A kind of drip irrigation device for corn field secondary salinization improvement

Abstract

The utility model discloses a drip irrigation device for corn field secondary salinization improvement, including pre -buried pipe, the communication in the pre -buried pipe outer wall's leaching pipe, the regulation subassembly of screw connection in the pre -buried pipe inside, the fixed component of rotary connection in the regulation subassembly inside and the leaching hole of reservation on pre -buried pipe and set up in the filter screen of leaching hole side, regulation subassembly is used for adjusting the drip irrigation depth of corn field secondary salinization improvement, regulation subassembly is used for accurate control the drip irrigation depth of corn field secondary salinization improvement, fixed component is used for reliably fixed device in the operation process, leaching hole is used for the uniform seepage of leaching solution, and the filter screen and leaching hole cooperation can effectively prevent the soil particle reflux blockage, solved the traditional device only can wet the surface layer soil, cannot effectively leaching the salt of root system deep -layer enrichment, and because the strong surface evaporation effect promotes deep -layer salt with capillary water to gather to the surface soil, aggravates the problem of secondary salinization that restricts the sustainable development of agriculture.

Description

Technical Field

[0001] This utility model relates to the field of agricultural irrigation and soil improvement technology, specifically to a drip irrigation device for improving secondary salinization in cornfields. Background Technology

[0002] In major cotton-producing areas such as Xinjiang, the climate is arid and evaporation is intense. While drip irrigation under plastic film is highly efficient and saves water, it also leads to insufficient local salt leaching capacity and lack of drainage outlets. This causes salt to rise with the water and accumulate continuously on the soil surface and around the roots, triggering a vicious cycle of "salt coming with water and salt remaining when water goes away." This results in serious secondary salinization problems and directly threatens the sustainable production and ecological health of cornfields.

[0003] Existing drip irrigation systems generally suffer from a core defect: uncontrolled and inefficient leaching depth. Their water outlet is fixed at the surface or shallow layer, making it impossible to precisely control the water flow based on the dynamic distribution of salts in the soil profile. This results in irrigation water only wetting the upper part of the crop root zone. Not only is it unable to leach salts accumulated in the deeper soil layers down to below the root zone, but the strong surface evaporation also causes water to carry deep salts to migrate and accumulate in the topsoil, creating a vicious cycle of "salt coming with water, water dispersing and salt remaining." This ultimately exacerbates secondary soil salinization and severely restricts the sustainable development of cotton production. Summary of the Invention

[0004] In order to overcome the shortcomings of the existing technology, the purpose of this utility model is to provide a drip irrigation device for improving secondary salinization in corn fields. It solves the core problem that the existing drip irrigation system, due to its fixed and shallow rinsing depth, cannot effectively rinse out the deep salts in the root system, which instead leads to the accumulation of salts in the topsoil and aggravates secondary salinization.

[0005] The purpose of this utility model is achieved by the following technical solution: a drip irrigation device for improving secondary salinization in cornfields, including a pre-buried pipe, a rinsing pipe connected to the outer wall of the pre-buried pipe, an adjustment component threadedly connected to the inside of the pre-buried pipe, a fixing component rotatably connected to the inside of the adjustment component, a rinsing hole reserved on the pre-buried pipe, and a filter screen set on the side of the rinsing hole. The regulating component is used to precisely control the drip irrigation depth for secondary salinization improvement in maize fields; The fixing components are used to reliably secure the device during operation; The rinsing holes are used for the uniform seepage of rinsing fluid; The combination of the filter screen and the rinsing holes can effectively prevent soil particles from flowing back and clogging the system.

[0006] In one optional embodiment, the adjustment assembly includes a threaded rod threaded inside the pre-embedded pipe, a control handle fixedly connected to the top of the threaded rod, a plugging block fixedly connected to the bottom of the threaded rod, and a sealing sleeve fixedly connected to the outer wall of the plugging block.

[0007] In one alternative embodiment, a control handle is used to drive the threaded rod to rotate. When the threaded rod rotates, it moves up and down inside the pre-embedded pipe with the blocking block in it. The threaded rod and the pre-embedded pipe are connected by threads.

[0008] In one alternative embodiment, the outer diameter of the plugging block matches the inner diameter of the pre-embedded pipe, and a sealing sleeve is used to seal the plugging block and the pre-embedded pipe.

[0009] In one optional embodiment, the fixing assembly includes a rotating rod rotatably connected inside the threaded rod, a rotating handle fixedly connected to the top of the rotating rod, a gear engaged with the bottom of the rotating rod, a fixing seat fixedly connected to the bottom of the gear, and a ground plug meshing with the side of the gear. The fixing seat is movably connected to the bottom side of the pre-embedded pipe.

[0010] In one optional embodiment, a cube-shaped locking block is provided at the bottom of the rotating rod, and a corresponding locking groove is provided on the gear. When the rotating rod is engaged with the gear, the rotating handle is used to control the rotation of the rotating rod and the gear. When the gear rotates, it controls the ground insertion to extend or retract the pre-embedded pipe.

[0011] In one alternative implementation, two ground plugs are provided, both of which mesh with gears, and their ends are tapered.

[0012] In one optional embodiment, the shape of the rinsing holes is set to be conical, with the larger opening facing outward and the smaller opening facing inward, and the rinsing holes are spirally linearly distributed on the pre-embedded pipe.

[0013] In one alternative embodiment, the bottom of the embedded pipe is tapered, and the outer wall of the embedded pipe is threaded.

[0014] Compared with the prior art, the beneficial effects of this utility model are as follows: 1. This device constructs an underground water conveyance channel through a pre-embedded pipe. Operators can precisely control the vertical displacement of the blockage block within the pipe by rotating a threaded rod. When the rinsing fluid is injected into the pre-embedded pipe, the positioning of the blockage block determines the release depth of the rinsing fluid. During dynamic operation, the sealing sleeve maintains a seal between the blockage block and the inner wall of the pre-embedded pipe. This design effectively prevents cross-contamination of water flows from different soil layers, ensuring that the rinsing fluid flows out completely from the outlet at the set depth, achieving precise stratified rinsing control. The entire system, through this mechanical sealing method, ensures reliability and stability during long-term use.

[0015] 2. This device innovatively introduces a mechanical anchoring system, the core of which consists of a rotating rod, gears, and a ground anchor. When the rotating rod and gears are engaged, the operator can precisely convert the rotational motion into the directional rotation of the gears by rotating the handle. This rotation is further converted into the vertical translational motion of the ground anchor through a unique transmission mechanism, allowing it to stably drill into the deep soil. This mechanical linkage system effectively enhances the overall stability of the device during the rinsing operation, especially preventing the device from floating or shifting under high-pressure water injection conditions, ensuring precise control of the rinsing depth and operational reliability.

[0016] 3. The device employs a unique conical structure in its washout orifice design, which allows it to work precisely with the high-performance filter. This conical orifice design not only significantly increases the water flow rate and enhances the penetration of the wash solution into compacted soil, but more importantly, its gradually expanding structure effectively prevents soil particles from clogging the system during recharge. The filter can intercept soil particles and root impurities from entering the device without significantly affecting water flow. The synergistic work of the two ensures the smooth operation and reliability of the washout system during long-term use, fundamentally solving the technical problems of easy clogging and frequent maintenance in traditional drip irrigation devices. Attached Figure Description

[0017] Figure 1 This is a three-dimensional view of the entire device from the side. Figure 2 This is a three-dimensional view of the entire device from below. Figure 3 This is a structural diagram of the device's adjusting and fixing components; Figure 4 This is a structural schematic diagram of the threaded rod and the plugging block. Figure 5 This is a schematic diagram of the gear and ground insertion components. Figure 6 This is a schematic diagram of the shower pipe and filter screen.

[0018] In the diagram: 1. Embedded pipe; 2. Shower pipe; 3. Threaded rod; 4. Control handle; 5. Blocking block; 6. Sealing sleeve; 7. Rotating rod; 8. Rotating handle; 9. Gear; 10. Fixing base; 11. Ground plug; 12. Shower hole; 13. Filter screen. Detailed Implementation

[0019] The present invention will now be further described in conjunction with the accompanying drawings and specific embodiments. It should be noted that, without conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments. Unless otherwise specified, the materials and equipment used in this embodiment are all commercially available. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this application, and should not be construed as limiting this application.

[0020] like Figure 1 , Figure 2 and Figure 6 As shown, a drip irrigation device for improving secondary salinization in cornfields includes a pre-buried pipe 1, a rinsing pipe 2 connected to the outer wall of the pre-buried pipe 1, an adjustment component threadedly connected inside the pre-buried pipe 1, a fixing component rotatably connected inside the adjustment component, rinsing holes 12 pre-installed on the pre-buried pipe 1, and filter screens 13 disposed on the sides of the rinsing holes 12. The adjustment component achieves stepless adjustment of the drip irrigation depth through a precise threaded transmission mechanism. The fixing component adopts a deployable anchoring structure to provide reliable anti-floating protection after the device is in place. The rinsing holes 12, with their unique conical structure, achieve concentrated spraying of the rinsing liquid; their outward-facing design forms a natural anti-clogging structure. The filter screen 13, made of multi-layer composite material, forms a three-dimensional filtration system with the conical rinsing holes 12, effectively blocking soil particles while maintaining optimal flux. These rinsing holes 12 are spirally and linearly distributed on the surface of the pre-buried pipe 1, forming a multi-level rinsing band that can achieve different depths. The layered treatment utilizes the precise combination of the conical hole structure and the high-performance filter 13. This not only enhances the flow rate and penetration into compacted soil through the Venturi effect, but its gradually expanding flow channel also guides the water flow to form turbulence, effectively preventing particulate matter deposition and clogging. The innovative weaving process of the filter 13 allows it to maintain a low flow resistance coefficient while intercepting fine soil particles and root impurities. The synergistic effect of the two ensures the stability and durability of the rinsing system in long-term use, fundamentally overcoming the technical bottlenecks of easy clogging and frequent maintenance of traditional drip irrigation devices. In addition, the conical design at the bottom of the pre-buried pipe 1, coupled with the special threaded structure of the pipe wall, reduces installation resistance and enhances the coupling effect with the surrounding soil. The threaded channels also create an advantageous flow path to promote the radial diffusion of water. These features, combined with the precise control of the regulating components, form a complete three-dimensional rinsing system, achieving efficient and comprehensive treatment of secondary salinization in cornfields.

[0021] like Figures 1 to 4As shown, the adjustment assembly includes a threaded rod 3 threaded inside the pre-embedded pipe 1, a control handle 4 fixedly connected to the top of the threaded rod 3, a plug 5 fixedly connected to the bottom of the threaded rod 3, and a sealing sleeve 6 fixedly connected to the outer wall of the plug 5. The control handle 4 features an anti-slip design to provide sufficient torque to drive the threaded rod 3 to rotate. When the threaded rod 3 rotates, it drives the plug 5 to achieve smooth lifting and lowering within the pre-embedded pipe 1 through precise threaded transmission. The threaded rod 3 and the pre-embedded pipe 1 are connected by a high-precision thread to ensure transmission accuracy. The outer diameter of the plug 5 is precision-machined to maintain optimal clearance with the inner diameter of the pre-embedded pipe 1. The sealing sleeve 6 is made of corrosion-resistant elastic material and uses a special lip-shaped sealing structure to effectively ensure a dynamic sealing effect between the plug 5 and the inner wall of the pre-embedded pipe 1. A reliable underground water conveyance channel is constructed through the pre-buried pipe 1. Operators can precisely control the vertical displacement of the blocking block 5 in the pipe by rotating the threaded rod 3. When the rinsing fluid is injected into the pre-buried pipe 1, the precise positioning of the blocking block 5 determines the release depth of the rinsing fluid in the soil profile. During dynamic operation, the sealing sleeve 6 always maintains a multi-layered sealing state between the blocking block 5 and the inner wall of the pre-buried pipe 1. This innovative sealing design can effectively prevent cross-contamination and pressure leakage of water flow from different soil layers, ensuring that the rinsing fluid flows out evenly from the outlet at the set depth, achieving precise layered rinsing control and efficient salt rinsing effect. The entire system ensures stability and durability during long-term use through this reliable mechanical sealing method, while greatly reducing maintenance requirements and operating costs.

[0022] Another alternative embodiment based on the design of the blocking block 5: The blocking block 5 can be an airbag sealing block, which consists of a rigid base, an annular main sealing airbag, and an axial auxiliary airbag. Each airbag is equipped with an independent control valve and a pressure sensor, and is connected to an air pump and controller located at the top of the pre-embedded pipe 1. The rigid base is threadedly installed at the bottom of the threaded rod 3. During operation, the main sealing airbag inflates first to achieve a basic seal with the inner wall of the pre-embedded pipe 1. The auxiliary airbag dynamically adjusts its pressure based on sensor feedback: increasing pressure in the high-pressure zone enhances the seal, and decreasing pressure in the low-pressure zone reduces wear, achieving a three-dimensional adaptive dynamic seal. After rinsing, the airbags sequentially release air to release the seal. This design eliminates sealing dead zones through zoned pressure control, improves sealing reliability and service life, enhances the adaptability of the device through flexible air pressure sealing, reduces the requirements for the machining accuracy of the threaded rod 3, and the modular airbag structure makes maintenance simple, effectively extending the service life of the device. like Figure 1 , Figure 3 and Figure 5As shown, the fixing assembly includes a rotating rod 7 rotatably connected inside the threaded rod 3, a rotating handle 8 fixedly connected to the top of the rotating rod 7, a gear 9 engaging with the bottom of the rotating rod 7, a fixing seat 10 fixedly connected to the bottom of the gear 9, and a ground plug 11 meshing with the side of the gear 9. The fixing seat 10 is movably connected to the bottom of the pre-embedded pipe 1 via a precision bearing to ensure smooth transmission. The bottom of the rotating rod 7 is provided with a specially heat-treated cubic locking block. The gear 9 has corresponding high-precision slots for reliable power transmission. When the rotating rod 7 and gear 9 are connected via the engaging mechanism, the rotating handle 8 provides sufficient torque to control the synchronous rotation of the rotating rod 7 and gear 9. When the gear 9 rotates, the precise tooth profile design controls the synchronous translational movement of the two symmetrically arranged ground plugs 11, allowing the ground plugs 11 to smoothly extend or retract from the pre-embedded pipe 1. Both ground plugs 11 are made of high-strength alloy material and form a perfect connection with the gear 9. The device features a meshing relationship and a tapered structure at its end processed with a special heat treatment process to ensure smooth drilling under various soil conditions. It innovatively introduces a mechanical anchoring system, the core of which consists of a rotating rod 7, a gear 9, and a ground insert 11 forming a precision transmission chain. When the rotating rod 7 and gear 9 are fully engaged through the locking blocks and slots, the operator can precisely convert manual input into the directional rotation of gear 9 by rotating the handle 8. This rotation is further converted into the translational movement of the ground insert 11 through a unique gear 9 rack and pinion transmission mechanism, enabling it to stably and deeply drill into the soil anchoring layer. This mechanical linkage system, through its optimized transmission ratio design, effectively enhances the overall stability of the device during the rinsing operation, especially under high-pressure water injection conditions, effectively resisting buoyancy and lateral displacement, ensuring precise control of rinsing depth and operational reliability. Simultaneously, the entire anchoring system has a self-locking function, automatically maintaining its position after reaching the predetermined depth.

[0023] Another alternative embodiment based on the design of the ground anchor 11: The ground anchor 11 can be a spiral anchor rod, which consists of an anchor rod body, spiral blades, and a connector. The spiral blades are welded to the surface of the anchor rod body to form a continuous spiral structure. The connector is provided with a transmission tooth groove that meshes with the gear 9. A self-drilling drill bit is machined at the bottom of the anchor rod body. During operation, the gear 9 is driven to rotate by turning the handle 8, which drives the spiral anchor rod to perform spiral drilling motion. The drill bit first cuts into the soil layer, and the spiral blades continuously cut and transport soil chips, forming the anchor hole wall. At the same time, the mechanical interlocking between the blades and the soil provides pull-out resistance. This design achieves rapid anchoring through the spiral drilling principle. The blade structure greatly increases the anchoring contact area, providing stronger pull-out resistance and displacement resistance. The self-drilling drill bit reduces the anchoring operation resistance, adapts to various soil conditions, and the integral structure has higher reliability and service life, effectively improving the stability of the device under high-pressure rinsing conditions.

[0024] Working principle: The pre-buried pipe 1 is screwed into the soil of the cornfield to be improved through its external threads. Then, rotating the handle 8 changes the direction of the bottom locking block, aligning it with the direction of the groove on the top of the gear 9. At this point, the rotating rod 7 will feel noticeably sink. When the rotating rod 7 engages with the gear 9, rotating the handle 8 will cause the rotating rod 7 to rotate synchronously with the gear 9, thus controlling the translational movement of the ground insert 11, allowing it to extend out of the pre-buried pipe 1 and insert into the soil. Before sowing, rotating the control handle 4 so that the threaded rod 3, with the blocking block 5, is at its lowest position. At this point, leaching solution is added from the leaching pipe 2 for leaching. The process thoroughly leaches the accumulated salt on the surface down to the root zone, creating a low-salt environment for seed germination. During the seedling stage, the blocking block 5 is positioned in the middle of the main root zone of the cotton plant. Leaching is performed here to maintain the salt balance in the active root zone and prevent salt stress from affecting seedling growth. During the flowering and boll-forming stage, the position of the blocking block 5 is dynamically adjusted based on salt monitoring data to keep the salt below the main absorbing root zone of the cotton plant, ensuring water supply while avoiding salt damage. After harvest, the blocking block 5 is repositioned at the bottom of the pre-buried pipe 1 for large-volume leaching. The leaching solution flows out through the leaching hole 12 via the filter screen 13. In this way, secondary salinization of the cornfield is improved through leaching.

[0025] Finally, it should be noted that the above embodiments are only preferred embodiments of this utility model and should not be used to limit the scope of protection of this utility model. Any non-substantial changes and substitutions made by those skilled in the art based on this utility model shall fall within the scope of protection claimed by this utility model.

Claims

1. A drip irrigation device for improving secondary salinization in cornfields, characterized in that: It includes a pre-embedded pipe (1), a rinsing pipe (2) connected to the outer wall of the pre-embedded pipe (1), an adjustment component threaded inside the pre-embedded pipe (1), a fixing component rotatably connected inside the adjustment component, a rinsing hole (12) reserved on the pre-embedded pipe (1), and a filter screen (13) set on the side of the rinsing hole (12). The regulating component is used to precisely control the drip irrigation depth for secondary salinization improvement in maize fields; The fixing components are used to reliably secure the device during operation; The rinsing hole (12) is used for the uniform seepage of rinsing fluid; The combination of the filter screen (13) and the rinsing hole (12) can effectively prevent soil particles from flowing back and clogging.

2. The drip irrigation device for improving secondary salinization in cornfields according to claim 1, characterized in that, The adjustment assembly includes a threaded rod (3) threaded inside the pre-embedded pipe (1), a control handle (4) fixedly connected to the top of the threaded rod (3), a plug (5) fixedly connected to the bottom of the threaded rod (3), and a sealing sleeve (6) fixedly connected to the outer wall of the plug (5).

3. A drip irrigation device for improving secondary salinization in cornfields according to claim 2, characterized in that, The control handle (4) is used to drive the threaded rod (3) to rotate. When the threaded rod (3) rotates, it moves up and down inside the pre-embedded pipe (1) with the blocking block (5). The threaded rod (3) and the pre-embedded pipe (1) are connected by threads.

4. A drip irrigation device for improving secondary salinization in cornfields according to claim 3, characterized in that, The outer diameter of the plug (5) is consistent with the inner diameter of the pre-embedded pipe (1), and the sealing sleeve (6) is used to seal the plug (5) and the pre-embedded pipe (1).

5. A drip irrigation device for improving secondary salinization in cornfields according to claim 1, characterized in that, The fixing assembly includes a rotating rod (7) rotatably connected inside the threaded rod (3), a rotating handle (8) fixedly connected to the top of the rotating rod (7), a gear (9) engaging with the bottom of the rotating rod (7), a fixing seat (10) fixedly connected to the bottom of the gear (9), and a ground plug (11) meshing with the side of the gear (9). The fixing seat (10) is movably connected to the bottom side of the pre-embedded pipe (1).

6. A drip irrigation device for improving secondary salinization in cornfields according to claim 5, characterized in that, A cube-shaped locking block is provided at the bottom of the rotating rod (7), and a corresponding slot is provided on the gear (9). When the rotating rod (7) engages with the gear (9), the rotating handle (8) is used to control the rotation of the rotating rod (7) and the gear (9). When the gear (9) rotates, it controls the ground plug (11) to extend or retract the pre-embedded pipe (1).

7. A drip irrigation device for improving secondary salinization in cornfields according to claim 5, characterized in that, There are two ground plugs (11), both of which mesh with gears (9), and their ends are tapered.

8. A drip irrigation device for improving secondary salinization in cornfields according to claim 1, characterized in that, The shape of the rinsing hole (12) is set as a cone, with the large opening facing outward and the small opening facing inward. The rinsing hole (12) is spirally distributed on the pre-embedded pipe (1).

9. A drip irrigation device for improving secondary salinization in cornfields according to claim 1, characterized in that, The bottom of the pre-embedded pipe (1) is set to be tapered, and the outer wall of the pre-embedded pipe (1) is provided with threads.

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