CN203081859U - Vertical type double-cylinder-body multilevel split centrifugal pump - Google Patents
Vertical type double-cylinder-body multilevel split centrifugal pump Download PDFInfo
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- CN203081859U CN203081859U CN 201220641139 CN201220641139U CN203081859U CN 203081859 U CN203081859 U CN 203081859U CN 201220641139 CN201220641139 CN 201220641139 CN 201220641139 U CN201220641139 U CN 201220641139U CN 203081859 U CN203081859 U CN 203081859U
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Abstract
Provided is a vertical type double-cylinder-body multilevel split centrifugal pump. According to the vertical type double-cylinder-body multilevel split centrifugal pump, a locating sleeve is arranged inside a pump body below a pump cover, a pump shaft which penetrates through the pump cover penetrates through an inducer, a first-level middle section assembly, middle section assemblies, a final-level middle section upper cover and a central through hole of a closed impeller from top to bottom in sequence, and a shaft head locking sleeve is arranged at the lower end of the pump shaft. The first-level middle section assembly comprises an upper cover, a first-level impeller, a flow guiding section and a first-level middle section base. The first-level middle section base and an upper cover of a next level middle section assembly are connected into a whole, each middle section assembly comprises a middle section upper cover, a closed impeller, a flow guiding section and a middle section base, and multilevel impellers are formed by a plurality of impellers of a plurality of middle section assemblies. The final-level middle section upper cover and a former level middle section base are connected into a whole, a final-level middle section assembly comprises the final-level middle section upper cover, a closed impeller, a flow guiding section and a final-level middle section base, a groove in the middle of the final-level flow guiding section is closed, the final-level middle section base is arranged at the bottom of a pump case, and a central through hole, namely a liquid discharging outlet, of the final-level middle section base corresponds to a liquid discharging outlet. The vertical type double-cylinder-body multilevel split centrifugal pump can reduce difficulty of casting and is high in production efficiency.
Description
Technical fieldThe utility model relates to a kind of centrifugal pump, the centrifugal pump that low temperature liquid oxygen, liquid nitrogen are carried in the compression process air separation facility in particularly a kind of being suitable for.
Background techniqueAlong with the development of air separation technology, in interior compression process air separation facility, equipment such as cancellation oxygenerator, nitrogen compressor, the conveying of oxygen, nitrogen, argon becomes liquid the conveying by gaseous state.Because above-mentioned liquid temperature lower (liquid oxygen-183 ℃, liquid nitrogen-196 ℃, liquid argon-186 ℃) when flow is big, is had relatively high expectations to material, structure, installation and the dismounting etc. of equipment, therefore needs special transporting low temperature liquid oxygen, Liquid Nitrogen Centrifugal Pump.The existing at present centrifugal pump that meets above-mentioned requirements, it as application number 2012201281988 Chinese patent, its main structure is: the coupling that links to each other with pump shaft is located on the electric machine support, and the support lower end links to each other with base plate on being located at the pump housing, is provided with the pump cover that links to each other with pump housing upper shed in this base plate.This pump housing top is respectively equipped with liquid suction port and gas outlet, pump housing bottom is provided with the liquid outlet, above-mentioned pump shaft passes pump cover from top to bottom successively, sucks the center hole in letter body, chopped-off head stage casing, import linkage section, stage casing, impeller and final stage stage casing, and the lower end is fastening by axis head nut.Be provided with sealed member between pump shaft and the pump cover, be provided with impeller assembly identical and folded up and down sieve on the pump shaft below first stage impeller, the outlet linkage section is provided with through hole, and the leading screw lower end of passing this through hole is fastened on the outlet linkage section by fastening piece, and the upper end links to each other with the import linkage section.Above-mentioned outlet linkage section central through bore links to each other with the fluid output of pump by honeycomb duct.Its deficiency is: integrative-structure is adopted in stator and stage casing, at different levels in intersegmental employing rod connect, make the casting difficulty big, manufacturing efficiency is low.
Summary of the inventionThe purpose of this utility model is to provide a kind of multistage split centrifugal pump of vertical double shell that reduces casting difficulty, manufacturing efficiency height, special transporting low temperature liquid oxygen, liquid nitrogen.The utility model mainly includes pump shaft, pump cover, the pump housing, inducer, head, final stage stage casing assembly, stage casing assembly, electric machine support and black box.Wherein pump shaft is preferably hollow, and its upper end links to each other with rigid coupling, and this rigid coupling that can link to each other with motor drive shaft upper end is located on the electric machine support top board, and corresponding with its central through bore.Rack plate links to each other with following annular bottom plate, is that heat insulation loop links to each other by cylinder preferably.This annular bottom plate is provided with in the middle of placing on the backing plate with the corresponding through hole of pump cover, upper shed circular groove shape pump cover passes the central through bore of backing plate and places in the tubular pump housing upper shed of back cover, the flange of pump housing upper shed then is positioned under the backing plate, the flange of pump cover then places on the through hole of backing plate, and both link to each other by the fastening piece in the corresponding through hole.The central through bore of pump cover has pump shaft to pass, and black box main body between the two is located on the pump cover.The pump housing below the pump cover is provided with the liquid suction port, and pump housing bottom is provided with the liquid outlet.Be provided with the adjacent circular orientation cover of outer circumferential face and pump case in the pump housing below pump cover, this locatees the sheathed through hole corresponding with the liquid suction port, the lower end of this setting sleeve place the chopped-off head stage casing on cover.The above-mentioned pump shaft that passes pump cover passes the central through bore of inducer, chopped-off head stage casing assembly, each stage casing assembly and final stage stage casing loam cake and double shrouded wheel from top to bottom successively, the lower end is provided with the spindle nose lock sleeve corresponding with it, the last slotted eye of this spindle nose lock sleeve covers on the pump shaft lower end, the interior axial screw of the bolt upper end of passing the lock sleeve central through bore and pump shaft is threaded, best, bolt head is positioned at slotted eye under the lock sleeve.Be provided with the wheel hub of inducer on the pump shaft below pump cover between setting sleeve, this wheel hub links to each other with wheel rim by disc, is provided with perpendicular continuous some guide plates on wheel rim, is used to guide flowing of inlet liquid.Above-mentioned inducer lower end place the chopped-off head stage casing on cover, both are flexibly connected by fastening piece.This chopped-off head stage casing loam cake is outer circumferential face, inside and double shrouded wheel top profile corresponding annular solid adjacent with pump case, be provided with wheel hub below this chopped-off head stage casing loam cake and be enclosed within first stage impeller on the pump shaft, the liquid entering hole of this first stage impeller is located in the central through bore of chopped-off head stage casing loam cake, establishes preceding impeller port ring between the two.Below first stage impeller, be provided with the annular solid diversion section, establish in this diversion section and first stage impeller low profile corresponding groove, be provided with the back impeller port ring between the ring bodies of this groove walls and first stage impeller bottom, the central through bore that is enclosed within on the pump shaft is established at the middle part at the bottom of this groove, preferably establishes axle sleeve between the two.On this diversion section, establish the plurality of vertical screw, the screw lower end that is located in the screw is located on the base of chopped-off head stage casing, chopped-off head stage casing base in this can be included in diversion section is the upper shed trough-shaped body, its outer circumferential face and pump case are adjacent, its upper shed links to each other with the limit, lower end of chopped-off head stage casing loam cake, and its central through bore is that liquid port is corresponding with next stage impeller liquid entering hole.Above-mentioned chopped-off head stage casing loam cake, double shrouded wheel, diversion section and chopped-off head stage casing base constitute chopped-off head stage casing assembly.Chopped-off head stage casing base and next stage stage casing loam cake are connected as a single entity, be provided with the double shrouded wheel that is enclosed within on the pump shaft in this stage casing loam cake, be provided with corresponding below this impeller and be enclosed within diversion section on the pump shaft with it, this diversion section links to each other with the stage casing base by screw again, this stage casing base links to each other with next stage stage casing loam cake again, by that analogy, be provided with some identical and stage casing assemblies of stacking up and down on the pump shaft below the assembly of chopped-off head stage casing, its double shrouded wheel is identical with the chopped-off head stage casing with base, only be that the stage casing upper cover top surface will be connected as a single entity with upper level stage casing base, they constitute multi-stage impeller.Best, between two adjacent on pump shaft stage casing assemblies, be provided with inter-stage axle sleeve and inter-stage spacer.Final stage stage casing loam cake is identical with the stage casing loam cake to be connected as a single entity with upper level stage casing base, be provided with the identical double shrouded wheel that is enclosed within on the pump shaft in this final stage stage casing loam cake, be provided with the final stage diversion section corresponding below this impeller with it, the groove sealing at this final stage diversion section middle part is provided with spindle nose lock sleeve and bolt above it.On final stage stage casing base places at the bottom of the pump case, still be the upper shed trough-shaped body, its outer circumferential face and pump case are adjacent, and its upper shed links to each other with the limit, lower end of final stage stage casing loam cake, and its central through bore is that outage is corresponding with the pump case liquid port.Above-mentioned final stage stage casing loam cake, double shrouded wheel, diversion section and final stage stage casing base constitute final stage stage casing assembly.
The utility model also has following advantage except that having advantage same as the prior art:
1, impeller, diversion section and stage casing split design have reduced the casting difficulty, the manufacturing efficiency height.
2, the fluid input place of pump case sets up inducer, has improved the anti-cavitation ability of pump.
3, electric machine support is established heat insulation loop, increases adiabatic coefficient.
4, being provided with auxiliary bearing between the assembly of two-stage stage casing makes unit vibration little.
Description of drawings
Fig. 1 is that the utility model master looks generalized section.
EmbodimentLook in the generalized section the multistage split centrifugal pump of vertical double shell master shown in Figure 1, wherein pump shaft 1 upper end links to each other with rigid coupling 2, this rigid coupling that can link to each other with motor drive shaft upper end is located on the electric machine support top board 3, and corresponding with its central through bore.Be provided with perpendicular continuous heat insulation loop 4 below the rack plate, the lower end of this heat insulation loop and 5 vertical linking to each other of annular bottom plate.This annular bottom plate is provided with in the middle of placing on the backing plate 6 with the corresponding through hole of pump cover, upper shed circular groove shape pump cover 7 passes the central through bore of backing plate and places in the tubular pump housing 8 upper sheds of back cover, the flange of pump housing upper shed then is positioned under the backing plate, the flange of pump cover then places on the through hole of backing plate, and both link to each other by the fastening piece in the corresponding through hole.The central through bore of pump cover has pump shaft to pass, and black box main body between the two is located on the pump cover.The pump housing below the pump cover is provided with liquid suction port 9, and pump housing bottom is provided with liquid outlet 10.Be provided with the adjacent circular orientation cover 11 of outer circumferential face and pump case in the pump housing below pump cover, this locatees the sheathed through hole corresponding with the liquid suction port, and the lower end of this setting sleeve places on the loam cake 12 in chopped-off head stage casing.The above-mentioned pump shaft that passes pump cover passes the central through bore of inducer 13, chopped-off head stage casing assembly, each stage casing assembly and final stage stage casing loam cake and double shrouded wheel from top to bottom successively, the lower end is provided with the spindle nose lock sleeve 14 corresponding with it, the last slotted eye of this spindle nose lock sleeve covers on the pump shaft lower end, bolt 15 upper ends of passing the lock sleeve central through bore are threaded with axial screw in the pump shaft, and bolt head is positioned at slotted eye under the lock sleeve.Be provided with the wheel hub of inducer on the pump shaft below pump cover between setting sleeve, this wheel hub links to each other with wheel rim by disc, is provided with perpendicular continuous some guide plates 16 on wheel rim.Above-mentioned inducer lower end place the chopped-off head stage casing on cover, both are flexibly connected by fastening piece.This chopped-off head stage casing loam cake is outer circumferential face, inside and double shrouded wheel top profile corresponding annular solid adjacent with pump case, be provided with wheel hub below this chopped-off head stage casing loam cake and be enclosed within first stage impeller 17 on the pump shaft, the liquid entering hole of this first stage impeller is located in the central through bore of chopped-off head stage casing loam cake, impeller port ring 18 before establishing between the two.Below first stage impeller, be provided with annular solid diversion section 19, establish in this diversion section and first stage impeller low profile corresponding groove, be provided with back impeller port ring 20 between the ring bodies of this groove walls and first stage impeller bottom, the central through bore that is enclosed within on the pump shaft is established at the middle part at the bottom of this groove, establishes axle sleeve 21 between the two.On this diversion section, establish the plurality of vertical screw, screw 22 lower ends that are located in the screw are located on the chopped-off head stage casing base 23, chopped-off head stage casing base in this can be included in diversion section is the upper shed trough-shaped body, its outer circumferential face and pump case are adjacent, its upper shed links to each other with the limit, lower end of chopped-off head stage casing loam cake, and its central through bore is that liquid port is corresponding with next stage impeller liquid entering hole.Above-mentioned chopped-off head stage casing loam cake, double shrouded wheel, diversion section and chopped-off head stage casing base constitute chopped-off head stage casing assembly.Chopped-off head stage casing base and next stage stage casing loam cake 24 are connected as a single entity, be provided with the double shrouded wheel 25 that is enclosed within on the pump shaft in this stage casing loam cake, be provided with corresponding below this impeller and be enclosed within diversion section 26 on the pump shaft with it, this diversion section links to each other with stage casing base 27 by screw again, this stage casing base links to each other with next stage stage casing loam cake again, by that analogy, be provided with some identical and stage casing assemblies of stacking up and down on the pump shaft below the assembly of chopped-off head stage casing, they constitute multi-stage impeller.Between two adjacent on pump shaft stage casing assemblies, be provided with inter-stage axle sleeve 28 and inter-stage spacer 29.Final stage stage casing loam cake 30 is connected as a single entity with upper level stage casing base, be provided with the double shrouded wheel 31 that is enclosed within on the pump shaft in this final stage stage casing loam cake, be provided with the final stage diversion section 32 corresponding with it below this impeller, the groove sealing at this final stage diversion section middle part is provided with spindle nose lock sleeve and bolt above it.On final stage stage casing base 33 places at the bottom of the pump case, be the upper shed trough-shaped body, its outer circumferential face and pump case are adjacent, and its upper shed links to each other with the limit, lower end of final stage stage casing loam cake, and its central through bore is that outage is corresponding with the pump case liquid port.Above-mentioned final stage stage casing loam cake, double shrouded wheel, diversion section and final stage stage casing base constitute final stage stage casing assembly.
Claims (9)
1. multistage split centrifugal pump of vertical double shell, wherein the pump shaft upper end links to each other with rigid coupling, this rigid coupling that can link to each other with motor drive shaft upper end is located on the electric machine support top board, and it is corresponding with its central through bore, rack plate links to each other with following annular bottom plate, this annular bottom plate is provided with in the middle of placing on the backing plate with the corresponding through hole of pump cover, upper shed circular groove shape pump cover passes the central through bore of backing plate and places in the tubular pump housing upper shed of back cover, the central through bore of pump cover has pump shaft to pass, black box main body between the two is located on the pump cover, the pump housing below the pump cover is provided with the liquid suction port, pump housing bottom is provided with the liquid outlet, it is characterized in that: be provided with the adjacent circular orientation cover of outer circumferential face and pump case in the pump housing below pump cover, this locatees the sheathed through hole corresponding with the liquid suction port, the lower end of this setting sleeve place the chopped-off head stage casing on cover, the above-mentioned pump shaft that passes pump cover passes inducer from top to bottom successively, chopped-off head stage casing assembly, the central through bore of each stage casing assembly and final stage stage casing loam cake and double shrouded wheel, the lower end is provided with the spindle nose lock sleeve corresponding with it, the last slotted eye of this spindle nose lock sleeve covers on the pump shaft lower end, the interior axial screw of the bolt upper end of passing the lock sleeve central through bore and pump shaft is threaded, be provided with the wheel hub of inducer on the pump shaft below pump cover between setting sleeve, this wheel hub links to each other with wheel rim by disc, on wheel rim, be provided with perpendicular continuous guide plate, above-mentioned inducer lower end place the chopped-off head stage casing on cover, both are flexibly connected by fastening piece, be provided with wheel hub below this chopped-off head stage casing loam cake and be enclosed within first stage impeller on the pump shaft, the liquid entering hole of this first stage impeller is located in the central through bore of chopped-off head stage casing loam cake, establish preceding impeller port ring between the two, below first stage impeller, be provided with the annular solid diversion section, on this diversion section, establish vertical screw, the screw lower end that is located in the screw is located on the base of chopped-off head stage casing, above-mentioned chopped-off head stage casing loam cake, double shrouded wheel, diversion section and chopped-off head stage casing base constitute chopped-off head stage casing assembly, chopped-off head stage casing base and next stage stage casing loam cake are connected as a single entity, be provided with the double shrouded wheel that is enclosed within on the pump shaft in this stage casing loam cake, be provided with corresponding below this impeller and be enclosed within diversion section on the pump shaft with it, this diversion section links to each other with the stage casing base by screw again, this stage casing base links to each other with next stage stage casing loam cake again, by that analogy, be provided with stage casing assembly identical and that stack up and down on the pump shaft below the assembly of chopped-off head stage casing, they constitute multi-stage impeller, final stage stage casing loam cake still is connected as a single entity with upper level stage casing base, still be provided with the double shrouded wheel that is enclosed within on the pump shaft in this final stage stage casing loam cake, be provided with the final stage diversion section corresponding below this impeller with it, the groove sealing at this final stage diversion section middle part, be provided with spindle nose lock sleeve and bolt above it, on final stage stage casing base places at the bottom of the pump case, its central through bore is that outage is corresponding with the pump case liquid port, above-mentioned final stage stage casing loam cake, double shrouded wheel, diversion section and final stage stage casing base constitute final stage stage casing assembly.
