Accurate water and fertilizer integrated equipment for wheat irrigation

Abstract

The invention discloses precise water and fertilizer integrated equipment for wheat irrigation, and particularly relates to the field of water and fertilizer irrigation equipment. Comprising a shell; the feeding hopper is communicated with the top of the shell; the water and fertilizer box is arranged in the shell, and the water and fertilizer box is communicated with the feeding hopper; the driving motor is arranged on the fertilizer water tank; the plurality of stirring shafts are arranged on an output shaft of the driving motor; the two axles are rotationally connected to the front side wall and the rear side wall of the shell; the four wheels are arranged at the two ends of the axle respectively; the water and fertilizer auxiliary uniform mixing mechanism is used for keeping uniform mixing of the fertilizer in the water and fertilizer box; the vacuum pump is arranged in the water and fertilizer box; the spray head is connected to the vacuum pump, and the other end of the spray head is located outside the shell. By adopting the technical scheme, the problem that the solution is layered after being placed for a long time in the existing water and fertilizer integrated equipment is solved, and the uniformity of water and fertilizer mixing is ensured.

Description

Technical Field

[0001] The present invention relates to the field of water and fertilizer irrigation equipment, and in particular to a precise water and fertilizer integrated equipment for wheat irrigation. Background Art

[0002] In the development of modern agriculture, integrated water and fertilizer technology has become one of the key means to improve agricultural production efficiency and ensure food security. As the most widely cultivated grain crop in the world, the yield and quality of wheat are directly related to the stability of the food supply. In traditional wheat cultivation, irrigation and fertilization are usually carried out in a step-by-step operation mode: irrigation is completed through furrow irrigation, flooding, etc., while fertilization relies on manual broadcasting or mechanical burial. This separate operation method not only leads to low water and fertilizer utilization efficiency, but also causes a series of environmental problems such as soil compaction, nutrient loss, and groundwater pollution due to excessive irrigation or uneven fertilization. With the promotion of integrated water and fertilizer technology, the synchronization of irrigation and fertilization through equipment integration has become a technological development trend in the wheat cultivation field.

[0003] Existing integrated water and fertilizer systems typically consist of a liquid storage system, a mixing system, a delivery system, and an application terminal. The core principle is to mix water-soluble fertilizer with water in a suitable proportion and then deliver it directly to the crop root zone via drip, sprinkler, or micro-sprinkler irrigation systems. This technology significantly improves the efficiency of water-fertilizer coupling. For example, drip irrigation systems deliver water and fertilizer directly to the soil at the crop root zone, reducing surface runoff and evaporation losses. Sprinkler irrigation systems, on the other hand, use atomizing nozzles to achieve uniform coverage, adapting to the needs of large-scale planting.

[0004] In actual application, existing equipment still faces the following technical bottleneck: the problem of stratification of fertilizer solution after long-term storage. During the operation of water-fertilizer integrated equipment, solid fertilizer needs to be mixed with water to form a homogeneous solution. However, most water-soluble fertilizers (such as urea, diammonium phosphate, potash fertilizer, etc.) have different densities. When standing still in the equipment storage tank, the fertilizer particles with higher density tend to settle to the bottom of the tank, while the components with lower density float to form stratification. For example, the density of diammonium phosphate is about 1.6g / cm 3 , while the density of urea is only 1.33g / cm 3 After mixing the two and letting them sit for more than two hours, distinct stratification will occur. This stratification leads to uneven solution concentration during irrigation: insufficient fertility in the initial irrigation solution, and later, direct root contact with high-concentration fertilizer can cause seedling burn. Fertilizer fluctuations during critical stages of wheat fertilizer demand, such as the greening and jointing stages, can directly affect tillering number and grain development, ultimately leading to yield declines.

[0005] Existing technologies address fertilizer stratification by adding agitators or using circulating pumps to maintain solution homogeneity. However, these agitators are prone to wear and high energy consumption, and the circulation system can accelerate the refinement of fertilizer particles, increasing the risk of pipe blockage. Therefore, developing integrated water and fertilizer equipment for wheat that can address the problem of fertilizer stratification over time has become a pressing technological breakthrough in the agricultural equipment sector. Summary of the Invention

[0006] The present invention aims to provide a precise integrated water and fertilizer equipment for wheat irrigation, which solves the problem of solution stratification caused by long-term storage in existing integrated water and fertilizer equipment.

