CN201973252U - Butterfly valve of large diameter soft valve seat center plate - Google Patents
Butterfly valve of large diameter soft valve seat center plate Download PDFInfo
- Publication number
- CN201973252U CN201973252U CN2011201083874U CN201120108387U CN201973252U CN 201973252 U CN201973252 U CN 201973252U CN 2011201083874 U CN2011201083874 U CN 2011201083874U CN 201120108387 U CN201120108387 U CN 201120108387U CN 201973252 U CN201973252 U CN 201973252U
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- China
- Prior art keywords
- valve
- valve seat
- groove
- soft
- metal insert
- 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 butterfly valve of a large diameter soft valve seat center plate. The butterfly valve comprises a valve body, a rubber soft valve seat and upper and lower valve shafts, wherein at least one plow groove is arranged at the joint of the valve body and the rubber soft vale seat and adjacent to a shaft hole; a boss matched with the plow groove is arranged on the rubber soft valve seat corresponding to the plow groove and embedded in the plow groove; a metal insert is embedded in the shaft hole on the soft valve seat, and the inner diameter of the metal insert is identical with the outer diameter of the valve shaft; an extended part extending in the axial direction of one end of the metal insert adjacent to the valve body is embedded in the groove formed on the valve body; and at least one ring groove is formed on the inner diameter of the metal insert, and an O-shaped seal ring is arranged in the ring groove. The structure can ensure the seal specific pressure between the valve plate seal excircle and the soft valve seat, and can prevent the relative movement thereof. Furthermore, the metal insert and the O-shaped seal ring can effectively solve the leakage problem of the shaft hole of the valve.
Description
Technical field
The utility model relates to valve technology field, particularly relates to the soft valve seat center plate of a kind of heavy caliber butterfly valve.
Background technique
Heavy caliber center plate butterfly valve is long series at present, and its structure is longer, and rubber valve seat is directly vulcanized on valve body, and the valve seat that this conventional construction can not satisfy in on-the-spot the use is changed; The axis hole leakage problems in use often appears in another removable soft valve seat construction butterfly valve.
Summary of the invention
The utility model provides a kind of bigbore soft seat center plate of axis hole seepage butterfly valve of avoiding for solving the technical problem that exists in the known technology.
For this reason, technical solution adopted in the utility model is:
The soft valve seat center plate of a kind of heavy caliber butterfly valve, comprise valve body, the soft valve seat of rubber and upper and lower valve shaft, the described lower valve shaft of going up is installed in the axis hole of valve body, in described valve body and the soft valve seat of rubber joint, be provided with a groove at least near the position of axis hole, the soft valve seat of the rubber of respective grooves position is provided with the boss that is complementary with this groove, and this boss embeds and is installed in the described groove.
Preferably, be inlaid with a metal insert in the axis hole of described soft valve seat, the internal diameter of this metal insert is identical with the external diameter of valve shaft, metal insert extends to form extension part vertically near an end of valve body, this extension part embeds and is installed in the groove that forms on the valve body, on the internal diameter of described metal insert, be formed with at least one circular groove, in this circular groove, be provided with O-ring seals.
Because valve block internal diameter of the present utility model and the soft valve seat of rubber joint are provided with a groove at least, the respective grooves position soft valve seat of rubber is provided with the boss with the groove coupling, soft valve seat boss is inserted in the groove, valve plate sealing cylindrical of one of valve sealing element and the seal pressure between the soft valve seat can be guaranteed, relatively moving between soft valve seat and the valve block internal diameter can be avoided simultaneously.In addition, on soft valve seat, be bumped into a metal insert in the lower shaft hole respectively, this metal insert axially leans out the valve body axis hole of partly packing into, and is provided with O-ring seals in metal insert, can effectively solve the axis hole leakage problems that often occurs when frequently opening and closing under the valve artesian condition.
Description of drawings
Fig. 1 is the cross-sectional view of center plate butterfly valve of the present utility model;
Fig. 2 is the structure enlarged view at the axis hole sealing configuration I place among Fig. 1;
Fig. 3 is the structure enlarged view of II place valve seat metal insert among Fig. 1.
Embodiment
Be elaborated below in conjunction with the structure of accompanying drawing to center plate butterfly valve of the present utility model.
As Fig. 1～shown in Figure 3, the soft valve seat center plate of this heavy caliber butterfly valve comprises valve body 10, the soft valve seat 11 of rubber, valve plate 12 and goes up lower valve shaft 14 and 15, axle sleeve 16, taper pin 17 and bottom cover 19.Upper and lower valve shaft 14,15 passes valve body and the valve seat axis hole is encased in the valve plate axis hole, taper pin 17 is fixed together upper and lower valve shaft (valve shaft also can be connected with key or six sides with valve plate) with valve plate 12, be provided with anti-wear gasket (not identifying among the figure) at the shoulder place of lower valve shaft 15, on bottom cover 19, be set with O type circle (not shown), bottom cover 19 is packed in the lower shaft hole of valve body 10, is fixed on the valve body by bolt.
In addition, be provided with a groove 20 in the joint of valve body 10 and the soft valve seat 11 of rubber, the position of close axis hole, the soft valve seat 11 of the rubber of respective grooves 20 positions is provided with the boss 21 that is complementary with groove 20, and boss 21 embeds and is installed in the groove 20.Certainly, groove 20 also can be provided with more than 1 as required.
In the axis hole of the soft valve seat 11 of rubber, be inlaid with a metal insert 13, the internal diameter of this metal insert 13 is identical with the external diameter of valve shaft, metal insert 13 extends to form extension part 22 vertically near an end of valve body, and extension part 22 embeds and is installed in the groove 23 that forms on the valve body.In addition, on the internal diameter of metal insert 13, be formed with 2 circular groove (not shown), in circular groove, be provided with O-ring seals 24.Metal insert 13 sulfurations are on the soft valve seat 11 of rubber.When valve seat was installed, elder generation aimed at the valve body axis hole with metal insert and pushes it in the valve body axis hole, then valve seat is sleeved on the valve body.In the process of the axis hole on valve seat that valve shaft is packed into, O-ring seals 24 snaps in the circular groove on the metal insert 13, plays seal action between metal insert and valve shaft.
Adopt above critical piece to be assembled into soft valve seat butterfly valve, make valve body groove and soft rubber valve seat boss to closely cooperate, thereby can overcome the soft valve seat vibration that the high-velocity fluid medium produces and move.The metal insert of the axis hole end of upper and lower two soft valve seats and be installed in metal insert and valve shaft between O-ring seals can guarantee axial seal between valve shaft and the soft valve seat, avoided spindle nose seepage and because " playing drum ", " explosion " phenomenon that the soft valve seat of spindle nose seepage may occur.
Claims (2)
1. the soft valve seat center plate of heavy caliber butterfly valve, comprise valve body, the soft valve seat of rubber and upper and lower valve shaft, the described lower valve shaft of going up is installed in the axis hole of valve body, it is characterized in that: in described valve body and the soft valve seat of rubber joint, be provided with a groove at least near the position of axis hole, the soft valve seat of the rubber of respective grooves position is provided with the boss that is complementary with this groove, and this boss embeds and is installed in the described groove.
2. the soft valve seat center plate of heavy caliber according to claim 1 butterfly valve, it is characterized in that: be inlaid with a metal insert in the axis hole of described soft valve seat, the internal diameter of this metal insert is suitable with the external diameter of valve shaft, metal insert extends to form extension part vertically near an end of valve body, this extension part embeds and is installed in the groove that forms on the valve body, on the internal diameter of described metal insert, be formed with at least one circular groove, in this circular groove, be provided with O-ring seals.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201083874U CN201973252U (en) | 2011-04-13 | 2011-04-13 | Butterfly valve of large diameter soft valve seat center plate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201083874U CN201973252U (en) | 2011-04-13 | 2011-04-13 | Butterfly valve of large diameter soft valve seat center plate |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201973252U true CN201973252U (en) | 2011-09-14 |
Family
ID=44578355
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011201083874U Expired - Fee Related CN201973252U (en) | 2011-04-13 | 2011-04-13 | Butterfly valve of large diameter soft valve seat center plate |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201973252U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113074260A (en) * | 2021-03-23 | 2021-07-06 | 无锡美瑞克阀门制造有限公司 | Novel butterfly valve disk seat of high-efficient sealing |
-
2011
- 2011-04-13 CN CN2011201083874U patent/CN201973252U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113074260A (en) * | 2021-03-23 | 2021-07-06 | 无锡美瑞克阀门制造有限公司 | Novel butterfly valve disk seat of high-efficient sealing |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110914 Termination date: 20170413 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |