CN110230600A - Multi-stage shield pump - Google Patents
Multi-stage shield pump Download PDFInfo
- Publication number
- CN110230600A CN110230600A CN201910646565.XA CN201910646565A CN110230600A CN 110230600 A CN110230600 A CN 110230600A CN 201910646565 A CN201910646565 A CN 201910646565A CN 110230600 A CN110230600 A CN 110230600A
- Authority
- CN
- China
- Prior art keywords
- suction inlet
- stage
- shield
- choma
- stage impeller
- 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.)
- Pending
Links
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 claims abstract description 17
- 238000007789 sealing Methods 0.000 claims description 22
- 230000003014 reinforcing effect Effects 0.000 claims description 10
- 239000000463 material Substances 0.000 claims description 4
- 238000000034 method Methods 0.000 claims description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 19
- 239000007788 liquid Substances 0.000 description 6
- 238000010586 diagram Methods 0.000 description 5
- 230000008676 import Effects 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 230000001050 lubricating effect Effects 0.000 description 2
- 238000005086 pumping Methods 0.000 description 2
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 description 2
- 229910010271 silicon carbide Inorganic materials 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 241000233855 Orchidaceae Species 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000003763 carbonization Methods 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- JEGUKCSWCFPDGT-UHFFFAOYSA-N h2o hydrate Chemical compound O.O JEGUKCSWCFPDGT-UHFFFAOYSA-N 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000000116 mitigating effect Effects 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 239000002210 silicon-based material Substances 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
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
- F04D1/06—Multi-stage pumps
- F04D1/08—Multi-stage pumps the stages being situated concentrically
-
- 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
- F04D13/02—Units comprising pumps and their driving means
- F04D13/06—Units comprising pumps and their driving means the pump being electrically driven
- F04D13/0606—Canned motor 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
- F04D13/00—Pumping installations or systems
- F04D13/02—Units comprising pumps and their driving means
- F04D13/06—Units comprising pumps and their driving means the pump being electrically driven
- F04D13/0606—Canned motor pumps
- F04D13/0633—Details of the 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
- F04D29/007—Details, component parts, or accessories 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
- F04D29/02—Selection of particular materials
- F04D29/026—Selection of particular materials 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
- F04D29/04—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
- F04D29/06—Lubrication
- F04D29/061—Lubrication 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
- F04D29/08—Sealings
- F04D29/086—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
- F04D29/18—Rotors
- F04D29/22—Rotors specially for centrifugal pumps
- F04D29/2205—Conventional flow pattern
- F04D29/2222—Construction and assembly
-
- 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
The present invention provides a kind of multi-stage shield pumps, comprising: pedestal (100), multi-stage impeller portion (200) and shield electric machine portion (300)；The pedestal (100), multi-stage impeller portion (200) and shield electric machine portion (300) are sequentially connected；The multi-stage impeller portion (200) includes: suction inlet (4) on suction inlet under first stage impeller (3) and first stage impeller；Lower suction inlet outlet choma (3a) is provided under the first stage impeller on suction inlet (3)；Suction inlet entrance choma (4a) is provided on the first stage impeller on suction inlet (4)；Lower suction inlet outlet choma (3a) and upper suction inlet entrance choma (4a) are tightly connected.Structure of the invention is reasonable, easy to operate, good airproof performance, greatly improves the unfailing performance of canned motor pump.
Description
Technical field
The present invention relates to canned motor pump fields, and in particular, to a kind of multi-stage shield pump, especially a kind of efficient multistage
Canned motor pump.
Background technique
Traditional multi-stage shield pump, a kind of multistage with suction inlet pedestal as disclosed in patent document CN208763908U
Canned motor pump, including first stage impeller, first stage impeller import, chopped-off head water outlet, secondary structure unit, secondary suction inlet, secondary impeller
Import and subsequent structural unit at different levels, the structural units at different levels of subsequent setting are identical as the structure of secondary structure unit,
The outside of stator housing be equipped with the first outer cylinder, between the first outer cylinder and stator housing formed shield water band, shield water band successively with
Chopped-off head water outlet, secondary suction inlet, secondary impeller import, secondary impeller, secondary pumping chamber, secondary water outlet and subsequent each
Grade suction inlet, impeller inlet, impeller, pumping chamber is connected with water outlet, further includes pedestal, pedestal is provided with cavity, pump inlet
It is set on pedestal；The secondary impeller (18) and subsequent stages impeller inlet are according to the action direction of shafting static(al), with chopped-off head
Impeller inlet (3) is arranged in opposite directions；There are gaps between the rotor shielding sleeve (32) and stator can (33)；The electricity
Machine rotor (10) by upper end bearing (12) and bottom end bearing (6) support, the rotor (10), upper end bearing (12) and
Bottom end bearing is respectively positioned between first stage impeller (2) and secondary impeller (18)；By the rotor (10), motor stator (8)
It is assemblied in the first outer cylinder (9) with first stage impeller (2), by the secondary structure unit and the structural units at different levels of subsequent setting
It is assemblied in the second outer cylinder (31), is bolted between them.
But there are the following problems for traditional multi-stage shield pump:
1, there are still can optimize place in structure.
2, cumbersome, poor sealing is assembled.
Summary of the invention
For the defects in the prior art, the object of the present invention is to provide a kind of multi-stage shield pumps.
A kind of multi-stage shield pump provided according to the present invention, comprising: pedestal 100, multi-stage impeller portion 200 and shield electric machine
Portion 300；
The pedestal 100, multi-stage impeller portion 200 and shield electric machine portion 300 are sequentially connected；
The multi-stage impeller portion 200 includes: suction inlet 3 and suction inlet 4 on first stage impeller under first stage impeller；
Lower suction inlet outlet choma 3a is provided under the first stage impeller on suction inlet 3；
Suction inlet entrance choma 4a is provided on the first stage impeller on suction inlet 4；
The lower suction inlet outlet choma 3a and upper suction inlet entrance choma 4a is tightly connected.
Preferably, upper end bearing block 20 and electric machine stand 13 are provided in the shield electric machine portion 300；
The upper end bearing block 20 is fastenedly connected with electric machine stand 13；
Reinforcing rib 20c is provided on the upper end bearing block 20.
Preferably, the reinforcing rib 20c is more.
Preferably, pump delivery port flanges 39 and connection flange 37 are provided on the pedestal 100；The pump delivery port flanges
39 match connection with connection flange 37；The connection flange 37 can rotate.
Preferably, sealing ring 38 is provided between the pump delivery port flanges 39 and connection flange 37.
Preferably, the sealing ring 38 includes: the first sealing 38a and the second sealing 38d, first sealing
38a is detachably connected with the second sealing 38d.
Preferably, the lower suction inlet outlet choma 3a and upper suction inlet entrance choma 4a welds together.
Preferably, upper end bearing 22 is installed in the shield electric machine portion 300；The upper end bearing 22 uses silicon carbide material
Material is made；Upper end bearing self-lubricating runner 22a is provided on the upper end bearing 22.
Preferably, intermediate bearing 28 is installed in the shield electric machine portion 300；Centre is provided on the intermediate bearing 28
Bearing runner 28a.
Preferably, the internal diameter of the intermediate bearing runner 28a is smaller than the internal diameter of upper end bearing self-lubricating runner 22a.
Compared with prior art, the present invention have it is following the utility model has the advantages that
1, structurally reasonable, it is easy to operate.
2, assembly is simple, good airproof performance.
3, the reliability and durability of canned motor pump are greatly improved.
Detailed description of the invention
Upon reading the detailed description of non-limiting embodiments with reference to the following drawings, other feature of the invention,
Objects and advantages will become more apparent upon:
Fig. 1 is a kind of overall structure diagram of multi-stage shield pump provided by the invention.
Fig. 2 is a kind of structural schematic diagram of multi-stage shield pump upper end bearing block provided by the invention.
Fig. 3 is that suction inlet entrance choma and lower suction inlet export choma assembly on a kind of multi-stage shield pump provided by the invention
Structural schematic diagram.
Fig. 4 is a kind of multi-stage shield pump upper end bearing provided by the invention and intermediate bearing combining structure schematic diagram.
Fig. 5 is a kind of ring structure schematic diagram of multi-stage shield pump provided by the invention.
It is shown in figure:
Specific embodiment
The present invention is described in detail combined with specific embodiments below.Following embodiment will be helpful to the technology of this field
Personnel further understand the present invention, but the invention is not limited in any way.It should be pointed out that the ordinary skill of this field
For personnel, without departing from the inventive concept of the premise, several changes and improvements can also be made.These belong to the present invention
Protection scope.
