CN201218351Y - Hydraulic cut-off valve - Google Patents
Hydraulic cut-off valve Download PDFInfo
- Publication number
- CN201218351Y CN201218351Y CNU2008200597347U CN200820059734U CN201218351Y CN 201218351 Y CN201218351 Y CN 201218351Y CN U2008200597347 U CNU2008200597347 U CN U2008200597347U CN 200820059734 U CN200820059734 U CN 200820059734U CN 201218351 Y CN201218351 Y CN 201218351Y
- Authority
- CN
- China
- Prior art keywords
- hydraulic cylinder
- valve
- oil hydraulic
- piston rod
- base
- 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
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- Fluid-Driven Valves (AREA)
- Lift Valve (AREA)
Abstract
The utility model discloses a hydraulic stop valve comprising a valve body, a valve core, a hydraulic cylinder, a ring flange and a rotating baffle. The hydraulic cylinder comprises a piston, a piston rod, a second piston rod and a base; the base of the hydraulic cylinder is fixedly connected with the valve body through a connecting rod; the piston rod is connected with the valve core through a connecting nut; the ring flange is connected with the base of the hydraulic cylinder through the connecting rod; the ring flange is provided with a central hole; the rotating baffle is connected with the ring flange through a pin shaft; the rotating baffle can rotate round the pin shaft; the head part of the second piston is provided with a tightening nut; and the end part of the tightening nut is attached to the rotating baffle. The hydraulic stop valve can prevent the abnormal opening and closing of the valve to improve the work reliability.
Description
Technical field
The utility model relates to a kind of valve, particularly a kind of liquid operated globe valve of avoiding valve to open unusually.
Background technique
Liquid operated globe valve is to move by oil hydraulic cylinder to open and close stop valve, is purpose to reach the fast shut-off unlatching.Fig. 1 is the structural representation of existing liquid operated globe valve, existing liquid operated globe valve comprises valve body 10, spool 11 and oil hydraulic cylinder 20, oil hydraulic cylinder 20 comprises piston 21, piston rod 22 and base 23, the base 23 of oil hydraulic cylinder 20 is fixedlyed connected by connecting rod 30 with valve body 10, one end of every connecting rod 30 is threaded with counterbore on the valve body 10, the other end passes the through hole on the base 23, and connects fastening with nut.Described piston rod 22 is connected by attaching nut 40 with spool 11.When the piston 21 below cavity oil-feeds of oil hydraulic cylinder 20, pressure acts on the piston 21, drive piston rod 22 and upwards produce pulling force, spool 11 basal areas are also had by the input pressure effect and upwards produce thrust simultaneously, owing to connect with attaching nut 40 between piston rod 22 and the spool 11, therefore under the double action of power, spool 11 moves upward, thereby opens stop valve.On the contrary, when above the piston 21 of oil hydraulic cylinder 20 during the cavity oil-feed, pressure acts on the piston 21, because piston 21 areas greater than spool 11 valve port areas, spool 11 is moved downward, so stop valve are closed.
But because stop valve is when closing, oil hydraulic cylinder 20 will remain the thrust that pressure produces piston 21, and must act on the thrust of spool 11 greater than the stop valve input pressure, otherwise stop valve can open automatically, and therefore, the reliability after it is closed is relatively poor.When situations such as pressure reduction or decompression are taken place, may cause this valve to be opened unusually, may cause the executive component abnormal operation of hydraulic system like this, the hydraulic system Security is reduced greatly.Not only may cause the damage of equipment, also may staff's life safety be threatened.
Summary of the invention
For addressing the above problem, the utility model provides a kind of liquid operated globe valve, guarantees that stop valve is not opened after closing unusually, guarantees its reliability.
For achieving the above object, liquid operated globe valve of the present utility model, comprise: valve body, spool, oil hydraulic cylinder, flange plate and butterfly, described oil hydraulic cylinder comprises piston, piston rod, second piston rod and base, the base of described oil hydraulic cylinder is fixedlyed connected by connecting rod with described valve body, and described piston rod is connected by the attaching nut with described spool; Described flange plate is fixedlyed connected with the base of described oil hydraulic cylinder by connecting rod, and described flange plate is provided with center hole; Described butterfly is connected by bearing pin with flange plate, and described butterfly can rotate around bearing pin; The head of described second piston rod is provided with the tensioner nut, and the end of described tensioner nut and described butterfly are fitted.
