Water-saving filtered irrigation water device

Abstract

The application relates to the field of water-saving irrigation technology, in particular to a water-saving and filtering irrigation water device which comprises a primary cyclone, a filter cylinder, a sand cleaning unit, a secondary cyclone, a drip irrigation unit, an anti-blocking unit and a driving motor; the sand cleaning unit is arranged in the filter cylinder; when the filter cylinder is blocked due to impurity accumulation, the impurities adhered to the inner wall of the filter screen cylinder are directly sucked away by the suction pipe of the sand cleaning unit in a negative pressure mode, so that the filtering performance of the filter cylinder is restored, the whole sand cleaning process does not need to introduce and waste the filtered clear water, and the anti-blocking unit cooperates with the sand cleaning unit to pressurize and adjust the water supply main pipe through the anti-blocking unit when the filter cylinder is cleaned, so that the flow speed of water flow in the drip irrigation device is increased, thereby reducing the phenomenon that the silt and clay particles are deposited and hardened at the drip irrigation device.

Description

Technical Field

[0001] This invention relates to the field of water-saving irrigation technology, specifically to a water-saving filtration irrigation water device. Background Technology

[0002] Irrigation technology is an important means for modern agriculture to achieve efficient use of water resources. Drip irrigation, as a precision irrigation method, can deliver water directly to the roots of crops, significantly reducing surface evaporation and deep seepage, and plays an important role in water-scarce areas. Especially in the arid northwest region, irrigation water sources are mostly river water or shallow groundwater, which generally contain a lot of sand and clay impurities. Sand can easily cause blockages in the irrigation system during use, directly affecting the operational stability and service life of irrigation equipment.

[0003] Current filtration devices used in micro-irrigation or drip irrigation systems typically employ filter screens or cartridges to intercept sand and suspended solids in the water. As filtration continues, sand particles accumulate on the surface of the filter media, leading to increased filtration resistance and decreased water output. To address this, most existing filtration equipment is equipped with a backwashing function, using treated clarified water to pass back through the filter media to flush out the trapped impurities and restore filtration performance. However, this method has problems in practical applications: the backwashing process consumes a large amount of already filtered clarified water. In water-scarce regions such as Northwest China, this water consumption for self-cleaning can lead to reduced water output efficiency, or it may be necessary to store clarified water in advance for backwashing.

[0004] At the same time, the water flow after centralized filtration also faces new challenges in the drip irrigation stage. In addition to coarser sand, the irrigation water in Northwest China often contains extremely fine silt and clay particles. These fine particles are difficult to remove completely in conventional filtration. After entering the drip irrigation pipeline with the water flow, they tend to gradually deposit and clump in the narrow flow channels and outlet holes of the drip head, causing uneven flow or even blockage and failure of the drip head. Once the drip head is blocked, some crops cannot obtain water, affecting crop growth. Replacing or cleaning blocked drip heads on a large scale significantly increases maintenance costs and labor intensity.

[0005] Therefore, a water-saving filtration irrigation water device is proposed. Summary of the Invention

[0006] The purpose of this invention is to provide a water-saving filtration irrigation water device. By setting a suction pipe of the sand-clearing unit, when blockage occurs in the filter cartridge, there is no need to input external water and lose clarified water. Furthermore, by cooperating with the sand-clearing unit, when the filter cartridge is being cleaned of sand, the anti-blocking unit pressurizes and regulates the water supply main pipe, increasing the flow rate of water in the drip irrigation device, thereby reducing the deposition and caking of silt and clay particles in the drip irrigation device.

[0007] To achieve the above objectives, the present invention provides the following technical solution: A water-saving filtration irrigation device includes a primary hydrocyclone, a filter cartridge, a sand-cleaning unit, a secondary hydrocyclone, a drip irrigation unit, and an anti-clogging unit. The primary hydrocyclone is connected to the filter cartridge via a pipe. The sand-cleaning unit is located inside the filter cartridge. The secondary hydrocyclone is connected to the sand-cleaning unit via a pipe and to the anti-clogging unit via a pipe. The filter cartridge is connected to the drip irrigation unit via a water outlet. A filter screen is installed inside the filter cartridge. The sand-cleaning unit includes a water pipe and several sets of suction pipes evenly distributed on the side wall of the water pipe. When the filter cartridge is clogged, the sand-cleaning unit removes impurities from the inner wall of the filter cartridge through the suction pipes. The anti-clogging unit pressurizes the water flow in the drip irrigation unit when the sand-cleaning unit is activated.

