A dam with water purification function

Abstract

The present invention relates to the field of water conservancy projects, specifically a dam with a water purification function, comprising a dam body and a flow regulating mechanism, wherein the dam body comprises a dam foundation built on the river bottom and piers on the upper surfaces of both ends of the dam foundation; the flow regulating mechanism comprises a gate plate, a solid baffle fixed on the dam foundation, and a filter screen plate integrally fixed on the solid baffle plate, wherein mud and dirt blocked by the filter screen plate are collected in a sump; the dam also comprises: a cleaning mechanism that utilizes water wave energy to drive and clean the inner curved surface of the filter screen plate, wherein the cleaning mechanism drives a sewage discharge mechanism to discharge the dirt in the sump to the river bottom while cleaning the filter screen plate, and the cleaning mechanism also drives a water pump assembly to extract river water to flush the bottom of the sump to prevent sand and gravel accumulated at the bottom of the sump from getting stuck in the sewage discharge mechanism. This dam with a water purification function can regulate the water flow in the river channel and purify the river water, greatly reducing the diffusion speed of the river water downstream and facilitating the discharge of dirt into the river channel.

Description

Technical Field

[0001] The present invention relates to the field of water conservancy projects, in particular to a dam with a water purification function. Background Art

[0002] A barrage is a structure that blocks a river and blocks water flow. It is typically used for water storage, flood control, and silt removal, making it a crucial water conservancy facility. During the rainy season, mud and dirt accumulate in rivers, and rivers are prone to pollution incidents. This causes polluted water to flow along the river, leading to the spread of pollution. Therefore, when chemical treatments are applied to the polluted water, the flocculants produced are difficult to filter, and mud, sand, and gravel in the river water are also difficult to remove. Therefore, we propose a barrage with water purification capabilities. Summary of the Invention

[0003] The present invention aims to provide a dam with a water purification function to solve the problems raised in the above-mentioned background art. To achieve the above-mentioned object, the present invention provides the following technical solution: a dam with a water purification function, comprising a dam body and a flow regulating mechanism disposed on the dam body, wherein the dam body comprises a dam foundation constructed on the riverbed and piers on the upper surfaces of both ends of the dam foundation;

[0004] The flow regulating mechanism includes a gate plate, a solid baffle fixed on the dam foundation, and a filter screen plate integrally fixed to the solid baffle plate. A sewage collection tank is provided on the dam foundation. Mud and dirt blocked by the filter screen plate are collected in the sewage collection tank. The gate plate and the filter screen plate both have arc-shaped cross-sections, and the two ends of the filter screen plate are respectively fixedly connected to the two piers.

[0005] Also includes:

[0006] A cleaning mechanism is driven by water wave energy to clean the inner curved surface of the filter screen, and the cleaning mechanism is arranged on the pier;

[0007] The sewage discharge mechanism and the cleaning mechanism drive the sewage discharge mechanism to discharge the dirt in the sewage pool to the river bottom while cleaning the filter plate. The cleaning mechanism also drives the water pump assembly to extract river water to flush the bottom of the sewage pool to prevent the sand and gravel accumulated at the bottom of the sewage pool from getting stuck in the sewage discharge mechanism.

[0008] Preferably, arc-shaped grooves 2 are provided on the opposite surfaces of the two piers, and the center of the arc-shaped grooves 2 coincides with the center of the filter screen, and the two ends of the gate plate are inserted and slidably connected in the two corresponding arc-shaped grooves 2.

[0009] Preferably, a circular arc-shaped rack is fixed on the outer arc surface of the gate plate, and a motor and a vertical pole are fixed on the pier seat, a worm is connected to the fixed axis rotation on the vertical pole, and the output shaft of the motor is connected to the worm gear transmission, the worm is meshed with the rack, and the center of the rack coincides with the center of the gate plate, a sealing strip is fixed on the bottom edge of the inner arc surface of the gate plate, and the sealing strip is fitted with the outer arc surface of the filter screen plate and the solid baffle, a sealing strip is fixed on the side edge of the outer arc surface of the filter screen plate, and the sealing strip is fitted with the inner arc surface of the gate plate.

[0010] Preferably, the cleaning mechanism includes a shaft connected to the pier seat in a fixed-axis rotation manner, and a fan-shaped tooth plate is fixed on the shaft, a telescopic rod is fixed on the fan-shaped tooth plate, and a buoyancy box is hinged on one end of the telescopic rod away from the fan-shaped tooth plate.

[0011] Preferably, a floating assembly is provided on the pier seat for automatically adjusting the length of the telescopic rod according to the water level. The telescopic rod includes a slide cylinder and a slide rod slidably connected in the slide cylinder. The slide cylinder is fixedly connected to the fan-shaped tooth plate. The slide rod is hinged to the float box. The floating assembly includes a liquid storage cylinder fixed on the pier seat and a slide groove opened on the pier seat. A piston plate 2 is slidably connected in the liquid storage cylinder, a floating block is slidably connected in the slide groove, and the floating block is fixedly connected to the piston plate 2 through a connecting rod 2. The space inside the liquid storage cylinder located below the piston plate 2 is communicated with the interior of the slide cylinder through a liquid pipe 3.

[0012] Preferably, the cleaning mechanism also includes a frame, on which is fixed a brush strip for cleaning the inner arc surface of the filter screen plate, and the two opposite sides of the two pier seats are provided with an arc-shaped groove, and the two ends of the frame are plugged into and slidably connected in the two corresponding arc-shaped grooves, and the side of the frame facing away from the filter screen plate is fixed with an arc-shaped rack 2, the rack 2 and the fan-shaped tooth plate are both meshed with the gear, and the gear is connected to the pier seat on a fixed axis.

[0013] Preferably, the sewage discharge mechanism includes a frame fixed on the pier seat, and roller one and roller two are respectively connected to each other on fixed axes, and roller one is located inside the sewage collection tank. Roller one and roller two are connected by a conveyor belt transmission, and the outer side surface of the conveyor belt is fixed with multiple scrapers at equal intervals along its length, and the conveyor belt and the scrapers are both hollow. A belt conveyor is provided on the pier seat, and the belt conveyor is used to transport the mud and sewage falling from roller two.

[0014] Preferably, the shaft is coaxially fixedly connected to the inner ring of the ratchet, and the outer ring of the ratchet is transmission-connected to the second roller via a sprocket assembly.

[0015] Preferably, the water pump assembly includes a pump barrel, a piston plate is slidably connected to the pump barrel, and a connecting rod is fixed on the piston plate. The connecting rod is hinged to the lower end of the frame, and the pump barrel is fixedly connected to the pier seat.

[0016] Preferably, the ends of the pump barrel are fixed and connected with one-way valve 1 and one-way valve 2. One-way valve 1 is connected to the water on the outside of the gate plate through liquid pipe 1, and one-way valve 2 is connected to the water inlet end of the channel opened on the dam foundation through liquid pipe 2. The water outlet end of the channel is connected to the bottom of the sewage sump. The conduction direction of one-way valve 1 points to the inside of the pump barrel, and the conduction direction of one-way valve 2 points to the channel.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] In the present invention, the water flow in the river channel is regulated by the flow regulating mechanism on the dam body. When the water flows through the filter screen from the upstream, the mud and solid pollutants in the river water are blocked by the filter screen, thereby purifying the river water, greatly reducing the diffusion speed of the river water to the downstream, and the pollutants are collected in the sewage pool so as to be discharged from the river channel.

[0019] In the present invention, the cleaning mechanism uses water wave energy as driving energy to clean the inner curved surface of the filter screen in real time, thereby maintaining the efficient filtering effect of the filter screen, avoiding blockage, and improving the purification efficiency and effect of river water. The use of river water wave energy for driving does not require an external power supply and manual participation, saving time, labor and energy.

[0020] In the present invention, the cleaning mechanism drives the sewage discharge mechanism to discharge the dirt in the sewage pool to the river bottom while cleaning the filter screen, which saves time and effort. The cleaning mechanism also drives the water pump assembly to extract river water to flush the bottom of the sewage pool, preventing the sand and gravel accumulated at the bottom of the sewage pool from getting stuck in the sewage discharge mechanism, thereby ensuring the discharge efficiency of mud and sewage. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a schematic diagram of the general assembly cross-sectional structure of the present invention;

[0022] Figure 2 for Figure 1 A in the figure shows the enlarged structural diagram;

[0023] Figure 3 Schematic diagram of the cross-sectional structure of the pump barrel in the present invention;

[0024] Figure 4 This is a schematic diagram of the cross-sectional structure of the connection between the telescopic rod and the floating assembly in the present invention;

[0025] Figure 5 It is a schematic diagram of the dam structure in the present invention.

[0026] Figure: 1. Sealing strip 1; 2. Solid baffle; 3. Drum 1; 4. Sump; 5. Frame; 6. Channel; 7. Arc-shaped trough 1; 8. Pump barrel; 9. Ratchet; 10. Scraper; 11. Dam foundation; 12. Pier; 13. Arc-shaped trough 2; 14. Filter screen; 15. Gate; 16. Sealing strip 2; 17. Motor; 18. Drum 2; 19. Worm; 20. Rack 1; 21. Vertical pole; 22. Frame; 23. Sector-shaped tooth plate; 24. Shaft; 25. Sprocket assembly; 26. Belt conveyor.

[0027] 27, telescopic rod; 2701, slide; 2702, slide rod; 2703, liquid pipe 3;

[0028] 28. Floating assembly; 2801. Floating block; 2802. Piston plate 2; 2803. Liquid reservoir; 2804. Connecting rod 2; 2805. Slide;

[0029] 29. Float; 30. Rack 2; 31. Brush bar; 32. Gear; 33. Connecting rod 1; 34. One-way valve 1; 35. Liquid pipe 1; 36. One-way valve 2; 37. Liquid pipe 2; 38. Piston plate 1; 39. Conveyor belt. DETAILED DESCRIPTION

[0030] 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. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0031] See also Figures 1 to 5 , the present invention provides a technical solution: Example

[0032] A dam with a water purification function includes a dam body and a flow regulating mechanism arranged on the dam body. The dam body includes a dam foundation 11 constructed at the river bottom and piers 12 on the upper surfaces of both ends of the dam foundation 11.

[0033] The flow regulating mechanism includes a gate plate 15, a solid baffle 2 fixed to the dam foundation 11, and a filter screen 14 integrally fixed to the solid baffle 2. A sump 4 is provided on the dam foundation 11. Mud and dirt intercepted by the filter screen 14 are collected in the sump 4. The cross-sections of the solid baffle 2, gate plate 15, and filter screen 14 are all arc-shaped, and the two ends of the filter screen 14 are respectively fixedly connected to the two piers 12.

[0034] Also includes:

[0035] A cleaning mechanism that utilizes water wave energy to drive and clean the inner curved surface of the filter screen plate 14, and the cleaning mechanism is arranged on the pier 12;

[0036] The sewage discharge mechanism and the cleaning mechanism drive the sewage discharge mechanism to discharge the dirt in the sewage pool 4 to the river bottom while cleaning the filter screen 14. The cleaning mechanism also drives the water pump assembly to extract river water to flush the bottom of the sewage pool 4 to prevent the sand and gravel accumulated at the bottom of the sewage pool 4 from getting stuck in the sewage discharge mechanism. Example

[0037] This embodiment is realized on the basis of embodiment 1, and the two opposite surfaces of the two pier seats 12 are provided with arc-shaped grooves 2 13, and the center of the arc-shaped grooves 2 13 coincides with the center of the filter screen plate 14, and the two ends of the gate plate 15 are plugged and slidably connected in the two corresponding arc-shaped grooves 2 13, and an arc-shaped rack 1 20 is fixed on the outer arc surface of the gate plate 15, and a motor 17 and a vertical rod 21 are fixed on the pier seat 12, and a fixed axis rotation connection is provided on the vertical rod 21. A worm 19 is connected, and the output shaft of the motor 17 is connected to the worm 19 for transmission. The worm 19 is meshed with a rack 20, and the center of the rack 20 is coincident with the center of the gate 15. A sealing strip 1 is fixed to the bottom edge of the inner arc surface of the gate 15, and the sealing strip 1 is fitted with the outer arc surface of the filter screen plate 14 and the solid baffle 2. A sealing strip 2 16 is fixed to the side edge of the outer arc surface of the filter screen plate 14, and the sealing strip 2 16 is fitted with the inner arc surface of the gate 15.

[0038] In this embodiment, the cleaning mechanism includes a shaft 24 that is rotatably connected to the pier seat 12, and a fan-shaped tooth plate 23 is fixed on the shaft 24, and a telescopic rod 27 is fixed on the fan-shaped tooth plate 23. The telescopic rod 27 is hinged to a buoyancy box 29 at one end away from the fan-shaped tooth plate 23. The cleaning mechanism also includes a frame 22, and a brush strip 31 for cleaning the inner arc surface of the filter screen plate 14 is fixed on the frame 22. The two opposite sides of the pier seats 12 are provided with an arc-shaped groove 7, and the two ends of the frame 22 are plugged into and slidably connected to the two corresponding arc-shaped grooves 7. An arc-shaped rack 23 is fixed on the side of the frame 22 facing away from the filter screen plate 14. The rack 230 and the fan-shaped tooth plate 23 are both meshed with the gear 32, and the gear 32 is rotatably connected to the pier seat 12.

[0039] In this embodiment, the sewage discharge mechanism includes a frame 5 fixed on the pier 12, and the two ends of the frame 5 are respectively connected to roller 1 3 and roller 2 18 for fixed-axis rotation, and roller 1 3 is located on the inner side of the sewage collection tank 4, and roller 1 3 and roller 2 18 are connected by a conveyor belt 39, and the outer side surface of the conveyor belt 39 is fixed with multiple scrapers 10 at equal intervals along its length, and the conveyor belt 39 and the scrapers 10 are both hollow. A belt conveyor 26 is provided on the pier 12, and the belt conveyor is used to transport the mud and sewage falling from roller 2 18. The shaft 24 is coaxially fixedly connected to the inner ring of the ratchet 9, and the outer ring of the ratchet 9 is connected to roller 2 18 through a sprocket assembly 25.

[0040] In this embodiment, the water pumping assembly includes a pump barrel 8, in which a piston plate 38 is slidably connected, and a connecting rod 33 is fixed on the piston plate 38, and the connecting rod 33 is hinged to the lower end of the frame 22. The pump barrel 8 is connected to the pier 12 by fixed-axis rotation, and the ends of the pump barrel 8 are fixed and connected with a one-way valve 34 and a one-way valve 36. The one-way valve 34 is connected to the water on the outside of the gate plate 15 through a liquid pipe 35, and the one-way valve 36 is connected to the water inlet end of the channel 6 opened on the dam foundation 11 through a liquid pipe 37. The water outlet end of the channel 6 is connected to the bottom of the sewage sump 4. The conduction direction of the one-way valve 34 points to the inside of the pump barrel 8, and the conduction direction of the one-way valve 36 points to the channel 6. Example

[0041] This embodiment is implemented on the basis of embodiment 2, and a floating assembly 28 is provided on the pier 12 to automatically adjust the length of the telescopic rod 27 according to the water level;

[0042] The telescopic rod 27 includes a slide 2701 and a slide rod 2702 slidably connected to the slide 2701. The slide 2701 is fixedly connected to the sector tooth plate 23, and the slide rod 2702 is hinged to the buoyancy box 29.

[0043] The floating assembly 28 includes a liquid storage cylinder 2803 fixed on the pier seat 12 and a slide groove 2805 opened on the pier seat 12. The piston plate 2802 is slidably connected in the liquid storage cylinder 2803, and the floating block 2801 is slidably connected in the slide groove 2805. The floating block 2801 is fixedly connected to the piston plate 2802 through the connecting rod 2804. The space inside the liquid storage cylinder 2803 located below the piston plate 2802 is connected to the interior of the slide cylinder 2701 through the liquid pipe 3 2703.

[0044] Working principle and advantages of the present invention: When the barrage with water purification function is in use, the working process is as follows:

[0045] like Figure 1 and Figure 5As shown, the piers 12 at both ends of the dam foundation 11 are built on the slopes on both sides of the river channel, thereby forming a recess opening upward for the river water to flow through, and the inner arc surfaces of the gate plate 15 and the filter screen plate 14 face the upstream side of the river water.

[0046] The motor 17 is started to work, so that the motor 17 drives the worm 19 to rotate, so that the worm 19 drives the gate 15 to move up or down in the arc-shaped groove 2 13 through the rack 1 20, thereby causing the gate 15 to increase or decrease the flow of the recess, thereby realizing the regulation of the water flow in the river channel, and when the water flows through the filter plate 14 from the upstream, the mud and solid pollutants in the river water are blocked by the filter plate 14, thereby purifying the river water, greatly reducing the diffusion speed of the river water to the downstream, and the dirt is gathered in the sewage pool so as to be discharged from the river channel, wherein the sealing strip 1 plays a role in leak prevention, avoiding When the gate plate 15 is used to collect river water, the water leaks through the gap between the gate plate 15 and the filter screen plate 14. The sealing strip 16 prevents dirt and floating objects in the river water from entering the gap between the gate plate 15 and the filter screen plate 14 under the action of water flow fluctuations, thereby avoiding blockage of the gap, which makes cleaning inconvenient and also affects the smooth movement of the gate plate 15. When the water volume in the river channel increases and the water flow is turbulent, the impact of the river water will be reversed and discharged upstream under the guidance of the inner arc surface of the gate plate 15, thereby reducing the impact of the river on the dam body and the filter screen plate 14 and improving the service life of the dam body and the filter screen plate 14.

[0047] As described above, under the action of the river water fluctuation, the buoyancy box 29 is continuously moved up and down, so that the fan-shaped tooth plate 23 drives the shaft 24 to rotate back and forth, as shown in FIG. Figure 2 As shown, the sector tooth plate 23 drives the rack 230 to rotate back and forth through the gear 32, and the rack 230 simultaneously drives the frame 22 to move up or down in the arc-shaped groove 7 while rotating back and forth, so that the frame 22 drives the brush strip 31 to clean the inner arc surface of the filter screen plate 14 in real time, thereby maintaining the efficient filtering effect of the filter screen plate 14, avoiding blockage, and improving the purification efficiency and effect of the river water. It uses the energy of river water fluctuation to drive without the need for external power supply and manual participation, saving time, labor and energy.

[0048] While the shaft 24 rotates back and forth, the ratchet 9 and the sprocket assembly 25 drive the roller 2 18 to rotate clockwise, so that the roller 2 18 drives the conveyor belt 39 and the roller 1 3 to rotate clockwise, and then the conveyor belt 39 drives the scraper 10 to scrape the dirt in the sump 4 and discharge it onto the belt conveyor 26, and the belt conveyor 26 outputs it to the outside of the river channel. The belt conveyor 26 can also be replaced by a box trough set at an angle downward, and the dirt slides out by its own weight. The conveyor belt 39 and the scraper 10 are both hollowed out to drain water, so that the dirt can be discharged more efficiently.

[0049] like Figure 1 and Figure 3 As shown, the frame 22 reciprocates upward or downward in the arc-shaped groove 7, and at the same time drives the piston plate 1 38 to slide reciprocatingly in the pump barrel 8 through the connecting rod 1 33, so that the piston plate 1 38 alternately applies compression force and suction force to the space on both sides of it in the pump barrel 8. When the space on one side of the piston plate 1 38 in the pump barrel 8 is subjected to suction force, since the conduction direction of the one-way valve 1 34 points to the inside of the pump barrel 8 and the conduction direction of the one-way valve 2 36 points to the channel 6, the suction force is applied to the liquid pipe 35. The drinking water purified by the filter screen 14 on one side of the outer arc surface of the gate plate 15 is sucked into the corresponding space in the pump barrel 8, so as to prevent large mud and dirt from clogging the pipeline and the pump barrel 8. When a compressive force is applied in the space, the water in the space is sprayed to the bottom surface of the sump 4 through the liquid pipe 2 37 and the channel 6, so that the dirt at the bottom of the sump 4 is flushed up by the high-speed water flow, avoiding the scraper 10 from being stuck after accumulation, thereby ensuring that the conveyor belt 39 drives the scraper 10 to run smoothly and ensuring the discharge efficiency of mud and dirt.

[0050] like Figure 1 and Figure 4 As shown, when the river water level is low, the float 2801 moves down along the slide 2805 under its own weight and drives the piston plate 2802 to move down through the connecting rod 2804, so that the piston plate 2802 transfers the oil in the liquid storage cylinder 2803 to the slide cylinder 2701 through the liquid pipe 3 2703, and the oil pushes the slide 2702 out, thereby increasing the length of the telescopic rod 27, and then increasing the lever arm of the telescopic rod 27, to avoid the situation where the river water fluctuation energy is small and cannot provide sufficient driving torque when the river water level is low. When the river water level is high, the float 2801 moves up along the slide 2805 under the action of buoyancy and drives the piston plate 2802 to move down through the connecting rod 2804, so that the piston plate 2802 transfers the oil in the liquid storage cylinder 2803 to the slide cylinder 2701 through the liquid pipe 3 2703, and the oil pushes the slide 2702 out, thereby increasing the length of the telescopic rod 27, and then increasing the lever arm of the telescopic rod 27, to avoid the situation where the river water level is low and the river water fluctuation energy is small and cannot provide sufficient driving torque. 804 drives the piston plate 2802 to move upward, so that the piston plate 2802 applies a suction force to the liquid storage cylinder 2803. The suction force draws the oil in the slide cylinder 2701 into the liquid storage cylinder 2803 through the liquid pipe 3 2703, and causes the slide rod 2702 to move into the slide cylinder 2701, thereby reducing the length of the telescopic rod 27, and then reducing the lever arm of the telescopic rod 27. Since the water level is high and the water body contains large wave energy, it can increase sufficient driving torque, so that the telescopic rod 27 reduces the horizontal torsion applied by the water body to the telescopic rod 27 through the buoyancy box 29, thereby increasing the service life of the telescopic rod 27 and the shaft rod 24.

[0051] 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.

[0052] In the description of the present invention, unless otherwise specified, "plurality" means two or more; terms such as "upper," "lower," "left," "right," "inner," "outer," "front end," "rear end," "head," and "tail" indicate positions or relationships based on those shown in the accompanying drawings. These terms are intended solely to facilitate the description of the present invention and simplify the description. They do not indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limiting the present invention. Furthermore, terms such as "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0053] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "connected" and "connection" should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integral connection; mechanical connection, electrical connection; direct connection, or indirect connection through an intermediary. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on the specific circumstances.

Claims

1. A dam with a water purification function, comprising a dam body and a flow regulating mechanism disposed on the dam body, characterized in that: The dam body includes a dam foundation (11) constructed on the river bottom and piers (12) on the upper surfaces of both ends of the dam foundation (11); The flow regulating mechanism comprises a gate plate (15), a solid baffle (2) fixed on the dam base (11), and a filter screen plate (14) integrally fixed on the solid baffle plate (2), and a sewage collecting tank (4) is provided on the dam base (11), and mud and dirt blocked by the filter screen plate (14) are collected in the sewage collecting tank (4), the gate plate (15) and the filter screen plate (14) are both arc-shaped in cross-section, and the two ends of the filter screen plate (14) are respectively fixedly connected to the two piers (12); Also includes: A cleaning mechanism is driven by water wave energy to clean the inner curved surface of the filter screen plate (14), and the cleaning mechanism is arranged on the pier (12); A sewage discharge mechanism, wherein the cleaning mechanism drives the sewage discharge mechanism to discharge the sewage in the sewage pool (4) to the river bottom while cleaning the filter screen (14), and the cleaning mechanism also drives the water pump assembly to extract river water to flush the bottom of the sewage pool (4) to prevent the sand and gravel accumulated at the bottom of the sewage pool (4) from getting stuck in the sewage discharge mechanism; The cleaning mechanism comprises a shaft (24) rotatably connected to the pier seat (12), a fan-shaped tooth plate (23) being fixed on the shaft (24), a telescopic rod (27) being fixed on the fan-shaped tooth plate (23), and a buoyancy box (29) being hingedly connected to one end of the telescopic rod (27) away from the fan-shaped tooth plate (23); The cleaning mechanism further comprises a frame (22), a brush bar (31) for cleaning the inner arc surface of the filter screen plate (14) being fixed on the frame (22), arc-shaped grooves (7) are provided on opposite sides of the two pier seats (12), and both ends of the frame (22) are plugged into and slidably connected in the two corresponding arc-shaped grooves (7), a rack (30) in the shape of an arc is fixed on the side of the frame (22) facing away from the filter screen plate (14), the rack (30) and the fan-shaped toothed plate (23) are both meshed and connected with the gear (32), and the gear (32) is fixedly connected to the pier seat (12) for rotation; The sewage discharge mechanism includes a frame (5) fixed on the pier (12), and the two ends of the frame (5) are respectively connected to the roller one (3) and the roller two (18) in a fixed-axis rotation manner, and the roller one (3) is located inside the sewage collection tank (4). The roller one (3) and the roller two (18) are connected by a conveyor belt (39), and the outer side surface of the conveyor belt (39) is fixed with a plurality of scrapers (10) at equal intervals along its length, and the conveyor belt (39) and the scrapers (10) are both hollow. A belt conveyor (26) is provided on the pier (12), and the belt conveyor is used to transport the mud and sewage dropped from the roller two (18). The shaft (24) is coaxially fixedly connected to the inner ring of the ratchet (9), and the outer ring of the ratchet (9) is connected to the roller two (18) through a sprocket assembly (25). The water pump assembly includes a pump barrel (8), a piston plate (38) is slidably connected to the pump barrel (8), and a connecting rod (33) is fixed on the piston plate (38), the connecting rod (33) is hinged to the lower end of the frame (22), the pump barrel (8) is fixedly rotatably connected to the pier (12), the ends of the pump barrel (8) are fixed and connected with a one-way valve (34) and a one-way valve (36), the one-way valve (34) is connected to the water on the outside of the gate plate (15) through a liquid pipe (35), the one-way valve (36) is connected to the water inlet end of the channel (6) opened on the dam foundation (11) through a liquid pipe (37), the water outlet end of the channel (6) is connected to the bottom of the sewage pool (4), the conducting direction of the one-way valve (34) points to the inside of the pump barrel (8), and the conducting direction of the one-way valve (36) points to the channel (6).

2. The barrage with water purification function according to claim 1, characterized in that: The two opposing surfaces of the two piers (12) are each provided with an arc-shaped groove (13), and the center of the arc-shaped groove (13) coincides with the center of the filter screen (14), and the two ends of the gate plate (15) are plugged and slidably connected in the two corresponding arc-shaped grooves (13).

3. The barrage with water purification function according to claim 2, characterized in that: A rack (20) in the shape of an arc is fixed on the outer arc surface of the gate plate (15), and a motor (17) and a vertical rod (21) are fixed on the pier seat (12), a worm (19) is connected to the vertical rod (21) for fixed axis rotation, and the output shaft of the motor (17) is transmission-connected to the worm (19), the worm (19) is meshed with the rack (20), and the center of the rack (20) is arranged to coincide with the center of the gate plate (15), a sealing strip (1) is fixed on the bottom edge of the inner arc surface of the gate plate (15), and the sealing strip (1) is in contact with the outer arc surface of the filter screen plate (14) and the solid baffle (2), and a sealing strip (16) is fixed on the side edge of the outer arc surface of the filter screen plate (14), and the sealing strip (16) is in contact with the inner arc surface of the gate plate (15).

4. The barrage with water purification function according to claim 1, characterized in that: The pier seat (12) is provided with a floating assembly (28) for automatically adjusting the length of the telescopic rod (27) according to the water level; The telescopic rod (27) includes a slide cylinder (2701) and a slide rod (2702) slidably connected to the slide cylinder (2701), the slide cylinder (2701) is fixedly connected to the sector tooth plate (23), and the slide rod (2702) is hinged to the buoyancy box (29); The floating assembly (28) includes a liquid storage cylinder (2803) fixed on the pier seat (12) and a slide groove (2805) opened on the pier seat (12), the liquid storage cylinder (2803) is slidably connected to the piston plate 2 (2802), the slide groove (2805) is slidably connected to the floating block (2801), and the floating block (2801) is fixedly connected to the piston plate 2 (2802) through the connecting rod 2 (2804), and the space inside the liquid storage cylinder (2803) located on the lower side of the piston plate 2 (2802) is connected to the inside of the slide cylinder (2701) through the liquid pipe 3 (2703).

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