Environment-friendly and energy-saving building water supply and drainage system

Abstract

The invention relates to the technical field of building drainage systems, in particular to an environment-friendly and energy-saving building water supply and drainage system which comprises a house body and a roof with an inclined slope arranged at the top end of the house body, and is characterized by further comprising water collecting and filtering mechanisms, and the two water collecting and filtering mechanisms are installed at the bottom ends of the inclined planes on the two sides of the roof correspondingly; water outlets in the bottom ends of the water collecting and filtering mechanisms are connected with water turbines installed at the bottom ends of the side walls of the house body through water guide pipes, water outlets of the water turbines are connected with a filtering box located on the house ground through sewer pipes, and the bottom ends of the filtering box are connected with a water storage box through water guide holes. The water collecting and filtering mechanism comprises a water collecting tank with an opening in the top end, and a rotating net cylinder with a filtering function is mounted at the opening of the water collecting tank through a rotating rod. Driving rollers are mounted at one end of the rotating rod and one end of a blade rotating shaft of the water turbine. The rainwater collecting device is good in rainwater collecting effect, rainwater can be utilized in various environments, and resources are saved.

Description

Technical Field

[0001] The present application relates to the technical field of building drainage systems, and in particular to an environmentally friendly and energy-saving building water supply and drainage system. Background Art

[0002] Currently, water supply and drainage systems are a general term for facilities that provide water and wastewater for daily life, production, municipal administration, and firefighting. These systems are essential components of any building and are a scientific means of recycling water, maximizing its use and offering energy-saving and environmentally friendly benefits.

[0003] Water supply and drainage are required in buildings. The water supply and drainage on the roof of the house can collect and reuse rainwater. In related technologies, house water supply and drainage involves rainwater collection and reuse, which simply drains the rainwater out of the floor through pipes and then flows into the municipal pipe network. The utilization rate of this rainwater is not high, and for rural families or suburbs, this rainwater often flows directly into the sewer or ditch without any use.

[0004] To this end, the present application provides an environmentally friendly and energy-saving building water supply and drainage system. Summary of the Invention

[0005] The purpose of this application is to provide an environmentally friendly and energy-saving building water supply and drainage system that can recycle and reuse rainwater, thereby saving resources.

[0006] In a first aspect, the environmentally friendly and energy-saving building water supply and drainage system provided by the present application adopts the following technical solution: it includes a building body, the top of the building body having a roof with an inclined slope, and also includes a water collection and filtering mechanism, wherein two water collection and filtering mechanisms are respectively installed at the bottom ends of the inclined surfaces on both sides of the roof, and the bottom outlets of the water collection and filtering mechanisms are connected to turbines installed at the bottom ends of the side walls of the building body through water guide pipes. The water outlets of the turbines are connected to a filter box located on the ground of the building through a downpipe, and the bottom end of the filter box is connected to a water storage tank through a water guide hole; The water collecting and filtering mechanism comprises a water collecting tank with an opening at the top, and a rotating net cylinder with a filtering function is installed at the opening of the water collecting tank through a rotating rod.

[0007] Preferably, one end of the rotating rod and one end of the blade rotating shaft of the turbine are both equipped with transmission rollers, and a transmission belt is connected between the two transmission rollers.

[0008] By adopting the above technical solution, the device can be used to filter and collect rainwater. During the collection process, the blades of the turbine rotate under the action of the water flow, and through the cooperation of the transmission roller and the transmission belt, the rotating net drum is driven to rotate, thereby filtering impurities in the rainwater and preventing impurities from accumulating on the outer surface of the rotating net drum.

[0009] On the second aspect, the environmentally friendly and energy-saving building water supply and drainage system provided by the present application adopts the following technical solution: a mesh cylinder cleaning mechanism is also provided inside the water collection tank, and the mesh cylinder cleaning mechanism includes a cleaning brush located below the rotating mesh cylinder and a double-headed telescopic rod horizontally fixed inside the water collection tank. Both ends of the double-headed telescopic rod are equipped with sliding blocks slidably connected to the bottom wall of the water collection tank, and a support rod is hinged between the top of the sliding block and the cleaning brush.

[0010] Preferably, both ends of the water collecting trough are provided with slag discharge holes, sealing blocks are slidably inserted into the slag discharge holes, and a transmission rod is fixedly connected between the sealing block and the corresponding sliding block.

[0011] Preferably, slide rails are installed on both sides of the inner wall of the water collecting tank, and the two ends of the cleaning brush are connected to the slide rails for sliding up and down.

[0012] By adopting the above technical solution, the rotating mesh drum can be cleaned, and when there is too much rain or the water storage tank is full, rapid drainage can be achieved by opening the sealing block on the water collection tank.

[0013] Preferably, the rotating net cylinder comprises a net cylinder with two ends connected and in a cylindrical shape, end covers are installed at both ends of the net cylinder, and a rotating rod passing through the two end covers is installed inside the net cylinder; Furthermore, a plurality of reinforcing ribs are installed on the rotating rod, and the reinforcing ribs are annularly supported on the inner wall of the mesh cylinder.

[0014] Preferably, the water storage tank is buried under the ground of the house; A water spray box is installed in the middle of the top of the roof, and a liquid pump is also installed on the ground of the house. A pumping pipe is connected between the water inlet of the liquid pump and the water tank, a return pipe is connected between the water outlet of the liquid pump and the water spray box, and the return pipe is also connected to an outlet pipe, and valves are installed on both the outlet pipe and the return pipe.

[0015] Preferably, a plurality of diversion pipes with one end open are evenly installed on both side walls of the roof, the water spray box is connected to the corresponding diversion pipes through a connecting pipe, and the cross section of the diversion pipe is triangular or arched.

[0016] Preferably, the interior of the filter box is filled with a quartz sand layer, an activated carbon layer, and a stone layer in sequence from top to bottom, so as to achieve secondary filtration of rainwater at a low cost.

[0017] In summary, this application includes at least one of the following beneficial technical effects: 1. The environmentally friendly and energy-saving building water supply and drainage system described in this application utilizes an inclined roof structure and a water collection and filtration mechanism. After rainwater falls onto the roof surface, some of the rainwater flows smoothly downward along the gutters between the diversion pipes and is collected after being filtered by the rotating mesh drum, thereby improving the quality of rainwater collection. And in the flow of rain, can drive the water turbine rotation, thereby driving the rotation of the mesh tube, so that the impurities filtered out is not easy to accumulate on the surface of the mesh tube, improve the filtering effect.

[0018] 2. The environmental protection and energy saving type building water supply and drainage system described in the application, through the setting of the mesh tube cleaning mechanism, the mesh tube can be quickly cleaned after a period of use, and rainwater can be discharged when the water storage tank is full.

[0019] 3. The environmental protection and energy saving type building water supply and drainage system described in the application, through the setting of the water storage tank, water pump, backwater pipe and water spraying box, rainwater cooled underground can be pumped and sprayed on the roof in hot summer to realize rapid cooling of the roof, thereby realizing indirect cooling of the room. At the same time, in winter, the underground water temperature is higher, which can be sprayed on the roof to indirectly improve the indoor temperature. At the same time, in daily life, collected rainwater can be used for plant irrigation and other functions, saving resources.

[0020] The rainwater collecting effect is good, the impurities in the rainwater are filtered, and the rainwater can be used in multiple environments, saving resources. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 is the overall structure schematic diagram of embodiment 1 of the application; Figure 2 Connection schematic diagram of the water collecting and filtering mechanism and the water turbine; Figure 3 is the sectional view of the water collecting and filtering mechanism; Figure 4 is the sectional view of the rotating mesh tube; Figure 5 is the overall structure schematic diagram of embodiment 3 of the application; Figure 6 is Figure 5 the local enlarged schematic diagram; Figure 7 is the structure schematic diagram of the water storage tank, filter tank and liquid pump; Figure 8 is the structure schematic diagram of the roof and its upper parts of embodiment 3 of the application.

[0022] Explanation of the accompanying symbols: 1. Water storage tank; 2. Filter box; 3. House body; 4. Roof; 5. Spray box; 501. Connecting pipe; 6. Diversion pipe; 7. Water collection and filtration mechanism; 701. Water collecting trough; 702. Rotating mesh cylinder; 7021. Mesh cylinder; 7022. Reinforcement rib; 7023. End cover; 703. Rotating rod; 704. Sealing block; 705. Transmission rod; 706. Cleaning brush; 707. Support rod; 708. Sliding block; 709. Double-headed telescopic rod; 8. Water suction pipe; 9. Liquid pump; 10. Water outlet pipe; 11. Valve; 12. Return pipe; 13. Downpipe; 14. Turbine; 15. Water diversion pipe; 16. Transmission belt; 17. Transmission roller. DETAILED DESCRIPTION

[0023] The following is combined with Figure 1 To the attached Figure 8 , further details of this application are given.

[0024] Example 1 Please pay attention to Figure 1 , Figure 2 , Figure 3 , an environmentally friendly and energy-saving building water supply and drainage system, including a house body 3, a roof 4 with an inclined slope at the top of the house body 3, such a roof 4 is not limited to having only two inclined slopes, it can also be one or more, as long as there is an inclined surface, it also includes a water collection and filtering mechanism 7, two water collection and filtering mechanisms 7 are respectively installed at the bottom ends of the inclined surfaces on both sides of the roof 4, the bottom water outlet of the water collection and filtering mechanism 7 is connected to a turbine 14 installed at the bottom end of the side wall of the house body 3 through a water guide pipe 15, the outlet of the turbine 14 is connected to a filter box 2 located on the ground of the house through a downpipe 13, the interior of the filter box 2 is filled with a quartz sand layer, an activated carbon layer, and a stone layer from top to bottom in sequence, with this design, various materials can be quickly found in rural areas, the use cost is low, and other materials such as filter elements can also be used to achieve better filtering effect, the bottom end of the filter box 2 is connected to the water storage tank 1 through a water guide hole; The water collecting and filtering mechanism 7 includes a water collecting trough 701 with an opening at the top. A rotating net cylinder 702 with a filtering function is installed at the opening of the water collecting trough 701 through a rotating rod 703. A bearing is installed at the connection between the water collecting trough 701 and the rotating net cylinder 702. When the turbine 14 drives the rotating net cylinder 702 to rotate, its friction resistance is small.

[0025] A transmission roller 17 is installed at one end of the rotating rod 703 and one end of the blade shaft of the turbine 14. A transmission belt 16 is connected between the two transmission rollers 17. When the turbine blades of the turbine 14 rotate, the rotation of the rotating net drum 702 can be achieved through the cooperation of the transmission roller 17 and the transmission belt 16. Transmission can also be carried out by using transmission gears and chains.

[0026] The working principle of this embodiment is as follows: when it rains, rainwater is collected by the inclined surface of the roof 4 and flows downward. After being filtered by the rotating mesh drum 702 on the water collection and filtering mechanism 7, it enters the water collection tank 701, and then flows into the turbine 14 through the water guide pipe 15, driving the water wheel blades in the turbine 14 to rotate. The rotating shaft of the water wheel blade drives the rotating mesh drum 702 to rotate through the transmission roller 17 and the transmission belt 16, so that the filtered impurities are not easily accumulated on the surface of the mesh drum. The impurities are directly thrown into the air and fall. The water flow continues to flow into the filter box 2 through the downpipe 13, and then enters the water storage tank 1 for collection after filtration.

[0027] Example 2 Comparative Example 1, referring to Figure 3 , Figure 4 Another embodiment of the present application is: an environmentally friendly and energy-saving building water supply and drainage system, including a building body 3, a roof 4 with an inclined surface at the top of the building body 3, and a water collection and filtering mechanism 7. Two water collection and filtering mechanisms 7 are respectively installed at the bottom ends of the inclined surfaces on both sides of the roof 4. The water outlets of the bottom ends of the water collection and filtering mechanisms 7 are connected to a turbine 14 installed at the bottom end of the side wall of the building body 3 through a water guide pipe 15. The water outlet of the turbine 14 is connected to a filter box 2 located on the ground of the building through a downpipe 13. The bottom end of the filter box 2 is connected to a water storage tank 1 through a water guide hole. The water collecting and filtering mechanism 7 comprises a water collecting tank 701 with an opening at the top, and a rotating net cylinder 702 with a filtering function is installed at the opening of the water collecting tank 701 via a rotating rod 703 .

[0028] A transmission roller 17 is installed at one end of the rotating rod 703 and one end of the blade rotating shaft of the turbine 14 , and a transmission belt 16 is connected between the two transmission rollers 17 .

[0029] The interior of the water collection tank 701 is also provided with a mesh cylinder cleaning mechanism, which includes a cleaning brush 706 located below the rotating mesh cylinder 702 and a double-headed telescopic rod 709 horizontally fixed inside the water collection tank 701. The double-headed telescopic rod 709 adopts a double-headed electric telescopic rod, and can also adopt two single-headed electric telescopic rods or pneumatic or hydraulic telescopic rods with similar functions. It itself has a certain waterproof performance. Both ends of the double-headed telescopic rod 709 are equipped with sliding blocks 708 that are slidably connected to the bottom wall of the water collection tank 701. A support rod 707 is hinged between the top of the sliding block 708 and the cleaning brush 706. The cleaning brush 706 is located on the side away from the roof 4 in the water collection tank 701. When rainwater falls normally, the probability of rainwater flushing the cleaning brush is reduced, thereby enhancing its service life.

[0030] Both ends of the water collecting trough 701 are provided with slag discharge holes, and sealing blocks 704 are slidably inserted into the slag discharge holes. A transmission rod 705 is fixedly connected between the sealing block 704 and the corresponding sliding block 708. When the output shaft of the double-axis telescopic rod 709 drives the sliding block 708 to move to both sides, the sealing block 704 can be driven to separate from the slag discharge hole through the transmission rod 705.

[0031] Slide rails are installed on the inner walls of both sides of the water collection tank 701, and the two ends of the cleaning brush 706 are connected to the slide rails for sliding up and down. Through the setting of the slide rails, it is ensured that when the cleaning brush 706 contacts the rotating mesh cylinder 702, it can stably clean the rotating mesh cylinder 702 with high firmness.

[0032] The rotating net cylinder 702 includes a net cylinder 7021 with two ends connected and in a cylindrical shape. End caps 7023 are installed at both ends of the net cylinder 7021. A rotating rod 703 is installed inside the net cylinder 7021 and passes through the two end caps 7023. A bearing is installed on the rotating rod 703. Furthermore, a plurality of reinforcing ribs 7022 are installed on the rotating rod 703 . The reinforcing ribs 7022 are annularly supported on the inner wall of the net cylinder 7021 , thereby improving the overall strength of the rotating net cylinder 702 and ensuring its stability during long-term operation.

[0033] The working principle of this embodiment is as follows: when it rains, rainwater is collected by the inclined surface of the roof 4 and flows downward. After being filtered by the rotating mesh drum 702 on the water collection and filtering mechanism 7, it enters the water collection tank 701, and then flows into the turbine 14 through the water guide pipe 15, driving the water wheel blades in the water turbine 14 to rotate. The rotating shaft of the water wheel blades drives the rotating mesh drum 702 to rotate through the transmission roller 17 and the transmission belt 16, so that the filtered impurities are not easily accumulated on the surface of the mesh drum. The impurities are directly thrown into the air and fall. The water flow continues to flow into the filter box 2 through the downpipe 13. After being filtered, it enters the water storage tank 1 for collection, which can achieve the cleaning of the rotating mesh drum 702. When there is too much rain or the water storage tank is full, the output shaft of the double-headed telescopic rod 709 can also drive the sealing block 704 to open the slag outlet on the water collection tank 701 to achieve rapid drainage. When cleaning the rotating mesh drum 702, the slag outlet is also open. At this time, the sewage generated by cleaning is also discharged through the slag outlet without the need for collection.

[0034] Example 3 Comparative Example 1, referring to Figure 5 , Figure 6 , Figure 7 、 Figure 8Another embodiment of the present application is: an environmentally friendly and energy-saving building water supply and drainage system, including a building body 3, a roof 4 with an inclined surface at the top of the building body 3, and a water collection and filtering mechanism 7. Two water collection and filtering mechanisms 7 are respectively installed at the bottom ends of the inclined surfaces on both sides of the roof 4. The water outlets of the bottom ends of the water collection and filtering mechanisms 7 are connected to a turbine 14 installed at the bottom end of the side wall of the building body 3 through a water guide pipe 15. The water outlet of the turbine 14 is connected to a filter box 2 located on the ground of the building through a downpipe 13. The bottom end of the filter box 2 is connected to a water storage tank 1 through a water guide hole. The water collecting and filtering mechanism 7 comprises a water collecting tank 701 with an opening at the top, and a rotating net cylinder 702 with a filtering function is installed at the opening of the water collecting tank 701 via a rotating rod 703 .

[0035] A transmission roller 17 is installed at one end of the rotating rod 703 and one end of the blade rotating shaft of the turbine 14 , and a transmission belt 16 is connected between the two transmission rollers 17 .

[0036] The water collection tank 701 is also provided with a mesh cylinder cleaning mechanism, which includes a cleaning brush 706 located below the rotating mesh cylinder 702 and a double-headed telescopic rod 709 horizontally fixed inside the water collection tank 701. Both ends of the double-headed telescopic rod 709 are equipped with sliding blocks 708 that are slidably connected to the bottom wall of the water collection tank 701, and a support rod 707 is hinged between the top of the sliding block 708 and the cleaning brush 706.

[0037] Both ends of the water collecting trough 701 are provided with slag discharge holes, and sealing blocks 704 are slidably inserted into the slag discharge holes. A transmission rod 705 is fixed between the sealing block 704 and the corresponding sliding block 708.

[0038] Slide rails are installed on the inner walls of both sides of the water collection tank 701, and the two ends of the cleaning brush 706 are connected to the slide rails for sliding up and down. The setting of the slide rails ensures that the cleaning brush 706 can stably clean the rotating net cylinder 702 when it contacts the rotating net cylinder 702.

[0039] The rotating net cylinder 702 includes a net cylinder 7021 with two ends connected and in a cylindrical shape. End caps 7023 are installed at both ends of the net cylinder 7021. A rotating rod 703 is installed inside the net cylinder 7021 and passes through the two end caps 7023. Furthermore, a plurality of reinforcing ribs 7022 are installed on the rotating rod 703 . The reinforcing ribs 7022 are annularly supported on the inner wall of the net cylinder 7021 , thereby improving the overall strength of the rotating net cylinder 702 and ensuring its stability during long-term operation.

[0040] The water tank 1 is buried under the ground of the house, and it is in repeated contact with the underground soil. By utilizing the underground constant temperature layer effect, the rainwater stored inside can achieve warmth in winter and coolness in summer. In order to enhance this effect, multiple heat conducting rods can be set in the water tank 1. One end of the heat conducting rod is inserted into the soil, and the other end of the heat conducting rod extends into the interior of the water tank 1 to enhance the heat exchange speed. A water spray box 5 is installed in the middle of the top of the roof 4, and a liquid pump 9 is also installed on the ground of the house. A water pumping pipe 8 is connected between the water inlet of the liquid pump 9 and the water tank 1, and a return pipe 12 is connected between the water outlet of the liquid pump 9 and the water spray box 5. The return pipe 12 is also connected to a water outlet pipe 10, and valves 11 are installed on both the water outlet pipe 10 and the return pipe 12.

[0041] A plurality of guide pipes 6 with one end open are evenly installed on both side walls of the roof 4. The water spray box 5 is connected to the corresponding guide pipe 6 through a connecting pipe 501. The cross-section of the guide pipe 6 is triangular or arched. The setting of the guide pipe 6 can achieve a certain sound insulation and noise reduction effect due to its hollow setting. When the collected rainwater is sprayed through it, the evaporation of rainwater is reduced, and the rainwater flows evenly on the roof 4, thereby achieving uniform heat dissipation or heating of the roof 4.

[0042] The working principle of this embodiment is as follows: when it rains, rainwater is collected through the inclined surface of the roof 4 and flows downward. After being filtered by the rotating mesh drum 702 on the water collection and filtering mechanism 7, it enters the water collection tank 701, and then flows into the turbine 14 through the water guide pipe 15, driving the water wheel blades in the water turbine 14 to rotate. The rotating shaft of the water wheel blades drives the rotating mesh drum 702 to rotate through the transmission roller 17 and the transmission belt 16, so that the filtered impurities are not easily accumulated on the surface of the mesh drum. The impurities are directly thrown into the air and fall. The water flow continues to flow into the filter box 2 through the downpipe 13, and then enters the water storage tank 1 for collection after filtration, so as to achieve the cleaning of the rotating mesh drum 702. When there is too much rain or the water storage tank is full, rapid drainage can be achieved by opening the sealing block 704 on the water collection tank 701.

[0043] In summer, the water collected in the water storage tank 1 is pumped out by the liquid pump 9 and sprayed into the guide pipe 6 through the water spray box 5 on the roof 4. Since the underground temperature is low in summer, the low-temperature rainwater in the water storage tank can quickly cool the roof, thereby indirectly cooling the interior of the house. In winter, the collected water in the water storage tank 1 is pumped out by the liquid pump 9 and sprayed into the guide pipe 6 through the water spray box 5 on the roof 4. Since the underground temperature is high in winter, the higher temperature rainwater in the water storage tank can quickly heat the roof, thereby indirectly raising the temperature inside the house. When rainwater is needed in normal times, it can also be discharged from the outlet pipe 10 through the liquid pump 9 to achieve multi-functional utilization such as washing vegetables and watering flowers.

[0044] The examples of this specific embodiment are all preferred embodiments of this application and are not intended to limit the scope of protection of this application. Identical components are represented by the same reference numerals. Therefore, any equivalent changes made based on the structure, shape, and principle of this application should be included in the scope of protection of this application.

Claims

1. An environmentally friendly and energy-saving building water supply and drainage system, comprising a building body (3), the top of which is provided with a roof (4) having an inclined slope, characterized in that: It also includes a water collecting and filtering mechanism (7), two water collecting and filtering mechanisms (7) are respectively installed at the bottom ends of the inclined surfaces on both sides of the roof (4), the water outlets at the bottom ends of the water collecting and filtering mechanisms (7) are connected to a turbine (14) installed at the bottom end of the side wall of the house body (3) through a water guide pipe (15), the water outlet of the turbine (14) is connected to a filter box (2) located on the ground of the house through a downpipe (13), and the bottom end of the filter box (2) is connected to a water storage tank (1) through a water guide hole; The water collecting and filtering mechanism (7) comprises a water collecting trough (701) with an opening at the top, and a rotating net cylinder (702) with a filtering function is installed at the opening of the water collecting trough (701) via a rotating rod (703).

2. The environmentally friendly and energy-saving building water supply and drainage system according to claim 1, characterized in that: One end of the rotating rod (703) and one end of the blade rotating shaft of the turbine (14) are both installed with a transmission roller (17), and a transmission belt (16) is connected between the two transmission rollers (17).

3. The environmentally friendly and energy-saving building water supply and drainage system according to claim 1, characterized in that: A net cylinder cleaning mechanism is also provided inside the water collecting tank (701); The net cylinder cleaning mechanism comprises a cleaning brush (706) located below the rotating net cylinder (702) and a double-headed telescopic rod (709) fixed horizontally inside the water collecting tank (701), wherein both ends of the double-headed telescopic rod (709) are provided with sliding blocks (708) slidably connected to the bottom wall of the water collecting tank (701), and a support rod (707) is hinged between the top end of the sliding block (708) and the cleaning brush (706).

4. The environmentally friendly and energy-saving building water supply and drainage system according to claim 3, characterized in that: Both ends of the water collecting trough (701) are provided with slag discharge holes, sealing blocks (704) are slidably inserted into the slag discharge holes, and a transmission rod (705) is fixedly connected between the sealing block (704) and the corresponding sliding block (708).

5. The environmentally friendly and energy-saving building water supply and drainage system according to claim 3, characterized in that: Slide rails are installed on both inner walls of the water collecting tank (701), and the two ends of the cleaning brush (706) are connected to the slide rails in an upward and downward sliding manner.

6. The environmentally friendly and energy-saving building water supply and drainage system according to claim 1, characterized in that: The rotating net cylinder (702) comprises a net cylinder (7021) with two ends connected and in a cylindrical shape, end caps (7023) being installed at both ends of the net cylinder (7021), and a rotating rod (703) passing through the two end caps (7023) being installed inside the net cylinder (7021); Furthermore, a plurality of reinforcing ribs (7022) are mounted on the rotating rod (703), and the reinforcing ribs (7022) are supported in an annular manner on the inner wall of the net cylinder (7021).

7. The environmentally friendly and energy-saving building water supply and drainage system according to claim 1, characterized in that: The water storage tank (1) is buried under the ground of the house; A water spray box (5) is installed at the middle position of the top of the roof (4), and a liquid pump (9) is also installed on the floor of the house. A water pump (8) is connected between the water inlet of the liquid pump (9) and the water storage tank (1), and a return pipe (12) is connected between the water outlet of the liquid pump (9) and the water spray box (5). The return pipe (12) is also connected to a water outlet pipe (10), and valves (11) are installed on both the water outlet pipe (10) and the return pipe (12).

8. The environmentally friendly and energy-saving building water supply and drainage system according to claim 7, characterized in that: A plurality of guide pipes (6) with one end open are evenly installed on both side walls of the roof (4); the water spray box (5) is connected to the corresponding guide pipe (6) via a connecting pipe (501); and the cross section of the guide pipe (6) is triangular or arched.

9. The environmentally friendly and energy-saving building water supply and drainage system according to claim 1, characterized in that: The interior of the filter box (2) is filled with a quartz sand layer, an activated carbon layer, and a stone layer in sequence from top to bottom.

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