CN1013988B - Expanding valve sealing structure - Google Patents
Expanding valve sealing structureInfo
- Publication number
- CN1013988B CN1013988B CN 87100516 CN87100516A CN1013988B CN 1013988 B CN1013988 B CN 1013988B CN 87100516 CN87100516 CN 87100516 CN 87100516 A CN87100516 A CN 87100516A CN 1013988 B CN1013988 B CN 1013988B
- Authority
- CN
- China
- Prior art keywords
- valve
- fulcrum
- sealing
- combination
- rod
- 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
Links
- 238000007789 sealing Methods 0.000 title claims abstract description 37
- 230000008878 coupling Effects 0.000 claims description 7
- 238000010168 coupling process Methods 0.000 claims description 7
- 238000005859 coupling reaction Methods 0.000 claims description 7
- 230000015572 biosynthetic process Effects 0.000 claims description 3
- 230000009977 dual effect Effects 0.000 abstract 1
- 229910000831 Steel Inorganic materials 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 239000010959 steel Substances 0.000 description 4
- 239000000463 material Substances 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 239000004677 Nylon Substances 0.000 description 1
- 239000004809 Teflon Substances 0.000 description 1
- 229920006362 Teflon® Polymers 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 229920001971 elastomer Polymers 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 229920001778 nylon Polymers 0.000 description 1
- 239000005060 rubber Substances 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Images
Landscapes
- Lift Valve (AREA)
Abstract
The ball valve, the butterfly valve, the plug valve and the gate valve adopt an expanding type sealing structure, the sealing surface is not scratched, the opening and closing is labor-saving, the service life is long, and the valve is suitable for high-temperature and high-pressure media.
The upper valve rod (4) moves downwards, the lower valve rod (5) moves upwards, a combination ring (9) formed by connecting four arc-shaped connecting rods in a dual mode is used for propping open the left valve clack (2A) and the right valve clack (2B) to be tightly attached to the valve seat, and the valve is closed; the upper valve rod (4) moves upwards, the lower valve rod (5) moves downwards, the combination ring (9) drives the left valve clack (2A) and the right valve clack (2B) to leave the valve seat, the pressure in the valve cavity is balanced, the valve rods of the ball valve, the butterfly valve and the plug valve rotate by 90 degrees, the valve rod of the gate valve continues to move upwards, and the valve is opened.
Description
The invention relates to ball valve, butterfly valve, cock net,, the invention of the General valve sealing configuration of straight-through form such as gate valve.
With the valve that prior art is made, general encapsulating method is to apply precompression between sealing pair or leaning on the precision-fit between sealing surface or lean on the wedge power of flashboard to valve seat, and the formation sealing force.These methods when valve opening and closing, all have slide relative between two sealing surfaces, be easy to generate scratch, destroy sealability, influence valve working life.In order to address this problem, common way is: built-up welding rub resistance, high temperature resistant, corrosion resistant Hardmetal materials and Sealing adopt flexible barrier materials such as nylon, teflon, rubber on sealing surface, and use sealing configurations such as elastic seat, elastic floating valve seat and Flexible disc, though increased crocking resistance and sealing force like this, can not reduce or eliminate friction.
" external valve mechanism design reference atlas-external valve patent a collection of selected materials " according to the nineteen eighty-three chief editor of Shenyang Valve Inst. publication introduced: the bracing type gate valve of B. P. announcement on March 5th, 1980, the inlet seal plate valve of U. S. Patent announcement in 9 days February nineteen eighty-two, and the valving of Japan Patent announcement on September 1st, 1981.They are respectively the changes by the major and minor flashboard relative position of " V " shape face combination, or the change of voussoir and two parallel flashboard relative positions, or the change of distance between a pair of symmetric angle of parallelogram linkage, the total thickness of flashboard when closing, need is broadened, strut to valve seat and to be adjacent to, form sealing force, when need are opened, narrow down, lift off a seat, draw close to the center.Flashboard is up again after treating valve pocket internal pressure balance, valve opening.I am the utility model patent-valve sealing structure of bracing type (number of patent application: 85204475) to State Patent Office's application on October 23rd, 1985, be to be pressed into ellipse by flexible steel ring from circle to strut the combination flashboard, or the combination spheroid, or the combination butterfly plate is pressed to valve seat, the formation sealing.When flexible steel ring reverts to circle from ellipse, drive the combination flashboard, or the combination spheroid, or the combination butterfly plate is lifted off a seat and is drawn close valve pocket internal pressure balance to the center.Gate valve need be opened, and continues up.Ball valve, butterfly valve need be opened, and revolve to turn 90 degrees.
