A flood prevention box for water conservancy projects

Abstract

The present invention belongs to the technical field of farmland flood control equipment, and specifically discloses a water conservancy engineering flood control box, including a bottom box, wherein the interior of the bottom box is slidably connected with a floating plate, the top of the floating plate is fixedly connected with a top box, the interior of the top box is provided with a top box connection mechanism, the exterior of the bottom box is provided with a bottom box splicing mechanism, the interior bottom end of the top box is provided with a plurality of water inlet limiting mechanisms, the exterior bottom end of the bottom box is fixedly connected with a drainage filter mechanism, the top of the floating plate is provided with a plurality of water inlet holes, and the top box connection mechanism includes a water pressure movable frame, the exterior of the water pressure movable frame is slidably connected to the interior of the top box. Through the provision of the floating plate, when the amount of water is large, the floating plate will be driven to float, thereby driving the top box to move upward, and then the height of the flood control box can be increased, so that the height of the flood control box is increased, thereby preventing floods from entering farmland, avoiding damage to crops, and then avoiding economic losses, thereby improving the practicality of the flood control box.

Description

Technical Field

[0001] The invention belongs to the technical field of farmland flood prevention equipment, and specifically discloses a flood prevention box for a water conservancy project. Background Art

[0002] Planting flood control boxes in farmland is also a kind of water conservancy project. It is mainly used to temporarily store and transfer water when flood disasters occur to protect farmland from floods. Flood control boxes can help farmers effectively manage water resources in farmland during rainy or flood seasons, reduce crop losses caused by floods, and ensure the stability and sustainability of agricultural production. By using flood control boxes, farmers can quickly drain water from farmland when floods come, or use stored water resources for irrigation during droughts, thereby improving the disaster resistance of farmland.

[0003] The flood control boxes in the prior art are generally fixed boxes. Therefore, when the flood disaster is more serious, the flood will pass over the flood control box and enter the farmland, thus still causing damage to the crops, thereby causing economic losses and reducing the practicality of the flood control box. Summary of the invention

[0004] In view of this, the purpose of the present invention is to propose a flood control box for water conservancy projects to solve the problem that the flood control boxes in the prior art are generally fixed boxes. When the flood disaster is more serious, the flood will pass over the flood control box and enter the farmland, thereby causing economic losses and reducing the practicality of the flood control box.

[0005] To achieve the above objectives, the present invention provides a flood control box for a water conservancy project, comprising a bottom box, the interior of the bottom box being slidably connected to a floating plate, the top of the floating plate being fixedly connected to a top box, the interior of the top box being provided with a top box connecting mechanism, the exterior of the bottom box being provided with a bottom box splicing mechanism, the interior bottom end of the top box being provided with a plurality of water inlet limiting mechanisms, the exterior bottom end of the bottom box being fixedly connected to a drainage filtering mechanism, and the top of the floating plate being provided with a plurality of water inlet holes.

[0006] In the above technical solution, preferably, the top box connecting mechanism includes a water pressure movable frame, the outside of the water pressure movable frame is slidably connected to the inside of the top box, the side of the water pressure movable frame away from the water inlet limiting mechanism is fixedly connected with a connecting column, the side of the water pressure movable frame close to the water inlet limiting mechanism is fixedly connected with two stabilizing columns, the outer sleeve of the stabilizing column is provided with a tension spring, the inside of the top box is fixedly connected with two fixed plates, the side of the stabilizing column away from the water pressure movable frame is fixedly connected to the middle part of the fixed plate, and a connecting plug groove is provided on the side of the top box away from the connecting column.

[0007] In the above technical scheme, preferably, the bottom box splicing mechanism includes a fixed block, one side of the fixed block is fixedly connected to one side of the bottom box, a pushing spring is arranged at the top end inside the fixed block, both ends of the pushing spring are fixedly connected to sliding limit blocks, a side of the sliding limit block away from the pushing spring is fixedly connected to a clamping head, side slide grooves are provided on both sides of the fixed block, a side clamping frame is fixedly connected to one side of the bottom box away from the fixed block, two sliding bars are fixedly connected to the inner side of the side clamping frame, and a clamping groove is provided at the top end inside the sliding bar.

