CN204386893U - Self-balanced multiple-stage centrifugal pump - Google Patents
Self-balanced multiple-stage centrifugal pump Download PDFInfo
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- CN204386893U CN204386893U CN201520000093.8U CN201520000093U CN204386893U CN 204386893 U CN204386893 U CN 204386893U CN 201520000093 U CN201520000093 U CN 201520000093U CN 204386893 U CN204386893 U CN 204386893U
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 79
- 238000013461 design Methods 0.000 claims abstract description 11
- 230000008878 coupling Effects 0.000 claims abstract description 3
- 238000010168 coupling process Methods 0.000 claims abstract description 3
- 238000005859 coupling reaction Methods 0.000 claims abstract description 3
- 230000007935 neutral effect Effects 0.000 claims abstract description 3
- 238000012423 maintenance Methods 0.000 abstract description 4
- 238000007789 sealing Methods 0.000 description 6
- 238000004519 manufacturing process Methods 0.000 description 5
- 230000008901 benefit Effects 0.000 description 3
- 238000009434 installation Methods 0.000 description 3
- 238000012856 packing Methods 0.000 description 3
- 239000012530 fluid Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000008520 organization Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000002146 bilateral effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
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Abstract
Self-balanced multiple-stage centrifugal pump, comprises the pump housing, impeller, pump shaft and Y-pipe, wherein, is suction chamber in the middle part of pump housing inner chamber, and both sides are multi-stage impeller room, shaft seal mouth and pump shaft mount inlet successively, and the water intake of rear class blade wheel chamber is communicated with the water outlet of prime blade wheel chamber; On the left side bearing that pump shaft is rotatably installed in pump housing inner chamber two ends and right side bearing, outer end is connected with motor by coupling; Multi-stage impeller by connecting key and pump shaft affixed; Water absorbing section design is in pump housing inner chamber neutral position, and the suction chamber of water absorbing section communicates with left and right two one stage impeller water intakes, and the horizontal water sucking mouth of water absorbing section is arranged on substantially horizontal, connects outward with suction sleeve; Left water exit end, right water exit end are arranged in position, two impeller rooms, and the drain opening position of two water exit ends is all form vertically upward.Avoid side water suction self-balanced multiple-stage centrifugal pump axial thrust balancing and the larger problem of current flow losses in the pump housing; Structure is simple, and efficiency is high, failure rate is low, manufactures easy maintenance.
Description
Technical field
The utility model belongs to a kind of self-balanced multiple-stage centrifugal pump.
Background technique
Self-balanced multiple-stage centrifugal pump is a kind of multistage centrifugal pump being arranged symmetrically with impeller that development in recent years is got up, and has more advantages.The type water pump vane is arranged symmetrically with, and has the feature of self balancing, can eliminate end thrust.The self-balanced multiple-stage centrifugal pump of existing production and use generally divides single suction and double suction two kinds.Generally be made up of the part such as inlet segment, stage casing, water exit end, secondary inlet segment, guide vane, return guide vane, positive impeller, anti-impeller, axle, throttling, decompressor, interstage sleeve, bearing support, transition tube.Major defect is complex structure, and particularly for the one-sided water inlet self balancing pump housing, inner flow passage is more complicated, and when fluid flows in the pump housing, loss is comparatively large, and reduce the efficiency of water pump to a certain extent, manufacture cost is also higher.On-stream, usually there is end thrust, this end thrust makes final stage rotor axial move, and must manage balance and pump just can be made normally to work, and usually needs to adopt Equilibrator with balancing axial thrust.In addition, no matter one-sided or bilateral water inlet, in water suction side sealing, except adopting machinery or packing seal, also must coordinate press water to seal, carry out shaft seal, seal structure complex to water pump.In use, although than single-suction multistage centrifugal pump failure rate is low, due to complex structure and Equilibrator and sealing structure for water, maintenance is larger.
Summary of the invention
The purpose of this utility model is open a kind of self-balanced multiple-stage centrifugal pump, to solve existing self-balanced multiple-stage centrifugal pump complex structure, particularly for the one-sided water inlet self balancing pump housing, inner flow passage is more complicated, when fluid flows in the pump housing, loss is larger, reduce the efficiency of water pump, manufacture cost is more high deficiency also.