[0008] As is known, filters are a common method for filtering fine impurities such as sand. However, during filtration, impurities can adhere to and deposit on the filter screen. Current technology typically uses backwashing to remove these impurities. However, if the water supply is interrupted during backwashing, it will affect the continuous operation of the device. If the water supply is not interrupted, the rinsing efficiency will be limited, and the cleaning efficiency of the filter screen cannot be guaranteed. Some impurities will remain on the filter screen and cannot be completely cleaned. It is difficult to simultaneously ensure the cleaning efficiency of the filter screen and the continuous operation of the device. Furthermore, the backwashing process uses filtered clear water, which can affect the water output efficiency of the device in water-scarce areas with limited water resources.

[0009] Preferably, the filter cartridge includes a bottom water inlet area, a clean water area connected to the outer wall of the filter screen cylinder, and a connecting area disposed above the filter screen cylinder. A water inlet is provided on one side of the water inlet area, a water outlet is provided on one side of the connecting area, and a waste outlet is provided at the bottom of the filter cartridge. A lower end plate is provided between the water inlet area and the clean water area, separating the water inlet area from the clean water area. An upper end plate is provided between the clean water area and the connecting area, separating the clean water area from the connecting area.

[0010] In the above scheme, the water separated by the primary hydrocyclone is transported to the inlet of the filter cylinder. The water then flows through the filter screen cylinder to the drip irrigation unit, where fine sand and impurities are filtered out. Under the separation of the lower end plate, only the water filtered through the filter screen cylinder flows to the clean water area, and most impurities are discharged along the bottom outlet of the filter cylinder due to sedimentation.

[0011] Preferably, the water pipe is a venturi pipe, and the water pipe is located on the axis of the filter cylinder.

[0012] In the above scheme, the water pipe is set as a venturi pipe, and the filter screen section is the throat. When water enters the water pipe, the water flow through the throat is accelerated, and the suction pipe connected to the water pipe at the throat section generates negative pressure. When the filter screen is stuck or even blocked, the negative pressure generated by the suction pipe will suck the impurities on the inner wall of the filter screen into the water pipe, thereby cleaning the filter screen.

[0013] Preferably, the sand-clearing unit also includes blades disposed in the connection area, the blades being fixedly connected to the outer wall of the water pipe; the water pipe is provided with several sets of openings corresponding to the blades.

[0014] In the above scheme, when water flows out of the water pipe, the water flow impacts the blades through the outlet, causing the water pipe and the filter cylinder to rotate relative to each other. When the filter cylinder rotates, the suction pipe can more comprehensively cover the filter cylinder, reducing blind spots in the cleaning process of the filter cylinder.

[0015] Preferably, the sand-cleaning unit further includes a pressure plug disposed inside the water pipe, and a spring telescopic rod connected to the upper end of the pressure plug; the upper end of the spring telescopic rod is fixedly connected to the water pipe; the water pipe passes through the filter cylinder, and a drive motor connected to the water pipe is disposed at the top of the filter cylinder.

[0016] In the above scheme, the water inlet area at the bottom of the filter cylinder flows in along the filter screen cylinder. When the filter screen cylinder is blocked, the water pressure increases. At this time, the water pressure will be greater than the pressure of the pressure plug, and the water will preferentially enter along the water pipe. At this time, the pressure plug is impacted by the water flow, which drives the spring telescopic rod to contract, so as to realize the flow of water in the water pipe.

[0017] Preferably, the drip irrigation unit includes a main water supply pipe, several sets of drip irrigation devices installed on the main water supply pipe, and a regulating valve is installed at the end of the main water supply pipe near the filter cartridge.

[0018] Preferably, the anti-clogging unit includes a clearing pipe, several sets of pressurizing chambers corresponding to the drip irrigation device on the clearing pipe, and a control valve located at the end of the clearing pipe near the secondary hydrocyclone; the secondary hydrocyclone is connected to the pressurizing chambers via the control valve, and the pressurizing chambers are connected to the drip irrigation device.

[0019] Preferably, the pressurization chamber is provided with a first pressurization diaphragm, a connecting rod connected to the first pressurization diaphragm, and a second pressurization diaphragm connected to the other end of the connecting rod. The second pressurization diaphragm is disposed in the main water supply pipe.

[0020] In the above scheme, the water discharged from the secondary hydrocyclone flows into the pressurization chamber in the unblocking pipe. The water flow is blocked by the first pressurization diaphragm. At this time, the water flow will squeeze the first pressurization diaphragm. The first pressurization diaphragm will drive the second pressurization diaphragm to move through the connector, and the second pressurization diaphragm will squeeze the water in the water pipe.

[0021] Compared with the prior art, the beneficial effects of the present invention are as follows: 1. In existing technologies, irrigation filtration devices typically restore filtration performance by backwashing after the filter media becomes clogged. This requires introducing and consuming a large amount of already filtered clarified water to backwash the filter media, affecting water output efficiency. This invention, by setting a sand-cleaning unit inside the filter cylinder, allows the suction pipe of the sand-cleaning unit to directly remove impurities adhering to the inner wall of the filter cylinder using negative pressure when the filter cylinder becomes clogged due to impurity accumulation. This restores the filtration performance of the filter cylinder, and the entire sand-cleaning process does not require the introduction and consumption of already filtered clarified water. This solves the problem of long filtration time required for drip irrigation in Northwest China due to the high sand and impurity content in the water source, and the problem of low water output caused by using clarified water for backwashing. It also reduces the problem of impurities easily accumulating and clogging the drip irrigation device due to low water output and flow rate.

[0022] 2. In existing technologies, fine particles such as silt and clay that are difficult to completely filter out from irrigation water enter the drip irrigation pipeline with the water flow. These particles tend to gradually deposit and clump in the narrow channels of the drip irrigation device, causing blockage. This invention uses an anti-blocking unit in conjunction with a sand-clearing unit. While the sand-clearing unit is clearing sand from the filter cartridge, the anti-blocking unit can pressurize and regulate the water flow in the main water supply pipe, increasing the flow velocity at the drip irrigation device. This creates a flushing water flow within the drip irrigation device's channels, thereby reducing the deposition and clumping of fine particles such as silt and clay at the drip irrigation device and preventing blockage and failure of the drip irrigation device. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the overall structure of the present invention in orthographic measurement. Figure 3 This is a cross-sectional view of the filter cartridge structure of the present invention; Figure 4 This is a cross-sectional view of the filter cylinder and sand-removing unit of the present invention; Figure 5 This is a cross-sectional view of the sand-clearing unit of the present invention; Figure 6 This is a schematic diagram of the anti-blocking unit of the present invention in the inactive state; Figure 7 This is a schematic diagram of the anti-blocking unit of the present invention in its start-up state.

[0024] In the diagram: 1. Primary hydrocyclone; 2. Filter cartridge; 21. Filter screen cartridge; 22. Water inlet area; 23. Purified water area; 24. Connection area; 25. Water inlet; 26. Water outlet; 27. Sewage outlet; 28. Lower end plate; 29. ​​Upper end plate; 3. Sand removal unit; 31. Water pipe; 32. Sewage suction pipe; 33. Blade; 34. Pressure plug; 35. Spring telescopic rod; 36. Opening; 4. Secondary hydrocyclone; 5. Drip irrigation unit; 51. Main water supply pipe; 52. Drip irrigator; 53. Regulating valve; 6. Anti-clogging unit; 61. Unclogging pipe; 62. Pressure boosting chamber; 63. Control valve; 64. First pressure boosting diaphragm; 65. Connecting rod; 66. Second pressure boosting diaphragm; 7. Drive motor. Detailed Implementation

[0025] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0026] Many specific details are set forth in the following description in order to provide a full understanding of the invention. However, the invention may also be practiced in other ways different from those described herein. Those skilled in the art can obtain other embodiments without departing from the spirit of the invention and without creative effort. Therefore, the invention is not limited to the specific embodiments disclosed below.

