An anti-blockage drainage method for water conservancy project construction

Abstract

The present invention discloses a drainage method for preventing blockage in water conservancy project construction, belonging to the technical field of water supply and drainage. An overflow pipe is connected to the end of the filter plate of the main pipe for drainage facing the water flow. A drainage pipe is connected to the side wall at the top of the overflow pipe. A water wheel assembly is arranged in the drainage pipe. The rotating shaft of the water wheel assembly is coaxially and fixedly connected to the hinge shaft of the filter plate as a whole. When the main pipe is silted and blocked, the water flows upward through the overflow pipe into the drainage pipe and drives the water wheel assembly to rotate during the process of flowing down through the drainage pipe, so as to rotate the filter plate in the main pipe. When the silted and blocked substances in the main pipe are carried away and the water can flow out of the main pipe normally and completely, no water surges into the overflow pipe and the impeller assembly stops rotating, and the filter plate returns to the original position of intercepting and filtering the water flow in the main pipe. The present invention can automatically achieve the anti-blockage effect of the drainage system in water conservancy construction.

Description

Technical Field

[0001] The present invention relates to the technical field of water supply and drainage, and specifically to an anti-blocking drainage method for water conservancy project construction. Background Art

[0002] In water conservancy project construction, the smoothness of the drainage system is the key to ensuring project quality and construction safety. Because during the construction process, it is easy to be blocked by the accumulation of sediment, gravel and other deposition blockages, which affects the construction progress and even causes safety accidents. The drainage technology in water conservancy project construction needs to be flexibly combined and implemented according to geological conditions, hydrological characteristics and project requirements. Generally, ditches are excavated on the ground surface or in the foundation pit, and then drainage pipes are laid, and the water is drained by natural gravity or combined with a water pump, that is, the water is guided to the sump and then pumped out. In the traditional drainage system, for the anti-blocking measures of the drainage system, basically a blind well such as an inspection well is set on a certain section of the drainage pipeline, and a filtering element such as a filter plate is set at a certain place in the well. When draining water, when the water flows through the blind well and then passes through the filter plate, the deposition blockages and the like are left on the filter plate. This structure is simple, the installation and construction are convenient, and the cost is extremely low, but the anti-blocking effect is not good. After the filter plate is used for a period of time, a large amount of sediment and gravel blocks will accumulate in the well, causing the drainage pipeline to be blocked and unable to drain water normally. At this time, it is necessary to manually check one by one and manually dredge. However, it will be blocked again soon. Therefore, developing an anti-blocking drainage system that can effectively prevent the drainage system from being blocked is of great significance for improving the construction efficiency and safety of water conservancy projects. Summary of the Invention

[0003] (1) Technical Problems to be Solved

[0004] Aiming at the deficiencies of the prior art, the present invention provides an anti-blocking drainage method for water conservancy project construction. By using this anti-blocking drainage method for water conservancy project construction, the automatic dredging and unclogging of the underground drainage system can be realized. By using the impact force of a large amount of accumulated water flow, the drainage system pipeline can be concentratedly flushed and the deposition blockages near the filter plate can be taken away, thereby effectively preventing the drainage system from being blocked.

[0005] (2) Technical Solutions

[0006] To achieve the above object, the present invention provides the following technical solution: A drainage method for preventing blockage in water conservancy project construction. A rotatable filter plate is provided in the main pipe for drainage. An overflow pipe is connected to the main pipe outside one end of the filter plate facing the water flow. The overflow pipe is vertically arranged. A drainage pipe is connected to the side wall at the top of the overflow pipe. A water wheel assembly is provided in the drainage pipe. The rotating shaft of the water wheel assembly is coaxially and fixedly connected to the hinge shaft of the filter plate as a whole. When the main pipe is silted and blocked, the water flows upward through the overflow pipe into the drainage pipe and drives the water wheel assembly to rotate during the process of flowing down through the drainage pipe, so as to rotate the filter plate in the main pipe, allowing the water flow to wash away at least a part of the silt and blockage in the main pipe. When the silt and blockage in the main pipe are carried away and the water flow can normally flow out through the main pipe completely, no water surges into the overflow pipe and the impeller assembly stops rotating, and the filter plate returns to its original position of intercepting and filtering the water flow in the main pipe.

[0007] Further, a flow velocity sensor is also provided outside one end of the filter plate along the water flow direction. The flow velocity sensor is used to detect whether there is water flowing past near the filter plate. A regulating valve is also provided in the overflow pipe. When the flow velocity sensor detects that the water flow velocity is lower than the set value, the regulating valve is operated to increase the overflow flow rate in the overflow pipe.

[0008] Further, a counterweight is fixed at the lower side near the edge of the filter plate. This counterweight makes the filter plate in a cross-section of the main pipe when the main pipe is unblocked, so that when the water wheel assembly stops rotating, the filter plate can return to its original position in time.

[0009] Further, the periphery of the filter plate is circular steel bars, and the steel bars are in sliding contact with the inner wall of the main pipe. A stainless steel metal hollow plate is coaxially fixed in the inner circular area of the steel bars.

[0010] Further, the rotating shaft and the hinge shaft are connected by a slipping structure. When the filter plate rotates to a temporary direction non-perpendicular to the main pipe, it cannot rotate synchronously with the rotating shaft any more. At this time, the hinge shaft does not rotate, and the rotating shaft rotates coaxially relative to the hinge shaft and slips.

[0011] Further, the slipping structure is made in the following way: One end of the rotating shaft inserted into the hinge shaft has a connecting end with a T-shaped cross-section. A stud is coaxially fixed at the center of the end of the connecting end. A cylindrical spring is sleeved outside the stud. The cylindrical spring is axially pressed by a locking nut. The locking nut is tightened at one end of the stud extending out of the frame of the filter plate. Then, within a set torque range, the rotating shaft is coaxially fixed to the hinge shaft as a whole due to the axial thrust of the cylindrical spring. When the hinge shaft is blocked by a limiting block fixed on the inner wall of the main pipe and cannot rotate, the rotating shaft rotates coaxially relative to the hinge shaft against the thrust of the cylindrical spring.

[0012] Furthermore, a limit pin is fixed on the end face of the hinge shaft away from the rotating shaft, and the limit block is radially fixed in the mounting hole of the main pipe for the hinge shaft to be rotatably mounted at the end away from the rotating shaft. When the hinge shaft rotates until the limit pin contacts the limit block, it can no longer continue to rotate along the force of the water wheel assembly pushed by the water flow. At this time, the filter plate is on the longitudinal section of the main pipe to maximize the water flow through the main pipe.

[0013] Furthermore, the drainage pipe includes an inclined pipe and an L-shaped water inlet pipe, one end of the water inlet pipe is connected to one side of the main pipe, and the connecting part is ensured to be located on the side of the filter plate away from the inclined pipe; the other end of the water inlet pipe is connected to the inclined pipe, and the center of the water inlet pipe used is raised upward and has an installation compartment, and the water wheel assembly is installed in this installation compartment. When water flows through the installation compartment, it only contacts the impeller on the lower side of the water wheel assembly.

[0014] Furthermore, one end of the main pipe is closed along the direction of water flow, but a drainage pipe is connected to the bottom of its closed end. One end of the water inlet pipe is provided directly above the interface between the drainage pipe and the main pipe. When water flows out of one end of the water inlet pipe, it just falls into the inlet of the drainage pipe directly below, thereby preventing the water from flowing back through the filter plate at this time.

[0015] In addition, in the above invention, a water supply pipeline can be connected to one side of the drainage pipe. After the worker connects the water supply pipeline to an external water source, he or she can actively start the water wheel assembly to drive the filter plate to flip.

[0016] (3) Beneficial effects

[0017] The present invention provides an anti-clogging drainage method for water conservancy project construction. Drainage is achieved through a drainage pipe system formed by a main pipe, a drainage pipe on one side, and an overflow pipe. Water flows into the drainage pipe only when the main pipe is blocked to a certain extent, thereby driving a water wheel assembly installed inside to rotate, realizing the rotation of the hinge shaft of the coaxially installed filter plate, so that the filter plate serving as a flow regulating element of the main pipe is opened, allowing water to suddenly gush out of the main pipe in large quantities, not only centrally carrying away blockages accumulated in the filter plate accessories, but also flushing the inner wall of the main pipe all the way, flushing away some attachments on the other pipe walls, automatically achieving the purpose of cleaning and unblocking the main pipe to prevent blockage.

[0018] This method can set filter plates at specific positions of the main pipeline, and then cooperate with corresponding conventional inspection wells to actively set the silted parts of the main pipeline at a position that is easy to repair, avoiding the situation of aimless siltation in the pipeline, which may lead to problems that are difficult to clean and dredge. Moreover, when cleaning and dredging, a filtering device for intercepting blockages can be set in advance at the outlet end of the drainage system, and the silt, gravel, residual geotextiles and other garbage generated by water conservancy construction can be removed and transferred in a planned manner. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 is a front view of the present invention;

[0020] Figure 2 is a top view of the present invention;

[0021] Figure 3 is a schematic connection diagram of the water wheel assembly and the filter plate in linkage;

[0022] Figure 4 is a schematic cross-sectional view of the water inlet pipe at the installation bin;

[0023] Figure 5 is a schematic diagram of the installation of the water wheel assembly in the installation bin;

[0024] Figure 6 is Figure 3 an enlarged sectional view at the F position in

[0025] In the figure: 1 - main pipeline, 2 - filter plate, 3 - overflow pipe, 4 - regulating valve, 5 - installation bin, 6 - rotating shaft, 601 - connection end, 7 - hinge shaft, 8 - stud, 9 - steel bar, 10 - water wheel assembly, 11 - water inlet pipe, 12 - cylindrical spring, 13 - flow velocity sensor, 14 - inclined pipe, 15 - drainage pipe, 16 - locking nut, 17 - counterweight, 18 - limit pin, 19 - limit block, 20 - installation hole, 701 - step surface. SPECIFIC EMBODIMENTS

[0026] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0027] This embodiment introduces a drainage method for preventing blockage in water conservancy project construction, as Figure 1 - Figure 2As shown in the figure, after the drainage ditch is excavated, when installing the drainage pipeline, a rotatable filter plate 2 can be arranged in the main pipeline 1 for drainage. On the main pipeline 1 outside one end of the filter plate 2 facing the water flow, assuming the water flow flows from right to left, an overflow pipe 3 is fixedly connected to the main pipeline 1 on the right side of the filter plate 2. This overflow pipe 3 is preferably installed vertically. At the same time, a drainage pipe is connected to the side wall of the top end of the overflow pipe 3, and a water wheel assembly 10 is arranged in the drainage pipe. When the water flows through the drainage pipe, it will surely touch the water wheel assembly 10, and then the water wheel assembly 10 can be rotated. Moreover, the rotating shaft 6 of the water wheel assembly 10 in this embodiment needs to be integrally combined with the hinge shaft 7 of the filter plate 2 in a coaxial fixed connection manner. When the main pipeline 1 is silted and blocked, the water flows through the overflow pipe 3, and then the water flows upward into the drainage pipe and flows down through the drainage pipe, pushing the water wheel assembly 10 to rotate, so that the filter plate 2 can be rotated in the main pipeline 1. In this way, when the filter plate 2 is not in the cross-section of the main pipeline 1, the water flow and part of the silted and blocked materials can flow through. When the filter plate 2 is in a horizontal position, for example, the water flow can wash away most or even all of the silted and blocked materials in the main pipeline 1. When the silted and blocked materials in the main pipeline 1 are taken away, and then the water flow can normally flow out of the main pipeline 1 completely, no more water will pour into the overflow pipe 3, so that the impeller assembly stops rotating, and then the filter plate 2 returns to the original position of intercepting and filtering the water flow in the main pipeline 1, that is, maintaining its filtering and intercepting function, thus preventing blockage. When the main pipeline 1 is blocked to a certain extent, the water flow changes direction and drives the water wheel assembly 10 to open the filter plate 2, so that the blocked silted and blocked materials can be carried out of the pipeline under the scouring of a large amount of concentrated water flow.

[0028] As Figure 1 shown, in practice, a flow velocity sensor 13 can also be arranged outside one end of the filter plate 2 along the water flow direction. This flow velocity sensor 13 is used to detect whether there is water flow near the filter plate 2 and how large the flow velocity is. At the same time, a regulating valve 4 can also be arranged in the overflow pipe 3. When the flow velocity sensor 13 detects that the water flow velocity is lower than the set value, the regulating valve 4 is operated to increase the overflow flow in the overflow pipe 3, so that the water flow quickly and largely flows into the overflow pipe 3, and then quickly pushes the water wheel assembly 10 to rotate, and the silted and blocked materials are discharged in time to dredge the pipeline. In order to maintain the filter plate 2 in a set initial position, as Figure 3 shown, a counterweight 17 can be fixed at the lower side near the edge of the filter plate 2. Due to the action of this counterweight 17, when the main pipeline 1 is unblocked, the filter plate 2 is in a cross-section of the main pipeline 1, so that when the water wheel assembly 10 stops rotating, the filter plate 2 can quickly return to the original position, that is, resume the intercepting and filtering function, and only when it is necessary to actively clean the silted and blocked materials at the filter plate 2, the filter plate 2 is flipped so that the silted and blocked materials flow out, and then are collected and processed centrally.

[0029] In addition, in practice, an external water supply pipe can be installed on the overflow pipe 3 to actively supply water to the corresponding pipeline, and the filter plate 2 can be flipped by the water wheel assembly 10. Of course, an additional automatic flipping mechanism can also be set up to manually and actively flip the filter plate 2 when necessary, so as to manually and actively discharge the accumulated blockages, and a device for collecting the accumulated blockages can be preparedly arranged at the discharge outlet of the main pipeline 1.

[0030] Specifically, as Figure 3 shown, the periphery of the filter plate 2 is a circular steel bar 9, and the steel bar 9 is in sliding contact with the inner wall of the main pipeline 1 for flexible rotation. A stainless steel metal hollow plate is coaxially fixed in the inner circular area of the steel bar 9 to intercept some of the accumulated blockages, so as to avoid being scattered everywhere in the main pipeline 1 and being inconvenient for later dredging and maintenance. And it is specially arranged near the filter plate 2, which can facilitate the excavation and cleaning of the inspection well nearby. The specific implementation can refer to the existing technology.

[0031] To prevent the continuous rotation of the filter plate 2, as Figure 3 and Figure 6 shown, a slipping structure needs to be used to connect the rotating shaft 6 and the hinge shaft 7. When the filter plate 2 rotates to a temporary direction that is not perpendicular to the main pipeline 1, it cannot rotate synchronously with the rotating shaft 6 anymore. That is, at this time, the hinge shaft 7 does not rotate, and the rotating shaft 6 rotates coaxially relative to the hinge shaft 7 and slips. The filter plate 2 maintains an attitude of opening the main pipeline 1, continuously discharging a large amount of water, and discharging the accumulated blockages concentratedly. During specific production, the slipping structure is as Figure 6 shown, and it is mainly made in the following way. At one end of the rotating shaft 6 inserted into the hinge shaft 7, there is a connecting end 601 with a T-shaped cross-section. In the center of the end of this connecting end 601, a stud 8 is also coaxially fixed. A cylindrical spring 12 is sleeved outside the stud 8. Preferably, the surface of the stud 8 with the spring sleeved is smooth and has no thread. The cylindrical spring 12 is axially pressed by a locking nut 16. This locking nut 16 is screwed onto one end of the stud 8 extending out of the frame of the filter plate 2. That is, after the stud 8 extends out of the clearance-fit screw hole, a locking nut 16 is screwed onto the end of the stud 8. Depending on the end face of the locking nut 16 and the hinge shaft 7 and the frame of the filter plate 2, for example Figure 6 shown, the left end face of the locking nut 16 slides in contact with a step surface 701 at the integrated part of the hinge shaft 7 and the steel bar 9 to achieve relative sliding. Then, within a set torque range, due to the axial thrust of the cylindrical spring 12, the rotating shaft 6 can be coaxially fixed with the hinge shaft 7 as a whole and temporarily rotate synchronously as a single shaft. When the hinge shaft 7 is fixed on the inner wall of the main pipeline 1, as Figure 3When a limit block 19 shown in the figure blocks and cannot rotate, the rotating shaft 6 overcomes the pushing force of the cylindrical spring 12, and then rotates coaxially relative to the hinge shaft 7. The filter plate 2 does not move, while the water wheel assembly 10 continues to rotate until the water flow in the main pipe 1 is only enough to flow out of the main pipe 1. At this time, the water wheel assembly 10 naturally stops rotating. And because the water volume decreases, due to its own weight, the filter plate 2 also automatically flips and resets.

[0032] As Figure 3 shown, in this embodiment, a limit pin 18 is fixed on the end face of the hinge shaft 7 away from the rotating shaft 6. In the mounting hole 20 of the main pipe 1 for the end of the hinge shaft 7 away from the rotating shaft 6 to rotate and install, a limit block 19 is radially fixed, that is, the limit block 19 protrudes and is fixed on the inner wall of the mounting hole 20. During the use process, when the hinge shaft 7 rotates to the limit pin 18 contacting the limit block 19, it cannot continue to rotate along the force of the water flow pushing the water wheel assembly 10. At this time, the filter plate 2 can be in the longitudinal section of the main pipe 1, so that the water flow can pass through the main pipe 1 to the greatest extent, and the accumulated blockage near the filter plate 2 can be concentrated and discharged.

[0033] As a more detailed implementation manner, as Figure 1 - Figure 2 shown, this drainage pipe includes an inclined pipe 14 and an L-shaped water inlet pipe 11. One end of the water inlet pipe 11 is connected to one side of the main pipe 1, and it is ensured that the connection part is located on the side of the filter plate 2 away from the inclined pipe 14. The other end of the water inlet pipe 11 is connected to the inclined pipe 14. As Figure 4 - Figure 5 In fact, Figure 3 the structure shown is Figure 5 a schematic diagram of the installation structure of the present invention in the A-A cross-sectional direction in the figure. The central part of this water inlet pipe 11 used has an upward bulge with an installation chamber 5. The water wheel assembly 10 is installed in this installation chamber 5. When the water flow passes through the installation chamber 5, it only contacts the impeller on the lower side of the water wheel assembly 10 to push the water wheel assembly 10 to rotate. In order to prevent the water flow from flowing back and impacting the end face of the filter plate 2, as Figure 1 shown, one end of the main pipe 1 along the water flow direction is closed, but a drainage pipe 15 is connected to the bottom of its closed end. Exactly above the interface between the drainage pipe 15 and the main pipe 1, one end of the water inlet pipe 11 mentioned above is specially provided. When the water flows out of one end of the water inlet pipe 11, it just falls into the inlet of the drainage pipe 15 directly below it and then is discharged outward, preventing the water flow at this time from flowing back through the filter plate 2.

[0034] It should be noted that, in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprising", "including" or any other variant thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements not only includes those elements, but also includes other elements not expressly listed, or further includes elements inherent to such process, method, article or device.

[0035] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A method for preventing blockage and drainage for water conservancy project construction, characterized in that: A rotatable filter plate (2) is provided in a main pipe (1) for drainage. An overflow pipe (3) is connected to the main pipe (1) outside the end of the filter plate (2) facing the water flow. The overflow pipe (3) is vertically provided. A drainage pipe is connected to the top side wall of the overflow pipe (3). A water wheel assembly (10) is provided in the drainage pipe. The rotating shaft (6) of the water wheel assembly (10) is coaxially fixed to the hinge shaft (7) of the filter plate (2). When the main pipe (1) is blocked by silt, water flows through the overflow pipe (3). In the process of flowing upward into the drainage pipe and flowing downward through the drainage pipe, the water wheel assembly (10) is driven to rotate, so as to drive the filter plate (2) to rotate in the main pipe (1), so that the water flow flushes away at least a portion of the silt and blockage in the main pipe (1); when the silt and blockage in the main pipe (1) are removed and the water flow can flow out of the main pipe (1) normally, no water flows into the overflow pipe (3), causing the impeller assembly to stop rotating, and the filter plate (2) returns to its original position of intercepting and filtering the water flow in the main pipe (1); The rotating shaft (6) and the hinge shaft (7) are connected by a slipping structure. When the filter plate (2) rotates to a temporary direction that is not perpendicular to the main pipeline (1), it can no longer rotate synchronously with the rotating shaft (6). At this time, the hinge shaft (7) does not rotate, and the rotating shaft (6) rotates coaxially with respect to the hinge shaft (7) and slips. The slipping structure is manufactured in the following manner: a connecting end (601) with a T-shaped cross section is provided at one end of the rotating shaft (6) inserted into the hinge shaft (7). A stud (8) is coaxially fixed to the center of the end of the connecting end (601). The stud (8) 8) is sleeved with a cylindrical spring (12) on the outside. The cylindrical spring (12) is axially compressed by a locking nut (16). The locking nut (16) is tightened on one end of the stud (8) extending out of the frame of the filter plate (2), thereby making the rotating shaft (6) coaxially fixed to the hinge shaft (7) within a set torque range due to the axial thrust of the cylindrical spring (12). When the hinge shaft (7) is blocked by a limit block (19) fixed on the inner wall of the main pipe (1) and cannot rotate, the rotating shaft (6) overcomes the thrust of the cylindrical spring (12) and rotates coaxially relative to the hinge shaft (7).

2. The anti-blocking drainage method for water conservancy project construction according to claim 1, characterized in that: A flow rate sensor (13) is provided outside one end of the filter plate (2) in the direction of water flow, and the flow rate sensor (13) is used to detect whether water flows near the filter plate (2); a regulating valve (4) is also provided in the overflow pipe (3), and when the flow rate sensor (13) detects that the water flow rate is lower than a set value, the regulating valve (4) is operated to increase the overflow flow in the overflow pipe (3).

3. The anti-blocking drainage method for water conservancy project construction according to claim 1, characterized in that: A counterweight (17) is fixed on the lower side of the filter plate (2) near its edge. The counterweight (17) allows the filter plate (2) to remain unobstructed in the main pipe (1). The filter plate (2) is located on a cross section of the main pipe (1), so that when the water wheel assembly (10) stops rotating, the filter plate (2) can be promptly restored to its original position.

4. The anti-clogging drainage method for water conservancy project construction according to claim 1, characterized in that: The filter plate (2) is surrounded by circular steel bars (9), which are in sliding contact with the inner wall of the main pipe (1). A stainless steel hollow plate is coaxially fixed in the inner circular area of the steel bars (9).

5. The anti-clogging drainage method for water conservancy project construction according to claim 1, characterized in that: A limit pin (18) is fixed on the end face of the hinge shaft (7) away from the rotating shaft (6), and a limit block (19) is radially fixed in the mounting hole (20) of the main pipe (1) for the hinge shaft (7) to be rotatably mounted at the end away from the rotating shaft (6). When the hinge shaft (7) is rotated until the limit pin (18) contacts the limit block (19), the hinge shaft (7) can no longer continue to rotate along the force of the water wheel assembly (10) pushed by the water flow. At this time, the filter plate (2) is located on the longitudinal section of the main pipe (1), so as to maximize the water flow through the main pipe (1).

6. The anti-clogging drainage method for water conservancy project construction according to claim 1, characterized in that: The drainage pipe comprises an inclined pipe (14) and an L-shaped water inlet pipe (11). One end of the water inlet pipe (11) is connected to one side of the main pipe (1), and the connection portion is ensured to be located on the side of the filter plate (2) away from the inclined pipe (14); the other end of the water inlet pipe (11) is connected to the inclined pipe (14). The center of the water inlet pipe (11) is upwardly raised and has an installation chamber (5). The water wheel assembly (10) is installed in the installation chamber (5). When water flows through the installation chamber (5), it only contacts the impeller on the lower side of the water wheel assembly (10).

7. The anti-clogging drainage method for water conservancy project construction according to claim 6, characterized in that: The main pipe (1) is closed at one end along the water flow direction, but a drainage pipe (15) is connected to the bottom of the closed end. One end of the water inlet pipe (11) is arranged just above the interface between the drainage pipe (15) and the main pipe (1). When water flows out of one end of the water inlet pipe (11), it falls into the inlet of the drainage pipe (15) just below, thereby preventing the water from flowing back through the filter plate (2).

8. The anti-clogging drainage method for water conservancy project construction according to claim 1, characterized in that: A water supply pipeline is also connected to one side of the drainage pipe. After the worker connects the water supply pipeline to an external water source, he actively starts the water wheel assembly to drive the filter plate (2) to flip.

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