CN115787258A

CN115787258A - Washing machine and control method thereof

Info

Publication number: CN115787258A
Application number: CN202111060851.1A
Authority: CN
Inventors: 吕艳芬; 许升; 刘凯
Original assignee: Qingdao Haier Washing Machine Co Ltd; Haier Smart Home Co Ltd
Current assignee: Qingdao Haier Washing Machine Co Ltd; Haier Smart Home Co Ltd
Priority date: 2021-09-10
Filing date: 2021-09-10
Publication date: 2023-03-14

Abstract

The invention belongs to the technical field of washing machines, and discloses a washing machine and a control method thereof, wherein the washing machine comprises: the washing machine comprises a washing barrel, wherein a first water drainage hole is formed in the bottom of the washing barrel; the driving shaft is connected with the washing barrel and drives the washing barrel to rotate; the water retaining device is arranged at the outer side of the bottom of the washing barrel around the driving shaft; the water sealing device is sleeved on the driving shaft and is rotatably and hermetically connected with the water retaining device, the water sealing device and the water retaining device form a drainage cavity communicated with the interior of the washing tub, and the drainage cavity is communicated with a drainage device of the washing machine; a water inlet end of the circulating filter pipeline is communicated with the drainage cavity, a water outlet end of the circulating filter pipeline supplies water to the interior of the washing barrel, and a circulating pump is arranged on the circulating filter pipeline; and the filtering device is arranged on the circulating filtering pipeline. In the invention, the water retaining device and the water sealing device are matched to realize the communication between the circulating filtering pipeline and the interior of the washing barrel, so that the washing machine with the washing barrel independently containing water realizes the circulating filtering function.

Description

Washing machine and control method thereof

Technical Field

The invention belongs to the technical field of washing machines, and particularly relates to a washing machine and a control method thereof.

Background

In the process of washing the clothes by the washing machine, the clothes generate threads and scraps to fall off and be mixed into the washing water due to friction between the clothes and friction between the clothes and the washing machine. If the lint in the washing water cannot be removed, the lint is likely to adhere to the surface of the laundry after the washing is completed, which may affect the washing effect of the laundry. For this reason, the conventional washing machine is provided with a lint filter for filtering lint, and the washing water is circulated through the lint filter during washing to remove lint from the washing water. However, the conventional lint filter is generally disposed inside the washing tub, which causes the space inside the washing tub to be occupied, thereby affecting the actual available washing volume.

In the case of the washing machine in which the lint filter is disposed outside the washing tub, since the washing tub rotates during the operation of the washing machine, the lint filter is generally directly communicated with the water receiving tub outside the washing tub, and the circulation filtration of the washing water is achieved by the mutual communication between the washing tub and the water receiving tub. However, since the washing water may exist between the washing tub and the water tub, as the operating time of the washing machine increases, dirt and lint carried in the washing water may be retained in a space between the washing tub and the water tub and is difficult to clean, causing bacteria and bad smell generated during the use throughout the year, affecting the sanitation of the laundry, and harming the health of the user.

In order to solve the above problem, the prior art proposes a washing machine without a dewatering hole on the washing tub, so that the washing tub can independently contain washing water during the washing process, but at the same time, since there is no water between the washing tub and the water containing tub, even some washing machines do not have water containing tubs, the circulation filtering method of connecting the lint filter to the water containing tub is no longer applicable.

In view of the above, the present invention is particularly proposed.

Disclosure of Invention

The invention aims to overcome the defects of the prior art and provides a washing machine and a control method thereof.A water retaining device and a water sealing device are matched to form a drainage chamber communicated with the interior of a washing barrel, and a circulating filter pipeline provided with a filter device can be communicated with the interior of the washing barrel through the drainage chamber, so that the washing machine with the washing barrel independently holding water realizes a circulating filter function.

In order to solve the technical problems, the invention adopts the technical scheme that:

a washing machine comprising:

the washing machine comprises a washing barrel, wherein a first water drainage hole is formed in the bottom of the washing barrel;

the driving shaft is connected with the washing barrel and drives the washing barrel to rotate;

the water retaining device is arranged at the outer side of the bottom of the washing barrel around the driving shaft;

the water sealing device is sleeved on the driving shaft and is rotatably and hermetically connected with the water retaining device, the water sealing device and the water retaining device form a drainage cavity communicated with the interior of the washing barrel, and the drainage cavity is communicated with a drainage device of the washing machine;

a water inlet end of the circulating filtering pipeline is communicated with the drainage cavity, a water outlet end of the circulating filtering pipeline supplies water to the interior of the washing barrel, and a circulating pump is arranged on the circulating filtering pipeline;

and the filtering device is arranged on the circulating filtering pipeline.

Further, the washing machine also comprises an installation plate which is arranged below the washing barrel; the water sealing device is arranged on the mounting plate and is positioned between the mounting plate and the bottom of the washing barrel; the mounting plate is provided with a water outlet, and the water drainage cavity is communicated with a water drainage device through the water outlet.

Furthermore, the drainage device comprises a drainage pipeline and a drainage valve arranged on the drainage pipeline, and the water inlet end of the drainage pipeline is connected with a drainage port on the mounting plate; and the water inlet end of the circulating filter pipeline is connected between the water inlet end of the drainage pipeline and the drainage valve.

Furthermore, the water retaining device comprises a water retaining rib which surrounds the periphery of the first drainage hole for one circle at the outer side of the bottom of the washing barrel;

the driving shaft penetrates through the mounting plate to be connected with the washing barrel, and the water outlet is eccentrically arranged on the mounting plate; the water sealing device comprises:

the water sealing part is sleeved on the water retaining rib;

a connecting part extending from the outer wall of the water sealing part to the periphery and connected with the mounting plate, wherein the projection of the connecting part on the mounting plate covers the water outlet;

the extension length of the connecting part at one side of the water sealing part close to the water outlet is longer than that of the connecting part at one side of the water sealing part far away from the water outlet;

preferably, a sealing ring is arranged between the connecting part and the mounting plate along the periphery of the connecting part in a surrounding manner.

Furthermore, a movable sealing element is arranged between the water blocking rib and the water sealing part, the movable sealing element is sleeved on the water blocking rib and is in movable sealing contact with the outer wall of the water blocking rib, and the movable sealing element is in sealing connection with the water sealing part;

preferably, the dynamic seal comprises:

the sealing lip is sleeved on the water retaining rib and is in dynamic sealing contact with the outer wall of the water retaining rib;

the sealing body is arranged around the periphery of the sealing lip, the upper end of the sealing body extends inwards to be connected with the sealing lip, and the sealing body is connected with the water sealing part in a sealing manner;

the framework is embedded in the sealing body;

preferably, the water sealing part is provided with a side wall arranged at an interval with the outer wall of the water retaining rib and a top wall extending from the top end of the side wall to the outer wall of the water retaining rib; the seal body is arranged below the top wall, and the upper surface of the seal body is connected with the lower surface of the top wall in a sealing mode.

The water retaining device further comprises a water retaining cover, the water retaining cover is arranged at the upper end of the water retaining rib and is fixedly connected with the bottom of the washing barrel, and a second water drainage hole communicated with the first water drainage hole is formed in the water retaining cover;

preferably, a sealing gasket is arranged between the water blocking cover and the bottom of the washing barrel;

more preferably, the gasket has an annular configuration around the periphery of the first drain hole.

