CN102261335A - Process for high-ductility and high-strength polyether ceramic matrix combination pump - Google Patents
Process for high-ductility and high-strength polyether ceramic matrix combination pump Download PDFInfo
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- CN102261335A CN102261335A CN2010101870511A CN201010187051A CN102261335A CN 102261335 A CN102261335 A CN 102261335A CN 2010101870511 A CN2010101870511 A CN 2010101870511A CN 201010187051 A CN201010187051 A CN 201010187051A CN 102261335 A CN102261335 A CN 102261335A
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Abstract
The invention discloses a process for a high-ductility and high-strength polyether ceramic matrix combination pump. The high-ductility and high-strength polyether ceramic matrix combination pump comprises a polyether and ceramic pump impeller, a polyether (high polymer) pump impeller, a silicon nitride pump impeller, a silicon carbide matrix composite shaft sleeve, an aluminum oxide matrix composite shaft sleeve, a pump body and a pump cover. The process comprises the following steps of: performing hot-press sintering, manufacturing a blank by using a die and sizing, and firing at high temperature; and after forming by cold pressing, baking, and demoulding for forming to manufacture a combination pump impeller of which the ceramic matrix is combined and wrapped on a surface layer of metal. The high-ductility and high-strength polyether ceramic matrix combination pump impeller is formed by cold pressing and firing; the pump body and the pump cover are formed by the cold pressing of silicon nitride, silicon carbide and aluminum oxide, are fired at the high temperature and are lined in the metal; and the hardness Rockwell hardness (HRA) of the polyether ceramic pump impeller is up to be more than or equal to 94 percent, the compression strength of silicon carbide and silicon nitride pump pieces is more than or equal 6,000 MPa at the high temperature of 350 DEG C, the hot hardness is more than or equal to 1,000 DEG C, the service life is over 50 times higher than that of cast iron, cast steel, rubber liners and austenitic stainless steel, and the cost is low, so the process is easy to popularize.
Description
(1) technical field: the present invention relates to the high-strength polyethers ceramic-base of a kind of high-ductility combined pump technological method, the pump of particularly a kind of metallurgy or the mining two phase flow that contains solid particle and the pump that contains corrosive fluid use.
(2) background technique: in containing the two phase flow of solid particle, because the inertia of solid particle is big, wearing and tearing are violent, cause the rapid wearing and tearing of pump.These especially occur in metallurgy, draw in the productions such as Huang and mine drainage.And pottery is because characteristic such as hard, wear-resisting, corrosion-resistant, but because pottery is crisp again, characteristics such as brittle fracture make and can't use on pump, will increase its impact resistance performance greatly but added the polyethers fiber, have strengthened the toughness of stupalith.Polyethers fiber and ceramic matric composite have been added and with it coating or spread upon metal or the inner and outer surface of nonmetallic material impeller, wear-resisting, the corrosion resistance characteristic on surface have promptly been increased, metal or nonmetallic material impeller toughness are arranged again, can be good at solving wear-resisting, the corrosion-resistant problem of pump.Sharply the pump of wearing and tearing makes that the life-span of pump is very of short duration, causes the waste of pump serious, and economic loss is very big, and entreprise cost increases.Present most of two-phase flow pump all is to make of stainless steel material, and the pump impeller life-span that stainless steel is made is also very limited, costs an arm and a leg.The impeller that also useful engineering plastic materials is made, but weak effect.Be coated on impeller or pump housing inner and outer surface with engineering plastics, soft not wear-resisting because of its engineering plastics hardness, in environment is abominable, use also not satisfy and produce wear-resisting needs.As seen, strengthened the working life of pump, just requiring should surface hardness height, wear-resisting, also wants flexible, also needs metal or nonmetal basal body flexible.Can take following measure to increase wear-resisting, corrosion resisting property: the hardness that increases material surface.The toughness on reinforcing material surface.Strengthen the adhesion strength of polyethers fiber and ceramic matric composite and impeller matrix.
