CN1193171C - Enclosed integral polyurethane blade wheel and mould for making it - Google Patents
Enclosed integral polyurethane blade wheel and mould for making it Download PDFInfo
- Publication number
- CN1193171C CN1193171C CNB001123394A CN00112339A CN1193171C CN 1193171 C CN1193171 C CN 1193171C CN B001123394 A CNB001123394 A CN B001123394A CN 00112339 A CN00112339 A CN 00112339A CN 1193171 C CN1193171 C CN 1193171C
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- China
- Prior art keywords
- mould
- blade wheel
- polyurethane
- blade
- impeller
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- Expired - Fee Related
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Abstract
The present invention relates to a closed type integral polyurethane blade wheel and a mould for making the closed type integral polyurethane blade wheel. An upper cover plate, a lower cover plate and blades of the closed type blade wheel are directly cast by polyurethane, and the blade wheel is in integral structure. The mould used for casting operation is a combined mould made from an ordinary iron body and material which is easily smashed, demould operation can be carried out, and the cost is low. The closed type integral polyurethane blade wheel cast by the mould has the advantages of no need of a frame, high integral strength, abrasion resistance and long service life. The service life of the closed type integral polyurethane blade wheel is 2 to 3 times as long as the service life of an alloy cast iron blade wheel. In addition, the mass of the polyurethane is light, the power consumption is low in operation, electricity is saved by about one fifth, the production cost is reduced, and the installation and the maintenance of the blade wheel are very convenient.
Description
Technical field
The present invention relates to a kind of double shrouded wheel and make the mould of this impeller.
Technical background
The mortar pump, the double shrouded wheel that uses in the slag stock pump is had relatively high expectations to corrosion and wear resistance wearability, usually this impeller is made one with alloy cast iron, but be subjected to the influence of alloy cast iron wear resistance, its working life is shorter, generally can only use 4 months, and the alloy cast iron impeller weight is heavy, power consumption in service is big, along with material the most wear-resisting in the macromolecular material--the extensive use of-urethane rubber, people attempt to replace alloy cast iron with urethane rubber, construct impeller framework with alloyed steel during concrete the making, by polyurethane with upper cover plate, lower cover plate, each blade and skeleton cast bonding.Owing to there is Steel Skeleton, impeller in use, be subjected to the collision of material conveying, be easy to generate perforation between skeleton and polyurethane part, thereby cause separating between skeleton and the polyurethane body, final layering comes off, cause line clogging, have a strong impact on the use of polyurethane impeller, so for a long time, the decide whole double shrouded wheel of material class of polyurethane never occurs.
Summary of the invention
The present invention is just in order to overcome above-mentioned shortcoming, provides that a kind of abrasion resistance is higher, long service life, the low exoskeletal integrity polyurethane double shrouded wheel of power consumption.
Another object of the present invention is to provide a kind of mould that is used to make this integrity double shrouded wheel.
The design of the present invention's first purpose is to omit impeller framework fully, becomes the integrity impeller with cast polyurethane.Specifically, a kind of double shrouded wheel comprises upper and lower cover plate, a plurality of blade and alloy cast iron nut, it is characterized in that the upper and lower cover plate of described impeller, blade form by the direct cast of polyurethane, and impeller is integrity on structure.Polyurethane double shrouded wheel once-cast forms, middle exoskeletal, alloy cast iron nut outer ring is provided with groove or is designed to gear shape, to improve the cohesive force between alloy cast iron nut and the cast polyurethane body, thereby strengthen the bulk strength of impeller, shock-resistant in using process, do not have delamination.
