CN2220554Y - Turbine casing lining plastic mould of centrifugal pump - Google Patents
Turbine casing lining plastic mould of centrifugal pump Download PDFInfo
- Publication number
- CN2220554Y CN2220554Y CN 94242592 CN94242592U CN2220554Y CN 2220554 Y CN2220554 Y CN 2220554Y CN 94242592 CN94242592 CN 94242592 CN 94242592 U CN94242592 U CN 94242592U CN 2220554 Y CN2220554 Y CN 2220554Y
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- CN
- China
- Prior art keywords
- lining
- volute
- pump
- mold
- centrifugal pump
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- 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 - Fee Related
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Abstract
The utility model relates to an improvement of a turbine casing moulding lining plastic mould of a centrifugal pump, which is characterized in that the pump outlet part is added with a moulding lining plastic pressing mould of the pump outlet and a sliding sleeve, which changes the prime single direction moulding into two direction moulding and makes up the difficulty of the turbine casing lining plastic mould with poor flowability and improves the compactness of the lining plastic. The mould of the utility model is especially suitable for the moulding lining with low melt index and poor flowability like the ultrahigh molecular weight polyethylene, etc.
Description
Model utility relates to a kind of mold of centrifugal pump volute lining tool, especially lining and melts the mould that refers to the plastics low, that flowability is poor.
Plastic centrifugal pump compression molding mould in the steel lining, normally make external mold with need lining volute, above the volute impeller cavity, increase a fixed thick sliding sleeve and pump chamber pressing mold again, a holder retaining counterdie is set in volute axis hole outer end, and keeps somewhere axis hole and pump discharge plug (as Fig. 1).When lining is moulded, the lining plastics are quantitatively added the volute chamber, after heating mould is treated the plastics fusion,, just obtain the centrifugal pump volute of complete lining after the demoulding to the pressurization of pump chamber pressing mold.Some melt the plastics that finger is high, melt fluidity is good to this kind mould for lining, still can satisfy the lining requirement.Yet for having better combination property, refer to plastics such as ultra-high molecular weight polyethylene low, the melt fluidity difference but melt, again because of centrifugal pump scroll shape complexity, especially volute pump discharge radially, the moulding of this kind single way stempressing mould lining just is difficult to obtain complete, desirable, fine and close lining, especially the lining of pump discharge part.For this reason, can only adopt method of modifying such as admixture low molecular weight polyethylene and/or fluidity improver to improve it and melt finger, increase flowability and adapt to lining moulding requirement, yet some performance index of ultra-high molecular weight polyethylene are damaged and reduced to this way.Another kind of lining forming method adopts volute and pump discharge moulding respectively, and then combination processing, so not only need increase shaping die, and complex process.The claimant just once adopted above-mentioned forming method and mould to carry out lining in the past.People know, the plastics of good combination property such as ultra-high molecular weight polyethylene, it is low that it melts finger, flowability is also poor more, yet adding other substance change improves it and melts and refer to and mobile, to reduce the excellent comprehensive performance of former plastics greatly, make the lining plastics can not give full play to its original good characteristic, must bring certain limitations affect using.
The purpose of model utility is to overcome the deficiency of above-mentioned existing centrifugal pump volute single way stempressing lining mold, and a kind of suitable mold pressing lining plastics are provided, and particularly the lining melt index is low, the centrifugal pump volute lining plastic mould of the plastics of poor mobile performance.
The model utility purpose realizes, it mainly improves is at pump discharge position lining mold pressing internal mould device of the pump discharge position of former mold pressing lining plastic mould increase, make centrifugal pump volute cavity and pump discharge position respectively at separately compression molding pressing mold mold pressing compacted under, once finish the volute lining, reduce requirement mold pressing lining plastic flow property.Specifically, model utility centrifugal pump volute lining mold tool comprises needing lining to mould the metal volute, fixed thick sliding sleeve in volute impeller cavity top and pump chamber pressing mold, the holder retaining counterdie of volute axis hole end, the pore-forming plug is characterized in that described volute pump outlet is circumscribed with locating slide sleeve and pump discharge pressing mold.Serve as a contrast when molded, impeller cavity and pump discharge are subjected to the both direction mold pressing to finish lining to mould, and it is poor to have remedied the lining plastic flow property, the deficiency of difficult moulding.
Two embodiments below in conjunction with practical full mold further specify model utility.
Fig. 1 is the prior art mold pressing lining mold structure schematic representation of signing an undertaking.
Fig. 2 is the embodiment's 1 mold pressing lining mold structure schematic representation of signing an undertaking.
Fig. 3 is the embodiment's 2 mold pressings linings mold structure schematic representation of signing an undertaking.
Fig. 4 is a kind of structural representation of pump discharge lining pressing mold.
Fig. 5 is the another kind of structural representation of pump discharge lining pressing mold.
Embodiment 1: referring to Fig. 2, make external mold with the need lining plastic-metal volute pump housing 1, at the fixed thick sliding sleeve 2 of its pump chamber upper end adjunction one diameter less than pump chamber, a pump chamber pressing mold 3 with holes that is slidingly matched with sliding sleeve is arranged in the sliding sleeve, there is the outside annulus 4 of protrusion the pressing mold upper end.Fixed thick sliding sleeve effect one is to guarantee lining plastics thickness, the 2nd, and moving for the mold pressing of pump chamber pressing mold provides the location.The annulus that protrude pressing mold upper end, be for the pressing mold mold pressing provide put in place spacing, to guarantee pump chamber bottom liner holder retaining thickness.The external counterdie 5 in volute axis hole outer end, its effect are the holder retaining to be provided and to prevent that the lining material from running outward for compression molding.Pump chamber pressing mold and counterdie are provided with a plug 6 between axially, and its effect one is to reserve volute lining axis hole, and the 2nd, moving for the pressing mold mold pressing with sliding sleeve provides the location, and the 3rd, the demoulding after exhaust and the moulding when helping the compression molding of pump chamber pressing mold.Volute pump outlet 8 (referring to Fig. 4) are circumscribed with diameter greater than pump discharge locating slide sleeve 7 and the pump discharge pressing mold 10 that links to each other with pump discharge pore-forming plug 9, and there is a screw propulsion polishing head 11 its outer end.The expansion of locating slide sleeve internal diameter mainly is to be connected the back to form a step with pump discharge, and with spacing pump discharge pressing mold, locating slide sleeve one provides the location for the mold pressing of pump discharge pressing mold, two double as pump discharge lining barrels, and three connect the screw press head.
The lining lining plastics of quantitatively packing into when moulding, heating mould, when treating the plastics fusion, respectively and/or simultaneously to pump chamber pressing mold and the pressurization of pump discharge pressing mold, the moulding recession remove the volute external piece just obtain complete, the centrifugal pump volute of dense plastic lining.
Embodiment 2: referring to Fig. 3, Fig. 5, as embodiment 1, be lining that further adapts to mobile poorer plastics and the consistency that improves lining, at the external locating slide sleeve 12 of volute pump shaft (double as barrel), change former fixedly holder retaining counterdie 5 into movable pump shaft pressing mold 13, there has been the chime rings 14 of position-limiting action the pressing mold outer end.The pump discharge pressing mold adopts U type structure, promptly is made up of pressing mold 10 and transmission pressure jacking block 15, and the pump discharge plug 9 movable U-shaped pressing molds that insert can be realized the motionless of plug or few moving in the compression molding process, more help moulding.Because three direction pressurization compression moldings more help the compression molding of mobile difference plastic lining, and the raising of consistency.
Model utility is concrete to be constituted and is not limited to the foregoing description and describes, and the described formation of embodiment is done some nonessential changes are still true uses novel protected scope, also can adopt the screw press structure as pump chamber pressing mold and movable counterdie; The pressurizing mold mode also can adopt alternate manner such as hydraulic pressure or the like.
Practical novel die is owing to adopting several directions compression-molded structures, than the prior art one direction The mold pressing lining mold, the yield rate height, wider to lining plastics adaptability, lining densification degree height, The chemistry good stability, particularly suitable is low in melting finger, the moulding of mobile difference plastic mould pressing lining, from And remedied mobile poor plastic mould pressing difficult forming deficiency, make some difficult mold pressing linings become shape Material does not need just directly moulding of modification, can give full play to original plastics performance like this.
Claims (5)
1, a kind of centrifugal pump volute lining mold tool, comprise and need lining to mould metal volute (1), the fixed thick sliding sleeve (2) and the pump chamber pressing mold (3) of volute impeller cavity top, the holder retaining counterdie (5) of volute axis hole end, pore-forming plug (6) and (9) is characterized in that described volute pump outlet (8) is circumscribed with locating slide sleeve (7) and pump discharge pressing mold (10).
2, according to the described centrifugal pump volute lining of claim 1 mold tool, it is characterized in that said pump discharge locating slide sleeve internal diameter is greater than the pump discharge internal diameter.
3, according to claim 1 or 2 described centrifugal pump volute lining mold tools, it is characterized in that said pump discharge pressing mold has a screw press head (11) outward.
4,, it is characterized in that said holder retaining counterdie has locating slide sleeve (12) and pump shaft pressing mold (13) to form according to the described centrifugal pump volute lining of claim 3 mold tool.
5,, it is characterized in that the said pump discharge pressing mold structure that takes the shape of the letter U according to the described centrifugal pump volute of claim 4 lining mold tool.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 94242592 CN2220554Y (en) | 1994-09-13 | 1994-09-13 | Turbine casing lining plastic mould of centrifugal pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 94242592 CN2220554Y (en) | 1994-09-13 | 1994-09-13 | Turbine casing lining plastic mould of centrifugal pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2220554Y true CN2220554Y (en) | 1996-02-21 |
Family
ID=33849154
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 94242592 Expired - Fee Related CN2220554Y (en) | 1994-09-13 | 1994-09-13 | Turbine casing lining plastic mould of centrifugal pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2220554Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100513030C (en) * | 2001-11-15 | 2009-07-15 | 宜兴市张泽化工设备厂 | Plastic-lining centrifugal pump special-shaped flow passage processing device |
-
1994
- 1994-09-13 CN CN 94242592 patent/CN2220554Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100513030C (en) * | 2001-11-15 | 2009-07-15 | 宜兴市张泽化工设备厂 | Plastic-lining centrifugal pump special-shaped flow passage processing device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |