CN203737935U - Impeller mould casing - Google Patents
Impeller mould casing Download PDFInfo
- Publication number
- CN203737935U CN203737935U CN201420090208.2U CN201420090208U CN203737935U CN 203737935 U CN203737935 U CN 203737935U CN 201420090208 U CN201420090208 U CN 201420090208U CN 203737935 U CN203737935 U CN 203737935U
- Authority
- CN
- China
- Prior art keywords
- impeller
- mold
- casing
- formwork
- casting
- 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 - Lifetime
Links
- 238000005266 casting Methods 0.000 claims abstract description 24
- 238000009415 formwork Methods 0.000 claims description 37
- 238000000034 method Methods 0.000 claims description 13
- 229910000831 Steel Inorganic materials 0.000 abstract description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 239000010959 steel Substances 0.000 abstract description 3
- 239000007788 liquid Substances 0.000 abstract 1
- 230000003014 reinforcing effect Effects 0.000 abstract 1
- 238000005728 strengthening Methods 0.000 description 5
- 238000005495 investment casting Methods 0.000 description 3
- 238000003466 welding Methods 0.000 description 2
- 238000000576 coating method Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 238000007528 sand casting Methods 0.000 description 1
Landscapes
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The utility model discloses an impeller mould casing adopted by an inblock casting process for impellers of narrow flow passage centrifugal pumps. The impeller mold casing comprises an external mold casing (5), an internal mold casing (6) and an impeller mold (4), wherein a pouring riser (1), a pouring passage (2) and an exhaust passage (3) are formed in the external mold casing (5); casting auxiliary holes (42) are formed in the front cover plate (41) of the impeller mold (4). According to the utility model, the mold casing formed by the casting auxiliary holes (42) in the front cover plate is connected with reinforcing ribs, so that the external mold casing of the impeller mold casing, the front cover plate of the impeller mold and the internal mold casing in the flow channel of the impeller mold are connected as a whole, the overall strength of the impeller mold casing is improved, the deformation and damage of the impeller mold casing, caused by high temperature liquid steel, in the casting are reduced, the impeller yield is improved, and the production cost is reduced.
Description
Technical field
The present invention relates to a kind of manufacture of centrifugal pump, specifically relate to the impeller formwork that a kind of impeller casting technique of centrifugal pump adopts.
Background technology
At present, the casting of the impeller of Centrifugal Pumps in China adopts sand mo(u)ld or model casting mode: sand casting is to be generally applied to the impeller that outlet is larger, surface requirements is not high; Model casting (being lost wax casting) is to adopt commonplace impeller casting method.But the impeller outlet of low-flow high-lift centrifugal pump is narrow, in the time of its model casting, impeller channel form strength is lower, easily distortion, and casting difficulty is large, and percent defective is high, and economic benefit is undesirable.
Summary of the invention
The object of the invention is to overcome above-mentioned deficiency, and a kind of impeller formwork that can improve the intensity of impeller channel formwork and its impeller integral casting process that is difficult to the narrow runner centrifugal pump of distortion is adopted is provided.
Object of the present invention realizes by following technical solution: impeller formwork, comprise outer formwork, interior formwork, impeller mold, and in this outer formwork, there is cap pouring port, cast passage and exhaust passage, on the front shroud of described impeller mold, there is casting technique hole.
Adopt after the present invention, because interior formwork, outer formwork inside and outside front shroud and the runner of impeller mold are linked to be entirety, increase the bulk strength of impeller formwork, reduce distortion and the damage of high-temperature molten steel to impeller formwork in casting process, improve impeller yield rate, reduced production cost, economic benefit is obvious.
Brief description of the drawings
Below in conjunction with accompanying drawing and embodiment, the present invention is described further.
Fig. 1 is the process schematic representation of impeller formwork of the present invention and lost wax casting impeller.
Fig. 2 is the top view of impeller mold in Fig. 1 (wax-pattern).
