CN109595173A - A kind of cantilever pump suitable for inlet high pressure - Google Patents
A kind of cantilever pump suitable for inlet high pressure Download PDFInfo
- Publication number
- CN109595173A CN109595173A CN201811500385.2A CN201811500385A CN109595173A CN 109595173 A CN109595173 A CN 109595173A CN 201811500385 A CN201811500385 A CN 201811500385A CN 109595173 A CN109595173 A CN 109595173A
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- China
- Prior art keywords
- pump
- high pressure
- cantilever
- bearing
- cavity
- Prior art date
- 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
-
- 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
-
- 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
- F04D29/041—Axial thrust balancing
-
- 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
-
- 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
- F04D29/08—Sealings
- F04D29/10—Shaft sealings
- F04D29/106—Shaft sealings especially adapted for liquid pumps
-
- 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
- F04D29/40—Casings; Connections of working fluid
- F04D29/42—Casings; Connections of working fluid for radial or helico-centrifugal pumps
- F04D29/426—Casings; Connections of working fluid for radial or helico-centrifugal pumps especially adapted for liquid pumps
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
本发明涉及机械工程泵技术领域，提供了一种适用于入口高压的悬臂式泵，包括相互固接的泵体和泵盖，泵盖固接轴承悬架；还包括穿接三者的泵轴；泵体内设有叶轮；叶轮背离泵入口端的一侧设有平衡鼓构件；平衡鼓构件与叶轮之间形成第二空腔，平衡鼓构件与泵盖之间形成第一空腔；第一空腔通过第一平衡管和泵出口端连通；第二空腔通过第二平衡管和与泵入口端连通。借此，本发明运行时，通过两个空腔内的压力差平衡轴向力。由于用作平衡的压力差与泵的输入、输出压力相关，当输入、输出压力变化时，该压力差也随之而变化，因此可以很好的平衡在较大压力工况下运行时的轴向压力，避免了各零部件因“串轴”所造成的磨损，延长了装置的适用寿命。
The invention relates to the technical field of mechanical engineering pumps, and provides a cantilever pump suitable for high inlet pressure, comprising a pump body and a pump cover that are fixed to each other, and the pump cover is fixed to a bearing suspension; it also includes a pump shaft connecting the three The pump body is provided with an impeller; the side of the impeller away from the inlet end of the pump is provided with a balance drum member; a second cavity is formed between the balance drum member and the impeller, and a first cavity is formed between the balance drum member and the pump cover; The cavity communicates with the pump outlet through the first balance pipe; the second cavity communicates with the pump inlet through the second balance pipe. Thereby, the axial force is balanced by the pressure difference in the two cavities during operation of the present invention. Since the pressure difference used for balance is related to the input and output pressures of the pump, when the input and output pressures change, the pressure difference also changes, so the shaft can be well balanced when operating under larger pressure conditions. To avoid the wear and tear of each component caused by the "series shaft", and prolong the service life of the device.
Description
Technical field
The invention belongs to mechanical engineering pump technical field more particularly to a kind of cantilever pumps suitable for inlet high pressure.
Background technique
Inlet high pressure single-stage cantilever formula is centrifuged pump inlet pressure height, and impeller and pump bearing are by very big axial force, pump shaft
Tail end cannot offset very big backward thrust using single rack bearing.Currently, the single-stage cantilever formula that China is suitable for inlet high pressure is centrifuged
Pump is typically employed on impeller and arranges the methods of balance hole.Such traditional arrangement method is unfavorable for balancing what inlet high pressure generated
Axial force and due at back choma gap by medium washed away, corroded and denude and cause the service life of back choma very short, once by
To damage, will make a big impact to the performance of pump.
Chinese Patent Application No.: 201520788135.9 patent document describes a kind of single-stage cantilever of resistance to inlet high pressure formula
Although centrifugal pump enhances restriction effect by using regular water channel inner hole structure, reduce the pressure of seal chamber, and after the impeller
Cover board setting increases the thickening boss of impeller intensity, has the function that balance portion axial force.But such structure is for entrance
The very high operating condition of pressure can not be applicable in, and can equally be made chemical industry pump installation that " string axis " phenomenon (i.e. axial displacement) occur, be caused zero
Part loss, reduces the shelf life of device.
In summary, the existing technology has inconveniences and defects in actual use, so it is necessary to be improved.
Summary of the invention
For above-mentioned defect, the purpose of the present invention is to provide a kind of cantilever pumps suitable for inlet high pressure, pass through
Balancing drum component is set away from the side at pump intake end in impeller；The second cavity is formed between balancing drum component and impeller, is balanced
The first cavity is formed between drum component and pump cover；First cavity is connected to by the first balance pipe with pump discharge end；Second cavity is logical
It crosses the second balance pipe and is connected to pump intake end.When pump operation, pass through the pressure difference balancing axial thrust in two cavitys.Due to
It is related to the input of pump, output pressure to make the pressure difference that balances, when input, output pressure change, the pressure difference is also therewith
Variation, therefore can be very good to balance axial compressive force when running under larger pressure working condition, it is ensured that pump is under high pressure operating condition
Do not occur axial displacement when operation, avoids each components because of the abrasion caused by " string axis ", extend the shelf life of device.
To achieve the goals above, the present invention provides a kind of cantilever pump suitable for inlet high pressure, including is fixedly connected with each other
The pump housing and pump cover, the affixed bearing suspension of pump cover；It further include wearing the pump shaft for meeting three；
The pump housing includes pump intake end and pump discharge end；
The impeller being socketed with the pump shaft is equipped in the pump housing；The impeller is equipped with balance away from the side at pump intake end
Drum component；The second cavity is formed between the balancing drum component and impeller, forms first between the balancing drum component and pump cover
Cavity；
First cavity is connected to by the first balance pipe with pump discharge end；Second cavity by the second balance pipe and
It is connected to pump intake end；
Seal assembly and bearing assembly are equipped in the bearing suspension.
Cantilever pump according to the present invention suitable for inlet high pressure, the weighing apparatus drum component are fixed on pump using snap ring and key
On axis.
Cantilever pump according to the present invention suitable for inlet high pressure, the seal assembly are mechanical seal.
Cantilever pump according to the present invention suitable for inlet high pressure, the bearing assembly are sliding bearing.
Cantilever pump according to the present invention suitable for inlet high pressure, the seal assembly are labyrinth sealing.
Cantilever pump according to the present invention suitable for inlet high pressure, the bearing assembly are angular contact ball bearing.
Cantilever pump according to the present invention suitable for inlet high pressure, the bearing suspension of the tail end of the pump shaft is interior to be equipped with tail
End bearing.
Cantilever pump according to the present invention suitable for inlet high pressure, the tail end bearing are angular contact ball bearing.
Cantilever pump according to the present invention suitable for inlet high pressure, the pump housing is bolted with pump cover, described
Pump cover and bearing suspension are also by being bolted.
What the present invention passed through is designed to provide a kind of cantilever pump suitable for inlet high pressure, by deviating from pump in impeller
Balancing drum component is arranged in the side of arrival end；The second cavity, balancing drum component and pump cover are formed between balancing drum component and impeller
Between form the first cavity；First cavity is connected to by the first balance pipe with pump discharge end；Second cavity passes through the second balance pipe
It is connected to with pump intake end.When pump operation, pass through the pressure difference balancing axial thrust in two cavitys.Due to being used as the pressure of balance
Difference and the input of pump, output pressure are related, when input, output pressure change, the pressure difference also variation therewith, therefore can be with
Axial compressive force when balance is run under larger pressure working condition well, it is ensured that pump axis does not occur when running under high pressure operating condition
To displacement, each components are avoided because of the abrasion caused by " string axis ", extend the shelf life of device.
Detailed description of the invention
Fig. 1 is structural schematic diagram of the invention；
Fig. 2 is the structural schematic diagram of a-quadrant in Fig. 1；
In figure: the 1- pump housing, 2- impeller, 3- pump shaft, 4- pump cover, 5- seal assembly, 6- bearing assembly, 7- bearing suspension, 8-
Balancing drum component, the first balance pipe of 9-, the second balance pipe of 10-, 11- pump intake end, 12- pump discharge end, the first cavity of 13-, 14-
Second cavity, 15- tail end bearing.
Specific embodiment
In order to make the objectives, technical solutions, and advantages of the present invention clearer, with reference to the accompanying drawings and embodiments, right
The present invention is further elaborated.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, and
It is not used in the restriction present invention.
Referring to Fig. 1, the present invention provides a kind of cantilever pumps suitable for inlet high pressure, including the pump housing 1 being fixedly connected with each other
With pump cover 4, the affixed bearing suspension 7 of pump cover 4；It further include wearing the pump shaft 3 for meeting three.
The pump housing 1 includes pump intake end 11 and pump discharge end 12.
In conjunction with Fig. 2, the impeller 2 being socketed with pump shaft 3 is equipped in the pump housing 1；Impeller 2 is equipped with flat away from the side at pump intake end 11
Weigh drum component 8；The second cavity 14 is formed between balancing drum component 8 and impeller 2, forms first between balancing drum component 8 and pump cover 4
Cavity 13.
Preferably, balancing drum component 8 is fixed on pump shaft 3 using snap ring and key.
First cavity 13 is connected to by the first balance pipe 9 with pump discharge end 12；Second cavity 14 passes through the second balance pipe 10
It is connected to with pump intake end 11.
Seal assembly 5 and bearing assembly 6 are equipped in bearing suspension 7；Preferably, seal assembly 5 is mechanical seal or labyrinth
Formula sealing.Bearing assembly 6 can be sliding bearing, and the present invention is preferably angular contact ball bearing, can be with balance portion axial compressive force.
Preferably, it is equipped with tail end bearing 15 in the bearing suspension 7 of the tail end of pump shaft 3, being used to support pump shaft 3 makes its operation more
Add steady.Preferably, tail end bearing 15 is angular contact ball bearing, can axially be pressed with balance portion while playing a supportive role
Power.
The pump housing 1 of the invention is bolted with pump cover 4；Pump cover 4 and bearing suspension 7 are also by being bolted.Protect
Whole stable connection, and maintenance easy to disassemble are demonstrate,proved.
In conjunction with Fig. 2, the working principle of the invention is further illustrated: being P by the pressure at pump intake end 11 when pump operatingEnter,
Pressure is P at pump housing mouth end 12Out.Pressure is set to P in second cavity 141, the pressure in the first cavity 13 is P2。
Since the second balance pipe 10 is connected to pump intake end 11, the first balance pipe 9 and 12 connection of pump discharge end, therefore P1=
PEnter, P2=POut.Generating pressure difference in the rear and front end face of balancing drum component 8 at this time is P2-P1.Axial direction in this pressure and pump shaft 3
Power balances each other.
It, should when input, output pressure variation since the pressure difference for being used as balance is related to the input of pump, output pressure
Pressure difference also changes therewith, therefore can be very good to balance axial compressive force when running under larger pressure working condition, it is ensured that pump
There is not axial displacement when running under high pressure operating condition, avoids each components because of the abrasion caused by " string axis ", extend
The shelf life of device.
In conclusion being pumped into the present invention provides a kind of cantilever pump suitable for inlet high pressure by deviating from impeller
Balancing drum component is arranged in the side at mouth end；Form the second cavity between balancing drum component and impeller, balancing drum component and pump cover it
Between form the first cavity；First cavity is connected to by the first balance pipe with pump discharge end；Second cavity by the second balance pipe and
It is connected to pump intake end.When pump operation, pass through the pressure difference balancing axial thrust in two cavitys.Due to being used as the pressure difference of balance
Related to the input of pump, output pressure, when input, output pressure variation, which also changes therewith, therefore can be very
Axial compressive force when good balance is run under larger pressure working condition, it is ensured that pump axial direction does not occur when running under high pressure operating condition
Displacement avoids each components because of the abrasion caused by " string axis ", extends the shelf life of device.
Certainly, the present invention can also have other various embodiments, without deviating from the spirit and substance of the present invention, ripe
It knows those skilled in the art and makes various corresponding changes and modifications, but these corresponding changes and change in accordance with the present invention
Shape all should fall within the scope of protection of the appended claims of the present invention.
Claims (9)
1. a kind of cantilever pump suitable for inlet high pressure, which is characterized in that including the pump housing and pump cover being fixedly connected with each other, the pump
Cover affixed bearing suspension；It further include wearing the pump shaft for meeting three；
The pump housing includes pump intake end and pump discharge end；
The impeller being socketed with the pump shaft is equipped in the pump housing；The impeller is equipped with balancing drum structure away from the side at pump intake end
Part；The second cavity is formed between the balancing drum component and impeller, forms the first cavity between the balancing drum component and pump cover；
First cavity is connected to by the first balance pipe with pump discharge end；Second cavity by the second balance pipe and with pump
Arrival end connection；
Seal assembly and bearing assembly are equipped in the bearing suspension.
2. the cantilever pump according to claim 1 suitable for inlet high pressure, which is characterized in that the weighing apparatus drum component uses
Snap ring and key are fixed on pump shaft.
3. the cantilever pump according to claim 1 suitable for inlet high pressure, which is characterized in that the seal assembly is machine
Tool sealing.
4. the cantilever pump according to claim 1 suitable for inlet high pressure, which is characterized in that the bearing assembly is to slide
Dynamic bearing.
5. the cantilever pump according to claim 1 suitable for inlet high pressure, which is characterized in that the seal assembly is fan
The sealing of palace formula.
6. the cantilever pump according to claim 5 suitable for inlet high pressure, which is characterized in that the bearing assembly is angle
Contact ball bearing.
7. the cantilever pump according to claim 6 suitable for inlet high pressure, which is characterized in that the tail end of the pump shaft
Tail end bearing is equipped in bearing suspension.
8. the cantilever pump according to claim 7 suitable for inlet high pressure, which is characterized in that the tail end bearing is angle
Contact ball bearing.
9. being suitable for the cantilever pump of inlet high pressure described in any one according to claim 1~8, which is characterized in that described
The pump housing is bolted with pump cover, and the pump cover and bearing suspension are also by being bolted.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811500385.2A CN109595173A (en) | 2018-12-08 | 2018-12-08 | A kind of cantilever pump suitable for inlet high pressure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811500385.2A CN109595173A (en) | 2018-12-08 | 2018-12-08 | A kind of cantilever pump suitable for inlet high pressure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109595173A true CN109595173A (en) | 2019-04-09 |
Family
ID=65961607
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811500385.2A Pending CN109595173A (en) | 2018-12-08 | 2018-12-08 | A kind of cantilever pump suitable for inlet high pressure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109595173A (en) |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH1182364A (en) * | 1997-09-02 | 1999-03-26 | Mitsubishi Heavy Ind Ltd | Multistage centrifugal pump |
| JP2000154795A (en) * | 1998-11-19 | 2000-06-06 | Mitsubishi Heavy Ind Ltd | Balance disc device of centrifugal pump |
| JP2006077694A (en) * | 2004-09-10 | 2006-03-23 | Mitsubishi Heavy Ind Ltd | Centrifugal pump |
| CN1844678A (en) * | 2006-04-05 | 2006-10-11 | 丛铭 | Single-stage horizontal automatic-balancing centrifugal seal pump device |
| CN2844531Y (en) * | 2005-11-07 | 2006-12-06 | 上海东方泵业(集团)有限公司 | Axial-forced balancing disk unit for balanced sectional multi-stage pump |
| CN2881167Y (en) * | 2006-02-10 | 2007-03-21 | 洪常文 | Water film lubricating vertical centrifugal pump |
| CN203348147U (en) * | 2013-06-28 | 2013-12-18 | 浙江科尔泵业股份有限公司 | High-pressure resistant sealing centrifugal pump applied to sea water desalination |
| CN205064284U (en) * | 2015-09-29 | 2016-03-02 | 辽宁长志泵业有限公司 | High -pressure single -stage cantilever type centrifugal pump of resistant entry |
| CN206175234U (en) * | 2016-11-15 | 2017-05-17 | 江苏芬奇工业设备制造有限公司 | Balanced high inlet pressure chemical centrifugal pump of axial force |
| CN209483612U (en) * | 2018-12-08 | 2019-10-11 | 烟台龙港泵业股份有限公司 | A kind of cantilever pump suitable for inlet high pressure |
-
2018
- 2018-12-08 CN CN201811500385.2A patent/CN109595173A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH1182364A (en) * | 1997-09-02 | 1999-03-26 | Mitsubishi Heavy Ind Ltd | Multistage centrifugal pump |
| JP2000154795A (en) * | 1998-11-19 | 2000-06-06 | Mitsubishi Heavy Ind Ltd | Balance disc device of centrifugal pump |
| JP2006077694A (en) * | 2004-09-10 | 2006-03-23 | Mitsubishi Heavy Ind Ltd | Centrifugal pump |
| CN2844531Y (en) * | 2005-11-07 | 2006-12-06 | 上海东方泵业(集团)有限公司 | Axial-forced balancing disk unit for balanced sectional multi-stage pump |
| CN2881167Y (en) * | 2006-02-10 | 2007-03-21 | 洪常文 | Water film lubricating vertical centrifugal pump |
| CN1844678A (en) * | 2006-04-05 | 2006-10-11 | 丛铭 | Single-stage horizontal automatic-balancing centrifugal seal pump device |
| CN203348147U (en) * | 2013-06-28 | 2013-12-18 | 浙江科尔泵业股份有限公司 | High-pressure resistant sealing centrifugal pump applied to sea water desalination |
| CN205064284U (en) * | 2015-09-29 | 2016-03-02 | 辽宁长志泵业有限公司 | High -pressure single -stage cantilever type centrifugal pump of resistant entry |
| CN206175234U (en) * | 2016-11-15 | 2017-05-17 | 江苏芬奇工业设备制造有限公司 | Balanced high inlet pressure chemical centrifugal pump of axial force |
| CN209483612U (en) * | 2018-12-08 | 2019-10-11 | 烟台龙港泵业股份有限公司 | A kind of cantilever pump suitable for inlet high pressure |
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Legal Events
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|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| CB03 | Change of inventor or designer information |
Inventor after: Zheng Xin Inventor after: Liu Xiansheng Inventor after: Wang Hanbing Inventor after: Chen Peilun Inventor after: Zhang Chengxia Inventor before: Zheng Xin Inventor before: Liu Xiansheng Inventor before: Wang Hanbing |
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| CB03 | Change of inventor or designer information | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20190409 |
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| RJ01 | Rejection of invention patent application after publication |