CN210949179U - Submersible electric pump - Google Patents
Submersible electric pump Download PDFInfo
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- CN210949179U CN210949179U CN201921786268.7U CN201921786268U CN210949179U CN 210949179 U CN210949179 U CN 210949179U CN 201921786268 U CN201921786268 U CN 201921786268U CN 210949179 U CN210949179 U CN 210949179U
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Abstract
The utility model discloses a submersible electric pump, which comprises a water inlet block, a water outlet block, a stator and a rotor; the water inlet block and the water outlet block are respectively provided with a circular water inlet hole and a circular water outlet hole; the stator comprises a stator core, a winding wire and a base, two ends of the base are respectively and fixedly connected with the water inlet block and the water outlet block, and an accommodating section is formed in the inner side wall of the base; the stator iron core is fixedly connected to the side wall of the accommodating section, and the winding group is wound on the stator iron core; the rotor includes rotor core, a rotation section of thick bamboo and impeller, it rotates to connect in holding the interval to rotate a section of thick bamboo, the utility model discloses the inboard does not set up the pivot, and the rivers of being convenient for flow in rotating a section of thick bamboo, and difficult production winding, jam can not receive the conveying medium influence, and safe transport contains impurity sewage etc. and has the double-phase mixture of solid-liquid.
Description
Technical Field
The utility model relates to an electric pump equipment technical field specifically is a submerged motor pump.
Background
The submersible electric pump is a water pump in which a pump body and a motor for driving an impeller of the pump body are submerged to work, so that the submersible electric pump is compact in structure, light in weight and convenient to install, use and transfer. The motor for the existing submersible pump is of a dry type, a semi-dry type, an oil-filled type, a wet type and the like, and in order to ensure the heat dissipation and pressure bearing performance of the motor, the deep well submersible pump usually adopts the wet type motor, a stator winding of the deep well submersible pump adopts a waterproof insulated wire, the influence of water entering the motor is not great, and the sealing structure can be greatly simplified.
However, the central position of the inner side of the existing submersible electric pump is provided with the rotating shaft, so that water flow is inconvenient to flow at the inner side, the performance of the electric pump is affected and reduced, impurities are easy to wind on the rotating shaft, the inner side flow channel is blocked, and meanwhile, the two-phase mixture of solid and liquid is inconvenient to convey due to the influence of a conveying medium.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a submerged motor pump to solve the problem that proposes among the above-mentioned background art.
In order to achieve the above object, the utility model provides a following technical scheme:
a submersible electric pump comprises a water inlet block, a water outlet block, a stator and a rotor;
the water inlet block and the water outlet block are respectively provided with a circular water inlet hole and a circular water outlet hole;
the stator comprises a stator core, a winding group and a base, two ends of the base are respectively and fixedly connected with the water inlet block and the water outlet block, and an accommodating section is formed in the inner side wall of the base; the stator iron core is fixedly connected to the side wall of the accommodating section, and the winding group is wound on the stator iron core;
the rotor comprises a rotor core, a rotating cylinder and an impeller, the rotating cylinder is rotatably connected in the accommodating interval, the rotor core is fixedly connected to the outer side wall of the rotating cylinder, the rotor core and the stator core are arranged oppositely, the impeller is fixedly connected to the inner side wall of the rotating cylinder, and two ends of the rotating cylinder are communicated with the circular water inlet hole and the circular water outlet hole respectively.
As a further aspect of the present invention: the water outlet structure is characterized in that the side walls of the circular water inlet hole and the circular water outlet hole are respectively and fixedly connected with a first blade and a second blade, the first blade and the second blade are respectively arranged on the side walls of the circular water inlet hole and the circular water outlet hole in a circumferential mode, the first blade and the second blade are spoke-shaped space curved surfaces, and the first blade and the second blade both play a role in stabilizing water flow.
As a further aspect of the present invention: the one end of frame is through the tip of first bolt fixed connection at the piece of intaking, the other end of frame passes through the tip of second bolt fixed connection at the piece of exhaling, and the setting of first bolt is convenient for intake block fixed connection in the one end of frame, and the setting of second bolt is convenient for play water piece fixed connection at the other end of frame.
