Permanent magnet wet-type submersible motor

Abstract

The utility model provides a permanent magnet wet-type submersible motor, which comprises a sealing box body, a submersible motor body and a heat dissipation assembly, and is characterized in that the submersible motor body is arranged in the sealing box body; the heat dissipation assembly comprises a circulating heat exchange pipe; the inner wall of the sealing box body is fixedly connected with a supporting pipe frame; the inner side of the supporting pipe frame is clamped with the surface of the circulating heat exchange pipe; a breathable net disc is fixedly connected to the inner wall of the sealing box body and located on one side of the submersible motor body; one side of the sealing box body is fixedly connected with a motor cavity; the interior of the motor cavity is fixedly connected with a built-in motor; by arranging the heat dissipation assembly, air circulation in the sealing box body can be accelerated, internal hot air can make contact with the circulating heat exchange pipe more quickly, heat exchange is conducted quickly, heat in the sealing box body is reduced, and the problems that when the temperature is high, the service life of the motor is affected, and meanwhile the motor cannot work normally inevitably are solved; and the working efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of submersible motors, in particular to a permanent magnet wet submersible motor. Background Art

[0002] Submersible motors are motors specially developed for underwater use. They are directly connected to pumps and operate in water. They are a type of motor designed specifically for underwater work and have a variety of types, a wide range of applications, and superior performance characteristics.

[0003] A Chinese patent, publication number CN212656997U, discloses a wet-type permanent magnet motor submersible pump, comprising a water pump body and a motor. The pump comprises an impeller, a guide vane, a check valve, a guide bearing, and a pump shaft, while the motor comprises a shaft seal, an upper guide bearing, a rotor, a stator, a lower guide bearing, a thrust plate, a thrust bearing, a base, an adjustment capsule, and a gland. In this utility model, the motor is located below the water pump body, and the pump outlet is directly connected to the water pipe. This pump features a short shaft system, stable and reliable operation, and minimal mechanical losses. The motor is a permanent magnet motor made of neodymium iron boron permanent magnet material, resulting in a high power density and a small size and light weight. Graphite radial sliding bearings and fan-shaped block thrust sliding bearings are used, resulting in a long service life and strong load-bearing capacity. The thrust bearing seat is equipped with a spherical support and self-leveling function. A pressure-regulating capsule is provided at the motor base to balance internal and external pressures at different flooding depths, ensuring a reliable seal at the motor shaft extension.

[0004] As mentioned above, the patent provides a wet permanent magnet motor submersible pump, which has a self-leveling function and can balance the internal and external pressures at different flooding depths to ensure reliable sealing at the motor shaft extension. However, for submersible motors, since it is necessary to prevent water from entering the interior, a completely closed environment needs to be designed. However, in a closed environment, the motor will generate a certain amount of heat when it is working, and with continuous use, the temperature will continue to rise. When the temperature is high, it will affect the service life of the motor, and it will inevitably make the motor unable to work normally. The working efficiency needs to be improved. Utility Model Content

[0005] The utility model provides a permanent magnet wet submersible motor to solve the problems raised in the background technology.

[0006] In order to solve the above problems, the present invention provides a permanent magnet wet submersible motor, including a sealed box, a submersible motor body and a heat dissipation component, wherein the submersible motor body is arranged inside the sealed box; the heat dissipation component includes a circulating heat exchange pipe; the inner wall of the sealed box is fixedly connected to a support pipe rack; the inner side of the support pipe rack is clamped with the surface of the circulating heat exchange pipe; the inner wall of the sealed box and one side of the submersible motor body are fixedly connected to a breathable mesh disk; one side of the sealed box is fixedly connected to a motor cavity; the inside of the motor cavity is fixedly connected to a built-in motor; the output shaft of the built-in motor is fixedly connected to a transmission shaft through a coupling; one end of the transmission shaft is fixedly connected to a fan impeller.

[0007] Preferably: the surface of the sealed box body is fixedly connected to a support base; the top of the support base is fixedly connected to a water inlet tank; both ends of the circulating heat exchange pipe pass through the sealed box body and the water inlet tank and extend to the interior of the water inlet tank; the end of the circulating heat exchange pipe located in the water inlet tank is connected to a water pump; the top of the water pump is connected to a drain pipe.

[0008] Preferably: the bottom of the submersible motor body is fixedly connected to a motor support seat; one side of the submersible motor body is fixedly connected to a positioning chuck; the bottom of the inner wall of the sealed box is fixedly connected to a clamping base adapted to the motor support seat; the top of the clamping base and one side of the inner wall of the sealed box are fixedly connected to a limiting clamping rod.

[0009] Preferably, the output shaft of the submersible motor body is provided with a transmission slot; the output shaft sleeve of the submersible motor body is provided with a transmission coupling; the inner wall of the coupling is fixedly connected with a transmission flat key adapted to the transmission slot.

[0010] Preferably: the output shaft of the transmission shaft passes through the sealed box and extends between one side of the inner wall of the sealed box and one side of the breathable mesh disk; one end of the transmission shaft located between one side of the inner wall of the sealed box and one side of the breathable mesh disk is fixedly connected to the surface of the fan impeller.

[0011] The beneficial effects of adopting the above technical solution are:

[0012] By setting up a heat dissipation component, when working, the circulating heat exchange tube is sleeved on the surface of the submersible motor body to connect with the water at the bottom of the water and exchange the heat generated by the working of the submersible motor body. In order to improve the efficiency of heat exchange, a built-in motor is fixed inside the motor cavity. When the built-in motor is working, the output shaft drives the transmission shaft to start rotating. After the transmission shaft rotates, the fan impeller starts rotating, thereby accelerating the air circulation inside the sealed box, so that the internal hot air can contact the circulating heat exchange tube more quickly, thereby quickly exchanging heat and reducing the heat inside the sealed box, avoiding the problem that high temperature will affect the service life of the motor, and at the same time, it will inevitably cause the motor to malfunction, thereby improving work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model.

[0014] Figure 2 It is a schematic diagram of the cross-sectional structure of the sealed box in the present invention.

[0015] Figure 3 It is a cross-sectional view of the internal structure of the sealed box in the present utility model.

[0016] Figure 4 This is an exploded view of part of the structure of the present invention.

[0017] Among them: 1. Sealed box; 2. Submersible motor body; 3. Circulating heat exchange tube; 4. Support pipe rack; 5. Breathable mesh disk; 6. Motor cavity; 7. Built-in motor; 8. Drive shaft; 9. Fan impeller; 10. Support bracket; 11. Water inlet tank; 12. Water pump; 13. Drain pipe; 14. Motor support base; 15. Positioning chuck; 16. Clamping base; 17. Limiting rod; 18. Drive slot; 19. Drive coupling; 20. Drive key. DETAILED DESCRIPTION

[0018] The embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0019] In the description of this utility model, unless otherwise specified, "plurality" means two or more; the terms "upper," "lower," "left," "right," "inner," "outer," "front end," "rear end," "head," "tail," etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings and are intended solely to facilitate the description of this utility model and simplify the description. They do not indicate or imply that the devices or components referred to must have a specific direction, be constructed, or operate in a specific direction, and therefore should not be construed as limiting this utility model. Furthermore, the terms "first," "second," "third," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0020] In the description of this utility model, it should be noted that, unless otherwise specified or limited, the terms "connected" and "connection" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, movable connections, or integral connections; they can refer to mechanical connections or electrical connections; and they can refer to direct connections or indirect connections through an intermediary. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on the specific circumstances.

[0021] like Figure 1 - Figure 4As shown, in this embodiment, a permanent magnet wet submersible motor includes a sealed box 1, a submersible motor body 2 and a heat dissipation component, wherein the submersible motor body 2 is arranged inside the sealed box 1; the heat dissipation component includes a circulating heat exchange pipe 3; the inner wall of the sealed box 1 is fixedly connected to a support pipe rack 4; the inner side of the support pipe rack 4 is clamped with the surface of the circulating heat exchange pipe 3; the inner wall of the sealed box 1 and one side of the submersible motor body 2 is fixedly connected to a breathable mesh plate 5; one side of the sealed box 1 is fixedly connected to a motor cavity 6; the inside of the motor cavity 6 is fixedly connected to a built-in motor 7; the output shaft of the built-in motor 7 is fixedly connected to a transmission shaft 8 through a coupling; one end of the transmission shaft 8 is fixedly connected to a fan impeller 9.

[0022] Through the above technical solution, the submersible motor body 2 is arranged inside the sealed box 1, which can isolate the external water. The support pipe rack 4 is fixed on the inner wall of the sealed box 1 to support the circulating heat exchange pipe 3. The breathable mesh plate 5 is fixed on the inner wall of the sealed box 1 for air circulation. The motor cavity 6 is arranged on one side of the sealed box 1 for supporting and installing the built-in motor 7. When working, the circulating heat exchange pipe 3 is sleeved on the surface of the submersible motor body 2 to communicate with the water at the bottom of the water and exchange heat from the working of the submersible motor body 2. In order to improve the efficiency of heat exchange, the built-in motor 7 is fixed inside the motor cavity 6. When the built-in motor 7 is working, the output shaft drives the transmission shaft 8 to start rotating. After the transmission shaft 8 rotates, the fan impeller 9 starts to rotate, thereby accelerating the air circulation inside the sealed box 1, so that the internal hot air can contact the circulating heat exchange pipe 3 more quickly, thereby quickly exchanging heat and reducing the heat inside the sealed box 1. This avoids the problem that the motor service life is affected by high temperature, which will inevitably cause the motor to malfunction, thereby improving the working efficiency.

[0023] like Figure 2 - Figure 4 As shown, the surface of the sealed box body 1 is fixedly connected to a support base 10; the top of the support base 10 is fixedly connected to a water inlet tank 11; both ends of the circulating heat exchange pipe 3 pass through the sealed box body 1 and the water inlet tank 11 and extend to the interior of the water inlet tank 11; the end of the circulating heat exchange pipe 3 located in the water inlet tank 11 is connected to a water pump 12; the top of the water pump 12 is connected to a drain pipe 13; the bottom of the submersible motor body 2 is fixedly connected to a motor support base 14; one side of the submersible motor body 2 is fixedly connected to a positioning chuck 15; the bottom of the inner wall of the sealed box body 1 is fixedly connected to a clamping base 16 adapted to the motor support base 14; the top of the clamping base 16 and one side of the inner wall of the sealed box body 1 are fixedly connected to a limiting clamping rod 17.

[0024] Through the above technical solution, the support base 10 is fixed on the surface of the sealed box body 1 to support the sealed box body 1 and also support the water inlet tank 11. One end of the circulating heat exchange pipe 3 passes through the top of the water inlet tank 11 and is connected to the water pump 12 at this end. When the water pump 12 is working, the water inside the circulating heat exchange pipe 3 can be pumped out and then discharged through the drain pipe 13, thereby ensuring that the water inside the circulating heat exchange pipe 3 is always at a lower temperature and can exchange heat faster. The top of the motor support base 14 fixedly supports the submersible motor body 2, and the positioning chuck 15 is fixed on the submersible motor body 2. Then, the clamping ground base is fixed at the bottom of the inner wall of the sealed box body 1 to clamp the motor support base 14, thereby fixing the submersible motor body 2. The clamping ground base and one side of the inner wall of the sealed box body 1 are fixed with a limit rod 17, and the limit rod 17 passes through the clamping base 16 and the positioning chuck 15, thereby limiting the submersible motor body 2.

[0025] like Figure 2 and Figure 4 As shown, the output shaft of the submersible motor body 2 is provided with a transmission slot 18; the output shaft sleeve of the submersible motor body 2 is provided with a transmission coupling 19; the inner wall of the coupling is fixedly connected with a transmission flat key 20 adapted to the transmission slot 18; the output shaft of the transmission shaft 8 passes through the sealing box body 1 and extends between one side of the inner wall of the sealing box body 1 and one side of the breathable mesh plate 5; one end of the transmission shaft 8 located between one side of the inner wall of the sealing box body 1 and one side of the breathable mesh plate 5 is fixedly connected to the surface of the fan impeller 9.

[0026] Through the above technical solution, a transmission slot 18 is provided on the output shaft of the submersible motor body 2, and a transmission coupling 19 is sleeved on the output shaft of the submersible motor body 2. A transmission flat key 20 is fixed on the inner wall of the transmission coupling 19. The transmission flat key 20 cooperates with the transmission slot 18 so that the output shaft of the submersible motor body 2 can drive the transmission coupling 19 to start rotating. The transmission coupling 19 is used to connect other external transmission equipment. The breathable mesh plate 5 is fixed on the inner wall of the sealed box body 1, and the fan impeller 9 is arranged between one side of the breathable mesh plate 5 and one side of the inner wall of the sealed box body 1, so that the fan impeller 9 starts to fan after rotating, and then blows into the surface of the submersible motor body 2 through the breathable mesh plate 5, thereby accelerating internal heat dissipation.

[0027] Finally, it should be noted that the above implementation cases are only used to illustrate the present invention, rather than to limit the technical solutions described in the present invention; therefore, although this specification has described the present invention in detail with reference to the above embodiments, ordinary technicians in this field should understand that the present invention can still be modified or replaced by equivalents, and all technical solutions and improvements that do not depart from the spirit and scope of the present invention should be included in the scope of the claims of the present invention; technologies not described in detail in the present invention are implemented with existing technologies.

Claims

1. A permanent magnet wet submersible motor, comprising a sealed housing (1), a submersible motor body (2) and a heat dissipation assembly, characterized in that: The submersible motor body (2) is arranged inside a sealed box (1); the heat dissipation assembly includes a circulating heat exchange tube (3); the inner wall of the sealed box (1) is fixedly connected to a support pipe rack (4); the inner side of the support pipe rack (4) is snap-fitted to the surface of the circulating heat exchange tube (3); the inner wall of the sealed box (1) and located on one side of the submersible motor body (2) are fixedly connected to a breathable mesh disk (5); one side of the sealed box (1) is fixedly connected to a motor cavity (6); the interior of the motor cavity (6) is fixedly connected to a built-in motor (7); the output shaft of the built-in motor (7) is fixedly connected to a transmission shaft (8) via a coupling; one end of the transmission shaft (8) is fixedly connected to a fan impeller (9).

2. A permanent magnet wet submersible motor according to claim 1, characterized in that: The surface of the sealed box (1) is fixedly connected to a support base (10); the top of the support base (10) is fixedly connected to a water inlet tank (11); both ends of the circulating heat exchange pipe (3) pass through the sealed box (1) and the water inlet tank (11) and extend into the interior of the water inlet tank (11); one end of the circulating heat exchange pipe (3) located in the water inlet tank (11) is connected to a water pump (12); the top of the water pump (12) is connected to a drain pipe (13).

3. A permanent magnet wet submersible motor according to claim 1, characterized in that: The bottom of the submersible motor body (2) is fixedly connected to a motor support seat (14); one side of the submersible motor body (2) is fixedly connected to a positioning chuck (15); the bottom of the inner wall of the sealed box (1) is fixedly connected to a clamping base (16) adapted to the motor support seat (14); the top of the clamping base (16) and one side of the inner wall of the sealed box (1) are fixedly connected to a limiting clamping rod (17).

4. A permanent magnet wet submersible motor according to claim 1, characterized in that: The output shaft of the submersible motor body (2) is provided with a transmission slot (18); the output shaft sleeve of the submersible motor body (2) is provided with a transmission coupling (19); and the inner wall of the coupling is fixedly connected with a transmission flat key (20) adapted to the transmission slot (18).

5. The permanent magnet wet submersible motor according to claim 1, characterized in that: The output shaft of the transmission shaft (8) passes through the sealed box (1) and extends between one side of the inner wall of the sealed box (1) and one side of the air-permeable mesh disk (5); one end of the transmission shaft (8) located between one side of the inner wall of the sealed box (1) and one side of the air-permeable mesh disk (5) is fixedly connected to the surface of the fan impeller (9).

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