As shown in Figures 1 to 5, a kind of multi-stage shield pump provided according to the present invention, comprising: pedestal 100, multi-stage impeller portion
200 and shield electric machine portion 300；The pedestal 100, multi-stage impeller portion 200 and shield electric machine portion 300 are sequentially connected；It is described
Multi-stage impeller portion 200 includes: suction inlet 3 and suction inlet 4 on first stage impeller under first stage impeller；Suction inlet 3 under the first stage impeller
On be provided with lower suction inlet outlet choma 3a；Suction inlet entrance choma 4a is provided on the first stage impeller on suction inlet 4；Institute
Lower suction inlet outlet choma 3a and upper suction inlet entrance choma 4a is stated to be tightly connected；The lower suction inlet outlet choma 3a and upper suction
Inlet choma 4a welds together.In preference, under first stage impeller on suction inlet 3 and first stage impeller between suction inlet 4
Matching connection；It is provided on suction inlet 3 under first stage impeller and exports choma 3a with the lower suction inlet shared, sucked on first stage impeller
It is also equipped on mouth 4 with the upper suction inlet entrance choma 4a shared.The outer diameter of lower suction inlet outlet choma 3a is equal to upper suction inlet
The internal diameter of entrance choma 4a, tight fit between the two, junction is welded using full welding or part therebetween, and welding trace is
3b.The purpose designed in this way is the No leakage in order to ensure lower suction inlet and the cooperation of upper suction inlet are close, guarantee electric pump efficiency and
Durability.Traditional product is stained with to connect using glue for suction inlet 3 under first stage impeller on suction inlet 4, to be set in this way on first stage impeller
Meter is easy leakage or cracking, influences electric pump efficiency and service life.
Further, upper end bearing block 20 and electric machine stand 13 are provided in the shield electric machine portion 300；The upper shaft
Seat 20 is held to be fastenedly connected with electric machine stand 13；Reinforcing rib 20c is provided on the upper end bearing block 20；The reinforcing rib 20c is
More.In preference, screw connection is used between upper end bearing block 20 and electric machine stand 13, is provided on upper end bearing block 20
Electric pump hanging ring screw hole 20a, fixing threaded hole 20b, reinforcing rib 20c, exhaust valve mounting hole 20d, the fixing threaded hole 20b are 4；Institute
It states reinforcing rib 20c to arrange at 90 degrees to each other, and symmetrical centered on electric pump hanging ring screw hole 20a, and electric pump hanging ring screw hole 20a
On be also equipped with reinforcing rib 20c, arrangement reinforcing rib 20c the purpose is to reduce the screw holes connecting with electric machine stand, can mention in this way
High processing efficiency reduces assembly time, process simplification.In preference, the design aperture ratio rotor of exhaust valve mounting hole 20d
The screw of the fixed lid 21 in axis upper end is 1 grade big, when assembling electric pump, can by exhaust valve mounting hole 20d rotary electric machine rotor and impeller,
The smoothness of rotor, impeller can be effectively checked, so that the assembly of electric pump is more convenient.
Further, pump delivery port flanges 39 and connection flange 37 are provided on the pedestal 100；It is described to pump out mouth of a river method
Orchid 39 matches connection with connection flange 37；The connection flange 37 can rotate.The pump delivery port flanges 39 and connection flange
Sealing ring 38 is provided between 37；The sealing ring 38 includes: the first sealing 38a and the second sealing 38d, and described first is close
Envelope portion 38a is detachably connected with the second sealing 38d.In preference, the first sealing 38a passes through with the second sealing 38d
Positive tapered end 38b and yin tapered end 38c is interlocked, and forms sealing cooperation.It is simple and fast when installation, while connection flange 37 passes through sealing ring
38, it is freely rotatable, greatly improves the convenience of flange hole adjustment.
Further, upper end bearing 22 is installed in the shield electric machine portion 300；The upper end bearing 22 is using carbonization
Silicon materials are made；Upper end bearing self-lubricating runner 22a is provided on the upper end bearing 22；Peace in the shield electric machine portion 300
Equipped with intermediate bearing 28；Intermediate bearing runner 28a is provided on the intermediate bearing 28；The intermediate bearing runner 28a's is interior
Diameter is smaller than the internal diameter of upper end bearing self-lubricating runner 22a.In preference, upper end bearing self-lubricating runner 22a is set using circular arc
Meter, shares 4 runners, parallel with bearing, is evenly arranged on the inside of bearing；Intermediate bearing runner 28a also uses designed arc-shaped appearance.It is intermediate
The internal diameter of bearing runner 28a is smaller than upper end bearing self-lubricating runner 22a's, and its purpose is to ensure electric pump circulating cooling hydraulic pressure
Power minimizes.The service life that can be improved shielding electronics, shielding rotor, increases its reliability.
Further, in preference, pump water inlet mouth 2 is arranged on Inlet and outlet water pedestal 1, the liquid from pump water inlet mouth 2
Body enters first stage impeller 6 through suction inlet 4 on suction inlet 3 under first stage impeller, first stage impeller, flows into chopped-off head after liquid is pressurized and lead
Leaf 5；Then secondary intermediate impeller 8 and intermediate guide blade 9 are flowed into, pressurizes layer by layer, finally flows through impeller 10 and final stage guide vane
11, reach high pressure water chamber 29；In addition to a small amount of liquid at intermediate bearing 28 by entering inside motor, most part liquid will
The mouth of a river 40 is pumped out through the flow direction of exhalant canal 36.There is very least a portion of liquid to pass through the water of intermediate bearing 28 from high pressure water chamber 29
Circulation road enters in the room high-pressure water chamber B 27 inside motor after lubricating bearing, and then some liquid passes through rotor shielding sleeve
Seal clearance between 16 and stator can 15, heat exchange enter in the room sub-high pressure water cavity B 23 after taking away motor heat, then
The room sub-high pressure water cavity A 18 is flowed into after lubricating bearing by the water stream channel of upper end bearing block drainage hole 19, passes through armature spindle later
The circulating water passage 17 at 26 centers is downward；Finally, from the sub-high pressure current stabilization formed between guide vane partition 32 and intermediate impeller 8
The recirculated water water outlet 34 in area 33 flows out.Since the upper and lower end face of rotor 25 is respectively the room sub-high pressure water cavity B 23 and high pressure
The room water cavity B 27, result in formation of the pressure differences of rotor upper and lower ends, and when pump operation, the differential pressure action is on rotor
On axial force direction, the power axially downwards of the self weight of significant portion rotor and multi-stage impeller generation can be offset, mitigation thrust can be reached
Bearing load and the effect for reducing bearing wear, to extend the service life of bearing.Rotor portion by upper end bearing 22, in
Between bearing 28 and the auxiliary bearing of lower end 7 support, the bearing friction pair of upper end bearing 22 and intermediate bearing 28 is high using high rigidity
Wear-resisting silicon carbide, ceramics or cemented carbide material is made.In preference, lid 21 and armature spindle 26 are fixed in armature spindle upper end
With connection；Tie-plate 30, holddown spring 31, resistance to pressure cylinder 35 are arranged in multi-stage impeller portion 200；The setting of seal clearance 24 is shielding
In motor section 300；Motor stator 14 is mounted on electric machine stand 13；Pump cover 12 is mounted in multi-stage impeller portion 200.
In the description of the present application, it is to be understood that term " on ", "front", "rear", "left", "right", " is erected at "lower"
Directly ", the orientation or positional relationship of the instructions such as "horizontal", "top", "bottom", "inner", "outside" is orientation based on the figure or position
Relationship is set, description the application is merely for convenience of and simplifies description, rather than the device or element of indication or suggestion meaning are necessary
It with specific orientation, is constructed and operated in a specific orientation, therefore should not be understood as the limitation to the application.
Specific embodiments of the present invention are described above.It is to be appreciated that the invention is not limited to above-mentioned
Particular implementation, those skilled in the art can make a variety of changes or modify within the scope of the claims, this not shadow
Ring substantive content of the invention.In the absence of conflict, the feature in embodiments herein and embodiment can any phase
Mutually combination.
Claims (10)
1. a kind of multi-stage shield pump characterized by comprising pedestal (100), multi-stage impeller portion (200) and shield electric machine portion
(300)；
The pedestal (100), multi-stage impeller portion (200) and shield electric machine portion (300) are sequentially connected；
The multi-stage impeller portion (200) includes: suction inlet (4) on suction inlet under first stage impeller (3) and first stage impeller；
Lower suction inlet outlet choma (3a) is provided under the first stage impeller on suction inlet (3)；
Suction inlet entrance choma (4a) is provided on the first stage impeller on suction inlet (4)；
Lower suction inlet outlet choma (3a) and upper suction inlet entrance choma (4a) are tightly connected.
2. multi-stage shield pump according to claim 1, which is characterized in that be provided on the shield electric machine portion (300)
End bearing block (20) and electric machine stand (13)；
The upper end bearing block (20) is fastenedly connected with electric machine stand (13)；
Reinforcing rib (20c) is provided on the upper end bearing block (20).
3. multi-stage shield pump according to claim 2, which is characterized in that the reinforcing rib (20c) is more.