As a further aspect of the present invention: the end part of the impeller is fixedly connected with an impeller handle which is fixedly connected to the inner side wall of the rotating cylinder, and one end of the impeller is fixedly connected to the inner side wall of the rotating cylinder through the impeller handle.
As a further aspect of the present invention: the rotary cylinder is an annular cylinder.
As a further aspect of the present invention: the outer side wall of one end of the rotating cylinder is rotatably connected in the circular water inlet hole through a first radial sliding bearing, and the outer side wall of the other end of the rotating cylinder is rotatably connected in the circular water outlet hole through a second radial sliding bearing.
The first radial sliding bearing and the second radial sliding bearing are both of annular structures, and the inner cavity of the second radial sliding bearing is an annular surface and is fixedly connected to the outer side wall of the rotating cylinder, so that the rotating cylinder is rotatably connected to the side wall of the circular water outlet hole through the two radial sliding bearings, and the outer side wall of the second radial sliding bearing is in sealing connection with the circular water outlet hole; first radial slide bearing chamber is the annular face and fixed connection is on the lateral wall that rotates a section of thick bamboo, consequently realizes rotating a section of thick bamboo through first radial slide bearing and rotates to be connected on the lateral wall of circular inlet opening, second radial slide bearing's lateral wall and circular apopore sealing connection.
As a further aspect of the present invention: the submersible electric pump is characterized by further comprising a shell, rectangular holes are formed in a top plate of the shell, water flowing holes are formed in the left side wall and the right side wall of the shell, the shell is protected, electric wires of the submersible electric pump can penetrate through the rectangular holes and are connected with an external power supply conveniently, water flowing into the shell conveniently through the water flowing holes can play a role in filtering, and grass-shaped sundries in water can be prevented from flowing into the shell to block the submersible electric pump.
As a further aspect of the present invention: through telescopic link fixed connection between the upper surface of shell bottom plate and the frame, the top fixedly connected with of shell connects the bucket, threaded connection has adjusting bolt on the bucket, adjusting bolt's tail end rotates and is connected with the carriage release lever, the upper end sliding connection of carriage release lever is on the inside wall of connecting the bucket, the lower extreme of carriage release lever rotates and connects on the lateral wall of frame, and when the angle of this submerged motor pump circular inlet opening was adjusted to needs, the manual adjusting bolt that rotates of staff to realize that the carriage release lever removes in connecting the bucket, the angle of this submerged motor pump circular inlet opening is adjusted to the in-process that the carriage release lever removed.
As a further aspect of the present invention: the connecting barrel is characterized in that a sliding groove is formed in the inner side wall of the connecting barrel, a sliding block is fixedly connected to the upper end of the moving rod and is connected in the sliding groove in a sliding mode, and the sliding block and the sliding groove are arranged to facilitate the moving rod to move up and down.
As a further aspect of the present invention: the telescopic rod comprises a fixed rod, the bottom end of the fixed rod is fixedly connected to the upper surface of the bottom plate of the shell, a containing groove is formed in the top end surface of the fixed rod and faces downwards, a movable rod is movably connected in the containing groove, the upper end of the movable rod is rotatably connected to the outer side wall of the machine base, and the containing groove is formed so that the movable rod can move in the containing groove conveniently;
the utility model discloses a quick-witted support of moving rod, including the frame, the equal fixedly connected with axis of rotation of tip that the movable rod and carriage release lever are close to the frame, fixedly connected with U-shaped plate on the lateral wall of frame, the axis of rotation rotates to be connected on the inside wall of U-shaped plate, four at least universal wheels are installed to the bottom lateral wall of frame, and the setting through axis of rotation and U-shaped plate is convenient for movable rod or carriage release lever to rotate and is connected on the lateral.
