A waterproof structure for a water pump motor
Through innovative design of the housing and heat dissipation components, the problems of waterproofing and heat dissipation when the water pump motor is exposed to water are solved, achieving efficient waterproofing and efficient heat dissipation, extending the service life of the water pump motor and improving its reliability.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- CHINA ACAD OF AEROSPACE AERODYNAMICS
- Filing Date
- 2025-03-28
- Publication Date
- 2026-05-26
AI Technical Summary
Existing water pump motors are prone to short circuits and reduced insulation performance when exposed to water, affecting normal operation and service life, and lack effective waterproofing and heat dissipation design.
The design employs a housing and heat dissipation components, including a mounting shell, heat dissipation fins, sealing joints, waterproof components, and a water curtain made of superabsorbent resin material. Through a combination of ceramic, polyethylene, and rubber materials, waterproofing and efficient heat dissipation are achieved.
It improves the water pump motor's waterproofness and durability, ensures stable operation, extends its service life, and enhances its reliability and efficiency in various environments.
Smart Images

Figure CN224289456U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to a waterproof structure for a water pump motor, belonging to the field of water pump manufacturing technology. Background Technology
[0002] In the current use of water pumps, it is not uncommon for the motor to get wet due to various reasons, such as improper operation, environmental factors, or equipment aging. This situation may lead to short circuits, decreased insulation performance, or even damage to the motor, seriously affecting the normal operation and service life of the water pump. Ensuring the waterproof performance of the water pump motor and timely maintenance are crucial to ensuring the reliable operation of the water pump. Therefore, a waterproof structure for water pump motors has been developed. Utility Model Content
[0003] The technical problem solved by this utility model is to overcome the shortcomings of the prior art and propose a waterproof structure for a water pump motor. Through the design of the housing component and heat dissipation component, the heat dissipation, waterproofness and durability of the water pump motor are improved, and the stable operation of the water pump motor is guaranteed.
[0004] The technical solution of this utility model is:
[0005] A waterproof structure for a water pump motor includes a stand, a housing assembly, and a heat dissipation assembly;
[0006] The housing assembly is fitted onto the outer surface of the water pump motor and includes a mounting shell, heat dissipation fins, a sealing joint, and a waterproof component. The mounting shell has a cylindrical structure with several heat dissipation fins fixedly installed on the outer surface of its side walls. A circular hole is opened at the center of the top, and a sealing joint is installed on the circular hole. The sealing joint is connected to the output end of the water pump motor. The waterproof component is installed on the inner surface of the mounting shell.
[0007] The legs are disposed on the lower surface of the side wall of the mounting housing;
[0008] The heat dissipation component is fitted onto the outer surface of the bottom of the mounting housing.
[0009] Furthermore, the housing assembly is also provided with a connecting shaft, which is connected to the inner cavity of the sealing joint via a bearing, and the connecting shaft drives the water pump.
[0010] Furthermore, the waterproof component has a three-layer structure, namely a hydrophobic layer fixedly installed around the inner wall of the mounting shell, an isolation layer fixedly connected to the inner surface of the hydrophobic layer, and a connecting layer bonded to the inner surface of the isolation layer.
[0011] Furthermore, the hydrophobic layer is made of ceramic material, the insulating layer is made of polyethylene material, and the connecting layer is made of rubber material.
[0012] Furthermore, the inner surface shape of the connecting layer is designed to conform to the shape of the water pump motor, and the water pump motor is installed inside the waterproof component.
[0013] Furthermore, the heat dissipation assembly includes a cover and a water curtain;
[0014] The cover is fixedly connected to the outer surface of the bottom of the mounting shell, and a vent hole is provided on the outer end face of the cover;
[0015] The water curtain is fixedly installed inside the cover shell.
[0016] Furthermore, the water curtain is made of superabsorbent resin material.
[0017] The advantages of this utility model compared with the prior art are as follows:
[0018] This invention achieves excellent waterproof performance and efficient heat dissipation for the water pump through the design of the housing assembly and heat dissipation assembly. The housing assembly, including the fixed mounting shell, heat dissipation fins, sealing joint, connecting shaft, and waterproof components, as well as the heat dissipation assembly, including the cover, vents, and water curtain, work together to ensure that the water pump is effectively waterproofed when exposed to moisture through the material properties of the hydrophobic layer, the insulating layer, and the connecting layer. At the same time, the water curtain made of superabsorbent resin material maintains ventilation when dry and becomes hydrophobic when wet, ensuring stable operation and heat dissipation of the motor. This not only improves the water pump's waterproofness and durability but also extends the motor's service life through effective heat dissipation, ensuring the water pump's reliability and efficiency in various environments. Attached Figure Description
[0019] Various other advantages and benefits will become apparent to those skilled in the art upon reading the following detailed description of preferred embodiments. The accompanying drawings are for illustrative purposes only and are not intended to limit the scope of the invention. Furthermore, the same reference numerals denote the same parts throughout the drawings. In the drawings:
[0020] Figure 1 This is a schematic diagram of the water pump motor structure according to an embodiment of the present utility model;
[0021] Figure 2 This is a schematic diagram showing the connection between the mounting shell and the heat dissipation fins in an embodiment of this utility model;
[0022] Figure 3 This is a schematic diagram showing the connection between the cover and the water curtain in an embodiment of this utility model;
[0023] Figure 4 This is a schematic diagram showing the connection between the hydrophobic layer and the insulating layer in an embodiment of this utility model. Detailed Implementation
[0024] Exemplary embodiments of the present disclosure will now be described in more detail with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.
[0025] This invention proposes a waterproof structure for a water pump motor, which improves the service life of the water pump motor.
[0026] Water pump motors with waterproof structures, such as Figure 1 The waterproof structure includes a stand 101, a housing assembly 102, and a heat dissipation assembly 103. The housing assembly 102 is fitted onto the outer surface of the water pump motor. The stand 101 is located on the lower surface of the side wall of the housing assembly 102 to support the entire water pump motor and increase the heat dissipation range. The heat dissipation assembly 103 is located at the bottom of the water pump motor and is mounted on the outer surface of the housing assembly 102 for use with the housing assembly 102.
[0027] The housing assembly 102 includes a mounting housing 102a, heat dissipation fins 102b fixedly mounted on the outer surface of the mounting housing 102a, and a sealing joint 102c, a connecting shaft 102d, and a waterproof component 102e that penetrate the side wall of the mounting housing 102a. Figure 2 As shown. The stand 101 is disposed on the lower surface of the side wall of the mounting housing 102a.
[0028] The heat dissipation fins 102b can quickly dissipate the heat generated by the water pump motor during operation, and the sealed joint 102c can isolate the motor installed inside the waterproof structure from the outside, further improving the waterproof performance.
[0029] The connecting shaft 102d is connected to the inner cavity of the sealing joint 102c via a bearing.
[0030] Waterproof component 102e is disposed on the inner surface of mounting housing 102a, such as Figure 4 As shown, the mounting housing 102a includes a hydrophobic layer 102e-1 fixedly installed on the inner wall of the housing 102a, an insulating layer 102e-2 fixedly connected to the inner surface of the hydrophobic layer 102e-1, and a connecting layer 102e-3 adhered to the inner surface of the insulating layer 102e-2. Preferably, the hydrophobic layer 102e-1 is made of ceramic material, the insulating layer 102e-2 is made of polyethylene material, and the connecting layer 102e-3 is made of rubber material. Ceramic material has good hydrophobicity, polyethylene material has good waterproof performance, and rubber material, while possessing waterproof performance, also has good shaping ability, allowing the connecting layer 102e-3 to be molded into a shape convenient for motor installation.
[0031] Heat dissipation component 103, such as Figure 3As shown, it includes a cover shell 103a and a water curtain 103c. The cover shell 103a is fixedly connected to the side wall of the mounting shell 102a, and a vent hole 103b is provided on the outer surface of the cover shell 103a. The water curtain 103c is fixedly installed in the inner cavity of the cover shell 103a and is made of super absorbent resin material.
[0032] In use, the motor is installed inside the waterproof component 102e within the mounting housing 102a. The motor's output end is connected to the sealing connector 102c, and the water pump is driven by the shaft on the sealing connector 102c. The heat generated during motor operation is dissipated through the heat dissipation fins 102b. The water curtain 103c is made of superabsorbent resin material with tiny pores inside. When dry, it can ventilate with the outside by connecting to the vent holes 103b on the cover plate. When wet, the water curtain 103c absorbs water, and after being completely soaked, the material changes from absorbent to hydrophobic, creating a sealed space inside the mounting housing 102a. The hydrophobic layer 102e-1 is made of ceramic material to prevent water ingress. The insulating layer 102e-2 is made of polyethylene material, which has good waterproof performance and further improves the waterproof performance of the device. The connecting layer 102e-3 is made of rubber material, which has good waterproof performance and good plasticity. The connecting layer 102e-3 is shaped to fit the motor installation and reduces motor vibration during use.
[0033] In summary, by installing the motor in the cavity with waterproof component 102e and connecting it to the output end to drive the water pump via sealed connector 102c, this design ensures that the heat generated by the motor during operation can be effectively dissipated through the heat dissipation fins 102b. At the same time, the water curtain 103c, made of superabsorbent resin material, maintains ventilation when dry and becomes hydrophobic when exposed to water, forming a sealed space. Combined with the hydrophobic layer 102e-1 of ceramic material, the insulating layer 102e-2 of polyethylene material, and the rubber connecting layer 102e-3 with plasticity and waterproof properties, the waterproof performance of the device is greatly improved, and motor vibration is reduced, thereby improving the overall stability and service life of the water pump and ensuring reliable operation in various environments.
[0034] The above-described embodiments are merely preferred embodiments of this utility model. Ordinary variations and substitutions made by those skilled in the art within the scope of this utility model's technical solution should be included within the protection scope of this utility model.
Claims
1. A waterproof structure for a water pump motor, characterized in that, It includes a tripod (101), a housing assembly (102), and a heat dissipation assembly (103); The housing assembly (102) is fitted onto the outer surface of the water pump motor and includes a mounting shell (102a), heat dissipation fins (102b), a sealing joint (102c), and a waterproof component (102e). The mounting shell (102a) is a cylindrical structure with several heat dissipation fins (102b) fixedly installed on the outer surface of its sidewalls. A circular hole is opened at the center of the top, and a sealing joint (102c) is installed on the circular hole. The sealing joint (102c) is connected to the output end of the water pump motor. The waterproof component (102e) is installed on the inner surface of the mounting shell (102a). The stand (101) is disposed on the lower surface of the side wall of the mounting housing (102a); The heat dissipation component (103) is sleeved on the bottom outer surface of the mounting housing (102a).
2. The waterproof structure of a water pump motor according to claim 1, characterized in that, The housing assembly (102) is also provided with a connecting shaft (102d), which is connected to the inner cavity of the sealing joint (102c) via a bearing, and the connecting shaft (102d) drives the water pump.
3. The waterproof structure of a water pump motor according to claim 1, characterized in that, The waterproof component (102e) has a three-layer structure, namely a hydrophobic layer (102e-1) fixedly installed on the inner wall of the mounting shell (102a) for the entire circumference, an isolation layer (102e-2) fixedly connected to the inner surface of the hydrophobic layer (102e-1), and a connecting layer (102e-3) bonded to the inner surface of the isolation layer (102e-2).
4. The waterproof structure of a water pump motor according to claim 3, characterized in that, The hydrophobic layer (102e-1) is made of ceramic material, the insulating layer (102e-2) is made of polyethylene material, and the connecting layer (102e-3) is made of rubber material.
5. The waterproof structure of a water pump motor according to claim 3, characterized in that, The inner surface shape of the connecting layer (102e-3) is designed to conform to the shape of the water pump motor, and the water pump motor is installed inside the waterproof component.
6. The waterproof structure of a water pump motor according to claim 1, characterized in that, The heat dissipation assembly (103) includes a cover (103a) and a water curtain (103c); The cover (103a) is fixedly connected to the bottom outer surface of the mounting shell (102a), and a vent hole (103b) is provided on the outer end face of the cover (103a); The water curtain (103c) is fixedly installed inside the cover shell (103a).
7. The waterproof structure of a water pump motor according to claim 6, characterized in that, The water curtain (103c) is made of super absorbent resin material.