or discharging from the cylinder is moved back and forth, and inserted with the axle of rotary shaft 300
Hole 210 is formed by piston 200.
As shown in Fig. 4 to Fig. 8, rotary shaft 300 is inserted into the axis hole 210 of piston 200, and is configured to correspondence piston
200 vertically reciprocating movement is rotated up in the side of rotating and reverse.Rotary shaft 300 has spline connection groove 310, the spline connection
Groove 310 is formed along the inner circumferential surface for longitudinally surrounding the bottom of rotary shaft 300.The function of spline connection groove 310 be by with valve
The revolving force of rotary shaft 300 is delivered to valve shaft 13 by the connection of connector 600, and this will be described later.As shown in Figure 7 and Figure 8,
The vertically reciprocating movement that rotary shaft 300 corresponds to piston 200 is rotated up in the side of rotating and reverse.Realize this point, cylinder
100th, piston 200 and rotary shaft 300 are formed with fastener hole 120, guide slit 220, rotation seam 240 and through hole 320, these and guiding
Pin 110 and rotating dog 230 are connected.
More specifically, piston 200 has a pair of reverse leadings seam 220,220 circles by piston 200 are stitched in the reverse leading
Perimeter surface formation and extend longitudinally, and guide finger 110 insert the reverse leading seam 220 so as to allow piston 200 relative to
The cylinder 100 is moved vertically and reciprocally.Piston 200, which also has a pair, reversely rotates seam 240, and reverse rotation seam 240 leads to
The circumferential surface formation and diagonal for crossing piston 200 extend, and for guiding the rotary shaft 300 rotating dog in rotary moving
230 insert reverse rotation seam 240.
That is, piston 200 is formed as hollow drum, and it, which is open and had by axis hole 210 in top and bottom, draws
Seam guide 220 and rotation seam 240, the guide slit 220 and rotation seam 240 are formed by the circumferential surface of piston 200.The piston 200
The external diameter having about 0.1mm or smaller smaller than the internal diameter of cylinder 100, so as to due to supply or be drained into the cylinder 100 or from
Hydraulic pressure that the cylinder 100 is supplied or discharged and ensure smoothly vertically reciprocating movement.Piston 200 can not pass through vertically extending guiding
Seam 220 is rotated, and the guide finger 110 for being fastened to the fastener hole 120 of cylinder 100 is slided along guide slit 220, and is hung down in cylinder 100
It is straight and move back and forth.Now, due to the rotating dog in the diagonal through hole 320 for extending and inserting rotary shaft 300 of rotation seam 240
230 slide along rotation seam 240, as shown in fig. 7, when the vertical ascent in cylinder 100 of piston 200, rotating dog 230 is moved to rotation
Turn the bottom of seam 240, therefore rotary shaft 300 rotates on positive (or clockwise direction).On the contrary, as shown in figure 8, working as piston
200 is vertical when declining in cylinder 100, and rotating dog 230 is moved to the top of rotation seam 240, therefore rotary shaft 300 is reverse
Rotated in (or counter clockwise direction).In order to allow rotary shaft 300 relative to the vertically reciprocating shifting of piston 200 and correspondence piston 200
Move and rotated on forward and reverse, rotary shaft 300 has through hole 320, the circumferential surface shape that the through hole 320 passes through rotary shaft 300
Into, and rotating dog 230 is inserted into the through hole 320.
The rotation seam 240 of piston 200 is formed as with diagonal or spiral-shaped with predetermined length and at 20 ° to 60 °
In the range of inclination angle, and be formed as when insertion rotary shaft 300 rotating dog 230 from rotation seam 240 bottom be moved to
During the top of rotation seam 240, the anglec of rotation of rotary shaft 300 is set to 90 °, vice versa.In other words, rotary shaft 300 has
There are 90 ° of anglecs of rotation relative to piston 200, and may be used on the butterfly valve 10 or other types of valve shown in Fig. 1, for example
Ball valve, although not shown in the accompanying drawings, the valve shaft of the ball valve is configured to be rotated by 90 ° to open and close the valve.