Compared with the prior art, the beneficial effects of the utility model are that:
one, through rotor core fixed connection on the lateral wall of a rotor section of thick bamboo, and rotor core sets up with stator core relatively, impeller fixed connection is on the inside wall of a rotor section of thick bamboo, the both ends of a rotor section of thick bamboo communicate with circular inlet opening and circular apopore respectively, this immersible pump circular telegram back, rotor core drives a rotor section of thick bamboo and impeller and begins to rotate under the effect in magnetic field, rivers are behind the first blade stationary flow of circular inlet opening, realize rivers and flow in a rotor section of thick bamboo by the drive of impeller, later flow behind the second blade stationary flow through the circular apopore of rivers, the inboard of a rotor section of thick bamboo does not set up the pivot, be convenient for rivers flow in a rotor section of thick bamboo, difficult production winding, the jam, can not influenced by the transport medium, safe transport contains impurity sewage etc. and.
The submersible electric pump further comprises a shell, a rectangular hole is formed in a top plate of the shell, water flowing holes are formed in the left side wall and the right side wall of the shell, the shell is protected, electric wires of the submersible electric pump can penetrate through the rectangular hole and are connected with an external power supply conveniently, water flowing into the shell conveniently through the water flowing holes can play a role in filtering, and grass-shaped sundries in water can be prevented from flowing into the shell to cause blockage of the submersible electric pump.
Three, through telescopic link fixed connection between the upper surface of shell bottom plate and the frame, the top fixedly connected with of shell connects the bucket, threaded connection has adjusting bolt on the connection bucket, adjusting bolt's tail end rotates and is connected with the carriage release lever, the upper end sliding connection of carriage release lever is on the inside wall of connection bucket, the lower extreme of carriage release lever rotates and connects on the lateral wall of frame, when the angle of this submerged motor pump circular inlet opening of needs adjustment, the manual rotation adjusting bolt of staff, thereby realize that the carriage release lever removes in connecting the bucket, the angle of this submerged motor pump circular inlet opening is adjusted to the in-process that removes at the carriage release lever.
The submersible electric pump is not provided with a rotating shaft on the inner side, so that water flow can conveniently flow in the rotating cylinder, winding and blocking are not easy to generate, the submersible electric pump can not be influenced by a conveying medium, and solid-liquid two-phase mixtures such as sewage containing impurities and the like can be safely conveyed.
Drawings
FIG. 1 is a schematic view of a submersible electric pump;
FIG. 2 is a schematic view of a water inlet block of a submersible electric pump;
FIG. 3 is a schematic view of a water outlet block in a submersible electric pump;
FIG. 4 is a schematic view of a rotor in an electric submersible pump;
FIG. 5 is a schematic view of an impeller in a submersible electric pump;
figure 6 is a schematic view of a first radial sliding bearing in an electric submersible pump;
figure 7 is a schematic view of a second radial sliding bearing in an electric submersible pump;
figure 8 is a schematic view of the interior of the housing of a submersible electric pump;
FIG. 9 is a schematic view of a telescoping rod in a submersible electric pump;
FIG. 10 is a schematic view of the connection of the connecting barrel and the adjusting bolt in a submersible electric pump;
figure 11 is a schematic view of the connection of the mobile rod and the U-shaped plate of an electric submersible pump;
FIG. 12 is a schematic view of the connection of a movable rod and a U-shaped plate in a submersible electric pump;
in the figure: 1. a U-shaped plate; 2. a rotor; 3. a stator core; 4. winding; 5. a machine base; 6. an accommodation section; 7. a rotor core; 8. a rotating cylinder; 9. an impeller; 10. a water inlet block; 11. water outlet block; 12. a circular water inlet hole; 13. a circular water outlet; 14. a first blade; 15. a second blade; 16. a first bolt; 17. a second bolt; 18. an impeller shank; 19. a first radial sliding bearing; 20. a second radial sliding bearing; 21. a housing; 22. a rectangular hole; 23. a water flowing hole; 24. a telescopic rod; 25. a connecting barrel; 26. Adjusting the bolt; 27. a travel bar; 28. a chute; 29. a slider; 30. fixing the rod; 31. accommodating grooves; 32. a movable rod; 33. and rotating the shaft.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Please refer to FIGS. 1-12
A submersible electric pump comprises a water inlet block 10, a water outlet block 11, a stator and a rotor 2;
the water inlet block 10 and the water outlet block 11 are respectively provided with a circular water inlet hole 12 and a circular water outlet hole 13;
the stator comprises a stator core 3, a winding group 4 and a base 5, two ends of the base 5 are respectively fixedly connected with a water inlet block 10 and a water outlet block 11, and the inner side wall of the base 5 is provided with an accommodating section 6; the stator core 3 is fixedly connected to the side wall of the accommodating section 6, and the winding group 4 is wound on the stator core 3;
The circular water inlet hole 12 and the circular apopore 13 are respectively fixedly connected with a first blade 14 and a second blade 15 on the side wall, the first blade 14 and the second blade 15 are respectively circumferentially arranged on the side wall of the circular water inlet hole 12 and the circular apopore 13, the first blade 14 and the second blade 15 are spoke-shaped space curved surfaces, and the first blade 14 and the second blade 15 both play the role of stabilizing the water flow.
