CN112921597A

CN112921597A - Washing machine

Info

Publication number: CN112921597A
Application number: CN201911243370.7A
Authority: CN
Inventors: 聂杰文; 付强; 张学滨; 夏超
Original assignee: Hisense Shandong Refrigerator Co Ltd
Current assignee: Hisense Shandong Refrigerator Co Ltd
Priority date: 2019-12-06
Filing date: 2019-12-06
Publication date: 2021-06-08

Abstract

The invention discloses a washing machine, relates to the technical field of washing machines, and aims to solve the technical problem that a filter is easy to block in the related technology. The embodiment of the invention provides a washing machine, which comprises a box body and a drainage pump arranged in the box body, wherein the drainage pump is provided with a filter cavity and an impeller cavity, a filter cavity inlet is formed in the cavity wall of the filter cavity, a wheel cavity inlet is formed in the cavity wall of the impeller cavity, the washing machine further comprises a filter arranged in the filter cavity, the filter comprises a filter body with a water inlet space, the water inlet space is communicated with the filter cavity inlet, a main drainage hole is further formed in the filter body, the first end of the main drainage hole is communicated with the water inlet space, the second end of the main drainage hole is communicated with the wheel cavity inlet, the filter further comprises an upright post connected with the filter body, the upright post extends into the main drainage hole from the first end of the main drainage hole, and a drainage gap is formed between the upright post. The invention can be used for filtering the drainage pump.

Description

Washing machine

Technical Field

The invention relates to the technical field of washing machines, in particular to a washing machine.

Background

With the progress of science and technology, washing machines are widely used. Some washing machines require a drain pump to drain, wherein a filter is disposed in the drain pump to prevent foreign materials from entering the impeller of the drain pump or blocking the drain pipe.

In the related art, a blocking rib is required to be arranged on a drain hole of the filter to block foreign matters, and thread scraps are easily wound on the blocking rib in the use process, so that the filter is blocked, and further, the drain pump is blocked.

Disclosure of Invention

Embodiments of the present invention provide a washing machine to solve the technical problem in the related art that a filter is easily clogged.

An embodiment of the present invention provides a washing machine, including: a box body; the draining pump is arranged in the box body and is provided with a filtering cavity and an impeller cavity, the cavity wall of the filtering cavity is provided with a filtering cavity inlet, and the cavity wall of the impeller cavity is provided with an impeller cavity inlet; set up the filter in filtering the intracavity, the filter includes: the filter body is provided with a water inlet space, the water inlet space is communicated with the inlet of the filter cavity, the filter body is also provided with a main drainage hole, the first end of the main drainage hole is communicated with the water inlet space, and the second end of the main drainage hole is communicated with the inlet of the wheel cavity; the stand that is connected with the filter body, the stand stretches into to the main drainage hole in from the first end in main drainage hole, and has the drainage space between the pore wall in stand and main drainage hole.

The washing machine provided by the embodiment of the invention comprises a filter body with a water inlet space, wherein the water inlet space is communicated with an inlet of a filter cavity, a main drainage hole is arranged on the filter body, the first end of the main drainage hole is communicated with the water inlet space, the second end of the main drainage hole is communicated with an inlet of a wheel cavity, the filter also comprises an upright post connected with the filter body, the upright post extends into the main drainage hole from the first end of the main drainage hole, and a drainage gap is arranged between the upright post and the wall of the main drainage hole, because the structure of the upright post is not easy to wind thread scraps and small foreign matters such as small buttons and the like can be smoothly discharged through the drainage gap, the speed of blocking the filter can be effectively slowed down, simultaneously, set up the net sectional area that the stand can also reduce main drainage hole relatively, prevent effectively that great foreign matter from getting into the impeller cavity through main drainage hole, and then guarantee the filter effect of filter.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

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

FIG. 2 is a schematic diagram of a drain pump and a strainer according to an embodiment of the present invention;

FIG. 3 is a cross-sectional view A-A of FIG. 2;

FIG. 4 is a further cross-sectional view A-A of FIG. 2;

FIG. 5 is a schematic structural view of a filter according to an embodiment of the present invention;

FIG. 6 is another schematic structural view of a filter according to an embodiment of the present invention;

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

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the present invention, it is to be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "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 simplicity of description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention.

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

The terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.

The washing machine in the embodiment of the present invention may be a drum washing machine, and may also be a pulsator washing machine, which is not specifically limited herein, and the drum washing machine is taken as an example to illustrate the principle of the present invention:

as shown in fig. 1, the washing machine of the present invention includes: a case 100; a drain pump 200 and a washing tub provided in the cabinet 100, the washing machine further including a drain pipe having one end communicated with the washing tub and the other end communicated with the outside, the drain pump 200 being provided on the drain pipe for draining the washing water;

as shown in fig. 2 and 3, the drain pump 200 has a filter chamber 210 and an impeller chamber 220, wherein the wall of the filter chamber 210 is provided with a filter chamber inlet 211, and the wall of the impeller chamber 220 is provided with an impeller chamber inlet 221; a filter 300 disposed within filter cavity 210, filter 300 comprising: a filter body 310 with a water inlet space 1, wherein the water inlet space 1 is communicated with the filter cavity inlet 211, the filter body 310 is further provided with a main drainage hole 2, a first end (shown as a in fig. 4) of the main drainage hole 2 is communicated with the water inlet space 1, and a second end (shown as b in fig. 4) is communicated with the wheel cavity inlet 221; the pillar 320 is connected to the filter body 310, the pillar 320 extends into the main drain hole 2 from the first end of the main drain hole 2, and a drain gap 3 is formed between the pillar 320 and the wall of the main drain hole 2.

As shown in fig. 3 and 4, the washing machine provided by the embodiment of the present invention includes a filter body 310 having a water inlet space 1, the water inlet space 1 is communicated with an inlet of the filter chamber 210, the filter body 310 is provided with a main drainage hole 2, a first end of the main drainage hole 2 is communicated with the water inlet space 1, a second end is communicated with the wheel chamber inlet 221, the filter 300 further includes a pillar 320 connected with the filter body 310, the pillar 320 extends into the main drainage hole 2 from the first end of the main drainage hole 2, and a drainage gap 3 is formed between the pillar 320 and a hole wall of the main drainage hole 2, since the pillar 320 is not easy to wind thread scraps and small foreign matters such as buttons can be smoothly discharged through the drainage gap 3, a speed of blocking the filter 300 can be effectively slowed down, and meanwhile, a net sectional area of the main drainage hole 2 can be relatively reduced by providing the pillar 320, it is effectively prevented that large foreign matters enter the impeller chamber 220 through the main drain hole 2, thereby securing the filtering effect of the filter 300.

In order to ensure the filtering effect of the filter, as shown in fig. 5, the upright post 320 coincides with the central axis of the main drainage hole 2, i.e., the upright post 320 is disposed at the central position of the main drainage hole 2. When the stand 320 is located the central point and puts, along the circumference in main drainage hole 2, the size everywhere in drainage space 3 is close, can avoid the 3 great foreign matters that lead to of certain drainage space size to pass through easily, and then guarantee that filter 300 can effectively filter the foreign matters.

The washing machine provided by the embodiment of the invention has the advantage that the shape of the main drainage hole 2 is not unique. For example, as shown in fig. 3 and 6, the main drainage hole 2 may be a tapered hole, and the small end of the main drainage hole 2 is a first end; in addition, the main drainage hole 2 may also be a cylindrical hole. Compare in cylindrical hole, when designing into main drainage hole 2 bell mouth and tip for first end, along the direction that rivers flow (by 1 flow direction impeller cavity 220 in space of intaking), the cross-sectional area grow gradually of main drainage hole 2, the area of overflowing of main drainage hole 2 grow gradually promptly, when the great foreign matter of effective filtration, can also reduce the influence to the drainage flow for the washing water can discharge fast.

In the washing machine provided by the embodiment of the invention, the shape of the upright column 320 is not unique. For example, as shown in fig. 3 and 6, the pillar 320 may be a tapered pillar, and one end (as shown by c in fig. 4) of the pillar 320 extending into the main drainage hole 2 is a small end; additionally, post 320 may also be a cylindrical post. Compare in cylindrical stand, with the conical stand of stand 320 design, along the direction that rivers flow (from intaking 1 to impeller cavity 220), the cross-sectional area of stand 320 reduces gradually, and then makes the area of overflowing of main drainage hole 2 grow gradually, when not influencing the filter effect, can also reduce the influence to drainage flow, ensures that the washing water can discharge fast.

In the washing machine according to the embodiment of the present invention, the main drain hole 2 and the inlet 221 of the wheel chamber are not unique in positional relationship. As shown in fig. 4, the filter chamber 210 is separated from the impeller chamber 220 by a partition wall 230, a wheel chamber inlet 221 is provided on the partition wall 230, and a second end of the main drain hole 2 is disposed opposite to the wheel chamber inlet 221; in addition, the second end of the main drain hole 2 and the wheel chamber inlet 221 may be offset. When the drain pump 200 operates, a negative pressure region is formed at the wheel cavity inlet 221 due to the action of the impeller, so that water in the water inlet space 1 can be sucked into the impeller cavity 220, and compared with the staggered arrangement, when the wheel cavity inlet 221 and the main drain hole 2 are arranged oppositely, the obstacles between the water inlet space 1 and the negative pressure region at the wheel cavity inlet 221 are less, so that the water in the water inlet space 1 can be sucked into the impeller cavity 220 more smoothly, and the effect of the drain pump 200 is better. Meanwhile, since the filter chamber 210 is separated from the impeller chamber 220 by the partition wall 230 and the partition wall 230 has a blocking function, the filter 300 is not pushed into the impeller chamber 220 to press the impeller under the action of the impeller and water flow during operation, thereby preventing the impeller from being damaged and prolonging the service life of the drain pump 200.

The above embodiment provides the washing machine in which the structures of the partition wall 230 and the filter body 310 are not exclusive. For example, as shown in fig. 4 and 5, a water inlet gap 4 is formed between the filter body 310 and the partition wall 230, the main water outlet 2 and the wheel cavity inlet 221 are both communicated with the water inlet gap 4, the partition wall 230 is further provided with an auxiliary inlet 231, the auxiliary inlet 231 is communicated with the water inlet gap 4, the filter body 310 is further provided with an auxiliary water outlet 2, and the auxiliary water outlet 2 is communicated between the water inlet space 1 and the water inlet gap 4; in addition, the filter body 310 and the partition wall 230 may be attached to each other, the partition wall 230 is only provided with the wheel chamber inlet 221, the filter body 310 is only provided with the main drainage hole 2, and the wheel chamber inlet 221 is communicated with the main drainage hole 2. When the water flow is great in the space of intaking 1, the negative pressure that the space of intaking 1 formed leads to the drainage effect not good easily, through setting up supplementary outlet 2 and supplementary entry 231, can communicate filter chamber 210 and impeller cavity 220, effective pressure release, and then can guarantee that the drainage is not influenced, simultaneously, compare in not setting up supplementary entry 231 and supplementary outlet 2, set up supplementary entry 231 and supplementary outlet 2 after, can also increase the area of overflowing for the drainage.

It should be noted that fig. 4 and 5 are only examples of opening the auxiliary inlet 231 on the partition wall 230 and opening the auxiliary water outlet 2 on the filter body 310 at the same time, and in some embodiments, when a gap is formed between the filter body 310 and the partition wall 230, and the main water outlet 2 and the wheel cavity inlet 221 are both communicated with the water inlet gap 4, only the auxiliary inlet 231 on the partition wall 230 or only the auxiliary water outlet 2 on the filter body 310 may be opened, so that a certain pressure relief effect can be achieved.

In addition, when the partition wall 230 is provided with the auxiliary inlet 231, as shown in fig. 4, the auxiliary inlet 231 may be disposed at the periphery of the wheel cavity inlet 221, and since the vacuum degree is highest at the center of the impeller, the auxiliary inlet 231 may be disposed at a position close to the center of the impeller so as to be located in the negative pressure region, thereby improving the drainage effect.

The above embodiment provides the washing machine in which the shapes of the auxiliary inlet 231 and the auxiliary drain opening 2 are not unique. For example, as shown in fig. 4 and 5, the auxiliary inlet 231 and the auxiliary drain opening 2 may be U-shaped; in addition, the auxiliary inlet 231 and the auxiliary drain opening 2 may be circular. Compare in circular opening, design into U-shaped opening, under the certain circumstances of area of overflowing, can be designed by the U-shaped opening more slender, the effect of separation foreign matter is better, can promote filter 300's filter effect relatively.

In the washing machine according to the above embodiment, when the auxiliary inlet 231 is provided in the partition wall 230 and the auxiliary drain opening 2 is provided in the filter body 310, the distribution of the auxiliary inlet 231 and the auxiliary drain opening 2 is not unique. For example, as shown in fig. 3, the orthographic projection of the auxiliary drain opening 2 on the partition wall 230 may be offset from the auxiliary inlet 231; in addition, the auxiliary drain opening 2 may be provided so as to overlap the auxiliary inlet 231 in an orthogonal projection onto the partition wall 230. Compared with the overlapping arrangement, the orthographic projection of the auxiliary water outlet 2 on the partition wall 230 can be staggered with the auxiliary inlet 231, so that foreign matters flowing into the water inlet gap 4 through the auxiliary water outlet 2 can be prevented from directly entering the impeller cavity 220 through the auxiliary inlet 231, the staggered arrangement mode can enable the partition wall 230 to play a certain role in blocking the foreign matters, further prevents the impeller from being damaged, and prolongs the service life of the drainage pump 200.

In order to further enhance the filtering effect of the filter, as shown in fig. 3 and 5, the washing machine according to the above embodiment further includes an auxiliary filtering member 330, the auxiliary filtering member 330 has a plurality of filtering gaps, the auxiliary filtering member 330 is located in the water inlet gap 4 and is disposed around a circumference of the main water outlet 2, and the auxiliary filtering member 330 is located between the main water outlet 2 and the auxiliary water outlet 2 along a radial direction of the main water outlet 2. Owing to set up supplementary filtration piece 330, and supplementary filtration piece 330 is located between main drainage hole 2 and the supplementary outlet 2, consequently, the foreign matter that flows into in the water clearance 4 through supplementary outlet 2 under supplementary filtration piece 330's the effect of blockking, can't directly flow to wheel chamber entry 221, can effectively prevent to get into in the impeller cavity 220 through the foreign matter of supplementary outlet 2, and then can further promote filter 300's filter effect.

The above embodiment provides the washing machine in which the structure of the auxiliary filter 330 is not exclusive. For example, as shown in fig. 5 and 6, the auxiliary filter 330 may include a plurality of blocking ribs 3301, the plurality of blocking ribs 3301 are spaced apart from each other along the circumferential direction of the main drainage hole 2, and the gap between two adjacent blocking ribs 3301 is a filtering gap, specifically, as shown in fig. 3, when the filter 300 is installed in the filter cavity 210, the plurality of blocking ribs 3301 may contact with one side of the partition wall 230 near the water inlet space 1 to form a barrier, so as to prevent the foreign matters flowing into the water inlet gap 4 through the auxiliary drainage hole 2 from directly flowing to the wheel cavity inlet 221; in addition, the auxiliary filter member 330 may be a filter plate having a plurality of filter holes. Compare in the filter, set up a plurality of fender muscle 3301, the structure is simpler, and the filter clearance is great relatively, when playing the filtering action, can also guarantee that filter 300 has better drainage effect.

It should be noted that fig. 5 is only an example when 10 ribs 3301 are provided, and the number of the ribs 3301 may be adjusted according to the size of the main drainage hole 2, which is not specifically limited herein.

In the washing machine according to the embodiment of the present invention, the filter 300 has a non-unique structure. For example, as shown in fig. 6, the filter body 310 may include a first carrier 311, a second carrier 312, and a connection part 313 for connecting the first carrier 311 and the second carrier 312, the first carrier 311 and the second carrier 312 are disposed at a distance from each other to form a water inlet space 1 between the first carrier 311 and the second carrier 312, the main drain hole 2 is disposed on the first carrier 311, and the pillar 320 is disposed on the second carrier 312; in addition, the filter body 310 may also include only the first bearing 311 and the second bearing 312, the first bearing 311 and the second bearing 312 are disposed at an interval to form the water inlet space 1 between the first bearing 311 and the second bearing 312, the main drain hole 2 is disposed on the first bearing 311, and the pillar 320 is disposed on the second bearing 312. Compared with the structure only including the first bearing 311 and the second bearing 312, when the filter body 310 further includes the connection member 313, the first bearing 311 and the second bearing 312 can be connected together by the connection member 313 to be integrated, so that the overall strength of the filter body 310 can be improved, and the filter body 300 can be conveniently placed in or taken out of the drain pump 200 by being designed into an integrated structure, thereby simplifying the operation.

The above embodiment provides the washing machine in which the first carrier 311 and the main drain hole 2 are not uniquely configured. For example, as shown in fig. 6, the first carrier 311 may include a bottom plate 3111 and a drain pipe 3112, the bottom plate 3111 is provided with a through hole 6, the drain pipe 3112 is disposed in the water inlet space 1, and one end of the drain pipe 3112 is abutted against the through hole 6, the through hole 6 and a pipe hole of the drain pipe 3112 form a main drain hole 2; in addition, the first carrier 311 may further include a bottom plate 3111, and the bottom plate 3111 is provided with a main drain hole 2. When the first carrier 311 includes the bottom plate 3111 and the drain pipe 3112, and the through hole 6 on the bottom plate 3111 and the tube hole of the drain pipe 3112 together form the main drain hole 2, along the direction in which the water flow flows, the main drain hole 2 protrudes the bottom plate 3111 to have a certain height in the water intake space 1, the foreign matter blocked in the water intake space 1 is not easily gathered on the main drain hole 2, the main drain hole 2 is not easily blocked, and then the drain pump 200 is not easily blocked, therefore, compared to only including the bottom plate 3111, the filter 300 including the bottom plate 3111 and the drain pipe 3112 at the same time, while ensuring the filtering effect, the speed at which the filter 300 is blocked can also be effectively slowed down.

In order to ensure the drainage effect, as shown in fig. 7, the connection part 313 may include two connection plates 3131, the two connection plates 3131 are spaced apart by 180 degrees along the circumferential direction of the bottom plate 3111, and the connection part 313 having such a structure connects the first bearing part 311 and the second bearing part 312 together, and at the same time, since a large gap is left between the two connection plates 3131, the washing water can smoothly flow into the water inlet space 1 from the filter chamber inlet 211, thereby ensuring that the drainage of the drainage pump 200 is not affected.

When the filter body 310 includes the connection part 313, and the connection part 313 is used to connect the bottom plate 3111 and the second carrier 312, in order to further enhance the overall strength of the filter 300, as shown in fig. 6, the first carrier 311 further includes the reinforcement part 314, the reinforcement part 314 is fixedly connected to both the drain pipe 3112 and the connection part 313, and by providing the reinforcement part 314, the drain pipe 3112 can be fixedly connected to the bottom plate 3111 and the connection part 313 to form an integral body, which can further enhance the overall strength and rigidity of the filter 300, and prevent the filter 300 from deforming under the impact of water flow and foreign matters.

The above embodiment provides the washing machine, and the structure of the reinforcing member 314 is not unique. For example, as shown in fig. 6 and 7, the reinforcing member 314 may include a blocking plate 3141 connected between an outer wall of the drain pipe 3112 and the connection member 313, a thickness direction of the blocking plate 3141 coincides with a thickness direction of the bottom plate 3111, a drain gap 9 is formed between the blocking plate 3141 and the bottom plate 3111, the drain gap 9 is communicated with the water inlet space 1, the bottom plate 3111 is provided with an auxiliary drain port 2, one end of the auxiliary drain port 2 is communicated with the impeller cavity 220 along the thickness direction of the bottom plate 3111, and the other end is communicated with the drain gap 9; the reinforcement 314 may be a rib connected to the drain pipe 3112 and the connector 313. Compared with the structure of the connecting ribs, the baffle 3141 has higher structural strength and stronger impact resistance, can effectively improve the strength and rigidity of the filter 300, and prolongs the service life of the filter 300.

It should be noted that, in some embodiments, as shown in fig. 7, an auxiliary water outlet 2 is further disposed on the bottom plate 3111, at this time, by disposing the baffle 3141, the flow of foreign matters to the auxiliary water outlet 2 can be effectively blocked, the blocking speed of the auxiliary water outlet 2 is slowed down, the auxiliary water outlet 2 can perform the functions of pressure relief and water drainage, and the water drainage effect of the water drainage pump 200 is ensured.

In order to ensure the drainage effect, as shown in fig. 7, in the washing machine provided in the above embodiment, along the radial direction of the bottom plate 3111, the size of the baffle 3141 is smaller than that of the bottom plate 3111, and a gap is left between the baffle 3141 and the inner wall of the cavity of the filter cavity 210, so that the washing water can flow out of the auxiliary drainage port 2 after passing through the gap.

In order to further enhance the strength and rigidity of the filter 300, as shown in fig. 7, the reinforcing member 314 further includes a rib 3142 disposed between the outer wall of the drain pipe 3112 and the baffle 3141, the rib 3142 is further connected to the connecting member 313, the thickness direction of the rib 3142 is perpendicular to the thickness direction of the bottom plate 3111, and by disposing the rib 3141, the strength of the reinforcing member 314 is further enhanced, the strength and rigidity of the filter 300 can be further improved, the impact resistance of the filter can be improved, and the service life of the filter 300 can be further prolonged.

In order to facilitate installation of the filter, in the washing machine according to the embodiment of the present invention, the second bearing member 312 includes an end plate 3121, and the pillar 320 is disposed on the end plate 3121, wherein, as shown in fig. 7, a groove 7 for installing a plug buckle is further formed on a side of the end plate 3121 away from the water inlet space 1, and a barb 71 for engaging with the plug buckle is disposed on an inner wall of the groove 7. Meanwhile, in order to fix the filter 300 in the filter cavity 210, a limiting piece is arranged on the cavity wall of the filter 300, as shown in fig. 3 and 6, an annular groove 8 is further formed on the outer wall of the end plate 3121, the size of the outer wall of the lower notch 81 of the annular groove 8 is smaller than that of the outer wall of the upper notch 82, and after the filter 300 is installed in the filter cavity 210, the annular groove 8 can be clamped with the limiting piece on the cavity wall of the filter 300, so that the filter 300 can be fixed in the filter cavity 210.

In the description herein, particular features, structures, materials, or characteristics may be combined in any suitable manner in any one or more embodiments or examples.

The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and the changes or substitutions should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

1. A washing machine comprising:

a box body;

the draining pump is arranged in the box body and is provided with a filtering cavity and an impeller cavity, a filtering cavity inlet is formed in the cavity wall of the filtering cavity, and a wheel cavity inlet is formed in the cavity wall of the impeller cavity;

a filter disposed within the filter chamber, wherein the filter comprises:

the filter body is provided with a water inlet space, the water inlet space is communicated with the filter cavity inlet, the filter body is also provided with a main drainage hole, the first end of the main drainage hole is communicated with the water inlet space, and the second end of the main drainage hole is communicated with the wheel cavity inlet;

the stand column is connected with the filter body, the stand column extends into the main drainage hole from the first end of the main drainage hole, and a drainage gap is formed between the stand column and the hole wall of the main drainage hole.

2. The washing machine as claimed in claim 1, wherein the main drain hole is a tapered hole, and a small end of the main drain hole is the first end.

3. The washing machine as claimed in claim 1, wherein the pillar is a tapered pillar, and an end of the pillar protruding into the main drain hole is a small end.

4. A washing machine as claimed in any one of claims 1 to 3 wherein the filter chamber is separated from the impeller chamber by a partition wall, the impeller chamber inlet being provided in the partition wall and the second end of the main drain hole being located opposite the impeller chamber inlet.

5. The washing machine as claimed in claim 4, wherein a water inlet gap is provided between the filter body and the partition wall, and the main drain hole and the wheel chamber inlet are both communicated with the water inlet gap;

the partition wall is also provided with an auxiliary inlet which is communicated with the water inlet gap, and/or

The filter body is also provided with an auxiliary water outlet which is communicated between the water inlet space and the water inlet gap.

6. A washing machine as claimed in claim 5 wherein the partition wall is further provided with an auxiliary inlet and the filter body is further provided with an auxiliary drain;

the orthographic projection of the auxiliary water outlet on the partition wall is staggered with the auxiliary inlet.

7. The washing machine as claimed in claim 5, wherein the filter further includes an auxiliary filter member having a plurality of filter gaps thereon, the auxiliary filter member being positioned in the water inlet gap and around a circumference of the main drain hole, the auxiliary filter member being positioned between the main drain hole and the auxiliary drain hole in a radial direction of the main drain hole.

8. The washing machine as claimed in claim 7, wherein the auxiliary filter member includes a plurality of blocking ribs arranged at intervals along a circumferential direction of the main drain hole, and a gap between two adjacent blocking ribs is the filtering gap.

9. A washing machine as claimed in any one of claims 1 to 3 wherein the filter body includes a first carrier, a second carrier and a connector for connecting the first carrier and the second carrier, the first carrier and the second carrier being spaced apart to form the water inlet space therebetween, the main drain hole being provided in the first carrier and the pillar being provided in the second carrier.

10. The washing machine as claimed in claim 9, wherein the first carrier includes a bottom plate having a through hole and a drain pipe disposed in the water inlet space and having one end abutting against the through hole, the through hole and the pipe hole of the drain pipe forming the main drain hole.

11. A washing machine as claimed in claim 10 wherein the connection member is for connecting the base plate and the second carrier;

the first bearing piece further comprises a reinforcing piece, and the reinforcing piece is fixedly connected with the drain pipe and the connecting piece.

12. The washing machine as claimed in claim 11, wherein the reinforcement member includes a baffle plate connected between the outer wall of the drain pipe and the connection member, a thickness direction of the baffle plate is identical to a thickness direction of the bottom plate, and a drain gap is provided between the baffle plate and the bottom plate, the drain gap being communicated with the water inlet space;

and an auxiliary water outlet is arranged on the bottom plate, one end of the auxiliary water outlet is communicated with the impeller cavity, and the other end of the auxiliary water outlet is communicated with the water drainage gap along the thickness direction of the bottom plate.