CN202867913U - Valve seat structure of track ball valve - Google Patents
Valve seat structure of track ball valve Download PDFInfo
- Publication number
- CN202867913U CN202867913U CN 201220508718 CN201220508718U CN202867913U CN 202867913 U CN202867913 U CN 202867913U CN 201220508718 CN201220508718 CN 201220508718 CN 201220508718 U CN201220508718 U CN 201220508718U CN 202867913 U CN202867913 U CN 202867913U
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- China
- Prior art keywords
- valve seat
- valve
- face
- ladder
- valve base
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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.)
- Withdrawn - After Issue
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Abstract
The utility model provides a valve seat structure of a track ball valve. The valve seat of the track ball valve comprises the valve seat, wherein the valve seat comprises an upper valve seat and a lower valve seat, the contacting faces between the upper valve seat and the lower valve seat are ladder faces, a soft sealing ring is arranged between the ladder faces, close to inner sides, of the upper valve seat and the lower valve seat, and the soft sealing ring outwards protrudes out of the sealing faces of the upper valve seat and the lower valve seat. The ladder faces, close to the outer sides, of the upper valve seat and the lower valve seat are fixedly connected through threads, an axial contacting end face of the upper valve seat and the lower valve seat is a ladder face, and a soft graphite sealing ring is arranged between the lower end face of the axial contacting end face and a valve body, the high end face of the ladder face flushes with the end face of the lower valve seat, a compression gap is reserved between the high end face of the ladder face and the valve body, and a groove is formed in a radial contacting face of the upper valve seat and the valve body, an O-shaped ring is arranged in the groove, the upper valve seat is fixedly connected with the valve body through a pressing ring, and the position of the sealing face of the upper valve seat and the lower valve seat is made of surfacing hard alloy. Compound seal is adopted by the valve seat of the track ball valve, and the valve seat of the track ball valve is good in sealing performance and achieves zero leaking. A structure of fixing the valve seat by the pressing ring is adopted, and the valve seat of the track ball valve enables installation and maintenance to be convenient.
Description
Technical field
The utility model relates to a kind of valve seat, particularly relates to a kind of valve seat construction of class of track valve.
Background technique
Orbit ball valve is widely applied in the industries such as oil, chemical industry, electric power, as regulating and shut-off means.Mostly the valve seat of existing class of track valve is to be embedded on the valve body by interference fit, perhaps is welded on the valve body, quite loaded down with trivial details when sealing face damage need keep in repair, and wastes time and energy, and substantially is difficult to realize.And existing valve seat only adopts a kind of sealing means, i.e. the valve needs that seal steady in a long-term in the production technology can not be well satisfied in hard sealing or soft seal.
The model utility content
In order to overcome the above-mentioned shortcoming of existing orbit ball valve valve seat, the utility model provides a kind of orbit ball valve valve seat construction, and its good airproof performance is realized zero leakage, and installation, easy to maintenance.
The technological scheme that its technical problem that solves the utility model adopts is a kind of orbit ball valve valve seat construction, comprise valve seat, valve seat comprises upper valve base and lower valve base, on, surface of contact between the lower valve base is ladder surface, on, between the lower valve base ladder surface in the inner part soft seal ring is set, soft seal ring evagination is in upper, the lower valve base sealing surface, on, be fixedly connected with by screw thread between the lower valve base ladder surface in the outer part, upper valve base is ladder surface with the axial end face that contacts of valve body, be provided with flexible graphite sealing ring between ladder surface lower end face and the valve body, ladder surface eminence end face and lower valve base end face, and and leave the compression space between the valve body, and have groove on the radially surface of contact of upper valve base and valve body, O type circle is set in the groove, upper valve base is fixedly connected with valve body by trim ring, on, lower valve base sealing surface place pile-up welding hard alloy.
Cemented carbide is cobalt chromium tungsten cemented carbide.
The beneficial effects of the utility model are as follows:
1, valve seat is fixedly connected with valve body by trim ring, can realize the quick-replaceable of valve seat, and is easy to maintenance;
2, both inlay O type circle between upper valve base and the valve body, be provided with again Expanded graphite, realized double seal, guaranteed sealing good between valve seat and the valve body;
3, between the upper and lower valve seat ladder surface in the inner part soft seal ring is set, soft seal ring evagination is in upper and lower sealing surface of seat, upper and lower sealing surface of seat place pile-up welding hard alloy, said structure has namely formed compound sealing structure, primary seal is hard sealing, inferiorly be sealed into soft seal, realized zero leakage, and worst cold case be applicable equally.
Description of drawings
The utility model is described in further detail below in conjunction with drawings and Examples.
