CN204553877U - The full balance stop valve of ultrahigh pressure - Google Patents
The full balance stop valve of ultrahigh pressure Download PDFInfo
- Publication number
- CN204553877U CN204553877U CN201520218366.6U CN201520218366U CN204553877U CN 204553877 U CN204553877 U CN 204553877U CN 201520218366 U CN201520218366 U CN 201520218366U CN 204553877 U CN204553877 U CN 204553877U
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- CN
- China
- Prior art keywords
- valve
- flap
- poppet shaft
- valve rod
- valve body
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- 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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- Mechanically-Actuated Valves (AREA)
Abstract
The utility model discloses the full balance stop valve of a kind of ultrahigh pressure, comprise valve body, valve seat, flap, poppet shaft, spool axle bed and valve rod, it is characterized in that: spool axle bed fixedly mounts, poppet shaft makes left and right sliding movement in spool axle bed, the right-hand member spindle nose of poppet shaft is fixedly connected with flap, valve rod slides up and down action on valve body, valve rod and poppet shaft are mutually an angle of 90 degrees, upper end and the Stem Mut screw thread of valve rod spin, the first helical rack of 45 degree of helical teeth is established in the lower end of valve rod, the second helical rack of 45 degree of helical teeth is established in the centre of poppet shaft, first helical rack and the second helical rack engage each other transmission, the left end of flap is connected with piston, and piston is provided with grommet near the cylindrical of flap, and form wedge cavities between grommet right side and flap to hold delta seal ring and O RunddichtringO, grommet is provided with pore by valve pocket and wedge cavities conducting.The utility model structure is simple, has double sealing structure, good seal performance, keying easy and flexible operation, is applicable on the high pressure valve of PN560bar.
Description
Technical field
The utility model relates to a kind of improvement invention of high-pressure stop valve.
Background technique
The open-shut device of stop valve is the flap of stopper, and flap is along the center line moving linearly of valve seat.Valve rod due to such valve open or shutoff stroke relatively short, and there is cutting function very reliably, again due to the change of valve seat port and the stroke direct proportionality of flap, be very suitable for the adjustment to flow.Therefore, stop valve is used widely in petroleum chemical industry.At present at the stop valve of high pressure applications, the action of its flap is rotated by valve rod to drive corresponding shifting block action, stir poppet shaft by shifting block again and then drive flap to carry out straight line motion, drive mechanism is quite complicated, so the size of body cavity can be caused to become large, the friction torque of valve rod and poppet shaft is also large simultaneously, is unfavorable for the high-voltage applications of stop valve; In addition, also there is the shortcoming that sealability is undesirable, keying operates not easy and flexible to a certain extent in existing high-pressure stop valve.
Summary of the invention
In view of current known technology Problems existing, the technical problems to be solved in the utility model is to provide a kind of structure simply, has the full balance stop valve of ultrahigh pressure of double sealing structure, good seal performance, keying easy and flexible operation.
The utility model is implemented by the following technical programs:
The full balance stop valve of ultrahigh pressure, comprise valve body, valve seat, flap, poppet shaft, spool axle bed and valve rod, valve body is provided with valve pocket, valve body left end is medium entrance, valve body right-hand member is media outlet, it is characterized in that: spool axle bed is fixedly installed on the middle valve body frame plate be provided with of valve pocket, poppet shaft makes left and right sliding movement in spool axle bed, the right-hand member spindle nose of poppet shaft is fixedly connected with described flap, described valve seat is fixed on valve body right-hand member, the surface of contact of flap and valve seat arranges metal hard-sealing respectively, described valve rod slides up and down action on valve body, valve rod and poppet shaft are mutually an angle of 90 degrees, upper end and the Stem Mut screw thread of valve rod spin, Stem Mut is fixedly connected with handwheel, the first helical rack of 45 degree of helical teeth is established in the lower end of valve rod, the second helical rack of 45 degree of helical teeth is established in the centre of described poppet shaft, first helical rack and the second helical rack engage each other transmission, when valve rod slides up and down action, first helical rack drives poppet shaft and flap to make left and right sliding movement by the second helical rack, the left end of described flap is connected with piston, piston is actively installed in the piston cavity that valve body frame plate has, described piston is provided with grommet near the cylindrical of flap, forming wedge cavities between grommet right side and flap to hold cross section is leg-of-mutton seal ring and O RunddichtringO, O RunddichtringO is positioned at the inner ring of seal ring, described grommet is provided with pore by valve pocket and wedge cavities conducting, and when valve is in closed condition, the external annular surface of seal ring is formed with the metal hard-sealing of valve seat and contacts.
Described flap is provided with equalizing orifice by media outlet and piston cavity conducting.
After adopting technique scheme, the attainable Advantageous Effects of the utility model is: 1. the transmission of valve rod and poppet shaft relies on the helical rack of a pair miter angle, drive mechanism is very simple, reduce the size of valve insertion, friction torque between valve rod and poppet shaft also can reduce, and is conducive to the high-voltage applications of stop valve; 2. when pressure medium is lower, by O RunddichtringO elastic force, the external annular surface of seal ring is contacted with the metal hard-sealing of valve seat, play initial sealing force, prevent medium from leaking when low-pressure, along with pressure medium more and more higher time, the pore of medium on grommet enters in wedge cavities, under the effect of medium high pressure, seal ring is outwards expanded, the external annular surface of seal ring is tightly pressed on the metal hard-sealing of valve seat, prevent medium from leaking when high pressure, good seal performance; 3. by the sealing of metal hard-sealing and the sealing of seal ring, between valve seat and flap, there is double sealing structure, improve sealing reliability; 4. the setting of equalizing orifice can balance the active force in valve seat and outside valve seat, makes the keying easy and flexible operation of stop valve.Owing to having These characteristics, so the utility model can be applicable on the high pressure valve of PN560bar very well.
Accompanying drawing explanation
The utility model has following accompanying drawing:
Fig. 1 is structural representation of the present utility model,
Fig. 2 is the drive mechanism figure of valve rod and poppet shaft,
Fig. 3 be Fig. 2 overlook directional diagram,
Fig. 4 is the structural drawing of poppet shaft,
Fig. 5 is the structural drawing of the second helical rack,
Fig. 6 is the structural drawing of valve rod,
Fig. 7 is the structural drawing of the first helical rack,
Fig. 8 is the I portion enlarged view of Fig. 1.
Embodiment
As shown in the figure, the full balance stop valve of ultrahigh pressure of the present utility model, comprise valve body 1, valve seat 9, flap 11, poppet shaft 12, spool axle bed 15 and valve rod 4, valve body 1 is provided with valve pocket 2, valve body 1 left end is medium entrance 1a, valve body 1 right-hand member is media outlet 1b, spool axle bed 15 is fixedly installed on the middle valve body frame plate 3 be provided with of valve pocket 2, valve body frame plate 3 and valve body 1 are one piece casting, poppet shaft 12 makes left and right sliding movement in spool axle bed 15, the right-hand member spindle nose of poppet shaft 12 is fixedly connected with described flap 11, described valve seat 9 is fixed on valve body 1 right-hand member, flap 11 arranges metal hard-sealing 21 respectively with the surface of contact of valve seat 9, described valve rod 4 loads valve body and to slide up and down action at valve body 1 from valve body 1 top, valve rod 4 and poppet shaft 12 are mutually an angle of 90 degrees, upper end and Stem Mut 5 screw thread of valve rod 4 spin, Stem Mut 5 is fixedly connected with handwheel 6, the first helical rack 14 of 45 degree of helical teeth is established in the lower end of valve rod 4, the second helical rack 13 of 45 degree of helical teeth is established in the centre of described poppet shaft 12, first helical rack 14 and the second helical rack 13 engage each other transmission, when valve rod 4 slides up and down action, first helical rack 14 drives poppet shaft 12 and flap 11 to make left and right sliding movement by the second helical rack 13, the left end of described flap 11 is fixedly connected with piston 8, piston 8 is actively installed in the piston cavity 7 that valve body frame plate 3 has, described piston 8 is provided with grommet 16 near the cylindrical of flap 11, forming wedge cavities 18 between grommet 16 right side and flap 11 to hold cross section is leg-of-mutton seal ring 19 and O RunddichtringO 20, O RunddichtringO 20 is positioned at the inner ring of seal ring 19, described grommet 16 is provided with pore 17 by valve pocket 2 and wedge cavities 18 conducting, when valve is in closed condition, the external annular surface of seal ring 19 is formed with the metal hard-sealing 21 of valve seat 9 and contacts, described flap 11 is provided with equalizing orifice 10 by media outlet 1b and piston cavity 7 conducting.
