CN206874851U - Soft seal flanged gate valve - Google Patents
Soft seal flanged gate valve Download PDFInfo
- Publication number
- CN206874851U CN206874851U CN201720485973.8U CN201720485973U CN206874851U CN 206874851 U CN206874851 U CN 206874851U CN 201720485973 U CN201720485973 U CN 201720485973U CN 206874851 U CN206874851 U CN 206874851U
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- valve
- soft seal
- flange
- ring
- valve rod
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Abstract
Soft seal flanged gate valve, including valve body, it is fixed in the bonnet of valve body upper surface, flashboard in valve body, the valve rod of flashboard upper end is bolted in, the handwheel being fixed on valve rod, valve body is provided with entrance point and the port of export, entrance point and the port of export are connected to a loose flange, loose flange includes a flange body, the soft seal pad being nested on flange body, the O-ring one being embedded in flange body, soft seal pad is conical gasket, and the soft seal pad conical surface is mutually locked with flange body；The thrust bearing of valve rod overcoat one, thrust bearing are cased with bearing holder (housing, cover) outside, and O-ring two is provided with thrust bearing and forms sealing with valve rod, going back inlay card on valve rod has O-ring three and O-ring four.Removable flange trim lengths, taper soft seal pad sealing compensation, ensure the sealing of flange and valve caliber, reduce installation place leak source and installing space.Thrust bearing and built-in valve rod, band press operation is realized, avoid being influenceed normal water supply by high pressure impulsion leakage and not cut-off situation exchange sealing ring.
Description
Technical field
A kind of gate valve is the utility model is related to, particularly a kind of anti-leakage structure of soft seal flanged gate valve.
Background technology
Flanged gate valve is the gate valve that connected mode is flange, and flanged gate valve is reliable and stable when being used in heavy caliber pipeline,
So flanged gate valve is generally selected on big-flow high-pressure pipeline.At present, when manufacturing flanged gate valve by valve body and its both ends
Flange is cast integrally, at the scene connecting pipe install when, length of pipe can not size regulation, installation difficulty is big, be difficult to realize
It is connected with pipeline ne-leakage.Have it is a kind of be arranged on using telescopic flange device on pipeline, using expansion bend length adjustment compensation with
The sealing of pipeline, installation is inconvenient, also increases seepage node indirectly, can not eliminate safe hidden trouble.It is fixed flange lock again
Valve uses fitted outside stem structure, and valve rod O-ring rubber parts is consumable accessory and part easy to aging, and valve is in use at valve rod
Occur leaking or stuck, need to stop pipeline supply can just being repaired, if dismounting maintenance, direct shadow in water supply pipline system
Ring the water supply problem of huge numbers of families.
The content of the invention
The utility model easily produces leakage problems for the flange body and valve rod of current flanged gate valve, and design is a kind of soft close
The flange of envelope and the multi-layer sealing structure of valve rod, reach and do not interrupt circulation in maintenance, usually non-leakage flanged gate valve.
Technical scheme is used by the utility model：Soft seal flanged gate valve, including valve body, it is fixed in valve body upper surface
Bonnet, the flashboard in valve body is bolted in the valve rod of the flashboard upper end, and the handwheel being fixed on the valve rod is described
Valve body is provided with entrance point and the port of export, it is characterised in that：The entrance point and the port of export are connected to a loose flange, described
Loose flange includes a flange body, the soft seal pad being nested on the flange body, the O-ring being embedded in the flange body
One, the soft seal pad is conical gasket, and the soft seal pad conical surface is mutually locked with the flange body；The valve rod overcoat one
Thrust bearing, the thrust bearing are cased with bearing holder (housing, cover), formed in the thrust bearing provided with O-ring two with the valve rod close outside
Seal, going back inlay card on the valve rod has O-ring three and O-ring four.
A pressing plate is additionally provided with the bonnet, is provided with a split annulus inside the pressing plate, the split annulus is fastened in
The stem exterior.
Rabbet steel wire clamping ring outside the split annulus.
The pressing plate lower surface is provided with a groove, and O-ring five is cased with the groove.
The bonnet is affixed by bolt one and the valve body upper end, and the pressing plate passes through bolt two and the bonnet upper end
It is affixed.
Length fine setting is carried out using removable flange, sealing compensation is padded by taper soft seal, ensures flange and valved tube
The sealing in footpath, avoid fixed flanged gate valve connect caused by gap and influence sealing, instead of flange expansion bend frame mode,
Reduce telescopic flange device and the leak source of junction is installed, reduce installing space, it is easy for installation.Using thrust bearing and split annulus
Be arranged on O-ring on valve rod, it is interior inside the bonnet, realize that band press operation changes twice O-ring on valve rod, avoid valve rod by
High pressure is got excited and liquid leakage.Using built-in type stem structure, pressing plate can be dismantled in the case of having pressure and not cut-off, changes valve
Bar O-ring and pressing plate O-ring, avoid influenceing regular supply because of maintenance.
Brief description of the drawings
Fig. 1 is the utility model longitudinal section.
Fig. 2 is Fig. 1 A direction views.
Fig. 3 is enlarged drawing at I in Fig. 1.
Fig. 4 is enlarged drawing at II in Fig. 3.
Fig. 5 is that sectional view is padded in soft seal.
Embodiment
The structure of the utility model embodiment is described in further detail below in conjunction with accompanying drawing.
Referring to shown in Fig. 1 and Fig. 5, soft seal flanged gate valve, including valve body 1, the valve body 1 is fixed in by bolt 1
The bonnet 2 of upper surface, the flashboard 3 in the valve body 1, the valve rod 4 of the upper end of flashboard 3 is bolted in, is fixed in the valve
Handwheel 5 on bar 4, the valve body 1 are provided with entrance point 6 and the port of export 7, and the entrance point 6 and the port of export 7 are connected to a pine
Flange 8 is covered, the loose flange 8 includes a flange body 81, the soft seal pad 82 being nested on the flange body 81, is embedded in
O-ring 1 in the flange body 81, the soft seal pad 82 are cone rubber sealing gasket, and taper is α≤5 °, described soft close
The conical surface of packing 82 is locked with the phase of flange body 81, may move loose flange and carries out length dimension regulation compensation, conical gasket
81 guarantee flange bodies 81 are sufficiently sealed with caliber.The valve body import end 6 and the external diameter of the port of export 7 are slightly larger than valve body interlude,
Increase wall thickness and improve valve body tensile strength.
Referring to shown in Fig. 1 and Fig. 3 ~ 4, the thrust bearing 41 of 4 overcoat of valve rod one, the thrust bearing 41 is cased with bearing outside
Set 42, O-ring 2 43 is provided with the thrust bearing 41 is formed with the valve rod 4 and seal, and prevent valve rod 4 by high pressure impulsion and
Liquid leakage.Inlay card O-ring 3 44 and O-ring 4 45 are gone back on the valve rod 4 to increase sealing.
Referring to shown in Fig. 1 ~ 4, being additionally provided with a pressing plate 21 on the bonnet 2, the pressing plate 21 by bolt 2 22 with it is described
Bonnet upper end is affixed.The inside of pressing plate 21 is provided with a split annulus 23, and the split annulus 23 is fastened in outside the valve rod 4
Portion.The valve rod 4 is positioned by the split annulus 23 with the pressing plate 21 and bonnet 2, and valve rod 4 can not be consolidated stroke up and down
It is fixed.The clamping steel wire clamping ring 24 of split annulus 23, the snap ring 24 are connected in the groove on the outer wall of split annulus 23,
The lower surface of pressing plate 21 is provided with a groove 25, and an O-ring 5 26 is cased with the groove 25, realizes band press operation, changes valve
During the sealing ring 26 of the sealing ring 44,45 of bar 4 and pressing plate 21, supply is avoided to cut off.
Claims (5)
1. soft seal flanged gate valve, including valve body, being fixed in the bonnet of valve body upper surface, the flashboard in valve body, it is bolted in
The valve rod of the flashboard upper end, the handwheel being fixed on the valve rod, the valve body are provided with entrance point and the port of export, and its feature exists
In：The entrance point and the port of export are connected to a loose flange, and the loose flange includes a flange body, are nested in described
Soft seal pad on flange body, the O-ring one being embedded in the flange body, the soft seal pad is conical gasket, described
The soft seal pad conical surface is mutually locked with the flange body；The thrust bearing of valve rod overcoat one, the thrust bearing are cased with bearing outside
Set, O-ring two is provided with the thrust bearing is formed with the valve rod and seal, and inlay card is gone back on the valve rod O-ring three and O-shaped
Circle four.
2. soft seal flanged gate valve according to claim 1, it is characterized in that the bonnet（2）On be additionally provided with a pressing plate
（21）, the pressing plate（21）Inside is provided with a split annulus（23）, the split annulus（23）It is fastened in the valve rod（4）Outside
Portion.
3. soft seal flanged gate valve according to claim 2, it is characterized in that the pressing plate（21）Lower surface is provided with a groove
（25）, the groove（25）On be cased with O-ring five（26）.
4. soft seal flanged gate valve according to claim 2, it is characterized in that the split annulus（23）Outer interlocking steel wire card
Ring（24）.
5. the soft seal flanged gate valve according to Claims 2 or 3, it is characterized in that the bonnet（2）Pass through bolt one（11）
With the valve body（1）Upper end is affixed, the pressing plate（21）Pass through bolt two（22）With the bonnet（2）Upper end is affixed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720485973.8U CN206874851U (en) | 2017-05-04 | 2017-05-04 | Soft seal flanged gate valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720485973.8U CN206874851U (en) | 2017-05-04 | 2017-05-04 | Soft seal flanged gate valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206874851U true CN206874851U (en) | 2018-01-12 |
Family
ID=61339399
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720485973.8U Active CN206874851U (en) | 2017-05-04 | 2017-05-04 | Soft seal flanged gate valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206874851U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109339138A (en) * | 2018-09-29 | 2019-02-15 | 天津包博特密封科技有限公司 | A kind of impact-resistant dredger hopper flashboard |
-
2017
- 2017-05-04 CN CN201720485973.8U patent/CN206874851U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109339138A (en) * | 2018-09-29 | 2019-02-15 | 天津包博特密封科技有限公司 | A kind of impact-resistant dredger hopper flashboard |
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