CN203162310U - Yoke-type driving device of rotation stopping bar - Google Patents
Yoke-type driving device of rotation stopping bar Download PDFInfo
- Publication number
- CN203162310U CN203162310U CN 201320177483 CN201320177483U CN203162310U CN 203162310 U CN203162310 U CN 203162310U CN 201320177483 CN201320177483 CN 201320177483 CN 201320177483 U CN201320177483 U CN 201320177483U CN 203162310 U CN203162310 U CN 203162310U
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- dog link
- rod
- valve
- drive unit
- driver
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- 230000005540 biological transmission Effects 0.000 claims abstract description 42
- 239000012530 fluid Substances 0.000 claims abstract description 7
- 238000004080 punching Methods 0.000 claims description 6
- 230000003014 reinforcing effect Effects 0.000 claims description 5
- 230000033001 locomotion Effects 0.000 description 8
- 230000015572 biosynthetic process Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 238000005452 bending Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- TVEXGJYMHHTVKP-UHFFFAOYSA-N 6-oxabicyclo[3.2.1]oct-3-en-7-one Chemical compound C1C2C(=O)OC1C=CC2 TVEXGJYMHHTVKP-UHFFFAOYSA-N 0.000 description 1
- 230000005465 channeling Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
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Abstract
The utility model provides a yoke-type driving device of a rotation stopping bar. The yoke-type driving device rotates to drive a rod of a valve arranged at a pipeline and the like to open and close the valve. The yoke-type driving device comprises a shell, a rotation stopping bar yoke, a transmission block, a guide bar, a bar and drivers. The shell is used for storing main parts of the driving device. The rotation stopping bar yoke with the end portion fixed on the valve rod swings by taking the valve rod as a center and is used for opening and closing the valve. The transmission block is supported in a sliding mode in order to enable the rotation stopping bar yoke to swing, and is provided with a pushing and pressing portion which is abutted against and correspondingly arranged at a position near to the other end portion of the rotation stopping bar yoke. Two end portions of the guide bar are fixed on the shell, and the guide bar is used for supporting the transmission block in a sliding mode. The bar is fixed on the transmission block and is used for allowing the transmission block to move along the guide bar in a sliding mode. The drivers are arranged on side walls on at least one side of the shell. Each driver is composed of a piston, a stamping-type bar and the like which are arranged inside a cylinder fixed with the end portion of the bar and driven by fluid pressure.
Description
Technical field
The utility model relates to the drive unit that a kind of conduct be used for to drive the valve of being located at pipeline etc., can make the dog link formula drive unit of output torque and in the past drive unit phase specific output torque raising.
Background technique
As mode in the past, dog link formula drive unit is incorporated in as shown in Figure 8 the housing 9, is equipped with dog link 2 in the end of the valve rod 1 of the valve that is used for switch pipeline etc.In the slotted hole 22 of the length-wise axis at valve rod 1 center by dog link 2, engaging slidably has the transmission pin 3 that is arranged on the transmission piece 4 that fixedly is assemblied in rod 5, transmitting piece 4 moves along axial direction by excellent 5, the two end part of this rod 5 are assemblied in by hydrodynamic pressure mobile piston 71,81 in the air impeller 7 of being located at housing 9 both sides, 8 cylinder 72,82, and should be supported in housing 9 slidably by rod 5.And, transmit piece 4 and be set as and be supported in two end part slidably and be fixed on guide bar 6 on the housing 9.
In this dog link formula drive unit in the past, make dog link 2 swings by rod 5 and Jie by transmission pin 3, thus, valve rod 1 is applied rotating force, carry out the switch of valve, guide bar 6 and excellent 5 parallel configuration, the formation one also prevents excellent 5 bending.For this reason, the transmission pin 3 that satisfies intensity with use carries out the mode of interlock, is connected on the rod 5 that drives integratedly with piston 71,81 transmitting piece 4.
Model utility problem to be solved
There is following problem in aforesaid dog link formula drive unit: piston, rod 5 and do not make directly swing of dog link 2 with the transmission piece 4 of its formation one.The swing of dog link 2 is to be situated between to be undertaken by the transmission piece 4 that directly is fixed on by pin 3 on the rod 5, so its turning radius is not enough, also restricted to the output torque, the scale of installing self has also become greatly.
The model utility content
The utility model forms in order to solve above-mentioned problem, and it provides a kind of dog link formula drive unit, and this device can make the output torque height that makes the output torque ratio drive unit in the past of dog link swing and rotation acquisition by the slip of transmitting piece.
Be used for solving the method for problem
Dog link formula drive unit of the present utility model comes switch valve by the bar that rotation drives the valve be located at pipeline etc., comprising: housing, the major component of taking in this drive unit; Dog link is fixed on the described valve rod and carries out the mode of the switch of described valve with the end, swings centered by described valve rod; Transmit piece, supported sliding freely in order to make this dog link swing, and the pushing portion that has near the of the other end of being connected to described dog link and be oppositely arranged; Guide bar, two end part are fixed on the described housing, and are used for supporting sliding freely described transmission piece; Rod, be fixed in described transmission piece, and be used for making described transmission piece mobile sliding freely along described guide bar, and driver, be located at the sidewall of at least one side of described housing, and constitute by the end that described rod is fixedly arranged and by the piston in the cylinder of fluid pressure actuated, punching type rod etc.
Above-mentioned dog link formula drive unit is characterised in that, guide the guide bar of described transmission piece to be disposed at the distal side of pendulum radius of described dog link and positioning and fixing in described housing, chimeric on the described rod fixedly have described transmission piece, and described rod is supported in the sidewall of described housing sliding freely.
In addition, above-mentioned dog link formula drive unit is characterised in that, the driver that described rod is slided is located at the two side of described housing, and one in the described driver can reach as opening the driver that described valve uses and play a role, and the opposing party in the described driver can be used in and closes described valve.
The driver of above-mentioned dog link formula drive unit is characterised in that, is located at the sidewall of a side, and by carrying out air feed and exhaust at the piston both sides of described driver switch fluids pressure to drive.
In addition, above-mentioned dog link formula drive unit is characterised in that, is provided with tight fixed bolt highlightedly to the inside sidewalls of described housing, and this tight fixed bolt is set as the collision of avoiding described transmission piece and described sidewall by this tight fixed bolt, and the position is set.
And then, above-mentioned dog link formula drive unit is characterised in that, described dog link is set as between the pushing portion that sandwiches described transmission piece, and in order to strengthen intensity, and the wide reinforcing part of width that will sandwich part than the quilt of described pushing portion is located at described dog link integratedly.
The model utility effect
Dog link formula drive unit of the present utility model comes switch valve by the bar that rotation drives the valve be located at pipeline etc., comprising: housing, the major component of taking in this drive unit; Dog link is fixed on the described valve rod and carries out the mode of the switch of described valve with the end, swings centered by described valve rod; Transmit piece, supported sliding freely in order to make this dog link swing, and the pushing portion that has near the of the other end of being connected to described dog link and be oppositely arranged; Guide bar, two end part are fixed on the described housing, and are used for supporting sliding freely described transmission piece; Rod, be fixed in described transmission piece, and be used for making described transmission piece mobile sliding freely along described guide bar, and driver, be located at the sidewall of at least one side of described housing, and constitute by the end that described rod is fixedly arranged and by the piston in the cylinder of fluid pressure actuated, punching type rod etc., so, pushing portion by the transmission piece that closes with rod keying integratedly makes the dog link swing, thus, the output torque that can obtain to make valve rod to rotate, and can obtain the more excellent device of device phase specific strength that engages with pin by means of dog link and rod.
In the above-mentioned dog link formula drive unit, guide the guide bar of described transmission piece to be disposed at the distal side of pendulum radius of described dog link and positioning and fixing in described housing, chimeric on the described rod fixedly have a described transmission piece, and described rod is supported in the sidewall of described housing sliding freely, so, make the sliding mode motion stable that rod carries out of passing through of transmitting piece, and can make the pendulum radius centered by valve rod of oscillating motion of dog link elongated, in its possible scope, obtain the height output torque that produces by turning radius.
In addition, in the above-mentioned dog link formula drive unit, the driver that described rod is slided is located at the two side of described housing, one of described driver can reach as opening the driver that described valve uses and play a role, the opposing party of described driver can be used in and closes described valve, so, can be for opening or closing of valve make rod produce sliding movement by each driver, and the switch drive of certain valve can be provided.
The driver of above-mentioned dog link formula drive unit is located on the sidewall of a side, and can be by carrying out air feed and exhaust at the piston both sides of driver switch fluids pressure to drive, so, can carry out the driving of device with necessary least equipment according to purposes.
In addition, above-mentioned dog link formula drive unit is provided with tight fixed bolt highlightedly to the inside sidewalls of described housing, this tight fixed bolt is set as the collision of avoiding described transmission piece and described sidewall by this tight fixed bolt, and the position set, so, except being the safety installations, the sliding movement of giving at the rod of the oscillating motion of the dog link of enclosure interior can also be limited in the necessary predetermined range.
And then, in the above-mentioned dog link formula drive unit, above-mentioned dog link is set as between the pushing portion that sandwiches described transmission piece, and in order to strengthen intensity, the wide reinforcing part of width that will sandwich part than the quilt of described pushing portion is located at described dog link integratedly, so, can improve the intensity of dog link self, and can carry out the adjusting of the intensity of dog link corresponding to the load that valve rotates.
Description of drawings
Fig. 1 is the cut-away section explanatory drawing of the dog link formula drive unit of mode of execution of the present utility model.
Fig. 2 is the stereogram that is used for the dog link of dog link formula drive unit of the present utility model.
Fig. 3 is the stereogram that makes up the transmission piece that drives with dog link shown in Figure 2.
Fig. 4 is the stereogram of the end that is reinforced part of dog link shown in Figure 2.
Fig. 5 is the sectional drawing that is reinforced part of dog link shown in Figure 2.
Fig. 6 acts on dog link of the present utility model for expression and transmits the force diagram of the relation of the power between the piece.
Fig. 7 has used the punching type piston to be used as the cut-away section explanatory drawing of other mode of executions of the driver of dog link formula drive unit of the present utility model.
Fig. 8 is the cut-away section explanatory drawing of the dog link formula drive unit of mode of execution in the past.
Fig. 9 obtains to export the explanatory drawing of torque for the dog link that is used for the dog link formula drive unit by mode of execution of the present utility model and the driving of transmitting piece.
Among the figure:
1 valve rod
2 dog links
3 transmit pin
4 transmit piece
5 rods
6 guide bar
The driver of 7 one sides
The driver of 8 opposite sides
9 housings
10 connecting tubes
The chimeric axis hole of 12 valve rods
14 valve rod keys
22 slotted holes
24 dog link axle sleeves
25 arms
26 reinforcing parts
41 pushing portions
42 blocks
44 guide bar embedding holes
46 pin-and-holes
48 blocks
52 fixing pins
71 open the side piston
72 open the side cylinder
74 run through the tight fixed bolt nut
81 close the side piston
82 close the side cylinder
94 bolts
95 loam cakes
100 punching type pistons
712 O shapes ring
731 open side air gateway
823 close side air gateway
Embodiment
Below, with reference to Fig. 1～Fig. 7 and Fig. 9, mode of execution of the present utility model is illustrated.Moreover, the part that makes the reference symbol part identical with Fig. 8 as the identical in fact component parts of expression is described.
If with reference to Fig. 1 a mode of execution of the present utility model is described, then dog link formula valve operating device is positioned at the inside of the housing 9 that inner mode arranges at the valve rod 1 with the valve of pipeline etc., and assembling swingably is provided be used to the dog link 2 that valve rod 1 is rotated centered by the axle center of valve rod 1.Be provided with transmission piece 4 in dog link 2 assemblings, this transmission piece 4 is embedded in rod 5, and by pin 52 be fixed in the rod 5, wherein, the end of this rod 5 is fixed in by nut on the cylinder 72,82 piston 71,81 of driver 8 of opposite side of the driver 7 of a side that constitutes the valve open side and valve closing side.As shown in Figure 3, be formed with embedding hole 44 at transmission piece 4, be parallel to the guide bar 6 that fixedly is assemblied on the housing 9 away from the rod 5 of valve rod 1 side and two end part and be embedded in this embedding hole 44 to support the mode of transmitting piece 4 slidably, make the driving of transmitting piece 4 stable, and structure is strengthened, particularly pass through the flexural strength of guide bar 6 stirrups 5.
As shown in Figure 2, dog link 2 is provided with the dog link axle sleeve 24 that forms one with valve rod by the mode of key 14 one rotation, have the chimeric axis hole 12 of valve rod of the dog link axle sleeve 24 of this necessary length with regulation, and be provided with arm 25 from the peripheral part of dog link axle sleeve 24 along the outstanding specific length of identical radial direction in the mode that also is sandwiched in the opposition side that transmits piece 4.Transmission piece 4 as shown in Figure 3 is being provided with a pair of pushing portion 41,41 that has semi-circular cross-section roughly in two bights away from rod 5 towards two arms 25 of dog link 2,25 both sides, even and arm 25 swing, the also shapes that can obtain to contact smoothly of formation dog link 2.This pushing portion 41,41 is set to also can accept in the back side of Fig. 3 the arm 25 of opposite side.
When the valve of being located at pipeline etc. carried out switch, the dog link formula drive unit of above-mentioned formation played a role as follows.In the following description, the driver 7 by a side drives when valve open, and the driver 8 by opposite side drives when valve closing.
During valve open, if supply pressure air between the piston 71 in from the air gateway 731 of the driver 7 of a side to cylinder 72 and the lid 73 of shifter cylinder 72, and promotion piston 71, together move to the position of piston that is illustrated by the broken lines with rod 5, then dog link 2 is rocked to the position that double dot dash line is represented from the position that solid line is represented in Fig. 1.At this moment, transmit piece 4 and form one by pin 52 and rod 5, so, coexist with rod 5 movement one and to slide on the guide bar 6, the arm 25 of the dog link 2 that contact with the pushing portion 41 on Fig. 1 right side between the pushing portion 41,41 that transmits piece 4 on one side left direction move one side and push by pushing portion 41, and the center that begins with valve rod by rod 5 movement of direction left is axle center direction swing left, make arm 25 be rocked to the position of the double dot dash line of dog link 2, and valve rod is rotated, can carry out opening of valve.
In addition, when the driver 8 of opposite side drives, identical with the driver 7 of a side, by from the air gateway 823 of the lid 83 of the end of being located at shifter cylinder 82 to the pressure air of supplying with between lid 83 and the piston 81, piston 81 is moved to right, move to right with the fixing rod of piston 81 one 5, make and transmit piece 4 moves to solid line from the position of double dot dash line position, so, the arm 25 of the dog link 2 that contact and be pushed with the pushing portion 41 that transmits piece 4 is swung, valve rod 1 is rotated, can carry out closing of valve.
Below, the advantage of above-mentioned dog link formula drive unit is illustrated.Before this, with reference to the force diagram of Fig. 6, in the past dog link formula drive unit is illustrated.As its prerequisite, if will be from the valve rod axle center be made as H to the distance at the center of rod 5, will be from excellent center to guide bar 6 distance also be made as H, then 6 distance is 2H from the valve rod center to guide bar.The power F that produce and transmit to rod 5 from piston 71,81 only pass to rod 5, and only the power F by rod 5 makes dog link 2 swings.Thus, as shown in Figure 6, be applied to the torque T=RW on the bar axle, at this, R
1=F/cos θ, H=W/cos θ, so, if establish T=FH/cos
2θ, θ=45 °, T=2FH η (η=efficient) then, the guide bar 6 parallel with transmitting piece 4, rod 5 only be the support on excellent 5 the crooked equal strength, torque does not increase.In the utility model, because it is firm to transmit piece 4, same power F also is passed to the pushing portion 41,41 that almost is positioned at the transmission piece 4 of same position with guide bar 6, so, can produce the output higher than Fig. 6 by the size same with the Fig. 6 that strengthens with guide bar 6.In addition, the assembly of accepting the position of standard-sized sheet or complete shut-down with straight line can be become from rotation in the past, the advantage that the remaining force with bending of not making etc. plays a role at tight fixed bolt 92,93 etc.
In addition, if calculate the output torque of the dog link 2 in the dog link formula drive unit of the present utility model, then can be illustrated by action diagram shown in Figure 9.The power F at above-mentioned excellent 5 center passes to by the whole transmission piece 4 shown in the rectangular intersection line of central part.Therefore, if the distance between valve rod, rod 5, the center of guide bar 6 is made as H respectively, the tilt angle of the dog link 2 of this moment is made as θ, then the relation of each position becomes the relation shown in the explanatory drawing of Fig. 9.The output torque T that draws thus can obtain by following formula.
That is, T=2lL, at this, 2l=F/cos θ, L=2H/cos θ.