The full balance stop valve of above-mentioned ultrahigh pressure, rotating handwheel can make valve rod slide up and down action, then poppet shaft and flap is driven to make left and right sliding movement by first, second helical rack transmission, thus drive that flap carries out ending, throttling and regulating action, because structure is simple, there is double sealing structure, good seal performance, keying easy and flexible operation, so can be applicable on the high pressure valve of PN560bar very well.
Claims (2)
1. the full balance stop valve of ultrahigh pressure, comprise valve body, valve seat, flap, poppet shaft, spool axle bed and valve rod, valve body is provided with valve pocket, valve body left end is medium entrance, valve body right-hand member is media outlet, it is characterized in that: spool axle bed is fixedly installed on the middle valve body frame plate be provided with of valve pocket, poppet shaft makes left and right sliding movement in spool axle bed, the right-hand member spindle nose of poppet shaft is fixedly connected with described flap, described valve seat is fixed on valve body right-hand member, the surface of contact of flap and valve seat arranges metal hard-sealing respectively, described valve rod slides up and down action on valve body, valve rod and poppet shaft are mutually an angle of 90 degrees, upper end and the Stem Mut screw thread of valve rod spin, Stem Mut is fixedly connected with handwheel, the first helical rack of 45 degree of helical teeth is established in the lower end of valve rod, the second helical rack of 45 degree of helical teeth is established in the centre of described poppet shaft, first helical rack and the second helical rack engage each other transmission, when valve rod slides up and down action, first helical rack drives poppet shaft and flap to make left and right sliding movement by the second helical rack, the left end of described flap is connected with piston, piston is actively installed in the piston cavity that valve body frame plate has, described piston is provided with grommet near the cylindrical of flap, forming wedge cavities between grommet right side and flap to hold cross section is leg-of-mutton seal ring and O RunddichtringO, O RunddichtringO is positioned at the inner ring of seal ring, described grommet is provided with pore by valve pocket and wedge cavities conducting, and when valve is in closed condition, the external annular surface of seal ring is formed with the metal hard-sealing of valve seat and contacts.
2. the full balance stop valve of ultrahigh pressure as claimed in claim 1, is characterized in that: described flap is provided with equalizing orifice by media outlet and piston cavity conducting.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520218366.6U CN204553877U (en) | 2015-04-13 | 2015-04-13 | The full balance stop valve of ultrahigh pressure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520218366.6U CN204553877U (en) | 2015-04-13 | 2015-04-13 | The full balance stop valve of ultrahigh pressure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204553877U true CN204553877U (en) | 2015-08-12 |
Family
ID=53828989
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520218366.6U Expired - Fee Related CN204553877U (en) | 2015-04-13 | 2015-04-13 | The full balance stop valve of ultrahigh pressure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204553877U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110056687A (en) * | 2019-05-04 | 2019-07-26 | 梁根如 | A kind of bilateral adverse current resistance-shifting valve |
| CN114857281A (en) * | 2022-04-07 | 2022-08-05 | 浙江电泰阀业有限公司 | Bevel gear transmission light torque middle cavity non-pressure type adjusting type shaft flow valve |
-
2015
- 2015-04-13 CN CN201520218366.6U patent/CN204553877U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110056687A (en) * | 2019-05-04 | 2019-07-26 | 梁根如 | A kind of bilateral adverse current resistance-shifting valve |
| CN114857281A (en) * | 2022-04-07 | 2022-08-05 | 浙江电泰阀业有限公司 | Bevel gear transmission light torque middle cavity non-pressure type adjusting type shaft flow valve |
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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: 20150812 Termination date: 20180413 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |