CN101451525A - High efficiency roller rotary pump - Google Patents
High efficiency roller rotary pump Download PDFInfo
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- CN101451525A CN101451525A CNA2007101915597A CN200710191559A CN101451525A CN 101451525 A CN101451525 A CN 101451525A CN A2007101915597 A CNA2007101915597 A CN A2007101915597A CN 200710191559 A CN200710191559 A CN 200710191559A CN 101451525 A CN101451525 A CN 101451525A
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Abstract
The present invention relates to a high efficient double-acting roller rotor pump characterized in that the radial section of the pump cavity is oval-shaped; two entrance ports and two exit ports are set in facing direction at the area near the intersect point of the long arc and short arc of the oval-shaped sectional pump cavity to make the rotor block rotates a lap and can realize secondary suction and discharge; efficiency can be improved about 20-25% comparing with single-action; axial direction eccentric force in pump running process can be equalized or mutually counteracted; bearing service life can be effectively prolonged. Besides, an anticorrosive coating is covered on the surface of the pump overflowing components, an unevenness to increase packing up block of the anchoring and/or an anchoring tortoise structure that embedded into the anticorrosive coating not only make the pump suck and send corrosive medium, expand the application range, and the anticorrosive coating not easy be peeled off or drop off, and can be used for transporting medium in certain temperature with actual use value.
Description
Technical field
The present invention is the improvement to roller rotary pump, especially relates to a kind of high efficiency double-action roller rotary pump, and has the double-action roller rotary pump of anti-corrosion function.
Background technique
Existing roller rotary pump as described in Chinese patent CN87209851, CN2284868, CN2381813, CN2418275 etc., all is a single-acting formula (Fig. 1) of having only a suction port and an exhaust port, and the every fortune of rotor body circles and can only do a suction.This structure roller pump, dynamic efficiency is relatively low; And because suction/exhousting hole is at corresponding relative position, it is consistent with the radial disbalance force direction that row produces to inhale the radial disbalance power that produces, when main shaft moves the eccentric force effect big, easily cause the damage of bearing.The disclosed roller rotary pump of Chinese patent CN2391032, though propose the pump housing the single outlet of many imports, single import multiple exit, many imports multiple exit can be arranged, pump cavity can be volute, annular, scroll, but rotor body rotates still transfiguration for once of a week, promptly can only do a suction, its many imports multiple exit only is axially to go up to increase, its objective is and shorten import and/or outlet flow process, can make roller pump axially obtain lengthening.
In addition, existing roller rotary pump, flow passage components substantially all are pure metal spares, decay resistance is relatively poor relatively, can not be used for the pumping of Korrosionsmedium, especially can not be used for the pumping of media such as the strong for example hydrochloric acid of corrosivity.The disclosed roller rotary pump of Chinese patent CN2344584, roller adopt stainless steel outsourcing plastic construction.The disclosed roller pump rotor of Chinese patent CN2380722 adopts the metal cartridge project to outsource plastics roller of being with the dovetail annular groove.But its anticorrosion roller that only relates to, pump chamber, pump cover, rotor body are still not corrosion-resistant, therefore can only be used for the less medium of corrosivity (dilute sulfuric acid, alkali lye) pumping equally, can not be used for the pumping of strong corrosive medias such as hydrochloric acid, cyanogen fluoric acid.And roller rolls between housing, rotor recesses for a long time and pushes, and as dried noodle cane dried noodle, lining (bag) anticorrosive coat is pushed by it, very easily produces to be out of shape to peel off to come off, and therefore is difficult to by obtaining anticorrosion structure as centrifugal pump lining mode; If adopt overall plastic structure, because assemblage gap requires minimum (for example less than 0.2mm) between rotor body, roller end face and the pump cover of roller rotary pump, and the thermal expansion of plastics is relatively large, in temperature environment (for example 50-80 ℃), use, plastics produce thermal expansion, axially big thermal distortion is expanded, and easily causes rotor body, roller and pump cover gap smaller again and stuck; Strengthen the gap, can cause the obvious decline of volumetric efficiency again; The employing anticorrosion alloy is made, though can make pump have better corrosion resistance, can cause increasing considerably of manufacture cost, and practical application is impossible.So there is not to occur really having the roller rotary pump of anti-corrosion function up to now.
Summary of the invention
The object of the invention is to overcome above-mentioned the deficiencies in the prior art, and a kind of transfer efficiency height is provided, the power without acceptance of persons that turns round, the high efficiency roller rotary pump of bearing long service life.
Another purpose of the present invention is to provide a kind of antiseptic property good, can carry the high efficiency roller rotary pump of various corrosivity strong mediums.
The present invention's first purpose realizes, the main improvement is to change the pump chamber radial cross section into ellipsoidal structure by existing circle, volute, scroll, and at (near four jiaos of places) near oval cross section long arc and the short arc intersection, subtend is provided with 2 imports and 2 outlets, make rotor body in the oval cross section pump chamber, rotate a circle, can produce twice transfiguration, by 2 imports and 2 outlets are set, can realize that rotor body rotates a circle produces 2 suctions, thereby improved the efficient of pump than the single suction, realized the object of the invention.Specifically, high efficiency roller rotary pump of the present invention, comprise that metal pump case and built-in circumferential surface have the rotor body of alternate axial notch, and the movable roller of putting into each groove of rotor body, it is characterized in that the pump chamber radial cross section is for oval, near the long arc of oval cross section pump chamber and the short arc intersection, subtend is provided with 2 imports and 2 outlets.
The pump chamber transverse is decided on the roller diameter, does not deviate from the rotor body groove at long axis direction and exceeds to guarantee roller.
2 imports and 2 outlets are provided with, a kind of import and export angle that makes the major axis two ends that is more preferably is 120-150 °, bigger angle, help strengthening import and exit separation from, thereby widen the high and low pressure offset from, reduce output zone of high pressure fluid to sucking backflowing of low pressure area, improve the volumetric efficiency of pump.
2 imports and 2 outlets, can be as common roller pump, be arranged on pump shaft to the intermediate portion, perhaps two side ends covers, if rotor body is axially longer, can also be respectively pump shaft to arrangement be provided with 2 groups or more than, or axially on intermediate portion and the both sides pump cover import and export are being set all simultaneously, reach and shorten the medium flow process.For helping being connected with outer connecting pipe, 2 imports and 2 outlets can be merged into 1 import and 1 outlet respectively, 2 imports and 2 outlets interconnect mode, it can be outer the connection, be about to be arranged at 2 imports and 2 outlets on axial centre or the end cap, connect into external 1 import and 1 outlet by pipeline respectively; Also can be can interconnective merging plate, and/or the interior connection of inner sleeve is set by 2 imports and 2 outlets are set outside end cap.In addition, can also make the cantilever structure of monolateral supporting, or the two supports structure.
Second purpose realizes, it is characterized in that at pump case surface of internal cavity, end cap inner surface the concavo-convex of anchoring coating and/or anchoring tortoise plastron being arranged, and the nonmetal anticorrosive coat that is covered in the surface; Rotor body has concavo-convex for the surface and/or the nonmetal anticorrosive coat of metal body outsourcing of anchoring tortoise plastron is arranged, and roller is the corrosion-proof type roller.
Pump chamber, end cover surface concavo-convex, main effect are to form mutual embedding linkage structure by the concavo-convex and lining that is capped the surface, reach enhancing to the solid effect of drawing of anticorrosion coating, alleviate roller radially roll extrusion that coating is produced tensile buckling is loosening.Concavo-convex can be groove, and its shape is not limit, and can be annular groove, also can be the axial groove that hoop distributes, or the groove of other form; The pit form also is not particularly limited; Projection can be convex partss such as the bar muscle, rivet of various protrusions.
The rotor body concave-convex surface, its effect is also similar with the concavo-convex effect of above-mentioned pump chamber, end cover surface.
The anchoring tortoise plastron is to be fixed in to be capped matrix and to embed tectal connection reinforcement, and its effect is the anchoring that further strengthens lining, and its form is not particularly limited, and can be but is not limited to as steel wire, holdfast etc.
The corrosion-proof type roller can be plastic roller, the bag polyurethane roller as prior art, can also be that linear expansion coeffcient is little, the non-metallic body roller of corrosion resistance and good, for example pottery, phenolic resin roller, and precious metal such as Hastelloy roller etc.Roller can be the circular cross-section structure of prior art, and a kind of better is that the roller cross section also is designed to ellipsoidal structure, and elliptical sectional structure helps the increase in chamber, thereby increases effective swept volume of pump chamber, can improve the pumping output flow.
The present invention is a kind of better to be, is being adopted concavo-convex simultaneously by clad surface and the anchoring tortoise plastron, forms the better anchorage effect of anticorrosion coating, with the extrusion stretching of effective opposing roller rolling press to lining, guarantees that the long-term use of coating does not come off.
