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CN103521719B - A kind of narrow path impeller foundry goods - Google Patents

A kind of narrow path impeller foundry goods Download PDF

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Publication number
CN103521719B
CN103521719B CN201310459874.9A CN201310459874A CN103521719B CN 103521719 B CN103521719 B CN 103521719B CN 201310459874 A CN201310459874 A CN 201310459874A CN 103521719 B CN103521719 B CN 103521719B
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China
Prior art keywords
aperture
narrow
impeller
cover plate
upper cover
Prior art date
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Application number
CN201310459874.9A
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Chinese (zh)
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CN103521719A (en
Inventor
沈玉坤
黄德海
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Machinery Manufacturing Co Ltd Of Huzhou Nanfeng County
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Machinery Manufacturing Co Ltd Of Huzhou Nanfeng County
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Application filed by Machinery Manufacturing Co Ltd Of Huzhou Nanfeng County filed Critical Machinery Manufacturing Co Ltd Of Huzhou Nanfeng County
Priority to CN201310459874.9A priority Critical patent/CN103521719B/en
Publication of CN103521719A publication Critical patent/CN103521719A/en
Application granted granted Critical
Publication of CN103521719B publication Critical patent/CN103521719B/en
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Abstract

The present invention relates to a kind of narrow path impeller foundry goods, described impeller casting comprises upper cover plate, lower cover and the multiple narrow runner between upper cover plate and lower cover, the width of described narrow runner and highly all successively decreasing gently from inside to outside, the position upper cover plate of described impeller casting being positioned at each narrow runner top center offers the aperture of a band step, and described aperture is square.Structure of the present invention is simple, and effectively can improve Impeller Mass, reduces the scrappage of product, reduces costs.

Description

A kind of narrow path impeller foundry goods
Technical field
The present invention relates to a kind of narrow path impeller foundry goods.
Background technology
Hot investment casting leaf castings of wheels, due to narrower (the impeller maximum gauge φ more than 200 of the larger runner of such impeller diameter, width of flow path 5-7mm and below 5mm thereof), general this type of impeller of making first goes up two to three layers of sand and then tamped by small space fine sand remaining in runner and seal (being called stifled sand).Be generally directly do like this, as long as slurry is stained with in guarantee and upper sand puts in place, every layer of drying puts in place, and stifled sand puts in place.But whether on shell processed during sand, particularly causing three problems when doing the second third layer shell: 1. because runner is too narrow when going up sand, can't see the slurry of the inside and sand and operating and put in place, if do not have operation to put in place, the later stage pours and is easy to bleed-out water and produces knot iron; Even if 2. the operation of upper sand puts in place, because plane is large, runner is narrow, and runner inside cannot dry (ventilating not smooth); 3. narrow path impeller is all carrying out stifled sand at present, but light blocks up from water inlet and runner exit, and inside is stifled unreal, and such cast also can cause bleed-out water, forms knot iron.Because blade and runner are all curvature of space, these knot iron cannot clear in the later stage, directly caused foundry goods to scrap.
Summary of the invention
In order to solve above-mentioned technical problem, the object of this invention is to provide a kind of narrow path impeller foundry goods, this impeller casting is stained with slurry and upper sand puts in place more, and drying effect is better, and stifled sand is more solid.
In order to realize above-mentioned object, present invention employs following technical scheme:
A kind of narrow path impeller foundry goods, described impeller casting comprises upper cover plate, lower cover and the multiple narrow runner between upper cover plate and lower cover, the width of described narrow runner and highly all successively decreasing gently from inside to outside, the position upper cover plate of described impeller casting being positioned at each narrow runner top center offers the aperture of a band step, and described aperture is square.
Preferably: described aperture is fan-shaped, the impeller casting of all size is more applicable to.
The present invention, owing to have employed above-mentioned technical scheme, by offering aperture on upper cover plate, makes slurry and sand can enter the every nook and cranny of runner from aperture; There is the air of flowing to enter aperture time dry, enable which floor shell before stifled sand fully dry; During later stage sand removal process, from aperture cleaning and the sand that falls, convenient and swift.Structure of the present invention is simple, and effectively can improve Impeller Mass, reduces the scrappage of product, reduces costs.
Accompanying drawing explanation
Fig. 1 is the structural representation after the present invention finishes two or three stratotype shell.
Fig. 2 is the A-A sectional view of Fig. 1.
Fig. 3 is the sectional structure schematic diagram that the present invention finishes the stifled sand after two or three stratotype shell.
Detailed description of the invention
Below in conjunction with accompanying drawing, the specific embodiment of the present invention is made a detailed explanation.
A kind of narrow path impeller foundry goods as shown in Figure 1, Figure 2 and Figure 3, described impeller casting comprises upper cover plate 1, lower cover and the multiple narrow runner 3 between upper cover plate 1 and lower cover, the width of described narrow runner 3 and highly all successively decreasing gently from inside to outside, the position upper cover plate 1 of described impeller casting being positioned at each narrow runner 3 top center offers the aperture 2 of a band step, and described aperture 2 is square.
Weld at aperture 2 upper cover upper cover plate after casting cleaning is complete, although the later stage can produce certain work program, compared with scrap products, or proper way.The benefit being provided with aperture 2 is: when operation starching and upper sand, slurry sand 4 can enter from aperture 2, and therefore some corner operates and put in place, is also convenient to artificially observe operating result, remedies in time; Moving air enters from aperture 2, accelerates drying time and effect, is conducive to the making of later process.Also sand 5 can be poured into plug from aperture 2 when stifled sand real, make upper cover plate 1 powerful support, decrease the bleed-out water of later stage cast.When the later stage clears up, also antiquated sand can be cleared up from this aperture 2, easily and effectively.

