Landscaping irrigation device

Abstract

The invention discloses a landscaping irrigation device, and relates to the technical field of irrigation. The system comprises a first irrigation unit and a second irrigation unit which are independently controlled; the second irrigation modules are located in an area defined by the four adjacent first irrigation modules distributed in a rectangular shape. The first irrigation module forms a first irrigation area with the irrigation radius being r1; and the second irrigation module forms a second irrigation area with the irrigation radius of r4. The first irrigation units and the second irrigation units which are independently controlled are arranged, and each second irrigation module is located in a rectangular area defined by the corresponding four adjacent first irrigation modules; traditional irrigation blind areas and overlapping areas are thoroughly eliminated through the unique grid design; uniform irrigation coverage is ensured, resource waste is avoided, and the method is suitable for large-soil-volume landscaping.

Description

Technical Field

[0001] The invention belongs to the technical field of irrigation, and in particular relates to a gardening irrigation device. Background Art

[0002] The development and changes of gardens generally change with the level of national economic development. The higher the economic level, the higher people's requirements for gardens, and the more room there is for garden development. In recent years, landscaping has developed rapidly. In the later operation and maintenance of gardens, it is necessary to regularly use manual or mechanical irrigation in different forms to replenish the soil moisture of gardens and green spaces to meet the water needs of plants.

[0003] At present, most of the common landscaping irrigation methods are to pull the pipe to install the sprinkler pipe on the ground, and then connect the pipe to the fire hydrant or water tank to irrigate the green area. The sprinklers are distributed in a grid shape. Since the irrigation range of the irrigation sprinkler 1 is a circular area 10, the four rectangularly distributed irrigation sprinklers 1 are prone to attachment during irrigation. Figure 2 The non-irrigated area 11 shown, or as shown in the attached Figure 3 The repeated irrigation area 12 shown; when a waterless irrigation area 11 appears, it is easy to cause insufficient irrigation of part of the waterless irrigation area 11. If a repeated irrigation area 12 appears, the repeated irrigation area 12 causes excessive irrigation, which easily causes waste of water resources. Summary of the Invention

[0004] The purpose of the present invention is to provide a garden irrigation device, which solves the problems of blind spots and overlapping areas in traditional grid irrigation and avoids waste of resources by setting a first irrigation unit and a second irrigation unit that are independently controlled from each other, and the second irrigation module is located in a rectangular area surrounded by four adjacent first irrigation modules.

[0005] To solve the above technical problems, the present invention is achieved through the following technical solutions:

[0006] The present invention is a garden greening irrigation device, comprising a first irrigation unit and a second irrigation unit that are independently controlled from each other; the first irrigation unit comprises N rows and M columns of first irrigation modules; the second irrigation unit comprises K rows and L columns of second irrigation modules; the second irrigation module is located in an area surrounded by four adjacent first irrigation modules distributed in a rectangular manner; and the straight-line distance between the second irrigation module and the four first irrigation modules is equal; the first irrigation module forms an irrigation first irrigation area with a radius r1, then the row spacing and column spacing of the first irrigation modules in the first irrigation unit are both r2, and the row spacing and column spacing of the second irrigation modules in the second irrigation unit are both r3; then r3 and r2 are the same and both are less than or equal to twice r1; the second irrigation module forms an irrigation second irrigation area with a radius r4, by arranging the first irrigation unit and the second irrigation unit that are independently controlled from each other, wherein the second irrigation module is located in the rectangular area surrounded by the four adjacent first irrigation modules, uniform irrigation coverage is ensured, resource waste is avoided, and the device is suitable for garden greening with a large soil volume.

[0007] As a preferred technical solution of the present invention, r3 and r2 are the same and both equal to twice r1. By fixing the spacing ratio, irrigation blind areas or overlapping areas caused by uneven spacing are eliminated, thereby optimizing coverage efficiency.

[0008] As a preferred technical solution of the present invention, the first irrigation module is connected to a first irrigation pipeline provided with a flowmeter A and a valve A, and the second irrigation module is connected to a second irrigation pipeline provided with a flowmeter B and a valve B; and further includes a controller, which connects the flowmeter A, valve A, flowmeter B and valve B, and achieves precise water volume regulation of the first irrigation pipeline and the second irrigation pipeline through independent control of the flowmeter A, flowmeter B, valve A and valve B, thereby preventing repeated irrigation due to uneven flow.

[0009] As a preferred technical solution of the present invention, a third irrigation unit is further provided. The third irrigation module is fixed above the second irrigation module, and the third irrigation module forms four fan-shaped third irrigation areas; the third irrigation area is located between two first irrigation areas and one second irrigation area; by adding a third irrigation module and fixing it above the second irrigation module, a fan-shaped third irrigation area is formed to fill the boundary blind area between the first irrigation area and the second irrigation area.

[0010] As a preferred technical solution of the present invention, the third irrigation module includes four spray assemblies installed above the second irrigation module, and the spray assemblies are fan-shaped; the spray assemblies are connected to the second irrigation pipeline.

[0011] As a preferred technical solution of the present invention, the second irrigation pipeline is connected to a water flow distributor, which includes a shell, and is provided with a water inlet and two water outlets; the water inlet is connected to the second irrigation pipeline, and the two water outlets are respectively connected to the second irrigation module and the third irrigation module; the water flow distributor intelligently distributes water to the second irrigation module and the third irrigation module through a water inlet and two water outlets, thereby solving the problem of uneven flow distribution.

[0012] As a preferred technical solution of the present invention, the bottom end of one water outlet is higher than the top end of the other water outlet; a piston is provided along the inner wall of the shell, and a plurality of through holes are provided on the piston; the top and bottom of the piston respectively cover the two water outlet parts; a piston column connected to the piston is provided through the guide on the top of the shell, and a pair of side plates are provided on the outer top side of the shell, and an elliptical driving block is provided between the two side plates, and a shaft rod rotatably mounted on the top of the two side plates is fixed on the driving block, and one end of the shaft rod is connected to the dial; the piston and the through hole design realize dynamic water flow adjustment, and the flow ratio of the two water outlets can be accurately controlled in combination with the driving block and the dial.

[0013] As a preferred technical solution of the present invention, it also includes a soil moisture sensor network, which includes humidity probes and salinity probes distributed in the first irrigation area and the second irrigation area; the controller is connected to the weather station and uses the temperature conditions in the future t time through the weather station.

[0014] As a preferred technical solution of the present invention, a microporous filter is provided at the water inlet end of the first irrigation pipeline and the second irrigation pipeline, and the pore size of the microporous filter is ≤0.1mm; an ultrasonic oscillator is installed on the microporous filter, and the vibration frequency of the ultrasonic oscillator is 28-40kHz; when the flow meter A and / or flow meter B detects that the flow value per unit time is lower than the set threshold, the ultrasonic oscillator is automatically started and an alarm is issued; the microporous filter filters impurities, and the ultrasonic oscillator is automatically cleaned when the flow is abnormal, thereby preventing uneven irrigation caused by pipeline blockage.

[0015] Furthermore, it also includes a rainwater collection system, which includes several rainwater collection mechanisms, each of which includes a vertical pipe that is vertically arranged and the bottom end of which is connected to an inlet and outlet pipe. A bracket is provided at the bottom of the vertical pipe, and the bracket is connected to a piston that slides along the inner wall of the vertical pipe through a limiting rope. The top of the piston is connected to a connecting seat, and a lightweight vertical rod is connected to the connecting seat. The connecting seats on both sides of the lightweight vertical rod are respectively provided with notches, and a swing rod is pivotally connected in the notch. The swing rod has a rectangular groove on the side close to the lightweight vertical rod, and a rain shield is connected between the swing rod and the lightweight vertical rod; the end of the lightweight vertical rod is provided with a top cover that fits on the end of the vertical pipe; the inlet The other end of the water outlet pipe is connected to the first water pipe and the second water pipe through a three-way valve. The second water pipe is connected to the top of the water tank, and the first water pipe is connected to the air pump. When the swing arm extends from the end of the vertical pipe, the swing arm flips to one side under the action of its own gravity and rests on the end face of the vertical pipe. At this time, the swing arm is horizontal. When the swing arm is horizontal, the height of the bottom side of the rectangular groove gradually increases in the direction away from the lightweight vertical rod. A number of through holes are provided on the bottom side of the notch, and a groove connected to the through hole is provided on the top of the piston. A through hole is also provided in the piston below the piston. The cross-section of the through hole gradually decreases from the center to both ends, and a float is provided in the through hole.

[0016] Furthermore, the top of the vertical tube is provided with zigzag-shaped protrusions, and arc surfaces are respectively provided on both sides of the top of the protrusions, and an open groove for clamping the swing rod is formed between the two arc surfaces.

[0017] The present invention has the following beneficial effects:

[0018] The present invention sets up a first irrigation unit, a second irrigation unit and a third irrigation unit that are independently controlled from each other. The second irrigation module is located in the rectangular area surrounded by four adjacent first irrigation modules; the third irrigation area is located between the two first irrigation areas and the second irrigation area; the unique three-level grid design completely eliminates the blind spots and overlapping areas of traditional irrigation; and the integration of soil and meteorological data realizes automated and precise irrigation decision-making and execution.

[0019] Of course, any product implementing the present invention does not necessarily need to achieve all of the advantages described above at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0021] Figure 1This is a layout diagram of the irrigation device of the present invention;

[0022] Figure 2 Background technology Figure 1 ;

[0023] Figure 3 Background technology Figure 2 ;

[0024] Figure 4 This is a schematic structural diagram of the water flow distributor of the present invention;

[0025] Figure 5 is a cross-sectional view of the water flow distributor of the present invention;

[0026] Figure 6 This is a schematic structural diagram of the rainwater collection mechanism of the present invention;

[0027] Figure 7 for Figure 6 A partial enlarged view of the middle part;

[0028] Figure 8 This is a schematic structural diagram of the vertical pipe portion of the present invention;

[0029] Figure 9 for Figure 8 A partial enlarged view of point C in the middle;

[0030] Figure 10 This is a schematic diagram showing the connection between the water inlet and outlet pipes, the air pump, and the water storage tank of the present invention;

[0031] In the accompanying drawings, the components represented by the reference numerals are as follows:

[0032] 1-First irrigation module, 2-Second irrigation module, 3-Third irrigation module, 4-Water flow distributor, 5-Vertical pipe, 6-Inlet and outlet pipes, 10-First irrigation area, 20-Second irrigation area, 30-Third irrigation area, 40-Casing, 42-Water inlet, 43-Water outlet, 44-Piston, 45-Side plate, 46-Drive block, 47-Shaft, 48-Scale plate, 411-Through hole, 50-Bracket, 51-Piston, 52 -Connecting seat, 53-Lightweight vertical rod, 54-Swing rod, 55-Rain shield, 56-Bump, 57-Opening groove, 60-Three-way valve, 61-First water pipe, 62-Second water pipe, 63-Water pump, 64-Water tank, 411-Through hole, 501-Limiting rope, 511-Groove, 512-Through hole, 513-Float, 521-Notch, 522-Through hole, 531-Top cover, 540-Rectangular groove, 561-Curved surface. DETAILED DESCRIPTION

[0033] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts shall fall within the scope of protection of the present invention.

[0034] In the description of the present invention, it should be understood that the terms "opening", "upper", "lower", "thickness", "top", "middle", "length", "inside", "around" and the like indicating orientation or positional relationship are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the components or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0035] Example 1: Please refer to Figure 1-3 As shown, the present invention is a garden irrigation device, comprising a first irrigation unit consisting of 10 rows and 10 columns of first irrigation modules 1, and a second irrigation unit consisting of 9 rows and 9 columns of second irrigation modules 2, the second irrigation modules 2 being located in an area surrounded by four adjacent first irrigation modules 1 distributed in a rectangular shape; when the first irrigation modules 1 form a first irrigation area 10 with an irrigation radius of 5 m, the row spacing and column spacing of the first irrigation modules 1 in the first irrigation unit are both 10 m, and the row spacing and column spacing of the second irrigation modules 2 in the second irrigation unit are both 10 m; and at this time, the second irrigation modules 2 form a second irrigation area 20 with an irrigation radius of 2.1 m; and a third irrigation module 3 is further provided above the second irrigation module 2, the third irrigation module 3 forming four fan-shaped third irrigation areas 30; the third irrigation area 30 is located between two first irrigation areas 10 and one second irrigation area 20, and the third irrigation area 30 fills the boundary blind area between the first irrigation area 10 and the second irrigation area 20.

[0036] To facilitate independently controlled irrigation, the first irrigation module 1 is connected to a first irrigation pipeline equipped with a flow meter A and a valve A, and the second irrigation module 2 is connected to a second irrigation pipeline equipped with a flow meter B and a valve B. The water inlet ends of the second irrigation pipeline and the first irrigation pipeline are connected to water supply equipment such as a water pump, a water supply tower or a municipal fire water pipe.

[0037] In order to conveniently maintain the irrigation radius of the first irrigation module 1 and the second irrigation module 2 during use, it is necessary to control the internal water pressure of the second irrigation pipeline and the first irrigation pipeline during use, and then set a pressure gauge for detecting water pressure on the second irrigation pipeline and the first irrigation pipeline during use.

[0038] When the water inlet ends of the second irrigation pipeline and the first irrigation pipeline are connected to the water pump, the water pump speed is adjusted by the frequency converter to adjust the water pressure.

[0039] When the water inlet ends of the second irrigation pipeline and the first irrigation pipeline are connected to the municipal fire water pipe / water supply tower, the water pressure can be adjusted by adjusting the opening of valve A and valve B.

[0040] During use, since the third irrigation area 30 is located on the outer side of the second irrigation area 20, in order to avoid interference between the water flows of the second irrigation module 2 and the third irrigation module 3 during spraying irrigation, the third irrigation module 3 includes four spray assemblies installed above the second irrigation module 2, and the spray assemblies are fan-shaped; the spray assemblies are connected to the second irrigation pipeline.

[0041] During use, in order to distribute the flow of the second irrigation pipeline into the third irrigation module 3 and the second irrigation module 2, the soil volume of the third irrigation area 30 and the second irrigation area 20 is calculated. The soil volume ratio of the third irrigation area 30 and the second irrigation area 20 is the flow ratio in the third irrigation module 3 and the second irrigation module 2.

[0042] In one possible implementation, Figure 4-5 The second irrigation pipeline is connected to a water flow distributor 4, which includes a housing 40. The housing 40 is provided with a water inlet 42 and two water outlets 43. The water inlet 42 is connected to the second irrigation pipeline, and the two water outlets 43 are connected to the second irrigation module 2 and the third irrigation module 3 respectively. The bottom end of one water outlet 43 is higher than the top end of the other water outlet 43. The housing 40 is provided with a piston 44 along its inner wall. A spring is connected between the piston 44 and the housing 40, and a plurality of through holes 41 are provided on the piston 44. 1; the top and bottom of the piston 44 respectively cover the two water outlets 43; the top guide of the shell 40 is penetrated by a piston column 44 connected to the piston 44, and a pair of side plates 45 are provided on the outer top side of the shell 40. An elliptical driving block 46 is provided between the two side plates 45, and a shaft 47 rotatably mounted on the top of the two side plates 45 is fixed to the driving block 46. One end of the shaft 47 is connected to the dial 48, and then when in use, the dial 48 is manually rotated to drive the driving block 46 to rotate, thereby adjusting the position of the piston.

[0043] Example 2, based on Example 1, in order to prevent blockages caused by water quality from being discovered in a timely manner, a microporous filter is installed at the water inlet end of the first irrigation pipe and the second irrigation pipe, and the pore size of the microporous filter is ≤0.1mm; an ultrasonic oscillator is installed on the microporous filter, and the vibration frequency of the ultrasonic oscillator is 28-40kHz; when flow meter A and / or flow meter B detects that the flow value per unit time is lower than the set threshold, the ultrasonic oscillator is automatically started and an alarm is issued, and the ultrasonic oscillator automatically cleans the microporous filter.

[0044] Example 3, based on Example 1, in order to calculate the irrigation amount, reduce ineffective irrigation, and improve resource utilization, a soil moisture sensor network is further provided. The sensor network includes humidity probes distributed in the first irrigation area 10 and the second irrigation area 20; the controller is connected to the weather station, and the temperature in the future t time is obtained from the weather station, and the controller has a built-in irrigation decision algorithm Q=R t -R1*S,Q1=a*T1 2 +T2 2 +……+T t 2 *S; in use, it is set that after the irrigation is completed, the irrigation is controlled under the action of volatilization for 1 / 4 cycle so that the soil moisture inside the first irrigation area 10 or the second irrigation area 20 reaches Rt, Rt is the suitable humidity for plants, Q is the required irrigation water volume of the first irrigation area 10 or the second irrigation area 20, S is the soil volume of the first irrigation area 10 or the second irrigation area 20, Q1 is the water volatilization amount of the first irrigation area 10 or the second irrigation area 20 in the next irrigation cycle, R1 is the humidity of the first irrigation area 10 or the second irrigation area 20, R is the calculated theoretical irrigation humidity, a is the evaporation coefficient, T is the temperature, t is the irrigation interval, T1, T2, ... Tt are the predicted temperatures every 1 hour after irrigation, and Rt is the suitable humidity for plants.

[0045] Connect to the weather station to obtain future temperature forecasts to make forward-looking irrigation decisions. High temperature accelerates water evaporation. The algorithm quantifies the cumulative impact of evaporation on soil moisture by accumulating the square of the temperature every hour (T1, T2, ... T6) in the future. The difference R-R1 between the actual R1 measured by the humidity probe and the theoretical R is used to dynamically adjust the irrigation amount Q to avoid the blindness of fixed-cycle irrigation. Therefore, when using it, it is only possible to keep the soil moisture within the suitable humidity range for plants within one irrigation cycle.

[0046] Scenario: Summer hot day, soil volume S = 20m 3 , measured humidity R1 = 30%, target humidity Rt = 50%, predicted temperature for the next 6 hours: T1 = 35°C, T2 = 36°C, T3 = 37°C, T4 = 38°C, T5 = 37°C, T6 = 36°C. Empirical coefficient a = 0.00003.

[0047] Calculate the amount of water needed to replenish the current water shortage: Q = (50% - 30%) * 100m 2 =20%*20m 3 Assume that experience tells us that irrigation is 1m 3 Water can increase the humidity of the area by about 5%, so Q≈(20% / 5%)*1m 3 ≈4m 3 .

[0048] When the program is set, the soil moisture reaches 50% at the time point T2 after the irrigation is completed, that is, extra water needs to be irrigated after irrigation so that the soil moisture reaches 50% after the water volatilization is completed. The precipitation consumed during the period from the completion of irrigation to the time point T2 is Q1 = a*35*35+36+36*S = 1.5m 3 , that is, the soil moisture reaches 57.5% after irrigation is completed.

[0049] In the fourth embodiment, based on the implementation of the soil moisture sensor network and the weather station setting in the third embodiment, when the rainfall is too heavy, it is necessary to collect the excess rainfall. Based on this, a rainwater collection system is also provided to collect rainwater when it rains. The rainwater collection system includes several rainwater collection mechanisms, such as Figure 6-7 The rainwater collecting mechanism includes a vertical pipe 5 which is arranged vertically and the bottom end of which is connected to the inlet and outlet pipes 6. A bracket 50 is fixed to the inner wall of the bottom end of the vertical pipe 5. The bracket 50 is connected to a piston 51 which slides along the inner wall of the vertical pipe 5 through a limit rope 501. The setting of the limit rope 501 limits the maximum distance of the upward movement of the piston 51, and the top of the piston 51 is connected to a connecting seat 52. A lightweight vertical rod 53 is connected to the connecting seat 52. The connecting seats 52 on both sides of the lightweight vertical rod 53 are respectively provided with notches 521. The notches 521 are pivotally connected to a swing rod 54. A rectangular groove 540 is provided on the side of the swing rod 54 close to the lightweight vertical rod 53. A rain shield 55 is connected between the swing rod 54 and the lightweight vertical rod 53; a top cover 531 is provided on the end of the lightweight vertical rod 53 to match the end of the vertical pipe 5; Figure 10 The other end of the inlet and outlet water pipes 6 is connected to the first water pipe 61 and the second water pipe 62 through the three-way valve 60. The second water pipe 62 is connected to the top of the water tank 64, and the first water pipe 61 is connected to the air pump 63. The top of the piston 51 is provided with a groove 511 connected to the through hole 522. A through hole 512 is also provided in the piston 51 below the piston 51. The cross-section of the through hole 512 gradually decreases from the center to both ends, and a float 513 is provided in the through hole 512.

[0050] Furthermore, during use, when it is necessary to collect excess rainfall, air is first injected into the inlet and outlet pipes 6 through the air pump 63. At this time, the piston 51 is prompted to move upward along the inner wall of the vertical pipe 5 under the action of air pressure. At this time, the swing arm 54 and the lightweight vertical rod 53 are both protruded from the top of the vertical pipe 5 under the driving action of the piston 51. After protruding from the top of the vertical pipe 5, the swing arm 54 flips to one side under the action of its own gravity and rests against the end face of the vertical pipe 5. At this time, the rain shield 55 connected between the swing arm 54 and the lightweight vertical rod 53 is unfolded. At this time, after the rainwater blows onto the rain shield 55, it is absorbed by the rain shield 55. The rainwater absorbed on the rain shield 55 flows into the rectangular groove 540 under the action of its own gravity, and flows into the vertical pipe 5 along the rectangular groove 540, and at the same time flows into the water storage tank 64 through the groove 511, the through hole 512, and the inlet and outlet pipes 6 in sequence.

[0051] It should be noted that after the control piston 51 is completely ejected, the air pump 63 is closed, and the three-way valve 60 is controlled to switch, at which time the gas stored in the water inlet and outlet pipe 6 and the vertical pipe 5 is relieved, and at this time the water flowing into the vertical pipe 5 under the action of gravity is returned to the water storage tank 64 through the two water pipes 62.

[0052] Specifically, when the swing rod 54 extends from the end of the vertical pipe 5, the swing rod 54 is in a horizontal state; when the swing rod 54 is in a horizontal state, the height of the bottom side of the rectangular groove 540 gradually increases in the direction away from the lightweight vertical rod 53; the bottom side of the slot 521 is provided with a plurality of through holes 522.

[0053] Specifically, as Figure 8 and 9 The top of the vertical pipe 5 is provided with a plurality of protrusions 56 distributed in a sawtooth shape, the top of each protrusion 56 is provided with an arc surface 561, and an opening groove 57 for clamping the swing rod 54 is formed between the two arc surfaces 561; when the swing rod 54 extends from the end of the vertical pipe 5, the swing rod 54 in a horizontal state is clamped in any opening groove 57 under the action of the arc surface 561, avoiding the rotation of the piston 51 in the vertical pipe 5 under the action of wind.

[0054] As a preferred technical solution of the present application, the description of the terms "one embodiment", "example", "specific example" and the like in the description of the present application means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In the present description, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0055] The preferred embodiments of the application disclosed above are only used to help explain the application. The preferred embodiments do not describe all the details and do not limit the application to the specific embodiments described. Obviously, many modifications and changes can be made according to the content of the present description. The present description selects and describes these embodiments in order to better explain the principles and practical applications of the application, so that those skilled in the art can well understand and utilize the application. The application is limited by the claims and their entire scope and equivalents.

Claims

1. A landscaping irrigation device, characterized by: comprising a first irrigation unit and a second irrigation unit which are independently controlled from each other; Wherein, the first irrigation unit comprises N rows and M columns of first irrigation modules (1); the second irrigation unit comprises K rows and L columns of second irrigation modules (2); The second irrigation module (2) is located within an area enclosed by four adjacent first irrigation modules (1) distributed in a rectangular shape; and the straight-line distance between the second irrigation module (2) and the four first irrigation modules (1) is equal; The first irrigation module (1) forms a first irrigation area (10) with a radius of r1, the row spacing and column spacing of the first irrigation module (1) in the first irrigation unit are both r2, and the row spacing and column spacing of the second irrigation module (2) in the second irrigation unit are both r3; r3 and r2 are the same and are both less than or equal to twice r1; The second irrigation module (2) forms a second irrigation area (20) having a radius r4.

2. A garden irrigation device according to claim 2, characterized in that: The first irrigation module (1) is connected to a first irrigation pipeline provided with a flow meter A and a valve A, and the second irrigation module (2) is connected to a second irrigation pipeline provided with a flow meter B and a valve B; r3 and r2 are the same and both are equal to twice r1; It also includes a controller, which is connected to flow meter A, valve A, flow meter B and valve B.

3. A garden irrigation device according to claim 2, characterized in that: It also includes a third irrigation unit, wherein the third irrigation module (3) is fixed above the second irrigation module (2), and the third irrigation module (3) forms four fan-shaped third irrigation areas (30); The third irrigation area (30) is located between the two first irrigation areas (10) and one of the second irrigation areas (20).

4. A landscaping irrigation device according to claim 3, characterized in that: The third irrigation module (3) comprises four spray assemblies installed above the second irrigation module (2), and the spray assemblies are fan-shaped; The injection assembly is connected to the second irrigation pipeline.

5. A landscaping irrigation device according to claim 4, characterized in that: The second irrigation pipeline is connected to a water flow distributor (4), and the water flow distributor (4) comprises a shell (40), and the shell (40) is provided with a water inlet (42) and two water outlets (43); The water inlet (42) is connected to the second irrigation pipeline, and the two water outlets (43) are respectively connected to the second irrigation module (2) and the third irrigation module (3).

6. A landscaping irrigation device according to claim 5, characterized in that: The bottom end of one water outlet (43) is higher than the top end of the other water outlet (43); The housing (40) is provided with a piston (44) along its inner wall, and the piston (44) is provided with a plurality of through holes (411); The top and bottom of the piston (44) respectively cover the two water outlets (43); The top guide of the housing (40) is penetrated by a piston column (44) connected to the piston (44), a pair of side plates (45) are provided on the outer top side of the housing (40), an elliptical driving block (46) is provided between the two side plates (45), and a shaft (47) rotatably mounted on the top of the two side plates (45) is fixed on the driving block (46), and one end of the shaft (47) is connected to a scale plate (48).

7. A garden irrigation device according to any one of claims 1 to 6, characterized in that: It also includes a soil moisture sensor network, wherein the sensor network includes moisture probes distributed in the first irrigation area (10) and the second irrigation area (20); and the controller is connected to a weather station.

8. A landscaping irrigation device according to claim 7, characterized in that: A microporous filter is provided at the water inlet end of the first irrigation pipe and the second irrigation pipe, wherein the pore size of the microporous filter is ≤0.1 mm; an ultrasonic oscillator is installed on the microporous filter, and the vibration frequency of the ultrasonic oscillator is 28-40 kHz; When the flow meter A and / or the flow meter B detects that the flow rate value per unit time is lower than the set threshold, the ultrasonic oscillator is automatically started and an alarm is issued.

9. A landscaping irrigation device according to claim 8, characterized in that: The rainwater collecting system further comprises a rainwater collecting system comprising a plurality of rainwater collecting mechanisms, wherein the rainwater collecting mechanisms comprise a vertically arranged vertical pipe (5) whose bottom end is connected to an inlet and outlet pipe (6), a bracket (50) being arranged at the bottom of the vertical pipe (5), the bracket (50) being connected to a piston (51) sliding along the inner wall of the vertical pipe (5) via a limiting rope (501), the top of the piston (51) being connected to a connecting seat (52), the connecting seat (52) being connected to a lightweight vertical rod (53), the connecting seats (52) being located on both sides of the lightweight vertical rod (53) being respectively provided with notches (521), the notches (521) being pivotally connected to a swinging rod (54), the swinging rod (54) being provided with a rectangular groove (540) on a side close to the lightweight vertical rod (53), and a rain shield (55) being connected between the swinging rod (54) and the lightweight vertical rod (53); The end of the lightweight vertical rod (53) is provided with a top cover (531) that fits over the end of the vertical tube (5); The other end of the water inlet and outlet pipe (6) is connected to the first water pipe (61) and the second water pipe (62) through a three-way valve (60); the second water pipe (62) is connected to the top of the water storage tank (64); and the first water pipe (61) is connected to the air pump (63); When the swing rod (54) extends from the end of the vertical tube (5), the swing rod (54) turns over to one side under the action of its own weight and abuts against the end surface of the vertical tube (5), and the swing rod (54) is in a horizontal state at this time; When the swing rod (54) is horizontal, the height of the bottom side of the rectangular groove (540) gradually increases in a direction away from the light vertical rod (53); A plurality of through holes (522) are provided on the bottom side of the notch (521), a groove (511) communicating with the through holes (522) is provided on the top of the piston (51), and a through hole (512) is further provided in the piston (51) below the piston (51), wherein the cross section of the through hole (512) gradually decreases from the center to both ends, and a float (513) is provided in the through hole (512).

10. A landscaping irrigation device according to claim 9, characterized in that: The top of the vertical tube (5) is provided with a zigzag-shaped protrusion (56), and arc-shaped surfaces (561) are respectively provided on both sides of the top of the protrusion (56). An open groove (57) for clamping the swing rod (54) is formed between the two arc-shaped surfaces (561).

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