CN1303348C - Conical surface hard seal ball valve - Google Patents
Conical surface hard seal ball valve Download PDFInfo
- Publication number
- CN1303348C CN1303348C CNB2004100529793A CN200410052979A CN1303348C CN 1303348 C CN1303348 C CN 1303348C CN B2004100529793 A CNB2004100529793 A CN B2004100529793A CN 200410052979 A CN200410052979 A CN 200410052979A CN 1303348 C CN1303348 C CN 1303348C
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- Prior art keywords
- ball core
- ball
- valve
- sealing surface
- core
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- Expired - Fee Related
Links
- 238000007789 sealing Methods 0.000 claims abstract description 25
- 238000012856 packing Methods 0.000 claims description 6
- 238000003825 pressing Methods 0.000 claims description 5
- 239000002184 metal Substances 0.000 claims description 3
- 229910052755 nonmetal Inorganic materials 0.000 claims description 3
- 239000002002 slurry Substances 0.000 abstract description 2
- 239000000463 material Substances 0.000 description 3
- 229910001220 stainless steel Inorganic materials 0.000 description 2
- 239000010935 stainless steel Substances 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 239000010425 asbestos Substances 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 210000004907 gland Anatomy 0.000 description 1
- 239000010439 graphite Substances 0.000 description 1
- 229910002804 graphite Inorganic materials 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 229910052895 riebeckite Inorganic materials 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
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Abstract
The present invention discloses a conical surface hard seal ball valve which comprises a valve body. A ball core is arranged in the valve body and is respectively connected with an upper valve rod and a lower valve rod. An elastic washer and a press plate are arranged between a valve seat and the valve body, and the sealing surface of the ball core and the sealing surface of the valve seat, which is matched with the sealing surface of the ball core are conical surface structures. The upper valve rod and the lower valve rod form the rotating shaft of the ball core, the rotating shaft of the ball core is respectively provided with an eccentric center which is opposite to the sealing surface of the ball core and is along the axial direction of the sealing surface of the ball core and an eccentric center which is perpendicular to the radial direction of the rotating shaft of the ball core. The present invention is a hard seal structure, has the advantages of high temperature and high pressure resistance, wear resistance, etc., and can be used as block valves of a high-temperature and high-pressure pipeline and a pipeline of easily worn slurry media, or control valves of pressure and flow.
Description
Technical field
The present invention relates to a kind of ball valve, particularly a kind of conical surface hard seal ball valve.
Background technique
Existing hard seal ball valve can be divided into two classes from motion principle: a class is only by the roating sphere core ball valve is in to open or close the position; Another kind of is to need just can make ball valve be in out the position by lifting and roating sphere core, otherwise ball valve just can be in off-position.Chinese patent ZL01219534.0 and ZL01212711.6 provide two kinds of single eccentric semi-spherical type hard seal ball valves, Chinese patent ZL98217043.2 provides a kind of off-centre to put in order the ball-type hard seal ball valve, and Chinese patent ZL01247128.3 provides the high-temperature wearable ball valve of a kind of ball core center with the rotating shaft centres.No matter above-mentioned ball valve is hemisphere type or whole ball-type, its ball core sealing surface all is a spheric structure, no matter and ball core rotating shaft core be and ball core centres or off-centre, its motion principle all is the same, promptly by the roating sphere core make ball valve be in out the position or off-position.Chinese patent ZL97234488.8 provides a kind of awl core to promote and has forced the self-align ball valve of hard sealing, and its ball core sealing surface is a cone structure, and the ball core needed the motion of two steps when this ball valve was opened, and promptly promotes ball core and then roating sphere core earlier.Above-mentioned several existing hard seal ball valve or complex structure, otherwise manufacture difficulty is big, makes the sealability poor stability.
Summary of the invention
The purpose of this invention is to provide a kind of conical surface hard seal ball valve.
It comprises valve body, be provided with the ball core in the valve body, the ball core joins with upper valve rod, lower valve rod respectively, be provided with elastic washer, pressing plate between valve seat and the valve body, ball core sealing surface and the sealing surface of seat that matches mutually with it thereof are all cone structure, upper valve rod and lower valve rod are formed the rotatingshaft of ball core, and ball core rotatingshaft respectively has an off-centre with respect to ball core sealing surface along ball core sealing surface axial direction with perpendicular to the radial direction of ball core rotatingshaft.
