Water and fertilizer integrated device for farmland irrigation and digital farmland automatic control system

Abstract

The invention relates to a water and fertilizer integrated device for farmland irrigation and a digital farmland automatic control system, the water and fertilizer integrated device comprises a mixing box for mixing water and fertilizer, the top surface of the mixing box is provided with a feed inlet communicated with the inner cavity of the mixing box, and one surface of the lower part of the mixing box is provided with a first electromagnetic valve communicated with the inner cavity of the mixing box; a material storage box is movably installed in the mixing box and can be inserted into the mixing box or taken out of the mixing box through a feeding port, the feeding port communicated with an inner cavity of the material storage box is formed in one face of the upper portion of the material storage box, the side wall of the material storage box is of a leakage net structure, and leakage holes in the side wall of the material storage box are smaller than fertilizer particles. When solid fertilizer and water are separated and mixed through the material storage box, the solid fertilizer, stone grains and other solids are blocked in the material storage box through the leakage net structure, so that when the fertilizer liquid is output through the first electromagnetic valve, the solids cannot be mixed in the fertilizer liquid, and the possibility that the spray head is blocked by sundries during spray irrigation is further reduced.

Description

Technical Field

[0001] The invention relates to the technical field of crop irrigation, and in particular to a farmland irrigation water and fertilizer integrated device and a digital farmland automation control system. Background Art

[0002] Integrated water-fertilizer technology refers to a new agricultural technology that integrates irrigation and fertilization. Solid soluble fertilizers are mixed with water, and then the crops are irrigated through sprinkler irrigation and other technologies.

[0003] When the existing integrated water-fertilizer device is used, solid fertilizers will clump during transportation, and some solid fertilizers have large particles, which leads to a low rate of fertilizer dissolution in water, thereby affecting the overall water-fertilizer irrigation efficiency.

[0004] The prior art rotates the grinding head, and the distance between the grinding head and the feed hopper decreases as the height decreases. Therefore, during the rotation of the grinding head, large particles and agglomerated fertilizers are gradually ground to reduce the volume of the fertilizer particles, which then fall into the mixing box through the feeding pipe. In conjunction with the work of the stirring component, the fertilizer dissolution efficiency is increased, thereby improving the efficiency of the overall water-fertilizer integrated irrigation operation.

[0005] Although the device solves the existing technical problems, the stirring component of the device is a single-axis stirring device. The solid fertilizer and water entering the mixing box are mixed, stirred and dissolved in the same direction, and it still takes a long time to achieve the purpose of sufficient mixing and dissolution. Then, the fertilizer liquid with larger particles of solid fertilizer that have not been completely dissolved and impurities is transported to the nozzle through a pipeline and sprayed out through the nozzle for fertilizer liquid irrigation. In this process, the nozzle is easily blocked, affecting the spraying of the fertilizer liquid. Summary of the invention

[0006] In view of this, the purpose of the present invention is to provide a water-fertilizer integrated device for farmland irrigation and a digital farmland automation control system to solve the problem that impurities or undissolved solid fertilizers are easily mixed into the fertilizer liquid in the existing water-fertilizer integrated device, and when the fertilizer liquid is transported to the nozzle for fertilizer liquid spraying, the impurities or undissolved solid fertilizers are easily blocked by the spray holes of the nozzle.

[0007] The present invention is achieved through the following technical solutions:

[0008] A water-fertilizer integrated device for farmland irrigation comprises a mixing box for mixing water and fertilizer, a top surface of the mixing box being provided with a feed port connected to its inner cavity, a lower side of the mixing box being provided with a first solenoid valve connected to its inner cavity, a storage box being movably installed in the mixing box, the storage box being able to be inserted into the mixing box or taken out of the mixing box through the feed port, a top side of the storage box being provided with a feed port connected to its inner cavity, a side wall of the storage box being a mesh structure, and the holes in the side wall of the storage box being smaller than fertilizer particles.

[0009] Furthermore, the feed port includes a material storage tank and a connecting port, and the top surface and bottom surface of the connecting port are respectively connected to the material storage tank and the inner cavity of the mixing box;

[0010] The bottom surface of one side of the material storage trough is connected to the connecting port, and the other side surface is an inclined surface, and the distance between the upper end of the inclined surface and the connecting port is greater than the distance between the lower end and the connecting port.

[0011] Furthermore, an inclined block is provided on the top surface of the storage box, and a side of the inclined block close to the connecting port is also an inclined surface, and the distance between the upper end of the inclined surface and the connecting port is greater than the distance between the lower end and the connecting port.

[0012] Furthermore, a stirring assembly for mixing water and fertilizer is provided in the inner cavity of the mixing box, and the stirring assembly includes two stirring members that rotate relative to each other and a driving part for driving the two stirring members to rotate, and the two stirring members are respectively located on both sides of the storage box;

[0013] The stirring member comprises a rotating rod and a plurality of stirring plates evenly distributed along the circumference of the rotating rod.

[0014] Furthermore, the driving unit includes two meshing gears and a motor, the two gears are coaxially connected to two rotating rods respectively, and one end of one of the rotating rods is connected to the output end of the motor.

[0015] Furthermore, an incomplete gear is coaxially mounted on one of the rotating rods, and a vertically extending rack portion is provided on a side of the storage box facing the incomplete gear. The rack portion is located on the rotation trajectory of the teeth of the incomplete gear, and the incomplete gear can engage with the rack portion by rotating.

[0016] Furthermore, an elastic support member is provided on a side surface of the material storage trough opposite to its inclined surface, a baffle is provided on the top surface of the elastic support member, and two ends of the elastic support member are respectively connected to the baffle and the material storage trough.

[0017] Furthermore, an observation cabin is provided on one side outer wall of the mixing box, and a through hole for communicating with the inner cavity of the observation cabin is provided on the side wall of the mixing box;

[0018] The outer wall of the mixing box on which the observation cabin is installed is also provided with a light unit and a receiving unit, the light unit and the receiving unit are respectively located on both sides of the observation cabin, and the output end of the light unit and the input end of the receiving unit are both facing the observation cabin;

[0019] The walls of the observation cabin are all transparent.

[0020] A digital farmland automation control system includes a farmland irrigation water and fertilizer integrated device, a local machine room control center and a remote control unit. The local machine room control center includes a local network unit, a monitoring display screen, a status display screen and a control plot display screen.

[0021] Furthermore, the local network unit includes a switch, a 4G communication management machine, a central control management machine, an operating computer, a fiber optic transceiver, a WI FI access point, a firewall, a hard disk recorder and a bridge;

[0022] The remote control unit includes a water pool, a pumping station, filtration, fertilization, and monitoring.

[0023] The beneficial effects of the present invention are:

[0024] In the farmland irrigation water-fertilizer integrated device and digital farmland automation control system, when solid fertilizer and water are separated and mixed through a storage box, solid fertilizer and stone particles and other solids are blocked in the storage box through a leakage net structure, so that when the fertilizer liquid is output through the first solenoid valve, the solids will not be mixed in the fertilizer liquid, thereby reducing the possibility of the nozzle being blocked by debris during sprinkler irrigation.

[0025] Other advantages, objectives and features of the present invention will be described in the following description to some extent, and to some extent, will be obvious to those skilled in the art based on the following examination and study, or can be taught from the practice of the present invention. The objectives and other advantages of the present invention can be realized and obtained through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 Schematic diagram of the three-dimensional structure of the present invention (first viewing angle);

[0027] Figure 2 Schematic diagram of the three-dimensional structure of the present invention (second viewing angle);

[0028] Figure 3 It is a schematic diagram of the three-dimensional structure of the present invention (third viewing angle);

[0029] Figure 4 It is a schematic diagram of the three-dimensional structure when the mixing box and the material storage box of the present invention are separated;

[0030] Figure 5It is a schematic diagram of the internal structure of the mixing box of the present invention;

[0031] Figure 6 It is a cross-sectional view of the mixing box and the material storage box of the present invention (first viewing angle);

[0032] Figure 7 It is a cross-sectional view of the mixing box and the material storage box of the present invention (second viewing angle);

[0033] Figure 8 It is a structural schematic diagram of the material storage box of the present invention;

[0034] Fig. 9 It is the overall system principle diagram of the present invention;

[0035] Fig.10 It is the principle diagram of the first central control system of the present invention.

[0036] In the figure:

[0037] 1. Mixing box; 101. First solenoid valve; 2. Material storage box; 201. Feed inlet; 202. Tilt block; 203. Rack part; 3. Material storage trough; 301. Connecting port; 4. Stirring part; 401. Rotating rod; 402. Stirring plate; 5. Driving part; 501. Gear; 502. Motor; 6. Incomplete gear; 7. Elastic support member; 701. Baffle; 8. Observation cabin; 9. Light unit; 901. Receiving unit; 10. Second solenoid valve; 11. Touch screen. DETAILED DESCRIPTION

[0038] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings here can be arranged and designed in various different configurations.

[0039] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention claimed for protection, but merely represents selected 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.

[0040] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0041] In the above description of the present invention, it should be noted that the terms "one side", "the other side", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship in which the product of the invention is usually placed when in use, which is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0042] In addition, the term "same" does not mean that the parts must be absolutely the same, but slight differences are allowed. The term "vertical" only means that the positional relationship between the parts is more vertical than "parallel", and does not mean that the structure must be completely vertical, but can be slightly tilted.

[0043] See also Figure 1-10 The present invention provides a technical solution: a water-fertilizer integrated device for farmland irrigation, comprising a mixing box 1 for mixing water and fertilizer, the top surface of the mixing box 1 is provided with a feed port 201 connected to its inner cavity, a lower side of the mixing box 1 is provided with a first solenoid valve 101 connected to its inner cavity, a storage box 2 is movably installed in the mixing box 1, the storage box 2 can be inserted into the mixing box 1 through the feed port 201 or taken out of the mixing box 1, a upper side of the storage box 2 is provided with a feed port 201 connected to its inner cavity, the side wall of the storage box 2 is a mesh structure, and the holes in the side wall of the storage box 2 are smaller than the fertilizer particles.

[0044] The operator can deliver solid fertilizer and water into the mixing box 1 through the feed port 201, and the operator can connect a delivery pipe with a nozzle installed at the first solenoid valve 101 to deliver the fertilizer liquid in the mixing box 1 to the nozzle for sprinkler irrigation through the delivery pipe and the first solenoid valve 101. An electric control switch is installed on the first solenoid valve 101;

[0045] When in use, first, the operator takes the storage box 2 out of the mixing box 1, and pours the solid fertilizer into the storage box 2 through the feed port 201, then delivers water to the mixing box 1, and inserts the storage box 2 filled with solid fertilizer into the mixing box 1 through the feed port 201. Since the side wall of the storage box 2 is a mesh structure, the water in the mixing box 1 can contact the fertilizer through the part of the storage box 2 located in the mixing box 1, and then the fertilizer and water are mixed to form a fertilizer liquid, and the fertilizer liquid is delivered to the sprinkler head through the first solenoid valve 101 and the delivery pipe for sprinkler irrigation.

[0046] In the above process, when the solid fertilizer and water are separated and mixed by the storage box 2, the solid fertilizer and solids such as stones are blocked in the storage box 2 by the leakage mesh structure, so that when the fertilizer liquid is output through the first solenoid valve 101, the solids will not be mixed in the fertilizer liquid, thereby reducing the possibility of the nozzle being blocked by debris during sprinkler irrigation.

[0047] In this embodiment: the feed port 201 includes a material storage tank 3 and a connecting port 301, and the top surface and bottom surface of the connecting port 301 are respectively connected to the material storage tank 3 and the inner cavity of the mixing box 1;

[0048] The bottom surface of one side of the material storage tank 3 is connected to the connection port 301 , and the other side surface is an inclined surface, and the distance between the upper end of the inclined surface and the connection port 301 is greater than the distance between the lower end and the connection port 301 .

[0049] The storage tank 3 is used as a storage tank for filling solid fertilizers. The operator can place the solid fertilizers in the storage tank 3 in advance. At this time, the solid fertilizers in the storage tank 3 are located above the storage box 2. The connecting port 301 is used as a channel for the storage tank 3 to communicate with the inner cavity of the mixing box 1, so that the solid fertilizers in the storage tank 3 can enter the storage box 2 through the connecting port 301.

[0050] During specific use, the operator can put solid fertilizer into the storage tank 3 to make the solid fertilizer accumulate in the storage tank 3. Since the side of the storage tank 3 away from the connecting port 301 is an inclined surface, that is, the bottom wall supporting the solid fertilizer is in an inclined state, the center of gravity of the accumulated solid fertilizer is pushed toward the connecting port 301.

[0051] When the operator pulls the storage box 2 up to a certain extent, the feed port 201 is exposed above the connection port 301 , and the accumulated solid fertilizers roll toward the feed port 201 under the influence of gravity, thereby transporting the solid fertilizers into the storage box 2 .

[0052] In this embodiment: the top surface of the storage box 2 is provided with an inclined block 202, and the side of the inclined block 202 close to the connecting port 301 is also an inclined surface, and the distance between the upper end of the inclined surface and the connecting port 301 is greater than the distance between the lower end and the connecting port 301.

[0053] Among them, when the storage box 2 is inserted into the mixing box 1, the connecting port 301 is located between the tilting block 202 and the storage tank 3, and the lower ends of the tilting surfaces of the tilting block 202 and the storage tank 3 are both close to the connecting port 301, so that when the storage box 2 is inserted into the mixing box 1, the solid fertilizer is not easy to accumulate on the storage box 2 so that it is not easy for the operator to take out the storage box 2.

[0054] In this embodiment: a stirring assembly for mixing water and fertilizer is arranged in the inner cavity of the mixing box 1, and the stirring assembly includes two stirring members rotating relative to each other and a driving part 5 for driving the two stirring members to rotate, and the two stirring members are respectively located on both sides of the storage box 2;

[0055] The stirring member includes a rotating rod 401 and a plurality of stirring plates 402 evenly distributed along the circumference of the rotating rod 401 .

[0056] The storage box 2 is inserted into the mixing box 1, and the solid fertilizer in the storage box 2 is in static contact with the water. The mixing efficiency of the solid fertilizer and the water is improved by stirring the water through the stirring assembly, and the rotating rod 401 rotates to drive the multiple stirring plates 402 to stir the water in the mixing box 1;

[0057] During specific use, the driving unit 5 drives the two stirring members to rotate on the opposite sides of the storage box 2 to stir the water on the opposite sides of the storage box 2. Since the two stirring members rotate in opposite directions, the water on the opposite sides of the storage box 2 is prompted to flow in opposite directions, so that the water flows on both sides through the side walls of the storage box 2 and the solid fertilizer inside it is better mixed.

[0058] In this embodiment, the driving unit 5 includes two meshing gears 501 and a motor 502 . The two gears 501 are coaxially connected to two rotating rods 401 , respectively. One end of one of the rotating rods 401 is connected to the output end of the motor 502 .

[0059] When in use, the motor 502 is started to drive one of the rotating rods 401 to rotate, and the other rotating rod 401 is driven through two meshing gears 501 to cause the two rotating rods 401 to rotate in opposite directions.

[0060] In this embodiment: an incomplete gear 6 is coaxially mounted on one of the rotating rods 401, and a vertically extending rack portion 203 is provided on a side of the storage box 2 facing the incomplete gear 6, and the rack portion 203 is located on the rotation trajectory of the gear teeth of the incomplete gear 6, and the incomplete gear 6 can engage with the rack portion 203 by rotating.

[0061] Among them, the angle of the gear teeth on the incomplete gear 6 is 0-180°; due to the incomplete number of gear teeth on the incomplete gear 6, the rotation of the rotating rod 401 can drive the incomplete gear 6 to engage or disengage with the rack portion 203 on the storage box 2. The rotating rod 401 and the side of the incomplete gear 6 close to the storage box 2 rotate from bottom to top, causing the rack portion 203 on the storage box 2 to engage with the incomplete gear 6. As the incomplete gear 6 gradually rotates, the storage box 2 gradually rises until the rack portion 203 on the storage box 2 disengages from the incomplete gear 6, and the storage box 2 loses the support of the incomplete gear 6 and naturally falls downward, so as to cause the storage box 2 to intermittently move up and down, increase the mixing efficiency of the solid fertilizer and water therein, and also move the feed port 201 to be exposed above the moving port, so that the solid fertilizer in the storage trough 3 can enter the storage box 2.

[0062] In this embodiment: an elastic support member 7 is provided on a side surface of the material storage trough 3 opposite to its inclined surface, a baffle 701 is provided on the top surface of the elastic support member 7, and both ends of the elastic support member 7 are respectively connected to the baffle 701 and the material storage trough 3.

[0063] When the elastic support member 7 stretches naturally, its end pushes the baffle 701 upward under the action of elastic force, and the baffle 701 and the elastic support member 7 are both located on the bottom surface of the tilting block 202;

[0064] During specific use, when the storage box 2 makes intermittent up and down movements in the mixing box 1, when the storage box 2 moves downward, the tilting block 202 will squeeze the baffle 701. At this time, the elastic support member 7 contracts and elastically stores energy to cushion the storage box 2, so that the storage box 2 is not easy to collide with the mixing box 1 when falling downward, thereby effectively improving the durability of the storage box 2.

[0065] In this embodiment: an observation cabin 8 is provided on one side outer wall of the mixing box 1, and a through hole for communicating with the inner cavity of the observation cabin 8 is provided on the side wall of the mixing box 1;

[0066] The walls of the observation cabin 8 are all transparent.

[0067] The observation cabin 8 is composed of a plurality of plates made of acrylic or glass, and the bottom surface of the observation cabin 8 is flush with the bottom surface of the mixing box 1;

[0068] During specific use, the operator can observe the mixed fertilizer liquid in the mixing box 1 through the observation cabin 8 to observe the mixing degree of water and solid fertilizer.

[0069] In this embodiment: the outer wall of the mixing box 1 on which the observation cabin 8 is installed is also provided with a light unit 9 and a receiving unit 901, the light unit 9 and the receiving unit 901 are respectively located on both sides of the observation cabin 8, and the output end of the light unit 9 and the input end of the receiving unit 901 are both facing the observation cabin 8.

[0070] The light unit 9 is a hollow cathode lamp or an electrodeless discharge lamp; the receiving unit 901 includes an atomizer, a spectroscopic system (monochromator) and a detection system composed of a detector (photomultiplier tube), an amplifier, a logarithmic converter and a terminal.

[0071] During specific use, light is emitted from one side of the observation cabin 8 through the light unit 9, and the light passes through the two ends of the observation cabin 8 in turn and shines on the receiving unit 901, and the receiving unit 901 performs spectral analysis on the received light, and the element content in the fertilizer liquid is determined by the spectral analysis method, thereby obtaining the fertilizer concentration of the mixed fertilizer liquid.

[0072] In order to achieve better technical effects, the mixing box 1 is also provided with a second solenoid valve 10 for supplying water to the mixing box 1, and the second solenoid valve 10 is provided with a flow detection unit;

[0073] A touch screen 11 is disposed on one side of the mixing box 1 , and the touch screen 11 is electrically connected to the flow detection unit, the receiving unit 901 and the motor 502 , respectively.

[0074] The touch screen 11 is electrically connected to the flow detection unit, the light unit 9, the terminal, the first solenoid valve 101, the second solenoid valve 10 and the motor 502, and the second solenoid valve 10 is connected to a water pump;

[0075] During specific use, the operator can respectively start the first solenoid valve 101, the second solenoid valve 10 and the motor 502 through the touch screen 11, and receive the flow detected by the flow detection unit and the element content obtained from the terminal spectral analysis of the fertilizer liquid through the terminal.

[0076] A digital farmland automation control system includes a farmland irrigation water and fertilizer integrated device, a local machine room control center and a remote control unit. The local machine room control center includes a local network unit, a monitoring display screen, a status display screen and a control plot display screen.

[0077] See also Figure 9-10 Among them, the monitoring display screen, the status display screen and the touch screen are integrated screens to form a multi-screen structure through a local network unit.

[0078] The remote control unit (RCU) and the central control system monitoring layer control management machine are connected to the interface of the main switch as a node in the network, forming a star distribution structure. The control management machine is responsible for the operation of the entire station and the management of its historical data, while receiving and processing various real-time information. Only the host has signal output, and the host and standby machines should be able to track each other and realize automatic and manual switching.

[0079] In order to ensure the clock consistency of the central control system control management machine, remote control unit (RCU) equipment, and the consistency of the monitoring system and the dispatch center clock, the dispatch center network timing method is generally used to ensure the consistency of the system clock.

[0080] In this embodiment: the local network unit includes a switch, a 4G communication management machine, a central control management machine, an operation computer, a fiber optic transceiver, a WI FI access point, a firewall, a hard disk recorder and a bridge;

[0081] The remote control unit includes a water pool, a pumping station, filtration, fertilization, and monitoring.

[0082] Among them, the switch, 4G communication management machine, central control management machine, operating computer, optical fiber transceiver, WI FI access point, firewall, hard disk recorder and bridge are directly or indirectly electrically connected to realize data transmission or interaction. At least one memory for storing data is provided in the central control management machine, and the switch, 4G communication management machine, operating computer, optical fiber transceiver, WI FI access point, firewall, hard disk recorder and bridge perform various functional applications and data processing through the memory.

[0083] The memory may be, but is not limited to, a random access memory (RAM), a read-only memory (ROM), a programmable read-only memory (PROM), an erasable programmable read-only memory (EPROM), an electrically erasable read-only memory (EEPROM), a disk or a solid-state hard disk, etc. The memory is used to store a program, and the processor executes the program after receiving an execution instruction.

[0084] The remote control unit (RCU) includes a fiber optic transceiver, an Ethernet interface logic controller or (intelligent controller), a transmitter, an operation control component, etc., and executes sensors such as water level, pressure, flow, and valves, motors, etc.

[0085] The communication management machine software adopts LINUX operating system and mainstream database, the operating computer adopts Windows operating system, the internal LAN achieves the goal of dedicated network through VLAN or ACL, and the control management machine and external access are effectively protected by network security devices such as firewall / VPN.

[0086] The LNU cabinet includes power distribution, cabinet, UPS power supply, centralized power supply, network distribution frame, fiber optic distribution terminal box, fiber optic transceiver, Ethernet switch, hard disk recorder, control management machine, communication management machine, operating computer, computer keyboard, etc.

[0087] The local network unit (LNU cabinet) is based on the control management machine as the control core, and communicates with the cloud service dispatch center through the communication management machine (4G wireless network). The local network forms a full optical fiber network through switches and optical fibers. The RCU in each control unit (such as water pumps, frequency conversion, filtration, fertilization, etc.) is converted into RS485 communication, DI / DO / AI and other signals through the optical fiber network. The control signals and sensor signals on the left and right are connected through the RCU to meet all monitoring and centralized control functions, with superior performance, mature and stable. Each RCU fiber optic network wiring provides the first centralized control standardized network layout. All modules use standard optical fiber network transceiver modules and network switching modules. LNU communicates conveniently with the cloud platform through 4G or Ethernet. A UPS power supply with communication function is used in LNU to ensure that there is no malfunction when the power is suddenly interrupted or restored or the voltage fluctuates. When the power fails, the signal can be collected through RS485 to send an alarm signal to the cloud service dispatch system. The local control management service database should be built-in and can be backed up with the cloud. LNU has functions such as power failure protection, external power isolation and power recovery self-start. The LNU control management machine is equipped with rich and mature system software, support software and application software to realize the centralized control function of the LNU unit and meet its technical performance requirements. The I / O points of the LNU are completed through the optical fiber / Ethernet RCU, which has strong scalability. The head central control system is equipped with an uninterruptible power supply as an emergency backup power supply. The uninterruptible power supply provides a short-term emergency power supply of not less than 30 minutes when the power failure of the irrigation head occurs. When the DC power supply system is used, the inverter equipment should be used as the backup power supply, and the control management machine should be notified through serial communication.

[0088] Therefore, on the basis of the automated measurement and control infrastructure, the first central control system and field control system are built to support irrigation and fertilization through the first central control system software and mobile phone APP, and real-time monitoring of the liquid level, pipeline water outlet pressure, pipeline flow and water storage capacity of the reservoir can be carried out to achieve remote monitoring and operation management of efficient water-saving irrigation; and the automated information data of each area (pipeline flow data, pipeline pressure data, video monitoring data, water pump start and stop status, fertilizer flow, mother liquid tank status and valve switch status, etc.) is uploaded to the central control room through Category 5e twisted pair cable, fiber optic Ethernet network, and 4G for overall management and scheduling.

[0089] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solution of the present invention can be modified or replaced by equivalents without departing from the purpose and scope of the technical solution of the present invention, which should be included in the scope of the claims of the present invention.

Claims

1. A water-fertilizer integrated device for farmland irrigation, comprising a mixing box (1) for mixing water and fertilizer, wherein the top surface of the mixing box (1) is provided with a feed inlet (201) communicating with its inner cavity, and a first solenoid valve (101) communicating with its inner cavity is provided on one side of the lower part of the mixing box (1), characterized in that: A material storage box (2) is movably installed in the mixing box (1); the material storage box (2) can be inserted into the mixing box (1) or taken out of the mixing box (1) through the feed port (201); one side of the upper part of the material storage box (2) is provided with a feed port (201) connected to its inner cavity; the side wall of the material storage box (2) is a mesh structure; the holes in the side wall of the material storage box (2) are smaller than the fertilizer particles.

2. The integrated water and fertilizer device for farmland irrigation according to claim 1, characterized in that: The feed port (201) comprises a material storage tank (3) and a connecting port (301), and the top surface and bottom surface of the connecting port (301) are respectively connected to the material storage tank (3) and the inner cavity of the mixing box (1); The bottom surface of one side of the material storage trough (3) is in communication with the connection port (301), and the other side surface is an inclined surface, wherein the distance between the upper end of the inclined surface and the connection port (301) is greater than the distance between the lower end and the connection port (301).

3. The integrated water and fertilizer device for farmland irrigation according to claim 2, characterized in that: The top surface of the material storage box (2) is provided with an inclined block (202), and a surface of the inclined block (202) close to the connection port (301) is also an inclined surface, and the distance between the upper end of the inclined surface and the connection port (301) is greater than the distance between the lower end and the connection port (301).

4. The integrated water and fertilizer device for farmland irrigation according to claim 1 or 2, characterized in that: The mixing box (1) has an inner cavity provided with a stirring assembly for mixing water and fertilizer, the stirring assembly comprising two stirring members that rotate relative to each other and a driving unit (5) for driving the two stirring members to rotate, the two stirring members being respectively located on two sides of the storage box (2); The stirring member comprises a rotating rod (401) and a plurality of stirring plates (402) evenly distributed along the circumference of the rotating rod (401).

5. The integrated water and fertilizer device for farmland irrigation according to claim 4, characterized in that: The driving part (5) comprises two meshing gears (501) and a motor (502), wherein the two gears (501) are coaxially connected to two rotating rods (401) respectively, and one end of one of the rotating rods (401) is connected to the output end of the motor (502).

6. The farmland irrigation water and fertilizer integrated device and digital farmland automation control system according to claim 5, characterized in that: An incomplete gear (6) is coaxially mounted on one of the rotating rods (401); a vertically extending rack portion (203) is provided on a side of the storage box (2) facing the incomplete gear (6); the rack portion (203) is located on the rotation trajectory of the gear teeth of the incomplete gear (6); and the incomplete gear (6) can mesh with the rack portion (203) by rotating.

7. The integrated water and fertilizer device for farmland irrigation according to claim 2, characterized in that: An elastic support member (7) is provided on a side surface of the material storage trough (3) opposite to its inclined surface, a baffle (701) is provided on the top surface of the elastic support member (7), and two ends of the elastic support member (7) are respectively connected to the baffle (701) and the material storage trough (3).

8. The integrated water and fertilizer device for farmland irrigation according to claim 4, characterized in that: An observation cabin (8) is provided on one side outer wall of the mixing box (1), and a through hole for communicating with the inner cavity of the observation cabin (8) is provided on the side wall of the mixing box (1); The outer wall of the mixing box (1) on which the observation cabin (8) is installed is also provided with a light unit (9) and a receiving unit (901), the light unit (9) and the receiving unit (901) are respectively located on two sides of the observation cabin (8), and the output end of the light unit (9) and the input end of the receiving unit (901) are both facing the observation cabin (8); The wall surfaces of the observation cabin (8) are all transparent.

9. A digital farmland automation control system, characterized in that: It comprises the integrated water and fertilizer device for farmland irrigation as described in any one of claims 1 to 8, as well as a local machine room control center and a remote control unit, wherein the local machine room control center comprises a local network unit, a monitoring display screen, a status display screen and a control plot display screen.

10. The digital farmland automation control system according to claim 9, characterized in that: The local network unit includes a switch, a 4G communication management machine, a central control management machine, an operating computer, a fiber optic transceiver, a WIFI access point, a firewall, a hard disk recorder and a bridge; The remote control unit includes a water pool, a pumping station, filtration, fertilization, and monitoring.

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