More specifically, the anglec of rotation of rotary shaft 300 is set as hanging down for 90 °, and stroke, i.e. piston 200 by rotation seam 240
The output torque of straight moving range and the rotary shaft 300 be connected with valve shaft 13 is stitched 240 bottom and the top by rotation
Between inclination angle determine.Because the inclination angle of rotation seam 240 is small, the stroke of piston 200 shortens, and rotary shaft 300 is defeated
Go out moment of torsion reduction.Term " stroke " refers to the one-way distance of vertically reciprocating movement of the piston 200 in cylinder 100.Piston 200
Stroke is longer, and the output torque of rotary shaft 300 is increased more.Therefore, according to the present invention for opening and closing butterfly valve
The hydraulic rotating actuator may be fabricated such that the rotation seam 240 required output torque of the inclination angle based on cylinder 100 and
Size is changeably determined.
Piston 200 is provided with O-ring, and the O-ring is made up of silicon or elastomeric material, and around piston 200 circumferential surface with
With the interface of cylinder 100 at formed seal so that due to supplying or being drained into the cylinder 100 or being supplied from the cylinder 100
Or discharge hydraulic pressure and be conducive to the vertically reciprocating movement of the piston 200.
As shown in Figures 4 to 6, upper lid 400 is connected to the top of the cylinder 100 and is formed with cap bore 410, the rotary shaft
300 upper end is inserted into cap bore 410 and supports to rotate.Lower cover 500 is connected to the bottom of cylinder 100 and is formed with lower cover
Hole 510, the bottom of the rotary shaft 300 is inserted into lower cap bore 510 and supports to rotate.Rotary shaft 300 is settable thrust
Bearing is to reduce the frictional resistance of the upper cap bore 410 of upper lid 400 and the lower cap bore 510 of lower cover 500.
As shown in figure 5, upper lid 400 is formed with hydraulic port 420, hydraulic pressure is supplied or is discharged into institute by upper hydraulic port 420
State in the region on the piston 200 of cylinder 100 or hydraulic pressure is supplied or discharged from the region.Lower cover 500 is formed with lower hydraulic port
520, by lower hydraulic port 520 hydraulic pressure is supplied or is discharged into the region of the lower section of piston 200 of the cylinder 100 or from the region
Supply or discharge hydraulic pressure.Therefore, as shown in figure 8, when upper hydraulic port 420 of the hydraulic pressure supply to upper lid 400, piston 200 is downward
It is mobile.As shown in fig. 7, when lower hydraulic port 520 of the hydraulic pressure supply to lower cover 500, piston 200 is moved up.Upper lid 400 is with
Lid 500 can be securely coupled with each other by multiple post bolts 700.
Rotary shaft 300 can have the anglec of rotation instruction line 330 set on its top surface, to indicate the rotation of rotary shaft 300
Gyration, and upper lid 400 can have the anglec of rotation indicating graduation 430 set on its top surface, the anglec of rotation indicating graduation
430 anglec of rotation instruction lines 330 corresponded to based on the actual anglec of rotation of the rotary shaft 300.Referred to using the anglec of rotation
Timberline 330 and anglec of rotation indicating graduation 430, workman can easily check that the direction of the rotary shaft 300 and butterfly valve 10 are
It is no to open or close.
Held in the hydraulic rotating for being used to open and close butterfly valve and there is the said structure with reference to Fig. 5 according to the present invention
In row device, under conditions of rotary shaft 300 rotates along positive (or clockwise direction), as shown in fig. 7, being the pass with butterfly valve 10
Close it is associated, if butterfly valve 10 needs to close, in the lower hydraulic port 520 of hydraulic pressure supply to lower cover 500, so that hydraulic pressure is from Shang Gai
400 upper hydraulic port 420 is discharged.Therefore, piston 200 rise in cylinder 100 without by guide finger 110 and guide slit 220 come
Rotation, the rotating dog 230 of insertion rotary shaft 300 slides to the bottom of rotation seam 240, and rotary shaft 300 and and rotary shaft
The valve shaft 13 of the butterfly valves 10 of 300 connections is along rotating forward.The result is that butterfly valve 10 is closed.
