An apparatus for treating suspended matter in irrigation water

Abstract

The application relates to an irrigation water suspended matter treatment device which comprises a frame body, a filter frame and a first partition plate, the frame body comprises a bottom plate and two side plates, the two side plates are a first side plate and a second side plate respectively, the first side plate and the second side plate are arranged oppositely left and right for respectively abutting with the inner walls of two sides of a ditch, the bottom plate and the first partition plate are arranged in a spaced mode up and down between the first side plate and the second side plate, and the first partition plate is located above the bottom plate, the first side plate, the second side plate, the bottom plate and the first partition plate form a sand flow channel by being enclosed, the filter frame is installed on the first partition plate and located above the sand flow channel, and the first partition plate is provided with a sand discharging hole at the filter frame.

Description

Technical Field

[0001] This invention relates to the field of irrigation water treatment, and in particular to an irrigation water suspended solids treatment device. Background Technology

[0002] During irrigation, existing technology mainly involves setting up several filter screens in the ditches to filter suspended solids, trapping sand and other suspended particles on the screens. However, if the suspended solids are not removed in a timely manner, they will be stirred back into the irrigation water during subsequent water flow and flow into the fields from the side walls of the ditches. Summary of the Invention

[0003] Therefore, it is necessary to provide a device for treating suspended solids in irrigation water to address the problem of untimely removal of suspended solids.

[0004] An irrigation water suspended solids treatment device includes a frame, a filter frame, and a first partition. The frame includes a bottom plate and two side plates, which are a first side plate and a second side plate, respectively. The first side plate and the second side plate are arranged opposite each other to fit against the inner walls of the two sides of the ditch. The bottom plate and the first partition are spaced apart vertically between the first side plate and the second side plate, with the first partition located above the bottom plate. The first side plate, the second side plate, the bottom plate, and the first partition form a sand-carrying channel. The filter frame is installed on the first partition and located above the sand-carrying channel. The first partition has sand discharge holes at the filter frame.

[0005] The irrigation water suspended solids treatment device of the present invention further includes a second partition plate, which is disposed between the first side plate and the second side plate and located above the first partition plate. The first side plate, the second side plate, the first partition plate and the second partition plate enclose each other to form an irrigation channel. The filter frame is located inside the irrigation channel. The side plate has a main irrigation port at the irrigation channel. The second partition plate, the first side plate and the second side plate enclose each other above the irrigation channel to form a drainage channel.

[0006] The side plate of the present invention is also provided with an auxiliary irrigation port, which is located above the main irrigation port. The edge of the second partition extends upward to form a shielding plate. The second partition is movably arranged in a direction perpendicular to the first partition so that the shielding plate partially or completely blocks the auxiliary irrigation port.

[0007] The first and second side plates of the present invention have a disassembly port between their top edges for the second partition to move.

[0008] The first side plate of the present invention is provided with a guide rail for moving and guiding the second partition plate on the side facing the second side plate. The guide rail includes two guide plates spaced apart, and a positioning groove is formed between the two guide plates. Part of the edge of the filter frame is located in the positioning groove.

[0009] The second partition of the present invention has a guide notch on its edge, and a guide rail passes through the guide notch. The second partition has a free state and a locked state. When the second partition is in the free state, the second partition is parallel to the first partition and there is a gap between at least one guide plate and the edge of the guide notch. When the second partition is in the locked state, the second partition is inclined relative to the first partition and both guide plates are in close contact with the edge of the guide notch.

[0010] In this invention, the first partition is movable in its normal direction, and the second partition is supported on the filter frame.

[0011] The filter frame of the present invention is equipped with a biological rope, and the two ends of the irrigation channel are the inlet and the outlet, respectively. The sand discharge hole is located on the side of the filter frame near the outlet.

[0012] The sand-carrying channel of the present invention is provided with an anti-backflow plate. The anti-backflow plate is inclined relative to the first partition plate. The top edge of the anti-backflow plate is fixed to the edge of the sand discharge hole away from the water outlet, and the bottom edge of the anti-backflow plate is located on the side of the top edge closer to the water outlet.

[0013] The anti-backflow plate of the present invention has a gap between its bottom edge and the base plate.

[0014] The beneficial effects of this invention are as follows:

[0015] After the water flows into the irrigation channel, it is filtered by the filter media. Each time the water passes through the filter frame, some heavy metal ions are adsorbed, and some sand particles are blocked, thus filtering the irrigation water. The side walls of the ditch have openings connecting to the fields, through which the filtered irrigation water flows into the fields for irrigation. Sand particles blocked at the filter media generally fall along the surface of the filter media under gravity to the sand discharge holes, entering the sand-carrying channel. Simultaneously, some irrigation water also enters the sand-carrying channel through the sand discharge holes, flushing the sand particles in the sand-carrying channel to the ditch's drain outlet, preventing sand particles from accumulating and clogging the channel. This allows the irrigation water suspended solids treatment device to operate for a long time, reducing its maintenance frequency. Due to the obstruction of the first and second side plates, sand particles in the sand-carrying channel will not enter the farmland through the openings in the ditch side walls. After the irrigation water suspended solids treatment device is removed from the ditch, the filtered sand particles are prevented from remaining in the ditch, eliminating the need for secondary cleaning. As can be seen, this embodiment achieves the separation between filtered irrigation water and filtered sand particles through the first partition. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural diagram of the irrigation water suspended solids treatment device according to an embodiment of the present invention. Figure 1 ;

[0017] Figure 2This is a three-dimensional structural diagram of the irrigation water suspended solids treatment device according to an embodiment of the present invention. Figure 2 ;

[0018] Figure 3 This is a three-dimensional structural diagram of the irrigation water suspended solids treatment device according to an embodiment of the present invention. Figure 3 ;

[0019] Figure 4 This is a three-dimensional structural diagram of the irrigation water suspended solids treatment device according to an embodiment of the present invention. Figure 4 ;

[0020] Figure 5 This is a three-dimensional structural diagram of the irrigation water suspended solids treatment device according to an embodiment of the present invention (the second side plate is hidden). Detailed Implementation

[0021] To make the above-mentioned objects, features, and advantages of the present invention more apparent and understandable, specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of the present invention. However, the present invention can be practiced in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0022] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0023] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0024] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0025] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "over," and "on top" of the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0026] It should be noted that when an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. When an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0027] See Figure 1-5 This embodiment provides an irrigation water suspended solids treatment device, which mainly filters suspended particulate matter (mainly sand particles) and some heavy metal ions in irrigation water.

[0028] Specifically, the irrigation water suspended solids treatment device includes a frame 1, a filter frame 4, a second partition 3 and a first partition 2. The frame 1 includes a base plate 13 and two side plates, namely a first side plate 11 and a second side plate 12.

[0029] The first side plate 11 and the second side plate 12 are parallel to each other and opposite to each other. There is a certain gap between the first side plate 11 and the second side plate 12. This gap matches the width of the irrigation ditch for the field so that the first side plate 11 and the second side plate 12 can fit against the inner walls of the left and right sides of the ditch after entering the ditch, so as to ensure that all the water flow in the ditch is located between the first side plate 11 and the second side plate 12 as much as possible.

[0030] The base plate 13 is horizontally positioned between the first side plate 11 and the second side plate 12, and the left and right edges of the base plate 13 are welded and fixed to the bottom edges of the first side plate 11 and the second side plate 12, respectively. On the one hand, the base plate 13 needs to fit against the bottom wall of the ditch to block the water flow and the bottom wall of the ditch. On the other hand, it connects the first side plate 11 and the second side plate 12, so that the frame 1 can be assembled as a whole in the ditch.

[0031] The first partition 2 and the second partition 3 are both parallel to the base plate 13. The base plate 13, the first partition 2, and the second partition 3 are arranged sequentially from bottom to top between the first side plate 11 and the second side plate 12. The first partition 2 and the second partition 3 are assembled in a non-welding manner, and can be disassembled and positioned between the first side plate 11 and the second side plate 12. In addition, the two side edges of the first partition 2 and the second partition 3 are also made as close as possible to the first partition 2 and the second partition 3, so as to separate the first side plate 11 and the second side plate 12. For example, when the first side plate 11 and the second side plate 12 move closer to each other due to thermal deformation, the first partition 2 and the second partition 3 can reduce the deformation of the first side plate 11 and the second side plate 12 to a certain extent, thereby making the first side plate 11 and the second side plate 12 fit against the inner wall of the ditch as much as possible, so that the water flow entering the ditch is located between the first side plate 11 and the second side plate 12 as much as possible, reducing the water flow between the inner wall of the ditch and its adjacent side plates.

[0032] The first side plate 11, the second side plate 12, the bottom plate 13, and the first partition 2 form a sand-carrying channel 1A, while the first side plate 11, the second side plate 12, the first partition 2, and the second partition 3 form an irrigation channel 1B. The two ends of the ditch are an inlet and an outlet, respectively. There is a height difference between the inlet and the bottom wall of the ditch, so the water flowing from the inlet will directly flow into the irrigation channel 1B and not into the sand-carrying channel 1A. If the water level at the inlet is high, some water will also flow above the second partition 3.

[0033] A filter frame 4 is mounted on the first partition 2 and located within the irrigation channel 1B. Multiple filter frames 4 are arranged sequentially at intervals along the axial direction of the channel. The bottom edge of each filter frame 4 is welded and fixed to the upper surface of the first partition 2. Filter media is detachably installed within each filter frame 4. The first partition 2 has sand discharge holes 21 at the locations of the filter frames 4. A main irrigation inlet 1B1 is partially formed in the first side plate 11 and / or the second side plate 12 within the irrigation channel 1B.

[0034] After the water flows into the irrigation channel 1B from the inlet, it is filtered by the filter media. Each time the water flows through the filter frame 4, some heavy metal ions are adsorbed, and some sand particles are blocked, thus filtering the irrigation water. The side wall of the ditch has a gap connecting to the field, through which the filtered irrigation water flows into the field for irrigation. The sand particles blocked at the filter media fall off the surface of the filter media under the action of gravity to the sand discharge hole 21, and then enter the sand-carrying channel 1A through the sand discharge hole 21. At the same time, some irrigation water also enters the sand-carrying channel 1A through the sand discharge hole 21, flushing the sand particles in the sand-carrying channel 1A to the drainage outlet of the ditch, so as to prevent sand particles from accumulating and clogging in the sand-carrying channel 1A, allowing the irrigation water suspended solids treatment device to work for a long time and reducing its maintenance frequency. Due to the obstruction of the first side plate 11 and the second side plate 12, the sand particles in the sand-carrying channel 1A will not enter the farmland through the gap in the side wall of the ditch. After the irrigation water suspended solids treatment device is removed from the ditch, the filtered sand particles are prevented from remaining in the ditch, eliminating the need for secondary cleaning. Therefore, this embodiment achieves separation between the filtered irrigation water and the filtered sand particles through the first baffle 2.

[0035] The irrigation channel 1B has an inlet 1B3 and an outlet 1B4 at its two ends. Preferably, a backflow prevention plate 211 is provided in the sand-carrying channel 1A. The backflow prevention plate 211 is inclined relative to the first partition 2. The top edge of the backflow prevention plate 211 is fixed to the edge of the sand discharge hole 21 away from the outlet 1B4, and the bottom edge of the backflow prevention plate 211 is located on the side of the top edge closer to the outlet 1B4. After the sand particles falling from the filter media in the irrigation channel 1B enter the sand-carrying channel 1A through the sand discharge hole 21, they flow towards the outlet 1B4 along with the water flow in the sand-carrying channel 1A. On the other hand, under the action of gravity, they reach the bottom of the backflow prevention plate 211. Under the blocking effect of the backflow prevention plate 211, the sand particles in the sand-carrying channel 1A are effectively prevented from flowing back into the irrigation channel 1B through the sand discharge hole 21. Furthermore, when the water in the irrigation channel 1B flows through the sand discharge hole 21 to the sand flow channel 1A, the water flow direction is to flush the surface of the anti-backflow plate 211 from top to bottom. At this time, the force of the water flow on the sand particles on the surface of the anti-backflow plate 211 is not to press the sand particles onto the surface of the anti-backflow plate 211, but to flush them into the sand flow channel 1A. This process is beneficial for the sand particles on the surface of the anti-backflow plate 211 to enter the sand flow channel 1A, and also prevents the sand particles from accumulating at the sand discharge hole 21 and causing the sand discharge hole 21 to become blocked.

[0036] Preferably, a gap is left between the bottom edge of the anti-backflow plate 211 and the base plate 13. This gap allows the water flow in the sand-carrying channel 1A to carry sand particles towards the drain outlet with less obstruction from the anti-backflow plate 211, reducing the accumulation of sand particles in the sand-carrying channel 1A, reducing the occurrence of blockages in the sand-carrying channel 1A, and reducing the maintenance frequency of the irrigation water suspended solids treatment device. At the same time, the anti-backflow plate 211 does not contact the base plate 13, which provides a margin for position adjustment of the first partition plate 2 between the first side plate 11 and the second side plate 12 without changing the size and installation angle of the anti-backflow plate 211. This allows the first partition plate 2 to be allowed to move up and down between the first side plate 11 and the second side plate 12, thereby matching the height difference between the water inlet and the bottom wall of different ditches.

[0037] Additionally, the second partition 3, the first side plate 11, and the second side plate 12 enclose the irrigation channel 1B to form a drainage channel 1C. If the water level at the inlet of the ditch is high, some water flows in from one end of the drainage channel 1C and out from the other end to be discharged from the ditch's outlet, thereby limiting the water flow in the irrigation channel 1B and facilitating control of irrigation efficiency. The water in the drainage channel 1C is not filtered and, due to the obstruction of the first side plate 11 and the second side plate 12, will not enter the farmland through the gaps in the ditch sidewalls.

[0038] Furthermore, the first side panel 11 and the second side panel 12 have a disassembly port 1C1 between their top edges for the second partition 3 to move. The disassembly port 1C1 can serve as a channel for disassembling the second partition 3, and even the filter frame 4 and the first partition 2, without requiring the frame 1 to be removed from the ditch. In addition, the disassembly port 1C1 allows rainwater to fall into the drainage channel 1C, thus avoiding interference with the ditch's normal rainwater drainage function.

[0039] In some embodiments, to accommodate the height difference between the water inlet and the bottom wall of the ditch, and to accommodate the height of the gap in the ditch sidewall, the height of the first partition 2 is adjustable. Correspondingly, the height of the second partition 3 also needs to be adjustable to ensure the size of the irrigation channel 1B and ensure irrigation efficiency. Consequently, the height of the irrigation channel 1B will also change. If the gap in the ditch sidewall is high, the height of the first partition 2 will rise until it is level with the bottom edge of the gap in the ditch sidewall. At this time, the first partition 2 may move to the main irrigation inlet 1B1, and part of the bottom of the main irrigation inlet 1B1 will be blocked by the ditch sidewall, resulting in a decrease in the area from which irrigation water can flow out of the main irrigation inlet 1B1, affecting irrigation efficiency. To reduce this impact, an auxiliary irrigation inlet 1B2 is also provided on the side plate. The auxiliary irrigation inlet 1B2 is located above the main irrigation inlet 1B1, and the edge of the second partition 3 extends upward to form a blocking plate 31. Under normal circumstances, the main irrigation inlet 1B1 is not obstructed by the ditch sidewall. At this time, the auxiliary irrigation inlet 1B2 is completely blocked by the shielding plate 31, which is located within the drainage channel 1C. This prevents unfiltered rainwater or irrigation water from flowing into the farmland from the auxiliary irrigation inlet 1B2. However, if the gap in part of the ditch sidewall is too high, causing partial obstruction of the main irrigation inlet 1B1, the height of the second partition plate 3 can be adjusted upwards, causing the shielding plate 31 to also rise. This results in the entire irrigation channel 1B shifting upwards, allowing part of the auxiliary irrigation inlet 1B2 to connect to the irrigation channel 1B. The shielding plate 31 then only partially or completely blocks the auxiliary irrigation inlet 1B2. In this case, the filtered irrigation water within the irrigation channel 1B can flow from the auxiliary irrigation inlet 1B2 to the gap in the ditch sidewall, thus ensuring irrigation efficiency. In addition, the disassembly port 1C1 also allows the shield 31 to reach at least partially above the side plate, thereby increasing the margin by which the shield 31 can rise, and correspondingly, increasing the height and area of ​​the auxiliary irrigation port 1B2.

[0040] Since the width of the ditch is relatively limited, the width of the corresponding frame 1 is also relatively limited. Therefore, when adjusting the height of the first partition 2 and the second partition 3, it is necessary to guide the movement of the first partition 2 and the second partition 3; otherwise, they may easily get stuck between the first side plate 11 and the second side plate 12. Based on this, in this embodiment, guide rails 111 are provided on the side of the first side plate 11 facing the second side plate 12, and on the side of the second side plate 12 facing the first side plate 11. A guide notch 32 is provided on the edge of the second partition 3. The guide rail 111 passes through the guide notch 32, and the guide rail 111 cooperates with the guide notch 32 to achieve vertical movement of the second partition 3.

[0041] Specifically, the guide rail 111 includes two spaced-apart guide plates 1112, with a positioning groove 1111 formed between the two guide plates 1112. The top edge of the filter frame 4 is located in the positioning groove 1111, allowing the top of the filter frame 4 to be positioned via the positioning groove 1111. The bottom of the filter frame 4 can be supported on the first partition plate 2. Simultaneously, when assembling or disassembling the filter frame 4, the left and right edges of the filter frame 4 can be guided within the positioning groove 1111 to ensure a tight contact between the filter frame 4 and the side plates.

[0042] Specifically, the second partition 3 is supported on the top of the filter frame 4, and the top edge of the filter frame 4 fills the portion of the positioning groove 1111 below the second partition 3, thereby reducing the flow of water in the drainage channel 1C into the irrigation channel 1B from the positioning groove 1111. At the same time, it ensures that there are no gaps between the second partition 3 and the filter media, ensuring that the water in the irrigation channel 1B always needs to be filtered by all the filter media on the filter frame 4 during the flow process.

[0043] In this embodiment, the first partition 2 does not need to be adjusted in height, and therefore does not need to have a gap to avoid the guide rail 111, so that the sand flow channel 1A and the irrigation flow channel 1B are connected only through the sand discharge hole 21.

[0044] In some other embodiments, the lower end of the guide rail 111 extends to the base plate 13, and the lower end of the guide rail 111 is a solid structure. In this case, guide openings that cooperate with the guide rail 111 can be opened on the left and right sides of the first partition 2, and the guide rail 111 fills the guide openings on the edges of the first partition 2.

[0045] In particular, the water flow process inside the frame 1 is a complex physical and chemical environment. Therefore, the guide rail 111 cannot be perfectly matched with the guide notch 32. Otherwise, after working for a period of time, the guide rail 111 or the edge of the guide notch 32 may rust, which may directly cause the second partition 3 to jam. Therefore, there is a certain gap between the guide rail 111 and the edge of the guide notch 32. Of course, the gap cannot be too large, otherwise the guide rail 111 will not play a guiding role. At the same time, the water flow in the drainage channel 1C may directly enter the irrigation channel 1B in large quantities through the gap, causing a large amount of irrigation water or rainwater to be irrigated to the farmland without filtration.

[0046] Correspondingly, the second partition 3 has a free state and a locked state. When the second partition 3 is in the free state, it is parallel to the first partition 2, and there is a gap between at least one guide plate 1112 and the edge of the guide notch 32. When the water flow velocity in the irrigation channel 1B changes, the second partition 3 is tilted relative to the first partition 2, and both guide plates 1112 are pressed against the edge of the guide notch 32. At this time, the second partition 3 is in the locked state, thereby preventing it from being overturned and ensuring the normal operation of the irrigation channel 1B.

[0047] Furthermore, the filter media in this embodiment is a bio-rope. Based on the characteristics of the bio-rope, the sand particles stay on the side of the bio-rope closer to the outlet 1B4. Therefore, during the process of water flow impacting the filter media, the sand particles will be washed off the filter media by the water flow, rather than being pressed on the filter media. This ensures that no matter the size of the water flow, the sand particles can fall off the filter media under the action of gravity. The corresponding sand discharge hole 21 is located on the side of the filter frame 4 closer to the outlet 1B4.

[0048] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0049] The embodiments described above are merely illustrative of several implementations of the present invention, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the invention patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these all fall within the protection scope of the present invention. Therefore, the protection scope of this invention patent should be determined by the appended claims.

Claims

1. A device for treating suspended solids in irrigation water, characterized in that, The system includes a frame (1), a filter frame (4), and a first partition (2). The frame (1) includes a bottom plate (13) and two side plates, namely a first side plate (11) and a second side plate (12). The first side plate (11) and the second side plate (12) are arranged opposite each other to fit against the inner walls of the ditch. The bottom plate (13) and the first partition (2) are arranged vertically between the first side plate (11) and the second side plate (12), and the first partition (2) is located above the bottom plate (13). The first side plate (11), the second side plate (12), the bottom plate (13), and the first partition (2) enclose to form a sand flow channel (1A). The filter frame (4) is installed on the first partition (2) and located above the sand flow channel (1A). The first partition (2) has a sand discharge hole (21) at the filter frame (4). The irrigation water suspended solids treatment device also includes a second partition (3), which is disposed between the first side plate (11) and the second side plate (12) and above the first partition (2). The first side plate (11), the second side plate (12), the first partition (2) and the second partition (3) enclose to form an irrigation channel (1B). The filter frame (4) is located inside the irrigation channel (1B). The side plate has a main irrigation port (1B1) at the irrigation channel (1B). The second partition (3), the first side plate (11) and the second side plate (12) enclose above the irrigation channel (1B) to form a drainage channel (1C). The filter frame (4) is equipped with a biological rope. The two ends of the irrigation channel (1B) are the inlet (1B3) and the outlet (1B4) respectively. The sand discharge hole (21) is located on the side of the filter frame (4) near the outlet (1B4). An anti-backflow plate (211) is provided inside the sand discharge channel (1A). The anti-backflow plate (211) is inclined relative to the first partition (2). The top edge of the anti-backflow plate (211) is fixed to the edge of the sand discharge hole (21) away from the outlet (1B4). The bottom edge of the anti-backflow plate (211) is located on the side of the top edge close to the outlet (1B4).

2. The irrigation water suspended solids treatment device according to claim 1, characterized in that, An auxiliary irrigation port (1B2) is also provided on the side plate. The auxiliary irrigation port (1B2) is located above the main irrigation port (1B1). The edge of the second partition (3) extends upward to form a shield (31). The second partition (3) is movably arranged in a direction perpendicular to the first partition (2) so that the shield (31) partially or completely blocks the auxiliary irrigation port (1B2).

3. The irrigation water suspended solids treatment device according to claim 2, characterized in that, The first side plate (11) and the second side plate (12) have a disassembly port (1C1) between their top edges for the second partition (3) to move.

4. The irrigation water suspended solids treatment device according to claim 3, characterized in that, The side of the first side plate (11) facing the second side plate (12) is provided with a guide rail (111) for moving and guiding the second partition (3). The guide rail (111) includes two spaced guide plates (1112), and a positioning groove (1111) is formed between the two guide plates (1112). Part of the edge of the filter frame (4) is located in the positioning groove (1111).

5. The irrigation water suspended solids treatment device according to claim 4, characterized in that, The second partition (3) has a guide notch (32) on its edge. The guide rail (111) passes through the guide notch (32). The second partition (3) has a free state and a locked state. When the second partition (3) is in the free state, the second partition (3) is parallel to the first partition (2) and there is a gap between at least one guide plate (1112) and the edge of the guide notch (32). When the second partition (3) is in the locked state, the second partition (3) is inclined relative to the first partition (2) and both guide plates (1112) are close to the edge of the guide notch (32).

6. The irrigation water suspended solids treatment device according to claim 4, characterized in that, The first partition (2) is movable in its normal direction, and the second partition (3) is supported on the filter frame (4).

7. The irrigation water suspended solids treatment device according to claim 1, characterized in that, A gap is left between the bottom edge of the anti-backflow plate (211) and the base plate (13).

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