Agricultural water-saving drip irrigation device

Abstract

The invention relates to the technical field of agricultural drip irrigation, in particular to an agricultural water-saving drip irrigation device which comprises a main pipeline and a base, the main pipeline is communicated with a plurality of branch pipes, each branch pipe is communicated with a plurality of drip irrigation heads, the top of the base is fixedly connected with a driving box and a water tank, and the top of the water tank is provided with a fertilizer box; the bottom of the fertilizer box fixedly communicates with a funnel groove, the bottom of the funnel groove fixedly communicates with the top of the water tank, and a push plate is slidably matched with an opening in the bottom of the funnel groove and used for covering the opening; one end, far away from the push plate, of the connecting rod penetrates through the water tank and the side wall of the driving box and extends into the driving box; a driving assembly is arranged in the driving box; a stirring assembly is arranged in the water tank, the main pipeline communicates with a pump assembly, and an input port of the pump assembly communicates with the bottom of the water tank. Fertilizer in the funnel groove intermittently falls into the stirring assembly to be stirred, the problem that a drip irrigation head is blocked due to insufficient stirring of the fertilizer caused by continuous feeding is avoided, and therefore water-saving drip irrigation is achieved.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of agricultural drip irrigation technology, in particular to a water-saving drip irrigation device for agriculture. BACKGROUND

[0002] In agricultural production, drip irrigation technology as an efficient water-saving irrigation method has been widely used in agricultural production around the world due to its advantages of accurately delivering water and nutrients to crop roots and reducing evaporation and seepage loss. Currently, applying fertilizers in the drip irrigation system is an important means to improve crop yield. By dissolving fertilizers in water and directly delivering them to crop roots during the drip irrigation process, the utilization rate of fertilizers can be greatly improved.

[0003] In the prior art, for example, the multi-channel Z-shaped water and fertilizer integrated machine of Jinye Intelligence connects the water and fertilizer integrated machine to the drip irrigation belt and lays the drip irrigation belt in the field. Solid fertilizers are proportionally fed into the mixing tank of the water and fertilizer integrated machine, fully mixed with water by the built-in stirring device to form a uniform water and fertilizer solution. Then, the water and fertilizer solution is pressurized by the pump assembly and enters the drip irrigation belt. Finally, the water and fertilizer solution is directly delivered to the soil around the crop roots in the form of slow and stable dripping through the evenly distributed drippers on the drip irrigation belt, realizing the simultaneous and accurate supply of water and nutrients, avoiding the problems of nutrient loss and soil compaction in traditional fertilization methods, and achieving water-saving effect.

[0004] However, in actual use of the water and fertilizer integrated machine, solid fertilizers are usually continuously fed into the mixing tank for stirring. This continuous feeding method of fertilizers may cause some solid fertilizers to be difficult to be fully stirred. If some fertilizers have poor solubility, the fertilizers may precipitate in the drip irrigation belt and block the drip irrigation head. Therefore, it is necessary to provide a water-saving drip irrigation device for agriculture to solve the problem that continuous feeding of fertilizers may cause some fertilizers to be difficult to be fully stirred due to poor solubility, and the fertilizers may precipitate in the drip irrigation belt and block the drip irrigation head. SUMMARY

[0005] To solve the above problems, the present application provides a water-saving drip irrigation device for agriculture, which is used to intermittently open and close the opening of the funnel groove by driving the funnel groove, so that the fertilizers in the funnel groove fall into the stirring assembly for stirring intermittently, to realize batch feeding and full dissolution of the fertilizers, thereby realizing water-saving drip irrigation and avoiding the problem of blockage of the drip irrigation head caused by insufficient stirring due to continuous feeding.

[0006] To achieve the above objectives, the technical solution of the present invention is as follows: An agricultural water-saving drip irrigation device includes a main pipe, with several branch pipes connected to the main pipe, each branch pipe connected to several drip irrigation heads; it also includes a controller and a base, with a drive box and a water tank fixedly connected to the top of the base, and a support foot fixedly connected to the bottom of the base; a fertilizer box is provided on the top of the water tank; a funnel groove is fixedly connected to the bottom of the fertilizer box, and the bottom of the funnel groove is fixedly connected to the top of the water tank; a push plate is slidably fitted on the opening at the bottom of the funnel groove, and the push plate is used to cover the opening; a connecting rod is fixedly connected to the push plate, and one end of the connecting rod away from the push plate extends through the side wall of the water tank and the drive box into the drive box, and the connecting rod is slidably fitted with the side wall of the water tank and the drive box; the drive box is provided with a drive assembly for driving the connecting rod to reciprocate and thus driving the push plate to intermittently block the opening; a stirring assembly is provided in the water tank for stirring the fertilizer and water entering the water tank, and the drive assembly is used to drive the stirring assembly to operate; a pump assembly is connected to the main pipe, and the inlet of the pump assembly is connected to the bottom of the water tank; the controller is used to control the operation of the pump assembly.

[0007] The technical principles of the above solution are as follows: When fertilizer is added to the fertilizer tank, the push plate covers the opening at the bottom of the funnel, preventing the fertilizer from falling into the water tank. Activating the drive assembly causes the connecting rod to reciprocate, resulting in the push plate sliding back and forth with the rod. When the push plate slides away from the opening at the bottom of the funnel, the opening opens, and the fertilizer in the funnel intermittently falls into the water tank under gravity. When the push plate slides back to its original position and covers the opening again, the fertilizer's fall is stopped, achieving batch-wise fertilizer addition. Simultaneously, the drive assembly also drives the stirring assembly, which thoroughly mixes the water in the tank and the newly added fertilizer, ensuring that each batch of fertilizer is fully mixed and dissolved in the water, forming a uniform water-fertilizer solution. When drip irrigation is needed, the controller starts the pump assembly, which draws the water and fertilizer solution from the bottom of the tank and delivers it to the main pipeline. The water and fertilizer solution is then distributed to the branch pipes through the main pipeline and finally dripped slowly and steadily into the soil around the crop roots through the drip irrigation heads on the branch pipes, thus achieving drip irrigation for the crops.

[0008] The above approach has the following beneficial effects: 1. This invention uses a drive component to drive a push plate to slide back and forth, thereby intermittently opening and closing the funnel opening, allowing fertilizer to fall into the water tank in batches. In conjunction with a synchronously operating stirring component, each batch of fertilizer is thoroughly stirred, reducing the problem of insufficient fertilizer dissolution caused by continuous feeding, reducing the probability of undissolved particles entering the drip irrigation system, and lowering the risk of drip head clogging.

[0009] 2. In this invention, fertilizer dispensing and mixing are carried out simultaneously, eliminating the need for separate fertilizer dispensing and mixing drive devices. The dual functions are achieved through the same drive component, simplifying the overall structure of the equipment, reducing the probability of mechanical failure, reducing energy consumption, and improving the economy and stability of equipment operation.

[0010] 3. Compared with traditional sprinkler irrigation, this invention can significantly reduce water consumption through drip irrigation. At the same time, by dissolving fertilizer in water during the drip irrigation process, it can deliver fertilizer directly to the crop roots, thereby improving fertilizer utilization and saving fertilizer usage, which has certain economic benefits.

[0011] Furthermore, the drive assembly includes a dual-head drive unit fixedly connected to the outer wall of the drive housing, and a support rod fixedly connected to the inner bottom wall of the drive housing. The connecting rod and the support rod are slidably engaged, and the controller is used to control the rotation of the output shaft of the dual-head drive unit.

[0012] A rotating shaft is rotatably fitted on the side wall of the support rod. The output shaft of one end of the dual-head drive unit extends through the side wall of the drive box into the drive box and is coaxially and fixedly connected with the rotating shaft. The rotating shaft has symmetrical sliding grooves on its side wall. A first wheel is fitted on the outer sleeve of the rotating shaft. The first wheel is hinged to the middle of the sliding groove. A through groove is opened on the first wheel. The inner side walls of the through groove in both length directions are slidably fitted with the adjacent sliding grooves. A sliding groove is opened circumferentially on the side wall of the first wheel. A ball is rolled in the sliding groove. A support rod is rotatably fitted on the ball. The end of the support rod away from the ball is fixedly connected to the bottom of the connecting rod.

[0013] A flat key is axially fixed to the outer wall of the rotating shaft, and a second wheel is also sleeved on the outside of the rotating shaft. The second wheel slides in conjunction with the rotating shaft and the flat key, and a circumferential groove is opened on the side wall of the second wheel.

[0014] A transmission rod is hinged to one side wall of the first wheel, and the end of the transmission rod away from the first wheel is hinged to the side wall of the second wheel.

[0015] Beneficial effects: The drive assembly drives the rotating shaft to rotate through the double-headed drive component. The sliding groove on the rotating shaft cooperates with the through groove of the first wheel, and the ball bearings and support rod drive the connecting rod to reciprocate, realizing the intermittent opening and closing of the push plate. At the same time, the linkage of the flat key, the second wheel and the transmission rod can ensure the synchronization of fertilizer dispensing and mixing.

[0016] Furthermore, the second wheel is equipped with an adjustment component for adjusting the interval time of the push plate blocking the opening; the adjustment component includes a roller that rolls in the groove, and a traction rod that rotates in the side wall of the roller; a fixing block is fixedly connected to the side wall of the support rod, and a sliding hole is opened on the fixing block, with the traction rod and the sliding hole sliding in contact.

[0017] An electric control cylinder is fixedly connected to the end of the traction rod away from the roller. The end of the electric control cylinder away from the traction rod is fixedly connected to the inner side wall of the drive box. The controller is used to control the extension and retraction of the electric control cylinder.

[0018] Beneficial effects: The adjusting component, through the extension and retraction of the electric cylinder, drives the traction rod to rotate, causing the roller to move within the groove. This, in turn, pushes the second disc to slide axially along the shaft. The transmission rod changes the oscillation amplitude and frequency of the first disc, thus adjusting the interval between push plates. The feeding frequency can be adjusted according to the solubility of different fertilizers and the fertilizer requirements of crops at different growth stages.

[0019] Furthermore, the stirring assembly includes a stirring shaft coaxially fixedly connected to the end of the rotating shaft away from the support rod. The end of the stirring shaft away from the rotating shaft extends through the drive box and the side wall of the water tank into the water tank and is provided with several stirring components in the circumferential direction.

[0020] Beneficial effects: The mixing component and the drive component share the same shaft power. The rotation of the shaft directly drives the mixing shaft and mixing rod to rotate, thus mixing the water and fertilizer in the water tank.

[0021] Furthermore, a water supply assembly for supplying water to the water tank is provided on the output shaft of the dual-head drive unit at the end away from the support rod. The water supply assembly includes a water injection pipe fixedly connected to the inner wall of the water tank, and a turntable coaxially fixedly connected to the output shaft of the dual-head drive unit at the end away from the support rod. A crank is eccentrically hinged to the side wall of the turntable, and a piston connecting rod is hinged to the end of the crank away from the turntable. A piston is fixedly connected to the end of the piston connecting rod away from the crank. A piston cylinder is fixedly connected to the top of the base, and the piston and the inner wall of the piston cylinder slide in fit. A water inlet pipe and a water outlet pipe are connected to the bottom side wall of the piston cylinder. A first one-way valve is connected to both the water inlet pipe and the water outlet pipe. The water outlet pipe is connected to the water injection pipe, and the water inlet pipe is connected to a filter. The inlet of the filter is connected to a water source.

[0022] Beneficial effects: The water conveying assembly uses the output shaft at the other end of the dual-head drive to drive the turntable to rotate, and drives the piston to reciprocate in the piston cylinder through the crank and piston connecting rod. Combined with the one-way valve, it realizes the extraction and delivery of water source and automatically replenishes water tank.

[0023] Furthermore, the funnel groove is equipped with an anti-clogging component to prevent fertilizer from clogging the opening; the anti-clogging component includes several air nozzles fixedly connected to the inner wall of the funnel groove, and a piston rod fixedly connected to the end of the connecting rod away from the push plate. A cylinder is fixedly connected to the inner wall of the drive box, and the piston rod and the inner wall of the cylinder slide in fit; an air inlet pipe and an air outlet pipe are connected to the side wall of the cylinder, and a second one-way valve is connected to both the air inlet pipe and the air outlet pipe. The air inlet pipe is connected to the outside of the drive box, and the air nozzles are all connected to the air outlet pipe.

[0024] Beneficial effects: The anti-clogging component moves back and forth with the connecting rod, causing the piston to slide inside the cylinder. It draws in air from the outside through the one-way valve and delivers the gas to the air nozzle through the air outlet pipe. The air nozzle sprays air into the funnel groove, which can disperse the accumulated fertilizer and prevent the fertilizer from clumping and clogging at the opening.

[0025] Furthermore, each branch pipe is fixedly connected to a soil moisture sensor. The controller is used to receive the soil moisture signal sent by the soil moisture sensor and control the rotation of the output shaft of the dual-head drive and the operation of the pump assembly based on the moisture signal.

[0026] Beneficial effects: The soil moisture sensor monitors the soil moisture in the field in real time, and the controller automatically adjusts the operation of the dual-head drive and the start and stop of the pump assembly based on the moisture data to achieve on-demand irrigation and fertilization.

[0027] Furthermore, a water level sensor is fixedly connected to the inner wall of the water tank. The controller is used to receive the water level signal in the water tank sent by the water level sensor and control the pump assembly to start and stop based on the water level signal.

[0028] Beneficial effects: The water level sensor can monitor changes in the water level in the tank in real time. When the water level is detected to be higher than the preset upper limit threshold, the controller will promptly stop the relevant components supplying water to the tank, thus ceasing the supply of water. This design effectively prevents water overflow caused by overfilling of the tank, avoiding water waste.

[0029] Furthermore, the stirring component includes a main stirring rod fixedly connected to the side wall of the stirring shaft, and an arc-shaped stirring plate fixedly connected to the end of the main stirring rod away from the stirring shaft. The concave surface of the stirring plate faces the direction of rotation of the stirring shaft, and several guide holes are opened on the side wall of the stirring plate.

[0030] Beneficial effects: When the arc-shaped stirring plate rotates with the stirring shaft, the concave surface can form a water vortex, which enhances the disturbance effect on the water-fertilizer solution in the water tank, making the fertilizer and water mix more thoroughly; the guide hole allows some water to pass through the stirring plate, reducing stirring resistance while forming local turbulence, further improving the uniformity of stirring, preventing fertilizer particles from settling at the bottom of the water tank, and ensuring the consistency of the water-fertilizer solution concentration.

[0031] Furthermore, the stirring component includes a vertical stirring rod fixedly connected to the side wall of the stirring shaft, and a fan blade is rotatably fitted on the side wall of the vertical stirring rod, with the fan blade facing the direction of rotation of the stirring shaft.

[0032] Beneficial effects: When the vertical stirring rod rotates with the stirring shaft, the fan blades will rotate autonomously under the impact of the water flow, forming multi-directional water flow agitation and expanding the stirring range; the rotation of the fan blades can break the laminar flow state in the water tank, so that the water fertilizer solution at different depths can be fully mixed.

[0033] Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0034] Figure 1 This is an isometric view of the water-saving drip irrigation device for agriculture according to the present invention.

[0035] Figure 2 for Figure 1 Enlarged view of section A.

[0036] Figure 3 This is a side sectional axonometric view of the water-saving drip irrigation device for agriculture of the present invention.

[0037] Figure 4 for Figure 3 Enlarged view of section B.

[0038] The reference numerals in the accompanying drawings of the instruction manual include: 1. Main pipe; 2. Branch pipe; 3. Base; 4. Drive box; 5. Water tank; 6. Support foot; 7. Fertilizer box; 8. Funnel trough; 9. Push plate; 10. Connecting rod; 11. Pump assembly; 12. Dual-head DC motor; 13. Support rod; 14. Rotating shaft; 15. First wheel; 16. Slide groove; 17. Ball bearing; 18. Support rod; 19. Flat key; 20. Second wheel; 21. Roll groove; 22. Transmission rod; 23. Roller; 24. Traction rod; 25. Fixing block; 26. Electric control cylinder; 27. Stirring shaft; 28. Water injection pipe; 29. ​​Turntable; 30. Crank; 31. Piston connecting rod; 32. Cylinder; 33. Piston cylinder; 34. Water inlet pipe; 35. Water outlet pipe; 36. Piston column; 37. Blade. Detailed Implementation

[0039] The following detailed description illustrates the specific implementation method: Example 1: As shown in the attached document Figure 1 As shown: An agricultural water-saving drip irrigation device includes a main pipe 1, with several branch pipes 2 connected to the main pipe 1, and several drip irrigation heads connected to each branch pipe 2. It also includes a controller and a base 3. The top of the base 3 is fixedly connected to a drive box 4 and a water tank 5 by bolts, and the bottom of the base 3 is fixedly connected to a support foot 6 by bolts. A fertilizer box 7 is provided on the top of the water tank 5.

[0040] The bottom of the fertilizer tank 7 is integrally formed and connected to the funnel trough 8. The bottom of the funnel trough 8 and the top of the water tank 5 are fixedly connected by bolts.

[0041] like Figure 3As shown, a push plate 9 is slidably fitted on the opening at the bottom of the funnel trough 8, and the push plate 9 is used to cover the opening; a connecting rod 10 is fixedly connected to the push plate 9 by screws, and the end of the connecting rod 10 away from the push plate 9 passes through the side wall of the water tank 5 and the drive box 4 and extends into the drive box 4. The connecting rod 10 is slidably fitted with both the side wall of the water tank 5 and the drive box 4.

[0042] The drive box 4 is equipped with a drive assembly for driving the connecting rod 10 to reciprocate and thus drive the push plate 9 to intermittently block the opening; the water tank 5 is equipped with a stirring assembly for stirring the fertilizer and water entering the water tank 5, and the drive assembly is used to drive the stirring assembly to run.

[0043] The main pipeline 1 is connected to the pump assembly 11, the inlet of the pump assembly 11 is connected to the bottom of the water tank 5, and the controller is used to control the operation of the pump assembly 11.

[0044] like Figure 3 and Figure 4 As shown, specifically, the drive assembly includes a dual-head drive unit that is bolted to the outer wall of the drive housing 4, and a support rod 13 that is bolted to the inner bottom wall of the drive housing 4. The connecting rod 10 and the support rod 13 are slidably engaged. The controller is used to control the rotation of the output shaft of the dual-head drive unit. In this embodiment, the dual-head drive unit is a dual-head DC motor 12.

[0045] A rotating shaft 14 is rotatably fitted on the side wall of the support rod 13. The output shaft of one end of the dual-head DC motor 12 extends through the side wall of the drive box 4 and into the drive box 4, and is coaxially fixedly connected to the rotating shaft 14 by bolts. The rotating shaft 14 has symmetrically opened sliding grooves 16 on its side wall. The rotating shaft 14 is fitted with a first wheel 15, which is hinged to the middle of the sliding groove 16. The first wheel 15 has a through groove, and the inner side walls of the through groove in both length directions are slidably fitted with the adjacent sliding grooves 16. The side wall of the first wheel 15 has a circumferentially opened sliding groove, and a ball 17 is rolled in the sliding groove. A support rod 18 is rotatably fitted on the ball 17. The end of the support rod 18 away from the ball 17 is fixedly connected to the bottom of the connecting rod 10 by screws.

[0046] A flat key 19 is integrally formed on the outer wall of the rotating shaft 14. A second wheel 20 is also fitted around the rotating shaft 14. The second wheel 20 slides in conjunction with the rotating shaft 14 and the flat key 19. A circumferential groove 21 is formed on the side wall of the second wheel 20. A transmission rod 22 is hinged to one side wall of the first wheel 15. The end of the transmission rod 22 away from the first wheel 15 is hinged to the side wall of the second wheel 20. The second wheel 20 is provided with an adjustment component for adjusting the interval time of the push plate 9 blocking the opening.

[0047] Combination Figure 3 and Figure 4As shown, fertilizer is poured into fertilizer box 7, and fertilizer will enter funnel trough 8. The dual-head DC motor 12 is started by the controller, and its output shaft starts to rotate. Since the output shaft of one end of the dual-head DC motor 12 and the rotating shaft 14 are coaxially fixed, the rotating shaft 14 starts to rotate. Since the second wheel 20 is in sliding fit with the rotating shaft 14 and the key 19, and the first wheel 15 is hinged to the sliding groove 16 on the rotating shaft 14, the rotating shaft 14 can drive the second wheel 20 and the first wheel 15 to rotate synchronously.

[0048] Simultaneously, the second wheel 20 can slide left and right while rotating on the shaft 14. When the second wheel 20 slides to the right while rotating, since the transmission rod 22 is hinged to both the first wheel 15 and the second wheel 20, the rightward sliding of the second wheel 20 can drive the transmission rod 22, which in turn drives the first wheel 15 to rotate radially in a " / " shape eccentrically. Since the ball 17 rolls with the sliding groove on the first wheel 15, the radial eccentric rotation of the first wheel 15 can drive the ball 17 to make a reciprocating linear displacement left and right along with the radial eccentric rotation of the first wheel 15. Since one end of the support rod 18 is rotatably engaged with the ball 17 and the other end is fixed to the bottom of the connecting rod 10, the reciprocating linear motion of the ball 17 will be transmitted to the connecting rod 10 through the support rod 18, causing the connecting rod 10 to slide left and right along the sliding direction of the support rod 13. Therefore, the reciprocating sliding of the connecting rod 10 will simultaneously drive the push plate 9 to move left and right at the opening at the bottom of the funnel groove 8.

[0049] When the push plate 9 slides to the right, it gradually disengages from the opening of the funnel trough 8, opening the trough and allowing the fertilizer in the funnel trough 8 to fall into the water tank 5. When the push plate 9 slides to the left, it covers the opening again, preventing the fertilizer from falling. Through this reciprocating motion, the push plate 9 intermittently opens and closes the opening of the funnel trough 8, thereby quantitatively and intermittently delivering fertilizer from the fertilizer box 7 into the water tank 5. Compared with the existing technology that uses an electric push rod or electric screw to reciprocate and drive the push plate 9 to reciprocate and open or close the opening, the electric push rod driving the push plate 9 to reciprocate and open requires frequent adjustment of the extension and retraction of the electric push rod or electric screw by the controller. This not only requires a high degree of complexity in the programming logic of the controller, but also requires precise setting of parameters such as the time interval and travel distance of the electric push rod extension and retraction. Meanwhile, the electric actuator can start and stop 300-500 times per day. Frequent starts, stops, and direction changes significantly shorten its lifespan. Furthermore, during long-term, high-frequency operation, the mechanical wear of the electric actuator accelerates, requiring regular maintenance and replacement, increasing equipment operating costs and maintenance workload. This invention, however, eliminates the need for frequent start / stop and direction-changing commands from the controller. It only requires controlling the continuous and stable rotation of the dual-head DC motor 12 to achieve the reciprocating motion of the push plate 9. Simultaneously, the interval between the blocking openings of the push plate 9 can be easily adjusted using the adjustment components, flexibly adapting to different fertilizer delivery frequencies according to actual needs. This not only simplifies the control logic and reduces energy consumption and mechanical wear but also improves the adaptability and ease of operation of the device, effectively solving many shortcomings of existing electric actuator drive methods.

[0050] like Figure 3 and Figure 4 As shown, specifically, the adjustment component includes a roller 23 that rolls within the groove 21, and a traction rod 24 that rotates on one side wall of the roller 23; a fixing block 25 is fixedly welded to one side wall of the support rod 13, and a sliding hole is opened on the fixing block 25, with the traction rod 24 slidingly engaged with the sliding hole.

[0051] An electric control cylinder 26 is fixedly connected to the end of the traction rod 24 away from the roller 23 by screws. The end of the electric control cylinder 26 away from the traction rod 24 is fixedly connected to the inner wall of the drive box 4 by screws. The controller is used to control the extension and retraction of the electric control cylinder 26.

[0052] Combination Figure 4As shown, when it is necessary to adjust the frequency of the reciprocating movement of the push plate 9 to regulate the interval time of fertilizer intermittently falling into the water tank 5, the adjustment can be achieved by controlling the extension and retraction of the electric control cylinder 26 through the controller: when the electric control cylinder 26 extends and retracts, the traction rod 24 moves axially within the sliding hole of the fixed block 25. Since one end of the traction rod 24 is rotatably engaged with the roller 23, and the roller 23 is rolled and fitted into the groove 21 of the second wheel 20, the axial movement of the traction rod 24 will drive the roller 23 to push the second wheel 20 to slide axially along the rotating shaft 14 (when the traction rod 24 moves to the right, the roller 23 pulls the second wheel 20 to slide to the right; when the traction rod 24 moves to the left, the roller 23 pushes the second wheel 20 to slide to the left).

[0053] When the second wheel 20 slides along the axis of the rotating shaft 14, the radial tilt angle of the first wheel 15 is changed by the transmission rod 22: when the second wheel 20 slides 8mm to the right, the thrust of the transmission rod 22 on the first wheel 15 increases, making the radial tilt of the first wheel 15 more pronounced in a " / " shape, and its eccentric angle increases to 12°. At this time, the reciprocating motion amplitude of the push plate 9 increases, and the opening and closing interval time increases to 25s, so more fertilizer falls into the water tank 5 at a time. When the second wheel 20 slides 8mm to the left, the tilt of the first wheel 15 becomes gentler, and its eccentric angle decreases to 5°. At this time, the reciprocating motion amplitude of the push plate 9 decreases, and the opening and closing interval time is shortened to 15s, so less fertilizer falls into the water tank 5 at a time.

[0054] This adjustment allows for control of the interval between the intermittent blocking of the opening by the push plate 9, based on the crop's fertilizer requirements or irrigation rhythm. This, in turn, adjusts the frequency of fertilizer falling into the water tank 5 per unit time, enabling flexible control of the water-fertilizer ratio.

[0055] like Figure 3 As shown, specifically, the stirring assembly includes a stirring shaft 27 coaxially fixed to the end of the rotating shaft 14 away from the support rod 13 by bolts. The end of the stirring shaft 27 away from the rotating shaft 14 extends through the drive box 4 and the side wall of the water tank 5 into the water tank 5 and is provided with a plurality of stirring elements circumferentially. In this embodiment, the stirring elements are a plurality of stirring rods circumferentially fixedly welded to the side wall of the stirring shaft 27. A water supply assembly for supplying water to the water tank 5 is provided on the output shaft of the dual-head drive unit away from the support rod 13.

[0056] As shown in the diagram, when the rotating shaft 14 rotates, it drives the stirring shaft 27 to rotate synchronously. Since the stirring shaft 27 extends into the water tank 5 and has several stirring rods fixed circumferentially, the rotation of the stirring shaft 27 will cause all the stirring rods to make circular motions within the water tank 5. When fertilizer intermittently falls into the water tank 5 from the funnel trough 8, the rotating stirring rods will quickly and thoroughly mix the water and fertilizer to form a uniform water-fertilizer solution, avoiding fertilizer deposition at the bottom of the water tank 5, which would cause waste or uneven concentration. When the speed of the dual-head DC motor 12 is set to 150-200 r / min, the water flow velocity formed by the stirring rods in the water tank 5 can reach 0.8-1.2 m / s, which can completely dissolve 5-15g of fertilizer added at one time within 3-5 seconds. The water-fertilizer mixing uniformity reaches more than 95%, avoiding fertilizer deposition (the deposition amount can be controlled below 0.5%), effectively reducing the drip irrigation head clogging rate (the clogging rate is reduced from 8%-12% in traditional devices to 1%-2%).

[0057] Meanwhile, the mixing component and the drive component share the same power source. This design allows the fertilizer addition and solution mixing processes to be carried out in tank 5 each time fertilizer falls into the water tank. This ensures that the fertilizer added each time can be immediately mixed and dispersed, ensuring the stability of the water-fertilizer solution concentration in tank 5 and avoiding fertilizer crystallization that can clog the drip irrigation head due to uneven mixing.

[0058] like Figure 2 and Figure 3 As shown, specifically, the water supply assembly includes a water injection pipe 28 fixedly welded to and connected to the inner wall of the water tank 5, and a turntable 29 coaxially fixed to the output shaft of the dual-head DC motor 12 at the end away from the support rod 13 by bolts. A crank 30 is eccentrically hinged to the side wall of the turntable 29. A piston connecting rod 31 is hinged to the end of the crank 30 away from the turntable 29. A piston is fixedly connected to the end of the piston connecting rod 31 away from the crank 30 by screws. A piston cylinder 33 is fixedly connected to the top of the base 3 by bolts. The piston and the inner wall of the piston cylinder 33 slide in fit.

[0059] The bottom side wall of the piston cylinder 33 is connected to an inlet pipe 34 and an outlet pipe 35, both of which are connected to a first one-way valve. The outlet pipe 35 is connected to the water injection pipe 28, and the inlet pipe 34 is connected to a filter, the inlet of which is connected to a water source. The funnel trough 8 is equipped with an anti-clogging component to prevent fertilizer from clogging the opening.

[0060] Combination Figure 2 As shown, when the dual-head DC motor 12 starts, its output shaft at the end furthest from the support rod 13 will drive the turntable 29 to rotate synchronously. Since the crank 30 is eccentrically hinged to the side wall of the turntable 29, the rotational motion of the turntable 29 is converted into the reciprocating motion of the crank 30, thereby causing the piston to form a reciprocating linear motion up and down inside the piston cylinder 33.

[0061] When the piston moves upward within the piston cylinder 33, the internal space of the piston cylinder 33 increases, creating a negative pressure. This negative pressure draws water from the source, filtered by the filter, into the piston cylinder 33 through the inlet pipe 34. When the piston moves downward within the piston cylinder 33, the internal space decreases, increasing the pressure and creating a positive pressure. This positive pressure then transports the water within the piston cylinder 33 to the water tank 5 through the outlet pipe 35 and the inlet pipe 28, completing one water transfer cycle.

[0062] In the water delivery assembly, when the dual-head DC motor 12 rotates at 150 r / min, the turntable 29 drives the piston to reciprocate 30 times per minute. The piston cylinder 33 has a volume of 50 mL, allowing for a single water delivery of 50 mL and a stable hourly water delivery of 90 L. This meets the water replenishment needs of water tank 5 (capacity 500-1000 L), ensuring that the water level in water tank 5 is always maintained within a safe range of 30%-80%. Simultaneously, the filter uses a 100-120 mesh screen, achieving an interception rate of over 98% for impurities with a particle size ≥0.15 mm in the water source, further reducing the risk of drip head clogging.

[0063] like Figure 3 As shown, specifically, the anti-clogging component includes several air nozzles (not shown in the figure) fixedly connected to the inner wall of the funnel groove 8 by screws, and a piston rod 36 fixedly connected to the end of the connecting rod 10 away from the push plate 9 by screws. A cylinder 32 is fixedly connected to the inner wall of the drive box 4 by screws, and the piston rod 36 and the inner wall of the cylinder 32 slide together.

[0064] The cylinder 32 has an intake pipe and an outlet pipe connected to its side wall. Both the intake pipe and the outlet pipe are connected to a second one-way valve. The intake pipe is connected to the drive box 4. The nozzles are connected to the outlet pipe.

[0065] Combination Figure 3 As shown, when the connecting rod 10 slides back and forth, the end away from the push plate 9 will synchronously drive the piston rod 36 to reciprocate within the cylinder 32. When the connecting rod 10 slides to the left, the piston rod 36 moves to the left with the connecting rod 10, the internal space of the cylinder 32 increases, creating a negative pressure. The negative pressure inside the cylinder 32 will draw air from outside the drive box 4 into the cylinder 32 through the intake pipe.

[0066] When connecting rod 10 slides to the right (when push plate 9 disengages from the opening), piston rod 36 moves to the right with connecting rod 10. The internal space of cylinder 32 shrinks, increasing pressure and creating positive pressure. This positive pressure in cylinder 32 can transport the air in cylinder 32 through the air outlet pipe to each air nozzle in funnel trough 8. The air nozzles are positioned facing the opening at the bottom of funnel trough 8. The ejected airflow impacts the fertilizer accumulated at and near the opening, blowing away and clearing any clumps or accumulations, preventing fertilizer blockage at the opening, and ensuring that fertilizer can fall smoothly into water tank 5 each time push plate 9 opens. When the reciprocating stroke of connecting rod 10 is 15mm, the air pressure formed by piston rod 36 in cylinder 32 can reach 0.2 MPa, and the airflow velocity from the air nozzles reaches 15m / s. The impact force on the fertilizer at the opening of funnel trough 8 can reach 5 N, effectively blowing away fertilizer clumps with a particle size ≤5mm and reducing the problem of fertilization interruption caused by opening blockage.

[0067] like Figure 1 As shown, specifically, each branch pipe 2 is fixedly connected to a soil moisture sensor by screws. The controller receives the soil moisture signal sent by the soil moisture sensor and controls the rotation of the output shaft of the dual-head DC motor 12 and the operation of the pump assembly 11 based on the moisture signal. A water level sensor is fixedly connected to the inner wall of the water tank 5 by screws. The controller receives the water level signal in the water tank 5 sent by the water level sensor and controls the dual-head DC motor 12 and the pump assembly 11 to stop operating based on the water level signal.

[0068] Combination Figure 1 As shown, the controller has preset thresholds for a lower water level, an upper water level, high humidity, and low humidity. When the soil moisture signal received by the controller is lower than the low humidity threshold, it indicates that the soil in the crop growth area is short of water. At this time, the controller will automatically start the dual-head DC motor 12 and the pump assembly 11. The pump assembly 11 then pressurizes and delivers the water-fertilizer solution in the water tank 5 to each drip irrigation head through the main pipe 1 and the branch pipe 2 to achieve drip irrigation for the crops. As irrigation progresses, the soil moisture gradually increases. When the sensor detects that the humidity signal has reached the high humidity threshold, the controller will promptly stop the operation of the dual-head DC motor 12 and the pump assembly 11 to avoid water waste and achieve the water-saving effect of "on-demand irrigation". Meanwhile, when the controller receives a water level signal that reaches the upper limit threshold, the controller controls the pump assembly 11 to start running, and drips the mixed water-fertilizer solution in the water tank 5 through the drip irrigation head to lower the water level and prevent excessive water from overflowing the water tank 5. When the controller receives a water level signal that reaches the lower limit threshold, the controller shuts off the pump assembly 11. At this time, the water delivery assembly continues to replenish water to prevent the water tank 5 from running dry and causing the pump assembly 11 to burn dry, thereby further achieving the effect of water saving.

[0069] like Figure 3 and Figure 4As shown, in another embodiment, the first wheel 15 is circumferentially fixed with several blades 37 by screws, and symmetrically arranged communication holes are provided in the vertical direction between the side wall of the water tank 5 and the side wall of the drive box 4. The water tank 5 and the drive box 4 are connected through the communication holes, and a third one-way valve is connected in each of the communication holes.

[0070] The blades 37 are set to have 4 blades, and the diameter of the connecting hole is 20mm. When the first wheel 15 rotates, the circumferentially fixed blades 37 rotate synchronously with the first wheel 15, forming a directional airflow. Since the rotation speed of the first wheel 15 is consistent with that of the rotating shaft 14, when the speed of the dual-head DC motor 12 is 150-200 r / min, the airflow speed generated by the rotation of the blades 37 can reach 3 m / s, forming a stable positive pressure airflow in the drive box 4, with the pressure value maintained at 0.05-0.08 MPa. At this time, the positive pressure airflow in the drive box 4 is delivered to the inside of the water tank 5 through the third one-way valve in one of the connecting holes (the flow direction of the third one-way valve is from the drive box 4 into the water tank 5).

[0071] The airflow entering water tank 5 will form bubbles and disturbances in the water-fertilizer solution. Combined with the rotation and stirring of the stirring component, the water-fertilizer mixing effect is further improved: the stirring rod originally needs 3-5 seconds to achieve 95% uniformity of water-fertilizer. After adding airflow disturbance, the mixing time is shortened to 2-3 seconds. At the same time, it can effectively inhibit the deposition of fertilizer particles in the stirring dead corners (such as the corners and bottom edges of water tank 5).

[0072] This invention uses a drive component to reciprocate the sliding of a pusher plate 9, intermittently opening and closing the opening of the funnel trough 8. This allows fertilizer to fall into the water tank 5 in batches. Combined with a synchronously operating stirring component, each batch of fertilizer is thoroughly stirred, reducing the problem of incomplete fertilizer dissolution caused by continuous feeding, decreasing the probability of undissolved particles entering the drip irrigation system, and lowering the risk of drip head clogging. Furthermore, this invention achieves simultaneous fertilizer dispensing and stirring, eliminating the need for separate fertilizer dispensing and stirring drive devices. The dual functions are achieved through a single drive component, simplifying the overall structure of the equipment, reducing the probability of mechanical failure, decreasing energy consumption, and improving the economic efficiency and stability of the equipment.

[0073] This invention utilizes drip irrigation, which significantly reduces water consumption compared to traditional sprinkler irrigation. Furthermore, by dissolving fertilizer in water during drip irrigation and delivering it directly to the crop roots, it improves fertilizer utilization and saves on fertilizer usage, resulting in economic benefits.

[0074] Example 2: As shown in the attached document Figure 3As shown, the difference from Embodiment 1 is that the stirring component includes a main stirring rod fixedly welded to the side wall of the stirring shaft 27. An arc-shaped stirring plate is fixedly welded to the end of the main stirring rod away from the stirring shaft 27. The concave surface of the stirring plate faces the rotation direction of the stirring shaft 27, and several guide holes are opened on the side wall of the stirring plate.

[0075] When the arc-shaped stirring plate rotates with the stirring shaft 27, the concave surface can form a water vortex, which enhances the disturbance effect on the water-fertilizer solution in the water tank 5, making the fertilizer and water mix more thoroughly; the guide hole allows some water to pass through the stirring plate, reducing the stirring resistance while forming local turbulence, further improving the mixing uniformity, preventing fertilizer particles from settling at the bottom of the water tank 5, and ensuring that the water-fertilizer solution concentration is consistent.

[0076] Example 3: As shown in the attached document Figure 3 As shown, the difference from Embodiment 2 is that the stirring component includes a vertical stirring rod fixedly welded to the side wall of the stirring shaft 27, and a fan blade is rotatably fitted on the side wall of the vertical stirring rod, with the fan blade facing the direction of rotation of the stirring shaft 27.

[0077] When the vertical stirring rod rotates with the stirring shaft 27, the fan blades will rotate autonomously under the impact of the water flow, forming multi-directional water flow agitation and expanding the stirring range; the rotation of the fan blades can break the laminar flow state in the water tank 5, so that the water fertilizer solution at different depths can be fully mixed.

[0078] Obviously, the above embodiments are merely illustrative examples for clear explanation and are not intended to limit the implementation. Those skilled in the art will recognize that other variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. However, obvious variations or modifications derived therefrom are still within the scope of protection of this invention.

Claims

1. An agricultural water-saving drip irrigation device, comprising a main pipe (1), a plurality of branch pipes (2) connected to the main pipe (1), and a plurality of drip irrigation heads connected to each branch pipe (2), characterized in that, It also includes a controller and a base (3). The top of the base (3) is fixedly connected to a drive box (4) and a water tank (5). The bottom of the base (3) is fixedly connected to a support foot (6). The top of the water tank (5) is equipped with a fertilizer box (7). The bottom of the fertilizer box (7) is fixedly connected to the funnel groove (8), the bottom of the funnel groove (8) and the top of the water tank (5) are fixedly connected, and a push plate (9) is slidably fitted on the opening at the bottom of the funnel groove (8) to cover the opening; a connecting rod (10) is fixedly connected on the push plate (9), and the end of the connecting rod (10) away from the push plate (9) passes through the side wall of the water tank (5) and the drive box (4) and extends into the drive box (4). The connecting rod (10) is slidably fitted with the side wall of the water tank (5) and the drive box (4); The drive box (4) is equipped with a drive assembly for driving the connecting rod (10) to reciprocate and then drive the push plate (9) to intermittently block the opening; the water tank (5) is equipped with a stirring assembly for stirring the fertilizer and water entering the water tank (5), and the drive assembly is used to drive the stirring assembly to run. The main pipeline (1) is connected to the pump assembly (11), the inlet of the pump assembly (11) is connected to the bottom of the water tank (5), and the controller is used to control the operation of the pump assembly (11).

2. The agricultural water-saving drip irrigation device according to claim 1, characterized in that, The drive assembly includes a double-headed drive unit fixedly connected to the outer wall of the drive housing (4) and a support rod (13) fixedly connected to the inner bottom wall of the drive housing (4). The connecting rod (10) and the support rod (13) are slidably engaged. The controller is used to control the rotation of the output shaft of the double-headed drive unit. A rotating shaft (14) is rotatably fitted on the side wall of the support rod (13). The output shaft of one end of the double-headed drive unit extends through the side wall of the drive box (4) into the drive box (4) and is coaxially fixedly connected with the rotating shaft (14). A sliding groove (16) is symmetrically opened on the side wall of the rotating shaft (14). A first wheel (15) is fitted on the outer sleeve of the rotating shaft (14). The first wheel (15) is hinged to the middle of the sliding groove (16). A through groove is opened on the first wheel (15). The inner side walls of the through groove in both length directions are slidably fitted with the adjacent sliding groove (16). A sliding groove is opened circumferentially on the side wall of the first wheel (15). A ball (17) is rotatably fitted in the sliding groove. A support rod (18) is rotatably fitted on the ball (17). The end of the support rod (18) away from the ball (17) is fixedly connected to the bottom of the connecting rod (10). A flat key (19) is axially fixedly connected to the outer wall of the rotating shaft (14). A second wheel (20) is also sleeved on the outside of the rotating shaft (14). The second wheel (20) slides in conjunction with the rotating shaft (14) and the flat key (19). A circumferential groove (21) is opened on the side wall of the second wheel (20). A transmission rod (22) is hinged to one side wall of the first wheel (15), and the end of the transmission rod (22) away from the first wheel (15) is hinged to the side wall of the second wheel (20).

3. The agricultural water-saving drip irrigation device according to claim 2, characterized in that, The second disc (20) is equipped with an adjustment component for adjusting the interval time of the push plate (9) blocking the opening; The adjustment assembly includes a roller (23) that rolls within a groove (21), and a traction rod (24) that rotates on one side wall of the roller (23). A fixing block (25) is fixedly connected to one side wall of the support rod (13). A sliding hole is opened on the fixing block (25), and the traction rod (24) slides in the sliding hole. An electric control cylinder (26) is fixedly connected to the end of the traction rod (24) away from the roller (23). The end of the electric control cylinder (26) away from the traction rod (24) is fixedly connected to the inner wall of the drive box (4). The controller is used to control the extension and retraction of the electric control cylinder (26).

4. The agricultural water-saving drip irrigation device according to claim 1, characterized in that, The stirring assembly includes a stirring shaft (27) coaxially fixedly connected to the end of the rotating shaft (14) away from the support rod (13). The end of the stirring shaft (27) away from the rotating shaft (14) extends through the side wall of the drive box (4) and the water tank (5) into the water tank (5) and is provided with several stirring components in the circumference.

5. The agricultural water-saving drip irrigation device according to claim 2, characterized in that, The output shaft of the dual-head drive unit, away from the support rod (13), is equipped with a water supply assembly for supplying water to the water tank (5); The water supply assembly includes a water injection pipe (28) fixedly connected to the inner wall of the water tank (5), and a turntable (29) coaxially fixedly connected to the output shaft of the double-headed drive unit away from the support rod (13). A crank (30) is eccentrically hinged to the side wall of the turntable (29). A piston connecting rod (31) is hinged to the end of the crank (30) away from the turntable (29). A piston is fixedly connected to the end of the piston connecting rod (31) away from the crank (30). A piston cylinder (33) is fixedly connected to the top of the base (3). The piston and the inner wall of the piston cylinder (33) slide in fit. The bottom side wall of the piston cylinder (33) is connected to an inlet pipe (34) and an outlet pipe (35), and both the inlet pipe (34) and the outlet pipe (35) are connected to a first one-way valve; The outlet pipe (35) and the inlet pipe (28) are connected, the inlet pipe (34) is connected to a filter, and the inlet of the filter is connected to a water source.

6. The agricultural water-saving drip irrigation device according to claim 1, characterized in that, The funnel trough (8) is equipped with an anti-clogging component to prevent fertilizer from clogging the opening; The anti-blocking component includes several air nozzles fixedly connected to the inner wall of the funnel groove (8), and a piston rod (36) fixedly connected to the end of the connecting rod (10) away from the push plate (9). A cylinder (32) is fixedly connected to the inner wall of the drive box (4). The piston rod (36) and the inner wall of the cylinder (32) slide together. The cylinder (32) has an intake pipe and an exhaust pipe connected to its side wall. Both the intake pipe and the exhaust pipe are connected to a second one-way valve. The intake pipe is connected to the drive box (4) and the nozzle is connected to the exhaust pipe.

7. The agricultural water-saving drip irrigation device according to claim 1, characterized in that, Soil moisture sensors are fixedly connected to each branch pipe (2). The controller is used to receive soil moisture signals sent by the soil moisture sensors and control the rotation of the output shaft of the dual-head drive and the operation of the pump assembly (11) based on the moisture signals.

8. The agricultural water-saving drip irrigation device according to claim 1, characterized in that, A water level sensor is fixedly connected to the inner wall of the water tank (5). The controller is used to receive the water level signal in the water tank (5) sent by the water level sensor and control the pump assembly (11) to open and close based on the water level signal.

9. The agricultural water-saving drip irrigation device according to claim 4, characterized in that, The stirring component includes a main stirring rod fixedly connected to the side wall of the stirring shaft (27). An arc-shaped stirring plate is fixedly connected to the end of the main stirring rod away from the stirring shaft (27). The concave surface of the stirring plate faces the rotation direction of the stirring shaft (27), and several guide holes are opened on the side wall of the stirring plate.

10. The agricultural water-saving drip irrigation device according to claim 4, characterized in that, The stirring component includes a vertical stirring rod fixedly connected to the side wall of the stirring shaft (27), and a fan blade is rotatably fitted on the side wall of the vertical stirring rod, with the fan blade facing the direction of rotation of the stirring shaft (27).

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