Conversely, in rotary shaft 300 along under conditions of reversely rotating (or counter clockwise direction), as shown in figure 8, being and butterfly valve
10 opening is associated, if butterfly valve 10 needs to open, the upper hydraulic port 420 of hydraulic pressure supply to upper lid 400 so that hydraulic pressure from
The lower hydraulic port 520 of lower cover 500 is discharged.Therefore, piston 200 declines in cylinder 100 without by guide finger 110 and guide slit
220 rotate, and the rotating dog 230 that is inserted into rotary shaft 300 slides into the top of rotation seam 240, and rotary shaft 300 and
The valve shaft 13 for the butterfly valve 10 being connected with rotary shaft 300 is along reverse rotation.The result is that butterfly valve 10 is opened.
As shown in Fig. 4, Fig. 6, Fig. 9 to 14, valve connector 600 be inserted into rotary shaft 300 with the flower in rotary shaft 300
It is bonded the engagement of the spline of access slot 310.The exposed end of the valve shaft 13 of butterfly valve 10 is assembled in the valve connector 600.Therefore, it is right
Should in cylinder 100 rotary shaft 300 of the vertically reciprocating mobile rotation of piston 200 revolving force, be sent to by valve connector 600
The valve shaft 13 of butterfly valve 10, so as to open and close butterfly valve 10.
In detail, as shown in Figure 9 and Figure 10, valve connector 600 has spline S, and spline S edges longitudinally surround valve connector
600 external peripheral surface is formed, to be inserted into rotary shaft 300 and to be connect with the spline of spline connection groove 310 in rotary shaft 300
Close.Valve connector 600 also has valve connecting hole 610, and the valve connecting hole 610 is by valve connector 600 along being longitudinally formed.Valve is connected
Hole 610 has the cross section with the cross section same shape of the exposed end of the valve shaft 13 of butterfly valve 10, so that the valve shaft 13
End may fitted in valve connecting hole 610.By way of example, it is shown in Fig. 9, and the end of the valve shaft 13 has horizontal stroke
Section, the cross section has square shape, but the end cross-sectional of valve shaft 13 can have other polygonal shapes, such as five sides
The shape of shape or hexagon can have " D " shape.Selectively, as shown in Figure 10, the end of valve shaft 13 and the valve connector
Valve connecting hole 610 in 600 can be bonded each other to be connect.
Therefore, even if the end of the valve shaft 13 of butterfly valve 10 has various shapes, end and the energy of rotary shaft 300 of valve shaft 13
Enough spline connection grooves 310 for only having same shape and size by being formed in the bottom of rotary shaft 300 are simultaneously connected in valve
The valve connecting hole 610 corresponding to the end of the valve shaft 13 is formed in part 600 easily to connect.
On the other hand, in the case of there is circular cross section in the end of the valve shaft 13 of butterfly valve 10, the valve connecting hole
610 also have circular cross section, and this may result in following problem：The revolving force of rotary shaft 300 can not pass through valve connector 600
It is delivered to the valve shaft 13 of butterfly valve 10.In the case, connect without the end of the valve shaft 13 that handles above-mentioned shape again and valve
Hole 610 is connect, as shown in Figure 11 to 14, valve connector 600 can be configured to including valve connector 620 and fixed chuck 630, and
Sliding pin 640 and spring 650 can be further comprised.
In detail, as shown in figure 11, the valve connector 620 of valve connector 600 is formed as cylindric, and with being enclosed along longitudinal direction
Around the valve connector 600 external peripheral surface formation spline S, so as to insert in the rotary shaft 300 and with rotary shaft 300
In the spline of spline connection groove 310 engagement.The fixation chuck 630 of valve connector 600 is formed as frusto-conical, and its top is narrow
Bottom is wide and the slit 631 of the external peripheral surface formation of the fixed chuck 630 is longitudinally surrounded with multiple edges.Fixed chuck
630 are configured to be assembled to the bottom of valve connector 620 along longitudinal direction or are extracted out from the bottom of valve connector 620.Work as fixing card
When disk 630 is assembled in the bottom of valve connector 620, the diameter of fixed chuck 630 reduces.When fixed chuck 630 connects from valve
When the bottom for connecing device 620 is extracted out, the diameter increase of fixed chuck 630.As shown in Figure 12 to Figure 14, the valve shaft 13 of butterfly valve 10
End be inserted into fixed chuck 630, and the fixation chuck shunk by being assembled in the bottom of valve connector 620
630 firmly hold the external peripheral surface of the end of valve shaft 13.
In more detail, fixed chuck 630 has frusto-conical, and wherein upper diameter is less than lower diameter, and narrow
Seam 631 is formed along the circumferential surface for longitudinally surrounding fixed chuck 630.Therefore, if external force is applied to fixation in radial directions
On chuck 630, the diameter of fixed chuck 630 reduces due to slit 631, and if when external force is removed, fixes chuck 630
Diameter increases, and therefore fixed chuck 630 returns to its original-shape.Therefore, as shown in Figure 13 and Figure 14, in fixed chuck
In the case that 630 can be assembled to the bottom of valve connector 620 along longitudinal direction or be extracted out from the bottom of valve connector 620, when
When fixed chuck 630 is assembled in the bottom of valve connector 620, the diameter of fixed chuck 630 by radial directions to
The power of interior application reduces, and when fixed chuck 630 is extracted out from the bottom of valve connector 620, inwardly applies in the radial direction
Plus power be removed, the diameter increase of fixed chuck 630, and therefore fix chuck 630 and returning to its original-shape.
That is, as shown in Figure 12 to Figure 14, because the end of the valve shaft 13 of butterfly valve 10 is inserted into fixed chuck 630, Gu
Determine chuck 630 to move up in the bottom of valve connector 620.Meanwhile, the diameter of fixed chuck 630 is connected by being assembled to valve
Connect in the bottom of device 620 and reduce, so as to firmly hold the circle of the end for the valve shaft 13 being inserted into fixed chuck 630
Perimeter surface.
It is assembled to or extraction, the shape of valve connector 620 from the bottom of valve connector 620 to allow to fix chuck 630
Pin insertion hole 621 is slided into having, fixed chuck 630 is formed with pin sliding groove 632, and is separately provided with sliding pin 640.In detail
Ground, as shown in Figure 11 to 14, slides pin insertion hole 621 and is formed by the side surface of the bottom of valve connector 620, and institute
Pin sliding groove 632 is stated by the side surface of fixed chuck 630 in the position of the slip pin insertion hole 621 corresponding to valve connector 620
Put formation, and along longitudinal direction compared to slide pin insertion hole 621 it is longer extend.The cunning that sliding pin 640 passes through valve connector 620
Dynamic pin insertion hole 621 is inserted into the pin sliding groove 632 of fixed chuck 630, and the longitudinal length of the pin sliding groove 632 is used for
Determine that the fixation chuck 630 is assembled to valve connector 620 or the distance extracted out from valve connector 620.
Because valve connector 620 and fixed chuck 630 are connected to each other by sliding pin 640, and in fixed chuck 630
Pin sliding groove 632 along longitudinal direction it is longer compared to slip pin insertion hole 621 in valve connector 620 extend, fixed chuck 630 can
Relative to the vertical sliding motion of valve connector 620.Fixed chuck 630 refers to relative to the vertical sliding of valve connector 620
The movement that fixed chuck 630 is assembled to or extracted out from the bottom of valve connector 620.
As described above, when the end of valve shaft 13 is inserted into fixed chuck 630, the diameter of fixed chuck 630 passes through valve
Connector 620 and reduce, so as to firmly hold the end circumferential surface of valve shaft 13.If on the contrary, valve connector 620 is upward
Lifting, the end for the valve shaft 13 being inserted into fixed chuck 630 is separated and discharged from fixed chuck 630.Now, if fixing card
The diameter of disk 630 is maintained at the state of reduction, i.e. if fixed chuck 630 is maintained at the bottom for being assembled to valve connector 620
In state, then when they need place under repair or change when may be difficult dismantle the valve connector 620 and fixation chuck 630.
