Shielding sleeve assembly, motor and pump assembly

Abstract

The utility model provides a shielding sleeve assembly, a motor and a pump assembly, and relates to the field of shielding type circulating pumps. The shielding sleeve assembly comprises a shielding sleeve and a cover body, the shielding sleeve comprises a first body and a sealing part, the first body is provided with a cavity with an opening in one side, a first bearing chamber is arranged on the side, away from the opening, of the first body, and the sealing part is connected with the first body, located on the side, close to the opening, of the first body and arranged in the circumferential direction of the first body; the cover body comprises a second body, a positioning part and a welding part, the second body covers the opening and is provided with a second bearing chamber, the positioning part is connected with the second body and is matched with the inner wall of the cavity, and the welding part is arranged along the periphery of the positioning part and is connected with the sealing part. The coaxiality of the first bearing chamber and the second bearing chamber is ensured through the installation cooperation between the shielding sleeve and the cover body.

Description

Technical Field

[0001] The present application relates to the field of canned circulation pumps, and more specifically, to a canned component, a motor, and a pump component. Background Art

[0002] Currently, in the related art, a canned circulation pump includes a cover body, a canned component, and a seal. The cover body covers the opening side of the canned component, and the seal is disposed between the cover body and the canned component, thereby realizing the seal between the canned component and the cover body. However, since the seal is a rubber part, sealing the gap between the canned component and the cover body through the seal will result in a relatively high risk of seal failure between the canned component and the cover body, thereby affecting the sealing effect between the canned component and the cover body. Summary of the Utility Model

[0003] The present application aims to solve at least one of the technical problems existing in the prior art or related art.

[0004] To this end, a first aspect of the present application provides a canned component.

[0005] A second aspect of the present application provides a motor.

[0006] A third aspect of the present application provides a pump component.

[0007] In view of this, a first aspect of the present application provides a canned component, including: a canned component and a cover body, wherein the canned component includes a first body and a sealing portion. The first body has a cavity with an opening on one side, and a first bearing chamber is provided on the side of the first body away from the opening. The sealing portion is connected to the first body, is located on the side of the first body close to the opening, and is arranged along the circumferential direction of the first body. The cover body includes a second body, a positioning portion, and a welding portion. The second body covers the opening, a second bearing chamber is provided on the second body, the positioning portion is connected to the second body and cooperates with the inner wall of the cavity, and the welding portion is arranged along the outer circumference of the positioning portion and is connected to the sealing portion.

[0008] In this technical solution, the canned component includes a canned component and a cover body. By the installation and cooperation between the canned component and the cover body, the coaxiality of the first bearing chamber and the second bearing chamber is ensured.

[0009] The present application realizes the positioning of the canned component and the cover body through the cooperation between the positioning portion of the cover body and the inner wall of the cavity, and realizes the seal through the welding of the welding portion of the cover body and the sealing portion of the canned component, enhancing the structure of the canned component, reducing the probability of seal failure between the canned component and the cover body, and thus improving the sealing effect between the canned component and the cover body. And through the welding of the welding portion and the sealing portion, the influence on the cooperation accuracy between the positioning portion and the inner wall of the cavity is reduced, and thus the coaxiality of the first bearing chamber and the second bearing chamber is improved.

[0010] Specifically, in the present application, the welding part of the cover body is welded to the sealing part of the shielding sleeve, making the position of the shielding sleeve and the cover body more firm. When the water pump starts to work, the influence of vibration on the positional relationship between the shielding sleeve and the cover body is reduced, thereby ensuring the coaxiality of the first bearing chamber and the second bearing chamber.

[0011] Specifically, the shielding sleeve of the present application includes a first body and a sealing part. The first body has a cavity with an opening on one side. A first bearing chamber is provided on the side of the first body far away from the opening. In this way, one side of the cavity is an open structure, and the other side is the first bearing chamber. When installing the bearing in the first bearing chamber, it can be installed through the open side of the cavity, making it more convenient to install the components in the cavity of the shielding sleeve.

[0012] In addition, the shielding sleeve assembly in the above technical solution provided by the present application may further have the following additional technical features:

[0013] In some technical solutions of the present application, optionally, the positioning part is in interference fit with the inner wall of the cavity.

[0014] In this technical solution, the positioning part is positioned by interference press-fitting with the inner wall of the cavity, making the positioning part fit tightly against the inner wall of the cavity, improving the fitting accuracy between the positioning part and the inner wall of the cavity, thereby ensuring the coaxiality of the first bearing chamber and the second bearing chamber, and reducing the risk of rotor jamming or the problem of one-sided bearing wear.

[0015] Specifically, the positioning part of the cover body is interference press-fitted with the inner wall of the shielding sleeve. The welding part of the cover body is relatively small and is completely immersed in the circulating medium without participating in the sealing. After the press-fitting is completed, the welding part of the cover body and the sealing part of the shielding sleeve are welded to further enhance the connection strength between the two. Through this structural form, both the defect of poor coaxiality between the first bearing chamber and the second bearing chamber, which is prone to jamming, is avoided, and the sealing performance of the water pump is enhanced.

[0016] In some technical solutions of the present application, optionally, the first body and the sealing part are of an integral structure; and / or the second body and the positioning part are of an integral structure.

[0017] In this technical solution, the first body and the sealing part are of an integral structure, and the second body and the positioning part are of an integral structure. Specifically, the shielding sleeve and the cover body are made by integral stamping, which simplifies the assembly process when processing the shielding sleeve and the cover body, reduces the production cost, and is conducive to mass production.

[0018] In some technical solutions of the present application, optionally, the shielding sleeve and / or the cover body is a sheet metal part.

[0019] In this technical solution, the shielding sleeve and / or the cover body is a sheet metal part, such as made of stainless steel, and is of an integral structure, ensuring the strength of the structure of the shielding sleeve and the cover body, and strengthening the structural strength of the shielding sleeve assembly.

[0020] Specifically, the shielding sleeve and / or the cover body are of an integral structure and are sheet metal parts, and thus can be formed in one stamping process, which simplifies the assembly process, reduces the production cost, and is conducive to mass production.

[0021] In some technical solutions of the present application, optionally, the first body is cylindrical and is arranged along the axial direction of the shielding sleeve assembly; the first bearing chamber is arranged on the first side of the first body in the axial direction, and the opening of the first bearing chamber faces the cavity and is used for installing the first bearing.

[0022] In this technical solution, the first body is of a cylindrical structure, and the first bearing chamber of the first body installs the first bearing. During installation, the installation can be carried out through the opening of the first body, which facilitates the installation process; the opening of the first bearing chamber faces the cavity, making the shielding sleeve assembly enclosed.

[0023] In some technical solutions of the present application, optionally, the sealing part is annular and is located outside the first body. The inner side of the sealing part is connected to the side of the first body close to the opening, and the outer side of the sealing part extends in a direction away from the axis of the shielding sleeve assembly.

[0024] In this technical solution, the first body and the sealing part are of an integral structure, and the sealing part is annular. When processing the shielding sleeve, it is made by stainless steel stamping, which simplifies the assembly process and is conducive to mass production.

[0025] In some technical solutions of the present application, optionally, the opening of the second bearing chamber faces the cavity and is used for installing the second bearing.

[0026] In this technical solution, the opening of the second bearing chamber of the cover body faces the cavity, and the second bearing chamber installs the second bearing, which is used to support and position the rotor assembly.

[0027] In some technical solutions of the present application, optionally, the second body is provided with a groove recessed towards the cavity. The groove is arranged around the bearing chamber and is located between the positioning part and the bearing chamber.

[0028] In this technical solution, the second body is provided with a groove recessed towards the cavity. The side walls of the groove are respectively the side walls of the second bearing chamber and the positioning part. Through the structural design of the groove, the structural strength of the cover body is improved.

[0029] In some technical solutions of the present application, optionally, at least part of the welding part is in contact with the sealing part.

[0030] In this technical solution, by welding the welding part and the sealing part, at least part of the welding part is in contact with the sealing part, which ensures the strength and reliability of the structure between the front cover and the shielding sleeve. At the same time, the partial contact between the welding part and the sealing part avoids the influence of the cooperation between the welding part and the sealing part on the coaxiality of the first bearing chamber and the second bearing chamber.

[0031] In the second aspect of the present application, a motor is provided. The motor includes the shielding sleeve assembly provided in any of the above technical solutions. Therefore, this motor also includes all the beneficial effects of the shielding sleeve assembly provided in any of the above technical solutions. To avoid repetition, they will not be elaborated here.