Patent of the present invention is a hard sealing structure, has high temperature high voltage resistant, advantage such as wear-resisting, can be used as high-temperature and pressure pipeline, slurry medium pipeline block valve easy to wear or pressure, flow control valve.
Description of drawings
Fig. 1 is the conical surface hard seal ball valve schematic representation of hemisphere type ball cored structure, among the figure: left flange 1, pressing plate 2, left flange seal pad 3, valve seat 4, elastic washer 5, valve body 6, upper valve rod axle sleeve 7, upper valve rod 8, filler 9, Gland 10, right flange seal pad 11, ball core 12, lower valve rod 13, bottom pad 14, bottom 15, right flange 16;
Fig. 2 is the A-A sectional view of Fig. 1;
Fig. 3 is the conical surface hard seal ball valve schematic representation of whole ball-type ball cored structure.
Embodiment
Conical surface hard seal ball valve comprises valve body 6, is provided with ball core 12 in the valve body, and the ball core joins with upper valve rod 8, lower valve rod 13 respectively, is provided with elastic washer 5, pressing plate 2 between valve seat 4 and the valve body 6; Ball core 12 sealing surfaces and valve seat 4 sealing surfaces that match mutually with it thereof are all cone structure, upper valve rod 8 and lower valve rod 13 formed the rotatingshaft of ball cores 12, and ball core 12 rotatingshafts respectively have an off-centre with respect to ball core 12 sealing surfaces along ball core 12 sealing surface axial directions with perpendicular to the radial direction of ball core 12 rotatingshafts.
Said ball core is hemisphere type or whole ball-type.Elastic washer 5 is O type, C type, U type, V-type metallic elastic packing ring, metal winding packing ring or nonmetal elastic washer.The material of metallic elastic packing ring is a stainless steel, and the material that metal twines packing ring is the composite material of stainless steel and graphite or asbestos, and the material of nonmetal elastic washer is rubber, plastics.
As Fig. 1, shown in Figure 3, valve seat 4 and ball core 12 sealing surfaces are all the conical surface in the structure of the present invention, and valve seat 4 is pressed on the elastic washer 5, and elastic washer 5 is pressed on the valve body 6 again, and valve seat 4 and elastic washer 5 are fixed in the valve body 6 by pressing plate 2 or silk braid.Valve seat 4 is circumferentially with leaving the gap between the valve body 6, so that valve seat 4 can be free movable during assembling.Upper valve rod 8 and lower valve rod 13 are formed the rotatingshaft of ball core 12, ball core 12 rotatingshafts have an eccentric e1 with respect to ball core 12 sealing surfaces along ball core 12 sealing surface axial directions, and ball core 12 rotatingshafts have another eccentric e2 (as Fig. 2) in the radial direction perpendicular to ball core 12 rotatingshafts.Two off-centre of ball core 12 rotatingshafts have cam effect when making the motion of ball core, close tighter and tighter during valve closing, can effectively guarantee the sealing of valve.
Claims (3)
1. conical surface hard seal ball valve, it comprises valve body (6), be provided with ball core (12) in the valve body, the ball core respectively with upper valve rod (8), lower valve rod (13) joins, be provided with elastic washer (5) between valve seat (4) and the valve body (6), pressing plate (2), it is characterized in that: ball core (12) sealing surface and valve seat (4) sealing surface that matches mutually with it thereof are all cone structure, upper valve rod (8) and lower valve rod (13) are formed the rotatingshaft of ball core (12), and ball core (12) rotatingshaft respectively has an off-centre with respect to ball core (12) sealing surface along ball core (12) sealing surface axial direction with perpendicular to the radial direction of ball core (12) rotatingshaft.
2. according to right 1 described a kind of conical surface hard seal ball valve, it is characterized in that said ball core is hemisphere type or whole ball-type.
