CN101240858A - Ball valve - Google Patents
Ball valve Download PDFInfo
- Publication number
- CN101240858A CN101240858A CNA2008100826533A CN200810082653A CN101240858A CN 101240858 A CN101240858 A CN 101240858A CN A2008100826533 A CNA2008100826533 A CN A2008100826533A CN 200810082653 A CN200810082653 A CN 200810082653A CN 101240858 A CN101240858 A CN 101240858A
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- valve seat
- valve
- ball
- ball valve
- seat
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Abstract
The present invention provides a ball valve, including a ball valve case, a valve plug and a valve base. The valve base is composed of an inner valve base made by metal which relatively individual movement, a main valve base made by plastic high molecular polymer or other kindred metals and an outer valve base made by metal, the inner, main and outer valve bases are loaded by their loading springs respectively at the same time. The main valve base mainly plays an important role in seal by adopting the structure, the inner and outer valve bases play an important role in auxiliary seal, and protects main valve base surface from damage by grain medium at the same time. The inside of the inner valve base and the outside of the outer valve are processed normal parallel to the valve plug ball, gives full play to the function of scraping impurity attached to the valve ball surface of the inner and outer valve bases, futher protects the main valve base surface. It is a real ball valve seal base having soft, hard seal performances.
Description
Technical field
The present invention relates to a kind of ball valve, it comprises ball valve shell, spool and valve seat.
Background technique
At present, public ball seat is soft seal or just hard sealing.The soft seal valve seat is made by plastics family macromolecule polymer independently or the plastics family macromolecule polymer that is embedded in the metal intensive aspect; what such valve seat sealed all is plastics family macromolecule polymer; even inserted structure; because after edge is good; plastics family macromolecule polymer and metal intensive aspect are in aggregates; plastics family macromolecule polymer can not be relatively and the metal intensive aspect any relatively moving arranged; reliable in order to ensure sealing; plastics family macromolecule polymer just must be higher than the metal intensive aspect; guarantee directly to contact with spheroid; what seal is plastics family macromolecule polymer; the sealing surface of plastics family macromolecule polymer also can not get the protection of metal intensive aspect, and sealability is easy to be destroyed by granule medium.The sealing pair of pure hard sealed valve all is a metal, and it is more very different than soft seal to test its sealability with cleaning medium.Also there be a kind of being known as to have ball valve soft, hard sealability simultaneously concurrently on the market now, the valve seat of this valve is combined to form with rubber parts and metal body, in case combine, rubber parts also can not move freely with respect to metalwork, be to utilize the large deformation of rubber body to reach rubber parts to contact with spheroid the time with metal body, but because the hardness of rubber parts is limited, tearing toughness is not high, be difficult to bear the stranding mill under the sphere contact, the life-span is limited.For the sealability that obtains, rubber parts must have enough decrements, so when rubber parts does not contact sphere, rubber parts will exceed much than the metal body that constitutes valve seat, in the valve opening process, be easy to be caused seal failure by the gnawing brokenly with one voice or breaking of spheroid sphere and runner.Even if some utilizes pressure medium rubber body to be pushed to the design of spheroid sphere, under the situation of no pressure reduction, rubber body exceeds metal body seldom, but reliable, release fully that this design is difficult to guarantee, the a lot of situation of metal body still can appear exceeding when rubber body is left the spheroid sphere, so the phenomenon that foregoing rubber body " is gnawed brokenly or broken " also can occur, cause seal failure.
Summary of the invention
The technical problem to be solved in the present invention is that a kind of ball valve will be provided, and its existing good sealability can have been born the influence of particle in the medium again, and durable in use.
For this reason, the invention provides a kind of ball valve, it comprises ball valve shell, spool and valve seat.Valve seat is made up of valve seat 6, plastics family macromolecule polymer or other similar nonmetal system main valve seats 5 and metallic outer seat 3 in can relatively independent mobile metallic, simultaneously in valve seat 6, main valve seat 5 and outer seat 3 load by separately loading spring respectively.
After taking said structure; interior valve seat 6, main valve seat 5 and outer seat 3 are not an integral body; be Spielpassung each other; axially can be free to slide relatively; under the effect of loading spring and pressure medium separately; interior valve seat 6, main valve seat 5 and outer seat 3 can contact spool 2 spheres simultaneously; 5 main seal actions of main valve seat; when interior valve seat 6 and outer seat 3 play the auxiliary seal effect; key is that the particle in the block media enters between spool 2 spheres and the main valve seat 5, thereby plays the purpose of protection main valve seat 5 sealing surfaces.The outer side surface of the inner side surface of interior valve seat 6 and outer seat 3 all is processed into parallel with spool 2 sphere normal direction, gives full play to the function that inside and outside valve seat scraping attaches to the impurity on spool 2 spheres, further plays the purpose of protection main valve seat 5 sealing surfaces.Plastics family macromolecule polymer or other similar non-metallic bodies contact spool 2 spheres simultaneously with metal body; plastics family macromolecule polymer or other similar non-metallic bodies play main sealing; but the sealing surface of plastics family macromolecule polymer or other similar non-metallic bodies can also be subjected to the protection of metal body simultaneously, is really to have ball valve sealing valve seat soft, hard sealability concurrently.