[0032] In some technical solutions of the present application, optionally, the motor further includes: a stator assembly, a rotor assembly, a first bearing, and a second bearing. The stator assembly is disposed on the shielding sleeve; the rotor assembly is opposite to the stator assembly and is located inside the cavity. The rotor assembly includes a rotating shaft; the first bearing is embedded in the first bearing chamber and sleeved on the first end of the rotating shaft; the second bearing is embedded in the second bearing chamber and sleeved on the second end of the rotating shaft.

[0033] In this technical solution, the motor further includes a stator assembly, a rotor assembly, a first bearing, and a second bearing. Among them, the rotor assembly is located inside the cavity of the shielding sleeve assembly, the stator assembly is located outside the shielding sleeve, the rotor assembly moves relative to the stator assembly, bearings are embedded in both the first bearing chamber and the second bearing chamber, rotating shafts are provided at both ends of the rotor assembly, and the rotating shafts are respectively sleeved inside the bearings on both sides, forming the overall internal structure of the motor.

[0034] Specifically, one end of the shielding sleeve is a circular open structure, and the other end is a closed structure of the first bearing chamber. The first bearing is embedded in the first bearing chamber in an interference fit manner for supporting the rotating shaft of the rotor assembly. The inner hole of the rotating shaft and the circular opening of the shielding sleeve are guaranteed to be concentric through press-fitting. The positioning portion of the cover body extends into the circular opening of the shielding sleeve, and the interference fit between the two plays a positioning role, ensuring the coaxiality of the first bearing chamber and the second bearing chamber. After press-fitting, the welding portion of the cover body and the sealing portion of the shielding sleeve are laser welded to further enhance the connection strength. The second bearing is disposed inside the second bearing chamber of the cover body, and the first bearing and the second bearing are jointly used to support the rotor assembly.

[0035] In the third aspect of the present application, a pump assembly is provided. The pump assembly includes the motor provided in any of the above technical solutions. Therefore, this pump assembly also includes all the beneficial effects of the motor provided in any of the above technical solutions. To avoid repetition, they will not be elaborated here.

[0036] In some technical solutions of the present application, optionally, the pump assembly further includes: a housing and a gasket. The housing is disposed on the first side of the shielding sleeve in the axial direction; the gasket is located between the housing and the sealing portion and is arranged around the cover body.

[0037] In this technical solution, by providing a gasket between the housing and the sealing portion, the shielding sleeve assembly is isolated from the circulating medium, improving the sealing of the shielding sleeve assembly. At the same time, the cover body is completely immersed in the circulating medium and does not participate in the sealing, reducing the risk of one installation seal failure and improving the stability of the shielding sleeve assembly.

[0038] Specifically, the fixing and sealing of the shield sleeve assembly are completed by the sealing portion of the shield sleeve. A flat gasket is arranged between the sealing portion of the shield sleeve and the housing for compression sealing, so as to isolate the shield sleeve assembly from the circulating medium. Meanwhile, when the water pump is running, the gasket plays a role of compression buffering between the housing and the sealing portion, ensuring the sealing of the shield sleeve assembly and improving the stability of the shield sleeve assembly.

[0039] Specifically, two small holes are provided at the end face of the second bearing to communicate with the pump assembly. When the water pump is running, the circulating medium enters the cavity inside the shield sleeve through the two small holes at the end face of the second bearing, and the rotor assembly lubricates and dissipates heat at the sliding friction part through the circulating medium.

[0040] Specifically, the housing is also provided with an impeller cavity, and the impeller cavity communicates with the cavity inside the shield through two small holes at the end face of the second bearing, enabling the circulating medium to flow, and enhancing the functions of lubrication and heat dissipation.

[0041] Specifically, the pump assembly further includes an impeller, which is sleeved on the rotating shaft of the rotor assembly and is located inside the impeller cavity. When the water pump is running, the impeller rotates together with the rotating shaft of the rotor assembly, and generates centrifugal force through the rotation of the impeller to drive the flow of the circulating medium inside the impeller cavity, continuously updating the circulating medium and improving the efficiency of lubrication and heat dissipation.

[0042] Some of the additional aspects and advantages of the present application will be given in the following description, some will become obvious from the following description, or will be understood through the practice of the present application. Description of the Drawings

[0043] The above and / or additional aspects and advantages of the present application will become obvious and easy to understand from the description of the embodiments in conjunction with the following drawings, where:

[0044] Figure 1 is a schematic diagram of the pump assembly according to an embodiment of the present application;

[0045] Figure 2 is a schematic diagram of the shield sleeve assembly according to an embodiment of the present application;

[0046] Figure 3 is a schematic diagram of the shield sleeve according to an embodiment of the present application;

[0047] Figure 4 is a schematic diagram of the cover body according to an embodiment of the present application;

[0048] Figure 5 is a schematic diagram of the shield sleeve and the cover body according to an embodiment of the present application;

[0049] Figure 6 is a schematic diagram of the second bearing of the cover body according to an embodiment of the present application;

[0050] Figure 7It is a schematic side view of the shield sleeve and the cover body after assembly according to an embodiment of the present application.

[0051] Reference numerals:

[0052] 100 Shield sleeve assembly, 102 Axis, 200 Shield sleeve, 202 First body, 204 Sealing part, 206 Opening, 208 Cavity, 210 First bearing chamber, 212 First bearing, 300 Cover body, 302 Second body, 304 Positioning part, 306 Welding part, 308 Second bearing chamber, 310 Second bearing, 312 Groove, 400 Motor, 402 Stator assembly, 404 Rotor assembly, 406 Rotating shaft, 500 Pump assembly, 502 Housing, 504 Gasket, 506 Impeller, 508 Impeller cavity, 510 Small hole. Detailed implementation manners

[0053] Embodiments of the present application will be described in detail below. Examples of the embodiments are shown in the accompanying drawings, where the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present application and should not be construed as a limitation to the present application. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in the present application without creative efforts belong to the scope of protection of the present application.

[0054] Refer to Figures 1 to 7 to describe a shield sleeve assembly 100, a motor 400, and a pump assembly 500 according to some embodiments of the present application.

[0055] According to some embodiments of the present application, as Figure 1 and Figure 2 shown, a shield sleeve assembly 100 includes a shield sleeve 200 and a cover body 300. The shield sleeve 200 includes a first body 202 and a sealing part 204. The first body 202 has a cavity 208 with an opening 206 on one side. A first bearing chamber 210 is provided on the side of the first body 202 away from the opening 206. The sealing part 204 is connected to the first body 202, is located on the side of the first body 202 close to the opening 206, and is arranged along the circumferential direction of the first body 202 (in the direction indicated by the arrow C in Figure 3 ); the cover body 300 includes a second body 302, a positioning part 304, and a welding part 306. The second body 302 covers the opening 206. The second body 302 is provided with a second bearing chamber 308. The positioning part 304 is connected to the second body 302 and cooperates with the inner wall of the cavity 208. The welding part 306 is arranged along the outer circumference of the positioning part 304 and is connected to the sealing part 204.

[0056] In this embodiment, the shielding sleeve assembly 100 includes a shielding sleeve 200 and a cover body 300. Through the installation and cooperation between the shielding sleeve 200 and the cover body 300, the coaxiality of the first bearing chamber 210 and the second bearing chamber 308 is ensured.

[0057] In this application, the positioning part 304 of the cover body 300 cooperates with the inner wall of the cavity 208 to realize the positioning of the shielding sleeve 200 and the cover body 300. And the welding part 306 of the cover body 300 is welded to the sealing part 204 of the shielding sleeve 200 to achieve sealing, which strengthens the structure of the shielding sleeve assembly 100, reduces the probability of sealing failure between the shielding sleeve 200 and the cover body 300, and further improves the sealing effect between the shielding sleeve 200 and the cover body 300. And through the welding of the welding part 306 and the sealing part 204, the influence on the matching accuracy of the positioning part 304 and the inner wall of the cavity 208 is reduced, and further the coaxiality of the first bearing chamber 210 and the second bearing chamber 308 is improved.

[0058] Specifically, in this application, the welding part 306 of the cover body 300 is welded to the sealing part 204 of the shielding sleeve 200, making the positions of the shielding sleeve 200 and the cover body 300 more firm. When the water pump starts to work, the influence of vibration on the positional relationship between the shielding sleeve 200 and the cover body 300 is reduced, and further the coaxiality of the first bearing chamber 210 and the second bearing chamber 308 is ensured.

[0059] Specifically, the shielding sleeve 200 of this application includes a first body 202 and a sealing part 204. The first body 202 has a cavity 208 with an opening 206 on one side. A first bearing chamber 210 is provided on the side of the first body 202 far from the opening 206. In this way, one side of the cavity 208 is an opening 206 structure, and the other side is the first bearing chamber 210. When installing the bearing in the first bearing chamber 210, it can be installed through the opening 206 side of the cavity 208, making the installation of the components in the cavity 208 of the shielding sleeve 200 more convenient. In some embodiments of this application, optionally, as Figure 2 and Figure 5 shown, the positioning part 304 is in interference fit with the inner wall of the cavity 208.

[0060] In this embodiment, the positioning part 304 and the inner wall of the cavity 208 are positioned by means of interference press-fitting, so that the positioning part 304 fits tightly against the inner wall of the cavity 208, improving the matching accuracy of the positioning part 304 and the inner wall of the cavity 208, and further ensuring the coaxiality of the first bearing chamber 210 and the second bearing chamber 308, and reducing the risk of rotor jamming or the problem of one-sided bearing wear.

[0061] Specifically, the positioning portion 304 of the cover body 300 is press-fitted with an interference fit on the inner wall of the shielding sleeve 200. The welding portion 306 of the cover body 300 is relatively small and is entirely immersed in the circulating medium and does not participate in the sealing. After the press-fitting is completed, the welding portion 306 of the cover body 300 and the sealing portion 204 of the shielding sleeve 200 are welded to further enhance the connection strength between the two. Through this structural form, the defect of easy jamming of the machine due to the poor coaxiality between the first bearing chamber 210 and the second bearing chamber 308 is avoided, and the sealing performance of the water pump is enhanced.

[0062] In some embodiments of the present application, optionally, as Figure 2 and Figure 3 shown, the first body 202 and the sealing portion 204 are of an integral structure; and / or the second body 302 and the positioning portion 304 are of an integral structure.

[0063] In this embodiment, the first body 202 and the sealing portion 204 are of an integral structure, and the second body 302 and the positioning portion 304 are of an integral structure. Specifically, the shielding sleeve 200 and the cover body 300 are manufactured by integral stamping, which simplifies the assembly process, reduces the production cost, and is conducive to mass production when processing the shielding sleeve 200 and the cover body 300.

[0064] In some embodiments of the present application, optionally, as Figure 2 and Figure 3 shown, the shielding sleeve 200 and / or the cover body 300 are sheet metal parts.

[0065] In this embodiment, the shielding sleeve 200 and / or the cover body 300 are made of sheet metal parts, such as stainless steel, and are of an integral structure, which ensures the strength of the structures of the shielding sleeve 200 and the cover body 300 and strengthens the structural strength of the shielding sleeve assembly 100.

[0066] Specifically, the shielding sleeve 200 and / or the cover body 300 are of an integral structure and are sheet metal parts, and thus can be formed in one step by stamping, which simplifies the assembly process, reduces the production cost, and is conducive to mass production.

[0067] In some embodiments of the present application, optionally, as Figure 2 and Figure 3 shown, the first body 202 is cylindrical and is arranged along the axial direction of the shielding sleeve assembly 100 (in the direction indicated by the arrow D in Figure 1 ); the first bearing chamber 210 is arranged on the first side of the first body 202 in the axial direction, and the opening of the first bearing chamber 210 faces the cavity 208 and is used for installing the first bearing 212.

[0068] In this embodiment, the first body 202 has a cylindrical structure. The first bearing chamber 210 of the first body 202 is installed with the first bearing 212. During installation, it can be installed through the opening 206 of the first body 202, which facilitates the installation process; the opening of the first bearing chamber 210 faces the cavity 208, so that the shielding sleeve assembly 100 is enclosed.

[0069] In some embodiments of the present application, optionally, as Figure 2 and Figure 3 shown, the sealing portion 204 is annular and is located on the outer side of the first body 202. The inner side of the sealing portion 204 is connected to the side of the first body 202 close to the opening 206, and the outer side of the sealing portion 204 extends in a direction away from the axis 102 of the shielding sleeve assembly 100.

[0070] In this embodiment, the first body 202 and the sealing portion 204 are of an integral structure, and the sealing portion 204 is annular. When manufacturing the shielding sleeve 200, it is made by the method of stainless steel stamping, which simplifies the assembly process and is conducive to mass production.

[0071] In some embodiments of the present application, optionally, as Figure 4 and Figure 5 shown, the opening 206 of the second bearing chamber 308 faces the cavity 208 and is used to install the second bearing 310.

[0072] In this embodiment, the opening 206 of the second bearing chamber 308 of the cover body 300 faces the cavity 208. The second bearing chamber 308 is installed with the second bearing 310 and is used to support and position the rotor assembly 404.

[0073] In some embodiments of the present application, optionally, as Figure 4 and Figure 5 shown, the second body 302 is provided with a groove 312 recessed toward the cavity 208. The groove 312 is arranged around the bearing chamber and is located between the positioning portion 304 and the bearing chamber.

[0074] In this embodiment, the second body 302 is provided with a groove 312 recessed toward the cavity 208. The side walls of the groove 312 are respectively the side wall of the second bearing chamber 308 and the positioning portion 304. Through the structural design of the groove 312, the structural strength of the cover body 300 is improved.

[0075] In some embodiments of the present application, optionally, as Figure 2 and Figure 7 shown, at least part of the welding portion 306 is in contact with the sealing portion 204.

[0076] In this embodiment, the welding part 306 and the sealing part 204 are welded so that at least part of the welding part 306 is in contact with the sealing part 204, ensuring the strength and reliability of the structure between the front cover and the shielding sleeve 200. At the same time, since only part of the welding part 306 is in contact with the sealing part 204, the coaxiality of the first bearing chamber 210 and the second bearing chamber 308 is not affected by the cooperation between the welding part 306 and the sealing part 204.

[0077] In some embodiments of the present application, as Figure 1 shown, a motor 400 is provided. The motor 400 includes the shielding sleeve assembly 100 provided in any of the above embodiments. Therefore, the motor 400 also includes all the beneficial effects of the shielding sleeve assembly 100 provided in any of the above embodiments. To avoid repetition, they will not be described herein again.

[0078] In some embodiments of the present application, optionally, as Figure 1 、 Figure 2 and Figure 5 shown, the motor 400 further includes: a stator assembly 402, a rotor assembly 404, a first bearing 212, and a second bearing 310. The stator assembly 402 is disposed in the shielding sleeve 200; the rotor assembly 404 is opposite to the stator assembly 402 and is located in the cavity 208. The rotor assembly 404 includes a rotating shaft 406; the first bearing 212 is embedded in the first bearing chamber 210 and sleeved on the first end of the rotating shaft 406; the second bearing 310 is embedded in the second bearing chamber 308 and sleeved on the second end of the rotating shaft 406.

[0079] In this embodiment, the motor 400 further includes a stator assembly 402, a rotor assembly 404, a first bearing 212, and a second bearing 310. The rotor assembly 404 is located in the cavity 208 of the shielding sleeve assembly 100, the stator assembly 402 is located in the shielding sleeve 200, the rotor assembly 404 moves relative to the stator assembly 402, bearings are embedded in both the first bearing chamber 210 and the second bearing chamber 308, and rotating shafts 406 are provided at both ends of the rotor assembly 404. The rotating shafts 406 are respectively sleeved in the bearings on both sides, forming the overall structure inside the motor 400.

[0080] Specifically, one end of the shielding sleeve 200 is a circular open structure, and the other end is a closed structure of the first bearing chamber 210. The first bearing 212 is press-fitted into the first bearing chamber 210 with interference to support the rotating shaft 406 of the rotor assembly 404. The inner hole of the rotating shaft 406 and the circular opening of the shielding sleeve 200 are guaranteed to be concentric by press-fitting. The positioning portion 304 of the cover body 300 extends into the circular opening of the shielding sleeve 200, and the interference fit between the two plays a positioning role, ensuring the coaxiality of the first bearing chamber 210 and the second bearing chamber 308. After press-fitting, the welding portion 306 of the cover body 300 and the sealing portion 204 of the shielding sleeve 200 are laser welded to further enhance the connection strength. The second bearing chamber 308 of the cover body 300 is internally provided with a second bearing 310, and the first bearing 212 and the second bearing 310 jointly support the rotor assembly 404.

[0081] In some embodiments of the present application, as Figure 1 shown, a pump assembly 500 is provided. The pump assembly 500 includes the motor 400 provided in any of the above embodiments. Therefore, the pump assembly 500 also includes all the beneficial effects of the motor 400 provided in any of the above embodiments. To avoid repetition, it will not be elaborated here.

[0082] In some embodiments of the present application, optionally, as Figure 1 、 Figure 2 、 Figure 5 and Figure 6 shown, the pump assembly 500 further includes: a housing 502 and a gasket 504. The housing 502 is disposed on the first side of the shielding sleeve 200 in the axial direction; the gasket 504 is located between the housing 502 and the sealing portion 204 and is arranged around the cover body 300.

[0083] In this embodiment, by providing a gasket 504 between the housing 502 and the sealing portion 204, the shielding sleeve assembly 100 is isolated from the circulating medium, realizing the sealing of the shielding sleeve assembly 100. Compared with the remaining sealing structures, one sealing structure can be reduced. For example, the positioning portion 304 of the cover body 300 cooperates with the inner wall of the cavity 208 to achieve sealing, and the welding portion 306 of the cover body 300 cooperates with the sealing portion 204 to achieve sealing. This solution requires two sealing structures, while in the present application, by providing a gasket 504 between the housing 502 and the sealing portion 204, one sealing structure realizes the sealing between the housing 502 and the sealing portion 204, improving the sealing stability of the shielding sleeve assembly 100.

[0084] Specifically, the fixing and sealing of the shield sleeve assembly 100 are completed by the sealing portion 204 of the shield sleeve 200. A flat gasket 504 is provided between the sealing portion 204 of the shield sleeve 200 and the housing 502 for compression sealing, isolating the shield sleeve assembly 100 from the circulating medium. Meanwhile, when the water pump is running, the gasket 504 plays a role of compression buffering between the housing 502 and the sealing portion 204, ensuring the sealing of the shield sleeve assembly 100 and improving the stability of the shield sleeve assembly 100.

[0085] Specifically, two small holes 510 are provided at the end face of the second bearing 310 to communicate with the pump assembly 500. When the water pump is running, the circulating medium enters the cavity 208 inside the shield sleeve 200 through the two small holes 510 at the end face of the second bearing 310, and the rotor assembly 404 lubricates and dissipates heat from the sliding friction part through the circulating medium.

[0086] Specifically, two small holes 510 are provided at the end face of the second bearing 310 to communicate with the pump assembly 500. When the water pump is running, the pump assembly 500 and the inside of the shield sleeve 200 are filled with the circulating medium, and the rotor assembly 404 lubricates and dissipates heat from the sliding friction part through the circulating medium.

[0087] Specifically, the housing 502 is further provided with an impeller cavity 508, and the impeller cavity communicates with the cavity 208 inside the shield through the two small holes 510 at the end face of the second bearing 310, enabling the circulating medium to flow, enhancing the lubrication and heat dissipation effects.

[0088] Specifically, the pump assembly 500 further includes an impeller 506. The impeller 506 is sleeved on the rotating shaft 406 of the rotor assembly 404 and is located inside the impeller cavity 508. When the water pump is running, the impeller 506 rotates together with the rotating shaft 406 of the rotor assembly 404, generating centrifugal force through the rotation of the impeller 506 to drive the flow of the circulating medium inside the impeller cavity 508, continuously updating the circulating medium and improving the lubrication and heat dissipation efficiency.

[0089] The terms "first" and "second" in the description and claims of this application may explicitly or implicitly include one or more of such features. In the written description of this application, unless otherwise specified, the meaning of "a plurality" is two or more. Additionally, "and / or" in the description and claims means at least one of the connected objects, and the character " / " generally indicates an "or" relationship between the associated objects before and after.

[0090] In the written description of the present application, it can be understood that the orientation or positional relationship indicated by terms such as "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the technical solution of the present application and simplifying the description of the technical solution of the present application, rather than indicating or implying that the structures, devices, and elements referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, these descriptions should not be construed as limiting the present application.

[0091] In the written description of the present application, it can be understood that unless otherwise clearly specified and limited, the terms "mounted", "connected", and "coupled" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection between the two, or an indirect connection between the two through an intermediate medium, and it can be the communication inside the two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific circumstances.

[0092] In the claims, the description and the drawings of the present application, the term "a plurality" means two or more, unless otherwise clearly defined. The orientation or positional relationship indicated by terms such as "upper" and "lower" is based on the orientation or positional relationship shown in the drawings. It is only for more conveniently describing the present application and making the description process simpler, rather than indicating or implying that the device or element referred to must have the specific orientation described, be constructed and operated in a specific orientation. Therefore, these descriptions should not be construed as limiting the present application; the terms "connected", "mounted", "fixed", etc. should all be understood in a broad sense. For example, "connected" can be a fixed connection between multiple objects, a detachable connection between multiple objects, or an integral connection between multiple objects; it can be a direct connection between multiple objects, or an indirect connection between multiple objects through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to the specific circumstances of the above data.

[0093] In the claims, specification, and drawings of the present application, the descriptions of terms such as "one embodiment", "some embodiments", "specific embodiments", etc. mean that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In the claims, specification, and drawings of the present application, the schematic representations of the above terms do not necessarily refer to the same embodiment or instance. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.

[0094] The foregoing is only the preferred embodiment of the present application and is not intended to limit the present application. For those skilled in the art, the present application can have various changes and modifications. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included within the protection scope of the present application.

Claims

1. A shielding sleeve assembly, characterized in that, Comprising: A shielding sleeve, the shielding sleeve includes a first body and a sealing portion. The first body has a cavity with an opening on one side. On the side of the first body away from the opening, a first bearing chamber is provided. The sealing portion is connected to the first body, located on the side of the first body close to the opening, and arranged circumferentially along the first body. A cover body, the cover body includes a second body, a positioning portion and a welding portion. The second body covers the opening. The second body is provided with a second bearing chamber. The positioning portion is connected to the second body and cooperates with the inner wall of the cavity. The welding portion is arranged along the outer periphery of the positioning portion and is connected to the sealing portion.

2. The shielding sleeve assembly according to claim 1, wherein The positioning portion is in interference fit with the inner wall of the cavity.

3. The shielding sleeve assembly according to claim 1, wherein The first body and the sealing portion are of an integral structure; and / or The second body and the positioning portion are of an integral structure.

4. The shielding sleeve assembly according to claim 1, wherein The shielding sleeve and / or the cover body is a sheet metal part.

5. The shielding sleeve assembly according to claim 1, wherein The first body is cylindrical and arranged axially along the shielding sleeve assembly. The first bearing chamber is provided on the first side of the first body in the axial direction. The opening of the first bearing chamber faces the cavity and is used for installing a first bearing.

6. The shielding sleeve assembly according to claim 5, characterized in that, The sealing portion is annular, located outside the first body. The inner side of the sealing portion is connected to the side of the first body close to the opening. The outer side of the sealing portion extends in a direction away from the axis of the shielding sleeve assembly.

7. The shielding sleeve assembly according to claim 1, wherein The opening of the second bearing chamber faces the cavity and is used for installing a second bearing.

8. The shielding sleeve assembly according to claim 1, characterized in that, The second body is provided with a groove recessed towards the cavity. The groove is arranged around the second bearing chamber and is located between the positioning portion and the second bearing chamber.

9. The shielding sleeve assembly according to any one of claims 1 to 8, characterized in that, At least part of the welding portion is in contact with the sealing portion.

10. A motor, characterized in that, Comprising the shielding sleeve assembly according to any one of claims 1 to 9.

11. The motor according to claim 10, characterized in that, Further comprising: A stator assembly, the stator assembly is arranged on the shielding sleeve. A rotor assembly, the rotor assembly is opposite to the stator assembly and is located in the cavity. The rotor assembly includes a rotating shaft. A first bearing, the first bearing is embedded in the first bearing chamber and sleeved on the first end of the rotating shaft. A second bearing, the second bearing is embedded in the second bearing chamber and sleeved on the second end of the rotating shaft.

12. A pump assembly, characterized in that, Comprising the motor according to claim 10 or 11.

13. The pump assembly according to claim 12, wherein Further comprising: A housing, the housing is arranged on the first side of the shielding sleeve in the axial direction. A gasket, the gasket is located between the housing and the sealing portion and is arranged around the cover body.

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