Corrosion-resistant DC motor

Abstract

This utility model relates to the field of motor technology and provides a corrosion-resistant DC motor, including a motor body, an anti-corrosion shell, and a circulating cooling assembly inside the anti-corrosion shell. The circulating cooling assembly has at least one cooling fin, an inlet pipe, and an outlet pipe, both of which penetrate the anti-corrosion shell and extend to the outside. The motor body has a motor output shaft and a junction box. A sealed bearing is provided between the motor output shaft and the anti-corrosion shell. A terminal block is provided on the anti-corrosion shell near the junction box. This utility model features an anti-corrosion shell that isolates the motor body from the external environment, preventing direct contact and corrosion. The circulating cooling assembly inside the anti-corrosion shell carries away the heat generated by the motor body, preventing a temperature difference between the inside and outside of the anti-corrosion shell and keeping the inner wall of the anti-corrosion shell dry, thus preventing the motor body from getting damp.

Description

Technical Field

[0001] This utility model relates to the field of motor technology, specifically to a corrosion-resistant DC motor. Background Technology

[0002] A DC motor is a rotating electric machine that converts direct current electrical energy into mechanical energy. Due to its excellent speed regulation performance and large starting torque, it is widely used in industrial production, transportation, aerospace, and other fields. However, in special fields such as chemical, marine, and metallurgical industries, the environment often contains large amounts of corrosive gases or liquids, and the humidity is high. When ordinary DC motors operate in such harsh environments, their casings, end covers, junction boxes, and internal stator and rotor components are easily corroded. Current anti-corrosion measures for DC motors typically involve only spraying a simple anti-corrosion paint onto the casing surface. However, this single method is insufficient to withstand long-term erosion by highly corrosive media. Ordinary anti-corrosion paint is prone to peeling and aging in humid environments with corrosive gases, leading to the exposure and corrosion of the casing substrate. This corrosion affects critical components such as the motor's stator windings and commutator, resulting in decreased insulation performance, winding short circuits, and poor commutation. Consequently, the motor's lifespan is severely shortened, its operational reliability is reduced, and it can even cause safety accidents. Utility Model Content

[0003] This invention proposes a corrosion-resistant DC motor with high operational reliability, good corrosion resistance, and the ability to operate stably for a long time in harsh and corrosive environments.

[0004] A corrosion-resistant DC motor includes a motor body, an anti-corrosion shell is provided on the outside of the motor body, a circulating cooling assembly is provided inside the anti-corrosion shell, the circulating cooling assembly is located between the inner wall of the anti-corrosion shell and the motor body, the circulating cooling assembly is provided with at least one cooling fin, the circulating cooling assembly is provided with an inlet pipe and an outlet pipe, both of which penetrate the anti-corrosion shell and extend to the outside; The motor body is provided with a motor output shaft and a junction box. A sealed bearing is provided between the motor output shaft and the anti-corrosion housing. A terminal block is provided on the anti-corrosion housing near the junction box.

[0005] With the above structure, a corrosion-resistant outer shell is installed to isolate the corrosion-resistant outer shell from the external environment, preventing the motor body from being directly exposed to the external environment and corroded. A circulating cooling component is installed inside the corrosion-resistant outer shell to remove the heat generated by the motor body inside the corrosion-resistant outer shell, preventing a temperature difference between the inside and outside of the corrosion-resistant outer shell, keeping the inner wall of the corrosion-resistant outer shell dry, and preventing the motor body from getting damp.

[0006] To better remove the heat generated by the motor body inside the corrosion-resistant casing, the circulating cooling assembly includes a first cooling plate, a second cooling plate, and a third cooling plate. Each of the first, second, and third cooling plates is equipped with a cooling pipe. One end of each cooling pipe has a liquid inlet, and the other end has a liquid outlet. The liquid outlet of the first cooling plate is connected to the liquid inlet of the second cooling plate, and the liquid outlet of the second cooling plate is connected to the liquid inlet of the third cooling plate. The liquid inlet of the first cooling plate is connected to the liquid inlet pipe, and the liquid outlet of the third cooling plate is connected to the liquid outlet pipe. In order to achieve better heat dissipation of the circulating cooling assembly, the first, second and third cooling plates are all equipped with heat dissipation fins, and the cooling pipe passes through the heat dissipation fins and is wound in an "S" shape inside the heat dissipation fins.

[0007] To achieve better corrosion protection, the anti-corrosion shell includes an inner metal shell, a middle anti-corrosion coating, and an outer protective shell. The middle anti-corrosion coating is applied to the outer surface of the inner metal shell, and the outer protective shell wraps around the outside of the middle anti-corrosion coating. The inner metal shell is made of stainless steel, the middle anti-corrosion coating is made of polytetrafluoroethylene (PTFE), and the outer protective shell is made of fiberglass.

