Permanent magnet submersible electric pump with small size and high sealing performance

Abstract

The utility model relates to the technical field of submersible electric pumps, in particular to a small-size high-sealing permanent magnet submersible electric pump which comprises a shell, a transmission seat is arranged in the middle of the top of the shell, a first sealing ring is fixed to the top of the transmission seat, and a second sealing ring is fixed to the bottom of the transmission seat. A plurality of support plates which are distributed at equal intervals are fixed at the top of the shell; the cover body is fixed with the plurality of support plates; the rotating shaft is rotationally arranged at the top of the transmission seat, an impeller is fixed to the top of the rotating shaft and located in the cover body, and the rotating shaft abuts against the first sealing ring; the shaft body is rotatably arranged at the bottom of the transmission seat, and a plurality of blades are fixed on the side wall of the shaft body. The high sealing state between the transmission seat and the shaft body can be realized under the action of the first sealing ring and the second sealing ring, so that even if water passes through the first sealing ring and enters the transmission seat, the water cannot flow into the transmission seat; and the second sealing ring provides sufficient sealing for the shell, so that the sealing performance is improved.

Description

Technical Field

[0001] This utility model relates to the field of submersible pump technology, specifically a small-volume, highly sealed permanent magnet submersible pump. Background Technology

[0002] A submersible pump is a water pumping device that combines an electric motor and a water pump directly, and operates entirely submerged in water. It is widely used in agricultural irrigation, urban drainage, and industrial water intake.

[0003] In the existing technology, most small-volume submersible electric pumps have poor heat dissipation capacity due to size limitations. At the same time, due to size limitations, small-volume permanent magnet submersible electric pumps also have poor sealing performance, which can easily lead to water entering the motor compartment and thus damage the motor. Utility Model Content

[0004] The purpose of this invention is to provide a small-volume, highly sealed permanent magnet submersible pump to solve the problems mentioned in the background art.

[0005] The technical solution of this utility model is: a small-volume, highly sealed permanent magnet submersible electric pump, comprising:

[0006] The housing has a transmission seat at the top center, a first sealing ring is fixed to the top of the transmission seat, a second sealing ring is fixed to the bottom of the transmission seat, and multiple equally spaced support plates are fixed to the top of the housing.

[0007] The cover body is fixed to multiple support plates;

[0008] A rotating shaft is rotatably mounted on the top of the transmission seat. An impeller is fixed on the top of the rotating shaft and is located inside the cover. The rotating shaft abuts against the first sealing ring.

[0009] A shaft body is rotatably mounted at the bottom of the transmission seat, and multiple blades are fixed on the side wall of the shaft body. The shaft body and the second sealing ring abut against each other.

[0010] A transmission assembly is disposed within a transmission base and is fixed to the rotating shaft and the shaft body;

[0011] A power assembly, which is fixed inside the housing.

[0012] Preferably, the power assembly includes:

[0013] The motor is fixed inside the housing, and the output shaft and shaft body of the motor are fixed.

[0014] Multiple fins, all of which are fixed to the side wall of the motor.

[0015] Preferably, the transmission assembly includes:

[0016] A partition, the partition being fixed inside the transmission seat;

[0017] Two drive discs are respectively rotatably mounted on the top and bottom of the partition, one of which is fixed to the rotating shaft and the other is fixed to the shaft body;

[0018] Two magnetic coupling components are respectively fixed to two transmission disks.

[0019] Preferably, the magnetic coupling assembly includes:

[0020] Multiple electromagnets, all of which are fixed to the transmission disc;

[0021] Multiple connecting blocks are fixed to the transmission disk. Each connecting block corresponds to a multiple electromagnet. Each connecting block has two carbon brushes fixed on it. One carbon brush is electrically connected to the positive electrode of the electromagnet, and the other carbon brush is electrically connected to the negative electrode of the electromagnet.

