Agricultural drip irrigation equipment

Abstract

The utility model belongs to the technical field of agricultural irrigation, and particularly discloses agricultural drip irrigation equipment which comprises a main pipeline, one end of the main pipeline is connected with a water storage tank through a water suction pump, the other end of the main pipeline is connected with a buffer water tank, one side of the main pipeline is connected with a bypass pipeline through a three-way pipe, and the bypass pipeline is connected with a water and fertilizer tank through a water suction pipe; the bottom of the buffer water tank is connected with a plurality of drip irrigation pipelines through drip irrigation connecting valves, the drip irrigation pipelines are arranged in a crop drip irrigation area, the end, away from the buffer water tank, of each drip irrigation pipeline is blocked, and a plurality of connecting holes are formed in the drip irrigation pipelines and used for being connected with drip irrigation bodies. The water storage tank and the water and fertilizer tank are connected through the main pipeline and the bypass pipeline respectively, water and fertilizer integrated irrigation is achieved, the buffer water tank is arranged at the tail end of the main pipeline, it is guaranteed that water and fertilizer are fully mixed, meanwhile, it is guaranteed that the pressure flow of water and fertilizer mixed liquid entering all drip irrigation pipelines is the same, and the problem of uneven drip irrigation is avoided.

Description

Technical Field

[0001] This utility model belongs to the field of agricultural irrigation technology, and specifically relates to an agricultural drip irrigation device. Background Technology

[0002] With the continuous development of agricultural water-saving technologies, drip irrigation systems have been widely used due to their high efficiency and water-saving characteristics. Agricultural drip irrigation precisely delivers water and fertilizer to the roots of crops through pipeline systems and drippers, achieving localized irrigation. In water-scarce areas, its high efficiency, water saving, and increased yield and income provide strong support for sustainable agriculture. Traditional drip irrigation equipment often adopts an integrated water and fertilizer design, using pumps to deliver premixed fertilizer solutions to the drip irrigation network.

[0003] Chinese patent CN220654047U discloses a water and fertilizer integrated irrigation system. It ensures the uniformity of water and fertilizer mixing by using two mixing tanks and two water supply pipes corresponding to the mixing tanks. However, in this solution, multiple drip irrigation tapes are led out through the water supply pipes, making it difficult to ensure that the water flow and water pressure entering each drip irrigation tape are the same, resulting in uneven drip irrigation of crops. Utility Model Content

[0004] The purpose of this invention is to overcome the defects in the existing technology and provide an agricultural drip irrigation device.

[0005] This utility model provides an agricultural drip irrigation device, including a main pipeline. One end of the main pipeline is connected to a water storage tank via a water pump, and the other end of the main pipeline is connected to a buffer water tank. A bypass pipeline is connected to one side of the main pipeline via a T-junction pipe. The bypass pipeline is connected to a water and fertilizer tank via a pumping pipe, which is used to pump water and fertilizer to the main pipeline and mix it with the irrigation water in the water storage tank in the buffer water tank.

[0006] The bottom of the buffer tank is connected to several drip irrigation lines via drip irrigation connection valves. The drip irrigation lines are laid in the drip irrigation area of ​​the crops. The end of each drip irrigation line away from the buffer tank is sealed and several connection holes are opened on the drip irrigation line for connecting to the drip irrigation body.

[0007] A further embodiment is that a first water control valve is installed on the main pipeline, and a second water control valve and a third water control valve are respectively installed at both ends of the bypass pipeline;

[0008] The first water control valve is located on the main pipeline between the two ends of the bypass pipeline.

[0009] A further embodiment is that a Venturi tube is provided on the bypass pipeline, and the Venturi tube includes a constriction section, a throat section, and a diffuser section connected sequentially along the water flow direction;

[0010] The contraction section is connected to the pumping pipe, and a throttling valve is also installed on the pumping pipe;

[0011] Both the contraction section and the diffusion section have trapezoidal cross-sections, and the two ends of the throat are connected to the small openings of the contraction section and the diffusion section, respectively.

