Anti-clogging irrigation device with straightening spiral double flow channel and anti-clogging method

Abstract

The application relates to a clogging-resistant water distributor with a wave straight helical double flow channel and a clogging-resistant method, and relates to the technical field of drip irrigation. The clogging-resistant water distributor comprises a water distribution frame body, water inlet cavities and water outlet cavities are arranged at two ends of the water distribution frame body, and first flow channels and second flow channels are communicated between the water inlet cavities and the water outlet cavities. The first flow channels and the second flow channels are both helical, the first flow channels are in a wave shape along the extension direction of the first flow channels, the second flow channels are in a straight line shape along the extension direction of the second flow channels, and the ports of the first flow channels and the second flow channels close to one end of the water outlet cavities are arranged in a clamped angle mode. A closing piece for closing the port of the second flow channel is arranged in the water inlet cavity, and when clear flow changes into turbid flow, the closing piece can open the port of the second flow channel. The first flow channel is not prone to clogging, and the clogging-resistant water distributor is easy to cope with irrigation water flow with high turbidity.

Description

Technical Field

[0001] This application relates to the technical field of drip irrigation, and in particular to an anti-clogging irrigation device and method with a wave-shaped spiral dual-channel system. Background Technology

[0002] Drip irrigation is a highly efficient water-saving irrigation technology with the advantages of precision and controllability. Drip irrigation emitters are usually designed with complex energy dissipation channels, which can disturb pressurized water flow into turbulent flow to achieve the effect of pressure reduction and energy dissipation. For example, Chinese Patent No. CN117814096A discloses a gear-type adjustable flow pressure compensation emitter and method, which uses a gear-shaped channel formed by the outer teeth and inner teeth of the labyrinth channel to reduce the pressure and dissipate energy of pressurized water flow so that the water flow can meet the technical requirements of drip irrigation after passing through the emitter.

[0003] In the above scheme, although the gear-shaped flow channel can achieve the effect of pressure reduction and energy dissipation, there is a significant low-velocity zone in the gear-shaped flow channel. After the water flow dissipates energy, its ability to carry sediment will also decrease, making it easy for sediment to be deposited in the low-velocity zone of the gear-shaped flow channel and block the flow channel. In addition, for the Yellow River irrigation area with high sediment content, there are often water flows with high turbidity flowing through the water emitter, making the flow channel of the water emitter easy to be blocked by a large amount of sediment rushing in. Summary of the Invention

[0004] In order to prevent the energy dissipation channel of the irrigator from becoming clogged and to make it easier to handle irrigation water with high turbidity, this application provides an anti-clogging irrigator with a wave-shaped spiral dual-channel and an anti-clogging method.

[0005] In a first aspect, this application provides an anti-clogging water emitter with a wave-shaped spiral dual-channel design, employing the following technical solution: A wave-shaped spiral dual-channel anti-clogging water emitter includes an irrigation frame, with an inlet chamber and an outlet chamber respectively provided at both ends of the irrigation frame, and a first flow channel and a second flow channel connected between the inlet chamber and the outlet chamber; Both the first and second flow channels are spiral-shaped. The first flow channel is wavy along its extension direction, and the second flow channel is straight along its extension direction. The ports of the first and second flow channels near the outlet chamber are set at an angle. The inlet chamber is equipped with a sealing element for closing the port of the second flow channel. When the clear flow turns into turbid flow, the sealing element can open the port of the second flow channel.

[0006] Optionally, the water inlet chamber is connected to an inlet pipe for connecting to the main water supply pipe. A filter plate is installed at the connection between the inlet pipe and the water inlet chamber. The filter plate has multiple filter holes with a diameter larger than that of fine sand particles. The filter plate is connected to a sliding strip, which is slidably installed in a sliding groove on the inlet pipe. A first spring is installed between the sliding strip and the groove wall of the sliding groove. The first spring is used to drive the filter plate to abut against the inlet pipe. The force exerted on the filter plate by the clear flow is less than the elastic force of the first spring. The force exerted on the filter plate by the turbid flow after clogging the filter holes is greater than the elastic force of the first spring.

[0007] Optionally, the sealing component includes a sealing plate, a connecting rod, a support cylinder, and a second spring. The sealing plate covers the port of the second flow channel, the connecting rod is connected to the sealing plate and slides through the support cylinder, the support cylinder is connected to the cavity wall of the water inlet chamber, and the second spring is disposed between the support cylinder and the connecting rod. The second spring is used to drive the sealing plate to close the port of the second flow channel.

[0008] Optionally, the end of the connecting rod away from the sealing plate is connected to an opening block, and a first push rod is connected to the filter plate. The end of the first push rod away from the filter plate abuts against the first push surface provided on the opening block. When the filter plate is away from the water inlet pipe, the first push rod drives the sealing plate to open the port of the second flow channel through the first push surface.

[0009] Optionally, a switching valve is connected between the inlet pipe and the main water supply pipe, and the switching valve is connected to a backflush pipe. The switching valve is used to switch the main water supply pipe to be connected to the inlet pipe or to the backflush pipe. Under normal circumstances, the switching valve connects the main water supply pipe to the inlet pipe. When the turbid flow turns into a clear flow, the switching valve connects the main water supply pipe to the backflush pipe for a fixed duration. The water-filling frame is equipped with a backwash channel, which includes a main channel, a first branch channel, and a second branch channel. One end of the main channel is connected to the backwash pipe, and the other end is connected to the first branch channel and the second branch channel respectively. The first branch channel is connected to the inlet chamber. A transmission component is provided at the end of the first branch channel away from the main channel. The transmission component is used to release the seal of the second channel by means of water pressure. The second branch channel is connected to the first channel. The connection between the second branch channel and the first channel is located near the outlet chamber. A backwash valve is installed at the end of the second branch channel away from the main channel. The backwash valve is used to connect the second branch channel and the first channel by means of water pressure, and to allow the water in the second branch channel to flow into the inlet chamber through the first channel.

[0010] Optionally, the transmission component includes a piston, a support plate, a third spring, and a second push rod. The piston is slidably disposed in the first branch channel. The support plate is connected to the end of the first branch channel away from the main channel. The third spring is disposed between the piston and the support plate and is used to drive the piston away from the support plate. The second push rod is slidably disposed on the support plate and connected to the piston. The end of the second push rod away from the piston abuts against the second push surface disposed on the opening block. When the water flow impacts the piston, the second push rod drives the sealing plate to open the port of the second channel through the second push surface.

[0011] Optionally, the backflush valve includes a backflush shell and a fourth spring. The backflush shell is slidably disposed in the second branch channel, and the fourth spring is disposed between the backflush shell and the side wall of the second branch channel. The fourth spring is used to drive the backflush shell to slide into the second branch channel. When the backflush shell is located in the second branch channel, the backflush shell closes the connection between the second branch channel and the first channel. When the backflush shell slides out of the second branch channel and abuts against the side wall of the first channel, the backflush shell guides the water flow through the first channel into the inlet chamber.

[0012] Optionally, the switching valve includes a valve body, a valve core, a valve stem, a permanent magnet block, and an electromagnet. The valve body is connected to the inlet pipe, the backflush pipe, and the main water supply pipe, respectively. The valve core is slidably disposed in the valve body and connected to the valve stem. The valve stem is connected to the permanent magnet block. The electromagnet is connected in the valve body and is positioned opposite to the permanent magnet block. A fifth spring is installed between the valve stem and the valve body. The fifth spring is used to drive the valve core to close the backflush pipe so that the main water supply pipe is connected to the inlet pipe. Under normal conditions, the electromagnet is de-energized. When the turbid flow turns into a clear flow, the electromagnet is energized for a fixed time. The energized electromagnet drives the permanent magnet block to move so that the valve core closes the inlet pipe so that the main water supply pipe is connected to the backflush pipe.

[0013] Optionally, the electromagnet is electrically connected to a controller, and the controller is electrically connected to a turbidity sensor installed on the main water supply pipe. The turbidity sensor is used to output a turbidity signal. When the turbidity signal decreases from greater than a preset value to no greater than a preset value, the controller responds to the turbidity signal and is used to delay the electromagnet being energized for a fixed duration.

[0014] Secondly, this application provides an anti-clogging method for a wave-shaped spiral dual-channel anti-clogging water emitter, employing the following technical solution: A method for preventing clogging in a wave-shaped spiral dual-channel anti-clogging emitter, based on the aforementioned wave-shaped spiral dual-channel anti-clogging emitter, includes the following steps: Clear flow energy dissipation: When the clear flow flows into the inlet chamber, the sealing component closes the port of the second flow channel. The clear flow flows into the outlet chamber through the first flow channel. The wave-shaped first flow channel consumes the energy of the clear flow, reduces the pressure of the clear flow, and allows the clear flow to drip irrigation after the pressure is reduced. Flow channel switching: When the clear flow changes to turbid flow, the sealing component opens the port of the second flow channel, and the turbid flow flows into the outlet chamber through the first and second flow channels; Turbidity flow and sand discharge: The turbidity flow is unobstructed in the second channel, and most of the turbidity flows into the outlet cavity along the second channel; Turbidity flow energy dissipation: Both the first and second flow channels dissipate energy for the turbidity flow within themselves. The turbidity flow discharged from the first flow channel and the turbidity flow discharged from the second flow channel collide with each other in the outlet chamber, dissipating energy again and reducing the pressure of the turbidity flow, so that the turbidity flow can be drip-irrigated after the pressure is reduced.

[0015] In summary, this application includes at least one of the following beneficial technical effects: This application discloses a wave-shaped spiral dual-channel anti-clogging irrigation device, comprising an irrigation frame, a first channel, a second channel, a sealing element, a filter plate, a switching valve, a backflush pipe, and a backflush channel. When clear water flows into the inlet chamber, the sealing plate closes the second channel, and the clear water flows from the wave-shaped first channel into the outlet chamber after energy dissipation. When the clear water transforms into turbid water, the turbid water blocks the filter holes and pushes the filter plate away from the inlet pipe. The filter plate, while consuming the energy of the turbid water, drives the sealing plate to open the second channel, allowing the turbid water to flow from both the first and second channels into the outlet chamber after energy dissipation, and then discharge from both channels. Turbid flow further dissipates energy through impact; when turbid flow turns into clear flow, the switching valve closes the inlet pipe and opens the backflush pipe. The clear flow flows along the backflush pipe and the main flow channel into the first and second branch channels. The clear flow first drives the backflush valve to slide so that it can flow into the first channel, and then drives the piston to open the second channel. The clear flow flows from the first channel through the inlet chamber into the second channel, and from the second channel into the outlet chamber, so that the clear flow can backwash the first channel, which improves the anti-clogging performance of this application, making the first channel of this application less prone to clogging, and making this application easier to deal with irrigation water with high turbidity. Attached Figure Description

[0016] Figure 1 This is a structural schematic diagram of an embodiment of this application; Figure 2 This is a cross-sectional view of an embodiment of this application; Figure 3 This is an exploded view of the water-filling frame; Figure 4 yes Figure 2 Enlarged view at point A in the middle; Figure 5 yes Figure 2 Enlarged view at point B; Figure 6 This is a schematic diagram of the recoil shell structure; Figure 7 yes Figure 2 A magnified view of point C in the middle.

[0017] Explanation of reference numerals in the attached figures: 1. Water filling frame; 11. Inlet chamber; 12. Outlet chamber; 13. Inlet pipe; 131. Sliding groove; 14. Outlet pipe; 15. Flow channel body; 16. Flow channel shell; 17. Inlet shell; 18. Outlet shell; 2. First flow channel; 3. Second flow channel; 4. Sealing component; 41. Sealing plate; 42. Connecting rod; 43. Support cylinder; 44. Second spring; 45. Opening block; 451. First pushing surface; 452. Second pushing surface; 5. Filter plate; 51. Filter hole; 52. Sliding bar; 53. 54. First spring; 6. First push rod; 7. Switching valve; 8. Valve body; 9. Valve core; 10. Valve stem; 11. Permanent magnet; 12. Electromagnet; 13. Fifth spring; 24. Backflush pipe; 25. Backflush channel; 26. Main channel; 27. First branch channel; 28. Transmission component; 29. ​​Piston; 20. Support plate; 21. Third spring; 22. Second push rod; 23. Second branch channel; 24. Backflush valve; 25. Backflush shell; 26. Fourth spring. Detailed Implementation

[0018] The following is in conjunction with the appendix Figure 1-7 This application will be described in further detail.

[0019] This application discloses an anti-clogging water injector with a wave-shaped spiral dual-channel design. (Refer to...) Figure 1 and Figure 2 A wave-shaped spiral dual-channel anti-clogging water emitter includes a vertically arranged water emitter frame 1. The bottom end of the water emitter frame 1 is provided with a water inlet chamber 11, and the top end is provided with a water outlet chamber 12. A first flow channel 2 and a second flow channel 3 are connected between the water inlet chamber 11 and the water outlet chamber 12.

[0020] Reference Figure 2 and Figure 3 Both the first flow channel 2 and the second flow channel 3 are spiral-shaped. The first flow channel 2 is wavy along its own extension direction, and the second flow channel 3 is straight along its own extension direction. The ports of the first flow channel 2 and the second flow channel 3 near the water outlet chamber 12 are set at an angle.

[0021] Reference Figure 2 The inlet chamber 11 is provided with a sealing member 4 for closing the port of the second flow channel 3. When the clear flow turns into turbid flow, the sealing member 4 can open the port of the second flow channel 3.

[0022] In use, the sealing member 4 closes the port of the second flow channel 3, and the pressurized clear water flows from the inlet chamber 11 into the first flow channel 2. The wave-shaped first flow channel 2 can block the flow of the clear water. During the continuous collision process, the energy of the clear water is gradually consumed, so that the clear water flows into the outlet chamber 12 after the pressure is reduced. Compared with the gear-shaped flow channel, the wave-shaped first flow channel 2 reduces the low-speed zone of the water flow, so that the silt carried in the water flow is not easy to accumulate in the low-speed zone of the water flow and block the first flow channel 2. Thus, the first flow channel 2, as an energy dissipation channel, is not easy to be blocked.

[0023] When the clear flow turns into turbid flow, the sealing element 4 opens the port of the second flow channel 3, and the turbid flow flows into the first flow channel 2 and the second flow channel 3 simultaneously. Since there is no obstruction in the second flow channel 3, most of the turbid flow flows into the outlet chamber 12 from the second flow channel 3, and the silt carried in the turbid flow is not easily accumulated in the second flow channel 3 due to obstruction. The spiral second flow channel 3 performs preliminary energy dissipation on the turbid flow. The turbid flow discharged from the first flow channel 2 and the turbid flow discharged from the second flow channel 3 collide and dissipate energy in the outlet chamber 12, so that the water pressure requirements of drip irrigation can be met when the turbid flow is discharged. Therefore, for the Yellow River irrigation area with high sand content, the water with high turbidity is less likely to clog the irrigation device under the sand discharge action of the second flow channel 3.

[0024] Since the water flows from bottom to top in both the first channel 2 and the second channel 3, the water can also dissipate energy by gravity in the first channel 2 and the second channel 3, which further enhances the energy dissipation effect of the first channel 2 and the second channel 3 on the water flow.

[0025] Based on the above analysis, the first channel 2 can dissipate energy in the clear stream while being less likely to be blocked by the small amount of sediment carried in the clear stream, and the second channel 3 can dissipate energy in the turbid stream while being less likely to be blocked by the large amount of sediment carried in the turbid stream, thus improving the anti-clogging performance of this application. As a result, the first channel 2 of this application is less likely to be blocked, and this application is more likely to cope with irrigation water with high turbidity.

[0026] Reference Figure 2 and Figure 3 In this embodiment, the water filling frame 1 includes a flow channel body 15, a flow channel shell 16, an inlet shell 17, and an outlet shell 18. The flow channel body 15 is fixedly inserted into the flow channel shell 16. The flow channel groove opened on the outer side wall of the flow channel body 15 and the inner side wall of the flow channel shell 16 together form the first flow channel 2 and the second flow channel 3. The inlet shell 17 and the outlet shell 18 are respectively threaded onto the two ends of the flow channel shell 16. The inlet shell 17 and the end groove of the flow channel body 15 together form the water inlet cavity 11, and the outlet shell 18 and the end groove of the flow channel body 15 together form the water outlet cavity 12.

[0027] Reference Figure 2In order to further dissipate energy and reduce pressure of the turbid flow, an inlet pipe 13 is connected to the inlet chamber 11 for connecting to the main water supply pipe, and a filter plate 5 is provided at the connection between the inlet pipe 13 and the inlet chamber 11.

[0028] Reference Figure 4 The filter plate 5 has multiple filter holes 51 with a diameter larger than that of fine sand particles. The filter plate 5 is fixedly connected to three sliding strips 52. The sliding strips 52 are slidably disposed in the sliding grooves 131 opened on the water inlet pipe 13. A first spring 53 is fixed between the sliding strips 52 and the groove wall of the sliding groove 131. The first spring 53 is used to drive the filter plate 5 to abut against the water inlet pipe 13. The force exerted on the filter plate 5 by the clear flow is less than the elastic force of the first spring 53. After the turbid flow blocks the filter holes 51, the force exerted on the filter plate 5 is greater than the elastic force of the first spring 53.

[0029] Reference Figure 2 The water outlet chamber 12 is connected to a water outlet pipe 14 so that the water in the water outlet chamber 12 can be discharged.

[0030] Since the diameter of the filter hole 51 is larger than the particle size of the fine sand, the fine sand can pass directly through the filter hole 51 without being intercepted by the filter plate 5. Since the force exerted on the filter plate 5 by the clear flow is less than the elastic force of the first spring 53, the position of the filter plate 5 will remain unchanged when the clear flow flows through the filter plate 5, so that the filter plate 5 does not consume too much energy of the clear flow.

[0031] When the turbid flow reaches the position of the filter plate 5, a large amount of mud and sand carried in the turbid flow will quickly accumulate at the filter hole 51. Under the bridging effect, the fine sand particles can quickly block the filter hole 51, so that the filter plate 5 completely seals the water inlet pipe 13. Since the force exerted on the filter plate 5 after the turbid flow blocks the filter hole 51 is greater than the elastic force of the first spring 53, the turbid flow can push the filter plate 5 away from the water inlet pipe 13 and open the water inlet pipe 13. When the turbid flow flows into the water inlet chamber 11, it needs to overcome the elastic force of the first spring 53, so that the filter plate 5 can dissipate the energy of the turbid flow in advance to avoid the phenomenon of insufficient energy dissipation of the turbid flow.

[0032] Specifically, refer to Figure 4 The closure component 4 includes a closure plate 41, a connecting rod 42, a support cylinder 43, and a second spring 44.

[0033] The sealing plate 41 is installed at the port of the second flow channel 3. The connecting rod 42 is fixed to the sealing plate 41 and slides through the support cylinder 43. The support cylinder 43 is fixed to the cavity wall of the water inlet chamber 11. The second spring 44 is fixed between the support cylinder 43 and the connecting rod 42. The second spring 44 is used to drive the sealing plate 41 to close the port of the second flow channel 3.

[0034] The sealing plate 41 is slidably connected to the wall of the water inlet chamber 11 via the connecting rod 42 and the support cylinder 43. Under the elastic force of the second spring 44, the sealing plate 41 can close the port of the second flow channel 3. Without external force, the water can only flow into the water outlet chamber 12 from the first flow channel 2. After overcoming the elastic force of the second spring 44, the water can flow into the water outlet chamber 12 from the first flow channel 2 and the second flow channel 3 at the same time, which facilitates the switching from energy dissipation by the first flow channel 2 alone to energy dissipation by the first flow channel 2 and the second flow channel 3 together.

[0035] Reference Figure 4 In order to open the sealing plate 41 just after the clear flow turns into turbid flow, the end of the connecting rod 42 away from the sealing plate 41 is fixedly connected to the opening block 45, and the first push rod 54 is fixedly connected to the filter plate 5.

[0036] The end of the first push rod 54 away from the filter plate 5 abuts against the first push surface 451 provided on the opening block 45. The first push surface 451 is inclined relative to the sliding direction of the closing plate 41. When the filter plate 5 is away from the water inlet pipe 13, the first push rod 54 drives the closing plate 41 to open the port of the second flow channel 3 through the first push surface 451.

[0037] When the turbid flow pushes the filter plate 5 away from the inlet pipe 13, the filter plate 5 can drive the closing plate 41 away from the port of the second flow channel 3 through the first push rod 54 and the first push surface 451 on the opening block 45, so that the port of the second flow channel 3 can open adaptively after the turbid flow flows into the inlet chamber 11.

[0038] Reference Figure 2 To facilitate the cleaning of the silt accumulated in the first flow channel 2 after the turbid flow turns into a clear flow, a switching valve 6 is connected between the inlet pipe 13 and the main water supply pipe. The switching valve 6 is connected to the backflushing pipe 7. The switching valve 6 is used to switch the connection between the main water supply pipe and the inlet pipe 13 or the backflushing pipe 7. Under normal circumstances, the switching valve 6 connects the main water supply pipe and the inlet pipe 13 for drip irrigation. When the turbid flow turns into a clear flow, the switching valve 6 connects the main water supply pipe and the backflushing pipe 7 for a fixed period of time for backflushing cleaning.

[0039] The water filling frame 1 is provided with a backwash channel 8, which includes a main channel 81, a first branch channel 82 and a second branch channel 83. One end of the main channel 81 is connected to the backwash pipe 7, and the other end is connected to the first branch channel 82 and the second branch channel 83 respectively.

[0040] The main channel 81 is located on the main body of the channel 15 and the shell of the channel 16, while the first branch channel 82 and the second branch channel 83 are both located on the main body of the channel 15.

[0041] The end of the first branch channel 82 away from the main channel 81 is connected to the inlet chamber 11. A transmission component 821 is provided at the end of the first branch channel 82 away from the main channel 81. The transmission component 821 is used to release the seal of the second channel 3 by means of water pressure, so that the backwash water can be discharged from the second channel 3 into the outlet chamber 12.

[0042] The end of the second branch channel 83 away from the main channel 81 is connected to the first channel 2. The connection between the second branch channel 83 and the first channel 2 is located near the outlet chamber 12. A backwash valve 831 is provided at the end of the second branch channel 83 away from the main channel 81. The backwash valve 831 is used to connect the second branch channel 83 and the first channel 2 by means of water flow pressure, and to allow the water in the second branch channel 83 to flow into the inlet chamber 11 through the first channel 2, so as to flush the first channel 2.

[0043] Under normal conditions, the switching valve 6 connects the main water supply pipe to the inlet pipe 13, allowing either clear or turbid flow to directly enter the inlet chamber 11 for energy dissipation. When the turbid flow changes to clear flow, the switching valve 6 connects the main water supply pipe to the backflush pipe 7 for a fixed duration, allowing the clear flow to enter the backflush pipe 7 and then flow through the main channel 81 into the first branch channel 82 and the second branch channel 83.

[0044] The transmission component 821 releases the seal of the sealing component 4 on the second flow channel 3 by means of the water pressure of the clear flow, so that the clear flow can pass through the second flow channel 3. The backwash valve 831 is activated by means of the water pressure of the clear flow, so that the second branch flow channel 83 is connected to the first flow channel 2. The clear flow flows into the first flow channel 2 under the guidance of the backwash valve 831, and flows from the first flow channel 2 into the water inlet chamber 11. The clear flow in the water inlet chamber 11 then flows from the second flow channel 3 into the water outlet chamber 12.

[0045] When the clear water flows in the first channel 2, it can wash away the silt accumulated in the first channel 2 to dredge the first channel 2. Since the second channel 3 is not prone to silt accumulation, the silt in the first channel 2 can be discharged from the second channel 3 into the outlet chamber 12. Thus, this application can backwash the first channel 2 without disassembly.

[0046] Specifically, refer to Figure 4 The transmission component 821 includes a piston 8211, a support plate 8212, a third spring 8213, and a second push rod 8214.

[0047] The piston 8211 is slidably disposed in the first branch channel 82. The support plate 8212 is fixedly connected to the end of the first branch channel 82 away from the main channel 81. The third spring 8213 is fixedly disposed between the piston 8211 and the support plate 8212 and is used to drive the piston 8211 away from the support plate 8212. The second push rod 8214 is slidably disposed on the support plate 8212 and is fixedly connected to the piston 8211. The end of the second push rod 8214 away from the piston 8211 abuts against the second push surface 452 disposed on the opening block 45. The second push surface 452 is inclined relative to the sliding direction of the closing plate 41. When the water flow impacts the piston 8211, the second push rod 8214 drives the closing plate 41 to open the port of the second channel 3 through the second push surface 452.

[0048] The clear flow can push the piston 8211 to slide towards the support plate 8212. The piston 8211 overcomes the elastic force of the third spring 8213 and drives the second push rod 8214 to move. The second push rod 8214 drives the opening block 45 to move through the second push surface 452, so that the closing plate 41 can open the port of the second flow channel 3, thereby enabling the closing plate 41 to open the port of the second flow channel 3 when the clear flow backflows into the first flow channel 2.

[0049] Specifically, refer to Figure 5 The backflush valve 831 includes a backflush housing 8311 and a fourth spring 8312.

[0050] The recoil shell 8311 is slidably disposed in the second branch channel 83, and the fourth spring 8312 is fixed between the recoil shell 8311 and the side wall of the second branch channel 83. The fourth spring 8312 is used to drive the recoil shell 8311 to slide into the second branch channel 83.

[0051] Among them, refer to Figure 4 and Figure 5 The force of the fourth spring 8312 is less than that of the third spring 8213, so that the recoil shell 8311 can act before the piston 8211.

[0052] Reference Figure 2 and Figure 5 When the backflush shell 8311 is located in the second branch channel 83, the backflush shell 8311 seals the connection between the second branch channel 83 and the first channel 2; when the backflush shell 8311 slides out of the second branch channel 83 and abuts against the side wall of the first channel 2, the backflush shell 8311 guides the water flow through the first channel 2 into the water inlet chamber 11.

[0053] Among them, reference Figure 5 and Figure 6 The backflush shell 8311 is a shell-like structure with openings on one side and one end. The water in the second branch channel 83 flows into the first channel 2 from the two openings of the backflush shell 8311.

[0054] The clear flow can apply pressure to the backflush shell 8311 to overcome the elastic force of the fourth spring 8312 and push the backflush shell 8311 into the first flow channel 2. The backflush shell 8311 guides the clear flow into the first flow channel 2 and makes the clear flow flow from the first flow channel 2 into the water inlet chamber 11, so that the clear flow can backwash the first flow channel 2.

[0055] Since the backwash shell 8311 can act before the piston 8211, after the clear water flows into the inlet chamber 11 from the first flow channel 2, the clear water can backwash the filter plate 5 to clean the mud and sand accumulated in the filter holes 51 due to bridging, so that the filter plate 5 can restore its ability to allow clear water to pass through.

[0056] Specifically, refer to Figure 7 The switching valve 6 includes a valve body 61, a valve core 62, a valve stem 63, a permanent magnet block 64, and an electromagnet 65.

[0057] The valve body 61 is connected to the inlet pipe 13, the backflush pipe 7 and the main water supply pipe respectively. The valve core 62 is slidably disposed in the valve body 61 and is fixedly connected to the valve stem 63. The valve stem 63 is slidably connected to the valve body 61 and is fixedly connected to the permanent magnet block 64. The electromagnet 65 is fixedly connected in the valve body 61 and is positioned opposite to the permanent magnet block 64.

