Self-flushing irrigation emitter and method

Abstract

The invention discloses a self-flushing irrigation emitter and method, the irrigation emitter comprises an irrigation emitter body and a rotation control device, an energy dissipation flow channel is arranged in the irrigation emitter body, and the rotation control device is connected with the irrigation emitter body. When pressure water flow enters the flow channel unit through the water inlet groove, the water flow in the flow channel unit is divided into two strands by the water retaining piece and then enters the next flow channel unit, vortexes are generated in the flow channel unit, water flow energy is consumed, the hydraulic performance is improved, and the water flow velocity is reduced. External wind enables the outer fan to rotate, so that the inner fan is driven to rotate, and airflow is generated in the water retaining piece. As the water blocking piece is made of a breathable and waterproof material, airflow can penetrate through the water blocking piece to enable the flow channel to block the particles to generate turbulent fluctuation, the flow channel is flushed to enable the particles to flow out along with water flow, and the probability that the particles are retained in the flow channel is reduced.

Description

Technical Field

[0001] The present invention belongs to the technical field of sprinklers, and in particular relates to a self-flushing sprinkler and a method thereof. Background Art

[0002] Irrigators use a pressure system to evenly and accurately deliver water and fertilizers and nutrients needed for crop growth to the soil surface or soil layer at the roots of plants and crops through a water distribution pipe system according to the water requirements of crops, so that the soil at the roots of crops is always kept in the best water, fertilizer and air state. With the increase in the number of irrigations, impurity particles in the water source will be retained in the energy dissipation flow channel, causing blockage. Clearing the blockage requires a lot of human resources, so an irrigator that can self-flushing and clearing the blockage is needed.

[0003] The patent document with the announcement number CN105706854A discloses an anti-clogging sprinkler based on the cross-sectional double circulation phenomenon of a bend, and an anti-clogging maze flow channel based on the cross-sectional double circulation phenomenon of a bend with a water inlet and a water outlet; the anti-clogging maze flow channel based on the cross-sectional double circulation phenomenon of a bend includes a number of identical flow channel units, and each flow channel unit is composed of four interconnected straight transition sections, wide bend sections, circular arc tapering sections, and thin bend sections. This patent uses the cross-sectional double circulation phenomenon formed by two consecutive opposite 90-degree turns to increase turbulence and form a high-speed area, forming a cross-sectional double circulation in the circular arc transition area, forming a double spiral forward water flow with the mainstream direction of the flow channel, flushing the flow channel wall, and making the sprinkler less prone to clogging during long-term use. However, this patent achieves anti-clogging through the flow channel structure, but lacks a structure for large impurities to block it.

[0004] The patent document with the announcement number CN117502188A discloses an externally mounted pressurized variable flow channel self-flushing sprinkler and an application method, including a sprinkler, the sprinkler includes a module box, an upper cover plate is provided on the top of the module box, an auxiliary water retaining member that can be moved downward under pressure is provided in the module box, a pressurizing device that cooperates with the auxiliary water retaining member is provided on the upper side of the upper cover plate, a labyrinth flow channel plate is provided at the bottom of the module box, the auxiliary water retaining member cooperates with the labyrinth flow channel of the labyrinth flow channel plate when moving downward, a lower cover plate is provided at the bottom of the labyrinth flow channel plate, a water inlet is provided at one end of the labyrinth flow channel plate, and a water outlet is provided at the other end. The patent flushes and removes blockages in the flow channel by rotating a pressurized column, but the operation of rotating the pressurized column needs to be performed manually.

[0005] The patent document with announcement number CN221863963U discloses a flushable gear-type pressure-compensating sprinkler, including a sprinkler cover, a flow channel top cover, a flow channel inner core, a pressure compensation block, a base, a matching flushing plug and an eight-hole adjustable dripper; the flow channel inner teeth and the flow channel outer teeth form a set of gear-type maze flow channels. With the matching dripper, the single-port water outlet mode, flushing mode, and eight-hole water outlet mode can be switched. This new model uses a gear-type flow channel to simultaneously generate counter-energy dissipation and vortex energy dissipation, with significant energy dissipation effects. A pressure compensation block is provided to ensure stable outflow; and the gear inner core can be used to adjust the flow rate, and the water output can be quickly adjusted according to demand. This patent requires manual flushing with a flushing plug after blockage occurs, thereby restoring its irrigation function. It is suitable for scenarios where management is in place and blockage of the sprinkler can be discovered in a timely manner. Summary of the invention

[0006] In order to solve the above technical problems, the present invention provides a self-flushing sprinkler and method.

[0007] The present invention is achieved through the following technical solutions.

[0008] The invention provides a self-flushing sprinkler, comprising a sprinkler body and a rotation control device, wherein an energy dissipation flow channel is arranged in the sprinkler body, and the rotation control device is connected to the sprinkler body.

[0009] Preferably, the energy dissipation channel comprises a plurality of channel units connected in series, the channel units are connected via connecting channels, a water retaining member is arranged in the channel unit, and the height of the channel unit is the same as that of the water retaining member.

[0010] Preferably, the flow channel unit is in a circular ring shape, the connecting channel is arranged in a trumpet shape, and the water inlet end of the connecting channel is a small end.

[0011] Preferably, the water retaining member is in a hollow cylindrical shape, a slot is arranged at the bottom of the water retaining member, a groove is arranged in the slot, and the groove is annular and arranged on the inner wall of the slot.

[0012] Preferably, the water retaining member is made of a material comprising a permeable membrane nanoporous ceramic or a permeable membrane graphene.

[0013] Preferably, the rotation control device includes an outer fan, an inner fan, a connecting column A and a connecting column B, the outer fan is arranged on the connecting column A, the inner fan is arranged on the connecting column B, one end of the connecting column A penetrates one side of the emitter body and is connected to the connecting column B, and the connecting column B is arranged in the energy dissipation flow channel.

[0014] Preferably, a slide bar is provided on the connecting column A, a slide groove A is provided on the connecting column B, a slide groove B is provided on the slide groove A, the connecting column A is inserted into the connecting column B through the slide groove A for sliding connection, and the slide bar is inserted into the slide groove B for sliding connection.

[0015] Preferably, a rotation anti-slip ring is provided on a side of the connecting column B away from the connecting column A.

[0016] Preferably, a cover plate is provided on the top of the emitter body, a through hole is provided on the cover plate, the rotation control device passes through the cover plate through the through hole, a water inlet groove is provided on one side of the emitter body, a water outlet groove is provided on the other side of the emitter body, the water outlet end of the water inlet groove is connected to the water inlet end of the energy dissipation channel, the water inlet end of the water outlet groove is connected to the water outlet end of the energy dissipation channel, and a grid is provided in the water inlet groove.

[0017] A method for using a self-flushing sprinkler comprises the following steps:

[0018] S1: Install the sprinkler body, install the inner fan on the connecting column B, and then insert the connecting column B into the water retaining part for connection.

[0019] S2: Set the grid in the water inlet trough, then install the cover plate on the sprinkler body, install the outer fan on the connecting column A, make the connecting column A pass through the cover plate and connect with the connecting column B, and complete the installation.

[0020] S3: When the wind blows, the wind drives the outer fan to rotate, and drives the inner fan to rotate through the connecting columns A and B, thereby generating airflow in the water retaining member. The airflow passes through the water retaining member and enters the energy dissipation channel, causing turbulence in the internal blocking particles, so that the blocking particles flow out of the energy dissipation channel with the water flow, reducing the probability of particles being retained in the channel.

[0021] The beneficial effects of the present invention are:

[0022] When the pressurized water flows into the flow channel unit through the water inlet trough of the present invention, the water flow in the flow channel unit is divided into two streams by the water retaining member, and then enters the next flow channel unit, generating a vortex in the flow channel unit, consuming water flow energy, improving hydraulic performance, and reducing water flow velocity. The water flows through the energy dissipation flow channel to generate a vortex. As the number of irrigation times increases, the impurity particles in the water source will be retained in the energy dissipation flow channel, causing blockage. The external wind causes the outer fan to rotate, thereby driving the inner fan to rotate, generating airflow in the water retaining member. Since the water retaining member is a breathable and impermeable material, the airflow can pass through the water retaining member to cause turbulence in the flow channel blocking particles, flushing the flow channel so that the particles flow out with the water flow, reducing the probability of particles being retained in the flow channel. Compared with the existing sprinklers, the self-flushing sprinkler of the present invention relies on wind power to drive the rotation control device to generate airflow in the flow channel, and the airflow is converted into water kinetic energy, causing the particles to generate turbulence and flow out of the energy dissipation flow channel with the water flow, increasing the anti-blocking ability of the sprinkler. The present invention uses wind energy to clear blockages, which can reduce human maintenance costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the structure of the present invention;