Fig. 1 is the plan view of the present embodiment, is sectional view;
Among Fig. 1: 1. sealing surface of seat; 2. trim ring; 3. soft seal ring; 4. upper valve base; 5. lower valve base; 6.O type circle; 7. flexible graphite sealing ring; 8. valve body; 9. compression space.
Embodiment
As shown in Figure 1, a kind of orbit ball valve valve seat construction, comprise valve seat, valve seat comprises upper valve base 4 and lower valve base 5, surface of contact between upper valve base 4 and the lower valve base 5 is ladder surface, on, soft seal ring 3 is set between the lower valve base ladder surface in the inner part, soft seal ring 3 evaginations are in upper, lower valve base sealing surface 1, on, be fixedly connected with by screw thread between the lower valve base ladder surface in the outer part, upper valve base 4 is ladder surface with the axial end face that contacts of valve body 8, be provided with flexible graphite sealing ring 7 between ladder surface lower end face and the valve body, ladder surface eminence end face and lower valve base 5 end face, and and leave between the valve body 8 and compress space 9, have groove on the radially surface of contact of upper valve base 4 and valve body 8, O type circle 6 is set in the groove, O type circle 6 has been realized double seal with flexible graphite sealing ring 7, improved sealability, upper valve base 4 is fixedly connected with valve body 8 by trim ring 2, can realize the quick-replaceable of valve seat, easy to maintenance, on, lower valve base sealing surface 1 place built-up welding cobalt chromium tungsten cemented carbide, wear resistance is good, formed compound seal, good seal performance with soft seal ring 3.
In the process of valve closing, sealing surface on the spheroid contacts with soft seal ring 3 in advance, rotation along with spheroid, soft seal ring 3 is compressed, the compression space 9 of leaving between valve seat and the valve body 8 is so that soft seal ring 3 has the space of enough compressions, being rotated further of spheroid, so that the ball seal face contacts with upper and lower sealing surface of seat 1, upper and lower sealing surface of seat 1 surface is welded with cobalt chromium tungsten cemented carbide, wear resistance is good, after sealing surface fitted like a glove, namely valve closing had been realized the zero leakage sealing.
Claims (2)
1. orbit ball valve valve seat construction, comprise valve seat, it is characterized in that: described valve seat comprises upper valve base and lower valve base, on, surface of contact between the lower valve base is ladder surface, on, between the lower valve base ladder surface in the inner part soft seal ring is set, described soft seal ring evagination is in upper, the lower valve base sealing surface, on, be fixedly connected with by screw thread between the lower valve base ladder surface in the outer part, described upper valve base is ladder surface with the axial end face that contacts of valve body, be provided with flexible graphite sealing ring between ladder surface lower end face and the valve body, ladder surface eminence end face and lower valve base end face, and and leave the compression space between the valve body, and have groove on the radially surface of contact of described upper valve base and valve body, O type circle is set in the groove, described upper valve base is fixedly connected with valve body by trim ring, described on, lower valve base sealing surface place pile-up welding hard alloy.
2. described a kind of orbit ball valve valve seat construction according to claim 1, it is characterized in that: described cemented carbide is cobalt chromium tungsten cemented carbide.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220508718 CN202867913U (en) | 2012-10-05 | 2012-10-05 | Valve seat structure of track ball valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220508718 CN202867913U (en) | 2012-10-05 | 2012-10-05 | Valve seat structure of track ball valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202867913U true CN202867913U (en) | 2013-04-10 |
Family
ID=48034634
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220508718 Withdrawn - After Issue CN202867913U (en) | 2012-10-05 | 2012-10-05 | Valve seat structure of track ball valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202867913U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103711935A (en) * | 2012-10-05 | 2014-04-09 | 上海神通企业发展有限公司 | Valve seat structure of track ball valve |
-
2012
- 2012-10-05 CN CN 201220508718 patent/CN202867913U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103711935A (en) * | 2012-10-05 | 2014-04-09 | 上海神通企业发展有限公司 | Valve seat structure of track ball valve |
| CN103711935B (en) * | 2012-10-05 | 2017-03-29 | 上海神通企业发展有限公司 | A kind of valve seat structure of track ball valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Jiangsu Shentong Valve Co., Ltd. Assignor: SHANGHAI SHENTONG ENTERPRISE DEVELOPMENT CO., LTD. Contract record no.: 2014320000054 Denomination of utility model: Valve seat structure of track ball valve Granted publication date: 20130410 License type: Exclusive License Record date: 20140219 |
|
| LICC | Enforcement, change and cancellation of record of contracts on the licence for exploitation of a patent or utility model | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20130410 Effective date of abandoning: 20170329 |