A greywater reuse treatment device

Abstract

This application discloses a grey water reuse treatment device, including a filtration mechanism, a reuse water tank, and a waste tank. The upper end of the filtration mechanism has a grey water zone A, which is connected to the drain outlet of a washbasin via an inlet pipe. The middle part of the filtration mechanism has a clean water zone B, which is connected to the reuse water tank via a filter suction pipe and a backwash suction pipe. The end of the filtration mechanism has a wastewater discharge zone C, which is connected to the waste tank via a wastewater discharge pipe. The grey water reuse treatment device provided by this application can effectively improve the service life of the filter by backwashing, eliminating the need for frequent filter element replacements and reducing maintenance costs. Simultaneously, the addition of a bactericide inhibits the growth of microorganisms.

Description

Technical Field

[0001] This application relates to the field of recycled water treatment technology, and in particular to a grey water recycling treatment device. Background Technology

[0002] For trains, grey water refers to the water that flows from washbasins. As people become more aware of water conservation, grey water reuse is becoming increasingly common. On trains, due to limited space, the amount of clean water carried in each carriage is also very limited. All water needs to be used for cleaning and sanitation in washrooms and toilets, as well as for flushing toilet bowls, making water consumption very tight and the utilization of grey water even more important. Grey water generated on trains typically accounts for 25% to 40% of the total water consumption. Grey water from washroom and toilet washbasins, along with black water from toilet flushing, is discharged into the onboard waste bins, increasing the design volume of the waste bins and causing significant water waste. Furthermore, trains need to carry large-volume water storage devices to meet water demand.

[0003] In recent years, to save energy and protect the environment, domestic high-speed trains have gradually introduced greywater recycling systems to improve greywater utilization and effectively reduce the volume of clean water tanks and the amount of wastewater to be treated. However, existing greywater treatment methods on trains mainly rely on filtration devices to filter the greywater generated on the train into usable flushing water. However, this requires frequent replacement of filter cartridges, increasing maintenance costs. For greywater recycling systems, the lifespan of the filter cartridges is crucial; any filtration or interception will clog the filter channels. Secondly, long-term retention of greywater residue can lead to the proliferation of bacteria and other microorganisms, causing water pollution and, in particular, unpleasant odors that negatively impact the toilet experience. Summary of the Invention

[0004] To solve the above-mentioned technical problems, the present invention provides a greywater reuse treatment device. The present invention can effectively improve the service life of the filter by backwashing and cleaning the filter, eliminating the need for frequent replacement of the filter element and reducing maintenance costs. At the same time, the addition of bactericides inhibits the growth of microorganisms.

[0005] The technical solution provided by this invention is as follows:

[0006] A greywater reuse treatment device includes a filtration mechanism, a reuse water tank, and a waste tank. The upper end of the filtration mechanism is provided with a greywater zone A, which is connected to the drain outlet of a washbasin through an inlet pipe. The middle part of the filtration mechanism is provided with a clean water zone B, which is connected to the reuse water tank through a filtration suction pipe and a backwash suction pipe. The end of the filtration mechanism is provided with a wastewater discharge zone C, which is connected to the waste tank through a wastewater discharge pipe.

[0007] Preferably, the filtration mechanism includes a filter, an inner surface filter element, an electric push rod, a pull rod, and a sealing block. The inner surface filter element is disposed inside the filter, and the pull rod passes through the middle of the inner surface filter element. The upper end of the pull rod is connected to the electric push rod, and the lower part of the pull rod is connected to the sealing block.

[0008] The upper part of the inner surface filter element is fixed to the filter cylinder through the filter element extension tube and the annular sealing plate, and the lower part of the inner surface filter element is fixed to the filter element support flange of the filter. The filter cylinder, the inner surface filter element, the filter element support flange, the filter element extension tube, and the annular sealing plate form a water purification zone B.

[0009] The filter cylinder is provided with an upper flange, which is paired with a flange cover to seal and form the upper space of the filter. The interior of the filter element extension tube, together with the annular sealing plate, the filter cylinder and the flange cover, forms the grey water zone A.

[0010] The lower part of the filter element support flange is provided with a lower end cap. The lower end cap and the lower end cap flange are welded together and paired with the filter element support flange to form the lower space of the filter. The lower space of the filter and the sealing block form a sewage discharge area C.

[0011] Preferably, the inner surface filter element is provided with a spiral guide plate, and the central axis of the spiral guide plate, the central axis of the inner surface filter element, and the central axis of the filter are coincident.

[0012] Preferably, a trigger level gauge is provided inside the gray water zone A formed by the filter element extension tube, the annular sealing plate, the filter cylinder, and the flange cover.

[0013] Preferably, the end inlet connector of the inlet pipe passes through the filter cylinder and is inserted counterclockwise into the filter element extension tube.

[0014] Preferably, the filter suction pipeline includes a first water suction pipe, a first electric water suction valve installed on the first water suction pipe, a second water suction pipe, and a second electric water suction valve installed on the second water suction pipe. The first water suction pipe and the second water suction pipe are connected by a connecting pipe, and a water pump is provided on the connecting pipe.

[0015] The pumping end of the filter suction pipe is connected to the outlet pipe at point B in the clean water area, and the output end of the filter suction pipe is connected to the upper part of the recycled water tank.

[0016] Preferably, the backwash suction pipeline includes a first backwash pipe, a first backwash electric valve installed on the first backwash pipe, a second backwash pipe, a second backwash electric valve installed on the second backwash pipe, and a water pump;

[0017] One end of the first backwash pipe is connected to the connecting pipe, and the other end is connected to the lower part of the recycled water tank;

[0018] One end of the second backwash pipe is connected to the first pumping pipe, and the other end is connected to the second pumping pipe.

[0019] Preferably, the bottom of the recycled water tank is provided with a protruding structure for storing backwash water, the recycled water tank has an irregular shape, an upper level gauge and a lower level gauge are provided inside the recycled water tank, and a disinfection cylinder is provided at the top of the recycled water tank, the disinfection cylinder is provided with slow-release disinfectant chlorine tablets.

[0020] Preferably, the water inlet pipe includes an upper rubber sleeve, a right-angle bend, and a water inlet connector. The right-angle bend is disposed between the water inlet connector and the drain pipe of the washbasin, and the upper rubber sleeve is sleeved on the outside of the connection between the right-angle bend and the drain pipe of the washbasin.

[0021] Preferably, the sewage pipeline includes a sewage connection pipe, a lower rubber sleeve, a water trap, and a through-plate connection pipe. The sewage connection pipe is connected to the sewage area C. The water trap is located below the sewage connection pipe. The lower rubber sleeve is located at the connection between the water trap and the sewage connection pipe. The through-plate connection pipe is located outside the connection between the water trap and the waste tank.

[0022] This application has the following advantages over the prior art:

[0023] 1. The grey water recycling treatment device of this application is designed to treat the drainage from washbasins. Its purpose is to remove particulate impurities and disinfect the grey water. The drainage itself is of good quality and is lightly polluted. It generally contains only a small amount of suspended particulate impurities. After simple treatment, it can be used for flushing toilets. The entire treatment process is simple and can meet the design requirements of a compact structure and flexible installation. It is very suitable for applications in train carriages where the space left for equipment is very limited.

[0024] 2. The grey water recycling treatment device of this application uses a metal filter element with a filtration accuracy of 30-50 microns. Water is directly drawn and filtered by a water pump, eliminating the need for a pre-filter grey water collection tank. After the filtered water enters the recycling tank, it is sterilized by slow-release chlorine tablets. The filter element is used for filtration and retention on its inner surface. Timed backwashing is used to keep the filtration channel unobstructed, eliminating the need for frequent filter element replacement.

[0025] 3. The grey water reuse treatment device of this application uses an internal surface filter element as its core, dividing the interior of the filter into a grey water zone, a clean water zone, and a sewage discharge zone. This achieves integrated filtration, backwashing, and sewage discharge functions simultaneously. By installing an electric push rod on the top of the filter, along with a pull rod and a sealing block, a simple structure ingeniously enables the filter to perform real-time filtration, backwashing, and sewage discharge operations. It possesses both filtration functionality and the ability to directly discharge sewage in case of overload, enabling unattended operation.

[0026] 4. The grey water reuse treatment device of this application follows the principle of targeted and effective treatment. The treatment process is designed to have a high efficiency in treating pollutants of specific properties. It is also suitable for special requirements with limited structural space and is suitable for compact layout and strong impact and vibration resistance mechanical structure design. It shortens the entire treatment process and enables grey water treatment to achieve the expected purification effect. It is very suitable for application in grey water purification and reuse in train carriages. Attached Figure Description

[0027] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0028] Figure 1 This is a schematic diagram of the greywater reuse treatment device in an embodiment of the present invention.

[0029] Figure label:

[0030] 1. Filtration mechanism; 11. Grey water zone A; 12. Clean water zone B; 13. Sewage discharge zone C; 101. Filter; 102. Inner surface filter element; 103. Electric push rod; 104. Pull rod; 105. Sealing block; 106. Filter element extension tube; 107. Annular sealing plate; 108. Filter element support flange; 109. Upper flange; 110. Flange cover; 111. Lower end cap; 112. Spiral guide vane; 113. Outlet water connection pipe; 114. Trigger level gauge; 2. Reclaimed water tank; 21. Upper level gauge; 22. Lower level gauge; 23. Disinfection cylinder; 24. Slow-release disinfectant chlorine 1. Washbasin; 2. Waste bin; 3. Inlet pipe; 4. Inlet connection pipe; 41. Upper rubber sleeve; 43. Right angle bend pipe; 5. Washbasin; 6. Filter suction pipe; 61. First suction pipe; 62. First electric suction valve; 63. Second suction pipe; 64. Second electric suction valve; 65. Connecting pipe; 66. Water pump; 7. Backwash suction pipe; 71. First backwash pipe; 72. First electric backwash valve; 73. Second backwash pipe; 74. Second electric backwash valve; 8. Sewage pipe; 81. Sewage connection pipe; 82. Lower rubber sleeve; 83. Water trap; 84. Through-plate connection pipe. Detailed Implementation

[0031] To enable those skilled in the art to better understand the technical solutions in this application, the technical solutions in the embodiments of this application will be clearly and completely described below. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0032] like Figure 1 As shown, this embodiment of the invention provides a grey water reuse treatment device, including a filtration mechanism 1, a reuse water tank 2, and a waste tank 3. The upper end of the filtration mechanism 1 is provided with a grey water zone A11, which is connected to the drain outlet of a washbasin 5 through a water inlet pipe 4. The middle part of the filtration mechanism 1 is provided with a clean water zone B12, which is connected to the reuse water tank 2 through a filtration suction pipe 6 and a backwash suction pipe 7. The end of the filtration mechanism 1 is provided with a wastewater discharge zone C13, which is connected to the waste tank 3 through a wastewater discharge pipe 8.

[0033] In this embodiment, the filtration mechanism 1 includes a filter 101, an inner surface filter element 102, an electric push rod 103, a pull rod 104, and a sealing block 105. The inner surface filter element 102 is disposed inside the filter 101 and is a metal filter element with a filtration accuracy of 30-50 micrometers. The pull rod 104 passes through the middle of the inner surface filter element 102, with its upper end connected to the electric push rod 103 and its lower part connected to the sealing block 105. The upper part of the inner surface filter element 102 is fixed to the cylinder of the filter 101 through a filter element extension tube 106 and an annular sealing plate 107, while the lower part of the inner surface filter element 102 is fixed to the filter element support flange 108 of the filter. The filter cylinder 101, along with the inner surface filter element 102, filter element support flange 108, filter element extension tube 106, and annular sealing plate 107, forms a clean water zone B12. An upper flange 109 is provided on the upper part of the filter cylinder 101. The upper flange 109 and flange cover 110 are paired and sealed to form the upper space of the filter 101. The interior of the filter element extension tube 106, together with the annular sealing plate 107, the filter cylinder 101, and flange cover 110, forms a grey water zone A11. A lower end cap 111 is provided at the lower part of the filter element support flange 108. The lower end cap 111 and lower end cap flange are welded together and paired with the filter element support flange 108 to form the lower space of the filter 101. The lower space of the filter 101 and the sealing block 105 form a sewage discharge zone C13. The electric push rod 103 is fixed by a bracket welded to the flange cover 110.

[0034] In this embodiment, a spiral guide vane 112 is provided inside the inner surface filter element 102, and the central axis of the spiral guide vane 112, the central axis of the inner surface filter element 102, and the central axis of the filter 101 coincide. A triggered level gauge 114 is provided inside the grey water zone A11 formed by the filter element extension tube 106, the annular sealing plate 107, the cylinder of the filter 101, and the flange cover 111. When the water level collected by the inner surface filter element 102 rises to the position where the level gauge 114 triggers a signal, the filtration program is started. The filtration program runs for a set time and then stops. Simultaneously, the electric push rod 103 drives the pull rod 104 to press down and open the sealing block 105, allowing the water in the inner surface filter element 102, carrying loosened material, to drain into the sewage area C13 and then into the waste tank 3 via the sewage pipe 8. At the same time, the backwash suction pipe 7 draws water from the recycled water tank 2 and runs for a set time, backwashing the inner surface filter element 102 from the outside in, clearing the filtration channels. This also drains loosened material into the sewage area C13 and then into the waste tank 3. Then, it waits for the next trigger signal from the level gauge 114. The backwashing time is shorter than the filtration time.

[0035] In this embodiment, the filtration mechanism 1 uses an inner surface filter element 102 with a spiral guide vane 112 inside. After grey water is introduced, it is guided by the spiral guide vane 112 to form a tangential water flow that spirals downwards, creating cross-flow filtration within the inner surface filter element 102. On one side, clean water passes through the inner surface filter element 102 into the clean water zone B12, while on the other side, impurities trapped are loosened from the inner surface of the inner surface filter element 102 under the action of the sweeping water flow and are collected below the inner surface filter element 102, reducing the probability of filter element clogging.

[0036] In this embodiment, the end inlet pipe 41 of the inlet pipe 4 passes through the cylinder of the filter 101 and is inserted counterclockwise tangentially into the filter element extension pipe 106. Grey water is introduced into the grey water zone A11 of the filter 101, and then, guided by the spiral guide vane 112, an initial tangential water flow is formed, which enhances the subsequent flow guidance of the spiral guide vane 112, forming a tangential spiral sweep flow on the inner surface of the inner surface filter element 102, thus creating cross-flow filtration within the inner surface filter element 102.

[0037] In this embodiment, the filter suction pipeline 6 includes a first suction pipe 61, a first electric suction valve 62 installed on the first suction pipe 61, a second suction pipe 63, and a second electric suction valve 64 installed on the second suction pipe 63. The first suction pipe 61 and the second suction pipe 63 are connected by a connecting pipe 65, and a water pump 66 is provided on the connecting pipe 65. The suction end of the filter suction pipeline 6 is connected to the outlet pipe 113 at the clean water zone B12, and the output end of the filter suction pipeline 6 is connected to the upper part of the recycled water tank 2. Water is pumped from the clean water zone B12 and transported to the recycled water tank 2.

[0038] In this embodiment, the backwash suction pipeline 7 includes a first backwash pipe 71, a first backwash electric valve 72 installed on the first backwash pipe 71, a second backwash pipe 73, a second backwash electric valve 74 installed on the second backwash pipe 73, and a water pump 66 in the shared filter suction pipeline 6; one end of the first backwash pipe 71 is connected to the connecting pipe 65, and the other end is connected to the lower part of the recycled water tank 2; one end of the second backwash pipe 73 is connected to the first water pumping pipe 61, and the other end is connected to the second water pumping pipe 63. Water is pumped from the recycled water tank 2 and transported to the inner surface filter element 102 of the clean water zone B12 for backwashing.

[0039] In this embodiment, the recycled water tank 2 is equipped with an upper level gauge 21 and a lower level gauge 22. A disinfection cylinder 23 is located at the top of the recycled water tank 2, containing slow-release chlorine tablets 24. The disinfection cylinder 23 is positioned near the connection point between the second water pipe 63 and the recycled water tank 2. Water drawn from the clean water zone B12 can flush the disinfection cylinder 23. The disinfection cylinder 23 has a dosing port located at the top of the recycled water tank 2. The cylinder body of the disinfection cylinder 23 can be inserted through the dosing port. The upper edge of the disinfection cylinder 23 is larger than the inner diameter of the dosing port, allowing the upper edge of the disinfection cylinder 23 to rest on the dosing port. The dosing port is threaded with a cap to prevent the entry of external dust. To ensure the safety of the treated effluent for toilet flushing microbial indicators, a disinfection cylinder using slow-release chlorine tablets 24 is installed in the recycled water tank 2. This reduces the need for traditional disinfection and dosing equipment, reducing maintenance workload and meeting the requirement of a compact equipment structure.

[0040] Slow-release chlorine tablets 24 are placed inside the disinfection cylinder 23. The cylinder body of the disinfection cylinder 23 has several long strip-shaped water-permeable holes, which allow water drawn from the water purification area B12 to partially enter the disinfection cylinder 23 during rinsing, rinsing the slow-release chlorine tablets 24. Each time, a small amount of the agent is dissolved and carried into the water temporarily stored in the recycled water tank 2, inhibiting and killing the reproduction of microorganisms in the water.

[0041] In this embodiment, the recycled water tank 2 has an irregular shape, with a protruding structure at the bottom for storing backwash water. The upper level gauge 21 and the lower level gauge 22 are located at the upper and lower protruding parts of the recycled water tank 2, respectively. When the water level rises, the upper level gauge 21 is triggered, indicating that the recycled water tank 2 has reached full capacity. The electric push rod 103 drives the pull rod 104 to press down and open the sealing block 105, allowing water entering the inner surface filter element to be discharged directly into the sewage discharge area C13 without further filtration. This continues until the signal disappears, then resumes operation. When the water level drops, the lower level gauge 22 is triggered, indicating that the recycled water tank 2 has insufficient water for backwashing, and the backwashing program stops. This continues until the signal disappears, then resumes operation.

[0042] In this embodiment, a recycled water discharge pipe is led out from the bottom recess of the recycled water tank 2 to lead the recycled water to the pressurization device for flushing the toilet.

[0043] In this embodiment, the water inlet pipe 4 includes an upper rubber sleeve 42, a right-angle bend 43, and a water inlet connector 41. The right-angle bend 43 is disposed between the water inlet connector 41 and the drain pipe of the washbasin 5. The upper rubber sleeve 42 is sleeved on the outside of the connection between the right-angle bend 43 and the drain pipe of the washbasin 5, and the drain water is introduced from below the washbasin 5 for grey water purification treatment.

[0044] In this embodiment, the sewage pipe 8 includes a sewage connection pipe 81, a lower rubber sleeve 82, a water trap 83, and a through-plate connection pipe 84. The sewage connection pipe 81 is connected to the sewage discharge area C13. The water trap 83 is located below the sewage connection pipe 8. The lower rubber sleeve 82 is located at the connection between the water trap 83 and the sewage connection pipe 81. The through-plate connection pipe 84 is located outside the connection between the water trap 83 and the waste bin 3, guiding the discharged sewage into the waste bin 3 suspended below the carriage floor.

[0045] The working principle of the greywater reuse treatment device in this embodiment is as follows:

[0046] This embodiment of the greywater reuse treatment device employs a high-precision surface filtration cartridge to remove suspended impurities with particle sizes larger than 30-50 micrometers from the greywater. It also incorporates a backwashing structure and backwash pipeline for periodic reverse cleaning of the filtration channels. To prevent bacterial growth on the retained material on the cartridge, a bactericide is added to the backwash water to inhibit microbial reproduction. Since the greywater reuse treatment device in this embodiment treats the wastewater collected from washbasin 5, the water itself is of relatively good quality and lightly contaminated, generally containing only a small amount of suspended particulate impurities. After simple treatment, it can be used for toilet flushing. Given the very limited space available for equipment in train carriages, a compact and flexible treatment device is crucial. The greywater reuse treatment device in this embodiment is designed with a filtration device that can be installed under the washbasin. Water is drawn directly from the drain outlet of the washbasin and introduced into the interior of the inner surface filter element 102. Under the action of the water pump, particulate impurities in the water are trapped by the inner surface of the filter element. The filtered water passes through the inner surface of the inner surface filter element 102 and enters the clean water chamber formed by the outer surface of the inner surface filter element 102 and the cylinder. Then, it enters the reuse water tank 2 through the water pump 66 and the filter suction pipe 6. The water flow impacts the disinfection cylinder 23 in the reuse water tank 2, flushing the slow-release disinfectant chlorine tablets 24 in the disinfection cylinder 23, dissolving a small amount of disinfectant, and forming disinfectant water of a set concentration, which is temporarily stored in the reuse water tank 2. According to the control operation program settings, water is periodically drawn from the recycled water tank 2 and introduced into the clean water chamber of the filter 101 via the water pump 66 and backwash suction pipe 7. Under water pressure, water flows backward from the outer surface of the inner surface filter element 102 to flush the inner surface, washing away the trapped material. Simultaneously, the drain block 105 at the bottom of the inner surface filter element 102 opens, discharging the backwash water carrying the washed-off material. This water flows through the through-plate pipe 84 and into the waste tank 3 under the carriage floor. Because the backwash water drawn from the recycled water tank 2 contains a bactericide, it inhibits the growth of microorganisms trapped on the inner surface filter element 102 during the backwashing process, thus preventing odor generation. Therefore, the goal of rapid purification, disinfection, and stable treatment of grey water is achieved. The greywater reuse treatment device in this embodiment follows the principle of targeted and effective treatment. The designed treatment process is highly efficient at treating pollutants of specific properties and is suitable for the special requirements of limited structural space. It is also suitable for compact layouts and mechanical structure designs with strong impact and vibration resistance. This treatment device design shortens the entire treatment process while achieving the desired purification effect for greywater. It is highly suitable for applications in greywater purification and reuse within train carriages.

[0047] The above description of the disclosed embodiments enables those skilled in the art to make or use the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A greywater reuse treatment device, comprising a filtration mechanism (1), a reuse water tank (2), and a waste tank (3), characterized in that, The upper end of the filter mechanism (1) is provided with a grey water zone A (11), which is connected to the drain outlet of the washbasin (5) through the water inlet pipe (4). The middle part of the filter mechanism (1) is provided with a clean water zone B (12), which is connected to the recycled water tank (2) through the filter suction pipe (6) and the backwash suction pipe (7). The end of the filter mechanism (1) is provided with a sewage discharge zone C (13), which is connected to the waste tank (3) through the sewage discharge pipe (8). The filtration mechanism (1) includes a filter (101), an inner surface filter element (102), an electric push rod (103), a pull rod (104), and a sealing block (105). The inner surface filter element (102) is disposed inside the filter (101). The pull rod (104) passes through the middle of the inner surface filter element (102). The upper end of the pull rod (104) is connected to the electric push rod (103), and the lower part of the pull rod (104) is connected to the sealing block (105). The upper part of the inner surface filter element (102) is fixed to the cylinder of the filter (101) through the filter element extension tube (106) and the annular sealing plate (107), and the lower part of the inner surface filter element (102) is fixed to the filter element support flange (108) of the filter (101). The cylinder of the filter (101), the inner surface filter element (102), the filter element support flange (108), the filter element extension tube (106), and the annular sealing plate (107) form a water purification zone B (12). The upper part of the filter (101) cylinder is provided with an upper flange (109). The upper flange (109) and the flange cover (110) are paired and closed to form the upper space of the filter. The interior of the filter element extension tube (106), together with the annular sealing plate (107), the cylinder of the filter (101) and the flange cover (110), forms the gray water area A (11). The lower part of the filter element support flange (108) is provided with a lower end cap (111). The lower end cap (111) and the lower end cap flange are welded together and paired with the filter element support flange (108) to form the lower space of the filter (101). The lower space of the filter (101) and the sealing block (105) form a sewage discharge area C (13). The inner surface filter element (102) is provided with a spiral guide plate (112), and the central axis of the spiral guide plate (112), the central axis of the inner surface filter element (102), and the central axis of the filter (101) coincide.

2. The grey water reuse treatment device according to claim 1, characterized in that, A trigger level gauge (114) is provided in the grey water area A (11) formed by the inside of the filter extension tube (106), the annular sealing plate (107), the cylinder of the filter (101), and the flange cover (110).

3. The grey water reuse treatment device according to claim 1, characterized in that, The end inlet pipe (41) of the inlet pipe (4) passes through the cylinder of the filter (101) and is inserted into the filter element extension pipe (106) in a counterclockwise tangential direction.

4. The grey water reuse treatment device according to any one of claims 1-3, characterized in that, The filter suction pipeline (6) includes a first water suction pipe (61), a first electric water suction valve (62) installed on the first water suction pipe (61), a second water suction pipe (63), and a second electric water suction valve (64) installed on the second water suction pipe (63). The first water suction pipe (61) and the second water suction pipe (63) are connected by a connecting pipe (65), and a water pump (66) is provided on the connecting pipe (65). The pumping end of the filter suction pipe (6) is connected to the outlet pipe (113) at the clean water area B (12), and the output end of the filter suction pipe (6) is connected to the upper part of the recycled water tank (2).

5. The grey water reuse treatment device according to claim 4, characterized in that, The backwash suction pipeline (7) includes a first backwash pipe (71), a first backwash electric valve (72) installed on the first backwash pipe (71), a second backwash pipe (73), a second backwash electric valve (74) installed on the second backwash pipe (73), and a water pump (66). One end of the first backwash pipe (71) is connected to the connecting pipe (65), and the other end is connected to the lower part of the recycled water tank (2); One end of the second backwash pipe (73) is connected to the first water pump pipe (61), and the other end is connected to the second water pump pipe (63).

6. The grey water reuse treatment apparatus according to any one of claims 1-3, characterized in that, The bottom of the recycled water tank (2) is provided with a protruding structure for storing backwash water. The recycled water tank (2) is provided with an upper level gauge (21) and a lower level gauge (22). The upper part of the recycled water tank (2) is provided with a disinfection cylinder (23), and the disinfection cylinder (23) is provided with slow-release disinfectant chlorine tablets (24).

7. The grey water reuse treatment apparatus according to any one of claims 1-3, characterized in that, The water inlet pipe (4) includes an upper rubber sleeve (42), a right-angle bend (43) and a water inlet connector (41). The right-angle bend (43) is located between the water inlet connector (41) and the drain pipe of the washbasin (5). The upper rubber sleeve (42) is fitted over the outside of the connection between the right-angle bend (43) and the drain pipe of the washbasin (5).

8. The grey water reuse treatment device according to any one of claims 1-3, characterized in that, The sewage pipe (8) includes a sewage inlet pipe (81), a lower rubber sleeve (82), a water trap (83), and a through-plate inlet pipe (84). The sewage inlet pipe (81) is connected to the sewage area C (13). The water trap (83) is located below the sewage inlet pipe (81). The lower rubber sleeve (82) is located at the connection between the water trap (83) and the sewage inlet pipe (81). The through-plate inlet pipe (84) is located outside the connection between the water trap (83) and the waste bin (3).

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