In order to assist the fixation chuck 630 being assembled in valve connector 620 to be retracted to its home position, such as Figure 11 to Figure 14
Shown, valve connector 600 may also include the spring 650 being arranged in valve connector 620, and be configured to that chuck 630 will be being fixed
Apply elastic force on the direction of extraction.Therefore, fixed chuck 630 is maintained at from valve connector 620 by the elastic force of spring 650
The state of extraction, and when valve shaft 13 is inserted into fixed chuck 630, the elastic force of the fixed resistance of chuck 630 spring 650 and
In the bottom for being assembled to valve connector 620, so as to firmly hold valve shaft 13.If valve shaft 13 is removed from fixed chuck 630,
The weight or because the elastic force of slit 631 of fixed chuck 630 can be added by the elastic force of spring 650 by then fixing chuck 630
And it is maintained at the state extracted out from valve connector 620.
As described above, being formed as that there is circle according to the hydraulic rotating actuator for being used to open and close butterfly valve of the present invention
Barrel shape, its middle cylinder 100 and piston 200 are axially mounted on by upper lid 400 and lower cover 500 and rotary shaft 300.Therefore, compare
In including the conventional actuator of rack and pinion mechanism or scotch yoke mechanism, had according to the hydraulic rotating actuator of the present invention
Advantage is that the size of the device reduces, and space availability ratio enhancing, the assembly and disassembly process for installing and repairing becomes to hold
Easily, and install or maintenance operating efficiency it is significant improve because without all during be connected with the valve shaft 13 of butterfly valve 10
The interference in bustle pipe road or equipment.
In addition, taking the new connection of the valve connector 600 using spline formation according to the hydraulic rotating actuator of the present invention
Structure, its various shapes for corresponding to the valve shaft 13 of butterfly valve 10 can be readily formed and replace.Accordingly, due to having used tool
There is the rotary shaft 300 of uniform shapes, regardless of the shape of the valve shaft 13 of butterfly valve 10, productivity ratio will all be improved.
Even if in addition, when the end of the valve shaft 13 of butterfly valve 10 has circular cross section, because the valve connector 600 comes from
The revolving force of rotary shaft 300 can be entirely delivered to valve shaft 13, and valve connector 600 is configured to include valve connector 620 and fixing card
Disk 630.In addition, the valve connector 620 and fixed chuck 630 are configured to easily connection and separated.The result is that reliability and resistance to
Long property is improved.
While there has been shown and described that several embodiments of the invention, but it will be appreciated by those skilled in the art that
It is that principle and objective that these embodiments can be changed without departing from the present invention, the scope of the present invention are limited to right
It is required that and in their equivalent.
Claims (12)
1. a kind of hydraulic rotating actuator for being used to open and close butterfly valve, it is characterised in that including：
Cylinder, it is formed as the drum with open-top and bottom；
Piston, it has the axis hole formed by the center portion thereof point, and the piston is inserted into the cylinder so as to the confession according to hydraulic pressure
Give and discharge and the vertically reciprocating movement in the cylinder；
Rotary shaft, it is inserted into the axis hole of piston, is configured to the vertically reciprocating movement of correspondence piston and is revolved on forward and reverse
Turn, and the rotary shaft has the spline connection groove being longitudinally formed on its lower end；
Upper lid, it is connected to the top of the cylinder and is formed with cap bore, and the upper end of the rotary shaft is inserted by cap bore on this
Enter and support to rotate；
Lower cover, it is connected to the bottom of the cylinder and is formed with lower cap bore, and the bottom of the rotary shaft is inserted by the lower cap bore
Enter and support to rotate；And
Valve connector, it is inserted into the rotary shaft to be engaged with the spline connection groove spline in rotary shaft, the valve shaft of butterfly valve
Exposed end be assemblied in the valve connector.
