CN218454826U - Submersible pump - Google Patents
Submersible pump Download PDFInfo
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- CN218454826U CN218454826U CN202222518374.5U CN202222518374U CN218454826U CN 218454826 U CN218454826 U CN 218454826U CN 202222518374 U CN202222518374 U CN 202222518374U CN 218454826 U CN218454826 U CN 218454826U
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- spacer
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- submersible pump
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Abstract
The utility model relates to a submersible pump, which comprises a permanent magnet synchronous motor and an impeller; the permanent magnet synchronous motor comprises a power line inlet chamber and a water pump shell; a rotor is arranged in the water pump shell, bearings are respectively arranged at the top end and the bottom end of the rotor, and a stator is sleeved on the outer ring of the rotor; a spacer bush is arranged in a gap between the rotor and the stator, and the rotor, the top end of the rotor and the bearing at the bottom end of the rotor are all covered by the spacer bush; the impeller is arranged in the volute, a motor shaft arranged in the rotor extends out of the spacer bush and then is connected with the impeller in the volute, and water outlets are formed in one side and the bottom end of the volute respectively. Set up the spacer in the clearance between rotor and stator, realize the isolation protection effect to the stator through the spacer, under the condition of intaking in permanent magnet synchronous machine, water gets into in the rotor, and can't get into by the spacer separated in the stator, avoids the damage that the stator short circuit caused, reduces the fault point, has postponed the life of immersible pump.
Description
Technical Field
The utility model relates to a water pump especially relates to a immersible pump.
Background
The submersible pump is an important device for pumping water from a deep well. When in use, the whole unit is submerged to work, and underground water is extracted to the ground surface, so that the unit is used for domestic water, mine emergency, industrial cooling, farmland irrigation, seawater lifting and ship load regulation, and can also be used for fountain landscape.
The current immersible pump is structural, in order to prevent that water from entering the inside of the motor from the water pump impeller side, has all installed twice mechanical seal additional, and wherein, volute and grease chamber are one, and grease chamber and motor chamber are one, even like this, along with the lapse of time, still can not avoid water to get into the motor chamber, cause the motor short circuit to burn out, because, no matter which kind of mechanical seal all is two sealed face constitutions of sound, and the infiltration of water can not be avoided to this kind of sliding construction. Therefore, there is a need for a submersible pump that isolates water to prevent water from entering the pump and causing damage to the pump.
SUMMERY OF THE UTILITY MODEL
The present invention aims at solving at least one of the technical problems in the related art to a certain extent. Therefore, the utility model provides a immersible pump.
The utility model provides a technical scheme that its technical problem adopted is: a submersible pump comprises a permanent magnet synchronous motor and an impeller;
the permanent magnet synchronous motor comprises a power line inlet chamber and a water pump shell; a wiring board is arranged in the power line inlet chamber, and is electrically connected with a power line of the water pump;
a rotor is arranged in the water pump shell, bearings are respectively arranged at the top end and the bottom end of the rotor, a stator is sleeved on the outer ring of the rotor, and the stator is electrically connected with a wiring board;
a gap is reserved between the outer wall of the rotor and the inner wall of the stator, a spacer bush is arranged on the gap between the rotor and the stator, the top end of the spacer bush is connected with the inner top end of the water pump shell, and the bottom end of the spacer bush is connected with the inner bottom end of the water pump shell; the rotor, the top end of the rotor and the bearings at the bottom end of the rotor are all covered by the spacer sleeve;
the impeller is arranged in the volute, a motor shaft arranged in the rotor extends out of the spacer bush and then is connected with the impeller in the volute, and water outlets are formed in one side and the bottom end of the volute respectively.
In a preferred embodiment of the present invention, the spacer is made of stainless steel.
In a preferred embodiment of the present invention, bearing seats are respectively disposed at the top end and the inner bottom end in the spacer, and the bearings at the top end and the bottom end of the rotor are respectively disposed in the bearing seats.
In a preferred embodiment of the present invention, the bearing is a stainless steel bearing or a ceramic bearing or a water lubricated bearing.
In a preferred embodiment of the present invention, the gap between the outer rotor wall and the inner stator wall is 2-3mm.
In a preferred embodiment of the present invention, the gap between the outer rotor wall and the inner stator wall is 2mm.
In a preferred embodiment of the present invention, the bottom end of the spacer is fixedly welded to the inner bottom end of the water pump housing through a flange.
In a preferred embodiment of the present invention, a sealing member is disposed on the volute casing at a position corresponding to the position extending out of the motor shaft.
In a preferred embodiment of the present invention, the rotor surface is coated with a corrosion-resistant coating.
The utility model has the advantages that: the spacer bush is arranged in the gap between the rotor and the stator, the stator is isolated and protected through the spacer bush, and under the condition that water enters the permanent magnet synchronous motor, the water enters the rotor and cannot enter the stator separated by the spacer bush, so that the damage caused by the short circuit of the stator is avoided; the utility model discloses simple structure has reduced mechanical seal part, and the immersible pump structure is compacter, has stopped the emergence of the short circuit condition that PMSM intake caused through setting up the spacer, reduces the fault point, has delayed the life of immersible pump.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic view of the spacer structure of the present invention;
in the figure:
a power line inlet room 100; a wiring board 101; a water pump power cord 102;
a water pump housing 200; a rotor 201; a bearing 202; a stator 203; a gap 204; a spacer 205; a motor shaft 206; a flange 207; an electrical wire 208;
a scroll 300; an impeller 301; a water outlet 302.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are exemplary only for the purpose of explaining the present invention, and should not be construed as limiting the present invention.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and to simplify the description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention. Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, features defined as "first", "second", may explicitly or implicitly include one or more of the described features. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.
A submersible pump as shown in fig. 1 and 2, comprising a permanent magnet synchronous motor and an impeller 301;
the permanent magnet synchronous motor comprises a power line inlet chamber 100 and a water pump shell 200; a wiring board 101 is arranged in the power line inlet chamber 100, and the wiring board 101 is electrically connected with a water pump power line 102; the mains supply is connected through a water pump power line 102;
a rotor 201 is arranged in the water pump housing 200, bearings 202 are respectively arranged at the top end and the bottom end of the rotor 201, a stator 203 is sleeved on the outer ring of the rotor 201, and the stator 203 is electrically connected with the wiring board 101 through an electric wire 208;
a gap 204 is reserved between the outer wall of the rotor 201 and the inner wall of the stator 203, a spacer 205 is arranged on the gap between the rotor 201 and the stator 203, the top end of the spacer 205 is connected with the inner top end of the water pump shell 200, and the bottom end of the spacer 205 is connected with the inner bottom end of the water pump shell 200; the rotor 201, the bearings 202 at the top end and the bottom end of the rotor are all covered by the spacer sleeve 205;
the impeller 301 is arranged in the volute 300, the motor shaft 206 arranged in the rotor 201 extends out of the spacer 205 and then is connected with the impeller 301 in the volute 300, and one side and the bottom end of the volute 300 are respectively provided with a water outlet 302.
The submersible pump of the utility model realizes the water outlet of the water outlet 302 on the volute by adopting the permanent magnet synchronous motor to drive the impeller to rotate; in the structure, a gap 204 is reserved between a rotor 201 and a stator 203, and a spacer 205 for wrapping the rotor is arranged on the gap 204, so that even if water enters the permanent magnet synchronous motor, the water directly enters the rotor 201 and cannot be in contact with the stator 203, and the short circuit damage of the permanent magnet synchronous motor cannot be caused.
Preferably, the spacer 205 is made of stainless steel, and particularly, 316 stainless steel is used for the spacer, and the 316 stainless steel spacer realizes the isolation between the rotor and the stator, thereby playing a role in sealing the stator, and even if the rotor is soaked in water for a long time, the stator will not be damaged, and the service life of the spacer is prolonged due to the material of 316.
As an preferred mode, in this application top and interior bottom do not are equipped with the bearing frame in the spacer 205, the bearing of rotor top and bottom corresponds the setting in the bearing frame respectively for the spacer also wraps the bearing and establishes wherein, acts on a preferred mode, in this application the bearing is stainless steel bearing or ceramic bearing or water lubricated bearing, guarantees that the bearing has corrosion-resistant characteristic, prolongs the life of bearing.
The gap between the outer wall of the rotor 201 and the inner wall of the stator 203 in this application is 2-3mm. Preferably, the clearance between rotor outer wall and the stator inner wall is 2mm for remain the clearance of being convenient for install the spacer sleeve between stator and the rotor, also avoid the too big normal operating that influences the motor in clearance simultaneously.
In order to increase the connection strength between the spacer 205 and the inner bottom end of the water pump housing 200, the bottom end of the spacer 205 is fixedly welded to the inner bottom end of the water pump housing through a flange 207.
In this application the position department that corresponds the motor shaft that stretches out on the volute 300 matches and is equipped with the sealing member, has increased the leakproofness of volute, avoids in the transport medium great granule gets into the rotor of spacer, avoids the damage of granule to the rotor.
The surface coating of rotor 201 in this application has corrosion-resistant coating for this immersible pump is applicable to and carries corrosive liquids, prolongs the life of immersible pump.
A spacer 205 is arranged in a gap 204 between the rotor 201 and the stator 203, the spacer 205 realizes the isolation protection effect on the stator 203, and under the condition that water enters the permanent magnet synchronous motor, the water enters the rotor and cannot enter the stator 203 separated by the spacer 205, so that the damage caused by the short circuit of the stator 203 is avoided; the utility model discloses simple structure has reduced mechanical seal part, and the immersible pump structure is compacter, has stopped the emergence of the short circuit condition that PMSM intake caused through setting up spacer 205, reduces the fault point, has prolonged the life of immersible pump.
In the description herein, references to the description of the terms "one embodiment," "certain embodiments," "an illustrative embodiment," "an example," "a specific example" or "some examples" or the like mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
In summary, although the present invention has been described with reference to the preferred embodiments, the above-described preferred embodiments are not intended to limit the present invention, and those skilled in the art can make various changes and modifications without departing from the spirit and scope of the present invention, so that the scope of the present invention shall be determined by the scope of the appended claims.
Claims (9)
1. The submersible pump is characterized by comprising a permanent magnet synchronous motor and an impeller;
the permanent magnet synchronous motor comprises a power line inlet chamber and a water pump shell; a wiring board is arranged in the power line inlet chamber, and is electrically connected with a power line of the water pump;
a rotor is arranged in the water pump shell, bearings are respectively arranged at the top end and the bottom end of the rotor, a stator is sleeved on the outer ring of the rotor, and the stator is electrically connected with a wiring board;
a gap is reserved between the outer wall of the rotor and the inner wall of the stator, a spacer bush is arranged on the gap between the rotor and the stator, the top end of the spacer bush is connected with the inner top end of the water pump shell, and the bottom end of the spacer bush is connected with the inner bottom end of the water pump shell; the rotor, the top end of the rotor and the bearings at the bottom end of the rotor are all covered by the spacer sleeve;
the impeller is arranged in the volute, a motor shaft arranged in the rotor extends out of the spacer bush and then is connected with the impeller in the volute, and water outlets are formed in one side and the bottom end of the volute respectively.
2. The submersible pump of claim 1, wherein the spacer is made of a stainless steel material.
3. The submersible pump of claim 2, wherein the top end and the bottom end of the spacer sleeve are respectively provided with a bearing seat, and the bearings at the top end and the bottom end of the rotor are respectively and correspondingly arranged in the bearing seats.
4. The submersible pump of claim 1, wherein the bearing is a stainless steel bearing or a ceramic bearing or a water lubricated bearing.
5. The submersible pump of claim 1, wherein the gap between the outer rotor wall and the inner stator wall is 2-3mm.
6. The submersible pump of claim 5, wherein the gap between the outer rotor wall and the inner stator wall is 2mm.
7. The submersible pump of claim 1, wherein the spacer bottom end is fixedly welded to the inner bottom end of the pump housing by a flange.
8. The submersible pump of claim 1, wherein the volute is provided with a seal at a location corresponding to the location of the shaft of the motor.
9. The submersible pump of any of claims 1-8, wherein the rotor surface is coated with a corrosion resistant coating.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222518374.5U CN218454826U (en) | 2022-09-22 | 2022-09-22 | Submersible pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222518374.5U CN218454826U (en) | 2022-09-22 | 2022-09-22 | Submersible pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218454826U true CN218454826U (en) | 2023-02-07 |
Family
ID=85125847
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222518374.5U Active CN218454826U (en) | 2022-09-22 | 2022-09-22 | Submersible pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218454826U (en) |
-
2022
- 2022-09-22 CN CN202222518374.5U patent/CN218454826U/en active Active
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