The one end of frame 5 is through the tip of first bolt 16 fixed connection at the piece of intaking 10, and the other end of frame 5 passes through second bolt 17 fixed connection at the tip of the piece of exhaling 11, and the setting of first bolt 16 is convenient for go into water piece 10 fixed connection in the one end of frame 5, and the setting of second bolt 17 is convenient for go out water piece 11 fixed connection at the other end of frame 5.
The end part of the impeller 9 is fixedly connected with an impeller handle 18, the impeller handle 18 is fixedly connected on the inner side wall of the rotating cylinder 8, and one end of the impeller 9 is conveniently and fixedly connected on the inner side wall of the rotating cylinder 8 through the arrangement of the impeller handle 18.
The rotary cylinder 8 is an annular cylinder.
The one end lateral wall of a section of thick bamboo 8 rotates through first radial slide bearing 19 and connects in circular inlet opening 12, and the other end lateral wall of a section of thick bamboo 8 rotates through second radial slide bearing 20 and connects in circular apopore 13.
The first radial sliding bearing 19 and the second radial sliding bearing 20 are both of an annular structure, and an inner cavity of the second radial sliding bearing 20 is an annular surface and is fixedly connected to the outer side wall of the rotating cylinder 8, so that the rotating cylinder 8 is rotatably connected to the side wall of the circular water outlet hole 13 through the two radial sliding bearings 20, and the outer side wall of the second radial sliding bearing 20 is hermetically connected with the circular water outlet hole 13; first radial slide bearing 19 chamber is the toroidal surface and fixed connection is on the lateral wall of a rotation section of thick bamboo 8, consequently realizes rotating a section of thick bamboo 8 through first radial slide bearing 19 and rotates to be connected on the lateral wall of circular inlet opening 12, and second radial slide bearing 20's lateral wall and circular apopore 13 sealing connection.
The submersible electric pump further comprises a shell 21, a rectangular hole 22 is formed in a top plate of the shell 21, water flowing holes 23 are formed in the left side wall and the right side wall of the shell 21, the submersible electric pump is protected due to the fact that the shell 21 is arranged, electric wires of the submersible electric pump can penetrate through the rectangular hole 22 and can be connected with an external power supply conveniently, the water flowing holes 23 enable water of the shell 21 to flow into the shell 21 conveniently, a filtering effect is achieved, and grass-shaped sundries in the water are prevented from flowing into the shell 21 to cause blockage of the submersible electric pump.
Through telescopic link 24 fixed connection between the upper surface of shell 21 bottom plate and the frame 5, the top fixedly connected with of shell 21 connects bucket 25, threaded connection has adjusting bolt 26 on connecting bucket 25, adjusting bolt 26's tail end is rotated and is connected with carriage release lever 27, carriage release lever 27's upper end sliding connection is on the inside wall of connecting bucket 25, carriage release lever 27's lower extreme rotates and connects on the lateral wall of frame 5, when the angle of this submerged motor pump circular inlet opening 12 of needs adjustment, staff's manual rotation adjusting bolt 26, thereby realize that carriage release lever 27 removes in connecting bucket 25, the angle of this submerged motor pump circular inlet opening 12 is adjusted to the in-process that removes at carriage release lever 27.
The connecting barrel 25 is provided with a sliding groove 28 on the inner side wall, the upper end of the moving rod 27 is fixedly connected with a sliding block 29, the sliding block 29 is connected in the sliding groove 28 in a sliding mode, and the moving rod 27 is convenient to move up and down due to the arrangement of the sliding block 29 and the sliding groove 28.
