Spherical rotor pump and flushing device

Abstract

The utility model discloses a spherical rotor pump and a flushing device. A pump shell of the spherical rotor pump is provided with a mounting cavity. The first rotating body component is rotationally connected to the pump shell and located in the mounting cavity. The second rotating body component is rotationally connected to the pump shell and located in the mounting cavity, the first rotating body component and the second rotating body component are connected to form a spherical body, the spherical body and the inner wall face of the pump shell define a volume change cavity, and the first rotating body component comprises a first abutting face arranged away from the second rotating body component; the second swivel member includes a second abutment surface disposed away from the first swivel member. A limiting groove is formed in the inner wall face of the pump shell, the wear-resisting component is arranged in the limiting groove and abuts against the first abutting face and the inner wall face of the pump shell, and / or the wear-resisting component is arranged between the second abutting face and the inner wall face of the pump shell and abuts against the second abutting face and the inner wall face of the pump shell. According to the technical scheme, the situation that the internal structure of the spherical rotor pump is loosened can be reduced, and therefore the smoothness of follow-up spherical body rotation is guaranteed.

Description

Technical Field

[0001] The present application relates to the technical field of variable capacity pumps, and in particular to a spherical rotor pump and a flushing device. Background Art

[0002] The spherical rotor pump is a positive displacement pump with a unique structure. When the spherical rotor rotates together with the active shaft and the passive shaft that intersect at a certain angle, the cavity opens and closes regularly, thereby completing the function of conveying liquid.

[0003] In the related art, the rotor of the existing spherical rotor pump abuts and rubs against the casing when rotating. Over time, the pump casing and the rotor will wear out. The worn rotor is prone to shifting due to water pressure or gravity during rotation, affecting the smoothness of the subsequent rotation of the spherical body of the rotor. Utility Model Content

[0004] The embodiments of the present application provide a spherical rotor pump and a flushing device, which can reduce the occurrence of loosening of the internal structure of the spherical rotor pump, thereby ensuring the smoothness of the subsequent rotation of the spherical body.

[0005] In a first aspect, an embodiment of the present application provides a spherical rotor pump, the spherical rotor pump comprising:

[0006] A pump housing having a mounting cavity;

[0007] A first rotating member, the first rotating member is rotatably connected to the pump housing and is located in the installation cavity;

[0008] a second rotating member, the second rotating member is rotatably connected to the pump housing and is located in the installation cavity, the first rotating member and the second rotating member are connected to form a spherical body, the spherical body and the inner wall surface of the pump housing enclose a variable volume cavity, the first rotating member includes a first abutting surface disposed away from the second rotating member, and the second rotating member includes a second abutting surface disposed away from the first rotating member;

[0009] A wear-resistant component, wherein the inner wall surface of the pump housing is provided with a limiting groove, the wear-resistant component is arranged in the limiting groove, and abuts against the first abutting surface and the inner wall surface of the pump housing respectively, and / or the wear-resistant component is arranged between the second abutting surface and the inner wall surface of the pump housing, and abuts against the second abutting surface and the inner wall surface of the pump housing respectively.

[0010] In some embodiments, the wear-resistant component includes a first wear-resistant sub-component, and the surface of the pump casing opposite to the first abutment surface is recessed to form a limiting groove. The first wear-resistant sub-component is at least partially disposed in the limiting groove and respectively abuts against the bottom of the limiting groove and the first abutment surface.

[0011] In some embodiments, the side wall of the first wear-resistant sub-component circumferentially abuts against the groove side wall of the limiting groove.

[0012] In some embodiments, the thickness of the first wear-resistant sub-component is greater than or equal to the groove depth of the limiting groove;

[0013] Alternatively, the thickness of the first wear-resistant sub-component is smaller than the groove depth of the limiting groove, and the side wall of the portion of the first rotating member located in the limiting groove is spaced apart from the groove wall of the limiting groove.

[0014] In some embodiments, along the axial direction of the first rotating member, the projection of the first abutment surface is located inside the first wear-resistant sub-component;

[0015] And / or, the surface of the first wear-resistant sub-component facing away from the pump housing and the first abutting surface are both arranged in a plane;

[0016] And / or, the first wear-resistant sub-component is a sheet-like structure.

[0017] In some embodiments, the pump housing is provided with a stopper on the bottom wall of the limiting groove, the side wall surface of the first wear-resistant sub-component is concave to form a limiting notch, and the stopper is inserted into the limiting notch.

[0018] In some embodiments, there are two stop parts, which are symmetrically arranged, and the first wear-resistant sub-component is correspondingly provided with two limiting notches, and one stop part is inserted into one limiting notch.

[0019] In some embodiments, the first wear-resistant sub-component is sleeved on one end of the first rotating member where the first abutting surface is provided.

[0020] In some embodiments, the first rotating member includes a first shaft and a first hemispherical body, the first hemispherical body is connected to the second rotating member to form the spherical body, and the first hemispherical body is provided with the first abutting surface;

[0021] The first shaft is connected to a side of the first hemisphere where the first abutment surface is provided, the surface of the pump casing opposite to the first abutment surface is provided with the limiting groove, a first through hole is provided at the bottom of the limiting groove, and the first shaft passes through the limiting groove and the first through hole to be rotatably connected to the pump casing.

[0022] In some embodiments, the wear-resistant component includes a first wear-resistant sub-component, which is arranged between the first abutment surface and the inner wall surface of the pump casing, and abuts against the first abutment surface and the inner wall surface of the pump casing respectively. The first wear-resistant sub-component is provided with a second through hole, and the first shaft body passes through the second through hole and the first through hole in sequence. The aperture of the second through hole is larger than the diameter of the first shaft body, and the outer periphery of the first shaft body is spaced apart from the hole wall of the second through hole.

[0023] In some embodiments, the second rotating member comprises a second shaft body and a second hemisphere body connected to each other, the second shaft body is rotatably connected to the pump housing, the first rotating member and the second hemisphere body cooperate to form the spherical body, the first rotating member is provided with the first abutting surface on a side away from the second hemisphere body, and the second shaft body is provided with the second abutting surface on a side away from the second hemisphere body;

[0024] The wear-resistant component further includes a second wear-resistant sub-component, a surface of the pump housing opposite to the second abutting surface is concavely provided with a first fixing groove, and the second wear-resistant sub-component is arranged in the first fixing groove;

[0025] And / or, the second abutting surface is concavely formed to form a second fixing groove, and the second wear-resistant sub-component is arranged in the second fixing groove.

[0026] In some embodiments, a surface of the pump housing facing the second abutting surface and / or the second abutting surface is concavely provided with a fixing groove, and the second wear-resistant sub-component is clamped in the fixing groove.

[0027] In some embodiments, the first rotating member includes a first shaft and a first hemisphere, the second rotating member includes a second shaft and a second hemisphere connected to each other, the first hemisphere and the second hemisphere cooperate to form the spherical body, the pump housing includes a first shell and a second shell, the second shell is connected to the first shell and encloses the installation cavity, the first shaft is rotatably connected to the first shell, and the second shaft is rotatably connected to the second shell;

[0028] The wear-resistant component comprises:

[0029] A first wear-resistant sub-component, which is disposed between the first abutting surface and the inner wall surface of the first shell, and abuts against the first abutting surface and the inner wall surface of the pump shell respectively, and the first wear-resistant sub-component is interference-fitted with the first hemisphere and the first shell;

[0030] The second wear-resistant sub-component is arranged between the second abutting surface and the inner wall surface of the second shell, and abuts against the second abutting surface and the inner wall surface of the pump shell respectively, and the second wear-resistant sub-component is interference fit with the second shaft and the second shell.

[0031] In some embodiments, the thermal expansion coefficient of the wear-resistant component is smaller than the thermal expansion coefficients of the first swivel component and the second swivel component.

[0032] In some embodiments, the wear-resistant component is made of nylon or copper, and the pump housing, the first rotating component and the second rotating component are made of plastic or metal.

[0033] In a second aspect, an embodiment of the present application provides a flushing device, which includes a spherical rotor pump as described above.

[0034] Based on the spherical rotor pump and flushing device of the embodiment of the present application, in the construction of the spherical body, a wear-resistant component is arranged between at least one of the first abutting surface of the first rotor component and the second abutting surface of the second rotor component and the inner wall surface of the pump housing. The purpose of this design is to reduce the direct abutting friction between the first rotor component and the second rotor component and the pump housing, and due to the wear resistance of the wear-resistant component, the position stability between the first rotor component and the second rotor component and the pump housing is ensured, thereby reducing the occurrence of loosening of the internal structure of the spherical rotor pump due to wear, which not only ensures that the rotation of the spherical body is smoother, but also reduces the risk of water leakage in the spherical rotor pump structure, and prolongs the service life of the spherical rotor pump. Moreover, due to the reduction of direct friction between the first rotor component and the second rotor component and the pump housing, the amount of thermal deformation is correspondingly reduced, which helps to reduce the heat generated by the spherical rotor pump during operation, thereby reducing the thermal stress of the spherical rotor pump, and by reducing the friction and reducing the amount of thermal deformation, it is conducive to the stable operation of the spherical rotor pump and improves the reliability and stability of the spherical rotor pump.

[0035] In addition, by providing a limiting groove on the inner wall of the pump housing to accommodate the wear-resistant component, the stability of the installation of the wear-resistant component can be improved. And the wear-resistant component is provided on at least one of the first abutting surface and the second abutting surface provided away from the spherical body, compared with the solution in which the wear-resistant component is directly provided between the surface of the spherical body and the pump housing, so that the wear-resistant component is provided further away from the variable cavity. This arrangement helps to avoid the wear-resistant component affecting the water pumping process of the variable cavity, thereby avoiding affecting the water pumping efficiency and improving the reliability of the entire spherical rotor pump. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] In order to more clearly illustrate the embodiments of the present application 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, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying any creative work.

[0037] Figure 1 This is a schematic diagram of the spherical rotor pump and motor structure of this application;

[0038] Figure 2 This is a schematic cross-sectional view of the spherical rotor pump and motor of the present application;

[0039] Figure 3 for Figure 2 A partial enlarged view of the middle A;

[0040] Figure 4 This is a schematic diagram of the explosion structure of the spherical rotor pump of this application;

[0041] Figure 5 This is a schematic diagram of the structure of the first wear-resistant sub-component and the pump casing of the spherical rotor pump of the present application before assembly;

[0042] Figure 6 This is a schematic diagram of the assembled structure of the first wear-resistant sub-component and the pump casing of the spherical rotor pump of the present application;

[0043] Figure 7 This is a schematic structural diagram of the first rotating member of the spherical rotor pump of the present application;

[0044] Figure 8 This is a schematic structural diagram of the second rotating component of the spherical rotor pump of the present application.

[0045] Description of Figure Numbers:

[0046] 100, spherical rotor pump; 10, pump housing; 10A, installation cavity; 10B, limiting groove; 10D, variable cavity; 11, first shell; 111, first through hole; 12, second shell; 13, stopper; 10a, water inlet; 10b, water outlet; 20, first rotating member; 21, first shaft; 22, first hemisphere; 20a, first abutment surface; 30, second rotating member; 31, second shaft; 311, rotating shaft body; 312, commutator; 32, second hemisphere; 30a, second abutment surface; 40, wear-resistant member; 41, first wear-resistant sub-component; 411, second through hole; 412, limiting notch; 42, second wear-resistant sub-component; 50, sealing ring; 200, motor; 201, drive shaft; 300, rotating bearing.

[0047] The realization of the purpose, functional features and advantages of this application will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0048] In order to make the objectives, technical solutions and advantages of the present application clearer, the following part will further describe the embodiments of the present application in detail in conjunction with the accompanying drawings.

[0049] When the following description refers to the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present application. Instead, they are only examples of devices and methods consistent with some aspects of the present application as detailed in the attached claims.

[0050] In the description of the present application, it should be understood that the terms "first", "second", etc. are used for descriptive purposes only and should not be understood as indicating or implying relative importance. 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. In addition, in the description of the present application, unless otherwise specified, "multiple" refers to two or more. "And / or" describes the association relationship of associated objects, indicating that three relationships may exist. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. The character " / " generally indicates that the objects associated before and after are in an "or" relationship.

[0051] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art to which this application belongs. The terms used in this specification are only for the purpose of describing specific embodiments and are not intended to limit this application. The term "and / or" used herein includes any and all combinations of one or more of the related listed items.

[0052] The spherical rotor pump is a positive displacement pump with a unique structure. When the spherical rotor rotates together with the active shaft and the passive shaft that intersect at a certain angle, the cavity opens and closes regularly, thereby completing the function of conveying liquid.

[0053] In the related art, the rotor of the existing spherical rotor pump rubs against the casing when rotating. Over time, the pump casing and the rotor will wear out, and the worn rotor is prone to shifting during rotation, which can lead to subsequent water leakage and other problems.

[0054] To solve the above problems, one aspect of the present application proposes a flushing device. In an embodiment of the present application, the flushing device includes a body, a motor and a spherical rotor pump. The body has a nozzle and a liquid storage chamber. The motor and the spherical rotor pump are both installed on the body. The motor is connected to the first rotor in a transmission manner. The spherical rotor pump is used to transport the liquid in the liquid storage chamber to the nozzle. The flushing device can be a device such as a tooth irrigator or a nasal washer.

[0055] In order to reduce the friction between the rotating member and the pump housing 10 in the spherical rotor pump 100, refer to Figures 1 to 3 On the other hand, the present application proposes a spherical rotor pump 100 . In an embodiment of the present application, the spherical rotor pump 100 includes a pump housing 10 , a first rotor component 20 , a second rotor component 30 and a wear-resistant component 40 .

[0056] Among them, the pump housing 10 is responsible for carrying and supporting other key components, such as the first rotating member 20, the second rotating member 30 and the wear-resistant member 40. It provides a stable structure to ensure that these components maintain the correct position and relative movement during operation. By effectively sharing and transmitting force, the stability of operation is improved. At the same time, the pump housing 10 is not only a supporting structure for internal components, but also plays a role in connecting and fixing the external motor 200. It is also provided with connecting holes to provide a connection point so that the spherical rotor pump 100 can be easily connected to the external motor 200. This connection is crucial because the movement of the motor 200 needs to be effectively transmitted to the spherical rotor pump 100 to achieve the normal operation of the spherical rotor pump 100.

[0057] The first rotor component 20 and the second rotor component 30 are both rotatably connected to the pump housing 10 and are located in the installation cavity 10A of the pump housing 10, and the first rotor component 20 and the second rotor component 30 are connected to form a spherical body. It is understandable that the drive shaft 201 of the drive member such as the external motor 200 can pass through the pump housing 10 and connect with the first rotor component 20 to drive the first rotor component 20 to rotate to drive the second rotor component 30 to rotate, so that the first rotor component 20 is the active rotor and the second rotor component 30 is the driven rotor. Of course, in other embodiments, the second rotor component 30 can also be the active rotor and the first rotor component 20 can be the driven rotor, that is, the second rotor component 30 is connected to the drive shaft 201 of the external motor 200 to drive the first rotor component 20 to rotate. It should be noted that the following embodiments are described in the manner that the first rotating rotor component is the active rotor and the second rotor component 30 is the driven rotor.

[0058] The pump housing 10 is provided with a water inlet 10a and a water outlet 10b. The first rotating member 20 and the second rotating member 30 cooperate to form a spherical body that encloses the inner wall of the pump housing 10 to form a variable cavity 10D. The spherical body rotates to connect the variable cavity 10D with the water inlet 10a or the water outlet 10b respectively. The volume of the same variable cavity 10D when connected to the water inlet 10a is greater than the volume of the variable cavity 10D when connected to the water outlet 10b. Therefore, when the variable cavity 10D moves from the water inlet 10a to the water outlet 10b, the pressure in the variable cavity 10D will drive water to be pumped out from the water outlet 10b to achieve the water pumping function.

[0059] The first swivel member 20 includes a first abutting surface 20a disposed away from the second swivel member 30, and the second swivel member 30 includes a second abutting surface 30a disposed away from the first swivel member 20. Meanwhile, a wear-resistant member 40 is disposed between at least one of the first abutting surface 20a and the inner wall surface of the pump housing 10 and between the second abutting surface 30a and the inner wall surface of the pump housing 10.

[0060] Specifically, a limiting groove 10B can be formed on the inner wall surface of the pump housing 10, so that the wear-resistant component 40 can be arranged in the limiting groove 10B to abut against the first abutting surface 20a and the inner wall surface of the pump housing 10 respectively. In this way, the stability of the installation of the wear-resistant component 40 can be improved. Or the wear-resistant component 40 can be directly arranged between the second abutting surface 30a and the inner wall surface of the pump housing 10 to abut against the second abutting surface 30a and the inner wall surface of the pump housing 10 respectively. Or in other embodiments, the wear-resistant component 40 can be arranged in a split body, that is, a part of the wear-resistant component 40 is located in the limiting groove 10B to abut against the first abutting surface 20a and the inner wall surface of the pump housing 10, and the other part of the wear-resistant component 40 is located between the second abutting surface 30a and the inner wall surface of the pump housing 10 to abut against the second abutting surface 30a and the inner wall surface of the pump housing 10 respectively.

[0061] It is understood that the wear-resistant component 40 can be made of a material with high hardness and good wear resistance. A material with high hardness is more difficult to be scratched or weakened when subjected to friction, thereby extending the service life of the component. Alternatively, the surface treatment of the wear-resistant component 40 can also affect its wear resistance. For example, surface coating, heat treatment, nitriding and other processes can enhance the hardness and wear resistance of the material surface. These treatments can form a protective surface to reduce wear.

[0062] Among them, when the wear-resistant component 40 is required to be arranged between the inner wall surface of the pump casing 10 and the first abutting surface 20a and the inner wall surface of the pump casing 10 and the second abutting surface 30a, the wear-resistant component 40 may include a first wear-resistant sub-component 41 and a second wear-resistant sub-component 42, the first wear-resistant sub-component 41 is arranged between the inner wall surface of the pump casing 10 and the first abutting surface 20a, and the second wear-resistant sub-component 42 is arranged between the inner wall surface of the pump casing 10 and the second abutting surface 30a, so that the first wear-resistant sub-component 41 and the second wear-resistant sub-component 42 are arranged separately so as to be easily installed separately in the pump casing 10, and the design of the separately arranged wear-resistant component 40 provides a more flexible and more maintainable solution for the pump system,

[0063] The purpose of designing the wear-resistant component 40 is to reduce the direct contact friction between the first rotor component 20 and the second rotor component 30 and the pump housing 10, and due to the wear resistance of the wear-resistant component 40, the position stability between the first rotor component and the second rotor component and the pump housing 10 is ensured, thereby reducing the occurrence of loosening of the internal structure of the spherical rotor pump 100 due to wear, which not only ensures that the rotation of the spherical body is smoother, but also reduces the risk of water leakage in the spherical rotor pump 100 structure, thereby extending the service life of the spherical rotor pump 100. In addition, since the direct friction between the first rotor component 20 and the second rotor component 30 and the pump housing 10 is reduced, the thermal deformation is correspondingly reduced, which helps to reduce the heat generated by the spherical rotor pump 100 during operation, thereby reducing the thermal stress of the spherical rotor pump 100, and through the combined effect of reducing friction and reducing thermal deformation, it is conducive to the stable operation of the spherical rotor pump 100 and improves the reliability and stability of the spherical rotor pump 100.

[0064] In addition, by providing a limiting groove 10B on the inner wall surface of the pump housing 10 to accommodate the wear-resistant component 40, the stability of the installation of the wear-resistant component 40 can be improved. And the wear-resistant component 40 is provided on at least one of the first abutting surface 20a and the second abutting surface 30a which are provided away from the spherical body, compared with the solution in which the wear-resistant component 40 is directly provided between the surface of the spherical body and the pump housing 10, so that the wear-resistant component 40 is provided further away from the variable cavity 10D, this arrangement helps to avoid the wear-resistant component 40 affecting the water pumping process of the variable cavity 10D, thereby avoiding affecting the water pumping efficiency and improving the reliability of the entire spherical rotor pump 100.

[0065] Reference Figures 4 to 6In some structural forms, when the wear-resistant component 40 includes the first wear-resistant sub-component 41, the surface of the pump housing 10 opposite to the first abutting surface 20a is concavely provided to form a limiting groove 10B. The first wear-resistant sub-component 41 is at least partially arranged in the limiting groove 10B, so that the two opposite surfaces of the first wear-resistant sub-component 41 are respectively abutted against the groove bottom of the limiting groove 10B and the first abutting surface 20a, that is, the limiting groove 10B provides both limiting and positioning functions, so as to improve the force balance of the first wear-resistant sub-component 41, thereby improving the installation efficiency and installation stability of the first wear-resistant sub-component 41.

[0066] Furthermore, the side wall of the first wear-resistant sub-component 41 circumferentially abuts against the side wall of the limiting groove 10B. In this way, the first wear-resistant sub-component 41 is positioned in its radial direction to improve the stability of the first wear-resistant sub-component 41 in the limiting groove 10B and prevent it from being easily separated, thereby ensuring the friction abutment stability of the first wear-resistant sub-component 41 and the first rotating member 20 and the pump housing 10.

[0067] Reference Figure 3 In one embodiment, the thickness of the first wear-resistant sub-component 41 is greater than or equal to the groove depth of the limiting groove 10B. In this way, when the first wear-resistant sub-component 41 is installed in the limiting groove 10B, the first abutting surface 20a of the first rotating member 20 abuts against the first wear-resistant sub-component 41, which can effectively prevent the first rotating member 20 from extending into the limiting groove 10B and interfering with the side wall of the limiting groove 10B, so as to ensure the stability of the rotation of the first rotating member 20.

[0068] In another embodiment, the thickness of the first wear-resistant sub-component 41 is less than the depth of the limiting groove 10B, and the side wall of the portion of the first rotating member 20 located in the limiting groove 10B is spaced from the groove wall of the limiting groove 10B. In this way, the first rotating member 20 can be effectively prevented from extending into the limiting groove 10B and interfering with the side wall of the limiting groove 10B, so as to ensure the stability of the rotation of the first rotating member 20.

[0069] Optionally, along the axial direction of the first rotating member 20, the projection of the first abutting surface 20a is located inside the first wear-resistant sub-component 41. In this way, the first abutting surface 20a can be abutted by the wear-resistant component 40 to avoid abutting contact between the first abutting surface 20a and the pump housing 10, thereby improving the stability of the rotation of the first rotating member 20.

[0070] Reference Figure 4 and Figure 7 Optionally, the surface of the first wear-resistant sub-component 41 facing away from the pump housing 10 and the first abutting surface 20a are both arranged in a plane. In this way, the contact area between the first wear-resistant sub-component 41 and the first abutting surface 20a is increased to ensure the contact stability between the first wear-resistant sub-component 41 and the first rotating member 20.

[0071] Optionally, the first wear-resistant sub-component 41 is a sheet-like structure. Figure 3 and Figure 4 , not only reducing the occupied volume in the pump housing 10, but also improving the installation and removal efficiency of the first wear-resistant sub-component 41. At the same time, the sheet structure can increase the hardness of the surface of the first wear-resistant sub-component 41, making it more difficult to be scratched or worn. The increase in hardness helps to extend the service life of the first wear-resistant sub-component 41. Specifically, the limiting groove 10B can be a circular groove, and the first wear-resistant sub-component 41 is a circular sheet, so as to improve the stability of the installation of the first wear-resistant sub-component 41.

[0072] Reference Figures 4 to 6 Optionally, the pump housing 10 is provided with a stopper 13 at the bottom wall of the limiting groove 10B. The side wall surface of the first wear-resistant sub-component 41 is concavely provided to form a limiting notch 412, and the stopper 13 is inserted into the limiting notch 412. Such a design of the limiting notch 412 and the stopper 13 can not only improve the assembly accuracy, but also the limiting notch 412 can ensure that the first wear-resistant sub-component 41 maintains the correct position during rotation, effectively preventing the first wear-resistant sub-component 41 from radial position deviation during use.

[0073] Furthermore, there are two stoppers 13, which are symmetrically arranged. The first wear-resistant sub-component 41 is correspondingly provided with two limiting notches 412, and one stopper 13 is inserted into one limiting notch 412. In this way, the two symmetrically arranged stoppers 13 and limiting notches 412 can balance the forces received and reduce the uneven force conditions. This helps to improve the stability of the first rotating member 20 and reduce the risk of local wear. At the same time, even if there is a problem with the stopper 13 or the limiting notch 412 on one side, the other side can still provide support and limiting effects, which enhances fault tolerance and further improves the limiting effect on the wear-resistant component 40.

[0074] Optionally, the first wear-resistant sub-component 41 is sleeved on one end of the first rotating member 20 having the first abutting surface 20a. This arrangement increases the contact area between the first wear-resistant sub-component 41 and the first rotating member 20 to further ensure the contact stability between the first wear-resistant sub-component 41 and the first rotating member 20.

[0075] Reference Figure 3 , Figure 4 as well as Figure 7In some structural forms, the first rotating member 20 includes a first shaft 21 and a first hemisphere 22, and the first hemisphere 22 is connected to the second rotating member 30 to form a spherical body. The first shaft 21 and the first hemisphere 22 can be integrally formed by injection molding or the like, so as to further improve the connection stability between the first shaft 21 and the first hemisphere 22 and reduce the assembly steps for the two. Of course, in other structural forms, the first shaft 21 and the first hemisphere 22 can be a split structure, so that the first shaft 21 and the first hemisphere 22 can be disassembled and replaced after long-term use, and the embodiment of the present application is not limited to this.

[0076] The first rotating member 20 and the second rotating member 30 can be arranged longitudinally in the pump housing 10, and the first rotating member 20 is located below the second rotating member 30. The first hemisphere 22 is provided with a first abutting surface 20a, the first shaft 21 is connected to the side of the first hemisphere provided with the first abutting surface 20a, the surface of the pump housing opposite to the first abutting surface 20a is provided with a limiting groove 10B, the bottom of the limiting groove 10B is provided with a first through hole 111, and the first shaft 21 passes through the limiting groove 10B and the first through hole 111 and is rotatably connected to the pump housing 10 to be connected to the driving shaft 201 of the external motor 200, so that the first rotating member 20 can be driven to rotate to drive the second rotating member 30 to rotate. In this way, during installation, it is only necessary to set the limiting groove 10B relative to the side of the first hemisphere 22 connected to the first shaft 21 to position it, so as to improve the convenience and efficiency of subsequent installation.

[0077] When the wear-resistant component 40 includes the first wear-resistant sub-component 41, the first wear-resistant sub-component 41 is disposed between the first abutting surface 20a and the inner wall surface of the pump housing 10, and abuts against the first abutting surface 20a and the inner wall surface of the pump housing 10 respectively, so as to reduce the friction between the first hemisphere 22 and the pump housing 10, so as to reduce the wear of both. The first wear-resistant sub-component 41 is provided with a second through hole 411, and the first shaft body 21 passes through the second through hole 411 and the first through hole 111 in sequence. The aperture of the second through hole 411 is larger than the diameter of the first shaft body 21, and the outer periphery of the first shaft body 21 is spaced from the hole wall of the second through hole 411. In this way, when the first rotating component 20 rotates, wear between the first shaft body 21 and the wall of the second through hole 411 is avoided, interference with the rotation of the first shaft body 21 is avoided, and at the same time, the stability of the installation of the first wear-resistant sub-component 41 is ensured, thereby improving the sealing performance, making it difficult for water to flow out from between the first wear-resistant sub-component 41 and the pump housing 10, and between the first wear-resistant sub-component 41 and the first hemisphere 22.

[0078] Reference Figure 8In some structural forms, the second rotating member 30 includes a second shaft body 31 and a second hemispherical body 32 connected to each other, the first hemispherical body 22 and the second hemispherical body 32 cooperate to form a spherical body, and a second abutting surface 30a is provided on the side of the second shaft body 31 away from the second hemispherical body 32. Since the second rotating member 30 is a driven rotor, the second shaft body 31 includes a rotating shaft body 311 and a commutator part 312, the rotating shaft body 311 is connected to the second hemispherical body 32, and the commutator part 312 is connected to the side of the rotating shaft body 311 away from the second hemispherical body 32, and the commutator part 312 is connected to the pump housing 10 through the commutator part 312 to achieve rotational connection. The second abutting surface 30a is provided on the side of the commutator part 312 away from the rotating shaft body 311.

[0079] The wear-resistant component 40 also includes a second wear-resistant sub-component 42, which is arranged between the second abutting surface 30a and the inner wall surface of the pump housing 10, and abuts against the second abutting surface 30a and the inner wall surface of the pump housing 10 respectively. In this way, the friction between the second shaft 31 and the pump housing 10 is reduced to reduce the wear of both. Of course, when the first wear-resistant sub-component 41 and the second wear-resistant sub-component 42 are arranged at the same time, the friction and wear between the first rotor component 20 and the pump housing 10 and the second rotor component 30 and the pump housing 10 are reduced at the same time, so as to further reduce the occurrence of loosening of the internal structure of the spherical rotor pump 100.

[0080] It should be noted that the second wear-resistant sub-component 42 can be of the same shape and material as the first wear-resistant sub-component 41 to facilitate processing and production.

[0081] Furthermore, the surface of the pump housing 10 opposite to the second abutting surface 30a is recessed to form a first fixing groove (not shown), and the second wear-resistant sub-component 42 is arranged in the first fixing groove. In this way, the second wear-resistant sub-component 42 can be embedded in the first fixing groove and then abut against the second abutting surface 30a, thereby providing a limiting and positioning function by forming the first fixing groove to improve the installation efficiency and installation stability of the second wear-resistant sub-component 42. In addition, the second abutting surface 30a is also recessed to form a second fixing groove (not shown), so that the second wear-resistant sub-component 42 can also be embedded in the second fixing groove and then abut against the inner wall surface of the pump housing 10. In addition, the first fixing groove can be provided on the surface of the pump housing 10 opposite to the second abutting surface 30a, and the second fixing groove can be provided on the second abutting surface 30a at the same time, so as to further improve the installation efficiency and installation stability of the second wear-resistant sub-component 42.

[0082] Reference Figure 3 and Figure 4In some structural forms, when the first rotating member 20 includes a first shaft 21 and a first hemispherical body 22, and the second rotating member 30 includes a second shaft 31 and a second hemispherical body 32 connected to each other, the first hemispherical body 22 and the second hemispherical body 32 cooperate to form a spherical body. The wear-resistant member 40 includes a first wear-resistant sub-component 41 and a second wear-resistant sub-component 42,

[0083] The pump housing 10 includes a first housing 11 and a second housing 12, wherein the second housing 12 is connected to the first housing 11 and encloses a mounting cavity 10A, the first shaft 21 is rotatably connected to the first housing 11, and the second shaft 31 is rotatably connected to the second housing 12. The first wear-resistant sub-component 41 is disposed between the first abutting surface 20a and the inner wall surface of the pump housing 10, and abuts against the first abutting surface 20a and the inner wall surface of the first housing 11, respectively, and the first wear-resistant sub-component 41 is interference-fitted with the first hemisphere 22 and the first housing 11. The second wear-resistant sub-component 42 is disposed between the second abutting surface 30a and the inner wall surface of the pump housing 10, and abuts against the second abutting surface 30a and the inner wall surface of the second housing 12, respectively, and the second wear-resistant sub-component 42 is interference-fitted with the second shaft 31 and the second housing 12.

[0084] In this way, the first hemisphere 22 and the second hemisphere 32 are stably matched by the clamping action of the first shell 11 and the second shell 12, and the first wear-resistant sub-component 41 and the second wear-resistant sub-component 42 are pressed at the same time, so that there is no need to set an additional structure to fix the first wear-resistant sub-component 41 and the second wear-resistant sub-component 42, so that the internal structure of the spherical rotor pump 100 is simple and the assembly is convenient and quick. In addition, the first shell 11 and the second shell 12 can be connected by a detachable manner such as screws or buckles to facilitate later maintenance and disassembly. In order to improve the sealing of the connection between the first shell 11 and the second shell 12, a sealing ring 50 is sandwiched between the first shell 11 and the second shell 12, which can reduce the possibility of water in the variable cavity 10D leaking from between the first shell 11 and the second shell 12. The water inlet 10a and the water outlet 10b can be opened at the first shell 11 or the second shell 12 at the same time, so as to improve the manufacturing efficiency. Of course, the water inlet 10a and the water outlet 10b can also be opened at the first shell 11 and the second shell 12 respectively.

[0085] Reference Figure 3 and Figure 4In some structural forms, the thermal expansion coefficient of the wear-resistant component 40 is smaller than the thermal expansion coefficient of the first rotating component 20 and the second rotating component 30. In this way, when the first rotating component 20 and the second rotating component 30 rotate, the volume change of the wear-resistant component 40 after friction is smaller than the volume change of the first rotating component 20 and the second rotating component 30 after friction, thereby reducing the situation where the first rotating component 20 and the second rotating component 30 are lifted up due to the expansion of the wear-resistant component 40, thereby ensuring the stability of the gap between the first rotating component 20 and the second rotating component 30 and the pump housing 10 to avoid water leakage.

[0086] Furthermore, the wear-resistant component 40 is made of nylon or copper, and at least one of the pump housing 10 , the first rotating component 20 and the second rotating component 30 is made of plastic or metal.

[0087] Among them, due to the strong heat bearing capacity, low thermal expansion coefficient, stable structure and good wear resistance of nylon, these characteristics make nylon suitable for parts subjected to high friction and wear, so the material of the wear-resistant component 40 can be nylon. In addition, since copper has good wear resistance and can maintain relatively high strength under friction and wear conditions, copper can also be selected for the wear-resistant component in other embodiments. The pump housing 10, the first rotor component 20 and the second rotor component 30 are made of plastic or metal. Specifically, PEEK (Poly Ether Ether Ketone) can be selected, and its thermal expansion coefficient is in the range of 29×10-6 / ℃ to 50×10-6 / ℃, or POM and CF (Carbon Fiber) can be selected, and its thermal expansion coefficient is 11×10-6 / ℃, or PPS (Poly Phenylene Sulfide) and CF can be selected, and its thermal expansion coefficient ranges from 30×10-6 / ℃ to 50×10-6 / ℃, and PPS has a very high bonding strength with metal materials. In this way, the material restrictions of the wear-resistant component 40 and the pump housing 10, the first rotor component 20 and the second rotor component 30 are satisfied, that is, the thermal expansion coefficient of the wear-resistant component 40 is less than the thermal expansion coefficient of the first rotor component 20 and the second rotor component 30, and the structural stability of the pump housing 10, the first rotor component 20 and the second rotor component 30 is guaranteed.

[0088] The same or similar numbers in the drawings of this embodiment correspond to the same or similar parts; in the description of this application, it should be understood that if the terms "upper", "lower", "left", "right", etc. indicate an orientation or position relationship based on the orientation or position relationship shown in the drawings, it is only for the convenience of describing this application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, the terms describing the position relationship in the drawings are only used for illustrative purposes and cannot be understood as a limitation on this patent. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0089] The above are only preferred embodiments of the present application and are not intended to limit the present application. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present application should be included in the protection scope of the present application.

Claims

1. A spherical rotor pump, characterized in that: The spherical rotor pump comprises: A pump housing having a mounting cavity; A first rotating member, the first rotating member is rotatably connected to the pump housing and is located in the installation cavity; a second rotating member, the second rotating member is rotatably connected to the pump housing and is located in the installation cavity, the first rotating member and the second rotating member are connected to form a spherical body, the spherical body and the inner wall surface of the pump housing enclose a variable volume cavity, the first rotating member includes a first abutting surface disposed away from the second rotating member, and the second rotating member includes a second abutting surface disposed away from the first rotating member; and A wear-resistant component, wherein the inner wall surface of the pump housing is provided with a limiting groove, the wear-resistant component is arranged in the limiting groove, and abuts against the first abutting surface and the inner wall surface of the pump housing respectively; and / or, the wear-resistant component is arranged between the second abutting surface and the inner wall surface of the pump housing, and abuts against the second abutting surface and the inner wall surface of the pump housing respectively.

2. The spherical rotor pump according to claim 1, characterized in that: The wear-resistant component includes a first wear-resistant sub-component, and the surface of the pump housing opposite to the first abutting surface is concavely provided with a limiting groove. The first wear-resistant sub-component is at least partially arranged in the limiting groove and abuts against the bottom of the limiting groove and the first abutting surface respectively.

3. The spherical rotor pump according to claim 2, characterized in that: The side wall of the first wear-resistant sub-component is circumferentially abutted against the groove side wall of the limiting groove.

4. The spherical rotor pump according to claim 2, characterized in that: The thickness of the first wear-resistant sub-component is greater than or equal to the depth of the limiting groove; Alternatively, the thickness of the first wear-resistant sub-component is smaller than the groove depth of the limiting groove, and the side wall of the portion of the first rotating member located in the limiting groove is spaced apart from the groove wall of the limiting groove.

5. The spherical rotor pump according to claim 2, characterized in that: Projected along the axial direction of the first rotating member, the projection of the first abutting surface is located inside the first wear-resistant sub-component; And / or, the surface of the first wear-resistant sub-component facing away from the pump housing and the first abutting surface are both arranged in a plane; And / or, the first wear-resistant sub-component is a sheet-like structure.

6. The spherical rotor pump according to claim 2, characterized in that: The pump housing is provided with a stopper on the bottom wall of the limiting groove, and the side wall surface of the first wear-resistant sub-component is concavely provided to form a limiting notch, and the stopper is inserted into the limiting notch.

7. The spherical rotor pump according to claim 6, characterized in that: There are two stop parts, which are symmetrically arranged. The first wear-resistant sub-component is correspondingly provided with two limiting notches, and one stop part is inserted into one limiting notch.

8. The spherical rotor pump according to claim 2, characterized in that: The first wear-resistant sub-component is sleeved on one end of the first rotating component where the first abutting surface is provided.

9. The spherical rotor pump according to claim 1, characterized in that: The first rotating member comprises a first shaft and a first hemispherical body, the first hemispherical body is connected with the second rotating member to form the spherical body, and the first hemispherical body is provided with the first abutting surface; The first shaft is connected to a side of the first hemisphere where the first abutment surface is provided, the surface of the pump casing opposite to the first abutment surface is provided with the limiting groove, a first through hole is provided at the bottom of the limiting groove, and the first shaft passes through the limiting groove and the first through hole to be rotatably connected to the pump casing.

10. The spherical rotor pump according to claim 9, characterized in that The wear-resistant component includes a first wear-resistant sub-component, which is arranged between the first abutment surface and the inner wall surface of the pump housing, and abuts against the first abutment surface and the inner wall surface of the pump housing respectively. The first wear-resistant sub-component is provided with a second through hole, and the first shaft body passes through the second through hole and the first through hole in sequence. The aperture of the second through hole is larger than the diameter of the first shaft body, and the outer periphery of the first shaft body is spaced apart from the hole wall of the second through hole.

11. The spherical rotor pump according to any one of claims 1 to 10, characterized in that The second rotating member comprises a second shaft body and a second hemisphere body connected to each other, the second shaft body is rotatably connected to the pump housing, the first rotating member and the second hemisphere body cooperate to form the spherical body, the first rotating member is provided with the first abutting surface on a side away from the second hemisphere body, and the second shaft body is provided with the second abutting surface on a side away from the second hemisphere body; The wear-resistant component further includes a second wear-resistant sub-component, which is disposed between the second abutting surface and the inner wall surface of the pump housing and abuts against the second abutting surface and the inner wall surface of the pump housing respectively.

12. The spherical rotor pump according to claim 11, characterized in that The surface of the pump housing opposite to the second abutting surface is concavely provided with a first fixing groove, and the second wear-resistant sub-component is arranged in the first fixing groove; And / or, the second abutting surface is concavely formed to form a second fixing groove, and the second wear-resistant sub-component is arranged in the second fixing groove.

13. The spherical rotor pump according to claim 1, characterized in that The first rotating member includes a first shaft and a first hemisphere, the second rotating member includes a second shaft and a second hemisphere connected to each other, the first hemisphere and the second hemisphere cooperate to form the spherical body, the pump housing includes a first shell and a second shell, the second shell is connected to the first shell and encloses the installation cavity, the first shaft is rotatably connected to the first shell, and the second shaft is rotatably connected to the second shell; The wear-resistant component comprises: a first wear-resistant sub-component, which is disposed between the first abutting surface and the inner wall surface of the first shell, and abuts against the first abutting surface and the inner wall surface of the pump shell respectively, and the first wear-resistant sub-component is interference-fitted with the first hemisphere and the first shell; and The second wear-resistant sub-component is arranged between the second abutting surface and the inner wall surface of the second shell, and abuts against the second abutting surface and the inner wall surface of the pump shell respectively, and the second wear-resistant sub-component is interference fit with the second shaft and the second shell.

14. The spherical rotor pump according to any one of claims 1 to 10, characterized in that The thermal expansion coefficient of the wear-resistant member is smaller than the thermal expansion coefficients of the first rotor member and the second rotor member.

15. The spherical rotor pump according to claim 14, characterized in that The wear-resistant component is made of nylon or copper, and the pump housing, the first rotating component and the second rotating component are made of plastic or metal.

16. A flushing device, characterized in that: Comprising a spherical rotor pump as claimed in any one of claims 1 to 15.

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