Siphon pressure difference back-flushing net type filter structure applicable to ridge culture area

Abstract

The invention discloses a siphon pressure difference back-flushing net type filter structure applicable to a ridge culture area. The siphon pressure difference back-flushing net type filter structure comprises a centrifugal filtering mechanism, a water inlet, a spiral track, a coarse filtering mechanism, a U-shaped siphon, a pressure difference detection mechanism and a linear siphon, the centrifugal filtering mechanism comprises a water inlet, a spiral track, a conical pipe, a water conveying pipe, a water supply pipe, a connecting pipe, a dirt accumulation bin and a dirt outlet, one end of the water inlet is sleeved with the spiral track, the conical pipe is arranged at the tail end of the spiral track, the water conveying pipe is sleeved with the conical pipe, and the spiral track is wound around the outer surface of the water conveying pipe; a three-stage protection filtering system, an independent siphon pressure difference back-flushing unit and an intelligent self-cleaning centrifugal prefilter and double-layer net type filter series connection structure are designed, a three-stage protection system of centrifugal coarse separation, coarse net interception and fine net fine filtration is formed, the centrifugal prefilter can rapidly separate large-particle impurities by utilizing a cyclone separation technology, and the filter efficiency is improved. And the load pressure of a subsequent filter screen is effectively reduced.

Description

Technical Field

[0001] The invention relates to the technical field of mesh filters, in particular to a siphon pressure difference backwash mesh filter structure suitable for ridge farming areas. Background Art

[0002] The siphon pressure differential backwash screen filter is a precision filtration device designed specifically for ridge-cropped irrigation systems. It removes impurities from irrigation water to protect the system and ensure high-quality water for crops. It is primarily used in ridge-cropped agricultural irrigation systems, including drip irrigation, sprinkler irrigation, and other irrigation methods. Whether used in ridge-cropped fields for cash crops like vegetables, fruit trees, and flowers, or in ridge-cropped areas for field crops, this filter can ensure high-quality irrigation water.

[0003] The existing siphon pressure difference backwash type mesh filter has the following defects: First, the existing devices mostly use single-layer mesh filters, lack of large particle impurity pretreatment link, and cannot cope with the complex water quality in ridge farming areas. Large particles such as silt and straw debris in irrigation water directly impact the filter, causing it to clog for a short period of time. Once embedded in the filter pores, these large particles are difficult to remove, reducing filtration accuracy and accelerating mechanical damage, seriously impacting water supply stability during the critical crop growth period. Secondly, traditional filtration devices generally use a single backflushing system, which is unable to differentiate between different types of impurities. Faced with a compacted filter cake layer trapped by the coarse filter, it is unable to simultaneously address both the coarse and fine filtration structures, resulting in low single-pass cleaning efficiency. Furthermore, traditional backflushing methods lack precise control, wasting water resources and making thorough cleaning difficult, creating a vicious cycle of high cost and low efficiency. Thirdly, there is a widespread lack of real-time monitoring systems, relying on manual inspections to determine filter clogging, which exhibits significant lags. By the time filter clogging causes a drop in water pressure, damage to the irrigation system is often already occurring. For example, insufficient pressure in drip irrigation tapes can lead to uneven water flow, or localized high pressure can cause pipe ruptures. Furthermore, since filter life cannot be predicted, a crude approach of regular replacement is employed, significantly resulting in wasteful replacement of filters before their service life has expired. Summary of the Invention

[0004] The object of the present invention is to provide a siphon pressure difference backwash type screen filter structure suitable for ridge farming areas to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a siphon pressure difference backwash mesh filter structure suitable for ridge farming areas, comprising a centrifugal filter mechanism, wherein the centrifugal filter mechanism comprises a water inlet, a spiral track, a conical tube, a water pipe, a water supply pipe, a connecting pipe, a sewage storage bin and a sewage outlet, one end of the water inlet is sleeved with a spiral track, the tail end of the spiral track is provided with a conical tube, the water pipe is sleeved inside the conical tube, and the spiral track is coiled on the outer surface of the water pipe, the upper surface of the water pipe is fixedly connected to the water supply pipe, and one end of the water supply pipe is provided with a connecting pipe.

[0006] As a further technical solution of the present invention, a coarse filtration mechanism is provided at the output end of the centrifugal filtration mechanism, and the coarse filtration mechanism includes a coarse filtration tank, a water delivery port, a first sewage pipe, a first air suction pump, a first hose, a coarse filter cartridge, a first water pipe, a U-shaped siphon, a sewage suction port, a first hydraulic rotor, a first guide column, a first piston, a first cylinder and a first through hole, and the water delivery port is fixedly connected to the tail end of the connecting pipe.

[0007] As a further technical solution of the present invention, a water inlet and a first air suction pump are provided on an outer surface of one side of the coarse filter tank, a first sewage pipe is provided on the outer wall of one end of the coarse filter tank, the output end of the first air suction pump is sleeved with a first hose, the end of the first hose is connected to one end of the coarse filter tank, a first cylinder is provided at the coarse filter tank corresponding to the first hose, and the first hose is sleeved on the first cylinder, and a first through hole is opened on the outer surface of one side of the coarse filter tank.

[0008] As a further technical solution of the present invention, a first piston is provided in the first cylinder, a first guide column is provided on the outer surface of one side of the first piston, one end of the first guide column is fixedly connected to the first hydraulic rotor, a U-shaped siphon tube is sleeved in the first hydraulic rotor, sewage suction ports are provided on the inner sides of both end sections of the U-shaped siphon tube, and a coarse filter cartridge is provided between the two end sections of the U-shaped siphon tube, and a first water pipe is sleeved on the outer surface of one end of the coarse filter cartridge.

[0009] As a further technical solution of the present invention, a fine filtering mechanism is provided at the output end of the coarse filtering mechanism, and the fine filtering mechanism includes a fine filtering tank, a water outlet, a second sewage pipe, a second air suction pump, a second hose, a fine filter cartridge, a second water pipe, a linear siphon, a sewage suction pipe, a second hydraulic rotor, a second guide column, a second piston, a second cylinder and a second through hole, and the second water pipe is fixedly connected to the outer surface of one end of the first water pipe.

[0010] As a further technical solution of the present invention, a second water pipe and a second cylinder are respectively provided at both ends of the fine filter tank, a second hose is sleeved on the outer surface of one end of the second cylinder, a water outlet and a second air suction pump are provided on the outer surface of one side of the fine filter tank, a second sewage pipe is provided on the outer surface of the other side of the fine filter tank, and one end of the second hose is fixedly connected to the output end of the second air suction pump.

[0011] As a further technical solution of the present invention, a second piston is provided in the second cylinder, a second guide column is provided on the outer surface of one side of the second piston, one end of the second guide column is fixedly connected to the second hydraulic rotor, a linear siphon tube is sleeved in the second hydraulic rotor, sewage suction pipes are evenly provided on the outer wall of the linear siphon tube, the linear siphon tube is sleeved in the fine filter cartridge, and a second water pipe is provided at one end of the fine filter cartridge.

[0012] As a further technical solution of the present invention, a pressure differential detection mechanism is fixedly connected to the coarse filtration mechanism, and the pressure differential detection mechanism includes a pressure differential sensor, a first detection tube, a first probe, a second detection tube and a second probe. The pressure differential sensor is fixedly connected to the outer wall of one end of the coarse filtration tank, and the first probe is sleeved in the first through hole.

[0013] As a further technical solution of the present invention, a first detection tube and a second detection tube are respectively provided at both ends of the differential pressure sensor, and a first probe is provided at the end of the first detection tube, and a second probe is provided at one end of the second detection tube.

[0014] As a further technical solution of the present invention, a second through hole is opened on an upper surface of one side of the fine filter tank, and a second probe is sleeved in the second through hole.

[0015] Compared with the prior art, the beneficial effects of the present invention are as follows: the present invention is designed with a three-stage protection filtration system, an independent siphon pressure difference recoil unit and intelligent self-cleaning, a centrifugal pre-filter and a double-layer mesh filter in series structure, forming a three-stage protection system of centrifugal coarse separation, coarse mesh interception and fine mesh fine filtration, the centrifugal pre-filter uses cyclone separation technology to quickly separate large particle impurities, effectively reducing the load pressure of subsequent filter screens, and the double-layer mesh filter adopts an independent chamber design, the coarse filtration mechanism gives priority to intercepting large-volume impurities such as sand and gravel, and the fine filtration mechanism is responsible for intercepting tiny suspended matter to prevent large particles from embedding in the pores of the fine filter screen, and the centrifugal pretreatment device is powerful and effective To alleviate the problem of large particles clogging pipes and equipment wear, break through the limitations of the traditional filter shared backflushing system, and configure independent siphon pressure difference backflushing units for the coarse and fine filter mechanisms according to the different characteristics of impurities attached to the coarse and fine filter mechanisms. Intelligent pressure difference monitoring realizes precise operation and maintenance and risk prevention and control. Pressure difference sensors are respectively deployed at the inlet and outlet of the coarse and fine filter devices to monitor pressure changes in real time with high precision. When the pressure difference of the coarse filter mechanism exceeds the specified threshold, the system immediately starts the coarse filter backflushing program, and when the pressure difference of the fine filter mechanism reaches a certain threshold, it triggers the cleaning of the fine filter. Accurate monitoring ensures that the degree of filter blockage is always within the controllable range to maintain stable system operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0017] Figure 2 Schematic diagram of the three-dimensional structure of the centrifugal filtration mechanism of the present invention;

[0018] Figure 3 It is a schematic diagram of the three-dimensional structure of the coarse filtering mechanism of the present invention;

[0019] Figure 4 Schematic diagram of the internal three-dimensional structure of the coarse filtering mechanism of the present invention;

[0020] Figure 5 Schematic diagram of the three-dimensional structure of the pressure difference detection mechanism of the present invention;

[0021] Figure 6 Schematic diagram of the three-dimensional structure of the fine filtering mechanism of the present invention;

[0022] Figure 7 Schematic diagram of the internal three-dimensional structure of the fine filtering mechanism of the present invention;

[0023] Figure 8 It is a schematic diagram of the three-dimensional structure of the siphon structure of the present invention.

[0024] In the figure: 1. Centrifugal filtration mechanism; 11. Water inlet; 12. Spiral track; 13. Conical tube; 14. Water delivery pipe; 15. Water supply pipe; 16. Connecting pipe; 17. Sewage storage bin; 18. Sewage outlet; 2. Coarse filtration mechanism; 21. Coarse filtration tank; 22. Water delivery port; 23. First sewage outlet pipe; 24. First suction pump; 25. First hose; 26. Coarse filter cartridge; 27. First water pipe; 28. U-shaped siphon; 29. ​​Sewage outlet; 210. First hydraulic rotor; 211. First guide post; 212. First piston; 213. First cylinder; 214. First through hole; 3. Pressure difference detection mechanism; 31. Pressure difference sensor; 32. First detection tube; 33. First probe; 34. Second detection tube; 35. Second probe; 4. Fine filtration mechanism; 41. Fine filtration tank; 42. Water outlet; 43. Second sewage pipe; 44. Second suction pump; 45. Second hose; 46. Fine filter cartridge; 47. Second water pipe; 48. Linear siphon; 49. Sewage suction pipe; 410. Second hydraulic rotor; 411. Second guide column; 412. Second piston; 413. Second cylinder; 414. Second through hole. DETAILED DESCRIPTION

[0025] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0026] Please see the attached Figure 1 -Attached Figure 8, an embodiment provided by the present invention: a siphon pressure difference backwash type mesh filter structure suitable for ridge farming area, comprising a centrifugal filter mechanism 1, the centrifugal filter mechanism 1 comprising a water inlet 11, a spiral track 12, a tapered tube 13, a water pipe 14, a water supply pipe 15, a connecting pipe 16, a sewage storage bin 17 and a sewage outlet 18, one end of the water inlet 11 is sleeved with the spiral track 12, the tail end of the spiral track 12 is provided with a tapered tube 13, the water pipe 14 is sleeved inside the tapered tube 13, and the spiral track 12 is spiraled on the outer surface of the water pipe 14, the upper surface of the water pipe 14 is fixedly connected with the water supply pipe 15, and one end of the water supply pipe 15 is provided with a connecting pipe 16; the output end of the centrifugal filter mechanism 1 is provided with a coarse filtering mechanism 2, the coarse filtering mechanism 2 includes The coarse filter tank 21 includes a water delivery port 22, a first sewage discharge pipe 23, a first air suction pump 24, a first hose 25, a coarse filter cartridge 26, a first water pipe 27, a U-shaped siphon 28, a sewage suction port 29, a first hydraulic rotor 210, a first guide column 211, a first piston 212, a first cylinder 213 and a first through hole 214. The water delivery port 22 is fixedly connected to the tail end of the connecting pipe 16. The centrifugal filter mechanism 1 uses cyclone separation technology to quickly separate large particles of impurities, thereby greatly improving the removal efficiency. The water delivery port 22 and the first air suction pump 24 are provided on the outer surface of one side of the coarse filter tank 21. The first sewage discharge pipe 23 is provided on the outer wall of one end of the coarse filter tank 21. The output end of the first air suction pump 24 is sleeved with a first hose 25. , the end of the first hose 25 is connected to one end of the coarse filter tank 21, and the coarse filter tank 21 is provided with a first cylinder 213 corresponding to the first hose 25, and the first hose 25 is sleeved on the first cylinder 213, and a first through hole 214 is opened on the outer surface of one side of the coarse filter tank 21. The centrifugal filter mechanism 1 and the coarse filter mechanism 2 are in series structure, which reduces the damage rate of the equipment; a first piston 212 is provided in the first cylinder 213, and a first guide column 211 is provided on the outer surface of one side of the first piston 212. One end of the first guide column 211 is fixedly connected to the first hydraulic rotor 210, and a U-shaped siphon tube 28 is sleeved in the first hydraulic rotor 210. The inner sides of the two end pipe sections of the U-shaped siphon tube 28 are provided with sewage suction ports 29, and the U-shaped siphon tube A coarse filter cartridge 26 is provided between the two end pipe sections of 28. A first water pipe 27 is sleeved on the outer surface of one end of the coarse filter cartridge 26, and the internal structure forms an independent siphon pressure difference recoil unit; a fine filter mechanism 4 is provided at the output end of the coarse filter mechanism 2. The fine filter mechanism 4 includes a fine filter tank 41, a water outlet 42, a second sewage pipe 43, a second suction pump 44, a second hose 45, a fine filter cartridge 46, a second water pipe 47, a linear siphon pipe 48, a sewage suction pipe 49, a second hydraulic rotor 410, a second guide column 411, a second piston 412, a second cylinder 413 and a second through hole 414. The second water pipe 47 is fixedly connected to the outer surface of one end of the first water pipe 27. The fine filter mechanism 4 focuses on removing fine particles and sticky substances.A second water pipe 47 and a second cylinder 413 are respectively provided at both ends of the fine filter tank 41, a second hose 45 is sleeved on the outer surface of one end of the second cylinder 413, a water outlet 42 and a second air suction pump 44 are provided on the outer surface of one side of the fine filter tank 41, a second sewage pipe 43 is provided on the outer surface of the other side of the fine filter tank 41, and one end of the second hose 45 is fixedly connected to the output end of the second air suction pump 44, a second piston 412 is provided in the second cylinder 413, a second guide column 411 is provided on the outer surface of one side of the second piston 412, one end of the second guide column 411 is fixedly connected to the second hydraulic rotor 410, and the second air suction pump 44 drives the second piston 412 to move linearly; a linear siphon pipe 48 is sleeved in the second hydraulic rotor 410, and sewage suction pipes 49 are evenly provided on the outer wall of the linear siphon pipe 48, the linear siphon pipe 48 is sleeved in the fine filter cartridge 46, and a second water pipe 47 is provided at one end of the fine filter cartridge 46. Backwash water carries impurities to the second sewage pipe 43. A pressure differential detection mechanism 3 is fixedly connected to the coarse filter mechanism 2. The pressure differential detection mechanism 3 includes a pressure differential sensor 31, a first detection tube 32, a first probe 33, a second detection tube 34, and a second probe 35. The pressure differential sensor 31 is fixedly connected to the outer wall of one end of the coarse filter tank 21, and the first probe 33 is sleeved into the first through hole 214. The first probe 33 monitors the pressure differential within the coarse filter mechanism 2. The pressure differential sensor 31 is provided with a first detection tube 32 and a second detection tube 34 at each end. The first probe 33 is provided at the end of the first detection tube 32, and a second probe 35 is provided at one end of the second detection tube 34. The second probe 35 monitors the pressure differential within the fine filter mechanism 4. A second through hole 414 is formed on one upper surface of the fine filter tank 41, and the second probe 35 is sleeved into the second through hole 414. The pressure differential sensor 31 determines the accumulation of impurities within the filter by detecting the pressure differential.

[0027] Working principle: The coarse filtering mechanism 2 is fixedly connected to the bottom of the centrifugal filtering mechanism 1. The centrifugal filtering mechanism 1 consists of a water inlet 11, a spiral track 12, a tapered tube 13, a water pipe 14, a water supply pipe 15, a connecting pipe 16, a sewage storage bin 17 and a sewage outlet 18. The coarse filtering mechanism 2 consists of a coarse filtering tank 21, a water outlet 22, a first sewage outlet 23, a first air suction pump 24, a first hose 25, a coarse filtering cartridge 26, a first water pipe 27, a U-shaped siphon 28, a sewage suction port 29, a first hydraulic rotor 210, a first guide column 211, a first piston 212, a first cylinder 213 and a first through hole 214. The outer surface of one side of the coarse filtering tank 21 is provided with a water outlet 22 and a first air suction pump 24. The outer wall of one end of the coarse filtering tank 21 A first sewage pipe 23 is provided on the top, and a first hose 25 is sleeved on the output end of the first suction pump 24. The end of the first hose 25 is connected to one end of the coarse filter tank 21. A first cylinder 213 is provided at the coarse filter tank 21 corresponding to the first hose 25, and the first hose 25 is sleeved on the first cylinder 213. A first through hole 214 is provided on the outer surface of one side of the coarse filter tank 21, and a first piston 212 is provided in the first cylinder 213. A first guide column 211 is provided on the outer surface of one side of the first piston 212. One end of the first guide column 211 is fixedly connected to the first hydraulic rotor 210. A U-shaped siphon pipe 28 is sleeved in the first hydraulic rotor 210. The inner sides of the two end pipe sections of the U-shaped siphon pipe 28 are provided with sewage suction ports 29, and the U-shaped siphon pipe 28 has a plurality of pipe sections. A coarse filter cartridge 26 is provided between the two end sections of the suction pipe 28, and a first water pipe 27 is sleeved on the outer surface of one end of the coarse filter cartridge 26. Then the fine filter mechanism 4 is fixedly connected to the output end of the coarse filter mechanism 2, and the fine filter mechanism 4 is composed of a fine filter tank 41, a water outlet 42, a second sewage pipe 43, a second suction pump 44, a second hose 45, a fine filter cartridge 46, a second water pipe 47, a linear siphon 48, a sewage suction pipe 49, a second hydraulic rotor 410, a second guide column 411, a second piston 412, a second cylinder 413 and a second through hole 414. A pressure difference detection mechanism 3 is fixedly connected to the coarse filter mechanism 2, and the pressure difference detection mechanism 3 is composed of a pressure difference sensor 31, a first detection tube 32, a first probe 33, a second detection tube 34 and a second probe 35. The first probe 33 provided at the end of the first detection tube 32 is sleeved in the first through hole 214, and the second probe 35 provided at one end of the second detection tube 34 is sleeved in the second through hole 414. This filter operates based on the integrated principle of filtration, monitoring, and self-cleaning. In the initial stage, the irrigation water passes through the centrifugal filtration mechanism 1 to separate large particles of impurities, and then passes through the coarse filtration mechanism 2 and the fine filtration mechanism 4 for graded filtration. During operation, the pressure difference detection mechanism 3 monitors the pressure changes of the coarse and fine mechanisms in real time. When the pressure difference exceeds the set threshold, the siphon device is triggered to start, and the negative pressure is used to generate reverse water flow to carry out targeted flushing of the coarse and fine mechanisms respectively, peel off and discharge impurities, and realize automatic cleaning of the filter.

[0028] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the invention can be embodied in other specific forms without departing from the spirit or essential characteristics of the invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the invention is defined by the appended claims, not the foregoing description, and all variations within the meaning and range of equivalents of the claims are intended to be included therein. Any reference sign in a claim should not be construed as limiting the claim to which it relates.

Claims

1. A siphon pressure differential backwash type screen filter structure suitable for ridge cultivation areas, comprising a centrifugal filter mechanism (1), characterized in that: The centrifugal filtering mechanism (1) comprises a water inlet (11), a spiral track (12), a tapered tube (13), a water pipe (14), a water supply pipe (15), a connecting tube (16), a sewage storage bin (17) and a sewage outlet (18); one end of the water inlet (11) is sleeved with the spiral track (12); the tail end of the spiral track (12) is provided with the tapered tube (13); the water pipe (14) is sleeved inside the tapered tube (13); the spiral track (12) is spiraled on the outer surface of the water pipe (14); the upper surface of the water pipe (14) is fixedly connected with the water supply pipe (15); and one end of the water supply pipe (15) is provided with the connecting tube (16).

2. The siphon pressure differential backwash type screen filter structure suitable for ridge cultivation area according to claim 1, characterized in that: The output end of the centrifugal filtering mechanism (1) is provided with a coarse filtering mechanism (2), the coarse filtering mechanism (2) comprising a coarse filtering tank (21), a water delivery port (22), a first sewage discharge pipe (23), a first air suction pump (24), a first hose (25), a coarse filtering cartridge (26), a first water pipe (27), a U-shaped siphon (28), a sewage suction port (29), a first hydraulic rotor (210), a first guide column (211), a first piston (212), a first cylinder (213) and a first through hole (214), and the water delivery port (22) is fixedly connected to the tail end of the connecting pipe (16).

3. The siphon pressure differential backwash type screen filter structure suitable for ridge cultivation area according to claim 2, characterized in that: A water delivery port (22) and a first air suction pump (24) are provided on an outer surface of one side of the coarse filter tank (21); a first sewage discharge pipe (23) is provided on an outer wall of one end of the coarse filter tank (21); a first hose (25) is sleeved on the output end of the first air suction pump (24); the end of the first hose (25) is connected to one end of the coarse filter tank (21); a first cylinder (213) is provided on the coarse filter tank (21) at a position corresponding to the first hose (25), and the first hose (25) is sleeved on the first cylinder (213); and a first through hole (214) is opened on an outer surface of one side of the coarse filter tank (21).

4. The siphon pressure differential backwash type screen filter structure suitable for ridge cultivation area according to claim 2, characterized in that: A first piston (212) is provided in the first cylinder (213), a first guide column (211) is provided on the outer surface of one side of the first piston (212), one end of the first guide column (211) is fixedly connected to the first hydraulic rotor (210), a U-shaped siphon tube (28) is sleeved in the first hydraulic rotor (210), sewage suction ports (29) are provided on the inner sides of both end sections of the U-shaped siphon tube (28), a coarse filter cartridge (26) is provided between the two end sections of the U-shaped siphon tube (28), and a first water pipe (27) is sleeved in the outer surface of one end of the coarse filter cartridge (26).

5. The siphon pressure differential backwash type screen filter structure suitable for ridge cultivation area according to claim 2, characterized in that: The output end of the coarse filtering mechanism (2) is provided with a fine filtering mechanism (4), the fine filtering mechanism (4) comprising a fine filtering tank (41), a water outlet (42), a second sewage discharge pipe (43), a second air suction pump (44), a second hose (45), a fine filter cartridge (46), a second water pipe (47), a linear siphon (48), a sewage suction pipe (49), a second hydraulic rotor (410), a second guide column (411), a second piston (412), a second cylinder (413) and a second through hole (414), and the second water pipe (47) is fixedly connected to the outer surface of one end of the first water pipe (27).

6. The siphon pressure differential backwash type screen filter structure suitable for ridge cultivation areas according to claim 5, characterized in that: The two ends of the fine filter tank (41) are respectively provided with a second water pipe (47) and a second cylinder (413); a second hose (45) is sleeved on the outer surface of one end of the second cylinder (413); a water outlet (42) and a second air suction pump (44) are provided on the outer surface of one side of the fine filter tank (41); a second sewage pipe (43) is provided on the outer surface of the other side of the fine filter tank (41); and one end of the second hose (45) is fixedly connected to the output end of the second air suction pump (44).

7. The siphon pressure differential backwash type screen filter structure suitable for ridge cultivation areas according to claim 5, characterized in that: A second piston (412) is provided in the second cylinder (413), a second guide column (411) is provided on the outer surface of one side of the second piston (412), one end of the second guide column (411) is fixedly connected to the second hydraulic rotor (410), a linear siphon tube (48) is sleeved in the second hydraulic rotor (410), a sewage suction tube (49) is evenly provided on the outer wall of the linear siphon tube (48), the linear siphon tube (48) is sleeved in the fine filter cartridge (46), and a second water pipe (47) is provided at one end of the fine filter cartridge (46).

8. The siphon pressure differential backwash type screen filter structure suitable for ridge cultivation areas according to claim 2, characterized in that: A pressure differential detection mechanism (3) is fixedly connected to the coarse filtering mechanism (2), and the pressure differential detection mechanism (3) comprises a pressure differential sensor (31), a first detection tube (32), a first probe (33), a second detection tube (34), and a second probe (35). The pressure differential sensor (31) is fixedly connected to the outer wall of one end of the coarse filtering tank (21), and the first probe (33) is sleeved in the first through hole (214).

9. The siphon pressure differential backwash type screen filter structure suitable for ridge cultivation areas according to claim 8, characterized in that: A first detection tube (32) and a second detection tube (34) are respectively provided at both ends of the differential pressure sensor (31), a first probe (33) is provided at the end of the first detection tube (32), and a second probe (35) is provided at one end of the second detection tube (34).

10. The siphon pressure differential backwash type screen filter structure suitable for ridge cultivation areas according to claim 6, characterized in that: A second through hole (414) is provided on one upper surface of the fine filter tank (41), and a second probe (35) is sleeved in the second through hole (414).

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