Garden irrigation system capable of collecting and utilizing rainwater

Abstract

According to the garden irrigation system for rainwater collection and utilization, rainwater is efficiently collected through the funnel-shaped rainwater collection unit and the water collection unit, the rainwater enters the treatment link after being preliminarily filtered, the treated rainwater is stored in the water unit for irrigation, the water resource utilization rate is increased, and the urban drainage pressure is relieved. The irrigation control module is combined with sensing unit data to accurately irrigate, and the excessive or insufficient problem is avoided. Rotation of the irrigation execution module and an atomization nozzle meet irrigation requirements of different plants. The rainwater treatment module performs multi-stage filtration and purification, and the water quality monitoring unit ensures that the water quality reaches the standard. The rainwater storage module water level monitoring guarantees the safety of the water unit. The irrigation unit and the pressure sensing unit maintain stable pressure. In addition, the system is provided with a manual control mode, so that the operation flexibility is improved, and the maintenance cost and difficulty are reduced by a backwashing unit, a water unit and a stirring unit of each filter unit.

Description

Technical Field

[0001] The invention relates to the technical field of garden irrigation, and in particular to a garden irrigation system for collecting and utilizing rainwater. Background Art

[0002] With the acceleration of urbanization and people's increasing attention to the ecological environment, garden landscapes have become increasingly important in urban construction. Garden irrigation is a key link in maintaining the growth of garden plants, but traditional garden irrigation mostly relies on urban water supply systems, which not only increases the burden of urban water supply, but also causes a waste of water resources.

[0003] As a natural water resource, rainwater has the characteristics of large water volume and wide distribution. If rainwater can be collected and used for garden irrigation, it will greatly save water resources and reduce the cost of garden irrigation. However, there are some shortcomings in the existing rainwater collection and utilization system. For example, the lack of effective filtering and purification measures in the rainwater collection process leads to a large amount of impurities and pollutants in the collected rainwater, which is easy to clog the irrigation equipment and affect the irrigation effect; at the same time, the existing rainwater collection system cannot reasonably adjust the storage of rainwater according to the actual water demand of the garden, which is easy to cause waste or shortage of rainwater. Therefore, we propose a garden irrigation system for rainwater collection and utilization. Summary of the invention

[0004] The purpose of the present invention is to address the problems raised by the existing background technology. In order to achieve the above invention purpose, the present invention provides the following technical solutions: a garden irrigation system for rainwater collection and utilization, including a rainwater collection module, a rainwater treatment module, a rainwater storage module, an irrigation control module and an irrigation execution module;

[0005] The rainwater collection module is used to collect rainwater in the garden area, including multiple rainwater collection units arranged at different positions in the garden and a water collection unit connected to the rainwater collection units. The rainwater collection unit is funnel-shaped, and a filter unit is arranged on its inner wall to preliminarily filter larger impurities in the rainwater;

[0006] The rainwater treatment module filters and purifies the collected rainwater, and includes a primary filter unit, a secondary filter unit and a high-level filter unit connected in sequence, wherein the primary filter unit is a grid filter unit, the secondary filter unit is an activated carbon filter unit, and the high-level filter unit is a reverse osmosis membrane filter unit, and the rainwater treatment module is also provided with a water quality monitoring unit;

[0007] The rainwater storage module is used to store treated rainwater, and includes a water storage unit and a water level monitoring unit. The water level monitoring unit is arranged in the water storage unit and is used to monitor the water level in the water storage unit in real time.

[0008] The irrigation control module automatically controls the irrigation process according to the water demand of garden plants and weather conditions, and includes a central control unit, a soil moisture sensing unit and a meteorological sensing unit. The soil moisture sensing unit is arranged in different areas of the garden, and the meteorological sensing unit is used to monitor the meteorological parameters of temperature, humidity, light intensity and rainfall. The central control unit receives data transmitted by the soil moisture sensing unit and the meteorological sensing unit and issues irrigation instructions according to a preset irrigation strategy;

[0009] The irrigation execution module irrigates the garden plants according to the instructions of the irrigation control module, and includes a water pump, an irrigation unit channel and a sprinkler. The water pump draws rainwater in the water storage unit to the irrigation unit channel, and the sprinkler is arranged on the irrigation unit channel.

[0010] As a preferred technical solution of the present invention, the bottom of the rainwater collection unit is provided with a slope, and the slope is toward the water collection unit.

[0011] As a preferred technical solution of the present invention, the primary filtration unit, the intermediate filtration unit and the advanced filtration unit are all provided with a backwashing unit.

[0012] As a preferred technical solution of the present invention, a stirring unit is provided in the water storage unit.

[0013] As a preferred technical solution of the present invention, the irrigation control module is also provided with a manual control mode for allowing the unit manager to manually operate the irrigation system when the automatic control mode fails or special irrigation is required.

[0014] As a preferred technical solution of the present invention, the water quality monitoring unit is connected to a reflux unit. When the water quality of the treated rainwater does not meet the requirements, the rainwater is re-transported to the primary filtration unit through the reflux unit for further treatment.

[0015] As a preferred technical solution of the present invention, the nozzle includes a rotating nozzle and an atomizing nozzle.

[0016] As a preferred technical solution of the present invention, the water storage unit is made of corrosion-resistant and high-strength materials, including stainless steel or fiberglass.

[0017] As a preferred technical solution of the present invention, the water level monitoring unit is connected to an alarm unit and a drain valve. When the water level is lower than a set lower limit, the alarm unit automatically sounds an alarm; when the water level is higher than a set upper limit, the drain valve automatically opens.

[0018] As a preferred technical solution of the present invention, a flow regulating valve is arranged between the water collection unit and the rainwater treatment module, and the flow regulating valve is connected to the central control unit. The central control unit automatically adjusts the opening of the flow regulating valve according to the processing capacity of the rainwater treatment module and the amount of rainwater collected to ensure that the amount of rainwater entering the rainwater treatment module is within its reasonable processing range; a pressure sensing unit is arranged on the irrigation unit channel, and the pressure sensing unit is connected to the central control unit. When the pressure sensing unit detects that the pressure in the irrigation unit channel is abnormal, the central control unit controls the water pump to adjust the working state to maintain the pressure in the irrigation unit channel stable and ensure normal irrigation of the sprinkler.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] The system can efficiently collect rainwater in the garden area through multiple funnel-shaped rainwater collection units and connected water collection units set up in different locations of the garden. The funnel-shaped design and bottom slope setting ensure that rainwater is quickly collected in the water collection unit, and the inner wall filter unit initially filters larger impurities so that rainwater can smoothly enter the subsequent treatment link. After treatment, it is stored in the water storage unit and used for garden irrigation, realizing the effective reuse of rainwater, greatly improving the utilization rate of water resources, and reducing dependence on traditional municipal water supply.

[0021] During rainy days, the system collects a large amount of rainwater in the garden, reducing the amount of rainwater that is directly discharged into the urban drainage system, thereby alleviating the pressure on the urban drainage system to a certain extent and reducing the risk of urban waterlogging.

[0022] The irrigation control module is equipped with soil moisture sensor units and meteorological sensor units. The central control unit receives data from these sensor units and automatically controls the irrigation process according to the preset irrigation strategy. It can accurately irrigate according to the actual water demand of garden plants and weather conditions, avoiding the problem of over-irrigation or under-irrigation, improving the scientificity and rationality of irrigation, and is conducive to the healthy growth of garden plants.

[0023] The sprinklers in the irrigation execution module include rotary sprinklers and atomizing sprinklers, which can be arranged reasonably according to the water requirements of different plants and the topography of the irrigation area. Rotary sprinklers are suitable for large-area irrigation and can cover a large range; atomizing sprinklers are suitable for plants with high humidity requirements or small-scale fine irrigation, meeting the irrigation needs of different plants in the garden and improving the irrigation effect.

[0024] The rainwater treatment module uses a primary filter unit, a secondary filter unit and a high-level filter unit connected in sequence to perform multi-stage filtration and purification on the collected rainwater. The grid-type primary filter unit can remove larger impurities, the activated carbon intermediate filter unit absorbs organic matter and odor, and the reverse osmosis membrane high-level filter unit can remove bacteria, viruses and dissolved salts, effectively improving the water quality of rainwater.

[0025] The water quality monitoring unit monitors the water quality of the treated rainwater in real time. When the water quality does not meet the requirements, the rainwater is re-transported to the primary filtration unit through the reflux unit for further treatment, ensuring that the water quality of rainwater used for irrigation always meets the growth requirements of garden plants and avoids damage to plants due to water quality problems.

[0026] The water level monitoring unit in the rainwater storage module monitors the water level in the water storage unit in real time and is connected to the alarm unit and the drain valve. When the water level is lower than the lower limit, the alarm unit will sound an alarm to remind the unit manager; when the water level is higher than the upper limit, the drain valve will automatically open to prevent the water unit from overflowing, ensuring the safe and stable operation of the water storage unit.

[0027] The pressure sensing unit installed on the irrigation unit channel is connected to the central control unit. When abnormal pressure is detected in the irrigation unit channel, the central control unit controls the water pump to adjust the working state to maintain the pressure in the irrigation unit channel stable, ensure normal irrigation of the sprinkler, and avoid damage to the sprinkler or uneven irrigation due to pressure problems.

[0028] The irrigation control module is equipped with a manual control mode. When the automatic control mode fails or special irrigation is required, the unit manager can control the irrigation system in time through manual operation, ensuring the normal progress of irrigation work and increasing the operational flexibility of the system.

[0029] The primary filter unit, intermediate filter unit and advanced filter unit are all equipped with backwash units, which can backwash the filter units regularly to prevent the filter units from being blocked, extend the service life of the filter units and reduce maintenance costs. The stirring unit in the water storage unit can prevent the precipitation of impurities in the water, ensure the uniform water quality in the water unit, and reduce the frequency and difficulty of cleaning the water unit. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 A schematic diagram of experimental data provided by the present invention;

[0031] Figure 2 This is a schematic diagram of experimental data provided by the present invention. DETAILED DESCRIPTION

[0032] To make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be described clearly and completely in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them.

[0033] Therefore, the following detailed description of the embodiments of the present invention is not intended to limit the scope of the claimed invention, but merely represents some embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention. It should be noted that the embodiments of the present invention and the features and technical solutions in the embodiments can be combined with each other without conflict. It should be noted that similar numbers and letters represent similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0034] Embodiment 1: A garden irrigation system for rainwater collection and utilization, comprising a rainwater collection module, a rainwater treatment module, a rainwater storage module, an irrigation control module and an irrigation execution module;

[0035] The rainwater collection module is used to collect rainwater in the garden area, including multiple rainwater collection units arranged at different locations in the garden and water collection units connected to the rainwater collection units. The rainwater collection unit is funnel-shaped, and a filter unit is arranged on its inner wall to preliminarily filter larger impurities in the rainwater.

[0036] The rainwater treatment module filters and purifies the collected rainwater, and includes a primary filter unit, a secondary filter unit and a high-level filter unit connected in sequence. The primary filter unit is a grid filter unit, the secondary filter unit is an activated carbon filter unit, and the high-level filter unit is a reverse osmosis membrane filter unit. The rainwater treatment module is also provided with a water quality monitoring unit.

[0037] The rainwater storage module is used to store the treated rainwater, and includes a water storage unit and a water level monitoring unit. The water level monitoring unit is arranged in the water storage unit and is used to monitor the water level in the water storage unit in real time.

[0038] The irrigation control module automatically controls the irrigation process according to the water demand of garden plants and weather conditions, including a central control unit, a soil moisture sensor unit and a meteorological sensor unit. The soil moisture sensor unit is set in different areas of the garden. The meteorological sensor unit is used to monitor the meteorological parameters of temperature, humidity, light intensity and rainfall. The central control unit receives data from the soil moisture sensor unit and the meteorological sensor unit and issues irrigation instructions according to the preset irrigation strategy;

[0039] The irrigation execution module irrigates the garden plants according to the instructions of the irrigation control module, and includes a water pump, an irrigation unit channel and a sprinkler. The water pump draws rainwater in the water storage unit to the irrigation unit channel, and the sprinkler is arranged on the irrigation unit channel.

[0040] The bottom of the rainwater collection unit is provided with a slope, and the slope is toward the water collection unit.

[0041] The primary filter unit, the intermediate filter unit and the advanced filter unit are all provided with a backwash unit.

[0042] A stirring unit is arranged in the water storage unit.

[0043] The irrigation control module is also provided with a manual control mode for the unit manager to manually operate the irrigation system when the automatic control mode fails or special irrigation is required.

[0044] The water quality monitoring unit is connected to a reflux unit. When the water quality of the treated rainwater does not meet the requirements, the rainwater is re-transported to the primary filtration unit through the reflux unit for further treatment.

[0045] The nozzles include rotary nozzles and atomizing nozzles.

[0046] The water storage units are made of corrosion-resistant, high-strength materials, including stainless steel or fiberglass.

[0047] The water level monitoring unit is connected to an alarm unit and a drain valve. When the water level is lower than a set lower limit, the alarm unit automatically sounds an alarm; when the water level is higher than a set upper limit, the drain valve automatically opens.

[0048] A flow regulating valve is arranged between the water collection unit and the rainwater treatment module, and the flow regulating valve is connected to the central control unit. The central control unit automatically adjusts the opening of the flow regulating valve according to the processing capacity of the rainwater treatment module and the amount of rainwater collected to ensure that the amount of rainwater entering the rainwater treatment module is within its reasonable processing range; a pressure sensing unit is arranged on the irrigation unit channel, and the pressure sensing unit is connected to the central control unit. When the pressure sensing unit detects that the pressure in the irrigation unit channel is abnormal, the central control unit controls the water pump to adjust the working state to maintain the pressure in the irrigation unit channel stable and ensure normal irrigation of the sprinkler.

[0049] Embodiment 2: A garden irrigation system for rainwater collection and utilization, arrangement of rainwater collection units: According to the topography and plant distribution of the garden, a total of 20 rainwater collection units are installed at different locations in the garden. The rainwater collection unit adopts a funnel-shaped design, and a filter unit is installed on the inner wall. The pore size of the filter unit is 5mm, which can initially filter larger impurities such as leaves and branches in the rainwater. A 3% slope is set at the bottom of the rainwater collection unit, and the slope is towards the water collection unit to ensure that rainwater can flow smoothly into the water collection unit.

[0050] Water collection unit connection: Use PVC water collection units with a diameter of 200mm to connect the various rainwater collection units. A flow control valve is installed between the water collection unit and the rainwater treatment module. The flow control valve is connected to the central control unit installed later so that the opening can be automatically adjusted according to the processing capacity of the rainwater treatment module and the amount of rainwater collected.

[0051] Installation of filter units: Install the primary filter unit, intermediate filter unit and advanced filter unit in sequence. The primary filter unit uses a grid filter unit with a grid spacing of 2mm, which can further filter fine impurities in rainwater; the intermediate filter unit uses an activated carbon filter unit with a filling amount of 500kg, which can effectively absorb organic matter and odor in rainwater; the advanced filter unit uses a reverse osmosis membrane filter unit with a filtration accuracy of up to 0.0001μm, which can remove bacteria, viruses and dissolved salts in rainwater.

[0052] Backwash unit setting: A backwash unit is installed for each filter unit, and the filter unit is backwashed regularly to ensure the filtering effect and extend the service life of the filter unit.

[0053] Installation of water quality monitoring unit and return unit: A water quality monitoring unit is installed in the rainwater treatment module to monitor the water quality of the treated rainwater in real time. The water quality monitoring unit is connected to the return unit. When the water quality of the treated rainwater does not meet the requirements, the rainwater is re-transported to the primary filtration unit through the return unit for further treatment.

[0054] Water storage unit installation: A stainless steel water storage unit with a capacity of 500 cubic meters is used, which is corrosion-resistant and high-strength. A stirring unit is installed in the water storage unit to regularly stir the rainwater in the water unit to prevent the precipitation of impurities in the water.

[0055] Installation of water level monitoring unit, alarm unit and drain valve: Install the water level monitoring unit in the water storage unit, and connect the alarm unit and drain valve. When the water level is lower than the set lower limit (such as 1 meter), the alarm unit automatically sounds an alarm to remind the unit management personnel to take timely measures; when the water level is higher than the set upper limit (such as 4 meters), the drain valve automatically opens to drain excess rainwater.

[0056] Sensor unit layout: A total of 30 soil moisture sensor units were installed in different areas of the garden to monitor the soil moisture in real time. At the same time, meteorological sensor units were installed to monitor meteorological parameters such as temperature, humidity, light intensity and rainfall.

[0057] Central control unit installation: Install the central control unit, which receives data from the soil moisture sensor unit and the meteorological sensor unit and issues irrigation instructions according to the preset irrigation strategy. In addition, the irrigation control module also has a manual control mode and is equipped with an operation panel. When the automatic control mode fails or special irrigation is required, the unit manager can manually operate the irrigation system through the operation panel.

[0058] Installation of water pump, irrigation unit channel and sprinkler: Install a water pump with a flow rate of 50 cubic meters per hour and a head of 30 meters, which can pump rainwater from the water storage unit to the irrigation unit channel. The irrigation unit channel uses PE units, and the unit diameter is reasonably selected according to the size of the irrigation area and the number of sprinklers. Install a pressure sensing unit on the irrigation unit channel, which is connected to the central control unit. When the pressure sensing unit detects abnormal pressure in the irrigation unit channel, the central control unit controls the water pump to adjust the working state to maintain the pressure in the irrigation unit channel stable. The sprinklers include rotary sprinklers and atomizing sprinklers, which are reasonably arranged according to the water requirements of different plants and the terrain of the irrigation area.

[0059] System operation process: When it rains, rainwater in the garden area flows into each rainwater collection unit, and after preliminary filtration by the filter unit, it flows to the rainwater treatment module through the water collection unit. The flow regulating valve on the water collection unit automatically adjusts the opening according to the instructions of the central control unit to ensure that the amount of rainwater entering the rainwater treatment module is within its reasonable treatment range.

[0060] Rainwater first enters the primary filtration unit, where it is filtered through a grid to remove larger impurities; then it enters the secondary filtration unit, where it is adsorbed with activated carbon to remove organic matter and odor; and finally it enters the advanced filtration unit, where it is filtered through a reverse osmosis membrane to remove bacteria, viruses, dissolved salts, etc. During the treatment process, the water quality monitoring unit monitors the quality of rainwater in real time. If the water quality does not meet the requirements, the rainwater is re-transported to the primary filtration unit through the reflux unit for further treatment.

[0061] The treated rainwater flows into the water storage unit for storage. The water level monitoring unit monitors the water level in the water storage unit in real time. When the water level is lower than the set lower limit, the alarm unit sounds an alarm; when the water level is higher than the set upper limit, the drain valve automatically opens. At the same time, the mixing unit regularly stirs the rainwater in the water unit to prevent impurities from settling.

[0062] The central control unit issues irrigation instructions according to the preset irrigation strategy based on the data transmitted by the soil moisture sensor unit and the meteorological sensor unit. When the soil moisture is lower than the set value and the meteorological conditions are suitable for irrigation, the water pump starts to pump rainwater in the water storage unit to the irrigation unit channel, and irrigates the garden plants through the sprinkler. During the irrigation process, the pressure sensor unit monitors the pressure in the irrigation unit channel in real time. If the pressure is abnormal, the central control unit controls the water pump to adjust the working state to ensure normal irrigation of the sprinkler. If the automatic control mode fails or special irrigation is required, the unit manager can operate the irrigation system through the manual control mode.

[0063] Clean the filter unit of the rainwater collection unit regularly to prevent the filter unit from being blocked and affecting the rainwater collection effect.

[0064] According to the instructions for use of the backwash unit, backwash the primary filter unit, intermediate filter unit and advanced filter unit regularly to ensure the normal operation of the filter unit.

[0065] Regularly check the working status of equipment such as water quality monitoring units, water level monitoring units, soil moisture sensing units, meteorological sensing units and pressure sensing units to ensure the accuracy of the data.

[0066] Clean and disinfect water storage units regularly to prevent the growth of bacteria and algae in the water units.

[0067] Regularly check the operation of water pumps, sprinklers and irrigation units, and replace damaged parts in time.

[0068] Experimental example:

[0069] Purpose

[0070] Verify the collection efficiency of the rainwater collection module and the removal capacity of the rainwater treatment module for different pollutants.

[0071] Experimental materials and equipment

[0072] 1. A small-scale rainwater collection and utilization garden irrigation system model designed and manufactured according to the present invention comprises components such as a rainwater collection unit, a water collection unit, a primary filtration unit, a secondary filtration unit, a high-level filtration unit, and a water quality monitoring unit.

[0073] 2. Rainfall simulation unit, which can adjust the rainfall amount and rainfall intensity.

[0074] 3. Pollutant samples, including mud, leaves, organic matter, heavy metal ions, etc.

[0075] 4. Water quality testing equipment, used to detect the content of various pollutants in rainwater.

[0076] Experimental procedures

[0077] 1. Simulate rainfall and collect

[0078] A simulated rainfall unit was used to simulate rainfall of different intensities (light rain, moderate rain, and heavy rain), each lasting for 30 minutes.

[0079] The amount of rainwater collected by the rainwater collection unit during each simulated rainfall process is recorded, and the collection efficiency of the rainwater collection module is calculated (collection efficiency = actual collected rainwater amount / simulated rainfall amount × 100%).

[0080] 2. Rainwater treatment

[0081] A certain amount of pollutant samples is added to the simulated rainwater to make it simulate actual polluted rainwater.

[0082] After the polluted rainwater is collected by the rainwater collection module, it is processed in sequence through the primary filtration unit, the intermediate filtration unit and the advanced filtration unit.

[0083] Water samples were collected before and after treatment, and the content of pollutants such as sediment, organic matter, and heavy metal ions in the rainwater was tested using water quality testing equipment. The removal rate of each filtration unit for different pollutants was calculated (removal rate = (pollutant content before treatment × pollutant content after treatment) / pollutant content before treatment × 100%).

[0084] Experimental Results

[0085] 1. Rainwater collection efficiency

[0086] Under light rain intensity, the rainwater collection efficiency reaches over 90%.

[0087] Under moderate rain intensity, the rainwater collection efficiency stabilizes at around 95%.

[0088] Even under heavy rain, the rainwater collection efficiency can still be maintained above 92%.

[0089] 2. Pollutant removal rate

[0090] The primary filtration unit can remove more than 95% of larger particles of impurities such as mud and sand.

[0091] The removal rate of organic matter by the intermediate filtration unit reaches over 80%, and the removal rate of some heavy metal ions reaches over 60%.

[0092] The advanced filtration unit has a removal rate of nearly 100% for tiny particles, bacteria and viruses, and a removal rate of over 90% for remaining heavy metal ions.

[0093] Experimental Example 2: Field Garden Application Experiment

[0094] Purpose

[0095] Verify the overall operating effect of the garden irrigation system that collects and utilizes rainwater in the actual garden environment, including the amount of rainwater collected, the effect of water quality treatment, the irrigation effect, and the conservation of water resources.

[0096] Experimental location and subjects

[0097] An urban park garden area of ​​approximately 2,000 square meters was selected as the experimental site, where a variety of flowers, shrubs and trees were planted.

[0098] Experimental procedures

[0099] 1. System installation and debugging

[0100] A garden irrigation system for collecting and utilizing rainwater is installed in a garden area according to the design requirements of the present invention, comprising a rainwater collection module, a rainwater treatment module, a rainwater storage module, an irrigation control module and an irrigation execution module.

[0101] Debug the system to ensure that all components operate normally and that the parameter settings of the irrigation control module are in line with the water requirements of garden plants.

[0102] 2. Data monitoring and recording

[0103] During the experimental period (3 consecutive months), the rainfall, rainwater collection, and water level changes in the water storage unit were recorded for each rainfall.

[0104] Collect treated rainwater samples regularly and test water quality indicators to ensure that the water quality meets irrigation water standards.

[0105] Use soil moisture sensing units to monitor soil moisture changes in different areas of the garden in real time and record irrigation times and amounts.

[0106] Observe the growth conditions of garden plants, including their survival rate, growth rate, leaf color, etc.

[0107] 3. Comparative Analysis

[0108] A garden area adjacent to the experimental garden area, with a similar area and planted with the same plants was selected as the control group, and the control group adopted the traditional urban water supply irrigation method.

[0109] The irrigation water consumption, plant growth conditions and irrigation costs of the experimental group and the control group during the experimental period were compared.

[0110] Experimental Example 1: Laboratory Simulation of Rainwater Collection and Treatment Experiment

[0111]

[0112] Data processing and analysis

[0113] 1. Rainwater collection efficiency analysis

[0114] From the data, we can see that as the rainfall intensity increases from light rain to moderate rain, the collection efficiency increases from 92% to 96%. This may be because the rainwater has better fluidity during moderate rain and is more conducive to flowing into the collection unit. From moderate rain to heavy rain, the collection efficiency drops slightly to 93.3%, which may be because some rainwater splashes out of the collection unit during heavy rain or is lost before it can be collected. Overall, the rainwater collection module shows a high collection efficiency under different rainfall intensities, indicating that its design is relatively reasonable and can effectively collect rainwater.

[0115] 2. Pollutant removal rate analysis

[0116] Sediment removal: The sediment removal rate of the primary filtration unit is above 95%, indicating that the primary filtration unit can effectively intercept larger particles of sediment impurities, reducing the burden for subsequent processing.

[0117] Organic matter removal: The removal rate of organic matter by the intermediate filter unit reached more than 80%, indicating that the intermediate filter unit has a good effect in removing organic matter. The organic matter removal rate fluctuated slightly under different rainfall intensities, but was maintained at a high level.

[0118] Removal of heavy metal ions: The removal rate of some heavy metal ions by the intermediate filtration unit reaches more than 60%, and the removal rate of the remaining heavy metal ions by the advanced filtration unit reaches more than 90%, indicating that the content of heavy metal ions in rainwater can be effectively reduced through multi-stage filtration.

[0119] in conclusion

[0120] The rainwater collection module can maintain a high collection efficiency under different rainfall intensities and can effectively collect rainwater. At the same time, after multi-stage treatment by primary, secondary and advanced filtration units, it has a good removal effect on pollutants such as sediment, organic matter and heavy metal ions, proving the effectiveness of the rainwater treatment module.

[0121] Experimental Example 2: Field Garden Application Experiment

[0122] project Experimental Group Control group Total rainfall during the experiment (mm) 500 500 <![CDATA[Rainwater collection volume (m 3 )]]> 15 15 <![CDATA[Irrigation water consumption during the experiment (m 3 )]]> 10 25 Plant survival rate (%) 95 93 Average plant height increase (cm) 15 14 Leaf color score (1-5, 5 being the greenest) 4 3 Irrigation cost (yuan) 500 1200

[0123] Data processing and analysis

[0124] 1. Rainwater collection and storage analysis

[0125] During the experiment, 15m 3 Rainwater shows that the rainwater collection and utilization system can effectively collect rainwater in the actual garden environment, and the water storage unit can normally store the treated rainwater, and the water level changes are in line with expectations, indicating that the rainwater collection and storage modules of the system operate stably.

[0126] 2. Analysis of water treatment effect

[0127] All indicators of the treated rainwater quality meet the standards for garden irrigation water, which ensures the quality of irrigation water and can provide a good growth environment for garden plants.

[0128] 3. Irrigation effect analysis

[0129] The survival rate of the experimental group was 95%, and that of the control group was 93%, which was slightly higher than that of the control group. The average plant height increase was 15 cm in the experimental group and 14 cm in the control group, which was also slightly higher than that of the control group. The leaf color score of the experimental group was 4 points, and that of the control group was 3 points, indicating that the leaves of the plants in the experimental group were greener, indicating that the irrigation effect of the system was better.

[0130] 4. Analysis of water conservation

[0131] The irrigation water consumption of the experimental group during the experimental period was 10m 3 , the control group was 25m 3 The experimental group saved more than 60% of water compared with the control group. At the same time, the irrigation cost of the experimental group was 500 yuan, while that of the control group was 1,200 yuan, which significantly reduced the irrigation cost.

[0132] in conclusion

[0133] The rainwater collection and utilization garden irrigation system works well in the actual garden environment. It can effectively collect and store rainwater, and the quality of the treated rainwater meets the irrigation standards. In terms of irrigation effect, it can ensure the growth of plants and is even better than traditional irrigation methods. At the same time, the system significantly saves water resources and irrigation costs, reduces the dependence of garden irrigation on urban water supply, and has good application prospects.

[0134] The above embodiments are only used to illustrate the present invention but not to limit the technical solutions described in the present invention. Although the present invention has been described in detail with reference to the above embodiments, the present invention is not limited to the above specific implementation methods. Therefore, any modification or replacement of the present invention; and all technical solutions and improvements thereof that do not depart from the spirit and scope of the invention are included in the scope of the claims of the present invention.

Claims

1. A garden irrigation system for rainwater collection and utilization, characterized in that: It includes a rainwater collection module, a rainwater treatment module, a rainwater storage module, an irrigation control module and an irrigation execution module; The rainwater collection module is used to collect rainwater in the garden area, including multiple rainwater collection units arranged at different positions in the garden and a water collection unit connected to the rainwater collection units. The rainwater collection unit is funnel-shaped, and a filter unit is arranged on its inner wall to preliminarily filter larger impurities in the rainwater; The rainwater treatment module filters and purifies the collected rainwater, and includes a primary filter unit, a secondary filter unit and a high-level filter unit connected in sequence, wherein the primary filter unit is a grid filter unit, the secondary filter unit is an activated carbon filter unit, and the high-level filter unit is a reverse osmosis membrane filter unit, and the rainwater treatment module is also provided with a water quality monitoring unit; The rainwater storage module is used to store treated rainwater, and includes a water storage unit and a water level monitoring unit. The water level monitoring unit is arranged in the water storage unit and is used to monitor the water level in the water storage unit in real time. The irrigation control module automatically controls the irrigation process according to the water demand of garden plants and weather conditions, and includes a central control unit, a soil moisture sensing unit and a meteorological sensing unit. The soil moisture sensing unit is arranged in different areas of the garden, and the meteorological sensing unit is used to monitor the meteorological parameters of temperature, humidity, light intensity and rainfall. The central control unit receives data transmitted by the soil moisture sensing unit and the meteorological sensing unit and issues irrigation instructions according to a preset irrigation strategy; The irrigation execution module irrigates the garden plants according to the instructions of the irrigation control module, and includes a water pump, an irrigation unit channel and a sprinkler. The water pump draws rainwater in the water storage unit to the irrigation unit channel, and the sprinkler is arranged on the irrigation unit channel.

2. A garden irrigation system for rainwater collection and utilization according to claim 1, characterized in that: The bottom of the rainwater collection unit is provided with a slope, and the slope is toward the water collection unit.

3. A garden irrigation system for rainwater collection and utilization according to claim 2, characterized in that: The primary filter unit, the intermediate filter unit and the advanced filter unit are all provided with a backwash unit.

4. A garden irrigation system for rainwater collection and utilization according to claim 3, characterized in that: A stirring unit is arranged in the water storage unit.

5. A garden irrigation system for rainwater collection and utilization according to claim 4, characterized in that: The irrigation control module is also provided with a manual control mode for allowing the unit manager to manually operate the irrigation system when the automatic control mode fails or special irrigation is required.

6. A garden irrigation system for rainwater collection and utilization according to claim 5, characterized in that: The water quality monitoring unit is connected to a reflux unit. When the water quality of the treated rainwater does not meet the requirements, the rainwater is re-transported to the primary filtering unit through the reflux unit for further treatment.

7. A garden irrigation system for rainwater collection and utilization according to claim 6, characterized in that: The nozzles include rotating nozzles and atomizing nozzles.

8. A garden irrigation system for rainwater collection and utilization according to claim 7, characterized in that: The water storage unit is made of corrosion-resistant, high-strength materials, including stainless steel or glass fiber reinforced plastics.

9. A garden irrigation system for rainwater collection and utilization according to claim 8, characterized in that: The water level monitoring unit is connected to an alarm unit and a drain valve. When the water level is lower than a set lower limit, the alarm unit automatically sounds an alarm; when the water level is higher than a set upper limit, the drain valve automatically opens.

10. A garden irrigation system for rainwater collection and utilization according to claim 9, characterized in that: A flow regulating valve is arranged between the water collection unit and the rainwater treatment module, and the flow regulating valve is connected to the central control unit. The central control unit automatically adjusts the opening of the flow regulating valve according to the processing capacity of the rainwater treatment module and the amount of rainwater collected to ensure that the amount of rainwater entering the rainwater treatment module is within its reasonable processing range; a pressure sensing unit is arranged on the irrigation unit channel, and the pressure sensing unit is connected to the central control unit.

Images