CN101509557B - Build-up welding sealing ring cast-iron butterfly valve and method for manufacturing same - Google Patents
Build-up welding sealing ring cast-iron butterfly valve and method for manufacturing same Download PDFInfo
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- CN101509557B CN101509557B CN2009100109164A CN200910010916A CN101509557B CN 101509557 B CN101509557 B CN 101509557B CN 2009100109164 A CN2009100109164 A CN 2009100109164A CN 200910010916 A CN200910010916 A CN 200910010916A CN 101509557 B CN101509557 B CN 101509557B
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- 238000007789 sealing Methods 0.000 title claims abstract description 81
- 229910001018 Cast iron Inorganic materials 0.000 title claims abstract description 53
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 14
- 238000003466 welding Methods 0.000 title claims description 62
- 238000000034 method Methods 0.000 title claims description 36
- 238000005266 casting Methods 0.000 claims abstract description 39
- 239000002184 metal Substances 0.000 claims abstract description 34
- 229910052751 metal Inorganic materials 0.000 claims abstract description 34
- 229910001220 stainless steel Inorganic materials 0.000 claims abstract description 26
- 239000010935 stainless steel Substances 0.000 claims abstract description 26
- 150000001875 compounds Chemical class 0.000 claims abstract description 13
- 229910000831 Steel Inorganic materials 0.000 claims description 42
- 239000010959 steel Substances 0.000 claims description 42
- 238000012856 packing Methods 0.000 claims description 15
- 239000000463 material Substances 0.000 abstract description 2
- 239000000203 mixture Substances 0.000 description 5
- 238000005520 cutting process Methods 0.000 description 4
- 230000008034 disappearance Effects 0.000 description 4
- 238000009434 installation Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 239000004576 sand Substances 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 239000002131 composite material Substances 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 239000004033 plastic Substances 0.000 description 2
- 229920003023 plastic Polymers 0.000 description 2
- 229920006327 polystyrene foam Polymers 0.000 description 2
- 238000001816 cooling Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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Abstract
The invention relates to a surfacing sealing ring cast iron butterfly valve and a manufacturing method thereof, comprising a cylindrical cast iron valve body with an inlet connector and an outlet connector; both sides of the valve body are respectively provided with a valve shaft seat; a valve shaft on the valve shaft seat and perpendicular to an axes of a cylinder of the valve body is arranged in the valve body; a section of the valve shaft in the valve body is connected with a cast iron butterfly plate; a butterfly plate sealing base is arranged outside the butterfly plate and is provided with a butterfly plate sealing ring; a valve body sealing base is arranged in the valve body and is provided with a valve body sealing ring matching the butterfly plate sealing ring; a sealing ring on one sealing base in the valve body sealing base or the butterfly plate sealing base is provided with a plate ring compounded on the sealing base; the plate of the plate ring is 0.5-5mm in thickness. The plate ring is cast in an endless belt of the sealing base of a cast blank during casting and is provided with a compound stainless steel metal sealing ring by surfacing. In the cast iron butterfly valve of the invention, metal sealing rings can be compounded on the butterfly plate and the valve body by surfacing, therefore, the labor and materials are saved and the cost is lower during manufacturing.
Description
Technical field
The present invention relates to the seal ring and the manufacture method thereof of a kind of cast-iron butterfly valve and manufacture method thereof, particularly a kind of cast-iron butterfly valve.
Background technique
Cast-iron butterfly valve has the cylindrical shape cast iron valve body, valve body has into and out of connection mouth, valve body both sides the valve shaft seat is arranged respectively, the perpendicular valve shaft of the axis with the valve body cylinder on the valve shaft seat is arranged in the valve body, valve shaft a section in valve body is connected with circular plate type cast iron butterfly plate, the butterfly plate excircle has the butterfly plate sealing seat, the butterfly plate seal ring is arranged on the sealing seat, the valve seal seat is arranged in the valve body, the valve seal ring that matches with the butterfly plate seal ring is arranged on the valve seal seat.The seal ring of above-mentioned cast-iron butterfly valve is rubber seal ring or the metallic packing ring that is installed in sealing seat with the method for inlaying.There is one to be metallic packing ring in the valve seal ring of metallic sealing butterfly valve and the butterfly plate seal ring.
The manufacture method of cast-iron butterfly valve includes and makes valve shaft, casting valve body and butterfly plate, making the valve shaft seat on the valve body and making sealing seat on connection mouth, the sealing seat endless belt at valve body and butterfly plate, with the method for inlaying seal ring be installed on sealing seat, at last with steps such as butterfly plate, valve body and valve shaft assembling butterfly valves.
