A blocking controlled irrigation and fertilization device and irrigation system

Abstract

The present invention relates to the technical field of agricultural and forestry machinery, and in particular to a control-blocking type irrigation and fertilization device and an irrigation system. The control-blocking type irrigation and fertilization device comprises a pipeline main body and a magnetizing mechanism, wherein the magnetizing mechanism is arranged on the pipeline main body, and the pipeline main body comprises a water supply pipeline, a fertilizer supply pipeline and an outlet pipeline; the first inlet and the second inlet of the outlet pipeline are respectively connected to the first outlet of the water supply pipeline and the outlet of the fertilizer supply pipeline. The control-blocking type irrigation and fertilization device provided in an embodiment of the present invention magnetizes the water flow in the pipeline main body through the magnetizing mechanism, which can increase the solubility of fertilizer particles in water. Due to the increase in solubility, the fertilizer particles will not accumulate and scale on the inner wall of the pipeline, and the magnetizing effect of the magnetizing mechanism can also make the crystal structure of the fertilizer become fluffy, which is not conducive to the accumulation and scaling of fertilizer particles on the inner wall of the pipeline.

Description

Technical Field

[0001] The invention relates to the technical field of agricultural and forestry machinery, and in particular to a controlled-blocking type irrigation and fertilization device and an irrigation system. Background Art

[0002] In recent years, my country's water resource crisis has become increasingly serious and has become one of the main bottlenecks restricting the sustainable development of my country's social economy. However, as a major water user (accounting for 62.32% of the total annual water consumption in 2017), the effective utilization coefficient of farmland irrigation water is only 0.536, which is far lower than the 0.70-0.80 in developed countries. Agricultural water conservation has great potential for improvement. At the same time, my country is also a major fertilizer user. According to data from the National Bureau of Statistics, my country's agricultural fertilizer application in 2017 was 58.5941 million tons, accounting for about 1 / 3 of the world's total agricultural fertilizer application. At present, my country's relatively extensive agricultural management model has caused waste of water and fertilizer resources and increased agricultural production costs. It has also caused a series of environmental problems such as non-point source pollution, hardening of cultivated land, and soil acidification. Therefore, it is imperative to improve water and fertilizer management technology. Water-fertilizer integration technology is an important way to improve the comprehensive productivity of agriculture. The typical water-fertilizer integration technology model currently adopted by developed countries in the world is to use micro-irrigation systems to irrigate and fertilize at the same time, which can achieve fine management of water and nutrients and effectively improve the utilization efficiency of water and fertilizer.

[0003] One of the main obstacles restricting the application and promotion of this technology is the clogging of the emitter. As a key component to ensure the efficient operation of the drip irrigation system, the emitter uses the complex and narrow internal flow channels or micropores to dissipate the energy of the pressurized water flow, so that the water flow drips into the soil in a stable and uniform droplet shape. Due to the need for energy dissipation, the flow channel structure is complex and the size is narrow (usually 0.5-1.2mm). In the water-fertilizer integrated system, since the fertilizer contains a large amount of chemical elements, it is easy for chemical ions to recombine and precipitate as the fertilizer is injected into the drip irrigation system, which can easily cause the emitter to be blocked. This not only directly determines the service life and benefits of the water-fertilizer integrated system, but also causes a significant reduction in the uniformity of irrigation and fertilization, affecting the normal growth and development of crops. It has become a shortcoming that restricts the development and application of water-fertilizer integrated technology. Therefore, it is of great practical value to effectively control the emitter blockage problem caused by the synchronization of irrigation and fertilization in the water-fertilizer integrated system. At present, the main way to solve the problem of irrigation system blockage caused by fertilizer precipitation is to inject acidic chemical reagents to lower the pH value of irrigation water. Although this can significantly prevent the production and accumulation of chemical precipitation, it has many disadvantages. For example, adding acid may cause an excessively low pH environment, causing corrosion damage to the pipe components in the drip irrigation system, acid damage to the soil and crops, and unsafe conditions for operators. Summary of the invention

[0004] The embodiment of the present invention provides a blockage-controlled fertilization device and an irrigation system, which are used to solve or partially solve the problem that there are many drawbacks in the existing method of solving the blockage of the irrigation system caused by fertilizer precipitation by adding acid.

[0005] The embodiment of the present invention provides a plugging control type irrigation and fertilization device, comprising a pipeline body and a magnetizing mechanism, wherein the magnetizing mechanism is arranged on the pipeline body, and the pipeline body comprises:

[0006] A water supply pipeline is provided with an inlet for connecting to a water source, a first outlet, and a second outlet;

[0007] A fertilizer supply pipeline is provided with a first inlet, a second inlet and an outlet for communicating with a fertilizer source, wherein the second inlet of the fertilizer supply pipeline is communicated with the second outlet of the water supply pipeline; and

[0008] The outlet pipeline is provided with a first inlet, a second inlet and an outlet for connecting to the irrigation pipeline. The first inlet and the second inlet of the outlet pipeline are connected to the first outlet of the water supply pipeline and the outlet of the fertilizer supply pipeline respectively.

[0009] Wherein, the magnetization mechanism is arranged on the water supply pipeline and / or the outlet pipeline.

[0010] Wherein, the magnetization mechanism is arranged on the water supply pipeline and close to the inlet of the water supply pipeline; and the magnetization mechanism is arranged on the outlet pipeline and close to the outlet of the outlet pipeline.

[0011] Wherein, the magnetization mechanism is arranged on the outer wall of the pipeline body; and / or,

[0012] The magnetization mechanism is detachably arranged on the pipeline body.

[0013] Wherein, the pipeline body includes a magnetizing section provided with the magnetizing mechanism, the magnetizing mechanism is a cylindrical arrangement extending along the extension direction of the magnetizing section, and the magnetizing mechanism is sleeved on the outer side of the magnetizing section.

[0014] Wherein, the magnetization mechanism comprises:

[0015] A housing, a cover is arranged on the outside of the magnetizing section, and the housing and the outer tube wall of the magnetizing section enclose a mounting cavity; and,

[0016] A magnet pair is arranged in the installation cavity, and the magnet pair includes two magnets facing each other in a direction perpendicular to the extension direction of the magnetization segment.

[0017] Wherein, the housing is a magnetic shield housing; and / or,

[0018] The magnetic shield housing comprises two half shells opposite to each other in a first direction, one end of the two half shells in a second direction is rotatably connected along an axis in the extension direction of the magnetized segment, and the other end in the second direction is connected by a buckling structure, wherein the first direction, the second direction and the extension direction of the magnetized segment are perpendicular to each other; and / or,

[0019] The magnetization mechanism further includes a fixing tube, the fixing tube is located in the installation cavity and sleeved on the outside of the magnetization section, and the magnet pair is located on the outside of the fixing tube; and / or,

[0020] The positive pole of one of the two magnets and the negative pole of the other are close to each other.

[0021] Wherein, the second inlet of the outlet pipeline is located between the first inlet and the outlet of the outlet pipeline, a first control valve is provided on the outlet pipeline, and the first control valve is located between the first inlet and the second inlet of the outlet pipeline; and / or,

[0022] The first outlet of the water supply pipeline is located between the second outlet and the inlet of the water supply pipeline. A second control valve is provided on the water supply pipeline, and the second control valve is located between the first outlet and the second outlet of the water supply pipeline.

[0023] Wherein, the water supply pipeline is provided with a plurality of second outlets, the outlet pipeline is provided with a plurality of second inlets, and the fertilizer supply pipeline comprises:

[0024] A venturi fertilizer absorber, wherein the inlet and outlet of the venturi fertilizer absorber are respectively the second inlet and outlet of the fertilizer supply pipeline, and the venturi fertilizer absorber is provided with a plurality of venturi fertilizer absorbers, and the inlet and outlet of the plurality of venturi fertilizer absorbers are respectively connected with the plurality of second outlets of the water supply pipeline and the plurality of second inlets of the outlet pipeline in a one-to-one correspondence; and

[0025] A fertilizer suction pipeline, the inlet of the fertilizer suction pipeline is the first inlet of the fertilizer supply pipeline, and a plurality of fertilizer suction pipelines are provided, and the outlets of the plurality of fertilizer suction pipelines are connected to the throats of the plurality of Venturi fertilizer suction devices in a one-to-one correspondence.

[0026] Wherein, the inlet of each of the Venturi fertilizer absorbers is connected to the second outlet corresponding to the water supply pipeline through a first branch pipe, and a check valve is arranged on the first branch pipe.

[0027] An embodiment of the present invention further provides an irrigation system, comprising the above-mentioned plugging-controlled fertigation device and an irrigation pipeline, wherein the outlet of the outlet pipeline of the plugging-controlled fertigation device is connected to the inlet of the irrigation pipeline.

[0028] The control-blocking type irrigation and fertilization device provided by the embodiment of the present invention magnetizes the water flow in the pipeline body through a magnetizing mechanism to form magnetized water, which can increase the solubility of fertilizer particles in water. Due to the increase in solubility, the fertilizer particles will not accumulate and scale on the inner wall of the pipeline, and the magnetizing effect of the magnetizing mechanism can also make the crystal structure of the fertilizer become fluffy, which is not conducive to the accumulation and scaling of fertilizer particles on the inner wall of the pipeline. At the same time, by setting up a magnetizing mechanism, the fertilizer utilization efficiency can also be improved, and the effect of improving soil compaction and salinization is obvious, so as to achieve high-efficiency irrigation and fertilization of farmland. If no fertilizer is needed, the magnetized water can still promote the division, growth and development of plant cells, thereby promoting the growth of plants, and has a positive effect on the growth of crops. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0030] Figure 1 It is a structural schematic diagram of a plugging control type irrigation and fertilization device in an embodiment of the present invention;

[0031] Figure 2 for Figure 1 A cross-sectional view of the magnetizing mechanism;

[0032] Figure 3 for Figure 1 Another cross-sectional view of the magnetizing mechanism;

[0033] Figure 4 for Figure 1 Schematic diagram of the structure of the fertilizer suction device in Zhongwen;

[0034] Explanation of the reference numerals: a controlled-blocking fertilization device 100, a magnetizing mechanism 1, a shell 11, a half shell 111, a snap-fit ​​structure 112, a mounting cavity 12, a magnet 13, a fixing pipe 14, a water supply pipeline 2, a second control valve 21, a fertilizer supply pipeline 3, a venturi fertilizer suction device 31, a throat 311, a fertilizer suction pipeline 32, a first branch pipe 33, a check valve 34, a second branch pipe 35, an outlet pipeline 4, a first control valve 41, a horizontal pipe 42, and a vertical pipe 43. DETAILED DESCRIPTION

[0035] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0036] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0037] The embodiment of the present invention provides a blocking type irrigation and fertilization device, which can be used in irrigation systems, such as Figure 1 As shown, the blocking-controlled fertigation device 100 comprises a pipeline body and a magnetization mechanism 1 , wherein the pipeline body comprises a water supply pipeline 2 , a fertilizer supply pipeline 3 and an outlet pipeline 4 .

[0038] The water supply pipeline 2 is provided with an inlet for connecting to a water source, a first outlet and a second outlet, and water can flow into the water supply pipeline 2 from the inlet of the water supply pipeline 2. The shape of the water supply pipeline 2 can be set according to actual needs, for example, Figure 1 As shown, in this embodiment, the water supply pipe 2 extends along the third direction, one end of the water supply pipe 2 is provided with an inlet, and the other end is sealed, and the side wall of the water supply pipe 2 is provided with a first outlet and a second outlet, and the first outlet of the water supply pipe 2 is located between the inlet and the second outlet of the water supply pipe 2.

[0039] The fertilizer supply pipeline 3 is provided with a first inlet, a second inlet and an outlet for connecting to a fertilizer source. The second inlet of the fertilizer supply pipeline 3 is connected to the second outlet of the water supply pipeline 2. The fertilizer and the water flow of the water supply pipeline 2 can flow into the fertilizer supply pipeline 3 from the first inlet and the second inlet of the fertilizer supply pipeline 3 respectively and mix to form a fertilizer liquid.

[0040] The outlet pipe 4 is provided with a first inlet, a second inlet and an outlet for connecting to the irrigation pipe. The first inlet and the second inlet of the outlet pipe 4 are connected to the first outlet of the water supply pipe 2 and the outlet of the fertilizer supply pipe 3 respectively. The water flow of the water supply pipe 2 and the fertilizer liquid in the fertilizer supply pipe 3 can flow into the outlet pipe 4 from the first inlet and the second inlet of the outlet pipe 4 respectively, and then flow into the irrigation pipe of the irrigation system through the outlet pipe 4. The shape of the outlet pipe 4 can be set according to actual needs, for example, Figure 1 As shown, in this embodiment, the outlet pipeline 4 includes a transverse pipe 42 extending along the third direction and a longitudinal pipe 43 extending along the first direction, one end of the transverse pipe 42 is connected to one end of the longitudinal pipe 43, a first inlet of the outlet pipeline 4 is provided at one end of the longitudinal pipe 43 away from the transverse pipe 42, an outlet of the outlet pipeline 4 is provided at one end of the transverse pipe 42 away from the longitudinal pipe 43, and a second inlet of the outlet pipeline 4 is provided on the side wall of the transverse pipe 42.

[0041] like Figure 1 As shown, in this embodiment, the first outlet of the water supply pipeline 2 is located between the second outlet and the inlet of the water supply pipeline 2, and a second control valve 21 is provided on the water supply pipeline 2, and the second control valve 21 is located between the first outlet and the second outlet of the water supply pipeline 2. In this way, when the second control valve 21 is closed, the water flow of the water supply pipeline 2 will not flow into the fertilizer supply pipeline 3 to mix with the fertilizer to form a fertilizer solution, and the water flow of the water supply pipeline 2 can only flow into the outlet pipeline 4 from the first inlet of the outlet pipeline 4. At this time, the control-blocking type fertigation device 100 only supplies water to the irrigation pipeline for irrigation.

[0042] Similarly, if Figure 1 As shown, in this embodiment, the second inlet of the outlet pipeline 4 is located between the first inlet and the outlet of the outlet pipeline 4, and the outlet pipeline 4 is provided with a first control valve 41, and the first control valve 41 is located between the first inlet and the second inlet of the outlet pipeline 4, so that when the first control valve 41 is closed, the water flow of the water supply pipeline 2 will not flow into the irrigation pipeline through the outlet pipeline 4, and the water flow of the water supply pipeline 2 can only flow into the fertilizer supply pipeline 3 and mix with the fertilizer to form a fertilizer liquid, and then flow into the irrigation pipeline through the outlet pipeline 4. At this time, the control-blocking type fertigation device 100 only supplies fertilizer liquid to the irrigation pipeline for irrigation. Usually, the control-blocking type fertigation device 100 also includes a controller for controlling the valve on the pipeline body through the controller.

[0043] The magnetizing mechanism 1 is arranged on the pipeline body, and the magnetizing mechanism 1 will form magnetic flux lines. When water passes through the magnetizing mechanism 1, the water is cut by the magnetic flux lines perpendicular to the pipeline, and the water is magnetized to form magnetized water. This can increase the solubility of small fertilizer particles in water. Due to the increase in solubility, the fertilizer particles will not accumulate and scale on the inner wall of the pipeline. In addition, the magnetizing effect of the magnetizing mechanism 1 can also make the crystal structure of the fertilizer fluffy, which is not conducive to the accumulation and scaling of fertilizer particles on the inner wall of the pipeline, thereby realizing an energy-free or low-energy environmentally friendly irrigation and fertilization device with low cost, easy operation and wide application range. Among them, the magnetizing mechanism 1 is arranged on the pipeline body, and one or more magnetizing mechanisms 1 can be arranged on at least one of the water supply pipeline 2, the fertilizer supply pipeline 3 and the outlet pipeline 4. For example, Figure 1As shown, in this embodiment, a magnetizing mechanism 1 is provided on the water supply pipeline 2 and the outlet pipeline 4, and a magnetizing mechanism 1 is provided on the water supply pipeline 2 and near the inlet of the water supply pipeline 2 (i.e., a magnetizing mechanism 1 is provided on the water supply pipeline 2 and located between the inlet and the first outlet of the water supply pipeline 2, and the magnetizing mechanism 1 on the water supply pipeline 2 is referred to as the first magnetizing mechanism below), and a magnetizing mechanism 1 is provided on the outlet pipeline 4 and near the outlet of the outlet pipeline 4 (i.e., a magnetizing mechanism 1 is provided on the outlet pipeline 4 and located between the second inlet and the outlet of the outlet pipeline 4, and the magnetizing mechanism 1 on the outlet pipeline 4 is referred to as the second magnetizing mechanism below). The water flow in the water supply pipeline 2 will be magnetized by the first magnetizing mechanism to form magnetized water, and then enter the fertilizer supply pipeline 3 to mix with the fertilizer, so as to improve the solubility of the small fertilizer particles in the water. When the fertilizer enters the magnetized water, it converges with the magnetized water flow, and due to the increase in solubility, the fertilizer particles will not accumulate and scale on the inner wall of the pipeline. However, the magnetism of water will weaken over time, so a second magnetization mechanism is set on the outlet pipe 4 to magnetize the water flow for the second time, which can enhance the magnetism of water and ensure that the rear part of the pipe will not be blocked by fertilizer due to weakened magnetism.

[0044] The magnetizing mechanism 1 is arranged on the pipeline body, and may be arranged on the inner wall of the pipeline body; or on the outer wall of the pipeline body; or on both the inner wall and the outer wall of the pipeline body. Figures 1 to 3 As shown, in this embodiment, the pipeline body includes a magnetizing section (not shown in the figure) provided with a magnetizing mechanism 1, and the magnetizing mechanism 1 is a cylindrical arrangement extending along the extension direction of the magnetizing section (such as Figure 1 As shown, in this embodiment, the extension direction of the magnetization section is the third direction), and the magnetization mechanism 1 is sleeved on the outside of the magnetization section. The magnetization mechanism 1 is arranged on the outer wall of the pipeline body, which not only facilitates the installation of the magnetization mechanism 1 on the pipeline body, but also does not increase the flow resistance of the pipeline body. Furthermore, since the magnetization mechanism 1 is usually detachably arranged on the pipeline body, two annular protrusions can be convexly provided on the outer wall of the magnetization section corresponding to the magnetization mechanism 1, and the two limiting protrusions are located on both sides of the magnetization mechanism 1 in the extension direction of the magnetization section, so as to limit the magnetization mechanism 1 in the extension direction of the magnetization section.

[0045] The water flow and liquid fertilizer can be magnetized by the magnetizing mechanism 1. The specific configuration of the magnetizing mechanism 1 can be set according to actual needs. Specifically, Figures 1 to 3As shown, in this embodiment, the magnetization mechanism 1 includes a shell 11 and a magnet pair, the shell 11 is arranged on the outside of the magnetization section, and the shell 11 and the outer tube wall of the magnetization section enclose a mounting cavity 12; the magnet pair is arranged in the mounting cavity 12, and the magnet pair includes two magnets 13 opposite to each other in a direction perpendicular to the extension direction of the magnetization section (the magnet 13 can be a permanent magnet, etc., and in this embodiment, the positive pole of one of the two magnets 13 and the negative pole of the other are close to each other). In this way, the structure of the magnetization mechanism 1 is relatively simple, and a uniform magnetic field can be generated.

[0046] Further, if Figures 1 to 3 As shown, in this embodiment, the housing 11 is a magnetic shield housing, and setting the housing 11 as a magnetic shield housing can avoid magnetic leakage. The housing 11 can be made of a magnetic shield material or a magnetic shield layer is provided on the inner side of the housing 11.

[0047] As described above, the magnetization mechanism 1 can be detachably arranged on the pipeline body, specifically, Figure 2 As shown, in this embodiment, the magnetic shield housing 11 includes two half shells 111 opposite to each other in the first direction, one end of the two half shells 111 in the second direction is connected to be rotatable along the axis in the extension direction of the magnetization segment, and the other end in the second direction is connected by a buckle structure 112, so that the magnetization mechanism 1 is convenient to disassemble and assemble. The first direction, the second direction and the extension direction of the magnetization segment are perpendicular to each other.

[0048] like Figures 1 to 3 As shown, in this embodiment, the magnetization mechanism 1 further includes a fixing tube 14, which is located in the installation cavity 12 and sleeved on the outside of the magnetization section. The magnet pair is located on the outside of the fixing tube 14. By providing the fixing tube 14, it is beneficial to firmly fix the magnet pair in the installation cavity 12. In addition, in this embodiment, since the housing 11 includes two half shells 111, the fixing tube 14 includes two half tubes (not shown in the figure), and the two half tubes are respectively connected to the two half shells 111.

[0049] Furthermore, a filling layer (not shown in the figure) is filled in the installation cavity 12, so as to maintain the stability of the magnetizing mechanism 1. Moreover, when the filling layer is a magnetic conductive glue, the magnetizing effect of the magnetizing mechanism 1 can be improved.

[0050] The shape of the magnetizing mechanism 1 is related to the shape of the magnetizing segment, which is usually a circular tube segment. Figure 2 and Figure 3As shown, in this embodiment, the fixed tube 14 is also a round tube, and the shell 11 is a square shell, the magnet 13 is a square block that matches the shape of the shell 11, and the two magnets 13 are respectively arranged on the two side walls of the shell 11 in the first direction, and the two ends of each magnet 13 in the second direction are respectively abutted against the two side walls of the shell 11 in the second direction, and the two ends of each magnet 13 in the third direction are respectively abutted against the two side walls of the shell 11 in the third direction, and the fixed tube 14 is clamped between the two magnets 13 in the first direction, and the fixed tube 14 is clamped between the two side walls of the shell 11 in the second direction in the second direction. Similarly, the size of the magnetization mechanism 1 is selected according to the size of the magnetization segment. For example, in this embodiment, the size of the magnetization mechanism 1 in the third direction is 200 mm, the size of the magnetization mechanism 1 in the first direction is 150 mm, and the size of the magnetization mechanism 1 in the second direction is 120 mm, the thickness of the shell 11 is 5 mm, and the thickness of the magnet 13 is 15 mm.

[0051] The control-blocking type irrigation and fertilization device 100 provided in the embodiment of the present invention magnetizes the water flow in the pipeline body through the magnetization mechanism 1 to form magnetized water, which can increase the solubility of fertilizer particles in water. Due to the increase in solubility, the fertilizer particles will not accumulate and scale on the inner wall of the pipeline, and the magnetization effect of the magnetization mechanism 1 can also make the crystal structure of the fertilizer fluffy, which is not conducive to the accumulation and scaling of fertilizer particles on the inner wall of the pipeline. At the same time, by setting the magnetization mechanism 1, the fertilizer utilization efficiency can also be improved, and the effect of improving soil compaction and salinization is obvious, so as to achieve high-efficiency irrigation and fertilization of farmland. If no fertilizer is needed, the magnetized water can still promote the division, growth and development of plant cells, thereby promoting the growth of plants, and has a positive effect on the growth of crops.

[0052] The controlled plugging type fertigation device 100 can form liquid fertilizer through the fertilizer supply pipeline 3, specifically, Figure 1 and Figure 4As shown, in the present embodiment, the water supply pipeline 2 is provided with a plurality of second outlets, the outlet pipeline 4 is provided with a plurality of second inlets, the fertilizer supply pipeline 3 includes a venturi fertilizer absorber 31 and a fertilizer absorption pipeline 32, the inlet and outlet of the venturi fertilizer absorber 31 are respectively the second inlet and outlet of the fertilizer supply pipeline 3, and a plurality of venturi fertilizer absorbers 31 are provided, and the inlets and outlets of the plurality of venturi fertilizer absorbers 31 are respectively connected with the plurality of second outlets of the water supply pipeline 2 and the plurality of second inlets of the outlet pipeline 4 in a one-to-one correspondence; the inlet of the fertilizer absorption pipeline 32 is the first inlet of the fertilizer supply pipeline 3, and a plurality of fertilizer absorption pipelines 32 are provided, and the outlets of the plurality of fertilizer absorption pipelines 32 are connected with the throats 311 of the plurality of venturi fertilizer absorbers 31 in a one-to-one correspondence. The water flow in the water supply pipeline 2 enters the multiple venturi fertilizer absorbers 31, and the high-concentration fertilizer solution is sucked into the fertilizer absorption pipeline 32 by using the vacuum area formed by the throat 311 of the venturi fertilizer absorber 31, and enters the venturi fertilizer absorber 31 to mix with the water flow to form liquid fertilizer. The shape of the fertilizer supply pipeline 3 can be set according to actual needs, for example, Figure 1 As shown, in this embodiment, the venturi fertilizer absorber 31 extends along the first direction, and a plurality of venturi fertilizer absorbers 31 are arranged in parallel in the third direction.

[0053] Further, if Figure 1 As shown, in this embodiment, the inlet of each venturi fertilizer absorber 31 is connected to the second outlet corresponding to the water supply pipeline 2 through a first branch pipe 33, and a check valve 34 is provided on the first branch pipe 33. By providing the check valve 34, the liquid fertilizer in the venturi fertilizer absorber 31 can be prevented from flowing back into the water supply pipeline 2.

[0054] like Figure 1 As shown, in this embodiment, the outlet of each venturi fertilizer absorber 31 is connected to the second inlet corresponding to the outlet pipeline 4 through a second branch pipe 35, and the second branch pipe 35 includes a gradually expanding section, which is gradually expanded in the direction from the outlet of the venturi fertilizer absorber 31 to the second inlet of the outlet pipeline 4. By setting the gradually expanding section, the liquid fertilizer in the venturi fertilizer absorber 31 is facilitated to flow evenly into the outlet pipeline 4.

[0055] The embodiment of the present invention further provides an irrigation system, comprising the above-mentioned plugging-controlled fertigation device 100 and an irrigation pipeline, wherein the outlet of the outlet pipeline 4 of the plugging-controlled fertigation device 100 is connected to the inlet of the irrigation pipeline.

[0056] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A plugging control type irrigation and fertilization device, characterized in that: The invention comprises a pipeline main body and a magnetizing mechanism, wherein the magnetizing mechanism is arranged on the pipeline main body, and the pipeline main body comprises: A water supply pipeline is provided with an inlet for connecting to a water source, a first outlet, and a second outlet; A fertilizer supply pipeline is provided with a first inlet, a second inlet and an outlet for communicating with a fertilizer source, wherein the second inlet of the fertilizer supply pipeline is communicated with the second outlet of the water supply pipeline; and An outlet pipeline is provided with a first inlet, a second inlet and an outlet for connecting to an irrigation pipeline, wherein the first inlet and the second inlet of the outlet pipeline are connected to the first outlet of the water supply pipeline and the outlet of the fertilizer supply pipeline respectively; The second inlet of the outlet pipeline is located between the first inlet and the outlet of the outlet pipeline, and a first control valve is provided on the outlet pipeline, and the first control valve is located between the first inlet and the second inlet of the outlet pipeline; and / or, The first outlet of the water supply pipeline is located between the second outlet and the inlet of the water supply pipeline, and a second control valve is provided on the water supply pipeline, and the second control valve is located between the first outlet and the second outlet of the water supply pipeline; The water supply pipeline is provided with a plurality of second outlets, the outlet pipeline is provided with a plurality of second inlets, and the fertilizer supply pipeline comprises: A venturi fertilizer absorber, wherein the inlet and outlet of the venturi fertilizer absorber are respectively the second inlet and outlet of the fertilizer supply pipeline, and the venturi fertilizer absorber is provided with a plurality of venturi fertilizer absorbers, and the inlet and outlet of the plurality of venturi fertilizer absorbers are respectively connected with the plurality of second outlets of the water supply pipeline and the plurality of second inlets of the outlet pipeline in a one-to-one correspondence; and A fertilizer suction pipeline, the inlet of the fertilizer suction pipeline is the first inlet of the fertilizer supply pipeline, and a plurality of fertilizer suction pipelines are provided, and the outlets of the plurality of fertilizer suction pipelines are connected to the throats of the plurality of Venturi fertilizer suction devices in a one-to-one correspondence.

2. The plugging control type fertilization device according to claim 1, characterized in that: The magnetization mechanism is arranged on the water supply pipeline and / or the outlet pipeline.

3. The plugging control type fertilization device according to claim 1, characterized in that: The magnetization mechanism is arranged on the outer wall of the pipeline body; and / or, The magnetization mechanism is detachably arranged on the pipeline body.

4. The plugging control type fertilization device according to claim 1, characterized in that: The pipeline body includes a magnetizing section provided with the magnetizing mechanism, the magnetizing mechanism is a cylindrical arrangement extending along the extension direction of the magnetizing section, and the magnetizing mechanism is sleeved on the outer side of the magnetizing section.

5. The plugging control type fertilization device according to claim 4, characterized in that: The magnetization mechanism comprises: A housing, a cover is arranged on the outside of the magnetizing section, and the housing and the outer tube wall of the magnetizing section enclose a mounting cavity; and, A magnet pair is arranged in the installation cavity, and the magnet pair includes two magnets facing each other in a direction perpendicular to the extension direction of the magnetization segment.

6. The plugging control type fertilization device according to claim 5, characterized in that: The housing is a magnetic shield housing; and / or, The magnetic shield housing comprises two half shells opposite to each other in a first direction, one end of the two half shells in a second direction is rotatably connected along an axis in the extension direction of the magnetized segment, and the other end in the second direction is connected by a buckling structure, wherein the first direction, the second direction and the extension direction of the magnetized segment are perpendicular to each other; and / or, The magnetization mechanism further includes a fixing tube, the fixing tube is located in the installation cavity and sleeved on the outside of the magnetization section, and the magnet pair is located on the outside of the fixing tube; and / or, The positive pole of one of the two magnets and the negative pole of the other are close to each other.

7. The plugging control type fertilization device according to claim 1, characterized in that: The inlet of each of the venturi fertilizer absorbers is connected to the second outlet corresponding to the water supply pipeline through a first branch pipe, and a check valve is arranged on the first branch pipe.

8. An irrigation system, characterized in that: It comprises the blocking-controlled fertigation device and an irrigation pipeline as described in any one of claims 1 to 7, wherein the outlet of the outlet pipeline of the blocking-controlled fertigation device is connected to the inlet of the irrigation pipeline.

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