CN213361288U - Sealed direction governing valve - Google Patents
Sealed direction governing valve Download PDFInfo
- Publication number
- CN213361288U CN213361288U CN202021629587.XU CN202021629587U CN213361288U CN 213361288 U CN213361288 U CN 213361288U CN 202021629587 U CN202021629587 U CN 202021629587U CN 213361288 U CN213361288 U CN 213361288U
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- Prior art keywords
- valve
- guide pipe
- seal
- packing
- sealing ring
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Abstract
The utility model discloses a sealed direction governing valve, a serial communication port, include: the upper end of the lower guide pipe is connected with the lower guide pipe bushing, the lower end of the lower guide pipe bushing is connected with the valve rod, the lower stopping gasket is arranged above the joint of the valve rod and the lower guide pipe bushing, a sealing ring structure is arranged on the lower stopping gasket and is a U-shaped elastic structure with an upward opening, the outer part of the sealing ring structure is fixed through a valve cover, and when a valve core at the lower end of the valve rod moves up and down, the sealing ring structure can prevent fine particles in a medium from entering filler. The utility model discloses can avoid impurity in the medium to get into after the valve rod motion and pack and lead to packing wearing and tearing to produce and leak, increase the life of governing valve.
Description
Technical Field
The utility model relates to a sealed technical field that adjusts, concretely relates to sealed direction governing valve.
Background
The regulating valve is applied to systems under severe working conditions, and mainly comprises industries such as coal chemical industry, thermal power plants, nuclear power plants, heat supply systems and other steam systems. The regulating valve in the prior art comprises a valve body component, an actuating mechanism, a positioner and the like.
The packing seal in the prior art regulating valve achieves the sealing effect by giving a larger axial pretension compression amount. The governing valve of prior art packs, owing to reach sealed effect through compressing tightly, valve rod and filler friction can appear in the use, and the valve rod can slowly wear and tear the filler, and the motion that can follow the valve rod of having impurity in the medium gets into the filler, leads to the filler wearing and tearing serious, can produce the leakage after long-time the use, causes the circumstances such as governing valve life-span shortening.
SUMMERY OF THE UTILITY MODEL
In order to overcome the above-mentioned defect of prior art, the utility model aims to provide a sealed direction governing valve.
In order to realize the utility model discloses an aim, the technical scheme who adopts is:
a seal pilot regulator valve comprising:
the upper end of the lower guide pipe is connected with the lower guide pipe bushing, the lower end of the lower guide pipe bushing is connected with the valve rod, the lower stopping gasket is arranged above the joint of the valve rod and the lower guide pipe bushing, a sealing ring structure is arranged on the lower stopping gasket and is a U-shaped elastic structure with an upward opening, the outer part of the sealing ring structure is fixed through a valve cover, and when a valve core at the lower end of the valve rod moves up and down, the sealing ring structure can prevent fine particles in a medium from entering filler.
In a preferred embodiment of the present invention, the valve cover is fixed on the valve body by the valve cover flange and the matched valve cover flange nut and the valve cover flange stud.
In a preferred embodiment of the present invention, a valve cover sealing gasket is disposed between the valve cover and the valve body.
In a preferred embodiment of the present invention, the lower end of the lower guide tube is sequentially provided with a valve cage and a valve seat, and the valve seat is fixed on the valve body through a valve seat sealing gasket.
In the utility model discloses a preferred embodiment, the inboard edge of valve gap the upper end of valve rod setting direction has set gradually first filler structure, filler spacer sleeve and second filler structure, the upper and lower end of first filler structure, filler spacer sleeve and second filler structure is provided with a plurality of top and bottom back-up pads.
In a preferred embodiment of the present invention, the upper end of the second packing structure is provided with an upper guide pipe and an upper guide pipe bushing.
The beneficial effects of the utility model reside in that:
the impurity in the medium is avoided entering the packing after the motion of valve rod and leads to packing wearing and tearing to produce and leak, increases the life of governing valve.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
Detailed Description
The structure and operation of the present invention will be further explained with reference to the accompanying drawings and the detailed description.