With the method for inlaying seal ring is installed on sealing seat and will be processed rubber seal ring or metallic packing ring and installation pressure ring thereof earlier, on sealing seat, to process closure gasket groove, with screw and installation pressure ring seal ring is installed in the closure gasket groove, also will considers the sealing between installation precision and metallic packing ring and the closure gasket groove when metallic packing ring is installed.With the method for inlaying seal ring is installed on the sealing seat of cast-iron butterfly valve and is taken a lot of work, take material, expense is higher.The steel butterfly valve can be installed metallic packing ring with the method that above-mentioned usefulness is inlayed and compare with method built-up welding composition metal seal ring on sealing seat of built-up welding on sealing seat, built-up welding composition metal seal ring saving of labor, material-saving, and expense is lower.Because cast iron is difficult to welding, so cast-iron butterfly valve can not be used method built-up welding composition metal seal ring on sealing seat of built-up welding, built-up welding composition metal seal ring only is suitable for the steel butterfly valve, in the prior art, does not have the cast-iron butterfly valve of built-up welding composition metal seal ring.
Summary of the invention
The objective of the invention is in order to overcome above-mentioned deficiency saving of labor, material-saving when proposing a kind of manufacturing, build-up welding sealing ring cast-iron butterfly valve that expense is lower and manufacture method thereof.
The present invention is achieved using the following method.
Build-up welding sealing ring cast-iron butterfly valve has the cylindrical shape cast iron valve body, valve body has into, go out connection mouth, the valve body both sides have the valve shaft seat respectively, the perpendicular valve shaft of the axis with the valve body cylinder on the valve shaft seat is arranged in the valve body, valve shaft a section in valve body is connected with circular plate type cast iron butterfly plate, the butterfly plate excircle has the butterfly plate sealing seat, the butterfly plate seal ring is arranged on the butterfly plate sealing seat, the valve seal seat is arranged in the valve body, the valve seal ring that matches with the butterfly plate seal ring is arranged on the valve seal seat, having a seal ring on the sealing seat to have to be compounded in thickness on the sealing seat in valve seal seat and the butterfly plate sealing seat is 0.5～5 millimeter steel plate ring, and the compound stainless steel metal seal ring of built-up welding is arranged on the steel plate ring.
The manufacture method of built-up welding valve seal ring cast-iron butterfly valve has the following steps:
1. making valve shaft;
2. make the casting blank of butterfly plate and valve body, when making butterfly plate casting blank and valve body casting blank, press the seal ring position of cast-iron butterfly valve design, the pre-buried circular steel plate ring in relevant position in the sealing seat endless belt of a casting blank;
3. on valve body casting blank, make the valve shaft seat and into and out of connection mouth;
4. process closure gasket groove in the sealing seat endless belt of casting blank, when the closure gasket groove on the casting blank of pre-embedded steel slab ring is arranged, allow at the bottom of the closure gasket groove as much as possible circumferential surface near the steel plate ring in processing sealing seat endless belt;
5. on butterfly plate that processes closure gasket groove and valve body, make seal ring, when the closure gasket groove on the casting blank of sealing seat endless belt pre-embedded steel slab ring is made seal ring, method built-up welding at the bottom of closure gasket groove with built-up welding goes out the stainless steel metal ring, and the stainless steel metal ring of built-up welding is processed into seal ring;
6. with the butterfly plate behind the above-mentioned making seal ring with make valve body and the valve shaft of valve behind connection mouth, axle bed and the seal ring and be assembled into build-up welding sealing ring cast-iron butterfly valve.
Butterfly plate seal ring of the present invention and valve seal ring have one to be to have to cast the steel plate ring that is compounded on the sealing seat, and the compound stainless steel metal seal ring of built-up welding is arranged on the circumferential surface of steel plate ring.Be compounded in the casting blank because the steel plate ring is Bao Zhu, the stainless steel metal seal ring be built-up welding on the circumferential surface of steel plate ring, so the compound stainless steel metal seal ring of built-up welding is very firm with being connected of cast iron, built-up welding does not influence the intensity of cast-iron butterfly valve.
Of the present invention is cast iron valve, the compound stainless steel metal seal ring of method of valve body and/or the useful built-up welding of butterfly plate seal ring, and saving of labor, material-saving during manufacturing, expense is lower.
Below in conjunction with drawings and Examples, the present invention is further described.
