Pipe network laying system for underground drip irrigation field of alfalfa

Abstract

The invention relates to the technical field of buried drip irrigation, and discloses an alfalfa buried drip irrigation field pipe network laying system which comprises a main pipe and a plurality of branch pipes parallel to the main pipe, a bent connecting long pipe is connected between the main pipe and the corresponding branch pipe, each branch pipe is connected with a plurality of capillary pipes perpendicular to the branch pipe, and the capillary pipes are connected with the main pipe. And the other end of the pesticide and fertilizer adding device is connected with a fertilizer tank assembly through another hose. According to the method, the branch pipes which are vertically connected with the shallowly-buried alfalfa underground water dripping capillary pipes on the ground and the underground deeply-buried water supply main pipe which is parallel to the ground strip direction are laid in parallel up and down, so that the phenomenon that water leaks continuously due to the fact that the underground water dripping capillary pipes are repeatedly rolled by an operation machine in the past is changed; serious damage of mechanical operation to branch pipes and capillary connection joints is avoided, water dripping, fertilizer dripping and pesticide dripping in the field are uniform, water leakage, pressure relief, water leakage and water accumulation are avoided, the survival rate of alfalfa seedlings is high, water is saved, yield is increased, and quality and efficiency are improved.

Description

Technical Field

[0001] The invention relates to the technical field of underground drip irrigation, in particular to an alfalfa underground drip irrigation field pipe network laying system. Background Art

[0002] Alfalfa is a leguminous plant with economic, ecological, and medicinal value. Its primary uses include serving as a high-quality feed, improving soil fertility, providing nutritional benefits, and assisting in regulating human health. It is widely used in agriculture, environmental protection, and the food industry. Alfalfa cultivation requires irrigation, and underground drip irrigation technology delivers water directly to the plant's roots, reducing evaporation losses and significantly improving water resource efficiency. Therefore, it is widely used in alfalfa cultivation.

[0003] A Chinese patent discloses a buried drip irrigation system (authorization publication number CN104255394B). This patented technology ensures that the inlet pressure of the water distribution network is controlled within a safe range, protecting the network. It also prevents the pump from operating in a high-flow, low-lift state for extended periods during startup, preventing overload and improving pump efficiency. It also significantly reduces the frequency of turning and adjusting operating modes during mechanical tillage, facilitating mechanized farming. However, it cannot be used for fertilization, weeding, or pest control during the drip irrigation process, and it cannot effectively prevent pipe blockage. Summary of the Invention

[0004] The purpose of the present invention is to provide an alfalfa buried drip irrigation field pipe network laying system to solve the problems raised in the above background technology.

[0005] To achieve the above object, the present invention provides the following technical solutions:

[0006] An alfalfa underground drip irrigation field pipe network laying system includes a main pipe and several branch pipes arranged parallel to the main pipe. A curved connecting long pipe is connected between the main pipe and the corresponding branch pipe. A solenoid valve is installed between the curved connecting long pipe and the corresponding branch pipe. Each branch pipe is connected to several capillary tubes perpendicular to it. The rear end of the main pipe is connected to a filter through a vertical connecting pipe 2. A dosing and fertilizer applicator is installed at the rear end of the filter. One end of the dosing and fertilizer applicator is connected to a pesticide tank through a hose, and the other end of the dosing and fertilizer applicator is connected to a fertilizer tank assembly through another hose. The capillary tube includes a strip-type pipe, a plurality of inlays are staggered inside the strip-type pipe, and a plurality of drip irrigation assemblies are embedded and installed on the strip-type pipe.

[0007] As a further solution of the present invention: the drip irrigation assembly includes a filter cover located on the inner side of the strip-type pipe, and a drip irrigation head located on the outer side of the strip-type pipe, one end of the filter cover is provided with a threaded joint, the outer side of the threaded joint is sleeved with a baffle, and one end of the drip irrigation head is provided with a plurality of drip holes.

[0008] As a further solution of the present invention: the dosing fertilizer applicator includes a venturi tube, one side of the venturi tube is connected to a curved branch pipe 1, and the other side of the venturi tube is connected to a curved branch pipe 2, the inner side of the venturi tube is located between the curved branch pipe 1 and the curved branch pipe 2. A main valve is installed, and a water inlet is provided at the rear end of the venturi tube, a group of branch pipe valves 1 are installed on the inner side of the curved branch pipe 1 near the venturi tube, and a dosing valve is installed on one side of the curved branch pipe 1, a group of branch pipe valves 2 are installed on the inner side of the curved branch pipe 2 near the venturi tube, and a fertilizer valve is installed on one side of the curved branch pipe 2.

[0009] As a further solution of the present invention: the dosing valve is connected to the pesticide tank through a hose, and the fertilizing valve is connected to the fertilizer tank assembly through a hose.

[0010] As a further solution of the present invention: the fertilizer tank assembly includes a batching tank, a transmission motor is installed in the middle of the upper end of the batching tank, and a liquid adding port and a drug adding port are respectively provided on both sides of the upper end of the batching tank close to the transmission motor, the output end of the transmission motor is fixedly connected to a stirring shaft, and the lower end of the stirring shaft is located inside the batching tank and is fixedly connected to a stirring blade.

[0011] As a further solution of the present invention: a plurality of guide strips are evenly arranged at the bottom end of the interior of the mixing tank, and a bubble disk is installed between two adjacent guide strips, the lower ends of all the bubble disks are connected to an air pipe, and an air compressor is installed at one end of the air pipe.

[0012] As a further solution of the present invention: a collecting cover is provided inside the mixing tank near the lower end of the stirring blade, the rear side of the upper end of the collecting cover is connected to a first-level filter component through a liquid outlet pipe 1, and one side of the bottom end of the first-level filter component is connected to a second-level filter component through a liquid outlet pipe 2.

[0013] As a further solution of the present invention: the first-level filter assembly includes a first-level filter outer shell, and a first-level filter cover spirally engaged with the upper end of the first-level filter outer shell, the inner side wall of the first-level filter outer shell is fixedly connected to a limiting ring 1, and a filter cartridge is provided on the inner side of the first-level filter outer shell and passes through the limiting ring 1, the outer side of the first-level filter outer shell is provided with a liquid inlet 1 at the upper end of the filter cartridge, and a liquid outlet 1 is provided at the bottom of the first-level filter outer shell.

[0014] As a further solution of the present invention: the secondary filter assembly includes a secondary filter outer shell, and a secondary filter cover spirally engaged with the upper end of the secondary filter outer shell, the inner side wall of the secondary filter outer shell is fixedly connected to the limiting ring 2, and a filter core is provided on the inner side of the limiting ring 2 passing through the interior of the secondary filter outer shell, the outer side of the secondary filter outer shell is provided with a liquid outlet 2 at the upper end of the filter core, and the outer side of the secondary filter outer shell is provided with a liquid inlet 2 at the lower end of the filter core, and the bottom of the secondary filter outer shell is provided with a sewage valve.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] The present invention connects the branch pipe shallowly buried in the underground drip capillary of alfalfa vertically above the ground and lays the deep-buried underground water supply main pipe parallel to the direction of the strips, thereby changing the past practice of laying the branch pipe perpendicular to the direction of the strips and causing repeated crushing and continuous leakage by operating machinery. At the same time, a method of laying shallowly buried drip capillary tubes horizontally along the direction of the strips and vertically sowing seeds is adopted, and the branch pipes cannot be crushed by machinery, thereby preventing serious damage to the branch pipes and the joints connected to the capillary tubes by mechanical operations. Water, fertilizer and pesticides are dripped evenly in the field without leaking, pressure relief, water leakage or water accumulation. The alfalfa seedlings have a high survival rate, the seedlings are uniform, full and strong, and water is saved, production is increased, quality is improved and efficiency is enhanced. At the same time, the dosing tank and the fertilizer tank are connected to the drip irrigation pipe, and water-soluble fertilizers and liquid pesticides are added to water and dripped into the field, thereby achieving the purpose of fertilizing, weeding or pest control in the process of drip irrigation. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a structural diagram of the alfalfa buried drip irrigation field pipe network laying system;

[0018] Figure 2 This is a partial cross-sectional structural diagram of the capillary tube in the alfalfa buried drip irrigation field pipe network laying system;

[0019] Figure 3 This is a schematic diagram of the exploded structure of the drip irrigation components in the alfalfa underground drip irrigation field pipe network laying system;

[0020] Figure 4 This is a schematic diagram of the structure of the drip irrigation components in the alfalfa underground drip irrigation field pipe network laying system;

[0021] Figure 5 This is a schematic diagram of the structure of the fertilizer dosing device in the alfalfa underground drip irrigation field pipe network laying system;

[0022] Figure 6 This is a partial cross-sectional structural diagram of a fertilizer tank assembly in the alfalfa buried drip irrigation field pipe network laying system;

[0023] Figure 7 This is a structural diagram of the liquid outlet pipe 1 and the collection cover in the alfalfa buried drip irrigation field pipe network laying system;

[0024] Figure 8 This is a schematic diagram of the disassembled structure of the first-level filter component in the alfalfa buried drip irrigation field pipe network laying system;

[0025] Figure 9 This is a schematic diagram of the exploded anatomical structure of the secondary filtration component in the alfalfa buried drip irrigation field pipe network laying system.

[0026] Figure: 1. Main pipe; 2. Solenoid valve; 3. Capillary tube; 31. Strip pipe; 32. Insert; 33. Drip irrigation assembly; 331. Filter screen; 332. Threaded joint; 333. Drip hole; 334. Drip irrigation head; 335. Baffle; 4. Branch pipe; 5. Bend connecting long pipe; 6. Second vertical connecting long pipe; 7. Fertilizer tank assembly; 71. Mixing tank; 72. Secondary filter assembly; 721. Secondary filter housing; 722. Drain valve; 723. Second liquid inlet; 724. Filter element; 725. Secondary filter cover; 726. Second liquid outlet; 727. Second limiting ring; 73. Primary filter assembly; 731. Primary filter housing; 732. First liquid outlet. 733. Liquid inlet one; 734. Limiting ring one; 735. Filter cartridge; 736. Primary filter cover; 74. Liquid adding port; 75. Drive motor; 76. Dosing port; 77. Stirring shaft; 78. Air pipe; 79. Air compressor; 710. Bubble disk; 711. Guide strip; 712. Collecting hood; 713. Stirring blade; 714. Liquid outlet pipe one; 715. Liquid outlet pipe two; 8. Dosing and fertilizer applicator; 81. Venturi tube; 82. Elbow branch pipe one; 83. Dosing valve; 84. Branch pipe valve one; 85. Water inlet; 86. Main valve; 87. Elbow branch pipe two; 88. Fertilizer valve; 89. Branch pipe valve two; 9. Pesticide tank; 10. Filter. DETAILED DESCRIPTION

[0027] See also Figures 1 to 9In the embodiment of the present invention, the alfalfa underground drip irrigation field pipe network laying system includes a main pipe 1 and a plurality of branch pipes 4 arranged parallel to the main pipe 1. A curved connecting long pipe 5 is connected between the main pipe 1 and the corresponding branch pipe 4. A solenoid valve 2 is installed between the curved connecting long pipe 5 and the corresponding branch pipe 4. The solenoid valve 2 can adjust the size of the liquid flow in the curved connecting long pipe 5; each branch pipe 4 is connected to a plurality of capillary tubes 3 perpendicular to it, the rear end of the main pipe 1 is connected to a filter 10 through a vertical connecting pipe 6, the rear end of the filter 10 is installed with a dosing fertilizer applicator 8, one end of the dosing fertilizer applicator 8 is connected to a pesticide tank 9 through a hose, and the pesticide tank 9 is connected to the pesticide tank 9. The medicine tank 9 is filled with pesticides for weed control or pest control; and the other end of the fertilizer-adding device 8 is connected to a fertilizer tank assembly 7 through another hose. The main pipe 1 is buried 1.3 cm to 1.4 m underground in the alfalfa field, and the capillary tube 3 and the branch pipe 4 are both buried 12 cm to 15 cm underground in the alfalfa field. This changes the previous practice of laying the capillary tubes directly on the surface, and reduces damage to the capillary tubes caused by mechanical rolling during cross-sowing. In addition, the water drips evenly without water accumulation, resulting in a high survival rate for the alfalfa seedlings. The filter 10 and the fertilizer-adding device 8 are both located above the ground through the vertical extension pipe 2 6; and the solenoid valve 2 is located above the ground through the curved connecting pipe 5 for easy operation.

[0028] exist Figure 1 and Figure 2 In the figure, the capillary tube 3 includes a strip-type pipe 31, and a plurality of inlays 32 are staggeredly arranged inside the strip-type pipe 31, and a plurality of drip irrigation components 33 are embedded and installed on the strip-type pipe 31. The inlays 32 can slow down the flow speed of the water flow in the strip-type pipe 31, thereby making the water flow uniform; the water in the strip-type pipe 31 drips from the drip irrigation component 33 into the alfalfa field, and the alfalfa seedlings are drip-irrigated.

[0029] exist Figure 2 、 Figure 3 and Figure 4 In the embodiment, the drip irrigation assembly 33 includes a filter cover 331 located on the inner side of the strip-type pipe 31 and a drip irrigation head 334 located on the outer side of the strip-type pipe 31. A threaded joint 332 is provided at one end of the filter cover 331, and a baffle 335 is sleeved on the outer side of the threaded joint 332. A plurality of drip holes 333 are opened at one end of the drip irrigation head 334. The threaded joint 332 is passed from the inner side of the strip-type pipe 31 to the outer side. Then, the baffle 335 is sleeved on the threaded joint 332, and the drip irrigation head 334 is tightened on the threaded joint 332. Then, the drip irrigation assembly 33 can be installed on the strip-type pipe 31. After the water in the strip-type pipe 31 is filtered by the filter cover 331, it enters the drip irrigation head 334 from the threaded joint 332 and drips from the drip holes 333, thereby drip irrigation of the alfalfa seedlings without clogging.

[0030] exist Figure 1 and Figure 5In the embodiment, the fertilizer dosing device 8 includes a venturi tube 81, one side of the venturi tube 81 is connected to a curved branch pipe 1 82, and the other side of the venturi tube 81 is connected to a curved branch pipe 2 87. A main valve 86 is installed on the inner side of the venturi tube 81 between the curved branch pipe 1 82 and the curved branch pipe 2 87, and a water inlet 85 is provided at the rear end of the venturi tube 81. A group of branch pipe valves 1 84 are installed on the inner side of the curved branch pipe 1 82 near the venturi tube 81. , and a dosing valve 83 is installed on one side of the curved branch pipe 1 82, a group of branch pipe valves 2 89 are installed on the inner side of the curved branch pipe 2 87 near the venturi pipe 81, and a fertilizer valve 88 is installed on one side of the curved branch pipe 2 87. The dosing valve 83 is connected to the pesticide tank 9 through a hose, and the water source is passed from the water inlet 85 to the venturi pipe 81; then the main valve 86 is closed to increase the flow rate and reduce the fluid pressure, so that there is a A certain pressure difference is created; then the dosing valve 83 and the branch valve 84 are opened to allow part of the water flow to enter the bent branch pipe 82. When the water flows through the bent branch pipe 82, a vacuum suction is generated, which evenly draws the liquid pesticide in the pesticide tank 9 into the hose, and then enters the bent branch pipe 82 from the dosing valve 83, and then flows into the venturi tube 81 and mixes with the water in the venturi tube 81; the fertilization valve 88 is connected to the fertilizer tank assembly 7 through a hose. Similarly, Open the fertilizer valve 88 and the branch valve 2 89 to allow part of the water in the venturi tube 81 to enter the bent branch pipe 2 87. When the water flows through the bent branch pipe 2 87, vacuum suction is generated, and the water and fertilizer in the fertilizer tank assembly 7 are evenly sucked into the hose, and then enter the bent branch pipe 2 87 from the fertilizer valve 88. Then, it flows into the venturi tube 81 and mixes with the water in the venturi tube 81, thereby achieving precise dripping of water, fertilizer, and medicine, and realizing the integration of water, fertilizer, and medicine.

[0031] exist Figure 6 and Figure 7In the embodiment, the fertilizer tank assembly 7 includes a batching tank 71, a transmission motor 75 is installed in the middle of the upper end of the batching tank 71, and a liquid addition port 74 and a drug addition port 76 are respectively provided on both sides of the upper end of the batching tank 71 near the transmission motor 75. The output end of the transmission motor 75 is fixedly connected to a stirring shaft 77, and the lower end of the stirring shaft 77 is located inside the batching tank 71 and is fixedly connected to a stirring blade 713. A corresponding amount of water is added from the liquid addition port 74, and a corresponding amount of solid granular fertilizer is added from the drug addition port 76. The stirring shaft 77 and the stirring blade 713 are driven by the transmission motor 75. The blades 713 rotate together, so that the stirring blades 713 stir the water in the batching tank 71, so that the solid granular fertilizer can be dissolved in the water and prepared into water fertilizer; the bottom end of the interior of the batching tank 71 is evenly provided with a plurality of guide strips 711, and a bubble disk 710 is installed between two adjacent guide strips 711, and the lower ends of all the bubble disks 710 are connected to the air pipe 78, one end of the air pipe 78 is installed with an air compressor 79, and the interior of the batching tank 71 is provided with a collection cover 712 near the lower end of the stirring blades 713, and the upper end of the collection cover 712 is provided with a collection cover 712. The rear side of the end is connected to the primary filter assembly 73 through the liquid outlet pipe 1 714, and one side of the bottom end of the primary filter assembly 73 is connected to the secondary filter assembly 72 through the liquid outlet pipe 2 715. The liquid outlet pipe 1 714 passes through the inner side of the batching tank 71, so that the primary filter assembly 73 and the secondary filter assembly 72 are located outside the batching tank 71; the air is compressed by the air compressor 79, and the compressed air flows through the air pipe 78 and is ejected from the bubble disk 710, thereby disturbing the water and fertilizer inside the batching tank 71, so that the solid granular fertilizer that is not completely dissolved and precipitated at the bottom is The materials and impurities float up and gather at the collecting cover 712 along the guide strip 711. At the same time, since compressed air is introduced into the water and fertilizer in the batching tank 71, a pressure difference is formed between the liquid outlet pipe 1 714 and the collecting cover 712, generating a negative pressure. Combined with the negative pressure generated at the bent branch pipe 2 87, the water and fertilizer, incompletely dissolved solid granular fertilizer and impurities enter the liquid outlet pipe 1 714, and then pass through the first-level filter component 73 and the second-level filter component 72 in turn. After being filtered, the clean water and fertilizer flow into the bent branch pipe 2 87 through the hose and the fertilizer valve 88.

[0032] exist Figure 6 、 Figure 7 and Figure 8The filter element 73 includes a first-stage filter housing 731 and a first-stage filter cover 736 screw-engaged and mounted on the upper end of the first-stage filter housing 731. The inner side wall of the first-stage filter housing 731 is fixedly connected to a limiting ring 1 734, and a filter cartridge 735 is provided on the inner side of the limiting ring 1 734 inside the first-stage filter housing 731. The first-stage filter cover 736 is pressed on the upper end of the filter cartridge 735, and the limiting ring 1 734 supports the filter cartridge 735, so that the filter cartridge 735 is firmly fixed inside the first-stage filter housing 731. A liquid inlet 1 733 is provided on the outer side of the first-stage filter housing 731 at the upper end of the filter cartridge 735, and a liquid outlet 1 732 is provided at the bottom of the first-stage filter housing 731. It is connected to the liquid outlet pipe 1 714, and the liquid outlet port 1 732 is connected to the liquid outlet pipe 2 715. Water, fertilizer, incompletely dissolved solid granular fertilizer and impurities enter the primary filter outer shell 731 from the liquid inlet 1 733. After being filtered by the filter cartridge 735 during the downward flow, the incompletely dissolved solid granular fertilizer and impurities are trapped inside the filter cartridge 735, while the water and fertilizer pass through the primary filter outer shell 731 and enter the lower side of the interior of the primary filter outer shell 731, and then flow from the liquid outlet port 1 732 through the liquid outlet pipe 2 715 into the secondary filter assembly 72; the incompletely dissolved solid granular fertilizer in the filter cartridge 735 is continuously dissolved into small particles during the subsequent flow of water and fertilizer; and the impurities can be discharged by opening the primary filter cover 736 and taking out the filter cartridge 735.

[0033] exist Figure 6 、 Figure 7 and Figure 9The filter element 724 is supported by the second limiting ring 727 and the filter element 724 is supported by the second limiting ring 727. The filter element 724 is supported by the second limiting ring 727 and the filter element 724 is supported by the second limiting ring 727. The filter element 724 is supported by the second limiting ring 727, so that the filter element 724 is firmly fixed in the interior of the secondary filter shell 721. The outer side of the secondary filter shell 721 is provided with a second liquid outlet 726 at the upper end of the filter element 724, and the outer side of the secondary filter shell 721 is provided with a second liquid inlet 723 at the lower end of the filter element 724. The bottom of the secondary filter shell 721 is provided with a drain valve 722. The second liquid inlet 723 is connected to the second liquid outlet pipe 715. The second port 726 is connected to the fertilizer valve 88 through a hose. The water and fertilizer, small particles of solid fertilizer that are not completely dissolved, and small particulate impurities after being filtered by the first-stage filter component 73 enter the second-stage filter outer shell 721 from the second liquid inlet 723. During the upward flow, after being filtered by the filter element 724, the small particles of solid fertilizer that are not completely dissolved and small particulate impurities are retained on the outside of the filter element 724. After passing through the filter element 724, the water and fertilizer upwardly flow from the second liquid outlet 726 through the hose and the fertilizer valve 88 into the curved branch pipe 1 82, thereby ensuring the cleanliness of the water and fertilizer and avoiding subsequent pipe blockage. The small particles of solid fertilizer that are not completely dissolved trapped on the outside of the filter element 724 are continuously dissolved during the subsequent water and fertilizer flow process and eventually enter the curved branch pipe 1 82. The small particulate impurities sink to the lower part of the second-stage filter outer shell 721 and can be discharged by opening the drain valve 722.

[0034] The working principle of the present invention is as follows: when drip irrigation is required for alfalfa seedlings in an alfalfa field, first, the main pipe 1 is buried 1.3 cm to 1.4 m underground, the capillary pipe 3 and the branch pipe 4 are buried 12 cm to 15 cm underground, and the fertilizer dosing device 8, the filter 10, and the solenoid valve 2 are all located above the ground; then, the water inlet 85 is connected to an external water source, and after the main pipe valve 86 is opened, water flows along the venturi tube 81 into the filter 10, and the water is filtered by the filter 10. To reduce impurities in the water; the filtered water flows into the main pipe 1 through the vertical extension pipe 2 6; the water is diverted by the main pipe 1 so that the water flows into the corresponding curved connecting pipe 5; at this time, the solenoid valve 2 adjusts the flow of water in the curved connecting pipe 5 to meet the drip irrigation needs; the regulated flow of water enters the branch pipe 4, and then passes through the capillary tube 3 for further diversion. The water flow in the strip-type pipe 31 is uniformed by the insert 32, and then drips from the drip irrigation assembly 33 to the soil to drip irrigate the alfalfa seedlings;

[0035] When it is necessary to weed or deworm the alfalfa seedlings, the corresponding pesticide is added to the pesticide tank 9; the main valve 86 is then closed to a certain pressure difference before and after the main valve 86, and then the branch valve 1 84 and the dosing valve 83 are opened to allow part of the water in the venturi tube 81 to flow into the curved branch pipe 1 82. When the water flows through the curved branch pipe 1 82, a vacuum suction is generated, which evenly draws the liquid pesticide in the pesticide tank 9 into the hose, and then enters the curved branch pipe 1 82 through the dosing valve 83, and then flows into the venturi tube 81, mixes with the water in the venturi tube 81, and finally drips from the drip irrigation assembly 33 to deworm the alfalfa seedlings;

[0036] When it is necessary to fertilize the alfalfa seedlings, first, water is added from the liquid adding port 74, and then solid granular fertilizer is added from the dosing port 76. The transmission motor 75 drives the stirring shaft 77 and the stirring blade 713 to rotate together, so that the stirring blade 713 stirs the water in the batching tank 71, thereby dissolving the solid granular fertilizer in the water to form water-fertilizer; then, the air is compressed by the air compressor 79, and after flowing through the air pipe 78, it is sprayed out from the bubble disk 710, disturbing the water-fertilizer inside the batching tank 71, so that the incompletely dissolved solid granular fertilizer and impurities precipitated in the lower part float up, and gather along the guide strip 711 to the collecting cover 712, and make the liquid discharge pipe 714 and the collecting cover 714 separate. A pressure difference is formed between the collecting cover 712, generating negative pressure; similarly, the main valve 86 is closed, and the fertilizer valve 88 and the branch valve 2 89 are opened, so that part of the water flow in the venturi tube 81 enters the bent branch pipe 2 87, and a vacuum suction is generated when the water flows through the bent branch pipe 2 87; the water, fertilizer, solid granular fertilizer that is not completely dissolved, and impurities enter the liquid outlet pipe 1 714, and then are filtered by the primary filter component 73 and the secondary filter component 72 in turn. The clean water and fertilizer flow into the bent branch pipe 2 87 through the hose and the fertilizer valve 88, and then flow into the venturi tube 81, mix with the water in the venturi tube 81, and finally drip from the drip irrigation component 33 to fertilize the alfalfa seedlings.

[0037] The above is only a preferred specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any technician familiar with this technical field, within the technical scope disclosed by the present invention, who makes equivalent replacements or changes based on the technical solutions and inventive concepts of the present invention, should be covered by the scope of protection of the present invention.

Claims

1. An alfalfa underground drip irrigation field pipe network laying system, comprising a main pipe (1), and a plurality of branch pipes (4) arranged parallel to the main pipe (1), wherein a long curved connecting pipe (5) is connected between the main pipe (1) and the corresponding branch pipe (4), and a solenoid valve (2) is installed between the long curved connecting pipe (5) and the corresponding branch pipe (4), characterized in that: Each branch pipe (4) is connected to a plurality of capillary tubes (3) perpendicular thereto. The rear end of the main pipe (1) is connected to a filter (10) via a second vertical extension pipe (6). A fertilizer dosing device (8) is installed at the rear end of the filter (10). One end of the fertilizer dosing device (8) is connected to a pesticide tank (9) via a hose, and the other end of the fertilizer dosing device (8) is connected to a fertilizer tank assembly (7) via another hose. The capillary tube (3) includes a strip-type pipe (31). A plurality of inserts (32) are staggeredly arranged inside the strip-type pipe (31), and a plurality of drip irrigation assemblies (33) are embedded and installed on the strip-type pipe (31).

2. The alfalfa buried drip irrigation field pipe network laying system according to claim 1, characterized in that: The drip irrigation assembly (33) comprises a filter cover (331) located inside the strip-type pipe (31), and a drip irrigation head (334) located outside the strip-type pipe (31); one end of the filter cover (331) is provided with a threaded joint (332); a baffle (335) is sleeved on the outside of the threaded joint (332); and one end of the drip irrigation head (334) is provided with a plurality of drip holes (333).

3. The alfalfa buried drip irrigation field pipe network laying system according to claim 1, characterized in that: The dosing fertilizer applicator (8) includes a venturi tube (81), one side of the venturi tube (81) is connected to a curved branch pipe 1 (82), and the other side of the venturi tube (81) is connected to a curved branch pipe 2 (87), a main valve (86) is installed on the inner side of the venturi tube (81) between the curved branch pipe 1 (82) and the curved branch pipe 2 (87), and a water inlet (85) is provided at the rear end of the venturi tube (81), a group of branch pipe valves 1 (84) is installed on the inner side of the curved branch pipe 1 (82) near the venturi tube (81), and a dosing valve (83) is installed on one side of the curved branch pipe 1 (82), a group of branch pipe valves 2 (89) is installed on the inner side of the curved branch pipe 2 (87) near the venturi tube (81), and a fertilizer valve (88) is installed on one side of the curved branch pipe 2 (87).

4. The alfalfa buried drip irrigation field pipe network laying system according to claim 3, characterized in that: The dosing valve (83) is connected to the pesticide tank (9) via a hose, and the fertilizing valve (88) is connected to the fertilizer tank assembly (7) via a hose.

5. The alfalfa buried drip irrigation field pipe network laying system according to claim 1, characterized in that: The fertilizer tank assembly (7) includes a batching tank (71), a transmission motor (75) is installed in the middle of the upper end of the batching tank (71), and a liquid addition port (74) and a drug addition port (76) are respectively provided on both sides of the upper end of the batching tank (71) close to the transmission motor (75), the output end of the transmission motor (75) is fixedly connected to a stirring shaft (77), and the lower end of the stirring shaft (77) is located inside the batching tank (71) and is fixedly connected to a stirring blade (713).

6. The alfalfa buried drip irrigation field pipe network laying system according to claim 5, characterized in that: A plurality of guide strips (711) are evenly arranged at the bottom end of the interior of the mixing tank (71), and a bubble disk (710) is installed between two adjacent guide strips (711). The lower ends of all the bubble disks (710) are connected to an air pipe (78), and an air compressor (79) is installed at one end of the air pipe (78).

7. The alfalfa buried drip irrigation field pipe network laying system according to claim 5, characterized in that: A collecting cover (712) is provided inside the mixing tank (71) near the lower end of the stirring blade (713), and the rear side of the upper end of the collecting cover (712) is connected to the primary filter assembly (73) through the first liquid outlet pipe (714), and one side of the bottom end of the primary filter assembly (73) is connected to the secondary filter assembly (72) through the second liquid outlet pipe (715).

8. The alfalfa underground drip irrigation field pipe network laying system according to claim 7, characterized in that: The primary filter assembly (73) comprises a primary filter outer shell (731) and a primary filter cover (736) screw-engagedly mounted on the upper end of the primary filter outer shell (731); the inner side wall of the primary filter outer shell (731) is fixedly connected to a limiting ring (734); a filter cartridge (735) is provided on the inner side of the primary filter outer shell (731) and passes through the limiting ring (734); a liquid inlet (733) is provided on the outer side of the primary filter outer shell (731) at the upper end of the filter cartridge (735); and a liquid outlet (732) is provided at the bottom of the primary filter outer shell (731).

9. The alfalfa underground drip irrigation field pipe network laying system according to claim 7, characterized in that: The secondary filter assembly (72) comprises a secondary filter outer shell (721) and a secondary filter cover (725) screw-engagedly mounted on the upper end of the secondary filter outer shell (721); the inner side wall of the secondary filter outer shell (721) is fixedly connected to a second limiting ring (727); a filter core (724) is provided on the inner side of the secondary filter outer shell (721) and passes through the second limiting ring (727); a second liquid outlet (726) is provided on the outer side of the secondary filter outer shell (721) at the upper end of the filter core (724); and a second liquid inlet (723) is provided on the outer side of the secondary filter outer shell (721) at the lower end of the filter core (724); and a drain valve (722) is provided at the bottom of the secondary filter outer shell (721).

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