Irrigation device and method for alfalfa cultivation in saline-alkali land

Abstract

The present invention discloses an irrigation device and method for alfalfa cultivation in saline-alkali land, and relates to the technical field of alfalfa cultivation, including a water storage tank, an anti-blocking irrigation mechanism, the anti-blocking irrigation mechanism including an irrigation cylinder, an irrigation pipe and a spiral head, the irrigation cylinder is fixedly installed in the middle of the bottom end of the water storage tank by bolts, the irrigation pipe is fixedly installed in the middle of the bottom end of the irrigation cylinder by bolts, and the spiral head is movably arranged at the bottom end of the irrigation cylinder. The present invention uses a suction cylinder to suck water from the water storage tank and the irrigation pipe and then discharge it, which is convenient for accurately controlling the amount of irrigation water, and while the piston reciprocates, it drives the spiral head to move downward and rotate, so that the bottom end of the irrigation pipe blocked by the soil when the device is inserted into the soil can be turned on by the spiral head, and the soil below the bottom end of the irrigation pipe is drilled out of the water seepage space by the reciprocating lifting and rotating spiral head, which further improves the irrigation effect and the irrigation efficiency when cultivating alfalfa in saline-alkali land.

Description

Technical Field

[0001] The invention relates to the technical field of alfalfa cultivation, in particular to an irrigation device and method for alfalfa cultivation in saline-alkali land. Background Art

[0002] Alfalfa has a strong ability to tolerate salt and alkali, and stands out in the improvement of saline-alkali land. Alfalfa has a well-developed root system that can penetrate more than 2 meters into the soil, effectively consuming water in the soil and absorbing nutrients, while blocking the rise of salt. This unique root structure enables alfalfa to grow well on saline-alkali land and gradually reduce the salt content in the soil over time. The Chinese patent application with application number 202410397692.1 discloses "an irrigation device for saline-alkali land management, including a water main pipe, a plurality of irrigation pipes connected to the water main pipe, one end of the irrigation pipe is connected to the water main pipe, and the other end of the irrigation pipe is connected to the water main pipe. The irrigation pipe has an irrigation head which is detachably sealed and fixedly installed at the other end; the irrigation head is provided with a battery and a motor. Beneficial effect: The irrigation device for saline-alkali land treatment of the present application directly irrigates the deep soil below the surface through refined directional irrigation technology to reduce the salt content in the soil in the area. The root system of crops also grows in the soil in the area. Since the soil in the area is buried deep underground, it avoids the large amount of water evaporation caused by sunlight and high temperature. Therefore, most of the water irrigated to the area is used to keep the salt content in the soil within a normal range for a long time, and the utilization rate of water resources is high.

[0003] This technical solution only solves the problem that the current method of flooding for saline-alkali land management cannot form a long-term management mechanism for saline-alkali land, the irrigation method is simple and crude, water resources are seriously wasted, water resource utilization is low, and the cost is high. However, when the irrigation pipe is directly inserted into the ground, the pipe is easily blocked by soil, and during the long-term use of the irrigation device, the soil is easy to enter the pipe after being moistened, causing the irrigation pipe to be blocked, and then resulting in poor irrigation effect. In addition, in saline-alkali land, water resources are very precious, but when collecting rainwater for irrigation, the rainwater is not stored for a long time and is easy to evaporate, resulting in a large amount of water resource waste. Summary of the invention

[0004] The object of the present invention is to provide an irrigation device and method for alfalfa cultivation in saline-alkali land to solve the problems raised in the above-mentioned background technology.

[0005] To achieve the above object, the present invention provides the following technical solution: an irrigation device for alfalfa cultivation in saline-alkali land, comprising a water storage tank, a water supply pipe is fixedly installed on the side wall of the water storage tank by bolts, and a recovery pipe is fixedly installed on the side wall of the water storage tank by bolts and is located below the water supply pipe;

[0006] A rainwater collection mechanism, the rainwater collection mechanism comprising a box cover, a lifting plate and a connecting rod, the box covers are two in total and are movably mounted on the top of the water storage tank through hinges respectively, the lifting plate is movably arranged at the middle upper end of the inner part of the sealing partition, the top end of the connecting rod is movably mounted on the box cover near the middle of the top of the sealing partition through a rotating shaft, and the bottom end of the connecting rod is movably mounted on the side wall of the lifting plate through a rotating shaft;

[0007] The anti-blocking irrigation mechanism includes an irrigation cylinder, an irrigation pipe and a spiral head. The irrigation cylinder is fixedly installed in the middle of the bottom end of the water tank by bolts, the irrigation pipe is fixedly installed in the middle of the bottom end of the irrigation cylinder by bolts, and the spiral head is movably arranged at the bottom end inside the irrigation cylinder.

[0008] Preferably, the rainwater collection mechanism includes a sealing baffle, a solar panel, a control box, a first motor and a first bevel gear, the sealing baffle is fixedly installed in the middle of the top of the water tank by bolts, the two ends of the box covers close to the sealing baffle are connected to the sealing baffle by sliding activities, there are two solar panels and they are fixedly installed in the middle of the tops of the two box covers by bolts, the control box is fixedly installed in the middle upper end of the inside of the sealing baffle by bolts, the first motor is fixedly installed in the inside of the control box by bolts, the first bevel gear is fixedly installed on the output shaft of the first motor by bolts, a battery is fixedly installed in the control box at one end away from the first motor by bolts, and a control device is fixedly installed in the control box at one end close to the first motor by bolts.

[0009] Preferably, the rainwater collecting mechanism comprises a threaded rod, a second bevel gear, a sliding rod, a limit groove and a limit rail, the bottom end of the threaded rod is movably mounted on the top end of the control box through a bearing, the second bevel gear is located inside the control box and is fixedly sleeved on the bottom end of the threaded rod by bolts, the top end of the threaded rod is movably mounted on the bottom end of the sealing partition through a bearing, the second bevel gear is movably connected to the first bevel gear through meshing, the bottom end of the sliding rod is fixedly mounted on the top end of the control box by bolts, the top end of the sliding rod is fixedly mounted on the bottom end of the sealing partition by bolts, the lifting plate is movably sleeved on the threaded rod by threads, the lifting plate is movably sleeved on the sliding rod by sliding, the limit grooves are opened at both ends of the lifting plate, there are two limit rails, which are respectively fixedly mounted on the inner side walls of the water tank by bolts, and the bottom end of the limit rail is fixedly mounted on the top end of the control box by bolts.

[0010] Preferably, the anti-blocking irrigation mechanism includes a second motor, a third bevel gear, a first gear and a fourth bevel gear. The second motor is fixedly mounted on one end of the control box near the battery by bolts, the third bevel gear is fixedly sleeved on the output shaft of the second motor by bolts, the first gear is movably mounted on the inner middle side wall of the control box by a bearing, the fourth bevel gear is fixedly mounted in the middle of the side wall of the first gear by bolts, and the fourth bevel gear is movably connected to the third bevel gear by meshing.

[0011] Preferably, the anti-blocking irrigation mechanism includes a crankshaft, a second gear, a reciprocating rod and a suction cylinder, both ends of the crankshaft are movably mounted in the middle of the inner side wall of the water tank through bearings, the second gear is fixedly sleeved on the crankshaft by bolts, the second gear is movably connected to the first gear through meshing, the top end of the reciprocating rod is movably sleeved in the middle of the crankshaft through a bearing, and the bottom end of the suction cylinder is fixedly mounted in the middle of the inner bottom end of the irrigation cylinder by bolts.

[0012] Preferably, the anti-blocking irrigation mechanism includes a piston, a water suction pipe, a drainage pipe and an anti-blocking rod, the piston is installed inside the suction cylinder by sliding movement, the top end of the piston is fixedly installed with a connecting frame by bolts, the bottom end of the reciprocating rod is movably sleeved in the middle of the connecting frame by a bearing, there are a total of several water suction pipes and they are evenly fixedly installed on the bottom end of the suction cylinder by insertion, an inlet check valve is fixedly provided inside the water suction pipe, there are a total of several drainage pipes and they are evenly fixedly installed on the bottom end of the suction cylinder by bolts, a drainage check valve is fixedly provided inside the drainage pipe, the top end of the anti-blocking rod is movably installed in the middle of the bottom end of the piston by a bearing, and the bottom end of the anti-blocking rod is fixedly installed in the middle of the top end of the spiral head by bolts.

[0013] Preferably, the anti-blocking irrigation mechanism includes an irrigation port, a rotating groove and a limit rod, the irrigation ports are several in number and are evenly opened on the side wall of the spiral head, the rotating groove is threadedly opened on the side wall of the spiral head, the limit rod is fixedly installed on the inner bottom end of the irrigation pipe by bolts, and the limit rod is connected to the rotating groove by sliding.

[0014] The present invention also provides another technical solution: an irrigation method for alfalfa cultivation in saline-alkali land, comprising the following steps:

[0015] S1. Insert the device into the saline-alkali land, pass the irrigation water into the water tank through the water supply pipe, control the second motor to start through the control device, and drive the third bevel gear to rotate through the second motor. When the third bevel gear rotates, the first gear is driven to rotate through the fourth bevel gear. When the first gear rotates, the second gear is driven to rotate, so that the crankshaft rotates with the second gear. When the crankshaft rotates, the piston is driven to reciprocate up and down inside the suction cylinder through the reciprocating rod;

[0016] S2. When the piston moves upward, the drainage pipe is closed due to the drainage one-way valve in the drainage pipe, while the water pumping pipe is connected. At this time, the water in the irrigation cylinder is pumped into the suction cylinder through the water pumping pipe. When the piston moves downward, the water pumping pipe is closed due to the water inlet one-way valve in the suction pipe. At this time, the water in the suction cylinder is discharged into the irrigation pipe through the drainage pipe.

[0017] S3. When the piston moves downward, the anti-blocking rod drives the spiral head to move downward, and the limit rod is slidably connected to the rotating groove, so that the spiral head moves downward and rotates at the same time, so that the bottom end of the irrigation pipe blocked by soil when the device is inserted into the soil can be opened by the spiral head, and the soil below the bottom end of the irrigation pipe is drilled out of the water seepage space by the reciprocating lifting and rotating spiral head, further improving the irrigation effect, and the water in the suction cylinder is pressurized and filled into the irrigation pipe by the piston, and the irrigation port opened on the spiral head makes it convenient to discharge the water in the irrigation pipe while the spiral head moves, thereby improving the irrigation efficiency when cultivating alfalfa in saline-alkali land;

[0018] S4. In saline-alkali land, irrigation devices often need to be used for a long time. The batteries are charged by solar panels. When it is raining, the first motor is started by the control device, and the first motor drives the first bevel gear to rotate. When the first bevel gear rotates, the threaded rod is driven to rotate by the second bevel gear. Under the limit of the slide bar, the limit groove and the limit rail, the lifting plate moves downward. When the lifting plate moves downward, the box cover is driven to rotate downward by the connecting rod, so that the top of the water tank is opened, which facilitates rainwater to enter the water tank. Rainwater is collected by the water tank, and excess rainwater in the water tank can be recycled through the recycling pipe. When there is no precipitation, the first motor is controlled to reverse and drive the lifting plate to rise, so that the box cover is connected to the sealing partition to close the top of the water tank, so as to avoid the waste of water resources caused by the rapid evaporation of water in the water tank, thereby improving the utilization rate of water resources during irrigation in saline-alkali land.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] The present invention is designed and installed with a rainwater collection mechanism. By driving the lifting plate downward, the box cover can be opened at the top of the water tank in rainy weather, so that the water tank opening can collect rainwater, and the excess rainwater in the water tank can be recycled through the recycling pipe. When there is no precipitation, the lifting plate is driven upward so that the box cover seals the top of the water tank, thereby avoiding the waste of water resources caused by the rapid evaporation of water in the water tank, and improving the utilization rate of water resources when irrigating in saline-alkali land.

[0021] The present invention is designed and installed with an anti-blocking irrigation mechanism, which uses a suction cylinder to suck water from a water tank and an irrigation pipe and then discharges it, thereby facilitating precise control of the amount of irrigation water used, and by the movement of a piston in the suction cylinder, the power of water entering the irrigation pipe is enhanced, thereby improving irrigation efficiency, and while the piston reciprocates, the spiral head is driven to move downward and rotate at the same time, so that the bottom end of the irrigation pipe that is blocked by the soil when the device is inserted into the soil can be opened by the rotation of the spiral head, and the soil below the bottom end of the irrigation pipe is drilled out of the water seepage space by the reciprocatingly lifted and rotated spiral head, thereby further improving the irrigation effect and improving the irrigation efficiency when cultivating alfalfa in saline-alkali land. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 Provides an overall structural diagram for an embodiment of the present invention;

[0023] Figure 2 A schematic diagram of the internal structure of a device provided in an embodiment of the present invention;

[0024] Figure 3 A schematic diagram of the internal structure of a control box provided in an embodiment of the present invention;

[0025] Figure 4 A schematic diagram of the structure of the box cover in an open state provided by an embodiment of the present invention;

[0026] Figure 5 A schematic diagram of the anti-blocking irrigation mechanism structure provided by an embodiment of the present invention;

[0027] Figure 6 A schematic diagram of the internal structure of an irrigation cylinder and a suction cylinder provided in an embodiment of the present invention;

[0028] Figure 7 A schematic diagram of the internal structure of an irrigation pipe provided in an embodiment of the present invention.

[0029] In the figure: 1, water storage tank; 2, water supply pipe; 3, recovery pipe; 4, rainwater collection mechanism; 401, sealing partition; 402, box cover; 403, solar panel; 404, control box; 405, first motor; 406, first bevel gear; 407, threaded rod; 408, second bevel gear; 409, slide rod; 410, lifting plate; 411, limit groove; 412, limit rail; 413, connecting rod; 5, anti-blocking irrigation mechanism; 501, irrigation cylinder; 502, irrigation pipe; 503, second motor; 504, third bevel gear; 505, first gear; 506, fourth bevel gear; 507, crankshaft; 508, second gear; 509, reciprocating rod; 510, suction cylinder; 511, piston; 512, water pumping pipe; 513, drainage pipe; 514, anti-blocking rod; 515, spiral head; 516, irrigation port; 517, rotating groove; 518, limit rod; 6, battery; 7, control device. DETAILED DESCRIPTION

[0030] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0031] See also Figures 1 to 7 The present invention provides a technical solution: an irrigation device for alfalfa cultivation in saline-alkali land, comprising a water storage tank 1, a water supply pipe 2 is fixedly installed on the side wall of the water storage tank 1 by bolts, and a recovery pipe 3 is fixedly installed on the side wall of the water storage tank 1 by bolts and is located below the water supply pipe 2;

[0032] The rainwater collecting mechanism 4 includes a box cover 402, a lifting plate 410 and a connecting rod 413. There are two box covers 402, which are movably mounted on the top of the water storage tank 1 through hinges. The lifting plate 410 is movably arranged at the middle upper end of the sealing partition 401. The top end of the connecting rod 413 is movably mounted on the box cover 402 near the middle of the top of the sealing partition 401 through a rotating shaft. The bottom end of the connecting rod 413 is movably mounted on the side wall of the lifting plate 410 through a rotating shaft.

[0033] The anti-blocking irrigation mechanism 5 includes an irrigation cylinder 501, an irrigation pipe 502 and a spiral head 515. The irrigation cylinder 501 is fixedly installed in the middle of the bottom end of the water storage tank 1 by bolts, the irrigation pipe 502 is fixedly installed in the middle of the bottom end of the irrigation cylinder 501 by bolts, and the spiral head 515 is movably arranged at the bottom end inside the irrigation cylinder 501.

[0034] The rainwater collection mechanism 4 includes a sealing baffle 401, a solar panel 403, a control box 404, a first motor 405 and a first bevel gear 406. The sealing baffle 401 is fixedly installed in the middle of the top of the water storage tank 1 by bolts. One end of the two box covers 402 close to the sealing baffle 401 is connected to the sealing baffle 401 by sliding. There are two solar panels 403 and they are fixedly installed in the middle of the top of the two box covers 402 by bolts. The control box 404 is fixedly installed in the middle upper end of the inner part of the sealing baffle 401 by bolts. The first motor 405 is connected to the first bevel gear 406 by bolts. 05 is fixedly installed inside the control box 404 by bolts, the first bevel gear 406 is fixedly installed on the output shaft of the first motor 405 by bolts, a battery 6 is fixedly installed at one end of the control box 404 away from the first motor 405 by bolts, and a control device 7 is fixedly installed at one end of the control box 404 close to the first motor 405 by bolts; the battery 6 is charged by the solar panel 403, and when it is raining, the first motor 405 is controlled to start by the control device 7, and the first bevel gear 406 is driven to rotate by the first motor 405;

[0035] The rainwater collection mechanism 4 includes a threaded rod 407, a second bevel gear 408, a sliding rod 409, a limiting groove 411 and a limiting rail 412. The bottom end of the threaded rod 407 is movably mounted on the top of the control box 404 through a bearing. The second bevel gear 408 is located inside the control box 404 and is fixedly sleeved on the bottom end of the threaded rod 407 by bolts. The top end of the threaded rod 407 is movably mounted on the bottom end of the sealing partition 401 through a bearing. The second bevel gear 408 is movably connected to the first bevel gear 406 through meshing. The bottom end of the sliding rod 409 is fixedly mounted on the top of the control box 404 by bolts. The top end of the sliding rod 409 is fixedly mounted on the bottom end of the sealing partition 401 by bolts. The lifting plate 410 is movably sleeved on the threaded rod 407 through threads. The lifting plate 410 is movably sleeved on the sliding rod 409 by sliding. The limiting grooves 411 are provided at both ends of the lifting plate 410. There are two limiting rails 412, which are respectively screwed and screwed. The bolt is fixedly installed on the inner wall of the water tank 1, and the bottom end of the limit rail 412 is fixedly installed on the top of the control box 404 by bolts; the threaded rod 407 is driven to rotate by the second bevel gear 408, and the lifting plate 410 moves downward under the limit of the slide bar 409, the limit groove 411 and the limit rail 412. When the lifting plate 410 moves downward, the box cover 402 is driven to rotate downward by the connecting rod 413, so that the top of the water tank 1 is opened, thereby facilitating rainwater to enter the water tank 1, and rainwater is collected by the water tank 1. The excess rainwater in the water tank 1 can be recycled through the recycling pipe 3. When there is no precipitation, the first motor 405 is controlled to reverse and drive the lifting plate 410 to rise, so that the box cover 402 is connected to the sealing partition 401 to close the top of the water tank 1, so as to avoid the waste of water resources caused by the rapid evaporation of water in the water tank 1, thereby improving the utilization rate of water resources when irrigating in saline-alkali land;

[0036] The anti-blocking irrigation mechanism 5 includes a second motor 503, a third bevel gear 504, a first gear 505 and a fourth bevel gear 506. The second motor 503 is fixedly mounted on one end of the control box 404 near the battery 6 by bolts, the third bevel gear 504 is fixedly sleeved on the output shaft of the second motor 503 by bolts, the first gear 505 is movably mounted on the inner middle side wall of the control box 404 by a bearing, the fourth bevel gear 506 is fixedly mounted in the middle of the side wall of the first gear 505 by bolts, and the fourth bevel gear 506 is movably connected to the third bevel gear 504 by meshing; the irrigation water is introduced into the water storage tank 1 through the water supply pipe 2, the second motor 503 is controlled to start by the control device 7, the third bevel gear 504 is driven to rotate by the second motor 503, and when the third bevel gear 504 rotates, the first gear 505 is driven to rotate by the fourth bevel gear 506;

[0037] The anti-blocking irrigation mechanism 5 includes a crankshaft 507, a second gear 508, a reciprocating rod 509 and a suction cylinder 510. The two ends of the crankshaft 507 are movably installed in the middle of the inner side wall of the water storage tank 1 through bearings. The second gear 508 is fixedly sleeved on the crankshaft 507 by bolts. The second gear 508 is movably connected with the first gear 505 through meshing. The top of the reciprocating rod 509 is movably sleeved in the middle of the crankshaft 507 through a bearing. The bottom end of the suction cylinder 510 is fixedly installed in the middle of the inner bottom end of the irrigation cylinder 501 by bolts. By driving the second gear 508 to rotate, the crankshaft 507 rotates with the second gear 508. When the crankshaft 507 rotates, the piston 511 is driven by the reciprocating rod 509 to reciprocate up and down inside the suction cylinder 510.

[0038] The anti-blocking irrigation mechanism 5 includes a piston 511, a water pumping pipe 512, a drainage pipe 513 and an anti-blocking rod 514. The piston 511 is installed inside the suction cylinder 510 by sliding movement. The top of the piston 511 is fixedly installed with a connecting frame by bolts. The bottom end of the reciprocating rod 509 is movably sleeved in the middle of the connecting frame through a bearing. There are a total of several water pumping pipes 512 and they are evenly fixedly installed at the bottom end of the suction cylinder 510 by insertion. A water inlet check valve is fixedly installed inside the water pumping pipe 512. There are a total of several drainage pipes 513 and they are evenly fixedly installed at the bottom end of the suction cylinder 510 by bolts. A drainage check valve is fixedly installed inside the drainage pipe 513. The top of the anti-blocking rod 514 is movably mounted in the middle of the bottom of the piston 511 through a bearing, and the bottom of the anti-blocking rod 514 is fixedly mounted in the middle of the top of the screw head 515 through a bolt; by driving the piston 511 to move upward, the drainage one-way valve in the drainage pipe 513 closes the drainage pipe 513, and the water pumping pipe 512 is connected. At this time, the water in the irrigation cylinder 501 is pumped into the suction cylinder 510 through the water pumping pipe 512. When the piston 511 moves downward, the water inlet one-way valve in the water pumping pipe 512 closes the suction pipe 512. At this time, the water in the suction cylinder 510 is discharged into the irrigation pipe 502 through the drainage pipe 513;

[0039] The anti-blocking irrigation mechanism 5 includes an irrigation port 516, a rotating groove 517 and a limiting rod 518. There are a number of irrigation ports 516 that are evenly arranged on the side wall of the spiral head 515. The rotating groove 517 is threadedly arranged on the side wall of the spiral head 515. The limiting rod 518 is fixedly installed at the inner bottom end of the irrigation pipe 502 by bolts. The limiting rod 518 is connected to the rotating groove 517 by sliding. The spiral head 515 is driven to move downward by the anti-blocking rod 514, and the limiting rod 518 is connected to the rotating groove 517 by sliding, so that the spiral head 515 moves downward while rotating. The device is inserted into the soil, so that the bottom end of the irrigation pipe 502 blocked by soil can be rotated and opened by the spiral head 515, and the soil below the bottom end of the irrigation pipe 502 is drilled out of the water seepage space by the reciprocating lifting and rotating spiral head 515, which further improves the irrigation effect. The water in the suction cylinder 510 is pressurized and filled into the irrigation pipe 502 through the piston 511, and the irrigation port 516 opened on the spiral head 515 makes it easier to discharge the water in the irrigation pipe 502 while moving the spiral head 515, thereby improving the irrigation efficiency when cultivating alfalfa in saline-alkali land.

[0040] The present invention also provides another technical solution: an irrigation method for alfalfa cultivation in saline-alkali land, comprising the following steps:

[0041] S1. Insert the device into the saline-alkali land, pass the irrigation water into the water storage tank 1 through the water supply pipe 2, control the second motor 503 to start through the control device 7, and drive the third bevel gear 504 to rotate through the second motor 503. When the third bevel gear 504 rotates, the first gear 505 is driven to rotate through the fourth bevel gear 506. When the first gear 505 rotates, the second gear 508 is driven to rotate, so that the crankshaft 507 rotates with the second gear 508. When the crankshaft 507 rotates, the reciprocating rod 509 drives the piston 511 to reciprocate up and down inside the suction cylinder 510;

[0042] S2. When the piston 511 moves upward, the drainage one-way valve in the drainage pipe 513 blocks the drainage pipe 513, and the water pumping pipe 512 is connected. At this time, the water in the irrigation tube 501 is pumped into the suction tube 510 through the water pumping pipe 512. When the piston 511 moves downward, the water pumping pipe 512 is blocked due to the water inlet one-way valve in the water pumping pipe 512. At this time, the water in the suction tube 510 is discharged into the irrigation tube 502 through the drainage pipe 513.

[0043] S3. When the piston 511 moves downward, the anti-blocking rod 514 drives the spiral head 515 to move downward, and the limiting rod 518 is slidably connected to the rotating groove 517, so that the spiral head 515 moves downward and rotates at the same time, so that the bottom end of the irrigation pipe 502 blocked by soil when the device is inserted into the soil can be rotatably conducted by the spiral head 515, and the soil below the bottom end of the irrigation pipe 502 is drilled out of the seepage space by the reciprocating lifting and rotating spiral head 515, so as to further improve the irrigation effect, and the water in the suction cylinder 510 is pressurized and filled into the irrigation pipe 502 by the piston 511, and the irrigation port 516 provided on the spiral head 515 makes it convenient to discharge the water in the irrigation pipe 502 while the spiral head 515 moves, so as to improve the irrigation efficiency when cultivating alfalfa in saline-alkali land;

[0044] S4. In saline-alkali land, irrigation devices often need to be used for a long time. The solar panel 403 is used to charge the battery 6. When it is raining, the control device 7 controls the first motor 405 to start, and the first motor 405 drives the first bevel gear 406 to rotate. When the first bevel gear 406 rotates, the second bevel gear 408 drives the threaded rod 407 to rotate. Under the limit of the slide bar 409, the limit groove 411 and the limit rail 412, the lifting plate 410 moves downward. When the lifting plate 410 moves downward, the connecting rod 413 drives the box cover 402 to rotate downward, so that the top of the water tank 1 is opened, thereby facilitating rainwater to enter the water tank 1, and collecting rainwater through the water tank 1. The excess rainwater inside the water tank 1 can be recycled through the recycling pipe 3. When there is no precipitation, the first motor 405 is controlled to reverse and drive the lifting plate 410 to rise, so that the box cover 402 is connected to the sealing partition 401 to close the top of the water tank 1, thereby avoiding the waste of water resources caused by the rapid evaporation of water in the water tank 1, and improving the utilization rate of water resources during irrigation in saline-alkali land.

[0045] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0046] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An irrigation device for alfalfa cultivation in saline-alkali land, comprising a water storage tank (1), a water supply pipe (2) fixedly mounted on the side wall of the water storage tank (1), a recovery pipe (3) fixedly mounted on the side wall of the water storage tank (1) and located below the water supply pipe (2), characterized in that: It also includes a rainwater collection mechanism (4), the rainwater collection mechanism (4) including a box cover (402), a control box (404), a lifting plate (410) and a connecting rod (413), the box covers (402) having two in total and being movably mounted on the top of the water storage tank (1), the lifting plate (410) being movably mounted on the middle upper end of the inner part of the sealing partition (401), the top end of the connecting rod (413) being movably mounted on the box cover (402) near the middle of the top of the sealing partition (401), and the bottom end of the connecting rod (413) being movably mounted on the side wall of the lifting plate (410); An anti-blocking irrigation mechanism (5), the anti-blocking irrigation mechanism (5) comprising an irrigation cylinder (501), an irrigation pipe (502) and a spiral head (515), the irrigation cylinder (501) being fixedly mounted in the middle of the bottom end of the water storage tank (1), the irrigation pipe (502) being fixedly mounted in the middle of the bottom end of the irrigation cylinder (501), and the spiral head (515) being movably arranged at the bottom end of the irrigation cylinder (501); The anti-blocking irrigation mechanism (5) further comprises a second motor (503), a third bevel gear (504), a first gear (505) and a fourth bevel gear (506); the third bevel gear (504) is sleeved on the output shaft of the second motor (503) by means of bolts, the first gear (505) is movably mounted on the inner middle side wall of the control box (404) by means of a bearing, the fourth bevel gear (506) is fixedly mounted in the middle of the side wall of the first gear (505) by means of bolts, and the fourth bevel gear (506) is movably connected to the third bevel gear (504) by means of meshing; The anti-blocking irrigation mechanism (5) further comprises a crankshaft (507), a second gear (508), a reciprocating rod (509) and a suction cylinder (510); the two ends of the crankshaft (507) are movably mounted in the middle of the inner side wall of the water storage tank (1) via bearings; the second gear (508) is fixedly sleeved on the crankshaft (507) via bolts; the second gear (508) is movably connected to the first gear (505) via meshing; the top end of the reciprocating rod (509) is movably sleeved in the middle of the crankshaft (507) via a bearing; and the bottom end of the suction cylinder (510) is fixedly mounted in the middle of the inner bottom end of the irrigation cylinder (501) via bolts; The anti-blocking irrigation mechanism (5) further comprises a piston (511), a water pumping pipe (512), a drainage pipe (513) and an anti-blocking rod (514); the piston (511) is mounted inside the suction cylinder (510) by sliding movement; the top end of the piston (511) is fixedly mounted with a connecting frame by bolts; the bottom end of the reciprocating rod (509) is movably sleeved in the middle of the connecting frame by a bearing; a plurality of water pumping pipes (512) are uniformly fixedly mounted in the suction cylinder (510) by being inserted into the connecting frame. 10), a water inlet check valve is fixedly arranged inside the water suction pipe (512), a plurality of drainage pipes (513) are evenly fixedly installed at the bottom end of the suction cylinder (510) by bolts, a drainage check valve is fixedly arranged inside the drainage pipe (513), the top end of the anti-blocking rod (514) is movably installed in the middle of the bottom end of the piston (511) by a bearing, and the bottom end of the anti-blocking rod (514) is fixedly installed in the middle of the top end of the spiral head (515) by bolts; The anti-blocking irrigation mechanism (5) further comprises an irrigation port (516), a rotating groove (517) and a limiting rod (518); the irrigation ports (516) are in total a plurality and are evenly disposed on the side wall of the spiral head (515); the rotating groove (517) is threadedly disposed on the side wall of the spiral head (515); the limiting rod (518) is fixedly mounted on the inner bottom end of the irrigation pipe (502) by means of bolts; the limiting rod (518) is connected to the rotating groove (517) by means of sliding.

2. The irrigation device for alfalfa cultivation in saline-alkali land according to claim 1, characterized in that: The rainwater collection mechanism (4) comprises a sealing baffle (401), a solar panel (403), a first motor (405) and a first bevel gear (406); the sealing baffle (401) is fixedly mounted at the middle of the top end of the water storage tank (1) by means of bolts; one end of the two tank covers (402) close to the sealing baffle (401) is connected to the sealing baffle (401) by means of sliding movement; there are two solar panels (403) and they are fixedly mounted at the middle of the top ends of the two tank covers (402) by means of bolts; the control box (406) is 4) is fixedly mounted at the middle upper end of the sealing baffle (401) by bolts, the first motor (405) is fixedly mounted inside the control box (404) by bolts, the first bevel gear (406) is fixedly mounted on the output shaft of the first motor (405) by bolts, a battery (6) is fixedly mounted at one end of the control box (404) away from the first motor (405) by bolts, and a control device (7) is fixedly mounted at one end of the control box (404) close to the first motor (405) by bolts.

3. The irrigation device for alfalfa cultivation in saline-alkali land according to claim 2, characterized in that: The rainwater collection mechanism (4) comprises a threaded rod (407), a second bevel gear (408), a slide rod (409), a limit groove (411) and a limit rail (412); the bottom end of the threaded rod (407) is movably mounted on the top end of the control box (404) via a bearing; the second bevel gear (408) is located inside the control box (404) and is fixedly sleeved on the bottom end of the threaded rod (407) via a bolt; the top end of the threaded rod (407) is movably mounted on the bottom end of the sealing partition (401) via a bearing; the second bevel gear (408) is movably connected to the first bevel gear (406) via meshing; the slide rod (409) is movably mounted on the bottom end of the sealing partition (401) via a bearing; the second bevel gear (408) is movably connected to the first bevel gear (406) via meshing; the slide rod (411) is movably mounted on the top end of the control box (404) via a bearing; the second bevel gear (408) is movably connected to the first bevel gear (406) via meshing; the 09) is fixedly mounted on the top of the control box (404) by bolts, the top of the slide rod (409) is fixedly mounted on the bottom of the sealing partition (401) by bolts, the lifting plate (410) is movably sleeved on the threaded rod (407) by threads, the lifting plate (410) is movably sleeved on the slide rod (409) by sliding, the limiting grooves (411) are provided at both ends of the lifting plate (410), there are two limiting rails (412) and they are respectively fixedly mounted on the inner side wall of the water storage tank (1) by bolts, and the bottom ends of the limiting rails (412) are fixedly mounted on the top of the control box (404) by bolts.

4. An irrigation method for alfalfa cultivation in saline-alkali land, applicable to the irrigation device for alfalfa cultivation in saline-alkali land according to claim 3, characterized in that: The following steps are involved: S1. Insert the device into the saline-alkali land, pass irrigation water into the water storage tank (1) through the water supply pipe (2), control the second motor (503) to start through the control device (7), and drive the third bevel gear (504) to rotate through the second motor (503). When the third bevel gear (504) rotates, the first gear (505) is driven to rotate through the fourth bevel gear (506). When the first gear (505) rotates, the second gear (508) is driven to rotate, so that the crankshaft (507) rotates with the second gear (508). When the crankshaft (507) rotates, the reciprocating rod (509) drives the piston (511) to reciprocate up and down inside the suction cylinder (510); S2. When the piston (511) moves upward, the drainage one-way valve in the drainage pipe (513) closes the drainage pipe (513), while the water pumping pipe (512) is connected. At this time, the water in the irrigation cylinder (501) is pumped into the suction cylinder (510) through the water pumping pipe (512). When the piston (511) moves downward, the water pumping pipe (512) is closed due to the water inlet one-way valve in the water pumping pipe (512). At this time, the water in the suction cylinder (510) is discharged into the irrigation pipe (502) through the drainage pipe (513); S3. When the piston (511) moves downward, the anti-blocking rod (514) drives the spiral head (515) to move downward, and the limiting rod (518) is slidably connected to the rotating groove (517), so that the spiral head (515) moves downward while rotating, so that when the device is inserted into the soil, the bottom end of the irrigation pipe (502) blocked by the soil can be opened by the spiral head (515), and the soil below the bottom end of the irrigation pipe (502) is drilled out of the water seepage space by the reciprocating lifting and rotating spiral head (515), thereby further improving the irrigation effect, and the water in the suction cylinder (510) is pressurized and filled into the irrigation pipe (502) through the piston (511), and the irrigation port (516) provided on the spiral head (515) makes it easier to discharge the water in the irrigation pipe (502) while the spiral head (515) moves, thereby improving the irrigation efficiency when cultivating alfalfa in saline-alkali land; S4. In saline-alkali land, irrigation devices often need to be used for a long time. The battery (6) is charged by the solar panel (403). When it is raining, the first motor (405) is controlled by the control device (7) to start, and the first motor (405) drives the first bevel gear (406) to rotate. When the first bevel gear (406) rotates, the threaded rod (407) is driven to rotate by the second bevel gear (408). Under the limit of the slide bar (409), the limit groove (411) and the limit rail (412), the lifting plate (410) moves downward. When the lifting plate (410) moves downward, the connection The rod (413) drives the box cover (402) to rotate downward, so that the top of the water storage tank (1) is opened, thereby facilitating rainwater to enter the water storage tank (1), and collecting rainwater through the water storage tank (1). Excess rainwater in the water storage tank (1) can be recycled through the recycling pipe (3). When there is no precipitation, the first motor (405) is controlled to rotate in reverse, driving the lifting plate (410) to rise, so that the box cover (402) is connected to the sealing partition (401) to seal the top of the water storage tank (1), thereby avoiding the waste of water resources caused by the rapid evaporation of water in the water storage tank (1), and improving the utilization rate of water resources when irrigating in saline-alkali land.

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