A vortex self-cleaning seepage irrigation emitter and a preparation and flushing method thereof

Abstract

The application discloses a vortex self-flushing infiltration irrigation water distributor and a preparation and flushing method, which comprises a porous water infiltration body, the top of the porous water infiltration body is fixedly connected with an upper top cover, a water infiltration cavity is arranged in the porous water infiltration body, the upper top cover is provided with a water inlet, the bottom of the porous water infiltration body is fixedly connected with a bottom cylinder, a conical body is arranged in the water infiltration cavity, an extendable drainage sleeve is arranged in the bottom cylinder, the bottom of the conical body is fixedly connected with the top of the extendable drainage sleeve, and a water outlet is arranged at the bottom of the bottom cylinder; and the application solves the problem that the existing infiltration irrigation water distributor is prone to blockage.

Description

Technical Field

[0001] This invention relates to the field of drip irrigation emitter design, specifically to a vortex self-flushing drip irrigation emitter and its preparation and flushing method. Background Technology

[0002] Water-saving irrigation is the main irrigation method used in modern agriculture, especially in arid areas. Micro-irrigation, as an advanced water-saving irrigation technology, has been widely adopted in the irrigation of crops in arid regions. Through reasonable system design and efficient field management, micro-irrigation can achieve timely and appropriate irrigation of crop roots, effectively reducing surface water evaporation and greatly improving irrigation water use efficiency. The emitter is the most critical component of a micro-irrigation system; its structure, hydraulic performance, and quality directly affect the uniformity and reliability of irrigation. In recent years, with the rapid development of water-saving technologies in modern agriculture, drip irrigation has been found to be the most water-saving irrigation technology among micro-irrigation systems. As the core component of drip irrigation systems, the emitter has become one of the key research areas for drip irrigation technology in various countries.

[0003] In recent years, research on microporous ceramic and microporous concrete irrigation emitters has gradually attracted the attention of some scholars. Studies have found that microporous ceramic and microporous concrete emitters not only possess excellent hydraulic performance but also effectively avoid the defects of plastic emitters. However, current drip irrigation emitters still have many problems, such as high cost, low water uniformity, and susceptibility to clogging. These problems greatly hinder the development of drip irrigation technology. Summary of the Invention

[0004] The purpose of this invention is to overcome the above-mentioned shortcomings and provide a vortex self-flushing seepage irrigation emitter and its preparation and flushing method, thereby solving the problem of easy clogging of existing seepage irrigation emitters.

[0005] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: a vortex self-flushing seepage irrigation device, comprising a porous seepage body, the top of which is fixedly connected to an upper cover, a seepage cavity is provided inside the porous seepage body, an inlet is provided on the upper cover, the bottom of which is fixedly connected to a bottom cylinder, a conical body is arranged inside the seepage cavity, a telescopic drainage sleeve is arranged inside the bottom cylinder, the bottom of the conical body is fixedly connected to the top of the telescopic drainage sleeve, and an outlet is provided at the bottom of the bottom cylinder.

[0006] Preferably, the top of the cone is hemispherical, the bottom of the cone is provided with a curved edge, the bottom of the curved edge is provided with an annular base, and the side of the annular base is provided with a water inlet hole.

[0007] Preferably, the telescopic drainage cylinder includes multiple connecting plates with gaps between them. The top of the connecting plate is fixedly connected to the bottom of the elastic body, the top of the elastic body is fixedly connected to the inner wall of the outer sleeve, the outer wall of the outer sleeve is fixedly connected to the inner wall of the bottom cylinder, the bottom of the connecting plate is fixedly connected to the baffle plate, and the baffle plate cooperates with the bottom of the outer sleeve.

[0008] Preferably, the top cover, bottom cylinder, conical body, and telescopic drainage cylinder are all made of polyethylene. The top of the porous permeable body is sealed to the top cover with hot melt adhesive, the bottom of the porous permeable body is sealed to the top of the bottom cylinder with hot melt adhesive, the bottom of the conical body is sealed to the top of the telescopic drainage cylinder with hot melt adhesive, and the outer wall of the telescopic drainage cylinder is sealed to the inner wall of the bottom cylinder with hot melt adhesive.

[0009] Preferably, the raw materials for preparing the porous permeable body are, by mass parts: 20-40 parts of silt, 30-50 parts of slag, 10-20 parts of silica sol, and 10-20 parts of pore-forming agent.

[0010] In addition, the present invention also discloses a method for preparing the porous seepage body of the above-mentioned vortex self-flushing seepage irrigation emitter, characterized in that it includes the following steps:

[0011] Step 1: Put the mixture of rice husks, peanut shells and sawdust into a crusher and crush it into granules. Then mix the raw materials evenly according to the existing formula ratio.

[0012] Step 2: Add silica sol and mix well. Let the mixture stand in a sealed container for a period of time.

[0013] Step 3: Load the aged mixture into the mold and dry press it into shape under a certain pressure;

[0014] Step 4: Place the green body into a drying oven and dry it for a period of time;

[0015] Step 5: Place the billet into a high-temperature furnace for firing to obtain a porous permeable body.

[0016] Furthermore, it specifically includes the following steps:

[0017] Step 1: Put the mixture of rice husks, peanut shells and sawdust into a crusher and crush it into granules. Then, pass it through a 100-mesh sieve. Mix the three raw materials in the following mass proportions: 35 parts silt, 35 parts slag, and 15 parts pore-forming agent.

[0018] Step 2: Add silica sol solution at 15% of the total weight of the raw material formula, mix and stir evenly, and let the mixture stand in a sealed container for 24 hours;

[0019] Step 3: Load the aged mixture into the mold and dry press it under a pressure of 12MPa;

[0020] Step 4: Place the green body into a drying oven for drying at 90℃ for 60 minutes.

[0021] Step 5: Place the blank in a high-temperature furnace for firing at a heating rate of 5℃ / min, with a test firing temperature of 800℃ and a holding time of 60~90min to obtain a porous permeable body for the water dispenser.

[0022] In addition, the present invention also discloses a flushing method for the above-mentioned vortex self-flushing seepage irrigation emitter, which includes the following steps:

[0023] S1: When the drip irrigation emitter is in normal working irrigation mode, water flows from the inlet into the seepage chamber of the porous seepage body. In irrigation mode, the water pressure in the seepage chamber is insufficient to push the baffle plate down from the bottom of the outer tube. At this time, the bottom of the outer tube is blocked by the baffle plate and becomes closed. Under the action of pressure, the water in the seepage chamber seeps out from the micropores of the porous seepage body and carries out the irrigation process.

[0024] S2: As the number of irrigations increases, impurities in the water source will remain in the seepage cavity, and with the increase in usage time, they will gradually block the micropores of the porous seepage body.

[0025] S3: When the porous seepage body is blocked, causing a significant decrease in flow rate, increase the head pressure of the irrigation system. When the seepage chamber pressure reaches the rated flushing pressure of the emitter, the emitter enters the flushing mode. At this time, the water flow impact force overcomes the elasticity of the elastomer and pushes the baffle plate down from the bottom of the outer tube, exposing the water outlet gap at the bottom of the outer tube. The water flow is finally discharged from the outlet at the bottom of the bottom cylinder.

[0026] S4: As water flows out from the outlet, the flow rate at the inlet increases instantaneously. The water impacts the top of the cone and flows along the outer wall of the cone. Then, due to the curved edge at the bottom of the cone, some of the water is lifted upward by the curved edge, forming a vortex to flush the inner wall of the porous permeable body. The water then carries sediment particles downward and enters the inlet through the gap between the outer side of the annular base and the inner wall of the porous permeable body. After passing through the inner side of the outer sleeve, it flows out from the bottom outlet gap and finally exits from the outlet of the bottom cylinder, achieving the purpose of automatic flushing.

[0027] The beneficial effects of this invention are:

[0028] 1. The vortex self-flushing seepage irrigation emitter prepared by the method provided in this invention has excellent irrigation performance; by changing the mass ratio of the pore-forming agent mixture of rice husk, peanut shell and sawdust, the porosity and permeability coefficient of the emitter can be effectively controlled, and the irrigation uniformity is good; since the main raw materials for preparing the seepage irrigation emitter are riverbed silt and waste slag, the cost of the emitter is effectively reduced.

[0029] 2. Drip irrigation emitters are prone to clogging. Due to the microporous structure of the water flow channel in the emitter material, physical and biological blockages easily occur on the inner wall surface of the emitter, making it difficult to treat such blockages. This invention utilizes the fact that under flushing conditions, the elastic tension cannot withstand the water pressure, causing the baffle to move downwards and exposing the water outlet gap at the bottom of the outer sleeve. The water flow impacts the top of the cone and flows along the outer wall of the cone. Because the bottom of the cone has a curved edge, part of the water flow is lifted upwards by the curved edge, forming a vortex to flush the inner wall of the porous seepage chamber. Then, the water flow carries sediment particles downwards and enters the inlet hole through the gap between the outer side of the annular base and the inner wall of the porous seepage chamber. After passing through the inner wall of the outer sleeve, it flows out from the bottom water outlet gap and finally exits from the outlet of the bottom cylinder, achieving the purpose of automatic flushing and realizing the effect of automatically flushing the blockages attached to the inner wall of the seepage chamber.

[0030] 3. This invention utilizes the reaction of sludge and slag to form a network structure of calcium vanadium stone. During the heating process, a mixture of rice husks, peanut shells, and sawdust first generates pores due to the evaporation of trace amounts of water within the mixture. Secondly, the main components of the mixture, lignin, hemicellulose, and cellulose, undergo dehydrogenation and depolymerization reactions at high temperatures, releasing carbon dioxide and water, thus creating pores. Finally, the mixture of rice husks, peanut shells, and sawdust contains volatile hydrocarbons, which also contribute to pore formation. This results in excellent permeability of the permeable body, eliminating the need for an external pore-forming agent and simplifying the process.

[0031] 4. The seepage chamber of the drip irrigation emitter contains a large vortex, which consumes some water energy. Therefore, the wall thickness of the porous seepage body of the emitter can be appropriately reduced to save material costs. The resulting vortex-cavity self-flushing drip irrigation emitter has a simple structure, is easy to manufacture, has low cost, is easy to mass-produce, has strong anti-clogging ability, and can be used for a long time. Attached Figure Description

[0032] Figure 1 A three-dimensional structural diagram of a vortex self-flushing seepage irrigation emitter;

[0033] Figure 2 for Figure 1 Schematic diagram of the half-section structure;

[0034] Figure 3 A three-dimensional exploded view of a vortex-cavity self-flushing seepage irrigation emitter;

[0035] Figure 4 This is a schematic diagram of a cone-shaped three-dimensional structure;

[0036] Figure 5 A schematic diagram of the structure of the telescopic drainage sleeve and the connection of the bottom cylinder;

[0037] Figure 6 for Figure 5A schematic diagram of the structure in which the middle baffle plate mates with the bottom of the outer sleeve;

[0038] Figure 7 A diagram showing the overall flow velocity distribution in the seepage cavity during flushing operations;

[0039] Figure 8 A diagram showing the longitudinal flow velocity distribution in the seepage cavity during flushing operations;

[0040] Figure 9 This is a map showing the soil moisture content distribution around an irrigation emitter with a 1m water head under irrigation conditions. Detailed Implementation

[0041] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0042] like Figure 1 As shown, a vortex self-flushing seepage irrigation device includes a porous seepage body 1. The top of the porous seepage body 1 is fixedly connected to an upper cover 2. A seepage cavity 3 is opened inside the porous seepage body 1. The upper cover 2 is provided with a water inlet 4. The bottom of the porous seepage body 1 is fixedly connected to a bottom cylinder 5. A conical body 6 is arranged inside the seepage cavity 3. A telescopic drainage sleeve 7 is arranged inside the bottom cylinder 5. The bottom of the conical body 6 is fixedly connected to the top of the telescopic drainage sleeve 7. A water outlet 51 is opened at the bottom of the bottom cylinder 5.

[0043] Preferably, the top of the cone 6 is hemispherical, the bottom of the cone 6 is provided with an arc-shaped raised edge 61, the bottom of the arc-shaped raised edge 61 is provided with an annular base 62, and the side of the annular base 62 is provided with a water inlet hole 63.

[0044] Preferably, the telescopic drainage cylinder 7 includes multiple connecting plates 71 with gaps between them. The top of the connecting plate 71 is fixedly connected to the bottom of the elastic body 72, the top of the elastic body 72 is fixedly connected to the inner wall of the outer sleeve 73, the outer wall of the outer sleeve 73 is fixedly connected to the inner wall of the bottom cylinder 5, and the bottom of the connecting plate 71 is fixedly connected to the baffle 74, which cooperates with the bottom of the outer sleeve 73. In this embodiment, the elastic body 72 can be made of telescopic rubber. Its top is fixedly connected to the inner wall of the outer sleeve 73, and the bottom connecting plate 71 and baffle 74 are tightened so that the baffle 74 presses against the bottom of the outer sleeve 73, forming a sealing effect (see details). Figure 6 (In the irrigation operation); when water flows into the bottom cylinder 5 through the inlet hole 63, only when the water pressure is greater than the pulling force of the elastic body 72 will the baffle 74 move downwards and move away from the bottom of the outer sleeve 73 a certain distance, exposing the water outlet gap at the bottom of the outer sleeve 73 (see details). Figure 6 (The rinsing process in the middle).

[0045] Preferably, the top cover 2, bottom cylinder 5, conical body 6, and telescopic drainage cylinder 7 are all made of polyethylene. The top of the porous permeable body 1 is sealed to the top cover 2 with hot melt adhesive, the bottom of the porous permeable body 1 is sealed to the top of the bottom cylinder 5 with hot melt adhesive, the bottom of the conical body 6 is sealed to the top of the telescopic drainage cylinder 7 with hot melt adhesive, and the outer wall of the telescopic drainage cylinder 7 is sealed to the inner wall of the bottom cylinder 5 with hot melt adhesive.

[0046] Preferably, the raw materials for preparing the porous permeable body 1 are as follows by mass parts: 20-40 parts of silt, 30-50 parts of slag, 10-20 parts of silica sol, and 10-20 parts of pore-forming agent.

[0047] In addition, the present invention also discloses a method for preparing the porous seepage body of the above-mentioned vortex self-flushing seepage irrigation emitter, characterized in that it includes the following steps:

[0048] Step 1: Put the mixture of rice husks, peanut shells and sawdust into a crusher and crush it into granules. Then mix the raw materials evenly according to the existing formula ratio.

[0049] Step 2: Add silica sol and mix well. Let the mixture stand in a sealed container for a period of time.

[0050] Step 3: Load the aged mixture into the mold and dry press it into shape under a certain pressure;

[0051] Step 4: Place the green body into a drying oven and dry it for a period of time;

[0052] Step 5: Place the billet into a high-temperature furnace for firing to obtain porous permeable body 1.

[0053] Furthermore, it specifically includes the following steps:

[0054] Step 1: Put the mixture of rice husks, peanut shells and sawdust into a crusher and crush it into granules. Then, pass it through a 100-mesh sieve. Mix the three raw materials in the following mass proportions: 35 parts silt, 35 parts slag, and 15 parts pore-forming agent.

[0055] Step 2: Add silica sol solution at 15% of the total weight of the raw material formula, mix and stir evenly, and let the mixture stand in a sealed container for 24 hours;

[0056] Step 3: Load the aged mixture into the mold and dry press it under a pressure of 12MPa;

[0057] Step 4: Place the green body into a drying oven for drying at 90℃ for 60 minutes.

[0058] Step 5: Place the blank in a high-temperature furnace for firing at a heating rate of 5℃ / min, with a test firing temperature of 800℃ and a holding time of 60~90min to obtain a porous permeable body for the water dispenser.

[0059] In addition, the present invention also discloses a flushing method for the above-mentioned vortex self-flushing seepage irrigation emitter, which includes the following steps:

[0060] S1: When the drip irrigation emitter is in normal operating mode, water flows from the inlet 4 into the seepage chamber 3 of the porous seepage body 1. (See drip irrigation mode) Figure 6 In the irrigation process), the water pressure in the seepage chamber 3 is insufficient to push the baffle 74 down from the bottom of the outer sleeve 73. At this time, the bottom of the outer sleeve 73 is blocked by the baffle 74 and becomes closed. The water in the seepage chamber 3 seeps out from the micropores of the porous seepage body 1 under pressure and carries out the irrigation process.

[0061] S2: As the number of irrigations increases, impurity particles in the water source will remain in the seepage cavity 3, and as the usage time increases, they will gradually block the micropores of the porous seepage body 1.

[0062] S3: When the porous infiltration body 1 becomes blocked, causing a significant decrease in flow rate, the pressure at the head of the irrigation system is increased. When the pressure in the infiltration chamber 3 reaches the rated flushing pressure of the emitter, the emitter enters the flushing mode (see...). Figure 6 (In the flushing process), the water flow impact force overcomes the elasticity of the elastomer 72 and pushes the baffle 74 down from the bottom of the outer sleeve 73, exposing the water outlet gap at the bottom of the outer sleeve 73, and the water finally flows out from the water outlet 51 at the bottom of the bottom cylinder 5.

[0063] S4: As water flows out from outlet 51, the flow rate at inlet 4 increases instantaneously. The water flows into the top of cone 6 and along the outer wall of cone 6. Then, due to the curved edge 61 at the bottom of cone 6, a portion of the water is lifted by the curved edge and moves upward, forming a vortex to flush the inner wall of porous permeable body 1. The water then carries sediment particles downward and enters inlet 63 through the gap between the outer side of annular base 62 and the inner wall of porous permeable body 1. After passing through the inner side of outer sleeve 73, it flows out from the bottom outlet gap and finally exits from outlet 51 of bottom cylinder 5, achieving the purpose of automatic flushing.

[0064] Example 1: The internal water flow characteristics of an irrigation emitter under flushing conditions were simulated using FLUENT numerical simulation. For example... Figures 7 to 8 As shown (where Figure 7(A) is a three-dimensional distribution diagram, and B is a top-view distribution diagram. When the drip irrigation emitter is in normal operating mode, water flows from the inlet into the seepage chamber of the porous seepage body. During irrigation, the water pressure in the seepage chamber is insufficient to force the baffle plate downwards from the bottom of the outer casing. At this point, the bottom of the outer casing is blocked by the baffle plate, creating a closed state. Under pressure, the water in the seepage chamber seeps out from the micropores of the porous seepage body. As the number of irrigations increases, some fine impurities in the water source will remain in the seepage chamber of the emitter. Furthermore, with prolonged use, algae and microorganisms will grow on the inner wall of the emitter's seepage chamber, further clogging the emitter. When the emitter becomes clogged, causing a significant decrease in flow, the pressure at the head of the irrigation system is increased. When the pressure in the emitter's seepage chamber reaches the rated flushing pressure, the emitter enters the flushing mode. At this moment, the water flow pushes the baffle plate downwards from the bottom of the outer sleeve, exposing the water outlet gap at the bottom of the outer sleeve, and finally discharges from the water outlet at the bottom of the bottom cylinder. As the water flows out of the outlet, the water flow rate at the inlet increases instantaneously. The water flow impacts the top of the cone and flows along the outer wall of the cone. Then, due to the curved edge at the bottom of the cone, part of the water flow is lifted upwards by the curved edge, forming a vortex to flush the inner wall of the porous permeable body. Then, the water flow carries the mud and sand particles downwards, and then enters the inlet hole through the gap between the outer side of the annular base and the inner wall of the porous permeable body. After passing through the inside of the outer sleeve, it flows out from the water outlet gap at the bottom and finally discharges from the water outlet of the bottom cylinder, achieving the purpose of automatic flushing.

[0065] As can be seen from the flow velocity distribution diagram inside the emitter cavity, a stream of water is propelled upwards in a parabolic trajectory by the lifting effect of the raised edge, impacting the porous inner wall of the emitter. This is precisely the part of the emitter prone to clogging. Then, a vortex is formed, carrying sediment particles downwards. The downward-moving water has a higher flow velocity and a stronger ability to carry sediment. It flows into the inlet hole along the gap between the base and the inner wall of the porous inner wall. As can be seen from the flow streamline distribution inside the emitter cavity, the conical structure design enhances the turbulence of the water flow inside the emitter. The intense water flow disturbance and vortex are conducive to cleaning the inner wall of the emitter and meet the anti-clogging requirements.

[0066] Example 2: In this example, the velocity distribution inside the porous infiltration body under irrigation conditions was simulated using HYDRUS numerical simulation, and the velocity inside the emitter was found to be 10 × 10⁻⁶. -3 The flow velocity drops to 4 × 10 m / s after passing through the porous composite material permeable body. -4 It has a speed of m / s and a good energy dissipation effect.

[0067] Example 3: This example uses HYDRUS numerical simulation to analyze the soil moisture distribution within a 1m³ area around the irrigation device. Figure 9As shown, after 24 hours of irrigation, the soil moisture content within 1 m³ around the irrigator showed obvious stratification, with the inner layer having the highest moisture content at 0.43 and the outer layer having the lowest at 0.038. The soil moisture content around the irrigator was symmetrically distributed, indicating that the irrigator had good irrigation uniformity. The maximum moisture content range was within 25 cm around the irrigator. This embodiment can guide crop planting location and ensure maximum irrigation water utilization.

[0068] The above embodiments are merely preferred technical solutions of the present invention and should not be considered as limitations on the present invention. The embodiments and features described in these embodiments can be arbitrarily combined without conflict. The scope of protection of the present invention should be limited to the technical solutions described in the claims, including equivalent substitutions of the technical features described in the claims. That is, equivalent substitutions and improvements within this scope are also within the scope of protection of the present invention.

Claims

1. A vortex-type self-flushing seepage irrigation device, comprising a porous seepage body (1), the top of which is fixedly connected to an upper cover (2), a seepage cavity (3) is provided inside the porous seepage body (1), and an inlet (4) is provided on the upper cover (2), characterized in that: The bottom of the porous permeable body (1) is fixedly connected to the bottom cylinder (5). A cone-shaped body (6) is arranged in the permeable cavity (3). A telescopic drainage sleeve (7) is arranged in the bottom cylinder (5). The bottom of the cone-shaped body (6) is fixedly connected to the top of the telescopic drainage sleeve (7). An outlet (51) is opened at the bottom of the bottom cylinder (5). The top of the cone (6) is hemispherical, and the bottom of the cone (6) is provided with a curved edge (61) with an arc surface. The bottom of the curved edge (61) is provided with an annular base (62), and the side of the annular base (62) is provided with a water inlet hole (63). The telescopic drainage sleeve (7) includes multiple connecting plates (71) with gaps between them. The top of the connecting plate (71) is fixedly connected to the bottom of the elastic body (72). The top of the elastic body (72) is fixedly connected to the inner wall of the outer sleeve (73). The outer wall of the outer sleeve (73) is fixedly connected to the inner wall of the bottom cylinder (5). The bottom of the connecting plate (71) is fixedly connected to the baffle (74). The baffle (74) cooperates with the bottom of the outer sleeve (73). The raw materials for preparing the porous permeable body (1) are as follows by mass parts: 20-40 parts of silt, 30-50 parts of slag, 10-20 parts of silica sol, and 10-20 parts of pore-forming agent. The pore-forming agent is a mixture of rice husk, peanut shell and sawdust.

2. The vortex self-flushing seepage irrigation emitter according to claim 1, characterized in that: The top cover (2), bottom cylinder (5), cone (6) and telescopic drainage sleeve (7) are all made of polyethylene. The top of the porous permeable body (1) is sealed to the top cover (2) by hot melt adhesive. The bottom of the porous permeable body (1) is sealed to the top of the bottom cylinder (5) by hot melt adhesive. The bottom of the cone (6) is sealed to the top of the telescopic drainage sleeve (7) by hot melt adhesive. The outer wall of the telescopic drainage sleeve (7) is sealed to the inner wall of the bottom cylinder (5) by hot melt adhesive.

3. A method for preparing the porous seepage body of the vortex self-flushing seepage irrigation emitter as described in claim 1, characterized in that: It includes the following steps: Step 1: Put the mixture of rice husks, peanut shells and sawdust into a crusher and crush it into granules. Then mix the raw materials evenly according to the existing formula ratio. Step 2: Add silica sol and mix well. Let the mixture stand in a sealed container for a period of time. Step 3: Load the aged mixture into the mold and dry press it into shape under a certain pressure; Step 4: Place the green body into a drying oven and dry it for a period of time; Step 5: Place the billet into a high-temperature furnace for firing to obtain a porous permeable body (1).

4. The method for preparing the porous seepage body of the vortex self-flushing seepage irrigation emitter according to claim 3, characterized in that: It specifically includes the following steps: Step 1: Put the mixture of rice husks, peanut shells and sawdust into a crusher and crush it into granules. Then, pass it through a 100-mesh sieve. Mix the three raw materials in the following mass proportions: 35 parts silt, 35 parts slag, and 15 parts pore-forming agent. Step 2: Add silica sol solution at 15% of the total weight of the raw material formula, mix and stir evenly, and let the mixture stand in a sealed container for 24 hours; Step 3: Load the aged mixture into the mold and dry press it under a pressure of 12MPa; Step 4: Place the green body into a drying oven for drying at 90℃ for 60 minutes. Step 5: Place the blank in a high-temperature furnace for firing at a heating rate of 5℃ / min, with a test firing temperature of 800℃ and a holding time of 60~90min to obtain a porous permeable body for the water dispenser.

5. A flushing method for a vortex self-flushing seepage irrigation emitter according to any one of claims 1 or 2, characterized in that: It includes the following steps: S1: When the seepage irrigation device is in normal irrigation mode, the water flows from the inlet (4) into the seepage chamber (3) of the porous seepage body (1). In irrigation mode, the water pressure in the seepage chamber (3) is insufficient to push the baffle (74) down from the bottom of the outer tube (73). At this time, the bottom of the outer tube (73) is blocked by the baffle (74) and becomes closed. The water in the seepage chamber (3) seeps out from the micropores of the porous seepage body (1) under pressure and carries out the irrigation process. S2: As the number of irrigations increases, impurity particles in the water source will remain in the seepage cavity (3), and as the usage time increases, they will gradually block the micropores of the porous seepage body (1). S3: When the porous infiltration body (1) is blocked, causing a significant decrease in flow rate, the pressure at the head of the irrigation system is increased. When the pressure in the infiltration chamber (3) reaches the rated pressure for flushing the emitter, the emitter enters the flushing mode. At this time, the water flow impact force overcomes the elasticity of the elastomer (72) and pushes the baffle (74) down from the bottom of the outer tube (73), exposing the water outlet gap at the bottom of the outer tube (73). The water flow is finally discharged from the outlet (51) at the bottom of the bottom cylinder (5). S4: As the water flows out from the outlet (51), the flow rate of the inlet (4) increases instantaneously. The water will impact the top of the cone (6) and flow along the outer wall of the cone (6). Then, due to the curved edge (61) at the bottom of the cone (6), a part of the water is lifted by the curved edge and moves upward, forming a vortex to flush the inner wall of the porous permeable body (1). Then, the water carries the mud and sand particles downward and enters the inlet hole (63) through the gap between the outer side of the ring base (62) and the inner wall of the porous permeable body (1). After passing through the inner side of the outer sleeve (73), it flows out from the bottom outlet gap and finally exits from the outlet (51) of the bottom cylinder (5), achieving the purpose of automatic flushing.

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