A washing machine

Abstract

The present invention belongs to the technical field of washing machines, and discloses a washing machine, including a washing tub and a filtering device, wherein the bottom wall of the washing tub is provided with a drainage portion for discharging washing water in the washing tub, and the filtering device is arranged on the drainage portion of the washing tub. When the washing machine of the present invention is draining water, the filtering device arranged at the drainage port of the bottom wall of the washing tub can effectively filter foreign matter in the washing water, thereby preventing foreign matter from entering the drainage system and affecting the normal operation of the washing machine. In addition, the filtering device is detachably connected to the washing tub, which is convenient for cleaning.

Description

Technical Field

[0001] The present invention belongs to the technical field of washing machines, and in particular, relates to a washing machine. Background Art

[0002] Some existing pulsator washing machines are equipped with a lint filter on the side wall of the inner barrel. The lint filter is mainly divided into two parts: a filter cover and a filter. The filter consists of a front cover and a rear cover. The filter cover is fixed to the inner barrel wall by screws, and the filter is installed on the filter cover by a snap-on structure to collect lint. During the washing process, the lint in the washing water is collected in the lint filter.

[0003] However, the above-mentioned lint filter is affected by the water level and water flow rate, and the filtering effect is limited. It cannot filter small items such as coins and paper clips left in the clothes by the user before washing, or buttons and other foreign objects dropped during the washing process. These foreign objects can easily enter the drain pump or drain valve of the washing machine during drainage, causing drainage system failure.

[0004] In addition, there is also a filter device installed at the water inlet end of the drain pump or drain valve in the prior art. During the drainage process, the washing water flows from the inner barrel to the outer barrel, then enters the drain pipe, and is discharged from the washing machine through the drain pipe. Although this filter device can prevent foreign matter from entering the drain pump or drain valve, foreign matter in the washing water discharged from the inner barrel will remain between the inner barrel and the outer barrel, and in the drainage pipe at the front end of the drain pump or drain valve, affecting the normal operation of the washing machine. If foreign matter needs to be cleaned, professional maintenance personnel are required to disassemble the machine for cleaning, which is a cumbersome procedure and causes great inconvenience to users.

[0005] In view of this, the present invention is proposed. Summary of the invention

[0006] The technical problem to be solved by the present invention is to overcome the shortcomings of the prior art and provide a washing machine that can solve the technical problem in the prior art that foreign matter in the washing water is discharged from the washing tub to between the inner tub and the outer tub or into the drainage system when the washing machine is draining, causing the washing machine to be unable to work normally.

[0007] In order to solve the above technical problems, the basic concept of the technical solution adopted by the present invention is:

[0008] The present invention provides a washing machine, comprising a washing tub and a filtering device, wherein the bottom wall of the washing tub is provided with a drainage portion for draining water in the washing tub, and the filtering device is arranged on the drainage portion of the washing tub.

[0009] Further, the bottom wall of the washing tub is concave downward along the circumferential direction to form an annular groove, the drainage portion is a drainage port arranged on the annular groove, and the filtering device is arranged on the annular groove;

[0010] Preferably, a plurality of drain ports are provided, and the plurality of drain ports are spaced apart along the circumference of the annular groove.

[0011] Further, the filtering device comprises a filter element and a fixing element for mounting the filter element, the fixing element is arranged on the annular groove, the filter element is arranged on the mounting opening of the fixing element and corresponds to the drain port, and a filtering hole is arranged on the filter element;

[0012] Preferably, the fixing member comprises an annular mounting plate matching the annular groove, the annular mounting plate is provided with the mounting opening, and the filter member comprises a filter screen provided on the mounting opening;

[0013] Preferably, the filter screens are arranged at intervals along the circumference of the annular mounting plate and correspond to the drain ports;

[0014] Preferably, a support platform for supporting the annular mounting plate is provided in the annular groove, and the height of the support platform is lower than the height of the annular groove.

[0015] Furthermore, the filtering device is detachably arranged on the drainage portion of the bottom wall of the washing tub through a connecting structure;

[0016] The connection structure comprises a clamping portion arranged below the annular mounting plate and a matching portion arranged in the annular groove and matching with the clamping portion. The clamping portion is engaged with / disengaged from the matching portion by rotating the annular mounting plate.

[0017] Furthermore, a limiting structure is arranged between the filter device and the annular groove, and the limiting structure includes a limiting protrusion arranged on the annular mounting plate and a limiting recess arranged on the groove wall of the annular groove and matching the limiting protrusion.

[0018] Furthermore, it includes a pulsator disposed in the washing tub, the pulsator is located above the drainage portion, and the filtering device is located between the drainage portion and the pulsator.

[0019] Further, the pulsator is detachably connected to the motor shaft inside the washing tub through the locking device; a first slot is provided on the motor shaft, the locking device comprises a locking member and a driving member, the locking member has a locking position engaged with the first slot and an unlocking position separated from the first slot, and the driving member can drive the locking member to be in the unlocking position / the locking position;

[0020] The impeller comprises an impeller body, a pressing cover which can move up and down is arranged in the middle of the impeller body, and the pressing cover is located above the driving member; by pressing / relaxing the pressing cover, the driving member can reciprocate on the locking member;

[0021] Preferably, the impeller body has a limiting groove for limiting the movement of the pressing cover in the limiting groove.

[0022] Further, the locking member comprises a limiting sleeve sleeved on the motor shaft, the top cover of the limiting sleeve is provided with the pressing cover, the bottom end of the limiting sleeve is provided on the impeller body, the cylinder wall of the limiting sleeve is provided with a second card slot matching with the first card slot, and a movable steel ball is provided in the second card slot;

[0023] When the locking member is in the locking position, the steel ball is located in the first slot and the second slot at the same time; when the locking member is in the unlocking position, the steel ball is separated from the first slot and located in the second slot;

[0024] Preferably, a clamp is sleeved on the limiting sleeve, and the clamp is located at the position of the second clamping groove to limit the steel ball from escaping from the second clamping groove.

[0025] Furthermore, the driving member includes a movable sleeve and an elastic member sleeved on the limiting sleeve, the movable sleeve has an extruded tube section, and the elastic member is located below the extruded tube section;

[0026] When the locking member is in the locking position, the elastic member is in a natural state, and the inner wall of the extruded tube section abuts against the steel ball; when the locking member is in the unlocking position, the elastic member is in a compressed state, and the extruded tube section is away from the steel ball;

[0027] Preferably, a stopper is provided at the bottom of the limiting sleeve to limit the elastic member from separating from the limiting sleeve.

[0028] Furthermore, the height of the movable sleeve is smaller than the height of the limiting sleeve, the movable sleeve further comprises a protective tube section arranged below the extrusion tube section, and the elastic member is located between the outer wall of the limiting sleeve and the protective tube section.

[0029] After adopting the above technical solution, the present invention has the following beneficial effects compared with the prior art:

[0030] 1. When the washing machine of the present invention is draining water, the filtering device arranged at the drain outlet on the bottom wall of the washing tub can effectively filter foreign matter in the washing water, thereby preventing the foreign matter from entering the drainage system and being difficult to clean, thereby affecting the normal operation of the washing machine.

[0031] 2. The filter device of the washing machine of the present invention is detachably connected to the washing tub, and the user can easily disassemble it and clean it by himself, thus avoiding the adverse consequences caused by the accumulation and mildew of thread scraps.

[0032] 3. The filter device of the washing machine of the present invention is arranged below the impeller, which effectively prevents the filter device from causing wear to the laundry, and the impeller is detachably connected to the motor shaft, which not only facilitates the cleaning or disassembly of the filter device, but also facilitates the cleaning of the impeller itself.

[0033] The specific implementation modes of the present invention are further described in detail below in conjunction with the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] The accompanying drawings are part of the present invention and are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention, but do not constitute an improper limitation of the present invention. Obviously, the accompanying drawings described below are only some embodiments. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without creative work.

[0035] In the attached picture:

[0036] Figure 1 It is a schematic structural diagram of a washing machine of the present invention;

[0037] Figure 2 It is a schematic diagram of the structure of the filtering device of the present invention;

[0038] Figure 3 It is a structural schematic diagram of the drainage part of the present invention;

[0039] Figure 4 It is a structural schematic diagram of a washing machine pulsator of the present invention;

[0040] Figure 5 The present invention is a structure for installing the impeller and the motor shaft. Figure 1 ;

[0041] Figure 6 The present invention Figure 5 A partial enlarged view of the middle A;

[0042] Figure 7 The present invention is a structure for installing the impeller and the motor shaft. Figure 2 ;

[0043] Figure 8 The present invention Figure 7 A partial enlarged view of point B in the middle;

[0044] Fig. 9 It is a structural schematic diagram of the locking device of the present invention;

[0045] Fig.10is a cross-sectional view of the locking device of the present invention Figure 1 ;

[0046] Fig.11 is a cross-sectional view of the locking device of the present invention Figure 2 .

[0047] In the figure:

[0048] 1. washing tub; 11. drainage portion; 12. annular groove; 121. clamping column; 122. limiting depression; 123. supporting platform;

[0049] 2. Filter device; 21. Ring-shaped mounting plate; 211. Hook; 212. Position limiting protrusion; 22. Mounting port; 23. Filter screen;

[0050] 3. Impeller; 31. Impeller body; 311. Limiting groove; 312. Hand-held part; 32. Press cover;

[0051] 4. Locking device; 41. Limiting sleeve; 411. Stopper; 412. Second slot; 42. Steel ball; 43. Clamp; 44. Moving sleeve; 441. Extrusion pipe section; 442. Protection pipe section; 45. Elastic member;

[0052] 5. Motor shaft; 51. First slot.

[0053] It should be noted that these drawings and textual descriptions are not intended to limit the conceptual scope of the present invention in any way, but are intended to illustrate the concept of the present invention for those skilled in the art by referring to specific embodiments. DETAILED DESCRIPTION

[0054] In order to make the purpose, 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 in conjunction with the drawings in the embodiments of the present invention. The following embodiments are used to illustrate the present invention but are not used to limit the scope of the present invention.

[0055] In the description of the present invention, it should be noted that the directions or positional relationships indicated by the terms "upper", "lower", "front", "back", "inside", "outside", etc. are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention.

[0056] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection, or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0057] like Figure 1-3 As shown, the present invention discloses a washing machine, comprising a washing tub 1 and a filtering device 2 , wherein the bottom wall of the washing tub 1 is provided with a drainage portion 11 for draining water in the washing tub 1 , and the filtering device 2 is arranged on the drainage portion 11 of the washing tub 1 .

[0058] The present invention provides a filter device 2 at the drainage portion 11 of the inner bottom wall of the washing tub 1. When the washing machine drains, the washing water flows through the filter device 2. The filter device 2 can effectively filter out foreign matter in the washing water to prevent the foreign matter from entering the drainage system of the washing machine and affecting the normal operation of the washing machine.

[0059] Furthermore, the bottom wall of the washing tub 1 is recessed downward along the circumferential direction to form an annular groove 12 , the drainage portion 11 includes a drainage port arranged on the annular groove 12 , and the filtering device 2 is arranged on the annular groove 12 .

[0060] The bottom wall of the washing tub 1 is annular and is concave downward along the circumference to form an annular groove 12. The bottom of the annular groove 12 is provided with a plurality of drain ports to drain the washing water out of the washing machine when the washing machine is draining.

[0061] The filter device 2 is arranged on the annular groove 12, so that the filter device 2 can be located above the drain outlet to cover the drain outlet, so that when draining, the washing water is filtered by the filter device 2, and foreign matter in the washing water is directly collected in the washing tub 1, thereby preventing foreign matter from entering the drainage system of the washing machine and affecting the normal operation of the washing machine.

[0062] Furthermore, there may be multiple drainage openings provided on the annular groove 12, without any specific limitation herein, and the multiple drainage openings are arranged at intervals along the circumference of the annular groove 12 to ensure drainage effect.

[0063] The drain port may be disposed on the bottom wall of the annular groove 12 as long as the washing machine can be guaranteed to drain water normally.

[0064] Furthermore, the filter device 2 includes a filter element and a fixing element for installing the filter element, the fixing element is arranged on the annular groove 12, and the filter element is arranged on the installation opening 22 of the fixing element and corresponds to the drain port.

[0065] Specifically, the fixing member includes an annular mounting plate 21 matching the annular groove 12 , the annular mounting plate 21 is provided with the mounting opening 22 , and the filter element includes a filter screen 23 provided on the mounting opening 22 .

[0066] In the above technical solution of the present invention, the fixing member is an annular mounting plate 21, and a mounting opening 22 is provided on the annular mounting plate 21. There can be multiple mounting openings 22, and multiple mounting openings 22 are arranged at intervals along the circumference of the annular mounting plate 21 so that the filter screen 23 corresponds to the drain port.

[0067] During the drainage process of the washing machine, the washing water flows through the filter 23, foreign matter in the washing water will remain on the filter 23, and the filtered washing water will flow into the drain pipe of the washing machine and then be discharged from the washing machine. In addition, the filter 23 and the annular mounting plate 21 can be integrally injection molded, which is convenient for processing and production.

[0068] The annular groove 12 is provided with a support platform 123 for supporting the annular mounting plate 21. The support platforms 123 are arranged at intervals along the circumference of the annular groove 12, and the drain port is located between two adjacent support platforms 123. Preferably, the height of the support platform 123 is lower than the height of the annular groove 12.

[0069] In the above technical solution of the present invention, the support platform 123 is a protrusion arranged in the annular groove 12, and the height of the support platform 123 is lower than the height of the annular groove 12. When the annular mounting plate 21 is arranged in the annular groove 12, the upper surface of the annular mounting plate 21 is flush with the notch position of the annular groove 12, or slightly lower than the notch position of the annular groove 12, so that it is convenient to collect washing water at the filter device 2, so that foreign matter remains on the filter net 23.

[0070] In order to facilitate the cleaning of the filter device 2 , the filter device 2 is detachably arranged on the annular groove 12 on the bottom wall of the washing tub 1 through a connecting structure.

[0071] In this way, the user can easily disassemble the filter device 2 for cleaning. The filter device 2 can not only filter the washing water, so that foreign matter in the washing water is directly collected in the washing tub 1, and prevent the foreign matter in the washing water from entering the drainage system and destroying its normal function, but also can be cleaned by itself as needed, avoiding the adverse consequences caused by the accumulation of lint and mildew, and the operation is convenient.

[0072] The connection structure includes a clamping portion disposed below the annular mounting plate 21 and a matching portion disposed in the annular groove 12 and matching with the clamping portion. The clamping portion is engaged with / disengaged from the matching portion by rotating the annular mounting plate 21 .

[0073] More specifically, the clamping portion is a hook 211 arranged below the annular mounting plate 21, and the matching portion is a clamping column 121 arranged on the groove wall of the annular groove 12. The clamping column 121 is at a certain distance from the groove bottom of the annular groove 12. When the annular mounting plate 21 is placed in the annular groove 12, the annular mounting plate 21 is rotated, and the hook 211 is driven to rotate at the same time, so that the hook 211 is clamped on the clamping column 121.

[0074] In addition, a limiting structure is also arranged between the filter device 2 and the annular groove 12, and the limiting structure includes a limiting protrusion 212 arranged on the annular mounting plate 21 and a limiting recess 122 arranged on the groove wall of the annular groove 12 and matching the limiting protrusion 212. Through the cooperation between the limiting protrusion 212 and the limiting recess 122, the hook 211 can be prevented from being separated from the clamping column 121 during the rotation of the annular mounting plate 21, and the filter device 2 can be prevented from being separated from the washing bucket 1.

[0075] During the drainage stage of the washing machine, the washing water in the washing tub 1 can be filtered through the filter device 2 and then discharged from the washing machine drain pipe. The filtered washing water will not block the drainage system and affect normal use.

[0076] like Figure 4-11 As shown, the washing machine also includes a pulsator 3 and a motor shaft 5 connected to the pulsator 3. The pulsator 3 is connected to the bottom of the washing tub 1. The motor shaft 5 is used to drive the pulsator 3 to rotate, so that the laundry in the washing tub 1 can be turned over and washed.

[0077] The impeller 3 is arranged on the drainage part 11, and the filter device 2 is located below the impeller 3, that is, the filter device 2 is arranged between the drainage port on the bottom wall of the washing tub 1 and the impeller 3, so that the filter device 2 will not contact the laundry, thereby not causing wear to the laundry and avoiding the generation of lint.

[0078] Furthermore, the impeller 3 is detachably connected to the motor shaft 5 located inside the washing tub 1 through the locking device 4 .

[0079] Since the filter device 2 is detachably arranged on the annular groove 12 and is located below the impeller 3 in the washing tub 1, in order to smoothly remove the removed filter device 2 from the washing tub 1, the impeller 3 is detachably connected to the motor shaft 5 located in the washing tub 1. After the impeller 3 is removed from the motor shaft 5, the filter device 2 can be taken out of the washing tub 1 for cleaning.

[0080] like Figure 5-11As shown, the locking device 4 is located inside the impeller 3 , and the locking device 4 is sleeved on the motor shaft 5 in the washing tub 1 so as to detachably set the impeller 3 on the motor shaft 5 .

[0081] Specifically, a first slot 51 is provided on the motor shaft 5, and the locking device 4 includes a locking member and a driving member, the locking member has a locking position engaged with the first slot 51 and an unlocking position separated from the first slot 51, and the driving member can drive the locking member to be in the unlocking position / the locking position.

[0082] In the above technical solution of the present invention, the locking member, under the drive of the driving member, can have a locking position in which it is engaged with the first locking slot 51 , and an unlocking position in which it is separated from the first locking slot 51 .

[0083] like Figure 5-6 As shown, when the locking piece is in the locking position, it can be stuck in the first slot 51 to prevent the locking device 4 from moving up and down along the axial direction of the motor shaft 5, thereby fixing the impeller 3 on the motor shaft 5.

[0084] like Figure 7-8 As shown, when the locking member is driven by the driving member to be in the unlocking position, the locking member is separated from the first slot 51, so that the locking device 4 can be taken out by axial movement of the motor shaft 5, thereby facilitating the disassembly of the filter device 2.

[0085] The impeller 3 comprises an impeller body, a pressing cover 32 movable up and down is arranged in the middle of the impeller body, and the pressing cover 32 is located above the driving member. Preferably, the impeller body has a limiting groove 311 to limit the pressing cover 32 from moving in the limiting groove 311.

[0086] Pressing the pressing cover 32 drives the driving member to move, driving the locking member to the unlocking position, at which time the locking member is separated from the first slot 51, so that the impeller 3 can be taken out from the axial movement of the motor shaft 5.

[0087] When the force applied to the pressing cover 32 is released, the driving member drives the locking member to be in the locking position, thereby fixing the impeller 3 on the motor shaft 5 and allowing it to rotate with the rotation of the motor shaft 5 .

[0088] Furthermore, the locking member includes a limiting sleeve 41 sleeved on the motor shaft 5, the top cover of the limiting sleeve 41 is provided with the pressing cover 32, the bottom end of the limiting sleeve 41 abuts against the main body of the impeller 3, and the wall of the limiting sleeve 41 is provided with a second slot 412 that matches the first slot 51, and a movable steel ball 42 is provided in the second slot 412.

[0089] The first slot 51 is a groove provided on the motor shaft 5, and the second slot 412 is a through hole provided on the limiting sleeve 41. The first slot 51 corresponds to the second slot 412. A part of the steel ball 42 is confined in the through hole.

[0090] When the locking member is in the locking position, that is, when the impeller 3 is fixed on the motor shaft 5 , the steel ball 42 is located in the first slot 51 and the second slot 412 at the same time.

[0091] When the locking member is in the unlocking position, that is, the locking member is separated from the first slot 51 , the impeller 3 can be removed from the motor shaft 5 , and at this time, the steel ball 42 is separated from the first slot 51 and is located in the second slot 412 .

[0092] Preferably, a clamp 43 is sleeved on the limiting sleeve 41 , and the clamp 43 is located at the position of the second clamping groove 412 to limit the steel ball 42 from escaping from the second clamping groove 412 .

[0093] Furthermore, the driving member includes a movable sleeve 44 and an elastic member 45 which are sleeved on the limiting sleeve 41 , the movable sleeve 44 has an extruded tube section 441 , and the elastic member 45 is located below the extruded tube section 441 . Preferably, the elastic member 45 is a spring.

[0094] Preferably, a stop portion 411 is provided at the bottom of the limiting sleeve 41 to limit the elastic member 45 from detaching from the limiting sleeve 41 , that is, the upper portion of the elastic member 45 abuts against the lower portion of the extrusion tube section 441 , and the lower portion of the elastic member 45 abuts against the stop portion 411 .

[0095] like Fig.10 As shown, when the locking member is in the locking position, the elastic member 45 is in a natural state, and the inner wall of the extruded tube section 441 abuts against the steel ball 42 .

[0096] like Fig.11 As shown, when the locking member is in the unlocking position, the elastic member 45 is in a compressed state, and the extrusion tube section 441 is away from the steel ball 42 .

[0097] Furthermore, the height of the movable sleeve 44 is smaller than that of the limiting sleeve 41 , and the movable sleeve 44 further includes a protective tube section 442 disposed below the extrusion tube section 441 , and the elastic member 45 is located between the outer wall of the limiting sleeve 41 and the protective tube section 442 .

[0098] In addition, in order to facilitate the disassembly and installation of the impeller 3 , a hand-holding portion 312 is further provided on the impeller body 31 , and the hand-holding portion 312 here is a depression provided on the impeller body 31 .

[0099] The following specifically describes the installation and disassembly process of the impeller 3 and the motor shaft 5 in the present invention:

[0100] During installation, align the limiting sleeve 41 with the motor shaft 5 and move downward until a part of the limiting sleeve 41 is sleeved on the motor shaft 5, press the pressing cover 32, the movable sleeve 44 moves downward, the elastic member 45 is compressed, so that the steel ball 42 is located in the second slot 412, and when the first slot 51 is aligned with the second slot 412, release the pressing cover 32, move the movable sleeve 44 upward, the elastic member 45 extends, and the movable sleeve 44 presses the steel ball 42, so that the steel ball 42 is located in the first slot 51 and the second slot 412 at the same time, so that the impeller 3 is installed on the motor shaft 5.

[0101] During disassembly, the pressing cover 32 is pressed, the movable sleeve 44 moves downward, the elastic member 45 is compressed, so that the steel ball 42 is located in the second slot 412 , and the impeller 3 is pulled upward to separate the impeller 3 from the motor shaft 5 .

[0102] In the above technical solution of the present invention, the disassembly and installation of the impeller 3 do not require the aid of external tools (such as a screwdriver, etc.), and the impeller 3 can be removed by only pressing and lifting the impeller 3, so the removal of the impeller 3 is more convenient and time-saving, which is not only conducive to the cleaning of the filter device 2, but also convenient for the cleaning of the impeller 3 itself.

[0103] The above description is only a preferred embodiment of the present invention, and does not limit the present invention in any form. Although the present invention has been disclosed as a preferred embodiment as above, it is not used to limit the present invention. Any technician familiar with this patent can make some changes or modifications to equivalent embodiments of equivalent changes by using the technical content suggested above without departing from the scope of the technical solution of the present invention. The implementation scheme in the above embodiment can also be further combined or replaced. However, any simple modification, equivalent change and modification made to the above embodiment based on the technical essence of the present invention without departing from the content of the technical solution of the present invention still falls within the scope of the solution of the present invention.

Claims

1. A washing machine, characterized in that: It includes a washing bucket and a filtering device, wherein the bottom wall of the washing bucket A drainage portion is provided for draining water in the washing tub, and the filtering device is provided on the drainage portion of the washing tub; The bottom wall of the washing tub is concave downward along the circumferential direction to form an annular groove, the drainage portion is a drainage port arranged on the annular groove, and the filtering device is arranged on the annular groove; The filter device comprises a filter element and a fixing element for mounting the filter element, the fixing element is arranged on the annular groove, the filter element is arranged on the mounting opening of the fixing element and corresponds to the drain port, and a filter hole is arranged on the filter element; The fixing member comprises an annular mounting plate matching the annular groove, the annular mounting plate is provided with the mounting opening, and the filter member comprises a filter screen provided on the mounting opening; A support platform for supporting the annular mounting plate is provided in the annular groove, and the height of the support platform is lower than the height of the annular groove; The filtering device is detachably arranged on the drainage portion of the bottom wall of the washing tub through a connecting structure; The connection structure comprises a clamping portion arranged below the annular mounting plate and a matching portion arranged in the annular groove and matching with the clamping portion, and the annular mounting plate is rotated so that the clamping portion is connected to / disconnected from the matching portion; When the annular mounting plate is disposed in the annular groove, the upper surface of the annular mounting plate is flush with the notch position of the annular groove, or is lower than the notch position of the annular groove.

2. The washing machine according to claim 1, characterized in that: A plurality of drain ports are provided, and the plurality of drain ports are spaced apart along the circumference of the annular groove.

3. The washing machine according to claim 2, characterized in that: The filter screens are arranged at intervals along the circumference of the annular mounting plate and correspond to the drain ports.

4. The washing machine according to claim 3, characterized in that: A limiting structure is arranged between the filtering device and the annular groove, and the limiting structure comprises a limiting protrusion arranged on the annular mounting plate and a limiting recess arranged on the groove wall of the annular groove and matching with the limiting protrusion.

5. The washing machine according to any one of claims 1 to 4, characterized in that: The invention comprises a pulsator arranged in the washing tub, wherein the pulsator is located above the drainage part, and the filtering device is located between the drainage part and the pulsator.

6. The washing machine according to claim 5, characterized in that: The pulsator is detachably connected to the motor shaft inside the washing tub through a locking device; a first slot is provided on the motor shaft, the locking device comprises a locking member and a driving member, the locking member has a locking position engaged with the first slot and an unlocking position separated from the first slot, and the driving member can drive the locking member to be in the unlocking position / the locking position; The impeller comprises an impeller body, a pressing cover which can move up and down is arranged in the middle of the impeller body, and the pressing cover is located above the driving member; by pressing / relaxing the pressing cover, the driving member can reciprocate on the locking member.

7. The washing machine according to claim 6, characterized in that: The impeller body has a limiting groove for limiting the movement of the pressing cover in the limiting groove.

8. The washing machine according to claim 6, characterized in that: The locking member comprises a limiting sleeve sleeved on the motor shaft, the top cover of the limiting sleeve is provided with the pressing cover, the bottom end of the limiting sleeve is provided on the impeller body, the cylinder wall of the limiting sleeve is provided with a second card slot matching with the first card slot, and a movable steel ball is provided in the second card slot; When the locking member is in the locking position, the steel ball is located in the first slot and the second slot at the same time; when the locking member is in the unlocking position, the steel ball is separated from the first slot and is located in the second slot.

9. The washing machine according to claim 8, characterized in that: A clamp is sleeved on the limiting sleeve, and the clamp is located at the position of the second clamping groove to limit the steel ball from escaping from the second clamping groove.

10. The washing machine according to claim 8, characterized in that: The driving member comprises a movable sleeve and an elastic member sleeved on the limiting sleeve, the movable sleeve has an extruded tube section, and the elastic member is located below the extruded tube section; When the locking member is in the locking position, the elastic member is in a natural state, and the inner wall of the extruded tube section abuts against the steel ball; when the locking member is in the unlocking position, the elastic member is in a compressed state, and the extruded tube section is away from the steel ball.

11. The washing machine according to claim 10, characterized in that: A stopper is provided at the bottom of the limiting sleeve to limit the elastic member from being separated from the limiting sleeve.

12. The washing machine according to claim 10, characterized in that: The height of the movable sleeve is smaller than that of the limiting sleeve. The movable sleeve further comprises a protective tube section arranged below the extrusion tube section. The elastic member is located between the outer wall of the limiting sleeve and the protective tube section.

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