Washing machine outer barrel cover filtering device and washing machine

Abstract

The utility model discloses a washing machine outer barrel cover filtering device and a washing machine. The filtering part is mounted below the cover body; the water inlet end is arranged on the cover body, and a one-way water passing structure is arranged at the water inlet end and used for preventing water from flowing back from the water inlet end. According to the washing machine, the outer barrel cover filtering device is installed below the outer barrel cover or the outer barrel cover is improved to be provided with the outer barrel cover filtering device so that water can be filtered, and the situation that inflow water carries impurities and enters the inner barrel is avoided; a one-way water passing structure is arranged at the water inlet end of the filtering device and can prevent water in the filtering device from flowing back from the water inlet end.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the field of washing machines, concretely relates to a washing machine outer drum cover filtering device and washing machine. BACKGROUND

[0002] The lint filter of the existing washing machine has a fixed range of collecting lint, when the water level is higher than the installation position of the lint filter, the lint floating on the water surface cannot be collected, which causes the lint floating on the water surface to adhere to the clothes after draining, and causes user's trouble, the existing lint collection scheme at the bottom of the inner drum, the lint will be accumulated on the filter screen at the bottom of the drum for a long time, a washing environment with dirt will be formed at the bottom of the inner drum, and the accumulated lint is inconvenient to clean.

[0003] A washing machine spray flow type lint filter device is disclosed in Chinese patent No. CN209907052U, which comprises a water pump, an outer drum, a return pipe, a lower outer drum cover, a lint filter, a lint filter cover, and an upper outer drum cover, the water pump is installed at the bottom of the outer drum, the two ends of the return pipe are respectively communicated with the water pump and the lower outer drum cover, the upper outer drum cover is connected with the lower outer drum cover to form an integrated body, the lower outer drum cover is detachably buckled and connected to the top of the outer drum, the lint filter is installed in the inner slot of the lower outer drum cover, and the top of the lint filter is buckled and connected with the lint filter cover. The lint filter device of the patent is provided with multiple components, and the disassembly process of the lint filter is complicated, which increases the difficulty of regular cleaning of the lint filter.

[0004] Therefore, the utility model is provided. UTILITY MODEL CONTENTS

[0005] The utility model solves the technical problem of overcoming the defects of the prior art, and provides a washing machine outer drum cover filtering device and a washing machine, a one-way water passing structure is arranged at the water inlet end of the outer drum cover filtering device, which can prevent the washing water and / or lint entering the outer drum cover filtering device from flowing back from the water inlet end.

[0006] To solve the above technical problems, the basic idea of the technical scheme of the utility model is:

[0007] The first aspect of the utility model provides a washing machine outer drum cover filtering device, which comprises a cover body, a filter part installed below the cover body, a water inlet end arranged on the cover body, and a one-way water passing structure arranged on the water inlet end to block the water from flowing back from the water inlet end.

[0008] The first aspect of the utility model provides a washing machine outer drum cover filtering device, which comprises a cover body, a filter part installed below the cover body, a water inlet end arranged on the cover body, and a one-way water passing structure arranged on the water inlet end to block the water from flowing back from the water inlet end.

[0009] Further, the water inlet end is a tubular joint, and the one-way water passing structure is a one-way valve.

[0010] The one-way valve is installed inside the tubular joint.

[0011] Further, the one-way valve is a valve plate structure rotatably connected to the inner circumferential wall of the water inlet end.

[0012] Further, one end of the filter part is rotatably connected to the cover body, and the other end is clamped to the cover body.

[0013] Further, the cover body comprises an arc-shaped top wall and two opposite side walls, and the water inlet end is arranged on the outer circumferential side wall of the top wall.

[0014] In the second aspect of the utility model, a washing machine is provided, which comprises an outer barrel and an outer barrel cover arranged on the top of the outer barrel, and the outer barrel cover is provided with the washing machine outer barrel cover filtering device.

[0015] Further, a water inlet is arranged on the outer barrel cover, and the water inlet end is communicated with the water inlet.

[0016] Further, a clamping assembly is arranged near the water inlet end, and the cover body is clamped and fixed to the outer barrel cover through the clamping assembly.

[0017] Further, a limiting assembly is arranged near the top end of the cover body, which is used for limiting the installation position of the cover body on the outer barrel cover.

[0018] In the third aspect of the utility model, a washing machine is provided, which comprises an outer barrel and an outer barrel cover arranged on the top of the outer barrel, and the outer barrel cover is provided with the washing machine outer barrel cover filtering device, and the cover body is a part of the outer barrel cover.

[0019] Compared with the prior art, the utility model has the following beneficial effects.

[0020] 1. The filter part of the washing machine outer barrel cover filtering device can be opened or detached and installed below the cover body, so that the impurities in the filter part can be conveniently cleaned, and the problems of bacterial breeding and peculiar smell caused by the difficulty in cleaning the filtering device can be effectively avoided.

[0021] 2. The water inlet end of the washing machine outer barrel cover filtering device is provided with a one-way water passing structure, which effectively avoids the phenomenon that the washing water and / or lint in the filtering device flows back from the water inlet end.

[0022] 3. The washing machine outer barrel cover filtering device has the rotatable connection and clamping mode between the filter part and the cover body, so that the opening and detachment of the filter part are more convenient, and the cleaning and maintenance can be performed without complex operation; meanwhile, the water inlet end is provided with a tubular joint, so that the connection between the water inlet end and the outer barrel cover or other connecting parts is more firm and easy to detach.

[0023] 4. The washing machine of the utility model installs the washing machine outer barrel cover filter device or the outer barrel cover self improvement with the washing machine outer barrel cover filter device below the outer barrel cover, can effectively filter the lint and other impurities in the water inlet, improve the washing effect and the clothes cleanliness, improve the overall performance and user experience of the washing machine.

[0024] The specific embodiments of the utility model will be described in further detail below with reference to the drawings. BRIEF DESCRIPTION OF DRAWINGS

[0025] The drawings are part of the utility model and serve to provide further understanding of the utility model, and the illustrative embodiments of the utility model and the description thereof serve to explain the utility model but do not constitute undue limitation on the utility model. Obviously, the drawings described below are only some embodiments, and other drawings can be obtained by those skilled in the art without creative labor. In the drawings:

[0026] Figure 1 is a three-dimensional structure schematic diagram of the washing machine of the utility model;

[0027] Figure 2 is a sectional view schematic diagram of the washing machine of the utility model from one angle;

[0028] Figure 3 is a structure schematic diagram of the washing machine outer barrel cover filter device of the utility model;

[0029] Figure 4 is a sectional view schematic diagram of the washing machine outer barrel cover filter device of the utility model;

[0030] Figure 5 is a schematic diagram of the filter device installed on the outer barrel cover in the utility model in the closed state;

[0031] Figure 6 is a sectional view schematic diagram of the filter device installed on the outer barrel cover in the utility model in the closed state;

[0032] Figure 7 is a schematic diagram of the filter device installed on the outer barrel cover in the utility model in the open state;

[0033] Figure 8 is a sectional view schematic diagram of the filter device installed on the outer barrel cover in the utility model in the open state.

[0034] In the diagram: 100, outer tub; 110, outer tub cover; 111, water pipe connector; 112, installation position; 120, water guide pipe; 200, inner tub; 300, filter device; 310, water inlet; 311, one-way valve plate; 320, cover; 330, filter section; 410, slot; 420, protrusion; 510, limiting part; 520, limiting platform.

[0035] It should be noted that these accompanying drawings and textual descriptions are not intended to limit the scope of the present invention in any way, but rather to illustrate the concept of the present invention to those skilled in the art by referring to specific embodiments. Detailed Implementation

[0036] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions in the embodiments will be clearly and completely described below with reference to the accompanying drawings. The following embodiments are used to illustrate this utility model, but are not intended to limit the scope of this utility model.

[0037] In the description of this utility model, it should be noted that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0038] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0039] like Figures 1 to 8 As shown, in a first aspect, this utility model provides a washing machine outer tub cover filter device, comprising: a cover 320; and a filter section 330 installed below the cover 320.

[0040] The water inlet end 310 is provided on the cover 320. The water inlet end 310 is provided with a one-way water passage structure to prevent water from flowing back from the water inlet end 310.

[0041] In the embodiment, the washing machine comprises an outer tub 100, an inner tub 200 arranged in the outer tub 100, and an outer tub cover 110 arranged on the top of the outer tub 100 and preferably between the outer tub 100 and the inner tub 200 in the transverse direction. The cover body 320 is a main part of the entire filter device 300 and can be a separately arranged component or a part of the outer tub cover 110 of the washing machine.

[0042] When the cover body 320 is a separately arranged component, the cover body 320 and the filter part 330 cooperate to form a detachable filter device 300. When the cover body 320 is a part of the outer tub cover 110 of the washing machine, the filter part 330 directly cooperates with the outer tub cover 110, and the filter part 330 and the cover body 320 form an openable or detachable mounting. This facilitates the user to clean or replace the filter part 330 as needed, thereby maintaining the cleanliness and filtering efficiency of the filter device 300.

[0043] The filter device 300 is provided with a water inlet end 310 arranged on the cover body 320 and used for guiding water into the filter device 300 for filtration. To prevent the water and / or lint entering the filter device 300 from flowing back at the water inlet end 310, a one-way water passing structure is arranged at the water inlet end 310 of the filter device 300. The one-way water passing structure can enable water to flow into the filter device 300 through the water inlet end 310. Under the impact of the water flow, the one-way water passing structure opens towards the water inlet direction to allow water to pass through when water is flowing into the filter device 300. When the water stops flowing or the pressure decreases, the one-way water passing structure automatically closes to prevent water from flowing back or leaking.

[0044] Further, the water inlet end 310 is a tubular joint, and the one-way water passing structure is a one-way valve. The one-way valve is installed inside the tubular joint.

[0045] Further, the one-way valve is a valve plate structure rotatably connected to the inner peripheral wall of the water inlet end 310 on one side.

[0046] In the embodiment, the washing machine is provided with a water guide pipe 120 for guiding water to the filter device 300. The water inlet end 310 is arranged as a tubular joint to facilitate connection with the water guide pipe 120 and ensure smooth water flow. The interior space of the tubular joint is provided with a one-way water passing structure, i.e., a one-way valve, to control the inlet and outlet directions of the water flow. The one-way valve is installed inside the tubular joint to allow water to flow from the water inlet end 310 into the filter device 300 of the outer tub cover 110 while preventing water in the filter device 300 from flowing back from the water inlet end 310.

[0047] The one-way valve adopts a valve plate structure, which is simple, reliable and easy to maintain. One side of the valve plate is fixed to the inner circumferential wall of the water inlet end 310 by a rotatable connection, such as a hinge connection or an elastic buckle connection, to ensure that the valve plate can be freely opened and closed under the action of water flow.

[0048] When the water enters the filter device 300 through the water inlet end 310, the one-way valve plate 311 is opened under the action of water flow, so that the water can smoothly enter the filter device 300; when the water stops flowing into the filter device 300, the one-way valve plate 311 is closed under the action of its own gravity or spring force, thereby preventing the water and / or lint in the filter device 300 from flowing back from the water inlet end 310.

[0049] Further, one end of the filter part 330 is rotatably connected to the cover body 320, and the other end is clamped to the cover body 320.

[0050] Further, the cover body 320 includes an arc-shaped top wall and two opposite side walls.

[0051] The top wall is gradually inclined downward from one end to the other end, and the water inlet end 310 is arranged at the lower end of the top wall.

[0052] In this embodiment, the filter part 330 of the filter device 300 is rotatably connected to the cover body 320, which can be a hinge, a rotating shaft or other similar mechanism, allowing the user to rotate to open or close the filter part 330 without completely disassembling the filter part 330, so as to clean the accumulated impurities inside the filter device 300 and maintain the filter device 300.

[0053] The movable end of the filter part 330 is fixed to the cover body 320 by clamping. When the filter device 300 filters lint, the filter part 330 is clamped and closed with the cover body 320 to form a filter cavity inside. The water enters the filter cavity through the water inlet end 310 for filtration, and the filtered water is discharged through the filter screen arranged on the filter part 330 into the inner drum 200 of the washing machine for washing work.

[0054] The cover 320 comprises an arc-shaped top wall and two oppositely arranged side walls, the top wall is gradually inclined downward from one end to the other end, i.e. from one end of the inner drum 200 to one end of the outer drum 100, and the water inlet end 310 is arranged at the lower end of the top wall to ensure that the water can smoothly enter the filter device 300 and be fully filtered in the filter device 300. One end of the filter part 330 is rotatably connected between the opposite two side walls of the side of the filter device 300 where the water inlet end 310 is arranged, and the other end of the filter part 330 corresponding to the top wall is clamped and fixed, thereby forming a filter cavity inside to filter the water entering the filter device 300.

[0055] The rotating connection between the cover 320 and the filter part 330 is arranged at the end of the cover 320 where the water inlet end 310 is arranged, which can ensure that the filter device 300 can be opened to a larger angle when cleaning the impurities in the filter device 300, and other parts of the outer drum cover 110 will not be touched, thereby facilitating the cleaning of the inside of the filter device 300.

[0056] The filter part 330 comprises a bracket and a filter screen covering the bracket, and the filter screen is used to filter the washing water. More preferably, the filter screen and the bracket are an integral structure. The filter screen covers the bottom of the bracket and the side of the bracket facing the inner drum 200, and a plurality of filter holes are arranged on the filter screen and uniformly cover the entire surface of the filter screen to ensure that the filter screen has the best filtering effect.

[0057] Of course, although the embodiment is described in combination with the case where the bracket and the filter screen are an integral structure, in addition to being integrally formed as a whole structure by the same material through injection molding or the like, the bracket and the filter screen can also be a split structure made of different materials and fixedly connected as a whole. When the filter screen of the filter element is a hard filter structure, the filter element can have high use strength. Even if the washing water passes through the filter screen for a long time, the filter element will not be deformed or damaged, so that the filter element has a long service life.

[0058] As another preferred embodiment, the filter screen can also be a flexible screen, such as a woven screen made of flexible wire. In this case, the filter screen can be fixedly connected to the bracket by compression, adhesion or the like. Obviously, compared with the hard filter screen of the above type, the flexible filter screen can have finer filter holes, so that the filtering effect of the filter element is better.

[0059] Specifically, the filter part 330 is in a groove shape, comprising a first filter part arranged on the lower side and a second filter part arranged towards the discharge opening of the inner tub 200, and a mounting wall for arranging the first clamping part. The first filter part is provided with a shaft with a protrusion at both ends, and the cover 320 is provided with a rotating hole at a position corresponding to the position of the shaft on the two side walls arranged oppositely, and the rotating shaft is inserted into the rotating hole to realize the rotatable connection between the filter part 330 and the cover 320. The mounting wall is arranged perpendicularly to the second filter part, and the first clamping part protrudes from the mounting wall and extends away from the mounting wall; a second clamping part is arranged at a corresponding position of the cover 320, and when the filter part 330 and the cover 320 are closed, the first clamping part and the second clamping part are clamped, and the two are connected together to form a closed filter cavity inside.

[0060] The second aspect of the utility model provides a kind of washing machine, including outer drum 100 and the outer drum cover 110 being set to the top of outer drum 100, the lower of the outer drum cover 110 is equipped with the filter device 300 of above-mentioned washing machine outer drum cover 110.

[0061] Further, the outer drum cover 110 is provided with a water inlet, and the water inlet is communicated with the water inlet end 310.

[0062] In the embodiment, the washing machine mainly comprises an outer tub 100, an inner tub 200, and a washing machine outer tub cover 110 arranged on the top of the outer tub 100. The outer tub 100 is usually used to contain washing water and the inner tub 200, and serves to protect the inner tub 200 and other components of the washing machine. The inner tub 200 is a component used for actually washing clothes in the washing machine, and is usually made of stainless steel or other corrosion-resistant materials. The inner tub 200 is provided with a plurality of small holes to allow washing water to penetrate and contact the clothes.

[0063] The washing machine outer tub cover 110 is provided with the filter device 300 of the above-mentioned washing machine outer tub cover 110. The cover 320 is an independent component, and cooperates with the filter part 330 to form the filter device 300 mounted on the outer tub cover 110.

[0064] The outer tub cover 110 is provided with a water inlet, and the water inlet is communicated with the water inlet end 310 of the filter device 300. The water inlet is provided with a water pipe joint 111, which protrudes from the outer tub cover 110 and extends obliquely upward from the outer side of the outer tub cover 110 to the inner side of the outer tub cover 110. The washing machine is provided with a water guide pipe 120 communicated with the water pipe joint 111, and the water outlet end of the water guide pipe 120 is sleeved with the water inlet end 310 of the water pipe joint 111. The water outlet end of the water pipe joint 111 is located inside the outer tub cover 110, and the water inlet end 310 of the filter device 300 is communicated with the water outlet end of the water pipe joint 111.

[0065] When the washing machine is in operation, the washing water in the washing water is extracted by the circulating pump into the water guide pipe 120, or the water delivered by the external water delivery device is introduced into the water guide pipe 120, and then guided to the water pipe joint 111 of the outer barrel cover 110 through the water guide pipe 120, and then enters the inside of the filter device 300 through the water inlet end 310 of the filter device 300. Since the one-way valve plate 311 is arranged inside the water inlet end 310, the washing water can only flow into the filter device 300 in one direction, the filter device 300 captures and retains the lint and other impurities in the washing water, and the filtered water enters the inner barrel 200 through the filter part 330 of the filter device 300, and participates in the washing work.

[0066] Further, a clamping assembly is arranged near the water inlet end 310, and the cover body 320 is clamped and fixed with the outer barrel cover 110 through the clamping assembly.

[0067] Further, a limiting assembly is arranged near the top end of the cover body 320, for limiting the installation position of the cover body 320 on the outer barrel cover 110.

[0068] In the embodiment, the installation position 112 is arranged on the outer barrel cover 110, and the filter device 300 is detachably installed at the installation position 112. The detachable installation of the filter device 300 at the installation position 112 facilitates the cleaning of the lint and impurities accumulated in the inside of the filter device 300, and also facilitates the replacement of a new filter device 300 when the filter device 300 is worn or damaged due to long-term use.

[0069] The filter device 300 and the installation position 112 are detachably connected through the clamping assembly. The arrangement of the clamping assembly not only enhances the stability and firmness of the installation of the filter device 300, but also makes the installation and disassembly process more convenient. The clamping assembly includes a clamping groove 410 and a clamping protrusion 420, and the clamping groove 410 and the clamping protrusion 420 are matched in shape and size to prevent the filter device 300 from loosening or falling off during the operation of the washing machine.

[0070] When the filter device 300 is installed on the installation position 112, the clamping protrusion 420 will naturally be embedded into the clamping groove 410, thereby realizing the fixation of the filter. The material and shape of the clamping protrusion 420 should be strong enough to withstand the vibration and impact force during the operation of the washing machine. Through the cooperation of the clamping groove 410 and the clamping protrusion 420, the filter device 300 can be firmly installed at the installation position 112 of the outer barrel cover 110 of the washing machine, and can also be conveniently disassembled for cleaning or replacement.

[0071] The clamping groove 410 is arranged at the installation position 112 of the outer tub cover 110, and the clamping convex 420 is arranged on the cover body 320.

[0072] The limiting assembly is arranged at the connection between the filter device 300 and the installation position 112, and is used for ensuring that the installation position of the cover body 320 at the installation position 112 is accurate.

[0073] The limiting assembly comprises a limiting portion 510 arranged at the installation position 112 of the outer tub cover 110 and a limiting platform 520 arranged on the cover body 320.

[0074] Through cooperation of the limiting portion 510 and the limiting platform 520, the installation position of the filter device 300 at the installation position 112 is effectively limited, and the stability of the filter device 300 is improved.

[0075] Specifically, the upper wall of the part of the water pipe joint 111 of the outer tub cover 110 inside the outer tub cover 110 is arranged to be inclined upward along the water inlet direction, that is, the upper wall of the water pipe joint 111 is inclined to extend to the inner top of the outer tub cover 110, and comprises a straight section and an arc section.

[0076] The top of the cover body 320 is provided with a stepped structure, that is, the limiting platform 520, and the side wall of the stepped structure towards the water inlet end 310 abuts against the end of the limiting portion 510, so that the filter device 300 is positioned and installed on the outer tub cover 110.

[0077] The third aspect of the utility model provides a washing machine, the washing machine comprises an outer tub 100 and an outer tub cover 110 arranged at the top of the outer tub 100, the outer tub cover 110 has the washing machine outer tub cover 110 filter device 300 described above, and the cover body 320 is a part of the outer tub cover 110.

[0078] In the embodiment, the washing machine mainly consists of an outer tub 100, an inner tub 200 and a washing machine outer tub cover 110 arranged on the top of the outer tub 100. The outer tub 100 is usually used for containing washing water and the inner tub 200 and plays a role of protecting the inner tub 200 and other components of the washing machine; the inner tub 200 is a component used for actually washing clothes in the washing machine and is usually made of stainless steel or other corrosion-resistant materials, and a plurality of small holes are arranged on the inner tub 200 so that washing water can penetrate and contact clothes. The washing machine outer tub cover 110 is provided with the above-mentioned washing machine outer tub cover 110 filtering device 300, and the cover body 320 is a part of the outer tub cover 110.

[0079] The outer tub cover 110 is arranged on the top of the outer tub 100, and the outer tub cover 110 is provided with the filtering device 300. The cover body 320 is a part of the outer tub cover 110, and the filtering part 330 is directly connected with the outer tub cover 110. At this time, the top of the filtering device 300 is a part of the outer tub cover 110, and two side walls are arranged at positions corresponding to the top wall to form a filtering cavity in cooperation with the filtering part 330. The water inlet end 310 is arranged on the outer circumferential side wall of the outer tub cover 110 at the position where the filtering part 330 is arranged, and water is guided into the filtering device 300. The water outlet of the water guide pipe 120 arranged on the washing machine is connected with the water inlet of the water inlet end 310, and water is guided into the filtering device 300 through the water guide pipe 120 and the water inlet end 310 for filtering. The water filtered by the filtering device 300 is discharged from the filter screen of the filtering part 330 and enters the inner tub 200 of the washing machine to participate in the washing work.

[0080] The filtering device 300 is arranged below the outer tub cover 110 or the outer tub cover 110 is improved to have the filtering device 300, so that the impurities carried by the water can be reduced, the cleanliness of the water can be improved, and the washing effect of the washing machine and the cleanliness of clothes can be improved.

[0081] The above only describes the preferred embodiment of the present application, and does not limit the present application in any form. Although the preferred embodiment of the present application has been described above, it is not intended to limit the present application. Any person skilled in the art can make some changes or modifications to the above-mentioned technical content without departing from the technical solution of the present application, and equivalent embodiments with equivalent changes can be obtained. The implementation solutions in the above-mentioned embodiments can be further combined or replaced. Any simple modification, equivalent change and modification of the above-mentioned embodiments according to the technical essence of the present application still belong to the scope of the present application.

Claims

1. A washing machine outer tub cover filtering device, characterized in that, The filter device comprises: a cover (320); a filter part (330) installed below the cover (320); a water inlet end (310) provided on the cover (320), the water inlet end (310) being provided with a one-way water passing structure for blocking water from flowing back from the water inlet end (310); the filter part (330) and the cover (320) are formed in a detachable or openable manner.

2. The filter device for the outer tub cover of a washing machine according to claim 1, wherein: the water inlet end (310) is a tubular joint, and the one-way water passing structure is a one-way valve; the one-way valve is installed inside the tubular joint.

3. The filter device for the outer tub cover of a washing machine according to claim 2, wherein: the one-way valve is a valve plate structure, one side of which is rotatably connected to the inner circumferential wall of the water inlet end (310).

4. The filter device for the outer tub cover of a washing machine according to claim 1, wherein: one end of the filter part (330) is rotatably connected to the cover (320), and the other end is clamped to the cover (320).

5. The filter device for the outer tub cover of a washing machine according to claim 4, wherein: the cover (320) comprises an arc-shaped top wall and two opposite side walls; the top wall is gradually inclined downward from one end to the other end, and the water inlet end (310) is arranged at the lower end of the top wall.

6. A washing machine comprising an outer tub (100) and an outer tub cover (110) provided at the top of the outer tub (100), characterized in that, The outer tub cover (110) is provided with the filter device for the outer tub cover (110) of a washing machine according to any one of claims 1-5.

7. The washing machine according to claim 6, wherein: the outer tub cover (110) is provided with a water inlet, and the water inlet end (310) is in communication with the water inlet.

8. The washing machine according to claim 7, wherein: a clamping assembly is arranged near the water inlet end (310), and the cover (320) is clamped and fixed to the outer tub cover (110) through the clamping assembly.

9. The washing machine according to claim 8, wherein: a limiting assembly is arranged near the top end of the cover (320) for limiting the installation position of the cover (320) on the outer tub cover (110).

10. A washing machine comprising an outer tub (100) and an outer tub cover (110) provided at the top of the outer tub (100), characterized in that, The outer tub cover (110) is provided with the filter device for the outer tub cover of a washing machine according to any one of claims 1-5, and the cover (320) is a part of the outer tub cover (110).

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