CN2795575Y - Buried plate gate valve - Google Patents
Buried plate gate valve Download PDFInfo
- Publication number
- CN2795575Y CN2795575Y CN 200520071585 CN200520071585U CN2795575Y CN 2795575 Y CN2795575 Y CN 2795575Y CN 200520071585 CN200520071585 CN 200520071585 CN 200520071585 U CN200520071585 U CN 200520071585U CN 2795575 Y CN2795575 Y CN 2795575Y
- Authority
- CN
- China
- Prior art keywords
- valve rod
- valve
- flashboard
- gate plate
- circular hole
- 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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- Sliding Valves (AREA)
Abstract
The utility model relates to a buried type flat plate gate valve which comprises a valve body, a valve seat, a gate plate, a valve rod, a valve cap, a sealing member and an installation member, wherein the gate plate and the valve rod are connected through a valve rod nut. The connection of the valve rod and the gate plate uses a cylindrical structure, and the valve rod nut uses a cylindrical structure which is inserted in a circular hole of the gate plate. The upper end surface of the gate plate is continuous and is not broken. The middle of the valve rod nut is provided with a radial circular hole, and treads which are matched and connected with outside threads are arranged in the circular hole. When the utility model is opened and closed, the stress of the gate plate is uniform, the stressed area is large, and the utility model is not easy to deform and break, and can prevent the gate plate and the valve rod from generating the separated phenomenon. The utility model has the advantages of reliable use, long service life, etc., and is suitable for gas of a switch device of urban gas pipelines and industrial gas pipe lines.
Description
Technical field
The utility model relates to a kind of valve, particularly about a kind of buried plate valve.The utility model is applicable to the burning line valve.
Background technique
Buried plate valve buries and is contained in below ground, and valve rod does not promote in switching process, but by the cooperating of threaded stem and flashboard attaching nut, and flashboard is risen or descends.The valve rod of classic flat-plate gate valve adopts the T type groove structure with being connected of flashboard, and its major defect is a discontinuity, and T type groove easy deformation, fracture break away from flashboard and valve rod, influence valve operational safety and working life.
Summary of the invention
The purpose of this utility model is the shortcoming that exists at prior art, and a kind of buried plate valve reliable, that the life-span is long that uses is provided.
The technological scheme that realizes the utility model purpose comprises valve body, valve seat, flashboard, valve rod, valve gap and Sealing and assembling set, be connected by Stem Mut between flashboard and the valve rod, mainly be that valve rod adopts cylindrical structural with being connected of flashboard, be that Stem Mut adopts cylindrical structural, be inserted in the circular hole of flashboard, the upper-end surface of flashboard disconnects continuously and not, is shaped on radially circular hole in the middle of the Stem Mut, and makes screw thread and the valve rod outside thread is connected in circular hole.
The utility model beneficial effect compared with prior art is to have adopted between flashboard and the valve rod cylindrical linkage structure, the upper-end surface of flashboard does not disconnect, make flashboard stressed evenly, lifting surface area is big, be difficult for producing distortion, fracture when stressed, can prevent the generation of flashboard and valve rod break-off, have and use advantages such as reliable, that the life-span is long.
Description of drawings
Fig. 1 is a structural representation of the present utility model.
Fig. 2 is connected local figure between valve rod and the flashboard among the utility model Fig. 1.
Fig. 3 is a valve rod leak-proof structure enlarged view among the utility model Fig. 1.
Embodiment
Now further describe the technical solution of the utility model in conjunction with the accompanying drawings and embodiments.
Buried plate valve as shown in Figure 1, comprise valve body 1, valve seat 2, flashboard 3, valve rod 5, valve gap 6 and Sealing and assembling set, be connected by Stem Mut 4 between flashboard 3 and the valve rod 5, Stem Mut 4 is a cylindrical structural, is inserted in the circular hole of flashboard 3, and the upper-end surface of flashboard 3 disconnects continuously and not, improve the intensity of flashboard 3, in the middle of Stem Mut 4, be shaped on radially circular hole, and in circular hole, make screw thread and valve rod 5 outside threads are connected, as shown in Figure 2.Stuffing box gland 7 is adopted in the sealing of valve rod 5, stuffing box gland 7 is that a columniform sealing ring 8 and O-ring seals 9 are formed, and O-ring seals 9 is distributed in the external diameter of valve rod 5 and the internal diameter of valve gap 6 Stuffing boxes, and the area of contact of valve rod 5 is reduced, reduce opening and closing moment, improve sealability.
Claims (2)
1, a kind of buried plate valve, comprise valve body (1), valve seat (2), flashboard (3), valve rod (5), valve gap (6) and Sealing and assembling set, be connected by Stem Mut (4) between flashboard (3) and the valve rod (5), it is characterized in that valve rod (5) and being connected of flashboard (3) adopting cylindrical structural, be that Stem Mut (4) is a cylindrical structural, be inserted in the circular hole of flashboard (3), the upper-end surface of flashboard (3) disconnects continuously and not, be shaped on radially circular hole in the middle of the Stem Mut (4), and in circular hole, make screw thread and valve rod (5) outside thread is connected.
2, buried plate valve according to claim 1, stuffing box gland (7) is adopted in the sealing that it is characterized in that valve rod (5), stuffing box gland (7) is that a columniform sealing ring (8) and O-ring seals (9) are formed, and O-ring seals (9) is distributed in the external diameter of valve rod (5) and the internal diameter of valve gap (6) Stuffing box.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520071585 CN2795575Y (en) | 2005-05-08 | 2005-05-08 | Buried plate gate valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520071585 CN2795575Y (en) | 2005-05-08 | 2005-05-08 | Buried plate gate valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2795575Y true CN2795575Y (en) | 2006-07-12 |
Family
ID=36813330
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520071585 Expired - Fee Related CN2795575Y (en) | 2005-05-08 | 2005-05-08 | Buried plate gate valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2795575Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102563105A (en) * | 2011-12-23 | 2012-07-11 | 上海诺特飞博燃烧设备有限公司 | Downward opening type flat gate valve |
| CN102913635A (en) * | 2012-11-01 | 2013-02-06 | 京东大型阀门有限公司 | Valve clack, valve core and opening-closing valve |
-
2005
- 2005-05-08 CN CN 200520071585 patent/CN2795575Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102563105A (en) * | 2011-12-23 | 2012-07-11 | 上海诺特飞博燃烧设备有限公司 | Downward opening type flat gate valve |
| CN102913635A (en) * | 2012-11-01 | 2013-02-06 | 京东大型阀门有限公司 | Valve clack, valve core and opening-closing valve |
| CN102913635B (en) * | 2012-11-01 | 2015-04-15 | 京东大型阀门有限公司 | Valve clack, valve core and opening-closing 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: 20060712 Termination date: 20100508 |