2. the hydraulic rotating actuator according to claim 1 for being used to open and close butterfly valve, it is characterised in that
The cylinder has a pair of reverse fastener holes, and the reverse fastener hole is formed by the circumferential surface of cylinder, and for guiding institute
The guide finger for stating the vertically reciprocating movement of piston is fastened to the reverse fastener hole,
The piston is stitched with a pair of reverse leadings, circumferential surface formation and Longitudinal extending of the reverse leading seam by piston,
And the guide finger is inserted into reverse leading seam to allow piston vertical relative to the cylinder and move back and forth, Yi Jiyi
To reversely rotating seam, circumferential surface formation and diagonal of the reverse rotation seam by piston extend, and make the guiding rotation
Rotating shaft rotating dog in rotary moving is inserted into reverse rotation seam, and
The rotary shaft has through hole, and the through hole is formed by the circumferential surface of rotary shaft, and the rotating dog be inserted into it is logical
Hole rotates to allow rotary shaft relative to the vertically reciprocating movement that piston corresponds to piston on forward and reverse.
3. the hydraulic rotating actuator according to claim 2 for being used to open and close butterfly valve, it is characterised in that described
Rotary shaft has 90 ° of anglecs of rotation relative to the piston.
4. the hydraulic rotating actuator according to claim 1 for being used to open and close butterfly valve, it is characterised in that described
Upper lid is formed with hydraulic port, supplied by hydraulic pressure mouthful on this or be discharged into the region on hydraulic pressure to the piston in the cylinder or
Person supplies or discharged hydraulic pressure from the region, and
The lower cover is formed with lower hydraulic port, and hydraulic pressure is supplied or be discharged into below the piston in the cylinder by the lower hydraulic port
Hydraulic pressure is supplied or discharged in region or from the region.
5. the hydraulic rotating actuator according to claim 1 for being used to open and close butterfly valve, it is characterised in that described
Upper lid and lower cover are connected to each other by multiple post bolts.
6. the hydraulic rotating actuator according to claim 1 for being used to open and close butterfly valve, it is characterised in that described
Rotary shaft has the anglec of rotation instruction line set on its top surface, to indicate the anglec of rotation, and
The upper lid is with the anglec of rotation indicating graduation set on its top surface, and the anglec of rotation indicating graduation corresponds to described
Anglec of rotation instruction line based on the actual anglec of rotation of rotary shaft.
7. the hydraulic rotating actuator according to claim 1 for being used to open and close butterfly valve, it is characterised in that described
Valve connector has spline, and the spline is formed along the external peripheral surface for longitudinally surrounding valve connector, to be inserted into rotary shaft
And engaged with the spline connection groove spline in rotary shaft, and the valve connecting hole being longitudinally formed through valve connector, and with
The cross section of the cross section same shape of the exposed end of the valve shaft of butterfly valve so that the end of valve shaft is assembled to the valve connection
Kong Zhong.
8. the hydraulic rotating actuator according to claim 7 for being used to open and close butterfly valve, it is characterised in that valve shaft
End cross-sectional there is polygonal shape or " D " shape.
9. the hydraulic rotating actuator according to claim 7 for being used to open and close butterfly valve, it is characterised in that valve shaft
End and the valve connector in valve connecting hole be bonded connect each other.
10. the hydraulic rotating actuator according to claim 1 for being used to open and close butterfly valve, it is characterised in that butterfly
The valve shaft end of shape valve has circular cross section,
The valve connector includes：
Cylindric valve connector, it has along the spline for longitudinally surrounding the formation of its external peripheral surface, to be inserted into rotary shaft
And engaged with the spline connection groove spline in rotary shaft；And
Conical butt fixes chuck, and its narrow bottom in top is wide, and the seam of its circumferential surface formation is longitudinally surrounded with multiple edges, and
And be configured to longitudinally be assembled to or extract out from the bottom of the valve connector,
And wherein, when fixed chuck is assembled in the bottom of valve connector, the diameter of fixed chuck reduces, and when solid
Chuck is determined from during the bottom extraction of valve connector, and the diameter of fixed chuck increases, and
When the valve shaft end of butterfly valve is inserted into fixed chuck, the diameter of fixed chuck is by being assembled under valve connector
Reduce in end, so as to firmly keep the external peripheral surface of valve shaft end.
