CN1105842C - Double-wedge type semi-spherical ball valve - Google Patents

Double-wedge type semi-spherical ball valve Download PDF

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Publication number
CN1105842C
CN1105842C CN98116800A CN98116800A CN1105842C CN 1105842 C CN1105842 C CN 1105842C CN 98116800 A CN98116800 A CN 98116800A CN 98116800 A CN98116800 A CN 98116800A CN 1105842 C CN1105842 C CN 1105842C
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China
Prior art keywords
valve
wedge
type
spherical ball
double
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Expired - Fee Related
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CN98116800A
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CN1245874A (en
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罗宝生
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Individual
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Individual
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Abstract

The present invention relates to a valve as an engineering element or component, particularly to a valve with a spherical valve element. A double-wedge type hemispherical valve is composed of a valve body, a valve stem nut, filling materials and a gland, wherein a valve seat is arranged in the valve body, and two wedge type hemispheres are arranged in the valve seat; a wedge type valve stem penetrates through the gland, the filling materials and the valve stem nut so as to be connected with the hemispheres. The present invention has the advantages of higher usage temperature and pressure, good tightness, longer service life, etc., and is the valve with a wide prospect.

Description

Double-wedge type semi-spherical ball valve
The present invention 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 present invention's purpose is to disclose a kind of serviceability temperature and pressure is higher, leakage rate is lower, working life is long.
The scheme that the present invention 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 reaches filler and the Stem Mut that is contained in valve body top successively by valve body, and the gland that is contained in the valve body top is formed.Valve seat is equipped with at the middle part of valve body, and two wedge-type hemisphere are housed in the valve seat.The wedge-type valve rod passes gland, filler and Stem Mut and wedge-type hemisphere connects.
Below in conjunction with embodiment shown in the drawings, the present invention is done detailed explanation.
Accompanying drawing 1 and 3 is the embodiment of the invention one plan view and left view, accompanying drawing 2 and 4 is the embodiment of the invention two plan views and left view, 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 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 reaches filler 11 and the Stem Mut 4 that is contained in valve body 7 tops successively by valve body 7, 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, there is sealing sphere 16 outside of wedge-type hemisphere 5, and the top of wedge-type hemisphere 5 the insides has wedge surface 15, bottom that cylndrical surface or plane 17 can be arranged; Certainly, can there be cylndrical surface or plane 17 yet.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 positioning actions.
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 5 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. 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, pretightening force reduces, and 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 also has following special advantage except the advantage with general ball valve, and 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, 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 ball 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 manufacture 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 that inside nominal diameter Dg is 50mm, and nominal pressure Pg is senior middle school's temperature high pressure valve of 10MPa.Embodiment two is that inside nominal diameter Dg is 25mm, and nominal pressure Pg 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, by valve body (7) and be contained in the filler (11) and the Stem Mut (4) on valve body (7) top successively, the gland (2) that is contained in valve body (7) top is formed, valve seat (6) is equipped with at the middle part that it is characterized in that valve body (7), 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 there is sealing sphere (16) outside of wedge-type hemisphere (5), the top of wedge-type hemisphere (5) the inside has wedge surface (15), bottom that cylndrical surface or plane (17) can be arranged.
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.
CN98116800A 1998-08-24 1998-08-24 Double-wedge type semi-spherical ball valve Expired - Fee Related CN1105842C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN98116800A CN1105842C (en) 1998-08-24 1998-08-24 Double-wedge type semi-spherical ball valve

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN98116800A CN1105842C (en) 1998-08-24 1998-08-24 Double-wedge type semi-spherical ball valve

Publications (2)

Publication Number Publication Date
CN1245874A CN1245874A (en) 2000-03-01
CN1105842C true CN1105842C (en) 2003-04-16

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN98116800A Expired - Fee Related CN1105842C (en) 1998-08-24 1998-08-24 Double-wedge type semi-spherical ball valve

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Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN100513850C (en) * 2005-08-23 2009-07-15 浙江华夏阀门有限公司 Sealing sleeve with a triangle section
CN102486235A (en) * 2010-12-03 2012-06-06 浙江正华阀门厂 Unfurled metal sealing ball valve

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4174825A (en) * 1976-12-28 1979-11-20 Nelimarkka Juha Antti Elia Ball valve with reciprocal and rotatable spindle
US4940210A (en) * 1988-03-24 1990-07-10 Gilmore Hugh L Ball valve
CN2209743Y (en) * 1994-08-24 1995-10-11 李扬 Bidirectional sealing rotary core valve

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4174825A (en) * 1976-12-28 1979-11-20 Nelimarkka Juha Antti Elia Ball valve with reciprocal and rotatable spindle
US4940210A (en) * 1988-03-24 1990-07-10 Gilmore Hugh L Ball valve
CN2209743Y (en) * 1994-08-24 1995-10-11 李扬 Bidirectional sealing rotary core valve

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PB01 Publication
C10 Entry into substantive examination
SE01 Entry into force of request for substantive examination
AR01 Abandonment of patent right to avoid double patenting

According to article 9 of the patent law and article 13 of the detailed rules for the implementation of the patent law: 98116800 of the invention patents in the current issue of authorization announcement, and at the same time corresponding to the 98240135.3 utility model patent to be given up, and in the 19 volume of the 16 issue of the new type of communique on the patent right to abandon the announcement.

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