CN104358716A - Water lubricating sliding bearing device of horizontal axial suction type centrifugal pump - Google Patents
Water lubricating sliding bearing device of horizontal axial suction type centrifugal pump Download PDFInfo
- Publication number
- CN104358716A CN104358716A CN201410592086.1A CN201410592086A CN104358716A CN 104358716 A CN104358716 A CN 104358716A CN 201410592086 A CN201410592086 A CN 201410592086A CN 104358716 A CN104358716 A CN 104358716A
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- CN
- China
- Prior art keywords
- water lubricating
- water
- rotating shaft
- lubricating bearing
- bearing
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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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
- F04D29/00—Details, component parts, or accessories
- F04D29/60—Mounting; Assembling; Disassembling
- F04D29/62—Mounting; Assembling; Disassembling of radial or helico-centrifugal pumps
- F04D29/628—Mounting; Assembling; Disassembling of radial or helico-centrifugal pumps especially adapted for liquid pumps
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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
- F04D29/00—Details, component parts, or accessories
- F04D29/04—Shafts or bearings, or assemblies thereof
- F04D29/043—Shafts
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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
- F04D29/00—Details, component parts, or accessories
- F04D29/04—Shafts or bearings, or assemblies thereof
- F04D29/046—Bearings
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The invention discloses a water lubricating sliding bearing device of a horizontal axial suction type centrifugal pump. The water lubricating sliding bearing device comprises an axial suction section (4), a primary guide intermediate section (7), a primary vane (5), a water lubricating bearing (6) and a rotating shaft (9), wherein the water lubricating bearing is arranged between the rotating shaft and the guide side edge (8) of the primary guide intermediate section, and a rotating shaft step (10) is arranged on the rotating shaft at a clearance part corresponding to the water lubricating bearing. As the water lubricating bearing is arranged on the rear side of the primary vane, load impact which is directly brought to the water lubricating bearing due to the work condition sudden change of a suction opening is reduced, various loads affecting the running stability of the water lubricating bearing are reduced, and the pump running stability is great. The water lubricating bearing is arranged in the primary guide intermediate section, and original assembly accumulative errors are reduced. Meanwhile, the rotating shaft sprayed with a hard alloy is adopted instead of original water lubricating bearing bushing, the assembly precision of the water lubricating bearing is improved, and the clearance centering property of running seal is effectively ensured.
Description
Technical field
The present invention relates to a kind of centrifugal pump, specifically relate to a kind of water-lubricated slide bearing means of horizontal axis inhalation type centrifugal pump.
Background technique
Because water-lubricated slide bearing means cost is low, environment friendly and pollution-free, anti-attrition is energy-conservation, good flame resistance.In recent years, in many pump series products, adopt using the liquid of self conveying as the water-lubricated slide bearing means of Lubricants, become a kind of developing direction of product specification.Especially for a kind of horizontal axis inhalation type multistage centrifugal pump, because the import and export of this centrifugal pump are for holding into upper outlet type structure (i.e. end feed liquor top fluid mode), support one end of the bearing assembly of this centrifugal pump is single armed roller bearings, its other end is that water-lubricated slide bearing means supports, the centralized positioning that this structure is assembled its rotating shaft when pump assembles is very strict, especially for the Spielpassung between water lubrication shaft bearing sleeve and rotating shaft.
This structure centrifugal pump start, shut down and rotation speed change time, its horizontal axis suction port can bear different flashy loads, because its water lubriucated bearing is sleeved on the suction choma of first stage impeller by water lubriucated bearing, when load action is at water lubriucated bearing and rotating shaft, its shaft core position also may be undergone mutation, make water lubriucated bearing running clearance eccentric, the equilibrium of the pressure membrane in destructible water lubriucated bearing gap; Secondly, as being corrosive and existing containing granule foreign in medium, also can destroy the pressure membrane in water lubriucated bearing gap, shorten the working life of water lubriucated bearing.
Summary of the invention
The object of the invention is to overcome above-mentioned deficiency, and the water-lubricated slide bearing means of a kind of anti-various instantaneous load, stable horizontal axis inhalation type centrifugal pump is provided.
Objects of the present invention are achieved through the following technical solutions: the water lubrication shaft bearing apparatus of horizontal axis inhalation type centrifugal pump, comprise axial suction casing, chopped-off head guide middle section, first stage impeller, water lubriucated bearing, rotating shaft, described water lubrication shaft is housed between the water conservancy diversion side of described rotating shaft and chopped-off head guide middle section, in described rotating shaft and gap location corresponding with water lubriucated bearing has rotating shaft step.
After adopting the present invention, because water lubriucated bearing is located at the rear side place of first stage impeller, reduce the load impact that the sudden change of suction port operating mode brings directly to water lubriucated bearing, decrease the stability that various load affects water lubriucated bearing operation, make pump operation steadily good, water lubriucated bearing is placed in chopped-off head guide middle section, reduce original-pack accumulated error of joining, cancel former water lubrication shaft bearing sleeve simultaneously and take the rotating shaft step of coated with hard alloy, improve the assembly precision of water lubriucated bearing, effectively ensure that the gap centering of its running sealing.
Accompanying drawing explanation
Below in conjunction with accompanying drawing and mode of execution, the present invention is described in further detail.
Fig. 1 is structural representation of the present invention.
Embodiment
As shown in Figure 1, the water lubrication shaft bearing apparatus of horizontal axis inhalation type centrifugal pump of the present invention, comprise axial suction casing 4, chopped-off head guide middle section 7, first stage impeller 5 (and secondary impeller 12), water lubriucated bearing 6, rotating shaft 9, described water lubriucated bearing 6 (by major part screw 3) is contained between described rotating shaft 9 and the water conservancy diversion side 8 of chopped-off head guide middle section 7 and (is namely in the rear side of first stage impeller 5), in described rotating shaft 9 and gap location corresponding with water lubriucated bearing 6 (touching position) has rotating shaft step 10.
On the inwall of described axial suction casing 4, and with first stage impeller 5 contacting point, impeller ring 2 (being namely contained in the front part sides of first stage impeller 5) is housed, the back side edge of described first stage impeller 5 is provided with relief hole 11, this relief hole 11 is communicated with the suction port side (low pressure area) of first stage impeller 5, make the high pressure water of the suction port side (zone of high pressure) of secondary impeller 12 by water lubriucated bearing gap, form pressure reduction return flow line, its role is to: produce Differential pressure flow liquid stream, play and support water lubriucated bearing effect, and the heat produced when water lubriucated bearing runs can be taken away rapidly, play cooling action.
Wherein: put together on the spindle nose of rotating shaft 9 with bolt 1 in the middle of the water conservancy diversion side 8 that described first stage impeller 5 is placed in chopped-off head guide middle section 7, described water lubriucated bearing 6 and to be sprayed with hardness be that the rotating shaft step 10 (instead of original water lubrication shaft bearing sleeve) of the cemented carbide of corrosion-resistant, the resistance to erosion of HRc55 ~ 60 forms one group of lubrication gap.The lubrication material of this water lubriucated bearing adopts the imperial material of match to make, and this material has obvious low friction performance, good elasticity and high impact resistance and stronger bearing capacity.This water lubriucated bearing need calculate through shaft strength, draw support force needed for it and calculate water lubriucated bearing length between than (i.e. water lubriucated bearing length and water lubriucated bearing lubrication gap diameter than), the bearing throw of eccentric of required support force and the pressure distribution of water lubriucated bearing, these have all been come by computer by design programming program.
Claims (3)
1. the water-lubricated slide bearing means of horizontal axis inhalation type centrifugal pump, comprise axial suction casing (4), chopped-off head guide middle section (7), first stage impeller (5), water lubriucated bearing (6), rotating shaft (9), it is characterized in that: described water lubriucated bearing (6) is contained between the water conservancy diversion side (8) of described rotating shaft (9) and chopped-off head guide middle section (7), described rotating shaft (9) is gone up and is had rotating shaft step (10) with water lubriucated bearing (6) corresponding gap location.
2. the water-lubricated slide bearing means of horizontal axis inhalation type centrifugal pump according to claim 1, is characterized in that: described rotating shaft step (10) is for being sprayed with the cemented carbide that hardness is corrosion-resistant, the resistance to erosion of HRc55 ~ 60.
3. the water-lubricated slide bearing means of horizontal axis inhalation type centrifugal pump according to claim 1 and 2, it is characterized in that: with first stage impeller (5) contacting point, impeller ring (2) is housed on the inwall of described axial suction casing (4), the back side edge of described first stage impeller (5) is provided with relief hole (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410592086.1A CN104358716A (en) | 2014-10-28 | 2014-10-28 | Water lubricating sliding bearing device of horizontal axial suction type centrifugal pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410592086.1A CN104358716A (en) | 2014-10-28 | 2014-10-28 | Water lubricating sliding bearing device of horizontal axial suction type centrifugal pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104358716A true CN104358716A (en) | 2015-02-18 |
Family
ID=52526012
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410592086.1A Pending CN104358716A (en) | 2014-10-28 | 2014-10-28 | Water lubricating sliding bearing device of horizontal axial suction type centrifugal pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104358716A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112524051A (en) * | 2020-11-12 | 2021-03-19 | 浙江东航消防泵业有限公司 | Water lubricating centrifugal pump |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07217593A (en) * | 1994-01-28 | 1995-08-15 | Hitachi Ltd | Submerged bearing for self-contained water lubrication |
| US5690471A (en) * | 1995-09-29 | 1997-11-25 | Aisin Seiki K.K. | Water pump |
| CN2313097Y (en) * | 1997-11-14 | 1999-04-07 | 何绍宗 | Water-lubricating axle sleeve |
| CN1609455A (en) * | 2003-10-24 | 2005-04-27 | 日立产业有限公司 | Water discharge pump and underwater bearing apparatus |
| CN101975168A (en) * | 2010-11-05 | 2011-02-16 | 浙江科尔泵业股份有限公司 | Horizontal axial-suction sectional multistage high-pressure centrifugal pump |
| CN202108767U (en) * | 2011-07-01 | 2012-01-11 | 沈阳鼓风机集团股份有限公司 | Water-lubricated guide bearing |
| CN204200698U (en) * | 2014-10-28 | 2015-03-11 | 浙江科尔泵业股份有限公司 | The water-lubricated slide bearing means of horizontal axis inhalation type centrifugal pump |
-
2014
- 2014-10-28 CN CN201410592086.1A patent/CN104358716A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07217593A (en) * | 1994-01-28 | 1995-08-15 | Hitachi Ltd | Submerged bearing for self-contained water lubrication |
| US5690471A (en) * | 1995-09-29 | 1997-11-25 | Aisin Seiki K.K. | Water pump |
| CN2313097Y (en) * | 1997-11-14 | 1999-04-07 | 何绍宗 | Water-lubricating axle sleeve |
| CN1609455A (en) * | 2003-10-24 | 2005-04-27 | 日立产业有限公司 | Water discharge pump and underwater bearing apparatus |
| CN101975168A (en) * | 2010-11-05 | 2011-02-16 | 浙江科尔泵业股份有限公司 | Horizontal axial-suction sectional multistage high-pressure centrifugal pump |
| CN202108767U (en) * | 2011-07-01 | 2012-01-11 | 沈阳鼓风机集团股份有限公司 | Water-lubricated guide bearing |
| CN204200698U (en) * | 2014-10-28 | 2015-03-11 | 浙江科尔泵业股份有限公司 | The water-lubricated slide bearing means of horizontal axis inhalation type centrifugal pump |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112524051A (en) * | 2020-11-12 | 2021-03-19 | 浙江东航消防泵业有限公司 | Water lubricating centrifugal pump |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20150218 |