[0027] The present invention provides the following technical solution: a water-saving filtration irrigation water device, comprising a primary hydrocyclone 1, a filter cylinder 2, a sand-cleaning unit 3, a secondary hydrocyclone 4, a drip irrigation unit 5, an anti-clogging unit 6, and a drive motor 7; the filter cylinder 2 includes a filter screen cylinder 21, a water inlet area 22, a water purification area 23, a connecting area 24, a water inlet 25, a water outlet 26, a sewage outlet 27, a lower end plate 28, and an upper end plate 29; the sand-cleaning unit 3 includes a water pipe 31, a sewage suction pipe 32, a blade 33, a pressure plug 34, a spring telescopic rod 35, and an opening 36; the drip irrigation unit 5 includes a main water supply pipe 51, a drip irrigation device 52, and a regulating valve 53; the anti-clogging unit 6 includes a blockage-clearing pipe 61, a pressurizing chamber 62, a control valve 63, a first pressurizing diaphragm 64, a connecting rod 65, and a second pressurizing diaphragm 66.

[0028] As one embodiment of the present invention, refer to Figure 1 and Figure 2The water-saving filtration irrigation device includes a primary hydrocyclone 1, a filter cartridge 2, a sand-removing unit 3, a secondary hydrocyclone 4, a drip irrigation unit 5, and an anti-clogging unit 6. The primary hydrocyclone 1 is connected to the filter cartridge 2 via a pipe. The sand-removing unit 3 is installed inside the filter cartridge 2. The secondary hydrocyclone 4 is connected to the sand-removing unit 3 via a pipe. The secondary hydrocyclone 4 is also connected to the anti-clogging unit 6 via a pipe. The filter cartridge 2 is connected to the drip irrigation unit 5 via an outlet 26. The irrigation water source first undergoes hydrocyclone separation in the primary hydrocyclone 1, and the separated water enters the filter cartridge 2 for filtration. The filtered water is dispensed through the drip irrigation unit 5. When the filter cylinder 2 becomes clogged, the sand cleaning unit 3 is activated to clean the inner wall of the filter cylinder 21. The sand-containing water is drawn out and enters the secondary hydrocyclone 4 for concentration and separation. The supernatant separated by the secondary hydrocyclone 4 is sent to the anti-clogging unit 6 and pressurizes the drip irrigation unit 5 when the sand cleaning unit 3 is activated. Through the cooperation of the primary hydrocyclone 1, filter cylinder 2, sand cleaning unit 3, secondary hydrocyclone 4 and anti-clogging unit 6, the device can be self-cleaned without consuming external clarified water, and pressurizes the drip irrigation unit 5 to prevent clogging while cleaning sand.

[0029] As one embodiment of the present invention, refer to Figure 2 and Figure 3 The filter cartridge 2 includes a bottom water inlet area 22, a purified water area 23 connected to the outer wall of the filter screen cartridge 21, and a connecting area 24 located above the filter screen cartridge 21. A water inlet 25 is located on one side of the water inlet area 22, and a water outlet 26 is located on one side of the connecting area 24. A wastewater outlet 27 is located at the bottom of the filter cartridge 2. A lower end plate 28 is provided between the water inlet area 22 and the purified water area 23, separating them. An upper end plate 29 is provided between the purified water area 23 and the connecting area 24. End plate 29 separates the clean water zone 23 from the connection zone 24; the water separated by the primary hydrocyclone 1 is transmitted through the pipe to the inlet 25 of the filter cylinder 2 and enters the inlet zone 22. Then the water flows through the filter screen cylinder 21 and flows to the drip irrigation unit 5. The filter screen cylinder 21 intercepts and filters the fine sand impurities in the water. Under the separation effect of the lower end plate 28, only the water filtered by the filter screen cylinder 21 will flow to the clean water zone 23, and most of the intercepted impurities are discharged along the sewage outlet 27 at the bottom of the filter cylinder 2 under the sedimentation effect.

[0030] As one embodiment of the present invention, refer to Figure 3 , Figure 4 and Figure 5The sand cleaning unit 3 includes a water pipe 31 and several sets of suction pipes 32 evenly distributed on the side wall of the water pipe 31. The water pipe 31 is configured as a venturi tube and is located on the axis of the filter cylinder 21. The section of the water pipe 31 located in the filter cylinder 21 is configured as the throat of the venturi tube. When water enters the water pipe 31, the water flow is accelerated through the throat, which causes the suction pipe 32 connected to the throat of the water pipe 31 to generate negative pressure. When the inner wall of the filter cylinder 21 is adhered to or even blocked by impurities, the negative pressure generated by the suction pipe 32 draws the impurities on the inner wall of the filter cylinder 21 into the water pipe 31, thereby cleaning the filter cylinder 21.

[0031] As one embodiment of the present invention, refer to Figure 3 , Figure 4 and Figure 5 The sand cleaning unit 3 also includes blades 33 disposed in the connection area 24. The blades 33 are fixedly connected to the outer wall of the water pipe 31. The water pipe 31 is provided with several sets of openings 36 corresponding to the blades 33. When water flows out of the water pipe 31, the water flows through the openings 36 and impacts the blades 33, causing the water pipe 31 to rotate relative to the filter cylinder 2. When the water pipe 31 rotates, it drives several sets of suction pipes 32 on its side wall to perform circumferential sweeping of the inner wall of the filter cylinder 21, so that the suction pipes 32 have a more comprehensive adsorption coverage area on the inner wall of the filter cylinder 21, and reduce the blind spots of the suction pipes 32 in the cleaning process of the filter cylinder 21.

[0032] As one embodiment of the present invention, refer to Figure 3 , Figure 4 and Figure 5 The sand-clearing unit 3 also includes a pressure plug 34 installed inside the water pipe 31, and a spring telescopic rod 35 connected to the upper end of the pressure plug 34. The upper end of the spring telescopic rod 35 is fixedly connected to the water pipe 31. The water pipe 31 passes through the filter cylinder 2, and the top of the filter cylinder 2 is equipped with a drive motor 7 connected to the water pipe 31. When the filter cylinder 2 is filtering normally, the water in the inlet area 22 flows in and is filtered along the filter screen cylinder 21, and the pressure plug 34 blocks the water pipe 31. When the filter screen cylinder 21 is blocked... When the plug is closed, the water pressure in the inlet zone 22 increases, and the water pressure is greater than the sealing pressure of the pressure plug 34. The water flow preferentially enters along the water pipe 31. At this time, the pressure plug 34 is impacted by the water flow and drives the spring telescopic rod 35 to contract, thereby opening the flow of water in the water pipe 31 and starting the sand cleaning unit 3. The drive motor 7 is set on the top of the filter cylinder 2 and connected to the water pipe 31. It is used to drive the water pipe 31 to rotate, thereby driving the suction pipe 32 to sweep and clean the inner wall of the filter cylinder 21.

[0033] As one embodiment of the present invention, refer to Figure 1 , Figure 6 and Figure 7The drip irrigation unit 5 includes a water supply main pipe 51, several sets of drip irrigation devices 52 installed on the water supply main pipe 51, and a regulating valve 53 installed on the end of the water supply main pipe 51 near the filter cartridge 2. The filtered water enters the water supply main pipe 51 through the outlet 26 and is irrigated by the several sets of drip irrigation devices 52. The regulating valve 53 is used to regulate the inlet flow rate of the water supply main pipe 51.

[0034] As one embodiment of the present invention, refer to Figure 1 , Figure 6 and Figure 7 The anti-clogging unit 6 includes a clearing pipe 61, several sets of pressurizing chambers 62 corresponding to the drip irrigation device 52 and disposed on the clearing pipe 61, and a control valve 63 disposed at one end of the clearing pipe 61 near the secondary hydrocyclone 4; the secondary hydrocyclone 4 is connected to the pressurizing chambers 62 via the control valve 63, and the pressurizing chambers 62 are connected to the drip irrigation device 52; a first pressurizing diaphragm 64, a connecting rod 65 connected to the first pressurizing diaphragm 64, and a second pressurizing diaphragm 66 connected to the other end of the connecting rod 65 are disposed in the main water supply pipe. When the sand-clearing unit 3 is started, the control valve 63 opens, and the supernatant discharged from the secondary hydrocyclone 4 flows into the unblocking pipe 61 and enters each pressurizing chamber 62. The water flow is blocked and squeezed by the first pressurizing diaphragm 64. The first pressurizing diaphragm 64 drives the second pressurizing diaphragm 66 to move through the connecting rod 65. The second pressurizing diaphragm 66 squeezes the water flow in the water supply main pipe 51, which increases the pressure in the water supply main pipe 51 at the corresponding drip irrigation device 52, increases the flow rate of the water at the drip irrigation device 52, and flushes out the fine particles deposited in the flow channel of the drip irrigation device 52.

[0035] It should be noted that the primary hydrocyclone 1 is a hydrocyclone separator with a tangential inlet at the top and a conical shape at the bottom with a sand discharge port. Irrigation water enters tangentially and is separated by hydrocyclone separation. Larger sand particles slide down the wall under centrifugal force and are discharged through the sand discharge port. The supernatant enters the filter cartridge 2 through a pipe, thereby pre-treating the irrigation water, reducing larger impurities, and reducing the filtration load on the filter cartridge 2. The secondary hydrocyclone 4 and the lower sludge outlet 27 are equipped with underflow sludge discharge using existing technology. The sand-containing water drawn out by the sand-cleaning unit 3 enters the secondary hydrocyclone 4 tangentially through the pipeline for cyclone concentration. The concentrated mud is discharged through the bottom mud discharge port, and the separated supernatant enters the anti-clogging unit 6 through the pipeline from the overflow port. This ensures that the sand-containing water drawn out by the sand-cleaning unit is discharged in a small amount as concentrated mud, and the remaining supernatant is recycled for pressurizing and cleaning the anti-clogging unit 6. The supernatant flowing through the anti-clogging unit 6 can be connected to the water inlet area 22 and filtered again through the filter screen 21 to form a clarified liquid.

[0036] It should be noted that the first pressurizing diaphragm 64 is rotatably connected to the unblocking pipe 61 with the end near the secondary hydrocyclone 4 as the pivot point, and the second pressurizing diaphragm 66 is rotatably connected to the water supply main pipe 51 with the end near the control valve 63 as the pivot point.

[0037] Working principle: Irrigation water, after being pre-separated by the primary hydrocyclone 1 to remove larger sand particles, enters the filter cylinder 2. It then enters the inlet zone 22 through the inlet 25 and flows upwards through the filter screen cylinder 21. After filtration by the filter screen cylinder 21, it enters the clean water zone 23, passes through the connecting zone 24, and enters the main water supply pipe 51 of the drip irrigation unit 5 through the outlet 26, from which it is dispensed by each dripper 52. As filtration continues, impurities accumulate on the inner wall of the filter screen cylinder 21, increasing the filtration resistance and the water pressure in the inlet zone 22. When the water pressure exceeds the sealing pressure of the pressure plug 34, the pressure plug 34, under the pressure of the water flow, causes the spring telescopic rod 35 to contract, opening the water pipe 31. Water flows into the water pipe 31, and on one hand, the venturi throat accelerates the suction pipe 32, creating negative pressure and drawing impurities from the inner wall of the filter screen cylinder 21 into the suction pipe 31. Water pipe 31, on the other hand, impacts blade 33 through opening 36 of water pipe 31 and drives water pipe 31 to rotate in conjunction with drive motor 7, so that suction pipe 32 traverses the inner wall of filter cylinder 21, and the sand-containing water sucked out enters secondary hydrocyclone 4 for concentration and separation through water pipe 31 and sewage outlet 27; at the same time, control valve 63 is opened, and the supernatant separated by secondary hydrocyclone 4 enters each pressurization chamber 62 through unblocking pipe 61, and pressurizes the water flow in the main water supply pipe 51 through the first pressurization diaphragm 64, connecting rod 65, and second pressurization diaphragm 66, thereby reducing the flow radius at the bottom of drip irrigation device 52 in the main water supply pipe 51 and thus briefly pressurizing the water flow, increasing the flow velocity of the water at each drip irrigation device 52, flushing out the fine particles deposited and caking in the flow channel of drip irrigation device 52, and preventing the drip irrigation device 52 from clogging.

[0038] Specifically, refer to Figure 1 , Figure 2 , Figure 3 and Figure 4 During filtration, the pressure plug 34 seals the water pipe 31. Irrigation water is separated by the primary hydrocyclone 1 and enters the water inlet area 22 at the bottom of the filter cylinder 2 through the inlet 25. Under the separation of the lower end plate 28, it enters the filter screen cylinder 21 and is filtered by the filter screen cylinder 21 to intercept and filter fine sand impurities. The filtered water enters the clean water area 23, and after being collected by the connection area 24 above the upper end plate 29, it flows out through the outlet 26 into the drip irrigation unit 5. Most of the intercepted impurities are discharged along the sewage outlet 27 at the bottom of the filter cylinder 2 under the action of sedimentation.

