CN2500871Y - Leakless gate valve - Google Patents
Leakless gate valve Download PDFInfo
- Publication number
- CN2500871Y CN2500871Y CN 01262417 CN01262417U CN2500871Y CN 2500871 Y CN2500871 Y CN 2500871Y CN 01262417 CN01262417 CN 01262417 CN 01262417 U CN01262417 U CN 01262417U CN 2500871 Y CN2500871 Y CN 2500871Y
- Authority
- CN
- China
- Prior art keywords
- valve
- sealing
- seal
- board
- plate
- 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 relates to an improved gate valve, comprising a valve body, a valve bar, and valve board. The upper and the lower parts of the valve board (6) are provided with via holes (9). The via hole is sealed by a seal element (8) fixed on a pressure plate (10), wherein, the pressure plate at one side of a medium inlet is provided with a cavity (7) which is communicated with the via hole (9). The valve bar (2) and the valve board (6) are connected by an upper seal board (3), the via hole of the upper seal board (3) center which is connected with the valve bar (2) is provided with a sea element (4), and the edge of the upper seal plate is opened with a concave groove which fixes the seal element (5). The gate valve is good in seal performance, and the medium pressure is larger, the seal effect is better.
Description
Technical field: the utility model relates to a kind of improved gate valve.
Background technique: common gate valve can only use in low-pressure medium pipeline system, and all there are a certain amount of leakage in its sealing surface and valve rod place in the use, therefore, has limited the use of this gate valve in poisonous, harmful gas, liquid medium conveyance conduit.
Summary of the invention:
Technical problem to be solved in the utility model is: overcome the leakage problem that existing gate valve exists, provide a kind of nothing of good seal performance to leak gate valve.
Its technological scheme is: a kind of nothing is leaked gate valve, comprise valve body, valve rod and valve plate, it is characterized in that: offer through hole on the upper and lower position of described valve plate, this openings wherein offers the cavity that communicates with above-mentioned through hole on the pressing plate of medium inlet one side by the fixing Sealing sealing of pressing plate; Valve plate is connected by upper sealing panel with valve rod, is provided with Sealing in the through hole of connection valve rod in the middle of this upper sealing panel, offers the groove of fixing seals on its outer rim.
Its technique effect: the utility model is owing to be pressed on the sealing surface of valve body both sides the elastomer seal that is installed on the valve plate by means of the pressure that is transferred medium, so under the gate valve closed condition, medium can not leak, and the pressure medium that is transferred is big more, sealing force is also big more, and sealing effect is also good more.When valve plate promotes, then utilize the upper sealing panel that connects on the valve rod that valve pocket top is sealed, make that medium is unlikely to be leaked from valve rod.
The drawing explanation:
Fig. 1 is the utility model structural representation.
Mode of execution:
As shown in Figure 1, offer through hole 9 on the upper and lower position of valve plate 6, this openings is sealed by pressing plate 10 fixing Sealings 8, and sealing part 8 is an elastomer seal.Wherein offer the cavity 7 that communicates with above-mentioned through hole 9 on the side of the pressing plate 10 at place, medium inlet, when valve in off position the time, medium can enter through hole 9 by this cavity 7, its pressure make shutoff in Sealing 8 low pressure at openings place on the sealing surface of valve body 1 upper and lower both sides, medium can not leaked; And pressure medium is big more, and its sealing force is big more, and sealing effect is also good more, and valve rod 2 is realized connecting by upper sealing panel 3 with valve plate 6.Be provided with Sealing 4 in the through hole of connection valve rod 2 in the middle of the upper sealing panel 3, offer groove on its outer rim, groove is embedded with Sealing 5.When poppet stem 2, valve rod 2 drives valve plate 8 and opens valve, utilizes upper sealing panel 3 to seal valve pocket top, and medium can not leaked from valve rod.
Claims (1)
1, a kind of nothing is leaked gate valve, comprise valve body, valve rod and valve plate, it is characterized in that: offer through hole (9) on the upper and lower position of described valve plate (6), this openings wherein offers the cavity (7) that communicates with above-mentioned through hole on the pressing plate (10) of medium inlet one side by fixing Sealing (8) sealing of pressing plate (10); Valve plate (6) is connected by upper sealing panel (3) with valve rod (2), is provided with the groove that offers fixing seals (5) on its outer rim of Sealing (4) in the through hole of connection valve rod (2) in the middle of this upper sealing panel (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01262417 CN2500871Y (en) | 2001-08-25 | 2001-08-25 | Leakless gate valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01262417 CN2500871Y (en) | 2001-08-25 | 2001-08-25 | Leakless gate valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2500871Y true CN2500871Y (en) | 2002-07-17 |
Family
ID=33670158
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 01262417 Expired - Fee Related CN2500871Y (en) | 2001-08-25 | 2001-08-25 | Leakless gate valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2500871Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110566681A (en) * | 2019-09-17 | 2019-12-13 | 太原科技大学 | ultrahigh pressure stop valve |
-
2001
- 2001-08-25 CN CN 01262417 patent/CN2500871Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110566681A (en) * | 2019-09-17 | 2019-12-13 | 太原科技大学 | ultrahigh pressure stop valve |
| CN110566681B (en) * | 2019-09-17 | 2022-02-25 | 太原科技大学 | Ultrahigh pressure stop valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |