CN202140338U - Impeller formed by assembling and welding highly resisting cavitation corrosion stainless steel - Google Patents
Impeller formed by assembling and welding highly resisting cavitation corrosion stainless steel Download PDFInfo
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- CN202140338U CN202140338U CN201120151784U CN201120151784U CN202140338U CN 202140338 U CN202140338 U CN 202140338U CN 201120151784 U CN201120151784 U CN 201120151784U CN 201120151784 U CN201120151784 U CN 201120151784U CN 202140338 U CN202140338 U CN 202140338U
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- stainless steel
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- blade
- impeller
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Abstract
The utility model belongs to the technical field of a highly resisting cavitation corrosion pump, in particular relates to an impeller formed by assembling and welding highly resisting cavitation corrosion stainless steel. The impeller formed by assembling and welding highly resisting cavitation corrosion stainless steel comprises a cover board, a blade and a hub which are welded into a whole by direct current arc welding. In the utility model, the direct current arc welding is adopted to weld the cover board, the blade and the hub into a whole, and has the advantages that the welding process is stable, the welding quality is good and the welded impeller has high intensity. In the utility model, the blade is made of two phase stainless steel material, and the hub and the cover board are made of 304 stainless steel material, so that the impeller formed by assembling and welding the materials can meet the requirements of highly resisting cavitation corrosion and good corrosion resistance. The impeller has a simple structure, is easy to manufacture and has low manufacturing cost.
Description
Technical field
The invention belongs to high anti-cavitation erosion pump technical field, be specifically related to a kind of high anti-cavitation erosion stainless steel assembly welding impeller.
Background technique
Cavitation erosion is meant fluid under flow at high speed and variation in pressure condition, with the phenomenon of generation cavernous corrosion failure on the metal surface that fluid contacts.The characteristic of cavitation erosion is to form many tiny pits in the metal surface earlier, is expanded into the cave then gradually.Cavitation is one of major failure of centrifugal pump, and it mainly occurs in impeller blade import somewhere after a while, and cavitation makes blade surface produce pit and then damages impeller, also can cause the judder of the pump housing when serious, causes flow to interrupt the pump cisco unity malfunction.Therefore to make pump be in stable working state, solve the problem of impeller cavitation erosion with regard to needs effectively.
Summary of the invention
The purpose of this invention is to provide a kind of high anti-cavitation erosion stainless steel assembly welding impeller, the anti-cavitation erosion of this height stainless steel assembly welding impeller have the efficient height, corrosion-resistant, the anti-cavitation ability strong and advantage such as low cost of manufacture.
For realizing above-mentioned purpose, the present invention has adopted following technological scheme: a kind of high anti-cavitation erosion stainless steel assembly welding impeller, comprise cover plate, blade and wheel hub, and described cover plate, blade and wheel hub are welded as a whole through direct current arc welding.
This venting safety installations can also be able to further realization in the following manner:
Described blade is the two phase stainless steel material, and cover plate and wheel hub are 304 stainless steels.
Described cover plate, blade and wheel hub all adopt casting.
Described impeller is a double-entry impeller, and described cover plate comprises front shroud and the back shroud that is arranged on the wheel hub both sides, and described blade is installed between wheel hub and the cover plate.
Described blade is the setting of curved arc shape from the outer rim place of center to the wheel hub of wheel hub, and each blade is coiled on the wheel hub along same sense of rotation.
Described blade along perpendicular to hub spindle to direction be symmetrically distributed in the both sides of wheel hub.
The present invention compares with existing technology has following beneficial effect:
1), anti-cavitation erosion ability of the present invention is strong, one of effective measures that solve cavitation are exactly to adopt the anti-cavitation material, practice shows that the intensity of material, hardness, toughness are high more, chemical stability is good more, the performance of anti-cavitation erosion is just strong more.And the present invention adopts the two phase stainless steel material to make blade, adopts 304 stainless steels to do wheel hub and cover plate, and the impeller that forms of assembly welding can satisfy high-cavitation-resistance thus, has good anti-corrosion again.
2), the present invention adopts direct current arc welding that cover plate, blade and wheel hub are welded as a whole, have that welding process is stable, welding quality is good and weld after the impeller intensity advantages of higher.
3), the present invention is simple in structure, be easy to make and low cost of manufacture.
Description of drawings
Fig. 1 is a structural representation of the present invention;
Fig. 2 is the half sectional view of Fig. 1;
Fig. 2 A, 2B, 2C, 2D are respectively the structural representations of front shroud, wheel hub, back shroud and blade;
Fig. 3 is a welding process schematic representation of the present invention;
Positioning tool figure when Fig. 4 is the cover plate welding.
Embodiment
Like Fig. 1, shown in 2, described cover plate 20, blade 10 and wheel hub 30 are welded as a whole to obtain the anti-cavitation erosion of this height stainless steel assembly welding impeller through direct current arc welding.
Manufacture process of the present invention is following:
1), referring to Fig. 2 A, 2B, 2C, 2D: behind impeller hub 30, front shroud 20A, back shroud 20B and blade 10 independent castings, carry out roughing earlier, the processing of impeller channel side puts smooth transition in place.
2), referring to Fig. 3: the inlet diameter Φ D that presses blade 10 draws circle on wheel hub 30; Then according to the quantity Z (Z=6 in the present embodiment) of blade 10 with Φ D five equilibrium; And according to equal diversion point mounting blades 10; The edge and the wheel hub 30 of blade 10 are posted, be welded in blade 10 on the wheel hub 30 then.
