Filtering collection net, filtering collection device and washing machine

Abstract

The utility model relates to a filter collection net, filter collection device and washing machine relate to filter collection equipment technical field, specifically relate to a filter collection net, filter collection device and washing machine, including filter screen body, the filter screen body is hollow filter screen body, one end of filter screen body is import end, the other end of filter screen body is export end, be provided with fluid flow inlet on the import end of filter screen body, be provided with fluid discharge port on the export end of filter screen body, the diameter of the circle where one end of filter screen body circumference is close to export end with the diameter of the circle where fluid discharge port is equal. The utility model has the advantages of simple structure, guarantee the smooth shape of fluid flow, strengthen fluid impact filter screen body, effectively prevent filter screen body from being blocked.

Description

Technical Field

[0001] This utility model relates to the field of filter collection equipment technology, specifically to a filter collection screen, a filter 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. Utility Model Content

[0010] To address the aforementioned problems, this utility model provides a simple structure that ensures smooth fluid flow, enhances fluid impact on the filter screen body, and prevents the filter screen body from clogging. It also includes a filter collection screen, a filter collection device, and a washing machine.

[0011] This utility model discloses a filter collection net, including a filter net body, which is a hollow filter net body. One end of the filter net body is an inlet end, and the other end of the filter net body is an outlet end. A fluid inlet is provided on the inlet end of the filter net body, and a fluid outlet is provided on the outlet end of the filter net body. The diameter of the circle containing the end of the filter screen body near the outlet is equal to the diameter of the circle containing the fluid outlet.

[0012] Preferably, the diameter of the circle containing the end of the filter screen body near the inlet is equal to the diameter of the circle containing the fluid inlet.

[0013] Preferably, the filter body is a hollow cylindrical filter body.

[0014] Preferably, the filter body is a hollow conical filter body.

[0015] Preferably, the cross-section of the filter body is polygonal.

[0016] Alternatively, preferably, the cross-sectional area of ​​the filter body near the inlet end is larger than the cross-sectional area of ​​the filter body near the outlet end.

[0017] A filter collection device includes a housing, wherein a filter collection chamber is disposed within the housing, characterized in that a filter collection screen is disposed within the filter collection chamber; Both ends of the filter collection mesh are sealed and connected to the housing. The housing is provided with a first interface and a second interface. The first interface is connected to the internal area of ​​the filter body through a fluid inlet. The second interface is connected to the internal area of ​​the filter body 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 body corresponding to the position of the housing, and a return pipe is connected to the return outlet.

[0018] 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; The cross-sectional area of ​​the internal channel of the first interface is greater than or equal to the cross-sectional area of ​​the internal channel of the filter collection chamber.

[0019] 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; 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 filter collection chamber.

[0020] 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 internal channel of the fluid inlet.

[0021] 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.

[0022] Preferably, one end face of the housing is the first interface.

[0023] Preferably, the end face of the housing furthest from the first interface is the second interface.

[0024] Preferably, a filter collection screen is connected to the housing via a quick-release structure.

[0025] Preferably, the first interface or the second interface is disposed on the circumferential surface of one end of the housing.

[0026] 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.

[0027] A washing machine includes a washing machine shell and an outer drum, wherein a drain pipe is connected to the outer drum. The washing machine shell and the outer drum are characterized in that a filter collection device is fixedly arranged in the area between the washing machine shell and the outer drum, and the ends of the first pipe and the return pipe away from the filter screen body 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 body is connected to the drain pipe.

[0028] The diameter of the circle on the periphery of the filter body near the outlet is equal to the diameter of the circle at the fluid outlet, which makes it easier for collected lint, fuzz, lint, and particulate matter to be discharged smoothly, preventing the filter body from accumulating and becoming clogged.

[0029] The diameter of the circle on the periphery of the filter screen body near the inlet is equal to the diameter of the circle where the fluid flows in. This allows for thorough rinsing and cleaning of the filter screen body without any dead angles when the fluid is discharged, preventing the residue of lint, fuzz, lint, and particulate matter from clogging the filter screen body. It also effectively prevents lint, fuzz, lint, and particulate matter collected during equipment shutdown from solidifying on the filter screen body. Attached Figure Description

[0030] Figure 1 This is a schematic diagram of the structure of the filtration and collection device of this utility model.

[0031] Figure 2 This is an exploded view of a filter collection net according to the present invention.

[0032] Figure 3 This is an exploded schematic diagram of the filtration and collection device of this utility model.

[0033] Reference numerals: 1-Housing, 2-First pipe, 3-Second pipe, 4-Return connector, 5-Backwash connector, 6-Connecting seat, 7-Connecting seat body, 8-End cap, 9-Snap ring, 10-Rotary sealing ring, 11-Filter screen body, 12-Drive motor. Detailed Implementation

[0034] The present invention will be described below with reference to the accompanying drawings.

[0035] This utility model discloses a filter collection screen, including a filter screen body 11, which is a hollow filter screen body 11. One end of the filter screen body 11 is an inlet end, and the other end is an outlet end. The inlet end of the filter screen body 11 is provided with a fluid inlet, and the outlet end of the filter screen body 11 is provided with a fluid outlet. Fluid flows out from the circumference of the filter screen body 11, thereby achieving the filtration and collection of impurities in the fluid.

[0036] The diameter of the circle containing the end of the filter body 11 near the outlet is equal to the diameter of the circle containing the fluid outlet.

[0037] When in use, fluid flows into the filter body 11 through the fluid inlet and flows out from the circumference of the filter body 11 to filter and collect impurities in the fluid. When it is necessary to discharge the impurities in the filter body 11, the fluid enters the filter body 11 directly from the fluid inlet and then exits from the fluid outlet. During this process, the impurities in the filter body 11 are discharged together with the fluid. Because the diameter of the circle containing the end of the filter screen body 11 near the outlet is equal to the diameter of the circle containing the fluid outlet, the fluid will not be obstructed or stagnant when flowing out of the filter screen body 11, ensuring smooth flow. This makes it easier to discharge the impurities collected inside the filter screen body 11, while ensuring thorough discharge of impurities. It also prevents dirt and grime from accumulating at the joints, allowing the fluid to flow smoothly out of the filter screen body 11, thus cleaning the filter screen and preventing the filter screen body 11 from becoming clogged. This avoids the phenomenon of impurities drying and sticking to the filter screen body 11 during the non-working phase, which would cause the continuous accumulation of impurities on the filter screen body 11, leading to a sharp decrease in the filtration and collection capacity of the filter screen body 11 and making it difficult to clean.

[0038] In one embodiment, the diameter of the circle containing the end of the filter body 11 near the inlet is equal to the diameter of the circle containing the fluid inlet.

[0039] In use, fluid flows into the filter body 11 through the fluid inlet and flows out from the circumference of the filter body 11 to filter and collect impurities in the fluid. When it is necessary to discharge the impurities in the filter body 11, the fluid enters the filter body 11 directly from the fluid inlet and then exits from the fluid outlet. During this process, the impurities in the filter body 11 are discharged together with the fluid. The diameter of the circle at the end of the filter screen body 11 closest to the inlet is equal to the diameter of the circle at the fluid inlet, which allows the fluid to enter the filter screen body 11 smoothly, which helps to improve the filtration and collection efficiency of the filter screen body 11, and at the same time prevents dirt and grime from accumulating at the connection.

[0040] Depending on the actual usage requirements, the filter body 11 can be configured into the following different shapes: The filter body 11 is a hollow cylindrical filter body 11; The filter body 11 is a hollow conical filter body 11; The filter body 11 has a polygonal cross-section; In one embodiment, the cross-sectional area of ​​the filter body 11 near the inlet end is larger than the cross-sectional area of ​​the filter body 11 near the outlet end. This arrangement makes it easier for the debris collected by the filter body 11 to accumulate when the filter body 11 rotates unidirectionally or bidirectionally around its central axis, thus facilitating its discharge.

[0041] A filter collection device includes a housing 1, a filter collection chamber is provided inside the housing 1, and a filter collection screen is provided inside the filter collection chamber, the filter collection screen being horizontally arranged inside the filter collection chamber. The two ends of the filter collection mesh are respectively sealed and connected 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 body 11 through a fluid inlet. The second interface is connected to the internal area of ​​the filter body 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 body 11 has a return outlet on the periphery corresponding to the housing 1, and a return pipe is connected to the return outlet.

[0042] 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; The cross-sectional area of ​​the internal channel of the first interface is greater than or equal to the cross-sectional area of ​​the internal channel of the filter collection chamber; this allows the fluid to flow into the filter body 11 and achieve thorough cleaning of the inner circumferential surface of the filter body without dead angles, which is beneficial for cleaning the inner circumferential surface of the filter body 11.

[0043] 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. 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 filter collection chamber; this allows the fluid to flush the filter screen body 11 and carry the flushed debris out of the filter screen body 11 without obstruction, avoiding debris from being retained at the discharge end of the filter screen body 11, and facilitating the smooth discharge of the debris collected by the filter screen body 11 by the fluid.

[0044] The cross-sectional area of ​​the internal channel of the first interface is greater than or equal to the cross-sectional area of ​​the internal channel of the fluid inlet. 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; this ensures that the fluid enters or flows out of the filter body 11 smoothly and without obstruction, carrying away the debris collected on the inner wall of the filter body 11.

[0045] In one embodiment, one end face of the housing 1 is the first interface.

[0046] The end face of the housing 1 away from the first interface is the second interface, ensuring the smooth flow of fluid into and out of the filter screen body 11.

[0047] A filter collection screen is connected to the housing 1 via a quick-release structure.

[0048] In one embodiment, the first or second interface near the quick-release structure is disposed on the circumferential surface of one end of the housing 1.

[0049] In one embodiment, the quick-release structure includes a connecting seat 6, which is fixedly connected to one end of the filter body 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 body 11 through the flow holes; A connecting hole is provided at one end of the housing 1, and an internal thread is provided on the connecting hole. The filter screen body 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 body 11 near the connecting seat body 7. The connecting post passes through a through hole rotatably connected to 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 body 11, rotate the connecting seat body 7. The connecting seat body 7 rotates, but the filter body 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 body 11 from the housing 1.

[0050] In one embodiment, the filter body 11 is fixedly disposed in the filter collection chamber.

[0051] In one embodiment, the housing 1 is further provided with a drive device that drives the filter screen body 11 to rotate around the central axis of the filter screen body 11.

[0052] 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 body 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 body 11 is rotatably and sealed to the first pipe 2 through another installation area. A driven gear ring is connected to the connector, and the driven gear ring is fixedly connected to the connector circumferentially. The driven gear ring is meshed with the driving gear. The cross-sectional area of ​​the internal channel of the connector is greater than or equal to the cross-sectional area of ​​the internal channel of the filter body 11 at the connection between the connector and the filter body 11.

[0053] 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 the 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 body 11 to rotate around its central axis. Fixed rings are fixedly connected to both ends of the filter screen body 11, and rotating bead seals are provided on the circumference of the fixed rings. The sealing ring 10, a rotary sealing ring 10, matches and seals with the areas on both ends of the housing 1 where mounting and fixing rings are provided. This allows the fluid to enter the internal area of ​​the filter body 11 after passing through the first pipe 2 and a fixing ring, and then enter the filter collection chamber located outside the filter body 11. After passing through the filter body 11, the fluid flows out through the return pipe. During this process, the filter body 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.

[0054] The filter screen body 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 direct and powerful flushing of the filter screen body 11 and the efficient cleaning of the filter screen body 11.

[0055] 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. When the fluid is discharged, it is used to generate an impact force on the inner circumferential surface of the multi-filter body 11 and the inner circumferential surface of the filter collection chamber. This is more conducive to the smooth discharge of collected lint, shavings, fibrous materials, and particulate pollutants, and to a more comprehensive and thorough cleaning of the filter body 11 and the filter collection chamber, ensuring the long-term unobstructed flow of the filter body 11.

[0056] In one embodiment, a washing machine includes a washing machine housing and an outer drum, a drain pipe is connected to the outer drum, and a filter collection device is fixedly disposed in the area between the washing machine housing and the outer drum. The first pipe 2 and the return pipe extend into the outer drum at the ends away from the filter screen body 11 and are connected to the internal area of ​​the outer drum. The end of the second pipe 3 furthest from the filter screen body 11 is connected to a drain pipe. A water pump is installed on either the first pipe 2 or the second pipe 3. A water pump is also installed on the return pipe.

[0057] A filtration and collection device is used to continuously collect and filter lint, shavings, lint, and particulate contaminants from the water flow inside the outer drum. This prevents lint, shavings, lint, and particulate contaminants from accumulating on the inner and outer drums of the washing machine, thus maintaining the cleanliness of the washing machine and improving its cleaning efficiency. It effectively prevents lint, shavings, lint, and particulate contaminants from clogging the filter screen body 11. Furthermore, when there is detergent or granular detergent in the water flow, it accelerates the dissolution of the detergent or granular detergent. As needed, the solenoid valve on the drain channel and the second pipe 3 is opened to discharge the collected lint, shavings, lint, and particulate contaminants through the drain pipe. During the fluid discharge stage, it effectively cleans the lint, shavings, lint, and particulate contaminants adhering to the inner circumference of the filter screen.

Claims

1. A filter collection screen, comprising a filter screen body, characterized in that, The filter body is a hollow filter body, with one end of the filter body being the inlet end and the other end being the outlet end. The inlet end of the filter body is provided with a fluid inlet, and the outlet end of the filter body is provided with a fluid outlet. The diameter of the circle containing the end of the filter screen body near the outlet is equal to the diameter of the circle containing the fluid outlet.

2. The filter collection mesh as described in claim 1, characterized in that, The diameter of the circle on the circumference of the filter body near the inlet is equal to the diameter of the circle where the fluid inlet is located.

3. The filter collection mesh as described in claim 1, characterized in that, The filter body is a hollow cylindrical filter body.

4. The filter collection mesh as described in claim 1, characterized in that, The filter body is a hollow conical filter body and / or the cross-section of the filter body is polygonal.

5. The filter collection mesh as described in claim 1, characterized in that, The cross-sectional area of ​​the filter body near the inlet is larger than the cross-sectional area of ​​the filter body near the outlet.

6. A filter collection device, comprising a housing, wherein a filter collection chamber is disposed within the housing, characterized in that, The filter collection chamber is provided with a filter collection screen as described in any one of claims 1-5; Both ends of the filter collection mesh are sealed and connected to the housing. The housing is provided with a first interface and a second interface. The first interface is connected to the internal area of ​​the filter body through a fluid inlet. The second interface is connected to the internal area of ​​the filter body 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 body corresponding to the position of the housing, and a return pipe is connected to the return outlet.

7. The filtration and collection device as described in claim 6, 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; The cross-sectional area of ​​the internal channel of the first interface is greater than or equal to the cross-sectional area of ​​the internal channel of the filter collection chamber.

8. The filter collection device as described in claim 6, 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; 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 filter collection chamber.

9. The filtration and collection device as described in claim 6, 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 internal channel of the fluid inlet.

10. The filtration and collection device as described in claim 6, 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 filter collection device as described in claim 6, characterized in that, One end face of the housing is the first interface.

12. The filter collection device as described in claim 6, characterized in that, The end face of the housing furthest from the first interface is the second interface.

13. The filter collection device as described in claim 6, characterized in that, The first interface or the second interface is disposed on the circumferential surface of one end of the housing.

14. The filter collection device as described in claim 6, 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.

15. 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 6 is fixedly provided in the area between the washing machine shell and the outer drum, wherein the end of the first pipe and the return pipe away from the filter screen body extends into the outer drum and is connected to the internal area of ​​the outer drum. The end of the second pipe furthest from the filter screen body is connected to the drain pipe.

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