Building outer wall rainwater filtering system combined with plant purification

Abstract

The invention provides a building outer wall rainwater filtering system combined with plant purification, and relates to the technical field of resource utilization, the building outer wall rainwater filtering system comprises a plurality of vertical greening units, and rainwater collecting units are connected below the vertical greening units; an electric energy recovery assembly is arranged in the rainwater collection unit, a rainwater storage box is connected through the rainwater collection unit, and a display screen assembly is arranged on one side of the rainwater collection unit; telescopic connecting assemblies are arranged on the backs of the rainwater collecting unit and the display screen assembly. Connecting assemblies are arranged on the backs of the vertical greening units. The device is fixed to the outer wall of a building, rainwater is filtered for use, the rainwater filtering effect can be further improved by matching with the vertical greening unit, green plants are naturally cultured, and the rainwater is utilized to the maximum extent through photosynthesis, oxygen emission, carbon dioxide absorption and air purification in the later period; and various indexes can be displayed through the display screen assembly, so that the public can intuitively know the significance of resource utilization, and the environmental awareness of the public is enhanced.

Description

Technical Field

[0001] The present invention relates to the technical field of resource utilization, and particularly to a rainwater filtration system for building exterior walls combined with plant purification. Background Art

[0002] Rainwater, as a precious water resource, has been emphasized worldwide. Currently, there are engineering practices for rainwater collection and utilization abroad, and relevant standards have been formulated. Therefore, corresponding rainwater collection systems have been installed for buildings. The rainwater collection and utilization system can be divided into roof rainwater collection and ground rainwater collection.

[0003] Most of the existing rainwater collection and utilization systems use multi-layer filtration devices to filter rainwater, collect the filtered rainwater, and make the collected rainwater recyclable. The recycled rainwater can be used for irrigation, flushing toilets, and secondary water supply for floors. As a water resource in nature, the role of rainwater is far more than that. Therefore, simply using a simple filtration system to filter and collect rainwater for use cannot fully utilize the greater value of rainwater. Summary of the Invention

[0004] The present invention provides a rainwater filtration system for building exterior walls combined with plant purification to solve the problem of low rainwater utilization rate in the prior art.

[0005] The present invention provides a rainwater filtration system for building exterior walls combined with plant purification, including a plurality of vertical greening units for filtering and purifying air.

[0006] A rainwater collection unit is arranged below the vertical greening unit and is used for collecting the filtered rainwater.

[0007] An electric energy recovery component is arranged inside the rainwater collection unit and is used for generating and recycling electricity using rainwater. A rainwater storage tank for storing water is connected through the rainwater collection unit.

[0008] A display screen component is arranged on one side of the rainwater collection unit and is used for displaying real-time data.

[0009] A sensor component is electrically connected to the display component and is distributed at multiple positions in the filtration system. The sensor component is used for monitoring the real-time data of the filtration system.

[0010] Telescopic connection components for fixedly connecting to the wall are arranged on the backs of both the rainwater collection unit and the display screen component.

[0011] A connection component for connecting and fixing to the parapet wall is arranged on the back of the vertical greening unit.

[0012] Further, the vertical greening unit includes a planting trough, a filtering layer, and a rainwater collection trough arranged in sequence;

[0013] The bottom of the planting trough is a bottom plate with filtering holes. Coconut coir and perlite for cultivating green plants are placed in the planting trough, and a variety of green plants planted in the planting trough form a greening network;

[0014] The vertical greening unit is a sealed high-transparency UVC acrylic plate. An IP68-level waterproof light-emitting strip is arranged in the planting trough, and the waterproof light-emitting strip is used to illuminate the interior of the vertical greening unit;

[0015] The sensor assembly includes a rain sensor for monitoring rainfall, a temperature and humidity sensor for monitoring the temperature and humidity of the plant growth environment, and an air quality sensor for monitoring the concentration of pollutants in the air. The rain sensor, the temperature and humidity sensor, and the air quality sensor are respectively arranged above and on the surface of the vertical greening unit.

[0016] Further, the filtering layer includes a plurality of partition plates, a gravel layer, an activated carbon layer, and a biofilm layer arranged in sequence inside the planting trough;

[0017] The gravel layer, the activated carbon layer, and the biofilm layer are respectively arranged between every two partition plates. Filtering holes are provided on the partition plates; the partition plates are also high-transparency UVC acrylic plates;

[0018] The rainwater collection trough is formed between the lowermost partition plate and the lower end surface of the planting trough. The sensor assembly further includes a water quality sensor arranged in the rainwater collection trough.

[0019] Further, the lower end surface of each planting trough is connected to a drain pipe communicating with the rainwater collection trough. The lower ends of a plurality of drain pipes are jointly connected to a flowing water pipe. Both sides of the flowing water pipe are fixedly connected to both sides of the rainwater collection unit through a first support frame. The lower end of the drain pipe is connected to a water diversion pipe penetrating into the interior of the rainwater collection unit. Inclined plates inclined towards the drainage outlet of the flowing water pipe are arranged on both sides inside the flowing water pipe.

[0020] Further, the rainwater collection unit is a transparent primary collection box. The electric energy recovery assembly includes a turbine arranged inside the primary collection box, a generator arranged inside the primary collection box, and an energy storage battery supported by a support frame and located outside the primary collection box. The waterproof light-emitting strip is also arranged inside the primary collection box;

[0021] The turbine is a Pelton turbine and the water wheel is located below the water diversion pipe. The generator is a permanent magnet synchronous generator, and the energy storage battery has a lithium battery structure;

[0022] The generator is supported by a support plate and sealed by a waterproof cover. Above the support frame, there is a protective box for protecting the energy storage battery, and a lifting door is slidably arranged at the opening on the outside of the protective box;

[0023] Among them, the power generation power is estimated by the following formula:

[0024] P = η·ρ·g·Q·H

[0025] Where: η: system efficiency; ρ: density of water; g: acceleration due to gravity; Q: flow rate; H: head height;

[0026] The sensor assembly further includes an energy sensor disposed on the power recovery assembly.

[0027] Further, the rainwater storage tank includes two connected storage tanks, and the upper part between the two storage tanks is connected by a pipeline;

[0028] A water pump is arranged below the support plate. The drainage end of the water pump is connected to one of the storage tanks through a connecting pipe, and the water pump is powered by the energy storage battery and an external power supply;

[0029] The storage tank has an explosion-proof tempered glass structure, and the sensor assembly further includes another water quality sensor disposed inside the storage tank.

[0030] Further, the display screen assembly includes a waterproof LED display screen and an electronic control box disposed on the back of the LED display screen. The display screen assembly is powered by the energy storage battery and an external power supply, and a data acquisition and transmission module is disposed inside the electronic control box;

[0031] Among them, the data acquisition and transmission module transmits multiple sensor data to the LED display screen for display in real time through wireless communication technology, and the data acquisition and transmission module is integrated in the intelligent controller;

[0032] The intelligent controller includes a main control chip, a sensor interface, a communication module, a power management module, and a storage module.

[0033] Further, the main control chip is a Raspberry Pi embedded processor, the sensor interface adopts one or more combinations of I2C, SPI, and UART, and the communication module uses Wi-Fi to transmit data;

[0034] The LED display screen is wirelessly connected to a rain sensor, a temperature and humidity sensor, an air quality sensor, and an energy sensor respectively through an intelligent controller.

[0035] Furthermore, the telescopic connection assembly includes a fixed sleeve rod, a threaded telescopic rod threadedly connected to the fixed sleeve rod, and a connection plate for connecting to the outer wall.

[0036] A number of mounting holes are provided on the connection plate. An L-shaped rotating handle extending inward is provided on the inner side surface of the connection plate, and an anti-slip pattern is provided on the side surface of the connection plate close to the wall.

[0037] Furthermore, the connection assembly includes a connecting rod connected to a number of vertical greening units and a number of connecting pieces provided inside the connecting rod.

[0038] The connecting piece includes a fixed rod connected to the connecting rod, a sliding rod slidably connected to the fixed rod, and a clamping plate provided at the lower end of the sliding rod and on the side away from the connecting rod.

[0039] A number of the mounting holes are also provided on the clamping plate. A first connecting plate is provided on the upper end surface of the fixed rod close to the clamping plate. A second connecting plate is provided on the side of the upper end of the sliding rod away from the connecting rod. A threaded rod threadedly connected to the first connecting plate is rotatably connected to the second connecting plate.

[0040] The building exterior wall rainwater filtration system combined with plant purification provided by the present invention fixes the device on the exterior wall by using the connection assembly and the telescopic connection assembly. When it rains, the rainwater waters the green plants. The watered rainwater flows through the bottom plate with filtering holes of the planting trough to the multi-layered filter layer for filtration, improving the quality of the rainwater, thereby completing the filtration of the rainwater. The filtered rainwater will flow downward into the rainwater collection unit and drive the electric energy recovery component to generate electricity and store it for use. The rainwater in the rainwater collection unit will be pumped into the rainwater storage tank through a water pump for storage and use. After the rainy days, the green plants will adsorb and purify carbon dioxide and other organic substances in the air through photosynthesis and generate oxygen, thereby improving the air purification effect and further improving the utilization rate of rainwater.

[0041] The rainwater filtration system for building exterior walls combined with plant purification provided by the present invention enables the intuitive observation of the entire process of rainwater filtration before, during, and after the filtration by the device. Meanwhile, through the electrical signal connection between the LED display screen and multiple sensors, it can intuitively display various data indicators, enabling the public to intuitively understand the significance of resource utilization. Moreover, people or children below can directly observe the principle of rainwater filtration and utilization, playing a guiding role, improving the common knowledge of the masses, and enhancing the environmental protection awareness of the public. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0043] Figure 1 It is a schematic flow chart of the rainwater filtration system for building exterior walls combined with plant purification provided by the embodiments of the present invention.

[0044] Figure 2 It is a three-dimensional structure schematic diagram of the rainwater filtration system for building exterior walls combined with plant purification provided by the embodiments of the present invention.

[0045] Figure 3 It is a connection cross-sectional view of the vertical greening unit and the rainwater collection unit of the rainwater filtration system for building exterior walls combined with plant purification provided by the embodiments of the present invention.

[0046] Figure 4 It is a partial three-dimensional structure schematic diagram of the rainwater filtration system for building exterior walls combined with plant purification provided by the embodiments of the present invention.

[0047] Figure 5 It is a cross-sectional view of the electric energy recovery component of the rainwater filtration system for building exterior walls combined with plant purification provided by the embodiments of the present invention.

[0048] Figure 6 It is a three-dimensional structure schematic diagram of the display screen component of the rainwater filtration system for building exterior walls combined with plant purification provided by the embodiments of the present invention.

[0049] Figure 7 It is a partial internal three-dimensional structure schematic diagram of the rainwater filtration system for building exterior walls combined with plant purification provided by the embodiments of the present invention.

[0050] In the figure: 1, planting trough; 2, filter layer; 3, rainwater collection trough; 4, waterproof light-emitting strip; 5, partition board; 6, gravel layer; 7, activated carbon layer; 8, biofilm layer; 9, drain pipe; 10, flowing water pipe; 11, water diversion pipe; 12, inclined plate; 13, primary collection box; 14, turbine; 15, generator; 16, support frame; 17, energy storage battery; 18, support plate; 19, protection box; 20, lifting door; 21, water pump; 22, storage box; 23, pipeline; 24, connecting pipe; 25, LED display screen; 26, electric control box; 27, threaded telescopic rod; 28, connecting plate; 29, mounting hole; 30, L-shaped rotating handle; 31, connecting rod; 32, fixing rod; 33, sliding rod; 34, buckle plate; 35, first connecting plate; 36, second connecting plate; 37, threaded rod; 38, fixed sleeve rod; 39, first support frame. Detailed implementation manners

[0051] To make the objectives, technical solutions and advantages of the present invention clearer, the technical solutions in the present invention will be clearly and completely described below with reference to the accompanying drawings in the present invention. Apparently, the described embodiments are some but not all of the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in the present invention without making creative efforts shall fall within the protection scope of the present invention.

[0052] As Figures 1 - 3 shown, the building exterior wall rainwater filtration system combined with plant purification provided by the embodiment of the present invention includes a plurality of vertical greening units, and the vertical greening units are used for filtering and purifying air;

[0053] The vertical greening unit includes a planting trough 1, a filter layer 2 and a rainwater collection trough 3 arranged in sequence; the bottom of the planting trough 1 is a bottom plate with filter holes, which facilitates the rainwater that has watered the green plants to flow into the lower filter layer 2 for filtration treatment. Coconut coir and perlite for cultivating green plants are placed in the planting trough 1. Coconut coir and perlite are suitable for plant growth and do not affect the downward flow of rainwater. A variety of green plants planted in the planting trough 1 form a greening network; among them, the green plants adopt green plants such as reeds, calamus, green radish and ivy that are relatively easy to cultivate and filter and purify.

[0054] Specifically, after the green plants are irrigated by rainwater, they grow normally. After rainy days, the green plants will adsorb and purify carbon dioxide and other organic substances in the air through photosynthesis, and will generate oxygen, thereby improving the air purification effect and further improving the utilization rate of rainwater;

[0055] The vertical greening unit is a sealed high-transparency UVC acrylic board. Inside the planting trough 1, there is a waterproof light strip 4 with an IP68 rating. The waterproof light strip 4 is used to illuminate the inside of the vertical greening unit. The combination of the high-transparency UVC acrylic board and the waterproof light strip 4 with an IP68 rating facilitates the public to directly observe the rainwater filtration steps, thereby understanding the rainwater filtration principle, enhancing the overall environmental awareness of citizens, and also playing a guiding role for children.

