CN103032621A - Butterfly valve drive hydraulic cylinder with locking device - Google Patents
Butterfly valve drive hydraulic cylinder with locking device Download PDFInfo
- Publication number
- CN103032621A CN103032621A CN2012105890941A CN201210589094A CN103032621A CN 103032621 A CN103032621 A CN 103032621A CN 2012105890941 A CN2012105890941 A CN 2012105890941A CN 201210589094 A CN201210589094 A CN 201210589094A CN 103032621 A CN103032621 A CN 103032621A
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- hydraulic cylinder
- cylinder
- piston rod
- butterfly valve
- cylinder body
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Abstract
The invention discloses a butterfly valve drive hydraulic cylinder with a locking device. A limiting ring is arranged on a front section of a rod body of a piston rod, which extends out of a cylinder body, a vertical locking hydraulic cylinder is connected above the front end of the cylinder body, an inlet and an outlet are formed in a lower cylinder cover, a spring is arranged between a piston and the upper cylinder cover in the cylinder body, the lower end of the piston rod, which extends out of the lower cylinder cover, is connected with a fork locking plate, and when the piston rod of the drive hydraulic cylinder is retracted and the piston rod of a locking hydraulic cylinder extends out downwards, a semi-round hole of the fork locking plate is propped against the front side of the limiting ring on the piston rod of the drive hydraulic cylinder. The drive hydraulic cylinder is connected with the locking hydraulic cylinder, and the lower end of the piston rod of the locking hydraulic cylinder is connected with the fork locking plate, so that a closed butterfly valve can be in a locking state. Once a hydraulic system and elements of the drive hydraulic cylinder fail to work or are falsely operated and the piston rod of the drive hydraulic cylinder is caused to tend to extend out, a butterfly valve body, a butterfly valve foot base or a pipeline which is connected with the butterfly valve cannot be damaged, and the butterfly valve closing state locking device is reasonable in position and structure.
Description
Technical field
The present invention relates to a kind of butterfly valve and drive oil hydraulic cylinder, particularly a kind of butterfly valve drives the closing-locking device of oil hydraulic cylinder.
Background technique
Large-diameter butterfly valve need to be used the Driven by Hydraulic Cylinder opening and closing.Be connected with connecting rod shank between the hydraulic cylinder piston rod of driving butterfly valve opening and closing and the valve shaft, when hydraulic cylinder piston rod stretches out, by the connecting rod shank opened butterfly valve, during the hydraulic cylinder piston rod indentation, close butterfly valve by connecting rod shank.
When the pipe fitting in butterfly valve downstream needs repairing, close with the Driven by Hydraulic Cylinder butterfly valve, the maintenance man could be safely in the pipeline in downstream or pipeline carry out maintenance operation to pipe fitting.When butterfly plate is in the complete shut-down state, for maintenance man's safety, the closed condition of butterfly valve is locked, the butterfly valve of Driven by Hydraulic Cylinder has closing-locking device.
In the prior art, butterfly valve closed condition locking device is mounted in the holding down bolt on the body of butterfly valve, after butterfly valve cuts out, blocks connecting rod shank between hydraulic cylinder piston rod and the valve shaft with holding down bolt, prevents the connecting rod shank action, makes the butterfly valve closed condition locked.
This butterfly valve closed condition locking device breaks down at driving oil hydraulic cylinder hydraulic systems and components, or operation misoperation, hydraulic cylinder piston rod can stretch out, by connecting rod shank active force is added on the holding down bolt on the body of butterfly valve, because the driving force of oil hydraulic cylinder is larger, above-mentioned fault or misoperation probably cause the destruction of the pipeline that links to each other to the lower margin basis of butterfly valve body, butterfly valve or with butterfly valve by the holding down bolt on the butterfly valve body.Mounting point and the structure of this butterfly valve closed condition locking device are very unreasonable.
Summary of the invention
The objective of the invention is in order to overcome above-mentioned deficiency, propose a kind of mounting point and the butterfly valve driving oil hydraulic cylinder with locking device rational in infrastructure.
The present invention is achieved using the following method.
Butterfly valve with locking device drives oil hydraulic cylinder cylinder body, piston is arranged in the cylinder body, piston is connected with the piston rod that stretches out the cylinder body front end, before the cylinder body, rear side has the hydraulic medium that communicates with inner chamber of cylinder block to import and export, piston rod stretches out limited location annulus on the body of rod leading portion of cylinder body, the top of cylinder body front end is connected with the perpendicular locking oil hydraulic cylinder of axis of axis and cylinder body, the locking oil hydraulic cylinder has cylinder body, the top and bottom of cylinder body are connected with respectively cylinder cap, the piston rod that links to each other with piston in the cylinder body stretches out from lower cylinder cap, there is the hydraulic medium that communicates with inner chamber of cylinder block to import and export on the lower cylinder cap, in the cylinder body, between piston and the upper cylinder cover spring is arranged, the lower end of piston rod is connected with the fork-shaped locking plate, and the semicircle orifice that matches with the external diameter that drives hydraulic cylinder piston rod is arranged on the prong of fork-shaped locking plate, drives oil hydraulic cylinder
The piston rod indentation time, when the piston rod that locks oil hydraulic cylinder simultaneously stretches out downwards, the semicircle orifice of fork-shaped locking plate is against the front that drives hydraulic cylinder piston rod upper limit annulus.
In the normal state, the locking hydraulic cylinder piston rod stretches out because of the power that the spring in the locking oil hydraulic cylinder is stretched out downwards, and the semicircle orifice of locking hydraulic cylinder piston rod lower end fork-shaped locking plate is against on the piston rod that drives oil hydraulic cylinder.If the fork-shaped locking plate is in the front of spacing annulus, the piston rod that drives oil hydraulic cylinder can not stretch out, and only has the fork-shaped locking plate in the back of spacing annulus, and the piston rod that drives oil hydraulic cylinder just can stretch out.
After hydraulic medium enters the inner chamber of locking oil hydraulic cylinder from the hydraulic medium that locks cylinder cap under the oil hydraulic cylinder, the piston that can promote to lock oil hydraulic cylinder overcomes spring force and moves upward, the piston rod indentation of locking oil hydraulic cylinder, the fork-shaped locking plate be raised to spacing annulus above, allow spacing annulus surmount the fork-shaped locking plate.
During use, allow locking hydraulic cylinder piston rod indentation with hydraulic pressure, the fork-shaped locking plate of locking hydraulic cylinder piston rod lower end leaves the spacing annulus that drives hydraulic cylinder piston rod, allowing the driving hydraulic cylinder piston rod stretch out with hydraulic pressure can drive the butterfly valve unlatching, can drive butterfly valve with the indentation of hydraulically-driven hydraulic cylinder piston rod and close.
After driving hydraulic cylinder piston rod indentation butterfly valve cuts out, allow the locking hydraulic cylinder piston rod stretch out downwards, the fork-shaped locking plate of locking hydraulic cylinder piston rod lower end is against on the piston rod that drives oil hydraulic cylinder and keeps off in the front that drives the spacing annulus of hydraulic cylinder piston rod, the piston rod that drives oil hydraulic cylinder can not be stretched out, allow the butterfly valve of closing be in the lock state.When lock state, in case the oil hydraulic cylinder hydraulic systems and components occurs to drive to break down, or operation misoperation, when causing the piston rod that drives oil hydraulic cylinder that the trend of stretching out is arranged, because of the spacing annulus front of fork-shaped locking plate gear at the driving hydraulic cylinder piston rod, the piston rod that drives oil hydraulic cylinder can not be stretched out, allow butterfly valve stably be in the lock state.
Driving oil hydraulic cylinder of the present invention is connected with the locking oil hydraulic cylinder, and the piston-rod lower end of locking oil hydraulic cylinder is connected with the fork-shaped locking plate, can allow the butterfly valve of closing be in the lock state.In case the oil hydraulic cylinder hydraulic systems and components occurs to drive to break down, or operation misoperation, when causing the piston rod that drives oil hydraulic cylinder that the trend of stretching out is arranged, guarantee can not produce butterfly valve to open driving force, can be to not causing the destruction of the pipeline that links to each other to the lower margin of butterfly valve body, butterfly valve basis or with butterfly valve, the position of this butterfly valve closed condition locking device and rational in infrastructure.
Below in conjunction with accompanying drawing, the present invention is further described.
Description of drawings
Fig. 1 cuts open schematic diagram according to the master office of looking that a kind of butterfly valve with locking device that invention scheme of the present invention proposes drives oil hydraulic cylinder;
Fig. 2 is that schematic diagram cuts open in the office of overlooking of Fig. 1;
Fig. 3 is the A-A cross-sectional schematic of Fig. 1.
