Water and fertilizer integrated drip irrigation device for deep sowing of wheat

Abstract

The invention relates to the technical field of wheat drip irrigation, in particular to a water and fertilizer integrated drip irrigation device for deep sowing of wheat, the water and fertilizer integrated drip irrigation device comprises a support frame and an outer sleeve moving up and down, a sand scraping mechanism is arranged on the outer sleeve, the sand scraping mechanism comprises movable covers which can be far away from each other, and the movable covers are used for horizontally and movably scraping a sand layer on the surface of an area to be subjected to drip irrigation; the inner wall of the outer sleeve is fixedly connected with a fixed pipe through a fixed shaft, the fixed pipe can move up and down along with the outer sleeve, before drip irrigation and in the downward moving process of the outer sleeve, the two movable covers are separated from each other, and after a sand layer above soil in a drip irrigation area is scraped, the two movable covers drill into the soil from the bottom of the drainage pipe, and a gap is formed in the surface of the soil; fertilizer and water are subjected to drip irrigation through the drainage pipe, a sand layer on the soil surface is avoided, water and fertilizer cannot be consumed by the sand layer, part of the water and fertilizer can enter the soil through soil gaps, surface evaporation and runoff loss can be remarkably reduced, and the water and fertilizer utilization efficiency is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to mechanized agricultural implement manufacturing, in particular to the field of wheat drip irrigation technology, and more particularly to a water and fertilizer integrated drip irrigation device for deep-seeded wheat. BACKGROUND

[0002] Kashi region is dry in climate, irrigation water is severely insufficient, and is adjacent to Taklimakan Desert, the surface layer of soil is rich in sand layer, and the water and fertilizer retaining capacity is extremely poor. In order to ensure the emergence and growth of wheat, the seeds need to be sown in deep soil, so as to effectively utilize the limited water, avoid the seeds being placed in dry sand layer, protect the germination and seedling and root system, resist the harm of surface drought and wind erosion, and improve the water utilization rate. When watering and fertilizing, the drip irrigation mode is usually adopted.

[0003] In the prior art, such as patent application number "CN202420352381.9", a drip irrigation device for agricultural soil fertilizer application is provided, which comprises a drip irrigation frame, a vertical plate, a roller, a first rotating shaft, a drip irrigation adjusting assembly, a liquid storage tank and a stirring assembly. The drip irrigation adjusting assembly is adopted, and the drip irrigation angle can be adjusted during the movement of the drip irrigation equipment, so as to increase the range of drip irrigation, and thus the drip irrigation effect is improved.

[0004] The traditional surface drip irrigation technology faces the core technical bottleneck of "leaking on the top and evaporating on the bottom" when applied in Kashi sandy soil area. After irrigation water and fertilizer are applied to the surface, they will first encounter the sand layer, and the water will be consumed by the sand layer, causing invalid leaching. Part of the water and fertilizer retained in the surface layer is quickly evaporated and lost due to the extremely dry climate and strong evaporation force in the local area. As a result, the actual effective water and fertilizer supply in the wheat rhizosphere is severely insufficient. The existing technology cannot realize precise targeted delivery of water and fertilizer, and it is urgent to develop a technology that can avoid the interference of the sand layer and guide the delivery of water and fertilizer to the inside of the soil for irrigation. SUMMARY

[0005] The present application aims to provide a water and fertilizer integrated drip irrigation device for deep-seeded wheat to solve the problems in the background art.

[0006] The purpose of the present application can be achieved by the following technical solutions: A water and fertilizer integrated drip irrigation device for deep-seeded wheat, comprising a support frame and an outer sleeve pipe moving up and down, a sand scraping mechanism is arranged on the outer sleeve pipe, the sand scraping mechanism comprises movable covers that can move away from each other, and the movable covers are used to horizontally move and scrape 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 pipe through a fixed shaft, the fixed pipe can move up and down together with the outer sleeve pipe, a supply assembly is arranged in the fixed pipe, the supply assembly is used for quantitative delivery and discharge of water and fertilizer, and the supply assembly comprises: A movable plug is slidingly arranged in the fixed pipe, and a containing cavity for containing water and fertilizer is formed in one side of the movable plug; a drainage pipe fixed to the bottom of the fixed tube, the bottom of the drainage pipe being provided with a soil breaking tip for drilling into the soil; a drainage piston fixed to the bottom of the movable plug through a vertical shaft and located inside the drainage pipe.

[0007] Preferably, the supply assembly comprises drainage holes opened around the bottom of the fixed tube, and the top of the drainage piston is located in the fixed tube for closing the drainage holes. The top of the fixed tube is fixedly connected with a sealing head, and a drainage opening is formed between the top of the sealing head and the top of the outer sleeve for guiding the water and fertilizer discharged from the containing cavity into the space between the outer sleeve and the fixed tube. The fixed tube is fixed with a water and fertilizer input pipe, one end of which extends to the outside of the outer sleeve, and the other end of which communicates with the containing cavity. When the outer sleeve moves downward, the fixed tube moves downward with it, while the movable plug remains stationary, so that the movable plug moves upward relative to the fixed tube, and the water and fertilizer in the containing cavity flows into the bottom of the outer sleeve through the drainage opening. At the same time, the bottom of the drainage pipe drills into the soil, the drainage piston moves upward relative to the drainage pipe and opens the drainage holes, the water and fertilizer is precisely delivered to the soil surface through the drainage pipe, and better flows into the soil through the gap formed by the soil breaking tip drilled into the soil, avoiding the loss caused by overflow of the water and fertilizer on the soil surface.

[0008] Preferably, the sand scraping mechanism further comprises 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; the two sides of the movable ring are rotatably connected with the push rod, and the other end of the push rod is rotatably connected with the movable cover; the two movable covers are oppositely arranged, and the bottom of each movable cover is provided with a sand scraping part. One side of the push rod is fixedly connected with a fixed rod, one end of the fixed rod is fixedly connected with a guide inclined rod, and the lower side of the guide inclined rod is provided with a height-adjustable matching shaft.

[0009] Preferably, the top of the movable plug is fixedly connected with a vertical hanging rod, the top of the vertical hanging rod passes through a connecting top pipe arranged at the top of the outer sleeve and is fixedly connected with a supporting frame, so as to ensure that the movable plug and the drainage piston do not move downward with the fixed tube.

[0010] Preferably, an expansion notch is opened in the inner wall of the connecting top pipe, and the inner radius of the expansion notch is greater than the radius of the movable plug, so as to provide space for the upward movement of the movable plug.

[0011] Preferably, the bottom of the drainage piston is made of metal, and the radius of the bottom is slightly smaller than the radius of the main body of the drainage piston, so as to push the soil attached to the inside of the drainage pipe out when the drainage piston moves upward.

[0012] Preferably, the support frame is provided with a supporting mechanism for driving the outer sleeve to move up and down, the supporting mechanism comprising a fixed air cylinder, a fixed column, a horizontal connecting rod, a vertical connecting rod, a first fixed sleeve and a second fixed sleeve; The fixed air cylinder is fixedly installed on the support frame, and the telescopic end thereof is fixed with the fixed column; the fixed column is fixed with the first fixed sleeve through the horizontal connecting rod; the horizontal connecting rod is fixed with the second fixed sleeve through the vertical connecting rod; the second fixed sleeve is fixed on the surface of the outer sleeve; and the first fixed sleeve is fixed on the outer surface of the connecting top pipe.

[0013] Preferably, the bottom of the support frame is provided with an adjusting mechanism for adjusting the height of the matching shaft, the adjusting mechanism comprising a U-shaped rod, a protruding plate, a first locking nut, a second locking nut, a connecting plate and the matching shaft; The U-shaped rod is fixed on the bottom of the support frame; the first locking nut and the second locking nut are threadedly connected to the U-shaped rod and located above and below the protruding plate, for adjusting and fixing the height of the protruding plate; and the protruding plate is fixedly connected with the matching shaft through the connecting plate.

[0014] Preferably, the inner wall of one of the movable covers is fixed with a guide rod, and the inner wall of the other movable cover is fixed with a guide pipe, the guide rod penetrating through the guide pipe, for guiding the horizontal movement of the two movable covers.

[0015] The application has the following beneficial effects: When applied to water and fertilizer drip irrigation after wheat sowing in the Kashi region, the two movable covers can be separated from each other in the process of moving down of the outer sleeve before drip irrigation, the sand layer above the soil in the drip irrigation area is scraped off, the bottom of the drain pipe penetrates into the soil, and a gap is formed on the soil surface, the water and fertilizer are drip irrigated through the drain pipe, the sand layer on the soil surface is avoided, at this time, the water and fertilizer will not be consumed by the sand layer, and part of the water and fertilizer can enter the soil through the soil gap, which can significantly reduce the surface evaporation and runoff loss, improve the water and fertilizer utilization efficiency, and avoid waste of water resources.

[0016] Secondly, when applied to water and fertilizer drip irrigation after wheat sowing in the Kashi region, the bottom of the drain pipe penetrates into the soil, and a drainage channel is formed in cooperation with the outer sleeve, when drip irrigation is performed, the water and fertilizer can flow directly from the channel formed by the outer sleeve and the drain pipe to the soil, avoiding the water and fertilizer flowing out of the pipe and being blown away by strong wind, causing waste of water and fertilizer, preventing uneven distribution of water and nutrients in the soil, affecting the uniformity of wheat emergence and balanced development of root system, and finally leading to yield reduction, and after the drain pipe is separated from the soil, the soil adhered to the inside of the drain pipe is pushed out by the bottom of the drain piston, avoiding the soil adhering to the inside of the drain pipe.

[0017] 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.

[0018] 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

[0019] 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. Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is the present invention. Figure 1 Schematic diagram of the bottom structure of the inner and outer jacket; Figure 3 This is the present invention. Figure 1 Side view of the inner and outer jacket; Figure 4 This is the present invention. Figure 1 A schematic diagram of the structure of the central movable cover section; Figure 5 This is the present invention. Figure 3 A schematic diagram of the structure of the adjustment mechanism section; Figure 6 This is the present invention. Figure 5 Schematic diagram of the bottom structure of the U-shaped rod; Figure 7 This is the present invention. Figure 1 Cross-sectional view of the inner and outer sleeve sections; Figure 8 is the present invention Figure 7 is a structural schematic diagram of the drain pipe part in the present invention.

[0020] The reference signs in the drawings are as follows: 1, support frame; 201, fixed ring; 202, spring; 203, movable ring; 204, push rod; 2041, fixed rod; 2042, guide inclined rod; 205, movable cover; 2051, sand scraping part; 3, outer sleeve pipe; 301, connecting top pipe; 302, drain pipe; 401, U-shaped rod; 402, protruding plate; 403, first locking nut; 404, second locking nut; 405, connecting plate; 406, matching shaft; 501, fixed cylinder; 502, fixed column; 503, horizontal connecting rod; 504, vertical connecting rod; 505, first fixed sleeve; 506, second fixed sleeve; 7, fixed pipe; 701, movable plug; 702, containing cavity; 703, sealing head; 704, drainage opening; 705, vertical hanger rod; 706, vertical shaft; 707, drainage piston; 708, drainage hole; 8, fixed shaft; 9, water and fertilizer input pipe; 10, guide rod; 11, guide pipe; 12, expansion notch. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0022] As Figure 1 , a water and fertilizer integrated drip irrigation device for deep-seeded wheat, mainly used for drip irrigation of deep-seeded wheat in Kashi region, which comprises a support frame 1, a sand scraping mechanism, an outer sleeve pipe 3 which can move up and down, an adjusting mechanism, a supporting mechanism and a supply assembly; The support frame 1 supports the whole device and is fixed on an external working vehicle. The support frame 1 can be fixed by opening holes and using bolts, or can be directly welded to the external working vehicle; The sand scraping mechanism comprises 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 pipe 3. The movable ring 203 and the spring 202 are sleeved on the outer surface of the outer sleeve pipe 3. The two ends of the spring 202 are fixed with the movable ring 203 and the fixed ring 201 respectively, and the spring 202 has an upward pulling force on the movable ring 203; The two sides of the movable ring 203 are rotationally connected with the push rods 204, the other ends of the push rods 204 are rotationally connected with the movable covers 205, the two movable covers 205 are recessed, and under the action of the spring 202 pulling the movable ring 203 upwards, the two movable covers 205 are pulled by the two push rods 204 and abut against each other.

[0023] One side of the push rod 204 is fixedly connected with the fixed rod 2041, one end of the fixed rod 2041 is fixedly connected with the guide inclined rods 2042, the guide inclined rods 2042 are provided with two, which are parallel to the two push rods 204, and the lower part of the guide inclined rods 2042 is provided with the height-adjustable cooperation shafts 406, which are provided with two and located below the bottom of the guide inclined rods 2042 (such as Figure 1 and Figure 2 ); Before the drip irrigation of water and fertilizer to the wheat seed planting area, the sand scraping mechanism is lowered synchronously when the outer sleeve 3 is lowered, the sand scraping parts 2051 at the bottom of the movable covers 205 finally pass through the sand layer, the guide inclined rods 2042 are abutted against the cooperation shafts 406 when the push rods 204 are lowered, the cooperation shafts 406 relatively press the guide inclined rods 2042, the guide inclined rods 2042 drive the push rods 204 to move through the fixed rod 2041, so that the push rods 204 rotate and drive the two movable covers 205 to separate from each other, and the sand scraping parts 2051 at the bottom of the movable covers 205 separate from each other to scrape the sand layer on the soil surface of the position where the water and fertilizer are applied.

[0024] After the drip irrigation of water and fertilizer to the wheat seed planting area, the outer sleeve 3 is raised to drive the sand scraping mechanism to be raised, the movable ring 203 is raised under the pulling force of the spring 202, the movable ring 203 drives the movable covers 205 through the push rods 204, so that the two movable covers 205 abut against each other.

[0025] As Figure 3 , the supporting 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; The fixed cylinder 501 is fixedly installed on the support frame 1, the fixed column 502 is fixed through the horizontal connecting rod 503 and the first fixed sleeve 505, the horizontal connecting rod 503 is fixed through 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, and when the fixed cylinder 501 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, and 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.

[0026] As Figure 4One of the movable covers 205 has a guide rod 10 fixed on one side of the inner wall, and the other movable cover 205 has a guide pipe 11 fixed on the top of the inner wall, the guide rod 10 passes through the guide pipe 11, and is used to ensure the horizontal movement of the two movable covers 205 when they are separated.

[0027] As Figure 5 And Figure 6 The bottom of the support frame 1 is provided with an adjusting mechanism, which comprises a U-shaped rod 401, a raised plate 402, a first locking nut 403, a second locking nut 404, a connecting plate 405 and a matching shaft 406. 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 provided with threads, and pass through the raised plate 402, the first locking nut 403 and the second locking nut 404 are respectively threadedly connected to the U-shaped rod 401 above and below the raised plate 402, so as to fix the raised plate 402, the thread directions on the two vertical ends are opposite, so as to avoid loosening, by adjusting the positions of the first locking nut 403 and the second locking nut 404, the height of the raised plate 402 can be adjusted, the raised plate 402 and the connecting plate 405 are fixedly connected, the connecting plate 405 and the matching shaft 406 are fixedly connected, and then the height of the matching shaft 406 is adjusted to adapt to the vehicle body of the working vehicle of different heights.

[0028] As Figure 7 The inside of the outer sleeve 3 is provided with a fixed pipe 7, the outer surface of the fixed pipe 7 and the inner wall of the outer sleeve 3 are fixedly connected with a fixed shaft 8, and the fixed pipe 7 is fixed with the outer sleeve 3 through the fixed shaft 8, so that the fixed pipe 7 can move up and down together with the outer sleeve 3. As Figure 7 The fixed pipe 7 is provided with a supply assembly, the supply assembly comprises a movable plug 701, the movable plug 701 is located in the inside of the fixed pipe 7, the inside of the movable plug 701 is made of metal material, the outside is made of wear-resistant rubber material, so as to ensure the movable sealing between the movable plug 701 and the fixed pipe 7, one side of the movable plug 701 is provided with a containing cavity 702, the fixed pipe 7 is fixedly connected with a water and fertilizer input pipe 9, 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 working vehicle, driven by a pump to transport the mixed water and fertilizer) is connected with the water and fertilizer input pipe 9 through a hose after mixing the water and fertilizer, the water and fertilizer input pipe 9 and the containing cavity 702 have the same height, so as to input the water and fertilizer into the inside of the containing cavity 702.

[0029] As Figure 1 And Figure 7The top of the fixed pipe 7 is fixedly connected with a sealing head 703 made of wear-resistant rubber material. The top of the sealing head 703 is flush with the top of the movable plug 701. The sealing head 703 is not connected with the top of the outer sleeve 3, so as to form a drainage port 704. The top of the outer sleeve 3 is fixedly connected with a connecting top pipe 301. The top of the vertical lifting rod 705 is fixedly connected with the connecting top pipe 301 and the support frame 1. The first fixed sleeve 505 is fixed to the outer surface of the connecting top pipe 301, so as to drive the connecting top pipe 301 to move up and down. After the water and fertilizer are mixed, the water and fertilizer are input into the containing cavity 702 through the water and fertilizer input pipe 9, and the containing cavity 702 is filled. When the outer sleeve 3 moves downward, the fixed pipe 7 moves downward. Since the top of the vertical lifting rod 705 is fixed with the support frame 1, the vertical lifting rod 705 and the movable plug 701 do not move downward. The movable plug 701 moves upward relative to the fixed pipe 7. The movable plug 701 passes through the sealing head 703. The water and fertilizer in the containing cavity 702 are discharged through the drainage port 704 and flow into the space formed by the outer sleeve 3 and the fixed pipe 7. The inner wall of the connecting top pipe 301 is provided with an expansion notch 12. The inner radius of the expansion notch 12 is greater than the radius of the movable plug 701. When the movable plug 701 moves upward, the movable plug 701 moves into the expansion notch 12, so that the inner wall of the connecting top pipe 301 does not cause abrasion to the movable plug 701, and the service life of the movable plug 701 is improved.

[0030] The bottom of the outer sleeve 3 is fixedly connected with a drainage pipe 302. The bottom of the drainage pipe 302 is located between the two movable covers 205. The bottom of the movable plug 701 is fixedly connected with a vertical shaft 706. The bottom of the vertical shaft 706 is fixedly connected with a drainage plug 707 in the drainage pipe 302. The bottom of the drainage plug 707 is a metal ring with a radius slightly smaller than the radius of the drainage plug 707 and is made of hard material. The drainage plug 707 does not deform under pressure and does not rub against the inner wall of the drainage pipe 302.

[0031] The bottom of the fixed pipe 7 is fixedly connected with the inner wall of the outer sleeve 3. The bottom of the fixed pipe 7 is provided with drainage holes 708 around the bottom. The inner wall of the fixed pipe 7 has the same radius as the inner wall of the drainage pipe 302. The top of the drainage plug 707 is located in the fixed pipe 7, so as to close the drainage holes 708.

[0032] As Figure 7 and Figure 8 The water and fertilizer flowing into the space formed by the outer sleeve 3 and the fixed pipe 7 flow downward to the inner bottom of the outer sleeve 3. Since the drainage plug 707 closes the drainage holes 708, the water and fertilizer cannot pass through the drainage pipe 302 during the upward movement of the movable plug 701 (the outer sleeve 3 is in the upward movement state).

[0033] With the continuous downward movement of the outer sleeve 3, the movable cover 205 scrapes the soil surface sand layer, and the drain pipe 302 (located between the two movable covers 205) moves downward with the outer sleeve 3, and the bottom of the drain pipe 302 has a soil breaking tip that can drill into the soil inside, so that cracks are formed on the soil surface; When the outer sleeve 3 and the drain pipe 302 move downward, the drain piston 707 moves upward relative to the drain pipe 302, and during the process of the bottom of the drain pipe 302 from contacting the soil surface to drilling into the soil inside, the bottom of the drain piston 707 gradually moves upward to above the drain hole 708, at this time, the water and fertilizer at the bottom of the outer sleeve 3 can enter the drain pipe 302 through the drain hole 708, and then directly fall into the soil below the drain pipe 302 through the drain pipe 302, and part of the water and fertilizer can directly enter the soil inside along the soil cracks formed by the soil breaking tip at the bottom of the drain pipe 302, realizing drip irrigation of water and fertilizer into the soil inside.

[0034] After completing the drip irrigation, the outer sleeve 3 moves upward, as shown in Figure 1 When the outer sleeve 3 and the drain pipe 302 just start to move upward, the fixed ring 201 limits the extension of the spring 202, and the spring 202 exerts pressure on the movable ring 203, at this time, the two movable covers 205 will not approach each other, and after the outer sleeve 3 and the drain pipe 302 move upward by a distance and enter between the two movable covers 205, the two movable covers 205 will approach each other under the action of the pulling force of the spring 202, and the drain pipe 302 will be clamped between the two movable covers 205; At the same time, the upward movement of the outer sleeve 3 and the drain pipe 302 will cause the relative downward movement of the drain piston 707 and the movable plug 701, 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, and 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, avoiding the attachment of soil to the inside of the drain pipe 302 affecting subsequent drip irrigation operations; The relative downward movement of the movable plug 701 will cause the downward movement of the containing cavity 702 and the communication with the water and fertilizer input pipe 9, and the water and fertilizer in the water and fertilizer input pipe 9 will enter the inside of the containing cavity 702, facilitating the next water and fertilizer drip irrigation.

[0035] The above shows and describes the basic principles, main features and advantages of the present application. It should be understood by those skilled in the art that the present application is not limited to the above embodiments, and the above embodiments and descriptions in the specification are only to illustrate the principles of the present application, and various changes and improvements can be made without departing from the spirit and scope of the present application, and these changes and improvements all fall within the scope of the claimed present application.

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 casing (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).

2. A drip irrigation device for deep-sown wheat according to claim 1, characterized in that, 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); When the outer tube (3) moves down, the fixed tube (7) moves down as well, while the movable plug (701) remains stationary, causing the movable plug (701) to move up relative to the fixed tube (7). The water and fertilizer in the receiving cavity (702) flow into the bottom of the outer tube (3) from the drain outlet (704). At the same time, the bottom of the drain pipe (302) is drilled into the soil, and the drain piston (707) moves up relative to the drain pipe (302) and opens the drain hole (708). The water and fertilizer are precisely delivered to the soil surface through the guidance of the drain pipe (302), and flow into the soil better through the gap formed by the soil-breaking tip that drills into the soil, avoiding the overflow of water and fertilizer on the soil surface and causing loss.

3. A drip irrigation device for deep-sown wheat according to claim 1, characterized in that, 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).

4. A drip irrigation device for deep-sown wheat according to claim 1, characterized in that, 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).

5. A drip irrigation device for deep-sown wheat according to claim 4, 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.

6. A drip irrigation device for deep-sown wheat according to claim 5, 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.

7. A drip irrigation device for deep-sown wheat according to claim 4, 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).

8. 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).

9. 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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