Above-mentioned several valve sealing structure of bracing type can reduce or eliminate friction basically.But foreign patent can only be used for gate valve, and makes complicated.Though my patent of application is simple in structure, makes easily, is suitable for multiple valve,, the performance of flexible steel ring is difficult for grasping, and the work number of times is many more, and medium temperature is high more, and the performance of flexible steel ring is unreliable more.
The objective of the invention is to provide a kind of multiple valve that both had been suitable for, simple in structure again, make easily, and the very reliable valve sealing structure of bracing type of work.
This valve sealing structure of bracing type is in body cavity, installs one or several associative rings.Every associative ring is circular by four arc coupling rod coileds, and the antithesis connection forms.The internal diameter of ring generally is greater than or equals the inside nominal diameter of ball valve, stopcock.Have four to connect fulcrums on the ring, last fulcrum is directly or indirectly driven by valve rod, can make progress, downwards and rotating operation, and lower fulcrum is done to make progress with last fulcrum, downward traffic direction is opposite, the interlock that sense of rotation is identical.The left and right flap of left and right two fulcrums and valve connects.
Working procedure of the present invention is: go up fulcrum under valve rod drives, when moving downwards, lower fulcrum is interlock upwards, and at this moment left and right two fulcrums promptly strut valve closing together with left and right two flaps to valve seat.When last fulcrum under valve rod drives, when upwards moving, lower fulcrum links downwards, at this moment left and right two fulcrums are lifted off a seat together with left and right two flaps, occur the gap between sealing surface, and the valve pocket internal pressure is in a basic balance, valve rod together with associative ring and flap revolve turn 90 degrees or continue up, valve opening.
Said structure, generally be distance between the upper and lower fulcrum equal between the left and right fulcrum apart from the time, flap rotation or up.Distance between the upper and lower fulcrum less than between the left and right fulcrum apart from the time, flap is promptly strutted, valve closing.
In order to shorten the structure length of valve, also can the distance between the upper and lower fulcrum less than between the left and right fulcrum apart from the time, flap rotation or up.After ball valve, stopcock revolve and turn 90 degrees, also need strut flap, could guarantee that like this runner is unimpeded.Distance between upper and lower fulcrum equal between the left and right fulcrum apart from the time, flap just struts valve closing.
Valve sealing face not only can adopt sphere, can also adopt the form of sealings such as the conical surface or plane or arc shaped surface.
The present invention and prior art are compared, not only simple in structure, easy to manufacture, reliable performance, but also more be applicable to the General valve of multiple straight-through forms such as ball valve, butterfly valve, stopcock, gate valve.Can produce high temperature resistant, high pressure, corrosion resistant ball valve, butterfly valve, stopcock easily.The present invention not only kept ball valve, stopcock fluid resistance little, flow to unrestricted, close rapidly, advantage such as highly low, in light weight, but also significantly reduce or eliminated frictional force between sealing surface, improved valve working life greatly, alleviate valve opening and closing power greatly, enlarged the using scope of these valves significantly.
The concrete structure of invention is provided by following embodiment and accompanying drawing thereof.
Fig. 1 be a kind of bracing type ball valve sealing structure of proposing according to the present invention revolve turn 90 degrees before the sectional drawing of (also be open preceding).
Fig. 2 is a kind of bracing type ball valve sealing structure of proposing according to the present invention sectional drawing of when closing (also be) when strutting.
Describe the details and the working condition of the concrete structure that proposes according to the present invention in detail below in conjunction with Fig. 1, Fig. 2.
