CN2345802Y - Double-wedge semisphere ball valve - Google Patents
Double-wedge semisphere ball valve Download PDFInfo
- Publication number
- CN2345802Y CN2345802Y CN 98240135 CN98240135U CN2345802Y CN 2345802 Y CN2345802 Y CN 2345802Y CN 98240135 CN98240135 CN 98240135 CN 98240135 U CN98240135 U CN 98240135U CN 2345802 Y CN2345802 Y CN 2345802Y
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- CN
- China
- Prior art keywords
- wedge
- valve
- type
- double
- hemisphere
- 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 - Lifetime
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- Taps Or Cocks (AREA)
Abstract
The utility model discloses a double-wedge semisphere ball valve, composed of a valve body, a valve-stem nut, filler and a gland. A valve seat is arranged in the valve body, and two wedge semispheres are arranged in the valve seat. A wedge valve stem is penetrated through the gland, the filler and the valve stem nut, and connected with the wedge semispheres. The utility model has the advantages of higher using temperature and pressure, good tightness, and long service life. The utility model is a valve with wide future.
Description
The utility model relates to the valve of engineering component, especially with the valve of spherical valve member.
Valve is the universal machine product that control media flows.Disadvantages such as existing valve exists serviceability temperature and working pressure is on the low side, leakage rate is higher, working life is short partially also have a certain distance with world's valve level.
The valve of new generation that the purpose of the utility model is to disclose a kind of serviceability temperature and pressure is higher, leakage rate is lower, working life is long.
The scheme that the utility model adopts double-wedge type semi-spherical to substitute traditional integral spherical closing element realizes goal of the invention.
Double-wedge type semi-spherical ball valve is by valve body and dress Stem Mut and filler within it, and the gland that is contained in valve body top is formed.Valve seat is housed in the valve body, two wedge-type hemisphere are housed in the valve seat.The wedge-type valve rod passes gland, filler and Stem Mut and connects with wedge-type hemisphere.
Below in conjunction with embodiment shown in the drawings, the utility model is done detailed explanation.
Accompanying drawing 1 and 3 is the utility model embodiment one plan view and left view, and accompanying drawing 2 and 4 is the utility model embodiment two plan views and left view, and accompanying drawing 5 is valve seat embodiment one plan views.Accompanying drawing 6 and 7 is wedge-type valve rod embodiment one plan view and plan view, accompanying drawing 8,9 and 10 is wedge-type hemisphere embodiment one plan view, plan view and left view, accompanying drawing 11,12 and 13 is wedge-type hemisphere embodiment two plan views, plan view and left view, and accompanying drawing 14,15 and 16 is wedge-type hemisphere embodiment three plan views, plan view and left view.
Shown in accompanying drawing 1 to 4, double-wedge type semi-spherical ball valve is by valve body 7 and dress Stem Mut 4 and filler 11 within it, and the gland 2 that is contained in valve body 7 tops is formed.Valve body 7 can be designed to dichotomic type, triplasy or integrated type.Embodiment one is a dichotomic type, and embodiment two is triplasies.
Shown in accompanying drawing 1 to 16, valve seat 6 is housed in the double-wedge type semi-spherical ball valve valve body 7, two wedge-type hemisphere 5 are housed in the valve seat 6, wedge-type valve rod 3 passes gland 2, filler 11 and Stem Mut 4 and connects with wedge-type hemisphere 5.
Shown in accompanying drawing 1 to 4 and accompanying drawing 8 to 16, wedge-type hemisphere 5 has sealing sphere 16, and wedge surface 15 is arranged at top, and cylndrical surface or plane 17 can be arranged at the bottom, certainly, also can not have cylndrical surface or plane 17.Wedge-type hemisphere 5 forms and reaches the sealing force of needs between the sealing surface 13 of sealing sphere 16 and valve seat 6 under 3 externally applied forces effects of wedge-type valve rod, its seal form forms two-sided forced seal at last from increasing step by step from motive sealing, single face forced seal.Cylndrical surface or plane 17 are location usefulness.
Shown in accompanying drawing 1 to 5 and accompanying drawing 8 to 16, sealing surface 13 and guiding sphere 14 are arranged in the valve seat 6.The effect of guiding sphere 14 is that wedge-type hemisphere is worked more reliably.
Shown in accompanying drawing 1 to 4 and accompanying drawing 6 to 7, butterfly spring 12 is arranged at the bottom of wedge-type valve rod 3, and perhaps overhead cam 9 and following cam 10 are arranged at top.Wedge surface 15 is arranged on the wedge-type valve rod 3, cooperate with wedge surface 15 on the wedge-type hemisphere 5.Wedge-type valve rod 3 is handled wedge-type hemisphere 5, realizes the opening and closing of valve.When closing, wedge-type valve rod 3 can apply sealing force to wedge-type hemisphere 5.The sealing pretightening force can be the spring pretension, also can be the cam pretension.Embodiment two is spring pretensions, i.e. butterfly spring 12 pretensions.Embodiment one is the cam pretension, and overhead cam 9 and following cam 10 are contained between thrust-bearing 8 and the gland 2, and thrust-bearing 8 usefulness supports 1 are fixed on the valve body 7.
