Oil-sealed motor

Abstract

This application discloses a dual-purpose (dry and wet) motor with an oil seal, comprising: a motor housing with an opening at one end and an end cover installed inside the opening; an output shaft rotatably mounted inside the motor housing; a cross-flow impeller at one end of the motor housing; an impeller housing at another end of the motor housing; several air outlets on the side wall of the impeller housing; an air inlet at the top of the impeller housing; and an oil seal between the impeller housing and the output shaft, the oil seal contacting the output shaft. By employing this method, a dynamic sealing barrier is formed through the oil seal, significantly improving waterproof and dustproof capabilities, ensuring long-term stable operation of the fan in complex environments such as humid, dry, and dusty conditions. This eliminates the burden on users of separating equipment due to environmental differences, greatly improving product versatility and economy. Through heat dissipation design, temperature rise is controlled while preventing dust and moisture, achieving the dual goals of reduced energy consumption and extended lifespan.

Description

Technical Field

[0001] This utility model relates to the field of motor technology, and in particular to a motor with an oil seal that can be used for both dry and wet applications. Background Technology

[0002] Floor scrubbers, as a star product category in the cleaning appliance market, have become the second largest core product category of cleaning appliances in my country.

[0003] Because floor scrubbers are frequently exposed to water, the sealing of their internal motors is of high importance. Currently, in the field of sealing and protection, traditional labyrinth or rubber sealing structures have limited effectiveness in blocking micron-sized dust and moisture, and cannot meet the long-term protection needs of high-humidity and high-dust environments. In terms of operating condition adaptability and energy consumption life, existing products generally adopt a single-environment design concept. At the same time, conventional motor design and air duct layout cannot simultaneously ensure efficient energy conversion and anti-pollution capabilities, and the overheating problem caused by dust accumulation further restricts performance improvement.

[0004] Therefore, there is an urgent need to design a motor with an oil seal that can be used for both dry and wet applications to solve one or more technical problems that are lacking in the existing technology. Summary of the Invention

[0005] The technical solution adopted by this utility model to solve the above-mentioned technical problems is: a motor with an oil seal for both dry and wet use, characterized in that it includes: a motor housing, one end of which is open, an end cap installed inside the open end of the motor housing, an output shaft rotatably disposed inside the motor housing, both ends of the output shaft passing through the motor housing, a crossflow impeller disposed at the end of the motor housing away from the opening, the crossflow impeller being fixedly connected to one end of the output shaft, an impeller housing disposed at the end of the motor housing with the crossflow impeller, the impeller housing being detachably connected to the motor housing, several air outlets opening on the side wall of the impeller housing, an air inlet opening at the top of the impeller housing, the air inlet end of the crossflow impeller corresponding to the air inlet, and the air outlet end corresponding to the air outlet, and an oil seal disposed between the impeller housing and the output shaft, the oil seal contacting the output shaft.

[0006] In a preferred embodiment, the end of the motor housing away from the opening also has a protruding mounting cavity, a bearing is provided in the mounting cavity, the rotating shaft is rotatably connected to the motor housing through the bearing, the oil seal is located above the mounting cavity, and the impeller housing cooperates with the mounting cavity to press the oil seal.

[0007] In a preferred embodiment, the oil seal has a raised step shape in the middle, and an upper wear-resistant part and a lower wear-resistant part are provided on the inner side of the middle part of the oil seal. The upper wear-resistant part and the lower wear-resistant part are spaced apart, and grease is provided between the upper wear-resistant part and the lower wear-resistant part.

[0008] In a preferred embodiment, the portion of the output shaft located inside the motor housing is further fixedly connected to an iron core, and a heat dissipation fan is connected to the end of the iron core facing the end cover.

[0009] In a preferred embodiment, the motor housing has an end cover at one end and a motor cover at the other end. The motor cover fixes the end cover inside the motor housing. The motor cover also has a mounting cavity and a bearing in the middle, and the output shaft is connected to the bearing.

[0010] The beneficial effects of this utility model are: by setting up the oil seal to form a dynamic sealing barrier, the waterproof and dustproof capabilities are significantly improved, ensuring that the fan can operate stably for a long time in complex environments such as humid, dry, and dusty conditions, eliminating the burden on users to set up separate equipment due to environmental differences, and greatly improving the product's universality and economy; through the heat dissipation design, the temperature rise is controlled while preventing dust and moisture, achieving the dual goals of reducing energy consumption and extending life. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a partial cross-sectional view of the present invention; Figure 3 for Figure 2 Enlarged view of point A in the middle.

[0012] In the picture: 10. Motor housing; 101. Mounting cavity; 102. Bearing; 11. End cover; 12. Output shaft; 13. Iron core; 14. Crossflow impeller; 15. Impeller housing; 151. Air outlet; 152. Air inlet; 16. Oil seal; 161. Upper wear-resistant part; 162. Lower wear-resistant part; 17. Cooling fan blades; 18. Motor cover. Detailed Implementation

[0013] To make the above-mentioned objects, features, and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a full understanding of this utility model. However, this utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed below.

[0014] In the description of the embodiments of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "connection" and "installation" should be interpreted broadly. For example, "connection" can be a detachable connection or a non-detachable connection; it can be a direct connection or an indirect connection through an intermediate medium. Furthermore, "connection" can be a direct connection or an indirect connection through an intermediate medium. "Fixed" means that the relative positional relationship remains unchanged after the connection. The directional terms mentioned in the embodiments of this utility model, such as "inner," "outer," "top," and "bottom," are only for reference to the directions in the accompanying drawings. Therefore, the directional terms used are for better and clearer explanation and understanding of the embodiments of this utility model, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this utility model.

[0015] In this embodiment of the invention, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined with "first" and "second" may explicitly or implicitly include one or more of that feature.

[0016] In this embodiment of the utility model, "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent three situations: A exists alone, A and B exist simultaneously, and B exists alone. Additionally, the character " / " in this document generally indicates that the preceding and following related objects have an "or" relationship.

[0017] References to "one embodiment" or "some embodiments" as used in this specification mean that one or more embodiments of the present invention include a specific feature, structure, or characteristic described in connection with that embodiment. Therefore, the phrases "in one embodiment," "in some embodiments," "in other embodiments," "in still other embodiments," etc., appearing in different parts of this specification do not necessarily refer to the same embodiment, but rather mean "one or more, but not all, embodiments," unless otherwise specifically emphasized. The terms "comprising," "including," "having," and variations thereof mean "including but not limited to," unless otherwise specifically emphasized. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0018] like Figures 1-3As shown, this utility model provides a motor with an oil seal for both dry and wet applications. Its features include: a motor housing 10, one end of which is open; an end cap 11 is installed inside the open end of the motor housing 10; an output shaft 12 is rotatably disposed inside the motor housing 10; both ends of the output shaft 12 extend out of the motor housing 10; a crossflow impeller 14 is also provided at the end of the motor housing 10 away from the opening; the crossflow impeller 14 is fixedly connected to one end of the output shaft 12. The crossflow impeller 14 is provided with an impeller housing 15 at one end. The impeller housing 15 is detachably connected to the motor housing 10. The side wall of the impeller housing 15 has several air outlets 151, and the top of the impeller housing 15 has an air inlet 152. The air inlet end of the crossflow impeller 14 corresponds to the air inlet 152, and the air outlet end corresponds to the outlet air. An oil seal 16 is also provided between the impeller housing 15 and the output shaft 12. The oil seal 16 is in contact with the output shaft 12. Specifically, the motor housing 10 is open at one end, and an end cover 11 is installed inside the open end. The end cover 11 contains conventional structures such as carbon brushes and conductive terminals, which will not be described in detail here. An output shaft 12 is also rotatably connected inside the motor housing 10. The two ends of the output shaft 12 extend out of the motor housing 10. The part of the output shaft 12 inside the motor housing 10 is also connected to an iron core 13 to form a rotor. Magnetic pole pieces are attached to the inner wall of the motor housing 10 at positions corresponding to the iron core 13, so that the motor housing 10 forms a stator. The end of the motor housing 10 away from the opening has an outwardly protruding mounting cavity 101. A bearing 102 is fixedly installed in the mounting cavity 101, and the output shaft... Output shaft 12 is rotatably connected to motor housing 10 via bearing 102. At the end of motor housing 10 where end cover 11 is located, a motor cover 18 is also provided. This motor cover 18 fixes end cover 11 inside motor housing 10. The middle of the motor cover 18 also has a mounting cavity 101 and a bearing 102 for connection with the output shaft 12 extending from that end. At the end of motor housing 10 away from the opening, an impeller housing 15 is detachably fixedly connected via fasteners. The top of the impeller housing 15 has an air inlet 152, and several air outlets 151 are provided on the side walls of the impeller housing 15. A crossflow impeller 14 is also provided inside the impeller housing 15. This crossflow impeller 14 is connected to the output shaft 12. The output shaft 12 is fixedly connected and drives the cross-flow impeller 14 to rotate. The cross-flow impeller 14 is an impeller that draws air in axially and discharges air radially. The air inlet end of the cross-flow impeller 14 corresponds to the air inlet 152, and the air outlet end corresponds to the air outlet 151. When the impeller rotates, air is drawn in axially and discharged radially. This method can effectively prevent water vapor and dust from entering through the air holes opened on the side wall of the motor housing 10. Since the output shaft 12 extends out of the motor housing 10 and is located inside the impeller housing 15, there will be a gap to avoid affecting the rotation of the output shaft 12. To prevent water vapor and dust from entering the motor housing 10 through the gap, a gap is formed between the impeller housing 15 and the output shaft 12. The contact area is provided with an oil seal 16, which is in the shape of a raised step. The oil seal 16 is pressed by the impeller housing 15 and the mounting cavity 101 to fix it above the mounting cavity 101. The inner side of the oil seal 16 is provided with an upper wear-resistant part 161 and a lower wear-resistant part 162 that are spaced apart. Grease is provided between the upper wear-resistant part 161 and the lower wear-resistant part 162. The upper wear-resistant part 161 and the lower wear-resistant part 162 are in contact with the output shaft 12 and can prevent grease leakage. At the same time, it can prevent moisture and dust from entering. Through the dynamic sealing barrier, the waterproof and dustproof capabilities are significantly improved, ensuring that the motor can operate stably for a long time in complex environments such as humid and dusty environments.

[0019] To control the operating temperature of the motor, a heat dissipation fan 17 is connected to one end of the iron core 13 facing the end cover 11. The heat dissipation fan 17 rotates with the rotation of the iron core 13, accelerating the airflow to achieve heat exchange and thus control the operating temperature.

[0020] In summary, the oil seal 16 forms a dynamic sealing barrier, significantly improving waterproof and dustproof capabilities, ensuring long-term stable operation of the fan in complex environments such as humid, dry, and dusty conditions. This eliminates the burden on users of distributing equipment due to environmental differences, greatly enhancing the product's versatility and economy. Through heat dissipation design, temperature rise is controlled while preventing dust and moisture, achieving the dual goals of reducing energy consumption and extending lifespan.

[0021] This invention is not limited to the description in the specification and embodiments. Therefore, other advantages and modifications can be readily realized by those skilled in the art. Thus, without departing from the spirit and scope of the general concept as defined by the claims and their equivalents, this invention is not limited to the specific details, representative devices and illustrated examples shown and described herein.

Claims

1. A motor with an oil seal for both dry and wet applications, characterized in that, include: The motor housing has an opening at one end, and an end cap is installed inside the opening end. An output shaft is rotatably mounted inside the motor housing, with both ends of the output shaft extending out of the motor housing. A crossflow impeller is also provided at the end of the motor housing away from the opening, and the crossflow impeller is fixedly connected to one end of the output shaft. An impeller housing is also provided at the end of the motor housing with the crossflow impeller, and the impeller housing is detachably connected to the motor housing. Several air outlets are opened on the side wall of the impeller housing, and an air inlet is opened on the top of the impeller housing. The air inlet end of the crossflow impeller corresponds to the air inlet, and the air outlet end corresponds to the air outlet. An oil seal is also provided between the impeller housing and the output shaft, and the oil seal contacts the output shaft.

2. The motor with oil seal for both dry and wet use according to claim 1, characterized in that, The motor housing has a protruding mounting cavity at the end away from the opening. A bearing is installed in the mounting cavity. The output shaft is rotatably connected to the motor housing through the bearing. The oil seal is located above the mounting cavity. The impeller housing cooperates with the mounting cavity to press the oil seal.

3. The motor with oil seal for both dry and wet applications according to claim 2, characterized in that, The oil seal has a raised step shape in the middle. The inner side of the middle part of the oil seal is provided with an upper wear-resistant part and a lower wear-resistant part. The upper wear-resistant part and the lower wear-resistant part are spaced apart. Grease is provided between the upper wear-resistant part and the lower wear-resistant part.

4. The motor with oil seal for both dry and wet applications according to claim 1, characterized in that, The portion of the output shaft located inside the motor housing is also fixedly connected to an iron core, and a heat dissipation fan is connected to the end of the iron core facing the end cover.

5. The motor with oil seal for both dry and wet applications according to claim 1, characterized in that, The motor housing has an end cover at one end and a motor cover at the other end. The motor cover fixes the end cover inside the motor housing. The motor cover also has a mounting cavity and a bearing in the middle. The output shaft is connected to the bearing.

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