Detailed description of the invention
Known with reference to Fig. 1, Fig. 2, the present invention be applied to low-flow high-lift centrifugal pump narrow runner centrifugal pump impeller integral casting process for (by the cap pouring port 1 of impeller formwork with form an overall process flow steps in interior cast passage 2 and exhaust passage 3 with impeller mold 4): first, each runner on the front shroud 41 of impeller mold 4 (wax-pattern) is provided with casting technique hole 42 (being generally two), in the coating process of initial (several times), progressively forms formwork connection strengthening rib, then, pour steel is first passed through cast passage 2 by the cap pouring port 1 of impeller formwork, again successively by the back shroud 43 of impeller mold 4, by the blade 44 of impeller mold 4, around front shroud 41 (and the surface of interior formwork to impeller mold 4, as shown in the arrow in Fig. 1 flows to), communicated with atmosphere by exhaust passage 3 and form an overall technical process for casting step, the formwork connection strengthening rib being formed by the casting technique hole on this front shroud 41 makes the outer formwork 5 of impeller formwork, interior formwork 6 in front shroud 41 and the runner thereof of impeller mold is linked to be entirety (one), wait cast cooling after, knock out outer formwork, interior formwork, finally make impeller finished product, now described formwork connection strengthening rib Lock-out, described casting technique hole are by electric welding repair welding (becoming impeller part of the whole).
Wherein, the casting technique hole 42 of impeller mold is on the front shroud 41 between every two blades 44, it is conducive to form formwork connection strengthening rib in lost wax casting shell process processed, and this formwork connection strengthening rib is positioned on the front shroud of the impeller mold before exhaust passage 3 and the outer formwork of the company of passing through, formwork.
Known with reference to Fig. 1, Fig. 2, be applied to the impeller formwork of the present invention that the impeller integral casting process of the narrow runner centrifugal pump of low-flow high-lift centrifugal pump adopts, comprise outer formwork 5, interior formwork 6, impeller mold (wax-pattern) 4, in this outer formwork 5, there is cap pouring port 1 (on top), cast passage 2 (at middle part) and exhaust passage 3 (in bottom, communicate with the air outside outer formwork), on the front shroud 41 of described impeller mold 4, there is casting technique hole 42.
Wherein: described cap pouring port 1, cast passage 2 and exhaust passage 3 form impeller casting cap pouring port, and cast passage 2, exhaust passage 3 communicate with impeller mold 4; Described impeller mold 4 comprises front shroud 41, back shroud 43, blade 44.
Claims (1)
1. impeller formwork, comprise outer formwork (5), interior formwork (6), impeller mold (4), in this outer formwork (5), there is cap pouring port (1), cast passage (2) and exhaust passage (3), it is characterized in that: on the front shroud (41) of described impeller mold (4), there is casting technique hole (42).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420090208.2U CN203737935U (en) | 2014-02-28 | 2014-02-28 | Impeller mould casing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420090208.2U CN203737935U (en) | 2014-02-28 | 2014-02-28 | Impeller mould casing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203737935U true CN203737935U (en) | 2014-07-30 |
Family
ID=51337799
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420090208.2U Expired - Lifetime CN203737935U (en) | 2014-02-28 | 2014-02-28 | Impeller mould casing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203737935U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103894553A (en) * | 2014-02-28 | 2014-07-02 | 浙江科尔泵业股份有限公司 | Integral impeller casting process of narrow-sprue centrifugal pump and impeller mould case |
| CN105598384A (en) * | 2016-01-29 | 2016-05-25 | 刘士超 | Precoated sand casting method for submerged pump impeller |
| CN108291556A (en) * | 2015-12-01 | 2018-07-17 | 博格华纳公司 | centrifugal pump and its radial impeller |
-
2014
- 2014-02-28 CN CN201420090208.2U patent/CN203737935U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103894553A (en) * | 2014-02-28 | 2014-07-02 | 浙江科尔泵业股份有限公司 | Integral impeller casting process of narrow-sprue centrifugal pump and impeller mould case |
| CN103894553B (en) * | 2014-02-28 | 2016-01-13 | 浙江科尔泵业股份有限公司 | The impeller integral casting process of narrow runner centrifugal pump and impeller formwork thereof |
| CN108291556A (en) * | 2015-12-01 | 2018-07-17 | 博格华纳公司 | centrifugal pump and its radial impeller |
| CN105598384A (en) * | 2016-01-29 | 2016-05-25 | 刘士超 | Precoated sand casting method for submerged pump impeller |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140730 |