[0056] A sensor assembly, which is electrically connected to the display assembly and is distributed at multiple positions in the filtration system; the sensor assembly is used to monitor the real-time data of the filtration system.

[0057] Among them, the sensor assembly includes a rain sensor for monitoring rainfall, a temperature and humidity sensor for monitoring the temperature and humidity of the plant growth environment, and an air quality sensor for monitoring the concentration of pollutants in the air. The rain sensor, the temperature and humidity sensor, and the air quality sensor are respectively arranged above and on the surface of the vertical greening unit.

[0058] Furthermore, as Figure 3 shown, the filter layer 2 includes a plurality of partition plates 5, a gravel layer 6, an activated carbon layer 7, and a biofilm layer 8 that are sequentially arranged inside the planting trough 1; among them, the gravel layer 6 adopts a combined structure of quartz sand and gravel. The quartz sand is arranged in the upper layer, which can effectively intercept large particle suspensions and has the effects of high hardness, corrosion resistance, and good chemical stability. The gravel is laid in the lower layer to support the quartz sand layer and prevent blockage. Specifically, the thickness of the gravel layer is 10 - 20 cm, which is adjusted according to the rainwater flow and pollution degree, and is laid in layers, with fine sand in the upper layer and coarse sand and gravel in the lower layer.

[0059] The activated carbon layer 7 adopts coconut shell activated carbon, which can efficiently adsorb organic substances and some heavy metals. Specifically, the thickness of the activated carbon layer is 5 - 10 cm, which is adjusted according to the water quality and adsorption requirements. The activated carbon particles are evenly laid to ensure uniform water flow through.

[0060] The biofilm layer 8 adopts biological fillers, which are porous fillers made of polyethylene (PE) or polypropylene (PP), and are used to provide a carrier for microbial attachment, promote biodegradation, and further improve the water quality; specifically, the thickness of the biofilm layer is 10 - 15 cm, which is adjusted according to the water quality and degradation requirements. The biological fillers are evenly laid to ensure uniform water flow through, and the microbial community is replenished regularly to maintain the biodegradation efficiency.

[0061] The gravel layer 6, the activated carbon layer 7, and the biofilm layer 8 are respectively arranged between every two partitions 5. The partitions 5 are provided with filtering holes; the partitions 5 are also made of high-transparency UVC acrylic plates, which facilitate direct observation of the filtering situation. When filtering rainwater, the rainwater first enters the planting tank 1 to irrigate the green plants to ensure their survival. The irrigated rainwater first flows through the bottom plate with filtering holes of the planting tank 1 to the gravel layer 6, and the large-particle suspended matters (such as sediment, leaves, etc.) in the rainwater are filtered by the gravel layer 6, serving as the first barrier of the filtering system to protect the subsequent filtering layers from being blocked. Then, it flows through the partition 5 with filtering holes below to the activated carbon layer 7 to adsorb the organic matters, heavy metals, and some dissolved pollutants in the rainwater. It serves as the second barrier of the filtering system to improve the water quality. After that, the water flow will continue to flow downward to the biofilm layer 8 to degrade the organic matters and nutrients such as nitrogen and phosphorus in the rainwater. It serves as the third barrier of the filtering system to further improve the water quality, thus completing the filtration of rainwater. The filtered rainwater will flow downward for the next step of power generation;

[0062] A rainwater collection tank 3 for collecting filtered rainwater is formed between the lowermost partition 5 and the lower end face of the planting tank 1. The sensor assembly further includes a water quality sensor arranged in the rainwater collection tank 3 for monitoring the quality of the filtered water;

[0063] Such as Figure 4 、 Figure 5 and Figure 7 As shown, a rainwater collection unit is arranged below the vertical greening unit and is used for collecting filtered rainwater. An electric energy recovery component is arranged inside the rainwater collection unit and is used for generating electricity and recycling the rainwater. The lower end face of each planting tank 1 is connected with a drain pipe 9 communicating with the rainwater collection tank 3. The lower ends of several drain pipes 9 are jointly connected with a flowing water pipe 10. Both sides of the flowing water pipe 10 are fixedly connected with the two sides of the rainwater collection unit through the first support frame 39. The lower end of the drain pipe 9 is connected with a water inlet pipe 11 penetrating into the interior of the rainwater collection unit. Both sides inside the flowing water pipe 10 are provided with inclined plates 12 inclined towards the drainage outlet of the flowing water pipe 10;

[0064] When the rainwater is filtered, it will flow into the rainwater collection tank 3 and be discharged through the drain pipe 9. Multiple drain pipes 9 will discharge the water source into the flowing water pipe 10 and finally flow into the water inlet pipe 11, so as to be discharged downward through the water inlet pipe 11. The power generation operation of the electric energy recovery component is realized by using the gravity of the water flow. By using the arrangement of the inclined plates 12, the water source flowing into the flowing water pipe 10 can be quickly discharged into the water inlet pipe 11, increasing the flow rate and the falling gravity, and better enabling the electric energy recovery component to perform the power generation operation.

[0065] The rainwater collection unit is a transparent primary collection box 13. The electric energy recovery component includes a turbine 14 arranged inside the primary collection box 13, a generator 15 arranged inside the primary collection box 13, and an energy storage battery 17 supported by a support frame 16 and located outside the primary collection box 13. The operating principle of the electric energy recovery component is as follows: The filtered rainwater flows through the water diversion pipe 11 to the water wheel of the turbine 14, thereby driving the turbine blades to rotate by the impact of the water flow. The rotation of the turbine 14 drives the generator 15 to convert mechanical energy into electric energy. The electric energy output by the generator 15 is stored in the energy storage battery 17 through a rectifier and a charging controller. The stored electric energy is used by the sensors, lighting, intelligent controller, and other electronic components of the system. The vertical drop between the rainwater and the turbine 14 is 1 - 2 meters. Both the rectifier and the charging controller are integrated with the energy storage battery 17.

[0066] A waterproof light strip 4 is also arranged inside the primary collection box 13. By using the structural principle that the waterproof light strip 4 can illuminate the inside of the primary collection box 13, it is convenient for people or children below to intuitively observe the working principle of the electric energy recovery component, playing a guiding role and improving the common knowledge of the public.

[0067] The turbine 14 is a Pelton turbine and the water wheel is located below the water diversion pipe 11. Compared with other types of turbines, the Pelton turbine is more suitable for high head and low flow scenarios, and the blades of the turbine are made of corrosion-resistant materials to adapt to the rainwater environment. The generator 15 is a permanent magnet synchronous generator, which has high efficiency and is suitable for small power generation devices. The energy storage battery 17 is a lithium battery structure, which has a high energy density. Compared with other battery structures, the lithium battery is suitable for small energy storage systems.

[0068] The generator 15 is supported by a support plate 18 and sealed by a waterproof cover to prevent damage to the generator 15. A protective box 19 for protecting the energy storage battery 17 is arranged above the support frame 16. A lifting door 20 is slidably arranged at the opening outside the protective box 19. The setting of the lifting door 20 can realize the opening and closing of the protective box 19, so as to replace or repair the energy storage battery 17.

[0069] The power generation power is estimated by the following formula:

[0070] P = η·ρ·g·Q·H

[0071] Where: η: The system efficiency is usually 0.5 - 0.7; ρ: The density of water is 1000 kg / m 3 ; g: The acceleration of gravity is 9.81 m / s 2 ; Q: Flow rate m 3 / s; H: Head height m;

[0072] Specifically, when Q = 0.5 L / s, H = 3 m, and η = 0.6:

[0073] P = 0.6 * 1000 * 9.81 * 0.0005 * 3 ≈ 8.8 W

[0074] The sensor assembly further includes an energy sensor disposed on the power recovery assembly. The energy sensor is installed at the output end of the power recovery assembly for monitoring the power generation.

[0075] As Figures 1 - 2 shown, a rainwater storage tank is connected through the rainwater collection unit. The rainwater storage tank includes two communicating storage tanks 22, and the upper part between the two storage tanks 22 is communicated through a pipeline 23; a water pump 21 is disposed below the support plate 18, and the drainage end of the water pump 21 is connected to one of the storage tanks 22 through a connecting pipe 24. When the filtered rainwater enters the primary collection tank 13, the water pump 21 is used to pump the filtered water inside to the first storage tank 22. When the water volume in the first storage tank 22 reaches the height of the pipeline 23, the water will automatically flow into the second storage tank 22. It should be noted that the number of storage tanks 22 can be set according to requirements;

[0076] The water pump 21 is powered by the energy storage battery 17 and the external power supply; when the energy storage battery 17 is fully charged, the water pump 21 can be powered by the energy storage battery 17. When the power of the energy storage battery 17 is low, the external power supply is directly connected to the water pump 21. The switching between the two modes can greatly improve the resource utilization rate;

[0077] The storage tank 22 is made of explosion-proof tempered glass. The sensor assembly further includes another water quality sensor disposed inside the storage tank 22 for monitoring the water quality of the final stored water. The use of the explosion-proof tempered glass structure can visually observe the current water storage volume of the storage tank 22.

[0078] As Figure 1 、 Figure 2 and Figure 6 shown, the display screen assembly is disposed on one side of the rainwater collection unit and is used to display real-time data; the display screen assembly includes a waterproof LED display screen 25 and an electric control box 26 disposed on the back of the LED display screen 25. The display screen assembly is powered by the energy storage battery 17 and the external power supply. When the energy storage battery 17 is fully charged, it can be powered by the energy storage battery 17. When the power of the energy storage battery 17 is low, the external power supply is directly connected. The switching between the two modes can greatly improve the resource utilization rate. A data acquisition and transmission module is disposed inside the electric control box 26;

[0079] Among them, the data acquisition and transmission module transmits the data of multiple sensors to the LED display screen 25 for real-time display through wireless communication technology. The data acquisition and transmission module is integrated in the intelligent controller. The intelligent controller includes a main control chip, a sensor interface, a communication module, a power management module, and a storage module.

[0080] Furthermore, the main control chip is a RaspberryPi embedded processor. The sensor interface adopts one or more combinations of I2C, SPI, and UART. The communication module uses Wi-Fi to transmit data.

[0081] In a specific implementation manner, the LED display screen 25 is wirelessly connected to a rain sensor, a temperature and humidity sensor, an air quality sensor, and an energy sensor through the intelligent controller respectively. The rain sensor is used to monitor the rainfall, and the rainwater collection amount is displayed on the LED display screen 25. A rain sensor of the Texas Instruments TMP117 model is adopted. The water quality sensor is used to monitor the purified water quality (such as pH value, turbidity, heavy metal content), and the purification efficiency is displayed on the LED display screen 25. A water quality sensor of the Atlas Scientific EZO-pH Circuit model is adopted. The air quality sensor is used to monitor the concentrations of pollutants such as PM1.0, PM2.5, and PM10 in the air, and the air quality index is displayed on the LED display screen 25. A air quality sensor of the Plantower PMS5003 model is adopted. The energy sensor is used to monitor the power generation amount of the power recovery component, and the energy generation amount is displayed on the LED display screen 25. An energy sensor of the INA219 High-Side DC Current Sensor model is adopted. Various data indicators are intuitively displayed through the LED display screen 25, so that the public can intuitively understand the significance of resource utilization by this device, thereby enhancing the public's environmental protection awareness.

[0082] As Figure 4 shown, telescopic connection components for fixedly connecting to the wall are provided on both the rainwater collection unit and the back of the display screen assembly. The telescopic connection component includes a fixed sleeve rod 38, a threaded telescopic rod 27 threadedly connected to the fixed sleeve rod 38, and a connection disk 28 for connecting to the outer wall.

[0083] When installing the device, rotate the threaded telescopic rod 27 to rotate it within the fixed sleeve rod 38 until the connection disk 28 is adjusted to a state that fits the outer wall.

[0084] A plurality of mounting holes 29 are provided on the connection disk 28. An L-shaped rotating handle 30 extending inward is provided on the inner side surface of the connection disk 28. An anti-slip pattern is provided on the side surface of the connection disk 28 close to the wall.

[0085] After the connection plate 28 is fitted against the wall, holes are drilled in alignment with the mounting holes 29 and corresponding fixing screws are inserted to fix the device. The inwardly extending L-shaped rotating handle 30 facilitates the rotation of the threaded telescopic rod 27, and the anti-slip pattern can improve the anti-slip effect when the connection plate 28 contacts the wall.

[0086] like Figures 3 - 4 As shown, a connection assembly for connecting and fixing with the parapet is provided at the back of the vertical greening unit, and the connection assembly includes a connection rod 31 connected with a plurality of vertical greening units and a plurality of connection members arranged inside the connection rod 31; the vertical greening unit in the device is fixed to the parapet through the connection assembly;

[0087] The connecting member includes a fixed rod 32 connected to the connecting rod 31, a sliding rod 33 slidably connected to the fixed rod 32, and a gusset plate 34 arranged at the lower end of the sliding rod 33 and away from the connecting rod 31;

[0088] The pinch plate 34 is also provided with a plurality of mounting holes 29. A first connecting plate 35 is provided on the side of the upper end surface of the fixing rod 32 close to the pinch plate 34. A second connecting plate 36 is provided on the side of the upper end of the sliding rod 33 away from the connecting rod 31. A threaded rod 37 threadedly connected to the first connecting plate 35 is rotatably connected to the second connecting plate 36.

[0089] When fixing, adjust the position of the gusset plate 34 according to the thickness of the parapet. During adjustment, rotate the threaded rod 37 to drive the sliding rod 33 to slide and adjust in the fixing rod 32, so that it is adjusted to the degree of fit with the wall. Then, align several installation holes 29 to punch holes in the wall, and insert the corresponding fixing screws to achieve preliminary fixation of the device.

[0090] The working principle and use process of the present invention:

[0091] By using the connection components and the telescopic connection components to fix the device on the outer wall, when it rains, rainwater first enters the planting trough 1 to water the green plants to ensure their survival. The watered rainwater first flows through the bottom plate with filtering holes at the bottom of the planting trough 1 to the multi-layer filter layer 2 for filtration. The rainwater quality is improved after filtration, thereby completing the filtration of rainwater. The filtered rainwater will flow downward to the inside of the rainwater collection unit and drive the electric energy recovery component to generate electricity and store it for use. The rainwater in the rainwater collection unit will be pumped to the inside of the rainwater storage box by the water pump 21 for storage and use. After the rainy day, the green plants will absorb and purify the carbon dioxide and other organic matter in the air through photosynthesis, and will produce oxygen, thereby improving the air purification effect, thereby further improving the utilization rate of rainwater.

[0092] And during the entire process before, during, and after the device filters rainwater, not only can the filtering process be visually observed, but also through the electrical signal connection between the LED display screen 25 and multiple sensors, various data indicators can be visually displayed, enabling the public to intuitively understand the significance of resource utilization through this device. Moreover, people or children below can visually observe the principle of rainwater filtering and utilization, playing a guiding role, improving the general knowledge of the public, and thus enhancing the public's environmental protection awareness.

[0093] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit them. Although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments or perform equivalent replacements for some of the technical features. However, such modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A building exterior wall rainwater filtration system combined with plant purification, characterized in that: include: A plurality of vertical greening units, wherein the vertical greening units are used to filter and purify the air; A rainwater collection unit, which is disposed below the vertical greening unit and is used to collect filtered rainwater; An electric energy recovery component, which is arranged inside the rainwater collection unit and is used to utilize rainwater for power generation and recovery, and a rainwater storage tank for storing water is connected through the rainwater collection unit; A display screen assembly, the display screen assembly is arranged on one side of the rainwater collection unit and is used to display real-time data; A sensor assembly, the sensor assembly is electrically connected to the display assembly and is distributed in multiple locations in the filtration system; the sensor assembly is used to monitor real-time data of the filtration system; The rainwater collection unit and the back of the display screen assembly are both provided with a telescopic connection assembly for fixed connection with a wall; The back of the vertical greening unit is provided with a connection component for connecting and fixing with the parapet.

2. The building exterior wall rainwater filtration system combined with plant purification according to claim 1 is characterized in that: The vertical greening unit comprises a planting trough (1), a filtering layer (2) and a rainwater collection trough (3) which are arranged in sequence; The bottom of the planting trough (1) is a bottom plate with filtering holes, and coconut bran and perlite for cultivating green plants are placed in the planting trough (1). The various green plants planted in the planting trough (1) form a greening network; The vertical greening unit is a sealed high-transmittance UVC acrylic plate, and an IP68-level waterproof luminous strip (4) is arranged in the planting trough (1), and the waterproof luminous strip (4) is used to illuminate the interior of the vertical greening unit; The sensor assembly includes a rainfall sensor for monitoring rainfall, a temperature and humidity sensor for monitoring the temperature and humidity of the plant growth environment, and an air quality sensor for monitoring the concentration of pollutants in the air. The rainfall sensor, temperature and humidity sensor, and air quality sensor are respectively arranged above and on the surface of the vertical greening unit.

3. The building exterior wall rainwater filtration system combined with plant purification according to claim 2 is characterized in that: The filtering layer (2) comprises a plurality of partitions (5) sequentially arranged inside the planting trough (1), as well as a sand and gravel layer (6), an activated carbon layer (7) and a biofilm layer (8); The sand and gravel layer (6), the activated carbon layer (7) and the biofilm layer (8) are respectively arranged between every two of the partitions (5), and filtering holes are opened on the partitions (5); the partitions (5) are also high-transmittance UVC acrylic plates; The rainwater collecting trough (3) is formed between the lowermost partition (5) and the lower end surface of the planting trough (1), and the sensor assembly also includes a water quality sensor arranged in the rainwater collecting trough (3).

4. The building exterior wall rainwater filtration system combined with plant purification according to claim 3 is characterized in that: The lower end surface of each planting trough (1) is connected to a drainage pipe (9) which is in communication with the rainwater collecting trough (3); the lower ends of several drainage pipes (9) are commonly connected to a water flow pipe (10); the two sides of the water flow pipe (10) are fixedly connected to the two sides of the rainwater collecting unit via a first support frame (39); the lower end of the drainage pipe (9) is connected to a water diversion pipe (11) which runs through the interior of the rainwater collecting unit; and inclined plates (12) which are inclined toward the drainage outlet of the water flow pipe (10) are provided on both sides of the interior of the water flow pipe (10).

5. The building exterior wall rainwater filtration system combined with plant purification according to claim 4 is characterized in that: The rainwater collection unit is a transparent primary collection box (13); the electric energy recovery component comprises a turbine (14) arranged inside the primary collection box (13), a generator (15) arranged inside the primary collection box (13), and an energy storage battery (17) supported by a support frame (16) and located outside the primary collection box (13); the waterproof luminous strip (4) is also arranged inside the primary collection box (13); The turbine (14) is a Pelton turbine and the water wheel is located below the water diversion pipe (11); the generator (15) is a permanent magnet synchronous generator; and the energy storage battery (17) is a lithium battery structure; The generator (15) is supported by a support plate (18), the generator (15) is sealed by a waterproof cover, a protection box (19) for protecting the energy storage battery (17) is arranged above the support frame (16), and a lifting door (20) is slidably arranged at the opening outside the protection box (19); The power generation is estimated by the following formula: P=η·ρ·g·Q·H Where: η: system efficiency (usually 0.5-0.7); ρ: water density (1000kg / m 3 ); g: acceleration due to gravity (9.81 m / s 2 ); Q: flow rate (m 3 / s); H: water head height (m); The sensor component also includes an energy sensor arranged on the electric energy recovery component.

6. The building exterior wall rainwater filtration system combined with plant purification according to claim 5 is characterized in that: The rainwater storage tank comprises two connected storage tanks (22), and the tops of the two storage tanks (22) are connected via a pipe (23); A water pump (21) is provided below the support plate (18), a drainage end of the water pump (21) is connected to one of the storage boxes (22) via a connecting pipe (24), and the water pump (21) is powered by the energy storage battery (17) and an external power source; The storage box (22) is an explosion-proof tempered glass structure, and the sensor assembly also includes another water quality sensor arranged inside the storage box (22).

7. The building exterior wall rainwater filtration system combined with plant purification according to claim 6 is characterized in that: The display screen assembly comprises a waterproof LED display screen (25) and an electric control box (26) arranged at the back of the LED display screen (25); the display screen assembly is powered by the energy storage battery (17) and an external power supply; a data acquisition and transmission module is arranged inside the electric control box (26); The data acquisition and transmission module transmits multiple sensor data to the LED display screen (25) in real time for display through wireless communication technology, and the data acquisition and transmission module is integrated in the intelligent controller; The intelligent controller includes a main control chip, a sensor interface, a communication module, a power management module and a storage module.

8. The building exterior wall rainwater filtration system combined with plant purification according to claim 7 is characterized in that: The main control chip is a Raspberry Pi embedded processor, the sensor interface adopts one or more combinations of I2C, SPI, and UART, and the communication module uses Wi-Fi to transmit data; The LED display screen (25) is wirelessly connected to the rainfall sensor, the temperature and humidity sensor, the air quality sensor and the energy sensor respectively through the intelligent controller.

9. The building exterior wall rainwater filtration system combined with plant purification according to claim 1 is characterized in that: The telescopic connection assembly comprises a fixed sleeve rod (38), a threaded telescopic rod (27) threadedly connected to the fixed sleeve rod (38), and a connection plate (28) for connecting to an external wall; The connection plate (28) is provided with a plurality of mounting holes (29), the inner side surface of the connection plate (28) is provided with an L-shaped rotating handle (30) extending inwardly, and a side surface of the connection plate (28) close to the wall is provided with anti-slip grooves.

10. The building exterior wall rainwater filtration system combined with plant purification according to claim 9, characterized in that: The connection assembly comprises a connection rod (31) connected to a plurality of vertical greening units, and a plurality of connection pieces arranged inside the connection rod (31); The connecting member comprises a fixed rod (32) connected to the connecting rod (31), a sliding rod (33) slidably connected to the fixed rod (32), and a gusset plate (34) arranged at the lower end of the sliding rod (33) and away from the connecting rod (31); The buckle plate (34) is also provided with a plurality of mounting holes (29); a first connecting plate (35) is provided on the upper end surface of the fixing rod (32) close to the buckle plate (34); a second connecting plate (36) is provided on the upper end of the sliding rod (33) away from the connecting rod (31); a threaded rod (37) is rotatably connected to the second connecting plate (36) and is threadedly connected to the first connecting plate (35).

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