11. the hydraulic rotating actuator according to claim 10 for being used to open and close butterfly valve, it is characterised in that institute
Stating valve connector has slip pin insertion hole, and the slip pin insertion hole is formed by the side surface of its bottom,
The fixed chuck has pin sliding groove, the position of slip pin insertion hole of the pin sliding groove in corresponding to valve connector
Formed by its side surface and along longitudinal direction compared to slide pin insertion hole it is longer extend, and
The valve connector also includes sliding pin, and the sliding pin is inserted into fixing card by the slip pin insertion hole in valve connector
In the pin sliding groove of disk,
And the distance that wherein, the fixation chuck is assembled to or extracted out from valve connector can be by the longitudinal length of pin sliding groove be Lai really
It is fixed.
12. the hydraulic rotating actuator according to claim 11 for being used to open and close butterfly valve, it is characterised in that institute
Stating valve connector also includes spring, and the spring is arranged in valve connector and is configured to apply on the direction for extracting fixed chuck out
Elastic force.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1020150103508A KR101558540B1 (en) | 2015-07-22 | 2015-07-22 | Hydraulic rotary actuator for opening and closing butterfly valve |
| KR10-2015-0103508 | 2015-07-22 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106369213A CN106369213A (en) | 2017-02-01 |
| CN106369213B true CN106369213B (en) | 2017-07-18 |
Family
ID=54357778
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510599759.0A Expired - Fee Related CN106369213B (en) | 2015-07-22 | 2015-09-18 | Hydraulic rotating actuator for opening and closing butterfly valve |
Country Status (4)
| Country | Link |
|---|---|
| JP (1) | JP5934830B1 (en) |
| KR (1) | KR101558540B1 (en) |
| CN (1) | CN106369213B (en) |
| SG (1) | SG10201506806WA (en) |
Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101719160B1 (en) * | 2015-11-12 | 2017-04-04 | 주식회사 코밸 | Valve actuator |
| KR101887395B1 (en) * | 2016-11-14 | 2018-08-10 | 주식회사 에너콘 | Rotary actuator with valve clearance adjusting device for quarter-turn valve |
| JP6232516B1 (en) * | 2017-07-04 | 2017-11-15 | 株式会社飯塚鉄工所 | Valve drive device and diaphragm valve |
| CN107676526B (en) * | 2017-11-16 | 2024-02-09 | 成都华科阀门制造有限公司 | Variable torque electrohydraulic actuator of butterfly valve based on hard interlocking and control method |
| KR200487794Y1 (en) * | 2017-12-05 | 2018-11-06 | 주식회사 하이텍 | Manual fire extinguisher actuator |
| KR101867954B1 (en) * | 2018-02-21 | 2018-06-20 | 주식회사 정아유압 | Rotary actuator |
| US10436345B1 (en) | 2018-05-22 | 2019-10-08 | Woodward, Inc. | Simplified mechanism for a scotch yoke actuator |
| CN110230725B (en) * | 2019-07-12 | 2024-06-18 | 无锡爱圣拓克流体控制有限公司 | Adjusting tool for angle of driving shaft of pneumatic actuator |
| CN114483602B (en) * | 2021-12-28 | 2023-12-12 | 中国航空工业集团公司金城南京机电液压工程研究中心 | Braking structure of fuel pump rotary plate valve |
| CN114413003B (en) * | 2022-03-14 | 2023-06-23 | 国工控股集团有限公司 | Bidirectional multi-bias metal sealing butterfly valve |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS51137126A (en) * | 1975-05-21 | 1976-11-26 | Kenichi Yoshimura | Gas stop valve |
| JPS57139772U (en) * | 1981-02-25 | 1982-09-01 | ||
| JP2004060682A (en) * | 2002-07-25 | 2004-02-26 | Kitz Corp | Connection structure for valve actuator |
| KR20040079076A (en) * | 2003-03-06 | 2004-09-14 | 이승백 | De-clutching system of valve actuator |