(3) summary of the invention: the object of the present invention is to provide a kind of wear-resisting, anti-corrosive pump, pump is in the Environmental Conditions of abominable two phase flow that contains solid particle and corrosive liquids, and it is long to have a life-span, efficient height, energy-conserving and environment-protective characteristics.For reaching above-mentioned purpose, the present invention adopts following technological scheme: the high-strength polyethers ceramic-base of a kind of high-ductility combined pump technological method comprises it is characterized in that: polyethers and ceramicpump impeller; Polyethers (macromolecule) pump impeller; The silicon nitride pump impeller; Silicon carbide, alumina base composite shaft sleeve, the pump housing, pump cover technological method.Hot pressed sintering is made typing with stock with mould, then high-temperature firing.After the cold moudling, carry out the hot pressing baking, go out mold forming, it is compound to make ceramic-base, is coated on the combined pump impeller of metal surface.The high-strength polyethers ceramic-base of high-ductility combined pump impeller adopts the baking moulding of colding pressing.The pump housing, pump cover adopts silicon nitride, silicon carbide, aluminium oxide cold moudling, high-temperature firing, liner is in metal then.
Impeller, the pump housing and accessory.Described impeller adopts semi-open type structural type so that with polyethers fiber and ceramic matric composite die casting in metal or nonmetallic impeller inner and outer surface, described impeller material adopts and gathers
Fiber and ceramic matric composite are coated on as the metal of the heart of other component of impeller or pump or skeleton or nonmetal inner and outer surface, and described impeller inner core or skeleton adopt metal or nonmetal.The front of described impeller does not have cover plate, forms certain clearance between the blade of its described impeller and described pump casing cover, plays certain seal action.The cover plate of the described pump housing adopts the curve form that cooperates with the curved surface of described impeller front vane, and the material of employing is cast iron, cast steel or nonmetallic surface die casting or applies wear-resisting polyethers fiber and ceramic matric composite.The described pump housing adopts is cast iron, cast steel or nonmetallic surface die casting or applies wear-resisting polyethers fiber and ceramic matric composite material.Wheel hub the place ahead of described impeller by tightly being spun on the pump shaft with described impeller sense of rotation opposite threads, and compresses described impeller with cheese head screw.
Described pump is work like this: behind the starting electrical machinery, drive described pump shaft rotation, described pump shaft connects described impeller by keyway or tapered sleeve, described impeller rotates and drives the fluid rotation, centrifugal action by rotation produces pressure, flows out described impeller outlet, and produces negative pressure at described impeller inlet place, so affiliated impeller produces pumping action in inlet.The just continuous pumping fluid of so continuous circulation.Fluid from described impeller extrusion, in the pump housing under entering, what the described pump housing adopted is the screw type track, and the kinetic energy that flows out the fluid of described impeller fast is converted to the pressure energy, will further increase the pressure of fluid like this, again from described pump housing efflux pump outlet.Because described impeller round end thread cap is opposite with described impeller sense of rotation, has guaranteed that described impeller can not get loose.
Compared with prior art, the major advantage and the effect that have of the present invention is:
1, pump employing polyethers fiber of the present invention and ceramic matric composite have very wear-resisting, corrosion resistance, have overcome the hard crisp characteristic of general pottery, have increased ceramic toughness.The impeller of ratio usefulness ceramic making in the past has the fragmentation of being difficult for, and can bear bump, and very high hardness is arranged again, has outstanding wear-resisting, corrosion resistant characteristic.
2, the impeller of the pump of the present invention mode that adopts die casting is coated on the inner and outer surface of metal or nonmetal impeller inner core with polyethers fiber and ceramic matric composite, wear-resisting, the corrosion resistant of the outer surface that had both increased described impeller, and the hardness height has guaranteed the toughness of impeller again.
The inventor has done wear-resisting contrast field testing with pump of the present invention and existing stainless steel pump, and experimental result records, and under the identical situation of other condition, pump of the present invention can turn round 6 months continuously, and stainless steel pump can only be with one month.
3, pump of the present invention is because long service life, and stable, maintenance is few, and impeller, the pump housing and accessory are changed few, and maintenance cost, operating cost are low, and energy-conserving and environment-protective have also greatly improved the performance of enterprises.
4, pump structure of the present invention is simple, and the life-span is long, and processing technology is simple, energy-conservation, low-carbon (LC), environmental protection.
Description of drawings
Fig. 1 is the pump structure schematic representation that embodiment 1 adopts;
Fig. 2 is the structural representation of impeller in the pump shown in Figure 1;
(5) embodiment the present invention is done detailed description further, but embodiments of the present invention is not limited to this below in conjunction with drawings and Examples.Embodiment: pump structure of the present invention is made up of the polyethers fiber that applies in pump housing front shroud 1, round end impeller nut 2, pump housing front shroud 3, pump housing front shroud polyethers fiber and ceramic matric composite coating 3.1, impeller 4, impeller polyethers fiber and ceramic matric composite inner and outer surface clad 4.1, the pump housing 5, the pump housing and ceramic matric composite 5.1, the bonnet 6 of the pump housing, stuffing box packing 7, packing seal lid 8, axle sleeve 9, packing seal lid 10, support 11, axle 12 as shown in Figure 1.The round end screw thread impeller cap 2 of figure one, employing be with the opposite screw thread of impeller 4 sense of rotation be tightened on the axle 12 on.Impeller 4 adopts Spielpassung with axle 12, and step and round end screw thread impeller cap 2 by axle 12 are fastened on the pump shaft 12, and because of round end screw thread impeller cap 2 is opposite with impeller 4 sense of rotation, like this, guarantee that impeller can not get loose at work.What impeller 4 adopted is the open type form, does not have front shroud, is convenient to apply, die casting polyethers fiber and ceramic matric composite comprise the technology realization of blade in the impeller inner and outer surface, and equipment is simple, cost is low, the manufacturing efficiency height.The polyethers fiber and the ceramic matric composite baking at a certain temperature that apply on the impeller 4 form.Metal or nonmetallic impeller matrix are packed in the die casting mould, and the polyethers fiber and the ceramic matric composite that baking are formed are injected in the die casting mould under the die casting machine high pressure again, have obtained evenly being coated on the compound body impeller 4 of impeller inner and outer surface like this.The front shroud 1 of pump and the surface that the cambered surface of impeller front cooperates leave certain uniform gap, play the effect of sealing.What the front shroud 1 of pump and the back shroud of pump 6 adopted is the mode of smearing, and polyethers fiber and ceramic matric composite evenly are applied in wetted surfaces.The internal surface of the pump housing 3 also adopts the cut water place of smearing polyethers fiber and ceramic matric composite, the especially pump housing, smears evenly.In Henan gold smelting Co., Ltd, under the identical operating conditions, same position, with a kind of fluid, unified operating mode substitutes the stainless steel pump that uses in the original production with pump of the present invention, reached 6 months the working life of existing pump, and the original pump life-span of using only is one month.In the pumping plant of the Yellow River, be used for substituting the original pump that uses, the life-span reaches 12 months, and the original pump life-span only is 2 months.These field testings also do not comprise the electric power of saving, reduce the labour cost and the fittings cost of maintenance, so whole cost also can reduce greatly, working stability and performance reliability are better.The foregoing description is a preferred implementation of the present invention; but embodiments of the present invention are not restricted to the described embodiments; for example; use other ceramic based materials such as silicon nitride or aluminium oxide; other any runs counter to and deviates from change, the modification done under spirit of the present invention and the principle, substitutes, combination, simplifies; all should be the substitute mode of equivalence, be included within protection scope of the present invention.The foregoing description is a preferred implementation of the present invention; but embodiments of the present invention are not restricted to the described embodiments; for example; adopt any die casting or injection system etc.; other any do not deviate from change, the modification done under spirit of the present invention and the principle, substitutes, combination, simplify; all should be the substitute mode of equivalence, be included within protection scope of the present invention.
Claims (5)
1. the high-strength polyethers ceramic-base of high-ductility combined pump technological method is characterized in that:
1) polyethers and ceramicpump impeller; Polyethers (macromolecule) pump impeller; The silicon nitride pump impeller; Silicon carbide, alumina base composite shaft sleeve, the pump housing, pump cover technological method;
2) hot pressed sintering is made typing with stock with mould, then high-temperature firing;
3) after the cold moudling, carry out the hot pressing baking, go out mold forming, it is compound to make ceramic-base, is coated on the combined pump impeller of metal surface;
The high-strength polyethers ceramic-base of above-mentioned high-ductility combined pump impeller adopts the baking moulding of colding pressing, the pump housing, and pump cover adopts silicon nitride, silicon carbide, aluminium oxide cold moudling, high-temperature firing, liner is in metal then.