T=F2H/cos
245 ° at this, if θ=45 °, then
T=F·2H/cos
245°=2·F·2H=4FH。
Moreover the output torque that the device by in the past obtains is T=2FH.
In dog link formula drive unit of the present utility model, also have from the arm 25 of the dog link 2 of extend round and round position, valve rod center transmitting piece 4, so this arm 25 is for extending to pushing portion 41,41 constructional more farther than guide bar 6 outside.This length is represented with P in Fig. 1, in addition, if also utilize the width of arm 25, then the center of the arm 25 of dog link 2 becomes the side of the width direction of arm 25, so even the angle of dog link 2 is identical, the arm of dog link 2 25 and pushing portion 41,41 bearing surface become big, therefore, can obtain higher output torque.
In this case, tilt 5 ° the output torque T of position of the arm 25 of dog link 2 is as follows:
That is, T=WL is at this, WL=(2l+P) L=F/cos θ, L=2H/cos θ.
T=F2H/cos
2θ is at this, if θ=45 °+5 °=50 °, and 1/cos then
2θ=2.42,
So, T=4.84FH.
At this, if in the past dog link formula drive unit and the required air consumption of rotation of valve rod of the present utility model are compared, then be identical as described below.This be because, even the size of piston and rod is made as identical, and make the output of output torque more, piston also is identical with excellent driving amount.
Consumed cabin air amount=(π/4) D
2The XL of+π/4(D2-d2)
At this, the diameter of D=cylinder, the diameter of d=rod, the length of L=valve rod half-twist.
But according to the utility model, the transmission of the power relevant with torque is following realization: guide bar 6 is embedded in is located at the embedding hole 44 that transmits piece 4, and do reciprocating action by transmitting 4 pairs of guide bar 6 channeling conducts of piece.And, be provided with pushing portion 41,42 in the two sides side of transmitting piece 4, make arm 25 rotations of dog link 2 by this pushing portion.Yet, the stroke of the rod 5 of hydrodynamic pressure effect with installed in the past identical, so have the big feature that the air consumption figure does not change.
In the above-described embodiment, the pressure air that is subjected to by cylinder 72,82 (can be N
2Gas etc.) pass to rod 5 power and do not pass to dog link 2, but pass to the transmission piece 4 that links by pin 52, since respectively when valve open and valve closing time pushing be located at the pushing portion 41 that transmits piece 4, the both sides of the arm 25 of the dog link 2 between 41, so, make dog link 2 swings by this power, thus, under the situation of the section coefficient deficiency of dog link 2, as as Fig. 4 of the stereogram of the end of dog link 2 and as arm 25, the sectional drawing of 25 intermediate portion shown in Figure 5 also can arrange not and the pushing portion 41 that transmits piece 4, the reinforcing part of the one of 41 butts.
In addition, not only be to use the dog link formula drive unit of the driver of the piston of using above-mentioned mode of execution, rod, as driver, also can have used punching type piston 100 as shown in Figure 7 to make rod 5 motions.
In the above-described embodiment, though at length do not describe and illustrate, be used for the position that the rotatably supported bearing of rod, the O shape ring etc. that is used for sealing can be used in suitable necessity certainly.
And then the interval between valve rod, rod and the guide bar in the explanatory drawing of output torque as shown in Figure 9 can freely be changed, and by changing these at interval, also can change the output torque.For driver 7,8, the driver 7 on the right side among Fig. 1 as the valve open side, is illustrated the driver 8 in left side, on the contrary as the valve closing side, also can be with the driver in left side as the valve open side, the driver on right side is used as the valve closing side.
In addition, driver also can only be located at a side of housing, drives the slip of the rod that transmits piece by air-breathing, the exhaust of carrying out pressure air in the piston both sides.
As mentioned above, dog link formula drive unit of the present utility model is not limited to above-mentioned mode of execution, clearly, can implement in the described technical scope of claim.
