Filtering device and washing machine

Abstract

The invention relates to the technical field of clothes treatment, in particular to a filtering device and a washing machine, and aims to solve the problem that dirt accumulated in an existing filtering device cannot be automatically cleaned. For this purpose, the filtering device of the present invention comprises: a housing provided with a first through hole, a second through hole, a third through hole and a fourth through hole; at least part of the first water inlet pipe is located in the shell, and a fifth through hole is formed in the side wall of the first water inlet pipe; one end of the first joint is communicated with the fifth through hole, and the other end is provided with a downward opening; the filter element is propped against the first water inlet pipe and the shell; the ring valve is arranged in the shell and sleeves the first water inlet pipe; the ring valve is connected to the shell and the first water inlet pipe in a sliding manner; the filtering device is constructed in a manner that the fourth through hole and the fifth through hole are communicated outside the shell, and the fourth through hole and the third through hole are selectively blocked. By means of the arrangement mode, the ring valve is opened through shock waves of the water hammer effect, the water flow direction is switched, and self-cleaning of the filtering device is achieved.

Description

Technical Field

[0001] The present invention relates to the technical field of clothing processing, and in particular provides a filtering device and a washing machine. Background Art

[0002] Laundry treatment equipment refers to a variety of devices and machines used to clean, dry, and process laundry. These machines are used in domestic, commercial, and industrial settings to improve the efficiency and quality of laundry. Compared to manual washing, laundry treatment machines can complete the task more quickly, significantly reducing the time and labor required for users to process laundry.

[0003] As a core component of laundry processing equipment, washing machines provide users with efficient and convenient laundry processing solutions. A crucial component of washing machines is the filter, which primarily filters impurities and dirt from the wash water. This is particularly true in areas with poor tap water quality, such as rural areas. This prevents impurities from entering the washing machine's drainage system or washing machine components, protecting the internal components from impurities and dirt while improving washing results.

[0004] However, if the filter is not cleaned for a long time, dirt and impurities will accumulate in it, which will affect the quality of the wash water and may also cause the water to deteriorate, making the washing machine unable to effectively clean clothes and even causing clothes to be contaminated. Existing filter devices do not have a self-cleaning function, requiring users to frequently manually clean the dirt and impurities in the filter, which increases the user's operational burden and poor user experience.

[0005] Accordingly, the art needs a new filtering device and washing machine to solve the above problems. Summary of the Invention

[0006] The present invention aims to solve the above technical problem, that is, to solve the problem that the dirt accumulated in the existing filtering device cannot be automatically cleaned.

[0007] In a first aspect, the present invention provides a filtering device. The filtering device comprises:

[0008] The housing is provided with a first through hole, a second through hole, a third through hole and a fourth through hole;

[0009] a first water inlet pipe passing through the first through hole, at least a portion of the first water inlet pipe being located within the housing, and a fifth through hole being formed on a side wall of the first water inlet pipe;

[0010] a first connector connected to the first water inlet pipe, wherein one end of the first connector is connected to the fifth through hole, and the other end is disposed in the first water inlet pipe and has a downward opening;

[0011] A filter element is disposed in the housing, the filter element abutting against the first water inlet pipe and the housing; the second through hole and the fifth through hole are disposed above the filter element, and the third through hole and the fourth through hole are disposed below the filter element;

[0012] a ring valve, disposed in the housing and sleeved on the first water inlet pipe, the ring valve being slidably connected to the housing and the first water inlet pipe;

[0013] The filtering device is constructed so that the fourth through hole and the fifth through hole are connected outside the housing, and selectively blocks the fourth through hole and the third through hole.

[0014] In a specific embodiment of the above-mentioned filtering device, water flows from the first water inlet pipe into the shell and flows through the filter element. The downward opening of the first joint forms a negative pressure to block the fourth through hole and open the third through hole. The water flowing out of the filter element is discharged to the outside of the shell through the third through hole to achieve filtration of the water by the filter element.

[0015] In a specific embodiment of the above-mentioned filtering device, when the filter element is blocked, the downward opening of the first joint is converted from negative pressure to positive pressure to open the fourth through hole and block the third through hole. The water at the bottom of the shell flows through the filter element and flows toward the top of the shell to fall off impurities attached to the outside of the filter element. The sewage containing impurities is discharged to the outside of the shell through the second through hole to achieve self-cleaning of the filter element.

[0016] In a specific embodiment of the above-mentioned filtering device, the shell includes a first shell, a second shell and a third shell, the first shell and the third shell are both connected to the second shell, the first shell is provided with the first through hole and the second through hole, the third shell is provided with the third through hole and the fourth through hole, the filter element is arranged in the first shell and the second shell and abuts against the second shell and the first water inlet pipe, at least part of the first water inlet pipe and the ring valve are both arranged in the first shell.

[0017] In a specific embodiment of the above-mentioned filtering device, the filter element includes a filter housing, a flange and a flow guide member, the filter housing and the flow guide member are both connected to the flange, the filter housing has openings at the upper and lower ends and a plurality of first water-permeable holes are opened on the side wall, the filter housing is passed through the flange, the flange abuts against the second outer shell, and the flow guide member is arranged in the second outer shell.

[0018] In a specific embodiment of the above-mentioned filter device, the filter element further includes a water guide cap, which is arranged at the top of the filter housing to block the opening at the top of the filter housing, and the water guide cap is located in the first water inlet pipe.

[0019] In a specific embodiment of the above-mentioned filtering device, the filter element also includes a plurality of reinforcing ribs, each of which is arranged on the outer wall of the filter shell, the first water inlet pipe and the ring valve are both in contact with the top end of each reinforcing rib, and the bottom end of each reinforcing rib is connected to the flange.

[0020] In a specific embodiment of the above-mentioned filtering device, the ring valve has a coaxial and connected sixth through hole and a seventh through hole, the aperture of the seventh through hole is larger than the aperture of the sixth through hole, the seventh through hole is arranged below the sixth through hole, and at least part of the first water inlet pipe is located in the sixth through hole and the seventh through hole.

[0021] In a specific embodiment of the above-mentioned filtering device, a first groove is formed on the outer peripheral wall of the ring valve along the circumference of the ring valve, and the ring valve is further provided with a plurality of second water-permeable holes so that the first groove is connected to the seventh through hole.

[0022] In a specific embodiment of the above-mentioned filtering device, the outer peripheral wall of the ring valve is further provided with a second groove along the circumference of the ring valve, and the inner side wall of the ring valve located at the sixth through hole is provided with a third groove along the circumference of the ring valve.

[0023] In a specific embodiment of the above-mentioned filter device, the filter device further includes a plate valve disposed in the housing, and the plate valve is configured to selectively block the fourth through hole and the third through hole.

[0024] In a specific embodiment of the above-mentioned filtering device, the filtering device also includes an elastic member arranged in the shell, the top end of the elastic member is connected to the shell, the bottom end of the elastic member is connected to the ring valve, and the elastic member is constructed so that when the elastic member is not compressed, the second through hole is not connected to the first groove.

[0025] In a second aspect, the present invention provides a washing machine. The washing machine includes the filtering device described in the first aspect;

[0026] a housing, wherein the filter device is disposed within the housing;

[0027] a second water inlet pipe, disposed outside the housing and connected to the housing and the first water inlet pipe of the filter device;

[0028] a water purification pipe, the water purification pipe being connected to the housing of the filtering device corresponding to the third through hole, and the water purification pipe being disposed in the housing;

[0029] a sewage pipe, the sewage pipe being connected to the housing of the filtering device corresponding to the second through hole, and at least a portion of the sewage pipe being disposed within the housing;

[0030] A drainage pipe is arranged outside the casing, and one end of the sewage pipe away from the filtering device is passed through the casing and connected to the drainage pipe.

[0031] Solution 1. A filtering device, characterized in that the filtering device comprises:

[0032] The housing is provided with a first through hole, a second through hole, a third through hole and a fourth through hole;

[0033] a first water inlet pipe passing through the first through hole, at least a portion of the first water inlet pipe being located within the housing, and a fifth through hole being formed on a side wall of the first water inlet pipe;

[0034] a first connector connected to the first water inlet pipe, wherein one end of the first connector is connected to the fifth through hole, and the other end is disposed in the first water inlet pipe and has a downward opening;

[0035] a filter element disposed in the housing, the filter element being in contact with the first water inlet pipe and the housing;

[0036] a ring valve, disposed in the housing and sleeved on the first water inlet pipe, the ring valve being slidably connected to the housing and the first water inlet pipe;

[0037] The second through hole and the fifth through hole are arranged above the filter element, and the third through hole and the fourth through hole are arranged below the filter element. The filtering device is constructed so that the fourth through hole and the fifth through hole are connected outside the shell, and the fourth through hole and the third through hole are selectively blocked to achieve filtering or self-cleaning of the filter element.

[0038] Option 2. The filtering device according to Option 1 is characterized in that water flows from the first water inlet pipe into the shell and flows through the filter element, the ring valve slides to below the second through hole, the ring valve is not connected to the second through hole, and the downward opening of the first joint forms a negative pressure to block the fourth through hole and open the third through hole. The water flowing out of the filter element is discharged to the outside of the shell through the third through hole to achieve filtration of the water by the filter element.

[0039] Option 3. The filtering device according to Option 1 is characterized in that when the filter element is blocked, the downward opening of the first joint is converted from negative pressure to positive pressure to open the fourth through hole and block the third through hole. The water at the bottom of the shell flows through the filter element and flows toward the top of the shell to remove impurities attached to the outside of the filter element. The ring valve moves upward and is connected to the second through hole. The sewage containing impurities is discharged to the outside of the shell through the ring valve and the second through hole to achieve self-cleaning of the filter element.

[0040] Solution 4. The filtering device according to Solution 1 is characterized in that the shell includes a first shell, a second shell and a third shell, the first shell and the third shell are both connected to the second shell, the first shell is provided with the first through hole and the second through hole, the third shell is provided with the third through hole and the fourth through hole, the filter element is arranged in the first shell and the second shell and abuts against the second shell and the first water inlet pipe, and at least part of the first water inlet pipe and the ring valve are both arranged in the first shell.

[0041] Solution 5. The filtering device according to Solution 4 is characterized in that the filter element includes a filter housing, a flange and a flow guide, the filter housing and the flow guide are both connected to the flange, the filter housing has openings at the upper and lower ends and a plurality of first water-permeable holes are opened on the side wall, the filter housing is passed through the flange, the flange abuts against the second outer shell, and the flow guide is arranged in the second outer shell.

[0042] Solution 6. The filtering device according to Solution 5 is characterized in that the filter element further includes a water guide cap, which is arranged at the top of the filter housing to seal the opening at the top of the filter housing, and the water guide cap is located in the first water inlet pipe.

[0043] Option 7. The filtering device according to Option 6 is characterized in that the filter element also includes a plurality of reinforcing ribs, each of which is arranged on the outer wall of the filter shell, the first water inlet pipe and the ring valve are both in contact with the top end of each reinforcing rib, and the bottom end of each reinforcing rib is connected to the flange.

[0044] Solution 8. The filtering device according to Solution 1 is characterized in that the ring valve has a coaxial and connected sixth through hole and a seventh through hole, the aperture of the seventh through hole is larger than the aperture of the sixth through hole, the seventh through hole is arranged below the sixth through hole, and at least part of the first water inlet pipe is located in the sixth through hole and the seventh through hole.

[0045] Solution 9. The filtering device according to Solution 8 is characterized in that the outer peripheral wall of the ring valve is provided with a first groove along the circumference of the ring valve, and the ring valve is also provided with a plurality of second water-permeable holes so that the first groove is connected to the seventh through hole.

[0046] Solution 10. The filtering device according to Solution 9 is characterized in that the outer wall of the ring valve is further provided with a second groove along the circumference of the ring valve, and the inner wall of the ring valve located at the sixth through hole is provided with a third groove along the circumference of the ring valve.

[0047] Solution 11. The filter device according to any one of Solutions 1 to 10 is characterized in that the filter device further includes a plate valve arranged in the shell, and the plate valve is constructed to selectively block the fourth through hole and the third through hole.

[0048] Solution 12. The filtering device according to any one of Solutions 9 to 10 is characterized in that the filtering device also includes an elastic member arranged in the shell, the top end of the elastic member is connected to the shell, and the bottom end of the elastic member is connected to the ring valve, and the elastic member is constructed so that when the elastic member is not compressed, the second through hole is not connected to the first groove.

[0049] Solution 13. A washing machine, comprising the filter device according to any one of Solutions 1 to 12 above;

[0050] a housing, wherein the filter device is disposed within the housing;

[0051] a second water inlet pipe, disposed outside the housing and connected to the housing and the first water inlet pipe of the filter device;

[0052] a water purification pipe, connected to the housing of the filtering device corresponding to the third through hole, the water purification pipe being disposed in the housing;

[0053] a sewage pipe connected to the housing of the filtering device corresponding to the second through hole, wherein at least a portion of the sewage pipe is disposed within the housing;

[0054] A drainage pipe is arranged outside the casing, and one end of the sewage pipe away from the filtering device is passed through the casing and connected to the drainage pipe.

[0055] When adopting the above technical solution, the present invention connects the fourth through hole and the fifth through hole constructed as the shell outside the shell. When the filter element is in the filtering state, the fourth through hole is selectively blocked and the third through hole is opened. At the same time, the liquid (for example, washing water) flowing in the first water inlet pipe forms a negative pressure at the downward opening of the first joint, thereby further enhancing the sealing effect of blocking the fourth through hole, and enabling the washing water entering the shell from the first water inlet pipe to be filtered through the filter element, and the clean water obtained after filtration is discharged from the shell through the third through hole.

[0056] When the above technical solution is adopted, the present invention connects the fourth through hole and the fifth through hole constructed as the shell outside the shell. When the filter element is in a blocked state, the water flow entering from the first water inlet pipe is difficult to pass through the filter element, resulting in a decrease in the liquid flow rate in the first water inlet pipe and an increase in the pressure in the first water inlet pipe, thereby converting the negative pressure formed at the downward opening of the first joint into a positive pressure. At the same time, the pressure inside the shell at the third through hole decreases due to the decrease in liquid flow rate, thereby enabling the filter device to selectively block the third through hole and open the fourth through hole. In this case, the pressure inside the shell at the fourth through hole can be suddenly increased, thereby generating a water hammer effect. The shock wave generated by the water hammer effect can quickly propagate from bottom to top in the shell, causing the pressure inside the shell to fluctuate violently. The shock wave penetrates the filter element, causing the filter element to vibrate, thereby helping to break up and remove impurities and dirt attached to the surface of the filter element. Finally, the impurities and dirt that fall off are discharged from the shell along with the water flow through the second through hole of the shell, thereby removing the pollutants on the filter element, realizing self-cleaning of the filter device, and automatically restoring the filtering performance of the filter device. BRIEF DESCRIPTION OF THE DRAWINGS

[0057] The preferred embodiments of the present invention are described below with reference to the accompanying drawings, in which:

[0058] Figure 1 It is a partial structural schematic diagram of the filtering device provided by the present invention in a filtering state;

[0059] Figure 2 It is a partial structural schematic diagram of the filter device provided by the present invention in a clean dirt state;

[0060] Figure 3 It is a partial structural schematic diagram of the filter element of the filter device provided by the present invention;

[0061] Figure 4 It is a partial structural diagram of the ring valve of the filtering device provided by the present invention;

[0062] Figure 5 It is a partial structural schematic diagram of the washing machine provided by the present invention.

[0063] In the picture:

[0064] 10. Housing; 10a. First through hole; 10b. Second through hole; 10c. Third through hole; 10d. Fourth through hole; 101. First outer shell; 102. Second outer shell; 103. Third outer shell;

[0065] 20, first water inlet pipe; 20a, fifth through hole; 20b, convex portion;

[0066] 30. First joint;

[0067] 40, filter element; 40a, first water permeable hole; 401, filter housing; 402, flange; 403, flow guide; 404, water guide cap; 405, reinforcing rib; 406, sealing gasket;

[0068] 50, ring valve; 50a, sixth through hole; 50b, seventh through hole; 50c, first groove; 50d, second water permeable hole; 50e, second groove; 50f, third groove;

[0069] 60. Plate valve; 61. Valve disc; 62. Articulated shaft;

[0070] 70. Elastic parts;

[0071] 80. Connecting pipe;

[0072] 90, second connector;

[0073] 100, third joint;

[0074] 110, fourth joint;

[0075] 600, filtration device;

[0076] 710, housing;

[0077] 720, second water inlet pipe;

[0078] 730, water purification pipe;

[0079] 740, sewage pipe;

[0080] 750, drainage pipe;

[0081] 760, solenoid valve;

[0082] 700. Washing machine. DETAILED DESCRIPTION

[0083] It should be noted that, in the description of the present invention, terms such as "upper," "lower," "left," "right," "inner," and "outer" indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings. These are used solely for ease of description and are not intended to indicate or imply that the relevant devices or components must have, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on the present invention. Furthermore, ordinal numbers such as "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0084] Furthermore, it should be noted that, in the description of the present invention, unless otherwise expressly specified or limited, the terms "mounted" and "connected" should be understood in a broad sense. For example, they may refer to fixed, detachable, or integral connections; mechanical or electrical connections; and direct or indirect connections through an intermediary. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0085] Installing a filter in a laundry treatment machine can remove impurities from the wash water, reducing cross-contamination between clothes during the wash process and improving cleaning efficiency. The filter can also intercept small objects and impurities, reducing damage to clothes during the wash process. This is especially true for delicate and fragile clothes, helping them maintain their original condition.

[0086] Over time, filters can become clogged due to the accumulation of impurities, leading to decreased filtration efficiency. This not only affects the filtration effect but can also reduce flow and pressure. However, existing filter devices require manual cleaning or replacement of filter media when clogged. This process is not only time-consuming and labor-intensive but can also require specialized tools and skills, placing an additional burden on the average user. To this end, the present invention provides a filter device that addresses the aforementioned technical issues.

[0087] like Figure 1 and Figure 2 As shown, the present invention provides a filter device 600. The filter device 600 includes a housing 10, a first water inlet pipe 20, a first connector 30, a filter element 40 and a ring valve 50.

[0088] The housing 10 defines a first through hole 10a, a second through hole 10b, a third through hole 10c, and a fourth through hole 10d.

[0089] The first water inlet pipe 20 is passed through the first through hole 10a. At least a portion of the first water inlet pipe 20 is located inside the housing 10. A fifth through hole 20a is formed on the side wall of the first water inlet pipe 20.

[0090] The first connector 30 is connected to the first water inlet pipe 20. One end of the first connector 30 is connected to the fifth through hole 20a, and the other end is disposed in the first water inlet pipe 20 and has a downward opening.

[0091] The filter element 40 is disposed in the housing 10 and abuts against the first water inlet pipe 20 and the housing 10 ; the second through hole 10 b and the fifth through hole 20 a are disposed above the filter element 40 , and the third through hole 10 c and the fourth through hole 10 d are disposed below the filter element 40 ;

[0092] The ring valve 50 is disposed in the housing 10 and sleeved on the first water inlet pipe 20 . The ring valve 50 is slidably connected to the housing 10 and the first water inlet pipe 20 .

[0093] The filter device 600 is constructed such that the fourth through hole 10d and the fifth through hole 20a are connected outside the housing 10, and the fourth through hole 10d and the third through hole 10c are selectively blocked.

[0094] In this embodiment, the fourth through hole 10d and the fifth through hole 20a of the shell 10 are connected outside the shell 10. When the filter element 40 is in the filtering state, the fourth through hole 10d is selectively blocked and the third through hole 10c is opened. At the same time, the liquid (for example, washing water) flowing in the first water inlet pipe 20 forms a negative pressure at the downward opening of the first joint 30, thereby further enhancing the sealing effect of blocking the fourth through hole 10d, and enabling the washing water entering the shell 10 from the first water inlet pipe 20 to be filtered through the filter element 40, and the clean water obtained after filtration is discharged from the shell 10 through the third through hole 10c.

[0095] In this embodiment, the fourth through hole 10d and the fifth through hole 20a of the housing 10 are connected outside the housing 10. When the filter element 40 is blocked, the water entering from the first water inlet pipe 20 has difficulty passing through the filter element 40, resulting in a decrease in the liquid flow rate in the first water inlet pipe 20 and an increase in the pressure in the first water inlet pipe 20, thereby converting the negative pressure formed at the downward opening of the first joint 30 into a positive pressure. At the same time, the liquid flow rate and pressure inside the housing 10 at the third through hole 10c are reduced due to the blockage of the filter element 40, so that the filter device 600 can selectively block the third through hole 10c and open the fourth through hole 10d. In this case, the pressure inside the housing 10 at the fourth through hole 10d can rise sharply, thereby generating a water hammer effect. The shock wave generated by the water hammer effect can quickly propagate from bottom to top within the housing 10, causing the pressure inside the housing 10 to fluctuate violently. The shock wave passes through the filter element 40, thereby causing the filter element 40 to vibrate, and when the water flow stops instantaneously, it helps to break up and remove the impurities and dirt attached to the surface of the filter element 40. The shock wave generated by the water hammer effect also causes the ring valve 50 to move upward to open the second through hole 10b. After the high-pressure water generated by the water hammer reaches the outlet, it will form a water flow carrying the fallen impurities and dirt to be discharged from the shell 10 through the second through hole 10b of the shell 10, thereby removing the pollutants on the filter element 40, realizing the self-cleaning of the filter device 600, and being able to automatically restore the filtering performance of the filter device 600.

[0096] In one possible implementation, Figure 1 As shown, the first through hole 10a, the second through hole 10b, the third through hole 10c, the fourth through hole 10d opened on the shell 10 and the fifth through hole 20a opened on the side wall of the first water inlet pipe 20 are all circular holes or elliptical holes.

[0097] It should be noted that the first joint 30 has a downward opening, which means that as long as the direction of the opening is not horizontal or upward, it can be regarded as the opening being downward.

[0098] In one possible implementation, Figure 1 See also Figure 2 , the first joint 30 has an opening facing vertically downward or obliquely downward.

[0099] In some examples, such as Figure 1 See also Figure 2 , the first joint 30 has an opening facing vertically downward.

[0100] For example, Figure 1 See also Figure 2 The first joint 30 has an opening facing vertically downward, and along the vertical direction, the opening is located below the lowermost edge of the fifth through hole 20a.

[0101] In one possible implementation, Figure 1 See also Figure 2 The third through hole 10c and the fourth through hole 10d of the housing 10 are arranged substantially opposite to each other. The filter device 600 may further include a second connector 90 (see Figure 2 ), the third connector 100 (see Figure 2 ) and the fourth connector 110 (see Figure 2 The second connector 90 is connected to the housing 10 of the filter device 600 via the second through hole 10b. The third connector 100 is connected to the housing 10 of the filter device 600 via the third through hole 10c. The fourth connector 110 is connected to the housing 10 of the filter device 600 via the fourth through hole 10d. The third connector 100 has an opening angled downward at one end located within the housing 10, and the fourth connector 110 has an opening angled upward at one end located within the housing 10.

[0102] For some examples, see Figure 2 , along the vertical direction, the opening of the fourth joint 110 is located above the opening of the third joint 100 .

[0103] For some examples, see Figure 2 , see also Figure 1 The third joint 100 and the fourth joint 110 can be bonded to the filter device 600 (see Figure 1 ) of the housing 10 (see Figure 1 ), the second connector 90 can be integrally formed with the housing 10 of the filter device 600 .

[0104] In one possible implementation, Figure 1 See also Figure 2 The filter device 600 may further include a connecting pipe 80. The connecting pipe 80 is disposed outside the housing 10. The connecting pipe 80 is used to connect the fourth through hole 10d and the fifth through hole 20a.

[0105] Further, if Figure 1 and Figure 2 As shown, the shell 10 may include a first shell 101, a second shell 102 and a third shell 103. The first shell 101 and the third shell 103 are both connected to the second shell 102. The first shell 101 is provided with a first through hole 10a and a second through hole 10b. The third shell 103 is provided with a third through hole 10c and a fourth through hole 10d. The filter element 40 is arranged in the first shell 101 and the second shell 102 and abuts against the second shell 102 and the first water inlet pipe 20. At least part of the first water inlet pipe 20 and the ring valve 50 are both arranged in the first shell 101.

[0106] In this embodiment, the inner cavities of the first housing 101, the second housing 102, and the third housing 103 are interconnected, collectively forming the inner cavity of the housing 10, which can be used to accommodate wash water. The filter element 40 abuts the second housing 102 and the first water inlet pipe 20 to limit the position of the filter element 40 and enhance the stability of the filter element 40 within the inner cavity of the first housing 101, thereby ensuring that it does not shift or loosen during the filtration or cleaning process, thereby maintaining the correct position of the filter element 40 and effectively filtering the water.

[0107] In one possible implementation, Figure 1 As shown, the bottom end of the filter element 40 abuts against the second housing 102 , and the bottom end of the ring valve 50 and the bottom end of the first water inlet pipe 20 both abut against the top end of the filter element 40 .

[0108] like Figure 1 As shown, there is a gap between the filter element 40 and the inner wall of the first housing 101 . This arrangement helps to reduce the difficulty of assembling the filter element 40 in the first housing 101 .

[0109] In one possible implementation, Figure 1 As shown, the bottom outer wall of the first housing 101 is provided with a first external thread (not shown in the figure), and the top inner wall of the second housing 102 is provided with a first internal thread (not shown in the figure), and the first external thread and the first internal thread cooperate with each other to enable the second housing 102 to be screwed to the first housing 101. The bottom outer wall of the second housing 102 is provided with a second external thread (not shown in the figure), and the top inner wall of the third housing 103 is provided with a second internal thread (not shown in the figure), and the second external thread and the second internal thread cooperate with each other to enable the third housing 103 to be screwed to the second housing 102, thereby facilitating a sealed connection between the first housing 101 and the third housing 103 and the second housing 102, respectively.

[0110] Further, if Figure 3 See also Figure 1 The filter element 40 may include a filter housing 401, a flange 402 and a flow guide 403. The filter housing 401 and the flow guide 403 are both connected to the flange 402. The filter housing 401 has openings at both ends and a plurality of first water-permeable holes 40a are opened on the side wall. The filter housing 401 is passed through the flange 402, and the flange 402 abuts against the second housing 102 (see Figure 1 ), the guide member 403 is disposed in the second shell 102.

[0111] In this embodiment, the provision of multiple first permeable holes 40a ensures that water enters the filter housing 401 from multiple directions, increasing the surface area of ​​contact between the water and the filter housing 401, improving filtration performance, and effectively removing impurities and particles from the water. Furthermore, the provision of multiple first permeable holes 40a more evenly distributes impurities across the surface of the filter housing 401, preventing localized concentration of impurities and reducing excessive load on certain areas of the filter housing 401, thereby extending the automatic cleaning cycle of the filter housing 401.

[0112] like Figure 3 See also Figure 1 , the flange 402 abuts against the second housing 102 (see Figure 1 ), which can effectively increase the contact area between the flange 402 and the second housing 102, thereby facilitating the improvement of the filter element 40 in the first housing 101 (see Figure 1 ) and the second housing 102 (see Figure 1 The flow guide 403 can guide the water flow along the designed path through the filter element 40, and can also position and limit the filter element 40 to ensure that the filter element 40 is correctly positioned and fixed in the first housing 101 and the second housing 102 during installation and use.

[0113] In one possible implementation, Figure 3 See also Figure 1 The guide member 403 of the filter element 40 and the second housing 102 (see Figure 1 ) has a gap between the inner walls.

[0114] Further, if Figure 3 See also Figure 1 The filter element 40 may further include a water guide cap 404, which is disposed at the top of the filter housing 401 to block the opening at the top of the filter housing 401. The water guide cap 404 is located at the first water inlet pipe 20 (see Figure 1 )Inside.

[0115] In this embodiment, the water guide cap 404 blocks the opening at the top of the filter housing 401, which can effectively prevent the water flow carrying impurities from directly impacting the top of the filter housing 401 and directly entering the interior of the filter housing 401, so as to keep the opening at the top of the filter housing 401 clean and unobstructed. In addition, the water guide cap 404 can also reduce the flow resistance of water and extend the automatic cleaning cycle of the filter element 40.

[0116] In one possible implementation, Figure 3 As shown, the water guide cap 404 of the filter element 40 is a non-porous structure with a smooth surface. Compared with the structure with filter holes (not shown in the figure), it can prevent the impurities from entering the filter holes (not shown in the figure) due to direct impact of water flow and being blocked more tightly, so that they cannot be eliminated by automatic cleaning.

[0117] Further, if Figure 3 See also Figure 1 and Figure 2 The filter element 40 may further include a plurality of reinforcing ribs 405, each of which is disposed on the outer side wall of the filter housing 401. The first water inlet pipe 20 (see Figure 1 ) and the ring valve 50 (see Figure 2 ) are in contact with the top end of each reinforcing rib 405, and the bottom end of each reinforcing rib 405 is connected to the flange 402.

[0118] In this embodiment, the provision of reinforcing ribs 405 effectively enhances the structural strength of filter housing 401, enabling it to withstand greater pressure and load, thereby improving the stability and durability of filter housing 401. Furthermore, the provision of reinforcing ribs 405 further enhances the structural stability and strength of filter housing 401, reducing the likelihood of deformation or damage to filter housing 401 during use. The provision of reinforcing ribs 405 is primarily intended to improve sealing performance and prevent unfiltered water from entering the washing machine.

[0119] In one possible implementation, Figure 3 As shown, along the circumference of the filter housing 401, the outer wall of the filter housing 401 is evenly provided with a plurality of reinforcing ribs 405. The filter housing 401, flange 402, flow guide 403, water guide cap 404 and reinforcing ribs 405 can be integrally formed into the filter element 40.

[0120] In one possible implementation, Figure 3 As shown, multiple reinforcing ribs 405 of the same shape are evenly arranged on the outer wall of the filter housing 401. The middle section of each reinforcing rib 405 is closer to the filter housing 401 than the upper and lower sections. This arrangement helps save material usage of the reinforcing ribs 405, thereby reducing costs.

[0121] In some examples, such as Figure 3 As shown, four reinforcing ribs 405 are evenly arranged on the outer wall of the filter housing 401 along the circumference of the filter housing 401. The filter housing 401, flange 402, flow guide 403, water guide cap 404 and reinforcing ribs 405 can be made of plastic.

[0122] In one possible implementation, Figure 3 See also Figure 1 The filter element 40 may further include a sealing gasket 406. The sealing gasket 406 is sleeved on the flow guide 403, the flange 402 and the second housing 102 (see Figure 1 ) are in contact with the sealing gasket 406. The sealing gasket 406 can fill the gap between the flange 402 and the second housing 102, so that water cannot flow around the filter housing 401 and directly enter the third housing 103, thereby improving the sealing performance between the flange 402 and the second housing 102.

[0123] Further, if Figure 4 See also Figure 1 The ring valve 50 has a sixth through hole 50a and a seventh through hole 50b that are coaxial and connected. The aperture of the seventh through hole 50b is larger than that of the sixth through hole 50a. The seventh through hole 50b is arranged below the sixth through hole 50a. The first water inlet pipe 20 (see Figure 1 ) is located in the sixth through hole 50a and the seventh through hole 50b.

[0124] In this embodiment, the sixth through hole 50a and the seventh through hole 50b can be the first water inlet pipe 20 (see Figure 1 ) provides accommodation space, and the seventh through hole 50b can also provide accommodation space for wash water. The arrangement of the seventh through hole 50b having a larger aperture than the sixth through hole 50a allows for additional space to accommodate wash water even when at least a portion of the first water inlet pipe 20 is located within the seventh through hole 50b.

[0125] Further, if Figure 4 As shown, the outer peripheral wall of the ring valve 50 is provided with a first groove 50c along the circumference of the ring valve 50, and the ring valve 50 is also provided with a plurality of second water-permeable holes 50d to connect the first groove 50c with the seventh through hole 50b.

[0126] In this embodiment, this arrangement allows the first groove 50c to be connected to the seventh through hole 50b. When the filter element 40 is in the dirt cleaning state, the first groove 50c can also allow the second through hole 10b to be connected to the seventh through hole 50b, providing a water passage for sewage containing detached impurities and dirt to be discharged from the first shell 101.

[0127] In one possible implementation, Figure 4 As shown, along the circumference of the ring valve 50, the ring valve 50 is evenly provided with a plurality of second water-permeable holes 50d.

[0128] Further, if Figure 4 As shown, the outer peripheral wall of the ring valve 50 is further provided with a second groove 50e along the circumference of the ring valve 50 , and the inner side wall of the ring valve 50 located at the sixth through hole 50a is further provided with a third groove 50f along the circumference of the ring valve 50 .

[0129] In this embodiment, the second groove 50e can be used to install a sealing ring and lubricant to improve the sealing performance between the ring valve 50 and the first housing 101 (see Figure 1 ) between the inner wall, and can also improve the relative movement between the ring valve 50 and the inner wall of the first housing 101 smoothness. The third groove 50f can also be used to install a sealing ring and lubricant to improve the sealing between the ring valve 50 and the first water inlet pipe 20 (see Figure 1) and the outer wall, and can also improve the smoothness of the relative movement between the ring valve 50 and the outer wall of the first water inlet pipe 20.

[0130] In one possible implementation, Figure 4 As shown, the number of the second groove 50e and the third groove 50f can be one or more.

[0131] In some examples, such as Figure 4 As shown, there is one third groove 50 f and two second grooves 50 e , which are respectively disposed at the upper section and the lower section of the ring valve 50 .

[0132] Further, if Figure 1 As shown, the filter device 600 may further include a plate valve 60 disposed in the housing 10 , and the plate valve 60 is configured to selectively block the fourth through hole 10 d and the third through hole 10 c .

[0133] In this embodiment, the plate valve 60 is used to selectively block the fourth through hole 10d and the third through hole 10c. When the filter element 40 is in the filtering state, the plate valve 60 can block the fourth through hole 10d, thereby leaving the third through hole 10c unblocked, facilitating the discharge of purified water filtered by the filter housing 401 through the third through hole 10c and out of the third housing 103. When the filter element 40 is in the dirt cleaning state, the plate valve 60 can block the third through hole 10c, thereby leaving the fourth through hole 10d unblocked, preventing the wastewater generated after the filter element 40 cleans the dirt from being discharged from the third housing 103 through the third through hole 10c.

[0134] In one possible implementation, Figure 1 As shown, the plate valve 60 may include a valve plate 61 and a hinge shaft 62. The bottom end of the valve plate 61 may rotate around the hinge shaft 62 to selectively block the fourth through hole 10d and the third through hole 10c.

[0135] Further, if Figure 1 and Figure 2 As shown, the filtering device 600 also includes an elastic member 70 arranged in the shell 10, the top end of the elastic member 70 is connected to the shell 10, and the bottom end of the elastic member 70 is connected to the ring valve 50. The elastic member 70 is constructed so that when the elastic member 70 is not compressed, the second through hole 10b is not connected to the first groove 50c.

[0136] In this embodiment, when the filter element 40 is in the filtering state, the elastic member 70 is in an uncompressed state, at which point the second through hole 10b is disconnected from the first groove 50c. When the filter element 40 is in the cleaning state, the ring valve 50 presses the elastic member 70 upward, causing the elastic member 70 to be compressed. At this point, the second through hole 10b is connected to the first groove 50c. After the force compressing the elastic member 70 disappears, the elastic member 70 returns to its original state from the compressed state to its initial state. The elastic force of the elastic member 70 pushes the ring valve 50 downward, at which point the second through hole 10b is disconnected from the first groove 50c.

[0137] like Figure 5 See also Figure 1 The present invention also provides a washing machine 700. The washing machine 700 includes the filtering device 600 in any of the above embodiments (see Figure 1 ), casing 710, second water inlet pipe 720, clean water pipe 730, sewage pipe 740 and drain pipe 750.

[0138] The filter device 600 is disposed in the housing 710;

[0139] The second water inlet pipe 720 is disposed outside the housing 710 and is connected to the housing 710 and the first water inlet pipe 20 of the filter device 600 (see Figure 1 ) are connected;

[0140] The clean water pipe 730 corresponds to the third through hole 10c (see Figure 1 ) is connected to the housing 10 of the filter device 600 (see Figure 1 ), the water purification pipe 730 is disposed in the housing 710;

[0141] The sewage pipe 740 corresponds to the second through hole 10b (see Figure 1 ) is connected to the housing 10 of the filter device 600 (see Figure 1 ), at least a portion of the sewage pipe 740 is disposed within the housing 710;

[0142] The drain pipe 750 is partially disposed outside the housing 710 , and one end of the sewage pipe 740 away from the filtering device 600 passes through the outside of the housing 710 and is connected to the drain pipe 750 .

[0143] In this embodiment, the housing 710 provides a storage space for the filter device 600. The second water inlet pipe 720 is primarily used to transport water to the interior of the washing machine 700 for access to the filter device 600. The clean water pipe 730 is primarily used to transport clean water filtered by the filter device 600 to the outer drum (not shown) and / or the dispenser box (not shown) for use in washing and / or rinsing detergent. The sewage pipe 740 is primarily used to transport sewage generated after the filter device 600 self-cleans to the drain pipe 750 of the washing machine 700. The drain pipe 750 is used to discharge the dirty water generated during the washing process into a sewer or drainage system.

[0144] In one possible implementation, Figure 5 See also Figure 1 The washing machine 700 may further include an electromagnetic valve 760. The electromagnetic valve 760 is disposed on a section of the second water inlet pipe 720 located inside the housing 710. The first water inlet pipe 20 of the filter device 600 (see Figure 1 ) The upper end is provided with a plurality of protrusions 20b along the circumference of the first water inlet pipe 20 (see Figure 1 ), the plurality of protrusions 20b can enable the second water inlet pipe 720 of the washing machine 700 to be clamped to the first water inlet pipe 20 of the filtering device 600.

[0145] In one possible implementation, Figure 5 See also Figures 1 to 4 When the washing machine 700 is performing a normal washing program, the electromagnetic valve 760 is opened, and water flows through the second water inlet pipe 720 of the washing machine 700 into the filter device 600 (see Figure 1 ) of the first water inlet pipe 20 (see Figure 1 ), and then enters the first housing 101 of the filter device 600 (see Figure 1 ) in the first housing 101. The water flows from the filter element 40 (see Figure 1 ) filter housing 401 (see Figure 3 ) outside into the inner side of the filter housing 401, so that the impurities and dirt in the external water can be intercepted on the outer wall of the filter housing 401, so that the purified water after being filtered by the filter housing 401 passes through the guide member 403 (see Figure 3 ) into the third housing 103 of the filter device 600 (see Figure 1 ), and then through the third through hole 10c of the filter device 600 (see Figure 1 ) enters the clean water pipe 730 of the washing machine 700 for washing clothes and / or flushing detergent into the outer drum.

[0146] Since the water flows in the first water inlet pipe 20 (see Figure 1 ) flows from top to bottom, so at the first joint 30 of the filter device 600 (see Figure 2) generates negative pressure at the vertical downward opening of the first connector 30, thereby causing the fifth through hole 20a (see Figure 1 ) is also under negative pressure, and due to the fourth through hole 10d of the filter device 600 (see Figure 1 ) through the connecting pipe 80 (see Figure 2 ) and the fifth through hole 20a (see Figure 1 ) is connected, so the fourth through hole 10d (see Figure 1 ) is also negative pressure, therefore, the plate valve 60 (see Figure 1 ) of the valve plate 61 (see Figure 1 ) can tightly seal the fourth joint 110 of the filter device 600 (see Figure 2 ) of the oblique upward opening, and at the same time, the valve plate 61 of the plate valve 60 is inclined, which is conducive to the flow guide 403 (see Figure 3 ) flows into the third housing 103 (see Figure 1 ) of the water flow impacts the valve plate 61, so that the valve plate 61 blocks the upward oblique opening of the fourth joint 110 more tightly, and can also form a reflection and deflection effect on the water flow, which is conducive to the water flow entering the clean water pipe 730 through the third through hole 10c.

[0147] The first housing 101 (see Figure 1 ) is slightly higher than the water pressure of the first water inlet pipe 20, and the water in the first housing 101 has the ability to push the ring valve 50 of the filter device 600 (see Figure 1 ) moves upward, but the thrust is insufficient to overcome the elastic member 70 (see Figure 1 ) elastic force, therefore, the ring valve 50 will not move relative to the first housing 101 and the first water inlet pipe 20, thereby preventing water from flowing through the seventh through hole 50b of the ring valve 50 (see Figure 4 ), the second water permeable hole 50d (see Figure 4 ) and the first groove 50c (see Figure 4 ) flows into the first housing 101 (see Figure 1 ) of the second through hole 10b (see Figure 1 ) and waste water.

[0148] In one possible implementation, Figure 5 See also Figures 1 to 4 As the washing machine 700 is used for a long time, the filter housing 401 of the filter element 40 (see Figure 3 ) The outer wall of the filter housing 401 accumulates a lot of impurities and dirt, which makes it difficult for water to penetrate from the outside of the filter housing 401 into the inside of the filter housing 401. As the impurities and dirt accumulated on the outer wall of the filter housing 401 increase the degree of obstruction to the water flow, the first housing 101 (see Figure 1 ) and the first water inlet pipe 20 (see Figure 1) increases, the water flow rate in the first water inlet pipe 20 decreases, and the first joint 30 (see Figure 2 ) has a vertical downward opening where the negative pressure gradually disappears and turns into positive pressure, so that the water flow can enter the connecting pipe 80 from the opening of the first joint 30 (see Figure 2 ), and then push the plug on the fourth joint 110 (see Figure 2 ) of the valve plate 61 (see Figure 1 ), and at the same time, part of the water flows from the third through hole 10c (see Figure 1 ) out, so that the valve plate 61 can be quickly sealed at the third joint 100 (see Figure 2 ) is obliquely opened downward. Figure 1 ) suddenly lost its outlet, causing the water flow to disappear and the water pressure to rise suddenly, causing the shock wave generated by the water pressure to be transmitted upward, which can cause the filter housing 401 (see Figure 3 ) generates vibration, thereby loosening and falling off impurities and dirt attached to the outer wall of the filter housing 401 in the absence of water flow. The water pressure shock wave also pushes the ring valve 50 (see Figure 2 ) overcome the elastic member 70 (see Figure 2 ) moves upwards due to the elastic force, so that the second through hole 10b (see Figure 1 ) through the first groove 50c (see Figure 4 ), the second water permeable hole 50d (see Figure 4 ) and the seventh through hole 50b (see Figure 4 ) is connected, allowing sewage containing dirt removed from filter housing 401 to flow into sewage pipe 740 and then into drain pipe 750 of washing machine 700, thereby achieving self-cleaning of filter element 40. When filter housing 401 is backwashed, the water permeability of filter housing 401 increases. Simultaneously, the elastic force generated by the compression of elastic member 70 pushes ring valve 50 to reset after overcoming the water pressure and the damping of the sealing ring. Under the action of its own weight, valve disc 61 reopens third through hole 10c and blocks fourth through hole 10d. In other words, valve disc 61 reopens the downward-slanting opening of third connector 100 and blocks the upward-slanting opening of fourth connector 110, returning filter device 600 to its filtering state. This cycle repeats.

[0149] Thus far, the technical solutions of the present invention have been described in conjunction with the preferred embodiments shown in the accompanying drawings. However, it will be readily understood by those skilled in the art that the scope of protection of the present invention is obviously not limited to these specific embodiments. Without departing from the principles of the present invention, those skilled in the art may make equivalent changes or substitutions to the relevant technical features, and the technical solutions after such changes or substitutions will fall within the scope of protection of the present invention.

Claims

1. A filtering device, characterized in that: The filtering device comprises: The housing is provided with a first through hole, a second through hole, a third through hole and a fourth through hole; a first water inlet pipe passing through the first through hole, at least a portion of the first water inlet pipe being located within the housing, and a fifth through hole being formed on a side wall of the first water inlet pipe; a first connector connected to the first water inlet pipe, wherein one end of the first connector is connected to the fifth through hole, and the other end is disposed in the first water inlet pipe and has a downward opening; a filter element disposed in the housing, the filter element being in contact with the first water inlet pipe and the housing; a ring valve, disposed in the housing and sleeved on the first water inlet pipe, the ring valve being slidably connected to the housing and the first water inlet pipe; The second through hole and the fifth through hole are arranged above the filter element, and the third through hole and the fourth through hole are arranged below the filter element. The filtering device is constructed so that the fourth through hole and the fifth through hole are connected outside the shell, and the fourth through hole and the third through hole are selectively blocked to achieve filtering or self-cleaning of the filter element.

2. The filtering device according to claim 1, characterized in that Water flows from the first water inlet pipe into the housing and flows through the filter element. The ring valve slides to below the second through hole. The ring valve is not connected to the second through hole. The downward opening of the first joint forms a negative pressure to block the fourth through hole and open the third through hole. The water flowing out of the filter element is discharged to the outside of the housing through the third through hole, so that the filter element can filter the water.

3. The filtering device according to claim 1, characterized in that When the filter element is blocked, the downward opening of the first joint is converted from negative pressure to positive pressure to open the fourth through hole and block the third through hole. The water at the bottom of the housing flows through the filter element and flows toward the top of the housing to remove impurities attached to the outside of the filter element. The ring valve moves upward and is connected to the second through hole. The sewage containing impurities is discharged to the outside of the housing through the ring valve and the second through hole to achieve self-cleaning of the filter element.

4. The filtering device according to claim 1, characterized in that The shell includes a first shell, a second shell and a third shell. The first shell and the third shell are both connected to the second shell. The first shell is provided with the first through hole and the second through hole. The third shell is provided with the third through hole and the fourth through hole. The filter element is arranged in the first shell and the second shell and abuts against the second shell and the first water inlet pipe. At least part of the first water inlet pipe and the ring valve are both arranged in the first shell.

5. The filtering device according to claim 4, characterized in that The filter element includes a filter housing, a flange and a flow guide. The filter housing and the flow guide are both connected to the flange. The filter housing has openings at the upper and lower ends and a plurality of first water-permeable holes are opened on the side wall. The filter housing is passed through the flange, and the flange abuts against the second outer shell. The flow guide is arranged in the second outer shell.

6. The filtering device according to claim 5, characterized in that The filter element further includes a water guide cap, which is arranged at the top of the filter housing to block the opening at the top of the filter housing, and the water guide cap is located in the first water inlet pipe.

7. The filtering device according to claim 6, characterized in that The filter element further includes a plurality of reinforcing ribs, each of which is arranged on the outer side wall of the filter housing, the first water inlet pipe and the ring valve are both in contact with the top end of each reinforcing rib, and the bottom end of each reinforcing rib is connected to the flange.

8. The filtering device according to claim 1, characterized in that The ring valve has a coaxial and connected sixth through hole and a seventh through hole, the aperture of the seventh through hole is larger than the aperture of the sixth through hole, the seventh through hole is arranged below the sixth through hole, and at least part of the first water inlet pipe is located in the sixth through hole and the seventh through hole.

9. The filtering device according to claim 8, characterized in that The outer peripheral wall of the ring valve is provided with a first groove along the circumference of the ring valve. The ring valve is also provided with a plurality of second water-permeable holes so that the first groove is connected with the seventh through hole.

10. The filtering device according to claim 9, characterized in that The outer peripheral wall of the ring valve is further provided with a second groove along the circumference of the ring valve, and the inner side wall of the ring valve located at the sixth through hole is further provided with a third groove along the circumference of the ring valve.

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