Low-pressure quantitative automatic control water-saving irrigation and fertilization device

Abstract

The utility model belongs to the technical field of irrigation, and particularly relates to a low-pressure quantitative automatic-control water-saving irrigation and fertilization device which comprises a water inlet pipe connected with a water source supply end and a fertilizer inlet pipe connected with a fertilizer liquid supply end, and the input end of the water inlet pipe and the input end of the fertilizer inlet pipe are provided with a water pump and a fertilization pump respectively. The water inlet pipe comprises an irrigation water path and a fertilization pipeline, the output end of the irrigation water path and the output end of the water and fertilizer pipeline are connected with the drip irrigation belt through a three-way pipe, an irrigation electromagnetic valve is arranged on the irrigation water path, a fertilization electromagnetic valve is arranged on the water and fertilizer pipeline, and the output end of the fertilizer inlet pipe is communicated with the fertilization pipeline. A mixer is also arranged between the fertilization pipeline and the three-way pipe, and fertilizer liquid and water form a mixed material by virtue of the mixer. According to the device, irrigation water is independently irrigated or mixed with fertilizer liquid for irrigation, the irrigation amount of the fertilizer liquid is accurately and quantitatively controlled, and the irrigation amount is accurately controlled according to different crops and different growth periods.

Description

Technical Field

[0001] The utility model belongs to the technical field of irrigation and fertilization, and particularly relates to a low-pressure quantitative automatic control water-saving irrigation and fertilization device. Background Art

[0002] Low-pressure irrigation is a commonly used irrigation method in current agriculture. The pressure of low-pressure irrigation is generally below 100 kPa. By using a water pump, water flows to the pipeline with a certain pressure, and then the irrigation water is diverted to various parts of the farmland. The low-pressure irrigation equipment has low cost and high water utilization efficiency, and can save irrigation water.

[0003] When the current low-pressure irrigation device encounters integrated water and fertilizer irrigation, generally, the irrigation water and the fertilizer solution are mixed in advance, and then the amount of fertilizer is controlled by the irrigation amount of water and fertilizer. However, the amount of fertilizer and water required by crops in different weather conditions and different growth periods are different, resulting in changes in the ratio of fertilizer amount to water amount. The current conventional low-pressure irrigation device cannot control the amount of fertilizer alone. Summary of the Utility Model

[0004] In order to solve the problems existing in the above-mentioned prior art, the utility model provides a low-pressure quantitative automatic control water-saving irrigation and fertilization device. By using a valve group to separately control the irrigation water path and the fertilization pipeline, it realizes separate irrigation of irrigation water or mixed irrigation with fertilizer solution, accurately and quantitatively controls the amount of water and fertilizer, and precisely regulates for different crops and different growth periods.

[0005] The specific technical solution adopted by the utility model is as follows:

[0006] A low-pressure quantitative automatic control water-saving irrigation and fertilization device includes a water inlet pipe connected to a water source supply end and a fertilizer inlet pipe connected to a fertilizer solution supply end. A water pump and a fertilizer application pump are respectively arranged at the input ends of the water inlet pipe and the fertilizer inlet pipe. The water inlet pipe includes an irrigation water path and a fertilization pipeline. The output ends of the irrigation water path and the fertilization pipeline are respectively connected to a drip irrigation belt by means of a tee. An irrigation solenoid valve is arranged on the irrigation water path, and a fertilization solenoid valve is arranged on the fertilization pipeline. The output end of the fertilizer inlet pipe is communicated with the fertilization pipeline, and a mixer is also arranged between the fertilization pipeline and the tee. Fertilizer solution and water form a mixed material by means of the mixer.

[0007] The output end of the fertilization pipeline is arranged near the top of the mixer, and the connection end of the mixer and the drip irrigation belt is arranged near the bottom of the mixer.

[0008] The output end of the fertilization pipeline is tangent to the inner wall of the barrel cavity of the mixer. A plurality of groups of turbulence-convex strips are arranged in a ring array centered on the axis of the barrel cavity in the barrel cavity of the mixer. The turbulence-convex strips are arranged obliquely, and the horizontal cross-section of the turbulence-convex strips is trapezoidal. The mixed liquid is guided to the center of the barrel cavity of the mixer by means of the inclined surface of the turbulence-convex strips.

[0009] The included angle between the spoiler rib and the horizontal plane is 55 - 70 °C.

[0010] The output end of the fertilization pipeline is communicated with the barrel cavity of the mixer. On both sides of the inner wall of the barrel cavity of the mixer, a plurality of groups of downwardly inclined guide plates are arranged at intervals along the vertical direction, and the guide plates on both sides of the barrel cavity are arranged alternately.

[0011] The output end of the fertilizer inlet pipe is vertically arranged with respect to the fertilization pipeline, and the fertilizer liquid in the fertilizer inlet pipe rushes vertically towards the side wall of the fertilization pipeline and forms a mixture with the water in the fertilization pipeline.

[0012] The irrigation and fertilization device further includes an automatic control system. The automatic control system includes an electronic flowmeter and a controller. The controller is respectively connected to the electronic flowmeter, the irrigation solenoid valve, the fertilization solenoid valve, the water pump and the fertilizer pump. The irrigation water circuit and the fertilization pipeline are closed and controlled by means of the controller.

[0013] The beneficial effects of the present utility model are:

[0014] In the present utility model, the water inlet pipe is divided into an irrigation water circuit and a fertilization pipeline, and the irrigation solenoid valve and the fertilization solenoid valve are used to separately control the two pipelines, so as to realize the quantitative irrigation of the fertilizer liquid.

[0015] When only irrigation water is needed, open the irrigation solenoid valve, close the fertilization solenoid valve, and start the water pump. The irrigation water flows into the drip irrigation belt along the irrigation water pipeline to irrigate the crops with water;

[0016] When irrigation and fertilization are needed, close the irrigation solenoid valve, open the fertilization solenoid valve, start the water pump and the fertilizer pump. The irrigation water enters the fertilization pipeline by means of the water pump, and the fertilizer liquid enters the fertilization pipeline by means of the fertilizer pump. The irrigation water and the fertilizer liquid jointly enter the mixer for mixing, and then the mixed liquid flows into the drip irrigation belt to irrigate the crops with water and fertilizer; when it is necessary to adjust the water and fertilizer ratio, the fertilizer liquid input amount can be adjusted by controlling the fertilization solenoid valve, realizing the separate control of the fertilizer liquid dosage and the precise control of the fertilizer amount for different crops and different growth periods. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a schematic structural diagram of the present utility model;

[0018] Figure 2 is a schematic structural diagram of the mixer in Specific Embodiment 1;

[0019] Figure 3 is a schematic top view structural diagram of the mixer in Specific Embodiment 1;

[0020] Figure 4 is a schematic structural diagram of the mixer in Specific Embodiment 2;

[0021] Figure 5 It is a schematic top view structure diagram of the mixer in Specific Embodiment 2;

[0022] In the drawings, 1 is the water source supply end, 2 is the water inlet pipe, 3 is the fertilizer solution supply end, 4 is the fertilizer inlet pipe, 5 is the water pump, 6 is the fertilizer application pump, 7 is the irrigation waterway, 8 is the fertilizer application pipeline, 9 is the three-way pipe, 10 is the drip irrigation tape, 11 is the irrigation solenoid valve, 12 is the fertilizer application solenoid valve, 13 is the mixer, 14 is the flow disturbing rib, 15 is the flow guiding plate, 16 is the electronic flowmeter, and 17 is the controller. Specific Embodiments

[0023] The present invention will be further described below in conjunction with the drawings and specific embodiments:

[0024] Specific Embodiment 1, as Figures 1-3 shown, a low-pressure quantitative automatic control water-saving irrigation and fertilization device is provided in the present invention, including a water inlet pipe 2 connected to the water source supply end 1 and a fertilizer solution pipe 4 connected to the fertilizer solution supply end 3. A water pump 5 and a fertilizer application pump 6 are respectively arranged at the input ends of the water inlet pipe 2 and the fertilizer solution pipe 4. The water inlet pipe 2 includes an irrigation waterway 7 and a fertilizer application pipeline 8. The output ends of the irrigation waterway 7 and the fertilizer application pipeline 8 are respectively connected to the drip irrigation tape 10 through a three-way pipe 9. An irrigation solenoid valve 11 is arranged on the irrigation waterway 7, and a fertilizer application solenoid valve 12 is arranged on the fertilizer application pipeline 8. The output end of the fertilizer inlet pipe 4 is communicated with the fertilizer application pipeline 8, and a mixer 13 is also arranged between the fertilizer application pipeline 8 and the three-way pipe 9. The fertilizer solution and water form a mixture through the mixer 13.

[0025] In the current low-pressure irrigation device, when it comes to integrated water and fertilizer irrigation, generally, the irrigation water and the fertilizer solution are mixed in advance, and then the amount of the fertilizer solution is controlled by the irrigation amount of the water and fertilizer. However, the required fertilizer amount and water amount for crops are different under different weather conditions and different growth cycles, resulting in changes in the ratio of the fertilizer amount to the water amount. And the current low-pressure irrigation device cannot control the amount of the fertilizer solution alone.

[0026] Therefore, in the present invention, the water inlet pipe 2 is divided into an irrigation waterway 7 and a fertilizer application pipeline 8, and the two pipelines are separately controlled by the irrigation solenoid valve 11 and the fertilizer application solenoid valve 12, so as to realize the quantitative irrigation of the fertilizer solution.

[0027] When only irrigation water is needed, the irrigation solenoid valve 11 is opened, the fertilizer application solenoid valve 12 is closed, and the water pump 5 is started. The irrigation water flows into the drip irrigation tape 10 along the irrigation water pipeline to irrigate the crops with water;

[0028] When it is necessary to irrigate with water and fertilizer, close the irrigation solenoid valve 11, open the fertilizer application solenoid valve 12, start the water pump 5 and the fertilizer pump 6. The irrigation water enters the fertilizer application pipeline 8 with the help of the water pump 5, and the fertilizer solution enters the fertilizer application pipeline 8 with the help of the fertilizer pump 6. The irrigation water and the fertilizer solution enter the mixer 13 together for mixing, and then the mixed solution flows into the drip irrigation tape 10 to irrigate the crops with water and fertilizer. When it is necessary to adjust the proportion of water and fertilizer, the fertilizer solution input amount can be adjusted by controlling the fertilizer application solenoid valve 12, realizing the independent control of the fertilizer solution amount and accurately controlling the fertilization amount for different crops and different growth periods.

[0029] The output end of the fertilizer application pipeline 8 is arranged close to the top of the mixer 13, and the connection end of the mixer 13 and the drip irrigation tape 10 is arranged close to the bottom of the mixer 13. The mixed solution flows from the top of the mixer 13 to its bottom, increasing the disturbance of the mixed solution during the flowing process. At the same time, under the action of gravity, the mixed solution splashes when it hits the bottom of the mixer 13, which is beneficial to the mixing between the fertilizer solution and the irrigation water in the mixed solution.

[0030] The output end of the fertilizer application pipeline 8 is tangent to the inner wall of the barrel cavity of the mixer 13. A plurality of groups of turbulence ribs 14 are arranged in a ring array centered on the axis of the barrel cavity in the barrel cavity of the mixer 13. The turbulence ribs 14 are arranged obliquely. The horizontal cross-section of the turbulence ribs 14 is trapezoidal. The mixed solution is guided to the center of the barrel cavity of the mixer 13 by the inclined surface of the turbulence ribs 14. When the mixed solution enters the barrel cavity of the mixer 13, because the output end of the fertilizer application pipeline 8 is tangent to the inner wall of the barrel cavity of the mixer 13 and the mixed solution has a certain initial velocity, the mixed solution will tend to move spirally downward along the inner wall of the mixer 13 under the action of centrifugal force. In the specific embodiment 1, by adding the turbulence ribs 14, the turbulence ribs 14 will hinder the movement of the mixed solution along the inner wall of the mixer 13, and under the guiding action of the inclined surface of the turbulence ribs 14, the mixed solution will move towards the axis of the mixer 13, forming a disturbance to the mixed solution, which is beneficial to the mixing between the fertilizer solution and the irrigation water in the mixed solution and avoids the uneven fertilizer content in the water and fertilizer solutions irrigated in different areas.

[0031] The included angle between the turbulence ribs 14 and the horizontal plane is 55 - 70 °C. Since the mixed solution flows downward in a spiral shape, the turbulence ribs 14 are also arranged obliquely, making the flow direction of the mixed solution perpendicular to the direction of the turbulence ribs 14, thereby increasing the disturbance effect of the turbulence ribs 14 on the mixed solution.

[0032] The output end of the fertilizer inlet pipe 4 is vertically arranged with the fertilizer application pipeline 8. The fertilizer solution in the fertilizer inlet pipe 4 vertically surges towards the side wall of the fertilizer application pipeline 8 and forms a mixture with the water in the fertilizer application pipeline 8. Under the action of the fertilizer pump 6, the fertilizer solution has a certain initial velocity. The fertilizer solution vertically surges towards the fertilizer application pipeline 8 and generates splashing, from the agglomerated fertilizer solution splashing into scattered fertilizer solution, so as to better blend into the irrigation water to form a primary mixture, and then jointly enter the mixer 13 for secondary mixing, which is beneficial to the mixing effect between the irrigation water and the fertilizer solution.

[0033] The irrigation and fertilization device further includes an automatic control system. The automatic control system includes an electronic flowmeter 16 and a controller 17. The controller 17 is respectively connected to the electronic flowmeter 16, the irrigation solenoid valve 11, the fertilizer application solenoid valve 12, the water pump 5 and the fertilizer pump 6. The irrigation water pipeline 7 and the fertilizer application pipeline 8 are closed and controlled by means of the controller 17. The irrigation solenoid valve 11 and the fertilizer application solenoid valve 12 in the present utility model are electromagnetic control valves. The closing degree of the irrigation solenoid valve 11 and the fertilizer application solenoid valve 12 can be controlled through the controller 17, so as to accurately and quantitatively control the irrigation amount of the fertilizer solution and the irrigation water. For different crops and different growth stages, the automatic control system realizes precise and quantitative irrigation and fertilization by inputting appropriate irrigation and fertilization amounts.

[0034] Specific embodiment 2, as Figures 4-5 shown, the difference between specific embodiment 2 and specific embodiment 1 is only that the structure of the mixer 13 and the connection position between the fertilizer application pipeline 8 and the mixer 13 are different. The output end of the fertilizer application pipeline 8 is communicated with the barrel cavity of the mixer 13. On both sides of the inner wall of the barrel cavity of the mixer 13, a plurality of groups of downwardly inclined guide plates 15 are respectively arranged at intervals along the vertical direction, and the guide plates 15 on both sides of the barrel cavity are arranged alternately.

[0035] When the direction of the fertilizer application pipeline 8 is perpendicular to the tangential direction of the mixer 13, the mixed liquid will directly hit the inner wall of the mixer 13 and flow into the bottom of the mixer 13, making it difficult to generate disturbance and resulting in a poor mixing effect between the fertilizer solution and the irrigation water. Therefore, in specific embodiment 2, a plurality of groups of guide plates 15 are provided. The guide plates 15 conduct the mixed liquid multiple times, thereby increasing the mixing times of the fertilizer solution and the irrigation water, and further improving the mixing effect between the fertilizer solution and the irrigation water.

Claims

1. A low-pressure quantitative automatic control water-saving irrigation and fertilization device, comprising a water inlet pipe (2) connected to a water source supply end (1) and a fertilizer inlet pipe (4) connected to a fertilizer liquid supply end (3), wherein the input end of the water inlet pipe (2) and the input end of the fertilizer inlet pipe (4) are respectively provided with a water pump (5) and a fertilizer pump (6), characterized in that: The water inlet pipe (2) comprises an irrigation waterway (7) and a fertilization pipeline (8); the output end of the irrigation waterway (7) and the output end of the fertilization pipeline (8) are respectively connected to a drip irrigation belt (10) by means of a three-way pipe (9); an irrigation solenoid valve (11) is provided on the irrigation waterway (7); a fertilization solenoid valve (12) is provided on the fertilization pipeline (8); the output end of the fertilizer inlet pipe (4) is connected to the fertilization pipeline (8); a mixer (13) is further provided between the fertilization pipeline (8) and the three-way pipe (9); fertilizer liquid and water are mixed by means of the mixer (13) to form a mixed liquid, which flows to the drip irrigation belt.

2. A low-pressure quantitative automatic control water-saving irrigation and fertilization device according to claim 1, characterized in that: The output end of the fertilization pipeline (8) is arranged near the top of the mixer (13), and the connection end between the mixer (13) and the drip irrigation belt (10) is arranged near the bottom of the mixer (13).

3. A low-pressure quantitative automatic control water-saving irrigation and fertilization device according to claim 1, characterized in that: The output end of the fertilizer application pipeline (8) is arranged tangentially to the inner wall of the barrel cavity of the mixer (13); a plurality of groups of spoiler ribs (14) are arranged in a ring-shaped array in the barrel cavity of the mixer (13) with the barrel cavity axis as the center; the spoiler ribs (14) are arranged in an inclined shape; the horizontal cross-section of the spoiler ribs (14) is trapezoidal; and the mixed liquid is guided to the center of the barrel cavity of the mixer (13) by means of the inclined surface of the spoiler ribs (14).

4. A low-pressure quantitative automatic control water-saving irrigation and fertilization device according to claim 3, characterized in that: The angle between the spoiler convex strip (14) and the horizontal plane is 55-70°.

5. A low-pressure quantitative automatic control water-saving irrigation and fertilization device according to claim 1, characterized in that: The output end of the fertilization pipeline (8) is connected to the barrel cavity of the mixer (13), and a plurality of groups of downwardly inclined guide plates (15) are arranged at intervals along the vertical direction on both sides of the inner wall of the barrel cavity of the mixer (13), and the guide plates (15) on both sides of the barrel cavity are arranged in an alternating manner.

6. A low-pressure quantitative automatic control water-saving irrigation and fertilization device according to claim 1, characterized in that: The output end of the fertilizer inlet pipe (4) is in communication with the fertilizer pipeline (8), and the fertilizer liquid in the fertilizer pipeline flows vertically toward the side wall of the fertilizer pipeline (8) and mixes with the water in the fertilizer pipeline (8).

7. The low-pressure quantitative automatic control water-saving irrigation and fertilization device according to claim 1 is characterized in that: The irrigation and fertilization device further comprises an automatic control system, which comprises an electronic flow meter (16) and a controller (17). The controller (17) is respectively connected to the electronic flow meter (16), the irrigation solenoid valve (11), the fertilization solenoid valve (12), the water pump (5) and the fertilization pump (6). The irrigation waterway (7) and the fertilization pipeline (8) are closed and controlled by means of the controller (17).

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