The anticorrosive coat of flow passage components surface coverage, can be various corrosion resistant plastics, require difference according to corrosion, can be conventional plastics, fluoroplastic, ultra-high molecular weight polyethylene, and other functional plastics, can also be nonmetal anti-corrosion materials such as various anticorrosive anti-wear rubber, polyurethane, pottery.
Test shows: the inboard anticorrosive coat thickness of rotor body two ends and pump cover, and a kind of 2-12mm that is preferably, anticorrosive coat is thin excessively, then can influence antiseptic property, is worn easily and produces leak source; Anticorrosive coat is blocked up, then may cause anti-the expanding of heat to strengthen, and can influence the gap of rotor body end face and pump cover, easily causes expansion stuck.
In addition, between rotor body end face and pump cover, a kind of better is to have additional the little wear-resisting dividing plate of thermal expansion, be for example and without limitation to inlay and/or serve as a contrast and post ceramic ring flat-plate, can further guarantee pump cover and rotor body end face gap stability, and its excellent abrasion resistance, the long-term erosive wear of material can be born, can prevent that wearing and tearing from causing gap between two ends to increase, and causes pump volumetric efficiency to reduce.Wear-resisting dividing plate setting can be to add, and for example fixing going up in having changeed the body end face also can be to be one with pump cover, for example directly makes pump cover with pottery.If pump is imported and exported and is arranged on the pump cover, then wear-resisting dividing plate relevant position is provided with the turnover aperture.
For the pump cover internal surface wear-resisting dividing plate is arranged, if roller adopts the hard anticorrosive material, as pottery, anticorrosion alloy etc., a kind of better is in each roller both ends of the surface soft wear-resisting cushion block to be set, to reduce wearing and tearing and the bump between roller and wear-resisting dividing plate.
The rotor body end face, a kind of being more preferably is inlaid with replaceable radial evagination spoke (plane, protruding end), this structure, can be after the evagination spoke be worn, embed evagination spoke (and need not change rotor body) by changing, realize guaranteeing gap between rotor body end face and pump cover, reduce maintenance cost; In addition, this structure also is rotor body and pump cover selection, provides convenience, and has enlarged range of choice.
Roller rotary pump of the present invention, a kind of being more preferably is designed to replaceable structure with pump chamber, be about to pump chamber and be designed to an independent ring set, insert in the pump case inner chamber, like this after the pump chamber wearing and tearing, only need to change the pump chamber ring set, and can keep the continuation of miscellaneous part to use, reduction is used, maintenance cost thereby reach.
High efficiency roller rotary pump of the present invention, owing to change the pump chamber radial cross section into ellipse by circle, volute, scroll, and near the long arc and short arc intersection of oval cross section, subtend is provided with 2 imports and 2 outlets, make rotor body rotate a circle, can realize the secondary suction, improved the transfer efficiency of pump greatly, efficient can improve about 20-25% than single-acting, and opposed 2 imports and 2 outlets, axial eccentric force in the also balanced or pump operation process of having cancelled out each other, rotating shaft is stress substantially without acceptance of persons, has effectively prolonged bearing working life.In addition, increase the anchoring tortoise plastron structure of the concavo-convex of anchoring lining and/or embedding anticorrosive coat on pump flow passage components surface, the feasible anticorrosive coat that is covered in wetted surfaces, with be capped matrix anti-take off to be connected be enhanced so that the long-term roll extrusion of roller is laminated with also difficult drop-off of anticorrosive coat, prolonged anticorrosion coating working life, effectively overcome because of roller to the long-term roll extrusion of clad surface, coating is produced extruding, easily cause coating to produce distortion and peel off the deficiency that comes off, and have actual use value; Increase anticorrosion coating, can make roller rotary pump adapt to Korrosionsmedium, the particularly conveying of strong corrosive media such as example hydrochloric acid, the concentrated sulphuric scid, enlarged the using scope of roller pump, for example some original roller pumps can not use, and anticorrosion centrifugal pump is difficult to the application, as transport Korrosionsmedium vehicle storage tank bring down stocks, sweep the storehouse, can improve conveying efficiency.Anchoring coating concavo-convex and/or the anchoring tortoise plastron structure that embeds in addition, it is unfavorable to the thermal expansion that coating produces to overcome temperature, has reduced the expanded by heating of coating, can make anticorrosion roller rotary pump be used to carry the medium with uniform temperature.
Below in conjunction with several embodiments, further specify and help to understand the present invention's design.
Description of drawings
Fig. 1 is a prior art roller rotary pump structural representation.
Fig. 2 is a first embodiment of the invention roller rotary pump structural representation.
Fig. 3 is Fig. 2 liquid in-out mouth connection diagram.
Fig. 4 is a second embodiment of the invention roller rotary pump structural representation.
Fig. 5 is laminated with the anti-corrosion layer structure schematic representation for Fig. 4 overcurrent position.
Fig. 6 is a third embodiment of the invention roller rotary pump structural representation.
Fig. 7 is a fourth embodiment of the invention roller rotary pump structural representation.
Fig. 8 is a fifth embodiment of the invention roller construction schematic representation.
Fig. 9 is a sixth embodiment of the invention rotor body end face structural representation.
Figure 10 is Fig. 9 axial arrangement schematic representation.
Figure 11 is a seventh embodiment of the invention roller rotary pump structural representation.
Figure 12 is an eighth embodiment of the invention roller rotary pump structural representation.
Figure 13 is Figure 12 import and outlet connecting end plate structure schematic representation.
Figure 14 is Figure 13 left view.
Figure 15 is a ninth embodiment of the invention roller rotary pump structural representation.
Figure 16 discharges the nested structure schematic representation for Figure 15 liquid.
Figure 17 is the axial sectional structure chart of Figure 16.
Embodiment
Embodiment 1: referring to Fig. 2,3, high efficiency roller rotary pump of the present invention, metal pump case 1 radial cross section 4 ovalizes, near the long arc of oval cross section and the short arc intersection (near four jiaos of places), subtend is provided with 2 imports 5.1 and 5.2, and 2 outlets 6.1 and 6.2, and wherein the import and export angle α at major axis two ends is 150 °, 2 imports and 2 outlets are connected to an external import 5 and an outlet 6 by external pipe; There is side face that the rotor body 3 of alternate axial notch is arranged in the pump chamber, movable ceramic roller 2 is arranged in each groove.
Embodiment 2: referring to Fig. 4,5, as described above, pump chamber and both sides end cap (not shown) internal surface are processed with the axial notch 10 of anchoring lining, surface soldered has steel wire 9, by mold pressing lining ultra-high molecular weight polyethylene anticorrosive coat 8.1, rotor body 3 constitutes the corrosion-proof type roller rotary pump for the metal-cored outer anticorrosive coat 8.2 that is covered with of surperficial dentation.
Embodiment 3: referring to Fig. 6, as described above, each roller 2.1 cross section is oval structure, and groove cross section, respective rotor surface is rectangular or ellipse.
Embodiment 4: referring to Fig. 7, as described above, ceramic wear-resisting liner plate 11 is arranged between rotor body end face and pump cover.
Embodiment 5: referring to Fig. 8, as embodiment 4, the surface is coated with the roller 2 of corrosion resistant layer, and end face is inlaid with rubber wear-resisting pad 12.
Embodiment 6: referring to Fig. 9,10, as described above, rotor body 3 end faces radially have radial groove, are inlaid with the evagination spoke 13 on plane, protruding end in each groove, and wherein spoke 13 center-side have the anti-crotch 14 that radially throws away.
Embodiment 7: referring to Figure 11, as described above, the pump housing 1 inner chamber is inlaid with replaceable plastics pump chamber cover 15, makes the pump chamber of roller rotary pump be replaceable structure.
Embodiment 8: referring to Figure 12,13,14, as described above, roller rotary pump of the present invention is single-ended supporting extension arms structure (also can be two supports), 2 imports and 2 outlets, be arranged at axial pump cover end face (end is imported and exported), pump cover has import and outlet to merge (two-in-one) plate 16 and outer end cap outward, makes pump externally be 1 import and 1 export structure.Import and outlet merge plate 16, for the plate body two sides has radial groove 17 and 18 (also can be other crooked grooves) respectively, groove is communicated with 2 upper inlets and 2 outlet contrapositions on the end cap respectively, 2 imports and 2 outlets are communicated with by groove respectively, and respectively there are outer outlet 17.1 (not shown) and 18.1 that are communicated with groove 17 and 18 1 ends.
Embodiment 9: referring to Figure 15,16,17, and for axial longer roller rotary pump, can also be at the pump chamber lining of inlaying 19,2 imports in corresponding end and 2 exit positions on the wall thickness are processed with and axially are used to through hole 20, and there is the liquid in-out gap at the through hole two ends.Like this pump shaft to the left liquid inlet and outlet directly by being arranged at the inlet/outlet passage of end; The liquid inlet and outlet on right side then enter the lining axial hole by the right side gap, are communicated with the left part inlet/outlet by axial hole, merge plate 16 by import and outlet at last and externally connect.
In addition, lining is moulded the connection groove and can also be adopted pit to substitute, and the foregoing description supplementary features can be not limited to embodiment and cooperate, and carry out any combination of interactions.
Claims (13)
1, high efficiency roller rotary pump, comprise that metal pump case and built-in circumferential surface have the rotor body of alternate axial notch, and the movable roller of putting into each groove of rotor body, it is characterized in that the pump chamber radial cross section is for oval, near the long arc of oval cross section pump chamber and the short arc intersection, subtend is provided with 2 imports and 2 outlets.
2, according to the described high efficiency roller rotary pump of claim 1, it is characterized in that pump case surface of internal cavity, end cap inner surface, the concavo-convex of anchoring coating and/or anchoring tortoise plastron are arranged, and the nonmetal anticorrosive coat that is covered in the surface; Rotor body has concavo-convex for the surface and/or the nonmetal anticorrosive coat of metal body outsourcing of anchoring tortoise plastron is arranged, and roller is the corrosion-proof type roller.
3,, it is characterized in that pump case surface of internal cavity, end cap inner surface, rotor body surface have concavo-convex and the anchoring tortoise plastron according to the described high efficiency roller rotary pump of claim 2.
4,, it is characterized in that the inboard anticorrosive coat thickness of rotor body two ends and pump cover is 2-12mm according to the described high efficiency roller rotary pump of claim 2.
5,, it is characterized in that the wear-resisting dividing plate that has thermal expansion little between rotor body end face and pump cover according to the described high efficiency roller rotary pump of claim 2.
6,, it is characterized in that the roller both ends of the surface are embedded with soft wear-resistant block according to the described high efficiency roller rotary pump of claim 5.
7,, it is characterized in that the import and export angle at transverse two ends is 120-150 ° according to claim 1,2,3,4,5 or 6 described high efficiency roller rotary pumps.
8, according to claim 1,2,3,4,5 or 6 described high efficiency roller rotary pumps, it is characterized in that the roller cross section for oval, rotor body surface groove cross section is rectangular or ellipse.
9,, it is characterized in that the rotor body end face is inlaid with replaceable radial evagination spoke according to claim 1,2,3,4,5 or 6 described high efficiency roller rotary pumps.
10,, it is characterized in that pump housing inner chamber is inlaid with removable pump chamber cover according to claim 1,2,3,4,5 or 6 described high efficiency roller rotary pumps.
11, according to claim 1,2,3,4,5 or 6 described high efficiency roller rotary pumps, it is characterized in that 2 imports and 2 outlets are arranged on axial pump cover end face, there are import and outlet to merge plate and outer end cap outward, import and outlet merge the plate two sides the groove that is communicated with 2 imports and 2 outlets respectively, and each groove one end has the outer outlet that is communicated with.
12, according to the described high efficiency roller rotary pump of claim 11, it is characterized in that pump housing inner chamber is inlaid with removable pump chamber cover, 2 imports in corresponding end and 2 exit positions have and axially are used to through hole on the pump chamber sleeve wall thickness, and there is the liquid in-out gap at the through hole two ends.
13,, it is characterized in that roller rotary pump is a cantilever structure according to the described high efficiency roller rotary pump of claim 12.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007101915597A CN101451525A (en) | 2007-12-09 | 2007-12-09 | High efficiency roller rotary pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007101915597A CN101451525A (en) | 2007-12-09 | 2007-12-09 | High efficiency roller rotary pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101451525A true CN101451525A (en) | 2009-06-10 |
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ID=40733954
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2007101915597A Pending CN101451525A (en) | 2007-12-09 | 2007-12-09 | High efficiency roller rotary pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101451525A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102996438A (en) * | 2012-12-20 | 2013-03-27 | 王荣花 | Submersible ball piston pump |
| CN104832427A (en) * | 2015-05-24 | 2015-08-12 | 浙江爱贝尔液压设备有限公司 | Variable hydraulic pump |
| CN106017199A (en) * | 2016-07-27 | 2016-10-12 | 王鼎兴 | Pump for shell-and-tube heat exchanger |
-
2007
- 2007-12-09 CN CNA2007101915597A patent/CN101451525A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102996438A (en) * | 2012-12-20 | 2013-03-27 | 王荣花 | Submersible ball piston pump |
| CN104832427A (en) * | 2015-05-24 | 2015-08-12 | 浙江爱贝尔液压设备有限公司 | Variable hydraulic pump |
| CN106017199A (en) * | 2016-07-27 | 2016-10-12 | 王鼎兴 | Pump for shell-and-tube heat exchanger |
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Open date: 20090610 |