[0007] In order to achieve the above object, the technical solution of the present invention is as follows: a precise water-fertilizer integrated device for wheat irrigation, comprising:

[0008] case;

[0009] A feed hopper connected to the top of the shell;

[0010] A water and fertilizer tank is arranged in the housing and is connected to the feed hopper;

[0011] A driving motor, wherein the driving motor is arranged on the fertilizer water tank;

[0012] A plurality of stirring shafts, wherein the plurality of stirring shafts are arranged on the output shaft of the driving motor;

[0013] Two axles, the two axles being rotatably connected to the front and rear side walls of the housing;

[0014] Four wheels, the four wheels are respectively arranged at both ends of the axle;

[0015] A water-fertilizer auxiliary mixing mechanism, which is used to keep the fertilizers in the water-fertilizer tank evenly mixed;

[0016] A vacuum pump is arranged in the water-fertilizer tank and outside the stirring shaft;

[0017] The nozzle is connected to the vacuum pump, and the other end of the nozzle is located outside the shell.

[0018] Furthermore, the water-fertilizer auxiliary mixing mechanism includes:

[0019] An air blowing pipe, the air blowing pipe being connected to the upper side of the water and fertilizer tank;

[0020] An expansion tube, which is arranged at one end of the air blowing tube and is trumpet-shaped, and the minimum diameter of the expansion tube is equal to the inner diameter of the air blowing tube;

[0021] A suction pipe, one end of which is connected to the air blowing pipe, and the other end of which is freely hanging down and close to the bottom of the water and fertilizer tank;

[0022] The blowing component can quickly blow air into the blowing pipe.

[0023] Furthermore, the blowing assembly includes a cam, which is covered on the axle, and a push rod is abutted on the cam, and a push plate is provided on the push rod. The push plate and the inner wall of the water and fertilizer tank and the shell are enclosed to form a sealed cavity, and the push plate is slidably connected in the sealed cavity. The upper side of the sealed cavity is connected to an air intake pipe, and a first one-way valve is provided on the air intake pipe, and a second one-way valve is provided on the blowing pipe.

[0024] Through the above arrangement, when the wheel drives the axle to rotate (that is, when the device is moving), the axle can drive the cam to rotate, and after the cam rotates, it drives the push plate to slide back and forth up and down through the push rod. When the push plate slides upward, the push plate can compress the space above the push plate, so that the air in this space quickly flows into the air blowing pipe and is blown out through the expansion pipe. During the rapid flow of air, pressure is generated at the connection between the suction pipe and the air blowing pipe, and negative pressure is used to suck the water and fertilizer in the water and fertilizer tank into the suction pipe, and spray it out through the air blowing pipe and the expansion pipe, so that the water and fertilizer in the water and fertilizer tank can always be in circulation during the movement of the device, avoiding the situation where the water and fertilizer are not used for a long time after mixing and stratification, and at the same time, the efficiency of water and fertilizer mixing can be improved.

[0025] Furthermore, a partition plate is provided in the sealed cavity, and the bottom of the partition plate is close to the blowing pipe.

[0026] Furthermore, a return spring is connected between the push plate and the partition plate.

[0027] This arrangement reduces the volume of the sealed chamber thanks to the partition plate, allowing air to enter the blowpipe immediately when the push plate moves upward, improving mixing efficiency. Furthermore, the return spring's force ensures contact between the push plate and the cam as it moves downward, ensuring consistent movement between the cam and push rod and enhancing the reliability of this solution.

[0028] Furthermore, the multiple stirring shafts are commonly connected to a rotating shaft, and the lengths of the multiple stirring shafts are different. The stirring shafts with shorter lengths are arranged on the upper side of the rotating shaft and will not interfere with the suction tube during movement. The stirring shafts with longer lengths are arranged on the lower side of the rotating shaft and can push the suction tube to move during movement.

[0029] Furthermore, a filter box is provided in the shell, the left and right sides of the filter box are connected between the two expansion tubes, the top of the filter box is connected to the feed hopper, and the bottom of the filter box is provided with a feeding port, and two filter screens are rotatably connected to the feeding port. The two filter screens can close the feeding port, and a torsion spring is connected between each filter screen and the filter box.

[0030] Through the above-mentioned setting, with the help of the filter net, impurities or undissolved particles appearing in the water-fertilizer mixing process can be taken up without affecting the feeding, thereby reducing the probability of blockage of the equipment. At the same time, the water and fertilizer are sprayed into the filter box using the air pipe and the expansion pipe. For the fertilizer particles that have not been completely dissolved, these fertilizer particles fall on the filter net. At this time, the dissolution can be accelerated with the help of the impact of water or water-fertilizer, which is beneficial to improving the dissolution effect of the fertilizer.

[0031] Furthermore, two inclined plates are provided at the connection between the shell and the feed hopper, and the lower side of each inclined plate faces the upper side of the opening of the expansion tube.

[0032] Through the above arrangement, the two inclined plates can reduce the spraying range of the water-fertilizer solution sprayed out of the expansion tube, and it is also beneficial for the water-fertilizer to gather and dissolve the undissolved fertilizer particles again.

[0033] Compared with the existing technology, this solution has the following beneficial effects:

[0034] 1. This invention utilizes a water-fertilizer auxiliary mixing mechanism, utilizing the mechanical energy of the axle's rotation during the equipment's operation to drive air flow. This creates a negative pressure effect between the air blowing pipe and the expansion tube, forcing the solution in the water and fertilizer tank to circulate. This dynamic mixing mechanism effectively prevents the settling and floating of fertilizer particles of varying densities, such as diammonium phosphate and urea, ensuring uniform solution concentration throughout the irrigation process. This ensures a stable nutrient supply during the critical wheat fertilizer-demanding period, avoiding the fertility fluctuations caused by stratification in traditional equipment.

[0035] 2. This invention breaks away from existing technologies that rely on continuous stirring or circulating pumps to maintain homogenization. Instead, it converts the kinetic energy of the device's movement into mixing power. As the wheel rotates, a cam mechanism drives a push rod to pulse air from the sealed chamber into the blowpipe, creating a negative pressure suction effect using the Venturi effect. This structural design completely eliminates the need for an additional power source, significantly reducing energy consumption compared to traditional stirring devices and eliminating maintenance costs associated with abrasive shaft wear. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 This is an axonometric view of a precise water-fertilizer integrated device for wheat irrigation according to the present invention;

[0037] Figure 2 This is a front view of a precision water-fertilizer integrated device for wheat irrigation according to this embodiment;

[0038] Figure 3 yes Figure 2 Cross-sectional view of AA;

[0039] Figure 4This is a top view of a precise water-fertilizer integrated device for wheat irrigation according to the present invention;

[0040] Figure 5 Yes Figure 4 Cross-sectional view of the middle BB;

[0041] Figure 6 Yes Figure 4 Cross-sectional view of CC.

[0042] The figure marks in the drawings of the specification include: shell 1, push handle 2, feed hopper 3, cover plate 4, water and fertilizer tank 5, tilting plate 6, drive motor 7, rotating shaft 8, stirring shaft 9, controller 10, axle 11, wheel 12, blowing pipe 13, expansion pipe 14, filter box 15, filter screen 16, suction pipe 17, cam 18, push rod 19, push plate 20, partition plate 21, return spring 22, air inlet pipe 23, first one-way valve 24, second one-way valve 25, vacuum pump 26, nozzle 27. DETAILED DESCRIPTION

[0043] The present invention will be further described in detail below through specific embodiments:

[0044] Example

[0045] like Figures 1 to 6 As shown, a precision water-fertilizer integrated equipment for wheat irrigation includes:

[0046] The shell 1 has a push handle 2 welded to the lower left side of the shell 1 .

[0047] The feed hopper 3 is connected to the top center of the shell 1. The top center of the shell 1 has an opening, and two inclined plates 6 are welded to the opening. The lower side of each inclined plate 6 faces the upper side of the opening of the expansion tube 14, and a gap is left between the two inclined plates 6. The feed hopper 3 is covered with a cover plate 4.

[0048] The water and fertilizer tank 5 is arranged in the shell 1 and is communicated with the feed hopper 3.

[0049] The drive motor 7 is bolted to the bottom center of the fertilizer water tank. A through hole is provided in the bottom center of the fertilizer water tank 5 for the output shaft of the drive motor 7 to pass through. The output shaft of the drive motor 7 is rotatably and sealedly connected to the through hole. The output shaft of the drive motor 7 is coaxially connected to the rotating shaft 8 located in the fertilizer water tank 5. The drive motor 7 of this embodiment is also electrically connected to the controller 10, which is disposed on the left side of the housing 1.

[0050] Six stirring shafts 9 are circumferentially distributed on the rotating shaft 8. The six stirring shafts 9 have different lengths. Each group of three stirring shafts 9 has the same length, and the stirring shafts 9 in two groups have different lengths. The three shorter stirring shafts 9 are welded to the upper side of the rotating shaft 8 and do not interfere with the suction tube 17 during movement. The three longer stirring shafts 9 are welded to the lower side of the rotating shaft 8 and can push the suction tube 17 during movement.

[0051] Two axles 11 are rotatably connected to the front and rear side walls of the housing 1 , and corresponding positions on the front and rear sides of the housing 1 are provided with through holes for the axles 11 to pass through.

[0052] Four wheels 12 are respectively provided at both ends of the axle 11 .

[0053] The water-fertilizer auxiliary mixing mechanism is used to keep the fertilizers in the water-fertilizer tank 5 evenly mixed. In this embodiment, there are two water-fertilizer auxiliary mixing mechanisms, which are respectively arranged on the left and right sides of the water-fertilizer tank 5. Each water-fertilizer auxiliary mixing mechanism includes:

[0054] The air blowing pipe 13 is communicated with the upper side of the water-fertilizer box 5. The left and right sides of the water-fertilizer box 5 are provided with air blowing holes communicated with the air blowing pipe 13. The diameter of the air blowing hole is the same as the inner diameter of the air blowing pipe 13.

[0055] The expansion tube 14 is fixedly arranged at the other end of the air blowing tube 13 and is located in the water and fertilizer tank 5. The expansion tube 14 is trumpet-shaped, and the minimum diameter of the expansion tube 14 is equal to the inner diameter of the air blowing tube 13. In this embodiment, a filter box 15 is also provided in the housing 1, and the left and right sides of the filter box 15 are connected between the two expansion tubes 14. The bottom of the filter box 15 is provided with an opening, and the size of the opening is the same as the opening size of the housing 1. The top of the filter box 15 is connected to the feed hopper 3, and the bottom of the filter box 15 is provided with a feeding port, and two filter screens 16 are rotatably connected at the feeding port. The front and rear sides of the two filter screens 16 are fixedly connected with a pin, and the pin is embedded in the front and rear side walls of the filter box 15. The filter box 15 is provided with four placement holes for the pins to be placed. A torsion spring is connected between each pin and the inner wall of the placement hole. When the two filter screens 16 maintain horizontal contact, the feeding port can be closed.

[0056] The suction pipe 17 has its upper end communicated with the air blowing pipe 13 , and its lower end hangs freely and is close to the bottom of the water-fertilizer tank 5 .

[0057] The air blowing assembly is capable of rapidly blowing air into the air blowing tube 13. The air blowing assembly includes two cams 18, spaced apart and covering the front and rear sides of the axle 11. The outer surface of each cam 18 abuts a vertically arranged push rod 19. A push plate 20 is attached to the top of each push rod 19. The push plate 20, together with the inner walls of the water and fertilizer tank 5 and the housing 1, forms a sealed chamber. A partition plate 21 is provided within the sealed chamber, with the bottom of the partition plate 21 abutting the air blowing tube 13. This partition plate 21 reduces the volume of the sealed chamber, facilitating the rapid entry of air from the sealed chamber into the air blowing tube 13. The push plate 20 is slidably connected within the sealed chamber, with a return spring 22 connected between the push plate 20 and the partition plate 21. An air inlet pipe 23 is connected to the upper side of the sealed chamber. A first one-way valve 24, located outside the housing 1, is mounted on the air inlet pipe 23. A second one-way valve 25, located inside the water and fertilizer tank 5, is mounted on the air blowing tube 13.

[0058] A vacuum pump 26 is provided in the water-fertilizer tank 5 and outside the stirring shaft 9;

[0059] The nozzle 27 is connected to the vacuum pump 26 , and the other end of the nozzle 27 is located outside the housing 1 .

[0060] The engineering process of this embodiment is as follows:

[0061] First, open the cover 4 and add an appropriate amount of fertilizer to the feed hopper 3. The fertilizer, guided by the inclined plate 6, collects in the middle of the two filters 16. The weight of the fertilizer twists the torsion spring and the pin, allowing the fertilizer to enter the water-fertilizer tank 5. Once all or most of the fertilizer has entered the water-fertilizer tank 5, the filter 16 and the pin return to their original position under the action of the torsion spring, sealing the feed opening. Then, add an appropriate amount of clean water to the feed hopper 3. Once the clean water has been injected, close the cover 4 and use the push handle 2 to move the device to the desired position for irrigation.

[0062] During the movement of the equipment, the drive motor 7 is simultaneously turned on by the controller 10. After the drive motor 7 is turned on, the drive motor drives the six stirring shafts 9 to rotate through the rotating shaft 8. At this time, the fertilizer and clean water are stirred and mixed with the help of the six stirring shafts 9, and the three stirring shafts 9 located on the lower side can drive the lower end of the suction tube 17 to move a distance. After stirring for a predetermined time, the drive motor 7 is turned off. During the movement of the equipment, the wheel 12 can drive the axle 11 and the cam 18 to rotate. After the cam 18 rotates, it can push the push rod 19 and the push plate 20 to move back and forth up and down. At this time, the return spring 22 can keep the push plate 20 moving downward so that it can move in real time with the outer surface of the cam 18.

[0063] When the cam 18 drives the push rod 19 and the push plate 20 to move upward, the push plate 20 can compress the space of the sealed cavity, so that the air in the sealed cavity can quickly enter the expansion tube 14 through the blowing tube 13. At this time, the connection between the blowing tube 13 and the suction tube 17 generates negative pressure suction due to the rapid flow of air in the blowing tube 13. The negative pressure suction is used to suck the solution at the bottom of the water fertilizer tank 5 into the expansion tube 14, and the bottom of the suction tube 17 is pushed by the stirring shaft 9, so that the bottom of the suction tube 17 can move within a range, thereby expanding the absorption range of the solution and enhancing the circulation efficiency of the solution. At the same time, the air and solution ejected through the air blowing pipe 13 and the expansion pipe 14 will be quickly sprayed into the filter box 15. The tilted plate 6 can be used to prevent the quickly ejected solution from entering the feed hopper 3, while keeping the solution gathered in the middle of the filter box 15. The sprayed solution can quickly rinse and dissolve the fertilizer that has not fallen into the water fertilizer box 5 on the filter plate, and can bring the undissolved impurities or particulate matter in the solution into the filter box 15 and be filtered out by the filter screen 16, thereby effectively screening out impurities and avoiding impurities from entering the vacuum pump 26 and causing the vacuum pump 26 to be blocked. This embodiment circulates through the suction pipe 17, the air blowing pipe 13, and the expansion pipe 14, thereby maintaining the homogeneity of the solution and avoiding the problem of stratification of the solution. Finally, the evenly mixed water fertilizer solution is sprayed out using the vacuum pump 26 and the nozzle 27.

[0064] When the cam 18 drives the push rod 19 and the push plate 20 to move downward, the push plate 20 moves downward under the action of the return spring 22. At this time, the space of the sealed cavity becomes larger, so that air is sucked into the sealed cavity through the air intake pipe 23, thereby replenishing the air in the sealed cavity.

[0065] This solution can achieve water-fertilizer solution homogenization without active driving force by driving the wheels 12 and the axle 11 during the movement of the equipment, saving energy. At the same time, it can quickly keep the water-fertilizer solution homogenous during the movement, and can quickly achieve rapid homogenization of the water-fertilizer solution after a long period of non-use, thereby ensuring the efficiency of irrigation.

[0066] The above are only embodiments of the present invention, and common knowledge such as the specific structure and / or characteristics of the scheme are not described in detail here. It should be pointed out that for those skilled in the art, without departing from the structure of the present invention, several variations and improvements can be made, which should also be regarded as the scope of protection of the present invention, and these will not affect the effect of the implementation of the present invention and the practicality of the patent. The scope of protection required by this application shall be based on the content of its claims, and the specific implementation methods and other records in the specification can be used to interpret the content of the claims.

Claims

1. A precision water-fertilizer integrated equipment for wheat irrigation, characterized in that: include: Housing (1); A feed hopper (3), the feed hopper (3) being connected to the top of the housing (1); A water and fertilizer tank (5), the water and fertilizer tank (5) being arranged in the housing (1) and being in communication with the feed hopper (3); A drive motor (7), wherein the drive motor (7) is arranged on the fertilizer water tank; A plurality of stirring shafts (9), wherein the plurality of stirring shafts (9) are arranged on the output shaft of the driving motor (7); Two axles (11), the two axles (11) being rotatably connected to the front and rear side walls of the housing (1); Four wheels (12), wherein the four wheels (12) are respectively arranged at both ends of the axle (11); A water-fertilizer auxiliary mixing mechanism, the water-fertilizer auxiliary mixing mechanism is used to maintain a uniform mixture of fertilizers in the water-fertilizer tank (5); A vacuum pump (26), the vacuum pump (26) being arranged in the water-fertilizer tank (5) and outside the stirring shaft (9); A nozzle (27), wherein the nozzle (27) is connected to the vacuum pump (26), and the other end of the nozzle (27) is located outside the housing (1).

2. The precise water-fertilizer integrated equipment for wheat irrigation according to claim 1, characterized in that: The water-fertilizer auxiliary mixing mechanism comprises: An air blowing pipe (13), wherein the air blowing pipe (13) is connected to the upper side of the water and fertilizer tank (5); An expansion tube (14), the expansion tube (14) being arranged at one end of the blowing tube (13), the expansion tube (14) being trumpet-shaped, and the minimum diameter of the expansion tube (14) being equal to the inner diameter of the blowing tube (13); A suction pipe (17), one end of which is connected to the air blowing pipe (13), and the other end of which is freely hanging down and close to the bottom of the water fertilizer tank (5); A blowing assembly is provided, wherein the blowing assembly can quickly blow air into the blowing pipe (13).

3. The precise water-fertilizer integrated equipment for wheat irrigation according to claim 2, characterized in that: The blowing assembly comprises a cam (18), the cam (18) being covered on the axle (11), the cam (18) being in contact with a push rod (19), the push rod (19) being provided with a push plate (20), the push plate (20) and the inner wall of the water and fertilizer tank (5) and the shell (1) being enclosed to form a sealed cavity, the push plate (20) being slidably connected in the sealed cavity, the upper side of the sealed cavity being connected to an air intake pipe (23), the air intake pipe (23) being provided with a first one-way valve (24), and the blowing pipe (13) being provided with a second one-way valve (25).

4. The precise water-fertilizer integrated equipment for wheat irrigation according to claim 3, characterized in that: A partition plate (21) is provided in the sealed cavity, and the bottom of the partition plate (21) is close to the air blowing pipe (13).

5. The precise water-fertilizer integrated equipment for wheat irrigation according to claim 4, characterized in that: A return spring (22) is connected between the push plate (20) and the partition plate (21).

6. A precise water-fertilizer integrated device for wheat irrigation according to any one of claims 2 to 5, characterized in that: The plurality of stirring shafts (9) are commonly connected to the rotating shaft (8). The plurality of stirring shafts (9) have different lengths. The stirring shafts (9) with shorter lengths are arranged on the upper side of the rotating shaft (8) and do not interfere with the suction tube (17) when moving. The stirring shafts (9) with longer lengths are arranged on the lower side of the rotating shaft (8) and can push the suction tube (17) to move when moving.

7. The precise water-fertilizer integrated equipment for wheat irrigation according to claim 2, characterized in that: A filter box (15) is further provided in the housing (1), the left and right sides of the filter box (15) are connected between the two expansion tubes (14), the top of the filter box (15) is connected to the feed hopper (3), and the bottom of the filter box (15) is provided with a feeding port, and two filter screens (16) are rotatably connected to the feeding port. The two filter screens (16) can close the feeding port, and a torsion spring is connected between each filter screen (16) and the filter box (15).

8. The precise water-fertilizer integrated equipment for wheat irrigation according to claim 2, characterized in that: Two inclined plates (6) are provided at the connection between the shell (1) and the feed hopper (3), and the lower side of each inclined plate (6) faces the upper side of the opening of the expansion tube (14).

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