As a kind of improvement of the present invention, the Spielpassung of certain-length is arranged between the interior valve seat 6 of this ball valve and ball valve shell 1 passing hole, enter interior valve seat 6 spring eyes, the normal performance of valve seat 6 spring functions in the influence to prevent granule medium.
As another kind of improvement the of the present invention, the groove processing of the O-ring seals between this ball valve main valve seat 5 and the ball valve shell 1 has been avoided the trouble of processing groove in ball valve shell 1 endoporus on the cylindrical of main valve seat 5.
As another kind of improvement the of the present invention, the loading spring of the interior valve seat 6 of this ball valve, main valve seat 5 and outer seat 3 is all or part of according to actual needs is leaf spring, to increase loading force.
As another kind of improvement the of the present invention, valve seat 6 has the greasing loop with ball valve shell 1 in this ball valve, to satisfy the needs of the main valve seat urgent greasing sealing in 5 destroyed backs.Can enter into smoothly between main valve seat 5 and spool 2 spheres in order to ensure the seal gease that injects, repair the breakage of main valve seat 5, reach the purpose of urgent sealing, the O-ring seals in the upstream and downstream in greasing loop has respectively increased together between valve seat 6 and the ball valve shell 1.Between valve seat 6 and the ball valve shell 1 carbon seal ring and trim ring are arranged in this ball valve, to realize the frpf function.
As another kind of improvement the of the present invention, improve the Cross section Design of main valve seat 5 and interior valve seat 6, make the minimum diameter of main valve seat 5 less than possible sealing surface diameter between main valve seat 5 and spool 2 spheres, realize the function of single valve seat two way sealed.Be provided with ring washer 4 between main valve seat and the ball valve shell, the O-ring seals between the O-ring seals between ring washer 4 and ball valve shell 1 and the interior valve seat 6, main valve seat 5 and the interior valve seat 6, assistance reaches the purpose of two way sealed.
Description of drawings
The present invention is further illustrated below in conjunction with drawings and Examples.
Fig. 1 is first embodiment's sectional drawing of the present invention.
Fig. 2 is second embodiment's sectional drawing of the present invention.
Fig. 3 is the 3rd embodiment's sectional drawing of the present invention.
Fig. 4 is the 4th embodiment's sectional drawing of the present invention.
Fig. 5 is the 5th embodiment's sectional drawing of the present invention.
Fig. 6 is the 6th embodiment's sectional drawing of the present invention.
1. ball valve shells among the figure, 2. spool, 3. outer seat, 4. ring washer, 5. main valve seat, 6. in valve seat.
Embodiment
As can be seen from Figure 1, interior, the outer seat of advocating peace is separate, and respectively by separately spring-loaded, under the acting in conjunction of loading spring and pressure medium, sealing surface interior, the outer seat of advocating peace can contact with the spool sphere simultaneously.Main valve seat plays main seal action, and when inside and outside valve seat played auxiliary seal, protection main valve seat sealing surface was not damaged by granule medium.Between main valve seat and the ball valve shell by O-ring seals sealing, between outer seat and the ball valve shell, do not need sealing between interior valve seat and the ball valve shell.
As another embodiment of the invention, as shown in Figure 2,, enter interior valve seat spring eye, the normal performance of valve seat spring function in the influence to prevent granule medium the fitting surface that is processed with certain-length between interior valve seat and the ball valve shell passage.
As another embodiment of the invention, as shown in Figure 3, the O-ring seals groove processing between main valve seat and the ball valve shell on the main valve seat cylindrical, has been avoided the trouble of processing groove in the ball valve shell endoporus.
As another embodiment of the invention, as shown in Figure 4, all or part of leaf spring that changes into of loading spring interior, the outer seat of advocating peace.
As another embodiment of the invention, as shown in Figure 5, in ball valve shell and interior valve seat, all be processed with the greasing loop, to satisfy the needs of the urgent greasing sealing in the destroyed back of main valve seat.Can enter into smoothly between main valve seat and the spool sphere in order to ensure the seal gease that injects, repair the breakage of main valve seat, reach the purpose of urgent sealing, O-ring seals in the upstream and downstream in greasing loop has respectively increased together between valve seat and the ball valve shell, simultaneously between interior valve seat and ball valve shell, increase carbon seal ring, to realize the frpf function,, increased trim ring for guaranteeing the graphite reliable sealing.
As another embodiment of the invention, relation between interior valve seat, main valve seat and the ring washer is designed to as shown in Figure 6 form, make the minimum diameter of main valve seat less than sealing surface diameter possible between main valve seat and the spool sphere, in such one, the combination of advocate peace outer seat and ring washer can reach the purpose of two way sealed.For realizing the function of single valve seat combination two way sealed, except that the Cross section Design of valve seat in will changing and main valve seat, also to strengthen the cross section of ring washer, so that can increase O-ring seals between ring washer and ball valve shell and the interior valve seat, between main valve seat and interior valve seat, also to increase by an O-ring seals simultaneously.