The working principle of double-wedge type semi-spherical ball valve is; In the valve opening and closing process, wedge-type hemisphere 5 is under the manipulation of wedge-type valve rod 3, by the enable possition to the operating position transition, perhaps by operating position to the enable possition transition, at this moment under the effect that wedge-type valve rod 3 is pressed in fluid, 12 compressions of butterfly spring or cam loosen, and pretightening force reduces, the frictional force of the sphere of wedge-type hemisphere 5 and valve seat 6 reduces, and makes the keying operation lighter.When the valve wide open position, owing to the effect of pressing in the fluid, 12 compressions of butterfly spring, or overhead cam 9 loosens 6 pretightening forces minimizings of sphere and valve seat with following cam 10.When the valve full close position, the interior pressure of fluid disappears, and wedge-type valve rod 3 is under butterfly spring 12 or action of cam, and compressing wedge-type hemisphere 5 makes the pretension sealing force that formation is adjusted between sphere and the valve seat 6, thereby reaches the purpose of sealing.
Obviously, double-wedge type semi-spherical ball valve is except the advantage with general ball valve, and also have following special advantage: serviceability temperature and working pressure are greatly improved; Sealability is better, and leakage rate is lower, can adapt to various service speeds, can realize telecontrol and automation control, can jam during work, there is not impact during fast opening and closing, and it is little to open and close moment, and the sealing surface abrasion is few, so bigger prolongation is arranged working life.
Double-wedge type semi-spherical valve valve has solved the difficult problem of ball valve to the high level development from structure, therefore becomes the outstanding person in the rotary valve class.Because the manufacturing technology difficulty of sealing surface reduces, and can make the technical parameter level of China's ball valve catch up with and surpass world level, substitute import.From the Technological Economy angle, can replace stopcock, butterfly valve, gate valve and stop valve; From social benefit, can satisfy the needs of national economy all departments, satisfy the needs of scientific technological advance.Therefore, double-wedge type semi-spherical ball valve is a kind of valve of having a bright future.
In the embodiment shown in the figures, embodiment one is inside nominal diameter Dg50mm, and nominal pressure Pg is senior middle school's temperature high pressure valve of 10MPa.Embodiment two is that nominal common name Dg is 25mm, to claim that pressure P g is senior middle school's temperature middle pressure valve of 6.4MPa.
Claims (5)
1, a kind of double-wedge type semi-spherical ball valve, form by within it Stem Mut (4) and filler (11) of valve body (7) and dress, the gland (2) that is contained in valve body (7) top, it is characterized in that being equipped with in the valve body (7) valve seat (6), two wedge-type hemisphere (5) are housed in the valve seat (6), and wedge-type valve rod (3) passes gland (2), filler (11) and Stem Mut (4) and connects with wedge-type hemisphere (5).
2, by the described double-wedge type semi-spherical ball valve of claim 1, it is characterized in that wedge-type hemisphere (5) has sealing sphere (16), wedge surface (15) is arranged at top, and cylndrical surface or plane (17) can be arranged at the bottom.
3,, it is characterized in that having in the valve seat (6) sealing surface (13) and guiding sphere (14) by claim 1 or 2 described double-wedge type semi-spherical ball valves.
4, by claim 1 or 2 described double-wedge type semi-spherical ball valves, it is characterized in that butterfly spring (12) is equipped with in the bottom of wedge-type valve rod (3), perhaps overhead cam (9) and following cam (10) are equipped with in top.
5, by the described double-wedge type semi-spherical ball valve of claim 3, it is characterized in that butterfly spring (12) is equipped with in the bottom of wedge-type valve rod (3), perhaps overhead cam (9) and following cam (10) are equipped with in top.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 98240135 CN2345802Y (en) | 1998-08-24 | 1998-08-24 | Double-wedge semisphere ball valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 98240135 CN2345802Y (en) | 1998-08-24 | 1998-08-24 | Double-wedge semisphere ball valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2345802Y true CN2345802Y (en) | 1999-10-27 |
Family
ID=33987241
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 98240135 Expired - Lifetime CN2345802Y (en) | 1998-08-24 | 1998-08-24 | Double-wedge semisphere ball valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2345802Y (en) |
-
1998
- 1998-08-24 CN CN 98240135 patent/CN2345802Y/en not_active Expired - Lifetime
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned | ||
| C20 | Patent right or utility model deemed to be abandoned or is abandoned |