2. the technological method of the high-strength polyethers ceramic-base of high-ductility according to claim 1 combined pump is characterized in that polyethers and ceramicpump impeller.
3. the technological method of the high-strength polyethers ceramic-base of high-ductility according to claim 2 combined pump is characterized in that polyethers (macromolecule) pump impeller.
4. the technological method of the high-strength polyethers ceramic-base of high-ductility according to claim 3 combined pump is characterized in that the silicon nitride pump impeller.
5. the technological method of the high-strength polyethers ceramic-base of high-ductility according to claim 3 combined pump is characterized in that silicon nitride, silicon carbide, alumina base composite shaft sleeve, the pump housing, pump cover.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010101870511A CN102261335A (en) | 2010-05-31 | 2010-05-31 | Process for high-ductility and high-strength polyether ceramic matrix combination pump |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010101870511A CN102261335A (en) | 2010-05-31 | 2010-05-31 | Process for high-ductility and high-strength polyether ceramic matrix combination pump |
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| CN102261335A true CN102261335A (en) | 2011-11-30 |
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| CN2010101870511A Pending CN102261335A (en) | 2010-05-31 | 2010-05-31 | Process for high-ductility and high-strength polyether ceramic matrix combination pump |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110077787A (en) * | 2019-04-23 | 2019-08-02 | 王锡山 | A kind of diatomite sorting catapult device |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3524550A1 (en) * | 1985-07-10 | 1987-01-22 | Wahl Verschleiss Tech | Wear plate |
| DE4239391A1 (en) * | 1991-11-27 | 1993-06-09 | Electro Chemical Engineering Gmbh, Zug, Ch | Aluminium magnesium, titanium wear resistant rotor - comprises oxide ceramic layer with fluoro polymer, e.g. poly:tetra:fluoroethylene, for resistance to corrosion for turbo mol. pump |
| CN1405225A (en) * | 2001-08-14 | 2003-03-26 | 梁宏祥 | Polymer-based silicon carbide particle reinfored composite material and its production method |
| CN1746510A (en) * | 2005-09-30 | 2006-03-15 | 李子红 | Composite impeller of metal-base ceramic surface pump and production thereof |
| CN201159194Y (en) * | 2007-02-08 | 2008-12-03 | 运城市盐湖区西城新特防腐耐磨表面工程技术中心 | Steel plastic ceramic composite corrosion-proof centrifugal pump |
-
2010
- 2010-05-31 CN CN2010101870511A patent/CN102261335A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3524550A1 (en) * | 1985-07-10 | 1987-01-22 | Wahl Verschleiss Tech | Wear plate |
| DE4239391A1 (en) * | 1991-11-27 | 1993-06-09 | Electro Chemical Engineering Gmbh, Zug, Ch | Aluminium magnesium, titanium wear resistant rotor - comprises oxide ceramic layer with fluoro polymer, e.g. poly:tetra:fluoroethylene, for resistance to corrosion for turbo mol. pump |
| CN1405225A (en) * | 2001-08-14 | 2003-03-26 | 梁宏祥 | Polymer-based silicon carbide particle reinfored composite material and its production method |
| CN1746510A (en) * | 2005-09-30 | 2006-03-15 | 李子红 | Composite impeller of metal-base ceramic surface pump and production thereof |
| CN201159194Y (en) * | 2007-02-08 | 2008-12-03 | 运城市盐湖区西城新特防腐耐磨表面工程技术中心 | Steel plastic ceramic composite corrosion-proof centrifugal pump |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110077787A (en) * | 2019-04-23 | 2019-08-02 | 王锡山 | A kind of diatomite sorting catapult device |
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| C06 | Publication | ||
| PB01 | Publication | ||
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Application publication date: 20111130 |