| CN104534153A (en) * | 2014-12-19 | 2015-04-22 | 西安泵阀总厂有限公司 | Hydraulic control valve opening and closing device for butterfly valve or ball valve |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5519285Y2 (en) * | 1974-11-28 | 1980-05-08 | ||
| US4261546A (en) * | 1980-06-25 | 1981-04-14 | Posi-Seal International, Inc. | Quarter-turn valve actuator |
| JPS57190105A (en) * | 1981-05-15 | 1982-11-22 | Ckd Corp | Rotation driving apparatus |
| JPH0523920Y2 (en) * | 1985-08-16 | 1993-06-17 | ||
| NO300239B1 (en) * | 1994-12-05 | 1997-04-28 | Scana Skarpenord As | Hydraulic rotary motor |
| JP2007162777A (en) * | 2005-12-12 | 2007-06-28 | Kitz Corp | Rotary actuator |
-
2015
- 2015-07-22 KR KR1020150103508A patent/KR101558540B1/en active IP Right Grant
- 2015-08-28 SG SG10201506806WA patent/SG10201506806WA/en unknown
- 2015-09-10 JP JP2015178097A patent/JP5934830B1/en not_active Expired - Fee Related
- 2015-09-18 CN CN201510599759.0A patent/CN106369213B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS51137126A (en) * | 1975-05-21 | 1976-11-26 | Kenichi Yoshimura | Gas stop valve |
| JPS57139772U (en) * | 1981-02-25 | 1982-09-01 | ||
| JP2004060682A (en) * | 2002-07-25 | 2004-02-26 | Kitz Corp | Connection structure for valve actuator |
| KR20040079076A (en) * | 2003-03-06 | 2004-09-14 | 이승백 | De-clutching system of valve actuator |
| CN104534153A (en) * | 2014-12-19 | 2015-04-22 | 西安泵阀总厂有限公司 | Hydraulic control valve opening and closing device for butterfly valve or ball valve |
Also Published As
| Publication number | Publication date |
|---|---|
| JP5934830B1 (en) | 2016-06-15 |
| KR101558540B1 (en) | 2015-10-14 |
| JP2017026136A (en) | 2017-02-02 |
| CN106369213A (en) | 2017-02-01 |
| SG10201506806WA (en) | 2016-07-28 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106369213B (en) | Hydraulic rotating actuator for opening and closing butterfly valve | |
| CN203022493U (en) | Modified damping structure | |
| CN105041758B (en) | Integrated hydraulic cylinder with functions of rotating and telescoping | |
| KR101424423B1 (en) | Hydraulic rotary actuator for valve | |
| CN207393118U (en) | A kind of pushing device for rotary steerable tool | |
| CN103821467A (en) | Hydraulic power chuck for automatic drilling machine | |
| CN207131660U (en) | A kind of Telescopic rotary combined type hydraulic cylinder | |
| CN205744404U (en) | A kind of syringe pump modular structure | |
| CN105402101B (en) | A kind of dual output axial plunger pump | |
| CN207621381U (en) | A kind of hydraulic drive two way seal axial-flow type shut-off valve | |
| CN103511710A (en) | Actuator for straight stroke type valve with threaded rod | |
| CN203702033U (en) | Hydraulic power chuck for automatic drilling machine | |
| CN207111989U (en) | Beneficial to quick-adjustsing electric proportional control valve | |
| US9797489B2 (en) | Actuator thrust rod and method of assembly | |
| CN109397112A (en) | A kind of extruding abrasive flows machining medium list Two-way Cycle feedway and its working method | |
| CN108662160A (en) | A kind of efficiently easily more bore water valves | |
| CN102536950A (en) | Hydraulic speed-up cylinder | |
| CN103382928A (en) | Hydraulic manual pump | |
| CN208934597U (en) | A kind of fluid power grouting circulator | |
| CN207830266U (en) | A kind of electricity servo high precision oil cylinder | |
| CN106812953B (en) | Stop valve | |
| CN105697851A (en) | Screw drive hydraulic actuator for valve drive | |
| CN204459256U (en) | A kind of ball type stop valve | |
| CN202612251U (en) | Hydraulic speed-increasing cylinder | |
| CN205592471U (en) | Be used for valve driven worm drive executor that surges |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170718 Termination date: 20180918 |