Efficient water-saving farmland irrigation equipment

Abstract

The invention discloses efficient water-saving farmland irrigation equipment, and belongs to the technical field of irrigation equipment. Through arrangement of a quantifying mechanism and a rotating mechanism, water can be gathered on a water blocking plate after entering a drip irrigation head and push the water blocking plate, so that the water blocking plate drives a telescopic rod to move under the limitation of a mounting cavity; the telescopic rod extrudes the spring in the installation cavity and enables the spring to generate elastic deformation, meanwhile, the water blocking plate drives the spherical water blocking device to descend, when the spherical water blocking device descends and rotates, the existence time of a channel formed between the water passing groove and the water blocking plate is moderate, the flow of water flowing out of the drip irrigation head through the channel at a time is stable, and when the water is drained out of the channel, the water flowing out of the drip irrigation head is uniform. The pressure in the drip irrigation head is reduced to be balanced with the external environment, and the telescopic rod is pulled to rise under the action of elastic deformation recovery of the spring, so that the gear reciprocates at the medium-density rack and drives the spherical water stopper to rotate in a reciprocating manner; the spherical water blocking device drains water in the drip irrigation head in a reciprocating rotation and lifting mode.

Description

Technical Field

[0001] The invention relates to the technical field of irrigation equipment, and in particular to a high-efficiency water-saving farmland irrigation equipment. Background Art

[0002] Water-saving farmland is a type of farmland that aims to improve water resource utilization efficiency and reduce water resource waste. It minimizes water loss from water source to crop water consumption by adopting water conservancy, agriculture, management and other measures, and increases the output value and yield per unit of water use. It uses pipelines to transport water, which can reduce evaporation and leakage losses during the transportation process. It delivers water and fertilizer directly to the roots of crops in the form of drip irrigation, which has a very high water-saving effect. However, in actual use, in order to ensure that water and fertilizer can be transported to the farthest drip irrigation nozzle, the pressurizing equipment needs to be turned on all the time to provide pressure in the pipeline. Therefore, when the pipeline is crushed by farm tools or bitten by animals, the pressure in the pipeline will accelerate the leakage speed, resulting in a waste of water resources. In the prior art, there is a solution that uses water storage equipment and siphon principle to replace the pressurizing equipment. It is more effective when the drip irrigation nozzle is arranged closer to the water storage equipment. The water stored in the water storage equipment has its own pressure, and the water level in the water storage equipment is high. Under the action of pressure, the water is pushed to continuously flow out of the water storage equipment, thereby achieving the same effect as the pressurizing equipment. However, the pressurization effect produced by this scheme is related to the capacity of water in the water storage device. In the initial stage, the water level in the water storage device is high and the potential energy of the water is large. Under the action of gravity and pressure, the water is discharged at a faster speed, and the water output speed of the drip irrigation nozzle connected to the water storage device is also accelerated. As the water level in the water storage device drops, the potential energy gradually decreases. At the same time, the air pressure in the water storage device will gradually increase, and the water discharge speed will gradually slow down until it finally stops. The water output speed of the drip irrigation nozzle also slows down. Therefore, the drip irrigation nozzle cannot complete the drip irrigation operation with a relatively stable water output. Summary of the invention

[0003] The purpose of the present invention is to solve the problem that in the scheme of using water storage equipment and siphon principle to replace the pressurizing equipment, the pressurizing effect generated is related to the capacity of water in the water storage equipment. As the water level in the water storage equipment decreases, the water output speed of the drip irrigation nozzle also slows down, resulting in the drip irrigation nozzle being unable to complete the drip irrigation operation with a relatively stable water output. A high-efficiency water-saving farmland irrigation equipment is proposed.

[0004] In order to achieve the above purpose, the present invention adopts the following technology to provide a highly efficient water-saving farmland irrigation equipment: The irrigation equipment body includes a pressure tank, a plurality of long pipes installed at the bottom of the pressure tank, and a drip irrigation head whose water inlet end is connected to the long pipe. The water outlet end of the drip irrigation head is connected to the water inlet end of the adjacent drip irrigation head through a short pipe. A pressure mechanism is arranged inside the pressure tank. The pressure mechanism includes an inner tank installed in the pressure tank and connected to the water outlet of the pressure tank, and a water guide plate arranged in the inner tank and capable of being raised and lowered. The inner tank is used for storing water and is provided with a water channel. Water enters the inner tank through the water channel. When the inner tank stores water, the water guide plate rises. When the inner tank is full, the water guide plate descends to pressurize the water, so that the water reaches the drip irrigation head through the pipe. The drip irrigation head is provided with a quantitative mechanism, which includes a rotatable spherical water blocker and a water blocking plate nested on the surface of the spherical water blocker. A telescopic rod that is raised and lowered according to the water pressure is provided on the top of the spherical water blocker. The rotation speed of the spherical water blocker increases with the increase of water pressure. A plurality of water grooves are provided on the surface of the spherical water blocker. When the spherical water blocker rotates, channels are formed between the water grooves and the water blocking plate. When the water pressure increases, the existence time of the channels is shortened, and water flows out of the drip irrigation head through the channels.

[0005] As a further description of the above technology, a highly efficient water-saving farmland irrigation device: The pressurizing mechanism also includes a water inlet arranged on the water channel of the inner tank and an impeller rotatably arranged in the middle of the water inlet, and when water flows through the water channel, the impeller is driven to rotate and enters the inner tank through the water inlet; A threaded rod and a connecting rod are respectively provided at the bottom of the water inlet and the bottom of the impeller. A limiting ring is slidably embedded on the connecting rod. An internal threaded ring engaged with the threaded rod is provided in the middle of the limiting ring, and a water guide plate is installed on the outer wall of the limiting ring and can be deflected. The other side of the water guide plate is connected to an outer hoop that fits the inner wall of the inner tank.

[0006] As a further description of the above technology, a highly efficient water-saving farmland irrigation device: The water guide plate comprises a mounting seat mounted on a limiting collar and a positioning groove provided in the mounting seat, a mounting rod is rotatably provided in the mounting seat, a directional block is slidably embedded in the positioning groove is provided on the mounting rod, a torsion spring is also wound around the surface of the mounting rod, and two ends of the torsion spring are respectively connected to the mounting rod and the inner wall of the mounting seat; A baffle is installed on the installation rod, and the other end of the baffle is rotatably installed on the outer hoop.

[0007] As a further description of the above technology, a highly efficient water-saving farmland irrigation device: An adjustment mechanism is arranged between the pressurized tank and the inner tank, and the adjustment mechanism includes a turntable rotatably arranged on the pressurized tank, a handle installed on the turntable and an engaging groove opened on the top of the impeller, an engaging rod is arranged through the middle of the turntable, and the engaging rod passes through the inner tank and is inserted into the engaging groove.

[0008] As a further description of the above technology, a highly efficient water-saving farmland irrigation device: A countersunk hole is provided at the top of the engaging rod, an insert block is slidably arranged in the countersunk hole, and a rotating protrusion is rotatably arranged between the two insert blocks; Slots which are engaged with the inserting blocks are provided on both sides of the inner wall of the rotating disk.

[0009] As a further description of the above technology, a highly efficient water-saving farmland irrigation device: The quantitative mechanism also includes an installation cavity arranged in the middle of the drip irrigation head, a telescopic rod is arranged through the middle of the installation cavity and a spring is wound on the surface, and two ends of the spring are respectively in contact with the installation cavity and the inner wall of the spring; A mounting hoop is provided at the bottom of the telescopic rod, and a rotating cavity for the mounting hoop to be nested is provided on the surface of the spherical water blocker; A liquid discharge mechanism is provided through the telescopic rod and the top of the spring.

[0010] As a further description of the above technology, a highly efficient water-saving farmland irrigation device: The spherical water blocker is rotated by a rotating mechanism, and the rotating mechanism includes a plurality of slide rails arranged on the inner wall of the drip irrigation head, and the inner wall of the slide rail is arranged with multi-density racks, and the multi-density racks include a high-density rack, a medium-density rack and a low-density rack from top to bottom; The spherical water blocker is provided with rotating rods at both ends, and slots cooperating with the slide rails are provided on both sides of the water blocker. Slide blocks slidably embedded in the slide rails are provided in the slots. The rotating rod passes through the water blocker and the slide block, and a gear meshing with the multi-density rack is installed at the end.

[0011] As a further description of the above technology, a highly efficient water-saving farmland irrigation device: The plurality of drainage mechanisms include a slot in the middle of the telescopic rod and a knob penetrating the top of the drip irrigation head, a plug rod that can be inserted into the slot is installed on the knob, and a plurality of blocks are arranged on the outer wall of the plug rod; The card slot includes a cylindrical slot that cooperates with the insertion rod, a straight slot that cooperates with the card block and an arc slot that is opened on the inner wall of the cylindrical slot. Under the guidance of the cylindrical slot, the insertion rod can drive the card block to move out of the straight slot and rotate to embed into the arc slot, and the telescopic rod is actively lifted and lowered by the insertion rod.

[0012] As a further description of the above technology, a highly efficient water-saving farmland irrigation device: The drip irrigation head is provided with a water diversion mechanism for guiding water flow, the water diversion mechanism comprises a curved plate arranged in the middle of the drip irrigation head and penetrated by the insertion rod, the curved plate comprises a slope surface close to the water inlet end of the drip irrigation head and a plane located at the end of the slope surface, a through hole is opened at the end of the plane, and an arc plate is provided at the water outlet end of the drip irrigation head, and the arc plate is located below the through hole.

[0013] As a further description of the above technology, a highly efficient water-saving farmland irrigation device: A cover plate for forcing water to flow back is arranged at the water outlet end of the last drip irrigation head, and the backflowing water is firstly injected into the last drip irrigation head under the guidance of the arc plate.

[0014] In summary, due to the use of the above-mentioned technology, a highly efficient water-saving farmland irrigation device has the following beneficial effects: 1. Through the set pressurizing mechanism, after the water flows into the impact impeller, the impeller can drive the threaded rod to rotate under the restriction of the water inlet. Since the connecting rod limits the position of the limiting collar, the threaded rod cannot drive the internal threaded collar to rotate. The internal threaded collar can only drive the limiting collar to rise under the restriction of the connecting rod. The limiting collar drives the water guide plate and the outer hoop to rise inside the inner tank until the inner tank is filled with water. At this time, the water guide plate is above the horizontal plane. When the water injection into the inner tank is stopped and the water is introduced into the drip irrigation head through the pipe, the water guide plate descends under the action of gravity and provides additional pressure to the water surface, so as to achieve the purpose of stabilizing the water outlet speed of the inner tank when the water volume in the inner tank is reduced. When water is injected, the baffle rotates and a gap is generated to avoid blocking water from entering the inner tank. When water injection is stopped, multiple baffles are reset and closed, and merged into a plane, so as to increase the contact area with the water surface and improve the pressurization effect. 2. Through the set quantitative mechanism and rotating mechanism, water will gather on the water blocking plate after entering the drip irrigation head and push the water blocking plate, so that the water blocking plate drives the telescopic rod to move under the restriction of the installation cavity, and the telescopic rod squeezes the spring in the installation cavity and causes it to produce elastic deformation. At the same time, the water blocking plate drives the spherical water blocker to descend. When the spherical water blocker descends and rotates, the existence time of the channel formed between the water trough and the water blocking plate is moderate. The flow rate of water flowing out of the drip irrigation head through the channel is stable. When the water is discharged from the channel, the pressure in the drip irrigation head is reduced to balance with the external environment. Under the action of the recovery of the elastic deformation of the spring, the telescopic rod is pulled up. Therefore, the gear will reciprocate at the medium-density rack and drive the spherical water blocker to reciprocate. Under the condition of constant pressure, the spherical water blocker will drain water in the drip irrigation head by reciprocating rotation and lifting. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 A schematic diagram of the three-dimensional structure of a highly efficient water-saving farm irrigation device is shown; Figure 2 Shows Figure 1 A schematic diagram of the enlarged structure at A in the middle; Figure 3 It shows a schematic diagram of the front cross-sectional structure and flow direction of a highly efficient water-saving farm irrigation device; Figure 4 Shows Figure 3 A schematic diagram of the enlarged structure at B in the middle; Figure 5 Shows Figure 3 Schematic diagram of the enlarged structure at C in the middle; Figure 6 A schematic diagram of a three-dimensional cross-sectional structure of a pressurizing mechanism is shown; Figure 7 Shows Figure 6 Schematic diagram of the enlarged structure at D in the middle; Figure 8 The schematic diagram of the state when the water guide plate is lowered and the schematic diagram of the flow direction are shown; Fig. 9 The schematic diagram of the state when the water diversion plate rises and the schematic diagram of the flow direction are shown; Fig.10 A schematic diagram of the three-dimensional cross-sectional structure of the drip irrigation head and the quantitative mechanism is shown; Fig.11 A front cross-sectional structural schematic diagram and a flow direction schematic diagram showing a plurality of drip irrigation heads in connection state; Fig.12 A partial three-dimensional structural schematic diagram of the quantitative mechanism and the rotating mechanism is shown; Fig.13 A partial three-dimensional cross-sectional structural schematic diagram of the rotating mechanism is shown; Fig.14 A schematic diagram of a partial three-dimensional split state of the quantitative mechanism and the liquid discharge mechanism is shown; Fig.15 A schematic diagram of the three-dimensional structure of the liquid discharge mechanism is shown; Fig.16 A schematic diagram showing the splitting state of the refined slices is shown.

[0016] Legend: 10. Irrigation equipment body; 11. Pressurized tank; 12. Pipeline; 13. Drip irrigation head; 131. Thinning sheet; 20. Pressurizing mechanism; 21. Inner tank; 22. Water inlet; 23. Impeller; 24. Threaded rod; 25. Connecting rod; 26. Limiting collar; 27. Internal threaded collar; 28. Water guide plate; 281. Mounting seat; 282. Positioning groove; 283. Mounting rod; 284. Torsion spring; 285. Orienting block; 286. Baffle; 29. ​​External hoop; 30. Adjustment mechanism; 31. Turntable; 311. Slot; 32. Engagement rod; 321. Countersunk hole; 322. Rotating convex block; 323. Insert block; 33. Engagement groove; 34. Handle; 40. quantitative mechanism; 41. spherical water blocker; 411. water channel; 412. rotating chamber; 42. water blocker plate; 43. telescopic rod; 431. mounting hoop; 44. mounting chamber; 45. spring; 50. Discharge mechanism; 51. Turning knob; 52. Insertion rod; 53. Block; 54. Slot 60. Rotating mechanism; 61. Slide rail; 62. Multi-density rack; 621. High-density rack; 622. Medium-density rack; 623. Low-density rack; 63. Sliding block; 64. Rotating rod; 65. Gear; 70. Water diversion mechanism; 71. Curved plate; 72. Through hole; 73. Arc plate. DETAILED DESCRIPTION

[0017] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technology in the embodiments of the present invention, a highly efficient water-saving farm irrigation device. 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.

[0018] In order to solve the problem that in the scheme of using water storage equipment and siphon principle to replace the pressurizing equipment, the pressurizing effect generated is related to the capacity of water in the water storage equipment. As the water level in the water storage equipment decreases, the water output speed of the drip irrigation nozzle also slows down, resulting in the drip irrigation nozzle being unable to complete the drip irrigation operation with a relatively stable water output, the present invention proposes a high-efficiency water-saving farmland irrigation equipment, such as Figure 1 - Fig.16 As shown: The irrigation device body 10 includes a pressure tank 11, a plurality of pipes 12 installed at the bottom of the pressure tank 11, and a drip irrigation head 13 whose water inlet end is connected to the pipe 12. The water outlet of the drip irrigation head 13 is connected to the water inlet end of the adjacent drip irrigation head 13 through the pipe 12. A valve (not shown in the figure) for controlling the opening and closing of irrigation is installed between the pressure tank 11 and the pipe 12. A pressure mechanism 20 is arranged inside the pressure tank 11. The pressure mechanism 20 includes a pressure relief valve installed at the pressure tank 11. An inner tank 21 in the pressure tank 11 and connected to the water outlet of the pressurized tank 11 and a water guide plate 28 disposed in the inner tank 21 and capable of being raised and lowered. The inner tank 21 is used for storing water and is provided with a waterway. Water enters the inner tank 21 through the waterway. When the inner tank 21 stores water, the water guide plate 28 rises. When the inner tank 21 is full, the water guide plate 28 descends to pressurize the water, so that the water reaches the drip irrigation head 13 through the pipe 12. The bottom of the drip irrigation head 13 is configured to be detachable and is provided with a thinning sheet 131 to prevent foreign matter from entering. like Figure 3 , Figure 6 and Figure 7 As shown, the pressurizing mechanism 20 also includes a water inlet 22 disposed on the water channel of the inner tank 21 and an impeller 23 rotatably disposed in the middle of the water inlet 22. When water flows through the water channel, the impeller 23 is driven to rotate and enters the inner tank 21 through the water inlet 22; A threaded rod 24 and a connecting rod 25 are respectively provided at the bottom of the water inlet 22 and the bottom of the impeller 23. A limiting collar 26 is slidably embedded on the connecting rod 25. An internal threaded collar 27 meshing with the threaded rod 24 is provided in the middle of the limiting collar 26. A water guide plate 28 is installed on the outer wall of the limiting collar 26. The water guide plate 28 can rotate. The other side of the water guide plate 28 is connected to an outer hoop 29 that fits the inner wall of the inner tank 21. As the water flows into and impacts the impeller 23, the impeller 23 can drive the threaded rod 24 to rotate under the restriction of the water inlet 22. Since the connecting rod 25 restricts the position of the limiting collar 26, the threaded rod 24 cannot drive the internal threaded collar 27 to rotate. The internal threaded collar 27 can only drive the limiting collar 26 to rise under the restriction of the connecting rod 25. The limiting collar 26 drives the water guide plate 28 and the outer hoop 29 to rise inside the inner liner 21 until the inner liner 21 is filled with water. At this time, the water guide plate 28 is located above the horizontal plane. When the water injection into the inner liner 21 is stopped and the water is introduced into the drip irrigation head 13 through the pipe 12, the water guide plate 28 descends under the action of gravity and provides additional pressure to the water surface, so as to achieve the goal of stabilizing the water outlet speed of the inner liner 21 when the water amount in the inner liner 21 decreases.

[0019] The water guide plate 28 includes a mounting seat 281 mounted on the limiting collar 26 and a positioning groove 282 provided in the mounting seat 281. Figure 5 , Figure 8 and Fig. 9 As shown, a mounting rod 283 is rotatably arranged in the mounting seat 281, and a directional block 285 is slidably embedded in the positioning groove 282 on the mounting rod 283. A torsion spring 284 is also wound around the surface of the mounting rod 283, and the two ends of the torsion spring 284 are respectively connected to the mounting rod 283 and the inner wall of the mounting seat 281; A baffle plate 286 is mounted on the mounting rod 283, and the other end of the baffle plate 286 is rotatably mounted on the outer hoop 29; With this design, when water enters the inner tank 21 through the water inlet 22, the water will directly impact the baffle 286 under the action of gravity. The baffle 286 drives the mounting rod 283 to rotate inside the mounting seat 281 under the impact of water. At the same time, the directional block 285 can only rotate to one side under the restriction of the positioning groove 282, and the maximum rotation angle is 60 degrees. During the rotation process, the mounting rod 283 cooperates with the mounting seat 281 to pull the torsion spring 284 to elastically deform. After the water injection is completed, the torsion spring 284 elastically recovers and pulls the baffle 286 to rotate and reset, so that the baffle 286 is horizontally attached to the water surface, so that when water is injected, the baffle 286 rotates and generates a gap to avoid blocking water from entering the inner tank 21. When the water injection is stopped, multiple baffles 286 are reset and closed, and merged into a plane, thereby achieving the purpose of increasing the contact area with the water surface and improving the pressurization effect.

[0020] When the water pressure injected into the inner tank 21 is too low to effectively drive the impeller 23 to rotate, the impeller 23 can also be manually rotated by the adjustment mechanism 30, such as Figure 2 and Figure 6 As shown, an adjustment mechanism 30 is provided between the pressurized tank 11 and the inner liner 21, and the adjustment mechanism 30 includes a turntable 31 rotatably provided on the pressurized tank 11, a handle 34 installed on the turntable 31, and an engaging groove 33 provided on the top of the impeller 23, and an engaging rod 32 is provided through the middle of the turntable 31, and the engaging rod 32 passes through the inner liner 21 and is inserted into the engaging groove 33; By rotating the handle 34, the handle 34 drives the turntable 31 to rotate under the restriction of the pressurized tank 11, and the turntable 31 drives the impeller 23 to actively rotate through the interlocking rod 32 and the interlocking groove 33 to adjust the height of the water guide plate 28; A countersunk hole 321 is formed at the top of the engaging rod 32, an insert block 323 is slidably disposed in the countersunk hole 321, and a rotating protrusion 322 is rotatably disposed between the two insert blocks 323; Slots 311 are provided on both sides of the inner wall of the rotating disk 31 to engage with the insert blocks 323; When the water pressure injected into the inner tank 21 is sufficient to drive the impeller 23 to rotate, the connection between the rotating disk 31 and the interlocking rod 32 can be released. By rotating the rotating protrusion 322, the rotating protrusion 322 no longer drives the plug block 323 to be interlocked in the slot 311. The two plug blocks 323 can be moved and received in the counterbore 321. The connection between the interlocking rod 32 and the rotating disk 31 is released. When the impeller 23 rotates, the rotating disk 31 will not be driven to rotate by the interlocking rod 32, thereby preventing the adjustment mechanism 30 from affecting the smoothness and stability of the rotation of the impeller 23. The reverse operation causes the rotating protrusion 322 to push the inserting block 323 to be inserted into the slot 311 , thereby manually driving the impeller 23 to rotate.

[0021] In order to ensure that the water output of the drip irrigation head 13 does not change significantly under different water pressures, Figure 10-Figure 14 As shown, a quantitative mechanism 40 is provided in the drip irrigation head 13, and the quantitative mechanism 40 includes a rotatable spherical water blocker 41 and a water blocking plate 42 nested on the surface of the spherical water blocker 41. A telescopic rod 43 is provided on the top of the spherical water blocker 41, which is raised and lowered according to the water pressure. The rotation speed of the spherical water blocker 41 increases with the increase of water pressure. A plurality of water grooves 411 are provided on the surface of the spherical water blocker 41. When the spherical water blocker 41 rotates, a channel is formed between the water grooves 411 and the water blocking plate 42. When the water pressure increases, the existence time of the channel is shortened, and water flows out of the drip irrigation head 13 through the channel. The quantitative mechanism 40 further includes a mounting cavity 44 disposed in the middle of the drip irrigation head 13, a telescopic rod 43 is disposed through the middle of the mounting cavity 44 and a spring 45 is wound around the surface thereof, and two ends of the spring 45 are respectively in contact with the inner walls of the mounting cavity 44 and the spring 45; A mounting hoop 431 is provided at the bottom of the telescopic rod 43, and a rotation cavity 412 for the mounting hoop 431 to be nested is provided on the surface of the spherical water blocker 41. The spherical water blocker 41 can rotate under the restriction of the mounting hoop 431 through the rotation cavity 412; After entering the drip irrigation head 13, water will gather on the water blocking plate 42 and push the water blocking plate 42, so that the water blocking plate 42 drives the telescopic rod 43 to move within the limit of the installation cavity 44, and the telescopic rod 43 squeezes the spring 45 in the installation cavity 44 and causes it to produce elastic deformation, and at the same time, the water blocking plate 42 drives the spherical water blocker 41 to descend; The spherical water stopper 41 is rotated by the rotating mechanism 60. Fig.12 and Fig.13 As shown, the rotating mechanism 60 includes a plurality of slide rails 61 arranged on the inner wall of the drip irrigation head 13, and the inner wall of the slide rail 61 is arranged with multi-density racks 62, and the multi-density racks 62 include a high-density rack 621, a medium-density rack 622 and a low-density rack 623 from top to bottom; The spherical water blocker 41 is provided with a rotating rod 64 at both ends, and the water blocking plate 42 is provided with slots on both sides thereof to match the slide rail 61. The slots are provided with a slider 63 which can be slidably embedded in the slide rail 61. The rotating rod 64 passes through the water blocking plate 42 and the slider 63, and a gear 65 which meshes with the multi-density rack 62 is installed at the end thereof. When the spherical water blocker 41 and the water blocker plate 42 descend, the water blocker plate 42 drives the slider 63 to slide under the restriction of the slide rail 61, and at the same time, the spherical water blocker 41 drives the gear 65 to move inside the slide rail 61 through the rotating rod 64; When the water pressure is moderate, the gear 65 moves to the medium-density rack 622, and the tooth density of the medium-density rack 622 is moderate. Therefore, under the cooperation of the medium-density rack 622 and the gear 65, the rotation speed of the spherical water blocker 41 is moderate, and the existence time of the channel formed between the water channel 411 and the water blocking plate 42 when the spherical water blocker 41 rotates is moderate, and the flow rate of water flowing out of the drip irrigation head 13 through the channel once is stable; When water is discharged from the channel, the pressure in the drip irrigation head 13 decreases, and the elastic deformation recovery of the spring 45 pulls the telescopic rod 43 upward, so the gear 65 will reciprocate at the medium-density rack 622 and drive the spherical water blocker 41 to reciprocate. Under the condition of constant pressure, the spherical water blocker 41 will drain water in the drip irrigation head 13 by reciprocating rotation and lifting. When the water pressure is high, the gear 65 will move to the small-density rack 623. Since the tooth density of the small-density rack 623 is the highest, the rotation speed of the spherical water blocker 41 is the fastest at this time. When the spherical water blocker 41 rotates, the existence time of the channel formed between the water groove 411 and the water blocking plate 42 is the shortest, and the flow rate of water flowing out of the drip irrigation head 13 through the channel in a single time is the lowest. However, since the rotation speed of the spherical water blocker 41 is relatively fast, the interval between the channel formed between the water groove 411 and the water blocking plate 42 is the shortest, so the total amount of water actually discharged is similar to that when the water pressure is moderate. When the water pressure is low, the gear 65 will move to the high-density rack 621. Since the high-density rack 621 has the lowest tooth density, the rotation speed of the spherical water blocker 41 is the slowest at this time. When the spherical water blocker 41 rotates, the channel formed between the water channel 411 and the water blocking plate 42 exists for the longest time, and the flow rate of water flowing out of the drip irrigation head 13 through the channel in a single time is the highest, so that the water output in the low water pressure state is increased while still being able to close the drip irrigation head 13 through the spherical water blocker 41 after stopping the water injection; Through the above scheme, the purpose of adjusting the water outlet mode of the drip irrigation head 13 under different water pressures is achieved to ensure that the water outlet of the drip irrigation head 13 does not change significantly, thereby improving the irrigation effect.

[0022] During drip irrigation, the drip irrigation head 13 needs to be regularly inspected and maintained. Before maintenance, the remaining water in the drip irrigation head 13 needs to be drained. Fig.12 , Fig.14 and Fig.15 As shown, a liquid discharge mechanism 50 is provided through the top of the telescopic rod 43 and the spring 45; The plurality of liquid discharge mechanisms 50 include a slot 54 provided in the middle of the telescopic rod 43 and a knob 51 penetrating the top of the drip irrigation head 13. The knob 51 is provided with an insertion rod 52 which can be inserted into the slot 54. The outer wall of the insertion rod 52 is provided with a plurality of blocks 53. The clamping groove 54 includes a cylindrical groove matched with the insertion rod 52, a straight groove formed on the inner wall of the cylindrical groove and matched with the clamping block 53, and an arc groove formed at the top end of the straight groove; By pulling the insertion rod 52, the insertion rod 52 drives the block 53 to move in the straight groove under the guidance of the cylindrical groove. After the block 53 moves to the end of the straight groove, the insertion rod 52 is rotated again, so that the insertion rod 52 drives the block 53 to rotate and embed into the arc groove, and then the insertion rod 52 is pushed to make the insertion rod 52 abut against the arc groove and push the telescopic rod 43, so that the telescopic rod 43 can actively drive the spherical water stopper 41 and the water blocking plate 42 to descend. After the spherical water stopper 41 rotates to a suitable state, the pushing stops. At this time, a channel is formed between the water trough 411 and the water blocking plate 42 and remains in an open state, thereby achieving the purpose of discharging the liquid retained in the drip irrigation head 13.

[0023] In order to allow the drip irrigation head 13 at the end to be filled with water first and prevent fertilizer from accumulating inside the pipe 12 and the drip irrigation head 13 and causing blockage, Fig.11 As shown, a water diversion mechanism 70 for guiding water flow is provided inside the drip irrigation head 13, and the water diversion mechanism 70 includes a curved plate 71 provided in the middle of the drip irrigation head 13 and penetrated by the insertion rod 52, and the curved plate 71 includes a slope surface close to the water inlet end of the drip irrigation head 13 and a plane located at the end of the slope surface, and a through hole 72 is opened at the end of the plane, and an arc plate 73 is provided at the water outlet end of the drip irrigation head 13, and the arc plate 73 is located below the through hole 72; After entering the pipe 12 and the drip irrigation head 13, the water first contacts the slope of the curved plate 71, so that it cannot be directly injected into the drip irrigation head 13. Under the guidance of the slope of the curved plate 71, the water reaches the plane, and a small part of the water enters the drip irrigation head 13 through the through hole 72. Most of the water is injected into the pipe 12 connected by the two drip irrigation heads 13 through the through hole 72, and accelerates through the pipe 12 to the next drip irrigation head 13 under the action of gravity. The undulating curved plate 71 and the arc plate 73 change the flow pattern of water in the pipe 12 and the drip irrigation head 13, which helps to reduce the accumulation of sediment at the bottom of the pipe 12 and the drip irrigation head 13, thereby achieving the effect of keeping it unobstructed; A cover plate for forcing water to flow back is provided at the water outlet of the last drip irrigation head 13. The backflowing water is first injected into the last drip irrigation head 13 under the guidance of the arc plate 73, thereby avoiding the problem that the last drip irrigation head 13 cannot be injected with sufficient water due to insufficient water pressure. After the last drip irrigation head 13 is filled, a blocking effect similar to that of the cover plate is formed, so that the other drip irrigation head 13 closest to the last drip irrigation head 13 is filled with water first, until the drip irrigation head 13 closest to the pressure tank 11 is filled with water.

[0024] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field within the technical scope disclosed by the present invention can make equivalent replacements or changes to the high-efficiency water-saving farm irrigation equipment and its inventive concept according to the technology of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A highly efficient water-saving farm irrigation device, comprising an irrigation device body (10), the irrigation device body (10) comprising a pressure tank (11), a plurality of long pipes (12) installed at the bottom of the pressure tank (11), and a drip irrigation head (13) whose water inlet end is connected to the long pipe (12), the water outlet end of the drip irrigation head (13) being connected to the water inlet end of an adjacent drip irrigation head (13) through a short pipe (12), characterized in that: The pressurizing tank (11) is provided with a pressurizing mechanism (20) therein. The pressurizing mechanism (20) comprises an inner tank (21) installed in the pressurizing tank (11) and connected to a water outlet of the pressurizing tank (11), and a water guide plate (28) arranged in the inner tank (21) and capable of being raised and lowered. The inner tank (21) is used to store water and is provided with a water channel. Water enters the inner tank (21) through the water channel. When the inner tank (21) stores water, the water guide plate (28) rises. When the inner tank (21) is full, the water guide plate (28) descends to apply pressure to the water, so that the water passes through the pipe (12) and reaches the drip irrigation head (13); The drip irrigation head (13) is provided with a quantitative mechanism (40), the quantitative mechanism (40) comprising a rotatable spherical water blocker (41) and a water blocking plate (42) nested on the surface of the spherical water blocker (41), a telescopic rod (43) that is raised and lowered according to the water pressure is provided on the top of the spherical water blocker (41), and the rotation speed of the spherical water blocker (41) increases with the increase of the water pressure; The spherical water blocker (41) is rotated by a rotating mechanism (60), the rotating mechanism (60) comprising a plurality of slide rails (61) arranged on the inner wall of the drip irrigation head (13), the inner wall of the slide rail (61) being provided with multi-density racks (62), the multi-density racks (62) comprising, from top to bottom, a high-density rack (621), a medium-density rack (622), and a low-density rack (623); The spherical water blocker (41) is provided with a rotating rod (64) at both ends, and grooves cooperating with the slide rail (61) are provided on both sides of the water blocker plate (42), and a slider (63) slidably embedded in the slide rail (61) is provided in the groove, and the rotating rod (64) passes through the water blocker plate (42) and the slider (63), and a gear (65) meshing with the multi-density rack (62) is installed at the end thereof; A plurality of water grooves (411) are provided on the surface of the spherical water blocker (41); when the spherical water blocker (41) rotates, channels are formed between the water grooves (411) and the water blocking plate (42); when the water pressure increases, the existence time of the channels is shortened, and water flows out of the drip irrigation head (13) through the channels.

2. The high-efficiency water-saving farmland irrigation equipment according to claim 1, characterized in that: The pressurizing mechanism (20) further comprises a water inlet (22) arranged on the water channel of the inner tank (21) and an impeller (23) rotatably arranged in the middle of the water inlet (22), and water flows through the water channel to drive the impeller (23) to rotate and enter the inner tank (21) through the water inlet (22); The bottom of the water inlet (22) and the bottom of the impeller (23) are respectively provided with a threaded rod (24) and a connecting rod (25); a limiting collar (26) is slidably embedded on the connecting rod (25); an internally threaded collar (27) meshing with the threaded rod (24) is provided in the middle of the limiting collar (26); a water guide plate (28) is mounted on the outer wall of the limiting collar (26) and is capable of deflection; and an outer hoop (29) that fits the inner wall of the inner liner (21) is connected to the other side of the water guide plate (28).

3. The high-efficiency water-saving farmland irrigation equipment according to claim 2, characterized in that: The water guide plate (28) comprises a mounting seat (281) mounted on the limiting collar (26) and a positioning groove (282) provided in the mounting seat (281); a mounting rod (283) is rotatably provided in the mounting seat (281); a directional block (285) is provided on the mounting rod (283) and is slidably embedded in the positioning groove (282); a torsion spring (284) is also wound around the surface of the mounting rod (283); and two ends of the torsion spring (284) are respectively connected to the mounting rod (283) and the inner wall of the mounting seat (281); A baffle (286) is mounted on the mounting rod (283), and the other end of the baffle (286) is rotatably mounted on the outer hoop (29).

4. The high-efficiency water-saving farmland irrigation equipment according to claim 1, characterized in that: An adjustment mechanism (30) is provided between the pressurized tank (11) and the inner container (21), the adjustment mechanism (30) comprising a turntable (31) rotatably provided on the pressurized tank (11), a handle (34) mounted on the turntable (31), and an engaging groove (33) provided on the top of the impeller (23); an engaging rod (32) is provided through the middle of the turntable (31), and the engaging rod (32) passes through the inner container (21) and is inserted into the engaging groove (33).

5. The high-efficiency water-saving farmland irrigation equipment according to claim 4, characterized in that: The top of the engaging rod (32) is provided with a countersunk hole (321), an insert block (323) is slidably arranged in the countersunk hole (321), and a rotating protrusion (322) is rotatably arranged between the two insert blocks (323); Slots (311) that engage with the insert blocks (323) are provided on both sides of the inner wall of the rotating disk (31).

6. The high-efficiency water-saving farmland irrigation equipment according to claim 1, characterized in that: The quantitative mechanism (40) further comprises a mounting cavity (44) arranged in the middle of the drip irrigation head (13); the telescopic rod (43) is arranged through the middle of the mounting cavity (44) and has a spring (45) wound around its surface; and the two ends of the spring (45) are respectively in contact with the inner wall of the mounting cavity (44) and the spring (45); A mounting hoop (431) is provided at the bottom of the telescopic rod (43), and a rotating cavity (412) for the mounting hoop (431) to be nested is provided on the surface of the spherical water blocker (41); A liquid discharge mechanism (50) is provided through the top of the telescopic rod (43) and the spring (45).

7. The high-efficiency water-saving farmland irrigation equipment according to claim 6, characterized in that: The plurality of liquid discharge mechanisms (50) comprise a slot (54) provided in the middle of the telescopic rod (43) and a knob (51) penetrating the top of the drip irrigation head (13); an insertion rod (52) which can be inserted into the slot (54) is mounted on the knob (51); and a plurality of blocks (53) are provided on the outer wall of the insertion rod (52); The clamping groove (54) comprises a cylindrical groove cooperating with the insertion rod (52), a straight groove formed on the inner wall of the cylindrical groove cooperating with the clamping block (53), and an arc groove formed at the top end of the straight groove. The insertion rod (52) can drive the clamping block (53) to move out of the straight groove and rotate to embed into the arc groove under the guidance of the cylindrical groove, and the telescopic rod (43) is actively lifted or lowered by the insertion rod (52).

8. The high-efficiency water-saving farmland irrigation equipment according to claim 6, characterized in that: The drip irrigation head (13) is provided with a water diversion mechanism (70) for guiding water flow. The water diversion mechanism (70) comprises a curved plate (71) arranged in the middle of the drip irrigation head (13) and penetrated by the insertion rod (52). The curved plate (71) comprises a slope surface close to the water inlet end of the drip irrigation head (13) and a plane located at the end of the slope surface. A through hole (72) is provided at the end of the plane. An arc plate (73) is provided at the water outlet end of the drip irrigation head (13), and the arc plate (73) is located below the through hole (72).

9. The high-efficiency water-saving farmland irrigation equipment according to claim 8, characterized in that: A cover plate for forcing water to flow back is provided at the water outlet end of the last drip irrigation head (13), and the backflowing water is first injected into the last drip irrigation head (13) under the guidance of the arc plate (73).

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