[0058] A fifth spring 66 is fixed between the valve stem 63 and the valve body 61. The fifth spring 66 is used to drive the valve core 62 to close the backflush pipe 7 so that the main water supply pipe is connected to the inlet pipe 13. Under normal conditions, the electromagnet 65 is de-energized. When the turbid flow turns into a clear flow, the electromagnet 65 is energized for a fixed time. The energized electromagnet 65 drives the permanent magnet block 64 to move so that the valve core 62 closes the inlet pipe 13 so that the main water supply pipe is connected to the backflush pipe 7.

[0059] Under normal conditions, electromagnet 65 is de-energized. The fifth spring 66 can drive valve core 62 to close backwash pipe 7 through its elastic force, allowing water to flow directly into inlet pipe 13. When the turbid flow turns into clear flow, electromagnet 65 can be energized for a fixed duration. The energized electromagnet 65 can drive permanent magnet block 64 to move. Permanent magnet block 64 can drive valve core 62 to slide through valve stem 63, so that valve core 62 can close inlet pipe 13 within a fixed duration, allowing water to flow directly into backwash pipe 7. Thus, after the water changes from turbid to clear, it can backwash the first flow channel 2 within a fixed time.

[0060] Reference Figure 7 In order to control the electromagnet 65 to be energized when the turbid flow turns into a clear flow, the electromagnet 65 is electrically connected to a controller, and the controller is electrically connected to a turbidity sensor installed on the main water supply pipe. The turbidity sensor is used to output a turbidity signal.

[0061] Reference Figure 2 and Figure 7When the turbidity signal decreases from greater than the preset value to no greater than the preset value, the controller responds to the turbidity signal and delays the energization of the electromagnet 65 for a fixed duration so that the clear flow can backwash the first flow channel 2 within a fixed time length.

[0062] The controller and turbidity sensor are not shown in the figure.

[0063] When the turbidity signal output by the turbidity sensor decreases from greater than a preset value to no greater than a preset value, the controller can control the electromagnet 65 to be energized for a fixed duration based on the turbidity signal delay. This allows the electromagnet 65 to magnetically drive the permanent magnet block 64 to move after the turbidity signal is no greater than the preset value, thereby enabling the timing of the electromagnet 65 to be energized to be automatically controlled based on the water quality.

[0064] It should be noted that the controller delays the energization of the electromagnet 65 to allow the residual turbidity in the main water supply pipe to be cleared before switching the position of the valve core 62.

[0065] The implementation principle of the anti-clogging water injector with wave-shaped spiral dual-channel in this application embodiment is as follows: When in use, the clear water passes through the filter plate 5 and flows into the water inlet chamber 11. The clear water in the water inlet chamber 11 flows into the water outlet chamber 12 along the first flow channel 2. The wave-shaped first flow channel 2 dissipates the energy of the clear water and reduces the accumulation of mud and sand in the low-speed zone of the water flow.

[0066] When the clear flow turns into a turbid flow, the large amount of silt carried by the turbid flow can quickly block the filter plate 5. The turbid flow pushes the filter plate 5 away from the inlet pipe 13. The turbid flow flows into the inlet chamber 11 from the space between the filter plate 5 and the inlet pipe 13. The filter plate 5 dissipates the energy of the turbid flow. The filter plate 5 drives the sealing plate 41 to open the second flow channel 3 through the first push rod 54, the first push surface 451 on the opening block 45 and the connecting rod 42. The turbid flow flows into the outlet chamber 12 from the first flow channel 2 and the second flow channel 3. The first flow channel 2 and the second flow channel 3 dissipate the energy of the turbid flow. The turbid flow discharged from the first flow channel 2 and the second flow channel 3 impacts and dissipates energy, so that the turbid flow can meet the water pressure requirements of drip irrigation.

[0067] When the turbid flow turns into a clear flow, the controller delays the energization of the electromagnet 65 for a fixed duration based on the turbidity signal output by the turbidity sensor. The energized electromagnet 65 magnetically drives the permanent magnet block 64 to move, causing the valve core 62 to close the inlet pipe 13 and open the backflush pipe 7. The clear flow flows into the first branch channel 82 and the second branch channel 83 along the backflush pipe 7 and the main channel 81, respectively. The clear flow first drives the backflush valve 831 to slide in the second branch channel 83, allowing the clear flow to flow into the inlet chamber 11 through the first channel 2. The clear flow then drives the piston 8211 to slide in the first branch channel 82, causing the sealing plate 41 to open the second channel 3. The clear flow flows into the outlet chamber 12 from the second channel 3, enabling the clear flow to clear the first channel 2 and the filter plate 5, thereby improving the anti-clogging performance of this application, making the first channel 2 of this application less prone to clogging, and making this application easier to handle irrigation water with high turbidity.

[0068] This application also discloses an anti-clogging method for a wave-shaped spiral dual-channel anti-clogging water injector.

