Water conservancy project drainage device for rainstorm weather

Abstract

The invention discloses a water conservancy project drainage device for rainstorm weather, and belongs to the technical field of water conservancy project drainage, the water conservancy project drainage device comprises a water suction pump, a driving assembly, a filtering part and a floating part, through collaborative design of the floating part and the filtering part, a floating plate utilizes an internal hollow part to provide buoyancy, and the water suction pump is driven by the driving assembly; the filtering part is stably located in the area below the water surface and above the water bottom by matching with the balancing weight, a water bottom silt deposition layer is directly avoided, water bottom silt can be prevented from being rolled up due to suction force during water pumping, silt entering the water suction pump is reduced, abrasion of core components such as an impeller and a pump shell is reduced, and the service life of the water suction pump is prolonged; meanwhile, the filtering part synchronously moves along with water level rising and falling, idling of a water suction pump caused by the fact that the filtering part is higher than the water surface after the water level falls is avoided, overheating damage of a motor is prevented, continuity of drainage operation is guaranteed, an inclined face is arranged above the floating plate, rainwater on the surface of the floating plate can be rapidly drained in rainstorm, and sinking caused by the fact that the weight of the floating plate is increased due to rainwater accumulation is avoided; the buoyancy stability of the floating part is ensured.

Description

Technical Field

[0001] This invention belongs to the field of water conservancy engineering drainage technology, specifically, it relates to a water conservancy engineering drainage device for rainstorm weather. Background Technology

[0002] Drainage in water conservancy projects is an important component of the water conservancy system. Its core function is to regulate surface runoff, groundwater levels, and regional water balance through artificially constructed facilities and technologies, thereby preventing and mitigating floods, soil salinization, and other problems. At the same time, it provides a suitable hydrological environment for agricultural production, urban construction, and ecological protection. Its essence is "active intervention in the natural movement of water" to achieve goals such as "drainage, waterlogging, and salinity removal." It is a key engineering measure to ensure the stability of human production, life, and ecosystems.

[0003] Although the design of water conservancy projects (such as reservoirs, dikes, sluices, pumping stations, irrigation canals, etc.) takes into account a certain recurrence period of rainstorms, the short-term heavy rainfall caused by rainstorms can lead to a sharp increase in water volume in the basin. If drainage is not carried out in time, it may exceed the carrying capacity limit of the project and cause irreversible damage. The significant characteristics of rainstorms are "concentrated rainfall and rapid runoff". In a short period of time, surface runoff will quickly converge into floods. If water conservancy projects do not actively drain and guide the water, the flood will stagnate and spread in the area. Therefore, drainage devices are needed to drain water.

[0004] Chinese utility model patent CN216108854U discloses a waterproof drainage device for water conservancy projects, including a base plate and a water pump. Multiple support columns are fixedly connected to the bottom of the base plate, and a cylinder is fixedly connected to the top of the base plate. The output end of the cylinder passes through the base plate and is fixedly connected to a movable component. A waterproof cover is fixedly connected to the top of the base plate, with an inlet at one end of the waterproof cover. A snap-fit ​​component is connected to the inlet, which is connected to a water filter tank via an inlet pipe. An L-shaped filter screen is fixedly connected inside the water filter tank. A push plate is slidably connected to the inner top wall of the water filter tank. Cleaning brushes are fixedly connected to both ends of the push plate near the L-shaped filter screen. A movable handle is fixedly connected to the top of the push plate. Movable openings are provided on both the water filter tank and the waterproof cover. The water filter tank is connected to the water pump via a water pumping pipe, and the water pump is connected to the outside via a drain pipe.

[0005] Although the drainage device can filter and clean impurities in the water, the inlet of existing water pumps is often connected to a flexible hose with a counterweight attached to it so that it is submerged in water. In water conservancy construction areas, the bottom of the water often accumulates a large amount of silt, gravel and other impurities. When the inlet head pumps water, the high-speed flow of water into the inlet will create strong local water flow disturbance, which can easily pick up the silt at the bottom of the water and suck it into the pump body. After the silt enters the pump body, it will aggravate the wear of core components such as impeller and pump casing, shorten the service life of the water pump, and increase the cost of equipment maintenance and replacement. Summary of the Invention

[0006] The purpose of this section is to outline some aspects of embodiments of the present invention and to briefly describe some preferred embodiments. Simplifications or omissions may be made in this section, as well as in the abstract and title of this application, to avoid obscuring the purpose of these documents; however, such simplifications or omissions should not be construed as limiting the scope of the invention.

[0007] To address the problem mentioned in the background art that existing water pumps often have a flexible hose connected to the inlet, with a counterweight attached to the hose and submerged in water, and that the bottom of the water in the construction area of ​​water conservancy projects often accumulates a large amount of silt, gravel, and other impurities, when the inlet head pumps water, the high-speed water flow into the inlet will create strong local water flow disturbance, which can easily pick up the silt from the bottom and suck it into the pump body. After the silt enters the pump body, it will aggravate the wear of core components such as the impeller and pump casing, shorten the service life of the water pump, and increase the cost of equipment maintenance and replacement, the present invention adopts the following technical solution.

[0008] A drainage device for water conservancy projects during rainstorms includes a water pump and a drive assembly for driving the water pump. The water pump is provided with an outlet and an inlet. A hose is connected to the inlet, and a filter is detachably connected to the end of the hose. A floating part is provided outside the filter, which causes the filter to float and be located below the water surface. The floating part includes a floating plate, which is hollow inside and has a connector at its upper end. The hose is detachably connected to the connector. The filter is installed at the bottom of the floating plate and communicates with the connector and the hose.

[0009] Preferably, the floating board has a hollow section inside, a second curved section and a first curved section. The first curved section divides the space of the floating board into two parts. The bottom of the floating board is a contact section. The second curved section is positioned higher than the contact section. An inclined surface is provided on the top of the floating board, which guides rainwater to the surrounding area.

[0010] Preferably, the filter section includes a water pump pipe, the outer wall of which is provided with multiple water inlet holes, and a counterweight is detachably connected to the bottom of the water pump pipe.

[0011] Preferably, a filter cylinder is provided on the outside of the water pumping pipe. The filter cylinder rotates when the water pumping pipe pumps water. Sealing plates are fixedly connected to the outer walls on both sides of the water pumping pipe in the water inlet area. The sealing plates are attached to the inner wall of the filter cylinder.

[0012] Preferably, a rotating base plate is rotatably connected to the bottom of the pumping pipe, and a connecting plate is provided between the rotating base plate and the filter cylinder. A transmission rod that extends through the bottom of the pumping pipe is fixedly connected to the top inner side of the rotating base plate. A water turbine blade is detachably connected to the upper end of the transmission rod. A counterweight is detachably connected to the bottom of the rotating base plate. The water turbine blade rotates when pumping water and drives the rotating base plate to rotate. The rotating base plate drives the external filter cylinder to rotate through the connecting plate.

[0013] Preferably, a second scraper is detachably connected to the bottom of the floating plate. The second scraper is in contact with the outer wall of the filter cylinder. When the filter cylinder rotates during water pumping, the second scraper cleans the outer wall of the filter cylinder.

[0014] Preferably, the bottom of the water pipe is provided with flanges on both sides of the sealing plate, and multiple through holes are provided above the flanges. A first scraper is fixedly connected to the outer wall of the counterweight. The first scraper fits against the outside of the through holes. The rotating base plate rotates, causing the counterweight to rotate, which in turn causes the first scraper to rotate. When the water surface sways, causing the filter section to swing up and down, water enters through the through holes and is discharged from the filter cylinder. The rotating base plate rotates, causing the counterweight to rotate, which in turn causes the first scraper to rotate, cleaning the impurities remaining on the through holes and preventing impurities from clogging the through holes.

[0015] Preferably, it also includes a support plate and a rotating plate. The outer wall of the connector is provided with multiple mounting grooves. The support plate is installed inside the mounting groove. Each support plate has a rotating plate at its end, and the rotating plate extends beyond the edge of the floating part.

[0016] Preferably, a sliding chamber is provided inside the support plate near the rotating plate. A piston plate is slidably connected inside the sliding chamber. A limiting head that extends out of the sliding chamber is fixedly connected to the outer wall of the piston plate. A notch is provided at the end of the support plate. The rotating plate is rotatably connected to the inside of the notch. A connecting ring is provided between the rotating plate and the limiting head. A connecting rope is provided between the two connecting rings. A rotating wheel is rotatably connected to the end of the rotating plate. The sealed environment inside the sliding chamber causes the rotating plate to rotate after contacting the inner wall of the pit. The connecting rope pulls the sliding rod and piston plate outward. The piston plate compresses the air inside the sliding chamber and generates a rebound force. The rebound force causes the rotating plate to rotate, so that the filter part is away from the inner wall of the pit.

[0017] Preferably, the device also includes a mounting frame, with a pair of opposing casters rotatably connected to one side of the bottom of the mounting frame, and opposing support feet on the other side of the bottom of the mounting frame. A handle is provided on one side of the casters, and the water pump and drive assembly are mounted on the mounting frame.

[0018] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0019] 1. In this invention, through the coordinated design of the floating part and the filtering part, the floating plate uses its internal hollow part to provide buoyancy, and with the help of the counterweight, the filtering part is stably located in the area below the water surface and above the bottom, directly avoiding the sediment layer at the bottom of the water. When pumping water, it can avoid the suction force from stirring up the sediment at the bottom of the water, reducing the amount of sediment entering the water pump, reducing the wear of core components such as impeller and pump casing, and extending the service life of the water pump. At the same time, the filtering part moves synchronously with the rise and fall of the water level, preventing the water pump from running dry when the water level drops and the filtering part is above the water surface, preventing the motor from overheating and being damaged, and ensuring the continuity of drainage operations.

[0020] 2. In this invention, the filter cylinder outside the water inlet pipe can perform preliminary filtration of the incoming water. When pumping water, the water flow drives the water turbine blades to rotate. Through the linkage of the transmission rod, rotating base plate, and connecting plate, the filter cylinder rotates synchronously. After the filter cylinder area with attached impurities leaves the water inlet hole, the impurities can be washed away by the fluctuation of the rainwater flow. At the same time, the second scraper at the bottom of the floating plate adheres to the outer wall of the filter cylinder and scrapes away residual impurities as the filter cylinder rotates. There is no need to stop the machine for manual cleaning, avoiding drainage interruption due to cleaning the filter structure and improving drainage efficiency. In addition, the sealing plate can prevent turbulence when pumping water from the water inlet hole, ensuring that the water flow can effectively wash away impurities in the filter cylinder. The through hole enhances the water flow flushing effect when the filter part swings up and down, further optimizing the unclogging ability. At the same time, the first scraper rotates with the counterweight to clean impurities in the through hole, avoiding blockage of the through hole and affecting the flushing function.

[0021] 3. In this invention, in the scenario of foundation pit drainage, the anti-adhesion component on the outer wall of the connector can effectively limit the position of the filter part: the rotating plate extends beyond the edge of the floating part, which can physically prevent the filter part from approaching the inner wall of the foundation pit due to wind and water flow; and after the rotating plate contacts the inner wall of the foundation pit, it will pull the piston plate in the sliding chamber through the connecting rope. The piston plate compresses the air in the sliding chamber to generate a rebound force, causing the rotating plate to rotate and drive the filter part away from the inner wall of the foundation pit, avoiding hard collision between the filter part and the inner wall of the foundation pit and damaging the support structure, thus ensuring the safety of foundation pit construction; at the same time, the rotating wheel at the end of the rotating plate can reduce friction with the inner wall of the foundation pit, further reducing the risk of collision damage, and the posture of the rotating plate can be adjusted by replacing the connecting rope of different lengths to adapt to drainage scenarios with different foundation pit depths and inner wall slopes, thus improving the versatility of the device.

[0022] 4. In this invention, the first curved part on the floating plate separates the internal space, and the second curved part is positioned higher than the bottom contact part. When the water surface shakes violently during heavy rain, the second curved parts on both sides can provide additional support to limit the swaying angle between the floating part and the filter part, preventing the filter part from flipping over and exceeding the water surface. When heavy rain hits the top of the floating plate, the floating part moves downward, and the amount of air sealed between the first curved part, the second curved part, and the contact part increases, which can adaptively increase buoyancy and prevent the filter part from sinking due to the pressure of heavy rain, ensuring that the filter part is always in an effective water pumping position.

[0023] 5. In this invention, an inclined surface is provided above the floating board, which can quickly drain the rainwater on the surface of the floating board during heavy rain, avoiding the accumulation of rainwater that increases the weight of the floating board and causes it to sink, ensuring the buoyancy stability of the floating part, and further improving the operational reliability of the device in harsh rainy environments. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of a drainage device for water conservancy projects used in rainstorm weather according to the present invention;

[0025] Figure 2 This is a bottom view of the drainage device in this invention.

[0026] Figure 3 This is a schematic diagram of the water inlet assembly structure in this invention;

[0027] Figure 4 This is a schematic cross-sectional view of one side of the water inlet assembly in this invention;

[0028] Figure 5 This is a schematic cross-sectional view of the water inlet assembly on the other side of the present invention;

[0029] Figure 6 This is a bottom view of the water inlet assembly in this invention;

[0030] Figure 7 This is a schematic diagram of the exploded structure of the water inlet assembly in this invention;

[0031] Figure 8 In this invention Figure 7 Enlarged structural diagram at point A in the middle;

[0032] Figure 9 This is a schematic diagram of the anti-adhesion component structure in this invention;

[0033] Figure 10 This is a cross-sectional view of the anti-adhesion component in this invention.

[0034] The correspondence between the labels and component names in the attached figures is as follows:

[0035] 100. Mounting frame; 101. Water outlet; 102. Casters; 103. Drive assembly; 104. Water pump; 105. Support feet; 106. Water inlet; 107. Handle;

[0036] 200. Floating part; 201. Floating plate; 202. Connector; 203. Mounting groove; 204. Hollow part; 205. First curved part; 206. Second curved part; 207. Inclined surface; 209. Contact part;

[0037] 300. Filter section; 301. Pumping pipe; 302. Sealing plate; 303. Counterweight; 304. Water inlet; 305. Transmission rod; 306. Water impeller; 307. Filter cylinder; 308. Connecting plate; 309. Rotating base plate; 310. First scraper; 311. Through hole; 312. Second scraper;

[0038] 400. Support plate; 401. Rotating plate; 402. Piston plate; 403. Sliding rod; 404. Limiting head; 405. Sliding chamber; 406. Rotating wheel; 407. Connecting rope; 408. Connecting ring. Detailed Implementation

[0039] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0040] Many specific details are set forth in the following description in order to provide a full understanding of the invention. However, the invention may also be practiced in other ways different from those described herein, and those skilled in the art can make similar extensions without departing from the spirit of the invention. Therefore, the invention is not limited to the specific embodiments disclosed below.

[0041] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in different places throughout this specification does not necessarily refer to the same embodiment, nor is it a single or selective embodiment that mutually excludes other embodiments. The present invention provides the following embodiments.

[0042] like Figure 1 as well as Figure 2The diagram shows a preferred embodiment of a drainage device for a water conservancy project during heavy rain. This embodiment includes a mounting frame 100. One side of the bottom of the mounting frame 100 is rotatably connected to opposing casters 102. The other side of the bottom of the mounting frame 100 is provided with opposing support feet 105. One side of each caster 102 has a handle 107. A drive assembly 103 is detachably connected to one side of the interior of the mounting frame 100, and a water pump 104 is detachably connected to the other side. The drive assembly 103 drives the water pump 104 to pump water. The water pump 104 has an outlet 101 and an inlet 106. A hose is connected to the inlet 106, and a filter 300 is detachably connected to the end of the hose. A float 200 is provided outside the filter 300. In this embodiment, during use, one side of the mounting frame 100 is lifted by holding the handle 107 and moved to a suitable position by the moving wheels 102. The device is supported by the support feet 105 in conjunction with the moving wheels 102. The hose is connected to the filter section 300 and the water inlet section 106. Then, the filter section 300 is thrown into the water surface that needs to be pumped. The support plate 400 makes the filter section 300 float below the water surface. Then, the drive assembly 103 drives the water pump 104 to draw water through the filter section 300 and discharge it from the water outlet section 101. Because the filter section 300 floats below the water surface, it can avoid stirring up the mud and sand at the bottom of the water when the filter section 300 generates suction, which can reduce the risk of the filter section 300 being blocked. It can also move with the rise and fall of the water level to avoid the water pump 104 running dry and being damaged when it is above the water surface.

[0043] like Figure 3 As shown, this is a schematic diagram of the water inlet assembly structure in this embodiment. The floating part 200 includes a floating plate 201, which is hollow inside and has a connector 202 at its upper end. The hose is detachably connected to the connector 202. The filter part 300 is installed at the bottom of the floating plate 201 and communicates with the connector 202 and the hose. The filter part 300 includes a water suction pipe 301, which has multiple water inlet holes 304 on its outer wall. A counterweight 303 is detachably connected to the bottom of the water suction pipe 301. In this embodiment, the floating plate 201 allows the filter part 300 to float below the water surface, the water inlet holes 304 allow water to be drawn in, and the counterweight 303 makes the filter part 300 more stable in the water.

[0044] like Figure 4As shown, this is a cross-sectional view of one side of the water inlet assembly in this embodiment. The float plate 201 has a hollow portion 204 inside. The float plate 201 has a second curved portion 206 and a first curved portion 205. The first curved portion 205 divides the space of the float plate 201 into two parts. The bottom of the float plate 201 is a contact portion 209. The second curved portion 206 is positioned higher than the contact portion 209. In this embodiment, buoyancy is generated by the contact portion 209 contacting the water surface, causing the filter section 300 to float. The second curved portion 206 helps to prevent significant water surface agitation during heavy rain. When the floating plate 201 sways with the water surface, the second curved portions 206 on both sides provide a certain support force after contacting the water surface, thereby limiting the swaying angle of the floating portion 200 and the filter portion 300, preventing the filter portion 300 from overturning and exceeding the water surface. When heavy rain hits the top of the floating plate 201, the floating portion 200 moves downward. At this time, a certain amount of air is sealed inside the first curved portion 205 between the second curved portion 206 and the contact portion 209, thereby increasing the buoyancy of the floating portion 200, so that the filter portion 300 will not sink or overturn even in heavy rain.

[0045] like Figure 5 As shown, this is a cross-sectional view of the water inlet assembly in this embodiment. A filter cylinder 307 is installed outside the water pump pipe 301. A rotating base plate 309 is rotatably connected to the bottom of the water pump pipe 301. A connecting plate 308 is provided between the rotating base plate 309 and the filter cylinder 307. A transmission rod 305 extending through the bottom of the water pump pipe 301 is fixedly connected to the top inner side of the rotating base plate 309. A water turbine blade 306 is detachably connected to the upper end of the transmission rod 305. A counterweight 303 is detachably connected to the bottom of the rotating base plate 309. In this embodiment... The filter cartridge 307 filters the water drawn in through the inlet hole 304. The water impeller 306 rotates during water pumping, which in turn drives the rotating base plate 309 to rotate. The rotating base plate 309 drives the external filter cartridge 307 to rotate through the connecting plate 308. This allows the filter cartridge 307 at the location where impurities are attached to rotate away from the inlet hole 304. Combined with the water fluctuations during heavy rain, the impurities on the filter cartridge 307 can be washed away, eliminating the need for manual cleaning of the filtered impurities on the filter cartridge 307 and making the drainage efficiency higher.

[0046] like Figure 5 As shown, an inclined surface 207 is provided above the floating plate 201. In this embodiment, by setting the inclined surface 207, water above the floating plate 201 can be quickly discharged in the event of heavy rain, thus avoiding the increase in the weight of the floating plate 201 and causing it to be submerged.

[0047] like Figure 6As shown, this is a bottom view of the water inlet assembly in this embodiment. The bottom of the float plate 201 is detachably connected to a second scraper 312. The second scraper 312 is attached to the outer wall of the filter cylinder 307. In this embodiment, when water is pumped, the filter cylinder 307 rotates in conjunction with the cleaning of the second scraper 312 and the rinsing of water, which can make the cleaning effect better.

[0048] like Figure 7 As shown, this is an exploded structural diagram of the water inlet assembly in this embodiment. The water pumping pipe 301 is fixedly connected to the outer walls on both sides of the water inlet hole 304 area with sealing plates 302. The sealing plates 302 are attached to the inner wall of the filter cylinder 307. In this embodiment, the sealing plates 302 can prevent water from being sucked into the side away from the water inlet hole 304 when pumping water, thus avoiding turbulence and preventing water from washing away impurities on the filter cylinder 307.

[0049] like Figure 7 as well as Figure 8 As shown, the bottom of the water pump pipe 301 is provided with flanges on both sides of the sealing plate 302. Multiple through holes 311 are provided above the flanges. In this embodiment, by providing through holes 311, when the water surface is shaken and the filter part 300 swings up and down, water can enter through the through holes 311 and be discharged from the filter cylinder 307, thereby improving the rinsing effect of impurities and filtering the water entering between the filter cylinder 307 and the water pump pipe 301.

[0050] like Figure 6 As shown, a first scraper 310 is fixedly connected to the outer wall of the counterweight 303. The first scraper 310 fits against the outside of the through hole 311. In this embodiment, the counterweight 303 is rotated by rotating the base plate 309, which in turn causes the first scraper 310 to rotate and clean the impurities remaining on the through hole 311, thus preventing the impurities from clogging the through hole 311.

[0051] like Figure 3As shown in Figure 9, which is a schematic diagram of the anti-adhesion component structure in this embodiment, the outer wall of the connector 202 is provided with multiple mounting grooves 203, and a support plate 400 is detachably connected inside each mounting groove 203. A rotating plate 401 is provided at the end of each support plate 400. The rotating plate 401 extends beyond the edge of the floating part 200. In this embodiment, in the foundation pit drainage scenario, the support plate 400 and the rotating plate 401 can prevent the filter part 300 from approaching the edge due to wind or water swaying. On the one hand, after contacting the inner wall of the foundation pit, it may cause collision damage to the support structure of the inner wall of the foundation pit, affecting the safety of the foundation pit construction. On the other hand, if the filter part 300 adheres to the inner wall of the foundation pit, it will cause poor water flow around the water inlet 304, which will not only further aggravate the problem of siltation and filter hole blockage, but may also cause the water pump 104 to run dry due to insufficient water intake, causing the water pump 104 to overheat and other malfunctions, seriously affecting the stability and continuity of drainage operations.

[0052] like Figure 10 As shown, this is a cross-sectional view of the anti-adhesion component in this embodiment. A sliding chamber 405 is provided inside the support plate 400 near the rotating plate 401. A piston plate 402 is slidably connected inside the sliding chamber 405. A limiting head 404, extending out of the sliding chamber 405, is fixedly connected to the outer wall of the piston plate 402. A notch is provided at the end of the support plate 400. The rotating plate 401 is rotatably connected to the notch. A connecting ring 408 is provided on the rotating plate 401 and the limiting head 404. A connecting rope 407 is provided between the two connecting rings 408. A rotating wheel 406 is rotatably connected to the end of the rotating plate 401. In this embodiment, the sealed environment inside the sliding chamber 405 ensures that the rotating plate 401, upon contact with... After contacting the inner wall of the pit, the rotating plate 401 rotates and pulls the sliding rod 403 and piston plate 402 outward through the connecting rope 407. The piston plate 402 compresses the air inside the sliding chamber 405 and generates a rebound force. The rebound force causes the rotating plate 401 to rotate, so that the filter part 300 is away from the inner wall of the pit. This also avoids the rotating plate 401 from making hard contact with the inner wall of the pit, which would damage the inner wall. The rotating wheel 406 reduces the friction between the rotating plate 401 and the inner wall of the pit, further protecting the inner wall. The connecting rope 407 can be replaced with different lengths depending on the actual condition of the inner wall of the pit, so that the rotating plate 401 can be in a horizontal, downward, or upward posture, which can cope with pumping in different scenarios.

[0053] The above description, in conjunction with specific embodiments, provides a further detailed explanation of the present invention. It should not be construed that the specific implementation of the present invention is limited to these descriptions. For those skilled in the art, several simple deductions or substitutions can be made without departing from the concept of the present invention, and all such deductions or substitutions should be considered to fall within the scope of protection defined by the claims submitted herein.

Claims

1. A drainage device for water conservancy projects during rainstorms, comprising a water pump (104) and a drive assembly (103) for driving the water pump (104) to pump water, wherein the water pump (104) is provided with an outlet (101) and an inlet (106), characterized in that, A hose is connected to the water inlet (106), and a filter (300) is detachably connected to the end of the hose. A float (200) is provided on the outside of the filter (300). The float (200) causes the filter (300) to float and be located below the water surface. The float (200) includes a float plate (201). The float plate (201) is hollow inside and a connector (202) is provided at the upper end of the float plate (201). The hose is detachably connected to the connector (202). The filter (300) is installed at the bottom of the float plate (201) and communicates with the connector (202) and the hose.

2. The drainage device for water conservancy projects during rainstorms according to claim 1, characterized in that, The floating plate (201) has a hollow part (204) inside. The floating plate (201) has a second curved part (206) and a first curved part (205). The first curved part (205) divides the space of the floating plate (201) into two parts. The bottom of the floating plate (201) is a contact part (209). The second curved part (206) is positioned higher than the contact part (209). The floating plate (201) has an inclined surface (207) on top. The inclined surface (207) guides rainwater to all directions.

3. The drainage device for water conservancy projects during rainstorms according to claim 1, characterized in that, The filter unit (300) includes a water pump pipe (301), the outer wall of which is provided with multiple water inlet holes (304), and a counterweight block (303) is detachably connected to the bottom of the water pump pipe (301).

4. The drainage device for water conservancy projects during rainstorms according to claim 3, characterized in that, A filter cylinder (307) is provided on the outside of the water pumping pipe (301). The filter cylinder (307) rotates when the water pumping pipe (301) pumps water. Sealing plates (302) are fixedly connected to the outer walls on both sides of the water pumping pipe (301) in the area of ​​the water inlet (304). The sealing plates (302) are attached to the inner wall of the filter cylinder (307).

5. The drainage device for water conservancy projects during rainstorms according to claim 3, characterized in that, A rotating base plate (309) is rotatably connected to the bottom of the pumping pipe (301). A connecting plate (308) is provided between the rotating base plate (309) and the filter cylinder (307). A transmission rod (305) that extends out of the bottom of the pumping pipe (301) is fixedly connected to the top of the inner side of the rotating base plate (309). A water turbine blade (306) is detachably connected to the upper end of the transmission rod (305). A counterweight (303) is detachably connected to the bottom of the rotating base plate (309). The water turbine blade (306) rotates when pumping water and drives the rotating base plate (309) to rotate. The rotating base plate (309) drives the external filter cylinder (307) to rotate through the connecting plate (308).

6. The drainage device for water conservancy projects during rainstorms according to claim 5, characterized in that, The bottom of the floating plate (201) is detachably connected to a second scraper (312). The second scraper (312) is attached to the outer wall of the filter cylinder (307). When the filter cylinder (307) is pumped, the filter cylinder (307) rotates, causing the second scraper (312) to clean the outer wall of the filter cylinder (307).

7. The drainage device for water conservancy projects during rainstorms according to claim 5, characterized in that, The bottom of the water pump (301) is provided with flanges on both sides of the sealing plate (302). Multiple through holes (311) are provided above the flanges. The outer wall of the counterweight (303) is fixedly connected to the first scraper (310). The first scraper (310) fits against the outside of the through hole (311). The rotating base plate (309) rotates and drives the counterweight (303) to rotate, causing the first scraper (310) to rotate. When the water surface shakes and the filter section (300) swings up and down, water enters through the through hole (311) and is discharged from the filter cylinder (307). The rotating base plate (309) rotates and drives the counterweight (303) to rotate, thereby causing the first scraper (310) to rotate to clean the impurities remaining on the through hole (311) and prevent impurities from clogging the through hole (311).

8. The drainage device for water conservancy projects during rainstorms according to claim 1, characterized in that, It also includes a support plate (400) and a rotating plate (401). The outer wall of the connector (202) is provided with multiple mounting grooves (203). The support plate (400) is installed inside the mounting groove (203). Each support plate (400) has a rotating plate (401) at its end. The rotating plate (401) extends beyond the edge of the floating part (200).

9. The drainage device for water conservancy projects during rainstorms according to claim 1, characterized in that, A sliding chamber (405) is provided inside the support plate (400) near the rotating plate (401). A piston plate (402) is slidably connected inside the sliding chamber (405). A limiting head (404) that extends out of the sliding chamber (405) is fixedly connected to the outer wall of the piston plate (402). A notch is provided at the end of the support plate (400). The rotating plate (401) is rotatably connected to the inside of the notch. A connecting ring (408) is provided on the rotating plate (401) and the limiting head (404). A connection is provided between the two connecting rings (408). A connecting rope (407) is provided, and a rotating wheel (406) is rotatably connected to the end of the rotating plate (401). The sealed environment inside the sliding chamber (405) causes the rotating plate (401) to rotate after contacting the inner wall of the pit. The connecting rope (407) pulls the sliding rod (403) and piston plate (402) outward. The piston plate (402) compresses the air inside the sliding chamber (405) and generates a rebound force. The rebound force will cause the rotating plate (401) to rotate, so that the filter part (300) is away from the inner wall of the pit.

10. The drainage device for water conservancy projects during rainstorms according to claim 1, characterized in that, It also includes a mounting frame (100), on one side of the bottom of the mounting frame (100) are rotatably connected a front-to-back moving wheel (102), on the other side of the bottom of the mounting frame (100) are a front-to-back supporting foot (105), on one side of the moving wheel (102) is a grip handle (107), and a water pump (104) and a drive assembly (103) are mounted on the mounting frame (100).

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