CN2816435Y - Plastic-lining centrifugal pump - Google Patents
Plastic-lining centrifugal pump Download PDFInfo
- Publication number
- CN2816435Y CN2816435Y CN 200520073184 CN200520073184U CN2816435Y CN 2816435 Y CN2816435 Y CN 2816435Y CN 200520073184 CN200520073184 CN 200520073184 CN 200520073184 U CN200520073184 U CN 200520073184U CN 2816435 Y CN2816435 Y CN 2816435Y
- Authority
- CN
- China
- Prior art keywords
- lining
- pump
- plastic
- volute
- inducer
- 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
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Abstract
The utility model relates to the improvement of a plastic-lining centrifugal pump body moulded by metal, particularly to a plastic-lining centrifugal pump body, wherein the depth of the lower part of a pump centrifugal chamber is close to or larger than the diameter of the smallest position of a pump inlet. The utility model is characterized in that the metal pump body is formed by the abutting joint and the combination of an inlet section and the centrifugal chamber with two side walls. The moulding lining plastic layer is an integral jointless structure with the inlet section. Consequently, the opening at the front end of the centrifugal chamber is enlarged. The utility model is not only favorable to the placement and the installation of inner lining decomposed molds, but also can accommodate lining molds. After the inlet section of the pump and the centrifugal chamber are assembled into a whole, the molding lining can be performed. The molding lining layer is still in a jointless integral structure, which has no combination surface. Therefore, the leakage can not occur to the utility model. The utility model provides convenience for molding lining, and the depth of the lower part of the pump centrifugal chamber is close to or larger than the diameter of the smallest position of the pump inlet.
Description
Technical field
Model utility is about the improvement to metal mold pressing plastic-lining centrifugal pump body, relate in particular to a kind of pump volute bottom degree of depth near or greater than the plastic-lining centrifugal pump body of the minimum place of pump inlet diameter.
Background technique
People are the corrosion resistant that solves pump and/or wear-resisting, usually at metal pump intracoelomic cavity overcurrent wall by hot moulding method lining one deck plastic layer, ultra-high molecular weight polyethylene for example.Existing metallic plastic-lining pump housing structure is at the bulk metal pump housing 1 internal surface mold pressing lining plastic layer 2 as shown in Figure 1.And pump housing mold pressing lining lining mould needs to put into the pump chamber volute from pump inlet, and combination back mold pressing lining.Yet for some special pump housings, little than the pump volute bottom degree of depth as the minimum place of pump inlet diameter, the lining mold height that can cause decomposition is greater than this lowest calibre, and mould just is difficult to put into the pump chamber volute by import, and combination forming.Therefore this type of pump housing mold pressing lining moulds and becomes a difficult point, more segment the pattern piece if the decomposition and combination mould further carefully resolved into, though can satisfy mould is put into the pump chamber volute by import, increased Mould Machining and combination difficulty, actual inadvisable in the production.
For solving the difficulty of lining complexity, difficulty, people propose the pump housing is decomposed lining structure respectively, as described in Chinese patent 02264591.8, the pump housing are axially resolved into the volute and the rear pump cover composite structure of front pump cover, band runner.Though yet this structure has made things convenient for the mold pressing lining, backing layer becomes the non-integral composite structure, certainly exists more assembly knot seam, secondly seam might cause leakage like this, especially at pump high pressure position,, this structure has also increased the Pump Body Parts number, thereby can cause increasing manufacture cost.
Summary of the invention
The purpose of model utility is to overcome the deficiency of above-mentioned prior art, a kind of little pumping hole is provided but does not need the somatotype mould segmented again to separate, and can conveniently mould be put into pump housing volute chamber and carry out the plastic-lining centrifugal pump body that the mold pressing lining is moulded.
The model utility purpose realizes, the main improvement is to be that inducer separates composite structure with being with two sidewall volutes with former complete metal pump structural reform, the pump inlet section is separated with volute, equal to have enlarged placement die inlet diameter, thereby can make the mould that originally can not put into conveniently put into volute and combination, make the pump housing of these difficult mold pressing linings can adapt to the mold pressing lining, and the mold pressing lining still is complete integral seamless structure.Specifically, model utility plastic-lining centrifugal pump body, form by the metal pump housing and mold pressing plastic lining layer, it is characterized in that the said metal pump housing by inducer be with two sidewall volutes to dock to combine, said mold pressing lining plastic layer is the integral seamless structure of band inducer.
For making the volute inlet openings big as far as possible, a kind of better is that inducer separates combination by volute connection root with volute.The combination of inducer and volute, a kind of better mode is to make inducer be the cover inserting structure to be connected with the volute sidewall, is to make the pump inlet section insert the volute sidewall opening when promptly making up, and this Placement one can enlarge the volute opening, two these kinds cover insert group closes, and also helps the raising of both combined strengths.For improving socket intensity, said inducer with adopt independent casting respectively with the volute of two sidewalls, and leave link at inducer and volute sidewall connecting part respectively, and being provided with the connection socket joint cover of protrusion as volute sidewall parting plane, the fastener rings that Duan Youyu socket joint cover cooperates is inserted in pump inlet.
In addition, for conveniently making up and strengthening both in conjunction with soundness, inducer and volute junction plane are respectively equipped with complementary involutory step, and this structure one is convenient butt joint location, and the 2nd, avoid junction plane on same plane, to improving the junction plane stable degree positive role is arranged.
Inducer also can be processed with interior concave ring groove towards the pump chamber side end face, can make lining material infiltrate concave ring groove in this when lining, and this structure has strengthened combining of lining and the metal pump housing, separates with the pump housing positive role is arranged preventing inside liner.