Embodiment
Among Fig. 1 ~ Fig. 3, butterfly valve with locking device drives oil hydraulic cylinder cylinder body 1, piston 2 is arranged in the cylinder body, piston is connected with the piston rod 3 that stretches out the cylinder body front end, before the cylinder body, rear side has the hydraulic medium that communicates with inner chamber of cylinder block to import and export 4,5, piston rod stretches out limited location annulus 6 on the body of rod leading portion of cylinder body, the top of cylinder body front end is connected with the perpendicular locking oil hydraulic cylinder 7 of axis of axis and cylinder body by support 16, the locking oil hydraulic cylinder has cylinder body 8, the top and bottom of cylinder body are connected with respectively cylinder cap 9,10, the piston rod 11 that links to each other with piston in the cylinder body stretches out from lower cylinder cap, there is the hydraulic medium that communicates with inner chamber of cylinder block to import and export 12 on the lower cylinder cap, in the cylinder body, upper cylinder cover is connected with axially directed bar 17, in the cylinder body, the spring 13 that is enclosed within on the guide rod is arranged between piston and the upper cylinder cover, the lower end of piston rod is connected with fork-shaped locking plate 14, the semicircle orifice 15 that matches with the external diameter that drives hydraulic cylinder piston rod is arranged on the prong of fork-shaped locking plate, when driving the piston rod indentation of oil hydraulic cylinder, when the piston rod that locks simultaneously oil hydraulic cylinder stretched out downwards, the semicircle orifice of fork-shaped locking plate was against the front that drives hydraulic cylinder piston rod upper limit annulus.
Claims (1)
1. the butterfly valve with locking device drives oil hydraulic cylinder, include cylinder body, piston is arranged in the cylinder body, piston is connected with the piston rod that stretches out the cylinder body front end, before the cylinder body, rear side has the hydraulic medium that communicates with inner chamber of cylinder block to import and export, it is characterized in that: piston rod stretches out limited location annulus on the body of rod leading portion of cylinder body, the top of cylinder body front end is connected with the perpendicular locking oil hydraulic cylinder of axis of axis and cylinder body, the locking oil hydraulic cylinder has cylinder body, the top and bottom of cylinder body are connected with respectively cylinder cap, the piston rod that links to each other with piston in the cylinder body stretches out from lower cylinder cap, there is the hydraulic medium that communicates with inner chamber of cylinder block to import and export on the lower cylinder cap, in the cylinder body, between piston and the upper cylinder cover spring is arranged, the lower end of piston rod is connected with the fork-shaped locking plate, the semicircle orifice that matches with the external diameter that drives hydraulic cylinder piston rod is arranged, when driving the piston rod indentation of oil hydraulic cylinder on the prong of fork-shaped locking plate, when the piston rod that locks simultaneously oil hydraulic cylinder stretched out downwards, the semicircle orifice of fork-shaped locking plate was against the front that drives hydraulic cylinder piston rod upper limit annulus.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012105890941A CN103032621A (en) | 2012-12-29 | 2012-12-29 | Butterfly valve drive hydraulic cylinder with locking device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012105890941A CN103032621A (en) | 2012-12-29 | 2012-12-29 | Butterfly valve drive hydraulic cylinder with locking device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103032621A true CN103032621A (en) | 2013-04-10 |
Family
ID=48019840
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012105890941A Pending CN103032621A (en) | 2012-12-29 | 2012-12-29 | Butterfly valve drive hydraulic cylinder with locking device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103032621A (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20050132652A1 (en) * | 2003-12-23 | 2005-06-23 | Haibo Tong | Unlock mechanism for a rotary door operator |
| CN201606351U (en) * | 2009-11-30 | 2010-10-13 | 南京康尼机电股份有限公司 | Air driving device |
| CN102011764A (en) * | 2010-06-05 | 2011-04-13 | 常州液压成套设备厂有限公司 | Hydraulic cylinder locking device |
-
2012
- 2012-12-29 CN CN2012105890941A patent/CN103032621A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20050132652A1 (en) * | 2003-12-23 | 2005-06-23 | Haibo Tong | Unlock mechanism for a rotary door operator |
| CN201606351U (en) * | 2009-11-30 | 2010-10-13 | 南京康尼机电股份有限公司 | Air driving device |
| CN102011764A (en) * | 2010-06-05 | 2011-04-13 | 常州液压成套设备厂有限公司 | Hydraulic cylinder locking device |
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| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20130410 |