A pre-buried water and fertilizer irrigation device

Abstract

The application discloses a pre-buried water and fertilizer irrigation device, characterized in that the device comprises: pre-buried pipes which are configured in multiple numbers and are all sealed and spliced, the pre-buried pipes are arranged underground in a test field aisle, the pre-buried pipes are provided with PLC controllers at the end portions, the PLC controllers are used for at least controlling the on-off of power pumps in the pre-buried pipes; guide pipes which are linearly arranged in multiple numbers and are all arranged in communication on the pre-buried pipes and extend out of the ground; and a spraying mechanism which is arranged on the guide pipes.

Description

Technical Field

[0001] This invention relates to the field of agricultural irrigation technology, specifically a pre-embedded water and fertilizer irrigation device. Background Technology

[0002] The advantages of pre-buried irrigation include: water and land conservation, eliminating the need for irrigation ditches, field irrigation ditches, and furrows; ease of use, as pre-buried irrigation is simple to operate and can irrigate quickly and efficiently; and a key advantage of pre-buried irrigation is that it can be combined with fertigation to achieve efficient water and fertilizer management.

[0003] For experimental cultivation, irrigation conditions need to be more stringent. For example, during alfalfa cultivation, different types of alfalfa have different requirements for soil moisture in their respective experimental fields, and existing irrigation devices are difficult to irrigate independently. Moreover, existing pre-buried irrigation is mainly based on fixed spraying, which leads to different water and fertilizer intake in different areas of the experimental field, affecting the normal growth of alfalfa.

[0004] Therefore, it is necessary to provide a pre-embedded water and fertilizer irrigation device to solve the problems mentioned in the background art. Summary of the Invention

[0005] To achieve the above objectives, the present invention provides the following technical solution: a pre-embedded water and fertilizer irrigation device, comprising:

[0006] Multiple pre-embedded pipes are configured and are all sealed and spliced ​​together. The pre-embedded pipes are installed underground in the experimental field passage. A PLC controller is connected to the end of each pre-embedded pipe. The PLC controller is used to control the switching of the power pump inside the pipe.

[0007] Multiple guide pipes are linearly arranged, all connected to the pre-embedded pipe and extending out of the ground; and

[0008] The injection mechanism is mounted on the guide tube.

[0009] Furthermore, as a preferred embodiment, the pre-embedded pipe is provided with multiple sector valves, and the multiple sector valves are correspondingly arranged to communicate with the multiple guide pipes.

[0010] Furthermore, as a preferred embodiment, a valve switch is provided at the splice of the pre-embedded pipe to switch the opening and closing state of the sector valve in the corresponding pre-embedded pipe.

[0011] Furthermore, preferably, the injection mechanism includes:

[0012] The base tube, with a sealed rotatable connection, is mounted on the guide tube;

[0013] The injector is connected to the base pipe via a flexible hose; and

[0014] An angle adjustment rod is hinged at one end to the base tube and at the other end to the injector.

[0015] Furthermore, preferably, the adjustment rate and adjustment amount of the angle adjustment rod are both controlled by the PLC controller, and the adjustment method of the angle adjustment rod on the same embedded pipe is consistent, while the adjustment methods of the angle adjustment rod on different embedded pipes are independent of each other.

[0016] Furthermore, preferably, the adjustment angle range of the base tube is 0° or 180°.

[0017] Compared with the prior art, the beneficial effects of the present invention are:

[0018] In this invention, after the experimental field with low water and fertilizer intake is irrigated, the corresponding valve switch controls the sector valve to turn to the closed state, while the other sector valves are in the open state. Therefore, the irrigation work of each experimental field is independent and does not affect each other, thereby improving irrigation efficiency.

[0019] In this invention, the change value of the injector rotation time must satisfy the formula This ensures that the water and fertilizer intake per unit area at any location in an experimental field is uniform, thereby achieving a uniform irrigation effect. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of a pre-embedded water and fertilizer irrigation device.

[0021] Figure 2 A schematic diagram of the spraying mechanism of a pre-embedded water and fertilizer irrigation device;

[0022] Figure 3 A schematic diagram of the working state of the spraying mechanism of a pre-embedded water and fertilizer irrigation device;

[0023] In the diagram: 1. Embedded pipe; 11. PLC controller; 12. Sector valve; 13. Valve switch; 2. Guide pipe; 3. Spraying mechanism; 31. Base pipe; 32. Sprayer; 33. Hose; 34. Angle adjustment rod. Detailed Implementation

[0024] Please see Figure 1-3 In this embodiment, a pre-embedded water and fertilizer irrigation device includes:

[0025] Multiple pre-embedded pipes 1 are configured and are all sealed and spliced ​​together. The pre-embedded pipes 1 are installed underground in the experimental field passage. A PLC controller 11 is connected to the end of the pre-embedded pipe 1. The PLC controller 11 is used to control the switch of the power pump inside it.

[0026] Multiple guide pipes 2 are linearly arranged, all connected to the pre-embedded pipe 1 and extending out of the ground; and

[0027] The injection mechanism 3 is mounted on the guide tube 2.

[0028] It needs to be explained that, such as Figure 1 As shown, each pre-buried pipe 1 is used in different alfalfa experimental fields on its corresponding two sides to reduce the cost of using the pre-buried pipe 1.

[0029] In a preferred embodiment, a plurality of sector valves 12 are provided inside the pre-embedded pipe 1, and the plurality of sector valves 12 are correspondingly provided at the communication points with the plurality of guide pipes 2.

[0030] In a preferred embodiment, a valve switch 13 is provided at the splice of the pre-embedded pipe 1 to switch the opening and closing state of the sector valve 12 in the corresponding pre-embedded pipe 1.

[0031] In other words, the PLC controller 11 records the amount of water and fertilizer in each experimental field, so that the opening time of different control valves 13 is different, so as to carry out precise and quantitative irrigation for experimental fields with different amounts of water and fertilizer, and avoid alfalfa dying from dehydration due to insufficient water and fertilizer or from soil hypoxia due to excessive water and fertilizer.

[0032] It needs to be explained that, such as Figure 2 As shown, after the irrigation of the experimental field with less water and fertilizer intake is completed, the valve switch 13 corresponding to that experimental field controls the sector valve 12 to rotate to the closed state, while the other sector valves 12 are in the open state. Therefore, the irrigation work of each experimental field is independent and does not affect each other, thereby improving irrigation efficiency.

[0033] In a preferred embodiment, the injection mechanism 3 includes:

[0034] The base tube 31 is sealed and rotatably connected to the guide tube 2;

[0035] The injector 32 is connected to the base pipe 31 via a hose 33; and

[0036] Angle adjustment rod 34 is hinged at one end to the base tube 31 and at the other end to the injector 32.

[0037] It should be explained that the angle adjustment lever 34 is used to adjust the spray angle of the jet injector 32 to meet the requirements of spray irrigation at each location in the test field.

[0038] In a preferred embodiment, the adjustment rate and adjustment amount of the angle adjustment rod 34 are both controlled by the PLC controller 11, and the adjustment method of the angle adjustment rod 34 on the same embedded pipe 1 is consistent, while the adjustment methods of the angle adjustment rod 34 on different embedded pipes 1 are independent of each other.

[0039] It should be noted that if the sprayer 32 rotates at a constant speed, the amount of water and fertilizer absorbed by the experimental field per unit area will continue to decrease, resulting in the water and fertilizer absorption of the same experimental field not reaching a uniform amount, causing the alfalfa in the experimental field to not grow normally.

[0040] Therefore, as Figure 3 The specific implementation method is as follows:

[0041] The variation in the distance between water and fertilizer intake in the experimental field should satisfy the following formula:

[0042]

[0043]

[0044] L is the distance between the injector 32 and the ground;

[0045] θ is the initial angle between the injector 32 and the base tube 31;

[0046] L1 is the distance θ maps to in the experimental field;

[0047] Δθ1 is the first angle change of the injector 32;

[0048] ΔL1 represents the distance change of Δθ1 mapped onto the experimental field;

[0049] Δθ2 is the second angle change of the injector 32;

[0050] ΔL2 represents the distance change of Δθ2 mapped onto the experimental field;

[0051] Where, Δθ1=Δθ2, and

[0052]

[0053] ΔS1 represents the change in area of ​​the experimental field mapped by Δθ1;

[0054] ΔS2 represents the change in area of ​​the experimental field mapped by Δθ2;

[0055] H is the sweep width of the injector (a constant);

[0056] However Δφ1 represents the water and fertilizer intake per unit area of ​​the experimental field as mapped by Δθ1.

[0057] Φ1 represents the water and fertilizer intake during the time period corresponding to Δθ1;

[0058] Δφ2 represents the water and fertilizer intake per unit area of ​​the experimental field as mapped by Δθ2.

[0059] Φ2 represents the water and fertilizer intake during the time period corresponding to Δθ2;

[0060] And φ1=V*Δt1, φ2=V*Δt2

[0061] Δt1 is the time interval corresponding to Δθ1;

[0062] Δt2 is the time interval corresponding to Δθ2;

[0063] V represents the water-fertilizer flow rate (a constant).

[0064] To make Δφ1 = Δφ2,

[0065] Therefore, Δθ and its corresponding time interval Δt follow the following pattern:

[0066] In summary, the change in the rotation time of injector 32 must satisfy the formula. This ensures that the water and fertilizer intake per unit area at any location in an experimental field is uniform, thereby achieving a uniform irrigation effect.

[0067] It should also be explained that the water and fertilizer uptake per unit area varies for different experimental fields. Therefore, the initial time variation value Δt should be adjusted according to the water and fertilizer uptake of different experimental fields to ensure that the alfalfa in different experimental fields takes up the appropriate amount of water and fertilizer.

[0068] In a preferred embodiment, the adjustment angle range of the base tube 31 is 0° or 180°.

[0069] In other words, during the actual implementation, the initial irrigation data is entered into the PLC controller 11. During irrigation, if one side of the test field is irrigated, the base pipe 31 is twisted to complete the irrigation of the other side of the test field. During this period, the sector valve 12 is closed to avoid wasting resources.

[0070] The above description is merely a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A pre-embedded water and fertilizer irrigation device, characterized in that, include: Multiple pre-embedded pipes (1) are configured and are all sealed and spliced ​​together. The pre-embedded pipes (1) are set underground in the experimental field passage. The end of the pre-embedded pipe (1) is connected to a PLC controller (11). The PLC controller (11) is used to control the switching of the power pump inside it. Multiple guide pipes (2) are linearly arranged, all connected to the pre-embedded pipe (1) and extending out of the ground; The injection mechanism (3) is mounted on the guide tube (2); The injection mechanism (3) includes: The base tube (31) is sealed and rotatably connected to the guide tube (2); The injector (32) is connected to the base pipe (31) via a hose (33); An angle adjustment rod (34) is hinged at one end to the base tube (31) and at the other end to the injector (32); The variation in the distance between water and fertilizer intake in the experimental field should satisfy the following formula: ⇒ ⇒ The distance between the injector (32) and the ground; The initial angle between the injector (32) and the base tube (31); L1 is The distance mapped onto the experimental field; This refers to the first angle change of the injector (32); for The change in distance mapped onto the experimental field; This refers to the second angle change of the injector (32); for The change in distance mapped onto the experimental field; in, = ,and = , = Δ for The change in area of ​​the experimental field; Δ for The change in area of ​​the experimental field; H is the sweeping width of the injector (32); However = , = Δ for The water and fertilizer intake per unit area of ​​the experimental field is mapped downwards. Φ1 is Water and fertilizer intake during the corresponding time period; Δ for The water and fertilizer intake per unit area of ​​the experimental field is mapped downwards. Φ2 is Water and fertilizer intake during the corresponding time period; and , Δ for Corresponding time period; Δ for Corresponding time period; V represents the water-fertilizer flow rate; Desire to = , Then we get Its corresponding time period Δt follows: = ⇒ The water and fertilizer intake per unit area at any location in the experimental field reached a uniform level.

2. The pre-embedded water and fertilizer irrigation device according to claim 1, characterized in that, The pre-embedded pipe (1) is provided with a plurality of sector valves (12), and the plurality of sector valves (12) are correspondingly arranged at the connection points with the plurality of guide pipes (2).

3. The pre-embedded water and fertilizer irrigation device according to claim 2, characterized in that, A valve switch (13) is provided at the splice of the pre-embedded pipe (1) to switch the opening and closing state of the sector valve (12) in the corresponding pre-embedded pipe (1).

4. The pre-embedded water and fertilizer irrigation device according to claim 1, characterized in that, The adjustment rate and adjustment amount of the angle adjustment rod (34) are controlled by the PLC controller (11), and the adjustment method of the angle adjustment rod (34) on the same embedded pipe (1) is consistent, while the adjustment methods of the angle adjustment rod (34) on different embedded pipes (1) are independent of each other.

5. A pre-embedded water and fertilizer irrigation device according to claim 1, characterized in that, The adjustment angle range of the base tube (31) is 0° or 180°.

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