[0008] In order to better dissipate the heat generated by the motor body inside the anti-corrosion housing, the anti-corrosion housing is provided with a mounting hole at the end away from the motor output shaft, and a cooling fan is installed in the mounting hole.

[0009] Preferably, the inner and outer surfaces of the junction box are coated with an anti-corrosion coating, and the junction box is provided with wiring terminals.

[0010] After adopting the above technical solution, the beneficial effects of this utility model are: The corrosion-resistant DC motor provided by this utility model is equipped with a corrosion-resistant outer shell and a circulating cooling assembly. The corrosion-resistant outer shell is used to isolate the corrosion-resistant outer shell from the external environment, so as to prevent the motor body from being directly exposed to the external environment and thus corroded. The circulating cooling assembly is installed inside the corrosion-resistant outer shell to remove the heat generated by the motor body inside the corrosion-resistant outer shell, so as to prevent the temperature difference between the inside and outside of the corrosion-resistant outer shell, keep the inner wall of the corrosion-resistant outer shell dry, and prevent the motor body from being damp and corroded. Attached Figure Description

[0011] Figure 1 This is a three-dimensional structural schematic diagram of the present invention; Figure 2 This is a schematic diagram of the internal structure of the anti-corrosion outer shell; Figure 3 This is a structural diagram of the interior of the anti-corrosion outer shell from another angle; Figure 4 This is a structural diagram of the motor body and the circulating cooling assembly; Figure 5 This is a schematic diagram of the circulating cooling component.

[0012] Wherein: 1-motor body; 11-motor output shaft; 12-junction box; 2-corrosion-resistant housing; 3-circulating cooling assembly; 31-first cooling plate; 32-second cooling plate; 33-third cooling plate; 4-cooling fan; 5-liquid inlet pipe; 6-liquid outlet pipe; 7-terminal. Detailed Implementation

[0013] The present invention will be further described below with reference to the accompanying drawings.

[0014] The orientations mentioned in this specification are based on the orientation of this utility model during normal operation, and do not limit its orientation during storage and transportation. They only represent relative positional relationships and do not represent absolute positional relationships.

[0015] like Figure 1-5 As shown, the corrosion-resistant DC motor includes a motor body 1, an anti-corrosion shell 2 on the outside of the motor body 1, a circulating cooling assembly 3 inside the anti-corrosion shell 2, the circulating cooling assembly 3 being located between the inner wall of the anti-corrosion shell 2 and the motor body 1, the circulating cooling assembly 3 having at least one cooling fin, an inlet pipe 5 and an outlet pipe 6, both of which penetrate the anti-corrosion shell 2 and extend to the outside; the motor body 1 having a motor output shaft 11 and a junction box 12, a sealed bearing between the motor output shaft 11 and the anti-corrosion shell 2, and a terminal block 7 on the anti-corrosion shell 2 near the junction box 12.

[0016] This utility model is provided with a corrosion-resistant outer shell 2, which isolates the corrosion-resistant outer shell 2 from the external environment and prevents the motor body 1 from being directly exposed to the external environment and corroded. A circulating cooling component 3 is provided inside the corrosion-resistant outer shell 2 to carry away the heat generated by the motor body 1 inside the corrosion-resistant outer shell 2, so as to avoid the formation of a temperature difference between the inside and outside of the corrosion-resistant outer shell 2, keep the inner wall of the corrosion-resistant outer shell 2 dry, and prevent the motor body 1 from being damp and corroded.

[0017] The circulating cooling assembly 3 includes a first cooling plate 31, a second cooling plate 32, and a third cooling plate 33. The first cooling plate 31 and the second cooling plate 32 are disposed on both sides of the motor body 1, and the third cooling plate 33 is disposed at the bottom of the motor body 1. Each of the first cooling plate 31, the second cooling plate 32, and the third cooling plate 33 is provided with a cooling pipe. One end of the cooling pipe is provided with a liquid inlet, and the other end is provided with a liquid outlet. The liquid outlet of the first cooling plate 31 is connected to the liquid inlet of the second cooling plate 32, and the liquid outlet of the second cooling plate 32 is connected to the liquid inlet of the third cooling plate 33. The liquid inlet of the first cooling plate 31 is connected to the liquid inlet pipe 5, and the liquid outlet of the third cooling plate 33 is connected to the liquid outlet pipe 6. The circulating cooling assembly 3 carries away the hot air generated by the motor body 1 inside the anti-corrosion shell 2, avoids the formation of a temperature difference between the inside and outside of the anti-corrosion shell 2, keeps the inner wall of the anti-corrosion shell 2 dry, and prevents the motor body 1 from being damp and corroded.

