CN201628012U - Metal valve upper sealing structure - Google Patents
Metal valve upper sealing structure Download PDFInfo
- Publication number
- CN201628012U CN201628012U CN2009202960255U CN200920296025U CN201628012U CN 201628012 U CN201628012 U CN 201628012U CN 2009202960255 U CN2009202960255 U CN 2009202960255U CN 200920296025 U CN200920296025 U CN 200920296025U CN 201628012 U CN201628012 U CN 201628012U
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- CN
- China
- Prior art keywords
- seal
- seal ring
- section
- conical surface
- valve
- 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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Abstract
The utility model discloses a metal valve upper sealing structure, which consists of an upper sealing seat, a seal ring and a valve stem. The seal ring is an annular structure with a circular section and is disposed between the upper sealing seat and the valve stem, the upper sealing seat includes a mounting section and a sealing section, the sealing section is an inner conical face which together with the seal ring forms a first seal pair, and the end of the valve stem is provided with an outer-conical-faced shaft shoulder which together with the seal ring forms a second seal pair. The first seal pair and the second seal pair are both contact faces between a conical face and a spherical face, and thereby when the valve stem deviates from a center under force, the seal ring overcomes frictional resistance to freely travel and rotate so as to constantly keep tight contact with the inner conical face of the upper sealing seat to form sealing.
Description
Technical field
The utility model relates to the sealing of metal valve, relates in particular to sealing configuration on a kind of metal valve.
Background technique
Last sealing is when valve wide open, stops a kind of sealing configuration of medium to stuffing box place seepage.
The going up of all kinds of metal valves that is widely used in industrial pipeline at present seals, and all is the last sealing configuration of conventional fixed formula, during when the stressed Off center of valve rod or with the sealing seat disalignment, is difficult to guarantee sealing, thereby produces external leakage.
The model utility content
The utility model is at the deficiencies in the prior art, and the rotation of moving about of a kind of seal ring is provided, thus the problem that can effectively solve when the stressed Off center of valve rod or can't guarantee during with the sealing seat disalignment to seal, and sealing configuration on the metal valve simple in structure.
Above-mentioned purpose of the present utility model is achieved by following scheme:
Sealing configuration on a kind of metal valve, sealing configuration is made up of upper seal support, seal ring and valve rod on this, wherein:
Described seal ring is the circular ring of a cross section for circle, places between upper seal support and the valve rod;
Described upper seal support is divided into construction section and seal section two-part, and seal section is an internal conical surface, forms sealing pair with seal ring;
The described valve rod end band outer conical surface shaft shoulder, this outer conical surface shaft shoulder and seal ring form the second road sealing pair, the valve rod outer conical surface shaft shoulder holds up seal ring and moves up and down, and when stem movement during to last limit, seals thereby seal ring closely contact formation with the internal conical surface of upper seal support seal section.
Above-mentioned seal ring places between the internal conical surface and valve rod outer conical surface of upper seal support, because the cross section of seal ring is circular, so seal ring and two surface of contact of upper seal support and valve rod are a little and the contacting of face, thereby make the seal ring rotation of can moving about, during when the stressed Off center of valve rod or with the upper seal support disalignment, thereby seal ring has remained the tight contact of seal ring with the upper seal support internal conical surface by overcoming the surface friction drag rotation of freely moving about, and forms sealing.
In the sealing configuration, the construction section of upper seal support is provided with one section outside thread on the above-mentioned metal valve, is used for directly being connected with the valve gap internal thread.
In the sealing configuration, the bus of the bus of the internal conical surface of upper seal support seal section and the outer conical surface of valve rod is parallel to each other on the above-mentioned metal valve.
Compared with prior art, the utlity model has following beneficial effect:
Sealing configuration on the metal valve of the present utility model, seal ring is in surface of position contact between upper seal support internal conical surface and the valve rod outer conical surface, the cross section of seal ring is circular, therefore the contact of two sealing surfaces is contacting of conical surface and sphere, when the stressed Off center of valve rod, the seal ring rotation of moving about, thus when having overcome in the prior art, be difficult to guarantee the problem of sealing when the stressed Off center of valve rod or with the sealing seat disalignment.The utility model is simple in structure in addition, and sealing is reliable, can effectively solve the external leakage problem that seals on the metal valve.
