Water and fertilizer integrated drip irrigation device for deep sowing wheat

Abstract

The present application relates to the technical field of wheat drip irrigation, in particular to a water and fertilizer integrated drip irrigation device for deep-seeded wheat, which comprises a support frame and an upper and lower movable outer sleeve, a sand scraping mechanism is arranged on the outer sleeve, the sand scraping mechanism comprises movable covers that can move away from each other, and the movable covers are used for horizontally moving to scrape off the sand layer on the surface of the drip irrigation area; a fixed pipe is fixedly connected to the inner wall of the outer sleeve through a fixed shaft, the fixed pipe can move up and down together with the outer sleeve, before drip irrigation, in the process of downward movement of the outer sleeve, the two movable covers are separated from each other, the sand layer above the soil of the drip irrigation area is scraped off, then the bottom of the drain pipe penetrates into the soil, and a gap is formed on the surface of the soil, the water and fertilizer are drip irrigated through the drain pipe, the sand layer on the surface of the soil is avoided, at this time, the water and fertilizer cannot be consumed by the sand layer, and part of the water and fertilizer can enter the soil through the soil gap, so that the surface evaporation and runoff loss can be significantly reduced, and the water and fertilizer utilization efficiency can be improved.

Description

Technical Field

[0001] This invention relates to the manufacture of mechanized agricultural machinery, and more particularly to the field of wheat drip irrigation technology, specifically a water and fertilizer integrated drip irrigation device for deep-sown wheat. Background Technology

[0002] Kashgar region has an arid climate and a severe shortage of irrigation water. It is also adjacent to the Taklamakan Desert, and the topsoil is rich in sand, which has a very poor water and fertilizer retention capacity. In order to ensure wheat germination and growth, it is necessary to sow the seeds deep into the soil to make effective use of the limited water, avoid placing the seeds in the dry sand layer, ensure germination and seedling establishment and root development, and resist the damage of surface drought and wind erosion. In order to improve water use efficiency, drip irrigation is usually used when watering and fertilizing.

[0003] In the prior art, such as the drip irrigation device for agricultural soil fertilization proposed in patent application number "CN202420352381.9", a drip irrigation vehicle frame, a vertical plate, rollers, a first rotating shaft, a drip irrigation adjustment component, a liquid storage tank and a stirring component are included. This utility model adopts a drip irrigation adjustment component, which can adjust the drip irrigation angle during the movement of the drip irrigation equipment, thereby increasing the drip irrigation range and improving the drip irrigation effect.

[0004] Traditional surface drip irrigation technology faces a core technical bottleneck of "leakage from the surface and evaporation from the bottom" when applied to the sandy soil region of Kashgar. After irrigation water and fertilizer are applied to the surface, they first encounter the sand layer, where water is consumed and ineffectively leached away. The water and fertilizer retained on the surface are then rapidly evaporated due to the extreme drought and high evaporation rates of the local climate. As a result, the actual effective water and fertilizer supply to the wheat rhizosphere is severely insufficient. Existing technologies cannot achieve precise targeted delivery of water and fertilizer, necessitating the development of technologies that can bypass sand layer interference and guide water and fertilizer into the soil for irrigation. Summary of the Invention

[0005] The purpose of this invention is to provide a drip irrigation device for deep-sown wheat that integrates water and fertilizer, so as to solve the problems mentioned in the background art.

[0006] The objective of this invention can be achieved through the following technical solutions:

[0007] A water and fertilizer integrated drip irrigation device for deep-sown wheat includes a support frame and an upper and lower movable outer tube. The outer tube is equipped with a sand scraping mechanism, which includes movable covers that can move away from each other. The movable covers are used to horizontally scrape away the sand layer on the surface of the area to be drip-irrigated.

[0008] A fixed pipe is fixedly connected to the inner wall of the outer sleeve via a fixed shaft. The fixed pipe can move up and down with the outer sleeve. A supply component is installed inside the fixed pipe. The supply component is used for quantitative delivery and discharge of water and fertilizer. The supply component includes:

[0009] The movable plug is slidably installed inside the fixed tube, and a receiving cavity for quantitatively containing water and fertilizer is opened on one side;

[0010] The drain pipe is fixed to the bottom of the outer casing, and its bottom is equipped with a soil-breaking tip for drilling into the soil.

[0011] The drain piston is fixed to the bottom of the movable plug via a vertical shaft and is located inside the drain pipe.

[0012] Preferably, the supply assembly includes drainage holes formed around the bottom of the fixed tube, and the top of the drainage piston is located inside the fixed tube to close the drainage holes;

[0013] A sealing head is fixedly connected to the top of the fixed pipe, and a drain outlet is formed between the top of the sealing head and the top of the outer pipe, which is used to guide the water and fertilizer discharged from the receiving cavity into the space between the outer pipe and the fixed pipe.

[0014] A water and fertilizer input pipe is fixed on the fixed pipe, one end of which extends to the outside of the outer sleeve, and the other end is connected to the receiving cavity;

[0015] When the outer tube moves downward, the fixed tube moves downward as well, while the movable plug remains stationary. This causes the movable plug to move upward relative to the fixed tube, allowing the water and fertilizer in the receiving cavity to flow into the bottom of the outer tube from the drain outlet. Simultaneously, the bottom of the drain pipe drills into the soil, causing the drain piston to move upward relative to the drain pipe and open the drain hole. The water and fertilizer are then precisely delivered to the soil surface through the guidance of the drain pipe. Furthermore, the water and fertilizer flow into the soil through the gaps formed by the soil-breaking tip that drills into the soil, preventing water and fertilizer from overflowing on the soil surface and causing losses.

[0016] Preferably, the sand-scraping mechanism further includes a fixed ring, a spring, a movable ring, and a push rod; the fixed ring is fixed to the outer surface of the outer sleeve; the movable ring is sleeved on the outer surface of the outer sleeve, and the two ends of the spring are fixed to the movable ring and the fixed ring respectively; push rods are rotatably connected to both sides of the movable ring, and the other end of the push rod is rotatably connected to the movable cover; the two movable covers are arranged opposite to each other, and the bottom of each cover is provided with a sand-scraping part;

[0017] A fixed rod is fixedly connected to one side of the push rod, and a guide rod is fixedly connected to one end of the fixed rod; a height-adjustable mating shaft is provided below the guide rod.

[0018] Preferably, a vertical hanger is fixedly connected to the top of the movable plug. The top of the vertical hanger passes through the connecting top pipe set at the top of the outer sleeve and is fixedly connected to the support frame to ensure that the movable plug and the drain piston do not move down with the fixed pipe.

[0019] Preferably, the inner wall of the connecting jacking pipe is provided with an expansion slot, the inner radius of which is larger than the radius of the movable plug, providing space for the movable plug to move upward.

[0020] Preferably, the bottom of the drain piston is made of metal, and its radius is slightly smaller than that of the main body of the drain piston, so as to push out the soil attached to the inside of the drain pipe when the drain pipe moves upward.

[0021] Preferably, the support frame is provided with a support mechanism, which is used to drive the outer sleeve to move up and down. The support mechanism includes a fixed cylinder, a fixed column, a horizontal connecting rod, a vertical connecting rod, a first fixed sleeve and a second fixed sleeve.

[0022] The fixed cylinder is fixedly installed on the support frame, and its telescopic end is fixed to the fixed column; the fixed column is fixed to the first fixed sleeve through a horizontal connecting rod; the horizontal connecting rod is fixed to the second fixed sleeve through a vertical connecting rod; the second fixed sleeve is fixed to the surface of the outer sleeve, and the first fixed sleeve is fixed to the outer surface of the connecting top pipe.

[0023] Preferably, the bottom of the support frame is provided with an adjustment mechanism for adjusting the height of the mating shaft. The adjustment mechanism includes a U-shaped rod, a protruding plate, a first locking nut, a second locking nut, a connecting plate, and the mating shaft.

[0024] The U-shaped rod is fixed to the bottom of the support frame; the first locking nut and the second locking nut are threaded onto the U-shaped rod and located above and below the protruding plate, respectively, for adjusting and fixing the height of the protruding plate; the protruding plate is fixedly connected to the mating shaft through a connecting plate.

[0025] Preferably, a guide rod is fixed to the inner wall of one of the movable covers, and a guide tube is fixed to the inner wall of the other movable cover. The guide rod passes through the guide tube to guide the two movable covers to move horizontally.

[0026] The beneficial effects of this invention are:

[0027] When applied to drip irrigation of wheat after sowing in the Kashgar region, this application allows the two movable covers to separate during the downward movement of the outer casing before drip irrigation. After scraping away the sand layer on the soil surface in the drip irrigation area, the drain pipe drills into the soil from the bottom, forming gaps on the soil surface. Fertilizer and water are then dripped through the drain pipe, avoiding the sand layer on the soil surface. At this time, the water and fertilizer will not be consumed by the sand layer, and some water and fertilizer can enter the soil through the soil gaps. This can significantly reduce surface evaporation and runoff loss, improve water and fertilizer use efficiency, and avoid wasting water resources.

[0028] 2. When this application is used for drip irrigation of wheat after sowing in the Kashgar region, the bottom of the drain pipe is drilled into the soil and forms a drainage channel with the outer casing. During drip irrigation, water and fertilizer can flow directly into the soil from the channel formed by the outer casing and the drain pipe, avoiding water and fertilizer being blown away by strong winds and wasting water and fertilizer. It also prevents uneven distribution of water and nutrients in the soil, which would affect the uniformity of wheat emergence and the balanced development of the root system, ultimately leading to reduced yield. At the same time, after the drain pipe is detached from the soil, the bottom of the drain piston will push out the soil attached to the inside of the drain pipe, preventing soil from adhering to the inside of the drain pipe.

[0029] Third, in the drip irrigation process of this application, the water and fertilizer first enter the receiving cavity. As the movable plug moves upward relative to the outer tube, the water and fertilizer inside the receiving cavity enter the outer tube, ensuring that the same volume of water and fertilizer can be input each time. Quantitative drip irrigation of water and fertilizer can be achieved without additional electronic equipment. At the same time, due to the sealing of the drain hole by the drain piston, the water and fertilizer entering the outer tube will not flow out immediately through the drain pipe. Instead, as the drain pipe continues to move downward and penetrate into the soil, the drain piston moves upward relative to the drain pipe and then releases the water and fertilizer through the drain hole. This allows the drain pipe to restrict the flow of water and fertilizer along the soil surface, reducing runoff loss and ensuring efficient nutrient absorption, thus significantly improving water and fertilizer utilization efficiency.

[0030] Fourth, when the drip irrigation system is completed and the drainage pipe is moved upwards, the bottom of the pipe can be directly detached from the soil. This allows for the formation of gaps on the ground to guide water and fertilizer into the soil without the need for digging or backfilling. The water- and fertilizer-soaked soil becomes softer and more malleable. After a period of time, the gaps formed by the water- and fertilizer-soaked soil will naturally close due to the pressure between the soil particles. This prevents the lower soil layer from being turned to the surface during digging and backfilling, which would cause the original moisture in the lower soil layer to be lost quickly, or the sand layer on the soil surface to be filled into the soil, thus affecting the growth of wheat. Attached Figure Description

[0031] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, for those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0032] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0033] Figure 2 This is the present invention. Figure 1 Schematic diagram of the bottom structure of the inner and outer jacket;

[0034] Figure 3 This is the present invention. Figure 1 Side view of the inner and outer jacket;

[0035] Figure 4 This is the present invention. Figure 1 A schematic diagram of the structure of the central active cover section;

[0036] Figure 5 This is the present invention. Figure 3 A schematic diagram of the structure of the adjustment mechanism;

[0037] Figure 6 This is the present invention. Figure 5 Schematic diagram of the structure at the bottom of the U-shaped rod;

[0038] Figure 7 This is the present invention. Figure 1 Cross-sectional view of the inner and outer sleeve sections;

[0039] Figure 8 This is the present invention. Figure 7 A schematic diagram of the drainage pipe section.

[0040] The attached figures are labeled as follows:

[0041] 1. Support frame; 201. Fixed ring; 202. Spring; 203. Movable ring; 204. Push rod; 2041. Fixed rod; 2042. Guide diagonal rod; 205. Movable cover; 2051. Sand scraping part; 3. Outer sleeve; 301. Connecting top pipe; 302. Drainage pipe; 401. U-shaped rod; 402. Protruding plate; 403. First locking nut; 404. Second locking nut; 405. Connecting plate; 406. Mating shaft; 501. Fixing Cylinder; 502, Fixed column; 503, Horizontal connecting rod; 504, Vertical connecting rod; 505, First fixed sleeve; 506, Second fixed sleeve; 7, Fixed tube; 701, Movable plug; 702, Receiving cavity; 703, Sealing head; 704, Drain outlet; 705, Vertical lifting rod; 706, Vertical shaft; 707, Drain piston; 708, Drain hole; 8, Fixed shaft; 9, Water and fertilizer input pipe; 10, Guide rod; 11, Guide tube; 12, Expansion slot. Detailed Implementation

[0042] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0043] like Figure 1A water and fertilizer integrated drip irrigation device for deep-sown wheat, mainly used for drip irrigation of deep-sown wheat in Kashgar region, includes a support frame 1, a sand scraping mechanism, an upper and lower movable outer sleeve 3, an adjustment mechanism, a support mechanism and a supply component.

[0044] The support frame 1 provides support for the entire device and is fixed to the external work vehicle. It can be fixed by drilling holes in the support frame 1 and using bolts, or it can be directly welded to the external work vehicle.

[0045] The sand-scraping mechanism includes a fixed ring 201, a spring 202, a movable ring 203, a push rod 204, and a movable cover 205. The fixed ring 201 is fixed to the outer surface of the outer sleeve 3, and the movable ring 203 and the spring 202 are sleeved on the outer surface of the outer sleeve 3. The two ends of the spring 202 are fixed to the movable ring 203 and the fixed ring 201 respectively, and have an upward pulling force on the movable ring 203.

[0046] Both sides of the movable ring 203 are rotatably connected to push rods 204. The other end of the push rods 204 is rotatably connected to the movable cover 205. There is an indentation between the two movable covers 205. Under the action of the spring 202 pulling the movable ring 203 upward, the two movable covers 205 are pulled by the two push rods 204, and the two movable covers 205 are pressed together.

[0047] A fixed rod 2041 is fixedly connected to one side of the push rod 204, and a guide rod 2042 is fixedly connected to one end of the fixed rod 2041. Two guide rods 2042 are provided, each parallel to one of the two push rods 204. Two height-adjustable mating shafts 406 are provided below the guide rods 2042, located below the bottom of the guide rods 2042 (e.g., [missing information]). Figure 1 and Figure 2 );

[0048] Before drip irrigation of water and fertilizer into the wheat sowing area, as the outer sleeve 3 moves down, the sand scraping mechanism moves down simultaneously. The sand scraping part 2051 at the bottom of the movable cover 205 eventually passes through the sand layer. The guide rod 2042 moves down with the push rod 204 and comes into contact with the mating shaft 406. The mating shaft 406 relatively squeezes the guide rod 2042. The guide rod 2042 drives the push rod 204 to move through the fixed rod 2041, causing the push rod 204 to rotate. This causes the two movable covers 205 to separate from each other, and the sand scraping parts 2051 at the bottom of the movable covers 205 to separate from each other, scraping away the sand layer on the soil surface at the location where water and fertilizer need to be applied.

[0049] After drip irrigation and fertilization of the wheat seed sowing area, the outer sleeve 3 moves upward, which drives the sand scraping mechanism to move upward. Under the pull of the spring 202, the movable ring 203 moves upward. The movable ring 203 pulls the movable cover 205 through the push rod 204, so that the two movable covers 205 approach each other and come into contact.

[0050] like Figure 3 The support mechanism includes a fixed cylinder 501, a fixed column 502, a horizontal connecting rod 503, a vertical connecting rod 504, a first fixed sleeve 505, and a second fixed sleeve 506.

[0051] The fixed cylinder 501 is fixedly installed on the support frame 1. The fixed column 502 is fixed by the horizontal connecting rod 503 and the first fixed sleeve 505. The horizontal connecting rod 503 is fixed by the vertical connecting rod 504 and the second fixed sleeve 506. The fixed column 502 is fixed to the telescopic end of the fixed cylinder 501. When the fixed cylinder 501 telescopically drives the fixed column 502 to move up and down, the fixed column 502 drives the first fixed sleeve 505 and the second fixed sleeve 506 to move up and down. The second fixed sleeve 506 is fixed to the surface of the outer sleeve 3 and can drive the outer sleeve 3 to move up and down.

[0052] like Figure 4 One of the movable covers 205 has a guide rod 10 fixed on one side of its inner wall, and the other movable cover 205 has a guide tube 11 fixed on the top of its inner wall. The guide rod 10 passes through the guide tube 11 to ensure horizontal movement when the two movable covers 205 are separated.

[0053] like Figure 5 and Figure 6 The bottom of the support frame 1 is provided with an adjustment mechanism, which includes a U-shaped rod 401, a protruding plate 402, a first locking nut 403, a second locking nut 404, a connecting plate 405, and a mating shaft 406.

[0054] The U-shaped rod 401 is fixed to the bottom of the support frame 1. Both vertical ends of the U-shaped rod 401 are threaded and pass through the protruding plate 402. The first locking nut 403 and the second locking nut 404 are threadedly connected to the U-shaped rod 401 above and below the protruding plate 402, respectively, to fix the protruding plate 402. The threads on the two vertical ends are in opposite directions to prevent loosening. The height of the protruding plate 402 can be adjusted by adjusting the position of the first locking nut 403 and the second locking nut 404. The protruding plate 402 is fixedly connected to the connecting plate 405, and the connecting plate 405 is fixedly connected to the mating shaft 406, thereby adjusting the height of the mating shaft 406 to adapt to the different heights of the work vehicle body.

[0055] like Figure 7 The outer tube 3 has a fixed tube 7 inside. A fixed shaft 8 is fixedly connected between the outer surface of the fixed tube 7 and the inner wall of the outer tube 3. The fixed tube 7 is fixed to the outer tube 3 through the fixed shaft 8, so that the fixed tube 7 can move up and down together with the outer tube 3.

[0056] like Figure 7The fixed pipe 7 is equipped with a supply component, which includes a movable plug 701. The movable plug 701 is located inside the fixed pipe 7. The movable plug 701 is made of metal inside and wear-resistant rubber outside to ensure a movable seal between the movable plug 701 and the fixed pipe 7. A receiving cavity 702 is opened on one side of the movable plug 701. A water and fertilizer input pipe 9 is fixedly connected to the fixed pipe 7. One end of the water and fertilizer input pipe 9 extends to the outside of the outer sleeve 3. An external water and fertilizer mixing device (installed on an external work vehicle, which uses a pump as a drive to mix water and fertilizer and then transport it) mixes water and fertilizer and connects it to the water and fertilizer input pipe 9 through a hose. The water and fertilizer input pipe 9 and the receiving cavity 702 are at the same height, which allows water and fertilizer to be input into the receiving cavity 702.

[0057] like Figure 1 and Figure 7 A sealing head 703 is fixedly connected to the top of the fixed pipe 7. The sealing head 703 is made of wear-resistant rubber material. The top of the sealing head 703 is flush with the top of the movable plug 701. The top of the sealing head 703 is not connected to the top of the outer sleeve 3, forming a drain outlet 704. A connecting top pipe 301 is fixedly connected to the top of the outer sleeve 3. A vertical hanger 705 is fixedly connected to the top of the movable plug 701. The top of the vertical hanger 705 passes through the connecting top pipe 301 and is fixedly connected to the support frame 1. The first fixed sleeve 505 is fixed to the outer surface of the connecting top pipe 301 and can drive the connecting top pipe 301 to move up and down.

[0058] After the water and fertilizer are mixed, they will be introduced into the receiving cavity 702 through the water and fertilizer input pipe 9 and fill the receiving cavity 702. When the outer tube 3 moves down, the fixed tube 7 moves down with it. Since the top of the vertical hanger 705 is fixed to the support frame 1, the vertical hanger 705 and the movable plug 701 will not move down. The movable plug 701 moves up relative to the fixed tube 7. The movable plug 701 passes through the sealing head 703. The water and fertilizer in the receiving cavity 702 will be discharged through the drain port 704 and flow into the space formed by the outer tube 3 and the fixed tube 7.

[0059] An expansion slot 12 is provided on the inner wall of the connecting jacking pipe 301. The inner radius of the expansion slot 12 is larger than the radius of the movable plug 701. When the movable plug 701 moves upward, it will move into the expansion slot 12, so that the inner wall of the connecting jacking pipe 301 will not cause wear to the movable plug 701, thus improving the service life of the movable plug 701.

[0060] The bottom of the outer sleeve 3 is fixedly connected to a drain pipe 302. The bottom of the drain pipe 302 is located between two movable covers 205. The bottom of the movable plug 701 is fixedly connected to a vertical shaft 706. The bottom of the vertical shaft 706 and inside the drain pipe 302 is fixedly connected to a drain piston 707. The bottom of the drain piston 707 is a metal ring with a radius slightly smaller than that of the drain piston 707. It is made of hard material and will not deform under pressure, nor will it rub against the inner wall of the drain pipe 302.

[0061] The bottom of the fixed tube 7 is fixedly connected to the bottom of the inner wall of the outer tube 3. Drainage holes 708 are provided around the bottom of the fixed tube 7. The radius of the inner wall of the fixed tube 7 is the same as the radius of the inner wall of the drain tube 302. The top of the drain piston 707 is located inside the fixed tube 7 and can seal the drain hole 708.

[0062] like Figure 7 and Figure 8 The water and fertilizer flowing into the space formed by the outer sleeve 3 and the fixed pipe 7 will flow downward to the inner bottom of the outer sleeve 3. Since the drain piston 707 closes the drain hole 708, the water and fertilizer cannot pass through the drain pipe 302 during the upward movement of the movable plug 701 (when the outer sleeve 3 is in an upward state).

[0063] As the outer casing 3 continues to move downward, the movable cover 205 scrapes away the sand layer on the soil surface. The drainage pipe 302 (located between the two movable covers 205) moves downward with the outer casing 3. The bottom of the drainage pipe 302 has a soil-breaking tip, which can drill downward into the soil, causing cracks to form on the soil surface.

[0064] The drainage piston 707 is fixed by the vertical shaft 706 and the movable plug 701, so that when the outer sleeve 3 and the drainage pipe 302 move downward, the drainage piston 707 moves upward relative to the drainage pipe 302. As the bottom of the drainage pipe 302 moves from contacting the soil surface to penetrating into the soil, the bottom of the drainage piston 707 gradually moves upward to above the drainage hole 708. At this time, the water and fertilizer at the bottom of the outer sleeve 3 can enter the drainage pipe 302 through the drainage hole 708, and then fall directly into the soil below the drainage pipe 302. Some of the fertilizer and water can directly enter the soil through the soil gap formed by the soil-breaking tip at the bottom of the drainage pipe 302, realizing the drip irrigation of fertilizer and water into the soil.

[0065] After drip irrigation is completed, the outer casing 3 is moved upwards, as follows: Figure 1 When the outer sleeve 3 and drain pipe 302 first move upward, the fixing ring 201 restricts the extension of the spring 202, and the spring 202 applies pressure to the movable ring 203. At this time, the two movable covers 205 will not approach each other. After the outer sleeve 3 and drain pipe 302 move upward a certain distance and enter between the two movable covers 205, the two movable covers 205 will approach each other under the action of the spring 202, and the drain pipe 302 will be inserted between the two movable covers 205.

[0066] At the same time, the upward movement of the outer sleeve 3 and the drain pipe 302 will cause the drain piston 707 and the movable plug 701 to move downward relative to each other. At this time, the bottom of the drain piston 707 (the bottom of the drain piston 707 is made of iron) will move downward relative to the drain pipe 302. If soil is attached to the inside of the drain pipe 302, the bottom of the drain piston 707 will push the soil out of the drain pipe 302 to prevent the soil from attaching to the inside of the drain pipe 302 and affecting the subsequent drip irrigation operation.

[0067] The relative downward movement of the movable plug 701 will cause the receiving cavity 702 to move downward and connect with the water and fertilizer input pipe 9. The water and fertilizer inside the water and fertilizer input pipe 9 will enter the receiving cavity 702, which will facilitate the next water and fertilizer drip irrigation.

[0068] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed invention.

Claims

1. A drip irrigation device for deep-sown wheat, comprising a support frame (1) and an upper and lower movable outer casing (3), characterized in that, The outer tube (3) is provided with a sand scraping mechanism, which includes movable covers (205) that can be moved away from each other. The movable covers (205) are used to horizontally scrape the sand layer on the surface of the area to be dripped. The inner wall of the outer sleeve (3) is fixedly connected to a fixed pipe (7) via a fixed shaft (8). The fixed pipe (7) can move up and down together with the outer sleeve (3). A supply component is installed inside the fixed pipe (7). The supply component is used for quantitative delivery and discharge of water and fertilizer. The supply component includes: The movable plug (701) is slidably disposed inside the fixed tube (7), and a receiving cavity (702) for quantitatively containing water and fertilizer is provided on one side of it. The drain pipe (302) is fixed to the bottom of the outer sleeve (3), and its bottom is provided with a soil-breaking tip for drilling into the soil; The drain piston (707) is fixed to the bottom of the movable plug (701) via a vertical shaft (706) and is located inside the drain pipe (302); The supply assembly includes drain holes (708) opened around the bottom of the fixed tube (7), and the top of the drain piston (707) is located inside the fixed tube (7) to close the drain holes (708). A sealing head (703) is fixedly connected to the top of the fixed pipe (7). A drain outlet (704) is formed between the top of the sealing head (703) and the top of the outer sleeve (3) to guide the water and fertilizer discharged from the receiving cavity (702) into the space between the outer sleeve (3) and the fixed pipe (7). A water and fertilizer input pipe (9) is fixed on the fixed pipe (7), one end of which extends to the outside of the outer sleeve (3), and the other end is connected to the receiving cavity (702); The sand-scraping mechanism also includes a fixed ring (201), a spring (202), a movable ring (203), and a push rod (204); the fixed ring (201) is fixed to the outer surface of the outer sleeve (3); the movable ring (203) is sleeved on the outer surface of the outer sleeve (3), and the two ends of the spring (202) are fixed to the movable ring (203) and the fixed ring (201) respectively; the two sides of the movable ring (203) are rotatably connected to the push rod (204), and the other end of the push rod (204) is rotatably connected to the movable cover (205); the two movable covers (205) are arranged opposite to each other, and the bottom of the cover is provided with a sand-scraping part (2051); A fixed rod (2041) is fixedly connected to one side of the push rod (204), and a guide rod (2042) is fixedly connected to one end of the fixed rod (2041); a height-adjustable mating shaft (406) is provided below the guide rod (2042). The top of the movable plug (701) is fixedly connected to a vertical rod (705). The top of the vertical rod (705) passes through the connecting top pipe (301) set at the top of the outer sleeve (3) and is fixedly connected to the support frame (1) to ensure that the movable plug (701) and the drain piston (707) do not move down with the fixed pipe (7).

2. A drip irrigation device for deep-sown wheat according to claim 1, characterized in that, An expansion slot (12) is provided on the inner wall of the connecting jacking pipe (301). The inner radius of the expansion slot (12) is larger than the radius of the movable plug (701), providing space for the movable plug (701) to move upward.

3. A drip irrigation device for deep-sown wheat according to claim 2, characterized in that, The bottom of the drain piston (707) is made of metal and its radius is slightly smaller than that of the main body of the drain piston (707). It is used to push out the soil attached to the inside of the drain pipe (302) when the drain pipe (302) moves upward.

4. A drip irrigation device for deep-sown wheat according to claim 1, characterized in that, The support frame (1) is provided with a support mechanism, which is used to drive the outer sleeve (3) to move up and down. The support mechanism includes a fixed cylinder (501), a fixed column (502), a horizontal connecting rod (503), a vertical connecting rod (504), a first fixed sleeve (505), and a second fixed sleeve (506). Among them, the fixed cylinder (501) is fixedly installed on the support frame (1), and its telescopic end is fixed to the fixed column (502); the fixed column (502) is fixed to the first fixed sleeve (505) through the horizontal connecting rod (503); the horizontal connecting rod (503) is fixed to the second fixed sleeve (506) through the vertical connecting rod (504); the second fixed sleeve (506) is fixed to the surface of the outer sleeve (3), and the first fixed sleeve (505) is fixed to the outer surface of the connecting top pipe (301).

5. A drip irrigation device for deep-sown wheat according to claim 1, characterized in that, The bottom of the support frame (1) is provided with an adjustment mechanism for adjusting the height of the mating shaft (406). The adjustment mechanism includes a U-shaped rod (401), a protruding plate (402), a first locking nut (403), a second locking nut (404), a connecting plate (405), and a mating shaft (406). The U-shaped rod (401) is fixed to the bottom of the support frame (1); the first locking nut (403) and the second locking nut (404) are threaded onto the U-shaped rod (401) and located above and below the protruding plate (402) to adjust and fix the height of the protruding plate (402); the protruding plate (402) is fixedly connected to the mating shaft (406) through the connecting plate (405).

6. A drip irrigation device for deep-sown wheat according to claim 1, characterized in that, One of the movable covers (205) has a guide rod (10) fixed to its inner wall, and the other movable cover (205) has a guide tube (11) fixed to its inner wall. The guide rod (10) passes through the guide tube (11) to guide the two movable covers (205) to move horizontally.

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