[0012] The contraction section is connected to the bypass pipe through the inlet pipe, and the diffusion section is connected to the bypass pipe through the outlet pipe. A first flow meter is installed on the inlet pipe, and a second flow meter is installed on the outlet pipe.

[0013] A further embodiment is that an acceleration tube is also provided inside the contraction section, one end of which is connected to the end of the contraction section, and the other end of the acceleration tube has a reduced diameter and extends to the pumping pipe.

[0014] A further option is to install a level gauge on the outside of the buffer tank.

[0015] A further embodiment is that the drip irrigation body includes a connecting seat and a drip irrigation head, the connecting seat being threadedly connected to the drip irrigation head; the drip irrigation head has an inner tube inside, and several drip irrigation grooves are evenly opened at the bottom of the drip irrigation head;

[0016] The connector is provided with knob handles on both sides of the top, and a connector is provided at the center of the top for connecting with the connecting hole. A drainage tube is provided inside the connector. The drainage tube and the inner tube are coaxially arranged, and the outer diameter and length of the drainage tube are adapted to the inner tube, so that the drainage tube is inserted into the inner tube without abutting the bottom of the inner tube when the connector and the drip head are connected, and an annular overflow zone is formed between the inner tube and the drainage tube.

[0017] A further embodiment is that a filter screen is provided in the annular overflow area. The filter screen has an annular structure, with its outer edge engaging with the inner wall of the inner tube, and its inner diameter being adapted to the drainage tube.

[0018] A further embodiment is that the water and fertilizer tank has a first feed inlet and a second feed inlet on both sides of the top, which are used for adding water and fertilizer respectively. A stirring motor is set at the center of the top of the water and fertilizer tank, and a stirring rod is set inside the water and fertilizer tank. The output end of the stirring motor is connected to the stirring rod.

[0019] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0020] (1) This utility model connects the water storage tank and the water and fertilizer tank through the main pipeline and the bypass pipeline respectively, realizing integrated water and fertilizer irrigation. A buffer water tank is set at the end of the main pipeline to ensure that the water and fertilizer are fully mixed and that the pressure and flow rate of the water and fertilizer mixture entering each drip irrigation pipeline are the same, thus avoiding the problem of uneven drip irrigation.

[0021] (2) This utility model is equipped with multiple water control valves. Different scenario requirements can be achieved by opening or closing different water control valves. For example, when fertilization is not required, the second and third water control valves can be closed and the first water control valve can be opened. When fertilization is required, the first water control valve can be closed and the second and third water control valves can be opened.

[0022] (3) The pumping pipe of this utility model is connected to the Venturi tube, and an acceleration pipe with a reduced diameter is set in the contraction section. Irrigation water flows in from the inlet pipe, accelerates and reduces pressure through the acceleration pipe and the contraction section, forms negative pressure in the throat, and sucks in the fertilizer in the water-fertilizer tank through the pumping pipe. After mixing, it enters the diffusion section, where the flow rate decreases and the pressure recovers, and finally outputs the mixed fluid, realizing the dual functions of transportation and mixing.

[0023] (4) The present invention has a liquid level gauge on the outside of the buffer water tank, which can open the drip irrigation connection valve in a timely and synchronous manner according to the liquid level of the buffer water tank, so that the water and fertilizer flow rate and pressure entering each drip irrigation pipeline are the same, further ensuring the uniformity of drip irrigation.

[0024] (5) The drip irrigation body of this utility model is equipped with an inner tube. Water and fertilizer flow into the inner tube through the diversion pipe, flow out from the annular overflow area and finally drip from the drip irrigation trough naturally and evenly, avoiding excessive water pressure that could impact the crops. A filter screen is also installed inside the inner tube to effectively prevent the drip irrigation trough from becoming clogged. Attached Figure Description

[0025] The following figures are for illustrative purposes only and are not intended to limit the scope of the present invention.

[0026] Figure 1 : Schematic diagram of the connection structure of this utility model;

[0027] Figure 2 Schematic diagram of a Venturi tube structure;

[0028] Figure 3 Schematic diagram of the drip irrigation system structure;

[0029] Figure 4 Schematic diagram of the internal structure of the drip irrigation system;

[0030] In the diagram: 1. Water storage tank; 2. Water pump; 3. Main pipeline; 4. First control valve; 5. Bypass pipeline; 6. Second control valve; 7. Third control valve; 8. Venturi tube; 9. First flow meter; 10. Second flow meter; 11. Pumping pipe; 12. Throttling valve; 13. Water and fertilizer tank; 14. Agitator motor; 15. Agitator rod; 16. First feed inlet; 17. Second feed inlet; 18. Buffer water. 19. Liquid level gauge; 20. Drip irrigation connection valve; 21. Connection hole; 22. Drip irrigation pipeline; 23. Drip irrigation body; 24. Contraction section; 25. Throat; 26. Diffusion section; 27. Inlet pipe; 28. Outlet pipe; 29. ​​Acceleration pipe; 30. Knob handle; 31. Connector; 32. Drip irrigation head; 33. Connecting seat; 34. Drainage pipe; 35. Drip irrigation trough; 36. Inner pipe; 37. Filter screen. Detailed Implementation

[0031] To make the objectives, technical solutions, design methods, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are for illustrative purposes only and are not intended to limit the scope of this utility model.

[0032] like Figure 1 As shown, this utility model provides an agricultural drip irrigation device, including a main pipeline 3. One end of the main pipeline 3 is connected to a water storage tank 1 via a water pump 2, and the main pipeline 3 extends into the water storage tank 1. The water storage tank 1 is connected to an external water inlet pipe to ensure the continuity of drip irrigation. The other end of the main pipeline 3 is connected to a buffer water tank 18. One side of the main pipeline 3 is connected to a bypass pipeline 5 via a T-junction pipe. The bypass pipeline 5 is connected to a water and fertilizer tank 13 via a water pumping pipe 11, which is used to pump water and fertilizer to the main pipeline 3 and mix them with the irrigation water in the water storage tank 1 in the buffer water tank 18. At the bottom of the buffer water tank 18, multiple drip irrigation pipelines 22 are connected via a drip irrigation connection valve 20. The drip irrigation pipelines 22 are laid in the drip irrigation area of ​​the crops. The end of each drip irrigation pipeline 22 away from the buffer water tank 18 is sealed, and several connection holes 21 are opened on the drip irrigation pipeline 22 for connecting to the drip irrigation body 23.

[0033] In agricultural drip irrigation, different drip irrigation needs arise depending on the growth cycle of crops. Therefore, in this embodiment, a first water control valve 4 is installed on the main pipeline 3, and a second water control valve 6 and a third water control valve 7 are respectively installed at both ends of the bypass pipeline 5. The first water control valve 4 is located on the main pipeline 3 between the two ends of the bypass pipeline 5. When fertilization is not required, the second water control valve 6 and the third water control valve 7 can be closed, and the first water control valve 4 can be opened. When fertilization is required, the first water control valve 4 is closed, and the second water control valve 6 and the third water control valve 7 are opened.

[0034] like Figure 2As shown, a Venturi tube 8 is installed on the bypass pipe 5. In this embodiment, the Venturi tube 8 includes a contraction section 24, a throat 25, and a diffuser section 26 connected sequentially along the water flow direction. The contraction section 24 is connected to the pumping pipe 11, and a throttle valve 12 is also installed on the pumping pipe 11 to prevent fertilizer over-fertilization by adjusting the flow opening of the throttle valve 12. The cross-sections of the contraction section 24 and the diffuser section 26 are both trapezoidal, and the two ends of the throat 25 are connected to the smaller ends of the contraction section 24 and the diffuser section 26, respectively. The contraction section 24 is connected to the bypass pipe 5 through the inlet pipe 27, and the diffuser section 26 is connected to the bypass pipe 5 through the outlet pipe 28. A first flow meter 9 is installed on the inlet pipe 27, and a second flow meter 10 is installed on the outlet pipe 28. The flow openings of the second control valve 6 and the third control valve 7 can be adjusted to meet the drip irrigation needs of crops at different growth stages.

[0035] To further ensure that the water and fertilizer concentration meets the requirements, an acceleration pipe 29 is also installed inside the contraction section 24. One end of the acceleration pipe 29 is connected to the end of the contraction section 24, and the other end of the acceleration pipe 29 has a reduced diameter and extends to the pumping pipe 11.

[0036] In this embodiment, in order to further ensure the uniformity of water and fertilizer flowing into each drip irrigation pipe 22, a liquid level gauge 19 is provided on the outside of the buffer water tank 18. The drip irrigation connection valve 20 can be opened in a timely manner by observing the liquid level of the buffer water tank 18. For example, the drip irrigation connection valve 20 is opened only after the water and fertilizer in the buffer water tank 18 have completely submerged the bottom of the buffer water tank 18.

[0037] like Figure 3 and Figure 4As shown, the drip irrigation body 23 includes a connecting seat 33 and a drip irrigation head 32. The connecting seat 33 is threadedly connected to the drip irrigation head 32. The drip irrigation head 32 has an inner tube 36 inside and several drip irrigation grooves 35 are evenly opened at the bottom of the drip irrigation head 32. The connecting seat 33 has knob handles 30 on both sides of the top and a connecting head 31 at the center of the top for connecting to the connecting hole 21. A drainage tube 34 is provided inside the connecting seat 33. The drainage tube 34 and the inner tube 36 are coaxially arranged, and the outer diameter and length of the drainage tube 34 are adapted to the inner tube 36, so that the drainage tube 34 is inserted into the inner tube 36 without abutting the bottom of the inner tube 36 when the connecting seat 33 and the drip irrigation head 32 are connected, and an annular overflow area is formed between the inner tube 36 and the drainage tube 34. A filter screen 37 is installed within the annular overflow area. The filter screen 37 has an annular structure, with its outer edge engaging with the inner wall of the inner tube 36. The inner diameter of the filter screen 37 is adapted to the drainage pipe 34, minimizing the gap between the outer wall of the drainage pipe 34 and the inner ring of the filter screen 37 after the drainage pipe 34 is inserted into the inner tube 36. As water and fertilizer flow into the inner tube 36 through the drainage pipe 34, the water level in the inner tube 36 gradually rises and overflows from the annular overflow area, eventually flowing out of the drip irrigation trough 35. During this process, the water and fertilizer overflowing from the inner tube 36 are filtered by the filter screen 37, further preventing clogging of the drip irrigation trough 35.

[0038] Continue to refer to Figure 1 To ensure uniform mixing of water and fertilizer, a first feed inlet 16 and a second feed inlet 17 are provided on both sides of the top of the water and fertilizer tank 13 for adding water and fertilizer, respectively. A stirring motor 14 is provided at the center of the top of the water and fertilizer tank 13, and a stirring rod 15 is provided inside the water and fertilizer tank 13. The output end of the stirring motor 14 is connected to the stirring rod 15.

[0039] The various embodiments of the present invention have been described above. These descriptions are exemplary and not exhaustive, nor are they limited to the disclosed embodiments. Many modifications and variations will be apparent to those skilled in the art without departing from the scope and spirit of the described embodiments. The terminology used herein is chosen to best explain the principles, practical applications, or technical improvements to the embodiments in the market, or to enable others skilled in the art to understand the embodiments disclosed herein.

Claims

1. An agricultural drip irrigation device, characterized in that, Includes a main pipeline (3), one end of which is connected to a water storage tank (1) via a water pump (2), and the other end of which is connected to a buffer water tank (18). A bypass pipeline (5) is connected to the main pipeline (3) via a T-connector. The bypass pipeline (5) is connected to a water and fertilizer tank (13) via a water pump (11) for pumping water and fertilizer to the main pipeline (3) and mixing it with the irrigation water in the water storage tank (1) in the buffer water tank (18). The bottom of the buffer tank (18) is connected to several drip irrigation lines (22) through a drip irrigation connection valve (20). The drip irrigation lines (22) are laid in the drip irrigation area of ​​the crops. The end of each drip irrigation line (22) away from the buffer tank (18) is sealed and several connection holes (21) are opened on the drip irrigation line (22) for connecting the drip irrigation body (23).

2. The agricultural drip irrigation equipment according to claim 1, characterized in that, The main pipeline (3) is equipped with a first water control valve (4), and the two ends of the bypass pipeline (5) are respectively equipped with a second water control valve (6) and a third water control valve (7); The first water control valve (4) is located on the main pipeline (3) between the two ends of the bypass pipeline (5).

3. The agricultural drip irrigation equipment according to claim 1, characterized in that, The bypass pipe (5) is provided with a venturi tube (8), which includes a constriction section (24), a throat (25), and a diffuser section (26) connected in sequence along the water flow direction; The contraction section (24) is connected to the pumping pipe (11), and a throttle valve (12) is also provided on the pumping pipe (11); The cross-sections of the contraction section (24) and the diffusion section (26) are both trapezoidal structures, and the two ends of the throat (25) are respectively connected to the small ends of the contraction section (24) and the diffusion section (26); The contraction section (24) is connected to the bypass pipe (5) through the inlet pipe (27), and the diffusion section (26) is connected to the bypass pipe (5) through the outlet pipe (28). A first flow meter (9) is installed on the inlet pipe (27), and a second flow meter (10) is installed on the outlet pipe (28).

4. An agricultural drip irrigation device according to claim 3, characterized in that, The contraction section (24) is also provided with an acceleration tube (29). One end of the acceleration tube (29) is connected to the end of the contraction section (24), and the other end of the acceleration tube (29) has a reduced diameter and extends to the pumping pipe (11).

5. An agricultural drip irrigation device according to claim 1, characterized in that, A level gauge (19) is provided on the outside of the buffer tank (18).

6. An agricultural drip irrigation device according to claim 1, characterized in that, The drip irrigation body (23) includes a connecting seat (33) and a drip irrigation head (32). The connecting seat (33) is threadedly connected to the drip irrigation head (32). The drip irrigation head (32) has an inner tube (36) inside and several drip irrigation grooves (35) are evenly opened at the bottom of the drip irrigation head (32). The connecting seat (33) is provided with knob handles (30) on both sides of the top, and a connector (31) is provided at the center of the top of the connecting seat for connecting to the connecting hole (21). A drainage tube (34) is provided inside the connecting seat (33). The drainage tube (34) and the inner tube (36) are coaxially arranged, and the outer diameter and length of the drainage tube (34) are adapted to the inner tube (36) so that the drainage tube (34) is inserted into the inner tube (36) without abutting against the bottom of the inner tube (36) when the connecting seat (33) and the drip head (32) are connected, and an annular overflow area is formed between the inner tube (36) and the drainage tube (34).

7. An agricultural drip irrigation device according to claim 6, characterized in that, A filter screen (37) is provided in the annular overflow area. The filter screen (37) has an annular structure. The outer edge of the filter screen (37) is engaged with the inner wall of the inner tube (36). The inner diameter of the filter screen (37) is adapted to the drainage tube (34).

8. An agricultural drip irrigation device according to claim 1, characterized in that, The water and fertilizer tank (13) has a first feed inlet (16) and a second feed inlet (17) on both sides of the top, which are used for adding water and fertilizer respectively. A stirring motor (14) is set at the center of the top of the water and fertilizer tank (13), and a stirring rod (15) is set inside the water and fertilizer tank (13). The output end of the stirring motor (14) is connected to the stirring rod (15).

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