[0024] Figure 2 is an exploded view of the present invention;

[0025] Figure 3 It is a structural schematic diagram of the energy dissipation flow channel of the present invention;

[0026] Figure 4 It is a structural schematic diagram of the energy dissipation flow channel of the present invention;

[0027] Figure 5 It is a schematic structural diagram of the flow channel unit of the present invention;

[0028] Figure 6 is a schematic structural diagram of the rotation control device of the present invention;

[0029] Figure 7 It is a schematic structural diagram of the connecting column A of the present invention;

[0030] Figure 8 It is a structural schematic diagram of the connecting column B of the present invention;

[0031] Fig. 9 is a velocity vector distribution diagram of the energy dissipation flow channel of the present invention;

[0032] Fig.10 is a velocity vector distribution diagram of the energy dissipation flow channel of the present invention;

[0033] Fig.11 It is a distribution diagram of particle movement trajectories in the energy dissipation flow channel of the present invention;

[0034] Fig.12 is a pressure-flow relationship curve diagram of the energy dissipation flow channel of the present invention;

[0035] In the figure: 1-irrigator body, 2-energy dissipation flow channel, 3-rotation control device, 4-water inlet groove, 5-water outlet groove, 6-flow channel unit, 61-connecting channel, 7-water retaining member, 71-slot, 8-outer fan, 9-inner fan, 10-through hole, 11-connecting column A, 12-connecting column B, 13-rotation anti-slip ring, 14-groove, 15-cover plate, 16-grid member, 101-slide bar, 102-slide groove A, 103-slide groove B. DETAILED DESCRIPTION

[0036] The technical solution of the present invention is further described below, but the scope of protection claimed is not limited to the description.

[0037] Example:

[0038] like Figures 1 to 12 As shown, a self-flushing emitter comprises an emitter body 1 and a rotation control device 3 , wherein an energy dissipation channel 2 is arranged in the emitter body 1 , and the rotation control device 3 is connected to the emitter body 1 .

[0039] The energy dissipation channel 2 includes a plurality of channel units 6 connected in series, and the channel units 6 are connected by connecting channels 61. A water retaining member 7 is arranged in the channel unit 6. The height of the channel unit 6 is the same as that of the water retaining member 7, so that the cover plate 15 can fit the top of the channel unit 6 and the water retaining member 7 at the same time after installation, thereby preventing water from entering the water retaining member 7.

[0040] The flow channel unit 6 is in a circular shape, the outer radius of the flow channel unit 6 is 1.43 mm, and the inner radius is 0.50 mm. The connecting channel 61 is arranged in a trumpet shape, and the water inlet end of the connecting channel 61 is the small end.

[0041] The water retaining member 7 is in a hollow cylindrical shape. A slot 71 is arranged at the bottom of the water retaining member 7 . A groove 14 is arranged in the slot 71 . The groove 14 is annular and arranged on the inner wall of the slot 71 .

[0042] The material of the water retaining member 7 includes permeable membrane nanoporous ceramics or permeable membrane graphene. In this embodiment, permeable membrane nanoporous ceramics are preferred. The water retaining member 7 is an air-permeable and water-impermeable material, and the air flow can pass through the water retaining member 7 into the flow channel unit 6.

[0043] The rotation control device 3 can be provided in several pieces according to the length of the emitter body 1. The rotation control device 3 includes an outer fan 8, an inner fan 9, a connecting column A11 and a connecting column B12. The outer fan 8 is provided on the connecting column A11, and the inner fan 9 is provided on the connecting column B12. One end of the connecting column A11 penetrates through one side of the emitter body 1 and is connected to the connecting column B12. The connecting column B12 is provided in the water retaining member 7 of the energy dissipation channel 2. The outer fan 8 is provided outside the emitter body 1. Four outer fans 8 distributed in a cross shape can be provided on each connecting column A11, and four inner fans 9 distributed in a cross shape can be provided on each connecting column B12.