Furthermore, the water outlet end of the circulating filtering pipeline is connected with a water outlet device, and the water outlet of the water outlet device is positioned above the opening of the washing barrel;

preferably, the washing machine further comprises a water collection tub, the washing tub being disposed inside the water collection tub; the opening of the water collecting barrel is higher than the opening of the washing barrel, and a water collecting barrel cover with an annular structure is arranged at the opening of the water collecting barrel;

the water collecting barrel cover is internally provided with a hollow water flow channel, the water outlet end of the circulating filtering pipeline is communicated with the water flow channel, and the water outlet of the water flow channel is positioned above the barrel mouth of the washing barrel.

Further, the filtering apparatus includes:

the filter cavity is provided with a water inlet and a filtered water outlet, and the water inlet and the filtered water outlet are connected to the circulating filter pipeline;

the filtering mechanism is rotatably arranged in the filtering cavity;

the driving mechanism drives the filtering mechanism to rotate in the filtering cavity;

preferably, the filtered water outlet is oriented parallel to the axial direction of the filter means;

preferably, the filtering chamber is mounted on a base of the washing machine;

or, the washing machine further comprises a water collection barrel, and the washing barrel is arranged inside the water collection barrel; the filtering cavity is arranged on the outer surface of the bottom of the water collecting barrel or the outer surface of the wall of the water collecting barrel;

or, the washing machine further comprises a cabinet, and the washing tub is disposed inside the cabinet; the filtering cavity is arranged on the inner wall of the box body.

Furthermore, a sewage draining outlet is also arranged on the filtering cavity body and used for discharging filtering impurities outwards; the sewage draining port is connected with a sewage draining pipeline, and a sewage draining control valve is arranged on the sewage draining pipeline and used for controlling the on-off of the sewage draining pipeline;

the sewage discharge pipeline is communicated with a drainage device of the washing machine; or the washing machine further comprises a recovery device for collecting and filtering impurities, and the sewage discharge pipeline is communicated with the recovery device;

preferably, the blowdown control valve is opened, and the blowdown pipe is communicated in one way from the blowdown port to the drainage device/recovery device.

Another object of the present invention is to provide a control method of the above washing machine, including: and starting the circulating pump, leading the water in the washing barrel into the circulating filtering pipeline through the drainage chamber, removing filtering impurities through the filtering device, and returning the water to the washing barrel again.

After the technical scheme is adopted, compared with the prior art, the invention has the following beneficial effects.

According to the invention, the washing barrel can independently contain water, the water retaining device is arranged on the barrel bottom of the washing barrel and is in dynamic sealing fit with the water sealing device to form the drainage chamber, the circulating filtering pipeline provided with the filtering device is communicated with the inside of the washing barrel through the drainage chamber, and further the washing water circulating filtering function of the washing machine is realized.

In the invention, the movable sealing element is arranged between the water retaining device and the water sealing device, the water retaining device can synchronously rotate along with the washing barrel, and the sealing performance between the water retaining device and the water sealing device is good, thereby preventing the water leakage of the washing barrel. The sealing ring between the water sealing device and the mounting plate and the sealing gasket between the water retaining device and the bottom of the washing barrel further enhance the sealing performance, and ensure that no water leakage occurs among the washing barrel, the drainage chamber and the drainage device.

In the invention, the water outlet end of the circulating filter pipeline is connected with the water outlet device, and the filtered water returns to the inside of the washing barrel from the upper part of the barrel opening of the washing barrel, so that the spraying function is realized while the washing water is circularly filtered, and the washing effect of clothes is improved.

According to the invention, the filtering mechanism in the filtering device can rotate in the filtering cavity under the driving of the driving mechanism, the filtering impurities are attached to the outer surface of the filtering mechanism and can be peeled off from the filtering mechanism under the centrifugal force generated by rotation and the impact force of the stirred water flow in the filtering cavity, so that the self-cleaning function of the filtering device is realized, and the cleaning efficiency of the filtering impurities is high.

The following describes embodiments of the present invention in further detail with reference to the accompanying drawings.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention, are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention without limiting the invention to the right. It is obvious that the drawings in the following description are only some embodiments, and that for a person skilled in the art, other drawings can be derived from them without inventive effort. In the drawings:

FIG. 1 is a schematic view showing a structure of a washing machine according to an embodiment of the present invention;

FIG. 2 is a partially enlarged schematic view of the bottom of the washing tub in the embodiment of the present invention;

FIG. 3 is a schematic structural view of a dynamic seal in an embodiment of the present invention;

FIG. 4 is an enlarged view of a filter and surrounding structure according to an embodiment of the present invention;

FIG. 5 is an exploded view of a part of the structure of the washing machine in the embodiment of the present invention;

FIG. 6 is a schematic structural view of the water sealing device and the water blocking device in the embodiment of the present invention;

FIG. 7 is a schematic view of the structure of a filter device according to an embodiment of the present invention;

fig. 8 isbase:Sub>A schematic view of the cross-sectionbase:Sub>A-base:Sub>A of fig. 7 of the present invention.

In the figure: 100. a washing tub; 110. a drive shaft; 210. a drain line; 211. a drain valve; 220. a circulation line; 221. a circulation pump; 230. a water return pipeline; 231. a water outlet device; 240. a sewage draining pipeline; 241. a blowdown control valve; 300. a water collection barrel; 310. mounting a plate; 311. a water outlet; 320. a water collection barrel cover; 410. a water retaining device; 411. a water blocking cover; 412. water retaining ribs; 413. a second drain hole; 414. a gasket; 420. a water sealing device; 421. a water sealing part; 422. a connecting portion; 423. a seal ring; 430. a dynamic seal; 431. a sealing lip; 432. a seal body; 433. a framework; 500. a box body;

600. a filtration device; 601. a first limiting surface; 602. a second limiting surface; 603. a third limiting surface; 604. a fourth limiting surface; 605. a fifth limiting surface; 606. a sixth limiting surface; 610. a filtering cavity; 6101. a water inlet; 6102. a filtered water outlet; 6103. a sewage draining outlet; 6104. an installation port; 611. a seal support portion; 612. a sleeve portion; 613. reinforcing ribs; 620. a filtering mechanism; 621. a water outlet joint; 622. a rotation support; 623. a filter screen support part; 624. a motor mounting portion; 625. a filter screen; 631. a first bearing; 632. a second bearing; 641. a first seal member; 642. a second seal member; 643. a third seal member; 650. a filter cavity flange; 651. a pipe connection; 652. a plug-in part; 653. a through opening; 660. a drive mechanism.

It should be noted that the drawings and the description are not intended to limit the scope of the inventive concept in any way, but to illustrate it by a person skilled in the art with reference to specific embodiments.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and the following embodiments are used for illustrating the present invention and are not intended to limit the scope of the present invention.

In the description of the present invention, it should be noted that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; may be directly connected or indirectly connected through an intermediate. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Example one

As shown in fig. 1 to 4, the washing machine according to the present embodiment includes:

a washing tub 100, a first drain hole being provided at a tub bottom of the washing tub 100;

a driving shaft 110 connected to the washing tub 100 to drive the washing tub 100 to rotate;

a water blocking device 410 disposed at an outer side of the bottom of the washing tub 100 around the driving shaft 110;

a water sealing device 420 sleeved on the driving shaft 110 and rotatably and hermetically connected with the water blocking device 410, wherein the water sealing device 420 and the water blocking device 410 form a drainage chamber communicated with the interior of the washing tub 100, and the drainage chamber is communicated with a drainage device of the washing machine;

a water inlet end of the circulating filter pipeline is communicated with the drainage chamber, a water outlet end of the circulating filter pipeline supplies water to the interior of the washing barrel 100, and a circulating pump 221 is arranged on the circulating filter pipeline;

and a filtering device 600 disposed on the circulation filtering line.

In this embodiment, the wall of the washing tub 100 is at least not provided with dewatering holes at a height lower than the highest water level, so that the washing tub 100 can independently hold water during the washing and rinsing processes, thereby avoiding the situation that water is stored between the inner and outer tubs in the washing process of the traditional washing machine, saving the consumption of washing water, and being beneficial to the cleanness and sanitation of the washing machine. Through the arrangement of the water blocking device 410 and the water sealing device 420, the two form a drainage chamber to directly communicate the interior of the washing tub 100 with the drainage device. The water blocking device 410 can rotate with the washing tub 100, and the water sealing device 420 is fixedly disposed inside the washing machine, and a dynamic sealing structure is provided between the two to prevent the washing water from leaking out from the connection between the two.

The drainage device has two working states of opening and closing. In the washing and rinsing processes, the drainage device is closed to block the washing water in the washing tub 100 and the drainage chamber, and when the drainage is performed, the drainage device is opened, so that the water in the washing tub 100 can be drained out of the washing machine from the drainage device through the drainage chamber.

The washing machine is also provided with a circulating filter pipeline, and the circulating filter pipeline is provided with a filter device 600 which can filter the washing water flowing through and remove the filtering impurities such as thread scraps carried in the washing water. The water inlet end of the circulating filter pipeline is communicated with the drainage cavity, so that the purpose that the washing water is guided out of the washing barrel 100 and is conveyed back to the washing barrel 100 after being filtered by the filtering device 600 is achieved, and the problem that the washing barrel 100 cannot be directly connected with the circulating filter pipeline due to the fact that the washing barrel 100 needs to rotate is solved. Through the arrangement mode, the washing machine with the washing barrel 100 capable of independently containing water can also realize the circulating and filtering function of the washing water, so that the thread scrap content in the washing water is reduced, and the washing effect is improved.

In a further aspect of this embodiment, the washing machine further includes a mounting plate 310 disposed below the washing tub 100. The water sealing device 420 is disposed on the mounting plate 310 and between the mounting plate 310 and the bottom of the washing tub 100. The mounting plate 310 is provided with a water discharge port 311, and the water discharge chamber is communicated with a water discharge device through the water discharge port 311.

Further, the drainage device includes a drainage pipeline 210 and a drainage valve 211 disposed on the drainage pipeline 210, and a water inlet end of the drainage pipeline 210 is connected to a drainage port 311 of the mounting plate 310. The water inlet end of the circulating filter line is connected between the water inlet end of the water discharge line 210 and the water discharge valve 211.

During washing and rinsing, the drain valve 211 is closed to block the washing water in the washing tub 100, the drain chamber, and the drain line 210 located upstream of the drain valve 211. The water inlet end of the circulating filter line is connected between the water inlet end of the drain line 210 and the drain valve 211, and thus may be fixedly disposed inside the washing machine. When the circulation pump 221 is turned on, the washing water is pumped out of the washing tub 100, filtered by the filter device 600, and then returned to the washing tub 100. When draining, the drain valve 211 is opened, the water inlet end and the water outlet end of the drain pipeline 210 are communicated, and the water in the washing tub 100 can be drained out of the washing machine through the drain pipeline 210.

Specifically, the circulation filtration line of the present embodiment includes:

a circulation line 220 having a water inlet end connected to the drain line 210, a water outlet end connected to a water inlet 6101 of the filter device 600, and a circulation pump 221 provided on the circulation line 220;

a water return pipe 230 having a water inlet end connected to the filtered water outlet 6102 of the filtering device 600 and a water outlet end communicated with the barrel opening of the washing barrel 100, and returning water to the inside of the washing barrel 100 through the barrel opening of the washing barrel 100.

In another scheme of this embodiment, the end of intaking of circulating filtration pipeline, the end of intaking that also is circulating pipeline also can be connected on sealing water installation to direct and drainage cavity intercommunication. Because the water sealing device is fixed in the washing machine, the circulating filtering pipeline can also be fixedly arranged in the washing machine.

In a further aspect of this embodiment, the water outlet end of the circulating filter pipeline, that is, the water 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.

The water return pipe 230 delivers the filtered water to the water outlet 231, and then flows out of the water outlet 231, and enters the washing tub 100 from the opening of the washing tub 100. The filtered water also realizes a spraying function when entering the washing tub 100, and further improves a washing effect by spraying the laundry.

In this embodiment, the water blocking device 410 includes a water blocking rib 412 surrounding the periphery of the first drain hole at the outer side of the bottom of the washing tub 100. The driving shaft 110 is coupled to the washing tub 100 through the mounting plate 310, and the drain hole 311 is eccentrically disposed on the mounting plate 310.

The water sealing device 420 includes:

the water sealing part 421 is sleeved on the water retaining rib 412;

and a connection portion 422 extending from the outer wall of the water sealing portion 421 to the outer periphery and connected to the mounting plate 310, wherein the projection of the connection portion 422 on the mounting plate 310 covers the water discharge port 311.

The extension length of the connection part 422 on the side of the water sealing part 421 close to the water discharge port 311 is longer than the extension length of the connection part 421 on the side far from the water discharge port 311, so that the projection of the connection part covers the water discharge port 311.

In detail, the connection portion 422 has a stepped structure. On the side away from the drain opening 311, the connection portion 422 extends horizontally a certain distance from the outer periphery of the water seal portion 421, then extends downward, then extends horizontally again, and finally extends downward to the upper surface of the mounting plate 310. On the side close to the drain opening 311, the connection portion 422 extends obliquely downward from the outer periphery of the water sealing portion 421 by a certain distance, then extends downward to form a step, then extends horizontally until its projection covers the drain opening 311, and finally extends downward to the upper surface of the mounting plate 310.

In a preferred embodiment of the present invention, a sealing ring 423 is disposed between the connection portion 422 and the mounting plate 310 and around the outer circumference of the connection portion 422. Specifically, the sealing ring 423 is disposed between a bottom surface of a sidewall of the connection portion 422 extending vertically downward and an upper surface of the mounting plate 310, and the shape of the sealing ring 423 matches a shape of a projected outer circumference of the connection portion 422 on the mounting plate 310.

In the above scheme, the water blocking device 410, the water sealing device 420 and the mounting plate 310 jointly enclose a drainage chamber, the water sealing device 420 and the mounting plate 310 are two mutually independent pieces, the sealing ring 423 is arranged to seal the two pieces, the sealing performance of the drainage chamber is enhanced, and water leakage caused by a gap between the water sealing device 420 and the mounting plate 310 is prevented.

In a further scheme of this embodiment, a movable sealing element 430 is disposed between the water blocking rib 412 and the water sealing portion 421, the movable sealing element 430 is sleeved on the water blocking rib 412 and is in movable sealing contact with an outer wall of the water blocking rib 412, and the movable sealing element 430 is in sealing connection with the water sealing portion 421.

Preferably, the dynamic seal 430 includes:

the sealing lip 431 is sleeved on the water retaining rib 412 and is in dynamic sealing contact with the outer wall of the water retaining rib 412;

a seal body 432 provided around the outer periphery of the seal lip 431, the upper end of the seal body 432 extending inward and being connected to the seal lip 431, the seal body 432 being sealingly connected to the water sealing portion 421;

and a skeleton 433 embedded in the sealing body 432.

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 a top end of the side wall toward the outer wall of the water blocking rib 412. The sealing body 432 is disposed below the top wall, and an upper surface of the sealing body 432 is sealingly connected to a lower surface of the top wall.

In this embodiment, the dynamic seal 430 has a structure in which a metal frame 433 is embedded in the elastic seal body 432, and the frame 433 has a structure similar to that of the seal body 432, that is, a portion disposed around the outer periphery of the seal lip 431 and a portion formed by extending the upper end inward can support the seal body 432, and the entire bending structure of the seal body 432 is not significantly changed. Therefore, the situation of water leakage caused by the fact that the dynamic sealing contact fit between the sealing lip 431 and the outer wall of the water retaining rib 412 is influenced by the deformation of the sealing body 432 is avoided.

The water retaining device 410 of the present embodiment further includes a water retaining cover 411, the water retaining cover 411 is disposed at the upper end of the water retaining rib 412 and is fixedly connected to the bottom of the washing tub 100, and a second drainage hole 413 communicated with the first drainage hole on the bottom of the washing tub 100 is disposed on the water retaining cover 411.

Specifically, the second water drainage hole 413 on the water blocking cover 411 and the first water drainage hole on the bottom of the washing tub 100 are arranged in a one-to-one correspondence manner, and the inside of the washing tub 100 is communicated with the water drainage chamber through the first water drainage hole and the second water drainage hole 413.

In a preferred embodiment of the present embodiment, a gasket 414 is disposed between the water blocking cover 411 and the bottom of the washing tub 100.

More preferably, the gasket 414 has an annular configuration around the periphery of the first drain hole.

In the above scheme, the water blocking device 410 and the washing tub 100 are separately arranged, and are assembled into a whole in the later period, and the washing tub 100 is connected with the water blocking device 410 through the water blocking cover 411, so that the assembly operation is easier. The provision of the gasket 414 prevents water leakage between the washing tub 100 and the water guard 410, and further improves the sealing performance of the washing tub 100 and the drain chamber as a whole.

In a further aspect of this embodiment, the filtering apparatus 600 includes:

a filtering cavity 610, on which a water inlet 6101 and a filtered water outlet 6102 are arranged, the water inlet 6101 and the filtered water outlet 6102 are connected to the circulating filtering pipeline;

a filter mechanism 620 rotatably disposed in the filter chamber 610;

and the driving mechanism 660 drives the filtering mechanism 620 to rotate in the filtering cavity 610.

Specifically, as shown in fig. 7 and 8, the filter mechanism 620 includes a filter screen support and a filter screen 625, and the filter screen support specifically includes:

a filter screen support 623 located inside the filter cavity 610, wherein the filter screen 625 covers the surface of the filter screen support 623, so as to divide the inside of the filter cavity 610 into an outer cavity and an inner cavity;

and a water outlet connector 621 communicated with the inner chamber.

When the circulation pump 221 is turned on, the washing water to be filtered is delivered to the filter device 600, enters the outer cavity inside the filter cavity 610 from the water inlet 6101, and passes through the filter mechanism 620, the filtering impurities in the washing water are blocked by the filter screen 625 and attached to the surface of the filter screen 625, so that the washing water entering the inner cavity no longer contains the filtering impurities such as thread scraps. The filtered clean washing water flows out of the filtering chamber 610 through the outlet connector 621 and the filtered water outlet 6102.

Further, a drain outlet 6103 is further provided on the filtering chamber 610 for discharging the filtered impurities.

When the filtering apparatus 600 needs to be cleaned, the driving mechanism 660, such as a motor, drives the filtering mechanism 620 to rotate in the filtering cavity 610, so as to stir the water remaining in the filtering cavity 610, so that the filtering impurities on the surface of the filtering net 625 are peeled off from the filtering net 625 under the action of centrifugal force and the stirring water flow, and are melted into the water in the filtering cavity 610, and then are discharged out of the filtering cavity 610 through the sewage outlet 6103.

Preferably, the filtered water outlet 6102 is oriented parallel to the axial direction of the filter mechanism 620. Specifically, the water outlet connector 621 is disposed at one end of the filter screen support portion 623, and the axis thereof coincides with the axis of the filter mechanism 620, and the water outlet connector 621 is rotatably and hermetically connected to the filtered water outlet 6102.

In this embodiment, the axis of the filtering device 600 is vertically disposed, the filtered water outlet 6102 is vertically disposed upward, and the direction of the water inlet 6101 and the direction of the sewage outlet 6103 are both horizontal. The washing water to be filtered enters from the side of the filtering cavity 610 and can flow out from the filtered water outlet 6102 at the top under the driving action of the circulating pump 221, which is beneficial to improving the filtering water pressure and enhancing the filtering effect. Since the filtered impurities tend to collect at the bottom of the filtering chamber 610 after being stripped from the filtering net 625, the drainage outlet 6103 is preferably disposed near the bottom of the filtering chamber 610, which is beneficial to the sufficient drainage of the sewage and the filtered impurities.

The washing machine of this embodiment further includes a cabinet 500, and the washing tub 100, the mounting plate 310, the drainage device, the circulation filter line, the filter device 600, and the like are disposed in the cabinet 500. The filter device 600 is particularly installed between the tub wall of the washing tub 100 and the inner wall of the cabinet 500.

In this embodiment, the sewage outlet 6103 is connected to the sewage pipeline 240, and the sewage pipeline 240 is provided with a sewage control valve 241 for controlling the on-off of the sewage pipeline 240. The drain line 240 communicates with a drain of the washing machine.

In the above solution, the blowdown control valve 241 is closed during the circulation filtering process, and the blowdown pipeline 240 is cut off, so as to ensure that all the washing water entering the filtering apparatus 600 flows out from the filtered water outlet 6102, and ensure the filtering efficiency of the washing water. Only when the sewage and the filtered impurities need to be discharged to the outside, the sewage control valve 241 is opened to conduct the sewage line 240. The drain line 240 is communicated with a drain device, and the sewage carrying the filtered impurities can be discharged out of the washing machine through the drain device.

Specifically, the water outlet end of the blowdown line 240 is connected to the drain line 210 and is located between the drain valve 211 and the water outlet end of the drain line 210.

In the preferred embodiment, the blowdown control valve 241 is opened, and the blowdown pipe 240 is communicated to the drain device, i.e., the drain pipe 210, from the blowdown port 6103 in a single direction. The drain control valve 241 is set to a one-way valve to prevent the reverse flow of the sewage in the drain line 240.

Further, a return water control valve (not shown) is disposed on the return pipe 230 of the present embodiment, and is used for controlling the on/off of the return pipe 230. When the washing water is circularly filtered, the water return control valve is opened to conduct the water return pipe 230. When the filtering apparatus 600 discharges the sewage outwards, the return control valve is closed to cut off the return pipe 230, the drain control valve 241 is opened, and the sewage in the filtering cavity 610 can be discharged into the drain pipe 240 through the drain outlet 6103, and then into the drain pipe 210 to be discharged out of the washing machine.

The backwater control valve is matched with the drain control valve 241, so that the water entering the filtering apparatus 600 can be ensured to flow out from the corresponding water outlet, thereby controlling whether the filtering apparatus 600 performs a circulating filtering operation on the washing water or discharges the sewage inside the filtering apparatus 600 at present.

The embodiment also provides a control method of the washing machine, which respectively executes a circulation filtering operation, a self-cleaning operation and a pollution discharge operation in the process of running the washing program of the washing machine.

Specifically, the circulating filtration operation includes: the drain control valve 241 is closed, the circulation pump 221 is turned on, and the water in the washing tub 100 is introduced into the circulation filtering line through the drain chamber, and is returned to the washing tub 100 after the impurities are removed by the filtering device 600.

The self-cleaning operation comprises: the drain control valve 241 opens the drain line 240, turns on the circulation pump 221, guides the water in the washing tub 100 into the filtering apparatus 600 through the drain chamber, and drains the water into the drain line 210 through the drain line 240 after cleaning the filtering apparatus 600. Further comprising: the control driving mechanism 660 drives the filtering mechanism 620 to rotate in the filtering cavity 610.

The blowdown operation comprises: the drain control valve 241 opens and communicates the drain line 240 to drain the contaminated water with the filtered impurities in the filtering apparatus 600 into the drain line 210. When the pollution discharge operation is performed, the driving mechanism 660 can be controlled to be opened to drive the filtering mechanism 620 to rotate, or the driving mechanism 660 is not opened, so that the filtering mechanism 620 keeps still in the filtering cavity 610.

In this embodiment, the circulation filtering operation is performed in both the washing stage and one to more rinsing stages of the washing program, and the self-cleaning operation and/or the soil discharging operation is performed at least once in one complete washing program. Preferably, the self-cleaning operation and the soil discharging operation are performed at the end of the washing stage and each rinsing stage.

Specifically, the circulation pump 221 is turned on after the washing stage and each rinsing stage start to feed water for a certain period of time, and the circulation filtering operation is started. The circulation filtering operation is continuously performed until the washing or rinsing stage is nearly completed, i.e., when the water is to be drained, the soil exhaust control valve 241 is opened and the driving mechanism 660 is actuated to perform the self-cleaning operation. After the self-cleaning operation lasts for a certain time, the washing machine executes the pollution discharge operation again.

In detail, after the washing machine starts to feed water, the water level in the washing tub 100 is detected, and when the water level reaches a preset water level, the circulation pump 221 is turned on to start a circulation filtering operation. This prevents the circulation pump 221 from generating operation noise by sucking air into the washing tub 100 due to an excessively small amount of water.

In this embodiment, the washing tub 100 can independently contain water, and the water blocking device 410, the water sealing device 420 and the mounting plate 310 are disposed under the washing tub 100 to form a drainage chamber communicated with the inside of the washing tub 100. The circulation filtering pipe provided with the filtering device 600 is communicated with the drain chamber, so that it can be fixedly provided inside the washing machine and achieve the purpose of guiding out the washing water from the washing tub 100 for filtering. The filtered water enters the washing tub 100 from the mouth of the washing tub 100, and has a spraying effect. Through the design of the sealing structure among 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 realizes the function of circularly filtering the washing water and the spraying function, and the washing effect is improved.

Example two

The present embodiment is different from the first embodiment in that: the washing machine further comprises a recovery device for collecting and filtering impurities, and the sewage discharge pipeline is communicated with the recovery device.

Through setting up recovery unit and being used for collecting filter equipment exhaust filtration impurity, rather than will filtering impurity along with the direct discharge washing machine of sewage, avoided filtering the tiny thread scraps in the impurity and discharged along with the rivers, get into ecological cycle, and then bring harm to ecological environment and health.

In this embodiment, blowdown control valve sets up to the check valve, and blowdown control valve opens, the sewage pipes is by drain to recovery unit one-way conduction, has prevented the sewage refluence in the sewage pipes.

In a specific aspect of this embodiment, the recycling apparatus includes:

a housing having a recovery chamber therein;

the filter assembly is arranged in the recovery cavity and divides the recovery cavity into a first cavity and a second cavity;

the sewage discharge pipeline is communicated with the first cavity, sewage carrying filtering impurities enters the first cavity, the sewage enters the second cavity after being filtered by the filtering assembly, and the filtering impurities are collected in the first cavity.

In the scheme, the recovery device is internally provided with the filtering component for filtering sewage discharged by the filtering device and separating filtering impurities from the water. The interior of the recovery device is divided into a first cavity and a second cavity through the filtering component, filtering impurities in the sewage are blocked by the filtering component, so that the filtering impurities are collected on the surface of the filtering component in the first cavity, and clear water obtained after filtering is collected in the second cavity. The user can directly collect the processing to the filtration impurity of separating, has avoided filtering impurity mixture in aqueous, can't carry out the condition of efficient handling to it.

In this embodiment, the recycling device is disposed on the box of the washing machine in an insertable/removable manner, and the user can remove the recycling device from the box for cleaning.

Specifically, a housing of the recovery device is provided on the case to be insertable/withdrawable, and an upper side of the housing has an opening. When the user took the casing out from the box, the uncovered of accessible casing upside cleared up the filtration impurity of adhering to at the filter assembly upper surface. The filter assembly is preferably detachably connected with the shell, and a user can detach the filter assembly from the interior of the shell and take out the filter assembly for cleaning, so that the operation is more convenient.

In the preferred scheme of this embodiment, set up the delivery port on the second cavity in the casing, can in time discharge recovery unit with the clear water that gets into the second cavity, when the sewage volume of avoiding filter equipment to discharge is great, recovery unit appears the overflow phenomenon. The problem that the recovery device occupies a large space in the washing machine due to the fact that the volume of the recovery device is increased for preventing the recovery device from overflowing is also solved.

On the other hand, water in the second chamber can be discharged automatically from the water outlet, and when a user cleans the recovery device, only filtered impurities on the filtering component need to be cleaned, and clear water in the second chamber does not need to be poured out manually. When filter assembly detachably installs in the casing, the user need not take off the casing from washing machine's box completely even, only need take out filter assembly clear up can, more convenient operation.

Furthermore, a water outlet on the second chamber can be communicated with a drainage device of the washing machine through a pipeline, so that the filtered clean water is directly discharged out of the washing machine. Because the filtering impurities in the sewage are filtered by the filtering component, the situation that fine thread scraps are discharged into ecological circulation along with water flow is avoided.

In this embodiment, a pipeline may also be provided to reintroduce the clean water in the second chamber into the washing tub, so as to recycle the filtered clean water, thereby reducing the water inflow required by the continuous operation of the washing machine and achieving the purpose of saving the water consumption of the washing machine. The delivery port on the second chamber is connected with a delivery pipeline, clear water is delivered to the mouth of the washing barrel, and then enters the washing barrel in a spray water mode to spray clothes in the washing barrel, so that the washing effect can be improved.

In the embodiment, the recovery device is arranged on the washing machine, and sewage discharged by the filtering device enters the recovery device but is not directly discharged out of the washing machine, so that the condition that fine thread scraps carried in the sewage enter ecological circulation is prevented. Through the design to the recovery unit structure, can separate out filtering impurity from the aquatic, more convenience of customers handles. The clean water without the filtering impurities can be directly discharged out of the washing machine or introduced into the washing barrel for recycling, which is beneficial to saving water consumption.

EXAMPLE III

As shown in fig. 1 to 6, the present embodiment is further limited to the first embodiment, and the washing machine further includes a water collection tub 300, and the washing tub 100 is disposed inside the water collection tub 300. The mounting plate 310 in the first embodiment is the bottom of the water collecting bucket 300.

In this embodiment, the opening of the water collecting barrel 300 is higher than the opening of the washing barrel 100, and the water collecting barrel cover 320 with an annular structure is disposed at the opening of the water collecting barrel 300. The water collecting barrel cover 320 is internally provided with a hollow water flow channel, so that the water collecting barrel cover 320 is used as a water outlet device 231 connected with the water outlet end of the circulating filtering pipeline.

The water outlet end of the circulating filter pipeline, that is, the water outlet end of the water return pipeline 230, is communicated with the water flow channel, the water outlet of the water flow channel is located above the opening of the washing tub 100, water is returned from the opening of the washing tub 100 to the inside of the washing tub 100, and the spraying effect on the clothes in the tub can be realized.

In this embodiment, the inner ring side of the annular structure of the water collecting barrel cover 320 is projected in the vertical direction to fall into the range of the opening of the washing barrel 100. The water flow channel inside the water collection barrel cover 320 preferably extends along the radial direction of the water collection barrel 300, and the water outlet of the water flow channel is positioned on the inner wall of the annular structure of the water collection barrel cover 320. After the filtered water flows out from the water return pipeline 230, the filtered water flows from outside to inside along the radial direction of the water collecting barrel 300 in the water flow channel, and is influenced by inertia after flowing out from the water outlet, so that a large spraying range can be formed.

Set up a plurality of accessible rivers passageways and return water pipe 230 intercommunication delivery port on water collecting bucket lid 320, can further increase the range of spraying, the reinforcing sprays the effect.

The washing tub 100 is controlled to rotate in the circulating filtration process, so that the washing tub 100 and the water collecting tub cover 320 rotate relatively, filtered water can be sprayed on clothes in the tub more uniformly, and the spraying effect is further improved.

In this embodiment, the water collecting barrel cover 320 is disposed at the barrel opening of the water collecting barrel 300 to serve as the water outlet 231 for the filtered washing water, and by designing the internal structure of the water collecting barrel cover 320, the filtering backwater can be utilized to realize large-scale spraying of the clothes in the barrel, and the spraying effect is uniform, so that the washing effect of the clothes can be improved.

Example four

The present embodiment is different from the third embodiment in that: the filtering device is arranged at different positions in the washing machine.

This example provides the following three different embodiments.

In the first scheme, the filtering cavity of the filtering device is arranged on a base of the washing machine.

And in the second scheme, the filtering cavity of the filtering device is arranged on the outer surface of the bottom of the water collecting barrel or the outer surface of the wall of the water collecting barrel.

And in a third scheme, a filtering cavity of the filtering device is arranged on the inner wall of the box body.

Different from the mode that filter equipment realized connecting only through inserting the loop filter pipeline in the third embodiment, this embodiment is with filter equipment's filtration cavity direct mount on the inside base of washing machine, water-collecting bucket or the inside relatively more stable structures such as box, avoids filter equipment to appear rocking by a wide margin in the washing bucket, leads to its and loop filter pipeline's connection structure to appear not hard up the condition.

EXAMPLE five

The present embodiment is different from the third embodiment in that: the axis of the filtering mechanism is horizontally arranged.

Specifically, the orientation of the filtered water outlet on the filtering cavity is in the horizontal direction, the water inlet is vertically arranged upwards, and the sewage draining outlet is vertically arranged downwards. The washing water to be filtered and the water for washing the filtering mechanism during the self-cleaning operation enter from the top of the filtering cavity, and the water flow can smoothly flow out from the filtered water outlet or the sewage draining outlet under the action of the self gravity. The drain sets up in filtering the cavity bottom, and the sewage that carries filtering impurity is discharged downwards, because filtering impurity peels off the back from the filter screen and tends to assemble in filtering the cavity bottom, is favorable to filtering impurity's abundant discharge.

In this embodiment, other structures and control methods of the washing machine are the same as those in the third embodiment, and the operation and effect similar to those in the third embodiment are also provided.

EXAMPLE six

As shown in fig. 7 and 8, the present embodiment provides a filter device 600 applied to the above-described embodiments.

Specifically, the filtering apparatus 600 includes:

a filter cavity 610 having a water inlet 6101 and a filtered water outlet 6102, wherein the outer circumference of the filtered water outlet 6102 extends to the outside of the filter cavity 610 to form a sealing support 611;

the filtering mechanism 620 is rotatably arranged in the filtering cavity 610, one end of the filtering mechanism is provided with a water outlet joint 621 inserted in the sealing support part 611, and the water outlet joint 621 is rotatably and hermetically connected with the sealing support part 611;

a first bearing 631 sleeved on the water outlet joint 621;

the first sealing member 641 is disposed on one side of the first bearing 631 facing the inside of the filter chamber 610, and seals the gap between the water outlet 621 and the sealing support portion 611.

In detail, the filter mechanism 620 includes a filter screen holder and a filter screen 625, wherein the filter screen holder includes:

a filter screen support 623 located inside the filter cavity 610, wherein the filter screen 625 covers the surface of the filter screen support 623;

a water outlet joint 621 which is arranged at the left end of the filter screen supporting portion 623 and is rotatably inserted into the sealing supporting portion 611;

and a rotating support 622 arranged at the right end of the filter screen support 623 and rotatably connected with the filter chamber 610.

In the above solution, the first bearing 631 is disposed between the water outlet connector 621 and the sealing support portion 611, and supports the water outlet connector 621, so that the water outlet connector 621 rotates more smoothly in the sealing support portion 611, and meanwhile, the structure is stable, and the stable rotation of the filtering mechanism 620 in the filtering cavity 610 can be ensured. The first sealing member 641 is disposed at the right side of the first bearing 631, and the washing water in the filtering cavity 610 cannot enter the gap between the water outlet joint 621 and the sealing support portion 611, so as to prevent the first bearing 631 from contacting the water, avoid the failure of the first bearing 631, and ensure the effect of the first bearing 631. Meanwhile, the first sealing member 641 also prevents the unfiltered washing water from flowing out of the filtered water outlet 6102 through the sealing support 611, which may affect the thread waste removing efficiency of the filter apparatus 600.

In a specific scheme of this embodiment, the first sealing element 641 is disposed on the water outlet 621 in a sleeved manner, an inner wall of the first sealing element 641 is connected to an outer wall of the water outlet 621 in a sealing manner, and an outer wall of the first sealing element 641 is connected to an inner wall of the sealing support portion 611 in a rotatable sealing manner.

In a further aspect of this embodiment, the filter device 600 further includes a second sealing element 642, where the second sealing element 642 is disposed on a side of the first bearing 631 facing away from the inside of the filter cavity 610, and blocks a gap between the water outlet 621 and the sealing support 611.

Specifically, the second sealing element 642 is sleeved on the water outlet 621, an inner wall of the second sealing element 642 is connected with an outer wall of the water outlet 621 in a sealing manner, and an outer wall of the second sealing element 642 is connected with an inner wall of the sealing support portion 611 in a rotatable sealing manner.

In the above solution, the left side of the first bearing 631 is further provided with a second sealing element 642, and water flowing out through the water outlet joint 621 can be blocked by the second sealing element 642 and does not contact the first bearing 631. First bearing 631 is located between first sealing member 641 and second sealing member 642, has guaranteed to the at utmost that first bearing 631's installation environment is anhydrous, has avoided first bearing 631 to meet the water and has rusted, influences the pivoted smoothness nature of filter mechanism 620.

In a further aspect of this embodiment, the inner wall of the sealing support portion 611 has a stepped structure, and a first limiting surface 601, a second limiting surface 602, and a third limiting surface 603, which have an annular structure and gradually decrease in inner diameter, are sequentially formed from one end of the sealing support portion 611 to the outside of the filtering cavity 610.

The surface of the first sealing member 641 facing the outside of the filter chamber 610 abuts against the first stopper surface 601, the surface of the first bearing 631 facing the outside of the filter chamber 610 abuts against the second stopper surface 602, and the surface of the second sealing member 642 facing the outside of the filter chamber 610 abuts against the third stopper surface 603.

In the above scheme, a plurality of vertical annular limiting surfaces are formed on the inner wall of the sealing support portion 611 of the stepped structure and are respectively abutted against the respective left side surfaces of the first sealing element 641, the first bearing 631 and the second sealing element 642, so that the movement of the three in the axial direction of the water outlet joint 621 can be limited, and the looseness of a matching structure between the water outlet joint 621 and the sealing support portion 611 in the rotation process of the filter mechanism 620 is prevented.

In a preferred embodiment of this embodiment, an outer diameter of one end of the water outlet joint 621 close to the outside of the filtering cavity 610 is smaller than an outer diameter of the other end, and a fourth limiting surface 604 having an annular structure and perpendicular to an axis of the water outlet joint 621 is formed on an outer wall of the water outlet joint 621. The surface of the first bearing 631 facing the inside of the filter chamber 610 abuts against the fourth limiting surface 604.

By setting the outer diameter of the left end of the water outlet joint 621 smaller than that of the right end, a fourth stopper surface 604 facing the left side is formed at the abrupt change of the outer diameter and abuts against the right side surface of the first bearing 631. Therefore, the two sides of the first bearing 631 are both provided with the limiting structures, and the structure is more stable.

In this embodiment, one end of the sealing support portion 611 far away from the filtering cavity 610, that is, the left end of the sealing support portion 611 is connected to the filtering cavity flange 650, and the middle of the filtering cavity flange 650 is provided with a through hole 653 communicated with the water outlet connector 621. The outer periphery of the through-hole 653 extends away from the seal supporting portion 611 to form a pipe connecting portion 651.

Preferably, the surface of the filter cavity flange 650 facing the side of the sealing support 611 has a raised socket 652, and the socket 652 is inserted into the opening at the left end of the sealing support 611.

In the above solution, the left end of the sealing support portion 611 is connected to the filter flange 650, and a pipe connection portion 651 is formed on the filter flange 650, wherein the outer diameter of the pipe connection portion 651 is smaller than the outer diameter of the sealing support portion 611, and the inner diameter of the pipe connection portion 651 is preferably equal to the inner diameter of the water outlet connector 621. When the filter device 600 is installed in the washing machine, the filter device is connected with the pipeline through the pipeline connecting part 651 on the filter cavity flange 650, so that the filtered washing water without thread scraps is guided out, and the installation is easier compared with the mode that the pipeline is directly connected to the left end of the sealing supporting part 611.

The right side of filter cavity flange 650 has a plug portion 652 inserted into the left end opening of seal support 611 for positioning filter cavity flange 650 when assembled with seal support 611. The periphery of the filter cavity flange 650 and the periphery of the sealing support portion 611 are respectively provided with a plurality of fixing portions, and the fixing of the filter cavity flange 650 and the sealing support portion 611 is realized by passing screws through the fixing portions.

In a further aspect of this embodiment, the rotation supporting portion 622 at the right end of the filtering mechanism 620 extends to the outside of the filtering cavity 610 along the rotation axis thereof, and the filtering cavity 610 is provided with an installation opening 6104 for the rotation supporting portion 622 to pass through. The rotation support 622 is rotatably and hermetically connected to the mounting opening 6104.

In this embodiment, since the filtering mechanism 620 is driven by the driving mechanism to rotate, the driving mechanism is disposed outside the filtering chamber 610, and is prevented from contacting with the washing water. To this end, a rotation support 622 is protruded from the right end of the filter chamber 610, and a motor mounting portion 624 is provided at the right end of the rotation support 622 for connection with a driving mechanism, such as a motor.

Further, the outer circumference of the mounting opening 6104 extends along the axis of the rotation support 622 to the outside of the filtering cavity 610 to form a sleeve portion 612, and the rotation support 622 is sleeved with a third sealing element 643. An inner wall of the third seal 643 is sealingly connected with an outer wall of the rotation support 622, and an outer wall of the third seal 643 is rotatably sealingly connected with an inner wall of the sleeve portion 612.

A second bearing 632 is further disposed between the sleeve portion 612 and the rotation support portion 622, and the second bearing 632 is disposed on the rotation support portion 622 and located at a side of the third sealing element 643 facing the outside of the filtering cavity 610.

In the above-described embodiment, the third seal 643 is provided to prevent water in the filtering chamber 610 from leaking out of the mounting opening 6104, and the second bearing 632 is provided to support the rotation support 622, so that the relative rotation between the rotation support 622 and the sleeve portion 612 can be more smoothly ensured. The second bearing 632 is disposed on the right side of the third seal 643 and does not contact water in the filter chamber 610, thereby preventing failure.

In a preferred embodiment of the present invention, the sleeve portion 612 has an inner diameter smaller at one end thereof adjacent to the outside of the filter chamber 610 than at the other end thereof, and a fifth stopper surface 605 having an annular structure and perpendicular to the axis of the rotation support 622 is formed on the inner wall of the sleeve portion 612. The surface of the third seal 643 facing the outside of the filter chamber 610 abuts against the fifth stopper surface 605.

The outer diameter of the end of the rotating support 622 close to the outside of the filtering cavity 610 is smaller than that of the other end, and a sixth limiting surface 606 having an annular structure and perpendicular to the axis of the rotating support 622 is formed on the outer wall of the rotating support 622. The surface of the second bearing 632 facing the inside of the filter chamber 610 abuts against the sixth stopper surface 606.

In the above configuration, the sleeve portion 612 has a smaller inner diameter at the right end than at the left end, and a fifth stopper surface 605 facing the left side is formed at a sudden change in the inner diameter thereof to abut against the right side surface of the third seal 643. The right end of the rotation support 622 has an outer diameter smaller than that of the left end, and a sixth stopper 606 facing the right side is formed at a sudden change of the outer diameter and abuts against the left side surface of the second bearing 632. The above structure restricts the movement of the third seal 643 and the second bearing 632 in the axial direction of the rotation support portion 622, and the structure is stable.

In this embodiment, the first sealing element 641, the second sealing element 642 and the third sealing element 643 are all oil seals, and the right wall of the filtering cavity 610 is separated from the peripheral side wall thereof. The filter mechanism 620, the first sealing element 641, the second sealing element 642 and the first bearing 631 at the left end thereof are integrally installed inside the filter chamber 610, the third sealing element 643 and the second bearing 632 are installed at the right end thereof, and finally the right wall of the filter chamber 610 is fastened with the peripheral side wall thereof.

In this embodiment, the cross-sectional area of the middle area of the filter screen support portion 623 is fixed, and the left and right ends of the filter screen support portion 623 have tapered structures, so that the local surface of the filter screen 625 is inclined, which is beneficial to falling off of the attached thread scraps.

In this embodiment, the water inlet 6101 and the drainage outlet 6103 on the filtering cavity 610 are oriented perpendicular to the axial direction of the filtering mechanism 620.

Preferably, the filtering cavity 610 has a cylindrical structure, the water inlet 6101 is disposed near the right end of the filtering cavity 610, the sewage outlet 6103 is disposed near the left end of the filtering cavity 610, and the positions of the water inlet 6101 and the sewage outlet 6103 in the circumferential direction of the filtering cavity 610 are symmetrical.

In the above-described embodiment, the position of the water inlet 6101 is as far away from the water outlet connector 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 up and down, and staggered in the axial direction of the filtering cavity 610, which is beneficial to fully discharging the sewage after the filtering cavity 610 is cleaned with the filtering apparatus 600.

In a further aspect of this embodiment, the outer wall of the sealing support 611 is provided with a rib 613 extending along the radial direction of the sealing support 611, and the rib 613 is connected to the surface of the filtering cavity 610 where the filtered water outlet 6102 is located.

Since the seal support portion 611 protrudes from the left end surface of the filter chamber 610 by a certain length, the reinforcing rib 613 is provided to support the peripheral side wall thereof from the outside, and the strength of the seal support portion 611 is ensured.

In this embodiment, a rotatable filtering mechanism 620 is disposed in the filtering cavity 610 of the filtering device 600, and after the washing water to be filtered enters the filtering cavity 610, the water filtered to remove thread scraps enters the filtering mechanism 620 and flows out through the water outlet connector 621. The filterable thread scraps are attached to the outer surface of the filtering mechanism 620, and the filtering mechanism 620 is driven to rotate, so that the thread scraps can be separated, and water in the filtering cavity 610 is discharged through the sewage outlet 6103, so that the self-cleaning function of the filtering device 600 is realized, and the manual cleaning of a user is not needed.

The two ends of the filtering mechanism 620 are respectively provided with a first bearing 631 and a second bearing 632 for supporting, so as to ensure that the filtering mechanism 620 smoothly and stably rotates in the filtering cavity 610. Meanwhile, the first, second and

third seals

641, 642, 643 prevent the first and

second bearings

631, 632 from contacting water, and avoid the failure of the two.

EXAMPLE seven

The present embodiment is different from the first embodiment in that: the water retaining device is integrally arranged on a water retaining rib on the bottom of the washing barrel, and the water retaining rib surrounds the periphery of the first water drainage hole on the outer side of the bottom of the washing barrel.

The water retaining rib and the washing barrel are arranged into an integral structure, no gap exists between the water retaining rib and the washing barrel, and the trouble that sealing treatment needs to be carried out between the water retaining rib and the washing barrel is eliminated.

Furthermore, the water sealing device is integrally connected with the mounting plate below the washing barrel, no gap exists between the water sealing device and the mounting plate, and the trouble of sealing treatment between the water sealing device and the mounting plate can be eliminated.

In the embodiment, the water blocking rib is directly formed on the barrel bottom of the washing barrel to serve as the water blocking device, and the water sealing device and the mounting plate are also of an integrated structure. Meanwhile, the drainage chamber can be formed by directly matching and assembling the washing barrel and the mounting plate, so that the assembly steps are simplified, and the manufacturing cost can be saved.

Although the present invention has been described with reference to a preferred embodiment, it should be understood that various changes, substitutions and alterations can be made herein without departing from the spirit and scope of the invention as defined by the appended claims.

Claims

1. A washing machine, characterized by comprising:

a water inlet end of the circulating filter pipeline is communicated with the drainage cavity, a water outlet end of the circulating filter pipeline supplies water to the interior of the washing barrel, and a circulating pump is arranged on the circulating filter pipeline;

and the filtering device is arranged on the circulating filtering pipeline.

2. The washing machine as claimed in claim 1, further comprising a mounting plate disposed under the washing tub; the water sealing device is arranged on the mounting plate and is positioned between the mounting plate and the bottom of the washing barrel; the mounting plate is provided with a water outlet, and the water drainage cavity is communicated with a water drainage device through the water outlet.

3. The washing machine as claimed in claim 2, wherein the drain device includes a drain line and a drain valve provided on the drain line, and a water inlet end of the drain line is connected to a drain port of the mounting plate; and the water inlet end of the circulating filter pipeline is connected between the water inlet end of the drainage pipeline and the drainage valve.

4. The washing machine as claimed in claim 2 or 3, wherein the water blocking device includes a water blocking rib surrounding the periphery of the first drain hole by one turn at the outside of the bottom of the washing tub;

the water sealing part is sleeved on the water retaining rib;

5. The washing machine as claimed in claim 4, wherein a dynamic sealing element is arranged between the water blocking rib and the water sealing part, the dynamic sealing element is sleeved on the water blocking rib and is in dynamic sealing contact with the outer wall of the water blocking rib, and the dynamic sealing element is in sealing connection with the water sealing part;

preferably, the dynamic seal comprises:

the framework is embedded in the sealing body;

6. The washing machine as claimed in claim 4 or 5, wherein the water blocking device further comprises a water blocking cover, the water blocking cover is arranged at the upper end of the water blocking rib and fixedly connected with the bottom of the washing tub, and a second drainage hole communicated with the first drainage hole is formed in the water blocking cover;

7. The washing machine as claimed in any one of claims 1 to 6, wherein 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 positioned above the bucket opening of the washing bucket;

8. A washing machine as claimed in any one of claims 1 to 7, wherein the filtering means comprises:

the filtering mechanism is rotatably arranged in the filtering cavity;

preferably, the filtering chamber is mounted on a base of the washing machine;

9. The washing machine as claimed in claim 8, wherein the filtering chamber is further provided with a drain outlet for discharging the filtered impurities outwardly; the sewage draining port is connected with a sewage draining pipeline, and a sewage draining control valve is arranged on the sewage draining pipeline and used for controlling the on-off of the sewage draining pipeline;

10. A control method of a washing machine according to any one of claims 1 to 9, comprising: and starting the circulating pump, leading the water in the washing barrel into the circulating filtering pipeline through the drainage chamber, removing filtering impurities through the filtering device, and returning the water to the washing barrel again.