System for recycling grey water of train

Abstract

The invention relates to the technical field of train wastewater treatment, and discloses a train grey water recycling system which comprises a water basin, a purification tank and a water collecting tank, the purification tank is located below the water basin, a blow-off pipe is arranged between the purification tank and the water basin in a communicating mode, the water collecting tank is located below the purification tank, and a drainage pipe is arranged between the water collecting tank and the purification tank in a communicating mode. A water pumping mechanism is connected to the water collecting tank, a filtering unit, an adsorption unit and a disinfection unit are sequentially distributed in the purification box from top to bottom, a suspension frame is arranged in the disinfection unit located at the tail end of the purification box in a lifting sliding mode, a buoy is arranged at the top of the suspension frame, a transparent cover is arranged at the bottom of the suspension frame, and an ultraviolet disinfection lamp is installed in the transparent cover; a plurality of vertical limiting rods are arranged at the inner bottom of the purification box, the multiple limiting rods are arranged around the inlet end of the drainage pipe, the multiple limiting rods are jointly and slidably sleeved with a water stop rubber plug, and a pull rope is arranged at the top of the water stop rubber plug. The method has the effect of improving the train transportation efficiency.

Description

Technical Field

[0001] This application relates to the technical field of train wastewater treatment, and in particular, to a system for recycling train greywater. Background Art

[0002] In the current booming development of modern railway transportation, trains, as important means of transportation, carry a huge number of passengers shuttling between various places every day. However, the problem of greywater discharge during train operation has gradually emerged and become a major challenge faced by the railway industry.

[0003] Train greywater mainly comes from various daily activities of passengers during the journey, including washing, cleaning, and meal preparation. Its composition is complex, containing pollutants such as skin metabolites, detergent residues, food residues, and microorganisms. Traditional trains often directly discharge greywater, which not only wastes water resources but also damages the ecology along the railway line. Moreover, the organic pollutants and microorganisms in greywater can cause water eutrophication, affecting the water ecosystem. The discharged greywater can also pollute the soil and is not conducive to the growth of vegetation. In ecologically fragile areas, the damage may be long-term and difficult to recover.

[0004] In order to address the pollution problem caused by greywater discharge, in recent years, domestic trains have tried to adopt a collection and storage mode for energy conservation and environmental protection. In this mode, special storage tanks are equipped at the bottom of the train to temporarily store the greywater generated during operation. When the train stops at a station, the greywater in the storage tank is then transferred to ground facilities for centralized treatment.

[0005] However, many drawbacks have emerged in the actual application of this solution. Since the train's own storage capacity for greywater is limited, in order to ensure unobstructed greywater discharge during train operation, transfer storage tanks need to be set at regular intervals along the railway track. As a result, a large amount of trackside space is occupied, and the operating burden of the train is greatly increased. A large amount of greywater occupies the limited loading space inside the train, severely squeezing the space for loading clean water on the train, resulting in a tight water supply on the train. Therefore, frequent stopping, water storage, and discharge operations are required, which not only consume a large amount of time and labor costs but also increase the instability of train operation and reduce the transportation efficiency. Summary of the Invention

[0006] In order to improve the transportation efficiency of trains, this application provides a system for recycling train greywater.

[0007] The system for recycling train greywater provided by this application adopts the following technical solutions: A train greywater recycling system, comprising a washbasin, a purification tank and a water collection tank. The purification tank is located below the washbasin, and a sewage pipe is connected between the drainage outlet of the washbasin and the purification tank. The water collection tank is located below the purification tank, and a drainage pipe is connected between the drainage outlet of the purification tank and the water collection tank. A pumping mechanism for taking clean water as needed is connected to the water collection tank. In the purification tank, a filtering unit for intercepting impurities, an adsorption unit for removing odors and heavy metal ions, and a disinfection unit for sterilization are sequentially distributed from top to bottom. A suspension frame is slidably lifted in the disinfection unit at the end of the purification tank. A floating buoy is arranged at the top of the suspension frame, and a transparent cover is arranged at the bottom of the suspension frame. An ultraviolet disinfection lamp is installed in the transparent cover. A plurality of vertical limiting rods are arranged at the inner bottom of the purification tank. The plurality of limiting rods are arranged around the inlet end of the drainage pipe. A water-stop rubber plug is slidably sleeved on the plurality of limiting rods together. The water-stop rubber plug is inserted and matched with the drainage pipe. A pull rope connecting the suspension frame is arranged at the top of the water-stop rubber plug.

[0008] By adopting the above technical solution, the greywater flows into the purification tank after being discharged from the washbasin, intercepts impurities through the filtering unit, then removes odors and heavy metal ions in the adsorption unit, and finally is sterilized by the ultraviolet disinfection lamp in the disinfection unit. The purified greywater flows into the water collection tank through the drainage pipe and can be pumped and used through the pumping mechanism. During this process, the floating buoy drives the suspension frame to lift and lower with the change of the greywater liquid level. When the suspension frame rises to a certain height, the pull rope lifts the water-stop rubber plug to make the drainage port pass water, so that the cleaned water can be accumulated in the water collection tank for pumping and use. This system realizes the efficient recycling and reuse of train greywater, enables more loading space in the train to load clean water sources, alleviates the tense situation of water supply on the train, reduces the number of times of train stopping for water storage and discharge, shortens the stopping time of the train, reduces the labor cost, and improves the transportation efficiency.

[0009] Optionally, a filtering grille is arranged in the filtering unit. A cleaning roller is rotatably arranged above the filtering grille in the filtering unit. Two cleaning rollers are arranged in parallel on both sides below the outlet of the sewage pipe. A plurality of blades are distributed along the circumferential direction of the cleaning roller. The blades are arranged parallel to the axial direction of the cleaning roller. The blades on the two cleaning rollers facing each other are arranged staggeredly. The greywater falls from the outlet of the sewage pipe and impacts on the blades on the two cleaning rollers facing each other, driving the two cleaning rollers to rotate relatively.

[0010] By adopting the above technical solution, when the gray water falls from the outlet of the self-drainage pipe, it will impact the blades opposite to each other on the two cleaning rollers, thereby driving the two cleaning rollers to rotate relative to each other. The rotating cleaning rollers can wind and collect filamentous impurities such as hair, and the blades can cut such impurities in the gray water during the rotation process, thereby reducing the possibility of the impurities blocking the filter grille. In addition, the rotation of the cleaning rollers can also agitate the gray water, making the suspended solids in it evenly distributed and improving the treatment efficiency of the subsequent treatment unit. This method not only effectively reduces the cleaning frequency of the filtering unit, but also improves the operation stability of the entire system.

[0011] Optionally, a scraping frame is slidably arranged on the filter grille, and a driving member for driving the scraping frame to slide is further arranged in the filtering unit. The scraping frame includes two parallel driving bars and a scraping brush bar connected between the two driving bars. A limiting sliding groove is correspondingly formed on the filter grille for the driving bars. The end of the limiting sliding groove extends to the side wall of the filter grille. The driving bars are inserted into the limiting sliding groove and are slidably matched with the limiting sliding groove. The length direction of the limiting sliding groove is perpendicular to the axial direction of the cleaning roller. A plurality of scraping brush bars are distributed along the length direction of the driving bars, and the bristles of each scraping brush bar face the filter grille and are in contact with the surface of the filter grille.

[0012] By adopting the above technical solution, after the impurities in the gray water are intercepted by the filter grille, the driving member drives the scraping frame to move back and forth. The scraping brush bars are closely attached to the surface of the filter grille and can scrape off the impurities attached to the filter grille during the sliding process, improving the smoothness of the filter grille and enhancing the long-term operation stability of the system.

[0013] Optionally, the driving member includes a rack arranged on the top wall of the driving bar and an incomplete gear sleeved on the end of the rotating shaft of the cleaning roller. The two incomplete gears at the same side end are rotationally meshed on the same rack, and the two incomplete gears on the same rack are staggered.

[0014] By adopting the above technical solution, when the gray water flows into the purification tank, it impacts the blades on the cleaning rollers, prompting the two cleaning rollers to rotate relative to each other. When the cleaning rollers rotate, they drive the incomplete gears to periodically engage with the rack, thereby pushing the rack to slide. When one of the incomplete gears engages with the rack, the rack moves, and then the other incomplete gear engages with the rack. At this time, the previous incomplete gear disengages from the rack, and the rack moves in the opposite direction. The sliding of the rack drives the scraping frame to move along the guiding of the limiting sliding groove, enabling the scraping brush bars to effectively clean the surface of the filter grille. Due to the relative rotation of the two cleaning rollers, the incomplete gears on them act on the rack alternately, enabling the scraping frame to slide back and forth along the limiting sliding groove, thereby realizing the automatic cleaning of the filter grille and reducing the need for manual maintenance.

[0015] Optionally, a plug-in slot is opened on one side of the purification box, and two cleaning rollers are inserted into the purification box through the plug-in slot. A connecting plate is commonly sleeved on the rotating shafts on the same side of the two cleaning rollers. The connecting plate is plugged into the plug-in slot and connected to the purification box, and each cleaning roller is rotatably engaged with the connecting plate. A limiting ring is provided on the inner side wall of the purification box, and the end of the rotating shaft of the cleaning roller facing away from the connecting plate is plugged into the limiting ring and rotatably engaged with the limiting ring.

[0016] By adopting the above technical solution, the cleaning roller can be stably installed through the connecting plate and the limit ring, improving its positioning accuracy and rotation flexibility in the purification box. This structural design not only facilitates the disassembly and maintenance of the cleaning roller, but also effectively reduces the problem of decreased filtration efficiency caused by loosening or deviation of the cleaning roller during the gray water treatment process, thereby improving the operational reliability of the entire system.

[0017] Optionally, a driving gear disc is sleeved on the rotating shaft of the cleaning roller extending out of the connecting plate, a handle for facilitating manual rotation is provided on the side of the driving gear disc facing away from the connecting plate, and two adjacent driving gear discs are rotatably engaged with each other.

[0018] By adopting the above technical solution, when the cleaning roller is stuck or stops rotating due to excessive impurities, the manual rotation of the handle can drive the drive gear disc to rotate, thereby driving the cleaning roller to resume rotation, eliminating the stuck state and significantly improving the maintainability of the system. At the same time, the meshing transmission design between two adjacent drive gear discs can achieve synchronous reverse rotation of the cleaning roller, effectively enhancing the removal effect of impurities and further improving the cleaning efficiency of the system.

[0019] Optionally, an activated carbon filter element is provided in the adsorption unit, and guide keys are vertically provided on the opposite side walls in the purification box, the filter grille and the activated carbon filter element are slidably mounted on the guide keys, and positioning parts are respectively provided on the guide keys corresponding to the filter grille and the activated carbon filter element, and the positioning parts include a plug-in rod that slides through the guide key and the side wall of the purification box, a plug-in block arranged at one end of the plug-in rod facing the inside of the purification box, a connecting ring mounted on one end of the plug-in rod extending out of the purification box, and a spring mounted on the plug-in rod, and the spring is abutted between the outer wall of the purification box and the opposite side of the connecting ring.

[0020] By adopting the above technical solution, the filter grid and the activated carbon filter element are slidably mounted on the guide key, and fixed and disassembled by the positioning piece, which is convenient for regular maintenance and replacement. When disassembly is required, just pull the connecting ring to overcome the elastic force of the spring, so that the plug-in block is separated from the guide key and the side wall of the purification box, and the filter grid or the activated carbon filter element can be easily taken out. The operation is simple and efficient, and the stability of the long-term operation of the system is improved.

[0021] Optionally, the drainage pipe adopts an S-shaped water trap.

[0022] By adopting the above technical solution, the water seal trap with an S-shaped setting in the drain pipe can effectively prevent the backflow of odors. Since a certain amount of water can be retained inside the S-shaped water seal trap to form a water seal, it can block the odors in the purification tank from being emitted to the external environment through the drain pipe, improving the comfort of system use. At the same time, the S-shaped design helps to slow down the water flow rate, enabling the impurities remaining in the grey water to further settle under the action of gravity and improving the purification effect of the system.

[0023] In summary, this application includes at least one of the following beneficial technical effects: 1. After the grey water is discharged from the washbasin, it flows into the purification tank, where impurities are intercepted by the filtering unit. Subsequently, odors and heavy metal ions are removed in the adsorption unit, and finally, ultraviolet disinfection lamps are used for sterilization treatment in the disinfection unit. The purified grey water flows into the water collection tank through the drain pipe and can be pumped and used through the pumping mechanism. During this process, the floating ball drives the suspension frame to rise and fall with the change of the grey water level. When the suspension frame rises to a certain height, the pull rope lifts the water stop rubber plug to make the drain opening pass water, so that the cleaned water can be accumulated in the water collection tank for pumping and use. This system realizes the efficient recycling and reuse of train grey water, provides more loading space in the train for clean water, alleviates the tight water supply situation on the train, reduces the number of times of train docking for water storage and discharge, shortens the train docking time, reduces labor costs, and improves transportation efficiency; 2. When the grey water falls from the outlet of the sewage pipe, it impacts the blades opposite to each other on the two cleaning rollers, thereby driving the two cleaning rollers to rotate relative to each other. The rotating cleaning rollers can wind and roll filamentous impurities such as hair, and the blades can cut such impurities in the grey water during the rotation process, thereby reducing the possibility of impurity blockage of the filter grille. In addition, the rotation of the cleaning rollers can also stir the grey water, making the suspended substances in it evenly distributed and improving the treatment efficiency of the subsequent treatment unit. This method not only effectively reduces the cleaning frequency of the filtering unit but also improves the operation stability of the entire system; 3. After the impurities in the grey water are intercepted by the filter grille, the driving member drives the scraping frame to reciprocate. The scraping strip is closely attached to the surface of the filter grille and can scrape off the impurities attached to the filter grille during the sliding process, improving the smoothness of the filter grille and enhancing the long-term operation stability of the system. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 is the overall structural schematic diagram of the embodiment of this application.

[0025] Figure 2 is the sectional view showing the internal structure of the purification tank in the embodiment of this application.

[0026] Figure 3It is an exploded view showing the positional relationship among the cleaning roller, the filter grille, and the scraping rack in the embodiments of the present application.

[0027] Figure 4 It is a sectional view showing the connection relationship among the guiding key, the insertion rod, the insertion block, the connecting ring, and the spring in the embodiments of the present application.

[0028] Figure 5 It is a sectional view showing the connection relationship among the suspension rack, the transparent cover, the ultraviolet disinfection lamp, and the water stop rubber plug in the embodiments of the present application.

[0029] Explanation of reference numerals: 01, storage tank of the toilet; 02, cleaning faucet; 1, washbasin; 11, sewage pipe; 2, purification tank; 21, filtering unit; 211, scraping rack; 2111, driving strip; 2112, scraping brush strip; 212, driving member; 2121, rack; 2122, incomplete gear; 22, adsorption unit; 221, activated carbon filter element; 23, disinfection unit; 24, insertion slot; 25, limiting ring; 26, guiding key; 27, fixing rod; 271, positioning nut; 28, limiting rod; 281, water stop rubber plug; 282, pulling rope; 3, water collection tank; 31, drain pipe; 4, pumping mechanism; 41, first water suction pipe; 42, first water suction pump; 43, second water suction pipe; 44, second water suction pump; 5, filter grille; 51, limiting sliding groove; 6, cleaning roller; 61, blade; 62, connecting plate; 621, rubber pad; 63, driving gear disc; 631, handle; 7, positioning member; 71, insertion rod; 711, connecting rod; 72, insertion block; 73, connecting ring; 74, spring; 8, suspension rack; 81, float; 82, transparent cover; 821, ultraviolet disinfection lamp; 9, battery module; 91, power supply strip; 92, insulating block; 93, sealed charging block. Detailed implementation manners

[0030] The following further describes the present application in detail with reference to the Figures 1 - 5 accompanying drawings.

[0031] The embodiments of the present application disclose a system for recycling train greywater.

[0032] Refer to Figure 1 and Figure 2, A train greywater recycling system includes a washbasin 1, a purification tank 2, and a water collection tank 3. Among them, the purification tank 2 is located below the washbasin 1, and the two are connected through a sewage pipe 11. The water collection tank 3 is located below the purification tank 2. In this embodiment, the water collection tank 3 is fixed below the floor of the train washroom. The water collection tank 3 and the purification tank 2 are connected through a drain pipe 31. The drain pipe 31 in this embodiment adopts a water seal bend arranged in an S shape to prevent the return of odors. A pumping mechanism 4 is connected to the water collection tank 3. In the purification tank 2, a filtering unit 21, an adsorption unit 22, and a disinfection unit 23 are distributed from top to bottom in sequence.

[0033] Refer to Figure 1 and Figure 2 , After the greywater is discharged from the washbasin 1, it flows into the purification tank 2. The filtering unit 21 intercepts impurities, then the adsorption unit 22 removes odors and heavy metal ions, and finally the disinfection unit 23 performs sterilization treatment. The purified greywater flows into the water collection tank 3 through the drain pipe 31 and can be pumped and used as needed by the pumping mechanism 4.

[0034] Refer to Figure 2 and Figure 3 , The filtering unit 21 is detachably installed with a filtering grille 5 and a cleaning roller 6. The filtering grille 5 is used to intercept larger particle impurities. The cleaning roller 6 is located between the outlet of the sewage pipe 11 and the filtering grille 5 and is rotatably arranged on the purification tank 2. Two cleaning rollers 6 are arranged in parallel on both sides below the outlet of the sewage pipe 11. A number of blades 61 are fixedly distributed along the circumferential direction of each cleaning roller 6, and the blades 61 are arranged parallel to the axial direction of the cleaning roller 6. The blades 61 on the opposite sides of the two cleaning rollers 6 are staggered. When the greywater falls from the outlet of the sewage pipe 11 and impacts the blades 61 on the opposite sides of the two cleaning rollers 6, it can drive the two cleaning rollers 6 to rotate relative to each other. The blades 61 in this embodiment are made of stainless steel, and their edges are finely polished to ensure that the filtering grille 5 will not be damaged during the cleaning process.

[0035] Refer to Figure 2 and Figure 3 , A plug-in slot 24 is opened on one side of the purification tank 2, and the two cleaning rollers 6 are inserted into the purification tank 2 from the plug-in slot 24. A connecting plate 62 is rotatably sleeved on the same-side rotating shafts of the two cleaning rollers 6 through bearings. The connecting plate 62 is in plug-in fit with the plug-in slot 24 and is sealed and connected to the purification tank 2 through bolts and rubber gaskets 621. A limiting ring 25 is fixedly arranged on the inner side wall of the purification tank 2. The end of the rotating shaft of the cleaning roller 6 facing away from the connecting plate 62 is inserted into the limiting ring 25 and is in rotational fit with the limiting ring 25.

[0036] Refer to Figure 2, a driving gear disk 63 is fixedly sleeved on the rotating shaft of the cleaning roller 6 extending out of the connecting plate 62. A handle 631 is fixedly arranged on the side of the driving gear disk 63 away from the connecting plate 62, and two adjacent driving gear disks 63 are rotationally engaged with each other, which is convenient for the operator to perform manual cleaning.

[0037] Refer to Figure 3 , a scraping frame 211 is slidably arranged on the filter grille 5, and a driving member 212 for driving the scraping frame 211 to slide is further arranged in the filtering unit 21. The scraping frame 211 includes a driving strip 2111 and a scraping brush strip 2112. Two parallel limiting sliding grooves 51 are distributed along the axial direction of the cleaning roller 6 on the top surface of the filter grille 5. The length direction of the limiting sliding groove 51 is perpendicular to the axial direction of the cleaning roller 6, and the end of the limiting sliding groove 51 extends to the side wall of the filter grille 5. The driving strips 2111 correspond to the limiting sliding grooves 51 one by one, and are inserted into the limiting sliding grooves 51 and slidably matched with the limiting sliding grooves 51. A plurality of scraping brush strips 2112 are distributed along the length direction of the driving strip 2111. Each scraping brush strip 2112 is fixedly connected between two driving strips 2111, and the bristles of each scraping brush strip 2112 face the filter grille 5 and are in contact with the surface of the filter grille 5. In this embodiment, the scraping brush strip 2112 is made of nylon material, which has good wear resistance and flexibility, and can effectively remove the residues on the filter grille 5.

[0038] Refer to Figure 3 , the driving member 212 in this embodiment includes a rack 2121 and an incomplete gear 2122. The rack 2121 is along the length direction of the driving strip 2111 and is integrally formed on the top wall of the driving strip 2111. The incomplete gear 2122 is fixedly sleeved on the end of the rotating shaft of the cleaning roller 6, and two incomplete gears 2122 on the same side end are rotationally engaged on the same rack 2121, and the two incomplete gears 2122 on the same rack 2121 are staggered. When the incomplete gear 2122 on the end of the rotating shaft of one cleaning roller 6 is rotationally engaged on the rack 2121 and pushes the rack 2121 to slide in the direction away from the other cleaning roller 6, the incomplete gear 2122 on the other cleaning roller 6 rotates to the side away from the rack 2121. For example, the rack 2121 can be made of high-strength steel material, which has good wear resistance and can withstand long-term use without being easily damaged.

[0039] Refer to Figure 2 and Figure 4, an activated carbon filter element 221 is arranged inside the adsorption unit 22 for removing peculiar smell and heavy metal ions. Two vertical guiding keys 26 are fixedly arranged on the opposite side walls inside the purification tank 2, and both the filter grille 5 and the activated carbon filter element 221 are slidably sleeved on the four guiding keys 26. A plurality of positioning members 7 are respectively arranged on the guiding keys 26 corresponding to the installation positions of the filter grille 5 and the activated carbon filter element 221. Two positioning members 7 are distributed on both opposite sides of the filter grille 5, and the positioning members 7 on the activated carbon filter element 221 are installed in the same way as those on the filter grille 5.

[0040] Referring to Figure 3 and Figure 4 , the positioning member 7 includes an insertion rod 71, an insertion block 72, a connecting ring 73 and a spring 74. The insertion rods 71 commonly slide through the guiding key 26 and the side wall of the purification tank 2. The insertion block 72 is fixedly arranged at one end of the insertion rod 71 facing the inside of the purification tank 2, and a guiding surface is arranged on its top surface facing the inside of the purification tank 2 to facilitate the insertion of the filter grille 5 and the activated carbon filter element 221. The connecting ring 73 is fixedly sleeved on the end of the insertion rod 71 extending out of the purification tank 2. The spring 74 is sleeved on the insertion rod 71 and is abutted between the connecting ring 73 and the outer side wall of the purification tank 2. When the spring 74 is in a natural state, the insertion block 72 is inserted into the groove of the corresponding filter grille 5 or activated carbon filter element 221.

[0041] Referring to Figure 3 and Figure 4 , the ends of the two insertion rods 71 on the same side of the filter grille 5 are fixedly connected by a connecting rod 711. The connecting rod 711 is located outside the purification tank 2, which is convenient for simultaneously pulling the insertion rods 71 on one side to release the fixed state. A fixing rod 27 slidably passing through the connecting rod 711 is fixedly arranged on the outer side wall of the purification tank 2, and a positioning nut 271 is rotatably sleeved on the rod body of the fixing rod 27 passing through the connecting rod 711 by threads. During normal operation, the positioning nut 271 presses the connecting rod 711 tightly against the purification tank 2, reducing the possibility of the insertion block 72 loosening caused by the shaking during the train running and improving the purification and sealing effects.

[0042] Referring to Figure 2 and Figure 5 , a suspension frame 8 is slidably lifted inside the disinfection unit 23. A floating buoy 81 is fixedly arranged at the top of the suspension frame 8, and a transparent cover 82 is fixedly sealed at the bottom. An ultraviolet disinfection lamp 821 is installed inside the transparent cover 82. In this embodiment, the transparent cover 82 is made of quartz glass material, which has good light transmittance and high temperature resistance and can ensure the normal operation of the ultraviolet disinfection lamp 821. The setting of the suspension frame 8 enables the ultraviolet disinfection lamp 821 to automatically adjust its height according to the gray water level, so that the ultraviolet disinfection lamp 821 disinfects the gray water under the suspension frame 8.

[0043] Referring to Figure 2 and Figure 5, a plurality of vertical limiting rods 28 are fixedly arranged at the inner bottom of the purification tank 2. The plurality of limiting rods 28 are arranged around the inlet end of the drain pipe 31. A water-stop rubber plug 281 made of rubber is slidably sleeved on the plurality of limiting rods 28 together. The water-stop rubber plug 281 is in plug-in fit with the drain pipe 31. A nylon rope 282 is connected to the top of the water-stop rubber plug 281, and the top end of the rope 282 is fixed on the suspension frame 8.

[0044] Referring to Figure 2 and Figure 5 , in order to continuously supply power to the ultraviolet disinfection lamp 821, a battery module 9 is hermetically embedded on the outer side wall of the purification tank 2. A vertical power supply strip 91 is fixedly arranged on the side of the battery module 9 facing the inside of the purification tank 2. The power supply strip 91 is electrically connected to the battery module 9. An insulating block 92 is fixedly arranged at the bottom end of the power supply strip 91. The transparent cover 82 is slidably sleeved on the power supply strip 91, and a sealed charging block 93 electrically connected to the ultraviolet disinfection lamp 821 is embedded on the side wall of the transparent cover 82 facing the power supply strip 91. During the lifting and lowering process of the suspension frame 8, the sealed charging block 93 is in contact with the power supply strip 91, and contact power-on is achieved to continuously supply power to the ultraviolet disinfection lamp 821. When the suspension frame 8 drops to the lowest position, there is no accumulated gray water in the disinfection unit 23 at this time. At this time, the sealed charging block 93 slides to contact the insulating block 92, and the ultraviolet disinfection lamp 821 is powered off at this time, saving power resources.

[0045] Referring to Figure 1 , the pumping mechanism 4 includes a first suction pipe 41, a first suction pump 42, a second suction pipe 43 and a second suction pump 44. The first suction pipe 41 is connected to the storage tank 01 of the toilet in the bathroom and the water collection tank 3 through the first suction pump 42. The second suction pipe 43 is connected to the cleaning faucet 02 and the water collection tank 3 through the second suction pump 44. The cleaning water released by the cleaning faucet 02 can be used to clean the floor and wipe the tables and chairs.

[0046] The implementation principle of an embodiment of the present application for a train gray water recycling system is as follows: After the gray water is discharged from the washbasin 1, it flows into the filtering unit 21 in the purification tank 2. The filtering grille 5 and the cleaning roller 6 first intercept larger particle impurities; the gray water after preliminary filtration flows through the adsorption unit 22, and the activated carbon filter element 221 removes odors and heavy metal ions; the gray water after adsorption treatment flows through the disinfection unit 23, and the ultraviolet disinfection lamp 821 kills microorganisms; the treated gray water flows into the water collection tank 3 through the drain pipe 31, and finally the recycling is realized through the pumping mechanism 4.

[0047] By setting up the filtering unit 21, the adsorption unit 22 and the disinfection unit 23, the efficient treatment and recycling of greywater are achieved. The filter grille 5 and the cleaning roller 6 in the filtering unit 21 can effectively intercept larger particulate impurities. The activated carbon filter element 221 in the adsorption unit 22 can remove odors and heavy metal ions. The ultraviolet disinfection lamp 821 in the disinfection unit 23 can kill microorganisms, ensuring that the greywater meets the recycling standard. At the same time, by setting up a water seal, the reflux of odors is effectively prevented, improving the overall performance of the system. This system has a compact structure and occupies a small space, and can effectively solve the problems existing in the prior art and improve the train transportation efficiency.

[0048] The above are all the preferred embodiments of this application, and the protection scope of this application is not limited accordingly. Therefore, all equivalent changes made according to the structure, shape, and principle of this application should be covered within the protection scope of this application.

Claims

1. A system for recycling and reusing train grey water, characterized in that, It includes a washbasin (1), a purification tank (2) and a water collection tank (3). The purification tank (2) is located below the washbasin (1), and a sewage pipe (11) is communicatively arranged between the purification tank (2) and the drain outlet of the washbasin (1). The water collection tank (3) is located below the purification tank (2), and a drain pipe (31) is communicatively arranged between the purification tank (2) and the drain outlet of the purification tank (2). A pumping mechanism (4) for taking clean water as needed is connected to the water collection tank (3). In the purification tank (2), a filtering unit (21) for intercepting impurities, an adsorption unit (22) for removing odors and heavy metal ions, and a disinfection unit (23) for sterilization are sequentially distributed from top to bottom. Among them, a suspension rack (8) is slidably lifted in the disinfection unit (23) at the end of the purification tank (2). A floating buoy (81) is arranged at the top of the suspension rack (8), and a transparent cover (82) is arranged at the bottom of the suspension rack (8). An ultraviolet disinfection lamp (821) is installed in the transparent cover (82). A plurality of vertical limiting rods (28) are arranged at the inner bottom of the purification tank (2). The plurality of limiting rods (28) are arranged around the inlet end of the drain pipe (31). A water stop rubber plug (281) is slidably sleeved on the plurality of limiting rods (28) together. The water stop rubber plug (281) is in plug-in fit with the drain pipe (31). A pull rope (282) connecting the suspension rack (8) is arranged at the top of the water stop rubber plug (281).

2. The train grey water recycling system according to claim 1, characterized in that , A filter grille (5) is arranged in the filtering unit (21). A cleaning roller (6) is rotatably arranged above the filter grille (5) in the filtering unit (21). Two cleaning rollers (6) are arranged in parallel on both sides below the outlet of the sewage pipe (11). A plurality of blades (61) are distributed along the circumferential direction of the cleaning roller (6). The blades (61) are arranged parallel to the axial direction of the cleaning roller (6). The blades (61) of the two cleaning rollers (6) facing each other are arranged staggeredly. Grey water falls from the outlet of the sewage pipe (11) and impacts on the blades (61) of the two cleaning rollers (6) facing each other, driving the two cleaning rollers (6) to rotate relatively.

3. The train greywater recycling and utilization system according to claim 2, wherein , A scraping rack (211) is slidably arranged on the filter grille (5). A driving member (212) for driving the scraping rack (211) to slide is also arranged in the filtering unit (21). The scraping rack (211) includes two driving strips (2111) arranged in parallel and a scraping brush strip (2112) connected between the two driving strips (2111). Limiting sliding grooves (51) are formed on the filter grille (5) corresponding to the driving strips (2111). The ends of the limiting sliding grooves (51) extend to the side walls of the filter grille (5). The driving strips (2111) are inserted into the limiting sliding grooves (51) and are slidably matched with the limiting sliding grooves (51). The length direction of the limiting sliding grooves (51) is perpendicular to the axial direction of the cleaning roller (6). A plurality of scraping brush strips (2112) are distributed along the length direction of the driving strips (2111). The bristles of each scraping brush strip (2112) face the filter grille (5) and are in contact with the surface of the filter grille (5).

4. The train grey water recycling system according to claim 3, wherein , The driving member (212) includes a rack (2121) provided on the top wall of the driving bar (2111) and an incomplete gear (2122) sleeved on the end of the rotating shaft of the cleaning roller (6). Two incomplete gears (2122) located on the same side end rotate and engage with the same rack (2121), and the two incomplete gears (2122) located on the same rack (2121) are staggered.

5. The train grey water recycling system according to claim 4, characterized in that , One side of the purification tank (2) is provided with a plug-in slot (24). Two cleaning rollers (6) are inserted into the purification tank (2) from the plug-in slot (24). A connecting plate (62) is sleeved on the rotating shafts of the two cleaning rollers (6) on the same side. The connecting plate (62) is in plug-in fit with the plug-in slot (24) and is connected to the purification tank (2). Each cleaning roller (6) is rotatably fitted with the connecting plate (62). A limiting ring (25) is provided on the inner side wall of the purification tank (2). The end of the rotating shaft of the cleaning roller (6) facing away from the connecting plate (62) is inserted into the limiting ring (25) and is rotatably fitted with the limiting ring (25).

6. The train grey water recycling system according to claim 5, characterized in that , A driving gear disc (63) is sleeved on the rotating shaft of the cleaning roller (6) extending out of the connecting plate (62). A handle (631) for facilitating manual driving and rotation is provided on the side of the driving gear disc (63) facing away from the connecting plate (62), and adjacent two driving gear discs (63) rotate and engage with each other.

7. The system for recycling train grey water according to claim 2, wherein , An activated carbon filter element (221) is provided in the adsorption unit (22). Guide keys (26) are vertically provided on the opposite side walls in the purification tank (2). The filter grille (5) and the activated carbon filter element (221) are both slidably sleeved on the guide keys (26). Positioning members (7) are respectively provided on the guide keys (26) corresponding to the filter grille (5) and the activated carbon filter element (221). The positioning member (7) includes a plug-in rod (71) that commonly slides through the guide key (26) and the side wall of the purification tank (2), a plug-in block (72) provided at one end of the plug-in rod (71) facing the inside of the purification tank (2), a connecting ring (73) sleeved on the end of the plug-in rod (71) extending out of the purification tank (2), and a spring (74) sleeved on the plug-in rod (71). The spring (74) is abutted between the outer side wall of the purification tank (2) and the opposite side of the connecting ring (73).

8. The train grey water recycling system according to claim 1, wherein , The drain pipe (31) adopts a water seal bend arranged in an S shape.

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