2. the multistage split centrifugal pump of vertical double shell according to claim 1 is characterized in that: chopped-off head stage casing loam cake is outer circumferential face, inside and double shrouded wheel top profile corresponding annular solid adjacent with pump case.
3. the multistage split centrifugal pump of vertical double shell according to claim 1, it is characterized in that: establish in the diversion section and first stage impeller low profile corresponding groove, be provided with the back impeller port ring between the ring bodies of this groove walls and first stage impeller bottom, the central through bore that is enclosed within on the pump shaft is established at the middle part at the bottom of this groove.
4. the multistage split centrifugal pump of vertical double shell according to claim 1, it is characterized in that: the chopped-off head stage casing base in diversion section can being included in is the upper shed trough-shaped body, its outer circumferential face and pump case are adjacent, its upper shed links to each other with the limit, lower end of chopped-off head stage casing loam cake, and its central through bore is that liquid port is corresponding with next stage impeller liquid entering hole.
5. the multistage split centrifugal pump of vertical double shell according to claim 4 is characterized in that: final stage stage casing base still is the upper shed trough-shaped body, and its outer circumferential face and pump case are adjacent, and its upper shed links to each other with the limit, lower end of final stage stage casing loam cake.
6. the multistage split centrifugal pump of vertical double shell according to claim 1 is characterized in that: be provided with inter-stage axle sleeve and inter-stage spacer between two adjacent on pump shaft stage casing assemblies.
7. the multistage split centrifugal pump of vertical double shell according to claim 3 is characterized in that:
Diversion section central through bore and pump shaft are established axle sleeve between the two.
8. the multistage split centrifugal pump of vertical double shell according to claim 1, it is characterized in that: the flange of pump housing upper shed is positioned under the backing plate, and the flange of pump cover places on the through hole of backing plate, and both link to each other by the fastening piece in the corresponding through hole.
9. the multistage split centrifugal pump of vertical double shell according to claim 1 is characterized in that: rack plate is that heat insulation loop links to each other with following annular bottom plate by cylinder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220641139 CN203081859U (en) | 2012-11-29 | 2012-11-29 | Vertical type double-cylinder-body multilevel split centrifugal pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220641139 CN203081859U (en) | 2012-11-29 | 2012-11-29 | Vertical type double-cylinder-body multilevel split centrifugal pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203081859U true CN203081859U (en) | 2013-07-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220641139 Expired - Fee Related CN203081859U (en) | 2012-11-29 | 2012-11-29 | Vertical type double-cylinder-body multilevel split centrifugal pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203081859U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104265640A (en) * | 2014-09-30 | 2015-01-07 | 大福泵业有限公司 | Efficient deep well submersible pump |
| CN114876809A (en) * | 2022-04-18 | 2022-08-09 | 宜兴市宙斯泵业有限公司 | Two-stage vertical side suction pump |
-
2012
- 2012-11-29 CN CN 201220641139 patent/CN203081859U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104265640A (en) * | 2014-09-30 | 2015-01-07 | 大福泵业有限公司 | Efficient deep well submersible pump |
| CN114876809A (en) * | 2022-04-18 | 2022-08-09 | 宜兴市宙斯泵业有限公司 | Two-stage vertical side suction pump |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130724 Termination date: 20191129 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |