CN2578572Y - Submersible pumps - Google Patents
Submersible pumps Download PDFInfo
- Publication number
- CN2578572Y CN2578572Y CN 02260836 CN02260836U CN2578572Y CN 2578572 Y CN2578572 Y CN 2578572Y CN 02260836 CN02260836 CN 02260836 CN 02260836 U CN02260836 U CN 02260836U CN 2578572 Y CN2578572 Y CN 2578572Y
- Authority
- CN
- China
- Prior art keywords
- motor
- rotor
- stator
- pump
- motor stator
- 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.)
- Expired - Fee Related
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- Structures Of Non-Positive Displacement Pumps (AREA)
- Motor Or Generator Cooling System (AREA)
Abstract
The utility model relates to an oil immersed pump used for conveying inflammable and explosive light oil products, chemical products, etc. The utility model comprises a pump shell, a motor stator, a motor rotor and a motor shaft which are connected into a whole and an impeller arranged on the motor shaft. The utility model is characterized in that the motor stator and the motor rotor are positioned in the pump shell and an outer ring path is arranged between the motor stator and the pump shell. The utility model uses a medium flowing path with unique design to enable the conveyed media to flow through the outer wall of the motor stator to cool a motor. A movable sealing structure on a rotor axle is simultaneously cancelled and a small quantity of pump conveying media is guided to enter the inner parts of a bearing and the motor to lubricate and cool the bearing and the motor. The running reliability and the safety of the pump are increased.
Description
[technical field]
The utility model relates to a kind of liquid transporting apparatus, and especially a kind of oil-immersed pump is used to carry media such as inflammable, explosive light-end products, chemicals.
[background technique]
Existing oil-immersed pump, normally the end at the pump housing is provided with motor so that power to be provided, in the fed sheet of a media process, there is following defective: first, the cooling of motor is finished by the heat exchange of motor housing and quiescent atmosphere, the motor cooling effect is not good, temperature rise is big, and the reliability and security of pump operation is bad; The second, be subjected to the influence of fed sheet of a media for fear of motor, sealing configuration (as mechanical seal) must be set on the motor shaft, easily leak during motor rotation, directly have influence on pump and motor reliability of operation and Security; The 3rd, the bearing on the motor shaft can not get good lubricating after working long hours, influence its working life.
[model utility content]
The technical assignment of the technical problems to be solved in the utility model and proposition is to overcome the technological deficiency that existing product exists, and a kind of oil-immersed pump good, safe and reliable to operation that dispels the heat is provided, and further improves the lubricating condition of bearing.
The technological scheme that the utility model is taked is: oil-immersed pump, comprise the impeller on pump case, motor stator, the rotor that is connected as a single entity and motor shaft and the motor shaft, it is characterized in that described motor stator, rotor are positioned at described pump case, have outer ring channel between described motor stator and the pump case.During pump operation, outer ring channel makes the MEDIA FLOW of conveying cross the motor stator outer wall as the passage of MEDIA FLOW warp, and motor is cooled off.The pump of this structure also can be used for transporting water.
Described oil-immersed pump is characterized in that described pump case is built-in with upper bearing bracket and step, offers a seat of honour passage corresponding with outer ring channel and a following passage on the described upper and lower bearing support respectively; Described rotor that is connected as a single entity and motor shaft are positioned on the upper and lower bearing support through bearing, ring passage in having between described motor stator and the rotor; Described impeller is positioned at the step downside.Be stressed that especially the utility model cancelled the sealing configuration on the existing oil-immersed pump motor shaft, when pump operation, allow medium to enter bearing and in interior ring passage, flow, rotor and motor stator inwall are cooled off, simultaneously bearing is lubricated and cools off.
Described oil-immersed pump is characterized in that described bearing is cod and the radial bearing that cooperatively interacts; The upside of described upper bearing bracket has a groove, and this groove is built-in with filter core; Offer through hole on the described impeller.Filter core is used for impurity screening, and through hole can the balance axial force of impeller, the flowing velocity of control media in bearing and interior ring passage.
Described oil-immersed pump is characterized in that a step is arranged in the described pump case, and there is an end cap pump case upper end, and described step, motor stator and upper bearing bracket are positioned between described step and the end cap.It is simple in structure, and easy installation and removal is beneficial to maintenance.
Described oil-immersed pump; it is characterized in that described motor stator, rotor coat stator big envelope and rotor big envelope outward respectively; be used for motor stator, rotor are protected; admittedly seal fairlead on the described stator big envelope; embedding sealing compound in described stator big envelope and the rotor big envelope; make stator big envelope and rotor big envelope be combined into inseparable integral body with motor stator and rotor respectively, avoid the potential safety hazard in the running.
The utility model compared with prior art has following advantage, has improved oil-immersed pump reliability of operation and Security.
1, saved the shell of motor, the rotor and the stator of motor placed in the pump case, they are organically integrated, it is simple in structure, and is reasonable in design, is skillfully constructed low cost of manufacture;
2, with the annular space between pump case and the motor stator as the passage of flowing through that is transferred medium, in pump and machine operation process, the medium that flows directly effectively cools off the motor stator outer wall, cooling effect is obvious;
3, the sealing configuration of cancellation on the motor shaft, guiding is transferred the interior ring passage of MEDIA FLOW between the bearing on the motor shaft and motor stator and rotor, and bearing is lubricated and cools off, and simultaneously motor stator inwall and rotor is cooled off;
4, outside motor stator, rotor, coat stator big envelope and rotor big envelope respectively, embedding sealing compound in stator big envelope and the rotor big envelope, make stator big envelope and rotor big envelope be combined into inseparable integral body with motor stator and rotor respectively, avoid the potential safety hazard in the running.
Below in conjunction with Figure of description the utility model is described in further detail.
[description of drawings]
Fig. 1 is a structural representation of the present utility model.
Among the figure: the 1-fairlead, the 2-seal ring, the 3-end cap, the 4-pump case, the 5-upper bearing bracket, the 6-motor stator, 7-stator big envelope, the 8-rotor, 9-rotor big envelope, axial bearing under the 10a-, the 10b-lower radial bearing, the 11-step, the following passage of 12-, the 13-slit, the 14-stator, the 15-impeller, the 16-nut, the 17-liquid entering hole, the 18-key, the 19-through hole, the 20-step, the 21-outer ring channel, ring passage in the 22-, 23-seat of honour passage, the last cod of 24a-, the last radial bearing of 24b-, the 25-motor shaft, the 26-filter core, the 27-liquid outlet.
[embodiment]
As shown in the figure, the utility model mainly comprises the impeller 15 on pump case 4, motor stator 6, the rotor 8 that is connected as a single entity and motor shaft 25 and the motor shaft; Wherein pump case 4 lower ends have horizontal liquid entering hole 17; The inwall of pump case has a step 20, location step 11 on the step 20; The lower end of motor shaft 25 is by axial bearing 10a and lower radial bearing 10b are positioned on the step 11 down, and be connected with nut 16 by key 18 with the impeller 15 that is positioned at the step downside, the upper end of motor shaft 25 then is positioned on the upper bearing bracket 5 by last cod 24a and last radial bearing 24b; Motor stator 6 is positioned at the outside of rotor 8 and is fixed by upper bearing bracket 5 and step 11, and forms outer ring channel 21 between the pump case 4, and ring passage 22 in forming between the rotor 8; Offer a seat of honour passage 23 and a following passage 12 on the upper and lower bearing support respectively; And the groove of upper bearing bracket 5 upsides is built-in with filter core 26; The end cap 3 that is positioned at pump case 4 upper ends is pressed on the upper bearing bracket 5; Offer through hole 19 on the impeller 15.Can proper functioning in order to ensure motor stator 6, rotor 8, at inwall, end face and the outer wall clad welded all-in-one-piece stator big envelope 7 of motor stator, embedding sealing compound in the stator big envelope; At the outer wall and the end face clad welded all-in-one-piece rotor big envelope 9 of rotor, and rotor big envelope 9 and motor shaft 25 is integrally welded mutually, embedding sealing compound in the rotor big envelope.The upper-end surface welding lead pipe 1 of stator big envelope 7 is used to draw the motor lead, and fairlead 1 passes upper bearing bracket 5 and end cap 3 and by seal ring 2 sealings that are embedded in the end cap.
During pump work, because the pumping action of impeller, medium enters pump case 4 through liquid entering hole 17, the liquid outlet 27 inflow pump external pipelines that the impeller 15 of flowing through successively, stator 14, a following passage 12, outer ring channel 21, seat of honour passage 23 arrive on the end cap.Around here, in outer ring channel, constantly the medium that flows and the outer wall of stator big envelope constantly carry out exchange heat, make the motor stator can be not overheated.In addition, because impeller is to the castering action of medium, the pressure of medium in filter core 26 upside cavitys will be higher than the pressure of impeller 15 inlets, thereby also has such media flow: filter core 26 → last radial bearing 24b → last cod 24a → interior ring passage 22 → following axial bearing 10a → lower radial bearing 10b → slit 13 → through hole 19; This flows lubricated on the one hand and has cooled off the bearing in the running, has improved the bearing reliability of operation; On the other hand, the medium that flows has been taken away the heat of rotor and partial stator, makes motor stator, the rotor can be not overheated.
Claims (5)
1, oil-immersed pump, comprise the impeller (15) on pump case (4), motor stator (6), the rotor (8) that is connected as a single entity and motor shaft (25) and the motor shaft, it is characterized in that described motor stator (6), rotor (8) are positioned at described pump case (4), have outer ring channel (21) between described motor stator (6) and the pump case (4).
2, oil-immersed pump according to claim 1 is characterized in that described pump case (4) is built-in with upper bearing bracket (5) and step (11), offers a seat of honour passage (23) corresponding with outer ring channel and a following passage (12) respectively on the described upper and lower bearing support; Described rotor that is connected as a single entity (8) and motor shaft (25) are positioned on the upper and lower bearing support (5,11) through bearing, ring passage (22) in having between described motor stator (6) and the rotor (8); Described impeller (15) is positioned at step (11) downside.
3, oil-immersed pump according to claim 2 is characterized in that described bearing is cod and the radial bearing that cooperatively interacts; The upside of described upper bearing bracket (5) has a groove, and this groove is built-in with filter core (26); Offer through hole (19) on the described impeller (15).
4, oil-immersed pump according to claim 2, it is characterized in that a step (20) is arranged in the described pump case (4), there is an end cap (3) the pump case upper end, and described step (11), motor stator (6) and upper bearing bracket (5) are positioned between described step (20) and the end cap (3).
5, according to claim 1,2,3 or 4 described oil-immersed pumps, it is characterized in that coating stator big envelope (7) and rotor big envelope (9) respectively outside described motor stator (6), the rotor (8), seal fairlead (1) on the described stator big envelope (7) admittedly; Described stator big envelope (7) and the interior embedding sealing compound of rotor big envelope (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02260836 CN2578572Y (en) | 2002-10-18 | 2002-10-18 | Submersible pumps |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02260836 CN2578572Y (en) | 2002-10-18 | 2002-10-18 | Submersible pumps |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2578572Y true CN2578572Y (en) | 2003-10-08 |
Family
ID=33727787
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 02260836 Expired - Fee Related CN2578572Y (en) | 2002-10-18 | 2002-10-18 | Submersible pumps |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2578572Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103104506A (en) * | 2011-11-10 | 2013-05-15 | 天津加马机械厂 | Oil-submerged pump capable of transmitting oil products in mass flow and working procedure thereof |
| CN106930957A (en) * | 2017-05-09 | 2017-07-07 | 中科瑞华原子能源技术有限公司 | A kind of single-shaft vertical submerged pump |
| CN110043459A (en) * | 2019-04-26 | 2019-07-23 | 左入林 | A kind of Novel oil well pump |
| US11808268B2 (en) | 2020-10-19 | 2023-11-07 | Milwaukee Electric Tool Corporation | Stick pump assembly |
-
2002
- 2002-10-18 CN CN 02260836 patent/CN2578572Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103104506A (en) * | 2011-11-10 | 2013-05-15 | 天津加马机械厂 | Oil-submerged pump capable of transmitting oil products in mass flow and working procedure thereof |
| CN106930957A (en) * | 2017-05-09 | 2017-07-07 | 中科瑞华原子能源技术有限公司 | A kind of single-shaft vertical submerged pump |
| CN110043459A (en) * | 2019-04-26 | 2019-07-23 | 左入林 | A kind of Novel oil well pump |
| US11808268B2 (en) | 2020-10-19 | 2023-11-07 | Milwaukee Electric Tool Corporation | Stick pump assembly |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20031008 Termination date: 20111018 |