[0069] A method for preventing clogging in a wave-shaped spiral dual-channel anti-clogging emitter, based on the aforementioned wave-shaped spiral dual-channel anti-clogging emitter, includes the following steps: Clear flow energy dissipation: When the clear flow flows into the inlet chamber 11, the sealing component 4 seals the port of the second flow channel 3, and the clear flow flows into the outlet chamber 12 through the first flow channel 2. The wave-shaped first flow channel 2 consumes the energy of the clear flow, reduces the pressure of the clear flow, and allows the clear flow to drip irrigation after the pressure is reduced. Flow channel switching: When the clear flow turns into turbid flow, the turbid flow blocks the filter plate 5 and pushes the filter plate 5 away from the inlet pipe 13. The filter plate 5 drives the sealing plate 41 to open the port of the second flow channel 3. The turbid flow flows into the outlet chamber 12 through the first flow channel 2 and the second flow channel 3. Turbidity flow and sand discharge: The turbidity flow is unobstructed in the second channel 3, and most of the turbidity flows into the outlet cavity 12 along the second channel 3. Turbidity flow energy dissipation: Both the first flow channel 2 and the second flow channel 3 dissipate energy for the turbidity flow inside themselves. The turbidity flow discharged from the first flow channel 2 and the turbidity flow discharged from the second flow channel 3 collide with each other in the water outlet chamber 12 to dissipate energy again, reduce the pressure of the turbidity flow, and allow the turbidity flow to drip irrigation after the pressure is reduced. Clear flow backwash: When the turbid flow turns into clear flow, the controller controls the electromagnet 65 to be energized based on the turbidity signal of the turbidity sensor after a delay. The energized electromagnet 65 drives the valve core 62 to close the inlet pipe 13 and open the backwash pipe 7. The clear flow flows into the first branch channel 82 and the second branch channel 83 through the backwash pipe 7 and the main channel 81. The clear flow first flows into the first channel 2 through the backwash valve 831, and then opens the second channel 3 through the piston 8211. The clear flow flows from the first channel 2 into the second channel 3 through the inlet chamber 11, and then flows from the second channel 3 into the outlet chamber 12. The clear flow backwashes the first channel 2 and the filter plate 5. Anti-clogging drip irrigation: Repeated steps of clear flow energy dissipation and clear flow backflushing ensure that both clear and turbid flows can be discharged smoothly for stable drip irrigation.

[0070] By adopting the above method, this application uses a method of switching the energy dissipation of the first flow channel 2 to the energy dissipation of both the first flow channel 2 and the second flow channel 3 to deal with the water flow with high turbidity in the Yellow River irrigation area. This enables the emitter to cope with the irrigation water flow with high turbidity. After the water flow with high turbidity passes through, this application uses a method of switching the flow channel without disassembling to backwash the first flow channel 2, so that the first flow channel 2 can automatically restore its energy dissipation and drainage capacity. This makes the first flow channel of this application less prone to blockage and makes this application easier to deal with the irrigation water flow with high turbidity.

[0071] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A wave-shaped spiral dual-channel anti-clogging water injector, characterized in that: It includes a water-filling frame (1), with an inlet chamber (11) and an outlet chamber (12) respectively at both ends of the water-filling frame (1), and a first flow channel (2) and a second flow channel (3) connecting the inlet chamber (11) and the outlet chamber (12); Both the first flow channel (2) and the second flow channel (3) are spiral-shaped. The first flow channel (2) is wavy along its own extension direction, and the second flow channel (3) is straight along its own extension direction. The ports of the first flow channel (2) and the second flow channel (3) near the end of the water outlet chamber (12) are set at an angle. The inlet chamber (11) is provided with a sealing member (4) for closing the port of the second flow channel (3). When the clear flow turns into turbid flow, the sealing member (4) can open the port of the second flow channel (3).

2. The anti-clogging water injector with a wave-shaped spiral dual-channel design according to claim 1, characterized in that: The water inlet chamber (11) is connected to a water inlet pipe (13) for connecting to the main water supply pipe. A filter plate (5) is provided at the connection between the water inlet pipe (13) and the water inlet chamber (11). The filter plate (5) has multiple filter holes (51) with a diameter larger than that of fine sand particles. The filter plate (5) is connected to a sliding strip (52). The sliding strip (52) is slidably disposed in a sliding groove (131) opened on the water inlet pipe (13). A first spring (53) is provided between the sliding strip (52) and the groove wall of the sliding groove (131). The first spring (53) is used to drive the filter plate (5) to abut against the water inlet pipe (13). The force exerted on the filter plate (5) by the clear flow is less than the elastic force of the first spring (53). The force exerted on the filter plate (5) by the turbid flow after blocking the filter holes (51) is greater than the elastic force of the first spring (53).

3. The anti-clogging water injector with a wave-shaped spiral dual-channel design according to claim 2, characterized in that: The sealing component (4) includes a sealing plate (41), a connecting rod (42), a support tube (43), and a second spring (44). The sealing plate (41) covers the port of the second flow channel (3). The connecting rod (42) is connected to the sealing plate (41) and slides through the support tube (43). The support tube (43) is connected to the cavity wall of the water inlet chamber (11). The second spring (44) is disposed between the support tube (43) and the connecting rod (42). The second spring (44) is used to drive the sealing plate (41) to close the port of the second flow channel (3).

4. The anti-clogging water injector with a wave-shaped spiral dual-channel design according to claim 3, characterized in that: The end of the connecting rod (42) away from the sealing plate (41) is connected to an opening block (45). A first push rod (54) is connected to the filter plate (5). The end of the first push rod (54) away from the filter plate (5) abuts against the first push surface (451) provided on the opening block (45). When the filter plate (5) is away from the water inlet pipe (13), the first push rod (54) drives the sealing plate (41) to open the port of the second flow channel (3) through the first push surface (451).

5. The anti-clogging water injector with a wave-shaped spiral dual-channel design according to claim 4, characterized in that: A switching valve (6) is connected between the inlet pipe (13) and the main water supply pipe. The switching valve (6) is connected to the backwash pipe (7). The switching valve (6) is used to switch the main water supply pipe to be connected to the inlet pipe (13) or to the backwash pipe (7). Under normal conditions, the switching valve (6) connects the main water supply pipe to the inlet pipe (13). When the turbid flow turns into a clear flow, the switching valve (6) connects the main water supply pipe to the backwash pipe (7) for a fixed duration. The water-filling frame (1) is provided with a backwash channel (8), which includes a main channel (81), a first branch channel (82) and a second branch channel (83). One end of the main channel (81) is connected to the backwash pipe (7), and the other end is connected to the first branch channel (82) and the second branch channel (83) respectively. The first branch channel (82) is connected to the inlet chamber (11). A transmission component (821) is provided at the end of the first branch channel (82) away from the main channel (81). The transmission component (821) is used to release the seal of the second channel (3) by means of water pressure. The second branch channel (83) is connected to the first channel (2). The connection between the second branch channel (83) and the first channel (2) is located near the outlet chamber (12). A backwash valve (831) is provided at the end of the second branch channel (83) away from the main channel (81). The backwash valve (831) is used to connect the second branch channel (83) and the first channel (2) by means of water flow pressure, and to allow the water in the second branch channel (83) to flow into the inlet chamber (11) through the first channel (2).

6. The anti-clogging water injector with a wave-shaped spiral dual-channel design according to claim 5, characterized in that: The transmission component (821) includes a piston (8211), a support plate (8212), a third spring (8213), and a second push rod (8214). The piston (8211) is slidably disposed within the first branch channel (82). The support plate (8212) is connected to the end of the first branch channel (82) away from the main channel (81). The third spring (8213) is disposed between the piston (8211) and the support plate (8212) and is used to drive the piston (8211). Away from the support plate (8212), the second push rod (8214) slides through the support plate (8212) and is connected to the piston (8211). The end of the second push rod (8214) away from the piston (8211) abuts against the second push surface (452) provided on the opening block (45). When the water flow impacts the piston (8211), the second push rod (8214) drives the closing plate (41) to open the port of the second flow channel (3) through the second push surface (452).

7. The anti-clogging water injector with a wave-shaped spiral dual-channel design according to claim 5, characterized in that: The backflush valve (831) includes a backflush shell (8311) and a fourth spring (8312). The backflush shell (8311) is slidably disposed in the second branch channel (83). The fourth spring (8312) is disposed between the backflush shell (8311) and the side wall of the second branch channel (83). The fourth spring (8312) is used to drive the backflush shell (8311) to slide into the second branch channel (83). When the backflush shell (8311) is located in the second branch channel (83), the backflush shell (8311) closes the connection between the second branch channel (83) and the first channel (2). When the backflush shell (8311) slides out of the second branch channel (83) and abuts against the side wall of the first channel (2), the backflush shell (8311) guides the water flow through the first channel (2) into the inlet chamber (11).

8. The anti-clogging water injector with a wave-shaped spiral dual-channel design according to claim 5, characterized in that: The switching valve (6) includes a valve body (61), a valve core (62), a valve stem (63), a permanent magnet (64), and an electromagnet (65). The valve body (61) is connected to the inlet pipe (13), the backflush pipe (7), and the main water supply pipe. The valve core (62) is slidably disposed in the valve body (61) and connected to the valve stem (63). The valve stem (63) is connected to the permanent magnet (64). The electromagnet (65) is connected in the valve body (61) and is positioned opposite to the permanent magnet (64). A fifth spring (66) is provided between the valve stem (63) and the valve body (61). The fifth spring (66) is used to drive the valve core (62) to close the backflush pipe (7) so that the main water supply pipe is connected to the inlet pipe (13). Under normal conditions, the electromagnet (65) is de-energized. When the turbid flow turns into a clear flow, the electromagnet (65) is energized for a fixed time. The energized electromagnet (65) drives the permanent magnet block (64) to move so that the valve core (62) closes the inlet pipe (13) so that the main water supply pipe is connected to the backflush pipe (7).

9. The anti-clogging water injector with a wave-shaped spiral dual-channel design according to claim 8, characterized in that: The electromagnet (65) is electrically connected to a controller, and the controller is electrically connected to a turbidity sensor installed on the main water supply pipe. The turbidity sensor is used to output a turbidity signal. When the turbidity signal decreases from greater than a preset value to no greater than a preset value, the controller responds to the turbidity signal and is used to delay the electromagnet (65) from being energized for a fixed duration.

10. A method for preventing clogging in a wave-shaped spiral dual-channel anti-clogging water emitter, characterized in that: A wave-shaped spiral dual-channel anti-clogging water injector according to any one of claims 1-9 includes the following steps: Clear flow energy dissipation: When the clear flow flows into the inlet chamber (11), the sealing part (4) closes the port of the second flow channel (3), and the clear flow flows into the outlet chamber (12) through the first flow channel (2). The wave-shaped first flow channel (2) consumes the energy of the clear flow, reduces the pressure of the clear flow, and allows the clear flow to drip irrigation after the pressure is reduced. Flow channel switching: When the clear flow changes to turbid flow, the sealing part (4) opens the port of the second flow channel (3), and the turbid flow flows into the outlet chamber (12) through the first flow channel (2) and the second flow channel (3); Turbidity discharge: Turbidity flows unobstructed in the second channel (3), and most of the turbidity flows into the outlet cavity (12) along the second channel (3); Turbidity dissipation: Both the first flow channel (2) and the second flow channel (3) dissipate the energy of the turbidity flowing inside them. The turbidity discharged from the first flow channel (2) and the turbidity discharged from the second flow channel (3) collide with each other in the water outlet chamber (12) to dissipate energy again, reduce the pressure of the turbidity, and allow the turbidity to drip irrigation after the pressure is reduced.

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