A washing machine

Abstract

The present invention belongs to the technical field of washing machines and discloses a washing machine comprising: a water drum; a filter device connected to the water drum, receiving water in the water drum for filtration, and having a drain outlet for discharging sewage; a suction device that performs a suction action to drive the sewage in the filter device to be discharged through the drain outlet under the action of a pressure difference; a recovery device for collecting sewage discharged by the filter device; a sealing member that is unidirectionally conductive from outside to inside is provided at the sewage inlet of the recovery device; or the recovery device has a water outlet, and a sealing member that is unidirectionally conductive from inside to outside is provided at the water outlet. In the present invention, the provision of the sealing member can disconnect the space between the drain outlet and the recovery device from the external atmosphere when the suction device performs a suction action, thereby quickly forming a negative pressure environment outside the drain outlet under the action of the suction device, thereby promoting the sewage in the filter device to be fully discharged into the recovery device.

Description

Technical Field

[0001] This invention belongs to the field of washing machine technology, and more specifically, relates to a washing machine. Background Technology

[0002] During the washing process, friction between clothes and between clothes and the washing machine itself causes lint to shed and mix into the wash water. If this lint isn't removed, it may adhere to the clothes after washing, affecting the cleaning effect. Therefore, existing washing machines are equipped with lint filters that circulate the wash water through the filter during the washing process to remove the lint.

[0003] The filters in most washing machines are located inside the inner drum or drain pump to remove lint and debris from the wash water. However, after prolonged use, the filters become clogged with lint and other impurities, affecting their filtration efficiency, clogging the drain valve / pump, and easily breeding bacteria. Timely cleaning is essential to prevent contamination of the wash water, causing secondary pollution to clothes and impacting user health. However, most washing machines require users to remove the filter for manual cleaning, which is inconvenient.

[0004] To address the aforementioned issues, existing technologies have proposed filter devices with self-cleaning functions, which can autonomously discharge attached filter impurities. However, most washing machines using these filter devices discharge wastewater carrying filter impurities directly into the washing machine's drain after the filter has completed its self-cleaning process, which leads to the following problems.

[0005] On the one hand, due to the compact internal space of the washing machine, the drainage path for wastewater to be discharged from the filter is relatively long and may have a certain height difference. This makes it difficult for wastewater to be fully discharged from the filter without the aid of driving force, resulting in incomplete self-cleaning of the filter. After long-term use of the washing machine, hygiene problems caused by the accumulation of filtered impurities inside the filter cannot be avoided.

[0006] On the other hand, in recent years, the concept of microplastics has been proposed in the field of environmental protection and has gradually received increasing attention. Microplastics generally refer to plastic fragments and particles with a diameter of less than 5 millimeters. When mixed into the natural aquatic environment, they easily adsorb organic pollutants in the water due to their high specific surface area, forming organic pollution spheres. Microplastics floating in the water are easily ingested by low-level food chain organisms such as mussels and zooplankton. Since microplastics cannot be digested, they continue to accumulate in the bodies of upper-level organisms after these organisms are preyed upon. As apex predators in the food chain, humans' food sources include these organisms that accumulate microplastics in their bodies, which in turn leads to the accumulation of microplastics in the human body and may have an impact on human health.

[0007] Studies have found that a significant source of microplastics is wastewater discharged from household washing machines. This is because washing machines wash away clothing fibers, and with the widespread use of synthetic fabrics, these detached fibers are discharged with the washing machine's wastewater, becoming microplastics mixed into the natural aquatic environment. Microplastics can also originate from industrial products made of plastic. The outer drum, drain pipe, and other structures in washing machines are generally made of plastic, and over time, plastic fragments inevitably detach due to aging and other factors. Therefore, reducing the microplastic content in washing machine wastewater has become a pressing environmental issue. Current washing machines with self-cleaning filters suffer from excessively high microplastic content in their wastewater because filtered impurities containing microplastics are directly discharged into the machine's wastewater.

[0008] In view of this, the present invention is proposed. Summary of the Invention

[0009] The technical problem to be solved by the present invention is to overcome the shortcomings of the prior art and provide a washing machine with a filtration device. The washing machine is equipped with a recycling device to collect the sewage discharged from the filtration device. It is also equipped with a suction device and a one-way sealing component installed on the recycling device to cooperate with the suction device. When the suction device performs the suction action, it can quickly form a pressure difference inside and outside the sewage outlet of the filtration device, which provides driving force for the discharge of sewage in the filtration device and ensures that the sewage is discharged smoothly and fully from the filtration device.

[0010] To solve the above-mentioned technical problems, the basic concept of the technical solution adopted by the present invention is as follows:

[0011] A washing machine, comprising:

[0012] water container;

[0013] A filtration device, connected to a water tank, receives water from the water tank for filtration, and has a drain outlet for discharging wastewater.

[0014] Also includes:

[0015] The suction device performs a suction action, driving the sewage in the filter device to be discharged through the drain outlet under the action of pressure difference;

[0016] A recycling device is used to collect wastewater discharged from the filtration device;

[0017] The wastewater inlet of the recycling device is equipped with a unidirectional sealing element that allows flow from the outside to the inside; or, the recycling device has an outlet, at which a unidirectional sealing element that allows flow from the inside to the outside is provided.

[0018] Furthermore, the sealing element is installed at the wastewater inlet of the recycling device and has unidirectional flow from the outside to the inside; the sealing element includes:

[0019] The substrate is installed at the wastewater inlet of the recycling device;

[0020] The opening section is movable relative to the base body, allowing the connection / disconnection of the external and internal spaces of the recycling device.

[0021] Furthermore, the outer periphery of the sewage inlet extends a certain length from the inner wall of the recycling device into the recycling device to form a tubular section; the base is installed at the extended end of the tubular section, and the opening part is movable relative to the extended end of the tubular section to open / seal the opening at the extended end of the tubular section.

[0022] Furthermore, the substrate is fitted onto the extended end of the tubular portion; the opening portion covers the opening of the tubular portion from the outside of the tubular portion to achieve sealing, and the opening portion flips away from the tubular portion to open the opening.

[0023] Furthermore, the opening part is made of a flexible material. When the suction device is turned on, the portion of the opening part covering the opening deforms and protrudes into the tubular part, thereby sealing the opening.

[0024] Furthermore, the opening portion is made of a rigid material, and the surface of the opening portion facing the opening is a convex surface that protrudes into the tubular portion.

[0025] Furthermore, the outer periphery of the sewage inlet extends a certain length from the outer wall of the recycling device to the outside of the recycling device to form a connecting part, which is connected to a pipeline, and the pipeline is connected to the sewage outlet of the filtration device.

[0026] Furthermore, the opening portion is integrally formed with the base; or, the opening portion and the base are separately provided and connected in a way that allows them to move relative to each other.

[0027] Furthermore, the drain outlet of the filtration device is connected to a wastewater storage device with an internal cavity, and the wastewater storage device is connected to a recycling device; the suction device is connected to the internal cavity of the wastewater storage device and suctions air from inside the wastewater storage device.

[0028] Furthermore, a buffer section is provided between the suction device and the sewage storage device. The buffer section has a buffer chamber inside, which is connected to the internal cavity of the sewage storage device and the suction device.

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

[0030] In this invention, a recycling device is installed in the washing machine to collect wastewater discharged from the filter, preventing filter impurities such as lint carried in the wastewater from being directly discharged from the washing machine. This avoids the adverse effects caused by microplastics in the filter impurities entering the ecological cycle with the drainage water. The recycling device is equipped with a unidirectional sealing component that works in conjunction with a suction device. When the suction device performs its suction action, it can quickly create a strong pressure difference inside and outside the drain port of the filter, providing driving force for the discharge of wastewater from the filter. This prevents situations where the distance between the filter and the recycling device is too far or there is a height difference, which could prevent wastewater from being discharged.

[0031] In this invention, the sealing component includes a base fitted onto a tubular portion and an opening portion for sealing the opening of the tubular portion, resulting in a simple structure. Using a deformable flexible material for the opening portion, or using a rigid material with a convex surface for sealing the tubular portion opening, increases the contact area between the opening portion and the tubular portion opening, as well as the force-bearing area of ​​the opening portion when the suction device draws air. This leads to a better sealing effect on the wastewater inlet of the recycling device and facilitates the formation of a negative pressure environment.

[0032] In this invention, the sewage storage device and buffer section can accommodate the sewage discharged from the filtration device during the operation of the suction device, thus protecting the suction device and preventing the sewage discharged from the filtration device from directly entering the suction device when subjected to a large suction force, which would affect the working performance of the suction device.

[0033] The specific embodiments of the present invention will now be described in further detail with reference to the accompanying drawings. Attached Figure Description

[0034] The accompanying drawings, as part of this invention, are used to provide a further understanding of the invention. The illustrative embodiments and descriptions of the invention are used to explain the invention, but do not constitute an undue limitation of the invention. Obviously, the drawings described below are merely some embodiments, and those skilled in the art can obtain other drawings based on these drawings without creative effort. In the drawings:

[0035] Figure 1 This is a schematic diagram of the structure of the washing machine in an embodiment of the present invention;

[0036] Figure 2 These are schematic diagrams of the internal structure of the washing machine in Embodiments 1 and 7 of the present invention;

[0037] Figure 3 This is a schematic diagram of the connection structure between the filtration device and the recycling device in Embodiments 1 and 7 of the present invention;

[0038] Figure 4 This is a partial enlarged view (normal state) of the wastewater inlet of the recycling device in Embodiment 1 of the present invention;

[0039] Figure 5 This is a partial enlarged view of the sewage inlet of the recycling device in Embodiment 1 of the present invention (the blocked state when the air pump is turned on);

[0040] Figure 6 This is a partial enlarged view of the sewage inlet of the recycling device in Embodiment 1 of the present invention (open state after the air pump is turned off);

[0041] Figure 7 This is a schematic diagram of the sealing component in Embodiment 1 of the present invention;

[0042] Figure 8 This is a schematic diagram of the connection structure between the filtration device and the recovery device in Embodiment 4 of the present invention (there is no water in the wastewater storage device);

[0043] Figure 9 This is the present invention. Figure 8 A magnified schematic diagram of point A in the middle;

[0044] Figure 10 This is a schematic diagram of the connection structure between the filtration device and the recycling device in Embodiment 4 of the present invention (the sewage storage device is full of water);

[0045] Figure 11 This is the present invention. Figure 10 Enlarged view of point B in the middle;

[0046] Figure 12 This is a schematic diagram of the connection structure between the filtration device and the recycling device in Embodiment Six of the present invention.

[0047] In the diagram: 10. Housing; 100. Water tank; 110. Window gasket; 210. Drainage pipe; 220. Circulation pipe; 230. Return water pipe; 240. Sewage pipe; 241. Sewage control valve; 250. External discharge pipe; 260. Water tank drain pipe; 270. Switching device; 300. Water inlet box; 400. Circulation pump; 500. Recycling device; 510. Housing; 520. Filter assembly; 531. First chamber; 532. Second chamber; 540. Sealing component; 541. Base; 542. Opening part; 550. Wastewater inlet; 551, tubular section; 552, connecting section; 600, filtration device; 610, filtration chamber; 6101, water inlet; 6102, filtered water outlet; 6103, sewage outlet; 620, filtration mechanism; 621, water outlet connector; 660, drive mechanism; 680, cleaning particles; 690, baffle; 810, air pump; 811, suction pipeline; 820, wastewater temporary storage device; 821, vent hole; 822, float; 823, guide section; 830, buffer section; 831, vent pipeline; 832, vent hole.

[0048] It should be noted that these accompanying drawings and textual descriptions are not intended to limit the scope of the invention in any way, but rather to illustrate the concept of the invention to those skilled in the art by referring to specific embodiments. Detailed Implementation

[0049] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments will be clearly and completely described below with reference to the accompanying drawings. The following embodiments are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0050] In the description of this invention, it should be noted that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "inner", "outer", etc., 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 invention 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 limiting this invention.

[0051] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" 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 invention based on the specific circumstances.

[0052] Example 1

[0053] like Figures 1 to 7 As shown, this embodiment provides a washing machine, including:

[0054] Water container 100;

[0055] The filter device 600 is connected to the water tank 100, receives water from the water tank 100 for filtration, and has a drain outlet 6103 for discharging sewage.

[0056] The recycling device 500 is used to collect the wastewater discharged from the filtration device 600.

[0057] In this embodiment, the washing machine is equipped with a circulating filter pipe with both ends connected to the water tank 100, and a filter device 600 is installed on the circulating filter pipe. A circulating pump 400 is also installed on the circulating filter pipe, which drives the water in the water tank 100 to continuously circulate through the circulating filter pipe. When the water passes through the filter device 600, impurities such as lint are removed, thereby reducing the lint content in the water and improving the washing effect of clothes.

[0058] The filter device 600 is equipped with a drain outlet 6103. Filtered impurities remaining in the filter device 600 after filtration can be discharged with the water flow through the drain outlet 6103, eliminating the need for manual cleaning by the user and making it more convenient. The recycling device 500 is connected to the drain outlet 6103 of the filter device 600. Wastewater carrying filtered impurities discharged from the drain outlet 6103 can be collected in the recycling device 500 instead of flowing into the drain water and being discharged from the washing machine. This method prevents microplastics from the filtered impurities from being carried away by the water flow and entering the ecological cycle, thus avoiding harm to the ecological environment and human health.

[0059] Due to space limitations inside the washing machine, there may be a considerable distance between the filter device 600 and the recycling device 500, resulting in a longer path for wastewater to flow into the recycling device 500. Figure 1 As shown, in this embodiment, the recycling device 500 and the filter device 600 are respectively located on the left and right sides of the top of the washing machine's casing 10. Without external force, it is difficult for the wastewater in the filter device 600 to be completely discharged into the recycling device 500. Furthermore, if the recycling device 500 is installed at a height higher than the drain outlet 6103 of the filter device 600, the wastewater may even be unable to be discharged.

[0060] Washing machines typically use a traditional water pump to drive the water flow. However, since the filter device 600 discharges wastewater carrying filtered impurities into the recycling device 500, the traditional pumping method may cause blockage when the wastewater passes through the pump body, leading to washing machine malfunction.

[0061] To address the issue of wastewater being discharged from the filter device 600 into the recycling device 500, a suction device is provided in the washing machine of this embodiment. The suction device can perform a suction action to draw air from the space outside the drain port 6103, thereby driving the wastewater in the filter device 600 to be discharged through the drain port 6103 into the recycling device 500 under the action of pressure difference.

[0062] In this embodiment, an air pump 810 is used as a suction device. Simultaneously, a unidirectional sealing element 540 is installed at the sewage inlet 550 of the recovery device 500. When the filter device 600 needs to discharge sewage, the air pump 810 is controlled to perform a suction action, and the sealing element 540 blocks the sewage inlet 550. This causes the air between the discharge port 6103 and the recovery device 500 to be drawn out by the air pump 810, creating a negative pressure environment in the pipeline outside the discharge port 6103. The sewage inside the filter device 600 can then be discharged from the discharge port 6103 under the action of the pressure difference.

[0063] In this way, during the operation of the air pump 810, because the sewage inlet 550 of the recovery device 500 is blocked, air will not enter the space between the sewage outlet 6103 and the recovery device 500 through the sewage inlet 550. This allows a strong pressure difference to be quickly formed inside and outside the sewage outlet 6103 of the filter device 600, thereby enabling the sewage in the filter device 600 to be efficiently and quickly discharged into the recovery device 500 for collection. At the same time, the air pump 810 is only used to draw air to create a negative pressure environment, and the discharged sewage does not pass through the air pump 810, avoiding the problem of pump blockage that is easily caused by water pump transportation.

[0064] In a further embodiment, a wastewater storage device 820 with an internal cavity is provided between the filtration device 600 and the recycling device 500. An air pump 810 is connected to the internal cavity of the wastewater storage device 820 through a suction pipe 811 to draw air from it. The outlet of the wastewater storage device 820 is higher than the wastewater inlet 550 of the recycling device 500.

[0065] The sewage outlet 6103 is connected to the sewage temporary storage device 820 through a sewage pipe 240. A sewage control valve 241 that can be opened / closed is installed on the sewage pipe 240 to control the opening and closing of the sewage pipe 240.

[0066] When the circulation pump 400 circulates the water in the water tank 100 for filtration, the drain control valve 241 is closed, and the drain pipe 240 is disconnected. When it is necessary to discharge wastewater from the filter device 600, the washing machine performs the following steps in sequence:

[0067] S1. Control the air pump 810 to perform the suction action, the sewage inlet 550 of the recovery device 500 is blocked by the sealing part 540, and the air in the sewage temporary storage device 820 is extracted.

[0068] S2. Open the sewage control valve 241, connect the sewage pipe 240, and the sewage in the filter device 600 is discharged into the sewage storage device 820 under the action of pressure difference.

[0069] S3. Turn off the air pump 810, open the sewage inlet 550 with the sealing part 540, and discharge the sewage in the sewage temporary storage device 820 into the recycling device 500 under the action of gravity.

[0070] In the above scheme, by setting up a sewage temporary storage device 820, sewage can be temporarily stored in the internal cavity of the sewage temporary storage device 820 after being drawn out from the filter device 600 under the action of pressure difference. This avoids the situation where sewage is drawn into the air pump 810 due to the large suction force when it flows out of the filter device 600 quickly, thus protecting the air pump 810 and preventing its working performance from being affected.

[0071] The drain control valve 241 remains closed initially when the air pump 810 begins its suction action. There is no connection between the filter device 600 and the wastewater storage device 820, nor between the wastewater storage device 820 and the recovery device 500 due to the presence of the sealing element 540. This allows a more significant negative pressure environment to form more quickly within the wastewater storage device 820. Then, the drain control valve 241 is opened, allowing the wastewater in the filter device 600 to receive a greater driving force, thus efficiently and fully draining it into the wastewater storage device 820.

[0072] In a further embodiment, the air pump 810 is a bidirectional pump, capable of both suction and aeration to introduce air into the wastewater storage device 820. In step S3, the air pump 810 is first turned off to stop suction, then turned on again and aeration is initiated to introduce air into the wastewater storage device 820, driving the wastewater therein into the recycling device 500.

[0073] In another embodiment, the air pump 810 is a suction pump with only a suction function. The washing machine also includes an air pump (not shown in the figure) connected to the wastewater storage device. In the above embodiment, step S3 includes: turning off the air pump 810, turning on the air pump, introducing air into the wastewater storage device 820, and driving the wastewater therein to be discharged into the recycling device 500.

[0074] Furthermore, a buffer section 830 is provided between the air pump 810 and the sewage temporary storage device 820, and the buffer section 830 has a buffer chamber inside. The buffer chamber is connected to the internal cavity of the sewage temporary storage device 820, and the suction pipe 811 is connected to the buffer section 830, which conducts the air pump 810 and the buffer chamber.

[0075] In the above scheme, after the air pump 810 is turned on, it can create a negative pressure state inside the buffer section 830 and the sewage storage device 820. Then, after the sewage discharge control valve 241 is opened, the sewage in the filter device 600 can be quickly discharged under the pressure difference. By using the space between the air pump 810 and the sewage storage device 820, and even the buffer section 830, even if a large amount of sewage overflows from the sewage storage device 820, the overflowing sewage can be stored in the buffer chamber of the buffer section 830, and will not directly enter the air pump 810.

[0076] In a preferred embodiment, the buffer section 830 is positioned above the sewage storage device 820 and connected via a vertically extending vent pipe 831, which is connected to the top of the sewage storage device 820. This structure, on the one hand, fully utilizes the internal cavity of the sewage storage device 820, allowing sewage to enter the vent pipe 831 only when the internal cavity is full, thus increasing the amount of sewage the sewage storage device 820 can hold. On the other hand, the increased height required for sewage to enter the buffer section 830 corresponds to a greater suction force required by the air pump 810, further preventing overflow of the sewage storage device 820.

[0077] Similarly, the air pump 810 is positioned above the buffer section 830, and the suction pipe 811 extends vertically to connect the air pump 810 with the buffer chamber of the buffer section 830. In this way, the suction force required for sewage to enter the air pump 810 is further increased, further preventing water from entering the air pump 810.

[0078] In this embodiment, a vent 821 is provided on the top of the sewage storage device 820 to connect the internal cavity of the sewage storage device 820 with the external space. Especially for the scheme where sewage is discharged into the recycling device 500 by gravity, after the air pump 810 is turned off, external air can enter the internal cavity of the sewage storage device 820 through the vent 821, driving the sewage in it to flow towards the recycling device 500, thereby causing the sealing member 540 to open the sewage inlet 550, allowing the sewage to be discharged into the recycling device 500.

[0079] In the above scheme, the opening area of ​​the vent 821 is small. When the air pump 810 is in the on state to perform the suction action, the air entering the sewage storage device 820 through the vent 821 will not significantly affect the formation of the negative pressure environment. After the air pump 810 is turned off, the air in the sewage storage device 820 is no longer extracted. Due to the setting of the vent 821, the internal pressure of the sewage storage device 820 can quickly return to near atmospheric pressure, and the sewage is pushed out into the recycling device 500 by the entry of air. By setting the vent 821 on the sewage storage device 820, the situation where the air pressure in the recycling device 500 is too high, and the sewage cannot flow into the recycling device 500 after the air pump 810 stops working, is avoided.

[0080] In this embodiment, the sealing component 540 specifically includes:

[0081] The substrate 541 is installed on the sewage inlet 550 of the recycling device 500;

[0082] The opening part 542 is movable relative to the base 541, opening / closing the space outside and inside the recycling device 500.

[0083] Specifically, the recycling device 500 includes a housing 510 with a recycling chamber inside. A wastewater inlet 550 is disposed on the housing 510. The outer periphery of the wastewater inlet 550 extends a certain length from the inner wall of the housing 510 into the recycling device 500 to form a tubular portion 551. A base 541 is installed at the extended end of the tubular portion 551. An opening portion 542 is movable relative to the extended end of the tubular portion 551 to open / close the opening at the extended end of the tubular portion 551.

[0084] Furthermore, the base 541 is fitted onto the extended end of the tubular portion 551, and the opening portion 542 covers the opening of the tubular portion 551 from the outside to achieve a seal. The opening portion 542 flips away from the tubular portion 551 to open the opening. The sealing member 540 has a simple structure, and the opening portion 542 abuts against the right end face of the tubular portion 551, preventing it from flipping inward, thus achieving unidirectional flow of sewage inlet 550 from the outside to the inside.

[0085] In this embodiment, the opening portion 542 is made of a flexible material capable of elastic deformation, such as rubber. When the air pump 810 is turned on, the portion of the opening portion 542 covering the opening deforms inward toward the tubular portion 551, thereby sealing the opening. The opening portion 542 can wrap around the angle between the inner wall of the tubular portion 551 and the right end face of the tubular portion 551 to a certain extent, thereby increasing the contact area between the opening portion 542 and the opening of the tubular portion 551. At the same time, the opening portion 542 forms a convex surface toward the surface of the tubular portion 551, increasing the surface area, which in turn increases the force-bearing area of ​​the opening portion 542 under negative pressure adsorption. This allows the sealing member 540 to achieve a better sealing effect on the sewage inlet 550, which is conducive to the rapid formation of a negative pressure environment.

[0086] Furthermore, the opening part 542 is integrally formed with the base 541, that is, the sealing part 540 is made of flexible material as a whole. There is no need for an additional connecting structure between the base 541 and the opening part 542, so that the opening part 542 and the base 541 can move relative to each other, and the opening part 542 can open / seal the opening at the right end of the tubular part 551.

[0087] In a further embodiment, the outer periphery of the sewage inlet 550 extends a certain length from the outer wall of the housing 510 of the recycling device 500 to the outside of the recycling device 500 to form a connecting part 552. The connecting part 552 is used to connect with a pipeline and to the sewage temporary storage device 820 through the pipeline.

[0088] Specifically, the end of the pipeline can be sleeved onto the connecting part 552, making installation more convenient.

[0089] The recycling device 500 of this embodiment also includes a filter assembly 520 disposed inside the housing 510. The filter assembly 520 divides the recycling chamber inside the housing 510 into a first chamber 531 and a second chamber 532 distributed vertically. The drain port 6103 of the filter device 600 is connected to the first chamber 531. Wastewater carrying filtered impurities enters the first chamber 531, is filtered by the filter assembly 520, and then enters the second chamber 532. The filtered impurities are collected in the first chamber 531.

[0090] In the above scheme, after the recycling device 500 collects the wastewater discharged from the filtration device 600, it can further filter the wastewater through the internal filtration component 520 to separate the filter impurities from the wastewater. This allows the user to directly collect and process the separated filter impurities, avoiding the situation where filter impurities are mixed in with the wastewater and cannot be effectively treated.

[0091] Specifically, the filter assembly 520 can be a frame horizontally positioned at a certain height within the recovery chamber and a filter screen laid on the frame. After wastewater carrying filtered impurities enters the first chamber 531, the water can pass through the filter assembly 520 into the second chamber 532. The filtered impurities are blocked by the filter screen and remain on the upper surface of the filter assembly 520.

[0092] The filter element 520 can filter microplastics in wastewater, preventing microplastics from entering the water body.

[0093] In this embodiment, the recycling device 500 is inserted / removable and installed on the washing machine housing 10. The user can remove the recycling device 500 from the housing 10 for cleaning.

[0094] Specifically, the housing 510 of the recycling device 500 is insertable / removable from the housing 10, and the upper side of the housing 510 has an opening. When the user removes the housing 510 from the housing 10, the filter impurities adhering to the upper surface of the filter assembly 520 can be cleaned through the opening on the upper side of the housing 510. Preferably, the filter assembly 520 is detachably connected to the housing 510, allowing the user to remove the filter assembly 520 from inside the housing 510 for cleaning, making the operation more convenient.

[0095] In a preferred embodiment, a water outlet is provided on the second chamber 532 for discharging filtered clean water. By providing a water outlet on the second chamber 532, the clean water entering the second chamber 532 can be promptly discharged from the recovery device 500, preventing overflow of the recovery device 500 when a large amount of wastewater is discharged from the filtration device 600. Otherwise, the capacity of the second chamber 532 would need to be increased, which would require a larger volume of the recovery device 500, resulting in it occupying a large space inside the washing machine and hindering the miniaturization of the overall washing machine size.

[0096] On the other hand, the water in the second chamber 532 can be automatically discharged from the outlet. When cleaning the recycling device 500, the user only needs to clean the filter impurities on the filter assembly 520, without having to manually pour out the clean water in the second chamber 532. When the filter assembly 520 is detachably installed in the housing 510, the user does not even need to completely remove the housing 510 from the washing machine's cabinet 10; they only need to remove the filter assembly 520 for cleaning, making operation more convenient.

[0097] Preferably, the outlet of the second chamber 532 is connected to the water tank 100 via a pipe, allowing the filtered water from the filter assembly 520 to be passed into the water tank 100 for reuse, thereby saving water consumption in the washing machine. Alternatively, the outlet of the second chamber 532 can be connected to the outside of the washing machine via a pipe, allowing the filtered water without impurities to be directly discharged from the washing machine, thus preventing microplastics from entering the ecological cycle.

[0098] In this embodiment, the filtration device 600 specifically includes:

[0099] A filter chamber 610 is provided with a water inlet 6101, a filtered water outlet 6102 and a sewage outlet 6103. The water inlet 6101 and the filtered water outlet 6102 are connected to the circulating filter pipeline.

[0100] The filter mechanism 620 is rotatably disposed within the filter chamber 610;

[0101] The drive mechanism 660 drives the filter mechanism 620 to rotate within the filter chamber 610.

[0102] The filtration mechanism 620 includes a filter screen support and a filter screen covering the surface of the filter screen support, dividing the interior of the filtration chamber 610 into an outer chamber and an inner chamber. Water from the water tank 100 enters the outer chamber of the filtration chamber 610 through the inlet 6101. Impurities in the water are blocked by the filter screen and adhere to the outer surface of the filtration mechanism 620. Clean water without impurities enters the inner chamber and flows out through the outlet connector 621, which communicates with the inner chamber, and finally flows out of the filtration chamber 610 from the filtered water outlet 6102. Through the design of the filter screen's pore size, the filtration mechanism 620 can not only filter large-sized lint from the water but also filter microplastics, thereby significantly reducing the microplastic content in the washing machine's wastewater.

[0103] When the filter device 600 needs cleaning, the filter device 620 is driven to rotate within the filter chamber 610 by the drive mechanism 660, such as a motor. This agitates the residual water within the filter chamber 610, causing filter impurities adhering to the surface of the filter device 620 to be detached from the filter device 620 and incorporated into the water within the filter chamber 610 under the action of centrifugal force and the turbulent water flow. Finally, the wastewater is discharged from the drain outlet 6103 by the action of the air pump 810 and collected by the recycling device 500.

[0104] In this embodiment, the self-cleaning operation of activating the drive mechanism 660 to rotate the filter mechanism 620, and / or the sewage discharge operation of activating the air pump 810 to discharge wastewater from the filter device 600, are performed at least once during a complete washing cycle of the washing machine. During the sewage discharge operation, the filter mechanism 620 may remain stationary or be driven to rotate by the drive mechanism 660.

[0105] Furthermore, the filter chamber 610 of the filter device 600 is also equipped with cleaning particles 680, which are used to clean the inner wall of the filter chamber 610 and the outer wall of the filter mechanism 620 by friction and collision with the water flow. During the circulating filtration process, the cleaning particles 680 continuously rub against the inner wall of the filter chamber 610 and the outer wall of the filter mechanism 620 with the flowing water, causing the attached filter impurities to fall off, thereby preventing the deposition of filter impurities and avoiding the filter mechanism 620 from being covered by filter impurities, which would affect the filtration efficiency. When the filter mechanism 620 rotates for self-cleaning, the cleaning particles 680 move in the filter chamber 610 under the action of the turbulent water flow, rubbing against the inner wall of the filter chamber 610 and the outer wall of the filter mechanism 620, thereby improving the removal efficiency of filter impurities and making the self-cleaning effect of the filter device 600 better.

[0106] A baffle 690 is also provided inside the filter chamber 610, dividing the interior of the filter chamber 610 into a first space on the left and a second space on the right. The cleaning particles 680 and the main body of the filter mechanism 620 are located in the first space. The water inlet 6101 communicates with the first space, and the filtered water outlet 6102 and the drain outlet 6103 communicate with the second space. The baffle 690 is provided with water passage holes connecting the first space and the second space. Wastewater in the filter chamber 610 can be discharged from the drain outlet 6103 through the baffle 690. The cleaning particles 680 cannot pass through the water passage holes and are thus blocked by the baffle 690 on the left side, preventing the cleaning particles 680 from being discharged with the wastewater through the drain outlet 6103 or from accumulating at the drain outlet 6103 and causing blockage.

[0107] In this embodiment, the washing machine's circulating filter pipeline specifically includes:

[0108] The drain pipe 260 of the water tank connects the water tank 100 to the inlet of the circulating pump 400;

[0109] The drain pipe 210 is connected at one end to the outlet of the circulating pump 400 and at the other end to the switching device 270.

[0110] The circulation pipe 220 is connected at one end to the switching device 270 and at the other end to the inlet 6101 of the filter device 600.

[0111] The return water pipe 230 is connected at one end to the filtered water outlet 6102 of the filter device 600 and at the other end to the water tank 100, so as to transport the filtered water to the water tank 100.

[0112] The switching device 270 is also connected to the external drain pipe 250 that drains water to the outside of the washing machine. The switching device 270 can control the circulation pipe 220 and the external drain pipe 250 to be connected to the drain pipe 210. In this way, a single circulation pump 400 can provide driving force for the circulation filtration and drainage of the washing machine, and the corresponding functions can be achieved simply by controlling the direction of the switching device 270.

[0113] The outlet of the return water pipe 230 is connected to the window gasket 110 at the opening of the water tank 100. Water filtered by the filter device 600 enters the water tank 100 through the window gasket 110.

[0114] In this embodiment, a recycling device 500 is installed in the washing machine to collect the wastewater discharged from the filtration device 600, preventing wastewater carrying filter impurities from being directly discharged into the washing machine and causing microplastics in the filter impurities to enter the ecological cycle, which could affect the ecological environment and human health. The recycling device 500 is equipped with a filter assembly 520 to filter the collected wastewater, thereby separating the filter impurities from the water, making it easier to clean the filter impurities.

[0115] By using an air pump 810 to draw air between the filter device 600 and the recovery device 500, and simultaneously installing a unidirectional sealing element 540 at the sewage inlet 550 of the recovery device 500, a negative pressure environment can be quickly created outside the sewage outlet 6103. This pressure difference drives the sewage in the filter device 600 to be discharged from the sewage outlet 6103, and the sewage then impacts the sealing element 540 to open the sewage inlet 550, collecting the sewage into the recovery device 500. Even if the distance between the filter device 600 and the recovery device 500 is large or there is a height difference, the sewage in the filter device 600 can still be fully discharged. A sewage storage device 820 is installed between the filter device 600 and the recovery device 500, and the sewage storage device 820 is connected to the air pump 810 via a buffer section 830, effectively preventing the air pump 810 from drawing in sewage while drawing air.

[0116] Example 2

[0117] The difference between this embodiment and the first embodiment described above is that the opening part of the sealing member is made of a hard material, and the surface of the opening part facing the tubular part is a convex surface that protrudes into the tubular part.

[0118] Specifically, the opening of the tubular part is circular, the opening part is a disc-shaped structure, and the surface of the opening part facing the opening of the tubular part is a convex arc surface in the middle.

[0119] When the opening portion blocks the opening of the tubular section, its curved surface allows it to partially extend into the opening. Furthermore, the surface of the opening portion that contacts the opening of the tubular section is inclined relative to the end face of the tubular section, resulting in a more secure seal and a better sealing effect. Simultaneously, the curved structure of the opening portion increases the surface area, which in turn increases the area subjected to the suction force of the air pump, further enhancing the sealing performance and thus better creating a negative pressure environment between the drain port of the filter device and the recovery device.

[0120] In a further embodiment, the opening portion of the sealing member is separately disposed from the base, and the two are connected in a relatively movable manner. Specifically, the opening portion and the base are rotatably connected, and the opening portion opens / closes the tubular opening through a flipping motion.

[0121] In another embodiment, the opening portion and the base can also be integrally molded from plastic, wherein both the opening portion and the base are rigid and will not undergo significant deformation. The opening portion and the base are connected by a thin connecting piece, which is thin enough to deform under a small force, allowing relative movement between the opening portion and the base.

[0122] Example 3

[0123] The difference between this embodiment and the first embodiment described above is that the sealing element is installed at the outlet of the recycling device and flows unidirectionally from the inside of the recycling device to the outside.

[0124] Specifically, when the air pump is turned on, the sealing component seals the outlet of the recovery device, preventing outside air from entering and creating a negative pressure environment inside the buffer section, the wastewater storage device, and the recovery device. Wastewater from the filtration device is discharged under the pressure difference, with most of it stored in the wastewater storage device, and a small portion possibly entering the recovery device directly. However, the wastewater blocks the pipeline between the wastewater storage device and the recovery device, preventing further air extraction from the recovery device.

[0125] When the air pump is turned off, the wastewater storage device can return to near atmospheric pressure, while the recovery device still maintains a certain negative pressure. Wastewater in the storage device can then be discharged into the recovery device. Simultaneously, as wastewater enters the recovery device, the sealing element can open the outlet, allowing air inside the recovery device to escape along with the wastewater, ensuring smooth wastewater flow into the recovery device.

[0126] Example 4

[0127] like Figures 8 to 11 As shown, this embodiment further defines Embodiment 1 above. The washing machine also includes an isolation mechanism disposed between the drain outlet 6103 and the air pump 810. This isolation mechanism can gradually disconnect the connection between the air pump 810 and the drain outlet 6103 as sewage is discharged, preventing excessive sewage from being drawn into the air pump 810 when the air pump 810 is continuously pumping. This protects the air pump 810 from sewage entering and affecting its performance.

[0128] In this specific embodiment, the isolation mechanism includes a floating component, and a vent 832 is provided on the communication path between the air pump 810 and the sewage outlet 6103. During the sewage discharge process, the floating component rises with the water level to below the vent 832 and blocks the vent 832.

[0129] In this embodiment, the floating component is a float 822, and the diameter of the float 822 is larger than the diameter of the vent 832.

[0130] In a further embodiment, the float 822 is disposed inside the sewage storage device 820, and the vent 832 is disposed on the top wall of the sewage storage device 820. Preferably, the isolation mechanism further includes a guide portion 823 extending from the bottom of the sewage storage device 820 toward the vent 832, the guide portion 823 having a hollow channel in which the float 822 is disposed.

[0131] like Figure 8 and Figure 9 As shown, initially, the sewage storage device 820 is empty, and the float 822 is located at the bottom of the guide section 823. During the process of sewage being discharged into the sewage storage device 820, the water level in the sewage storage device 820 gradually rises. A through-hole is provided on the side wall of the guide section 823 to connect the hollow channel with the external space of the guide section 823. The water level inside the guide section 823 rises synchronously, and the float 822 always floats at the water level, gradually rising as the water level increases. Figure 10 and Figure 11 As shown, when the sewage storage device 820 is filled with water, the float 822 rises with the water level to the top of the sewage storage device 820 and blocks the vent 832 from below, so that the sewage cannot overflow further upward through the vent 832, ensuring that the sewage will not overflow from the vent 832 into the air pump 810.

[0132] In the above solution, the vent 832 is blocked by a float 822 installed inside the sewage storage device 820. The vent 832 can be blocked only when the sewage storage device 820 is full, ensuring that sewage does not enter the air pump 810, allowing the filter device 600 to discharge a larger volume of sewage at once, thus improving sewage discharge efficiency. A guide 823 guides the movement of the float 822, ensuring that the float 822 can only reciprocate within the guide 823, preventing deviations in its trajectory that could lead to failure to block the vent 832.

[0133] In this embodiment, the guide portion 823 is a cylindrical structure, and the inner diameter of the guide portion 823 is larger than the outer diameter of the float 822. A clearance fit is formed between the float 822 and the guide portion 823, which reduces or even eliminates the frictional resistance that exists when the float 822 reciprocates inside the guide portion 823, thereby avoiding the situation where the float 822 gets stuck inside the guide portion 823 and cannot rise with the water surface.

[0134] In a preferred embodiment, the guide part 823 extends vertically inside the sewage storage device 820, which is more conducive to the float 822 rising unimpeded with the rise of the water level to block the vent 832.

[0135] In this embodiment, the lower end of the vent pipe 831 is connected to the top wall of the sewage storage device 820, and the connection between the vent pipe 831 and the sewage storage device 820 forms a vent hole 832. The diameter of the float 822 is larger than the diameter of the vent pipe 831. The float 822 rises with the water level and blocks the vent hole 832. That is, when the float 822 moves to the lower end of the vent pipe 831, it blocks the lower opening of the vent pipe 831.

[0136] In this embodiment, by setting a float 822 and a guide 823 in the sewage temporary storage device 820, the float 822 can block the vent 832 above when the sewage temporary storage device 820 is full of sewage, preventing sewage from overflowing from the vent 832, thus preventing sewage from overflowing into the air pump 810 and ensuring the working performance of the air pump 810.

[0137] Example 5

[0138] The difference between this embodiment and the fourth embodiment described above is that the isolation mechanism composed of the float and the guide is located inside the buffer section.

[0139] Specifically, a vent is provided on the top wall of the buffer section, and it is connected to an air pump through a suction pipe. A guide section is provided inside the buffer section, extending vertically upward from the bottom to the vent. The side wall of the guide section has a through hole, and a float is located inside the guide section.

[0140] In this embodiment, the volume of the wastewater storage device is set to be larger than the volume of the filtration device. Under normal operating conditions of the washing machine, wastewater generally will not completely fill the wastewater storage device. However, in some abnormal situations, a large amount of wastewater may enter the wastewater storage device, causing an overflow. In this case, the wastewater enters the buffer section upwards along the vent pipe and gradually accumulates in the buffer chamber of the buffer section, rather than being directly sucked into the air pump.

[0141] As sewage enters the buffer section, the water level gradually rises. The float rises along with the water level in the guide section, moving closer to the vent at the top. When the buffer section is also filled with sewage, the float rises to the top of the guide section, blocking the vent at the lower end of the suction pipe and preventing sewage from overflowing from the buffer section and being sucked into the pump.

[0142] Example 6

[0143] like Figure 12 As shown, the difference between this embodiment and the above embodiment four is that: both the sewage temporary storage device 820 and the buffer part 830 are provided with an isolation mechanism composed of a float 822 and a guide part 823, and the top wall of the sewage temporary storage device 820 and the top wall of the buffer part 830 are respectively provided with vent holes 832 that can be blocked by the corresponding float 822.

[0144] Specifically, the lower end of the vent pipe 831 is connected to the top wall of the sewage storage device 820, forming a vent hole 832. The lower end of the suction pipe 811 is connected to the top wall of the buffer section 830, forming another vent hole 832.

[0145] Under normal circumstances, when the filter device 600 discharges sewage, the float 822 in the sewage storage device 820 rises with the water level until it reaches the top of the sewage storage device 820, where it blocks the vent 832 and prevents sewage from overflowing from the sewage storage device 820. However, if the float 822 in the sewage storage device 820 becomes accidentally stuck and cannot move, the vent pipe 831 will remain connected to the sewage storage device 820. As the filter device 600 continues to discharge sewage, the sewage will flow upwards along the vent pipe 831 into the buffer section 830.

[0146] In this embodiment, a float 822 is also provided inside the buffer section 830. If sewage continues to enter the buffer section 830, the float 822 inside the buffer section 830 will gradually rise with the water level. When the buffer section 830 is also filled with sewage, the float 822 can block the vent 832 on the top wall of the buffer section 830, that is, seal off the lower end of the suction pipe 811, so that sewage cannot overflow from the buffer section 830 into the air pump 810.

[0147] In this embodiment, floats 822 are provided in both the sewage storage device 820 and the buffer section 830, providing dual protection. Even if the float 822 in the sewage storage device 820 fails and causes sewage to overflow, the float 822 in the buffer section 830 can still prevent sewage from further overflowing into the air pump 810 by blocking the vent 832 at the lower end of the suction pipe 811 when the buffer section 830 is full of sewage, making it safer and more reliable.

[0148] Example 7

[0149] like Figure 2 and Figure 3 As shown, this embodiment is a further limitation of the first embodiment described above. The washing machine further includes a detergent dispensing device, which has a water inlet box 300 connected to the water tank 100. The outlet of the second chamber 532 of the recycling device 500 is connected to the water inlet box 300, allowing filtered clean water to be introduced into the water inlet box 300 and then into the water tank 100.

[0150] In the above scheme, the recycling device 500 filters the collected sewage, and the filtered clean water is returned to the water tank 100 through the water inlet box 300 for reuse. This can flush out any detergent that may be present inside the water inlet box 300 and improve the utilization rate of the detergent.

[0151] In this embodiment, the water inlet box 300 and the outlet of the second chamber 532 of the recycling device 500 can be connected by a pipeline. After the filtered clean water is discharged from the outlet, it enters the water inlet box 300 through the pipeline, and then enters the water tank 100 through the pipeline connecting the water inlet box 300 and the water tank 100 to participate in the washing process.

[0152] In a preferred embodiment, the recycling device 500 is installed inside the water inlet box 300. After filtering the sewage discharged by the filtration device 600, the clean water flows out through the outlet on the second chamber 532 and directly into the water inlet box 300. Then, it enters the water holding tank 100 along the pipeline connecting the water inlet box 300 and the water holding tank 100.

[0153] With the above structure, the internal space of the water inlet box 300 can be fully utilized, and there is no need to set up a separate pipeline to connect the recycling device 500 and the water inlet box 300, making the internal structure of the washing machine more compact and thus saving the installation space inside the washing machine.

[0154] Example 8

[0155] like Figure 2 and Figure 3 As shown, this embodiment provides a control method for the washing machine described in Embodiment 1, which controls the air pump 810 to perform suction actions multiple times when the filter device 600 needs to discharge sewage, thereby completing the discharge of sewage from the filter device 600 in multiple stages.

[0156] In one embodiment, the washing machine controls the wastewater in the filter device 600 to be discharged in multiple times based on the amount of wastewater discharged by the air pump 810 each time it performs a suction action.

[0157] Specifically, a water level detection device is installed on the wastewater storage device 820 to detect the water level inside the wastewater storage device 820. The control method for the washing machine includes:

[0158] A1. Control the air pump 810 to perform the suction action;

[0159] A2. When the water level in the sewage storage device 820 rises to the first set water level, the air pump 810 is turned off.

[0160] A3. The water level in the sewage temporary storage device 820 drops to the second set water level, and the process returns to step A1.

[0161] Furthermore, based on the maximum amount of sewage in the filter device 600 and the difference between the first set water level and the second set water level, the washing machine is equipped with a preset number N1 for the air pump 810 to perform the suction action. When the number of times step A1 is executed reaches N1, the washing machine will no longer execute step A3 after step A2 is completed, thus ending the sewage discharge process of the filter device 600.

[0162] In another embodiment, the washing machine controls the sewage in the filter device 600 to be discharged in multiple times based on the duration of each suction action performed by the air pump 810.

[0163] Specifically, the control methods for washing machines include:

[0164] B1. Control the air pump 810 to perform the suction action;

[0165] B2. When the duration of the suction action performed by the air pump 810 reaches the first preset duration t1, the air pump 810 is turned off.

[0166] B3. After the air pump 810 is shut down for the second preset time t2, return to step B1.

[0167] Furthermore, based on the maximum amount of sewage in the filter device 600 and the amount of sewage that can be discharged by continuously performing the suction action for a first preset time t1, the washing machine is equipped with a preset number N2 for the air pump 810 to perform the suction action. When the number of times step B1 is performed reaches N2, the washing machine will no longer perform step B3 after step B2 is completed, thus ending the sewage discharge process of the filter device 600.

[0168] Through the above two methods, the washing machine can control the amount of wastewater discharged from the filter device 600 during each suction operation of the air pump 810, ensuring that the amount of wastewater does not exceed the maximum volume of the wastewater storage device 820. After each suction operation is completed, the machine waits for the wastewater received in the wastewater storage device 820 to be discharged into the recycling device 500 before performing the next suction operation. This ensures that the wastewater storage device 820 does not overflow during the discharge of wastewater from the filter device 600, preventing wastewater from overflowing from the wastewater storage device 820 and being sucked into the air pump 810.

[0169] In this embodiment, the volume of the sewage storage device 820 can be smaller than that of the filter device 600. By controlling the amount of sewage discharged when the air pump 810 performs a single suction action, the overflow of the sewage storage device 820 can be avoided, thereby reducing the overall volume of the sewage storage device 820 and saving installation space inside the washing machine.

[0170] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any way. Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make some modifications or alterations to the above-described technical content to create equivalent embodiments without departing from the scope of the present invention. Any simple modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of the present invention without departing from the scope of the present invention shall still fall within the scope of the present invention.

Claims

1. A washing machine, comprising: water container; The circulating filter pipeline is connected to the water tank at both ends; A filtration device is installed on the circulating filtration pipeline and connected to the water tank. It receives water from the water tank for filtration and has a drain outlet for discharging wastewater. Its characteristic is that it further includes: The suction device performs a suction action, driving the sewage in the filter device to be discharged through the drain outlet under the action of pressure difference; A recycling device is used to collect wastewater discharged from the filtration device; The wastewater inlet of the recycling device is equipped with a unidirectional sealing element that allows flow from the outside to the inside; or, the recycling device has an outlet, at which a unidirectional sealing element that allows flow from the inside to the outside is provided. The drain outlet of the filtration device is connected to a wastewater storage device with an internal cavity, and the wastewater storage device is connected to a recycling device; the suction device is connected to the internal cavity of the wastewater storage device and suctions air from inside the wastewater storage device.

2. The washing machine according to claim 1, characterized in that, The sealing element is installed at the wastewater inlet of the recycling device and has unidirectional flow from the outside to the inside; the sealing element includes: The substrate is installed on the wastewater inlet of the recycling device; The opening section is movable relative to the base body, allowing the connection / disconnection of the external and internal spaces of the recycling device.

3. The washing machine according to claim 2, characterized in that, The outer periphery of the sewage inlet extends a certain length from the inner wall of the recycling device into the recycling device to form a tubular section; the base is installed at the extended end of the tubular section, and the opening part moves relative to the extended end of the tubular section to open / block the opening at the extended end of the tubular section.

4. The washing machine according to claim 3, characterized in that, The substrate is fitted onto the extended end of the tubular portion; the opening portion covers the opening of the tubular portion from the outside to achieve sealing, and the opening portion flips away from the tubular portion to open the opening.

5. The washing machine according to claim 4, characterized in that, The opening part is made of flexible material. When the suction device is turned on, the part of the opening part covering the opening deforms and bulges into the tubular part, thereby sealing the opening.

6. The washing machine according to claim 4, characterized in that, The opening part is made of a rigid material, and the surface of the opening part facing the opening is a convex surface that protrudes into the tubular part.

7. The washing machine according to claim 3, characterized in that, The outer periphery of the sewage inlet extends a certain length from the outer wall of the recycling device to the outside of the recycling device to form a connection part, which is connected to the pipeline, and the pipeline is connected to the sewage outlet of the filter device.

8. The washing machine according to any one of claims 2-7, characterized in that, The opening portion is integrally formed with the base; or, the opening portion and the base are separately provided and connected in a relatively movable manner.

9. The washing machine according to any one of claims 1-7, characterized in that, A buffer section is provided between the suction device and the sewage storage device. The buffer section has a buffer chamber inside, which is connected to the internal cavity of the sewage storage device and the suction device.

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