3), referring to Fig. 4: all blades 10 install to positioning tool 40 on the wheel hub 30 after welding with wheel hub 30, then cover plate 20 are covered, and can guarantee that cover plate 20 is concentric with wheel hub 30, then cover plate 20 and blade 10 are welded together.
4), can accomplish by figure fine finishing at last.
The present invention will adopt impeller cover 20, wheel hub 30 and the blade 10 independent castings of different materials; The flow passage side of cover plate and wheel hub is put in place by the processing of blade axis projection; And blade is welded on the wheel hub equably, and then impeller cover is welded in the blade opposite side gets final product by blade inlet diameter Φ D and number of blade Z.The present invention not only has the high-cavitation-resistance while but also has lower manufacture cost, and the anti-cavitation erosion of the height stainless steel assembly welding blade wheel structure of manufacturing gained is simple, and reliable operation.
Claims (6)
1. one kind high anti-cavitation erosion stainless steel assembly welding impeller comprises cover plate (20), blade (10) and wheel hub (30), and it is characterized in that: described cover plate (20), blade (10) and wheel hub (30) are welded as a whole through direct current arc welding.
2. the anti-cavitation erosion of height according to claim 1 stainless steel assembly welding impeller, it is characterized in that: described blade (10) is the two phase stainless steel material, and cover plate and wheel hub are 304 stainless steels.
3. the anti-cavitation erosion of height according to claim 1 stainless steel assembly welding impeller, it is characterized in that: described cover plate (20), blade (10) and wheel hub (30) all adopt casting.
4. according to claim 1 or the anti-cavitation erosion of 2 or 3 described height stainless steel assembly welding impeller; It is characterized in that: described impeller is a double-entry impeller; Described cover plate (20) comprises front shroud (20A) and the back shroud (20B) that is arranged on wheel hub (30) both sides, and described blade (10) is installed between wheel hub (30) and the cover plate (20).
5. the anti-cavitation erosion of height according to claim 4 stainless steel assembly welding impeller; It is characterized in that: described blade (10) is the setting of curved arc shape from the outer rim place of center to the wheel hub (30) of wheel hub (30), and each blade (10) is coiled on the wheel hub (30) along same sense of rotation.
6. the anti-cavitation erosion of height according to claim 4 stainless steel assembly welding impeller, it is characterized in that: described blade (10) is along the both sides that are symmetrically distributed in wheel hub (30) perpendicular to the axial direction of wheel hub (30).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120151784U CN202140338U (en) | 2011-05-13 | 2011-05-13 | Impeller formed by assembling and welding highly resisting cavitation corrosion stainless steel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120151784U CN202140338U (en) | 2011-05-13 | 2011-05-13 | Impeller formed by assembling and welding highly resisting cavitation corrosion stainless steel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202140338U true CN202140338U (en) | 2012-02-08 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201120151784U Expired - Lifetime CN202140338U (en) | 2011-05-13 | 2011-05-13 | Impeller formed by assembling and welding highly resisting cavitation corrosion stainless steel |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202140338U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102777415A (en) * | 2012-08-10 | 2012-11-14 | 张云亮 | Centrifugal pump |
| CN103161753A (en) * | 2013-04-12 | 2013-06-19 | 上海阿波罗机械股份有限公司 | Impeller for residual heat removal pump |
| CN104259793A (en) * | 2014-08-27 | 2015-01-07 | 张家港市海工船舶机械制造有限公司 | Impeller and method for manufacturing same |
-
2011
- 2011-05-13 CN CN201120151784U patent/CN202140338U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102777415A (en) * | 2012-08-10 | 2012-11-14 | 张云亮 | Centrifugal pump |
| CN102777415B (en) * | 2012-08-10 | 2015-08-26 | 张云亮 | A kind of centrifugal pump |
| CN103161753A (en) * | 2013-04-12 | 2013-06-19 | 上海阿波罗机械股份有限公司 | Impeller for residual heat removal pump |
| CN104259793A (en) * | 2014-08-27 | 2015-01-07 | 张家港市海工船舶机械制造有限公司 | Impeller and method for manufacturing same |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Yinglang Tech Co., Ltd., Jiangsu Assignor: Hefei Huasheng Pumps Valves Co., Ltd. Contract record no.: 2012320000553 Denomination of utility model: Impeller formed by assembling and welding highly resisting cavitation corrosion stainless steel Granted publication date: 20120208 License type: Exclusive License Record date: 20120426 |
|
| C56 | Change in the name or address of the patentee |
Owner name: HEFEI HUASHENG PUMPS + VALVES CO., LTD. Free format text: FORMER NAME: HEFEI HUASHENG PUMP + VALVE CO., LTD. |
|
| CP01 | Change in the name or title of a patent holder |
Address after: Shuangfeng Economic Development Zone, Hefei city of Anhui Province Jin Huai road 231131 No. 06 Patentee after: HEFEI HUASHENG VALVE LIMITED BY SHARE LTD. Address before: Shuangfeng Economic Development Zone, Hefei city of Anhui Province Jin Huai road 231131 No. 06 Patentee before: Hefei Huasheng Pumps Valves Co., Ltd. |
|
| CX01 | Expiry of patent term |
Granted publication date: 20120208 |
|
| CX01 | Expiry of patent term |