A washing machine and a control method thereof

Abstract

The present application belongs to the technical field of washing machines, and discloses a washing machine and a control method thereof. The washing machine comprises a washing tub, a first drain hole is arranged on the bottom of the washing tub; a driving shaft is connected with the washing tub and drives the washing tub to rotate; a water blocking device is arranged outside the bottom of the washing tub around the driving shaft; a water sealing device is sleeved on the driving shaft and is rotatably connected with the water blocking device, the water sealing device and the water blocking device form a drain chamber which is communicated with the inside of the washing tub, the drain chamber is communicated with a drain device of the washing machine; a circulating filter pipeline is arranged, the water inlet end of the pipeline is communicated with the drain chamber, the water outlet end supplies water to the inside of the washing tub, and a circulating pump is arranged on the pipeline; and a filter device is arranged on the pipeline. In the present application, the water blocking device and the water sealing device cooperate to realize the communication between the circulating filter pipeline and the inside of the washing tub, and thus the washing machine which independently holds water in the washing tub realizes the circulating filter function.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of washing machines, in particular, relates to a washing machine and a control method thereof. BACKGROUND

[0002] In the process of washing clothes by the washing machine, due to the friction between clothes and clothes, and between clothes and the washing machine itself, lint will fall off the clothes and mix into the washing water. If the lint in the washing water cannot be removed, it may adhere to the surface of the clothes after the washing is completed, affecting the washing effect of the clothes. Therefore, a lint filter for filtering lint is installed on the existing washing machine, and the washing water is circulated through the lint filter during the washing process to remove the lint from the washing water. However, the traditional lint filter is generally arranged inside the washing tub, which occupies the space inside the washing tub and affects the actual available washing volume.

[0003] For the washing machine with the lint filter arranged outside the washing tub, since the washing tub rotates during the operation of the washing machine, the lint filter is generally directly communicated with a water containing tub outside the washing tub, and the circulation filtering of the washing water is realized through the mutual communication of the washing tub and the water containing tub. However, since the washing water can exist between the washing tub and the water containing tub, with the increase of the operation time of the washing machine, the dirt and lint carried in the washing water can be retained in the space between the washing tub and the water containing tub, which is difficult to clean, resulting in bacteria and odor generated after long-term use, affecting the hygiene of the washed clothes and harming the health of the user.

[0004] To solve this problem, the prior art proposes a washing machine without a dehydration hole arranged on the washing tub, so that the washing tub can independently contain the washing water during the washing process. However, at the same time, since there is no water between the washing tub and the water containing tub, or even some washing machines do not have the water containing tub, the circulation filtering mode of connecting the lint filter on the water containing tub is no longer applicable.

[0005] Therefore, the present application is proposed. SUMMARY

[0006] The technical problem to be solved by the present application is to overcome the shortcomings of the prior art, and to provide a washing machine and a control method thereof. The water blocking device and the water sealing device cooperate to form a drainage chamber communicating with the inside of the washing tub, and the circulation filtering pipeline provided with the filtering device can communicate with the inside of the washing tub through the drainage chamber, so that the washing machine with the washing tub independently containing water realizes the circulation filtering function.

[0007] To solve the above technical problems, the basic idea of the technical solution of the present application is as follows:

[0008] A washing machine comprises:

[0009] A washing tub, a first drainage hole is arranged on the bottom of the washing tub;

[0010] a drive shaft connected with the washing tub to drive the washing tub to rotate;

[0011] a water blocking device arranged outside the bottom of the washing tub around the drive shaft;

[0012] a water sealing device sleeved on the drive shaft and rotatably connected with the water blocking device, the water sealing device and the water blocking device forming a drainage chamber communicating with the inside of the washing tub, the drainage chamber communicating with a drainage device of the washing machine;

[0013] a circulating filtration pipeline, the water inlet end of which communicates with the drainage chamber and the water outlet end of which supplies water to the inside of the washing tub, a circulating pump being arranged on the circulating filtration pipeline;

[0014] a filtration device arranged on the circulating filtration pipeline.

[0015] Further, a mounting plate is arranged below the washing tub, the water sealing device is arranged on the mounting plate between the mounting plate and the bottom of the washing tub, a drainage opening is formed on the mounting plate, and the drainage chamber communicates with the drainage device through the drainage opening.

[0016] Further, the drainage device comprises a drainage pipeline and a drainage valve arranged on the drainage pipeline, the water inlet end of the drainage pipeline is connected with the drainage opening on the mounting plate, and the water inlet end of the circulating filtration pipeline is connected between the water inlet end of the drainage pipeline and the drainage valve.

[0017] Further, the water blocking device comprises a water blocking rib arranged outside the bottom of the washing tub and surrounding the periphery of the first drainage hole;

[0018] the drive shaft passes through the mounting plate to connect with the washing tub, the drainage opening is arranged eccentrically on the mounting plate, and the water sealing device comprises:

[0019] a water sealing part sleeved on the water blocking rib;

[0020] a connecting part extending outward from the outer wall of the water sealing part and connected with the mounting plate, the projection of the connecting part on the mounting plate covering the drainage opening;

[0021] the extension length of the connecting part on the side of the water sealing part close to the drainage opening is greater than the extension length of the connecting part on the side of the water sealing part away from the drainage opening;

[0022] Preferably, a sealing ring is arranged around the outer periphery of the connecting part between the connecting part and the mounting plate.

[0023] Further, a dynamic sealing member is arranged between the water blocking rib and the water sealing part, the dynamic sealing member is sleeved on the water blocking rib and in dynamic sealing contact with the outer wall of the water blocking rib, and the dynamic sealing member is sealingly connected with the water sealing part.

[0024] Preferably, the dynamic sealing member comprises:

[0025] a sealing lip, which is sleeved on the water blocking rib and in dynamic sealing contact with the outer wall of the water blocking rib;

[0026] a sealing body, which is annularly arranged at the outer periphery of the sealing lip and has an upper end extending inwardly to be connected with the sealing lip, and the sealing body is sealingly connected with the water sealing part;

[0027] a skeleton, which is embeddedly arranged inside the sealing body;

[0028] More preferably, the water sealing part has a side wall arranged in space with the outer wall of the water blocking rib, and a top wall extending from the top end of the side wall to the outer wall of the water blocking rib, and the sealing body is arranged below the top wall, and the upper surface of the sealing body is sealingly connected with the lower surface of the top wall.

[0029] Further, the water blocking device further comprises a water blocking cover, which is arranged at the upper end of the water blocking rib and fixedly connected with the bottom of the washing tub, and a second drain hole is arranged on the water blocking cover and in communication with the first drain hole;

[0030] Preferably, a sealing gasket is arranged between the water blocking cover and the bottom of the washing tub.

[0031] More preferably, the sealing gasket has an annular structure surrounding the periphery of the first drain hole.

[0032] Further, the water outlet end of the circulating filtration pipeline is connected with a water outlet device, and the water outlet of the water outlet device is located above the opening of the washing tub;

[0033] Preferably, the washing machine further comprises a collecting tub, and the washing tub is arranged inside the collecting tub; the opening of the collecting tub is higher than the opening of the washing tub, and an annular collecting tub cover is arranged at the opening of the collecting tub;

[0034] The collecting tub cover has a hollow water flow channel inside, the water outlet end of the circulating filtration pipeline is in communication with the water flow channel, and the water outlet of the water flow channel is located above the opening of the washing tub.

[0035] Further, the filtration device comprises:

[0036] a filtration cavity, which is provided with a water inlet and a filtered water outlet, and the water inlet and the filtered water outlet are connected with the circulating filtration pipeline;

[0037] a filtration mechanism, which is rotatably arranged in the filtration cavity;

[0038] a driving mechanism for driving the filtering mechanism to rotate in the filtering cavity;

[0039] Preferably, the filtering water outlet is parallel to the axis direction of the filtering mechanism.

[0040] Preferably, the filtering cavity is mounted on the base of the washing machine.

[0041] Alternatively, the washing machine further comprises a collecting tub, and the washing tub is arranged inside the collecting tub; the filtering cavity is mounted on the outer surface of the bottom of the collecting tub or on the outer surface of the wall of the collecting tub.

[0042] Alternatively, the washing machine further comprises a cabinet, and the washing tub is arranged inside the cabinet; the filtering cavity is mounted on the inner wall of the cabinet.

[0043] Further, a sewage outlet is arranged on the filtering cavity for discharging the filtering impurities; the sewage outlet is connected with a sewage pipeline, and a sewage control valve is arranged on the sewage pipeline for controlling the opening and closing of the sewage pipeline.

[0044] The sewage pipeline is communicated with the drainage device of the washing machine; or the washing machine further comprises a recycling device for collecting the filtering impurities, and the sewage pipeline is communicated with the recycling device.

[0045] Preferably, when the sewage control valve is opened, the sewage pipeline is unidirectionally conducted from the sewage outlet to the drainage device / recycling device.

[0046] Another object of the present application is to provide a control method of the washing machine, comprising: starting the circulating pump, guiding the water in the washing tub into the circulating filtering pipeline through the drainage cavity, and guiding the water back to the washing tub after removing the filtering impurities by the filtering device.

[0047] After the above technical scheme is adopted, the present application has the following beneficial effects compared with the prior art.

[0048] In the present application, the washing tub can independently contain water, the water blocking device is arranged on the bottom of the washing tub, and the water blocking device and the water sealing device dynamically seal to form the drainage cavity; the circulating filtering pipeline provided with the filtering device is communicated with the inside of the washing tub through the drainage cavity, thereby realizing the washing water circulating filtering function of the washing machine.

[0049] In the present application, the dynamic sealing element is arranged between the water blocking device and the water sealing device, the water blocking device can synchronously rotate with the washing tub, and the sealing performance between the water blocking device and the water sealing device is good, thereby preventing the washing tub from leaking. The sealing ring between the water sealing device and the mounting plate and the sealing gasket between the water blocking device and the bottom of the washing tub further enhance the sealing performance, thereby ensuring that the washing tub, the drainage cavity and the drainage device do not leak.

[0050] In the present application, the water outlet device is connected to the water outlet end of the circulating filtering pipeline, and the filtered water is returned to the inside of the washing tub from above the tub opening of the washing tub, so that the spraying function is realized while the washing water is filtered, and the washing effect of the clothes is improved.

[0051] In the present application, the filtering mechanism in the filtering device can rotate in the filtering cavity under the driving of the driving mechanism, and the filtering impurities are peeled off from the filtering mechanism under the centrifugal force generated by the rotation and the impact force of the agitated water flow in the filtering cavity, so that the self-cleaning function of the filtering device is realized, and the filtering impurities are removed with high efficiency.

[0052] The specific embodiments of the present application will be further described in detail below with reference to the accompanying drawings. BRIEF DESCRIPTION OF DRAWINGS

[0053] The accompanying drawings, which are part of the present application, serve to provide a further understanding of the present application, and the schematic embodiments of the present application and the descriptions thereof serve to explain the present application, but do not constitute an improper limitation on the present application. Obviously, the accompanying drawings described below are only some embodiments, and other drawings can be obtained by those skilled in the art without creative labor on the basis of the drawings. In the drawings:

[0054] Figure 1 is a structural schematic diagram of a washing machine in an embodiment of the present application;

[0055] Figure 2 is a partial enlarged schematic diagram of the bottom of a washing tub in an embodiment of the present application;

[0056] Figure 3 is a structural schematic diagram of a dynamic sealing member in an embodiment of the present application;

[0057] Figure 4 is an enlarged schematic diagram of the filtering device and the surrounding partial structure in an embodiment of the present application;

[0058] Figure 5 is an exploded view of part of the structure of a washing machine in an embodiment of the present application;

[0059] Figure 6 is a structural schematic diagram of a water sealing device and a water blocking device in an embodiment of the present application;

[0060] Figure 7 is a structural schematic diagram of a filtering device in an embodiment of the present application;

[0061] Figure 8 is a schematic diagram of section A-A in the present application. Figure 7

[0062] ​In the figure: 100, washing barrel; 110, driving shaft; 210, drainage pipeline; 211, drainage valve; 220, circulation pipeline; 221, circulation pump; 230, backwater pipeline; 231, water outlet device; 240, blowdown pipeline; 241, blowdown control valve; 300, collecting barrel; 310, mounting plate; 311, drainage opening; 320, collecting barrel cover; 410, water blocking device; 411, water blocking cover; 412, water blocking rib; 413, second drainage hole; 414, sealing gasket; 420, water sealing device; 421, water sealing part; 422, connecting part; 423, sealing ring; 430, dynamic sealing element; 431, sealing lip; 432, sealing body; 433, skeleton; 500, box body;

[0063] 600, filtering device; 601, first limiting surface; 602, second limiting surface; 603, third limiting surface; 604, fourth limiting surface; 605, fifth limiting surface; 606, sixth limiting surface; 610, filtering cavity; 6101, water inlet; 6102, filtered water outlet; 6103, blowdown opening; 6104, mounting opening; 611, sealing support part; 612, sleeve part; 613, reinforcing rib; 620, filtering mechanism; 621, water outlet connector; 622, rotating support part; 623, filter screen support part; 624, motor mounting part; 625, filter screen; 631, first bearing; 632, second bearing; 641, first sealing element; 642, second sealing element; 643, third sealing element; 650, filtering cavity flange; 651, pipeline connecting part; 652, plug-in part; 653, through opening; 660, driving mechanism.

[0064] It should be noted that the drawings and the written description are not intended to limit the scope of the present application in any way. DETAILED DESCRIPTION

[0065] In order to make the purpose, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments will be described clearly and completely below with reference to the drawings in the embodiments of the present application. The following embodiments are used to illustrate the present application but not to limit the scope of the present application.

[0066] In the description of the present application, it should be noted that the terms "upper", "lower", "front", "back", "left", "right", "vertical", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0067] In the description of the present application, it should be noted that unless otherwise explicitly specified and limited, the terms "mounting", "connection", "linking" should be understood in a broad sense, for example, it can be fixed connection, or detachable connection, or integrally connected; it can be mechanical connection, or electrical connection; it can be directly connected, or indirectly connected through intermediate medium. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0068] Embodiment one

[0069] As shown in the figure, the washing machine described in the embodiment comprises: Figures 1 to 4

[0070] A washing tub 100, a first drain hole is arranged on the bottom of the washing tub 100;

[0071] A driving shaft 110, connected with the washing tub 100, drives the washing tub 100 to rotate;

[0072] A water blocking device 410, arranged outside the bottom of the washing tub 100 around the driving shaft 110;

[0073] A water sealing device 420, sleeved on the driving shaft 110, rotatably connected with the water blocking device 410, the water sealing device 420 and the water blocking device 410 form a drain chamber which is in communication with the inside of the washing tub 100, and the drain chamber is in communication with the drain device of the washing machine;

[0074] A circulating filtration pipeline, the water inlet end of which is in communication with the drain chamber, and the water outlet end supplies water to the inside of the washing tub 100, and a circulating pump 221 is arranged on the circulating filtration pipeline;

[0075] A filtration device 600, arranged on the circulating filtration pipeline.

[0076] In the embodiment, no dehydration hole is arranged on the wall of the washing tub 100 at least at a height lower than the highest water level, so that the washing tub 100 can independently hold water during washing and rinsing, avoiding the storage of water between the inner and outer tubs of the traditional washing machine during washing, saving the amount of washing water, and being conducive to the cleanliness and hygiene of the washing machine. Through the arrangement of the water blocking device 410 and the water sealing device 420, the two form a drain chamber to directly communicate the inside of the washing tub 100 with the drain device. The water blocking device 410 can rotate with the washing tub 100, and the water sealing device 420 is fixedly arranged inside the washing machine, and the two have a dynamic sealing structure between them to prevent washing water from leaking out of the connection between the two.

[0077] ​The drainage device has two working states of opening and closing. During washing and rinsing, the drainage device is closed, and the washing water is blocked in the washing tub 100 and the drainage chamber. When draining, the drainage device is opened, and the water in the washing tub 100 can be drained from the washing machine through the drainage chamber.

[0078] The washing machine is also provided with a circulating filtration pipeline, which is provided with a filtration device 600 and can filter the washing water flowing therethrough to remove lint and other filtration impurities carried in the washing water. The water inlet end of the circulating filtration pipeline is communicated with the drainage chamber, that is, the purpose of guiding the washing water out of the washing tub 100, filtering the washing water through the filtration device 600, and then conveying the filtered washing water back to the washing tub 100 is achieved, and the problem that the washing tub 100 cannot be directly connected with the circulating filtration pipeline due to the need for rotation is solved. Through the above setting mode, the washing machine with the washing tub 100 independently containing water can also realize the function of circulating and filtering the washing water, thereby reducing the content of lint in the washing water and improving the washing effect.

[0079] In a further scheme of the embodiment, the washing machine further includes a mounting plate 310 arranged below the washing tub 100. The water sealing device 420 is arranged on the mounting plate 310 and located between the mounting plate 310 and the bottom of the washing tub 100. A drainage opening 311 is formed in the mounting plate 310, and the drainage chamber is communicated with the drainage device through the drainage opening 311.

[0080] Further, the drainage device includes a drainage pipeline 210 and a drainage valve 211 arranged on the drainage pipeline 210, and the water inlet end of the drainage pipeline 210 is connected with the drainage opening 311 on the mounting plate 310. The water inlet end of the circulating filtration pipeline is connected between the water inlet end of the drainage pipeline 210 and the drainage valve 211.

[0081] During washing and rinsing, the drainage valve 211 is closed, and the washing water is blocked in the washing tub 100, the drainage chamber, and the drainage pipeline 210 upstream of the drainage valve 211. The water inlet end of the circulating filtration pipeline is connected between the water inlet end of the drainage pipeline 210 and the drainage valve 211, and thus can be fixedly arranged inside the washing machine. When the circulating pump 221 is turned on, the washing water is pumped out of the washing tub 100, filtered through the filtration device 600, and then returned to the washing tub 100. When draining, the drainage valve 211 is opened, the water inlet end and the water outlet end of the drainage pipeline 210 are communicated, and the water in the washing tub 100 can be drained out of the washing machine through the drainage pipeline 210.

[0082] Specifically, the circulating filtration pipeline of the embodiment includes:

[0083] The circulating pipeline 220 has a water inlet end connected with the drainage pipeline 210 and a water outlet end connected with the water inlet port 6101 of the filtration device 600, and the circulating pump 221 is arranged on the circulating pipeline 220.

[0084] The water return pipeline 230 has an inlet end connected to the filtered water outlet 6102 of the filtering device 600 and an outlet end in communication with the opening of the washing tub 100 to return water to the interior of the washing tub 100 through the opening of the washing tub 100.

[0085] In another aspect of the embodiment, the inlet end of the circulating filtering pipeline, i.e. the inlet end of the circulating pipeline, can also be connected to the water sealing device to be in direct communication with the drain chamber. Since the water sealing device is fixed in the washing machine, the circulating filtering pipeline can also be fixedly arranged in the washing machine.

[0086] In a further aspect of the embodiment, the outlet end of the circulating filtering pipeline, i.e. the outlet end of the water return pipeline 230, is connected to the water outlet device 231, and the water outlet of the water outlet device 231 is located above the opening of the washing tub 100.

[0087] The water return pipeline 230 delivers the filtered water to the water outlet device 231, and the filtered water flows out of the water outlet of the water outlet device 231 and into the interior of the washing tub 100 through the opening of the washing tub 100. The filtered water also realizes a spraying function when entering the washing tub 100, which further improves the washing effect.

[0088] In the embodiment, the water blocking device 410 includes a water blocking rib 412 surrounding the periphery of the first drain hole on the outer side of the bottom of the washing tub 100. The drive shaft 110 passes through the mounting plate 310 to be connected to the washing tub 100, and the drain opening 311 is eccentrically arranged on the mounting plate 310.

[0089] The water sealing device 420 includes:

[0090] The water sealing portion 421 is sleeved on the water blocking rib 412.

[0091] The connecting portion 422 extends outward from the outer wall of the water sealing portion 421 and is connected to the mounting plate 310, and the projection of the connecting portion 422 on the mounting plate 310 covers the drain opening 311.

[0092] In the embodiment, the extension length of the connecting portion 422 on the side of the water sealing portion 421 close to the drain opening 311 is greater than the extension length of the connecting portion 422 on the side of the water sealing portion 421 away from the drain opening 311, so as to realize the coverage of the projection of the connecting portion 422 on the drain opening 311.

[0093] In detail, the connecting portion 422 has a stepped structure. On the side away from the drain port 311, the connecting portion 422 extends horizontally from the outer periphery of the water sealing portion 421 for a certain distance, then extends downward, and then extends horizontally again, and finally extends downward to the upper surface of the mounting plate 310. On the side close to the drain port 311, the connecting portion 422 extends downward from the outer periphery of the water sealing portion 421 for a certain distance, then extends downward to form a step, and then extends horizontally until the projection of the connecting portion 422 covers the drain port 311, and finally extends downward to the upper surface of the mounting plate 310.

[0094] In the preferred scheme of the embodiment, a sealing ring 423 is arranged around the outer periphery of the connecting portion 422 between the connecting portion 422 and the mounting plate 310. Specifically, the sealing ring 423 is arranged between the bottom surface of the vertical downward extending side wall of the connecting portion 422 and the upper surface of the mounting plate 310, and the shape of the sealing ring 423 matches the shape of the projection of the connecting portion 422 on the outer periphery of the mounting plate 310.

[0095] In the above scheme, the water blocking device 410, the water sealing device 420 and the mounting plate 310 jointly enclose the drain chamber, the water sealing device 420 and the mounting plate 310 are two independent parts, and the sealing ring 423 is arranged to seal the space between the water sealing device 420 and the mounting plate 310, thereby enhancing the sealing performance of the drain chamber and preventing water leakage caused by the gap between the water sealing device 420 and the mounting plate 310.

[0096] In a further scheme of the embodiment, a dynamic sealing member 430 is arranged between the water blocking rib 412 and the water sealing portion 421, the dynamic sealing member 430 is sleeved on the water blocking rib 412 and in dynamic sealing contact with the outer wall of the water blocking rib 412, and the dynamic sealing member 430 is sealingly connected with the water sealing portion 421.

[0097] Preferably, the dynamic sealing member 430 comprises:

[0098] a sealing lip 431 sleeved on the water blocking rib 412 and in dynamic sealing contact with the outer wall of the water blocking rib 412;

[0099] a sealing body 432 arranged around the outer periphery of the sealing lip 431 and extending inwardly at the upper end to be connected with the sealing lip 431, the sealing body 432 being sealingly connected with the water sealing portion 421;

[0100] a framework 433 embedded in the interior of the sealing body 432.

[0101] More preferably, the water sealing portion 421 has a side wall spaced apart from the outer wall of the water blocking rib 412, and a top wall extending from the top end of the side wall to the outer wall of the water blocking rib 412. The sealing body 432 is arranged below the top wall, and the upper surface of the sealing body 432 is sealingly connected with the lower surface of the top wall.

[0102] In the embodiment, the dynamic sealing member 430 has a structure of embedding a metal skeleton 433 in an elastic sealing body 432. The skeleton 433 has a similar structure to the sealing body 432, that is, also has a part arranged around the outer periphery of the sealing lip 431 and a part extending inwardly at the upper end, which can support the sealing body 432 and keep the bending structure of the whole sealing body 432 from changing obviously. In this way, the deformation of the sealing body 432 does not affect the dynamic sealing contact between the sealing lip 431 and the outer wall of the water blocking rib 412, thereby avoiding water leakage.

[0103] The water blocking device 410 of the embodiment further includes a water blocking cover 411 arranged on the upper end of the water blocking rib 412 and fixedly connected to the bottom of the washing tub 100. The water blocking cover 411 is provided with a second drain hole 413 communicating with the first drain hole on the bottom of the washing tub 100.

[0104] Specifically, the second drain hole 413 on the water blocking cover 411 is arranged in one-to-one correspondence with the first drain hole on the bottom of the washing tub 100. The inside of the washing tub 100 communicates with the drain chamber through the first drain hole and the second drain hole 413.

[0105] In the preferred scheme of the embodiment, a sealing gasket 414 is arranged between the water blocking cover 411 and the bottom of the washing tub 100.

[0106] More preferably, the sealing gasket 414 has an annular structure surrounding the periphery of the first drain hole.

[0107] In the above scheme, the water blocking device 410 and the washing tub 100 are arranged separately and assembled into one body later. The connection between the washing tub 100 and the water blocking device 410 is realized through the water blocking cover 411, which makes the assembly operation easier. The arrangement of the sealing gasket 414 prevents water leakage between the washing tub 100 and the water blocking device 410, further improving the sealing performance of the whole washing tub 100 and drain chamber.

[0108] In a further scheme of the embodiment, the filter device 600 includes:

[0109] A filter cavity 610, on which a water inlet 6101 and a filtered water outlet 6102 are arranged, and the water inlet 6101 and the filtered water outlet 6102 are connected to the circulating filter pipeline;

[0110] A filter mechanism 620 rotatably arranged in the filter cavity 610;

[0111] A driving mechanism 660 driving the filter mechanism 620 to rotate in the filter cavity 610.

[0112] Specifically, as shown in Figure 7 and Figure 8As shown, the filtering mechanism 620 comprises a filtering screen support and a filtering screen 625, and the filtering screen support specifically comprises:

[0113] The filtering screen support part 623 is located inside the filtering cavity 610, and the filtering screen 625 covers the surface of the filtering screen support part 623, thereby separating the filtering cavity 610 into an outer cavity and an inner cavity;

[0114] The water outlet joint 621 is in communication with the inner cavity.

[0115] When the circulating pump 221 is turned on, the washing water to be filtered is transported to the filtering device 600, enters the outer cavity inside the filtering cavity 610 from the water inlet 6101, and when passing through the filtering mechanism 620, the filtering impurities in the washing water are blocked by the filtering screen 625 and adhere to the surface of the filtering screen 625, so that the washing water entering the inner cavity no longer contains the filtering impurities such as wire scraps. The filtered clean washing water flows out of the filtering cavity 610 through the filtering water outlet 6102 via the water outlet joint 621.

[0116] Further, the filtering cavity 610 is further provided with a sewage outlet 6103 for discharging the filtering impurities outside.

[0117] When the filtering device 600 needs to be cleaned, the filtering mechanism 620 is driven to rotate in the filtering cavity 610 by the driving mechanism 660 such as a motor, and the residual water in the filtering cavity 610 is agitated, so that the filtering impurities on the surface of the filtering screen 625 are stripped off from the filtering screen 625 under the action of centrifugal force and turbulent water flow, and then mixed into the water in the filtering cavity 610 and discharged from the filtering cavity 610 through the sewage outlet 6103.

[0118] Preferably, the orientation of the filtering water outlet 6102 is parallel to the axis direction of the filtering mechanism 620. Specifically, the water outlet joint 621 is arranged at one end of the filtering screen support part 623, and the axis of the water outlet joint 621 coincides with the axis of the filtering mechanism 620. The water outlet joint 621 is rotatably and sealingly connected with the filtering water outlet 6102.

[0119] In this embodiment, the axis of the filtering device 600 is vertically arranged, the filtering water outlet 6102 is vertically arranged upwards, and the water inlet 6101 and the sewage outlet 6103 are both horizontally arranged. The washing water to be filtered enters from the side of the filtering cavity 610, and can flow out from the filtering water outlet 6102 at the top under the driving action of the circulating pump 221, which is beneficial to improve the filtering water pressure and enhance the filtering effect. Since the filtering impurities tend to gather at the bottom of the filtering cavity 610 after being stripped off from the filtering screen 625, the sewage outlet 6103 is preferably arranged close to the bottom of the filtering cavity 610, which is beneficial to fully discharge the sewage and filtering impurities.

[0120] The washing machine of the embodiment further comprises a cabinet 500, and the washing tub 100, the mounting plate 310, the drainage device, the circulation filtering pipeline and the filtering device 600 are all arranged in the cabinet 500. The filtering device 600 is specifically arranged between the tub wall of the washing tub 100 and the inner wall of the cabinet 500.

[0121] In the embodiment, the blow-off port 6103 is connected with the blow-off pipeline 240, and a blow-off control valve 241 is arranged on the blow-off pipeline 240 and used for controlling the opening and closing of the blow-off pipeline 240. The blow-off pipeline 240 is in communication with the drainage device of the washing machine.

[0122] In the above scheme, the blow-off control valve 241 is closed in the circulation filtering process, and the blow-off pipeline 240 is cut off, so that the washing water entering the filtering device 600 is all discharged through the filtered water outlet 6102, and the filtering efficiency of the washing water is ensured. Only when it is necessary to discharge the sewage and the impurities, the blow-off control valve 241 is opened to guide the blow-off pipeline 240. The blow-off pipeline 240 is in communication with the drainage device, and the sewage carrying the impurities can be discharged from the washing machine through the drainage device.

[0123] Specifically, the water outlet end of the blow-off pipeline 240 is connected with the drainage pipeline 210 and located between the drainage valve 211 and the water outlet end of the drainage pipeline 210.

[0124] In the preferred scheme of the embodiment, the blow-off control valve 241 is opened, and the blow-off pipeline 240 is unidirectionally guided from the blow-off port 6103 to the drainage device, i.e., the drainage pipeline 210. The blow-off control valve 241 is arranged as a one-way valve, so that the backflow of the sewage in the blow-off pipeline 240 can be prevented.

[0125] Further, a backwater control valve (not shown in the figure) is arranged on the backwater pipeline 230 and used for controlling the opening and closing of the backwater pipeline 230. When the washing water is circulated and filtered, the backwater control valve is opened to guide the backwater pipeline 230. When the sewage is discharged from the filtering device 600, the backwater control valve is closed to cut off the backwater pipeline 230, the blow-off control valve 241 is opened, and the sewage in the filtering cavity 610 can be discharged into the blow-off pipeline 240 through the blow-off port 6103 and then into the drainage pipeline 210 to be discharged from the washing machine.

[0126] Through the cooperation of the backwater control valve and the blow-off control valve 241, it can be ensured that the water entering the filtering device 600 is discharged from the corresponding water outlet, so that it can be controlled whether the filtering device 600 is currently used for the circulation filtering operation of the washing water or the discharge of the sewage in the filtering device 600.

[0127] The embodiment further provides a control method of the washing machine, and the circulation filtering operation, the self-cleaning operation and the blow-off operation are respectively performed in the process that the washing machine runs the washing program.

[0128] Specifically, the circulating filtering operation includes: the blow-off control valve 241 is closed, the circulating pump 221 is started, the water in the washing tub 100 is guided into the circulating filtering pipeline through the drain chamber, and after the filtered impurities are removed by the filtering device 600, the water is returned to the washing tub 100.

[0129] The self-cleaning operation includes: the blow-off control valve 241 is opened to guide the blow-off pipeline 240, the circulating pump 221 is started, the water in the washing tub 100 is guided into the filtering device 600 through the drain chamber, and after the filtering device 600 is cleaned, the water is discharged into the drain pipeline 210 through the blow-off pipeline 240. The operation further includes: the driving mechanism 660 is controlled to drive the filtering mechanism 620 to rotate in the filtering cavity 610.

[0130] The blow-off operation includes: the blow-off control valve 241 is opened to guide the blow-off pipeline 240, and the sewage carrying the filtered impurities in the filtering device 600 is discharged into the drain pipeline 210. When the blow-off operation is performed, the driving mechanism 660 can be controlled to be started to drive the filtering mechanism 620 to rotate, or the driving mechanism 660 can not be started, so that the filtering mechanism 620 remains stationary in the filtering cavity 610.

[0131] In the embodiment, the circulating filtering operation is performed in the washing stage and the one or more rinsing stages of the washing program, and the self-cleaning operation and / or the blow-off operation are performed at least once in one complete washing program. Preferably, the self-cleaning operation and the blow-off operation are performed at the end of the washing stage and each rinsing stage.

[0132] Specifically, the circulating filtering operation is started after water is supplied for a certain period of time at the beginning of the washing stage and each rinsing stage. The circulating filtering operation is continuously performed until the washing or rinsing stage is close to completion, i.e., before water is drained, the blow-off control valve 241 is opened and the driving mechanism 660 is started to perform the self-cleaning operation. After the self-cleaning operation is performed for a certain period of time, the washing machine performs the blow-off operation.

[0133] In detail, after the washing machine starts to supply water, the water level in the washing tub 100 is detected. When the water level reaches a preset water level, the circulating pump 221 is started to perform the circulating filtering operation. In this way, it can be prevented that the water in the washing tub 100 is too little, and air is sucked into the circulating pump 221 to generate operating noise.

[0134] In the embodiment, the washing tub 100 can independently hold water, the water blocking device 410, the water sealing device 420 and the mounting plate 310 are arranged below the washing tub 100, and a drainage chamber in communication with the inside of the washing tub 100 can be formed. The circulation filtering pipeline provided with the filtering device 600 is in communication with the drainage chamber, so that the filtering device 600 can be fixedly arranged in the washing machine and the purpose of filtering the washing water discharged from the washing tub 100 can be achieved. The filtered water enters the inside of the washing tub 100 from the tub opening of the washing tub 100, and has a spraying effect. Through the design of the sealing structure between the water blocking device 410, the water sealing device 420 and the mounting plate 310, the sealing performance is reliable, the manufacturing cost is low, the assembly operation is simple, the washing machine with the washing tub 100 independently holding water can realize the functions of circulating filtering the washing water and spraying, and the washing effect is improved.

[0135] Embodiment two

[0136] The difference between the embodiment and the above-mentioned embodiment one is that the washing machine further comprises a recycling device for collecting filtering impurities, and the drainage pipeline is in communication with the recycling device.

[0137] Through the arrangement of the recycling device for collecting the filtering impurities discharged from the filtering device, instead of directly discharging the filtering impurities from the washing machine with the sewage, the fine thread scraps in the filtering impurities are prevented from being discharged with the water flow and entering the ecological cycle, and further harm to the ecological environment and human health is avoided.

[0138] In the embodiment, the drainage control valve is arranged as a one-way valve, the drainage control valve is opened, the drainage pipeline is unidirectionally communicated from the drainage opening to the recycling device, and the backflow of the sewage in the drainage pipeline is prevented.

[0139] In the specific scheme of the embodiment, the recycling device comprises:

[0140] a shell having a recycling chamber in the inside;

[0141] a filtering assembly arranged in the recycling chamber and separating the recycling chamber into a first chamber and a second chamber;

[0142] The drainage pipeline is in communication with the first chamber, the sewage carrying the filtering impurities enters the first chamber, and after being filtered by the filtering assembly, enters the second chamber, and the filtering impurities are collected in the first chamber.

[0143] In the above scheme, the filter assembly is arranged in the recycling device to filter the sewage discharged by the filtering device and separate the filtering impurities from the water. The recycling device is divided into a first chamber and a second chamber by the filter assembly. The filtering impurities in the sewage are blocked by the filter assembly, so that the filtering impurities are collected on the surface of the filter assembly in the first chamber, and the filtered clean water is collected in the second chamber. The user can directly collect and process the separated filtering impurities, avoiding the situation that the filtering impurities are mixed in the water and cannot be effectively processed.

[0144] In the embodiment, the recycling device is inserted / extracted from the cabinet of the washing machine. The user can extract the recycling device from the cabinet for cleaning.

[0145] Specifically, the shell of the recycling device is inserted / extracted from the cabinet, and the upper side of the shell is open. When the user extracts the shell from the cabinet, the filtering impurities adhering to the upper surface of the filter assembly can be cleaned through the opening of the upper side of the shell. The filter assembly is preferably detachably connected with the shell. The user can detach the filter assembly from the inside of the shell and take it out for cleaning, which is more convenient to operate.

[0146] In the preferred scheme of the embodiment, the second chamber in the shell is provided with a water outlet. The clean water in the second chamber can be discharged from the recycling device in time, avoiding the overflow of the recycling device when a large amount of sewage is discharged by the filtering device. Also, the problem that the volume of the recycling device is increased to prevent the overflow of the recycling device, resulting in a large space occupied by the recycling device in the washing machine, is avoided.

[0147] On the other hand, the water in the second chamber can be automatically discharged through the water outlet. When the user cleans the recycling device, he only needs to clean the filtering impurities on the filter assembly, without manually pouring out the clean water in the second chamber. When the filter assembly is detachably installed in the shell, the user does not even need to completely take the shell out of the cabinet of the washing machine. He only needs to take out the filter assembly for cleaning, which is more convenient to operate.

[0148] Further, the water outlet on the second chamber can be connected with the drainage device of the washing machine through a pipeline, so that the filtered clean water is directly discharged from the washing machine. Since the filtering impurities have been filtered out by the filter assembly, fine lint will not be discharged into the ecological cycle with the water flow.

[0149] In the embodiment, a pipeline can also be arranged to guide the clean water in the second chamber back into the washing tub, so as to realize the reuse of the filtered clean water, thereby reducing the water inflow required when the washing machine continues to run, and achieving the purpose of saving water consumption of the washing machine. The water outlet on the second chamber is connected with a conveying pipeline to convey the clean water to the opening of the washing tub, and then the clean water enters the washing tub in the form of spraying water to spray the clothes in the washing tub, which can also improve the washing effect.

[0150] In this embodiment, the recycling device is arranged on the washing machine, and the sewage discharged by the filtering device enters the recycling device instead of being directly discharged from the washing machine, so that the fine lint carried by the sewage is prevented from entering the ecological cycle. Through the design of the structure of the recycling device, the filtering impurities can be separated from the water, and the user can more conveniently process the filtering impurities. The clean water from which the filtering impurities are removed can be directly discharged from the washing machine or introduced into the washing tub for reuse, which is beneficial to saving water.

[0151] Embodiment three

[0152] As shown in Figures 1 to 6 , this embodiment is a further limitation of the above-mentioned embodiment one, and the washing machine further comprises a water collecting tub 300, and the washing tub 100 is arranged inside the water collecting tub 300. The mounting plate 310 described in embodiment one is the bottom of the water collecting tub 300.

[0153] In this embodiment, the opening of the water collecting tub 300 is higher than the opening of the washing tub 100, and the water collecting tub cover 320 in the annular structure is arranged at the opening of the water collecting tub 300. The water collecting tub cover 320 has a hollow water flow channel inside, so that the water collecting tub cover 320 serves as the water outlet device 231 connected with the water outlet end of the circulating filtering pipeline.

[0154] The water outlet end of the circulating filtering pipeline, that is, the water outlet end of the backwater pipeline 230, is communicated with the water flow channel, and the water outlet of the water flow channel is located above the opening of the washing tub 100, so that the backwater from the opening of the washing tub 100 to the inside of the washing tub 100 can realize the spraying effect on the clothes in the tub.

[0155] In this embodiment, the inner ring side of the annular structure of the water collecting tub cover 320 falls into the opening range of the washing tub 100 along the vertical direction. The water flow channel inside the water collecting tub cover 320 preferably extends along the radial direction of the water collecting tub 300, and the water outlet of the water flow channel is located on the inner wall of the annular structure of the water collecting tub cover 320. After the filtered water flows out from the backwater pipeline 230, it flows in the water flow channel along the radial direction of the water collecting tub 300 from outside to inside, and after flowing out from the water outlet, it can form a larger spraying range due to the influence of inertia.

[0156] A plurality of water outlets on the water collecting tub cover 320 can be communicated with the backwater pipeline 230 through the water flow channel, which can further increase the spraying range and enhance the spraying effect.

[0157] During the circulating filtering process, the rotation of the washing tub 100 is controlled, so that the relative rotation between the washing tub 100 and the water collecting tub cover 320 is generated, and the filtered water can be more uniformly sprayed on the clothes in the tub, so as to further improve the spraying effect.

[0158] In this embodiment, the water collecting barrel cover 320 is arranged at the barrel opening of the water collecting barrel 300 as the water outlet device 231 of the filtered washing water, and through the design of the internal structure of the water collecting barrel cover 320, the filtered backwater can be used to realize large-scale spraying on the clothes in the barrel, the spraying effect is uniform, and the washing effect of the clothes can be improved.

[0159] Embodiment Four

[0160] The difference between this embodiment and the above-mentioned embodiment three lies in that the installation position of the filtering device in the washing machine is different.

[0161] This embodiment provides the following three different specific schemes.

[0162] Scheme One, the filtering cavity of the filtering device is installed on the base of the washing machine.

[0163] Scheme Two, the filtering cavity of the filtering device is installed on the outer surface of the barrel bottom of the water collecting barrel or the outer surface of the barrel wall of the water collecting barrel.

[0164] Scheme Three, the filtering cavity of the filtering device is installed on the inner wall of the box body.

[0165] Unlike the mode that the filtering device is connected only by connecting the circulating filtering pipeline in the embodiment three, the filtering cavity of the filtering device is directly installed on the relatively more stable structure inside the base of the washing machine, the water collecting barrel or the box body in this embodiment, so as to avoid the situation that the filtering device shakes greatly in the washing barrel, and the connection structure of the filtering device and the circulating filtering pipeline is loose.

[0166] Embodiment Five

[0167] The difference between this embodiment and the above-mentioned embodiment three lies in that the axis of the filtering mechanism is arranged horizontally.

[0168] Specifically, the orientation of the filtered water outlet on the filtering cavity is horizontal, the water inlet is vertically arranged upwards, and the sewage outlet is vertically arranged downwards. The washing water to be filtered and the water used for flushing the filtering mechanism when performing the self-cleaning operation are all entered from the top of the filtering cavity, and the water flow can smoothly flow out from the filtered water outlet or the sewage outlet under the action of its own gravity. The sewage outlet is arranged at the bottom of the filtering cavity and discharges the sewage carrying the filtering impurities downwards. Since the filtering impurities tend to gather at the bottom of the filtering cavity after being stripped from the filter screen, it is beneficial to fully discharge the filtering impurities.

[0169] In this embodiment, the other structures and control methods of the washing machine are the same as those in the embodiment three, and also have similar effects to the embodiment three.

[0170] Embodiment Six

[0171] As Figure 7 and Figure 8As shown, the embodiment provides a filtering device 600 applied to the above-mentioned embodiments.

[0172] Specifically, the filtering device 600 comprises:

[0173] a filtering cavity 610 having a water inlet 6101 and a filtered water outlet 6102, and a sealing support part 611 formed by extending the outer periphery of the filtered water outlet 6102 outside the filtering cavity 610;

[0174] a filtering mechanism 620 rotatably arranged inside the filtering cavity 610 and having a water outlet connector 621 inserted in the sealing support part 611 at one end, and the water outlet connector 621 being rotatably and sealingly connected with the sealing support part 611;

[0175] a first bearing 631 sleeved on the water outlet connector 621;

[0176] a first sealing part 641 arranged on the side of the first bearing 631 facing the inside of the filtering cavity 610, and blocking the gap between the water outlet connector 621 and the sealing support part 611.

[0177] In detail, the filtering mechanism 620 comprises a filtering screen support and a filtering screen 625, wherein the filtering screen support comprises:

[0178] a filtering screen support part 623 located inside the filtering cavity 610, and the filtering screen 625 covering the surface of the filtering screen support part 623;

[0179] the water outlet connector 621 arranged at the left end of the filtering screen support part 623 and rotatably inserted in the sealing support part 611;

[0180] a rotating support part 622 arranged at the right end of the filtering screen support part 623 and rotatably connected with the filtering cavity 610.

[0181] In the above-mentioned scheme, the first bearing 631 is arranged between the water outlet connector 621 and the sealing support part 611 to support the water outlet connector 621, so that the rotation of the water outlet connector 621 in the sealing support part 611 is smoother, and the structure is stable, which can ensure the stable rotation of the filtering mechanism 620 in the filtering cavity 610. The first sealing part 641 is arranged at the right side of the first bearing 631, so that the washing water in the filtering cavity 610 cannot enter the gap between the water outlet connector 621 and the sealing support part 611, preventing the first bearing 631 from contacting water and avoiding the failure of the first bearing 631, and ensuring the effect of the first bearing 631. At the same time, the first sealing part 641 also prevents the unfiltered washing water from flowing out from the filtered water outlet 6102 through the sealing support part 611, which affects the cleaning efficiency of the filtering device 600 on the thread scraps.

[0182] In the specific scheme of the embodiment, the first sealing member 641 is sleeved on the water outlet joint 621, the inner wall of the first sealing member 641 is in sealing connection with the outer wall of the water outlet joint 621, and the outer wall of the first sealing member 641 is in rotatable sealing connection with the inner wall of the sealing support part 611.

[0183] In the further scheme of the embodiment, the filtering device 600 further comprises a second sealing member 642, which is arranged on the side of the first bearing 631 away from the inside of the filtering cavity 610 and blocks the gap between the water outlet joint 621 and the sealing support part 611.

[0184] Specifically, the second sealing member 642 is sleeved on the water outlet joint 621, the inner wall of the second sealing member 642 is in sealing connection with the outer wall of the water outlet joint 621, and the outer wall of the second sealing member 642 is in rotatable sealing connection with the inner wall of the sealing support part 611.

[0185] In the above scheme, the left side of the first bearing 631 is further provided with the second sealing member 642, and the water flowing out through the water outlet joint 621 can be blocked by the second sealing member 642 and will not contact the first bearing 631. The first bearing 631 is located between the first sealing member 641 and the second sealing member 642, which maximizes the installation environment of the first bearing 631 without water, avoiding the rusting of the first bearing 631 due to water, and affecting the smoothness of the rotation of the filtering mechanism 620.

[0186] In the further scheme of the embodiment, the inner wall of the sealing support part 611 has a stepped structure, and the first limiting surface 601, the second limiting surface 602 and the third limiting surface 603 with annular structures and gradually decreasing inner diameters are sequentially formed from one end of the sealing support part 611 to the outside of the filtering cavity 610.

[0187] The surface of the first sealing member 641 facing the outside of the filtering cavity 610 abuts against the first limiting surface 601, the surface of the first bearing 631 facing the outside of the filtering cavity 610 abuts against the second limiting surface 602, and the surface of the second sealing member 642 facing the outside of the filtering cavity 610 abuts against the third limiting surface 603.

[0188] In the above scheme, the inner wall of the sealing support part 611 with the stepped structure forms a plurality of vertical annular limiting surfaces, which respectively abut against the left side surfaces of the first sealing member 641, the first bearing 631 and the second sealing member 642, so as to limit the movement of the above three in the axial direction of the water outlet joint 621 and prevent the loosening of the cooperation structure between the water outlet joint 621 and the sealing support part 611 during the rotation of the filtering mechanism 620.

[0189] In the preferred embodiment of the present embodiment, the outer diameter of the water outlet joint 621 near one end of the outer portion of the filter cavity 610 is smaller than that of the other end, an annular structure is formed on the outer wall of the water outlet joint 621, and a fourth limiting surface 604 perpendicular to the axis of the water outlet joint 621. The surface of the first bearing 631 facing the inside of the filter cavity 610 abuts against the fourth limiting surface 604.

[0190] By setting the outer diameter of the left end of the water outlet joint 621 to be smaller than that of the right end, a fourth limiting surface 604 facing the left side is formed at the position of the sudden change in the outer diameter, and abuts against the right side surface of the first bearing 631. In this way, the first bearing 631 has limiting structures on both sides, and the structure is more stable.

[0191] In the present embodiment, the left end of the sealing support portion 611 is connected to the filter cavity flange 650, and the middle portion of the filter cavity flange 650 has a through hole 653 communicating with the water outlet joint 621. The outer periphery of the through hole 653 extends away from the sealing support portion 611 to form a pipeline connection portion 651.

[0192] Preferably, the surface of the filter cavity flange 650 facing the sealing support portion 611 has a protruding plug-in portion 652 which is inserted into the opening at the left end of the sealing support portion 611.

[0193] In the above-mentioned scheme, the left end of the sealing support portion 611 is connected to the filter cavity flange 650, and the pipeline connection portion 651 is formed on the filter cavity flange 650. The outer diameter of the pipeline connection portion 651 is smaller than that of the sealing support portion 611, and the inner diameter of the pipeline connection portion 651 is preferably equal to that of the water outlet joint 621. When the filter device 600 is installed in a washing machine, the pipeline is connected through the pipeline connection portion 651 on the filter cavity flange 650, which realizes the discharge of the filtered washing water without lint. Compared with the mode in which the pipeline is directly connected to the left end of the sealing support portion 611, the installation is easier.

[0194] The right side of the filter cavity flange 650 has a plug-in portion 652 which is inserted into the opening at the left end of the sealing support portion 611, facilitating the positioning of the filter cavity flange 650 and the sealing support portion 611 during assembly. A plurality of fixing portions are provided on the outer periphery of the filter cavity flange 650 and the sealing support portion 611 respectively, and screws are passed through the fixing portions to fix the filter cavity flange 650 and the sealing support portion 611.

[0195] In a further scheme of the present embodiment, the rotating support portion 622 at the right end of the filter mechanism 620 extends outward along the rotating axis of the rotating support portion 622, and the filter cavity 610 is provided with a mounting hole 6104 through which the rotating support portion 622 passes. The rotating support portion 622 is rotatably and sealingly connected to the mounting hole 6104.

[0196] In the embodiment, the filtering mechanism 620 is driven to rotate by the driving mechanism, which is arranged outside the filtering cavity 610 to avoid contact with the washing water. To this end, the rotating support portion 622 extends from the right end of the filtering cavity 610, and a motor mounting portion 624 is arranged at the right end of the rotating support portion 622 to be connected with the driving mechanism, such as a motor.

[0197] Further, the outer periphery of the mounting opening 6104 extends outward of the filtering cavity 610 along the axis of the rotating support portion 622 to form a sleeve portion 612, and the third sealing member 643 is sleeved on the rotating support portion 622. The inner wall of the third sealing member 643 is sealingly connected with the outer wall of the rotating support portion 622, and the outer wall of the third sealing member 643 is rotatably sealingly connected with the inner wall of the sleeve portion 612.

[0198] The sleeve portion 612 and the rotating support portion 622 are further provided with the second bearing 632, which is sleeved on the rotating support portion 622 and located at the side of the third sealing member 643 facing outward of the filtering cavity 610.

[0199] In the above scheme, the third sealing member 643 prevents the water in the filtering cavity 610 from leaking out of the mounting opening 6104, and the second bearing 632 supports the rotating support portion 622 to ensure smoother relative rotation between the rotating support portion 622 and the sleeve portion 612. The second bearing 632 is arranged at the right side of the third sealing member 643 and does not contact the water in the filtering cavity 610, thereby avoiding failure.

[0200] In the preferred scheme of the embodiment, the inner diameter of the sleeve portion 612 at the end close to the outside of the filtering cavity 610 is smaller than that at the other end, and a fifth limiting surface 605 having an annular structure and being perpendicular to the axis of the rotating support portion 622 is formed on the inner wall of the sleeve portion 612. The surface of the third sealing member 643 facing outward of the filtering cavity 610 abuts against the fifth limiting surface 605.

[0201] The outer diameter of the rotating support portion 622 at the end close to the outside of the filtering cavity 610 is smaller than that at the other end, and a sixth limiting surface 606 having an annular structure and being perpendicular to the axis of the rotating support portion 622 is formed on the outer wall of the rotating support portion 622. The surface of the second bearing 632 facing inward of the filtering cavity 610 abuts against the sixth limiting surface 606.

[0202] In the above scheme, the inner diameter of the right end of the sleeve part 612 is smaller than the inner diameter of the left end, and a fifth limit surface 605 facing the left side is formed at the inner diameter mutation thereof, and abuts against the right side surface of the third seal 643. The outer diameter of the right end of the rotating support part 622 is smaller than the outer diameter of the left end, and a sixth limit surface 606 facing the right side is formed at the outer diameter mutation thereof, and abuts against the left side surface of the second bearing 632. The above structure limits the movement of the third seal 643 and the second bearing 632 in the axial direction of the rotating support part 622, and the structure is stable.

[0203] In the embodiment, the first seal 641, the second seal 642 and the third seal 643 are all oil seals, and the right wall of the filter cavity 610 is separately arranged with the peripheral wall. First, the filter mechanism 620, and the first seal 641, the second seal 642 and the first bearing 631 at the left end thereof are integrally installed inside the filter cavity 610, and then the third seal 643 and the second bearing 632 are installed at the right end thereof, and finally the right wall of the filter cavity 610 is buckled with the peripheral wall.

[0204] In the embodiment, the cross-sectional area of the middle region of the filter screen support part 623 is constant, and the left and right ends have a tapered structure, so that the partial surface of the filter screen 625 is inclined to be arranged, which is beneficial to the shedding of the attached wire scraps.

[0205] In the embodiment, the water inlet 6101 and the sewage outlet 6103 on the filter cavity 610 are perpendicular to the axial direction of the filter mechanism 620.

[0206] Preferably, the filter cavity 610 has a cylindrical structure, the water inlet 6101 is arranged close to the right end of the filter cavity 610, the sewage outlet 6103 is arranged close to the left end of the filter cavity 610, and the water inlet 6101 and the sewage outlet 6103 are symmetrically arranged in the circumferential direction of the filter cavity 610.

[0207] In the above scheme, the position of the water inlet 6101 is as far away from the water outlet joint 621 as possible, so that the area of the filter screen 625 can be fully utilized. The water inlet 6101 and the sewage outlet 6103 are arranged above and below, and staggered in the axial direction of the filter cavity 610, which is beneficial to the full discharge of the sewage in the filter cavity 610 after the cleaning of the filter device 600.

[0208] In a further scheme of the embodiment, the outer wall of the sealing support part 611 is provided with a reinforcing rib 613 extending in the radial direction of the sealing support part 611, and the reinforcing rib 613 is connected to the surface of the filter cavity 610 where the filtered water outlet 6102 is located.

[0209] Since the sealing support part 611 extends a certain length from the left end surface of the filter cavity 610, the reinforcing rib 613 supports the peripheral wall from the outside, thereby ensuring the strength of the sealing support part 611.

[0210] In the embodiment, the filter device 600 is provided with a rotatable filter mechanism 620 in the filter cavity 610. After the washing water to be filtered enters the filter cavity 610, the water from which the lint is filtered enters the filter mechanism 620 and flows out through the water outlet joint 621. The filtered lint adheres to the outer surface of the filter mechanism 620. By driving the filter mechanism 620 to rotate, the lint can be separated and discharged from the drain opening 6103 together with the water in the filter cavity 610, thereby realizing the self-cleaning function of the filter device 600 without the need for manual cleaning by the user.

[0211] The filter mechanism 620 is provided with a first bearing 631 and a second bearing 632 at two ends respectively to support and ensure smooth and stable rotation of the filter mechanism 620 in the filter cavity 610. Meanwhile, the first bearing 631 and the second bearing 632 are prevented from contacting water and failing by the provision of the first sealing member 641, the second sealing member 642 and the third sealing member 643.

[0212] Embodiment Seven

[0213] The difference between the embodiment and the above-mentioned embodiment one is that the water blocking device is a water blocking rib integrally arranged on the bottom of the washing tub, and the water blocking rib surrounds the periphery of the first drain hole outside the bottom of the washing tub.

[0214] The water blocking rib and the washing tub are arranged in an integral structure without a gap therebetween, and the sealing treatment between the water blocking device and the washing tub is omitted.

[0215] Further, the water sealing device is integrally connected with the mounting plate below the washing tub, and there is no gap between the two, and the sealing treatment between the water sealing device and the mounting plate is also omitted.

[0216] In the embodiment, the water blocking rib is directly formed on the bottom of the washing tub as the water blocking device, and the water sealing device and the mounting plate are also an integral structure. Compared with the embodiment one, the sealing gasket between the bottom and the water blocking device and the sealing ring between the water sealing device and the mounting plate are not needed, and the sealing performance is more reliable. Meanwhile, the washing tub and the mounting plate are matched and assembled directly to form the drain chamber, the assembly steps are simplified, and the manufacturing cost is saved.

[0217] The above-mentioned is only the preferred embodiment of the present application, and does not limit the present application in any form. Although the present application has been disclosed as above with the preferred embodiment, it is not intended to limit the present application. Any person skilled in the art can make some changes or modifications to the above-mentioned technical content without departing from the technical solution of the present application, and the equivalent embodiments with equivalent changes are equivalent. Any simple modification, equivalent change and modification of the above-mentioned embodiments based on the technical essence of the present application are still within the scope of the present application.

Claims

1. A laundry machine characterized by, The washing machine comprises: a washing tub, a first drain hole being arranged on the bottom of the washing tub; a driving shaft connected with the washing tub to drive the washing tub to rotate; a water blocking device arranged outside the bottom of the washing tub around the driving shaft; a water sealing device sleeved on the driving shaft and rotatably connected with the water blocking device; a mounting plate arranged below the washing tub, the driving shaft penetrating through the mounting plate to connect with the washing tub, and an eccentric drain hole being arranged on the mounting plate; the water blocking device, the water sealing device and the mounting plate jointly forming a drain chamber which is in communication with the inside of the washing tub, and the drain chamber being in communication with a drain device of the washing machine through the drain hole; a circulating filter pipeline, a water inlet end of which is in communication with the drain chamber, and a water outlet end of which supplies water to the inside of the washing tub, and a circulating pump being arranged on the circulating filter pipeline; a filter device arranged on the circulating filter pipeline; the water blocking device comprises a water blocking rib arranged outside the bottom of the washing tub around the periphery of the first drain hole; the water sealing device is arranged between the mounting plate and the bottom of the washing tub, and comprises: a water sealing part sleeved on the water blocking rib; a connecting part extending outward from the outer wall of the water sealing part and connected with the mounting plate, the extension length of the connecting part on the side of the water sealing part close to the drain hole being greater than the extension length of the connecting part on the side of the water sealing part far from the drain hole, and the projection of the connecting part on the mounting plate covering the drain hole; a sealing ring being arranged around the outer periphery of the connecting part between the connecting part and the mounting plate.

2. A laundry washing machine according to Claim 1, characterized in that the drain device comprises a drain pipeline and a drain valve arranged on the drain pipeline, the water inlet end of the drain pipeline being connected with the drain hole on the mounting plate, and the water inlet end of the circulating filter pipeline being connected between the water inlet end of the drain pipeline and the drain valve.

3. A laundry washing machine according to Claim 1, characterized in that a dynamic sealing member being arranged between the water blocking rib and the water sealing part, the dynamic sealing member being sleeved on the water blocking rib and in dynamic sealing contact with the outer wall of the water blocking rib, and the dynamic sealing member being sealingly connected with the water sealing part.

4. A laundry washing machine according to Claim 3, characterized in that the dynamic sealing member comprises: a sealing lip sleeved on the water blocking rib and in dynamic sealing contact with the outer wall of the water blocking rib; a sealing body being arranged around the outer periphery of the sealing lip and extending inward at the upper end to connect with the sealing lip, the sealing body being sealingly connected with the water sealing part; a skeleton being embedded in the inside of the sealing body.

5. A laundry washing machine according to Claim 4, characterized in that the water sealing part has a side wall spaced apart from the outer wall of the water blocking rib, and a top wall extending from the top end of the side wall to the outer wall of the water blocking rib, the sealing body being arranged below the top wall, and the upper surface of the sealing body being sealingly connected with the lower surface of the top wall.

6. A laundry machine according to claim 1, characterized in that, the water blocking device further comprises a water blocking cover arranged on the upper end of the water blocking rib and fixedly connected with the bottom of the washing tub, and a second drain hole being arranged on the water blocking cover and in communication with the first drain hole.

7. A laundry washing machine according to Claim 6, characterized in that a sealing gasket being arranged between the water blocking cover and the bottom of the washing tub.

8. A laundry washing machine according to Claim 7, characterized in that the sealing gasket has an annular structure around the periphery of the first drain hole.

9. A laundry washing machine according to any one of the preceding claims 1-8, characterized in that, the water outlet end of the circulating filter pipeline is connected with a water outlet device, and the water outlet of the water outlet device is arranged above the opening of the washing tub.

10. A laundry washing machine according to Claim 9, characterized in that the washing machine further comprises a collecting tub, the washing tub being arranged inside the collecting tub, the opening of the collecting tub being higher than the opening of the washing tub, and an annular collecting cover being arranged on the opening of the collecting tub. The water collecting bucket cover has a hollow water flow channel inside, the water outlet end of the circulating filter pipeline is communicated with the water flow channel, and the water outlet of the water flow channel is located above the opening of the washing tub.

11. A laundry washing machine according to any one of the preceding claims 1-8, characterized in that, The filter device comprises: a filter cavity, a water inlet and a filtered water outlet are arranged on the filter cavity, and the water inlet and the filtered water outlet are connected to the circulating filter pipeline; a filter mechanism rotatably arranged in the filter cavity; a driving mechanism for driving the filter mechanism to rotate in the filter cavity.

12. A laundry washing machine according to Claim 11, characterized in that The direction of the filtered water outlet is parallel to the axis direction of the filter mechanism.

13. The laundry machine according to claim 11, characterized in that, The filter cavity is mounted on the base of the washing machine. Alternatively, the washing machine further comprises a water collecting bucket, the washing tub is arranged inside the water collecting bucket, and the filter cavity is mounted on the outer surface of the bottom of the water collecting bucket or the outer surface of the wall of the water collecting bucket. Alternatively, the washing machine further comprises a cabinet, the washing tub is arranged inside the cabinet, and the filter cavity is mounted on the inner wall of the cabinet.

14. The laundry machine according to claim 11, characterized in that, A sewage outlet is further arranged on the filter cavity for discharging the filtered impurities, the sewage outlet is connected to a sewage pipeline, a sewage control valve is arranged on the sewage pipeline for controlling the opening and closing of the sewage pipeline. The sewage pipeline is communicated with the drainage device of the washing machine, or the washing machine further comprises a recycling device for collecting the filtered impurities, and the sewage pipeline is communicated with the recycling device.

15. A laundry washing machine according to Claim 14, characterized in that When the sewage control valve is opened, the sewage pipeline is unidirectionally communicated from the sewage outlet to the drainage device / recycling device.

16. A control method of the washing machine according to any one of claims 1 to 15, characterized in that, The method comprises: starting the circulating pump to guide the water in the washing tub into the circulating filter pipeline through the drainage chamber, and then the water is returned to the washing tub after removing the filtered impurities by the filter device.

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