[0018] The first cooling plate 31, the second cooling plate 32 and the third cooling plate 33 are all equipped with heat sinks. The cooling pipes pass through the heat sinks and are wound in an "S" shape inside the heat sinks, so that the circulating cooling assembly 3 has a better heat dissipation effect and carries away the heat generated by the motor body 1 inside the anti-corrosion shell 2.

[0019] The anti-corrosion shell 2 includes an inner metal shell, a middle anti-corrosion coating, and an outer protective shell. The middle anti-corrosion coating is applied to the outer surface of the inner metal shell, and the outer protective shell is wrapped around the outside of the middle anti-corrosion coating. The inner metal shell is made of stainless steel, the middle anti-corrosion coating is made of polytetrafluoroethylene, and the outer protective shell is made of fiberglass. This design gives the anti-corrosion shell 2 a better anti-corrosion effect and prevents the external environment from corroding the anti-corrosion shell 2.

[0020] The anti-corrosion housing 2 has a mounting hole at the end away from the motor output shaft 11. A cooling fan 4 is installed in the mounting hole to dissipate the heat generated by the motor body 1 inside the anti-corrosion housing 2.

[0021] The inner and outer surfaces of the junction box 12 are coated with an anti-corrosion coating, and the junction box 12 is equipped with wiring terminals 7.

[0022] Of course, the above description is not intended to limit the present utility model, and the present utility model is not limited to the examples given above. Any changes, modifications, additions or substitutions made by those skilled in the art within the scope of the present utility model should also fall within the protection scope of the present utility model.

Claims

1. A corrosion-proof direct current motor, characterized by, The device includes a motor body (1), an anti-corrosion shell (2) is provided on the outside of the motor body (1), a circulating cooling assembly (3) is provided inside the anti-corrosion shell (2), the circulating cooling assembly (3) is located between the inner wall of the anti-corrosion shell (2) and the motor body (1), the circulating cooling assembly (3) is provided with at least one cooling plate, the circulating cooling assembly (3) is provided with an inlet pipe (5) and an outlet pipe (6), the inlet pipe (5) and the outlet pipe (6) both penetrate the anti-corrosion shell (2) and extend to the outside; The motor body (1) is provided with a motor output shaft (11) and a junction box (12). A sealed bearing is provided between the motor output shaft (11) and the anti-corrosion housing (2). A terminal (7) is provided on the anti-corrosion housing (2) near the junction box (12).

2. The corrosion-proof direct current motor according to claim 1, characterized in that, The circulating cooling assembly (3) includes a first cooling plate (31), a second cooling plate (32), and a third cooling plate (33). Each of the first cooling plate (31), the second cooling plate (32), and the third cooling plate (33) is provided with a cooling pipe. One end of the cooling pipe is provided with a liquid inlet, and the other end is provided with a liquid outlet. The liquid outlet of the first cooling plate (31) is connected to the liquid inlet of the second cooling plate (32), and the liquid outlet of the second cooling plate (32) is connected to the liquid inlet of the third cooling plate (33). The liquid inlet of the first cooling plate (31) is connected to the liquid inlet pipe (5), and the liquid outlet of the third cooling plate (33) is connected to the liquid outlet pipe (6).

3. The corrosion-proof direct current motor according to claim 2, characterized in that, The first cooling plate (31), the second cooling plate (32) and the third cooling plate (33) are all provided with heat dissipation fins, and the cooling pipe passes through the heat dissipation fins and is wound in an "S" shape inside the heat dissipation fins.

4. The corrosion-proof direct current motor according to claim 1, characterized in that, The anti-corrosion shell (2) includes an inner metal shell, a middle anti-corrosion coating and an outer protective shell. The middle anti-corrosion coating is applied to the outer surface of the inner metal shell, and the outer protective shell is wrapped around the outside of the middle anti-corrosion coating. The inner metal shell is a stainless steel shell, the middle anti-corrosion coating is a polytetrafluoroethylene coating, and the outer protective shell is a fiberglass shell.

5. The corrosion-proof direct current motor according to claim 1, characterized in that, The anti-corrosion housing (2) has a mounting hole at one end away from the motor output shaft (11), and a cooling fan (4) is installed in the mounting hole.

6. The corrosion-proof direct current motor according to claim 1, characterized in that, The inner and outer surfaces of the junction box (12) are coated with an anti-corrosion coating; the junction box (12) is provided with wiring terminals (7).

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