This structure associative ring (9) at the middle device of left and right valve seat (1A, 1B).Associative ring (9) is circular by arc coupling rod (9A, 9B, 9C, the 9D) coiled of four equal arc length, and the antithesis connection forms, and the internal diameter (D1) of associative ring (9) is more than or equal to the inside nominal diameter (Dg) of ball valve, stopcock.There are four to connect fulcrum (3A, 3B, 3C, 3D) on the associative ring (9), last fulcrum (3B) and upper valve rod (4) connect, lower fulcrum (3C) and lower valve rod (5) connect, and left fulcrum (3A), right fulcrum (3D) connect with the right flap of left flap (2A) (2B) respectively.When upper valve rod (4) together with last fulcrum (3B) arc coupling rod (9A, 9B) when moving downwards, lower valve rod (5) is together with upwards interlock of lower fulcrum (3C) arc coupling rod (9C, 9D), at this moment the internal diameter of associative ring (9) struts from circular (D1) and becomes ellipse (D2), left side fulcrum (3A), right fulcrum (3D) strut to left and right valve seat (1A, 1B) together with left flap (2A), right flap (2B), flap sealing surface (8A, 8B) is adjacent to sealing surface of seat (6A, 6B), and ball valve is closed (see figure 2).When upper valve rod (4) together with last fulcrum (3B), arc coupling rod (9A, 9B) is when upwards moving, lower valve rod (5) is together with lower fulcrum (3C) arc coupling rod (9C, 9D) interlock downwards.At this moment the internal diameter of associative ring (9) becomes circle (D1) from the ellipse (D2) that struts again, left side fulcrum (3A), right fulcrum (3D) leave left and right sealing surface of seat (6A, 6B) together with left flap (2A), right flap (2B), draw close to the center, at this moment, valve pocket internal pressure (see figure 1) in a basic balance.Revolve together with left and right flap (2A, 2B) and lower valve rod (5) and turn 90 degrees when upper valve rod (4) drives associative ring (9), ball valve is opened.
Realize that the present invention can be with two kinds of methods:
One, improves the sealing configuration of General valve of the straight-through form such as ball valve, butterfly valve, stopcock, gate valve of prior art with the present invention-valve sealing structure of bracing type.
Two, with the characteristics of the present invention-valve sealing structure of bracing type, specialized designs goes out the General valve new range product of the straight-through form of various models, specification-strut valve.
Claims (1)
- A kind of valve sealing structure of bracing type, it is used for General valve, particularly ball valve, butterfly valve, the stopcock of straight-through form, the combination seal (combination spheroid, combination butterfly plate, combination tapered plug, combination flashboard) of gate valve, when need are closed, can strut to two sealing surface of seats and be adjacent to the formation sealing; And when need are opened, can leave two sealing surface of seats, and draw close to the center, make and leave the gap between sealing surface, this structure is at one of Sealing middle device or several associative rings, it is characterized in that:A, described associative ring are by four arc coupling rods, and the antithesis connection forms, and have four of upper and lower, left and right to connect fulcrum on the ring, and upper and lower fulcrum and upper and lower valve rod connect, and left and right fulcrum and left and right flap connect,B, the internal diameter of associative ring when circle are equal to or greater than the inside nominal diameter of ball valve, stopcock.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 87100516 CN1013988B (en) | 1987-01-24 | 1987-01-24 | Expanding valve sealing structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 87100516 CN1013988B (en) | 1987-01-24 | 1987-01-24 | Expanding valve sealing structure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1032845A CN1032845A (en) | 1989-05-10 |
| CN1013988B true CN1013988B (en) | 1991-09-18 |
Family
ID=4812906
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 87100516 Expired CN1013988B (en) | 1987-01-24 | 1987-01-24 | Expanding valve sealing structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1013988B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1332146C (en) * | 2004-12-23 | 2007-08-15 | 潘世永 | Double seal valve |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104214359A (en) * | 2014-08-30 | 2014-12-17 | 常州市海盈五金科技有限公司 | Encrypted valve |
| CN104806776B (en) * | 2015-05-12 | 2017-09-22 | 江苏五星波纹管有限公司 | A kind of pair of plate partition door |
| CN113446409B (en) * | 2021-08-30 | 2021-11-16 | 天津市塘沽沃特斯阀门有限公司 | Soft sealing rising stem gate valve |
-
1987
- 1987-01-24 CN CN 87100516 patent/CN1013988B/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1332146C (en) * | 2004-12-23 | 2007-08-15 | 潘世永 | Double seal valve |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1032845A (en) | 1989-05-10 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C06 | Publication | ||
| PB01 | Publication | ||
| C13 | Decision | ||
| GR02 | Examined patent application | ||
| 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 |