Liquid operated globe valve of the present utility model can prevent the unauthorised opening of valve, increases the reliability of liquid operated globe valve work, the Security that has improved hydraulic system.
Description of drawings
Fig. 1 is the structural representation of existing liquid operated globe valve;
Fig. 2 is the structural representation of liquid operated globe valve of the present utility model;
The schematic top plan view of butterfly lock state when Fig. 3 closes for liquid operated globe valve of the present utility model;
Fig. 4 is the schematic top plan view of the butterfly unlock state of liquid operated globe valve of the present utility model.
Embodiment
Fig. 2 is the structural representation of liquid operated globe valve of the present utility model.As shown in the figure, liquid operated globe valve of the present utility model comprises: valve body 100, spool 101, oil hydraulic cylinder 200, flange plate 500 and butterfly 600.
Described oil hydraulic cylinder 200 comprises piston 201, piston rod 202, base 203 and second piston rod 204, and the base 203 of oil hydraulic cylinder 200 is fixedlyed connected by connecting rod 300 with valve body 100.Described piston rod 202 is connected by attaching nut 400 with spool 101.
Compare with existing liquid operated globe valve, oil hydraulic cylinder changes two rod oil hydraulic cylinders into by existing asymmetric servo cylinder.The head of described second piston rod 204 is provided with tensioner nut 700.Tensioner nut 700 is connected with the head threads of second piston rod 204.
Butterfly 600 is connected by bearing pin 601 with flange plate 500, and described butterfly 600 can be around bearing pin 601 rotations.Butterfly 600 can block the center hole of flange plate 500 by rotation.
The schematic top plan view of butterfly lock state when Fig. 3 closes for liquid operated globe valve of the present utility model.Liquid operated globe valve of the present utility model, stop valve is when needs are closed and when needing positive lock, spool 101 is pressed down, butterfly 600 is rotated in the flange plate 500 bay live flange plate center hole 501, and rotation tensioner nut 700 fits itself and butterfly 600, and the stop valve realization is reliably closed.
Open stop valve as long as rotation tensioner nut 70 is thrown off itself and butterfly 600 as need, open butterfly 600 then and recover the stop valve holding function.As shown in Figure 4, Fig. 4 is the schematic top plan view of the butterfly unlock state of liquid operated globe valve of the present utility model.Second piston rod 204 and the tensioner nut 700 of this moment can freely stretch in the center hole 501 of flange plate 500.
Claims (2)
1, a kind of liquid operated globe valve comprises: valve body, spool and oil hydraulic cylinder, and described oil hydraulic cylinder comprises piston, piston rod and base, and the base of described oil hydraulic cylinder is fixedlyed connected by connecting rod with described valve body, and described piston rod is connected by the attaching nut with described spool; It is characterized in that, also comprise flange plate and butterfly, described flange plate is fixedlyed connected with the base of described oil hydraulic cylinder by connecting rod, and described flange plate is provided with center hole; Described butterfly is connected by bearing pin with flange plate, and described butterfly can rotate around bearing pin; Described oil hydraulic cylinder also comprises second piston rod, and the head of described second piston rod is provided with the tensioner nut, and the end of described tensioner nut and described butterfly are fitted.
2, liquid operated globe valve as claimed in claim 1 is characterized in that, the connecting rod that described flange plate is connected with the base of described oil hydraulic cylinder is three, and the two ends of described connecting rod are fixed by nut.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200597347U CN201218351Y (en) | 2008-06-13 | 2008-06-13 | Hydraulic cut-off valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200597347U CN201218351Y (en) | 2008-06-13 | 2008-06-13 | Hydraulic cut-off valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201218351Y true CN201218351Y (en) | 2009-04-08 |
Family
ID=40541186
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008200597347U Expired - Fee Related CN201218351Y (en) | 2008-06-13 | 2008-06-13 | Hydraulic cut-off valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201218351Y (en) |
-
2008
- 2008-06-13 CN CNU2008200597347U patent/CN201218351Y/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 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: 20090408 Termination date: 20160613 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |