CN204430198U - Ultra-large type butterfly valve inner chamber shaping core - Google Patents
Ultra-large type butterfly valve inner chamber shaping core Download PDFInfo
- Publication number
- CN204430198U CN204430198U CN201520000615.4U CN201520000615U CN204430198U CN 204430198 U CN204430198 U CN 204430198U CN 201520000615 U CN201520000615 U CN 201520000615U CN 204430198 U CN204430198 U CN 204430198U
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- CN
- China
- Prior art keywords
- core
- butterfly valve
- little
- ultra
- inner chamber
- 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 - Fee Related
Links
- 238000007493 shaping process Methods 0.000 title claims abstract description 15
- 239000004576 sand Substances 0.000 claims abstract description 16
- 238000005266 casting Methods 0.000 abstract description 5
- 239000011347 resin Substances 0.000 description 6
- 229920005989 resin Polymers 0.000 description 6
- 230000008602 contraction Effects 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000003110 molding sand Substances 0.000 description 2
- 238000005476 soldering Methods 0.000 description 2
- 238000007711 solidification Methods 0.000 description 2
- 230000008023 solidification Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000012958 reprocessing Methods 0.000 description 1
Landscapes
- Lift Valve (AREA)
Abstract
The utility model relates to a kind of ultra-large type butterfly valve inner chamber shaping core, belongs to the technical field of butterfly valve casting.Ultra-large type butterfly valve inner chamber shaping core, core entirety is in cylindrical-shaped structure, described core is put together by the little core of some circular arc, the core exterior arc surface that some little cores are put together is foundry goods forming surface, the inner arc surface of some little cores forms cylindrical cavity jointly, cylindrical cavity fills dry sand, and dry sand packed height flushes with the little core of circular arc.
Description
Technical field
The utility model relates to a kind of ultra-large type butterfly valve inner chamber shaping core, belongs to the technical field of butterfly valve casting.
Background technology
The butterfly valve of heavy caliber (bore is greater than DN1800) is due to the thickness skewness of its loop configuration, hinder molten metal in the solidification shrinkage of die cavity by the inner chamber that resin sand is shaping, and shrinkage rates is laterally with longitudinally inconsistent, therefore the normal deformability because of resin sand does not meet the free shrink of casting solidification, and cause casting dimension not reach designing requirement, thus foundry goods is caused to be scrapped.Prior art is butterfly valve casting Technology Design routinely, and Mold Making must make 5 large core boxes and two little core boxes, and external mold belongs to ultra-large type mould, and manufacturing cost is high, copies operating difficulties mechanically.By this explained hereafter product out, core cavity dimensional contraction is not returned, and causes core cavity size much, and without allowance, the soldering amount of reprocessing is comparatively large, does not have soldering to save and is worth.
Summary of the invention
The utility model object there are provided one can make the contraction of butterfly valve crucial inner chamber reach unanimity with the overall reduced scale of foundry goods, solve a control difficult problem for butterfly valve key assembling inner cavity size, guarantee is provided for obtaining qualified ultra-large type butterfly valve foundry goods, and reduce mould assembling operation easier, reduce the ultra-large type butterfly valve inner chamber shaping core of resin sand cost and Making mold expense, solve prior art Problems existing.
Above-mentioned technical purpose of the present utility model mainly solves by the following technical programs: ultra-large type butterfly valve inner chamber shaping core, core entirety is in cylindrical-shaped structure, described core is put together by the little core of some circular arc, the core exterior arc surface that some little cores are put together is foundry goods forming surface, the inner arc surface of some little cores forms cylindrical cavity jointly, cylindrical cavity fills dry sand, and dry sand packed height flushes with the little core of circular arc.The utility model proposes a kind of design con-trol technology to ultra-large type butterfly valve (bore is greater than DN1800), crucial inner chamber building core decomposes some the little cores of circular arc by a whole core and combines, exterior arc surface is foundry goods forming surface, and inner arc surface is specificly do absolutely empty.After core has fallen successively, inner chamber forms the cylindrical cavity be made up of small arc-shaped core, and after fit clearance seals between to circular arc core, the cylindrical cavity shaping toward Inner arc fills dry sand, and packed height flushes with the little core of circular arc.The utility model strengthen between the crucial inner chamber molding sand of butterfly valve foundry goods contraction deformability, solving a control difficult problem for butterfly valve key assembling inner cavity size, providing guarantee for obtaining qualified ultra-large type butterfly valve foundry goods.Decrease Mold Making cost, reduce resin sand use amount, serve effect that is energy-saving and cost-reducing, cost efficiency.
As preferably, the arc chord angle of described some little cores and highly all equal.
As preferably, the quantity of described little core is 4-8.
As preferably, described some little cores have fit clearance each other.
Therefore, the utility model has can make the contraction of butterfly valve crucial inner chamber reach unanimity with the overall reduced scale of foundry goods, solve a control difficult problem for butterfly valve key assembling inner cavity size, guarantee is provided for obtaining qualified ultra-large type butterfly valve foundry goods, and reduce mould assembling operation easier, reduce the feature such as resin sand cost and Making mold expense.
