CN201925178U - Submersible tubular pump - Google Patents
Submersible tubular pump Download PDFInfo
- Publication number
- CN201925178U CN201925178U CN2011200232710U CN201120023271U CN201925178U CN 201925178 U CN201925178 U CN 201925178U CN 2011200232710 U CN2011200232710 U CN 2011200232710U CN 201120023271 U CN201120023271 U CN 201120023271U CN 201925178 U CN201925178 U CN 201925178U
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- China
- Prior art keywords
- motor
- submersed
- reducing mechanism
- submersible motor
- flow pump
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Abstract
The utility model provides a submersible tubular pump which comprises a hydraulic part (1), a submersible motor (3) and a pump body (4), and is characterized by comprising a planetary gear reducing mechanism (2) as well, wherein the planetary gear reducing mechanism (2) comprises a housing, a planetary frame (21), a sun wheel (22), a planetary wheel (24) and a gear sleeve coupler (25), the rotor shaft (37) of the submersible motor is connected with the sun wheel (22) through the gear sleeve coupler (25), the planetary wheel (24) is meshed with the outer gear of the sun wheel and the inner gear (23) arranged at the inner side of a planetary gear reducing mechanism shell, one end of the planetary frame (21) is used as the rotating shaft of the planetary wheel (24), and the other end of the planetary frame (21) is connected with a pump shaft (17). The submersible tubular pump has the advantages that the hydraulic loss is small, the efficiency is high, the volume is small, and the weight is light.
Description
Technical field
The utility model relates to the hydraulic machinery technical field, and what be specifically related to is a kind of submersed three-flow pump.
Background technique
Submersed three-flow pump is a kind of horizontally-mounted water pump, has the characteristics of the straight perforation of current, is fit to the operating mode of big flow low lift, is widely used in occasions such as field irrigation, city river ejectment water, town and country flood control.Along with country strengthens the investment of infrastructure construction, through-flow pump is also to large scale development, and flow is big, and lift is low, and specific speed is very big, and rotating speed is very low simultaneously, and rotating speed of motor is no more than 300rpm usually.At present, in order to reach such performance, all be the mode that adopts Low speed electric motor and hydraulic part direct connection.
Adopt the through-flow pump of this mode, its matching used motor is the slow-revving special submersible motor of high number of poles, radial dimension is very big, usually surpasses the radial dimension of the impeller of water pump, so just must strengthen the size of pump shell, to guarantee the cross-section area of necessary mistake water flow passage, for motor is installed, have to strengthen the outlet diameter of water pump stator simultaneously, this waterpower design with regard to feed water pump brings following adverse consequences: 1. the angle of flare of stator is bigger than normal, cause the separation of flow easily, lower efficiency.2. the wetted perimeter of stator outlet increases, and hydraulic radius reduces, and increases frictional loss, also can lower efficiency.3. the hydraulic model of higher specific speed, efficient own is not high, and cavitation performance is relatively poor.
Secondly, the slow-revving motor of high number of poles, power factor is very little, inefficiency, the long-term use, the Economy extreme difference influences user's economic benefit.
The 3rd, such design brings hidden danger also can for the safe handling of motor.The temperature rise of submersible motor is an important indicator of weighing motor safety, because efficient is low, the motor feels hot, and amount is very big, cause the swell increment of rotor very big, be equivalent to reduce the air gap between the stator and rotor, the accident that rotor rubs mutually often occurred, reduced the whole aircraft reliability of submersed three-flow pump.
The 4th, the volume of whole through-flow pump unit is increased, Master Cost and manufacturing expense increase, and have increased manufacture cost.
The 5th, the weight of whole through-flow pump unit is increased, increase the investment of pumping plant infrastructure portion, and increase installation difficulty.
The model utility content
The utility model provides a kind of submersed three-flow pump, and it can overcome the defective that exists in the prior art, has that hydraulic loss is little, efficient is high, volume is little, lightweight advantage.
For achieving the above object, the technical solution of the utility model is: a kind of submersed three-flow pump, comprise hydraulic part, submersible motor, the pump housing, it is characterized in that, also comprise planetary gear reducing mechanism, described planetary gear reducing mechanism comprises housing, planet carrier, sun gear, planet wheel, tooth cover coupling; The rotor shaft of described submersible motor is connected with described sun gear by tooth cover coupling, external tooth on described planet wheel and the sun gear and the internal tooth that is arranged at planetary gear reducing mechanism housing inboard are meshed, described planet carrier one end is as the rotating shaft of planet wheel, and the other end is connected with water pump spindle.
As improvement of the present utility model, described submersible motor is the submersible motor of rotating speed more than or equal to 980rpm.
As improvement of the present utility model, between the housing inboard of described submersible motor and motor stator, be provided with heat exchanging tube, described heat exchanging tube one end is communicated with motor input end cavity, and the other end is communicated with the motor output end cavity.
As improvement of the present utility model, described planet carrier central shaft hole is made the involute splines structure, is connected by spline with water pump spindle.
As improvement of the present utility model, the shaft extension portion of described rotor axis of electric is provided with mechanical seal, and the shaft extension end of described water pump spindle is provided with mechanical seal.
The utility model is compared with prior art, has the following advantages:
1. by using plane table thermoconductivity meter, the rotating speed of water pump is selected within a large range, be convenient to select for use ripe, excellent hydraulic model.
2. by using plane table thermoconductivity meter, can select high-revolving motor for use, reduced particularly radial dimension of unit volume, thereby reduced water pump stator outlet diameter, avoid reducing, also reduced manufacture cost simultaneously because of the hydraulic loss increase that angle of flare increases and wetted perimeter increase in stator outlet brings and the pump efficiency of stator.
3. by selecting high-revolving motor for use, improved electric efficiency, avoided energy waste, reduced unit weight, made installation and maintenance easy.
4. by heat exchanging tube is set in submersible motor, strengthen motor internal air flows and with the heat exchange of outside current, avoid influencing the normal operation of through-flow pump because of motor overheating.
Description of drawings
Fig. 1 is the structural representation of existing submersed three-flow pump, Fig. 2 is a submersed three-flow pump structural representation of the present utility model, Fig. 3 is the mobile direction schematic representation of submersible motor inner air of the present utility model, and Fig. 4 is the hydraulic part structural representation, and Fig. 5 is the planetary gear reducing mechanism structural representation.
Among the figure, 1. hydraulic part, 11. water inlet loudspeaker, 12. spherical chamber, 13. impeller, 14. diffusers, 15. angular contact ball bearings, 16. deep groove ball bearings one, 17. water pump spindle, 2. planetary gear reducing mechanism, 21. planet carriers, 22. sun gears, 23. internal gear, 24. planet wheels, 25. teeth cover coupling, 3. motor, 31. roller bearing, 32. rotor fan blades, 33. stators, 34. rotors, 35. heat exchanging tube, 36. deep groove ball bearings, two, 37. rotor shafts, the 4. pump housing.
Embodiment
Below in conjunction with drawings and Examples the utility model is described further.
Submersible motor of the present utility model and planetary gear reducing mechanism are fixed on the inside of the pump housing 4, form the mistake water flow passage of water pump between the shell of motor and planetary gear reducing mechanism and the pump housing 4.After the end of rotor axis of electric 37 passes deep groove ball bearing 2 36, make 22 unsteady connections of sun gear of external splines by a tooth cover coupling 25 and an end; The layout of motor bearings only need consider to bear the weight of rotor part, the axial force that produces when not needing to bear impeller work, therefore bearing structure is greatly simplified, and only gets final product (perhaps using two roller bearings) with a roller bearing 31 and a deep groove ball bearing 2 36 usually.Each planet wheel shaft of planetary gear reducing mechanism is supported by two selfaligning roller bearings, like this, the swing of certain amplitude just can be arranged during planet wheel work, can effectively eliminate the load uneven distribution that machining error is brought, the load trend that three planet wheels are born is even, prolong the life-span of gear, improve the reliability of planetary gear reducing mechanism.Planet carrier 21 can carry out accurate axially locating by a deep groove ball bearing and a selfaligning roller bearing supporting, avoids the axial float of planet carrier.Planet carrier 21 is as the output terminal of reducing gear, and its central shaft hole is made the involute splines structure, is connected by spline with water pump spindle 17; All gear pairs of planetary gear reducing mechanism 2 all leave backlash, and profile of tooth when assembling, needn't be made profile of tooth and aim at and can be inserted in smoothly like this through grinding.Water pump spindle 17 is by two angular contact ball bearings 15 and deep groove ball bearing one 16 supportings of series connection, the axial force that produces when wherein the angular contact ball bearing 15 of two series connection is mainly born impeller 13 work, also can bear simultaneously the radial force that impeller 13 weight, water pump spindle 17 weight and impeller unbalanced weight volume production are given birth to, such bearing structure has effectively shortened the length of shaft of water pump spindle 17, has improved the rigidity of axle.
In another embodiment, described submersible motor, its support is a kind of welded housing, between housing inboard and motor stator, be provided with tubular heat exchanger, be specially by an end is set and be communicated with motor input end cavity, the heat exchanging tube that the other end is communicated with the motor output end cavity is with two cavitys connections of motor.During machine operation, be contained in the epitrochanterian fan blade of input end, hot air in the motor input end cavity is blowed to heat exchanging tube, hot air is circulated according to the direction of " input end cavity---heat exchanging tube---output terminal cavity---air gaps between stator and rotor---input end cavity ", and Fig. 3 is the air-flow direction schematic representation in the electric machine casing.The flow direction of hot air in heat exchanging tube with the pipe outside water (flow) direction opposite, good effect of heat exchange, hot air enters air gap after fully being cooled off in heat exchanging tube, take away the heat (mainly being the heat that rotor produces) that motor produces again, heat exchanging tube and support rely on outside current to cool off, make the uniformity of temperature profile of motor internal, effectively reduce the temperature rise of motor, avoid motor overheating to influence the normal operation of through-flow pump.Heat exchanging tube is generally symmetrical distribution along the motor stator peripheral distribution.
In yet another embodiment, be provided with mechanical seal, can prevent that lubricant oil from entering motor cavity, be provided with mechanical seal, be used to prevent that current from entering the grease chamber at the shaft extension end of water pump spindle 17 in the shaft extension portion of rotor axis of electric 37.
Claims (5)
1. submersed three-flow pump, comprise hydraulic part (1), submersible motor (3), the pump housing (4), it is characterized in that, also comprise planetary gear reducing mechanism (2), described planetary gear reducing mechanism (2) comprises housing, planet carrier (21), sun gear (22), planet wheel (24), tooth cover coupling (25); The rotor shaft of described submersible motor (37) is connected with described sun gear (22) by tooth cover coupling (25), described planet wheel (24) is meshed with the internal tooth (23) that is arranged at planetary gear reducing mechanism housing inboard with the external tooth of sun gear, described planet carrier (21) one ends are as the rotating shaft of planet wheel (24), and the other end is connected with water pump spindle (17).
2. a kind of submersed three-flow pump according to claim 1 is characterized in that, described submersible motor (3) is the submersible motor of rotating speed more than or equal to 980rpm.
3. a kind of submersed three-flow pump according to claim 1 and 2, it is characterized in that, be provided with heat exchanging tube (35) at the housing of described submersible motor (3) between the inboard and motor stator (33), described heat exchanging tube (35) one ends are communicated with motor input end cavity, and the other end is communicated with the motor output end cavity.
4. a kind of submersed three-flow pump according to claim 1 is characterized in that, described planet carrier (21) central shaft hole is made the involute splines structure, is connected by spline with water pump spindle (17).
5. a kind of submersed three-flow pump according to claim 4 is characterized in that, the shaft extension portion of described rotor axis of electric (37) is provided with mechanical seal, and the shaft extension end of described water pump spindle (17) is provided with mechanical seal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200232710U CN201925178U (en) | 2011-01-25 | 2011-01-25 | Submersible tubular pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200232710U CN201925178U (en) | 2011-01-25 | 2011-01-25 | Submersible tubular pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201925178U true CN201925178U (en) | 2011-08-10 |
Family
ID=44429029
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011200232710U Expired - Lifetime CN201925178U (en) | 2011-01-25 | 2011-01-25 | Submersible tubular pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201925178U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104514730A (en) * | 2014-12-26 | 2015-04-15 | 合肥恒大江海泵业股份有限公司 | Submersible electric pump |
| CN113217409A (en) * | 2021-06-17 | 2021-08-06 | 南京南微环保科技有限公司 | Energy-saving type tubular pump for controlling algae |
-
2011
- 2011-01-25 CN CN2011200232710U patent/CN201925178U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104514730A (en) * | 2014-12-26 | 2015-04-15 | 合肥恒大江海泵业股份有限公司 | Submersible electric pump |
| CN113217409A (en) * | 2021-06-17 | 2021-08-06 | 南京南微环保科技有限公司 | Energy-saving type tubular pump for controlling algae |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: LANSHEN GROUP CO., LTD. Free format text: FORMER NAME: LANSHEN PUMP GROUP CO LTD, NANJING |
|
| CP01 | Change in the name or title of a patent holder |
Address after: 211500 Nanjing Province, Liuhe District, East Road, No. Patentee after: Lanshen Group Co., Ltd. Address before: 211500 Nanjing Province, Liuhe District, East Road, No. Patentee before: Lanshen Pump Group Co., Ltd., Nanjing |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20110810 |