[0039] Reference Figure 3 , Figure 4 and Figure 5When the inner wall of the filter cylinder 21 is clogged due to the accumulation of impurities, the water pressure in the inlet zone 22 increases. This water pressure exceeds the sealing pressure of the pressure plug 34, causing the pressure plug 34 to open due to the pressure of the water flow, which in turn causes the spring extension rod 35 to contract. Water in the inlet zone 22 preferentially enters through the water pipe 31. As the water flows through the water pipe 31 to the Venturi throat of the filter cylinder 21 section, it accelerates, creating negative pressure in the several sets of suction pipes 32 connected to the throat. Furthermore, due to the clogged filter cylinder 21, a relative negative pressure is also generated between it and the suction pipes 32. Subsequently, the impurities adhering to the filter cylinder 21 are removed. Impurities on the inner wall are sucked in through the suction pipe 32 and flow into the water pipe 31. At the same time, the water in the water pipe 31 flows through the opening 36 and impacts the blades 33 set in the connection area 24, causing the water pipe 31 to rotate relative to the filter cylinder 2. In conjunction with the drive motor 7 at the top of the filter cylinder 2, the water pipe 31 is driven to rotate, so that several sets of suction pipes 32 on the side wall of the water pipe 31 sweep the inner wall of the filter cylinder 21 in a circumferential manner, thereby reducing blind spots in cleaning and improving the cleaning effect on the inner wall of the filter cylinder 21. The sand-containing water sucked out is discharged through the outlet 27 at the bottom of the filter cylinder 2 along the water pipe 31.

[0040] Reference Figure 1 and Figure 2 The sand-containing water discharged from the sewage outlet 27 enters the secondary hydrocyclone 4 tangentially through the pipeline. In the secondary hydrocyclone 4, the water is concentrated by swirling. The denser sludge is concentrated at the bottom of the cone under centrifugal force and discharged through the bottom sludge discharge port. The supernatant after separation is discharged from the overflow port. Thus, the sand cleaning process only discharges a small amount of concentrated sludge, avoiding the direct discharge of a large amount of filtered clarified water. The separated supernatant enters the anti-clogging unit 6 through the pipeline for recycling.

[0041] Reference Figure 6 and Figure 7Simultaneously with the activation of the sand-clearing unit 3, the control valve 63 of the anti-clogging unit 6 opens. The supernatant separated by the secondary hydrocyclone 4 enters the anti-clogging pipe 61 through the control valve 63 and is distributed to several sets of pressurizing chambers 62 located on the anti-clogging pipe 61 and corresponding to each drip irrigation device 52. The first pressurizing diaphragm 64 in the pressurizing chamber 62 is squeezed by the supernatant and rotates with the section near the secondary hydrocyclone 4 as its axis. At the same time, it drives the second pressurizing diaphragm 66 located in the water supply main pipe 51 through the connecting rod 65. The second pressurizing diaphragm 66 rotates with the end near the regulating valve 53 as its axis, thereby squeezing the water in the water supply main pipe 51. The flow causes the pressure in the main water pipe 51 at the corresponding drip irrigation device 52 to rise instantaneously, increasing the flow velocity of the water at the drip irrigation device 52 and flushing out the fine particles deposited and hardened in the flow channel of the drip irrigation device 52. This achieves pressure cleaning and unblocking of each drip irrigation device 52 while cleaning sand. After the sand cleaning is completed and the filter screen cylinder 21 is unobstructed, the pressure in the water inlet area 22 drops, and the pressure plug 34 resets and seals the water pipe 31 under the action of the spring telescopic rod 35. The sand cleaning unit 3 and the anti-blocking unit 6 stop operating, and the device resumes normal filtration and irrigation. If necessary, the inlet flow rate of the main water pipe 51 can be adjusted through the regulating valve 53.

[0042] The above embodiments are only used to illustrate some examples of the implementable technical solutions of the present invention and are not intended to limit the implementation. The present invention can be understood in more detail by referring to the embodiments. Those skilled in the art should understand that the technical solutions of the present invention can be modified or equivalently replaced without departing from the scope of the technical solutions of the present invention, and all such modifications and substitutions should be covered within the scope of the claims of the present invention.

