Underwater sand blocking prevention motor, underwater propeller and underwater cleaning robot

Abstract

The invention relates to an underwater sand blocking prevention motor, an underwater propeller and an underwater cleaning robot, the underwater sand blocking prevention motor comprises a stator, a rotor device, a sand prevention bearing and a sand prevention cover, and the stator is provided with an assembly cavity; the rotor device comprises a rotating shaft and a rotor assembly, one end of the rotating shaft is inserted into the assembly cavity, and the other end is connected with the rotor assembly; the sand-proof bearing is arranged in the assembly cavity and sleeves the rotating shaft; the sand-proof cover is arranged at the end, away from the rotor assembly, of the stator and corresponds to the assembly cavity so as to seal the end of the assembly cavity. In this way, by arranging the sand-proof bearing, the sand-proof performance of the sand-proof bearing can be improved, and the service life of the sand-proof bearing is prolonged; and meanwhile, the end part of the assembly cavity can be sealed by arranging the sand-proof cover, so that sustainable flowing water flow cannot be formed in the assembly cavity, the amount of silt accumulated in each part in the assembly cavity can be greatly reduced, and the purposes of reducing the silt accumulation and prolonging the service life of the underwater sand-blocking-preventing motor are achieved.

Description

Technical Field

[0001] The present application relates to the field of underwater cleaning equipment, and in particular to an underwater anti-jamming motor, an underwater propeller and an underwater cleaning robot. Background Art

[0002] A pool cleaning robot is a type of underwater cleaning robot that can be used to clean a pool. When the pool cleaning robot is working, the water sucked in from the water inlet is filtered and then discharged from the water outlet to clean the water in the pool. Since the water in the pool usually contains dirt such as mud and sand, in the related art, a large amount of dirt such as mud and sand will accumulate in the pump motor of the pool cleaning robot after working for a long time, which will affect the service life of the pump motor. Summary of the invention

[0003] The present application provides an underwater anti-sand jamming motor, an underwater propeller and an underwater cleaning robot to achieve the purpose of reducing sediment accumulation and increasing service life.

[0004] In one aspect, the present application provides an underwater anti-jamming motor, comprising:

[0005] A stator, wherein the stator is provided with an assembly cavity;

[0006] A rotor device, the rotor device comprising a rotating shaft and a rotor assembly, one end of the rotating shaft is inserted into the assembly cavity, and the other end is connected to the rotor assembly;

[0007] An anti-sand bearing, the anti-sand bearing is arranged in the assembly cavity and sleeved on the rotating shaft;

[0008] A sand-proof cover is arranged at an end of the stator away from the rotor assembly, and the sand-proof cover is arranged corresponding to the assembly cavity to seal the end of the assembly cavity.

[0009] Furthermore, the anti-sand bearing comprises:

[0010] A bearing body, the bearing body comprising an inner steel ring and an outer steel ring, the outer steel ring and the inner steel ring are coaxially arranged, and two annular grooves are formed on both sides of the bearing body;

[0011] The sealing cover is annular and is arranged in the annular groove; the inner ring side of the sealing cover is tightly abutted against the inner steel ring, and the outer ring side of the sealing cover is tightly abutted against the outer steel ring.

[0012] Furthermore, the sealing cover comprises:

[0013] A cover body, which is annular and disposed in the annular groove;

[0014] A flexible member, the flexible member covering a side of the cover body away from the bottom of the annular groove;

[0015] The flexible member extends toward the inner ring side of the cover body to cover the inner ring side of the cover body, forming an inner abutment portion; the inner abutment portion is tightly abutted against the inner steel ring, and the inner abutment portion is deformed under the pressure of the cover body and the inner steel ring;

[0016] The flexible member extends toward the outer ring side of the cover body to cover the outer ring side of the cover body, forming an outer abutment portion; the outer abutment portion tightly abuts against the outer steel ring, and the outer abutment portion is deformed under the extrusion of the cover body and the outer steel ring.

[0017] Furthermore, the material of the flexible member is rubber; and the material of the cover body is stainless steel.

[0018] Furthermore, the rotor assembly comprises:

[0019] An end cover, wherein the rotating shaft is inserted into the end cover;

[0020] A magnetic yoke, the magnetic yoke is connected to the end cover and extends along the circumference of the end cover to form an annular structure;

[0021] A rotor core, the rotor core is connected to the end cover and is located on the inner side of the yoke; a plurality of the rotor cores are evenly spaced and distributed along the circumference of the end cover;

[0022] A rotor winding, the rotor winding is located on a side of the rotor core away from the magnetic yoke, and the rotor winding is sleeved on an outer peripheral wall of the stator;

[0023] A protection ring is located between the rotor core and the rotor winding.

[0024] Furthermore, the number of the sand-proof bearings is at least two, at least one of the sand-proof bearings is arranged at a position of the assembly cavity close to the end cover; at least one of the sand-proof bearings is arranged at a position of the assembly cavity close to the sand-proof cover.

[0025] Furthermore, a buffer pad is provided between the end cover and the anti-sand bearing, and the buffer pad is sleeved on the rotating shaft;

[0026] And / or, a gasket is provided on a side of the sand-proof bearing facing the sand-proof cover, and the gasket is sleeved on the rotating shaft.

[0027] Furthermore, waterproof glue is provided at the rotor winding to form a waterproof glue structure.

[0028] On the other hand, the present application also provides an underwater propeller, comprising:

[0029] Underwater anti-kasha motor as described above;

[0030] A propeller, wherein the propeller is sleeved on a rotor assembly of the underwater anti-jamming motor and connected to the rotor assembly;

[0031] A propeller housing, the propeller housing comprising a connecting cover and a flow guide cover, the flow guide cover having a flow guide channel, the connecting cover being located in the flow guide channel and connected to the flow guide cover via a connecting arm;

[0032] Wherein, the connection cover is sleeved on the stator and connected to the stator; wherein the anti-sand cover of the underwater anti-sand-jamming motor is clamped between the connection cover and the stator.

[0033] On the other hand, the present application also provides an underwater cleaning robot, comprising:

[0034] A cleaning robot body, wherein the cleaning robot body has a water outlet;

[0035] As described above, the underwater propeller is arranged in the cleaning robot body and is arranged corresponding to the water outlet; wherein the guide channel of the underwater propeller is connected to the water outlet.

[0036] The above technical solution provided by the embodiment of the present application has the following advantages compared with the prior art:

[0037] The underwater anti-sand jamming motor provided in the embodiment of the present application includes a stator, a rotor device, an anti-sand bearing and an anti-sand cover, wherein the stator is provided with an assembly cavity; the rotor device includes a rotating shaft and a rotor assembly, one end of the rotating shaft is inserted into the assembly cavity, and the other end is connected to the rotor assembly; the anti-sand bearing is provided in the assembly cavity and sleeved on the rotating shaft; the anti-sand cover is provided at one end of the stator away from the rotor assembly, and the anti-sand cover is provided corresponding to the assembly cavity to seal the end of the assembly cavity. In this way, the present application can improve the anti-sand performance of the anti-sand bearing itself and improve the service life of the anti-sand bearing by providing the anti-sand bearing; at the same time, by providing the anti-sand cover, the end of the assembly cavity can be sealed, so that no sustainable flowing water flow is formed in the assembly cavity, and the amount of sediment accumulated in each component in the assembly cavity can be greatly reduced, thereby achieving the purpose of reducing sediment accumulation and improving the service life of the underwater anti-sand jamming motor. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the invention and, together with the description, serve to explain the principles of the invention.

[0039] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0040] One or more embodiments are exemplarily described by pictures in the corresponding drawings, and these exemplified descriptions do not constitute limitations on the embodiments. Elements with the same reference numerals in the drawings represent similar elements, and unless otherwise stated, the figures in the drawings do not constitute proportional limitations.

[0041] Figure 1 A schematic diagram of the structure of an underwater cleaning robot provided in an embodiment of the present application;

[0042] Figure 2 A schematic diagram of the structure of an underwater thruster provided in an embodiment of the present application;

[0043] Figure 3 for Figure 2 A cross-sectional view of

[0044] Figure 4 for Figure 3 A schematic diagram of the structure of the bearing body of the medium sand-proof bearing;

[0045] Figure 5 for Figure 3 A schematic diagram of the structure of the sealing cover of the middle anti-sand bearing;

[0046] Figure 6 for Figure 5 A partial cross-sectional view of

[0047] Figure 7 for Figure 2 Schematic diagram of the decomposition structure.

[0048] Description of reference numerals:

[0049] 1. stator; 1a. assembly cavity;

[0050] 2. rotor device; 21. rotating shaft; 22. rotor assembly; 221. end cover; 222. yoke; 223. rotor core; 224. rotor winding; 225. protection ring;

[0051] 3. Anti-sand bearing; 31. Bearing body; 31a. Annular groove; 311. Inner steel ring; 312. Outer steel ring; 32. Sealing cover; 321. Cover body; 322. Flexible member; 3221. Inner abutment; 3222. Outer abutment;

[0052] 4. Anti-sand cover; 5. Buffer pad; 6. Gasket;

[0053] 200, underwater propeller; 210, propeller; 220, propeller housing; 230, connection cover; 240, guide cover; 250, guide channel; 260, connecting arm; 270, wire hole;

[0054] 300. Underwater cleaning robot; 310. Cleaning robot body; 320. Water outlet. DETAILED DESCRIPTION

[0055] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application.

[0056] The disclosure below provides many different embodiments or examples to implement different structures of the present invention. In order to simplify the disclosure of the present invention, the parts and settings of specific examples are described below. Of course, they are only examples, and the purpose is not to limit the present invention. In addition, the present invention can repeat reference numbers and / or letters in different examples. This repetition is for the purpose of simplification and clarity, and does not itself indicate the relationship between the various embodiments and / or settings discussed.

[0057] For ease of description, spatial relative terms may be used herein to describe the relative positional relationship or movement of one element or feature relative to another element or feature as shown in the figure, such as "inside", "outside", "inner side", "outer side", "below", "below", "above", "above", "front", "back", etc. Such spatial relative terms are intended to include different orientations of the device in use or operation in addition to the orientation depicted in the figure. For example, if the device in the figure undergoes a position flip or a posture change or a motion state change, then these directional indications also change accordingly, for example: an element described as "below other elements or features" or "below other elements or features" will subsequently be oriented as "above other elements or features" or "above other elements or features". Therefore, the example term "below..." may include both upper and lower orientations. The device may be otherwise oriented (rotated 90 degrees or in other directions) and the spatial relative descriptors used herein are interpreted accordingly.

[0058] like Figure 1As shown, the present application provides an underwater cleaning robot 300, including a cleaning robot body 310 and an underwater propeller 200, wherein the cleaning robot body 310 includes a housing, a filtering device, a power module, a control module, a power module, and the like.

[0059] The housing is provided with a water inlet and a water outlet 320. The filter device is arranged between the water inlet and the water outlet 320, and is used to filter the water flowing through. The filter device can be in the form of a filter basket, or can also be in the form of a filter element. The core component of the filter device is a filter element such as filter paper or a coarse yarn mesh. The filter device is usually arranged as a detachable module to facilitate the operation of cleaning the filter screen, replacing the filter screen, or replacing the filter element.

[0060] like Figure 1 As shown, the underwater propeller 200 is disposed in the cleaning robot body 310 and is disposed corresponding to the water outlet 320; wherein the guide channel 250 of the underwater propeller 200 is connected to the water outlet 320. The underwater propeller 200 is used to drive the water flow to be sucked in from the water inlet and filtered by the filtering device, and then the clean water flow is discharged from the water outlet 320.

[0061] The power module includes a drive motor, a transmission mechanism, rollers and tracks. In some machines, the underwater propeller 200 can also assist the movement or steering of the machine body by fluid injection.

[0062] The control module and the power module are arranged in a sealed control box. The power module can be wired or wireless.

[0063] like Figure 2 and Figure 3 As shown, the present application provides an underwater propeller 200, including an underwater anti-jamming motor, a propeller 210 and a propeller housing 220, including a cleaning robot body 310 and an underwater propeller 200, wherein the propeller 210 is sleeved on the rotor assembly 22 of the underwater anti-jamming motor and connected to the rotor assembly 22; the propeller housing 220 includes a connection cover 230 and a flow guide cover 240, the flow guide cover 240 has a flow guide channel 250, the connection cover 230 is located in the flow guide channel 250, and is connected to the flow guide cover 240 through a connecting arm 260; the flow guide cover 240 is connected to the housing of the underwater cleaning robot 300 through a fastener. The connection cover 230 is sleeved on the stator 1 and connected to the stator 1; wherein the anti-sand cover 4 of the underwater anti-jamming motor is sandwiched between the connection cover 230 and the stator 1. The propeller housing 220 is also provided with a wire hole 270 for the wire to pass through.

[0064] When the rotor assembly 22 rotates, it drives the propeller 210 to rotate, and the rotation of the propeller 210 drives the water flow to propel. The propeller housing 220 connects and fixes the underwater propeller 200 to the shell of the underwater cleaning robot 300, and guides the direction of the water flow, guiding the water flow to the water outlet 320 to be discharged from the water outlet 320.

[0065] The specific structure of the underwater anti-jamming motor refers to the following embodiments. Since the underwater propeller 200 adopts all the technical solutions of all the following embodiments, it has at least all the beneficial effects brought by the technical solutions of the following embodiments, which will not be described one by one here.

[0066] Figures 3 to 7 An underwater anti-sand-jamming motor is provided in an embodiment of the present application. The underwater anti-sand-jamming motor includes a stator 1, a rotor device 2, an anti-sand bearing 3 and an anti-sand cover 4. The stator 1 is provided with an assembly cavity 1a; the rotor device 2 includes a rotating shaft 21 and a rotor assembly 22, one end of the rotating shaft 21 is inserted into the assembly cavity 1a, and the other end is connected to the rotor assembly 22; the anti-sand bearing 3 is provided in the assembly cavity 1a and is sleeved on the rotating shaft 21; the anti-sand cover 4 is provided at one end of the stator 1 away from the rotor assembly 22, and the anti-sand cover 4 is provided corresponding to the assembly cavity 1a to seal the end of the assembly cavity 1a.

[0067] In the related art, in the technical solution without the anti-sand bearing 3 and the anti-sand cover 4, when the motor is in an underwater environment, the water with mud and sand will form a continuous water flow in the motor, and the water flow mode is: along the inner cavity of the assembly cavity 1a to the inside of the rotor device 2 and then flow out from the gap between the rotor device 2 and the stator 1, or, along the gap between the rotor device 2 and the stator 1, flow into the inside of the rotor device 2 and then flow into the inner cavity of the assembly cavity 1a, and flow out from the end of the rotor. Regardless of the water flow mode, it is a continuous water flow in the motor. The continuous flow of the continuous water flow with mud and sand will cause more and more mud and sand to be deposited in the motor, affecting the service life of the motor.

[0068] The present application can improve the sand-proof performance of the sand-proof bearing 3 itself and increase the service life of the sand-proof bearing 3 by providing the sand-proof bearing 3; at the same time, the end of the assembly cavity 1a can be sealed by providing the sand-proof cover 4, so that a sustainable flowing water flow will not be formed in the assembly cavity 1a, and the amount of sediment accumulated in each component in the assembly cavity 1a can be greatly reduced, thereby achieving the purpose of reducing sediment accumulation and increasing the service life of the underwater anti-sand jamming motor.

[0069] like Figures 3 to 7As shown, in the technical solution of this embodiment, the sand-proof bearing 3 includes a bearing body 31 and a sealing cover 32. The bearing body 31 includes an inner steel ring 311 and an outer steel ring 312. The outer steel ring 312 is coaxially arranged with the inner steel ring 311, and two annular grooves 31a are formed on both sides of the bearing body 31 respectively; the sealing cover 32 is annular, and the sealing cover 32 is arranged in the annular groove 31a; the inner ring side of the sealing cover 32 is tightly abutted against the inner steel ring 311, and the outer ring side of the sealing cover 32 is tightly abutted against the outer steel ring 312.

[0070] It can be understood that by setting the inner ring side of the sealing cover 32 to be in close contact with the inner steel ring 311 of the bearing body 31, there is no gap between the inner ring side of the sealing cover 32 and the inner steel ring 311; at the same time, the outer ring side of the sealing cover 32 is set to be in close contact with the outer steel ring of the bearing body 31, so that there is no gap between the outer ring side of the sealing cover 32 and the outer steel ring 312; in this way, water can be prevented from entering the bearing body 31 through the gap between the sealing cover 32 and the bearing body 31, and dirt such as mud and sand can be avoided from accumulating in the bearing body 31 to cause jamming, thereby ensuring the life of the grease and balls in the bearing body 31, thereby improving the service life of the anti-sand bearing 3.

[0071] like Figure 5 and Figure 6 As shown, in the technical scheme of this embodiment, the sealing cover 32 includes a cover body 321 and a flexible member 322, the cover body 321 is annular and is arranged in the annular groove 31a; the flexible member 322 is covered on the side of the cover body 321 away from the bottom of the annular groove 31a; wherein the flexible member 322 extends toward the inner ring side of the cover body 321 to the inner ring side of the cover body 321, forming an inner abutment portion 3221; the inner abutment portion 3221 is tightly abutted against the inner steel ring 311, and the inner abutment portion 3221 is deformed under the extrusion of the cover body 321 and the inner steel ring 311; the flexible member 322 extends toward the outer ring side of the cover body 321 to the outer ring side of the cover body 321, forming an outer abutment portion 3222; the flexible member 322 is deformable and has a certain elasticity, and can play a role of tight sealing when deformed by extrusion. The outer abutment portion 3222 is tightly abutted against the outer steel ring 312, and the outer abutment portion 3222 is deformed under the pressure of the cover body 321 and the outer steel ring 312. The flexible member 322 is deformable and has a certain elasticity, and can play a role of tight sealing when deformed by pressure.

[0072] In this embodiment, the flexible member 322 is coated on the side of the cover body 321 away from the bottom of the annular groove 31 a and extends to both inside and outside, which can simplify the processing and reduce the processing difficulty.

[0073] It is understandable that the cover body 321 itself has a certain hardness and rigidity, which can meet the needs of the waterproof bearing itself, and can also provide support for the flexible member 322, ensure the position stability of the flexible member 322, and improve the sealing stability.

[0074] like Figure 6 As shown, in this embodiment, the side of the cover 321 facing the bottom of the annular groove 31a is mostly not covered with the flexible member 322. This design is because the bearing body 31 is provided with a ball, and the side of the cover 321 facing the bottom of the annular groove 31a is actually facing the ball, and the absence of the flexible member 322 can ensure the smooth operation of the ball.

[0075] In the technical solution of this embodiment, the material of the flexible member 322 is rubber, and the material of the cover body 321 is stainless steel. Thus, the use of rubber and stainless steel not only meets the functional requirements, but also has the effects of low cost and simple processing.

[0076] Compared with the prior art, the sand-proof bearing 3 in this embodiment does not adopt the bearing sealed by the flexible member 322. Since the rubber and the inner and outer steel rings 312 are softly squeezed, impurities and foreign matter in the water are not easy to enter the interior of the bearing body 31, thereby ensuring the service life of the grease and the ball.

[0077] Test objects: Multiple motors 1: equipped with sand-proof bearings 3; Multiple motors 2: bearings not sealed with flexible member 322 (only with stainless steel dust cover arranged in annular groove 31a);

[0078] Test environment: test pool;

[0079] During the test process, the device is put into the test water tank for operation;

[0080] Test results: After the test, the anti-sand bearing 3 has a good appearance, smooth forward and reverse directions, and a dry and clean interior without foreign matter after working for 1500 hours. However, the bearings in the prior art that do not use the flexible member 322 seal have no bearing jams from 0 to 800 hours, and the defective rate due to bearing blockage and jamming is 6.5% from 800 to 1000 hours.

[0081] like Figure 3 and Figure 7As shown, in the technical solution of this embodiment, the rotor assembly 22 includes an end cover 221, a yoke 222, a rotor core 223, a rotor winding 224 and a protective ring 225, and the rotating shaft 21 is inserted into the end cover 221; the yoke 222 is connected to the end cover 221 and extends along the circumference of the end cover 221 to form an annular structure; the rotor core 223 is connected to the end cover 221 and is located on the inner side of the yoke 222; a plurality of rotor cores 223 are evenly spaced along the circumference of the end cover 221; the rotor winding 224 is located on the side of the rotor core 223 away from the yoke 222, and the rotor winding 224 is sleeved on the outer peripheral wall of the stator 1; the protective ring 225 is located between the rotor core 223 and the rotor winding 224. Among them, the rotor core 223 is a magnet, and the rotor winding is a coil. In this way, after power is turned on, the rotor assembly 22 rotates under the action of the magnetic field.

[0082] like Figure 3 and Figure 7 As shown, in the technical solution of this embodiment, the number of sand-proof bearings 3 is at least two, at least one sand-proof bearing 3 is arranged at a position of the assembly cavity 1a close to the end cover 221; at least one sand-proof bearing 3 is arranged at a position of the assembly cavity 1a close to the sand-proof cover 4.

[0083] It can be understood that the anti-sand bearings 3 are respectively arranged at the position of the assembly cavity 1a close to the end cover 221 and the position close to the anti-sand cover 4, which can improve the rotation stability.

[0084] like Figure 3 and Figure 7 As shown, in the technical solution of this embodiment, a buffer pad 5 is provided between the end cover 221 and the anti-sand bearing 3 , and the buffer pad 5 is sleeved on the rotating shaft 21 .

[0085] It is understandable that the buffer pad 5 plays a role of buffering protection on the one hand, and on the other hand, can also play a sealing role on the connection between the anti-sand bearing 3 and the rotating shaft 21.

[0086] like Figure 3 and Figure 7 As shown, in the technical solution of this embodiment, a gasket 6 is provided on the side of the sand-proof bearing 3 facing the sand-proof cover 4, and the gasket 6 is sleeved on the rotating shaft 21 to seal the connection between the sand-proof bearing 3 and the rotating shaft 21.

[0087] In the technical solution of this embodiment, waterproof glue is provided at the rotor winding 224 to form a waterproof glue structure.

[0088] In order to achieve the effect of sandproofing, the existing waterproof motor usually installs a dynamic sealing structure at the output shaft of the motor to achieve waterproofing of the entire waterproof motor. However, when the waterproof motor adopts this method, although the heat dissipation is good and it can operate normally when running underwater, it will cause the dynamic sealing structure to burn quickly when running in the air.

[0089] With the motor of the present application, waterproof glue is set on the rotor winding 224. The waterproof glue can cover the rotor winding or be poured into the rotor winding 224. The waterproof glue structure can overflow toward the stator, which can provide waterproof protection for the rotor winding. The present application not only achieves the effect of preventing sand, but also, when the motor rotates in the air (in the case of operating errors or abnormalities), it will not burn when running in the air. This solution is simpler and safer.

[0090] It should be understood that the terms used herein are only for the purpose of describing specific example embodiments and are not intended to be limiting. Unless the context clearly indicates otherwise, the singular forms "one", "an" and "said" as used herein may also be meant to include plural forms. The terms "include", "comprise", "contain", and "have" are inclusive, and therefore specify the existence of stated features, steps, operations, elements and / or parts, but do not exclude the existence or addition of one or more other features, steps, operations, elements, parts, and / or combinations thereof. The method steps, processes, and operations described herein are not interpreted as necessarily requiring them to be performed in the specific order described or illustrated, unless the execution order is clearly indicated. It should also be understood that additional or alternative steps may be used.

[0091] Although the terms first, second, third, etc. can be used in the text to describe multiple elements, components, regions, layers and / or sections, these elements, components, regions, layers and / or sections should not be limited by these terms. These terms can only be used to distinguish an element, component, region, layer or section from another region, layer or section. Unless the context clearly indicates, terms such as "first", "second" and other numerical terms do not imply order or sequence when used in the text. Therefore, the first element, component, region, layer or section discussed below can be referred to as the second element, component, region, layer or section without departing from the teaching of the example embodiments.

[0092] The foregoing is merely a specific embodiment of the present invention, which enables those skilled in the art to understand or implement the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but rather to the widest scope consistent with the principles and novel features claimed herein.

Claims

1. An underwater anti-jamming motor, characterized in that: include: A stator (1), wherein the stator (1) is provided with an assembly cavity (1a); A rotor device (2), the rotor device (2) comprising a rotating shaft (21) and a rotor assembly (22), one end of the rotating shaft (21) being inserted into the assembly cavity (1a), and the other end being connected to the rotor assembly (22); An anti-sand bearing (3), the anti-sand bearing (3) being arranged in the assembly cavity (1a) and sleeved on the rotating shaft (21); A sand-proof cover (4) is provided at an end of the stator (1) away from the rotor assembly (22), and the sand-proof cover (4) is provided corresponding to the assembly cavity (1a) to seal the end of the assembly cavity (1a).

2. The underwater anti-jamming motor according to claim 1, characterized in that: The anti-sand bearing (3) comprises: A bearing body (31), the bearing body (31) comprising an inner steel ring (311) and an outer steel ring (312), the outer steel ring (312) being coaxially arranged with the inner steel ring (311), and two annular grooves (31a) are respectively formed on both sides of the bearing body (31); A sealing cover (32), the sealing cover (32) is annular and is disposed in the annular groove (31a); the inner ring side of the sealing cover (32) is in close contact with the inner steel ring (311), and the outer ring side of the sealing cover (32) is in close contact with the outer steel ring (312).

3. The underwater anti-jamming motor according to claim 2, characterized in that: The sealing cover (32) comprises: A cover body (321), the cover body (321) is annular and is disposed in the annular groove (31a); A flexible member (322), the flexible member (322) covering a side of the cover body (321) away from the bottom of the annular groove (31a); The flexible member (322) extends toward the inner ring side of the cover body (321) to cover the inner ring side of the cover body (321), thereby forming an inner abutting portion (3221); the inner abutting portion (3221) is tightly abutted against the inner steel ring (311), and the inner abutting portion (3221) is deformed under the pressure of the cover body (321) and the inner steel ring (311); The flexible member (322) extends toward the outer ring side of the cover body (321) to cover the outer ring side of the cover body (321), thereby forming an outer abutment portion (3222); the outer abutment portion (3222) is tightly abutted against the outer steel ring (312), and the outer abutment portion (3222) is deformed under the extrusion of the cover body (321) and the outer steel ring (312).

4. The underwater anti-jamming motor according to claim 3, characterized in that: The material of the flexible member (322) is rubber; the material of the cover body (321) is stainless steel.

5. The underwater anti-jamming motor according to claim 1, characterized in that: The rotor assembly (22) comprises: An end cover (221), wherein the rotating shaft (21) is inserted into the end cover (221); A magnetic yoke (222), the magnetic yoke (222) being connected to the end cover (221) and extending along the circumference of the end cover (221) to form an annular structure; a rotor core (223), the rotor core (223) being connected to the end cover (221) and being located on the inner side of the yoke (222); a plurality of the rotor cores (223) being evenly spaced and distributed along the circumference of the end cover (221); a rotor winding (224), the rotor winding (224) being located on a side of the rotor core (223) away from the magnetic yoke (222), and the rotor winding (224) being sleeved on an outer peripheral wall of the stator (1); A protection ring (225), wherein the protection ring (225) is located between the rotor core (223) and the rotor winding (224).

6. The underwater anti-jamming motor according to claim 5, characterized in that: The number of the sand-proof bearings (3) is at least two, and at least one of the sand-proof bearings (3) is arranged at a position of the assembly cavity (1a) close to the end cover (221); and at least one of the sand-proof bearings (3) is arranged at a position of the assembly cavity (1a) close to the sand-proof cover (4).

7. The underwater anti-jamming motor according to claim 6, characterized in that: A buffer pad (5) is provided between the end cover (221) and the anti-sand bearing (3), and the buffer pad (5) is sleeved on the rotating shaft (21); And / or, a gasket (6) is provided on the side of the sand-proof bearing (3) facing the sand-proof cover (4), and the gasket (6) is sleeved on the rotating shaft (21).

8. The underwater anti-jamming motor according to claim 5, characterized in that: The rotor winding is provided with waterproof glue to form a waterproof glue structure.

9. An underwater propeller (200), characterized in that: include: The underwater anti-jamming motor according to any one of claims 1 to 8; A propeller (210), wherein the propeller (210) is sleeved on a rotor assembly (22) of the underwater anti-jamming motor and connected to the rotor assembly (22); A propeller housing (220), the propeller housing (220) comprising a connection cover (230) and a flow guide cover (240), the flow guide cover (240) having a flow guide channel (250), the connection cover (230) being located in the flow guide channel (250) and connected to the flow guide cover (240) via a connection arm (260); The connection cover (230) is sleeved on the stator (1) and connected to the stator (1); the anti-sand cover (4) of the underwater anti-sand motor is sandwiched between the connection cover (230) and the stator (1).

10. An underwater cleaning robot (300), characterized in that: include: A cleaning robot body (310), wherein the cleaning robot body (310) has a water outlet (320); The underwater propeller (200) according to claim 9, wherein the underwater propeller (200) is arranged in the cleaning robot body (310) and is arranged corresponding to the water outlet (320); wherein, The flow guide channel (250) of the underwater propeller (200) is in communication with the water outlet (320).

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