The moulding of integrity polyurethane double shrouded wheel pattern tool.Compacting or casting are generally adopted in the moulding of double shrouded wheel in the prior art, and the mould of employing has detachable or disposable mould.If with the whole double shrouded wheel of cast polyurethane, because the restriction of blade wheel structure, be difficult to the demoulding behind the casting complete, be not suitable for detachable iron mould with the compacting impeller, but also be not suitable for disposable mould with employing in the casting, the one, because impeller of every cast, all need destroy mould one time, the cost height, in addition, disposable mould all is to be made by the friability material, and it is yielding in the cast polyurethane process, bring difficulty to pouring operation, this also is the reason that does not occur integrity polyurethane double shrouded wheel why for a long time.The present invention in conjunction with the characteristics of above-mentioned two kinds of moulds, uses a kind of modular mold when the cast impeller, reaching can demoulding cost and low result.Specifically, a kind of cast integral polyurethane double shrouded wheel mould, combine by upper and lower cover sheet metal forming body, blade and channel forming body and outer ring fixed body bonding, it is characterized in that upper and lower cover sheet metal forming body and outer ring fixed body are common iron bodies, blade and channel forming body are made by easy smashing property material.Described easily smashing property material refers generally to conventional ceramic, gypsum, silicone jelly etc.Peripheral iron mould is more easily realized the demoulding, again can be well fixing pour mass, in casting process, avoid distortion, middle blade and channel forming mould are made by easy smashing property material, smash after cast finishes, to finish the moulding of integrity impeller.This modular mold, very practical in cast polyurethane integrity impeller, cost is relatively low, again easy operating.
Owing to adopt modular mold cast polyurethane impeller, impeller is integrity on structure, greatly improved impeller intensity, exoskeletal impeller does not have peels off phenomenon, because the wear resistance that polyurethane itself has, improved the working life of impeller, be alloy cast iron impeller working life 2-3 doubly, in addition, the polyurethane light weight, the impeller that impeller weight is made than alloy cast iron is light by 5/6ths, power consumption in service is low, and saving power is about 1/5th, has reduced cost of production, because this impeller weight is light, install, overhaul also very convenient simultaneously.
Embodiment
Make the formed body mould of structure double shrouded wheel blade and passage by conventional ceramic (also can by gypsum or silicone jelly), on, the formed body mould of lower cover plate and outer ring fixed body mould are common iron bodies, above-mentioned part bonding is combined into impeller and waters molding jig, mold center puts into the alloy cast iron nut that the outer ring has groove or gear shape, pouring polyurethane into combined mould pours into a mould, finish after the fluidisation oven dry, sloughing outer ring fixed body mould reaches, lower cover plate formed body mould, smash blade and channel forming mould with external force, can obtain the integral polyurethane double shrouded wheel.
Claims (7)
1. a double shrouded wheel comprises upper and lower cover plate, a plurality of blade and alloy cast iron nut, it is characterized in that the upper and lower cover plate of described impeller, blade form by the direct cast of polyurethane, and impeller is integrity on structure.
2. impeller according to claim 1 is characterized in that alloy cast iron nut outer ring is provided with groove.
3. impeller according to claim 1 is characterized in that alloy cast iron nut outer ring is arranged to gear shape.
4. pour into a mould integral polyurethane double shrouded wheel mould for one kind, combine by upper and lower cover sheet metal forming body, blade and channel forming body and outer ring fixed body bonding, it is characterized in that upper and lower cover sheet metal forming body and outer ring fixed body are common iron bodies, blade and channel forming body are made by easy smashing property material.
5. mould according to claim 4 is characterized in that blade and channel forming body are made by conventional ceramic.
6. mould according to claim 4 is characterized in that blade and channel forming body are made by gypsum.
7. mould according to claim 4 is characterized in that blade and channel forming body are made by silicone jelly.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB001123394A CN1193171C (en) | 2000-06-09 | 2000-06-09 | Enclosed integral polyurethane blade wheel and mould for making it |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB001123394A CN1193171C (en) | 2000-06-09 | 2000-06-09 | Enclosed integral polyurethane blade wheel and mould for making it |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1328217A CN1328217A (en) | 2001-12-26 |
| CN1193171C true CN1193171C (en) | 2005-03-16 |
Family
ID=4582204
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB001123394A Expired - Fee Related CN1193171C (en) | 2000-06-09 | 2000-06-09 | Enclosed integral polyurethane blade wheel and mould for making it |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1193171C (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102005031589A1 (en) * | 2005-07-06 | 2007-01-11 | Schaeffler Kg | Wasserpumpenflügelrad |
| CN104235076A (en) * | 2013-06-18 | 2014-12-24 | 陈存东 | Polyurethane inlaid injection and coating techniques applied to pump and pump parts |
-
2000
- 2000-06-09 CN CNB001123394A patent/CN1193171C/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN1328217A (en) | 2001-12-26 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20050316 |