[0022] Preferred options also include:

[0023] Multiple fixing blocks, each of which is fixed to the partition plate;

[0024] Two metal rings, each of which is fixed to a plurality of fixing blocks.

[0025] Preferably, the two carbon brushes on each connecting block abut against two metal rings respectively.

[0026] Preferably, the top of the partition has multiple through holes.

[0027] Preferred options also include:

[0028] Multiple tubes are provided, each of which is disposed through a partition, and the bottom end of each tube penetrates the inner wall of the shell.

[0029] Multiple connecting pipes, one end of each of the multiple connecting pipes is located inside the transmission seat, and the other end of each of the multiple connecting pipes is located at the bottom of the housing.

[0030] Preferably, a junction box is fixed to the side wall of the housing.

[0031] This utility model provides a small-volume, highly sealed permanent magnet submersible electric pump with the following improvements and advantages compared to the prior art:

[0032] This utility model, through the arrangement of a first sealing ring, a transmission seat, a second sealing ring, a rotating shaft, and a shaft body, can achieve a high degree of sealing between the shaft body and the first sealing ring during operation. Even if water passes through the first sealing ring and enters the transmission seat, the second sealing ring provides sufficient sealing for the housing, thereby improving the sealing performance. Attached Figure Description

[0033] The present invention will be further explained below with reference to the accompanying drawings and embodiments:

[0034] Figure 1 This is a three-dimensional structural schematic diagram of the present invention;

[0035] Figure 2 This is a schematic diagram of the transmission seat and rotating shaft structure of this utility model;

[0036] Figure 3 This is a schematic cross-sectional view of the shell structure of this utility model;

[0037] Figure 4 This is the utility model Figure 3 A magnified view of the structure at point A in the middle;

[0038] Figure 5 This is a schematic diagram of the shaft and blade structure of this utility model.

[0039] Explanation of reference numerals in the attached figures:

[0040] 1. Housing; 2. Junction box; 3. Support plate; 4. Cover; 5. Impeller; 6. Transmission base; 7. Shaft; 8. Motor; 9. Fin; 10. Connecting pipe; 11. First sealing ring; 12. Partition plate; 13. Transmission disc; 14. Shaft; 15. Blade; 16. Second sealing ring; 17. Pipe; 18. Fixing block; 19. Electromagnet; 20. Connecting block; 21. Carbon brush; 22. Metal ring. Detailed Implementation

[0041] The present invention will now be described in detail, and the technical solutions in the embodiments of the present invention will be clearly and completely described. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present invention.

[0042] This utility model provides a small-volume, highly sealed permanent magnet submersible pump through improvements. The technical solution of this utility model is as follows:

[0043] like Figures 1-5 As shown, a small-volume, highly sealed permanent magnet submersible pump includes:

[0044] The housing 1 has a transmission seat 6 at the top center, a first sealing ring 11 is fixed to the top of the transmission seat 6, a second sealing ring 16 is fixed to the bottom of the transmission seat 6, and multiple equally spaced support plates 3 are fixed to the top of the housing 1.

[0045] Cover 4, and cover 4 and multiple support plates 3 are fixed;

[0046] The rotating shaft 7 is rotatably mounted on the top of the transmission seat 6. An impeller 5 is fixed on the top of the rotating shaft 7 and is located inside the cover 4. The rotating shaft 7 and the first sealing ring 11 are in contact.

[0047] Shaft 14 is rotatably mounted at the bottom of transmission seat 6. Multiple blades 15 are fixed on the side wall of shaft 14. Shaft 14 and second sealing ring 16 abut against each other.

[0048] The transmission assembly is housed within the transmission base 6 and is fixed to the rotating shaft 7 and the shaft body 14.

[0049] The power assembly is fixed inside the housing 1.

[0050] Through the action of the first sealing ring 11 and the second sealing ring 16, the housing 1 and the shaft 14 are in a highly sealed state. Even if water passes through the first sealing ring 11 and enters the transmission seat 6, the second sealing ring 16 provides sufficient sealing for the housing 1 to improve the sealing performance.