Claims

1. A water-saving filtration irrigation water device, characterized in that: The system includes a primary hydrocyclone (1), a filter cartridge (2), a sand-removing unit (3), a secondary hydrocyclone (4), a drip irrigation unit (5), and an anti-clogging unit (6). The primary hydrocyclone (1) is connected to the filter cartridge (2) via a pipe. The sand-removing unit (3) is located inside the filter cartridge (2). The secondary hydrocyclone (4) is connected to the sand-removing unit (3) via a pipe. The secondary hydrocyclone (4) is connected to the anti-clogging unit (6) via a pipe. The filter cartridge (2) is connected to the filter cartridge (2). The drip irrigation unit (5) is connected; a filter screen (21) is provided inside the filter cylinder (2); the sand cleaning unit (3) includes a water pipe (31) and several sets of suction pipes (32) evenly distributed on the side wall of the water pipe (31); when the filter cylinder (2) is blocked, the sand cleaning unit (3) removes impurities on the inner wall of the filter cylinder (2) through the suction pipes (32); the anti-blocking unit (6) pressurizes the water flow of the drip irrigation unit (5) when the sand cleaning unit (3) is started.

2. The water-saving filtration irrigation water device according to claim 1, characterized in that: The filter cylinder (2) includes a bottom water inlet area (22), a clean water area (23) connected to the outer wall of the filter cylinder (21), and a connecting area (24) disposed above the filter cylinder (21). A water inlet (25) is provided on one side of the water inlet area (22), a water outlet (26) is provided on one side of the connecting area (24), and a sewage outlet (27) is provided at the bottom of the filter cylinder (2). A lower end plate (28) is provided between the water inlet area (22) and the clean water area (23), and the lower end plate (28) separates the water inlet area (22) from the clean water area (23). An upper end plate (29) is provided between the clean water area (23) and the connecting area (24), and the upper end plate (29) separates the clean water area (23) from the connecting area (24).

3. The water-saving filtration irrigation water device according to claim 1, characterized in that: The water pipe (31) is configured as a venturi pipe and is located on the axis of the filter cylinder (21).

4. The water-saving filtration irrigation water device according to claim 2, characterized in that: The sand-clearing unit (3) also includes blades (33) disposed in the connection area (24), the blades (33) being fixedly connected to the outer wall of the water pipe (31); the water pipe (31) is provided with several sets of openings (36) corresponding to the blades (33).

5. The water-saving filtration irrigation water device according to claim 4, characterized in that: The sand-clearing unit (3) also includes a pressure plug (34) installed in the water pipe (31) and a spring telescopic rod (35) connected to the upper end of the pressure plug (34); the upper end of the spring telescopic rod (35) is fixedly connected to the water pipe (31); the water pipe (31) passes through the filter cylinder (2), and the top of the filter cylinder (2) is provided with a drive motor (7) connected to the water pipe (31).

6. The water-saving filtration irrigation water device according to claim 4 or 5, characterized in that: The drip irrigation unit (5) includes a water supply main pipe (51) and several sets of drip irrigation devices (52) installed on the water supply main pipe (51). A regulating valve (53) is provided at one end of the water supply main pipe (51) near the filter cylinder (2).

7. The water-saving filtration irrigation water device according to claim 6, characterized in that: The anti-clogging unit (6) includes a clearing pipe (61), several sets of pressurizing chambers (62) corresponding to the drip irrigation device (52) on the clearing pipe (61), and a control valve (63) located at one end of the clearing pipe (61) near the secondary hydrocyclone (4); the secondary hydrocyclone (4) is connected to the pressurizing chambers (62) via the control valve (63), and the pressurizing chambers (62) are connected to the drip irrigation device (52).

8. The water-saving filtration irrigation water device according to claim 7, characterized in that: The pressurizing chamber (62) is provided with a first pressurizing diaphragm (64), a connecting rod (65) connected to the first pressurizing diaphragm (64), and a second pressurizing diaphragm (66) connected to the other end of the connecting rod (65). The second pressurizing diaphragm (66) is disposed in the water supply main pipe (51).

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