[0044] The connecting column A11 is provided with a slide bar 101, the connecting column B12 is provided with a slide groove A102, the slide groove A102 is provided with a slide groove B103, the connecting column A11 is inserted into the connecting column B12 through the slide groove A102 for sliding connection, and the slide bar 101 is inserted into the slide groove B103 for sliding connection. The setting of the slide bar 101 and the slide groove B103 can prevent the connecting column A11 from rotating relative to the connecting column B12.

[0045] A rotation anti-skid ring 13 is provided on the side of the connecting column B12 away from the connecting column A11, and the rotation anti-skid ring 13 is placed in the groove 14. The arrangement of the rotation anti-skid ring 13 and the groove 14 prevents the connecting column B12 from shaking when rotating in the slot 71.

[0046] A cover plate 15 is arranged on the top of the emitter body 1, and a through hole 10 is arranged on the cover plate 15. The connecting column A11 of the rotation control device 3 passes through the cover plate 15 through the through hole 10. A water inlet groove 4 is arranged on one side of the emitter body 1, and a water outlet groove 5 is arranged on the other side of the emitter body 1. The water outlet end of the water inlet groove 4 is connected to the water inlet end of the energy dissipation channel 2, and the water inlet end of the water outlet groove 5 is connected to the water outlet end of the energy dissipation channel 2. A grid piece 16 is arranged in the water inlet groove 4 to prevent large-volume debris from entering the energy dissipation channel 2.

[0047] A method for using a self-flushing sprinkler comprises the following steps:

[0048] S1: Install the emitter body 1. The installation position of the emitter body 1 is set according to the planting conditions. Install the inner fan 9 on the connecting column B12, and then insert the connecting column B12 into the water retaining member 7 for connection.

[0049] S2: Set the grid 16 in the water inlet trough 4, then install the cover plate 15 on the emitter body 1, install the outer fan 8 on the connecting column A11, and make the connecting column A11 pass through the cover plate 15 and connect with the connecting column B12 to complete the installation.

[0050] S3: When the wind blows, the wind drives the outer fan 8 to rotate, and drives the inner fan 9 to rotate through the connecting columns A11 and B12, thereby generating airflow in the water retaining member 7. The airflow passes through the water retaining member 7 and enters the energy dissipation channel 2, causing turbulence in the internal blocking particles, so that the blocked particles flow out of the energy dissipation channel 2 with the water flow, reducing the probability of particles being retained in the channel.

[0051] The CFD simulation method was used to numerically simulate the flow velocity vector of the fluid in the energy dissipation channel of the emitter. The simulation results are as follows: Fig. 9 , 10 As shown in the figure, after the water flows into the energy dissipation channel from the inlet, it is divided into two streams under the action of the water retaining block. Under the action of the annular flow channel, the direction of the water flow changes continuously, and an upper and lower vortex is formed in the front half of the flow channel unit. Under the action of the vortex, the water flow continuously collides and turbulently, consumes energy, and reduces the flow speed.

[0052] The CFD simulation method was used to numerically simulate the motion trajectory of the fluid particles in the energy dissipation channel of the emitter. The particle size was set to 0.1 mm. The simulation results are shown in Fig.11 As shown in the figure, it can be seen that the sand particles are carried by the water flow and quickly pass through the energy dissipation channel. After passing through the water blocking member, the sand particles directly enter the next unit flow channel without any dead corner. Therefore, the anti-blocking performance of the present invention is good.

[0053] The energy dissipation channel 2 of this embodiment has obtained a pressure-flow relationship curve through numerical simulation, such as Fig.12As shown in the figure, the horizontal axis is the water inlet pressure, unit is m, and the vertical axis is the average flow rate, unit is L / h. Fig.12 The flow index of energy dissipation channel 2 is 0.4784, and the hydraulic performance is good. When the working pressure of the emitter is 2-10m, the flow range is 4.3556-9.2976L / h.

Claims

1. A self-flushing sprinkler, characterized in that: The invention comprises an emitter body (1) and a rotation control device (3), wherein an energy dissipation flow channel (2) is arranged in the emitter body (1), and the rotation control device (3) is connected to the emitter body (1).

2. A self-flushing sprinkler as claimed in claim 1, characterized in that: The energy dissipation flow channel (2) comprises a plurality of flow channel units (6) connected in series, the flow channel units (6) being connected via a connecting channel (61), a water retaining member (7) being arranged in the flow channel unit (6), and the height of the flow channel unit (6) being the same as that of the water retaining member (7).

3. A self-flushing sprinkler as claimed in claim 2, characterized in that: The flow channel unit (6) is in the shape of a ring, the connecting channel (61) is arranged in the shape of a trumpet, and the water inlet end of the connecting channel (61) is a small end.

4. A self-flushing sprinkler as claimed in claim 2, characterized in that: The water retaining member (7) is in the shape of a hollow cylinder. A slot (71) is arranged at the bottom of the water retaining member (7). A groove (14) is arranged in the slot (71). The groove (14) is annular and arranged on the inner wall of the slot (71).

5. A self-flushing sprinkler as claimed in claim 2, characterized in that: The material of the water retaining member (7) includes permeable membrane nanoporous ceramics or permeable membrane graphene.

6. A self-flushing sprinkler as claimed in claim 1, characterized in that: The rotation control device (3) comprises an outer fan (8), an inner fan (9), a connecting column A (11) and a connecting column B (12); the outer fan (8) is arranged on the connecting column A (11); the inner fan (9) is arranged on the connecting column B (12); one end of the connecting column A (11) passes through one side of the emitter body (1) and is connected to the connecting column B (12); the connecting column B (12) is arranged in the energy dissipation flow channel (2).

7. A self-flushing sprinkler as claimed in claim 6, characterized in that: The connecting column A (11) is provided with a slide bar (101), the connecting column B (12) is provided with a slide groove A (102), the slide groove A (102) is provided with a slide groove B (103), the connecting column A (11) is inserted into the connecting column B (12) through the slide groove A (102) for sliding connection, and the slide bar (101) is inserted into the slide groove B (103) for sliding connection.

8. A self-flushing sprinkler as claimed in claim 6, characterized in that: A rotation anti-slip ring (13) is provided on the side of the connecting column B (12) away from the connecting column A (11).

9. A self-flushing sprinkler as claimed in claim 1, characterized in that: A cover plate (15) is arranged on the top of the emitter body (1), a through hole (10) is arranged on the cover plate (15), the rotation control device (3) passes through the cover plate (15) through the through hole (10), a water inlet groove (4) is arranged on one side of the emitter body (1), a water outlet groove (5) is arranged on the other side of the emitter body (1), the water outlet end of the water inlet groove (4) is connected to the water inlet end of the energy dissipation channel (2), the water inlet end of the water outlet groove (5) is connected to the water outlet end of the energy dissipation channel (2), and a grid member (16) is arranged in the water inlet groove (4).

10. A method for using the self-flushing emitter according to any one of claims 1 to 9, characterized in that: The following steps are involved: S1: Install the sprinkler body (1), install the inner fan (9) on the connecting column B (12), and then insert the connecting column B (12) into the water retaining member (7) for connection. S2: a grid member (16) is arranged in the water inlet groove (4), and then the cover plate (15) is mounted on the sprinkler body (1), and the outer fan (8) is mounted on the connecting column A (11), so that the connecting column A (11) passes through the cover plate (15) and is connected to the connecting column B (12), and the installation is completed. S3: When the wind starts to blow, the wind force drives the outer fan (8) to rotate, and drives the inner fan (9) to rotate through the connecting column A (11) and the connecting column B (12), thereby generating airflow in the water retaining member (7). The airflow passes through the water retaining member (7) and enters the energy dissipation channel (2), causing the internal blocking particles to become turbulent, so that the blocking particles flow out of the energy dissipation channel (2) along with the water flow, thereby reducing the probability of particles being retained in the channel.

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