Technological scheme:
Self-balanced multiple-stage centrifugal pump, comprises the pump housing, impeller, pump shaft and Y-pipe, wherein, is suction chamber in the middle part of pump housing inner chamber, and both sides are multi-stage impeller room, shaft seal mouth and pump shaft mount inlet successively, and the water intake of rear class blade wheel chamber is communicated with the water outlet of prime blade wheel chamber; On the left side bearing that pump shaft is rotatably installed in pump housing inner chamber two ends and right side bearing, outer end is connected with motor by coupling; Multi-stage impeller by connecting key and pump shaft affixed; Water absorbing section design is in pump housing inner chamber neutral position, and the suction chamber of water absorbing section communicates with left and right two one stage impeller water intakes, and the horizontal water sucking mouth of water absorbing section is arranged on substantially horizontal, connects outward with suction sleeve; Left water exit end, right water exit end are arranged in position, two impeller rooms, and the drain opening position of two water exit ends is all form vertically upward.
Multi-stage impeller symmetry is fixed on the pump shaft of suction chamber arranged on left and right sides, and the impeller intake of arranged on left and right sides all points to suction chamber.
The drain opening of left water exit end is provided with left water-exit vertically mouth, the drain opening of right side water exit end is provided with right water-exit vertically mouth, and two water-exit vertically mouths are by Y-pipe and external connection row cross current.
Namely make a self-balanced multiple-stage centrifugal pump in the manner described above, solve existing side water suction self-balanced multiple-stage centrifugal pump axial thrust balancing and the larger problem of current flow losses in the pump housing; Solve existing both sides water suction self-balanced multiple-stage centrifugal pump suction line resistance large, the problem of the low and easy generation cavitation of suction lift.And thoroughly solve existing self-balanced multiple-stage centrifugal pump low pressure suction chamber press water sealing problem.This pump structure is simple, and efficiency is high, failure rate is low, and manufacture easy maintenance, the life-span is long.
Accompanying drawing explanation
Fig. 1 is self-balanced multiple-stage centrifugal pump structural representation.
Embodiment
Below in conjunction with accompanying drawing, provide embodiment, technological scheme is further illustrated.
With reference to Fig. 1, the method that the pump housing makes according to water pump, makes with cast form, and longitudinal middle point is suction chamber 19, and lateral mid-point is the installation cavity of pump shaft 6, and suction chamber 19 and blade wheel chamber are all positioned at middle inlet segment 1.
Install horizontal water sucking mouth 16 in the ingress of suction chamber, pump shaft 6, through its installation cavity, is rotationally connected this two bearings with the left side bearing 5 on the axle bed of two ports and right side bearing 10 and all adopts tapered roller bearing.
Centered by suction chamber 19, the blade wheel chamber of installing multi-stage impeller is respectively had in both sides, one stage impeller, sencond stage impeller are installed respectively to impeller by multiple connecting key 7, the water intake of blade wheel chamber all points to suction chamber 19, wherein two, left and right one stage impeller water intake 9 is directly communicated with one with suction chamber 19, and the water intake of other impeller at different levels is all communicated with previous stage blade wheel chamber.
Impeller room 8 and the chamber being positioned at two water exit ends in left and right, wherein, the chamber of left water exit end 3 installs left water-exit vertically mouth 2, and the chamber of right water exit end 14 installs right water-exit vertically mouth 15.Two water-exit vertically mouths are communicated with two mouths of pipe of Y-pipe 17 respectively; On another mouth of pipe of Y-pipe 17, attaching has flange plate 18, is convenient to be communicated with externally drained pipe.
Mounting sealing device 4(and shaft seal on the pump shaft 6 at the chamber installing left and right bearing two chamber spaced-apart locations places corresponding with water-exit vertically mouth), to bleed place, two bearings position, left and right chamber to prevent water.
Be positioned at the bearing installation room at pump housing two ends, cast separately, be integrated with the pump main body forming suction chamber and blade wheel chamber is firm by turnbuckle 11.
During work, under the driving of motor, pump shaft 6 rotates, the multi-stage impeller being positioned at blade wheel chamber rotates, at the stator 13 of each impeller, the high pressure water that upper level impeller flows out evenly is imported the water intake (or water sucking mouth) of next stage impeller, namely treat that the water that pump is inhaled enters suction chamber 19 through horizontal water sucking mouth 16, one stage impeller 12 sucks large water gaging from suction chamber 19, through one stage impeller water intake 9, step by step to the rear class blade wheel chamber pumping water yield, left water-exit vertically mouth 2 and right water-exit vertically mouth 15 is pressed into finally by impeller room, both sides 8, send through Y-pipe 17 again, complete the work of pumps water.
This design be arranged symmetrically with impeller water pump, except there is the advantage of existing self-balancing multi-stage pump, also there is following advantages.
(1) flow passage structure is simple, with existing runner complexity be arranged symmetrically with compared with impeller multistage pump, there is flow resistance little, lose little, the feature that efficiency is high.
(2) water absorbing section design is in intermediate portion, and decrease water absorbing section design when one or both sides, the suction chamber packing seal of pump shaft external part and sealing structure for water, completely eliminate the fault of suction chamber sealing.
(3) water exit end design is in pump housing both sides, and left and right two impeller water outlet is all high pressure water, only needs the packing seal in water exit end simplicity of design.
(4) this structural design is simple, to existing distant single-suction multilevel pump technology, only need redesign water absorbing section, water exit end and Y-pipe, and middle section structure need not redesign, and greatly reduces design cost and cost of production.This project organization is also beneficial to existing single-suction multilevel water pump modification as being arranged symmetrically with impeller multistage pump.
(5) this project organization, impeller hub at different levels is identical, at different levelsly reveals different and residual axial force that is that cause, adopts the tapered roller bearing balance being arranged in both sides for a pair, does not need to design additional equilibrium device.
(6) this type water pump, structure is simple, be convenient to safeguard, fault is few, and maintenance cost is low.
Claims (3)
1. self-balanced multiple-stage centrifugal pump, comprise the pump housing, impeller, pump shaft and Y-pipe, it is characterized in that it being suction chamber (19) in the middle part of pump housing inner chamber, both sides are multi-stage impeller room, shaft seal mouth and pump shaft mount inlet successively, and the water intake of rear class blade wheel chamber is communicated with the water outlet of prime blade wheel chamber; On the left side bearing (5) that pump shaft (6) is rotatably installed in pump housing inner chamber two ends and right side bearing (10), outer end is connected with motor by coupling; Multi-stage impeller is affixed by connecting key (7) and pump shaft (6); Water absorbing section design is in pump housing inner chamber neutral position, and the suction chamber (19) of water absorbing section communicates with left and right two one stage impeller water intakes (9), and the horizontal water sucking mouth (16) of water absorbing section is arranged on substantially horizontal, connects outward with suction sleeve; Left water exit end (3), right water exit end (14) are arranged in two impeller room (8) positions, and form is vertically upward made in the drain opening position of two water exit ends.
2. self-balanced multiple-stage centrifugal pump according to claim 1, it is characterized in that multi-stage impeller symmetry is fixed on the pump shaft (6) of suction chamber (19) arranged on left and right sides, the impeller intake of arranged on left and right sides all points to suction chamber (19).
3. self-balanced multiple-stage centrifugal pump according to claim 1, it is characterized in that the drain opening of left water exit end (3) is provided with left water-exit vertically mouth (2), the drain opening of right side water exit end (14) is provided with right water-exit vertically mouth (15), two water-exit vertically mouths are by Y-pipe (17) and flange plate (18) and external connection row cross current.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520000093.8U CN204386893U (en) | 2015-01-01 | 2015-01-01 | Self-balanced multiple-stage centrifugal pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520000093.8U CN204386893U (en) | 2015-01-01 | 2015-01-01 | Self-balanced multiple-stage centrifugal pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204386893U true CN204386893U (en) | 2015-06-10 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520000093.8U Expired - Fee Related CN204386893U (en) | 2015-01-01 | 2015-01-01 | Self-balanced multiple-stage centrifugal pump |
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| Country | Link |
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| CN (1) | CN204386893U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106438480A (en) * | 2016-08-30 | 2017-02-22 | 德清县东旭合金钢铸造有限公司 | Multi-stage water pump body |
| CN106438479A (en) * | 2016-08-30 | 2017-02-22 | 德清县东旭合金钢铸造有限公司 | Multi-stage water pump cover |
| CN106438390A (en) * | 2016-08-30 | 2017-02-22 | 德清县东旭合金钢铸造有限公司 | Multistage sinking pump shell |
-
2015
- 2015-01-01 CN CN201520000093.8U patent/CN204386893U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106438480A (en) * | 2016-08-30 | 2017-02-22 | 德清县东旭合金钢铸造有限公司 | Multi-stage water pump body |
| CN106438479A (en) * | 2016-08-30 | 2017-02-22 | 德清县东旭合金钢铸造有限公司 | Multi-stage water pump cover |
| CN106438390A (en) * | 2016-08-30 | 2017-02-22 | 德清县东旭合金钢铸造有限公司 | Multistage sinking pump shell |
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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: 20150610 Termination date: 20160101 |
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| EXPY | Termination of patent right or utility model |