CN203394769U - Semi-open type impeller self-balancing multistage centrifugal pump - Google Patents
Semi-open type impeller self-balancing multistage centrifugal pump Download PDFInfo
- Publication number
- CN203394769U CN203394769U CN201320485323.5U CN201320485323U CN203394769U CN 203394769 U CN203394769 U CN 203394769U CN 201320485323 U CN201320485323 U CN 201320485323U CN 203394769 U CN203394769 U CN 203394769U
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- Prior art keywords
- impeller
- pump
- positive
- abrasion
- semi
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- 238000004519 manufacturing process Methods 0.000 abstract description 6
- 238000005299 abrasion Methods 0.000 abstract 2
- 230000000903 blocking effect Effects 0.000 abstract 1
- 230000002035 prolonged effect Effects 0.000 abstract 1
- 238000000034 method Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 3
- 238000012856 packing Methods 0.000 description 3
- 238000005266 casting Methods 0.000 description 2
- 238000003825 pressing Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D13/00—Pumping installations or systems
- F04D13/12—Combinations of two or more pumps
- F04D13/14—Combinations of two or more pumps the pumps being all of centrifugal type
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D1/00—Radial-flow pumps, e.g. centrifugal pumps; Helico-centrifugal pumps
- F04D1/06—Multi-stage pumps
- F04D1/063—Multi-stage pumps of the vertically split casing type
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
A semi-open type impeller self-balancing multistage centrifugal pump comprises a shaft, an inner shaft sleeve nut, a suction section, a wear-resistant liner plate, a positive impeller, an intermediate blocking sleeve, a discharge section, a reverse impeller, an outer shaft sleeve nut and a cone-shaped radial sliding bearing component. The suction section, the discharge section, the positive impeller and the reverse impeller are arranged in a working cavity of the pump; and the positive impeller, the discharge section and the reverse impeller are installed in the middle of the shaft. The cone-shaped radial sliding bearing component is installed at the other end of the pump, and the positive impeller and the reverse impeller are of a semi-open type. Partial overquick concentrated abrasion of the pump can be avoided, compensation can be performed within a certain limit range when the abrasion occurs, so that service lives of parts are prolonged, and hydraulic performance of the pump can be kept; production of large-diameter narrow-path impellers is not limited, and the performance range of the pump is expanded.
Description
Technical field
The utility model relates to centrifugal pump, is specially a kind of half-opened impeller self-balanced multiple-stage centrifugal pump.
Background technique
Existing self-balanced multiple-stage centrifugal pump, performance range is wide, and application is extensive, and efficiency and reliability are better than common multistage centrifugal pump, are progressively replacing common multistage centrifugal pump.But have two main problems: 1,, when carrying solids-laden fluid, the gap location between impeller and seal ring is especially easily worn, and seal ring and impeller must be replaced simultaneously when may wear to a certain degree.2, when the ratio of impeller diameter and width of flow path is greatly to a certain extent time, the manufacture of impeller will be very difficult, can not manufacture even.This has just limited the production of small flow or the high pump of single-stage lift.And if the method for employing pressing and jointing is produced such impeller, die cost is very expensive, and the impeller of producing can not adopt the method for turning external diameter to change flow and lift.
Model utility content
The technical problem that the utility model solves is to provide a kind of half-opened impeller self-balanced multiple-stage centrifugal pump, to solve the shortcoming in above-mentioned background technology.
The technical problem that the utility model solves realizes by the following technical solutions:
Half-opened impeller self-balanced multiple-stage centrifugal pump, comprise axle, internal axle sleeve nut, suction casing, abrasion-proof backing block, positive impeller, middle interstage sleeve, Spit Section, anti-impeller, external axle sleeve nut and tapered radial sliding bearing parts, described suction casing, Spit Section, positive impeller, anti-impeller are arranged in the active chamber of pump, described positive impeller, Spit Section and anti-impeller are arranged on the middle part of axle, described taper radial sliding bearing parts are arranged on the other end of pump, and described positive impeller and anti-impeller are semi-open types.
In the utility model, between described positive impeller and abrasion-proof backing block, leave gap, between described anti-impeller and abrasion-proof backing block, leave gap, described gap length regulates by internal axle sleeve nut, middle interstage sleeve and external axle sleeve nut.
In the utility model, described positive impeller and anti-impeller are also replaceable is unshrouded impeller, to tackle the demand that people are different to pump.
In the utility model, by adopting semi-open type or unshrouded impeller, the double shrouded wheel adopting in order to replace common multistage pump, does not exist and causes the seal ring of concentration of local wearing and tearing and the gap between impeller, and the overall wear resistance of pump is improved greatly; When wearing and tearing cause gap between impeller and abrasion-proof backing block to increase to having influence on pump performance, only need between middle interstage sleeve and impeller hub, install the packing ring of suitable thickness additional or change the middle interstage sleeve being of convenient length, it is Zong gap to the suitable numerical value between adjustable impeller and abrasion-proof backing block, and then regulate inside and outside sleeve nut, impeller, anti-impeller are equated with the gap between abrasion-proof backing block.Not only extended impeller and abrasion-proof backing block life-span, but also can make pump keep higher hydraulic performance.
Beneficial effect: the semi-open type that the utility model is related or unshrouded impeller self-balanced multiple-stage centrifugal pump, adopt semi-open type or unshrouded impeller, the double shrouded wheel adopting in order to replace common multistage pump, do not exist and cause the seal ring of concentration of local wearing and tearing and the gap between impeller, the overall wear resistance of pump is improved greatly; When wearing and tearing cause gap between impeller and abrasion-proof backing block to increase to having influence on pump performance, only need between middle interstage sleeve and impeller hub, install the packing ring of suitable thickness additional or change the middle interstage sleeve being of convenient length, it is Zong gap to the suitable numerical value between adjustable impeller and abrasion-proof backing block, and then regulate inside and outside sleeve nut, impeller, anti-impeller are equated with the gap between abrasion-proof backing block.Not only extended impeller and abrasion-proof backing block life-span, but also can make pump keep higher hydraulic performance.Specific as follows:
1. the utility model adopts semi-open type or unshrouded impeller, and the double shrouded wheel adopting in order to replace common multistage pump does not exist and causes the seal ring of concentration of local wearing and tearing and the gap between impeller, and the overall wear resistance of pump is improved greatly; When wearing and tearing cause gap between impeller and abrasion-proof backing block to increase to having influence on pump performance, only need between middle interstage sleeve and impeller hub, install the packing ring of suitable thickness additional or change the middle interstage sleeve being of convenient length, it is Zong gap to the suitable numerical value between adjustable impeller and abrasion-proof backing block, and then regulate inside and outside sleeve nut, impeller, anti-impeller are equated with the gap between abrasion-proof backing block.Not only extended impeller and abrasion-proof backing block life-span, but also can make pump keep higher hydraulic performance.
2. described in, the production of semi-open type or unshrouded impeller is not subject to the restriction of impeller channel width and impeller outer diameter.When the ratio of double shrouded wheel diameter and width of flow path is greatly to a certain extent time, during casting, loam core middle part can sink, and causes impeller cover thick and another side is thin on one side, not only affects the outward appearance of impeller, also have influence on the mechanical property of impeller and the hydraulic performance of pump, this has just limited the raising of pump single-stage lift.Flow hour, double shrouded wheel can not be produced by the mode of casting because runner is narrow, if and the method for employing pressing and jointing is produced such impeller, not only die cost is very expensive, and the impeller of producing can not adopt the method for turning external diameter to change flow and lift.
Accompanying drawing explanation
Fig. 1 is the internal structure schematic diagram of the utility model preferred embodiment.
Fig. 2 is existing double shrouded wheel self-balanced multiple-stage centrifugal pump internal structure schematic diagram.
In figure: gap 13, double shrouded wheel 14 between axle 1, internal axle sleeve nut 2, suction casing 3, abrasion-proof backing block 4, positive impeller 5, middle interstage sleeve 6, Spit Section 7, anti-impeller 8, gap 9, external axle sleeve nut 10, taper radial sliding bearing parts 11, seal ring 12, seal ring and double shrouded wheel.
Embodiment
For technological means, creation characteristic that the utility model is realized, reach object and effect is easy to understand, below in conjunction with concrete diagram, further set forth the utility model.
Referring to Fig. 1 semi-open type or unshrouded impeller self-balanced multiple-stage centrifugal pump, comprise axle 1, internal axle sleeve nut 2, suction casing 3, abrasion-proof backing block 4, positive impeller 5, middle interstage sleeve 6, Spit Section 7, anti-impeller 8, external axle sleeve nut 10 and tapered radial sliding bearing parts 11, described suction casing 3, Spit Section 7, positive impeller 5, anti-impeller 8 is arranged in the active chamber of pump, the middle part of described axle 1 is provided with positive impeller 5, Spit Section 7 and anti-impeller 8, described roller bearing component and sealed member are arranged on the shaft extension end of pump, described taper radial sliding bearing parts 11 are arranged on the other end of pump, described positive impeller 5 and anti-impeller 8 are semi-open types.Between described positive impeller and abrasion-proof backing block, leave gap 13, leave gap 13 between anti-impeller and abrasion-proof backing block, described gap 13 sizes regulate by internal axle sleeve nut 2, middle interstage sleeve 6 and external axle sleeve nut 10.
In the utility model, described positive impeller 5 and anti-impeller 8 are also replaceable is unshrouded impeller, to tackle the demand that people are different to pump.
It in Fig. 2, is double shrouded wheel self-balanced multiple-stage centrifugal pump; with the gap 13 between seal ring 12, seal ring and double shrouded wheel and double shrouded wheel 14, solid particle accumulates in 13 places, gap, causes concentration of local wearing and tearing; make seal ring 12 and impeller 14 occur damaging too early, and can only change after damaging.
With the comparison of double shrouded wheel self-balanced multiple-stage centrifugal pump, the utility model can be avoided the too fast concentrated wearing and tearing in the part of pump, and after wearing and tearing occur, can in certain limit, compensate, thereby the operating life of component is extended, and the hydraulic performance of pump is kept; The production of major diameter and narrow path impeller is unrestricted, has widened pump performance scope.
More than show and described basic principle of the present utility model, major character and advantage of the present utility model.The technician of the industry should understand; the utility model is not restricted to the described embodiments; that in above-described embodiment and specification, describes just illustrates principle of the present utility model; do not departing under the prerequisite of the utility model spirit and scope; the utility model also has various changes and modifications, and these changes and improvements all fall within the scope of claimed the utility model.The claimed scope of the utility model is defined by appending claims and equivalent thereof.
Claims (2)
1. half-opened impeller self-balanced multiple-stage centrifugal pump, comprise axle, internal axle sleeve nut, suction casing, abrasion-proof backing block, positive impeller, middle interstage sleeve, Spit Section, anti-impeller, external axle sleeve nut and taper radial sliding bearing parts, it is characterized in that, described suction casing, Spit Section, positive impeller, anti-impeller are arranged in the active chamber of pump, described positive impeller, Spit Section and anti-impeller are arranged on the middle part of axle, described taper radial sliding bearing parts are arranged on the other end of pump, and described positive impeller and anti-impeller are half-opened impellers.
2. half-opened impeller self-balanced multiple-stage centrifugal pump according to claim 1, is characterized in that, between described positive impeller and abrasion-proof backing block, leaves gap, between described anti-impeller and abrasion-proof backing block, leaves gap.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320485323.5U CN203394769U (en) | 2013-08-09 | 2013-08-09 | Semi-open type impeller self-balancing multistage centrifugal pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320485323.5U CN203394769U (en) | 2013-08-09 | 2013-08-09 | Semi-open type impeller self-balancing multistage centrifugal pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203394769U true CN203394769U (en) | 2014-01-15 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320485323.5U Expired - Fee Related CN203394769U (en) | 2013-08-09 | 2013-08-09 | Semi-open type impeller self-balancing multistage centrifugal pump |
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| CN (1) | CN203394769U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110080989A (en) * | 2019-05-20 | 2019-08-02 | 大连深蓝泵业有限公司 | Coaxial-type is arranged symmetrically multistage hydraulic turbine and directly drives pump and its application method |
| CN111207080A (en) * | 2020-01-22 | 2020-05-29 | 陈科 | Chemical pump with shaft-split middle-opening conveniently-disassembled structure |
-
2013
- 2013-08-09 CN CN201320485323.5U patent/CN203394769U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110080989A (en) * | 2019-05-20 | 2019-08-02 | 大连深蓝泵业有限公司 | Coaxial-type is arranged symmetrically multistage hydraulic turbine and directly drives pump and its application method |
| CN111207080A (en) * | 2020-01-22 | 2020-05-29 | 陈科 | Chemical pump with shaft-split middle-opening conveniently-disassembled structure |
| CN111207080B (en) * | 2020-01-22 | 2020-12-15 | 乐清市芮易经济信息咨询有限公司 | Chemical pump with shaft-split middle-opening conveniently-disassembled structure |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: CHANGSHA ZHONGLIAN PUMP INDUSTRY CO., LTD. Free format text: FORMER OWNER: MA HUAZHI Effective date: 20140701 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 411100 XIANGTAN, HUNAN PROVINCE TO: 410000 CHANGSHA, HUNAN PROVINCE |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20140701 Address after: 410000, No. 1061, East Ring Road, Furong district, Hunan, Changsha Patentee after: Changsha Zhonglian Pump Industry Co., Ltd. Address before: 411100 Hunan city of Xiangtan province Xiangtan County town of Tanjiashan Zizhu neighborhood Patentee before: Ma Huazhi |
|
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140115 Termination date: 20170809 |