4. multi-stage shield pump according to claim 1, which is characterized in that be provided on the pedestal (100) and pump out the mouth of a river
Flange (39) and connection flange (37)；The pump delivery port flanges (39) match connection with connection flange (37)；The attached method
Blue (37) can rotate.
5. multi-stage shield pump according to claim 4, which is characterized in that the pump delivery port flanges (39) and connection flange
(37) sealing ring (38) are provided between.
6. multi-stage shield pump according to claim 5, which is characterized in that the sealing ring (38) includes: the first sealing
(38a) and the second sealing (38d), first sealing (38a) are detachably connected with the second sealing (38d).
7. multi-stage shield pump according to claim 1, which is characterized in that lower suction inlet outlet choma (3a) and upper suction
Inlet choma (4a) welds together.
8. multi-stage shield pump according to claim 1, which is characterized in that be equipped in the shield electric machine portion (300)
End bearing (22)；The upper end bearing (22) is made of carbofrax material；Upper shaft is provided on the upper end bearing (22)
Hold self-lubricating runner (22a).
9. multi-stage shield pump according to claim 8, which is characterized in that in being equipped in the shield electric machine portion (300)
Between bearing (28)；Intermediate bearing runner (28a) is provided on the intermediate bearing (28).
10. multi-stage shield pump according to claim 9, which is characterized in that the internal diameter ratio of the intermediate bearing runner (28a)
The internal diameter of upper end bearing self-lubricating runner (22a) is small.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910646565.XA CN110230600A (en) | 2019-07-17 | 2019-07-17 | Multi-stage shield pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910646565.XA CN110230600A (en) | 2019-07-17 | 2019-07-17 | Multi-stage shield pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110230600A true CN110230600A (en) | 2019-09-13 |
Family
ID=67855657
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910646565.XA Pending CN110230600A (en) | 2019-07-17 | 2019-07-17 | Multi-stage shield pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110230600A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021060504A1 (en) * | 2019-09-26 | 2021-04-01 | 株式会社荏原製作所 | Vertical multi-stage pump |
| JP2021050723A (en) * | 2019-09-26 | 2021-04-01 | 株式会社荏原製作所 | Vertical multistage pump |
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| CN107524603A (en) * | 2017-10-20 | 2017-12-29 | 项达章 | A kind of vertical two-stage centrifugal pump |
| CN207813960U (en) * | 2017-12-15 | 2018-09-04 | 上海中航泵业股份有限公司 | A kind of vertical multi-stage centrifugal pump |
| CN210343716U (en) * | 2019-07-17 | 2020-04-17 | 上海创科泵业制造有限公司 | Multistage canned motor pump |
-
2019
- 2019-07-17 CN CN201910646565.XA patent/CN110230600A/en active Pending
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08144988A (en) * | 1994-11-22 | 1996-06-04 | Teikoku Denki Seisakusho:Kk | Bulk type canned motor pump |
| CN201925241U (en) * | 2010-06-01 | 2011-08-10 | 江苏海狮泵业制造有限公司 | Cavitation-resistant structure of wedge-shaped ring for centrifugal pump |
| CN201865962U (en) * | 2010-11-24 | 2011-06-15 | 长沙天鹅工业泵股份有限公司 | Vertical bisection sealing ring structure |
| CN202417953U (en) * | 2011-12-26 | 2012-09-05 | 大连环友屏蔽泵有限公司 | Multistage shield pump for conveying easily vaporized media |
| CN102840142A (en) * | 2012-09-26 | 2012-12-26 | 上海创科泵业制造有限公司 | Multistage shield pump placed on electric motor |
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| CN206801929U (en) * | 2017-05-19 | 2017-12-26 | 利欧集团浙江泵业有限公司 | A kind of sealing structure of the impeller port ring of water pump |
| CN107524603A (en) * | 2017-10-20 | 2017-12-29 | 项达章 | A kind of vertical two-stage centrifugal pump |
| CN207813960U (en) * | 2017-12-15 | 2018-09-04 | 上海中航泵业股份有限公司 | A kind of vertical multi-stage centrifugal pump |
| CN210343716U (en) * | 2019-07-17 | 2020-04-17 | 上海创科泵业制造有限公司 | Multistage canned motor pump |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2021060504A1 (en) * | 2019-09-26 | 2021-04-01 | 株式会社荏原製作所 | Vertical multi-stage pump |
| JP2021050723A (en) * | 2019-09-26 | 2021-04-01 | 株式会社荏原製作所 | Vertical multistage pump |
| JP7353893B2 (en) | 2019-09-26 | 2023-10-02 | 株式会社荏原製作所 | vertical multistage pump |
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