CN115613307A

CN115613307A - Filter equipment and washing machine

Info

Publication number: CN115613307A
Application number: CN202110790975.9A
Authority: CN
Inventors: 刘凯; 许升; 吕艳芬
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: 2021-07-13
Filing date: 2021-07-13
Publication date: 2023-01-17

Abstract

The invention belongs to the technical field of laundry equipment, and discloses a filtering device and a washing machine, wherein the filtering device comprises: the filter cavity is provided with a water inlet and a filtered water outlet, and the periphery of the filtered water outlet extends to the outside of the filter cavity to form a sealing support part; the filtering mechanism is rotatably arranged in the filtering cavity, one end of the filtering mechanism is provided with a water outlet joint inserted in the sealing support part, and the water outlet joint is rotatably and hermetically connected with the sealing support part; the first bearing is sleeved on the water outlet joint; the first sealing element is arranged on one side of the first bearing facing the inside of the filtering cavity body and used for plugging a gap between the water outlet joint and the sealing support part. According to the invention, the first bearing supports the water outlet joint, so that the filtering mechanism is more stably arranged in the filtering cavity and rotates more smoothly, the first sealing element can prevent the first bearing from contacting with water in the filtering cavity, and the action effect of the first bearing is ensured.

Description

Filter equipment and washing machine

Technical Field

The invention belongs to the technical field of laundry equipment, and particularly relates to a filtering device and a washing machine.

Background

In the process of washing the clothes by the washing machine, the clothes generate thread scraps to fall off and mix into the washing water due to friction between the clothes and friction between the clothes and the washing machine. If the thread scraps in the washing water cannot be removed, the thread scraps may adhere to the surface of the clothes after the washing is completed, and the washing effect of the clothes is affected. For this reason, the conventional washing machine is provided with a filter for filtering lint, and washing water is circulated through the filter to remove lint from the washing water during washing.

The filter of the existing washing machine is generally arranged in the inner tub or the drainage pump for filtering thread scraps and impurities in the washing water. However, after the washing machine is used for a long time, the filter is filled with the thread scraps and sundries, the filtering effect of the filter is influenced, the drainage valve/drainage pump is blocked, bacteria are easy to breed, the drainage valve/drainage pump needs to be cleaned in time, otherwise, the washing water is polluted, the clothes are polluted secondarily, and the health of a user is influenced. However, most washing machines require the user to remove the filter for manual cleaning, and are inconvenient to operate.

On the other hand, the partial filter considers the blockage of the thread scraps on the filter holes, the hole diameter of the filter holes is usually set to be larger, but the fine thread scraps on some clothes cannot be filtered, so that the part of thread scraps are adhered on the clothes, and the user experience is influenced. Meanwhile, part of the thread scraps can be discharged along with water flow and enter ecological cycle, and the health of a human body is finally influenced.

Chinese patent with application number 201310612183.8 discloses a filter and washing machine, and this filter includes filter barrel and filter screen, water inlet, delivery port and drain have been seted up on the barrel, the filter screen install in the barrel to separate the inner chamber of filter barrel for inside appearance chamber and outside appearance chamber two parts, inside appearance chamber upper end with the water inlet is connected, the lower extreme with the drain is connected, outside appearance chamber with the delivery port meets, and sewage flows into inside appearance chamber from the water inlet, goes into outside appearance chamber and flows through the delivery port after the filter screen filters, and filterable impurity by the drain is discharged.

Among the above scheme, through the setting to the filter screen structure, make filterable impurity be difficult to hang on the filter screen, discharge more easily, reduced the demand to the manual clearance filter screen of user, but can not realize the self-cleaning of filter completely, still need the manual clearance of user when necessary.

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 filtering device and a washing machine, wherein the filtering device consists of a filtering cavity and a filtering mechanism which is rotatably arranged in the filtering cavity, filtered thread scraps are remained on the outer surface of the filtering mechanism, automatic cleaning can be realized by rotating the filtering mechanism, the joint of a water outlet joint of the filtering mechanism and the filtering cavity is supported by a first bearing, so that the filtering mechanism can stably rotate in the filtering cavity, and meanwhile, a first sealing element is arranged for sealing to separate the first bearing from water and prevent failure.

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

a filtration device comprising:

the filter cavity is provided with a water inlet and a filtered water outlet, and the periphery of the filtered water outlet extends to the outside of the filter cavity to form a sealing support part;

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

the first bearing is sleeved on the water outlet joint;

the first sealing element is arranged on one side, facing the inside of the filtering cavity, of the first bearing and used for blocking a gap between the water outlet connector and the sealing support part.

Furthermore, the first sealing element is sleeved on the water outlet connector, the inner wall of the first sealing element is in sealing connection with the outer wall of the water outlet connector, and the outer wall of the first sealing element is in rotatable sealing connection with the inner wall of the sealing support portion.

The second sealing element is arranged on one side of the first bearing, which is back to the interior of the filtering cavity, and is used for plugging a gap between the water outlet joint and the sealing support part;

preferably, the second sealing element is sleeved on the water outlet connector, the inner wall of the second sealing element is in sealing connection with the outer wall of the water outlet connector, and the outer wall of the second sealing element is in rotatable sealing connection with the inner wall of the sealing support portion.

Furthermore, the inner wall of the sealing support part is provided with a step structure, a first limit surface, a second limit surface and a third limit surface which are provided with annular structures and have gradually reduced inner diameters are sequentially formed from one end of the sealing support part to the outside of the filtering cavity;

the surface of the first sealing element facing the outer side of the filtering cavity is abutted with the first limiting surface, the surface of the first bearing facing the outer side of the filtering cavity is abutted with the second limiting surface, and the surface of the second sealing element facing the outer side of the filtering cavity is abutted with the third limiting surface;

preferably, the outer diameter of one end, close to the outside of the filtering cavity, of the water outlet joint is smaller than that of the other end of the water outlet joint, and a fourth limiting surface which is of an annular structure and is perpendicular to the axis of the water outlet joint is formed on the outer wall of the water outlet joint; the surface of the first bearing facing the inner side of the filtering cavity is abutted with the fourth limiting surface.

Furthermore, one end of the sealing support part, which is far away from the filtering cavity, is connected with a filtering cavity flange, and the middle part of the filtering cavity flange is provided with a through hole communicated with the water outlet joint; the periphery of the through opening extends back to the sealing support part to form a connecting part;

preferably, the surface of the filter cavity flange facing one side of the sealing support part is provided with a convex inserting part, and the inserting part is inserted into the opening at one end of the sealing support part.

Furthermore, the other end of the filtering mechanism is provided with a rotating supporting part which is formed by extending along the rotating axis to the outside of the filtering cavity body, and the filtering cavity body is provided with an installation opening for the rotating supporting part to pass through; the rotary supporting part is rotatably and hermetically connected with the mounting opening;

preferably, the periphery of the mounting opening extends to the outside of the filtering cavity along the axis of the rotating support part to form a sleeve part, and the rotating support part is sleeved with a third sealing element; the inner wall of the third sealing element is in sealing connection with the outer wall of the rotating support part, and the outer wall of the third sealing element is in sealing connection with the inner wall of the sleeve part in a rotating way;

preferably, the inner diameter of one end of the sleeve part close to the outside of the filtering cavity is smaller than that of the other end, and a fifth limiting surface which has an annular structure and is vertical to the axis of the rotation supporting part is formed on the inner wall of the sleeve part; and the surface of the third sealing element facing the outer side of the filtering cavity is abutted with the fifth limiting surface.

Furthermore, a second bearing is arranged between the sleeve part and the rotating support part, is sleeved on the rotating support part and is positioned on one side of the third sealing element facing the outside of the filtering cavity;

preferably, the outer diameter of one end of the rotating support part, which is close to the outside of the filtering cavity, is smaller than that of the other end of the rotating support part, and a sixth limiting surface which is provided with an annular structure and is vertical to the axis of the rotating support part is formed on the outer wall of the rotating support part; the surface of the second bearing facing the inner side of the filtering cavity is abutted with the sixth limiting surface.

Furthermore, a sewage draining outlet is also formed in the filtering cavity, and the direction of the water inlet and the sewage draining outlet is vertical to the axial direction of the filtering mechanism;

preferably, the filtering cavity has a cylindrical structure, the water inlet is arranged near one end of the filtering cavity, the drain outlet is arranged near the other end of the filtering cavity, and the water inlet and the drain outlet are symmetrical in position in the circumferential direction of the filtering cavity.

Furthermore, the outer wall of the sealing support part is provided with a reinforcing rib extending along the radial direction of the sealing support part, and the reinforcing rib is connected with the surface of the filtering water outlet on the filtering cavity.

The invention also aims to provide a washing machine, which comprises a water containing barrel and the filtering device, wherein the water inlet and the filtered water outlet of the filtering cavity are respectively communicated with the water containing barrel through pipelines.

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

In the filtering device, the filtering mechanism is rotatably arranged in the filtering cavity, the filtering device can be self-cleaned by controlling the filtering mechanism to rotate, the water outlet joint at one end of the filtering mechanism is inserted in the sealing support part and supported by the first bearing, so that the stable rotation of the filtering mechanism can be ensured, the first sealing element can be arranged to avoid the first bearing from contacting with water in the filtering cavity, the first bearing is prevented from being failed, and the action effect of the first bearing is ensured.

According to the filter device, the two sides of the first bearing are arranged between the first sealing element and the second sealing element, so that the mounting environment of the first bearing is ensured to be anhydrous to the greatest extent, and the first bearing is prevented from rusting when meeting water to influence the smoothness of the rotation of the filter mechanism. Through the inner wall to sealed supporting part to and go out the outer wall that water swivel carries out structural design, form a plurality of spacing faces, can restrict first bearing, first sealing member and second sealing member and connect the ascending removal in the axial at the water swivel, the structure is more stable.

In the filtering device, the other end of the filtering mechanism is provided with the rotating supporting part extending out of the filtering cavity, so that the filtering device is more convenient to be connected with the driving mechanism to drive the filtering mechanism to rotate. The rotation supporting part supports through the second bearing, can smoothly and stably rotate, and simultaneously prevents the second bearing from contacting with water through the third sealing member, avoids the second bearing to become invalid.

In the washing machine, the filtering device is communicated with the water containing barrel through a pipeline to form a circulating water path, washing water in the water containing barrel enters the filtering cavity through the water inlet, after being filtered by the filtering mechanism, thread scraps carried in the washing water are blocked on the surface of the filtering mechanism, and the washing water without the thread scraps flows out of the filtering water outlet and returns to the water containing barrel again, so that the content of the thread scraps in the washing water can be reduced, and the washing effect of clothes is improved.

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 also be derived from them without inventive effort. In the drawings:

FIG. 1 is a schematic structural diagram of a filtering apparatus according to an embodiment of the present invention;

FIG. 2 isbase:Sub>A schematic view of section A-A of FIG. 1 in accordance with the present invention;

FIG. 3 is a schematic view of a washing machine according to a second embodiment of the present invention;

FIG. 4 is an enlarged schematic view of the invention at B of FIG. 3;

FIG. 5 is a schematic view showing a cleaning process of the filter device according to the second embodiment of the present invention;

FIG. 6 is a schematic view illustrating a draining process of a washing machine according to a second embodiment of the present invention;

FIG. 7 is a schematic structural view of a washing machine according to a third embodiment of the present invention;

FIG. 8 is a schematic view of a washing machine cleaning the filter after the middle rinsing is finished according to a fourth embodiment of the present invention;

FIG. 9 is a schematic diagram of a first stage of cleaning the filter device after the last rinsing of the washing machine according to the fourth embodiment of the present invention;

FIG. 10 is a schematic diagram of a second stage of cleaning the filter device after the last rinsing of the washing machine according to the fourth embodiment of the present invention;

fig. 11 is a third schematic diagram of the washing machine cleaning the filter device after the last rinsing in the fourth embodiment of the present invention.

In the figure: 100. a water containing cylinder; 110. a window pad; 210. a drain line; 220. a circulation line; 230. a water return pipeline; 231. a backwater control valve; 240. a sewage draining pipeline; 241. a blowdown control valve; 250. an outer discharge pipeline; 260. a drain pipe of the water containing barrel; 270. a switching device; 400. a circulation pump; 500. a recovery device;

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 connecting portion; 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", "left", "right", "vertical", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, 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" and "connected" are to be interpreted broadly, e.g., as being either fixedly connected, detachably connected, or integrally 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 a specific case to those of ordinary skill in the art.

Example one

As shown in fig. 1 and 2, the filtering apparatus 600 according to the present embodiment 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.

Specifically, filter mechanism 620 includes filter screen support and 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;

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.

The filtering apparatus 600 of the present embodiment may be installed in a washing device for filtering and removing lint carried in washing water. Including but not limited to washing machines, nursing machines, dishwashers, etc.

Inside the washing equipment to be filtered washing water is carried to filter 600, enters into the interior of filter cavity 610 from water inlet 6101, and when passing through filter mechanism 620, the thread scraps in the washing water are blocked by filter screen 625 and attached to the surface of filter screen 625, so that the washing water entering into the interior of filter screen 625 no longer contains thread scraps. The filtered clean washing water flows out of the filtering chamber 610 through the water outlet connector 621 and finally flows out of the filtering chamber 610 through the sealing support 611 at the filtered water outlet 6102.

When the filtering device 600 needs to be cleaned, the filtering mechanism 620 can be driven to rotate in the filtering cavity 610, so as to stir the water remaining in the filtering cavity 610, and the thread scraps can be peeled off from the filtering net 625 and be melted into the water in the filtering cavity 610 under the action of centrifugal force and the stirring water flow. The filtering cavity 610 is further provided with a drain outlet 6103, and the water and the thread scraps remained in the filtering cavity 610 can be discharged through the drain outlet 6103.

The filter device 600 of this embodiment can realize self-cleaning function through pivoted filtering mechanism 620, need not the user and takes off filter device 600 manual washing, convenient to use.

Set up first bearing 631 between water outlet connector 621 and the sealed support portion 611, support water outlet connector 621, make the rotation of water outlet connector 621 in the sealed support portion 611 more smooth and easy, stable in structure simultaneously can guarantee the stable rotation of filter mechanism 620 in filtering cavity 610. 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 sleeved on the water outlet 621, 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 scheme 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 connector 621 and the sealing support 611.

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

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 limit 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 limiting surface 604 facing the left side is formed at the abrupt change position 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 support 611 to form a connection 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 connection portion 651 is formed on the filter flange 650, wherein the outer diameter of the connection portion 651 is smaller than the outer diameter of the sealing support portion 611, and the inner diameter of the 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, it is connected to the pipe through the connection portion 651, so that the washing water without thread scraps after filtering can be discharged, and the installation is easier than a mode in which the pipe is directly connected to the left end of the sealing support portion 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 achieved through the passing of screws through the fixing portions.

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

In this embodiment, the driving mechanism is connected to the filtering mechanism 620, so that the filtering mechanism 620 is driven to rotate when the filtering device 600 realizes the self-cleaning function. A rotation support 622 is extended from the right end of the filtering 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 member 643. An inner wall of the third seal 643 is sealingly connected to an outer wall of the rotation support 622, and an outer wall of the third seal 643 is sealingly connected to 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 one 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 seal 641, the second seal 642 and the third seal 643 are oil seals, and the right wall and the peripheral wall of the filtering cavity 610 are provided separately. 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 mounted inside the filter cavity 610, the third sealing element 643 and the second bearing 632 are mounted at the right end thereof, and finally the right wall of the filter cavity 610 is fastened with the peripheral wall thereof.

In this embodiment, the cross-sectional area of the middle region of the filter screen support portion 623 is constant, and the left and right ends thereof have a tapered structure, so that the local surface of the filter screen 625 is inclined, which is beneficial to the falling off of the adhered lint.

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 drain 6103 is disposed near the left end of the filtering cavity 610, and the positions of the water inlet 6101 and the drain 6103 are symmetrical in the circumferential direction of the filtering cavity 610.

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 bearing 631 and the second bearing 632 are prevented from contacting water by the arrangement of the first seal 641, the second seal 642 and the third seal 643, and the failure of the first bearing 631 and the second bearing 632 is avoided.

Example two

As shown in fig. 3 to 6, the present embodiment provides a washing machine including a water container 100 and a filter device 600 according to the first embodiment. Wherein, the water inlet 6101 and the filtered water outlet 6102 of the filtering cavity 610 are respectively communicated with the water container 100 through a pipeline, thereby forming a circular filtering pipeline with two ends respectively communicated with the water container 100 and passing through the filtering device 600.

Specifically, the water containing barrel 100 is communicated with the circulating pump 400 through the water containing barrel water drainage pipe 260, the water outlet end of the circulating pump 400 is connected with the water drainage pipeline 210, and the water drainage pipeline 210 is communicated with the outer discharge pipeline 250 and the circulating pipeline 220 through the switching device 270. The outer discharge pipe 250 is connected to the outside of the washing machine for discharging water, and the water outlet end of the circulation pipe 220 is connected to the water inlet 6101 of the filtering cavity 610. The filtered water outlet 6102 of the filtering chamber 610 is connected to the water return pipe 230, and the water return pipe 230 is connected to the window mat 110 at the front end of the water container 100, so as to communicate with the inside of the water container 100.

In this embodiment, the filtering apparatus 600 is installed horizontally, i.e. the water inlet 6101 on the filtering cavity 610 faces upward, and the orientation of the filtered water outlet 6102 is parallel to the horizontal direction.

In the above solution, the filtering device 600 is communicated with the water drum 100 through a pipeline to form a circulating water path, the washing water in the water drum 100 enters the filtering cavity 610 through the water inlet 6101, after being filtered by the filtering mechanism 620, the thread scraps carried in the washing water are blocked on the surface of the filtering mechanism 620, the washing water without thread scraps flows out of the filtered water outlet 6102 and returns to the water drum 100 again, so that the thread scraps content in the washing water can be reduced, and the washing effect of the clothes can be improved.

In detail, as shown in fig. 3 and 4, during the washing and rinsing processes of the washing machine, the circulation pump 400 is turned on, and the switching device 270 is controlled to communicate the drain line 210 with the circulation line 220. The circulation pump 400 pumps out the washing water with the lint in the water container 100, and the washing water is sequentially supplied into the filter device 600 through the water container drain pipe 260, the drain line 210 and the circulation line 220. After the washing water to be filtered passes through the filter device 600, the filtered washing water flows out of the filter device 600, passes through the water return pipe 230, and returns to the water containing drum 100 again through the window mat 110. In the washing process, the washing water is continuously circulated through the filtering device 600, so that the thread scraps in the washing water are filtered out, and the washing effect is improved.

In this embodiment, the left end of the filtering mechanism 620 extends out of the filtering cavity 610 and is connected to the driving mechanism 660 for driving the filtering mechanism 620 to rotate. The sewage outlet 6103 of the filtering cavity 610 is arranged downward and connected with one end of the sewage pipeline 240, the other end of the sewage pipeline 240 is connected with the recycling device 500, and the recycling device 500 is used for collecting sewage with thread scraps discharged from the filtering device 600.

Furthermore, the water return pipe 230 is provided with a return water control valve 231 capable of controlling the on-off of the water return pipe 230, and the sewage discharge pipe 240 is provided with a sewage discharge control valve 241 capable of controlling the on-off of the sewage discharge pipe 240. In the washing process, when the thread scraps are filtered through the circulation of the washing water, the return control valve 231 opens and conducts the return pipe 230, and the drain control valve 241 closes and blocks the drain pipe 240, so that the washing water entering the filtering device 600 can be filtered by the filtering mechanism 620 and then returned to the water containing barrel 100 through the return pipe 230.

In this embodiment, the filter device 600 is self-cleaning before washing or rinsing is completed and draining is performed. Specifically, as shown in fig. 5, the return control valve 231 closes the block return pipe 230, and the drain control valve 241 opens the drain pipe 240. The circulation pump 400 is in operation, and the switching device communicates 270 the drain line 210 and the circulation line 220, and sends the water in the water cartridge 100 to the filter device 600. Meanwhile, the driving mechanism 660 is started to drive the filtering mechanism 620 to rotate at a high speed, so that the water in the filtering cavity 610 is stirred, the thread scraps attached to the surface of the filtering mechanism 620 are peeled off under the dual actions of centrifugal force and surging water flow, and the thread scraps are conveyed to the recovery device 500 along with the water in the filtering cavity 610 through the sewage discharge pipeline 240.

The filter screen capable of blocking thread scraps is arranged in the recovery device 500, clear water filtered by the filter screen can be conveyed to the main water inlet pipe of the washing machine through the arranged pipeline for recycling, the recovery device 500 can be inserted into or drawn out of the box body of the washing machine, and a user can take out the recovery device 500 to clean the thread scraps on the filter screen.

Fig. 6 is a schematic diagram illustrating a drainage process of the washing machine, in which the switching device 270 is actuated to connect the drainage pipeline 210 and the external drainage pipeline 250, the circulation pump 400 is in an operating state to pump out water in the water container 100, and the drainage pipeline 210 is conveyed to the external drainage pipeline 250 to be drained out of the washing machine.

In this embodiment, the washing machine is provided with only one circulation pump 400, and the communication mode of the pipeline is changed by the switching device 270, so that two functions of circulation filtration and drainage of the washing water are realized, the circulation pump and the drainage pump do not need to be respectively provided, and two mutually independent pipelines are respectively provided for the circulation filtration and the drainage of the washing water, so that the internal structure of the washing machine is simpler, and the space is saved.

EXAMPLE III

As shown in fig. 7, the present embodiment is different from the second embodiment in that: the filtering apparatus 600 is vertically installed in the washing machine. Specifically, the water inlet 6101 and the sewage outlet 6103 on the filtering cavity 610 are horizontal, the water inlet 6101 is higher than the sewage outlet 6103, and the filtered water outlet 6102 is disposed downward.

In this embodiment, the specific connection manner of the pipelines is the same as that of the embodiment two, and the working process of the washing machine is also the same as that of the embodiment two.

Example four

As shown in fig. 3 and 4, the present embodiment provides a control method of a washing machine according to the second embodiment for sufficiently discharging contaminated water in the filtering device 600.

Specifically, the control method comprises the following steps:

starting the circulating pump 400, conducting the circulating filtering pipeline, and circularly filtering and rinsing by the washing machine;

after rinsing, the circulation pump 400 is turned off;

the driving mechanism 660 is started to drive the filtering mechanism 620 to rotate in the filtering cavity 610;

when the first set condition is reached, the circulation pump 400 is started, and the drain control valve 241 is opened to conduct the drain line 240;

and when the second set condition is reached, the circulating filtering pipeline is cut off.

Preferably, after the first set condition is reached, the driving mechanism 660 remains open, and the filtering mechanism 620 is driven to rotate continuously.

In this embodiment, the conducting circulation filtering pipeline includes: the switching device 270 conducts the filter device 600 and the water outlet side of the circulation pump 400, and opens the return control valve 231 to conduct the return pipe 230. The cut-off circulating filtration pipeline comprises: the switching device 270 connects the outer discharge pipe 250 and the water outlet of the circulation pump 400.

It will be appreciated that the shut-off of the recirculation filter circuit can also be achieved by turning off the recirculation pump 400.

In the above scheme, the washing machine performs the circulation filtration of the rinsing water during the rinsing process, and the filtering device 600 and the circulation filtration pipeline are always filled with the rinsing water.

As shown in fig. 9, after the circulation pump 400 is turned off after rinsing is finished, the water in the drain line 210 and the circulation line 220 flows back downward under gravity, and at most, the water level in the drain line 210 is level with the water level in the water container 100, and the line between the water level and the filter 600 is filled with air. However, the filtering unit 600 is located below the circulation line 220, and water therein does not flow back through the circulation line 220. The circulating pump 400 is closed and the return water control valve 231 is also closed, and at this time, the drain control valve 241 is in a closed state, and water in the filtering apparatus 600 is retained in the filtering chamber 610 and is not discharged to the outside.

As shown in fig. 10, after the driving mechanism 660 is turned on, the filtering mechanism 620 is driven to rotate at a high speed, so that the filtered impurities such as thread scraps attached to the surface are peeled off from the surface of the filtering mechanism 620 under the action of centrifugal force. At this time, since the backwater control valve 231 and the blowdown control valve 241 are both in the closed state, water in the filtering cavity 610 does not flow out, the filtering mechanism 620 rotating at a high speed can also stir water flow in the filtering cavity 610, and the formed stirred water flow causes a certain impact force to the surface of the filtering mechanism 620, and can also cause lint to fall off. Lint that is stripped from the surface of the filter mechanism 620 is dissolved into the water in the filter chamber 610.

As shown in fig. 11, when the circulation pump 400 is turned on, the drain control valve 241 is also opened to conduct the drain line 240, so that the sewage in the filtering apparatus 600 can be discharged from the drain outlet 6103. The circulation pump 400 is opened to press the air in the drain pipeline 210 and the circulation pipeline 220 into the filtering device 600, so that the sewage carrying the thread scraps in the filtering device 600 is completely discharged through the sewage outlet 6103 under the air pressure, the sewage residue in the filtering device 600 is avoided, and the cleaning effect on the filtering device 600 is good. The drain control valve 241 is opened while the circulation pump 400 is turned on, so that pressure generated when air is introduced into the filtering apparatus 600 is ensured, and thus, sufficient discharge of sewage in the filtering apparatus 600 can be ensured.

In order to prevent the water in the water container 100 from entering the filtering device 600 through the circulation pipeline 220 after the sewage in the filtering device 600 is drained, the washing machine is preset with a second set condition, and when the second set condition is reached, the circulation filtering pipeline is cut off, and the water in the water container 100 is stopped from being conveyed to the filtering device 600.

In a specific aspect of this embodiment, the first setting condition may be that the circulation pump 400 is turned off for a first setting time t ₁ The second setting condition may be that the circulation pump 400 is turned on for a second setting time t ₂ 。

In the above scheme, the first set time t ₁ And a second set time t ₂ The specific value of (a) can be obtained in advance through a large number of experiments and directly written into a control program of the washing machine.

Specifically, the first set time t ₁ Is about the maximum time period required for the water level in the drain pipeline 210 to start to fall until stop, and the second set time t ₂ Is approximately equal to the water in the drain line 210The shortest time period required for the circulation pump 400 to rise to near the top of the drain line 210 after being turned on. So, can guarantee that circulating pump 400 closes the period, can get into a larger amount of air in the pipeline, simultaneously, effectively avoid circulating pump 400 to open the back again and have the condition that water got into filter equipment 600.

In another aspect of this embodiment, the water level height may also be used as the first setting condition and the second setting condition. Specifically, the first setting condition is: in the pipe between the circulation pump 400 and the filtering apparatus 600, the water level reaches the first set value H ₁ . The second setting condition is as follows: in the pipe between the circulation pump 400 and the filter unit 600, the water level reaches the second set value H ₂ . Wherein H ₁ <H ₂ 。

In this embodiment, the water level is specifically the height of the water level in the drain pipeline 210, and a water level detection device may be disposed in the drain pipeline 210 of the washing machine to detect the water level in the drain pipeline 210.

In the above-described aspect, the first set value H ₁ Is greater than and as close as possible to the maximum water level height of the washing machine to ensure that the water level in the drain line 210 can be lowered to the first set value H after the circulation pump 400 is turned off ₁ 。

The water level received from the washing machine in the drain line 210 rises to the second set value H ₂ Until the switching device 270 switches on the drain line 210 and the outer drain line 250, there is generally a certain time difference. In order to prevent water from entering the filter 600 after the circulation pump 400 is turned on due to a response delay, the second setting value H ₂ A certain difference Δ H is required between the value of (a) and the water level corresponding to the top end of the drain line 210. The specific value of the difference value delta H can be obtained through a large number of experiments carried out in advance, so that the fact that the water level received by the washing machine reaches the second set value H is guaranteed ₂ After the signal is received, the switching device 270 is controlled to complete the switching of the water circuit with sufficient response time.

In a further scheme of this embodiment, if the washing machine determines that the current operation process is the last rinsing stage in the washing program, the circulation pump 400 is turned off after the rinsing is finished, and the circulation pump 400 is turned on after the first set condition is reached.

If the washing machine judges that the current running process is not the last rinsing stage in the washing program, the following operations are executed after the rinsing is finished:

the circulation pump 400 maintains the operation state;

when the third set condition is reached, the circulating filtration pipeline is cut off;

in the above scheme, for the intermediate rinsing stage, since the washing machine needs to continue to operate after the washing machine, that is, the rinsing water circulates through the filtering device 600 for filtering, the sewage carrying the lint in the filtering device 600 may not be completely discharged, and only the lint attached to the surface of the filtering mechanism 620 needs to be removed.

As shown in fig. 8, after the rinsing is finished, the return water control valve 231 is closed, the drain control valve 241 is opened, the circulating pump 400 keeps operating, the water in the water containing barrel 100 is continuously conveyed to the filtering device 600 by the circulating pump 400, the interior of the filtering device 600 is flushed, and the flushed sewage is discharged into the drain pipeline 240 through the drain outlet 6103.

In this embodiment, the third setting condition may be that the rinsing is finished for a third preset time t ₃ The values are obtained in advance through experiments and written into a control program, so that the thread scraps attached to the surface of the filtering mechanism 620 can be basically removed.

Alternatively, the water level in the water drum 100 may be lowered to a predetermined value Δ H ₁ When the circulation filtering pipeline is cut off, that is, the switching device 270 is controlled to connect the drainage pipeline 210 and the external drainage pipeline 250, the circulation pump 400 continues to operate, and the residual water in the water containing barrel 100 is drained out of the washing machine.

In the preferred scheme of this embodiment, after rinsing, start actuating mechanism 660, drive filtering mechanism 620 and rotate at a high speed in filtering cavity 610, can stir the water in filtering cavity 610, make the adnexed thread scraps under the dual function of centrifugal force and the water current of stirring, peel off from filtering mechanism 620 surface, merge into the water in filtering cavity 610, discharge filtering cavity 610 by drain 6103 again, the cleaning efficiency of thread scraps is high.

In this embodiment, the washing machine performs an operation of turning off the circulation pump 400 and then turning on the circulation pump 400 only at the end of the last rinsing to completely drain the sewage in the filtering apparatus 600. And when the middle rinsing is finished, the circulating pump 400 keeps the running state, so that the influence on the service life of the circulating pump 400 caused by frequent opening and closing of the circulating pump in the running process of the washing machine is avoided.

In this embodiment, the washing machine also cleans the filtering device 600 after the washing is finished, and the specific control method is as follows:

starting the circulating pump 400, conducting the water outlet end of the circulating pump 400 and the filtering device 600 by the switching device 270, opening the water return control valve 231, and carrying out circulating filtering washing by the washing machine;

after washing, the circulating pump 400 keeps running, the water return control valve 231 is closed, and the sewage discharge control valve 241 is opened;

when the fourth set condition is reached, the switching device 270 connects the water outlet end of the circulation pump 400 and the external discharge pipeline 250.

Wherein, the fourth setting condition may be that the washing end reaches a fourth preset time t ₄ Or the water level falling height in the water container 100 can reach the preset value delta H ₂ 。

After washing, the subsequent washing process is performed with a circulating filtration rinsing process, which is similar to the intermediate rinsing process, and the sewage in the filtering device 600 does not need to be completely discharged, so that the circulating pump 400 can be kept in an operating state without being turned off.

In this embodiment, after the washing and the intermediate rinsing are finished, the washing machine controls the circulating pump 400 to keep operating, the water in the water container 100 is transported to the filtering device 600 for washing, and the sewage after washing is discharged from the sewage outlet 6103 of the filtering device 600. After the last rinsing is finished, the circulating pump 400 is closed firstly, air enters the pipeline, the circulating pump 400 is restarted, air in the pipeline is pressed into the filtering device 600, so that sewage in the pipeline is completely discharged, no sewage residue exists in the filtering device 600 after the washing machine stops running, and bacteria breeding can be effectively avoided. Meanwhile, the washing machine performs the operation of turning off the circulation pump 400 and then turning on the circulation pump only after the last rinsing is finished, thereby reducing unnecessary turning on and off operations of the circulation pump 400 and prolonging the service life of the circulation pump 400.

Although the present invention has been described with reference to the preferred embodiments, it will be understood by those skilled in the art that various changes may be made and equivalents may be substituted for elements thereof without departing from the scope of the present invention.

Claims

1. A filter device, comprising:

the filter cavity is provided with a water inlet and a filtered water outlet, and the periphery of the filtered water outlet extends to the outside of the filter cavity to form a sealed supporting part;

the first bearing is sleeved on the water outlet joint;

the first sealing element is arranged on one side of the first bearing facing the inside of the filtering cavity body and used for plugging a gap between the water outlet joint and the sealing support part.

2. The filter device according to claim 1, wherein the first sealing member is sleeved on the water outlet connector, an inner wall of the first sealing member is in sealing connection with an outer wall of the water outlet connector, and an outer wall of the first sealing member is in rotatable sealing connection with an inner wall of the sealing support portion.

3. The filtering device as claimed in claim 2, further comprising a second sealing member disposed on a side of the first bearing facing away from the inside of the filtering chamber for sealing a gap between the water outlet joint and the sealing support portion;

4. The filtering device according to claim 3, wherein the inner wall of the sealing support part has a stepped structure, and a first limiting surface, a second limiting surface and a third limiting surface which have annular structures and gradually reduce the inner diameter are sequentially formed from one end of the sealing support part to the outside of the filtering cavity;

5. The filter device according to any one of claims 1 to 4, wherein one end of the sealing support part, which is far away from the filter cavity, is connected with a filter cavity flange, and a through hole communicated with the water outlet connector is formed in the middle of the filter cavity flange; the periphery of the through hole extends back to the sealing support part to form a connecting part;

preferably, the surface of the filter cavity flange facing one side of the sealing support part is provided with a raised inserting part, and the inserting part is inserted into the opening at one end of the sealing support part.

6. The filtering device according to any one of claims 1 to 5, wherein the other end of the filtering mechanism has a rotation support portion extending along the rotation axis to the outside of the filtering chamber, and the filtering chamber is provided with a mounting opening for the rotation support portion to pass through; the rotary supporting part is rotatably and hermetically connected with the mounting opening;

preferably, the periphery of the mounting opening extends outward of the filtering cavity along the axis of the rotation support part to form a sleeve part, and the rotation support part is sleeved with a third sealing element; the inner wall of the third sealing element is in sealing connection with the outer wall of the rotating support part, and the outer wall of the third sealing element is in sealing connection with the inner wall of the sleeve part in a rotating way;

preferably, the inner diameter of one end of the sleeve part close to the outside of the filtering cavity is smaller than that of the other end, and a fifth limiting surface which has an annular structure and is vertical to the axis of the rotating support part is formed on the inner wall of the sleeve part; and the surface of the third sealing element facing the outer side of the filtering cavity is abutted with the fifth limiting surface.

7. The filter device according to claim 6, wherein a second bearing is further disposed between the sleeve portion and the rotation support portion, the second bearing is sleeved on the rotation support portion and is located on a side of the third sealing member facing the outside of the filter cavity;

8. The filter device according to any one of claims 1 to 7, wherein the filter chamber is further provided with a sewage draining outlet, and the water inlet and the sewage draining outlet are oriented perpendicular to the axial direction of the filter mechanism;

9. A filter device according to any one of claims 1-8, wherein the outer wall of the seal support is provided with ribs extending in the radial direction of the seal support, said ribs being connected to the surface of the filter chamber where the filtered water outlet is located.

10. A washing machine comprising a water cartridge, characterized by further comprising a filtering device as claimed in any one of claims 1 to 9, wherein the water inlet and the filtered water outlet of the filtering chamber are respectively communicated with the water cartridge through pipelines.