[0051] Furthermore, the powertrain components include:

[0052] Motor 8 is fixed inside housing 1, and the output shaft and shaft body 14 of motor 8 are fixed.

[0053] Multiple fins 9 are fixed to the side wall of the motor 8.

[0054] Multiple fins 9 can accelerate the heat transfer in the motor 8.

[0055] Furthermore, the transmission components include:

[0056] Partition 12 is fixed inside the transmission seat 6;

[0057] Two drive discs 13 are respectively rotatably mounted on the top and bottom of the partition 12. One drive disc 13 is fixed to the rotating shaft 7, and the other drive disc 13 is fixed to the shaft 14.

[0058] Two magnetic coupling components are fixed to two transmission disks 13 respectively.

[0059] Furthermore, the magnetic coupling component includes:

[0060] Multiple electromagnets 19 are fixed to the transmission disc 13.

[0061] Multiple connecting blocks 20 are fixed to the transmission disk 13. Each connecting block 20 corresponds to a multiple electromagnet 19. Each connecting block 20 has two carbon brushes 21 fixed on it. One carbon brush 21 is electrically connected to the positive electrode of the electromagnet 19, and the other carbon brush 21 is electrically connected to the negative electrode of the electromagnet 19.

[0062] Furthermore, it also includes:

[0063] Multiple fixing blocks 18 are fixed to the partition plate 12;

[0064] Two metal rings 22 are fixed to multiple fixing blocks 18.

[0065] During the rotation of the transmission disk 13, the electromagnet 19 is always energized through the carbon brush 21 on the connecting block 20, thereby ensuring that the electromagnet 19 is always in working condition during the rotation of the transmission disk 13.

[0066] When the switches of multiple electromagnets 19 on the two transmission discs 13 are turned on, magnetic force is generated between the electromagnets 19 on the two transmission discs 13. As the transmission disc 13 on the shaft 14 rotates, it drives the other transmission disc 13 to rotate, so as to drive the impeller 5 to rotate through the rotating shaft 7.

[0067] Furthermore, the two carbon brushes 21 on each connecting block 20 respectively abut against the two metal rings 22.

[0068] Furthermore, the top of the partition 12 has multiple through holes.

[0069] Furthermore, it also includes:

[0070] Multiple tubes 17 are provided through the partition plate 12, and the bottom end of each tube 17 penetrates the inner wall of the shell 1.

[0071] Multiple connecting pipes 10, one end of each connecting pipe 10 is inside the transmission seat 6, and the other end of each connecting pipe 10 is at the bottom of the housing 1.

[0072] During the rotation of the shaft 14, it drives each blade 15 to rotate, so that the heat transfer oil in the housing 1 enters the upper part of the partition 12 through the pipe 17, then enters the lower part of the partition 12 through the through hole on the partition 12, and finally enters the bottom of the housing 1 through each connecting pipe 10, so as to realize the circulation of heat transfer oil. Combined with the function of the fins 9, it realizes the efficient heat dissipation of the motor 8.

[0073] Furthermore, a junction box 2 is fixed to the side wall of the housing 1.

[0074] Specifically, the working principle is as follows: When in use, the switch of motor 8 is turned on. When motor 8 is working, it drives shaft 14 to rotate. During the rotation of shaft 14, it drives the corresponding transmission disk 13 to rotate.

[0075] When the switches of multiple electromagnets 19 on the two transmission discs 13 are turned on, magnetic force is generated between the electromagnets 19 on the two transmission discs 13. As the transmission disc 13 on the shaft 14 rotates, it drives the other transmission disc 13 to rotate, so as to drive the impeller 5 to rotate through the rotating shaft 7.

[0076] During the rotation of impeller 5, water enters the lower part of cover 4 through the gap between each support plate 3, and then the water is output from the top of impeller 5 by the action of impeller 5.

[0077] During the rotation of the shaft 14, it drives each blade 15 to rotate, so that the heat transfer oil in the housing 1 enters the upper part of the partition 12 through the pipe 17, then enters the lower part of the partition 12 through the through hole on the partition 12, and finally enters the bottom of the housing 1 through each connecting pipe 10, so as to realize the circulation of heat transfer oil. Combined with the function of the fins 9, it realizes the efficient heat dissipation of the motor 8.

Claims

1. A small-volume, high-sealing permanent magnet submersible pump, characterized in that, include: The housing (1) has a transmission seat (6) at the top center, a first sealing ring (11) is fixed on the top of the transmission seat (6), a second sealing ring (16) is fixed on the bottom of the transmission seat (6), and multiple equally spaced support plates (3) are fixed on the top of the housing (1). The cover (4) and multiple support plates (3) are fixed together; A rotating shaft (7) is rotatably mounted on the top of a transmission seat (6). An impeller (5) is fixed on the top of the rotating shaft (7), and the impeller (5) is located inside the cover (4). The rotating shaft (7) and the first sealing ring (11) are in contact. Shaft (14), the shaft (14) is rotatably disposed at the bottom of the transmission seat (6), and multiple blades (15) are fixed on the side wall of the shaft (14). The shaft (14) and the second sealing ring (16) abut against each other. The transmission assembly is disposed in the transmission seat (6) and is fixed to the rotating shaft (7) and the shaft body (14); The power assembly is fixed inside the housing (1).

2. The small-volume, high-sealing permanent magnet submersible pump according to claim 1, characterized in that, The power assembly includes: Motor (8), the motor (8) is fixed inside the housing (1), and the output shaft and shaft body (14) of the motor (8) are fixed; Multiple fins (9) are fixed to the side wall of the motor (8).

3. The small-volume, high-sealing permanent magnet submersible pump according to claim 1, characterized in that, The transmission assembly includes: Partition plate (12), said partition plate (12) is fixed inside transmission seat (6); Two drive discs (13) are respectively rotatably disposed on the top and bottom of the partition (12), one of the drive discs (13) is fixed to the rotating shaft (7), and the other drive disc (13) is fixed to the shaft (14); Two magnetic coupling components are fixed to two transmission disks (13), respectively.

4. A small-volume, high-sealing permanent magnet submersible pump according to claim 3, characterized in that, The magnetic coupling component includes: Multiple electromagnets (19) are fixed to the transmission disk (13); Multiple connecting blocks (20) are fixed to the transmission disk (13). Each of the multiple connecting blocks (20) corresponds to a multiple electromagnets (19). Each connecting block (20) has two carbon brushes (21) fixed on it. One of the carbon brushes (21) is electrically connected to the positive electrode of the electromagnet (19), and the other carbon brush (21) is electrically connected to the negative electrode of the electromagnet (19).

5. A small-volume, high-sealing permanent magnet submersible pump according to claim 4, characterized in that, Also includes: Multiple fixing blocks (18), all of which are fixed to the partition plate (12); Two metal rings (22) are fixed to a plurality of fixing blocks (18).

6. A small-volume, high-sealing permanent magnet submersible pump according to claim 5, characterized in that, The two carbon brushes (21) on each connecting block (20) abut against the two metal rings (22) respectively.

7. A small-volume, high-sealing permanent magnet submersible pump according to claim 3, characterized in that, The top of the partition (12) has multiple through holes.

8. A small-volume, high-sealing permanent magnet submersible pump according to claim 3, characterized in that, Also includes: Multiple tubes (17) are provided through the partition (12), and the bottom end of each tube (17) penetrates the inner wall of the shell (1); Multiple connecting pipes (10), one end of each of the multiple connecting pipes (10) is inside the transmission seat (6), and the other end of each of the multiple connecting pipes (10) is at the bottom of the housing (1).

9. A small-volume, high-sealing permanent magnet submersible pump according to claim 1, characterized in that, A junction box (2) is fixed to the side wall of the housing (1).

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