Claims (6)
1. dog link formula drive unit, the bar that drives the valve of being located at pipeline etc. by rotation comes switch valve, comprising:
Housing, the major component of taking in this drive unit;
Dog link is fixed on the described valve rod and carries out the mode of the switch of described valve with the end, swings centered by described valve rod;
Transmit piece, supported sliding freely in order to make this dog link swing, and the pushing portion that has near the of the other end of being connected to described dog link and be oppositely arranged;
Guide bar, two end part are fixed on the described housing, and are used for supporting sliding freely described transmission piece;
Rod is fixed in described transmission piece, and is used for making described transmission piece mobile sliding freely along described guide bar, and
Driver is located at the sidewall of at least one side of described housing, and constitutes by the end that described rod is fixedly arranged and by the piston in the cylinder of fluid pressure actuated, punching type rod etc.
2. dog link formula drive unit according to claim 1 is characterized in that,
Guide the guide bar of described transmission piece to be disposed at the distal side of pendulum radius of described dog link and positioning and fixing in described housing, chimeric on the described rod fixedly have described transmission piece, and described rod is supported in the sidewall of described housing sliding freely.
3. dog link formula drive unit according to claim 1 is characterized in that,
Described driver is located at the two side of described housing, and one in the described driver can reach as opening the driver that described valve uses and play a role, and the opposing party in the described driver can be used in and closes described valve.
4. dog link formula drive unit according to claim 1 is characterized in that,
The driver of described dog link formula drive unit is located at the sidewall of a side, and by carrying out air feed and exhaust at the piston both sides of described driver switch fluids pressure to drive.
5. dog link formula drive unit according to claim 1 is characterized in that,
Inside sidewalls to described housing is provided with tight fixed bolt highlightedly, and this tight fixed bolt is set as the collision of avoiding described transmission piece and described sidewall by this tight fixed bolt, and the position is set.
6. dog link formula drive unit according to claim 1 is characterized in that,
Described dog link is set as between the pushing portion that sandwiches described transmission piece, and in order to strengthen intensity, and the wide reinforcing part of width that will sandwich part than the quilt of described pushing portion is located at described dog link integratedly.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320177483 CN203162310U (en) | 2013-04-10 | 2013-04-10 | Yoke-type driving device of rotation stopping bar |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320177483 CN203162310U (en) | 2013-04-10 | 2013-04-10 | Yoke-type driving device of rotation stopping bar |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203162310U true CN203162310U (en) | 2013-08-28 |
Family
ID=49023493
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320177483 Expired - Fee Related CN203162310U (en) | 2013-04-10 | 2013-04-10 | Yoke-type driving device of rotation stopping bar |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203162310U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104791543A (en) * | 2015-04-21 | 2015-07-22 | 中国石油大学(北京) | Mechanical emergency shutdowm valve |
| CN106438563A (en) * | 2016-11-25 | 2017-02-22 | 杭州德联自动化设备有限公司 | Slidable large torque angle travel cylinder |
| CN109827003A (en) * | 2017-11-23 | 2019-05-31 | 咸光植 | Utilize the valve driver of ratchet |
| US11149874B1 (en) | 2021-05-14 | 2021-10-19 | Spears Manufacturing Co. | Valve operator assembly |
| WO2022240419A1 (en) * | 2021-05-14 | 2022-11-17 | Spears Manufacturing Co. | Valve operator assembly |
-
2013
- 2013-04-10 CN CN 201320177483 patent/CN203162310U/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104791543A (en) * | 2015-04-21 | 2015-07-22 | 中国石油大学(北京) | Mechanical emergency shutdowm valve |
| CN104791543B (en) * | 2015-04-21 | 2017-03-15 | 中国石油大学(北京) | The urgent block valve of mechanical type |
| CN106438563A (en) * | 2016-11-25 | 2017-02-22 | 杭州德联自动化设备有限公司 | Slidable large torque angle travel cylinder |
| CN109827003A (en) * | 2017-11-23 | 2019-05-31 | 咸光植 | Utilize the valve driver of ratchet |
| CN109827003B (en) * | 2017-11-23 | 2020-08-21 | Vtl有限公司 | Valve actuator using ratchet |
| US11149874B1 (en) | 2021-05-14 | 2021-10-19 | Spears Manufacturing Co. | Valve operator assembly |
| US11473694B1 (en) | 2021-05-14 | 2022-10-18 | Spears Manufacturing Co. | Valve operator assembly |
| WO2022240419A1 (en) * | 2021-05-14 | 2022-11-17 | Spears Manufacturing Co. | Valve operator assembly |
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Legal Events
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|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130828 Termination date: 20170410 |
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| CF01 | Termination of patent right due to non-payment of annual fee |