Accompanying drawing explanation
Fig. 1 is the longitudinal sectional structure schematic diagram of one of the present utility model;
Fig. 2 is cross-sectional structure schematic diagram of the present utility model.
Detailed description of the invention
Below by embodiment, and by reference to the accompanying drawings, the technical solution of the utility model is described in further detail.
Embodiment 1: as depicted in figs. 1 and 2, ultra-large type butterfly valve inner chamber shaping core, core entirety is in cylindrical-shaped structure, core is put together by 8 little cores 1 of circular arc, and the core exterior arc surface 2 that 8 little cores are put together is foundry goods forming surface, and the inner arc surface of 8 little cores forms cylindrical cavity 3 jointly, dry sand 4 is filled in cylindrical cavity 3, the packed height of dry sand 4 flushes with the little core of circular arc, the arc chord angle of 8 little cores and highly all equal, and 8 little cores have fit clearance 5 each other.
The utility model proposes a kind of design con-trol technology to ultra-large type butterfly valve (bore is greater than DN1800), and crucial inner chamber building core decomposes 8 little cores of circular arc by a whole core and combines, and exterior arc surface is foundry goods forming surface, and inner arc surface is specificly do absolutely empty.After core has fallen successively, inner chamber forms the cylindrical cavity be made up of small arc-shaped core, and after fit clearance seals between to circular arc core, the cylindrical cavity shaping toward Inner arc fills dry sand, and packed height flushes with the little core of circular arc.The utility model strengthen between the crucial inner chamber molding sand of butterfly valve foundry goods contraction deformability, solving a control difficult problem for butterfly valve key assembling inner cavity size, providing guarantee for obtaining qualified ultra-large type butterfly valve foundry goods.Decrease Mold Making cost, reduce resin sand use amount, serve effect that is energy-saving and cost-reducing, cost efficiency.
Claims (4)
1. a ultra-large type butterfly valve inner chamber shaping core, core entirety is in cylindrical-shaped structure, it is characterized in that described core is put together by the little core of some circular arc, the core exterior arc surface that some little cores are put together is foundry goods forming surface, the inner arc surface of some little cores forms cylindrical cavity jointly, cylindrical cavity fills dry sand, and dry sand packed height flushes with the little core of circular arc.
2. ultra-large type butterfly valve inner chamber shaping core according to claim 1, is characterized in that the arc chord angle of described some little cores and highly all equal.
3. ultra-large type butterfly valve inner chamber shaping core according to claim 1 and 2, is characterized in that the quantity of described little core is 4-8.
4. ultra-large type butterfly valve inner chamber shaping core according to claim 1 and 2, is characterized in that described some little cores have fit clearance each other.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520000615.4U CN204430198U (en) | 2015-01-04 | 2015-01-04 | Ultra-large type butterfly valve inner chamber shaping core |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520000615.4U CN204430198U (en) | 2015-01-04 | 2015-01-04 | Ultra-large type butterfly valve inner chamber shaping core |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204430198U true CN204430198U (en) | 2015-07-01 |
Family
ID=53598118
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520000615.4U Expired - Fee Related CN204430198U (en) | 2015-01-04 | 2015-01-04 | Ultra-large type butterfly valve inner chamber shaping core |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204430198U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106493308A (en) * | 2017-01-09 | 2017-03-15 | 浙江欧冶达机械制造有限公司 | A kind of gate valve foundry goods of low cost without rising head |
| CN111331083A (en) * | 2020-04-08 | 2020-06-26 | 厦门市佳嘉达机械有限公司 | A mould for preventing foundry goods fracture |
-
2015
- 2015-01-04 CN CN201520000615.4U patent/CN204430198U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106493308A (en) * | 2017-01-09 | 2017-03-15 | 浙江欧冶达机械制造有限公司 | A kind of gate valve foundry goods of low cost without rising head |
| CN106493308B (en) * | 2017-01-09 | 2018-06-15 | 浙江欧冶达机械制造有限公司 | A kind of gate valve casting of the low cost without riser |
| CN111331083A (en) * | 2020-04-08 | 2020-06-26 | 厦门市佳嘉达机械有限公司 | A mould for preventing foundry goods fracture |
| CN111331083B (en) * | 2020-04-08 | 2021-01-26 | 厦门市佳嘉达机械有限公司 | A mould for preventing foundry goods fracture |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 322118 Zhejiang city of Jinhua province Dongyang city Hengdian Branch Road Electronic Industrial Park No. 33 Patentee after: ZHEJIANG INNUOVO MACHINERY CO.,LTD. Address before: 322118 Zhejiang city of Jinhua province Dongyang city Hengdian Branch Road Electronic Industrial Park No. 33 Patentee before: SUFA HENGDIAN MACHINERY Co.,Ltd. CNNC |
|
| CP01 | Change in the name or title of a patent holder | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150701 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |