A water distribution pump structure and a washing machine including the same

Abstract

The present invention provides a water distribution pump structure and a washing machine including the same, which includes a pump body, an end cover, a water distribution valve core, a drainage paddle and a driving motor. The end cover is connected to the pump body, and a containing space is formed in the pump body. The water distribution valve core and the drainage paddle are rotatably arranged in the containing space. A plurality of water outlets communicating with the containing space are arranged on the pump body. A water distribution port is arranged on the water distribution valve core. The driving motor is drivingly connected to the water distribution valve core and the drainage paddle. The driving motor drives the drainage paddle to rotate at least during forward rotation, and the driving motor drives the water distribution valve core to rotate during reverse rotation. The present invention makes the water pump and the water distribution valve form an integrated structure, can control multiple water circuits simultaneously, and simplifies the water circuit structure.

Description

Technical Field

[0001] The present invention relates to the technical field of water pumps, and particularly to a water distribution pump structure and a washing machine including the same. Background Art

[0002] The ability of multi-barrel washing machines to achieve partition washing will be an important trend in the future development of washing machines. However, in the overall design of multi-barrel washing machines, the design and control of the water circuit are crucial. For true partition washing, it is necessary to meet the washing requirements of separate washing of multiple washing barrels, combined washing of multiple washing barrels, and other different area separate washing. In the prior art, for different combinations of washing methods in multiple areas, multiple valve bodies must be present simultaneously to distribute the water flow. Therefore, the design of the pipeline is difficult, the number of valve bodies to be controlled is large, and some water circuits need to do work on the water. Therefore, the addition of a drainage pump and a circulation pump is required to ensure the normal operation of the water circuit.

[0003] In summary, in the overall design of multi-barrel washing machines, the number of water circuit control valve bodies and control electrical components such as circulation and drainage pump bodies is relatively large. Therefore, the design of the water circuit is somewhat complex, and too many electrical components will lead to an increase in production costs, later maintenance costs, and the difficulty of assembly and installation. Summary of the Invention

[0004] In view of this, the present invention provides a water distribution pump structure and a washing machine including the same, which are at least used to solve the technical problem of the complex design of the control system for multiple water circuits in the prior art. Specifically:

[0005] The present invention provides a water distribution pump structure, including a pump body, an end cover, a water distribution valve core, a drainage paddle, and a driving motor. The end cover is connected to the pump body to form an accommodation space inside the pump body. The water distribution valve core and the drainage paddle are rotatably arranged in the accommodation space. The pump body is provided with a plurality of water outlets communicating with the accommodation space. The water distribution valve core is provided with a water distribution port. The driving motor is drivingly connected to the water distribution valve core and the drainage paddle. The driving motor drives the drainage paddle to rotate at least during forward rotation, and the driving motor drives the water distribution valve core to rotate during reverse rotation. By rotating the water distribution valve core, the communication relationship between the water outlet and the accommodation space is changed.

[0006] Further, the inside of the water distribution valve core forms a cylindrical structure with a cavity, and a plurality of the water distribution ports are formed on the side wall of the water distribution valve core. Each water distribution port can communicate with the water outlet on the pump body through the rotation of the water distribution valve core.

[0007] Further, the drainage paddle is connected to the driving shaft of the driving motor and rotates with the driving shaft.

[0008] The water distribution valve core is connected to the drive shaft of the drive motor through a one-way bearing, and when the drive motor rotates in reverse, the water distribution valve core rotates along with the drive shaft.

[0009] Further, a positioning mechanism is provided on the pump body, a positioning groove is provided on the water distribution valve core, and the positioning mechanism and the positioning groove position the water distribution valve core.

[0010] Further, the positioning mechanism includes a positioning pin and a spring. The positioning pin and the spring are arranged radially along the pump body, and the spring provides a thrust force to make the positioning pin extend to the inner side of the pump body.

[0011] Further, a positioning sliding groove is provided on the water distribution valve core along its circumferential direction, and the positioning grooves are distributed in the positioning sliding groove.

[0012] Further, a sealing sleeve is further included. The sealing sleeve is arranged between the water distribution valve core and the pump body. A plurality of communication holes are formed on the sealing sleeve, and each communication hole is communicated with one of the water outlet ports.

[0013] Further, a limiting structure is formed on the outer wall of the sealing sleeve, and the limiting structure is formed by radially protruding or recessing along the sealing sleeve.

[0014] Further, a first installation groove is formed along the circumferential direction on the conical surface of the outer wall of the water distribution valve core, and the radially inner part of the sealing sleeve is embedded into the first installation groove, and / or,

[0015] A second installation groove is formed along the circumferential direction on the conical surface of the inner wall of the pump body, and the radially outer part of the sealing sleeve is embedded into the second installation groove.

[0016] Further, the number of the water distribution ports is more than the number of the water outlet ports, and the water distribution ports and the water outlet ports are distributed along the circumference in different distribution manners.

[0017] Further, three water outlet ports are uniformly distributed on the same circumference.

[0018] Further, six water distribution ports are distributed on the same circumference, and the angular intervals between the radial centers of adjacent two water distribution ports include 40°, 80° and 120°.

[0019] The present invention further provides a washing machine, which includes a plurality of washing tubs and also includes the above-mentioned water distribution pump structure. A plurality of water outlet ports of the water distribution pump structure are respectively communicated with the water inlet pipelines of one of the washing tubs.

[0020] The present invention provides multiple water outlets on the pump body and multiple water distribution ports on the water distribution valve core, enabling the corresponding relationship between the water distribution ports and the water outlets to be changed by rotating the water distribution valve core, thereby obtaining various different water outlet states. Meanwhile, a drainage paddle is provided to integrate the water pump and the water distribution valve, making the structure more compact and the overall water circuit simpler. Brief Description of the Drawings

[0021] By referring to the accompanying drawings and describing its exemplary embodiments in detail, the above and other objectives, features, and advantages of the present disclosure will become more apparent. The following described drawings are only some embodiments of the present disclosure. Those of ordinary skill in the art can obtain other drawings based on these drawings without creative efforts.

[0022] Figure 1 is an exploded structural schematic diagram of the water distribution pump structure of the present invention;

[0023] Figure 2 is a partial cross-sectional schematic diagram of the water distribution pump structure of the present invention;

[0024] Figure 3 is Figure 2 the enlarged view at A in

[0025] Figure 4 is a schematic diagram of the distribution of the positioning mechanism;

[0026] Figure 5 is a schematic diagram of the pump body structure;

[0027] Figure 6 is a schematic diagram of the water distribution valve core structure;

[0028] Figure 7 is a schematic diagram of the distribution position of the water distribution ports;

[0029] Figure 8 is a schematic diagram of the drainage paddle structure;

[0030] Figure 9 is a schematic diagram of the seal sleeve structure;

[0031] Figures 10 - 16 is a schematic diagram of different water outlet states.

[0032] 1 - Pump body; 11 - Water outlet; 12 - Second installation groove; 13 - Positioning mechanism; 131 - Positioning pin; 132 - Spring; 133 - Plugging screw; 2 - End cover; 21 - Water inlet; 3 - Water distribution valve core; 31 - Water distribution port; 32 - Annular sealing rib; 33 - Connection cylinder; 34 - First installation groove; 35 - Positioning groove; 36 - Positioning sliding groove; 4 - Drainage paddle; 41 - Central shaft; 42 - Paddle blade; 43 -; Shaft connecting part; 5 - Driving motor; 6 - Seal sleeve; 61 - Communication hole; 7 - One-way bearing. Detailed Description of the Specific Embodiment

[0033] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Apparently, the described embodiments are some, but not all, of the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0034] The terms used in the embodiments of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The singular forms "a", "the", and "said" used in the embodiments of the present invention and the appended claims are also intended to include the plural forms unless the context clearly indicates otherwise. "Multiple" generally includes at least two, but does not exclude the case of including at least one.

[0035] It should be understood that the term " / and / " used herein is only a description of the association relationship of associated objects, indicating that there can be three relationships. For example, A and / or B can represent: A exists alone, A and B exist simultaneously, and B exists alone. In addition, the character " / " herein generally represents an "or" relationship between the associated objects before and after.

[0036] It should also be noted that the terms "comprise", "include", or any other variant thereof are intended to cover non-exclusive inclusion, such that a commodity or system including a series of elements not only includes those elements but also includes other elements not explicitly listed, or further includes elements inherent to such commodity or system. Without further limitation, the element defined by the statement "including one..." does not exclude the existence of additional identical elements in the commodity or system including the said element.

[0037] As Figures 1 - 9 shown, the present invention provides a water distribution pump structure, including a pump body 1, an end cover 2, a water distribution valve core 3, a drainage paddle 4, and a drive motor 5. The end cover 2 is connected to the pump body 1 to form an accommodation space inside the pump body 1. The water distribution valve core 3 and the drainage paddle 4 are rotatably arranged in the accommodation space. A plurality of water outlets 11 communicating with the accommodation space are provided on the pump body 1. A water distribution port 31 is provided on the water distribution valve core 3. The drive motor 5 is drivingly connected to the water distribution valve core 3 and the drainage paddle 4. The drive motor 5 drives the drainage paddle 4 to rotate at least during forward rotation, and the drive motor 5 drives the water distribution valve to rotate during reverse rotation.

[0038] As Figure 5As shown, the pump body 1 is configured as a cylindrical structure with an open end, and the water outlet 11 is provided on the side wall of the pump body 1 and is circumferentially distributed on the same circumference. The end cover 2 is configured as a cover structure and is closed to the open end of the pump body 1. The water inlet 21 is preferably provided at the center of the end cover 2 so that water enters the accommodation space along the axial direction of the pump body 1.

[0039] As Figure 6 shown, the inside of the water distribution valve core 3 forms a cylindrical structure with a cavity, and a plurality of water distribution ports 31 are formed on the side wall of the water distribution valve core 3. Each water distribution port 31 can be communicated with the water outlet 11 on the pump body 1 through the rotation of the water distribution valve core 3, and by rotating the water distribution valve core 3, the corresponding relationship between the water distribution port 31 and the water outlet 11 can be changed, thereby changing the communication relationship of the water outlet 11, so that the pump body 1 has multiple water outlet modes.

[0040] As Figure 8 shown, the drainage paddle 4 includes a central shaft 41, paddle blades 42 and a connecting shaft portion 43. A plurality of paddle blades 42 are circumferentially distributed along the central shaft 41, for example, three or four can be provided, etc., and are evenly distributed in the circumferential direction of the central shaft 41. The connecting shaft portion 43 is provided at the end of the central shaft 41 and is used to connect with the drive shaft of the drive motor 5. Preferably, the connecting shaft portion 43 is configured as a cylindrical structure extending along the axial direction of the central shaft 41, the outer wall is a circumferential surface, and the inner wall is configured as an irregular curved surface, for example, a curved surface with a D-shaped cross section. The corresponding drive shaft of the drive motor 5 is also configured as a shaft with a D-shaped cross section, and the drive shaft is inserted into the connecting shaft portion 43 to drive the drainage paddle 4 to rotate.

[0041] At the end of the water distribution valve core 3 away from the end cover 2, that is, the end with a smaller radial dimension, a connecting cylinder 33 is provided. The connecting cylinder 33 extends along the axis of the water distribution valve core 3 to form a cylindrical structure. The connecting shaft portion 43 of the drainage paddle 4 can extend into the connecting cylinder 33 and is connected to the drive shaft of the drive motor 5 within the connecting cylinder 33.

[0042] The connecting cylinder 33 and the drive shaft of the drive motor 5 are connected by a one-way bearing 7. A keyway is provided on the outer wall of the one-way bearing 7, and a driving limiting portion is provided on the inner wall of the connecting cylinder 33. The driving limiting portion is engaged with the keyway so that the one-way bearing 7 can drive the connecting cylinder 33 (i.e., the water distribution valve core) to rotate.

[0043] As Figure 2 、 Figure 3 、 Figure 4As shown, a positioning mechanism 13 is further provided on the pump body 1. The positioning mechanism 13 includes a positioning pin 131 and a spring 132. The positioning pin 131 is arranged along the radial direction of the pump body 1 and extends to the inner side of the pump body 1. The spring 132 provides a thrust force for the positioning pin 131 towards the inner side of the pump body 1. Preferably, a through hole is arranged along the radial direction on the pump body 1. The positioning pin 131 and the spring 132 are arranged in the through hole, and then the outer end of the through hole in the radial direction is blocked by a plugging screw 133 to facilitate the installation of the positioning mechanism 13. A plurality of the positioning mechanisms 13 are evenly distributed on the same circumference, preferably three are provided, so that the water distribution valve core 3 receives uniform forces from the positioning mechanism 13 in all directions.

[0044] A positioning groove 35 cooperating with the positioning mechanism 13 is arranged on the water distribution valve core 3. The positioning groove 35 is a spherical groove, and the end of the positioning pin 131 is also correspondingly arranged as a spherical surface, so that when the positioning pin 131 slides into the positioning groove 35, it can play a positioning role, and under the action of an external force (under the action of the driving motor 5), the positioning pin 131 can slide out of the positioning groove 35, enabling the water distribution valve core 3 to rotate. Preferably, the positioning groove 35 is arranged on the outer wall of the connecting cylinder 33, and the positioning mechanism 13 is arranged at its corresponding position.

[0045] A plurality of the positioning grooves 35 are arranged on the same circumference. The plurality of positioning grooves 35 can be evenly distributed or unevenly distributed according to a certain rule. For example, they can be distributed according to the distribution of the water distribution ports 31, etc., so that the positioning mechanism 13 is in positioning cooperation with the positioning groove 35 in each water outlet state.

[0046] Further, a positioning sliding groove 36 is further arranged on the water distribution valve core 3. The positioning sliding groove 36 is configured as a groove formed along the entire circumference of the water distribution valve core 3. The positioning groove 35 is arranged in the positioning sliding groove 36. The end of the positioning pin 131 of the positioning mechanism 13 slides in the positioning sliding groove 36 to limit and guide the sliding of the positioning pin 131.

[0047] An installation hole is arranged at the closed end of the pump body 1. The axis of the installation hole position is collinear with the axis of the pump body 1. The connecting cylinder 33 can extend out of the accommodating space through the installation hole. A sealing device, preferably an O-ring, is arranged between the inner wall of the installation hole and the outer wall of the connecting cylinder 33, and / or a sealing device, preferably an O-ring, is also arranged between the inner end face of the pump body 1 and the outer end face of the water distribution valve core 3, so as to form a sealed connection between the water distribution valve core 3 and the pump body 1 and prevent water from flowing out of the installation hole.

[0048] Preferably, the radial dimension of the inner wall of the pump body 1 gradually decreases along the water inlet direction to form a conical surface, and the water outlet 11 is located on the conical surface; the radial dimension of the outer wall of the water distribution valve core 3 gradually decreases along the water inlet direction to form a conical surface, and the water distribution port 31 is formed on the conical surface. The conical surfaces of the inner wall of the pump body 1 and the outer wall of the water distribution valve core 3 are arranged such that they are in conical surface fit with each other, thereby increasing the contact area, that is, the sealing area between the two can be larger. Moreover, the dimension of the conical surface gradually decreases along the water flow direction, so that after the water flow enters the accommodating space, the thrust acting on the water distribution valve core 3 in the axial direction causes it to be pressed against the inner wall of the pump body 1 through the conical surface, thereby further improving the sealing performance between the two.

[0049] Preferably, a sealing sleeve 6 is further included. As Figure 9 shown, the sealing sleeve 6 is configured as a conical tube structure with both ends open. The sealing sleeve 6 is arranged between the conical surfaces of the water distribution valve core 3 and the pump body 1. A plurality of communication holes 61 are formed on the sealing sleeve 6, and each communication hole 61 communicates with one water outlet 11.

[0050] A limiting structure is arranged on the sealing sleeve 6. The limiting structure protrudes or concaves radially outward along the sealing sleeve 6, so that the limiting structure limits the sealing sleeve 6 in the circumferential and / or radial directions, preventing the sealing sleeve 6 and the pump body 1 from moving relative to each other, thereby ensuring a fixed corresponding relationship between each communication hole 61 and the water outlet 11 and avoiding misalignment between the two, which may affect the water outlet.

[0051] Preferably, at least one of the communication holes 61 extends radially outward of the sealing sleeve 6 to form an extension tube, and the extension tube extends into the water outlet 11 communicated therewith. That is, the extension tube constitutes the limiting structure. The extension tube extends into the water outlet 11, so that the sealing sleeve 6 cannot move relative to the pump body 1 in the radial and circumferential directions. Optimally, the extension tube is provided at each communication hole 61, thereby improving the reliability of the limit between the sealing sleeve 6 and the pump body 1; on the other hand, the arrangement of the extension tube also has a reverse flow effect on the water flow, enabling the water to flow more smoothly into the water outlet 11 and preventing the water from flowing between the pump body 1 and the sealing sleeve 6.

[0052] Preferably, as Figure 6As shown, a first mounting groove 34 is formed circumferentially on the conical surface of the outer wall of the water distribution valve core 3. The radially inner part of the sealing sleeve 6 is embedded in the first mounting groove 34. The setting of the first mounting groove 34 can position the installation of the water distribution valve core 3 and the sealing sleeve 6, making it easier for the two to be installed in place. At the same time, the setting of the first mounting groove 34 also enables the water distribution valve core 3 to be axially limited by the sealing sleeve 6.

[0053] Or, as Figure 5 shown, a second mounting groove 12 is formed circumferentially on the conical surface of the inner wall of the pump body 1. The radially outer part of the sealing sleeve 6 is embedded in the second mounting groove 12. Similarly, the setting of the second mounting groove 12 positions the installation of the sealing sleeve 6 and the pump body 1, making it easier for the two to be installed in place. Moreover, the setting of the second mounting groove 12 can also axially limit the sealing sleeve 6 and the pump body 1.

[0054] Furthermore, while the first mounting groove 34 is provided on the water distribution pump body 1, the second mounting groove 12 is also provided on the pump body 1. In this way, the water distribution pump body 1 and the pump body 1 can be simultaneously installed, positioned, and limited with the sealing sleeve 6. On the other hand, the radial distance between the pump body 1 and the water distribution valve core 3 can also be reduced, thereby reducing the radial dimension of the pump body 1, and further reducing the radial dimension of the overall water distribution pump structure.

[0055] A sealing structure is provided between the end cover 2 and the pump body 1 and / or the water distribution valve core 3.

[0056] Specifically, a sealing ring can be provided between the end cover 2 and the pump body 1. The sealing ring is preferably a T-shaped sealing ring or an H-shaped sealing ring, that is, the cross-section of the sealing ring is T-shaped or H-shaped, so that a part of the sealing ring is located between the end cover 2 and the pump body 1, and the other part can at least cover the outside of the connection between the end cover 2 and the pump body 1 to improve the sealing effect, which can not only prevent external foreign objects from entering the pump body 1, but also prevent the water in the pump body 1 from flowing out.

[0057] The sealing structure between the end cover 2 and the water distribution valve core 3 preferably includes: an annular sealing groove provided on the inner side wall of the end cover 2, and an annular sealing rib 32 formed circumferentially at the end of the water distribution valve. As Figure 6 shown, after the end cover 2 is installed, the annular sealing rib 32 is embedded in the annular sealing groove, and a sealing ring is provided on the radially inner side and / or radially outer side of the annular sealing rib 32 to form a seal between the annular sealing groove and the annular sealing rib 32 to prevent water from flowing out between the end cover 2 and the water distribution valve core 3.

[0058] The number of the water diversion ports 31 is more than that of the water outlet ports 11, and the water diversion ports 31 and the water outlet ports 11 are distributed along the circumference in different distribution manners, so that the water diversion ports 31 and the water outlet ports 11 can be communicated in a variety of different ways, and the specific conduction positions and numbers of the plurality of water outlet ports 11 can have a variety of different combination manners.

[0059] The following introduces the numbers and corresponding relationships of the water outlet ports 11 and the water diversion ports 31 through specific embodiments:

[0060] Three water outlet ports 11 are evenly distributed on the same circumference, which are respectively an A water outlet port, a B water outlet port and a C water outlet port, that is, the angular intervals of the two adjacent water outlet ports in the radial direction of the circle center are 120°. As Figure 7 shown, six water diversion ports 31 are distributed on the same circumference, and the angular intervals of the two adjacent water diversion ports 31 in the radial direction of the circle center include 40°, 80° and 120°. Among them, there are four water diversion ports 31 arranged at intervals of 40° in sequence along the counterclockwise direction, a fifth water diversion port 31 arranged at an interval of 80° from the fourth water diversion port 31, and a sixth water diversion port 31 arranged at an interval of 40 degrees from the fifth water diversion port 31, and the sixth water diversion port 31 and the first water diversion port 31 are spaced 120°. That is, the minimum angle between the water diversion ports 31 is 40°, and the angles between the water diversion ports 31 are all integer multiples of 40°. Therefore, the plurality of positioning grooves 35 are evenly distributed on the same circumference, and the angular interval between the two adjacent positioning grooves 35 in the radial direction of the circle center is 40°. In this embodiment, the water outlet states of the water distribution pump structure can be as follows by rotating the water distribution valve core 3:

[0061] The first state: As Figure 10 shown

[0062] This state is the first position (initial position) of the water distribution valve core 3, and this position is defined as the water distribution valve core 3 being at 0°.

[0063] In this state, the three water outlet ports A, B, and C are evenly communicated with the water diversion ports, that is, all three water outlet ports can discharge water. And according to the circumferential equal division rule, when the water distribution valve core 3 is rotated clockwise by 120°, 240°, and 360°, the three water outlet ports A, B, and C can also discharge water simultaneously.

[0064] The second state: As Figure 11 shown

[0065] This state is the second position of the water distribution valve core. It rotates 40° clockwise from the first position to the second position.

[0066] In this state, the B water outlet port is communicated with the water diversion port and can discharge water, while the A and C water outlet ports are not communicated with the water diversion port and cannot discharge water.

[0067] The third state: As Figure 12 shown

[0068] This state is the third position of the water diversion valve core, rotating 80° clockwise from the first position to the third position.

[0069] In this state, the B and C water outlets are connected to the water diversion port and can discharge water, while the A water outlet is not connected to the water diversion port and cannot discharge water.

[0070] The fourth state: As Figure 13 shown

[0071] This state is the fourth position of the water diversion valve core, rotating 160° clockwise from the first position to the fourth position.

[0072] In this state, the A water outlet is connected to the water diversion port and can discharge water, while the B and C water outlets are not connected to the water diversion port and cannot discharge water.

[0073] The fifth state: As Figure 14 shown

[0074] This state is the fifth position of the water diversion valve core, rotating 200° clockwise from the first position to the fifth position.

[0075] In this state, the A and B water outlets are connected to the water diversion port and can discharge water, while the C water outlet is not connected to the water diversion port and cannot discharge water.

[0076] The sixth state: As Figure 15 shown

[0077] This state is the sixth position of the water diversion valve core, rotating 280° clockwise from the first position to the sixth position.

[0078] In this state, the C water outlet is connected to the water diversion port and can discharge water, while the A and B water outlets are not connected to the water diversion port and cannot discharge water.

[0079] The seventh state: As Figure 16 shown

[0080] This state is the seventh position of the water diversion valve core: rotating 280° clockwise from the first position to the seventh position;

[0081] In this state, the A and C water outlets are connected to the water diversion port and can discharge water, while the B water outlet is not connected to the water diversion port and cannot discharge water.

[0082] As described above, by rotating the water diversion valve core, the three water outlets can have the above seven different connection states, thus making the control of the water distribution pump structure more diverse and flexible.

[0083] Preferably, more water outlets can be provided, such as four, five or more, to suit the number of washing tubs of a multi-tub washing machine. Similarly, the number of water distribution ports also needs to be increased accordingly.

[0084] The present invention also provides a washing machine, which includes a plurality of washing tubs and the above-mentioned water distribution pump structure, and the multiple water outlets of the water distribution pump structure are respectively communicated with the water inlet pipelines of one of the washing tubs.

[0085] The washing machine provided by the present invention is provided with a water distribution pump for supplying water to a plurality of washing tubs and controlling, and the water distribution pump functions as both a water pump and a water distribution valve at the same time, eliminating the need for a separate water distribution valve, simplifying the structure of the water circuit of the washing machine, and reducing the number of components of the whole machine at the same time.

[0086] The exemplary embodiments of the present disclosure have been specifically shown and described above. It should be understood that the present disclosure is not limited to the detailed structures, settings or implementation methods described herein; on the contrary, the present disclosure is intended to cover various modifications and equivalent settings included within the spirit and scope of the appended claims.

Claims

1. A water distribution pump structure, characterized in that It includes a pump body, an end cover, a water distribution valve core, a drainage paddle and a driving motor. The end cover is connected to the pump body to form an accommodation space inside the pump body. The water distribution valve core and the drainage paddle are rotatably arranged inside the accommodation space. Multiple water outlets communicating with the accommodation space are arranged on the pump body, and three water outlets are evenly distributed on the same circumference. A water distribution port is arranged on the water distribution valve core. The inside of the water distribution valve core forms a cylindrical structure with a cavity. Multiple water distribution ports are formed on the side wall of the water distribution valve core. Each water distribution port can communicate with the water outlet on the pump body through the rotation of the water distribution valve core. Among them, the number of water distribution ports is more than the number of water outlets, and the water distribution ports and the water outlets are distributed along the circumference in different distribution ways. Six water distribution ports are distributed on the same circumference, and the angular intervals of the adjacent two water distribution ports in the radial direction of the circle center include 40°, 80° and 120°. The driving motor is drivingly connected to the water distribution valve core and the drainage paddle. The driving motor drives the drainage paddle to rotate at least when rotating forward, and the driving motor drives the water distribution valve core to rotate when rotating backward. The communication relationship between the water outlet and the accommodation space is changed through the rotation of the water distribution valve core.

2. The water distribution pump structure according to claim 1, wherein The drainage paddle is connected to the driving shaft of the driving motor and rotates with the driving shaft. The water distribution valve core is connected to the driving shaft of the driving motor through a one-way bearing, and the water distribution valve core rotates with the driving shaft when the driving motor rotates backward.

3. The water distribution pump structure according to claim 2, characterized in that, A positioning mechanism is arranged on the pump body, and a positioning groove is arranged on the water distribution valve core. The positioning mechanism and the positioning groove position the water distribution valve core.

4. The water distribution pump structure according to claim 3, characterized in that, The positioning mechanism includes a positioning pin and a spring. The positioning pin and the spring are arranged along the radial direction of the pump body, and the spring provides a thrust force to make the positioning pin extend to the inner side of the pump body.

5. The water distribution pump structure according to claim 3, characterized in that, A positioning sliding groove is arranged on the water distribution valve core along its circumferential direction, and the positioning groove is distributed in the positioning sliding groove.

6. The water distributor structure according to claim 1, wherein It also includes a sealing sleeve. The sealing sleeve is arranged between the water distribution valve core and the pump body. Multiple communication holes are formed on the sealing sleeve, and each communication hole communicates with one water outlet.

7. The water distribution pump structure according to claim 6, characterized in that, A limiting structure is formed on the outer wall of the sealing sleeve, and the limiting structure is formed by protruding or concave inward along the radial direction of the sealing sleeve.

8. The water distribution pump structure according to claim 6, characterized in that A first installation groove is formed along the circumferential direction on the conical surface of the outer wall of the water distribution valve core, and the radial inner part of the sealing sleeve is embedded into the first installation groove, and / or, A second installation groove is formed along the circumferential direction on the conical surface of the inner wall of the pump body, and the radial outer part of the sealing sleeve is embedded into the second installation groove.

9. A washing machine, comprising a plurality of washing tubs, characterized in that, It also includes the water distribution pump structure according to any one of claims 1-8, and multiple water outlets of the water distribution pump structure are respectively communicated with the water inlet pipelines of a washing tub.

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