[0008] In the above technical solution, preferably, the water inlet limiting mechanism includes a fixed tube, the bottom of which is fixedly connected to the inner bottom end of the top box, the outside of the fixed tube is slidably connected to a top sleeve, the outer periphery of the top sleeve is provided with a plurality of water holes, the inner top of the top sleeve is fixedly connected to a pull spring, and the bottom of the pull spring is fixedly connected to the inner bottom end of the top box.

[0009] In the above technical scheme, preferably, the drainage filtering mechanism includes a drain pipe, a side of the drain pipe close to the top box is fixedly connected to the external bottom end of the bottom box, the interior of the drain pipe is fixedly connected with two fixing rods, a rotating shaft is rotatably connected between the two fixing rods, the outside of the rotating shaft is fixedly connected with an impeller, the end of the rotating shaft away from the bottom box is fixedly connected with a connecting rod, the interior of the connecting rod is fixedly connected with a clamping spring, the end of the clamping spring away from the impeller is fixedly connected with a limiting sliding block, the side of the limiting sliding block away from the impeller is fixedly connected with a connecting movable column, the side of the connecting movable column away from the limiting sliding block is fixedly connected with a brush head, the interior of the drain pipe is slidably connected with a filter plate, the side of the drain pipe away from the bottom box is threadedly connected with a threaded cover, and the side of the threaded cover close to the bottom box is fixedly connected with a top column.

[0010] In the above technical solution, preferably, a plurality of fixing ears are fixedly connected to the bottom end of the outer periphery of the bottom box, and the limit sliding block is slidably connected to the inside of the connecting rod.

[0011] In the above technical solution, preferably, a water inlet pipe is fixedly connected to a side of the outside of the bottom box away from the drainage filtering mechanism, and a water sealing cap is threadedly connected to a side of the water inlet pipe away from the bottom box.

[0012] In the above technical solution, preferably, the sliding limit block is slidably connected to the inner top end of the fixed block, and the outer sides of the two clamps pass through both sides of the fixed block.

[0013] In the above technical solution, preferably, a sealing ring is provided on the inner side of the threaded cover, and the connecting movable column is slidably connected to the inside of the connecting rod.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] 1. The present invention arranges a floating plate. When the amount of water is large, the floating plate will be driven to float, thereby driving the top box to move upward, thereby increasing the height of the flood control box, and enabling the raised top box to be automatically spliced ​​using a top box connecting mechanism, thereby increasing stability and increasing the height of the flood control box as the water level rises. Therefore, it can prevent floods from entering farmland, avoid damage to crops, and then avoid economic losses, thereby improving the practicality of the flood control box.

[0016] 2. The present invention is provided with a drainage and filtering mechanism. When irrigating farmland, the outflow of water can drive the impeller to rotate, so that the filter plate can be cleaned with a brush head, thereby preventing the filter plate from being blocked and filtering out larger impurities, thereby preventing the impurities from affecting the growth of crops. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 A perspective view of the present invention;

[0018] Figure 2 It is a structural schematic diagram of the connecting plug slot in the present invention;

[0019] Figure 3 It is a structural schematic diagram of the floating plate in the present invention;

[0020] Figure 4 It is a structural schematic diagram of the top box connection mechanism in the present invention;

[0021] Figure 5 It is a structural schematic diagram of the water inlet limiting mechanism in the present invention;

[0022] Figure 6 It is a structural schematic diagram of the filter plate in the present invention;

[0023] Figure 7 It is a structural schematic diagram of the top column in the present invention;

[0024] Figure 8 It is a schematic diagram of the structure of the limit sliding block in the present invention;

[0025] Fig. 9 It is a schematic structural diagram of the push spring in the present invention.

[0026] In the figure: 1, bottom box; 2, floating plate; 3, top box; 4, top box connecting mechanism; 401, water pressure movable frame; 402, connecting column; 403, stabilizing column; 404, tension spring; 405, fixing plate; 406, connecting plug slot; 5, bottom box splicing mechanism; 501, fixing block; 502, pushing spring; 503, sliding limit block; 504, clamping head; 505, side slide groove; 506, side clamping frame; 507, sliding bar; 508, clamping slot; 6, water inlet limiting mechanism; 601, fixed pipe; 602, top sleeve; 603, water hole; 604, pull spring; 7, drainage filter mechanism; 701, drainage pipe; 702, fixed rod; 703, rotating shaft; 704, impeller; 705, connecting rod; 706, tightening spring; 707, limit sliding block; 708, connecting movable column; 709, brush head; 710, filter plate; 711, threaded cover; 712, top column; 8, water inlet hole; 9, fixed ear; 10, water inlet pipe; 11, water sealing cover. DETAILED DESCRIPTION

[0027] In order to more clearly understand the above-mentioned objects, features and advantages of the present invention, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0028] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0029] like Figure 1-Figure 9 A flood control box for a water conservancy project shown in the figure comprises a bottom box 1, which provides a water storage space. A floating plate 2 is slidably connected to the interior of the bottom box 1. The floating plate 2 can float by using the water flow. A top box 3 is fixedly connected to the top of the floating plate 2. The top box 3 can increase the height of the bottom box 1, so as to block the height of the flood and store water. A top box connecting mechanism 4 is arranged inside the top box 3. The top box connecting mechanism 4 can improve the stability of the splicing after the top box 3 is raised, so as to prevent the flood water from entering the farmland. A bottom box splicing mechanism 5 is arranged outside the bottom box 1. The bottom box splicing mechanism 5 can play the role of pre-installing multiple bottom boxes 1 and It can maintain a uniform height, a plurality of water inlet limiting mechanisms 6 are arranged at the inner bottom end of the top box 3, a drainage filtering mechanism 7 is fixedly connected to the outer bottom end of the bottom box 1, the drainage filtering mechanism 7 can filter when draining water, a plurality of water inlet holes 8 are arranged on the top of the floating plate 2, the water inlet holes 8 can take in water, a water inlet pipe 10 is fixedly connected to the side of the outside of the bottom box 1 away from the drainage filtering mechanism 7, the water inlet pipe 10 is convenient for water inlet, and a water sealing cover 11 is threadedly connected to the side of the water inlet pipe 10 away from the bottom box 1, the water sealing cover 11 can block the water inlet pipe 10, so that the water inside the bottom box 1 will not be discharged.

