CN104989673A - Horizontal multi-stage centrifugal pump - Google Patents
Horizontal multi-stage centrifugal pump Download PDFInfo
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- CN104989673A CN104989673A CN201510408359.7A CN201510408359A CN104989673A CN 104989673 A CN104989673 A CN 104989673A CN 201510408359 A CN201510408359 A CN 201510408359A CN 104989673 A CN104989673 A CN 104989673A
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Abstract
The invention discloses a horizontal multi-stage centrifugal pump. The horizontal multi-stage centrifugal pump comprises a pump body, a water inlet section, a water outlet section, a multi-stage middle section, a pump shaft, a cooling balance device, bearing devices and corresponding sealing devices, wherein the water inlet section, the water outlet section and the multi-stage middle section are arranged on the pump body, and the bearing devices are connected to the two ends of the pump shaft respectively. The water inlet section is arranged in the axial direction. The water outlet section is arranged in the radial direction. The bearing device arranged at one end of the water inlet section is arranged in a water inlet cavity of the water inlet section through a corresponding bearing support. The horizontal multi-stage centrifugal pump is simple and reasonable in structure, balanced, stable and reliable in running, long in service life and high in running efficiency.
Description
Technical field
The present invention relates to a kind of water pump, particularly relate to a kind of horizontal multi-stage centrifugal pump.
Background technique
Existing horizontal multi-stage centrifugal pump complex structure, operation troubles rate is high, and in axial thrust balancing devices, balance disk wear is fast, and maintenance is inconvenient.Packing seal is adopted in axial inlet segment and water exit end two ends Seal cage, the leakage rate of water is large, cause the waste of water, user uses water pump to increase drainage means, filler and axle sleeve quick abrasion, change frequent, especially use packing seal at pump water inlet end, owing to there is gap between filler and axle sleeve, easily cause air to enter in pump, cause and affect pump sump amount, time serious, cause water pump not inhale water.Moreover water pump rotor supporting two ends adopt roller bearing, the temperature rise of long-term running bearing, easily damages bearing, reduces water pump working life.
Summary of the invention
Object of the present invention is exactly the deficiency existed for prior art, provides a kind of horizontal multi-stage centrifugal pump.This horizontal multi-stage centrifugal pump is simple and reasonable for structure, runs, balances, stable, reliably, long service life, operational efficiency is high.
The technological scheme of horizontal multi-stage centrifugal pump of the present invention comprises the pump housing, be located at the inlet segment of the pump housing, water exit end and multistage stage casing, pump shaft, cooling Equilibrator, be connected to the bearing means at the two ends of described pump shaft, and corresponding seal arrangement, described inlet segment and water exit end arrange in axial and radial respectively, and the described bearing means of inlet segment one end is located in the water-inlet cavity of this inlet segment by corresponding bearing bracket.
Described seal arrangement comprises the Seal cage between the corresponding site of the mechanical seal sleeve being located at the pump housing and pump shaft or the pump housing and pump shaft, and to be located between described Seal cage and pump shaft, also or be located at described Seal cage and the mechanical seal device between pump shaft and the pump housing.
Described cooling Equilibrator also comprises and one is opened on the pump housing, is connected to water passage hole between the respective cavities in multistage stage casing and the Seal cage of the corresponding of the pump housing.
Described cooling Equilibrator comprises the water port be connected with the Seal cage of seal arrangement, and is connected to the balance cooling tube of bearing means of water exit end one end of this water port and pump shaft.
Described balance cooling tube is provided with reduction valve.
Its back shroud of impeller of the described pump housing is provided with some equalizing orifices.
The described bearing means of the pump shaft of water exit end one end is connected with described inlet segment through a return pipe.
Horizontal multi-stage centrifugal pump of the present invention is due to the rationality of its structure, and its axial water sucting mode is realized by special structure, installs and uses convenient, and under equal conditions, its inflow is large, and entry resistance is little, has increased substantially the operational efficiency of water pump; The improvement of its sealing configuration and axial thrust balancing devices structure then improves sealing effect, extends the working life of associated sealing components, solves the flimsy problem of Balance disc in existing water pump; And the improvement of cooling structure, make cooling effectiveness high, effective, structure is simple, is easy to realize, temperature when both having reduced bearing working, makes again pump axial force obtain balance.
Accompanying drawing explanation
Fig. 1 is horizontal multi-stage centrifugal pump one example structure schematic diagram of the present invention.
Embodiment
In order to understand technological scheme of the present invention further, the present invention will be further described by reference to the accompanying drawings by following examples for nationality:
As shown in Figure 1, the horizontal multi-stage centrifugal pump of the present embodiment comprises the pump housing, is located at the inlet segment 1 on the pump housing, water exit end 4 and multistage stage casing 2 respectively, pump shaft 8, is connected to the bearing means at the two ends of pump shaft 8, cooling Equilibrator, back shroud of impeller 5, and corresponding seal arrangement etc.The drive motor connected with pump shaft 8 is the horizontal drive motor of 1450 ~ 3000r/minr, and the axle sleeve coordinated with pump shaft 8 is stainless steel material.
The axis of inlet segment 1 and the coaxial one end being located at pump shaft of pump shaft, the Way out of water exit end 4 and the corresponding side being axially located at the pump housing mutually in 90 degree of inlet segment 1.
The bearing means being positioned at the pump shaft 8 of the water-inlet cavity 1a of inlet segment 1 comprises the abrasion-resistant slide bearing 7 be connected to by bearing bracket 6 on the pump housing, is located at the stainless steel axle sleeve 23 between abrasion-resistant slide bearing 7 and pump shaft 8.Abrasion-resistant slide bearing 7 can be abrasive rubber submerged bearing, utilizes lubrication with clean water in pump.Bearing means by the pump shaft of drive motor one end comprises the bearing support being provided with cooling water chamber 14, is located at the rolling bearing 15 on this bearing support.
Its cooling Equilibrator comprise the corresponding site by water exit end being opened in the pump housing water port 22, be opened in by water passage hole (or crossing water space) 21a between the impeller ring set 21 of water exit end and the pump housing and balance cooling tube 13 etc., water port 22 is connected with the Seal cage 25 by water exit end being located at the pump housing, balance cooling tube 13 is connected between the cooling water chamber 14 of the bearing means of drive motor one end of water port 22 and pump shaft, and balance cooling tube 13 is provided with reduction valve 13a.Water passage hole 21a is located at by between water exit end impeller ring set 21 and impeller 5 wheel hub.
Seal arrangement comprises the Seal cage 25 leaned between water exit end position and pump shaft being located at the pump housing, and is located at the mechanical seal device between Seal cage 25 and pump shaft 8; Its mechanical seal device comprises the mechanical seal sleeve 11 be located between pump shaft 8 and Seal cage 25, and is located at the seal ring in this mechanical seal sleeve 11, and its seal ring comprises rotary packing ring 12 and corresponding stationary seal ring.The mechanical seal sleeve 11 coordinated with pump shaft 8 is formed for stainless steel material.
Mechanical seal device also comprises stationary seat 26, one end of the bearing means of the drive motor of stationary seat 26 and Seal cage 25." O " shape seal ring 27 is connected with between mechanical seal sleeve 11 and pump shaft 8.
3 ~ 6 equalizing orifices 10 are offered in the position near water inlet of the back shroud of impeller 5 of the pump housing; It can make the high pressure water formed between cover plate and stator after the impeller be expelled back into water intake by equalizing orifice 10, balances part axial force.
The cooling water chamber 14 of the bearing means of the pump shaft 8 of drive motor one end is connected with the water-inlet cavity of inlet segment 1 through a return pipe 24.
The mechanical seal chamber mesohigh water of water exit end has flowed in the cooling water chamber of corresponding bearing means through water port and balance cooling tube and reduction valve, cooling is carried out to this bearing means and reduces temperature, get back in inlet segment water-inlet cavity by return pipe again, to reach balance portion responsive to axial force.
In another embodiment of the present invention, its rolling bearing by the bearing means of the pump shaft of drive motor one end is stainless steel rolling bearing.All the other structures of this example can with above-described embodiment roughly the same.
Horizontal multi-stage centrifugal pump of the present invention has the axial thrust balancing devices of special structure, and change stuffing box body part and be sealed into mechanical seal, good sealing effect, No leakage water, working life extends at double.Reduction valve is installed to reduce the pressure of high pressure water to bearing cooling chamber in balance water-cooling tube.
Claims (7)
1. a horizontal multi-stage centrifugal pump, comprise the pump housing, be located at the inlet segment of the pump housing, water exit end and multistage stage casing, pump shaft, cooling Equilibrator, is connected to the bearing means at the two ends of described pump shaft, and corresponding seal arrangement, it is characterized in that described inlet segment and water exit end arrange in axial and radial respectively, the described bearing means of inlet segment one end is located in the water-inlet cavity of this inlet segment by corresponding bearing bracket.
2. horizontal multi-stage centrifugal pump according to claim 1, it is characterized in that described seal arrangement comprises the Seal cage between the corresponding site of the mechanical seal sleeve being located at the pump housing and pump shaft or the pump housing and pump shaft, and to be located between described Seal cage and pump shaft, also or be located at described Seal cage and the mechanical seal device between pump shaft and the pump housing.
3. horizontal multi-stage centrifugal pump according to claim 1, is characterized in that described cooling Equilibrator also comprises and one is opened on the pump housing, is connected to water passage hole between the respective cavities in multistage stage casing and the Seal cage of the corresponding of the pump housing.
4. horizontal multi-stage centrifugal pump according to claim 1, is characterized in that described cooling Equilibrator comprises the water port be connected with the Seal cage of seal arrangement, and is connected to the balance cooling tube of bearing means of water exit end one end of this water port and pump shaft.
5. horizontal multi-stage centrifugal pump according to claim 4, is characterized in that described balance cooling tube is provided with reduction valve.
6. horizontal multi-stage centrifugal pump according to claim 1, is characterized in that its back shroud of impeller of the described pump housing is provided with some equalizing orifices.
7. horizontal multi-stage centrifugal pump according to claim 1, is characterized in that the described bearing means of the pump shaft of water exit end one end is connected with described inlet segment through a return pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510408359.7A CN104989673B (en) | 2015-07-13 | 2015-07-13 | horizontal multi-stage centrifugal pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510408359.7A CN104989673B (en) | 2015-07-13 | 2015-07-13 | horizontal multi-stage centrifugal pump |
Publications (2)
| Publication Number | Publication Date |
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| CN104989673A true CN104989673A (en) | 2015-10-21 |
| CN104989673B CN104989673B (en) | 2018-03-13 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201510408359.7A Active CN104989673B (en) | 2015-07-13 | 2015-07-13 | horizontal multi-stage centrifugal pump |
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| Country | Link |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108757477A (en) * | 2018-07-19 | 2018-11-06 | 重庆水泵厂有限责任公司 | One kind simplifying structure centrifugal pump |
| CN109826801A (en) * | 2019-03-21 | 2019-05-31 | 上海上涵自动化科技有限公司 | A kind of water cooling pump |
| WO2023070766A1 (en) * | 2021-10-31 | 2023-05-04 | 浙江水泵总厂有限公司 | Axial liquid intake structure and multi-stage centrifugal pump having same |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3732029A (en) * | 1971-12-14 | 1973-05-08 | Westinghouse Electric Corp | Compact heat exchanger |
| CN201858161U (en) * | 2010-11-05 | 2011-06-08 | 浙江科尔泵业股份有限公司 | Horizontal axial suction sectional multistage high-pressure centrifugal pump |
| CN203146430U (en) * | 2013-02-22 | 2013-08-21 | 江苏大学 | High-temperature self-cooling hot water circulation pump |
| CN203488386U (en) * | 2013-07-26 | 2014-03-19 | 广东永力泵业有限公司 | Sectional type horizontal multistage centrifugal pump |
| CN203926033U (en) * | 2014-05-29 | 2014-11-05 | 长沙佳能通用泵业有限公司 | The horizontal multi-stage centrifugal pump of a kind of end water sucting belt inducer |
| CN204783844U (en) * | 2015-07-13 | 2015-11-18 | 江西省万载水泵有限责任公司 | Horizontal multistage centrifugal pump |
-
2015
- 2015-07-13 CN CN201510408359.7A patent/CN104989673B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3732029A (en) * | 1971-12-14 | 1973-05-08 | Westinghouse Electric Corp | Compact heat exchanger |
| CN201858161U (en) * | 2010-11-05 | 2011-06-08 | 浙江科尔泵业股份有限公司 | Horizontal axial suction sectional multistage high-pressure centrifugal pump |
| CN203146430U (en) * | 2013-02-22 | 2013-08-21 | 江苏大学 | High-temperature self-cooling hot water circulation pump |
| CN203488386U (en) * | 2013-07-26 | 2014-03-19 | 广东永力泵业有限公司 | Sectional type horizontal multistage centrifugal pump |
| CN203926033U (en) * | 2014-05-29 | 2014-11-05 | 长沙佳能通用泵业有限公司 | The horizontal multi-stage centrifugal pump of a kind of end water sucting belt inducer |
| CN204783844U (en) * | 2015-07-13 | 2015-11-18 | 江西省万载水泵有限责任公司 | Horizontal multistage centrifugal pump |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108757477A (en) * | 2018-07-19 | 2018-11-06 | 重庆水泵厂有限责任公司 | One kind simplifying structure centrifugal pump |
| CN108757477B (en) * | 2018-07-19 | 2023-07-21 | 重庆水泵厂有限责任公司 | Centrifugal pump with simplified structure |
| CN109826801A (en) * | 2019-03-21 | 2019-05-31 | 上海上涵自动化科技有限公司 | A kind of water cooling pump |
| WO2023070766A1 (en) * | 2021-10-31 | 2023-05-04 | 浙江水泵总厂有限公司 | Axial liquid intake structure and multi-stage centrifugal pump having same |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104989673B (en) | 2018-03-13 |
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