CN102374199A - Anticorrosive wear-resistant centrifugal pump volute casing - Google Patents
Anticorrosive wear-resistant centrifugal pump volute casing Download PDFInfo
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- CN102374199A CN102374199A CN2011103677871A CN201110367787A CN102374199A CN 102374199 A CN102374199 A CN 102374199A CN 2011103677871 A CN2011103677871 A CN 2011103677871A CN 201110367787 A CN201110367787 A CN 201110367787A CN 102374199 A CN102374199 A CN 102374199A
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Abstract
The invention relates to an improved anticorrosive wear-resistant centrifugal pump volute casing, which is characterized in that: a pump casing an all-plastic or plastic-lined pump casing, and a sectioning pump casing is a volute casing which is formed by asymmetrically lateral sectioning and provided with a complete liquid outlet pipe section; an integral wear-resistant inlay is in a shape of a cover or basis which is provided with a liquid outlet hole and not provided with a liquid outlet pipe section and is provided with a through axle hole at the bottom; an involution end surface of a lining in the volute casing does not exceed an involution end surface of the volute casing; and a casting-type hardened combining layer is arranged between the volute casing and the wear-resistant inlay. By adoption of the structure and the lining mode, the lining manufacturing difficulty of ceramics, microcrystal glass and the like which are low in cost and difficult to mold is greatly decreased, the manufacturing cost is reduced, the lining is simple, the two historic difficulties of lining body molding and manufacturing and easiness of crazing of high-brittleness lining body during installation and maintenance are solved with low cost, the comprehensive service life is prolonged by more than one time, the overall cost is higher than that of the original all iron pump casing lining ceramic inlay. The invention creates a precedent that the silicon carbide and microcrystal glass materials which are difficult to mold and machine, high in brittleness and extremely good in abrasive resistance are applied to a wear-resisting lining of a centrifugal pump.
Description
Technical field
The present invention is the improvement to the anticorrosive anti-wear centrifugal pump shell, relates in particular to a kind of simple in structurely, and lining is easy to make, and assembling is simple, and manufacture cost is not higher than existing anticorrosive anti-wear centrifugal pump, the anticorrosive anti-wear centrifugal pump spiral casing that cost performance is high.
Background technique
A large amount of common anticorrosive anti-wear centrifugal pump shells that use in the industry, very exquisite to product price with the operation consuming cost, become the pump overriding concern factor of selecting to a great extent.Existing use is the hydrometallurgy leaching section for example; Suction corrosivity contains solid slip with not only corrosion resistant but also wear-resisting centrifugal pump; Consider from the Economy angle, adopt mostly in the good metal pump case of intensity and inlay lining ceramic insert form, satisfy the anticorrosive anti-wear requirement simultaneously; This is most economical form also, is that present above-mentioned industry is mainly used pump.Yet because pump case has the liquid outlet extension; Increased the ceramic lined manufacture difficulty; Existing technology adopts usually to cut open in the pump case and breathes out furan pump case 1 and fill the span of a man's arms and clamp lining inlay 2 forms (Fig. 1); Promptly in cut open pump case (cutting open) inner face and inlay the lining ceramic mouldings along liquid outlet section axis after, form whole anticorrosive anti-wear centrifugal pump spiral casing to breathe out the fill the span of a man's arms form of inner piece of furan again.But the ceramic embedded lining of moulding is because of having liquid outlet extension 2.1 (Fig. 2,3), similar tobacco pipe shape; Make forming process of ceramics, burn till, grinding difficulty very all; Lining moulding inlay product qualified rate is very low, has only usually about 60-70%, causes lining spare manufacture cost higher; Secondly, involutory assembling behind the lining, dissecing involutory sealing for true corrosion-resistant requirement needs to bear (lining combination end face protrusion pump case combination end face) by the lining ceramic body, i.e. and pump assembling is made by Hough pump case side face bolt 3 axial compression pottery inlay and forms sealing.And pottery belongs to the fragility material, and the compression type assembly operation is careless slightly, impacting force excessive or compress each point stressed asymmetric evenly; Will cause the cracking of lined ceramics inlay, and impacting force can cause inadequately combinating face to leak, this gives assembling; Especially the user voluntarily maintain and replace bring the deuce to pay; For example short shaft seal damage of life-span, the assembling of dismounting back very easily causes the inner lining body cracking, and this has become the major reason that the ceramic lined pump is difficult to promote; Besides, in cut open the formula metal shell, because of cutting open at pump case and liquid outlet intermediate portion, also cause casting, cutting take a lot of work, time-consuming; If do not cut open structure in not adopting; Because of there is the liquid outlet section in the ceramic spiral case of interior edge; Can't the backing member of drag-out mouth be bumped in the metal shell again, lining can only adopt to press and annotate or the injection moulding lining, but plastic materials only has corrosion resistant performance; Wear resistance is relatively poor relatively, can not satisfy anticorrosive anti-wear usage requirement simultaneously.Though existing technology also has the cross-sectional lining formed body (Fig. 4) of employing, yet the lining inlay still has the liquid outlet section, and aforesaid drawbacks is not still overcome.Because aforementioned various reasons, though cause lining ceramic mouldings centrifugal pump year historical surplus having 50 in China's invention, and actually be difficult to require at the same time extensively promote in wear-resisting and the corrosion resistant engineering.Present more alternative employing metal pump case mold pressing lining plastic materials, but cause working life shorter needs in the production often to change, and has increased user's shutdown, has changed and influence manufacturing efficiency (but changing safety relatively).In addition; Because the lining inlay has the liquid outlet extension; The pump spiral case is complex-shaped shaped body in addition; Make the nonmetallic material that some high hardness wear-resisting property is good and cost is low, fabulous silicon carbide, the sytull of wear-resisting property for example is because of moulding and processing obstacle can't be applied in the pump case lining.
The plastics pump case, because cost is low, machine shaping is convenient, and rotproofness is good, and especially in alkaline species and fluoro-containing medium, corrosion resistant performance is superior to lining ceramic material (being generally aluminium oxide) greatly.Though existing technology is also as centrifugal pump shell (comprise serving as a contrast and mould), because plastic wear-resisting property relative deficiency has its narrow limitation again in some wear-resisting demanding occasions uses; For example wear no resistance and cause working life extremely short, even if wear-resisting property ultra-high molecular weight polyethylene relatively preferably, wear resistance is also unsatisfactory; For example leach the post at hydrometallurgy and use, the pump spiral case life-span generally has only 35-40 days, in zinc, copper, iron ore dressing, uses; Life-span generally is no more than 5 days; Cause the user to change frequently, influence ordinary production, can not be used for wear-resisting more severe coloured, ferrous metal ore dressing post especially.Because inserted lining pump case cuts open form structure in adopting; And the lining inlay has the liquid outlet section; Become pump case and inlayed fixedly thinking of lining; Even if cut open formula plastics pump case in adopting, because the lining ceramic insert has the liquid outlet extension, the shortcoming that the manufacturing of lining inserts is difficult, yield rate is low still exists; Secondly, in cut open the structural plastic pump case because hatching is in pump liquid outlet center, and the plastics pump case adopts compression molding basically, this cuts structural type open and causes equally that mould is complicated, difficulty is made in moulding, the processing of mold pressing rear pump shell is also inconvenient, manufacturing efficiency is not high.The machine shaping cost is bigger, causes pump casing to make the overall cost rising and loses competitive ability, does not have practical significance to improving the product price ratio.Though existing technology plastics pump case; There is the inclined to one side side of employing to cut open structure (pump case is dissectd into pump cover and is with complete fluid pipeline section spiral case disome combination); But since receive the intrinsic lining thinking of people constraint (think pump case wear-resisting must be whole overcurrents positions, promptly must comprise the liquid outlet section simultaneously), to cut open pump case in the pump case manufacturing simple though cut open so partially; But lining moulding inlay can't be installed because of drag-out mouth pipeline section, and causing can't lining.Therefore existing technology is actual does not have a bulk ceramics inlay centrifugal pump in the plastic pump hub plate, is that existing technology does not adopt plastics pump case (comprise lining mould) lining pottery inlay to solve wear-resisting problem pump case and relevant report and enlightenment yet.
Wear-resisting precious metal, though have good wear resistance, corrosion resistant performance also can satisfy usage requirement simultaneously; Be difficult in a large amount of the use, promote but cost an arm and a leg, for example price is the high-chromium alloy pump case of 3 times of same specification ultra-high molecular weight polyethylenes, also only 1-2 month wear-resisting working life; Moreover in containing hydrochloric acid and/or fluoride ion ore pulp; The not anti-aforementioned dielectric corrosion of high-chromium alloy, actual life is shorter, so actual industrial does not generally adopt wear-resisting noble alloy pump case.
Some special industry objectively presses for anticorrosive anti-wear and has centrifugal pump concurrently; Especially the excellent corrosion-proof type centrifugal pump (for example coloured, ferrous metal ore dressing post) of wear resistance; And pump industry technology personnel have done multiple different trial the (for example a large amount of patents of claimant's application) through all effort to the anticorrosive anti-wear of centrifugal pump, but because it belongs to large common easy consumption industrial goods; Restricted by price factor, fail to obtain low-cost effectively the solution and breakthrough for a long time.Pump is used in present domestic wet dressing, hydrometallurgy, some environmental protection; Though the market demand is very big; But lack good economy performance for a long time, corrosion resistant is wear-resisting again, the centrifugal pump shell that the product price ratio is high; This has become the thing that these industries are extremely had a headache with pump, objectively causes aforementioned industry not have the optional situation of idealized pump basically.At present big, the occuping market leading position of use amount to remain cost price low; The ultra-high molecular weight polyethylene pump (lining mould or overall plastic) of comprehensive price ratio before being arranged in, and wear resistance is good but heat resistance is poor, the rubber lined pump of chemical-resistance difference (also having minority to select expensive high-chromium alloy pump).Cause in these industry pump using processs because of wear resistance or the strong frequent change pump spiral case of rotproofness, make that using the enterprise operation cost raises, manufacturing efficiency is not high, and the long-term objective reality of this phenomenon fails to obtain to change.Though it is huge that the technician knows this type of pump market, application industry and pump manufacturing are all wanted to solve, and it is low to develop a kind of cost price, and comprehensive price ratio is good, and the anticorrosive anti-wear centrifugal pump is owing to receive the constraint of traditional thinking all to fail to find solution.In current science highly developed today,, really fail to realize low-cost breakthrough though foregoing problems seems simply.And because the lining mode is unresolved, cause some wear-resisting propertys fine, but the high performance material (for example sytull, silicon carbide etc.) of shaping operation difficulty is failed effectively to be applied to wear-resistant centrifugal pump so far and is made lining.Aforementioned is exactly the objective present situation of anticorrosive anti-wear centrifugal pump shell.
Summary of the invention
The object of the invention is to overcome the deficiency of above-mentioned existing technology, provides a kind of simple in structure, and lining is easy to make, and assembling is simple, and manufacture cost is not higher than existing anticorrosive anti-wear centrifugal pump, the anticorrosive anti-wear centrifugal pump spiral casing that cost performance is high.
The object of the invention realizes, based on cls analysis that application centrifugal pump actual wear is lapsed, finds that surface wear mainly causes by washing away in the pump; The actual wear position mainly concentrates on the spiral case internal face of pump case, and the spiral case bottom, and the liquid outlet section is because fluid flow direction and liquid outlet inwall are almost parallel; It is very little that solid-phase material washes away angle to liquid outlet section inwall; It is also very little to form erosive wear, so actual wear is less, does not influence actual wear-resisting use.To above-mentioned modal analysis, mainly improving one is to adopt plastics pump cases (comprising overall plastic pump case and plastic lined pump shell), the 2nd, and change pump case and inlay the lining cut-away form; Change asymmetric side into and cut open by cuing open structure in former; Pump case dissectd by front pump cover and with the spiral case disome of complete liquid outlet pipeline section form, the 3rd, the wear resistance lining inlay is drag-out mouth section not, and involutory end face does not exceed the pump case involutory surface behind the lining; Easy greatly lining inlay is made; And the difficulty of assemble pump (avoid compressing ceramic lined cracking), thereby overcome the deficiency of existing technology, realize the object of the invention.Specifically, anticorrosive anti-wear centrifugal pump spiral casing of the present invention comprises in dissecing pump case reaches and inlays whole wear-resisting inlay that it is characterized in that said pump case is overall plastic or the plastic lined pump shell, dissecing pump case is the spiral case with complete liquid outlet pipeline section that asymmetric side is cutd open formation; The wear-resisting inlay of said integral body be have the fluid oral pore and not drag-out mouth pipeline section, bottom the lid or the basin shape of wearing axis hole arranged, and lining involutory end face in spiral case does not exceed the involutory end face of spiral case; Casting type sclerosis binder course is arranged between spiral case and wear-resisting inlay.
Among the present invention.
Inlay whole wear-resisting inlay; Be meant that with existing technology liner body is a molded integral; Be embedded in the pump case inner peripheral surface; Be different from existing technology monolithic lining inlay for not drag-out mouth pipeline section of liquid outlet is only arranged, with the mold pressing lining for example the mold pressing lining mould difference and be inlaid in the pump spiral case for after the backing layer moulding, and connect fixing through adhesive layer.Whole wear-resisting inlay, owing to omit the liquid outlet pipeline section, not only drag-out mouth tube manufacture is not easy for inlay; Simplified the moulding of difficult shaping material greatly, the moulding up-to-standard rate obviously improves, and can have the moulding inlay of drag-out mouth pipeline section now; The moulding up-to-standard rate improves 30-40%; Also can make some can not be used as the low-cost high abrasion resisting material of pump case lining originally because of the moulding obstacle, for example sytull, silicon carbide can be made wear-resisting inlay, have broken through and can only adopt aluminium oxide ceramics to make the lining inlay at present; Enlarged wear-resisting inlay material and selected, it is higher like coloured, ferrous metal wet dressing post application to be used for some wear-resisting requirements; And made things convenient for and inlay lining, inlay only needs be bumped into spiral case from the spiral case opening side.The lining inlay is drag-out mouth pipeline section not; Also saved liner body material (only accounting for former precious metal pump 1/4) by a relatively large margin; Make some cost an arm and a leg material for example metal alloy, modified plastics alloy etc. be able in reality, use, can by common, be prone to consumption and use and accepted.In addition; Wear-resisting inlay; Involutory end face does not exceed the pump case involutory surface behind the lining, thereby it is good to have solved wear resistance, but another big defective of material linings such as the big aluminium oxide of fragility, silicon carbide, sytull assembling; Can not produce because of the assemble pump sealing causes drawing up of lining inlay bright, this has also solved technical barrier for practical application.An above-mentioned innovation greatly that is different from existing technology for this patent.
Pump case can be overall plastic pump case, also can be the plastic lined pump shell; Wherein the plastic liner face mainly provides anticorrosive, does not so just need the lining inlay to bear corrosion resistant, and the lining inlay only need be born wear-resisting functions and get final product; Thereby for a change pump case dissects mode and lays the foundation for satisfying the lining inlay, need not resemble inlay in the metal pump hub plate, needs bear corrosion resistant by the lining inlay; And can make and dissect pump case when setting up pump jointly, the cutting plane sealing compresses and can not need the lining inlay to bear, and bears and change by pump case; Thereby the inlay combinating face pump case combination seal face that contracts in can be slightly; Thereby solved such as the big liner body of fragility such as aluminium oxide ceramics, silicon carbide, sytull the cracking problem when assembling compresses, cleared away the assembling obstacle for this type of brittle material as the lining inlay, this innovates greatly for this patent is different from existing technology one.Overall plastic spiral case, (it is simple to have moulding process, and it is high to make efficient, can use die casting, molding and forming can to adopt polypropylene; Just lower temperature resistance is slightly poor), (it is good to have lower temperature resistance, can use in temperature not high below 70 ℃ for polyethylene; But moulding manufacturing efficiency is high, and certain wear resistance is arranged), (it is good to have wear resistance for ultra-high molecular weight polyethylene; But moldability is relatively poor), (it is low to have price, and resistance to low temperature is good for PVC; It is low less than 60 ℃ of occasions to be used for serviceability temperature), thus can select corresponding plastics to make pump case according to different use occasions.
Pump case dissects and adopts asymmetric side to cut open; Pump case is dissectd to forming by front pump cover and with the spiral case (hereinafter to be referred as spiral case) of complete liquid outlet pipeline section (the liquid outlet cylinder is complete not to be dissectd); Be with complete liquid outlet pipeline section spiral case; The similar tobacco pipe shape of shape is different from the wear-resisting inlay of existing clad lining and cuts open pump case-liquid outlet pipeline section in adopting and axially cut open.Why this patent spiral case lining adopts this to dissect mode; Be based on making on the centrifugal pump shell abrasion analysis basis, the fluid pipeline section is owing to actually use wearing and tearing less relatively, and plastics fluid pipeline section can reach wear resistance lining basic identical working life working life; Thereby can be without lining; The lining inlay only need be processed lid or basin shape, and the bottom surface is left and worn axis hole, and the side is left liquid outlet and got final product.Simplified wear-resisting inlay shape and structure and preparation process so greatly, made the wear-resisting property spy good, but the materials such as silicon carbide, sytull that are difficult to moulding are able to as the lining inlay, lining inlay moulding up-to-standard rate is high, thereby has reduced lining inlay manufacture cost.Simultaneously this dissects mode, makes that also forming complete pump case becomes simply, and pump cover makes the pump cover lining more simple for the basin shape of band liquid entering hole, and pump cover lining inlay only need be made the similar basin shape integral body of a central opening and get final product.
Casting type sclerosis binder course is arranged between wear-resisting inlay and spiral case; Its effect is that connection inlay and pump case do not make it come off; So simultaneously owing to wet cast after-hardening joining material (casting type solidity material) has been adopted in the less selection of actual gap between inlay and pump case, through pouring type filling binding material, the sclerosis back forms the binder course of sclerosis; Make inlay and spiral case form strong bonded between the two, prevent to inlay the lining inlay and come off in using.Casting type solidity material can be a thermosetting resin for example, calcium plaster, cement, castable refractory, liquid rubber etc.Wherein a kind of better in casting type solidity material, being filled with solid mineral grain, to strengthen the wear resistance of adhesive layer, reduce of the wearing and tearing of conveying slip to adhesive layer.
In addition, adopt overall plastic pump case,, cause plastics pump case pressurized to produce permanent compressive strain for avoiding plastics pump case assembled shaft to compressing.A kind of better employing axially is provided with the pressure-bearing supporting element at the spiral case side face at least, assembles the compressibility permanent deformation that clamping force causes with opposing.Axial stiffness pressure-bearing supporting element can be to be embedded in the pump case side face plastic layer, also can be for example to wrap up form, and in plastics pump case periphery, wherein a kind of being preferably is embedded in the plastics pump case side face.Pressure-bearing supporting piece structure form; Also can have multiple; For example monolithic or alternate two ring, discontinuous strut alternately can also be similar cage-shaped structure of reinforcement fabrication or the like; The technician can understand, all can be utilized as long as can play the supporting element of the anti-compression of axially support.
For inlay in effectively preventing to use and spiral case because of inconsistent loose or dislocation, the rotation displacement of causing that expand with heat and contract with cold; A kind of better is between inlay side face and/or bottom surface and spiral case side face and/or bottom surface; Be designed with the concavo-convex rotation prevention structure of inlaying; Inlay through concavo-convex that to prevent that the lining inlay from producing because of expanding with heat and contract with cold loosening, rotational displacement with come off.
Easy for describing, this patent abrasion-proof corrosion-proof centrifugal pump removes pump case and adopts lining to mould or overall plastic; And adopting side to cut structure open, the wear-resisting inlay of lining is drag-out mouth pipeline section not, and outside (flush or in contract) the involutory end face of spiral case that embeds that involutory end face does not exceed behind the spiral case; All the other unaccounted for example pump case manufacturings; Lining inlay manufacturings etc., all with existing technology lining wear body pump, just another one is not described in detail.
Anticorrosive anti-wear centrifugal pump shell of the present invention is with respect to existing technology, because according to pump case actual wear situation; The ingenious difference in functionality material that makes is applied to abrasion-proof corrosion-proof pump difference in functionality district, adopts at least that internal surface is the pump case (lining is moulded or overall plastic pump case) of plastics, and asymmetric side is dissectd and inlayed liner body; Pump liquid outlet extension is wear-resisting less demanding, is born by the plastics pump case, thereby makes the wear-resisting inlay of lining only need bear single wear-resisting functions; The wear resistance lining inlay does not need drag-out mouth pipeline section; The pottery, sytull etc. that have fallen low-cost difficult moulding are greatly made the difficulty of liner body, make that wear-resisting backing member moulding is simple, and are easy to make; Fabrication yield is high, has reduced the lining manufacture cost.Simultaneously; The asymmetric side of pump case is cutd open and is made lining also simple; Pump case and lining function are shared, and the involutory sealing surface of combination pump case can be born by the plastics pump case, does not need the big pottery of fragility, sytull inlay to bear (non-contact of liner combinating face); Make assembling, change in inlay be difficult for compressing sealing and crush, solved the easy cracked two big historic difficult problems of the big liner body installation, maintenance of liner body moulding manufacturing and fragility simultaneously.Not only low cost has solved centrifugal pump anticorrosive anti-wear problem; Overall cost is not higher than ceramic inlay in the former all iron pump hub plate; And cost performance is high, and can improve more than 1 times comprehensive working life (lining is in useful life period), also prolonged user's service cycle; Improve the application operation stability, reduced shutdown loss.In addition, the asymmetric side of especially overall plastic pump case is cutd open structure, can also improve pump case manufacturing efficiency with one-step mould or injection molding forming method moulding.And make lining simple, only need to put into, and adopt cast cured explosive material bonding between lining inlay and pump spiral case, also make lining damage the back and be prone to change, also reduced user's cost of production through dissecing opening side.Especially adopt this lining structure, it is frangible greatly to have started difficult moulding, difficult processing, fragility, but special good silicon carbide, the sytull material of wear resistance; Can conveniently make the precedent that is used for the centrifugal pump wear resistance lining, can increase substantially wear pump working life (for example the sytull wear-resisting property is that conventional ceramic is more than ten times), make application area more extensive; For example can be use in stronger and various lots of coloured, the ferrous metal ore dressing in abrasiveness; Prolong the working life in the industry significantly, change and select mine pump at present, wearing and tearing are big, short, the big present situation of expense of life-span; Can reach original more than 2 times working life, operating cost saves 50%.The lining inlay does not have the liquid outlet pipeline section, makes more to economize with material, and makes easily, has made things convenient for precious metal equally, and for example high-chromium alloy is used as the wear-resisting inlay of low cost.
Optimize specific embodiment below in conjunction with several; Essence of the present invention is further understood in exemplary illustration and help; But embodiment's detail only is in order the present invention to be described, not to represent the present invention to conceive whole technological schemes down, therefore should not be construed as the total technological scheme of the present invention to be limited; Some are In the view of the technician; The unsubstantiality that does not depart from the present invention's design increases and/or change, and for example simple the change or replacement of technical characteristics to have same or similar technique effect all belongs to protection domain of the present invention.
Description of drawings
Fig. 1 cuts open the ceramic embedded wear-resisting inlay structural representation of formula metal pump case in the existing technology.
Fig. 2 is Fig. 1 lining drag-out mouth pipeline section inlay structural representation.
Fig. 3 is Fig. 2 left side TV structure schematic representation.
Fig. 4 is the ceramic embedded wear body structural representation of the cross-sectional formula metal of existing technology pump case.
Fig. 5 inlays wear-resisting inlay structural representation for plastics spiral case of the present invention.
Fig. 6 is Fig. 5 A portion structure for amplifying schematic representation.
Fig. 7 is the ceramic embedded inlay front view of Fig. 5.
Fig. 8 is Fig. 7 left view.
Fig. 9 is and lining pump cover and lining spiral case unipump structural representation.
Figure 10 is a plastics pump case inner lining steel skeletal structure schematic representation.
Figure 11 inlays wear-resisting inlay structural representation again for metal shell lining plastics.
Figure 12 adopts lug anticreep nested structure schematic representation for inlay.
Figure 13 is Figure 12 left side TV structure schematic representation.
Figure 14 is for having concavo-convex rotation prevention structure schematic representation between inlay bottom and spiral case.
Figure 15-17 is the multiple uneven anti-rotation form structure for amplifying schematic representation of B portion among Figure 14.
Embodiment
Embodiment 1: referring to Fig. 5-8, and anticorrosive anti-wear centrifugal pump spiral casing of the present invention
,Comprise that asymmetric side cuts open the plastics spiral case 4 of the complete liquid outlet pipeline section of a side opening band of formation, be embedded with in the plastics spiral case and connect that there is axis hole the spiral case bottom surface with metal embedded part 8.Liner oxidation aluminium lid shape inlay 5 peripheries are slightly less than the spiral case internal face, and peripheral wall surfaces has liquid outlet 9 and do not have the liquid outlet pipeline section, and there is axis hole 7 bottom surface, and ceramic inlay embeds the spiral case end face 2mm that contracts in the spiral case ear end face by the spiral case opening side.Inlay outer circumferential face and spiral case inner peripheral surface respectively have alternate groove or pit 6.1 (Fig. 6); After the pottery inlay embeds the plastics spiral case; Be cast with the casting type solidity material (for example slush) that is filled with solid mineral grain at inlay and spiral case gap; Solidify the back and between lining inlay 5 and plastics spiral case, form coupling tie layer 6.2, prevent that inlay from coming off thereby reach.Be assembled into pump (Fig. 9), the pump cover of the same aluminium oxide basin of lining shape bulk ceramics inlay 10 is involutory with the spiral case 4 of lining pottery inlay, and involutory surface is placed with sealing gasket, and the border is compacted to sealing without leakage (compress stressed born by spiral case side face and pump cover) with screw.
Aluminium oxide lining inlay is made, and same existing technology for example can adopt injection forming or compression molding, sintering after the roughing, and again through grinding processing, just few the detailed description.
Embodiment 2: referring to Figure 10, as aforementioned, plastics spiral case 4 side face thickness axis are inside; And resistance to compression (drawing) the metal mouse cage skeleton pressure-bearing supporting element 12 that is embedded with band connection spiral shell nurse 11 in the bottom surface; Provide the anti-compression of rigidity to support to axial clamping force when clamping, in the time of can preventing to assemble pump cover, cause spiral case compressive strain for the pump assembling; Reinforced plastic spiral case anti-deformation improves structural strength and mechanical stability.The smaller pump case width of mouse cage skeleton axial width makes it to be recessed in the plastics pump case, to prevent the corrosion of fed sheet of a media to metallic supports.
Embodiment 3: referring to Figure 11, like embodiment 1, wherein centrifugal pump spiral casing is that the lining of metal shell 1 plastic lining layer 13 is moulded spiral case, in plastic lining layer, inlays like routine 1 ceramic wear-resisting inlay 5 again.
Embodiment 4: referring to Figure 12,13; Like embodiment 2; Wherein plastics spiral case open end or inner peripheral surface have some indents 14, and inlay 5 end faces or outer circumferential face have same quantity and lug (not shown) at interval, and inlay rotates inlay after through lug indent being embedded spiral case; Lug and indent are staggered, thereby reach the fine function of preventing deviating from.
Embodiment 5: referring to Figure 14-17; As aforementioned, concavo-convex embedding rotation prevention structure 15 is also arranged between wear-resisting inlay bottom surface and spiral case bottom surface, uneven rotation prevention structure can have various ways; For example there are some alternate indents the spiral case bottom surface, and there are some corresponding protrusions (Figure 15) the inlay bottom surface; Or opposite (Figure 16); Can also be that inlay bottom surface and spiral case bottom surface are indent, have abaculus 16 to embed and prevent mutual rotation (Figure 17); Can be its uneven structure that the technician uses in addition.
In addition, the lining inlay can also adopt low-cost high-abrasive materials such as silicon carbide ceramics, sytull, antifriction metal (AFM) alloy, abrasion resistant polyurethane, modified abrasion resistant plastic alloy.Their forming method, the common forming method of material for this reason, crystallite glass lining inlay for example is by existing technology sytull container preparation method; With the sytull raw material of preparation, put into glass furnace fusing after, use mould compression moulding; Annealing, the crystallization furnace crystallization is put in grinding.The preparation of silicon carbide inlay, with the carborundum powder raw material, adding additives is processed has mobile slurry, through the moulding of injection forming mode, dry sclerosis back roughing base substrate, sintering carries out fine finishing as required.
The spiral case plastics can be in polypropylene, polyethylene, ultra-high molecular weight polyethylene, the PVC any one, confirm to select according to use occasion.
For the large centrifugal pump, inlay can also adopt the split composite structure, is about to whole inlay and is decomposed into some composite structures, can simplify large-scale lining inlay and make, and improves the moulding up-to-standard rate.
To those skilled in the art, under this patent design and specific embodiment enlightenment, some distortion that can directly derive or associate from this patent disclosure and general knowledge; Those of ordinary skills will recognize also can adopt additive method, or uses substituting of known technology in the existing technology always, and the equivalence of characteristic changes or modification; Mutual various combination between characteristic, for example plastics pump case material changes, or adopts the plastic lined pump shell; The variation of the anti-compression of liner backing member form, the change of cast solidity material, the difference of filling solid mineral grain; The change of the wear-resisting inlay material of lining, or the like unsubstantiality change, can be employed equally; Can both realize this patent representation function and effect, launch for example no longer one by one to describe in detail, all belong to this patent protection domain.
Easy on describing, the said spiral case of this patent
,Be meant that the asymmetric side of pump case cuts open, the whole liquid outlet pipeline section of the band of formation and bottom and all side structure bodies, similar tobacco pipe shape does not comprise the front pump cover part after promptly the asymmetric side of pump case is cutd open.
Claims (7)
1. the anticorrosive anti-wear centrifugal pump spiral casing comprises in dissecing pump case reaches and inlays whole wear-resisting inlay, and it is characterized in that said pump case is overall plastic or the plastic lined pump shell, dissecing pump case is the spiral case with complete liquid outlet pipeline section that asymmetric side is cutd open formation; The wear-resisting inlay of said integral body be have the fluid oral pore and not drag-out mouth pipeline section, bottom the lid or the basin shape of wearing axis hole arranged, and lining involutory end face in spiral case does not exceed the involutory end face of spiral case; Casting type sclerosis binder course is arranged between spiral case and wear-resisting inlay.
2. according to the said anticorrosive anti-wear centrifugal pump spiral casing of claim 1, it is characterized in that casting type sclerosis binder course by thermosetting resin, calcium plaster, cement, castable refractory, a kind of in the liquid rubber, form through wet cast, sclerosis back.
3. according to the said anticorrosive anti-wear centrifugal pump spiral casing of claim 2, it is characterized in that in the casting type sclerosis binder course solid mineral grain being arranged.
4. according to the said anticorrosive anti-wear centrifugal pump spiral casing of claim 1, it is characterized in that there is the concavo-convex rotation prevention structure of inlaying inlay side face and/or bottom surface and spiral case side face and/or bottom surface.
5. according to claim 1,2,3 or 4 said anticorrosive anti-wear centrifugal pump spiral casings, it is characterized in that overall plastic pump case axially is provided with the pressure-bearing supporting element at the spiral case side face at least.
6. according to the said anticorrosive anti-wear centrifugal pump spiral casing of claim 5, it is characterized in that lining inlay material is aluminium oxide ceramics, silicon carbide ceramics, sytull, antifriction metal (AFM) alloy, abrasion resistant polyurethane, modified abrasion resistant plastic alloy.
7. according to the said anticorrosive anti-wear centrifugal pump spiral casing of claim 5, it is characterized in that the plastics spiral case is a kind of in polypropylene, polyethylene, ultra-high molecular weight polyethylene, the PVC.
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| CN2011103677871A CN102374199A (en) | 2011-11-18 | 2011-11-18 | Anticorrosive wear-resistant centrifugal pump volute casing |
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| CN2011103677871A CN102374199A (en) | 2011-11-18 | 2011-11-18 | Anticorrosive wear-resistant centrifugal pump volute casing |
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| CN2011103677871A Pending CN102374199A (en) | 2011-11-18 | 2011-11-18 | Anticorrosive wear-resistant centrifugal pump volute casing |
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| CN102954039A (en) * | 2012-12-27 | 2013-03-06 | 宜兴市灵谷塑料设备有限公司 | Centrifugal pump of liner of sealed anti-cracking silicon carbide ceramic |
| CN103591049A (en) * | 2013-10-18 | 2014-02-19 | 宜兴市宙斯泵业有限公司 | Cracking-preventive wear-resistant centrifugal pump |
| CN103671266A (en) * | 2013-11-21 | 2014-03-26 | 宜兴市宙斯泵业有限公司 | Large-scale plastic-lining desulfuration circulating pump and manufacturing method thereof |
| CN103727067A (en) * | 2012-10-11 | 2014-04-16 | 闫海群 | Novel slurry-pump overcurrent device |
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| CN106582466A (en) * | 2015-10-14 | 2017-04-26 | 江苏国强环保集团有限公司 | Dust removing/desulphurization equipment liner |
| CN106837875A (en) * | 2017-04-13 | 2017-06-13 | 广州市拓道流体设备技术有限公司 | A kind of abrasion-proof slurry pump pump housing |
| CN111089082A (en) * | 2018-10-24 | 2020-05-01 | 汉江弘源襄阳碳化硅特种陶瓷有限责任公司 | Wear-resistant silicon carbide ceramic volute |
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| CN103591049A (en) * | 2013-10-18 | 2014-02-19 | 宜兴市宙斯泵业有限公司 | Cracking-preventive wear-resistant centrifugal pump |
| CN103671266A (en) * | 2013-11-21 | 2014-03-26 | 宜兴市宙斯泵业有限公司 | Large-scale plastic-lining desulfuration circulating pump and manufacturing method thereof |
| CN106582466A (en) * | 2015-10-14 | 2017-04-26 | 江苏国强环保集团有限公司 | Dust removing/desulphurization equipment liner |
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| CN105736444A (en) * | 2016-04-01 | 2016-07-06 | 长江南京航道工程局 | Large mud pump shell adopting wear resisting cast iron insert and welding fixing method |
| CN106337831A (en) * | 2016-10-12 | 2017-01-18 | 合肥精创陶瓷设备科技有限公司 | High-technology ceramic pump body used for pump and manufacturing method thereof |
| CN106837875A (en) * | 2017-04-13 | 2017-06-13 | 广州市拓道流体设备技术有限公司 | A kind of abrasion-proof slurry pump pump housing |
| CN106837875B (en) * | 2017-04-13 | 2023-12-29 | 广州市拓道新材料科技有限公司 | Wear-resisting sediment stuff pump body |
| CN113167280A (en) * | 2017-10-12 | 2021-07-23 | 伟尔矿物澳大利亚私人有限公司 | Inlet component of slurry pump |
| CN111089082A (en) * | 2018-10-24 | 2020-05-01 | 汉江弘源襄阳碳化硅特种陶瓷有限责任公司 | Wear-resistant silicon carbide ceramic volute |
| CN113898611A (en) * | 2021-11-09 | 2022-01-07 | 安徽银龙泵阀股份有限公司 | Novel fluoroplastic alloy pump |
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