Several typical embodiment in sum both can be implemented separately, and also combination in any is implemented as required, even can implement all above-mentioned several modes in an application example.
Claims (7)
1, a kind of ball valve, comprise ball valve shell, spool and valve seat, it is characterized in that: valve seat is made up of valve seat, plastics family macromolecule polymer or other similar nonmetal system main valve seats and metallic outer seat in can relatively independent mobile metallic, simultaneously in valve seat, main valve seat and outer seat load by separately loading spring respectively.
2, ball valve as claimed in claim 1 is characterized in that: the Spielpassung that certain-length is arranged between interior valve seat and the ball valve shell passing hole.
3, ball valve as claimed in claim 1 is characterized in that: the groove processing of the O-ring seals between main valve seat and the ball valve shell is on the cylindrical of main valve seat.
4, ball valve as claimed in claim 1 is characterized in that: the loading spring of interior valve seat, main valve seat and outer seat is all or part of to be leaf spring.
5, ball valve as claimed in claim 1 is characterized in that: interior valve seat and ball valve shell have the greasing loop, the O-ring seals in the upstream and downstream in greasing loop respectively has together between valve seat and the ball valve shell.
6, as claim 1 or 5 described ball valves, it is characterized in that: carbon seal ring and trim ring are arranged between interior valve seat and the ball valve shell.
7, ball valve as claimed in claim 1, it is characterized in that: the minimum diameter of main valve seat is less than sealing surface diameter possible between main valve seat and the spool sphere, between main valve seat and the ball valve shell ring washer is arranged, between ring washer and ball valve shell and the interior valve seat O-ring seals is arranged simultaneously, between main valve seat and the interior valve seat O-ring seals is arranged also.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008100826533A CN101240858A (en) | 2008-02-26 | 2008-02-26 | Ball valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008100826533A CN101240858A (en) | 2008-02-26 | 2008-02-26 | Ball valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101240858A true CN101240858A (en) | 2008-08-13 |
Family
ID=39932586
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2008100826533A Pending CN101240858A (en) | 2008-02-26 | 2008-02-26 | Ball valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101240858A (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103629388A (en) * | 2013-11-27 | 2014-03-12 | 凯喜姆阀门有限公司 | Low-temperature fixed ball valve |
| CN104565421A (en) * | 2013-10-29 | 2015-04-29 | 上海上冶阀门制造有限公司 | Double-power two-way composite sealing type low-temperature ball valve |
| CN104948763A (en) * | 2015-07-06 | 2015-09-30 | 昆山维萨阀门有限公司 | Top entry type high-temperature hard seal ball valve |
| CN105221786A (en) * | 2015-10-26 | 2016-01-06 | 大连福佳·大化石油化工有限公司 | Soft or hard double-seal ball valve |
| CN108916416A (en) * | 2018-09-25 | 2018-11-30 | 四川勃朗蜀威科技有限公司 | A kind of compensation sealing valve seat |
| CN109210233A (en) * | 2018-11-16 | 2019-01-15 | 高昂 | A kind of pneumatic Unloading ball valve |
| CN112780795A (en) * | 2021-02-27 | 2021-05-11 | 佛山信卓派思机械科技有限公司 | Long-life ball valve |
-
2008
- 2008-02-26 CN CNA2008100826533A patent/CN101240858A/en active Pending
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104565421A (en) * | 2013-10-29 | 2015-04-29 | 上海上冶阀门制造有限公司 | Double-power two-way composite sealing type low-temperature ball valve |
| CN103629388A (en) * | 2013-11-27 | 2014-03-12 | 凯喜姆阀门有限公司 | Low-temperature fixed ball valve |
| CN103629388B (en) * | 2013-11-27 | 2017-01-25 | 凯喜姆阀门有限公司 | Low-temperature fixed ball valve |
| CN104948763A (en) * | 2015-07-06 | 2015-09-30 | 昆山维萨阀门有限公司 | Top entry type high-temperature hard seal ball valve |
| CN105221786A (en) * | 2015-10-26 | 2016-01-06 | 大连福佳·大化石油化工有限公司 | Soft or hard double-seal ball valve |
| CN108916416A (en) * | 2018-09-25 | 2018-11-30 | 四川勃朗蜀威科技有限公司 | A kind of compensation sealing valve seat |
| CN109210233A (en) * | 2018-11-16 | 2019-01-15 | 高昂 | A kind of pneumatic Unloading ball valve |
| CN112780795A (en) * | 2021-02-27 | 2021-05-11 | 佛山信卓派思机械科技有限公司 | Long-life ball valve |
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| C06 | Publication | ||
| PB01 | Publication | ||
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Open date: 20080813 |