Description of drawings
Fig. 1 is applied to the general illustration of gate valve for sealing configuration on the utility model;
Fig. 2 is the partial enlarged drawing of assembly 1 among Fig. 1;
Fig. 3 is the structural representation of upper seal support of the present utility model;
Fig. 4 is the structural representation of seal ring of the present utility model;
Fig. 5 is the left pseudosection of Fig. 4;
Fig. 6 is the structural representation of valve rod of the present utility model;
Wherein, 2 is upper seal support, and 4 is seal ring, and 3 is valve rod, and 5 is the construction section of upper seal support, and 6 is the seal section of upper seal support, and 7 is the shaft shoulder of valve rod end band outer conical surface.
Embodiment
Below in conjunction with specific embodiment the utility model is done description further, but specific embodiment is not done any qualification to the utility model.
The last sealing configuration of present embodiment, the installment state when it is applied to gate valve as shown in Figure 1, Fig. 2 provides the enlarged view of the last sealing configuration when being installed in gate valve, Fig. 3,4,5 and 6 provides the structural representation of upper seal support, seal ring and valve rod respectively.
From Fig. 1～6 as can be seen, the last sealing configuration of present embodiment is made up of upper seal support 2, seal ring 4 and valve rod 3, wherein:
The valve rod 3 end band outer conical surface shaft shoulders 7, this outer conical surface shaft shoulder and seal ring 4 form the second road sealing pair, the outer conical surface shaft shoulder 7 of valve rod 3 holds up seal ring 4 and moves up and down, when valve rod 3 moves to limit, thereby seal ring 4 closely contacts the formation sealing with the internal conical surface of upper seal support 2 seal sections 6.
During when valve rod 3 stressed Off center or with upper seal support 2 disalignments, thereby seal ring 4 has remained the tight contact of seal ring 4 with upper seal support 2 internal conical surfaces by overcoming the surface friction drag rotation of freely moving about, and forms sealing.
In the sealing configuration, the construction section 5 of upper seal support 2 is provided with one section outside thread on the metal valve of present embodiment, thereby can upper seal support 2 and valve gap be installed to together by being threaded.
Claims (3)
1. sealing configuration on the metal valve, sealing configuration is made up of upper seal support, seal ring and valve rod on this, wherein:
Described seal ring is the circular ring of a cross section for circle, places between upper seal support and the valve rod;
Described upper seal support is divided into construction section and seal section two-part, and seal section is an internal conical surface, forms the first road sealing pair with seal ring;
The described valve rod end band outer conical surface shaft shoulder, this outer conical surface shaft shoulder and seal ring form the second road sealing pair.
2. according to sealing configuration on the described metal valve of claim 1, it is characterized in that the construction section of described upper seal support is provided with one section outside thread that directly is connected with the valve gap internal thread.
3. according to sealing configuration on the described metal valve of claim 1, it is characterized in that the bus of outer conical surface of the bus of internal conical surface of described upper seal support seal section and valve rod is parallel to each other.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202960255U CN201628012U (en) | 2009-12-31 | 2009-12-31 | Metal valve upper sealing structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202960255U CN201628012U (en) | 2009-12-31 | 2009-12-31 | Metal valve upper sealing structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201628012U true CN201628012U (en) | 2010-11-10 |
Family
ID=43059405
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009202960255U Expired - Fee Related CN201628012U (en) | 2009-12-31 | 2009-12-31 | Metal valve upper sealing structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201628012U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103307297A (en) * | 2012-03-13 | 2013-09-18 | 韦特柯格雷公司 | Self aligning spherical backseat assembly for a valve |
| CN103482534A (en) * | 2013-09-13 | 2014-01-01 | 合肥力威汽车油泵有限公司 | Forklift inching valve |
-
2009
- 2009-12-31 CN CN2009202960255U patent/CN201628012U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103307297A (en) * | 2012-03-13 | 2013-09-18 | 韦特柯格雷公司 | Self aligning spherical backseat assembly for a valve |
| CN103482534A (en) * | 2013-09-13 | 2014-01-01 | 合肥力威汽车油泵有限公司 | Forklift inching valve |
| CN103482534B (en) * | 2013-09-13 | 2015-07-08 | 合肥力威汽车油泵有限公司 | Forklift inching valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20101110 Termination date: 20131231 |