CN103352872B - There is the multistage pump suction casing from flushing mechanism - Google Patents
There is the multistage pump suction casing from flushing mechanism Download PDFInfo
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- CN103352872B CN103352872B CN201310262226.4A CN201310262226A CN103352872B CN 103352872 B CN103352872 B CN 103352872B CN 201310262226 A CN201310262226 A CN 201310262226A CN 103352872 B CN103352872 B CN 103352872B
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- suction casing
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Abstract
A kind of multistage pump suction casing having from flushing mechanism, annular water absorbing chamber it is provided with in suction casing, a cut water it is provided with in suction chamber, it is provided with in cut water from flushing hole, suction chamber outer upper is provided with emptying interface, bottom is provided with discharge opeing interface, connects described annular seal space and the first order impeller outlet of multistage pump from flushing hole.The periphery of annular seal space is provided with the connecting screw hole of mechanical sealing gland, and connecting screw hole quantity is four and is uniformly distributed.Suction casing is provided with O groove coordinating with the stage casing of multistage pump on face.Supporting footing and be additionally provided with reinforcement, suction casing is additionally provided with turnbuckle hole and bearing body connecting hole, reinforcement is connected outside hole with described support footing, turnbuckle.Reinforcement is respectively arranged with a fabrication hole near suction chamber outside.The side of suction casing is provided with intake flange, and described flange excircle is provided with instrumentation tap, and flange neck is provided with balance pipe interface.Setting level 180 ° can be exchanged in the position of flange.
Description
Technical field
The present invention relates to a kind of multistage pump suction casing, particularly to a kind of multistage pump suction casing having from flushing mechanism.
Background technology
It is multistage pump suction casing that first of multistage pump crosses stream part, is also inlet segment.From the prior art, domestic traditional multistage pump suction casing annular seal space rinses and all uses external pipeline to be rinsed, and pipeline is by threaded, and it is arranged more to bother and be all and manufactures.In the transport and installation process of pump, pipeline and pipeline connect damage of easily being collided with, and manufacture and very inconvenient if changing into user scene.
It addition, the annular seal space gland connecting hole of the multistage pump of mechanical sealing is generally two, two bolt symmetries are horizontally disposed, and this 2 fixing modes easily occur that the wiping of vertical orientations deviation and the rotary part such as axle sleeve is touched, and occur that pump assembly damages time serious.
Furthermore, the sealing coordinating face between the suction casing of multistage pump and stage casing is to seal by paper washer or fluid sealant etc., inefficacy earial drainage problem easily occurs, and the factor such as the roughness of piece surface is likely to affect sealing effectiveness.
Domestic existing multistage pump suction casing footing reinforcement typically directly connects with outside suction chamber, because both thickness have difference, so rate of cooling is different when casting, the casting flaws such as hot tearing the most easily occurs, causes suction casing to leak.The flange-interface of suction casing arranges only one of which direction.
Summary of the invention
It is an object of the invention to provide a kind of multistage pump suction casing having from flushing mechanism, suction casing has from pre-washing function, decreases workload during pump assembling, reduces labor strength and use cost；And connect reliable with sealingly secure between part, and simple in construction, quick and easy for installation.
For reaching above-mentioned purpose, a kind of multistage pump suction casing having from flushing mechanism of the present invention, it is located on multistage pump, its one end connects the cavity other end that seals of multistage pump and connects the first order impeller outlet of multistage pump, is provided with annular water absorbing chamber, is provided with a cut water in described suction chamber in suction casing, it is provided with in described cut water from flushing hole, described suction chamber outer upper is provided with emptying interface, and bottom is provided with discharge opeing interface, described from the flushing hole described annular seal space of connection and the first order impeller outlet of multistage pump.
Further, the periphery of described annular seal space is provided with the connecting screw hole of mechanical sealing gland, and connecting screw hole quantity is four and is uniformly distributed.
Further, described suction casing is provided with O groove coordinating with the stage casing of multistage pump on face, channel bottom fillet R0.2～0.8, incline fillet R0.1～0.3 in groove.
Further, described suction casing is provided with two symmetrical support footing.
Further, described support footing lower surface is respectively arranged with a bar-shaped trough, and described support footing is respectively arranged with a footing hole.
Further, described support footing is additionally provided with reinforcement, and described suction casing is additionally provided with turnbuckle hole and bearing body connecting hole, and described reinforcement is connected outside hole with described support footing, turnbuckle.
Further, described reinforcement is respectively arranged with a fabrication hole near suction chamber outside.
Further, the side of described suction casing is provided with intake flange, and described flange excircle is provided with instrumentation tap, and flange neck is provided with balance pipe interface.
Further, setting level 180 ° can be exchanged in the position of described flange.
Further, described cut water is arranged on inside described suction chamber away from level orientation at intake flange.
Using above-mentioned structure, suction casing has from pre-washing function, decreases workload during pump assembling, reduces labor strength and use cost；Mechanical type envelope gland uses 4 uniform connecting screw hole attachment security reliable with suction casing；Suction casing coordinates face to use seal with O ring safe and reliable with stage casing；The support footing of suction casing has a reinforcement, and be provided with fabrication hole in reinforcement and suction chamber junction, it is to avoid casting flaw, improves foundry goods survival rate；The bar-shaped trough supporting footing lower surface can reduce footing bottom surface processing capacity, and the position of flange can be exchanged by desired level 180 ° and arrange, and simple in construction, and complete function is quick and easy for installation.
Accompanying drawing explanation
Fig. 1 is the schematic diagram that the present invention has the multistage pump suction casing from flushing mechanism；
Fig. 2 is the staggered section view along M direction of Fig. 1.
Label declaration
Support footing 1 footing hole 2
Reinforcement 3 turnbuckle hole 4
Bearing body connecting hole 5 cut water 6
From flushing hole 7 connecting screw hole 8
Emptying interface 9 balance pipe interface 11
Instrumentation tap 12 flange 13
Suction chamber 14 discharge opeing interface 15.
Detailed description of the invention
Below in conjunction with the accompanying drawings the present invention is described in further detail:
Refer to Fig. 1 and Fig. 2, a kind of multistage pump suction casing having from flushing mechanism, it is located on multistage pump, its one end connects the cavity other end that seals of multistage pump and connects the first order impeller outlet of multistage pump, annular water absorbing chamber 14 it is provided with in described suction casing, it is provided with a cut water 6 away from level orientation at intake flange inside suction chamber 14, is provided with from flushing hole 7 in cut water 6.Suction chamber 14 outer upper is provided with emptying interface 9, and bottom is provided with discharge opeing interface 15.From flushing hole 7 communication seals chamber and first order impeller outlet, sealing member can be played the effects such as lubrication, cooling along entering annular seal space from flushing hole 7 by the high-pressure medium of first order impeller outlet when the pump is operated, extends the life-span of sealing member.
Described suction casing, the periphery of its annular seal space is provided with the connecting screw hole 8 of mechanical sealing gland, and connecting screw hole quantity is 4, and four connecting screw holes are uniformly distributed, and secure mechanical sealing gland from 4, solves 2 fixing produced problem.
The suction casing of described multistage pump coordinates face to be provided with O groove, channel bottom fillet R0.2～0.8, incline fillet R0.1～0.3 in groove with stage casing.Employing seal with O ring is safe and reliable, and channel bottom and edges and corners fillet can be prevented effectively from damage O.
Described suction casing has two symmetrical support footing 1, supports footing lower surface and is respectively arranged with a bar-shaped trough, and this bar-shaped trough can reduce footing bottom surface processing capacity, supports and is respectively arranged with a footing hole 2 on footing, and described support footing is provided with reinforcement 3.Suction casing is provided with turnbuckle hole 4 and bearing body connecting hole 5.Reinforcement 3 is connected outside footing 1, turnbuckle hole 4 with supporting, reinforcement 3 is respectively arranged with a fabrication hole near suction chamber 14 outside, this fabrication hole solves reinforcement and suction chamber thickness difference, and during caused casting, rate of cooling is different, the casting flaws such as hot tearing occurs.
The side of described suction casing is provided with intake flange 13, flange 13 cylindrical has instrumentation tap 12, flange 13 cervical region have balance pipe interface 11.Setting level 180 ° can be exchanged in the position of flange, facilitates user's pipeline to arrange.
The invention have the advantage that suction casing has from pre-washing function, decrease workload during pump assembling, reduce labor strength and use cost；Mechanical sealing gland and suction casing use 4 uniform connecting screw hole attachment security reliable；Suction casing coordinates face to use seal with O ring safe and reliable with stage casing；The support footing of suction casing has a reinforcement, and be provided with fabrication hole in reinforcement and suction chamber junction, it is to avoid casting flaw, improves foundry goods survival rate；The bar-shaped trough supporting footing lower surface can reduce footing bottom surface processing capacity；The position of flange can be exchanged by user's request level 180 ° and arrange, and simple in construction, multiple functional, quick and easy for installation.
Although highly preferred embodiment of the present invention has been described that purposes, but those skilled in the art can not depart from the scope of its description and the spirit of invention to carry out different amendments, supplementary and replacement.And embodiments of the invention are simply to illustrate that the technological thought scope of the present invention rather than be only limited to embodiments of the invention.
Claims (7)
1. the multistage pump suction casing having from flushing mechanism, being located on multistage pump, its one end connects the annular seal space of multistage pump, and its other end connects the first order impeller outlet of multistage pump, it is characterized in that: be provided with annular water absorbing chamber in suction casing, in described suction chamber, be provided with a cut water；The side of described suction casing is provided with intake flange, and described flange excircle is provided with instrumentation tap, and flange neck is provided with balance pipe interface；Described cut water is arranged on inside described suction chamber away from level orientation at intake flange；Being provided with in described cut water from flushing hole, described suction chamber outer upper is provided with emptying interface, and bottom is provided with discharge opeing interface, described from the flushing hole described annular seal space of connection and the first order impeller outlet of multistage pump.