The telescopic rod 24 comprises a fixed rod 30, the bottom end of the fixed rod 30 is fixedly connected to the upper surface of the bottom plate of the shell 21, an accommodating groove 31 is formed in the top end surface of the fixed rod 30 downwards, a movable rod 32 is movably connected in the accommodating groove 31, the upper end of the movable rod 32 is rotatably connected to the outer side wall of the machine base 5, and the accommodating groove 31 is arranged to facilitate the movable rod 32 to move in the accommodating groove 31;
the equal fixedly connected with axis of rotation 33 of tip that movable rod 32 and movable rod 27 are close to frame 5, fixedly connected with U-shaped plate 1 on the lateral wall of frame 5, axis of rotation 33 rotates and connects on the inside wall of U-shaped plate 1, and four at least universal wheels are installed to the bottom lateral wall of frame 5, and the movable rod 32 or movable rod 27 of being convenient for through setting up of axis of rotation 33 and U-shaped plate 1 rotate and connect on the lateral wall of frame 5.
The utility model discloses when using, when the angle of this submerged motor pump circular inlet opening 12 needs to be adjusted, the manual rotation adjusting bolt 26 of staff to realize that carriage release lever 27 removes in connecting bucket 25, adjust the inclination of this submerged motor pump circular inlet opening 12 at the in-process that carriage release lever 27 removed, because frame 5 extrudees movable rod 32, realize movable rod 32 and remove downwards simultaneously, thereby reached the purpose of adjusting circular inlet opening 12 angle.
After the submersible pump is electrified, the rotor core 7 drives the rotating cylinder 8 and the impeller 9 to start rotating under the action of the magnetic field, water flows in the rotating cylinder 8 by the driving of the impeller 9 after being stabilized by the first blades 14 of the circular water inlet holes 12, and then flows out after being stabilized by the second blades 15 of the circular water outlet holes 13.
Meanwhile, the submersible electric pump is protected by the shell 21, the electric wire of the submersible electric pump can conveniently penetrate through the rectangular hole 22 and is connected with an external power supply, the water flowing hole 23 facilitates water of the shell 21 to flow into the shell 21, a filtering effect is achieved, and grass-shaped impurities in the water are prevented from flowing into the shell 21 to cause blockage of the submersible electric pump.
Wherein the rotating cylinder 8 realizes the rotation of the rotating cylinder 8 through the interaction of the rotor core 7 and the stator core 3, and the two ends of the rotating cylinder 8 realize the rotation through the first radial sliding bearing 19 and the second radial sliding bearing 20 respectively, thereby achieving the purpose of water flow.
"fixedly connected" as described in the present invention means that two parts connected to each other are fixed together, typically by welding, screws, etc.; "rotationally coupled" means that two components are coupled together and capable of relative motion.
Although the present description is described in terms of embodiments, not every embodiment includes only a single embodiment, and such description is for clarity only, and those skilled in the art should be able to integrate the description as a whole, and the embodiments can be appropriately combined to form other embodiments as will be understood by those skilled in the art.
Therefore, the above description is only a preferred embodiment of the present application, and is not intended to limit the scope of the present application; all changes which come within the meaning and range of equivalency of the claims are to be embraced within their scope.
Claims (10)
1. A submersible electric pump is characterized by comprising a water inlet block (10), a water outlet block (11), a stator and a rotor (2);
the water inlet block (10) and the water outlet block (11) are respectively provided with a circular water inlet hole (12) and a circular water outlet hole (13);
the stator comprises a stator core (3), a winding group (4) and a base (5), two ends of the base (5) are fixedly connected with a water inlet block (10) and a water outlet block (11) respectively, and an accommodating section (6) is formed in the inner side wall of the base (5); the stator core (3) is fixedly connected to the side wall of the accommodating section (6), and the winding group (4) is wound on the stator core (3);
rotor (2) include rotor core (7), a rotation section of thick bamboo (8) and impeller (9), a rotation section of thick bamboo (8) rotate to be connected and hold interval (6) in, rotor core (7) fixed connection is on the lateral wall of a rotation section of thick bamboo (8), and rotor core (7) and stator core (3) set up relatively, impeller (9) fixed connection is on the inside wall of a rotation section of thick bamboo (8), the both ends of a rotation section of thick bamboo (8) communicate with circular inlet opening (12) and circular apopore (13) respectively.
2. A submersible electric pump according to claim 1, characterized in that the side walls of the circular inlet opening (12) and the circular outlet opening (13) are fixedly connected with a first blade (14) and a second blade (15), respectively.
3. A submersible electric pump according to claim 1, characterized in that one end of the housing (5) is fixedly connected to the end of the intake block (10) by means of a first bolt (16), and the other end of the housing (5) is fixedly connected to the end of the outlet block (11) by means of a second bolt (17).
4. An electric submersible pump according to claim 1, characterized in that the end of the impeller (9) is fixedly connected with an impeller shank (18), the impeller shank (18) being fixedly connected to the inner side wall of the rotary cylinder (8).
5. A submersible electric pump according to claim 1, characterized in that said rotary cylinder (8) is an annular cylinder.
6. A submersible electric pump according to claim 1, characterized in that the outer side wall of one end of the rotary cylinder (8) is rotatably connected in the circular water inlet hole (12) by means of a first radial slide bearing (19), and the outer side wall of the other end of the rotary cylinder (8) is rotatably connected in the circular water outlet hole (13) by means of a second radial slide bearing (20).
7. The submersible electric pump according to claim 1, further comprising a housing (21), wherein a top plate of the housing (21) is provided with a rectangular hole (22), and left and right side walls of the housing (21) are provided with water flowing holes (23).
8. The submersible electric pump according to claim 7, characterized in that the upper surface of the bottom plate of the housing 21 is fixedly connected with the base (5) through a telescopic rod (24), the top end of the housing (21) is fixedly connected with a connecting barrel (25), an adjusting bolt (26) is in threaded connection with the connecting barrel (25), the tail end of the adjusting bolt (26) is rotatably connected with a moving rod (27), the upper end of the moving rod (27) is slidably connected with the inner side wall of the connecting barrel (25), and the lower end of the moving rod (27) is rotatably connected with the outer side wall of the base (5).
9. The submersible electric pump according to claim 8, characterized in that a sliding groove (28) is provided on the inner side wall of the connecting barrel (25), a sliding block (29) is fixedly connected to the upper end of the moving rod (27), and the sliding block (29) is slidably connected in the sliding groove (28).
10. The submersible electric pump according to claim 8, characterized in that the telescopic rod (24) comprises a fixed rod (30), the bottom end of the fixed rod (30) is fixedly connected to the upper surface of the bottom plate of the housing (21), the top end surface of the fixed rod (30) faces downwards to form a receiving groove (31), a movable rod (32) is movably connected in the receiving groove (31), and the upper end of the movable rod (32) is rotatably connected to the outer side wall of the base (5);
the equal fixedly connected with axis of rotation (33) of tip that movable rod (32) and carriage release lever (27) are close to frame (5), fixedly connected with U-shaped plate (1) on the lateral wall of frame (5), axis of rotation (33) rotate to be connected on the inside wall of U-shaped plate (1), four at least universal wheels are installed to the bottom lateral wall of frame (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921786268.7U CN210949179U (en) | 2019-10-23 | 2019-10-23 | Submersible electric pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921786268.7U CN210949179U (en) | 2019-10-23 | 2019-10-23 | Submersible electric pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210949179U true CN210949179U (en) | 2020-07-07 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201921786268.7U Active CN210949179U (en) | 2019-10-23 | 2019-10-23 | Submersible electric pump |
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| CN (1) | CN210949179U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110594165A (en) * | 2019-10-23 | 2019-12-20 | 合肥恒大江海泵业股份有限公司 | Submersible electric pump |
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2019
- 2019-10-23 CN CN201921786268.7U patent/CN210949179U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110594165A (en) * | 2019-10-23 | 2019-12-20 | 合肥恒大江海泵业股份有限公司 | Submersible electric pump |
| CN110594165B (en) * | 2019-10-23 | 2024-07-23 | 合肥恒大江海泵业股份有限公司 | Submersible electric pump |
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