The sealing guide regulating valve shown in fig. 1 comprises a valve rod 22 installed in a cavity of a valve cover 7, a lower guide pipe 8 and a lower guide pipe bushing 8a are arranged on the outer side of the middle of the valve rod 22, a lower retaining gasket 9 is installed above the joint of the valve rod 22 and the lower guide pipe 8 and the lower guide pipe bushing 8a, a sealing ring structure 10 is arranged on the lower retaining gasket 9, the sealing ring structure 10 is a U-shaped elastic structure with an upward opening, the sealing ring structure 10 is fixed through the lower retaining gasket 9, the lower guide pipe 8 and the lower guide pipe bushing 8a, and the valve cover 7 is fixed on the valve body 1 through a valve cover flange 11 and a valve cover flange nut 13 and a valve cover flange stud 12 which are matched with the valve cover flange nut.
The lower end of the lower guide pipe 8 is sequentially provided with a valve cage 5 and a valve seat 3, and the valve seat 3 is fixed on the valve body 1 through a valve seat sealing gasket 2.
The upper end of the inner side of the valve cover 7 along the arrangement direction of the valve rod 22 is sequentially provided with a packing structure 15, a packing isolation sleeve 17 and a packing structure 19. An upper stopping gasket 14 is arranged at the lower end of the packing structure 15, and an upper stopping gasket 16 is arranged between the packing structure 15 and the packing isolation sleeve 17. An upper stopping gasket 18 is arranged between the packing isolation sleeve 17 and the packing structure 19, and an upper stopping gasket 20 is arranged at the upper end of the packing structure 19. The upper end of the upper retaining washer 20 is provided with an upper guide pipe 21 and an upper guide pipe bush 21 a.
The sealing ring structure 10 is arranged between the valve cover 7 and the lower retaining gasket 9 of the lower guide pipe 8, the inner diameter part of the sealing ring structure 10 is in contact sealing with the valve rod 22 of the valve core 4, and the outer diameter part of the sealing ring structure 10 is in contact sealing with the inner wall of the valve cover 7, so that the sealing effect of the sealing ring structure 10 is ensured.
Sealed direction governing valve is in the use, and the flow that sealed direction governing valve was controlled to the upper and lower regulation removal of case 4, when case 4 up moved, sealing washer structure 10 can be toward outer expansion, and the internal diameter of U type sealing washer structure 10 can closely cooperate with valve rod 22 external diameter, prevents in the middle of the subsidiary tiny medium granule of valve rod 22 gets into the packing structure in the epicoele to reach the requirement that reduces the filler wearing and tearing, the life of extension sealed direction governing valve.
Claims (6)
1. A seal pilot regulator valve, comprising:
the upper end of the lower guide pipe is connected with the lower guide pipe bushing, the lower end of the lower guide pipe bushing is connected with the valve rod, the lower stopping gasket is arranged above the joint of the valve rod and the lower guide pipe bushing, a sealing ring structure is arranged on the lower stopping gasket and is a U-shaped elastic structure with an upward opening, the outer part of the sealing ring structure is fixed through a valve cover, and when a valve core at the lower end of the valve rod moves up and down, the sealing ring structure can prevent fine particles in a medium from entering filler.
2. A seal guide adjustment valve as defined in claim 1 wherein said bonnet is secured to the valve body by a bonnet flange and mating bonnet flange nuts and bolts.
3. A seal-guided regulator valve according to claim 1 wherein a cap seal is disposed between the cap and the valve body.
4. The seal-guide regulating valve as claimed in claim 1, wherein the lower end of the lower guide tube is provided with a cage and a valve seat in sequence, and the valve seat is fixed on the valve body through a valve seat sealing gasket.
5. The seal guide regulating valve as claimed in claim 1, wherein a first packing structure, a packing isolation sleeve and a second packing structure are sequentially arranged at the upper end of the inner side of the valve cover along the arrangement direction of the valve rod, and a plurality of upper stop washers are arranged at the upper end and the lower end of the first packing structure, the packing isolation sleeve and the second packing structure.
6. The seal-guide damper valve according to claim 5, wherein the second packing structure is provided at an upper end thereof with an upper guide pipe and an upper guide pipe bushing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021629587.XU CN213361288U (en) | 2020-08-07 | 2020-08-07 | Sealed direction governing valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021629587.XU CN213361288U (en) | 2020-08-07 | 2020-08-07 | Sealed direction governing valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213361288U true CN213361288U (en) | 2021-06-04 |
Family
ID=76143515
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021629587.XU Active CN213361288U (en) | 2020-08-07 | 2020-08-07 | Sealed direction governing valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213361288U (en) |
-
2020
- 2020-08-07 CN CN202021629587.XU patent/CN213361288U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |