Water-saving flushing system based on double water source recovery

Abstract

The utility model discloses a water -saving toilet flushing system based on double water source recovery, including rainwater collection module, water storage module and shower control module, the water storage module includes the water cabin and rainwater cabin, and the top of water cabin and rainwater cabin inner wall is provided with first ultrasonic level meter and second ultrasonic level meter respectively, the surface of rainwater cabin and water cabin is connected with first drain pipe and second drain pipe respectively, and the bottom of first drain pipe and second drain pipe is communicated with toilet flushing water pipe through three -way joint, the utility model relates to water -saving technical field. This water -saving toilet flushing system based on double water source recovery, through rainwater collection and shower water temperature control's double water source collection unit, has realized rainwater and shower cold water's high -efficient recovery, solved single water source system water supply limited, time and space distribution uneven problem, improved system water supply stability.

Description

Technical Field

[0001] This utility model relates to the field of water-saving technology, specifically a water-saving toilet flushing system based on dual water source recovery. Background Technology

[0002] Driven by both new urbanization and the construction of a water-saving society, the innovative development of building water resource recycling technology is of great significance as an important technical means to improve the efficiency of urban water resource utilization.

[0003] However, existing inventions in this field often exhibit the following characteristics: simple treatment systems using a single water source (rainwater or greywater only), and parallel architecture treatment systems employing separate treatment of rainwater and domestic greywater. Chinese patent CN217377605U discloses a building energy-saving rainwater harvesting device that is easy to maintain. However, this single-source system, relying solely on rainwater, has limited water supply and uneven spatial and temporal distribution, making it difficult to guarantee water supply stability. While the separate parallel architecture offers relatively independent processing units, it cannot achieve coordinated optimization across multiple water sources, resulting in low overall system energy efficiency. Regardless of whether it's a single architecture or a separate design, existing technologies generally lack the ability to intelligently respond to dynamic changes in building water load. These problems severely restrict the promotion and application of related water-saving technologies.

[0004] Therefore, in view of the above-mentioned shortcomings, the present invention makes the following improvements. Utility Model Content

[0005] To address the shortcomings of existing technologies, this utility model provides a water-saving toilet flushing system based on dual water source recovery, which solves the problems mentioned in the background technology.

[0006] To achieve the above objectives, this utility model is implemented through the following technical solution: a water-saving toilet flushing system based on dual water source recovery, including a rainwater collection module, a water storage module, and a shower control module;

[0007] The water storage module includes a residual water tank and a rainwater tank. The top of the inner walls of the residual water tank and the rainwater tank are respectively equipped with a first ultrasonic level gauge and a second ultrasonic level gauge. The surfaces of the rainwater tank and the residual water tank are respectively connected to a first drain pipe and a second drain pipe. The bottom ends of the first drain pipe and the second drain pipe are connected to a toilet flushing water pipe through a T-joint.

[0008] The shower control module includes an outer sleeve and a shower head located at one end of the outer sleeve. An electric three-way valve is installed inside the outer sleeve, and the three channels of the electric three-way valve are respectively connected to a water supply pipe, a water outlet pipe, and a return pipe. One end of the return pipe is connected to the top surface of the waste water chamber through a waste water recovery component. One end of the water outlet pipe is connected to the water inlet of the shower head. A temperature sensor is installed inside the water outlet pipe.

[0009] Preferably, both the first and second drain pipes are equipped with solenoid valves, the flushing water pipe is equipped with a check valve, and the residual water tank is equipped with a main controller on its front.

[0010] Preferably, the waste water recovery assembly includes a booster pump, one end of the return pipe is connected to the inlet of the booster pump, and the outlet of the booster pump is connected to the top surface of the waste water tank through a fixed pipe.

[0011] Preferably, a drain pipe is connected to one side of the bottom surface of the rainwater tank, and a drain valve is installed inside the drain pipe. Both the rainwater tank and the residual water tank are connected to one side of an overflow pipe, and the ends of the two overflow pipes are connected by a connecting pipe.

[0012] Preferably, the rainwater collection module includes a cyclone separator and a collection pipe connected to the overflow port of the cyclone separator. One side of the surface of the collection pipe is connected to one side of the rainwater chamber through a water guide pipe. The inside of the collection pipe is provided with a filter layer, which adsorbs impurities and particulate matter that have not been removed.

[0013] Preferably, the filter layer is a multi-layer stacked structure, with an activated carbon layer, a quartz sand layer, and a pebble layer arranged sequentially from top to bottom, and the three layers are filled sequentially from top to bottom along the fluid flow direction of the collection pipe.

[0014] Beneficial effects

[0015] This invention provides a water-saving toilet flushing system based on dual water source recovery. Compared with the prior art, it has the following advantages:

[0016] (1) Through the dual water source collection unit of rainwater collection and shower water temperature control, the efficient recycling of rainwater and shower cold water is realized, which solves the problem of limited water supply and uneven spatial and temporal distribution of a single water source system and improves the stability of the system water supply.

[0017] (2) By combining a composite dual-chamber water storage structure and intelligent treatment technology with purification methods such as cyclone sand separator, ultraviolet germicidal lamp and nano silver antibacterial coating, the water quality meets the standards while achieving synergistic optimization of dual water sources, avoiding the defects of low energy efficiency of the separate parallel architecture, and improving the efficiency of water resource utilization.

[0018] (3) The three-level priority water supply strategy reduces the reliance on municipal toilet flushing water by 30%-45%, and the modular design facilitates installation and maintenance, reduces application costs, and meets the needs of building a water-saving society. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of this utility model;

[0020] Figure 2 This is a schematic diagram of the structure of the water storage module of this utility model;

[0021] Figure 3 This is a schematic diagram of the shower control module of this utility model;

[0022] Figure 4 This is a cross-sectional view of the collection tube structure of this utility model.

[0023] In the diagram: 1. Rainwater collection module; 11. Cyclone sand separator; 12. Collection pipe; 13. Filter layer; 14. Water guide pipe; 2. Water storage module; 21. Residual water tank; 22. Rainwater tank; 23. First ultrasonic level gauge; 24. Second ultrasonic level gauge; 25. First drain pipe; 26. Second drain pipe; 27. Toilet flushing water pipe; 3. Shower control module; 31. Outer pipe; 32. Shower head; 33. Electric three-way valve; 34. Water supply pipe; 35. Water outlet pipe; 36. Return pipe; 37. Temperature sensor; 38. Residual water recovery component; 381. Booster pump; 382. Fixed pipe; 4. Sewage pipe; 5. Overflow pipe; 6. Connecting pipe; 7. Ultraviolet germicidal lamp; 8. Sewer; 9. Main controller. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] The present invention provides three technical solutions, specifically including the following embodiments:

[0026] Example 1

[0027] Please see Figures 1 to 4 As shown, the water-saving toilet flushing system based on dual water source recovery includes a rainwater collection module 1, a water storage module 2, and a shower control module 3.

[0028] The water storage module 2 includes a residual water tank 21 and a rainwater tank 22. An ultraviolet germicidal lamp 7 is installed at the bottom of the inner wall of the rainwater tank 22. The rainwater tank 22 has a volume of 150L, ​​a larger capacity to fully store irregular rainfall. The residual water tank 21 has a volume of 80L, a smaller capacity to match the stable daily cold shower water recovery volume. This differentiated design is based on the characteristics of the two water sources: firstly, rainwater collection is greatly affected by weather but the volume of water received at one time is large, requiring a larger storage space; secondly, although the amount of residual shower water generated is stable, the volume of water recovered at one time is limited. The rainwater tank 22 is made of food-grade PE. Made of high-quality materials, the bottom is designed with a 15° inclined sedimentation structure. The inner wall of the residual water tank 21 is coated with a nano-silver antibacterial coating to ensure the safety of the stored water. Both the residual water tank 21 and the rainwater tank 22 are equipped with polyurethane insulation layers, which can reduce heat loss by about 80%, ensuring the normal operation of the system in low-temperature environments. The top of the residual water tank 21 and the rainwater tank 22 are respectively equipped with a first ultrasonic level gauge 23 and a second ultrasonic level gauge 24. The first ultrasonic level gauge 23 and the second ultrasonic level gauge 24 are of model TSL300. The surfaces of the rainwater tank 22 and the residual water tank 21 are respectively connected to a first drain pipe 25 and a second drain pipe 26. The first drain pipe 25 and the bottom of the second drain pipe 26 are connected to the flushing water pipe 27 through a T-joint. The first drain pipe 25 and the second drain pipe 26 are both equipped with solenoid valves. The two solenoid valves are controlled by different control buttons and are both located on the side wall of the toilet tank. The flushing water pipe 27 is equipped with a check valve. The water outlet of the flushing water pipe 27 is located in the flushing area of ​​the inner wall of the toilet and is not connected to the water tank. It is an independent pipe. The front of the residual water tank 21 is equipped with a main controller 9, which uses a high-performance microcontroller as the main controller 9. The microcontroller model is STM32L431.

[0029] The shower control module 3 includes an outer sleeve 31 and a shower head 32 disposed at one end of the outer sleeve 31. A start switch is provided at the connection between the shower head 32 and the outer sleeve 31 to control the opening and closing of the temperature sensor 37. An electric three-way valve 33 is disposed inside the outer sleeve 31, and its three ports are respectively connected to a water supply pipe 34, a water outlet pipe 35, and a return pipe 36. One end of the return pipe 36 is connected to the top surface of the waste water chamber 21 via a waste water recovery assembly 38. The water recycling assembly 38 includes a booster pump 381. One end of the return pipe 36 is connected to the inlet of the booster pump 381. The booster pump 381 is designed to increase the water pressure for rapid delivery to the interior of the residual water tank 21. The outlet of the booster pump 381 is connected to the top surface of the residual water tank 21 via a fixed pipe 382. One end of the outlet pipe 35 is connected to the inlet of the shower head 32. A temperature sensor 37, model LM75A, is installed inside the outlet pipe 35.

[0030] When a person needs a hot shower, they press the start switch to activate the temperature sensor 37. Simultaneously, shower water is transported through the water supply pipe 34 to the outlet pipe 35 and then sprayed out by the shower head 32. During this process, the temperature sensor 37 inside the water supply pipe 34 monitors the water temperature in real time. When the temperature sensor 37 detects that the water temperature is lower than X degrees Celsius (X is a preset value), the temperature signal is transmitted to the main controller 9. The main controller 9 receives the signal and immediately issues an instruction to control the electric three-way valve 33 to drive the valve core to rotate in a very short time, guiding the water below X degrees Celsius to the return pipe 36. It also controls the booster pump 381 to start, and the booster pump 381 transports the remaining water in the return pipe 36 through the fixed pipe 382 to the remaining water tank 21 for storage, waiting for later use. When the temperature sensor 37 detects that the water temperature is higher than X degrees Celsius, it controls the valve core to rotate to the initial position, and the water flows out normally from the outlet pipe 35 and the shower head 32.

[0031] When the user does not need to shower with hot water, there is no need to turn on the temperature sensor 37. The water will flow normally from the water supply pipe 34, the water outlet pipe 35 and the shower head.

[0032] The rainwater chamber 22 collects rainwater after filtering out particulate matter. The residual water chamber 21 and the rainwater chamber 22 together form a backup water source for flushing toilets. The first ultrasonic level gauge 23 and the second ultrasonic level gauge 24 emit ultrasonic waves to the liquid surface inside the residual water chamber 21 and the rainwater chamber 22 through probes, respectively. The liquid level is calculated by receiving the reflected echoes. The first ultrasonic level gauge 23 and the second ultrasonic level gauge 24 feed back the calculated liquid level value to the main controller 9. The main controller 9 calculates the total liquid level value ZYW, which is the sum of the real-time liquid level values ​​collected by the first ultrasonic level gauge 23 and the second ultrasonic level gauge 24.

[0033] If ZYW < YS, then the toilet tank will flush the toilet. Here, YS is a preset threshold.

[0034] If ZYW≥YS, the toilet will be flushed using the backup water source. At this time, the main controller 9 will turn on the indicator light, which is located on the side wall of the toilet tank to remind the user to prioritize the backup water source. The user controls the solenoid valve inside the first drain pipe 25 to open via the corresponding button. The rainwater inside the rainwater tank 22 will then be discharged through the first drain pipe 25, the T-joint, and the flushing water pipe 27 to flush the toilet. During the flushing process, the user can close the solenoid valve inside the first drain pipe 25 at any time as needed to stop flushing. If the amount of rainwater is insufficient (unable to meet the flushing water demand) during the use of rainwater for flushing, the user can close the first drain pipe 25 and control the solenoid valve inside the second drain pipe 26 to open via the corresponding button. This will allow the remaining water inside the residual water tank 21 to be discharged through the second drain pipe 26, the T-joint, and the flushing water pipe 27 for toilet flushing.

[0035] In summary, a three-tiered water supply strategy has been implemented, prioritizing rainwater, followed by surplus water, with municipal water as a backup.

[0036] Example 2

[0037] Based on Example 1, see Figures 1 to 2 As shown, a drain pipe 4 is connected to one side of the bottom surface of the rainwater tank 22, and a drain valve is installed inside the drain pipe 4. Both the rainwater tank 22 and the residual water tank 21 are connected to one side of an overflow pipe 5. The ends of the two overflow pipes 5 are connected to each other through a connecting pipe 6. The overflow pipe 5 and the connecting pipe 6 are connected to the sewer 8.

[0038] When the rainwater tank 22 and the excess water tank 21 are saturated, the excess rainwater and excess water are discharged into the sewer 8 through the overflow pipe 5. The sediment at the bottom of the inner wall of the rainwater tank 22 can be cleaned periodically by the sewage valve, and the sediment is discharged into the sewer 8 through the sewage pipe 4.

[0039] Example 3

[0040] Based on Example 2, see Figure 1 and Figure 4 As shown, the rainwater collection module 1 includes a cyclone separator 11 and a collection pipe 12 connected to the overflow port of the cyclone separator 11. One side of the surface of the collection pipe 12 is connected to one side of the rainwater chamber 22 through a water guide pipe 14. The collection pipe 12 is made of HDPE pipe, which has the characteristics of corrosion resistance and high sealing performance. The cyclone separator 11 is wall-mounted on the exterior wall of the building. The inside of the collection pipe 12 is provided with a filter layer 13. The filter layer 13 is a multi-layer stacked structure, with an activated carbon layer, a quartz sand layer, and a small pebble layer arranged sequentially from top to bottom. The three layers are filled sequentially from top to bottom along the fluid flow direction of the collection pipe 12.

[0041] Rainwater enters the cyclone separator 11, where particles ≥80μm are pre-removed. It then passes through the filter layer 13, which consists of an activated carbon layer, a quartz sand layer, and a pebble layer, to adsorb any remaining impurities and particulate matter. After the impurities are removed, the rainwater passes through the collection pipe 12 and the water guide pipe 14 into the rainwater chamber 22 for storage, awaiting subsequent use.

[0042] Furthermore, any content not described in detail in this specification is existing technology known to those skilled in the art.

[0043] The embodiments of the utility model have been described in detail above, but the content described is only a preferred embodiment of the utility model and should not be considered as limiting the scope of the utility model. All equivalent changes and improvements made in accordance with the claims of the utility model should still fall within the patent coverage of the utility model.

Claims

1. A water-saving toilet flushing system based on dual water source recovery, characterized in that: It includes a rainwater harvesting module (1), a water storage module (2), and a shower control module (3); The water storage module (2) includes a residual water tank (21) and a rainwater tank (22). The top of the inner wall of the residual water tank (21) and the rainwater tank (22) are respectively provided with a first ultrasonic level gauge (23) and a second ultrasonic level gauge (24). The surfaces of the rainwater tank (22) and the residual water tank (21) are respectively connected to a first drain pipe (25) and a second drain pipe (26). The bottom ends of the first drain pipe (25) and the second drain pipe (26) are connected to a toilet flushing water pipe (27) through a three-way connector. The shower control module (3) includes an outer tube (31) and a shower head (32) disposed at one end of the outer tube (31). An electric three-way valve (33) is disposed inside the outer tube (31), and the three channels of the electric three-way valve (33) are respectively connected to a water supply pipe (34), a water outlet pipe (35) and a return pipe (36). One end of the return pipe (36) is connected to the top surface of the residual water chamber (21) through a residual water recovery component (38). One end of the water outlet pipe (35) is connected to the water inlet of the shower head (32), and a temperature sensor (37) is disposed inside the water outlet pipe (35).

2. The water-saving toilet flushing system based on dual water source recovery according to claim 1, characterized in that: Solenoid valves are installed inside the first drain pipe (25) and the second drain pipe (26), a check valve is installed inside the flushing water pipe (27), and a main controller (9) is installed on the front of the residual water tank (21).

3. The water-saving toilet flushing system based on dual water source recovery according to claim 1, characterized in that: The residual water recovery assembly (38) includes a booster pump (381), one end of the return pipe (36) is connected to the inlet of the booster pump (381), and the outlet of the booster pump (381) is connected to the top surface of the residual water tank (21) through a fixed pipe (382).

4. The water-saving toilet flushing system based on dual water source recovery according to claim 1, characterized in that: One side of the bottom surface of the rainwater tank (22) is connected to a sewage pipe (4), and a sewage valve is installed inside the sewage pipe (4). One side of both the rainwater tank (22) and the residual water tank (21) is connected to an overflow pipe (5), and the ends of the two overflow pipes (5) are connected by a connecting pipe (6).

5. The water-saving toilet flushing system based on dual water source recovery according to claim 1, characterized in that: The rainwater collection module (1) includes a cyclone separator (11) and a collection pipe (12) connected to the overflow port of the cyclone separator (11). One side of the surface of the collection pipe (12) is connected to one side of the rainwater chamber (22) through a water guide pipe (14). The inside of the collection pipe (12) is provided with a filter layer (13), which adsorbs impurities and particulate matter that have not been removed.

6. The water-saving toilet flushing system based on dual water source recovery according to claim 5, characterized in that: The filter layer (13) is a multi-layer stacked structure, with an activated carbon layer, a quartz sand layer and a pebble layer arranged sequentially from top to bottom, and the three layers are filled sequentially from top to bottom along the fluid flow direction of the collection pipe (12).

Images