Claims (2)

1. a narrow path impeller foundry goods, it is characterized in that: described impeller casting comprises upper cover plate (1), lower cover and is positioned at the multiple narrow runner (3) between upper cover plate (1) and lower cover, the width of described narrow runner (3) and highly all successively decreasing gently from inside to outside, the position upper cover plate (1) of described impeller casting being positioned at each narrow runner (3) top center offers the aperture (2) of a band step, and described aperture (2) is square.
2. a kind of narrow path impeller foundry goods according to claim 1, is characterized in that: described aperture (2) is fan-shaped replacement square aperture (2).
CN201310459874.9A 2013-09-29 2013-09-29 A kind of narrow path impeller foundry goods Active CN103521719B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201310459874.9A CN103521719B (en) 2013-09-29 2013-09-29 A kind of narrow path impeller foundry goods

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201310459874.9A CN103521719B (en) 2013-09-29 2013-09-29 A kind of narrow path impeller foundry goods

Publications (2)

Publication Number Publication Date
CN103521719A CN103521719A (en) 2014-01-22
CN103521719B true CN103521719B (en) 2016-01-06

Family

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Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN203081850U (en) * 2012-12-17 2013-07-24 大连福岛精密零部件有限公司 Centrifugal pump impeller of closed structure
CN203508944U (en) * 2013-09-29 2014-04-02 湖州南丰机械制造有限公司 Impeller casting with narrow paths

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19634535C1 (en) * 1996-08-27 1997-08-07 Porsche Ag Method for producing cast one-part vehicle wheel
JP2007275927A (en) * 2006-04-06 2007-10-25 Komatsu Igata Seisakusho:Kk Apparatus and method for molding shell-mold

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN203081850U (en) * 2012-12-17 2013-07-24 大连福岛精密零部件有限公司 Centrifugal pump impeller of closed structure
CN203508944U (en) * 2013-09-29 2014-04-02 湖州南丰机械制造有限公司 Impeller casting with narrow paths

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
窄流道封闭式叶轮的制壳工艺;孙延明;《特种铸造及有色合金》;20061231;第26卷(第12期);808 *

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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
C14 Grant of patent or utility model
GR01 Patent grant
CB03 Change of inventor or designer information
CB03 Change of inventor or designer information

Inventor after: Shen Yukun

Inventor after: Huang Dehai

Inventor after: Tan Min

Inventor before: Shen Yukun

Inventor before: Huang Dehai

PE01 Entry into force 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: A narrow channel impeller casting

Effective date of registration: 20230526

Granted publication date: 20160106

Pledgee: Zhejiang Deqing Rural Commercial Bank Co.,Ltd. Zhongguan sub branch

Pledgor: HUZHOU NANFENG MACHINERY MANUFACTURING Co.,Ltd.

Registration number: Y2023980041859