3. according to right 1 described a kind of conical surface hard seal ball valve, it is characterized in that said elastic washer (5) twines packing ring or nonmetal elastic washer for O type, C type, U type, V-type metallic elastic packing ring, metal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100529793A CN1303348C (en) | 2004-07-15 | 2004-07-15 | Conical surface hard seal ball valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100529793A CN1303348C (en) | 2004-07-15 | 2004-07-15 | Conical surface hard seal ball valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1587763A CN1587763A (en) | 2005-03-02 |
| CN1303348C true CN1303348C (en) | 2007-03-07 |
Family
ID=34602682
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2004100529793A Expired - Fee Related CN1303348C (en) | 2004-07-15 | 2004-07-15 | Conical surface hard seal ball valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1303348C (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100371635C (en) * | 2005-12-01 | 2008-02-27 | 浙江成达特种阀门厂 | Scraper type two-way high-temperature metal hard-sealed ball valve |
| CN103603965A (en) * | 2013-12-04 | 2014-02-26 | 天津富赛克流体控制设备有限公司 | Up-mounted C-shaped ball valve |
| CN104565425A (en) * | 2015-01-05 | 2015-04-29 | 应建忠 | C-shaped four-eccentric slurry pump control valve |
| CN107387798A (en) * | 2017-08-09 | 2017-11-24 | 湖北泰和石化设备有限公司 | Upper dress formula full-bore elastic hard sealing high temperature corrosion-resisting fused salt two-way valve |
| CN113864479A (en) * | 2021-10-12 | 2021-12-31 | 欧维克集团有限公司 | Bidirectional hard seal ball valve |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4318420A (en) * | 1979-10-04 | 1982-03-09 | T. K. Valve Limited | Ball valves |
| JPH07229570A (en) * | 1994-02-21 | 1995-08-29 | Kowa Kogyosho:Kk | Ball valve device |
| CN2307963Y (en) * | 1997-08-15 | 1999-02-17 | 赵紫光 | Double-eccentric hemisphere valve |
| CN2319639Y (en) * | 1997-05-07 | 1999-05-19 | 李岳甫 | Cone core lifting forced hard sealed self-positioning ball valve |
| CN2337364Y (en) * | 1998-07-14 | 1999-09-08 | 浙江成达特种阀门厂 | Eccentric metal hard sealing ball valve |
| CN2365469Y (en) * | 1999-04-08 | 2000-02-23 | 明赐东 | Eccentric coronary small size ball valve |
| CN2469269Y (en) * | 2001-03-09 | 2002-01-02 | 赵紫光 | Single eccentric semi-spherical valve used for high temp. medium |
| CN2490375Y (en) * | 2001-07-30 | 2002-05-08 | 自贡市地佩尔阀门有限公司 | High-temp. fixed ball valve |
| CN2753928Y (en) * | 2004-07-15 | 2006-01-25 | 浙江大学 | Conical-surface hard-sealed ball valve |
-
2004
- 2004-07-15 CN CNB2004100529793A patent/CN1303348C/en not_active Expired - Fee Related
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4318420A (en) * | 1979-10-04 | 1982-03-09 | T. K. Valve Limited | Ball valves |
| JPH07229570A (en) * | 1994-02-21 | 1995-08-29 | Kowa Kogyosho:Kk | Ball valve device |
| CN2319639Y (en) * | 1997-05-07 | 1999-05-19 | 李岳甫 | Cone core lifting forced hard sealed self-positioning ball valve |
| CN2307963Y (en) * | 1997-08-15 | 1999-02-17 | 赵紫光 | Double-eccentric hemisphere valve |
| CN2337364Y (en) * | 1998-07-14 | 1999-09-08 | 浙江成达特种阀门厂 | Eccentric metal hard sealing ball valve |
| CN2365469Y (en) * | 1999-04-08 | 2000-02-23 | 明赐东 | Eccentric coronary small size ball valve |
| CN2469269Y (en) * | 2001-03-09 | 2002-01-02 | 赵紫光 | Single eccentric semi-spherical valve used for high temp. medium |
| CN2490375Y (en) * | 2001-07-30 | 2002-05-08 | 自贡市地佩尔阀门有限公司 | High-temp. fixed ball valve |
| CN2753928Y (en) * | 2004-07-15 | 2006-01-25 | 浙江大学 | Conical-surface hard-sealed ball valve |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1587763A (en) | 2005-03-02 |
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| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
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| 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 |