There is multistage pump suction casing from flushing mechanism the most as claimed in claim 1, it is characterised in that: the periphery of annular seal space is provided with the connecting screw hole of mechanical sealing gland, and connecting screw hole quantity is four and is uniformly distributed.
There is multistage pump suction casing from flushing mechanism the most as claimed in claim 1, it is characterised in that: described suction casing is provided with two symmetrical support footing.
There is multistage pump suction casing from flushing mechanism the most as claimed in claim 3, it is characterised in that: described support footing lower surface is respectively arranged with a bar-shaped trough, and described support footing is respectively arranged with a footing hole.
There is multistage pump suction casing from flushing mechanism the most as claimed in claim 3, it is characterized in that: described support footing is additionally provided with reinforcement, being additionally provided with turnbuckle hole and bearing body connecting hole on described suction casing, described reinforcement is connected outside hole with described support footing, turnbuckle.
There is multistage pump suction casing from flushing mechanism the most as claimed in claim 5, it is characterised in that: described reinforcement is respectively arranged with a fabrication hole near suction chamber outside.
There is multistage pump suction casing from flushing mechanism the most as claimed in claim 1, it is characterised in that: setting level 180 ° can be exchanged in the position of described flange.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310262226.4A CN103352872B (en) | 2013-06-27 | 2013-06-27 | There is the multistage pump suction casing from flushing mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310262226.4A CN103352872B (en) | 2013-06-27 | 2013-06-27 | There is the multistage pump suction casing from flushing mechanism |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103352872A CN103352872A (en) | 2013-10-16 |
| CN103352872B true CN103352872B (en) | 2016-08-10 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310262226.4A Active CN103352872B (en) | 2013-06-27 | 2013-06-27 | There is the multistage pump suction casing from flushing mechanism |
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| Country | Link |
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| CN (1) | CN103352872B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104613015A (en) * | 2015-01-24 | 2015-05-13 | 湖州南丰机械制造有限公司 | Water pump head with water outlet body |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05321889A (en) * | 1992-05-15 | 1993-12-07 | Honda Motor Co Ltd | Bearing cooling device for water pump |
| CN201874835U (en) * | 2010-10-29 | 2011-06-22 | 山东长志泵业有限公司 | Multistage centrifugal pump with balance disc structure |
| CN201944013U (en) * | 2010-12-30 | 2011-08-24 | 上海阿波罗机械股份有限公司 | Spent fuel water pool cooling pump for nuclear power station |
| CN102606507A (en) * | 2012-03-27 | 2012-07-25 | 上海阿波罗机械股份有限公司 | Bearing body mounting structure for PCS (Passive Containment Cooling System) recirculation pump |
| CN202597114U (en) * | 2012-03-27 | 2012-12-12 | 上海阿波罗机械股份有限公司 | Startup water feed pump for nuclear power station |
| CN103161760A (en) * | 2011-12-12 | 2013-06-19 | 株式会社山田制作所 | Water pump |
| CN203348161U (en) * | 2013-06-27 | 2013-12-18 | 上海第一水泵厂有限公司 | Multistage pump suction section with self-washing structure |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2845138B1 (en) * | 2002-10-01 | 2004-12-17 | Snecma Moteurs | BEARING BEARING AMORTIZED WITH OIL |
| CN102220984B (en) * | 2011-07-22 | 2013-01-02 | 李冬庆 | Single stage pump with forced circulation rotation-preventing structure |
-
2013
- 2013-06-27 CN CN201310262226.4A patent/CN103352872B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05321889A (en) * | 1992-05-15 | 1993-12-07 | Honda Motor Co Ltd | Bearing cooling device for water pump |
| CN201874835U (en) * | 2010-10-29 | 2011-06-22 | 山东长志泵业有限公司 | Multistage centrifugal pump with balance disc structure |
| CN201944013U (en) * | 2010-12-30 | 2011-08-24 | 上海阿波罗机械股份有限公司 | Spent fuel water pool cooling pump for nuclear power station |
| CN103161760A (en) * | 2011-12-12 | 2013-06-19 | 株式会社山田制作所 | Water pump |
| CN102606507A (en) * | 2012-03-27 | 2012-07-25 | 上海阿波罗机械股份有限公司 | Bearing body mounting structure for PCS (Passive Containment Cooling System) recirculation pump |
| CN202597114U (en) * | 2012-03-27 | 2012-12-12 | 上海阿波罗机械股份有限公司 | Startup water feed pump for nuclear power station |
| CN203348161U (en) * | 2013-06-27 | 2013-12-18 | 上海第一水泵厂有限公司 | Multistage pump suction section with self-washing structure |
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| Publication number | Publication date |
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| CN103352872A (en) | 2013-10-16 |
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