High-efficiency water-saving farmland irrigation equipment

Abstract

The application discloses a kind of efficient water-saving farmland irrigation equipment, belongs to irrigation equipment technical field, by being set quantitative mechanism and rotating mechanism, water is gathered on water baffle after entering drip irrigation head and promotes water baffle, makes water baffle drive telescopic link move under the restriction of installation cavity, telescopic link extrudes spring in installation cavity and makes it produce elastic deformation, water baffle drives spherical water stop to drop simultaneously, the existence time of channel formed between water channel and water baffle when spherical water stop drops and rotates is moderate, the flow of water single pass channel from drip irrigation head is stable, when water is discharged from channel, the pressure in drip irrigation head reduces to balance with external environment, under the action of spring elastic deformation recovery, telescopic link is pulled up, therefore gear will reciprocate at medium density rack, and drive spherical water stop reciprocating rotation, under the condition that pressure does not change, spherical water stop will be drained in drip irrigation head by reciprocating rotation and lifting mode.

Description

Technical Field

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

[0002] Water-saving farmland is a type of farmland designed to improve water resource utilization efficiency and reduce water waste. By adopting water conservancy, agricultural and management measures, it minimizes water loss from water source to crop consumption, increases output value and yield per unit of water consumption, reduces evaporation and seepage losses during water transport by using pipelines, and delivers water and fertilizer directly to the roots of crops in the form of drip irrigation, which has a very high water-saving effect.

[0003] However, in actual use, in order to ensure that water and fertilizer can be transported to the farthest drip irrigation head, the pressurization equipment needs to be turned on at all times to provide pressure to the pipeline. Therefore, when the pipeline is damaged by farm tools or bitten by animals, the pressure inside the pipeline will accelerate the leakage rate, resulting in water waste.

[0004] Existing technologies include solutions that use water storage devices and siphon principles to replace pressurization devices. This is more effective when the drip irrigation nozzles are placed close to the water storage device. The water stored in the water storage device has its own pressure, and the water level in the water storage device is high. Under the action of pressure, water is continuously pushed out of the water storage device, thereby achieving the same effect as pressurization devices.

[0005] However, the pressurization effect produced by this scheme is related to the water capacity in the water storage equipment. In the initial stage, the water level in the water storage equipment is high, the potential energy of the water is large, and the water discharge speed is fast under the action of gravity and pressure. The water output speed of the drip irrigation nozzles connected to the water storage equipment also increases accordingly. As the water level in the water storage equipment decreases, the potential energy gradually decreases, and the air pressure in the water storage equipment gradually increases. The water discharge speed gradually slows down until it eventually stops, and the water output speed of the drip irrigation nozzles also slows down. Therefore, the drip irrigation nozzles cannot complete the drip irrigation operation with a relatively stable water output. Summary of the Invention

[0006] The purpose of this invention is to address the problem that in solutions using water storage devices and siphon principles to replace pressurization devices, the pressurization effect is related to the water volume in the storage device. As the water level in the storage device decreases, the water output speed of the drip irrigation nozzles also slows down, causing the drip irrigation nozzles to be unable to complete drip irrigation operations with a relatively stable water output. Therefore, this invention proposes a high-efficiency water-saving farmland irrigation device.

[0007] To achieve the above objectives, the present invention employs the following technology: a high-efficiency water-saving farmland irrigation device.

[0008] The irrigation equipment includes a main body, which comprises a pressure tank, several long pipes installed at the bottom of the pressure tank, and drip irrigation heads whose inlets are connected to the long pipes. The outlet of each drip irrigation head is connected to the inlet of an adjacent drip irrigation head via a short pipe. The pressure tank is equipped with a pressurizing mechanism, which includes an inner tank installed inside the pressure tank and connected to the outlet of the pressure tank, and a water inlet plate installed inside the inner tank that can be raised and lowered. The inner tank is used for storing water and is equipped with water channels. Water enters the inner tank through the water channels. When the inner tank is filled with water, the water inlet plate rises. When the inner tank is full, the water inlet plate descends to pressurize the water, so that the water reaches the drip irrigation head through the pipes.

[0009] The drip head is equipped with a metering mechanism, which includes a rotatable spherical water blocker and a water-blocking plate nested on the surface of the spherical water blocker. The top of the spherical water blocker is equipped with a telescopic rod that rises and falls with the water pressure. The rotation speed of the spherical water blocker increases with the increase of water pressure.

[0010] The spherical water blocker has several water channels on its surface. When the spherical water blocker rotates, a channel is formed between the water channels and the water blocking plate. When the water pressure increases, the existence time of the channel is shortened, and water flows out from the drip head through the channel.

[0011] Further description of a high-efficiency water-saving farmland irrigation device as described above:

[0012] The pressurizing mechanism also includes a water inlet provided on the inner tank water channel and an impeller rotatably provided in the middle of the water inlet. When water flows through the water channel, it drives the impeller to rotate and enters the inner tank through the water inlet.

[0013] The bottom of the inlet and the bottom of the impeller are respectively provided with a threaded rod and a connecting rod. A limiting collar is slidably embedded on the connecting rod. An internal threaded collar that meshes with the threaded rod is provided in the middle of the limiting collar. The water guide plate is installed on the outer wall of the limiting collar and can deflect. An outer hoop that fits against the inner wall of the inner tank is connected to the other side of the water guide plate.

[0014] Further description of a high-efficiency water-saving farmland irrigation device as described above:

[0015] The water-guiding plate includes a mounting seat installed on a limiting collar and a positioning groove opened in the mounting seat. A mounting rod is rotatably installed in the mounting seat. An directional block is slidably embedded in the positioning groove on the mounting rod. A torsion spring is also wound around the surface of the mounting rod. The two ends of the torsion spring are respectively connected to the mounting rod and the inner wall of the mounting seat.

[0016] A baffle is installed on the mounting rod, and the other end of the baffle is rotatably mounted on the outer hoop.

[0017] Further description of a high-efficiency water-saving farmland irrigation device as described above:

[0018] An adjustment mechanism is provided between the pressure tank and the inner liner. The adjustment mechanism includes a turntable that is rotated on the pressure tank, a handle installed on the turntable, and a fitting groove opened on the top of the impeller. A fitting rod is provided through the middle of the turntable, and the fitting rod passes through the inner liner and is inserted into the fitting groove.

[0019] Further description of a high-efficiency water-saving farmland irrigation device as described above:

[0020] The top of the fitting rod is provided with a countersunk hole, and an insert block is slidably disposed in the countersunk hole. A rotating protrusion is rotatably disposed between the two insert blocks.

[0021] The inner wall of the turntable has slots on both sides that fit into the insert blocks.

[0022] Further description of a high-efficiency water-saving farmland irrigation device as described above:

[0023] The metering mechanism also includes an installation cavity located in the middle of the drip head, a telescopic rod passing through the middle of the installation cavity and having a spring wound around its surface, with the two ends of the spring respectively fitting into the installation cavity and the inner wall of the spring;

[0024] The bottom of the telescopic rod is provided with a mounting hoop, and the surface of the spherical water blocker is provided with a rotating cavity for the mounting hoop to be nested.

[0025] A drainage mechanism is provided through the top of the telescopic rod and the spring.

[0026] Further description of a high-efficiency water-saving farmland irrigation device as described above:

[0027] The spherical water blocker is rotated by a rotating mechanism, which includes several slide rails set on the inner wall of the drip head. Multi-density racks are arranged on the inner wall of the slide rails. The multi-density racks include high-density racks, medium-density racks and low-density racks from top to bottom.

[0028] The spherical water blocker has rotating rods at both ends, and slots that cooperate with slide rails are provided on both sides of the water blocking plate. A slider that can be slidably embedded in the slide rail is provided in the slot. The rotating rods pass through the water blocking plate and the sliders and are equipped with gears that mesh with multi-density racks at their ends.

[0029] Further description of a high-efficiency water-saving farmland irrigation device as described above:

[0030] The multiple drainage mechanisms include a slot in the middle of the telescopic rod and a knob that passes through the top of the drip head. The knob is equipped with a rod that can be inserted into the slot, and the outer wall of the rod is provided with several locking blocks.

[0031] The slot includes a cylindrical slot that mates with the insert rod, a straight slot on the inner wall of the cylindrical slot that mates with the locking block, and an arc-shaped slot at the top end of the straight slot. Guided by the cylindrical slot, the insert rod can move the locking block out of the straight slot and rotate it into the arc-shaped slot, thereby pushing the telescopic rod to actively rise and fall.

[0032] Further description of a high-efficiency water-saving farmland irrigation device as described above:

[0033] The drip head is equipped with a water guiding mechanism inside, which includes a curved plate located in the middle of the drip head and penetrated by an insertion rod. The curved plate includes a slope near the water inlet end of the drip head and a plane at the end of the slope. A through hole is provided at the end of the plane. An arc plate is provided at the water outlet end of the drip head, and the arc plate is located below the through hole.

[0034] Further description of a high-efficiency water-saving farmland irrigation device as described above:

[0035] The last drip head has a cover plate at the water outlet to force water backflow. The backflowing water is guided by the arc plate and injected into the last drip head first.

[0036] In summary, due to the adoption of the above-mentioned technology, this invention provides a highly efficient water-saving farmland irrigation device. The beneficial effects of this invention are:

[0037] 1. Through the pressurization mechanism, water flows into the impeller, causing the impeller to drive the threaded rod to rotate under the restriction of the inlet. Because the connecting rod restricts the position of the limiting collar, the threaded rod cannot drive the inner threaded collar to rotate. The inner 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 full of water. At this time, the water guide plate is above the horizontal plane. When water is stopped being injected into the inner tank and 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. This stabilizes the water output speed of the inner tank when the water volume in the inner tank decreases. During water injection, the baffle rotates and creates gaps to avoid obstructing water from entering the inner tank. When water injection stops, multiple baffles reset and close, merging into a plane, thereby increasing the contact area with the water surface and improving the pressurization effect.

[0038] 2. Through the set quantitative and rotating mechanisms, water, after entering the drip head, will gather on the water-blocking plate and push the water-blocking plate. The water-blocking plate will cause the telescopic rod to move under the restriction of the installation cavity. The telescopic rod will compress the spring in the installation cavity and cause it to undergo elastic deformation. At the same time, the water-blocking plate will cause the spherical water blocker to descend. When the spherical water blocker descends and rotates, the channel formed between the water channel and the water-blocking plate will exist for a moderate time. The flow rate of water flowing out of the drip head through the channel is stable. When the water is discharged from the channel, the pressure in the drip head will decrease to balance with the external environment. Under the action of the spring elastic deformation recovery, the telescopic rod will be pulled up. Therefore, the gear will move back and forth at the medium-density rack and drive the spherical water blocker to rotate back and forth. Under constant pressure, the spherical water blocker will drain water in the drip head by reciprocating rotation and rising and falling. Attached Figure Description

[0039] Figure 1 A three-dimensional structural schematic diagram of a high-efficiency water-saving farmland irrigation equipment is shown;

[0040] Figure 2 It shows Figure 1 Enlarged structural diagram at point A;

[0041] Figure 3 A front view cross-sectional structural diagram and a flow direction diagram of a high-efficiency water-saving farmland irrigation device are shown;

[0042] Figure 4 It shows Figure 3 Enlarged structural diagram at point B;

[0043] Figure 5 It shows Figure 3 Enlarged structural diagram at point C;

[0044] Figure 6 A three-dimensional cross-sectional structural diagram of the pressurization mechanism is shown;

[0045] Figure 7 It shows Figure 6 Enlarged structural diagram at point D;

[0046] Figure 8 The diagram shows the state and flow direction when the water inlet plate descends;

[0047] Figure 9 The diagram shows the state and flow direction when the water inlet plate is rising;

[0048] Figure 10 A three-dimensional cross-sectional structural diagram of the drip irrigation head and metering mechanism is shown;

[0049] Figure 11 A frontal cross-sectional view and flow direction diagram of multiple drip irrigation heads connected together are shown.

[0050] Figure 12 A partial three-dimensional structural schematic diagram of the metering mechanism and the rotating mechanism is shown;

[0051] Figure 13 A partial three-dimensional cross-sectional structural schematic diagram of the rotating mechanism is shown;

[0052] Figure 14 A schematic diagram of the partial three-dimensional disassembly of the metering mechanism and the discharging mechanism is shown;

[0053] Figure 15 A three-dimensional structural schematic diagram of the drainage mechanism is shown;

[0054] Figure 16 A schematic diagram of the split state of the thinning sheet is shown.

[0055] Legend:

[0056] 10. Irrigation equipment body; 11. Pressure tank; 12. Pipeline; 13. Drip head; 131. Fine coating sheet;

[0057] 20. Pressurization mechanism; 21. Inner tank; 22. Inlet; 23. Impeller; 24. Threaded rod; 25. Connecting rod; 26. Limiting collar; 27. Internal threaded collar; 28. Water guide plate; 281. Mounting base; 282. Positioning groove; 283. Mounting rod; 284. Torsion spring; 285. Directional block; 286. Baffle; 29. ​​Outer clamp;

[0058] 30. Adjustment mechanism; 31. Turntable; 311. Slot; 32. Fitting rod; 321. Countersunk hole; 322. Rotating protrusion; 323. Insert block; 33. Fitting groove; 34. Handle;

[0059] 40. Metering mechanism; 41. Spherical water blocker; 411. Water channel; 412. Rotating cavity; 42. Water blocking plate; 43. Telescopic rod; 431. Mounting clamp; 44. Mounting cavity; 45. Spring;

[0060] 50. Drainage mechanism; 51. Knob; 52. Insert rod; 53. Locking block; 54. Locking slot

[0061] 60. Rotating mechanism; 61. Slide rail; 62. Multi-density rack; 621. High-density rack; 622. Medium-density rack; 623. Low-density rack; 63. Slider; 64. Rotating rod; 65. Gear;

[0062] 70. Water intake mechanism; 71. Curved plate; 72. Through hole; 73. Arc plate. Detailed Implementation

[0063] The following will describe, with reference to the accompanying drawings of the embodiments of the present invention, a high-efficiency water-saving farmland irrigation device according to the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of them. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0064] To address the issue that in solutions using water storage devices and siphon principles to replace pressurization devices, the pressurization effect is related to the water volume within the storage device. As the water level in the storage device decreases, the water flow rate from the drip irrigation nozzles also slows down, preventing the nozzles from maintaining a stable flow rate for drip irrigation. This invention proposes a high-efficiency water-saving farmland irrigation device, such as... Figure 1 - Figure 16 As shown:

[0065] The irrigation equipment includes a main body 10, which comprises a pressure tank 11, several pipes 12 installed at the bottom of the pressure tank 11, and drip irrigation heads 13 whose inlets are connected to the pipes 12. The outlet of each drip irrigation head 13 is connected to the inlet of an adjacent drip irrigation head 13 via a 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 pipes 12. A pressurizing mechanism 20 is installed inside the pressure tank 11. The pressurizing mechanism 20 includes components installed in the pressure tank. The inner tank 21 is located inside the pressure tank 11 and is connected to the outlet of the pressure tank 11. The inner tank 21 is equipped with a water inlet plate 28 that can be 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 is storing water, the water inlet plate 28 rises. When the inner tank 21 is full, the water inlet plate 28 falls to pressurize the water, so that the water reaches the drip head 13 through the pipe 12. The bottom of the drip head 13 is set to be detachable and is equipped with a fine plate 131 to prevent foreign objects from entering.

[0066] 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, it drives the impeller 23 to rotate and enters the inner tank 21 through the water inlet 22.

[0067] A threaded rod 24 and a connecting rod 25 are respectively provided at the bottom of the 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 that meshes with the threaded rod 24 is provided in the middle of the limiting collar 26, and a water guide plate 28 is installed on the outer wall of the limiting collar 26. The water guide plate 28 can rotate. An outer hoop 29 that fits against the inner wall of the inner tank 21 is connected to the other side of the water guide plate 28.

[0068] As water flows into the impeller 23, the impeller 23 drives the threaded rod 24 to rotate under the restriction of the inlet 22. Since the connecting rod 25 restricts the position of the limiting collar 26, the threaded rod 24 cannot drive the inner threaded collar 27 to rotate. The inner 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 tank 21 until the inner tank 21 is full of water. At this time, the water guide plate 28 is above the horizontal plane. When the water injection into the inner tank 21 is stopped and the water is introduced into the drip 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, thereby stabilizing the water output speed of the inner tank 21 when the water volume in the inner tank 21 decreases.

[0069] The water guide plate 28 includes a mounting base 281 installed on the limiting collar 26 and a positioning groove 282 formed in the mounting base 281, such as Figure 5 , Figure 8 and Figure 9 As shown, a mounting rod 283 is rotatably disposed inside the mounting base 281. An 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. The two ends of the torsion spring 284 are respectively connected to the mounting rod 283 and the inner wall of the mounting base 281.

[0070] A baffle 286 is installed on the mounting rod 283, and the other end of the baffle 286 is rotatably mounted on the outer hoop 29;

[0071] This design allows water to directly impact the baffle 286 when it enters the inner tank 21 through the inlet 22 under gravity. The impact causes the mounting rod 283 to rotate inside the mounting base 281. Simultaneously, the directional block 285, restricted by the positioning groove 282, can only rotate to one side with a maximum rotation angle of 60 degrees. During rotation, the mounting rod 283, in conjunction with the mounting base 281, pulls the torsion spring 284, causing elastic deformation. After water injection, the torsion spring 284 recovers its elastic deformation and pulls the baffle 286 to rotate and reset, allowing the baffle 286 to be horizontally attached to the water surface. This achieves the goal of increasing the contact area with the water surface and improving the pressurization effect when water is injected, as the baffle 286 rotates and creates gaps. When water injection stops, multiple baffles 286 reset and close, merging into a flat surface.

[0072] 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 be manually rotated via the adjusting mechanism 30. Figure 2 and Figure 6As shown, an adjustment mechanism 30 is provided between the pressure tank 11 and the inner liner 21. The adjustment mechanism 30 includes a turntable 31 rotatably mounted on the pressure tank 11, a handle 34 mounted on the turntable 31, and a fitting groove 33 opened on the top of the impeller 23. A fitting rod 32 is provided through the middle of the turntable 31, and the fitting rod 32 passes through the inner liner 21 and is inserted into the fitting groove 33.

[0073] By rotating the handle 34, the handle 34 drives the turntable 31 to rotate under the restriction of the pressure tank 11. The turntable 31 drives the impeller 23 to rotate actively through the fitting rod 32 and the fitting groove 33 to adjust the height of the water inlet plate 28.

[0074] The top of the fitting rod 32 has a countersunk hole 321, and an insert block 323 is slidably disposed in the countersunk hole 321. A rotating protrusion 322 is rotatably disposed between the two insert blocks 323.

[0075] The inner walls of the turntable 31 are provided with slots 311 on both sides that engage with the insert block 323;

[0076] When the water pressure injected into the inner tank 21 is sufficient to drive the impeller 23 to rotate, the connection between the turntable 31 and the fitting rod 32 can be released. By rotating the rotating protrusion 322, the rotating protrusion 322 will no longer push the insertion block 323 to fit into the slot 311. The two insertion blocks 323 can move and be put into the countersunk hole 321. The connection between the fitting rod 32 and the turntable 31 is released. When the impeller 23 rotates, it will not drive the turntable 31 to rotate through the fitting rod 32, thereby avoiding the adjustment mechanism 30 from affecting the smoothness and stability of the impeller 23's rotation.

[0077] Reverse operation causes the rotating protrusion 322 to push the insert 323 into the slot 311, which can manually drive the impeller 23 to rotate.

[0078] To ensure that the water output of drip head 13 does not change significantly under different water pressures, such as Figures 10-14 As shown, a metering mechanism 40 is provided inside the drip irrigation head 13. The metering 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 rises and falls with the water pressure. The rotation speed of the spherical water blocker 41 increases with the increase of water pressure.

[0079] The spherical water blocker 41 has several water channels 411 on its surface. When the spherical water blocker 41 rotates, a channel is formed between the water channels 411 and the water blocking plate 42. When the water pressure increases, the existence time of the channel is shortened, and water flows out from the drip head 13 through the channel.

[0080] The metering mechanism 40 also includes an installation cavity 44 located in the middle of the drip head 13. A telescopic rod 43 is inserted through the middle of the installation cavity 44 and a spring 45 is wound around its surface. The two ends of the spring 45 are respectively attached to the inner wall of the installation cavity 44 and the inner wall of the spring 45.

[0081] The telescopic rod 43 is provided with a mounting hoop 431 at the bottom. The spherical water blocker 41 has a rotating cavity 412 on its surface for the mounting hoop 431 to be nested in. The spherical water blocker 41 can rotate under the restriction of the mounting hoop 431 through the rotating cavity 412.

[0082] After water enters the drip head 13, it will gather on the water blocking plate 42 and push the water blocking plate 42, causing the water blocking plate 42 to drive the telescopic rod 43 to move under the restriction of the mounting cavity 44. The telescopic rod 43 squeezes the spring 45 in the mounting cavity 44 and causes it to undergo elastic deformation. At the same time, the water blocking plate 42 drives the spherical water blocking device 41 to descend.

[0083] The spherical water blocker 41 rotates via the rotating mechanism 60, such as Figure 12 and Figure 13 As shown, the rotating mechanism 60 includes several slide rails 61 disposed on the inner wall of the drip head 13. Multi-density racks 62 are arranged on the inner wall of the slide rails 61. The multi-density racks 62 include high-density racks 621, medium-density racks 622 and low-density racks 623 from top to bottom.

[0084] The spherical water blocker 41 is provided with rotating rods 64 at both ends. The water blocking plate 42 is provided with slots on both sides that cooperate with the slide rail 61. A slider 63 is provided in the slots and 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 is equipped with a gear 65 at the end that meshes with the multi-density rack 62.

[0085] When the spherical water blocker 41 and the water blocking plate 42 descend, the water blocking plate 42 drives the slider 63 to slide under the restriction of the slide rail 61, while the spherical water blocker 41 drives the gear 65 to move inside the slide rail 61 through the rotating rod 64.

[0086] When the water pressure is moderate, the gear 65 will move to the medium-density rack 622. The tooth density of the medium-density rack 622 is moderate. Therefore, with the cooperation of the medium-density rack 622 and the gear 65, the rotation speed of the spherical water blocker 41 is moderate. When the spherical water blocker 41 rotates, the time that the channel is formed between the water channel 411 and the water blocking plate 42 is moderate. The flow rate of water flowing out of the drip head 13 through the channel is stable.

[0087] When water is discharged from the channel, the pressure inside the drip head 13 decreases. Under the action of the elastic deformation recovery of the spring 45, the telescopic rod 43 is pulled up. Therefore, the gear 65 will move back and forth at the medium density rack 622, and drive the spherical water blocker 41 to rotate back and forth. Under constant pressure, the spherical water blocker 41 will drain water in the drip head 13 by reciprocating rotation and lifting.

[0088] When the water pressure is high, the gear 65 will move to the low-density rack 623. Since the low-density rack 623 has the highest tooth density, the spherical water blocker 41 rotates the fastest at this time. When the spherical water blocker 41 rotates, the time that the channel is formed between the water channel 411 and the water blocking plate 42 is the shortest. The flow rate of water flowing out of the drip head 13 through the channel is the lowest. However, since the spherical water blocker 41 rotates faster, the interval between the water channel 411 and the water blocking plate 42 is the shortest. Therefore, the actual total amount of water discharged is similar to that when the water pressure is moderate.

[0089] 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. The flow rate of water flowing out of the drip head 13 through the channel is the highest. Thus, while increasing the water output under low water pressure, the drip head 13 can still be sealed by the spherical water blocker 41 after the water injection stops.

[0090] The above solution achieves the goal of adjusting the water output mode of the drip irrigation head 13 under different water pressures, ensuring that the water output of the drip irrigation head 13 does not change significantly, thereby improving the irrigation effect.

[0091] In drip irrigation operations, the drip head 13 needs to be inspected and maintained regularly. Before maintenance, the residual water in the drip head 13 needs to be drained, such as... Figure 12 , Figure 14 and Figure 15 As shown, a drainage mechanism 50 is provided through the top of the telescopic rod 43 and the spring 45;

[0092] Multiple drainage mechanisms 50 include a slot 54 opened in the middle of the telescopic rod 43 and a knob 51 passing through the top of the drip head 13. A plug rod 52 that can be inserted into the slot 54 is installed on the knob 51, and several locking blocks 53 are provided on the outer wall of the plug rod 52.

[0093] The slot 54 includes a cylindrical slot that mates with the insert rod 52, a straight slot on the inner wall of the cylindrical slot that mates with the locking block 53, and an arc-shaped slot at the top end of the straight slot.

[0094] By pulling the insertion rod 52, the insertion rod 52 moves the locking block 53 in the straight groove under the guidance of the cylindrical groove. After the locking block 53 moves to the end of the straight groove, the insertion rod 52 is rotated, causing the insertion rod 52 to drive the locking block 53 to rotate and embed into the arc groove. Then, the insertion rod 52 is pushed, so that the insertion rod 52 abuts against the arc groove and pushes the telescopic rod 43, so that the telescopic rod 43 can actively drive the spherical water blocker 41 and the water blocking plate 42 to descend. After the spherical water blocker 41 rotates to the appropriate state, the pushing stops. At this time, a channel is formed between the water channel 411 and the water blocking plate 42 and remains open, thereby achieving the purpose of draining the liquid remaining in the drip irrigation head 13.

[0095] To ensure that water is injected first into the drip head 13 at the very end, and to prevent fertilizer from accumulating inside the pipe 12 and drip head 13 and causing blockage, as follows: Figure 11 As shown, the drip irrigation head 13 is provided with a water guiding mechanism 70 to guide water flow. The water guiding mechanism 70 includes a curved plate 71 located in the middle of the drip irrigation head 13 and penetrated by the insertion rod 52. The curved plate 71 includes a slope near the water inlet end of the drip irrigation head 13 and a plane located at the end of the slope. 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.

[0096] After entering the pipe 12 and drip head 13, the water first contacts the slope of the curved plate 71, preventing it from directly entering the drip head 13. Guided by the slope of the curved plate 71, the water reaches the plane. A small portion of the water enters the drip head 13 through the through hole 72, while most of the water enters the pipe 12 connecting the two drip heads 13 through the through hole 72. Under the action of gravity, the water is accelerated through the pipe 12 to reach the next drip head 13. The undulating curved plate 71 and arc plate 73 change the flow pattern of water in the pipe 12 and drip head 13, which helps to reduce the accumulation of sediment at the bottom of the pipe 12 and drip head 13, thereby achieving the effect of keeping the flow unobstructed.

[0097] The outlet end of the last drip head 13 is equipped with a cover plate that forces water to flow back. The flowing water is guided by the arc plate 73 and first enters the last drip head 13, thereby avoiding the problem that the last drip head 13 cannot inject enough water due to insufficient water pressure. After the last drip head 13 is full, it forms the same blocking effect as the cover plate, so that the other drip head 13 closest to the last drip head 13 is filled with water first, until the drip head 13 closest to the pressure tank 11 is filled with water.

[0098] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any person skilled in the art who makes equivalent substitutions or changes to the efficient water-saving farmland irrigation equipment and its inventive concept based on the present invention within the scope of the technology disclosed in the present invention should be covered within the scope of protection of the present invention.

Claims

1. A high-efficiency water-saving farmland 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 drip irrigation heads (13) whose inlet ends are connected to the long pipes (12), the outlet end of the drip irrigation head (13) being connected to the inlet end of an adjacent drip irrigation head (13) through a short pipe (12), characterized in that: The pressurizing tank (11) is equipped with a pressurizing mechanism (20). The pressurizing mechanism (20) includes an inner liner (21) installed inside the pressurizing tank (11) and connected to the outlet of the pressurizing tank (11), and a water inlet plate (28) installed inside the inner liner (21) and movable. The inner liner (21) is used to store water and is equipped with a water channel. Water enters the inner liner (21) through the water channel. When the inner liner (21) stores water, the water inlet plate (28) rises. After the inner liner (21) is full, the water inlet plate (28) descends to pressurize the water, so that the water reaches the drip irrigation head (13) through the pipe (12). The drip head (13) is provided with a metering mechanism (40), which includes a rotatable spherical water blocker (41) and a water blocking plate (42) nested on the surface of the spherical water blocker (41). The top of the spherical water blocker (41) is provided with a telescopic rod (43) that rises and falls with the water pressure. The rotation speed of the spherical water blocker (41) increases with the increase of water pressure. The spherical water blocker (41) is rotated by a rotating mechanism (60). The rotating mechanism (60) includes several slide rails (61) arranged on the inner wall of the drip head (13). The inner wall of the slide rails (61) is arranged with multi-density racks (62). The multi-density racks (62) include high-density racks (621), medium-density racks (622) and low-density racks (623) from top to bottom. The spherical water blocker (41) is provided with rotating rods (64) at both ends. The water blocking plate (42) is provided with slots on both sides that cooperate with the slide rail (61). A slider (63) is provided in the slot and 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 is equipped with a gear (65) at the end that meshes with the multi-density rack (62). The spherical water blocker (41) has several water channels (411) on its surface. When the spherical water blocker (41) rotates, a channel is formed between the water channels (411) and the water blocking plate (42). When the water pressure increases, the existence time of the channel is shortened, and water flows out from the drip head (13) through the channel.

2. The high-efficiency water-saving farmland irrigation equipment according to claim 1, characterized in that, The pressurizing mechanism (20) also includes an inlet (22) provided on the water channel of the inner tank (21) and an impeller (23) rotatably provided in the middle of the inlet (22). When the water flows through the water channel, it drives the impeller (23) to rotate and enters the inner tank (21) through the inlet (22). The bottom of the 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 internal threaded collar (27) that meshes with the threaded rod (24) is provided in the middle of the limiting collar (26). The water guide plate (28) is installed on the outer wall of the limiting collar (26) and can deflect. An outer hoop (29) that fits against the inner wall of the inner tank (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-guiding plate (28) includes a mounting seat (281) installed on a limiting collar (26) and a positioning groove (282) opened in the mounting seat (281). A mounting rod (283) is rotatably arranged in the mounting seat (281). A directional block (285) is provided on the mounting rod (283) and slidably embedded in the positioning groove (282). A torsion spring (284) is also wound around the surface of the mounting rod (283). 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 (286) is installed 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 pressure tank (11) and the inner liner (21). The adjustment mechanism (30) includes a turntable (31) rotatably mounted on the pressure tank (11), a handle (34) mounted on the turntable (31), and a fitting groove (33) opened on the top of the impeller (23). A fitting rod (32) is provided through the middle of the turntable (31). The fitting rod (32) passes through the inner liner (21) and is inserted into the fitting groove (33).

5. The high-efficiency water-saving farmland irrigation equipment according to claim 4, characterized in that, The top of the fitting rod (32) is provided with a countersunk hole (321), and a plug (323) is slidably arranged in the countersunk hole (321). A rotating protrusion (322) is rotatably arranged between the two plugs (323). The inner wall of the turntable (31) has slots (311) on both sides that fit into the insert block (323).

6. The high-efficiency water-saving farmland irrigation equipment according to claim 1, characterized in that, The quantitative mechanism (40) also includes an installation cavity (44) located in the middle of the drip head (13), a telescopic rod (43) passing through the middle of the installation cavity (44) and having a spring (45) wound around its surface, with the two ends of the spring (45) respectively attached to the inner wall of the installation cavity (44) and the inner wall of the spring (45); The telescopic rod (43) is provided with a mounting hoop (431) at the bottom, and the spherical water blocker (41) has a rotating cavity (412) for the mounting hoop (431) to be nested on its surface. The top of the telescopic rod (43) and the spring (45) is provided with a drainage mechanism (50).

7. The high-efficiency water-saving farmland irrigation equipment according to claim 6, characterized in that, The multiple drainage mechanisms (50) include a slot (54) in the middle of the telescopic rod (43) and a knob (51) penetrating the top of the drip head (13). The knob (51) is equipped with a rod (52) that can be inserted into the slot (54), and a number of locking blocks (53) are provided on the outer wall of the rod (52). The slot (54) includes a cylindrical slot that cooperates with the insert rod (52), a straight slot on the inner wall of the cylindrical slot that cooperates with the locking block (53), and an arc-shaped slot at the top end of the straight slot. The insert rod (52) can drive the locking block (53) to move out of the straight slot and rotate into the arc-shaped slot under the guidance of the cylindrical slot. The insert rod (52) can push the telescopic rod (43) to actively rise and fall.

8. The high-efficiency water-saving farmland irrigation equipment according to claim 6, characterized in that, The drip head (13) is provided with a water guiding mechanism (70) to guide water flow. The water guiding mechanism (70) includes a curved plate (71) located in the middle of the drip head (13) and penetrated by the insertion rod (52). The curved plate (71) includes a slope near the water inlet end of the drip head (13) and a plane located at the end of the slope. 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 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, The last drip head (13) is provided with a cover plate at the water outlet to force water backflow. The backflowing water is first injected into the last drip head (13) under the guidance of the arc plate (73).

Images