Description of drawings
Fig. 1 is that the master of a kind of built-up welding valve seal ring cast-iron butterfly valve of proposing according to invention scheme of the present invention looks schematic representation;
Fig. 2 is the side cross-sectional schematic of Fig. 1;
Fig. 3 is the I place enlarged diagram of Fig. 2;
Fig. 4 is that the butterfly plate seal ring is the side cross-sectional schematic of the build-up welding sealing ring cast-iron butterfly valve of the compound stainless steel metal seal ring of built-up welding;
Fig. 5 is an II place enlarged diagram among Fig. 4;
Fig. 6～Fig. 9 is valve body casting blank sealing seat endless belt is cut the Fig. 1 that makes valve seal ring step again through cutting, built-up welding an I place enlarged diagram.
Embodiment
Among Fig. 1～Fig. 3, build-up welding sealing ring cast-iron butterfly valve has cylindrical shape cast iron valve body 1, valve body has into, go out connection mouth 2,3, the valve body both sides have valve shaft seat 4 respectively, 5, the perpendicular valve shaft 6 of the axis with the valve body cylinder on the valve shaft seat is arranged in the valve body, valve shaft a section in valve body is connected with circular plate type cast iron butterfly plate 7, the butterfly plate excircle has butterfly plate sealing seat 8, the butterfly plate rubber seal ring 9 that useful method of inlaying is installed on the butterfly plate sealing seat, valve seal seat 10 is arranged in the valve body, the valve seal ring 11 that matches with the butterfly plate seal ring is arranged on the valve seal seat, seal ring on the valve seal seat has the steel plate ring 12 that is compounded on the sealing seat, the steel plate thickness of steel plate ring is 0.5～5 millimeter, and the inner circumference of steel plate ring has the compound stainless steel metal seal ring 13 of built-up welding.
The valve seal ring of above-mentioned build-up welding sealing ring cast-iron butterfly valve is the compound stainless steel metal seal ring of built-up welding, and the butterfly plate seal ring is rubber seal ring or the metallic packing ring of installing with the method for inlaying.Build-up welding sealing ring cast-iron butterfly valve also can be that the butterfly plate seal ring is the compound stainless steel metal seal ring of built-up welding, and the valve seal ring is rubber seal ring or the metallic packing ring of installing with the method for inlaying.
Among Fig. 4, Fig. 5, the butterfly plate seal ring 14 of build-up welding sealing ring cast-iron butterfly valve is the compound stainless steel metal seal ring of built-up welding, and valve seal ring 15 is rubber seal ring or metallic packing ring.
The manufacture method of built-up welding valve seal ring cast-iron butterfly valve has the following steps:
1. making valve shaft;
2. the casting butterfly plate is installed rubber seal ring or metallic packing ring with the method for inlaying on butterfly plate;
3. the casting valve body during casting valve body, is pressed the valve seal ring position of cast-iron butterfly valve design, the pre-buried circular steel plate ring in relevant position in the sealing seat endless belt of valve body casting blank;
4. on valve body, make the valve shaft seat and into and out of connection mouth;
5. cut the valve seal annular groove in valve body casting blank sealing seat endless belt, allow at the bottom of the closure gasket groove as much as possible inner peripheral surface near the steel plate ring;
6. go out the stainless steel metal ring with the built-up welding at the bottom of the valve seal annular groove of built-up welding composite methods;
7. the stainless steel metal ring cutting of built-up welding is whittled into the valve body metallic packing ring;
8. with the butterfly plate behind the above-mentioned installation seal ring with make valve body and the valve shaft of valve behind connection mouth, axle bed and the built-up welding stainless steel metal seal ring and be assembled into built-up welding valve seal ring cast-iron butterfly valve.
The manufacture method of built-up welding butterfly plate sealing ring cast-iron butterfly valve has the following steps:
1. making valve shaft;
2. the casting valve body is made the valve shaft seat and into and out of connection mouth with the method for inlaying rubber seal ring or metallic packing ring is installed on valve body;
3. the casting butterfly plate during casting butterfly plate, is pressed the butterfly plate seal ring position of cast-iron butterfly valve design, the pre-buried circular steel plate ring in relevant position in the sealing seat endless belt of butterfly plate casting blank;
4. cut the butterfly plate closure gasket groove in butterfly plate casting blank sealing seat endless belt, allow at the bottom of the closure gasket groove as much as possible outer peripheral surface near the steel plate ring;
5. go out the stainless steel metal ring with the built-up welding at the bottom of the butterfly plate closure gasket groove of built-up welding composite methods;
6. the stainless steel metal ring cutting of built-up welding is whittled into butterfly plate stainless steel metal seal ring;
7. with the butterfly plate behind the above-mentioned built-up welding stainless steel metal seal ring with make valve body and the valve shaft of valve behind connection mouth, axle bed and the valve seal ring and be assembled into built-up welding valve seal ring cast-iron butterfly valve.
