Filtering collecting device and washing machine

Abstract

The utility model relates to a filter collection device and washing machine relate to filter collection equipment technical field, specifically relate to a filter collection device and washing machine, including the casing, be provided with filter collection chamber in the casing, be provided with filter screen in filter collection chamber, filter screen is hollow filter screen, and the one end face of filter screen is fluid inlet, and the other end face of filter collection screen is fluid discharge port, the both ends of filter screen are sealed and are connected with casing respectively, the first interface and the second interface are provided on the casing, the first interface is connected with the inside area of filter screen through fluid flow inlet and communicates, the second interface is connected with the inside area of filter screen through fluid discharge port and communicates, the utility model discloses the discharge of fluid is realized through the second pipeline, in this process, can impact the line cutting, lint, weaving lint article, contaminated particulate matter that adhere on filter screen, realize the cleaning of filter screen.

Description

Technical Field

[0001] This invention relates to the field of filtration and collection equipment technology, specifically to a filtration and collection device and a washing machine. Background Technology

[0002] Current washing machines primarily assess their ability to remove sweat and dirt during the washing process. However, during washing, clothes accumulate lint, fibers, and particulate contaminants. These contaminants, along with undissolved chemical cleaning agent particles, adhere to the washing machine's tripod, lifting ribs, drying channel, and drum walls. Consequently, the cleanliness of clothes after washing is poor, requiring secondary cleaning. This leads to a significant accumulation of dirt, bacteria, and secondary contamination in washing machines over long-term use.

[0003] Therefore, it is necessary to include a structure in washing machines to collect and filter lint, fabric fibers, particulate contaminants, and undissolved chemical cleaning agent particles. However, existing designs and applications have the following problems regarding the above issues: 1. Collection and filtration device in drum washing machines: Currently, drum washing machines on the market basically do not have the function of filtering and collecting lint, fuzz, textile lint, and particulate pollutants.

[0004] 2. A very small number of drum washing machines involve a filter collection device, but this requires a system that converts the detergent particles into foam before the washing process to avoid detergent collection. However, after the detergent particles are converted into foam, most of them float on top of the clothes, making it difficult to achieve optimal cleaning power. Drum washing machines use less water to achieve good tumbling power during the washing process. However, because drum washing machines use less water, there is a problem that clothes are not rinsed clean during the rinsing process. A large amount of foam is generated. Although it avoids the collection of detergent particles, it makes the problem of incomplete rinsing of foam on clothes more serious. Excessive foam makes the inner drum wall and lifting ribs smoother, which reduces the lifting ribs' ability to lift clothes, further reducing the tumbling power. At the same time, the smooth inner drum wall reduces the contact friction between the clothes and the inner drum wall, weakening the cleaning power. Because the system that converts the added detergent particles into foam and the filter and collection device for lint, lint, fabric lint, and particulate pollutants are too large overall, and there is insufficient space between the outer drum and the shell of the pulsator washing machine, they cannot be installed in the pulsator washing machine. As a result, the pulsator washing machine still uses the early filter collection box structure to collect lint, lint, fabric lint, and particulate pollutants.

[0005] 3. The water inlet of the filter collection device developed by the inventor in the early stage was located in the area between the inner drum and the outer drum of the washing machine. Due to market competition, the washing capacity of the inner drum has been increasing and the space between the inner and outer drums of the washing machine has become narrow, which has limited the size of the water inlet of the filter collection device and thus compressed the water flow. Although it meets the application, the more efficient filtration capacity is limited when the user chooses a quick wash. The design structure of this invention requires the user to clean the filter collection device after a certain period of use. Furthermore, the filtration and collection device developed by the inventors in the early stage could only achieve the function of filtration and collection when the inner drum rotated, allowing fluid to enter the filtration and collection device from the inlet. However, since the inner drum rotates reciprocally, it is in an intermittent state each time the rotation direction changes, and the collection and filtration function cannot be achieved at this time. As a result, the filtration and collection does not make full use of the washing time.

[0006] 4. During the washing process, laundry detergent is more effective at cleaning clothes than liquid detergent, and most users wash with cold water. Therefore, when users add laundry detergent granules into the washing machine through the water inlet, they are not completely dissolved. Furthermore, they tend to clump together when exposed to cold water. This causes the existing filtration and collection structure to accumulate, pile up, and clog more quickly when dealing with lint, yarn, fabric debris, and other contaminant particles after washing. Consequently, the filtration and collection efficiency declines rapidly, ultimately failing to provide a good user experience. Crucially, the large amount of undissolved laundry detergent particles collected during the washing process dilutes the detergent, reducing its ability to clean sweat stains and dirt from clothes.

[0007] The following derivative problems exist with existing front-loading and top-loading washing machines used by users: 1. Washing time is long. Users find that the cleaning effect is not ideal during the washing process. The simplest way is to extend the washing time. As a result, users have reported that the washing time of drum washing is longer than that of pulsator washing, which also causes inconvenience to users' life and work. 2. The wear and tear on clothing depends on the duration of cleaning, which leads to excessive soaking, washing, and rinsing of clothes with chemical detergents, thus reducing the value of washing and caring for the clothes. 3. Long-term washing and rinsing of clothes will cause unnecessary mechanical and physical wear and tear on the equipment and unnecessary consumption of the electrical control system, reducing the service life of the equipment and increasing the cost of replacement parts and maintenance. 4. Water and electricity consumption: In order to achieve the goal of cleanliness, users use delayed washing and repeatedly rinse with stored water to clean clothes, which leads to an increase in water and electricity consumption in the long run and a waste of natural resources. 5. Excessive use of chemical detergents or higher prices for detergent brands not only damages clothing due to excessive chemical application, but also reduces the rinsing and cleaning effect and ability due to excessive chemical residue. This repeatedly increases the cost of using chemical detergents and increases pollution of social water resources and the environment. 6. Accumulation of dirt and grime: Due to the inefficient filtration capacity of top-loading washing machines and the lack of a filtration structure in front-loading washing machines, the uneven and irregular structure between the inner and outer drums, such as the impeller, tripod, lifting ribs, inner drum grille, and collection box base, prolongs the time for lint and contaminants to adhere. Therefore, washing machines that have been used for many years are severely contaminated when disassembled and cleaned. 7. The growth of bacteria not only makes it easy for pollutants to adhere to the surface and cause contamination during the second washing process, but also generates a large number of bacteria, thus providing a favorable and unfavorable environment for the rapid spread of bacteria in public places such as hospitals, hotels, schools, dormitories, community laundromats, and coin-operated laundromats. 8. Increased consumables: Top-loading washing machines have poor collection capabilities, while front-loading washing machines have no collection at all. Long-term use leads to serious accumulation of dirt and bacteria inside the washing machine. Obviously, washing machines used year-round pose a serious health risk to children, women, and the elderly. Users start to buy various chemical cleaners, cleaning brushes, and disassembly tools for cleaning the washing machine drum. However, because the cleanliness of the drum is unclear and the cleaning capacity and energy efficiency cannot be tested, frequent cleaning results in significant financial expenditure for users and chemical pollution of water resources. DIY disassembly and cleaning requires users to spend a lot of time and manpower, and improper disassembly and installation may cause damage to the equipment. 9. Even when the cleaning equipment is in good working order and does not need to be replaced, the inner and outer drums of the washing machine accumulate a large amount of dirt and grime, leading to secondary pollution problems during the washing process. Furthermore, bacterial growth poses unpredictable health risks, forcing users to pay for on-site disassembly and cleaning services. The key issue is that comprehensive on-site disassembly and cleaning methods fail to achieve real-time cleaning and health protection for users.

[0008] Existing collection and filtration devices, due to the unidirectional flow of fluid, are more prone to clogging of the filter screen by lint, fuzz, textile lint, and particulate pollutants collected by the device. After the equipment has finished operating, it cannot achieve self-cleaning of the filter screen.

[0009] The drawbacks of existing filter collection structures: 1. Static adhesion makes it difficult to clean existing filter collection structures. During filtration and collection, the fluid carries the collected material to statically adhere to the filter screen surface in the chamber. As the fluid always passes through the filter screen in a directional manner, the adhesion between the collected material and the filter screen intensifies, making it difficult to clean thoroughly when the fluid is discharged. This leads to filter screen blockage. Furthermore, during equipment operation intervals, the collected material condenses on the filter screen, making it even more difficult for the collected material to self-clean. Over time, this results in cumulative filter screen blockage and eventually the failure of the filtration and collection function. 2. Obstruction of discharge and residue: When the existing filter collection structure is used to discharge and clean the collected materials, there is a problem that the discharged materials are not smooth and remain in the filter collection chamber, which leads to the formation of filter screen blockage. When the equipment is not working, the collected materials will condense on the filter screen, making it even more difficult to clean later. This will lead to the accumulation of blockage and eventually the failure of the filter collection function. 3. Lack of Impact Force and Residual Dirt: In existing filter collection structures, when fluid enters the filter collection chamber to clean the collected material, the flow rate is weak, resulting in insufficient impact force on the inner surface of the filter screen to achieve a cleaning effect. This leads to the accumulation of contaminants on the filter screen surface within the chamber, causing filter clogging. Furthermore, when the equipment is not in operation and the filter collection chamber is not wetted by fluid, the collected material adheres even more firmly to the filter screen surface, further hindering the self-cleaning process. Long-term use leads to cumulative clogging and functional failure. 4. Collecting and diluting chemical particles: Firstly, laundry detergent has a stronger chemical cleaning ability than liquid detergent, and most users wash with cold water. When laundry detergent granules are added to the washing machine drum, they do not dissolve quickly and tend to clump together with cold water. Therefore, in the incompletely dissolved state, during the filtration and collection process, due to the directional collection of fluids and the accumulation of collected materials, the incompletely dissolved laundry detergent particles are also collected into the aggregated lint, fuzz, and fabric fibers. This results in the dilution of the user's laundry detergent during the filtration and collection process, reducing the effectiveness of cleaning sweat stains and dirt on clothes. At the same time, if other chemical cleaning agents are added, such as those used to clean the dirt and grime trapped in the inner drum, the dirt and grime will be removed and collected during filtration and collection, thus achieving the simultaneous filtration and collection of dirt and grime and chemical cleaning agents. 5. Accumulated Filtration Due to the accumulation and clogging of lint, fuzz, textile lint, and particulate matter in the directional filtration system, the filtration efficiency gradually decreases. As the filter becomes increasingly clogged, the pump, which is designed to drive the fluid flow rate, experiences overload. Consequently, the pump power configuration needs to be adjusted based on the flow rate generated by the clogged filter, resulting in under-configured collection power and poor filtration efficiency. 6. Inability to Increase Filter Mesh Size: Users increasingly demand cleaner washing machines to remove lint, fuzz, and particulate matter after washing, and are concerned about the health effects of dirt and bacteria buildup inside the washing machine. Increasing filter density significantly improves filtration efficiency, but current fluid-directed filtration systems still cannot solve the problem of clogging, and achieving thorough automatic cleaning and drainage is even more difficult. Therefore, some users with limited budgets can only add a dryer to further remove lint and fuzz during the drying stage. However, this is obviously more cumbersome and costly, and the washing process still fails to effectively address dirt accumulation, bacterial growth, secondary pollution, and health concerns. Summary of the Invention

[0010] To address the aforementioned problems, this invention provides a simple-structured filtration and collection device and washing machine that ensures smooth fluid flow, enhances fluid impact on the filter screen, and prevents filter screen clogging.

[0011] The present invention provides a filtration and collection device, comprising a housing, wherein a filtration and collection chamber is provided inside the housing, and a filter screen is provided inside the filtration and collection chamber; The filter screen is a hollow filter screen, with one end face of the filter screen serving as the fluid inlet and the other end face of the filter collection screen serving as the fluid outlet. Both ends of the filter screen are sealed to the housing. The housing is provided with a first interface and a second interface, and the first interface is connected to the internal area of ​​the filter screen through a fluid inlet. The second interface is connected to the internal area of ​​the filter screen through the fluid outlet; A first pipe is fixedly connected to the first interface, and a second pipe is fixedly connected to the second interface; A return outlet is provided on the periphery of the filter screen corresponding to the position of the housing, and a return pipe is connected to the return outlet.

[0012] Preferably, a flow guide shell is fixedly connected to one end of the housing where the first interface is located, and a flow guide chamber is provided inside the flow guide shell, which is connected to the first interface; The first pipe is fixedly connected to the flow guide shell and communicates with the flow guide chamber.

[0013] Preferably, in the direction from the fluid inlet to the fluid outlet, the cross-sectional area of ​​the guide chamber is greater than or equal to the cross-sectional area of ​​the internal channel of the first interface.

[0014] Preferably, the cross-sectional area of ​​the internal channel of the first interface is greater than or equal to the cross-sectional area of ​​the fluid inlet.

[0015] Preferably, in the direction from the fluid inlet to the fluid outlet, the cross-sectional area of ​​the flow guiding chamber is greater than or equal to the cross-sectional area of ​​the collection and filtration chamber in the direction from the fluid inlet to the fluid outlet.

[0016] Preferably, one end of the flow guide shell is fixedly connected to the end of the shell where the first interface is provided, and the first pipe is connected to the circumferential surface of the flow guide shell.

[0017] Preferably, the cross-sectional area of ​​the internal channel of the first pipe is greater than or equal to the cross-sectional area of ​​the internal channel of the first interface.

[0018] Preferably, the cross-sectional area of ​​the internal channel of the second pipe is greater than or equal to the cross-sectional area of ​​the internal channel of the second interface.

[0019] Preferably, the cross-sectional area of ​​the internal channel of the first or second interface is greater than or equal to the cross-sectional area of ​​the internal channel of the filter collection chamber.

[0020] Preferably, the cross-sectional area of ​​the internal channel of the second interface is greater than or equal to the cross-sectional area of ​​the internal channel of the fluid outlet.

[0021] Preferably, the flow rate of the fluid flowing through the first interface is greater than or equal to the flow rate of the fluid flowing through the fluid inlet; or, The flow rate of the fluid flowing through the first interface is greater than or equal to the flow rate of the fluid flowing through the filter collection chamber.

[0022] A washing machine includes a washing machine shell and an outer drum. A drain pipe is connected to the outer drum. A filter collection device is fixedly installed in the area between the washing machine shell and the outer drum. The ends of the first pipe and the return pipe away from the filter screen extend into the outer drum and are connected to the internal area of ​​the outer drum. The end of the second pipe furthest from the filter screen is connected to the drain pipe, and a water pump is installed on the first or second pipe. A water pump is also installed on the return pipe.

[0023] This invention utilizes a second pipe to discharge fluid. During this process, it impacts the lint, fuzz, lint, and particulate matter adhering to the filter screen, thus cleaning the filter screen. This solves the problem in existing technologies where the collection and filtration devices do not have an impact force on the filter screen when discharging lint, fuzz, lint, and particulate matter, resulting in the residue of lint, fuzz, lint, and particulate matter. Long-term use causes the residue to accumulate and clog the filter screen, and when the equipment is not in operation, the residue dries and condenses on the filter screen, making it impossible to clean.

[0024] The present invention provides a flow guide shell at one end of the housing, and a flow guide chamber is provided inside the flow guide shell. The flow guide chamber is connected to the first interface, which helps to increase the scouring force on the inner surface of the filter screen after the fluid enters the filter screen. When the collected lint, fuzz, woven lint, and pollutant particles are discharged, it is easier to discharge the collected lint, fuzz, woven lint, and pollutant particles smoothly, and prevents the filter screen from accumulating and becoming clogged.

[0025] The cross-sectional area of ​​the flow guiding chamber of this invention is greater than or equal to the cross-sectional area of ​​the internal channel of the first interface; the cross-sectional area of ​​the internal channel of the first interface is greater than or equal to the cross-sectional area of ​​the fluid inlet, which is beneficial to achieve thorough rinsing and cleaning of the filter screen when the fluid is discharged, preventing the residue of wire shavings, lint, lint, and polluting particles from clogging the filter screen, and effectively avoiding the solidification of wire shavings, lint, lint, and polluting particles on the filter screen during equipment shutdown. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the structure of the filtration and collection device of the present invention.

[0027] Figure 2 This is an exploded view of a filter collection net according to the present invention.

[0028] Figure 3 This is an exploded schematic diagram of the filtration and collection device of the present invention.

[0029] Reference numerals: 1-shell, 2-first pipe, 3-second pipe, 4-return connector, 5-backwash connector, 6-connecting seat, 7-connecting seat body, 8-end cap, 9-ring clip, 10-rotary sealing ring, 11-filter screen, 12-drive motor, 13-guide housing. Detailed Implementation

[0030] The present invention will be described below with reference to the accompanying drawings. See Figures 1-3 As shown, the present invention provides a filtration and collection device, including a housing 1, a filtration and collection chamber inside the housing 1, and a filter screen 11 inside the filtration and collection chamber; The filter screen 11 is a hollow filter screen 11, with one end face of the filter screen 11 being the fluid inlet and the other end face of the filter collection screen being the fluid outlet; Both ends of the filter screen 11 are sealed to the housing 1. The housing 1 is provided with a first interface and a second interface. The first interface is connected to the internal area of ​​the filter screen 11 through a fluid inlet. The second interface is connected to the internal area of ​​the filter screen 11 through the fluid outlet; A first pipe 2 is fixedly connected to the first interface, and a second pipe 3 is fixedly connected to the second interface; The filter screen 11 has a return outlet on its periphery corresponding to the housing 1, and a return pipe is connected to the return outlet. The fluid is discharged through the second pipe 3. During this process, the filter screen 11 is cleaned by impacting the lint, lint, fabric lint, and pollutant particles attached to it.

[0031] In one embodiment, a flow guide housing 13 is fixedly connected to one end of the housing 1 where the first interface is provided, and a flow guide chamber is provided inside the flow guide housing 13, which is connected to the first interface; The first pipe 2 is fixedly connected to the flow guide shell 13 and communicates with the flow guide chamber. The flow guide shell 13 is provided at one end of the shell 1. The flow guide shell 13 is provided with a flow guide chamber, which is connected to the first interface. This helps to increase the scouring force on the inner surface of the filter screen 11 after the fluid enters the filter screen 11. When the collected lint, fuzz, woven lint, and pollutant particles are discharged, it is easier to discharge the collected lint, fuzz, woven lint, and pollutant particles smoothly, avoiding clogging of the filter screen 11.

[0032] In one embodiment, the cross-sectional area of ​​the flow guiding chamber is greater than or equal to the cross-sectional area of ​​the internal channel of the first interface in the direction from the fluid inlet to the fluid outlet. After the fluid in the flow guiding chamber enters the first interface, it generates an impact force on the internal channel of the collection and filtering chamber and the inner surface of the filter screen 11, thus preventing the residue of lint, fuzz, textile lint, and pollutant particles.

[0033] In one embodiment, the cross-sectional area of ​​the internal channel of the first interface is greater than or equal to the cross-sectional area of ​​the fluid inlet, which enables the collection and filtration chamber's internal channel and the inner surface of the filter screen 11 to be impacted without dead angles.

[0034] In one embodiment, the cross-sectional area of ​​the flow guiding chamber is greater than or equal to the cross-sectional area of ​​the collection and filtration chamber in the direction from the fluid inlet to the fluid outlet. This helps to prevent the fluid from entering the collection and filtration chamber and impacting the inner surface of the filter screen 11, which would then cause pressure loss and reduce the impact force of the fluid on the filter chamber and the filter screen 11.

[0035] In one embodiment, one end of the flow guide housing 13 is fixedly connected to the end of the housing 1 with the first interface, and the first pipe 2 is connected to the circumferential surface of the flow guide housing 13 to facilitate quick assembly and disassembly of the filter screen 11 and the housing 1. This allows for easy cleaning, inspection and replacement of the filter screen 11, which is convenient for removing lint, fuzz, fabric lint, and particulate matter that may have accumulated on the filter element when the filter screen 11 is no longer in use due to incomplete or incomplete removal during cleaning. This also facilitates manual cleaning, inspection and replacement of the filter element, making the product design more complete.

[0036] In one embodiment, the quick-release structure includes a connecting seat 6, which is fixedly connected to one end of the filter screen 11 via a bracket, and the connecting seat 6 is provided with external threads on its circumferential surface. The bracket is provided with flow holes, and the first pipe 2 is connected to the internal area of ​​the filter screen 11 through the flow holes; A connecting hole is provided on one end of the housing 1, and an internal thread is provided on the connecting hole. The filter screen 11 passes through the connecting hole and extends into the internal area of ​​the housing 1. The connecting seat 6 is fixedly connected to the housing 1 by the internal thread and the external thread. The connecting seat 6 includes a connecting seat body 7 and an end cap 8. The connecting seat body 7 and the end cap 8 are fixedly connected by screws. A connecting post is fixedly provided on one end of the filter screen 11 near the connecting seat body 7. The connecting post passes through a through hole on the connecting seat body 7 and is axially fixedly connected to the connecting seat body 7 by a snap ring 9. When it is necessary to install or remove the filter screen 11, rotate the connecting seat body 7. The connecting seat body 7 rotates, but the filter screen 11 does not rotate. The connecting seat body 7 is threadedly connected to the connecting hole on the housing 1, so as to realize the installation or removal of the filter screen 11 from the housing 1.

[0037] In one embodiment, the cross-sectional area of ​​the internal channel of the first pipe 2 is greater than or equal to the cross-sectional area of ​​the internal channel of the first interface.

[0038] In one embodiment, the cross-sectional area of ​​the internal channel of the second pipe 3 is greater than or equal to the cross-sectional area of ​​the internal channel of the second interface.

[0039] In one embodiment, the cross-sectional area of ​​the internal channel of the first or second interface is greater than or equal to the cross-sectional area of ​​the internal channel of the filter collection chamber.

[0040] In one embodiment, the cross-sectional area of ​​the internal channel of the second interface is greater than or equal to the cross-sectional area of ​​the internal channel of the fluid outlet.

[0041] In one embodiment, the flow rate of the fluid flowing through the first interface is greater than or equal to the flow rate of the fluid flowing through the fluid inlet; or, The flow rate of the fluid flowing through the first interface is greater than or equal to the flow rate of the fluid flowing through the filter collection chamber. This greater-than-equal flow rate of the fluid flowing through the first interface generates an impact force on the inner circumferential surface of the multi-screen filter and the inner circumferential surface of the filter collection chamber during fluid discharge. This facilitates the smooth discharge of collected lint, yarn, fabric fibers, and particulate pollutants, resulting in a more comprehensive and thorough cleaning of the filter screen 11 and the filter collection chamber, ensuring the long-term unobstructed flow of the filter screen 11.

[0042] In one embodiment, the housing 1 is also provided with a drive device that drives the filter screen 11 to rotate around the central axis of the filter screen 11.

[0043] The drive device includes a drive gear that is rotatably connected to the housing 1 via a rotating shaft. A power device for driving the drive gear to rotate is connected to the drive gear, and the power device is fixedly mounted on the housing 1. The housing 1 at both ends of the filter collection chamber is provided with an installation area. A hollow pipe is fixedly connected to the end of the filter screen 11 near the power device. The hollow pipe extends into an installation area and is rotatably and sealed to the housing 1. The other end of the filter screen 11 is rotatably and sealed to the first pipe 2 through another installation area. A driven gear ring is connected to the connecting pipe. The driven gear ring is circumferentially fixed to the connecting pipe and meshes with the driving gear. The cross-sectional area of ​​the internal channel of the connecting pipe is greater than or equal to the cross-sectional area of ​​the internal channel of the filter screen 11 at the connection between the connecting pipe and the filter screen 11.

[0044] In use, the power unit is a drive motor 12. The return pipe is connected to the housing 1 through a return connector 4. The return connector 4 is open-ended, with its small end connected to the return pipe and its large end connected to a return outlet on the housing 1. The return outlet is located on the circumference of the housing 1 and is elongated. The drive motor 12 drives the drive gear to rotate forward or in both directions. The drive gear meshes with the driven gear ring, which drives the connecting pipe to rotate, thereby causing the filter screen 11 to rotate around its central axis. Fixed rings are fixedly connected to both ends of the filter screen 11, and rotating parts are provided on the circumference of the fixed rings. The sealing ring 10 and the rotating sealing ring 10 are matched and sealed to the areas on both ends of the housing 1 for mounting the fixing rings. This allows the fluid to enter the internal area of ​​the filter screen 11 after passing through the first pipe 2 and a fixing ring, and then enter the filter collection chamber located outside the filter screen 11. The fluid then flows out through the return pipe. During this process, the filter screen 11 is always rotating, thus filtering and collecting impurities in the fluid. When the collected impurities need to be discharged, the fluid flows through the connecting pipe and is discharged from the second pipe 3. The fixing ring connects the first pipe 2 and the second pipe 3 to ensure smooth fluid flow.

[0045] The filter screen 11 is provided with a backwash port on the periphery corresponding to the housing 1. The backwash port is connected to the backwash channel through the backwash connector 5. The backwash port is slit-shaped, so as to realize the powerful flushing of the filter screen 11 and the efficient cleaning of the filter screen 11.

[0046] A washing machine includes a washing machine housing 1 and an outer drum. A drain pipe is connected to the outer drum. A filter collection device is fixedly installed in the area between the washing machine housing 1 and the outer drum. The ends of the first pipe 2 and the return pipe away from the filter screen 11 extend into the outer drum and are connected to the internal area of ​​the outer drum. The end of the second pipe 3 away from the filter screen 11 is connected to the drain pipe, and a water pump is installed on the first pipe 2 or the second pipe 3; A water pump is also installed on the return pipe.

[0047] The filter screen 11 continuously collects and filters lint, shavings, lint, and particulate contaminants from the water flow inside the outer drum, thus preventing these contaminants from accumulating on the inner and outer drums of the washing machine. This helps maintain the cleanliness of the washing machine and improves its cleaning efficiency, effectively preventing lint, shavings, lint, and particulate contaminants from clogging the filter screen 11. Furthermore, when detergent or granular cleaning agent is present in the water flow, the filter screen 11 is dissolved more quickly. As needed, the solenoid valves on the drain channel and the second pipe 3 are opened to discharge the collected lint, shavings, lint, and particulate contaminants through the drain pipe. During the fluid discharge stage, the filter screen 11 effectively cleans the inner circumference of the filter screen.

Claims

1. A filtration and collection device, comprising a housing, wherein a filtration and collection chamber is disposed within the housing, characterized in that, A filter screen is provided in the filter collection chamber; The filter screen is a hollow filter screen, with one end face of the filter screen serving as the fluid inlet and the other end face of the filter collection screen serving as the fluid outlet. Both ends of the filter screen are sealed to the housing. The housing is provided with a first interface and a second interface, and the first interface is connected to the internal area of ​​the filter screen through a fluid inlet. The second interface is connected to the internal area of ​​the filter screen through the fluid outlet; A first pipe is fixedly connected to the first interface, and a second pipe is fixedly connected to the second interface; A return outlet is provided on the periphery of the filter screen corresponding to the position of the housing, and a return pipe is connected to the return outlet.

2. The filtration and collection device as described in claim 1, characterized in that, A flow guide shell is fixedly connected to one end of the housing where the first interface is provided. A flow guide chamber is provided inside the flow guide shell and is connected to the first interface. The first pipe is fixedly connected to the flow guide shell and communicates with the flow guide chamber.

3. The filtration and collection device as described in claim 2, characterized in that, In the direction from fluid inlet to fluid outlet, the cross-sectional area of ​​the guide chamber is greater than or equal to the cross-sectional area of ​​the internal channel of the first interface.

4. The filtration and collection device as described in claim 1, characterized in that, The cross-sectional area of ​​the internal channel of the first interface is greater than or equal to the cross-sectional area of ​​the fluid inlet.

5. The filtration and collection device as described in claim 2, characterized in that, In the direction from fluid inlet to fluid outlet, the cross-sectional area of ​​the flow guiding chamber is greater than or equal to the cross-sectional area of ​​the collection and filtration chamber in the direction from fluid inlet to fluid outlet.

6. The filtration and collection device as described in claim 1, characterized in that, One end of the flow guide shell is fixedly connected to the end of the shell where the first interface is provided, and the first pipe is connected to the circumferential surface of the flow guide shell.

7. The filtration and collection device as described in claim 1, characterized in that, The cross-sectional area of ​​the internal channel of the first pipe is greater than or equal to the cross-sectional area of ​​the internal channel of the first interface.

8. The filtration and collection device as described in claim 1, characterized in that, The cross-sectional area of ​​the internal channel of the second pipe is greater than or equal to the cross-sectional area of ​​the internal channel of the second interface.

9. The filtration and collection device as described in claim 1, characterized in that, The cross-sectional area of ​​the internal channel of the first or second interface is greater than or equal to the cross-sectional area of ​​the internal channel of the filter collection chamber.

10. The filtration and collection device as described in claim 1, characterized in that, The cross-sectional area of ​​the internal channel of the second interface is greater than or equal to the cross-sectional area of ​​the internal channel of the fluid outlet.

11. The filtration and collection device as described in claim 1, characterized in that, The flow rate of the fluid flowing through the first interface is greater than or equal to the flow rate of the fluid flowing through the fluid inlet; or, The flow rate of the fluid flowing through the first interface is greater than or equal to the flow rate of the fluid flowing through the filter collection chamber.

12. A washing machine, comprising a washing machine casing and an outer tub, wherein a drain pipe is connected to the outer tub, characterized in that, A filter collection device as described in claim 1 is fixedly provided in the area between the washing machine shell and the outer drum, wherein the ends of the first pipe and the return pipe away from the filter screen extend into the outer drum and are connected to the internal area of ​​the outer drum. The end of the second pipe furthest from the filter screen is connected to the drain pipe, and a water pump is installed on the first or second pipe. A water pump is also installed on the return pipe.

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