[0030] The top box connection mechanism 4 includes a hydraulic movable frame 401, the outer portion of the hydraulic movable frame 401 is slidably connected to the inside of the top box 3, and a connecting column 402 is fixedly connected to the side of the hydraulic movable frame 401 away from the water inlet limiting mechanism 6. The hydraulic movable frame 401 can drive the connecting column 402 to move outward under the action of water pressure, and the side of the hydraulic movable frame 401 close to the water inlet limiting mechanism 6 is fixedly connected to two stabilizing columns 403, which can improve the stability of the hydraulic movable frame 401. The outer portion of the stabilizing column 403 The top box 3 is provided with a tension spring 404, and the interior of the top box 3 is fixedly connected with two fixing plates 405, which play a role in installation. The side of the stabilizing column 403 away from the water pressure movable frame 401 is fixedly connected to the middle of the fixing plate 405, and the side of the top box 3 away from the connecting column 402 is provided with a connecting plug groove 406, and the connecting column 402 can be inserted into the inside of the connecting plug groove 406, so as to improve the stability of the top box 3 after it is raised. When a flood disaster occurs, the water sealing cover 11 is unscrewed, and when the flood enters the bottom through the water inlet pipe 10 The interior of the box 1 can prevent floods from entering the farmland. When the flood is too large, the water entering the bottom box 1 will push the float 2 upward, and then the buoyancy of the water can be used to drive the top box 3 to move upward, thereby increasing the height of the flood prevention box and blocking more water. At the same time, as the amount of water entering the bottom box 1 increases, the water flow will enter the interior of the top box 3 through the water inlet hole 8. When the top box 3 moves out of the bottom box 1, the water pressure in the top box 3 will push the water pressure movable frame 401 to move to the outside of the top box 3. Thereby, the connecting column 402 can be driven to move toward the outside of the top box 3, and then the tension spring 404 can be stretched. After the connecting column 402 is extended, it can be inserted into the connecting plug groove 406 of another top box 3, so that the spliced ​​bottom box 1 can be more stable. When the water level drops, the water pressure movable frame 401 is pulled toward the inside of the top box 3 under the reaction of the tension spring 404, so that the connecting column 402 can be reset, and at this time the top box 3 can be lowered to the inside of the bottom box 1 to complete the automatic storage of the equipment.

[0031] The bottom box splicing mechanism 5 includes a fixed block 501, one side of the fixed block 501 is fixedly connected to one side of the bottom box 1, a push spring 502 is arranged at the top of the fixed block 501, both ends of the push spring 502 are fixedly connected to a sliding limit block 503, the push spring 502 can provide power for the reset of the sliding limit block 503, the side of the sliding limit block 503 away from the push spring 502 is fixedly connected to a clamping head 504, both sides of the fixed block 501 are provided with side sliding grooves 505, the bottom box 1 is away from the fixed block 501 A side card frame 506 is fixedly connected to one side of the bottom box 1, and two sliding bars 507 are fixedly connected to the inner side of the side card frame 506. The sliding bar 507 can slide inside the side slide groove 505, so as to increase stability. A card slot 508 is provided at the top of the inner side of the sliding bar 507, and the card head 504 can be engaged with the card slot 508, so as to provide stability for the engagement between the two bottom boxes 1, and can make a sound and vibration to remind the staff to splice in place. The sliding limit block 503 is slidably connected to the fixed block 501 The outer sides of the two clamping heads 504 penetrate the two sides of the fixed block 501. When multiple bottom boxes 1 are pre-installed, first insert the bottom of one of the side clamping frames 506 into the outside of the fixed block 501 on another bottom box 1, and slide the sliding bar 507 into the inside of the side sliding groove 505. When the outside of the sliding bar 507 touches the outside of the clamping head 504, the clamping head 504 can be squeezed into the inside of the fixed block 501, thereby driving the sliding limit block 503 to move to the middle, and then The sliding limit block 503 can be used to compress the push spring 502. When the slot 508 on the sliding bar 507 reaches the clamping head 504, the sliding limit block 503 can be pushed to move to both sides under the action of the pushing spring 502, thereby driving the clamping head 504 to move to both sides, so that the clamping head 504 is engaged in the slot 508 and makes a sound and vibration when engaging, indicating that the engagement is completed. At the same time, it can also remind the staff that the splicing between the two boxes is completed and remains parallel.

[0032] The water inlet limiting mechanism 6 includes a fixed tube 601, and a plurality of smaller holes are provided on the inner wall of the fixed tube 601 to facilitate the outflow of liquid. The bottom of the fixed tube 601 is fixedly connected to the inner bottom end of the top box 3. The outer side of the fixed tube 601 is slidably connected to a top sleeve 602. The outer periphery of the top sleeve 602 is provided with a plurality of water holes 603. The water holes 603 facilitate the outflow of water. The inner top of the top sleeve 602 is fixedly connected to a pull spring 604. The bottom of the pull spring 604 is fixedly connected to the inner side of the top box 3. At the bottom, when there is too much water in the space of the bottom box 1, the water will enter the fixed pipe 601 through the water inlet hole 8, so that after the water pressure reaches a certain level, it can overcome the elasticity of the pull spring 604 and lift up the top sleeve 602. When the water hole 603 moves beyond the top of the fixed pipe 601, the liquid flow rate can be accelerated, and the water flow can be discharged into the interior of the top box 3. When draining, the water can flow into the top sleeve 602 through the water hole 603 and into the interior of the bottom box 1, thereby achieving the purpose of draining water.

[0033] The drainage filtering mechanism 7 includes a drainage pipe 701, which can drain water. The side of the drainage pipe 701 close to the top box 3 is fixedly connected to the outer bottom end of the bottom box 1. The interior of the drainage pipe 701 is fixedly connected with two fixing rods 702, which play a role of installation. A rotating shaft 703 is rotatably connected between the two fixing rods 702, and the rotating shaft 703 has the function of a mounting structure. The outside of the rotating shaft 703 is fixedly connected with an impeller 704, and the impeller 704 can rotate under the action of water flow. The end of the rotating shaft 703 away from the bottom box 1 is fixedly connected with a connecting rod 7 05, the interior of the connecting rod 705 is fixedly connected with a tightening spring 706, and the end of the tightening spring 706 away from the impeller 704 is fixedly connected with a limited sliding block 707, and the limited sliding block 707 plays a limiting role. The side of the limited sliding block 707 away from the impeller 704 is fixedly connected with a connecting movable column 708, and the connecting movable column 708 plays a connecting role. The side of the connecting movable column 708 away from the limiting sliding block 707 is fixedly connected with a brush head 709, and the brush head 709 plays a cleaning role. The interior of the drain pipe 701 is slidably connected with a filter plate 710, and the filter plate 710 can play The drain pipe 701 has a filtering effect. The side of the drain pipe 701 away from the bottom box 1 is threadedly connected with a threaded cover 711. The threaded cover 711 plays the role of blocking the drain pipe 701. The side of the threaded cover 711 close to the bottom box 1 is fixedly connected with a top column 712. The top column 712 can block the filter plate 710. The bottom end of the outer periphery of the bottom box 1 is fixedly connected with a plurality of fixing ears 9. The limit sliding block 707 is slidably connected to the inside of the connecting rod 705. The inner side of the threaded cover 711 is provided with a sealing ring to prevent liquid from flowing out. The connecting movable column 708 is slidably connected to the inside of the connecting rod 705. When the bottom box 1 and the top box 3 are inside, When the stored water in the part is released, the water flows through the drain pipe 701, causing the impeller 704 to rotate, thereby driving the rotating shaft 703 to rotate. When the rotating shaft 703 rotates, it can drive the connecting rod 705 to rotate. After the connecting rod 705 rotates, it can drive the connecting movable column 708 to rotate. After the connecting movable column 708 rotates, it can drive the brush head 709 to rotate, so that the brush head 709 can be used to clean the filter plate 710 to prevent the filter plate 710 from being blocked. At the same time, the filtering of the filter plate 710 can prevent too many and larger impurities from entering the farmland.

[0034] Working principle: When a flood disaster occurs, the water sealing cover 11 is unscrewed. When the flood enters the bottom box 1 through the water inlet pipe 10, it can prevent the flood from entering the farmland. When the flood is too large, the water entering the bottom box 1 will push the floating plate 2 upward, and then the buoyancy of the water can be used to drive the top box 3 upward, so that the height of the flood prevention box can be increased and more water can be blocked. At the same time, as the amount of water entering the bottom box 1 increases, the water flow will enter the top box 3 through the water inlet hole 8. When the top box 3 moves out of the bottom box 1, the water pressure in the top box 3 will push the water pressure The movable frame 401 moves toward the outside of the top box 3, thereby driving the connecting column 402 to move toward the outside of the top box 3, and then the tension spring 404 can be stretched. After the connecting column 402 is extended, it can be inserted into the connecting plug groove 406 of another top box 3, so that the bottom boxes 1 spliced ​​together can be more stable. When the water level drops, the hydraulic movable frame 401 is pulled toward the inside of the top box 3 under the reaction of the tension spring 404, so that the connecting column 402 can be reset, and at this time the top box 3 can be lowered into the inside of the bottom box 1 to complete the automatic storage of the equipment;

[0035] When multiple bottom boxes 1 are pre-installed, first insert the bottom of one side card frame 506 into the outside of the fixed block 501 on the other bottom box 1, and slide the sliding bar 507 into the inside of the side sliding groove 505, and when the outside of the sliding bar 507 touches the outside of the clamping head 504, the clamping head 504 can be squeezed toward the inside of the fixed block 501, thereby driving the sliding limit block 503 to move toward the middle, and then the sliding limit block 503 can be used to compress the pushing spring 502, and when the clamping groove 508 on the sliding bar 507 reaches the clamping head 504, the sliding limit block 503 can be pushed to move to both sides under the action of the pushing spring 502, thereby driving the clamping head 504 to move to both sides, so that the clamping head 504 is clamped in the inside of the clamping groove 508, and the sound and vibration of the clamping are emitted, indicating that the clamping is completed, and it can also remind the staff that the splicing between the two boxes is completed and kept parallel;

[0036] When the water in the bottom box 1 and the top box 3 is released, the water flows through the drain pipe 701, causing the impeller 704 to rotate, thereby driving the rotating shaft 703 to rotate. When the rotating shaft 703 rotates, it can drive the connecting rod 705 to rotate. After the connecting rod 705 rotates, it can drive the connecting movable column 708 to rotate. After the connecting movable column 708 rotates, it can drive the brush head 709 to rotate, so that the brush head 709 can be used to clean the filter plate 710 to prevent the filter plate 710 from being blocked. At the same time, the filtration of the filter plate 710 can prevent too many and large impurities from entering the farmland.

[0037] When there is too much water in the space of the bottom box 1, the water will enter the fixed pipe 601 through the water inlet hole 8, so that when the water pressure reaches a certain level, it can overcome the elasticity of the pull spring 604 and lift up the top sleeve 602. When the water hole 603 moves beyond the top of the fixed pipe 601, the liquid flow rate can be accelerated, and the water flow can be discharged into the interior of the top box 3. When draining, the water can flow into the top sleeve 602 through the water hole 603 and into the interior of the bottom box 1, thereby achieving the purpose of draining water.

[0038] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions only describe the principles of the present invention. The present invention may be subject to various changes and improvements without departing from the spirit and scope of the present invention. These changes and improvements fall within the scope of the present invention. The scope of protection claimed by the present invention is defined by the attached claims and their equivalents.

Claims

1. A flood control box for a water conservancy project, comprising a bottom box (1), characterized in that: The bottom box (1) is slidably connected to a floating plate (2), the top of the floating plate (2) is fixedly connected to a top box (3), a top box connecting mechanism (4) is provided inside the top box (3), a bottom box splicing mechanism (5) is provided outside the bottom box (1), a plurality of water inlet limiting mechanisms (6) are provided at the bottom end of the top box (3), a drainage filtering mechanism (7) is fixedly connected to the bottom end of the bottom box (1), and a plurality of water inlet holes (8) are provided on the top of the floating plate (2); The top box connection mechanism (4) comprises a water pressure movable frame (401), the outside of the water pressure movable frame (401) is slidably connected to the inside of the top box (3), a side of the water pressure movable frame (401) away from the water inlet limiting mechanism (6) is fixedly connected to a connecting column (402), a side of the water pressure movable frame (401) close to the water inlet limiting mechanism (6) is fixedly connected to two stabilizing columns (403), the outside of the stabilizing columns (403) is sleeved with a tension spring (404), the inside of the top box (3) is fixedly connected to two fixing plates (405), a side of the stabilizing column (403) away from the water pressure movable frame (401) is slidably connected to the middle of the fixing plate (405), and a side of the top box (3) away from the connecting column (402) is provided with a connecting plug groove (406).

2. A flood control box for water conservancy projects according to claim 1, characterized in that: The bottom box splicing mechanism (5) comprises a fixed block (501), one side of the fixed block (501) is fixedly connected to one side of the bottom box (1), a pushing spring (502) is arranged at the top end of the fixed block (501), both ends of the pushing spring (502) are fixedly connected to sliding limit blocks (503), a side of the sliding limit block (503) away from the pushing spring (502) is fixedly connected to a clamping head (504), side sliding grooves (505) are provided on both sides of the fixed block (501), a side clamping frame (506) is fixedly connected to the side of the bottom box (1) away from the fixed block (501), two sliding bars (507) are fixedly connected to the inner side of the side clamping frame (506), and a clamping groove (508) is provided at the top end of the inner side of the sliding bar (507).

3. A flood control box for water conservancy projects according to claim 1, characterized in that: The water inlet limiting mechanism (6) comprises a fixed tube (601), the bottom of the fixed tube (601) is fixedly connected to the inner bottom end of the top box (3), the outside of the fixed tube (601) is slidably connected to a top sleeve (602), the outer periphery of the top sleeve (602) is provided with a plurality of water holes (603), the inner top of the top sleeve (602) is fixedly connected to a pull spring (604), and the bottom of the pull spring (604) is fixedly connected to the inner bottom end of the top box (3).

4. A flood control box for water conservancy projects according to claim 1, characterized in that: The drainage filtering mechanism (7) comprises a drainage pipe (701); a side of the drainage pipe (701) close to the top box (3) is fixedly connected to the outer bottom end of the bottom box (1); two fixed rods (702) are fixedly connected to the inside of the drainage pipe (701); a rotating shaft (703) is rotatably connected between the two fixed rods (702); an impeller (704) is fixedly connected to the outside of the rotating shaft (703); an end of the rotating shaft (703) away from the bottom box (1) is fixedly connected to a connecting rod (705); a tightening spring (706) is fixedly connected to the inside of the connecting rod (705); and the tightening spring (706) is fixedly connected to the inside of the connecting rod (705). One end of the tightening spring (706) away from the impeller (704) is fixedly connected to a limit sliding block (707); a side of the limit sliding block (707) away from the impeller (704) is fixedly connected to a connecting movable column (708); a side of the connecting movable column (708) away from the limit sliding block (707) is fixedly connected to a brush head (709); a filter plate (710) is slidably connected inside the drain pipe (701); a threaded cover (711) is threadedly connected to a side of the drain pipe (701) away from the bottom box (1); and a top column (712) is fixedly connected to a side of the threaded cover (711) close to the bottom box (1).

5. A flood control box for water conservancy projects according to claim 4, characterized in that: A plurality of fixing ears (9) are fixedly connected to the bottom end of the outer periphery of the bottom box (1), and the position-limiting sliding block (707) is slidably connected to the inside of the connecting rod (705).

6. A flood control box for water conservancy projects according to claim 1, characterized in that: A water inlet pipe (10) is fixedly connected to a side of the outside of the bottom box (1) away from the drainage filter mechanism (7), and a water sealing cover (11) is threadedly connected to a side of the water inlet pipe (10) away from the bottom box (1).

7. A flood control box for water conservancy projects according to claim 2, characterized in that: The sliding limit block (503) is slidably connected to the inner top end of the fixed block (501), and the outer sides of the two clamping heads (504) penetrate through the two sides of the fixed block (501).

8. A flood control box for water conservancy projects according to claim 4, characterized in that: A sealing ring is provided on the inner side of the threaded cover (711), and the connecting movable column (708) is slidably connected to the inside of the connecting rod (705).

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