Casting die can be that sand mo(u)ld also can be the disappearance mould made from polystyrene foam plastics, if when the casting valve body is to use sand mo(u)ld, after making the valve body sand mo(u)ld, before the pouring molten iron, can be placed on circular steel plate ring in the sealing seat endless belt in the die cavity, the morpheme of circular steel plate ring in die cavity can match with the morpheme of the valve seal ring of butterfly valve design.If when the casting valve body is the valve body disappearance mould made from polystyrene foam plastics, can be placed on circular steel plate ring in the ring sealing base band of valve body disappearance mould when making valve body disappearance mould, the morpheme of the valve seal ring that the morpheme of circular steel plate ring in die cavity can design with butterfly valve matches.Above-mentioned steel plate ring is the annulus that narrow flat board surrounds, and when making the bigger butterfly valve of bore, the steel plate ring rigidity that diameter is bigger is very low, is not easy to keep when casting morpheme.In order to improve the rigidity of steel plate ring, being embedded in the interior sealing seat endless belt of casting die cavity light plate ring section can be flute profile.
During casting, in casting die behind the cast cast iron water, cast the semi-molten of can being heated of circular steel plate ring surface that ladle soaks, after the cooling, circular steel plate ring can combine with valve body cast iron.Cut the valve seal annular groove in valve body casting blank sealing seat endless belt, allow the inner ring surface of circular steel plate ring expose at bottom land, built-up welding goes out metal ring on the inner ring surface of the circular steel plate ring in the valve seal annular groove, again the metal ring of built-up welding is cut into the valve body metallic packing ring, the valve seal ring of built-up welding is connected very firmly with cast iron, also do not influence the intensity of cast iron valve body.
The step that Fig. 6～Fig. 9 shown in the sealing seat endless belt of the valve body casting blank pre-buried circular steel plate ring 17 in relevant position, cuts valve seal annular groove 18 in valve body casting blank sealing seat endless belt, valve seal ring 20 is made in built-up welding stainless steel metal ring 19 and cutting in the valve seal annular groove.
Claims (4)
1. build-up welding sealing ring cast-iron butterfly valve, the cylindrical shape cast iron valve body is arranged, valve body has into, go out connection mouth, the valve body both sides have the valve shaft seat respectively, the perpendicular valve shaft of the axis with the valve body cylinder on the valve shaft seat is arranged in the valve body, valve shaft a section in valve body is connected with circular plate type cast iron butterfly plate, the butterfly plate excircle has the butterfly plate sealing seat, the butterfly plate seal ring is arranged on the butterfly plate sealing seat, the valve seal seat is arranged in the valve body, the valve seal ring that matches with the butterfly plate seal ring is arranged on the valve seal seat, it is characterized in that: having a seal ring on the sealing seat to have to be compounded in thickness on the sealing seat in valve seal seat and the butterfly plate sealing seat is 0.5～5 millimeter steel plate ring, and the compound stainless steel metal seal ring of built-up welding is arranged on the steel plate ring.
2. by the described build-up welding sealing ring cast-iron butterfly valve of claim 1, it is characterized in that: the seal ring on the described valve seal seat has the steel plate ring that is compounded on the sealing seat, the inner circumference of steel plate ring has the compound stainless steel metal seal ring of built-up welding, useful method of inlaying is installed on the butterfly plate sealing seat rubber seal ring or metallic packing ring.
3. by the described build-up welding sealing ring cast-iron butterfly valve of claim 1, it is characterized in that: the seal ring on the described butterfly plate sealing seat has the steel plate ring that is compounded on the sealing seat, the excircle of steel plate ring has the compound stainless steel metal seal ring of built-up welding, useful method of inlaying is installed on the valve seal seat rubber seal ring or metallic packing ring.