Model utility metal centrifugal pump body is owing to adopt inducer and be with two sidewall volute split composite structures, thereby make the pump housing that some imports are narrow and small, it is big that its volute open front becomes, the placement and the installation that have made things convenient for liner to decompose mould, separate and needn't again mould be segmented again, improved the simplification of small inlet pump mold pressing lining.The mold pressing lining is again to carry out after the combination of inducer and volute in addition, so pump housing mold pressing lining be complete overall structure still, and backing layer does not have combined interface, has avoided lining to have the knot seam again and may cause leakage, damages backing layer.The model utility structure for some volute bottom degree of depth near or mould greater than the minimum place of pump inlet diameter centrifugal pump body mold pressing lining easy, practical way be provided.
Below in conjunction with an embodiment, further specify model utility.
Description of drawings
Fig. 1 is the prior art structural representation.
Fig. 2 is a model utility example structure schematic representation.
Fig. 3 moulds schematic representation for Fig. 2 mold pressing lining.
Embodiment
Embodiment: referring to Fig. 2,3, model utility plastic-lining centrifugal pump body combines (cleaved facet is positioned at the inducer bottom) by casting pump inlet section 3 respectively and inserting butt joint with volute 1 cover of two sidewalls, volute sidewall parting plane is provided with the connection socket joint cover 11 of protrusion, the fastener rings 10 that Duan Youyu socket joint cover cooperates is inserted in pump inlet, two junction has complementary volume boss rank 8, inducer pump chamber side end face is processed with interior concave ring groove 9, both are plug-in type and connect, and by the bolton connection, the mold pressing lining has integral seamless plastics lining 2 in the combination back.
When lining is moulded, to decompose lining mold from the open front that enlarges respectively and put into volute, and be combined into whole lining mould 4, lay fixing lining at after-opening and mould holder mould 7, then inducer 3 and volute 1 cover is inserted and dock and fastening fixing with screw, add lining barrel 5 in pump inlet section 3 outsides, placement serves as a contrast mould 6 in the pump discharge, after finishing the lining mold placement, obtain integral plastic lined layer 2 by the mold pressing of common mold pressing lining method.After lining is finished, unload lining from the rear portion and mould holder mould 7, take out combined mould 4 respectively, pull down outer casing drum 5 and pump discharge lining mould 6, promptly get complete mold pressing backing layer.
Claims (5)
1, plastic-lining centrifugal pump body is made up of the metal pump housing and mold pressing plastic lining layer, it is characterized in that the said metal pump housing by inducer be with two sidewall volutes to dock to combine, said mold pressing lining plastic layer is the integral seamless structure of band inducer.
2,, it is characterized in that inducer connects root by volute and separates combination with volute according to the described plastic-lining centrifugal pump body of claim 1.
3, according to claim 1 or 2 described plastic-lining centrifugal pump bodies, it is characterized in that volute sidewall parting plane has the connection socket joint cover of protrusion, the fastener rings that Duan Youyu socket joint cover cooperates is inserted in pump inlet, and both are plug-in type and connect.
4,, it is characterized in that inducer and volute sidewall junction surface respectively have complementary positioning step according to the described plastic-lining centrifugal pump body of claim 3.
5, according to claim 1,2 or 4 described plastic-lining centrifugal pump bodies, it is characterized in that inducer has interior concave ring groove towards the pump chamber side end face.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520073184 CN2816435Y (en) | 2005-06-29 | 2005-06-29 | Plastic-lining centrifugal pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520073184 CN2816435Y (en) | 2005-06-29 | 2005-06-29 | Plastic-lining centrifugal pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2816435Y true CN2816435Y (en) | 2006-09-13 |
Family
ID=36996244
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520073184 Expired - Lifetime CN2816435Y (en) | 2005-06-29 | 2005-06-29 | Plastic-lining centrifugal pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2816435Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101832272A (en) * | 2009-03-10 | 2010-09-15 | 格伦德福斯管理联合股份公司 | Multi-stage centrifugal pump assembly |
| CN111356842A (en) * | 2019-01-25 | 2020-06-30 | 李相璇 | Can prevent shell of distortion and include its pump |
| JP2021516306A (en) * | 2019-01-25 | 2021-07-01 | ソン リ，サン | Casing that can prevent twisting and pumps that include it |
-
2005
- 2005-06-29 CN CN 200520073184 patent/CN2816435Y/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101832272A (en) * | 2009-03-10 | 2010-09-15 | 格伦德福斯管理联合股份公司 | Multi-stage centrifugal pump assembly |
| US8568093B2 (en) | 2009-03-10 | 2013-10-29 | Grundfos Management A/S | Multi-stage centrifugal pump assembly (bearing carrier) |
| CN101832272B (en) * | 2009-03-10 | 2014-04-09 | 格伦德福斯管理联合股份公司 | Multi-stage centrifugal pump assembly |
| CN111356842A (en) * | 2019-01-25 | 2020-06-30 | 李相璇 | Can prevent shell of distortion and include its pump |
| JP2021516306A (en) * | 2019-01-25 | 2021-07-01 | ソン リ，サン | Casing that can prevent twisting and pumps that include it |
| JP7068437B2 (en) | 2019-01-25 | 2022-05-16 | ソン リ，サン | Casing that can prevent twisting and pumps that include it |
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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 |
Expiration termination date: 20150629 Granted publication date: 20060913 |
|
| EXPY | Termination of patent right or utility model |