CN203051822U - Lip-sealing single-piston double-blocking double-drainage valve seat - Google Patents
Lip-sealing single-piston double-blocking double-drainage valve seat Download PDFInfo
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- CN203051822U CN203051822U CN 201220747742 CN201220747742U CN203051822U CN 203051822 U CN203051822 U CN 203051822U CN 201220747742 CN201220747742 CN 201220747742 CN 201220747742 U CN201220747742 U CN 201220747742U CN 203051822 U CN203051822 U CN 203051822U
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- ring
- valve seat
- sealing
- lip
- lip seal
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Abstract
The utility model provides a lip-sealing single-piston double-blocking double-drainage valve seat which comprises a valve seat spring, a valve seat sealing ring, a valve seat bearing ring, a ball body, a valve body, a screw, a lip-sealing press ring, a lip-sealing bearing ring, a lip-sealing elastic ring, a lip-sealing ring and a cracking back press ring. The valve seat spring is arranged between the valve seat bearing ring and a bearing plane of the valve body, the valve seat sealing ring is extruded and embedded into the valve seat bearing ring, the lip-sealing ring is assembled in a sealing groove formed between the valve seat bearing ring and the valve body, the lip-sealing press ring is fixed on the valve seat bearing ring through the screw, the lip-sealing elastic ring is arranged in the lip-sealing ring, and the cracking back press ring is arranged at the back of the lip-sealing ring. The lip-sealing single-piston double-blocking double-drainage valve seat can guarantee that a valve can flexibly float in a preset space without block in various acidic, neutral or alkaline media at high pressure and high temperature. The valve seat and the valve can be effectively sealed. The service life of a sealing part is prolonged.
Description
Technical field
The utility model relates to the sealing configuration that the ball valve product adopts between floating seal valve seat and valve body, be specifically related to the two emission type valve seats of the two blocking-up of the single piston of a kind of lip seal.
Background technique
At present, fixing ball valve all need adopt floating valve seat to realize the sealing of valve and the requirement of valve body lumen safety relief both at home and abroad; It is that valve seat need be in specific cavity space can effectively seal between valve seat and the valve body that valve seat is required, and can float flexibly again reaches effective sealing to satisfy between valve seat and the valve closing member spheroid.For example, publication number CN201535367U patent documentation discloses a kind of arc-straight line dual-path sealed ball valve base, specifically form the sealing seat of sealing pair for ball valve and spheroid, guarantee the sealing when ball valve in off position, belong to the mechanical structure technical field.Feature is: described valve seat comprises circular arc seal section and line seal section, and circular arc seal section and line seal are intersegmental to be provided with small cylindrical tank separately, and described circular arc seal section is the lip elastic structure.
In addition, the patent documentation of publication number CN201507685U discloses rubber triangle circle soft seal valve seat fixing ball valve, and rubber triangle circle soft seal valve seat fixing ball valve comprises adorns left and right valve seat respectively between valve body, spheroid, valve gap, valve body and spheroid; Be provided with in each valve seat: valve base sealing O type circle, loaded spring and bearing ring; It is characterized in that: it is the rubber triangle circle of isosceles right triangle that valve base sealing adopts sectional shape, and the isosceles right triangle riding position is that the place, right angle is as the sealing anchor ring near spheroid.
But, in described prior art, sealing means between floating valve seat and valve body adopts O shape rubber seal or two kinds of structures of graphite packing seal ring mostly, adopt O type rubber seal to be subjected to the restriction of rubber material, have influence on the restriction that the whole Applicable temperature of valve and Applicable media all are subjected to O type rubber seal; The structure that adopts the graphite packing seal ring then is that the very large pretension specific pressure of graphite packing seal ring needs could satisfy the seal request between valve seat and valve body, and the pretension specific pressure that increases the graphite packing seal ring will cause floating valve seat dumb, also stuck easily, and causes valve seat and valve closing member seal failure.
The model utility content
At above the deficiencies in the prior art, the utility model patent provides two kinds of lip seal valve seats, to satisfy the demands.
To achieve these goals, the technological scheme taked of the utility model adopts novel lip seal configuration as the sealing configuration between valve seat and the valve body.
The utility model is the two emission type valve seats of the two blocking-up of the single piston of a kind of lip seal, described valve seat comprises seating spring, valve seat insert, valve seat bearing ring, spheroid, valve body, screw, lip seal pressure ring, lip seal bearing ring, lip seal elastic ring, lip seal ring and cracking formula back pressure ring, wherein, seating spring is arranged between the supporting plane of valve seat bearing ring and valve body, and can be built in valve body or the valve seat orifice, offer the necessary thrust of the pre-tightening seal of sealing surface of seat; The valve seat insert extruding is mounted in the valve seat bearing ring, is used for the sealing between valve seat and the spheroid; The lip seal ring is assemblied between valve seat bearing ring and the valve body and forms in the seal groove, plays the one-way sealing effect between valve seat and the valve body; The lip seal pressure ring is fixed on the valve seat bearing ring by screw, it is spacing to be used for moving axially of lip seal ring, the lip seal elastic ring is installed in the lip seal ring, two seal lips to the lip seal ring apply the necessary pretightening force of pre-tightening seal, the lip seal bearing ring is installed in lip seal elastic ring inside, and the lip seal elastic ring is played a supportive role; Cracking formula back pressure ring is installed in the back of lip seal ring, when high pressure sealing the auxiliary seal effect is played in lip seal.
Be preferably, be provided with the fire proof seal circle in the periphery of valve seat bearing ring, so that whole valve seat piston ring is played the fire proof seal effect; Be respectively arranged with the seal gease injecting structure at valve seat bearing ring and valve body, to inject seal grease as seal action.
Be preferably, cracking formula back pressure ring is made up of two split rings with identical cone angle, when high pressure sealing the auxiliary seal effect is played in lip seal.
The material of the above parts is chosen according to the concrete working medium of valve and surrounding enviroment.
The beneficial effects of the utility model are, valve seat described in the utility model can guarantee that valve is in all kinds of acidity, neutrality or alkaline medium, in the time of pressure 0～45Mpa, temperature-196～425 ℃, in specific space, can float, not have jam flexibly, can reach effective sealing between described valve seat and valve body, all can satisfy requirement projected life of valve the working life of Sealing.
Description of drawings
Fig. 1 is the structural representation of the two emission type valve seats of the two blocking-up of single piston of the utility model one embodiment.
Fig. 2 is the working principle schematic representation of the two emission type valve seats of the two blocking-up of single piston of the utility model one embodiment.
Among the figure: 1-seating spring, 2-valve seat insert, 3-valve seat bearing ring, the 4-spheroid, the 5-valve body, 6-screw, 7-lip seal pressure ring, 8-lip seal bearing ring, 9-lip seal elastic ring, 10-lip seal ring, 11-cracking formula back pressure ring, 12-fire proof seal circle, 13-seal gease injecting structure.
Embodiment
Below, 1-2 and embodiment by reference to the accompanying drawings, the utility model is described in further detail.
As shown in Figure 1, the utility model one embodiment is the two emission type valve seats of the two blocking-up of the single piston of a kind of described lip seal, and described valve seat comprises: seating spring 1, valve seat insert 2, valve seat bearing ring 3, spheroid 4, valve body 5, screw 6, lip seal pressure ring 7, lip seal bearing ring 8, lip seal elastic ring 9, lip seal ring 10, cracking formula back pressure ring 11, fire proof seal circle 12, seal gease injecting structure 13.Wherein, seating spring 1 is arranged between the supporting plane of valve seat bearing ring 3 and valve body 5, can be built in valve body 5 or the valve seat orifice, offers the necessary thrust of the pre-tightening seal of sealing surface of described valve seat; Valve seat insert 2 extruding are mounted in the valve seat bearing ring 3, are used for the sealing between described valve seat and the spheroid 5; Lip seal ring 10 is assemblied between valve seat bearing ring 8 and the valve body 5 in the formed seal groove, plays the one-way sealing effect between described valve seat and the valve body 5; Lip seal pressure ring 7 is fixed on the valve seat bearing ring 3 by screw 6, be used for spacing to moving axially of lip seal ring 10, lip seal elastic ring 9 is installed in the lip seal ring 10, two seal lips to lip seal ring 10 apply the necessary pretightening force of pre-tightening seal, lip seal bearing ring 8 is installed in the inside of lip seal elastic ring 9, and lip seal elastic ring 9 is played a supportive role; Cracking formula back pressure ring 11 is installed in the back of lip seal ring 10, is made up of two split rings with identical cone angle, when high pressure sealing the auxiliary seal effect is played in lip seal.
Fire proof seal circle 12 is arranged on the periphery of valve seat bearing ring 3, and whole valve seat piston ring is played the fire proof seal effect; Seal gease injecting structure 13 is separately positioned on valve seat bearing ring 3 and the valve body 5, to inject seal grease as seal action.
The material of the above parts is chosen according to the concrete working medium of valve and surrounding enviroment.
As shown in Figure 2, when valve is in the complete shut-down position, upstream pressure is that the lumen pressure difference of the manifold pressure of entrance of valve body 5 and valve body 5 is when low, it is whole mobile that the seating spring 1 of upstream extremity promotes described valve seat, valve seat insert 2 is contacted with spheroid 4, and simultaneously, lip seal ring 10 is under the pretightening force effect of lip seal bearing ring 8 and lip seal elastic ring 9, two sealing lips of lip seal ring 10 are contacted with valve body 5 with valve seat bearing ring 3 respectively, realized the preceding initial sealing of valve body.Along with the pressure difference of upstream pressure and valve body lumen progressively increases, make that pressure medium further makes two sealing lips be adjacent to the surface of valve seat bearing ring 3 and valve body 5 in lip seal ring 10 chambeies, form bigger seal pressure, make the sealing lip of lip seal ring 10 form better effective seal, with pressure medium and variation of temperature, the cracking formula back pressure ring 11 that is arranged at lip seal ring 10 backs is compensated sealing; Simultaneously as shown in Figure 2, act on the difference in areas A of the area N that area M on the lip seal ring 10 and valve seat insert 2 act on sphere at pressure medium, under pressure medium, form described valve seat to the thrust of spheroid 4, push described valve seat to spheroid, make valve seat insert 2 also be adjacent to spheroid 4, form bigger seal pressure, more effective with the sealing that guarantees 3 of described valve seat and spheroids.
When the lumen pressure anomaly of valve body 5 raises, the middle cavity pressure of valve body 5 is to the extruding force of 10 liang of sealing lips of lip seal ring during greater than the pretightening force of 10 liang of sealing lips of 9 pairs of lip seal rings of lip seal elastic ring, two sealing lips of lip seal ring 10 inwardly draw in, and make the lip seal folk prescription to inefficacy, thereby finish the pressure leak process of the middle cavity pressure of valve body 5, this throws off spheroid with the valve body lumen pressure release of the two emission type ball valves of the two blocking-up of common single piston in the past by valve seat insert under the effect of pressure medium difference to finish the mode of valve body lumen pressure leak process different fully, here do not need to form the pressure release that reverse pressure medium difference just can be finished valve body 5 lumens, just the piston external diameter design of described valve seat can be reduced, thereby reach the purpose that reduces valve opening and closing moment.
The utility model is not limited to above-mentioned mode of execution, and under the situation that does not deviate from flesh and blood of the present utility model, any distortion that those skilled in the art can expect, improvement, replacement all fall into scope of the present utility model.
Claims (3)
1. two emission type valve seats of the two blocking-up of the single piston of a lip seal, it is characterized in that, described valve seat comprises seating spring, valve seat insert, the valve seat bearing ring, spheroid, valve body, screw, the lip seal pressure ring, the lip seal bearing ring, the lip seal elastic ring, lip seal ring and cracking formula back pressure ring, wherein, described seating spring is arranged between the supporting plane of valve seat bearing ring and described valve body, described valve seat insert extruding is mounted in the described valve seat bearing ring, described lip seal ring is assemblied in the seal groove that is formed between described valve seat bearing ring and the described valve body, described lip seal pressure ring is fixed on the described valve seat bearing ring by described screw, described lip seal elastic ring is installed in the described lip seal ring, and described cracking formula back pressure ring is installed in the back of described lip seal ring.
2. the two emission type valve seats of the two blocking-up of the single piston of lip seal according to claim 1 is characterized in that, are provided with the fire proof seal circle in the periphery of described valve seat bearing ring, are respectively arranged with the seal gease injecting structure at described valve seat bearing ring and described valve body.
3. the two emission type valve seats of the two blocking-up of the single piston of lip seal according to claim 1 is characterized in that described cracking formula back pressure ring is made of two identical split rings of cone angle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220747742 CN203051822U (en) | 2012-12-31 | 2012-12-31 | Lip-sealing single-piston double-blocking double-drainage valve seat |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220747742 CN203051822U (en) | 2012-12-31 | 2012-12-31 | Lip-sealing single-piston double-blocking double-drainage valve seat |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203051822U true CN203051822U (en) | 2013-07-10 |
Family
ID=48734776
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220747742 Expired - Lifetime CN203051822U (en) | 2012-12-31 | 2012-12-31 | Lip-sealing single-piston double-blocking double-drainage valve seat |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203051822U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104235415A (en) * | 2014-09-11 | 2014-12-24 | 北京航天试验技术研究所 | Manual sealed adjustable ball valve |
| CN104265932B (en) * | 2014-09-11 | 2017-01-18 | 北京航天试验技术研究所 | Novel adjustable sealing ball valve with high pressure releasing function |
| CN106641320A (en) * | 2017-02-14 | 2017-05-10 | 中国船舶重工集团公司第七二五研究所 | Valve rod seal structure of underwater ball valve |
| CN110056668A (en) * | 2018-01-18 | 2019-07-26 | 贺增华 | A kind of fixing ball valve |
-
2012
- 2012-12-31 CN CN 201220747742 patent/CN203051822U/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104235415A (en) * | 2014-09-11 | 2014-12-24 | 北京航天试验技术研究所 | Manual sealed adjustable ball valve |
| CN104265932B (en) * | 2014-09-11 | 2017-01-18 | 北京航天试验技术研究所 | Novel adjustable sealing ball valve with high pressure releasing function |
| CN106641320A (en) * | 2017-02-14 | 2017-05-10 | 中国船舶重工集团公司第七二五研究所 | Valve rod seal structure of underwater ball valve |
| CN106641320B (en) * | 2017-02-14 | 2020-07-24 | 中国船舶重工集团公司第七二五研究所 | Valve rod sealing structure of underwater ball valve |
| CN110056668A (en) * | 2018-01-18 | 2019-07-26 | 贺增华 | A kind of fixing ball valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Free format text: FORMER OWNER: YIN DAOCHENG CHEN SHUANGPIN Effective date: 20141224 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20141224 Address after: 101500 Beijing Miyun City Economic Development Zone C Yan Road No. 9-1 Patentee after: RAYMOND (BEIJING) VALVE MANUFACTURING Co.,Ltd. Address before: 101500 Beijing Miyun City Economic Development Zone C Yan Road No. 9-1 Patentee before: RAYMOND (BEIJING) VALVE MANUFACTURING Co.,Ltd. Patentee before: Yin Daocheng Patentee before: Chen Shuangpin |
|
| C56 | Change in the name or address of the patentee |
Owner name: RAYMOND (BEIJING) TECHNOLOGY CO., LTD. Free format text: FORMER NAME: RAYMOND (BEIJING) VALVE MANUFACTURING CO., LTD. |
|
| CP01 | Change in the name or title of a patent holder |
Address after: 101500 Beijing Miyun City Economic Development Zone C Yan Road No. 9-1 Patentee after: RAYMOND (BEIJING) TECHNOLOGY CO.,LTD. Address before: 101500 Beijing Miyun City Economic Development Zone C Yan Road No. 9-1 Patentee before: Raymond (Beijing) valve manufacturing Limited by Share Ltd. Address after: 101500 Beijing Miyun City Economic Development Zone C Yan Road No. 9-1 Patentee after: Raymond (Beijing) valve manufacturing Limited by Share Ltd. Address before: 101500 Beijing Miyun City Economic Development Zone C Yan Road No. 9-1 Patentee before: RAYMOND (BEIJING) VALVE MANUFACTURING Co.,Ltd. |
|
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20200630 Address after: 056000 Lintan Industrial Park, Jinnan New District, Handan City, Hebei Province (Lintan Town Fan Village) Patentee after: Hebei Raymond Valve Manufacturing Co.,Ltd. Address before: 101500 Beijing Miyun City Economic Development Zone C Yan Road No. 9-1 Patentee before: RAYMOND (BEIJING) TECHNOLOGY Co.,Ltd. |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130710 |