4. manufacture method by the described build-up welding sealing ring cast-iron butterfly valve of claim 1 is characterized in that: have the following steps:
(1) makes valve shaft;
(2) make the casting blank of butterfly plate and valve body, when making butterfly plate casting blank and valve body casting blank, press the seal ring position of cast-iron butterfly valve design, the pre-buried circular steel plate ring in relevant position in a sealing seat endless belt that casts blank;
(3) on valve body casting blank, make valve shaft seat and into and out of connection mouth;
(4) process closure gasket groove in the sealing seat endless belt of casting blank, when the closure gasket groove on the casting blank of pre-embedded steel slab ring is arranged, allow at the bottom of the closure gasket groove as much as possible circumferential surface near the steel plate ring in processing sealing seat endless belt;
(5) on butterfly plate that processes closure gasket groove and valve body, make seal ring, when the closure gasket groove on the casting blank of sealing seat endless belt pre-embedded steel slab ring is made seal ring, method built-up welding at the bottom of closure gasket groove with built-up welding goes out the stainless steel metal ring, and the stainless steel metal ring of built-up welding is processed into seal ring;
(6) be assembled into build-up welding sealing ring cast-iron butterfly valve with making the butterfly plate behind the seal ring and making the valve body and the valve shaft of valve behind connection mouth, valve shaft seat and the seal ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100109164A CN101509557B (en) | 2009-03-30 | 2009-03-30 | Build-up welding sealing ring cast-iron butterfly valve and method for manufacturing same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100109164A CN101509557B (en) | 2009-03-30 | 2009-03-30 | Build-up welding sealing ring cast-iron butterfly valve and method for manufacturing same |
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| Publication Number | Publication Date |
|---|---|
| CN101509557A CN101509557A (en) | 2009-08-19 |
| CN101509557B true CN101509557B (en) | 2010-06-02 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2009100109164A Active CN101509557B (en) | 2009-03-30 | 2009-03-30 | Build-up welding sealing ring cast-iron butterfly valve and method for manufacturing same |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102287541A (en) * | 2011-07-22 | 2011-12-21 | 世林（漯河）冶金设备有限公司 | Sealing structure of connecting rod type cutting butterfly valve of blast furnace |
| CN102441771A (en) * | 2011-10-18 | 2012-05-09 | 天津国际机械有限公司 | Processing technique of valve parts in ball valve with hard seal structure |
| CN113202933B (en) * | 2021-06-04 | 2022-10-14 | 重庆川仪调节阀有限公司 | Multi-eccentric all-metal sealing butterfly valve sealing pair and machining method and assembling method thereof |
| CN113618334A (en) * | 2021-07-28 | 2021-11-09 | 山东亿佰通机械股份有限公司 | Machining method of butt-clamped butterfly valve |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3778028A (en) * | 1972-08-02 | 1973-12-11 | Dore Co John L | Lined butterfly valve |
| CN2630583Y (en) * | 2003-08-18 | 2004-08-04 | 铁岭阀门(集团)特种阀门有限责任公司 | Elastic sealing butterfly-valve inlaid with rolling-moulded metal sealing ring |
| CN101093024A (en) * | 2006-06-21 | 2007-12-26 | 钱兵 | Butterfly valve made from spheroidal graphite cast iron |
| CN201110386Y (en) * | 2007-07-19 | 2008-09-03 | 浙江中科阀门有限公司 | Cast iron metal hard sealing butterfly valve |
-
2009
- 2009-03-30 CN CN2009100109164A patent/CN101509557B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3778028A (en) * | 1972-08-02 | 1973-12-11 | Dore Co John L | Lined butterfly valve |
| CN2630583Y (en) * | 2003-08-18 | 2004-08-04 | 铁岭阀门(集团)特种阀门有限责任公司 | Elastic sealing butterfly-valve inlaid with rolling-moulded metal sealing ring |
| CN101093024A (en) * | 2006-06-21 | 2007-12-26 | 钱兵 | Butterfly valve made from spheroidal graphite cast iron |
| CN201110386Y (en) * | 2007-07-19 | 2008-09-03 | 浙江中科阀门有限公司 | Cast iron metal hard sealing butterfly valve |
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| CN101509557A (en) | 2009-08-19 |
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Address after: 112000 Industrial Zone, Tieling Economic Development Zone, Liaoning Patentee after: TIELING SPECIAL VALVE Corp. Address before: 112000 Tieling Liaoning Economic Development Zone Industrial Park Special Valve Co., Ltd. Patentee before: TIELING VALVE (Group) SPECIAL VALVE Co.,Ltd. |
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| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of invention: Cast iron butterfly valve with surfacing sealing ring and its manufacturing method Effective date of registration: 20221027 Granted publication date: 20100602 Pledgee: Tieling Branch of Shengjing Bank Co.,Ltd. Pledgor: TIELING SPECIAL VALVE Corp. Registration number: Y2022210000169 |
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Granted publication date: 20100602 Pledgee: Tieling Branch of Shengjing Bank Co.,Ltd. Pledgor: TIELING SPECIAL VALVE Corp. Registration number: Y2022210000169 |
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| PC01 | Cancellation of the registration of the contract for pledge of patent right | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of invention: Welding sealing ring cast iron butterfly valve and its manufacturing method Granted publication date: 20100602 Pledgee: Tieling Branch of Shengjing Bank Co.,Ltd. Pledgor: TIELING SPECIAL VALVE Corp. Registration number: Y2024210000029 |
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| PE01 | Entry into force of the registration of the contract for pledge of patent right |