Water conservancy construction drainage device

By introducing a liftable filter section and anti-icing components into the drainage device, the problem of damage and blockage caused by icing in low-temperature environments is solved, realizing automatic anti-icing and self-cleaning functions, and ensuring the reliability and efficient operation of the device.

CN122383054APending Publication Date: 2026-07-14SINOHYDRO BUREAU 12 CO LTD

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
SINOHYDRO BUREAU 12 CO LTD
Filing Date
2026-05-26
Publication Date
2026-07-14

AI Technical Summary

Technical Problem

Existing drainage devices are prone to damage to components, malfunction, and clogging of filters due to water freezing in low-temperature environments. Furthermore, thawing operations are dangerous and laborious, affecting drainage efficiency.

Method used

The design features a height-adjustable filter section and an independent anti-icing component, including an electric rod and anti-icing assembly. It prevents icing through lifting and intelligent disturbance, and has a self-cleaning function for the filter to ensure normal operation of the device at low temperatures.

Benefits of technology

It achieves automatic anti-icing in frigid climates, ensuring continuous and reliable operation of the device, extending its service life, maintaining high-efficiency filtration capacity, and avoiding component damage and clogging.

✦ Generated by Eureka AI based on patent content.

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Abstract

The application discloses a water conservancy construction drainage device, and relates to the technical field of drainage devices, which comprises a sedimentation tank, a drainage pipe, a recovery tank, a lifting water filtering assembly and an anti-icing assembly. The lifting water filtering assembly comprises an electric rod and a filtering part. The filtering part is provided with a filtering inclined pipe, and the inside of the filtering inclined pipe is provided with a filter screen, a water storage cavity, a micro motor, a long plate, an impact rod, an impact plate, an impact ball and an electric heating wire. The anti-icing assembly is connected with the filtering part through a supporting bag and comprises an intercepting plate, an intercepting frame, a convex piece, a pipe column one and a pipe column two. The lifting water filtering assembly and the anti-icing assembly are lifted above the water surface, and the supporting bag is adjusted through a dual-purpose micro air pump, so that the convex piece disturbs the water surface or the pipe column one drips water to prevent icing. After drainage, the micro motor drives the long plate to swing, drives the impact rod and the impact plate to impact the filtering inclined pipe, and the impact ball generates secondary impact to clean the filter screen. The electric heating wire can assist in ice melting, and the problems that the drainage device is prone to icing damage and the filter screen is prone to blockage in a low-temperature environment are solved.
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Description

Technical Field

[0001] This invention relates to the field of drainage device technology, and more particularly to a drainage device for water conservancy construction. Background Technology

[0002] Rainwater cannot flow into the municipal stormwater drainage network by gravity after falling into the low-lying construction area of ​​water conservancy projects. Therefore, a rainwater collection pool is set up in the construction area to collect rainwater, and a drainage device is used to discharge the rainwater mixed with construction dust and silt, so that the rainwater can be recycled and reused during water conservancy construction.

[0003] First, existing precision drainage and filtration mechanisms are typically fixed and submerged in sewage for extended periods, located near the water surface. When low temperatures cause the water surface to freeze, the ice completely freezes these moving parts, rendering their mechanical transmission functions completely ineffective and preventing drainage operations. Second, manual ice breaking or heating for thawing is not only dangerous and time-consuming, but may also cause physical damage to precision components. Third, even if the parts are not completely frozen, the repeated formation and melting of ice crystals in the gaps will exacerbate wear and corrosion. Finally, the sediment remaining on the filter screen after drainage is prone to freezing and solidifying at low temperatures, severely clogging the mesh and making it difficult to clean, directly affecting subsequent drainage efficiency. Summary of the Invention

[0004] This application provides a drainage device for hydraulic construction, which solves the technical problems of existing drainage devices being prone to component damage, functional failure, and filter clogging due to water surface freezing in low-temperature environments. By setting up a liftable filter section and an independent anti-icing component, and enabling it to detach from the water surface or intelligently disturb the water surface in low temperatures, while also having a self-cleaning function for the filter, the application achieves the technical effect of automatically and effectively preventing freezing hazards in severe cold climates, ensuring the continuous and reliable operation of the drainage device and long-term maintenance-free operation.

[0005] This application provides a drainage device for hydraulic construction, including a sedimentation tank connected to a recovery tank via a drainage pipe, a valve installed on the drainage pipe, and a lifting and filtering assembly installed at the top of the sedimentation tank. The lifting and filtering assembly includes a pair of symmetrically arranged electric rods at the top of the sedimentation tank and a filter section, with the filter section positioned between the output ends of the two electric rods. A pair of symmetrical guide rods are located at the bottom of the sedimentation tank near both side walls, and an anti-icing component is installed on both pairs of guide rods. The electric rods control the lifting and lowering of the filter section and the anti-icing component within the sedimentation tank.

[0006] The top of the sedimentation tank is symmetrically equipped with limiting platforms, and the output end of the lifting and filtration assembly passes through the limiting platforms; a connecting plate is fixed to the outer arc surface of the limiting platform, and a rangefinder is installed at the bottom of the connecting plate; a rectangular guide rod two is fixed to the bottom of the sedimentation tank, and a rangefinder block is slidably connected to the guide rod two; a floating object is installed at the bottom of the rangefinder block, and the floating object is a high-strength solid buoyancy material.

[0007] It should be noted that the sedimentation tank is equipped with several sludge pumps for discharging sludge and sand.

[0008] A pair of electric rods are symmetrically arranged on both sides of the sedimentation tank and are close to the connecting plate; when the output end of the electric rod extends, it is used to lock the position of the anti-icing component; a temperature detector is also installed in the sedimentation tank.

[0009] The filtration unit includes a pair of C-shaped frames, a pair of flexible hoses, and a pair of angled filter tubes. The C-shaped frames are respectively fixed to the output ends of the corresponding electric rods, and the two angled filter tubes are respectively fixed between the two ends of the two C-shaped frames. The bottom of the angled filter tube is designed with a slope, and the outer shell of the angled filter tube is designed with a rounded transition. Multiple semi-circular grooves are equally spaced along the slope of the angled filter tube. The rounded transition design of the angled filter tube is to guide floating debris to both sides and prevent it from entering the semi-circular grooves. A water storage chamber is also opened inside the angled filter tube, and the semi-circular grooves are connected to the water storage chamber. A filter screen is fixed at the connection between the semi-circular grooves and the water storage chamber.

[0010] The inclined filter tube also includes a micro motor and a long plate; one end of the water storage chamber is provided with a micro motor, and the other end has a sliding groove; one end of the long plate is fixed to the output end of the micro motor and is eccentrically set, and the other end of the long plate is hinged to a locking rod, the other end of which is slidably connected in the sliding groove; the other end of the water storage chamber is connected to a flexible hose, one end of the drain pipe extends into the sedimentation tank, and the other end of the flexible hose is connected to the end of the drain pipe that extends into the sedimentation tank.

[0011] Multiple impact rods are fixed to the lower end of the long plate, and an impact plate is fixed to the other end of the impact rod, close to the two filter screens; an electric heating wire is provided inside the impact rod; an impact ball is slidably connected to the impact rod, one end of the impact ball is fixed to a spring, the other end of the spring is fixed to the top of the impact plate, and the impact plate is sleeved in the impact rod.

[0012] The anti-icing assembly includes a pair of metal support frames, a connecting frame, a pair of intercepting plates, and an intercepting frame. The metal support frames are also symmetrically provided with inverted U-shaped frames. The pair of intercepting plates are respectively fixed to the metal support frames at one end of the corresponding inverted U-shaped frames. The intercepting frame is fixed to the metal support frame located between the two pairs of inverted U-shaped frames.

[0013] The connecting frame consists of a pair of side plates and a pair of connecting plates, with the connecting plates fixed between the two side plates. The lower end of each side plate has an arc-shaped groove that matches the shape of the inverted U-shaped frame. The connecting frame, composed of the side plates and connecting plates, forms a hollow structure, the length and width of which match the interceptor frame. The connecting frame is fixed to the inverted U-shaped frame via the arc-shaped groove of the side plate. A support bladder is fixed to the bottom of the arc-shaped groove. A pair of dual-purpose micro air pumps are located on the top of the connecting plates. The anti-icing component contacts and is supported on the inclined filter tube via the support bladder, with the expansion and contraction of the support bladder controlled by the dual-purpose micro air pumps. The interceptor plate has a through-hole that slides through a guide rod.

[0014] The bottom of both the interceptor plate and the interceptor frame has multiple holes at equal intervals and multiple protrusions fixed to it; the protrusions are inverted conical structures.

[0015] The outer arc surface of the protrusion is circumferentially fixed with multiple pipe columns one and two, which are designed to be inclined downwards; the radius of pipe column one is larger than the radius of pipe column two; pipe column one is provided with a water storage tank along its axis, and an electric heating wire is provided inside pipe column one to prevent the water in the water storage tank from freezing.

[0016] Beneficial effects: Driven by the electric lever, the lifting and filtration components and the anti-icing components are initially positioned above the sewage surface, without being submerged in the sewage. This ensures that even if the sewage surface freezes, precision or critical components such as the inclined filter pipe, filter screen, support bladder, and protrusions will not freeze, thus preventing damage or jamming of the device due to icing, ensuring the reliability of the device's operation and extending its service life. The core function of the anti-icing component is to prevent the water surface from freezing, and one of its key protected objects is the filtration section (especially its filter screen) that needs to be submerged in water. Without the prior intervention of the anti-icing component, the filtration section may face the risk of an existing ice layer on the water surface when it is lowered to drain water.

[0017] In a low-temperature environment of -5℃ to 4℃ (easy to freeze but not extremely cold), the support bladder is repeatedly inflated and deflated by a dual-purpose micro air pump, which causes the entire anti-icing component to periodically move its bottom protrusion, tube column one, and tube column two closer to and further away from the water surface (making part of the protrusion intermittently enter and exit the water surface), effectively disturbing the outermost water molecules, breaking its static state, and delaying or preventing the formation and expansion of the ice crystal network.

[0018] In extremely low temperature environments of -20℃ to -6℃ (where high-frequency disturbances are required), the anti-icing component is raised to a higher position, so that the protrusion is completely removed from the water surface. At this time, the small amount of sewage collected in the water storage tank of the first column when it was in contact with the water surface will drip down as the component is raised, continuously generating high-frequency water droplet disturbances on the water surface below, further enhancing the anti-icing effect and preventing low-frequency disturbances from being insufficient to cope with extreme cold.

[0019] After the drainage work is completed, the micro motor drives the long plate to swing, which in turn drives the impact rod and impact plate to swing. The impact plate collides with the inner wall of the inclined filter pipe. At the same time, the impact ball on the impact rod compresses the spring under the action of inertia and impacts the impact plate, generating a secondary impact force. This composite impact force can effectively shake off the mud and sand remaining in the filter screen mesh. Meanwhile, the electric heating wire in the impact rod can heat and melt any residual sewage that may have been frozen, ensuring that the filter screen is clean and unobstructed, and maintaining high-efficiency filtration capacity for subsequent drainage operations.

[0020] The anti-icing component achieves height adjustment through the deformation of the support bladder. Its movement is a gentle vertical rise and fall, rather than violent agitation in the sewage. This design ensures that when implementing surface disturbance anti-icing, the static state of the lower layer of water in the sedimentation tank is not disrupted, thus guaranteeing the normal settling of silt and not interfering with the core process of sedimentation followed by drainage. Attached Figure Description

[0021] Figure 1 This is a three-dimensional structural schematic diagram of a drainage device for water conservancy construction according to the present invention; Figure 2 This is a structural diagram of the filter section of a drainage device for water conservancy construction according to the present invention; Figure 3 This is a schematic diagram of the filter inclined pipe structure of a drainage device for water conservancy construction according to the present invention; Figure 4 This is a schematic diagram of the position of the measuring block in a water conservancy construction drainage device according to the present invention; Figure 5 This is a schematic diagram showing the position of the interceptor plate in a water conservancy construction drainage device according to the present invention; Figure 6 This is a schematic diagram of the metal support frame structure of a drainage device for water conservancy construction according to the present invention; Figure 7 This is a schematic diagram of the protruding component structure of a drainage device for water conservancy construction according to the present invention; Figure 8 This is a schematic diagram of the bottom structure of a drainage device for water conservancy construction according to the present invention; Figure 9 This is a schematic diagram of a pipe column structure for a drainage device for hydraulic construction according to the present invention.

[0022] In the picture: 100. Sedimentation tank; 101. Guide rod one; 102. Limiting platform; 103. Connecting plate; 104. Rangefinder; 105. Guide rod two; 106. Rangefinder block; 107. Electric rod two; 110. Recycling tank; 111. Drain pipe; 112. Valve; 200. Lifting filter assembly; 201. Electric rod one; 210. Filter section; 211. C-frame; 212. Flexible hose; 220. Filter inclined tube; 2201. Water storage chamber; 2202. Slide chute; 221. Semicircular trough; 222. 223. Filter screen; 224. Miniature motor; 225. Long plate; 226. Impact rod; 227. Impact plate; 228. Impact ball; 229. Spring; 300. Anti-icing component; 301. Metal support frame; 302. Inverted U-shaped frame; 310. Connecting frame; 311. Side plate; 312. Connecting plate; 313. Arc groove; 320. Interception plate; 330. Interception frame; 340. Support bladder; 341. Dual-purpose miniature air pump; 350. Protrusion; 351. Pipe column one; 352. Pipe column two. Detailed Implementation

[0023] To facilitate understanding of the present invention, a more complete description of this application will be given below with reference to the accompanying drawings, which illustrate preferred embodiments of the invention. However, the invention can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to enable a more thorough and complete understanding of the disclosure of the present invention.

[0024] It should be noted that the terms "vertical," "horizontal," "up," "down," "left," "right," and similar expressions used in this article are for illustrative purposes only and do not represent the only possible implementation.

[0025] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains; the terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to limit the invention; the term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0026] Example 1: As Figures 1 to 9As shown, this application discloses a drainage device for hydraulic construction, including a sedimentation tank 100 connected to a recovery tank 110 via a drain pipe 111. A valve 112 is installed on the drain pipe 111. A lifting and filtering water assembly 200 is installed on the top of the sedimentation tank 100. The lifting and filtering water assembly 200 includes a pair of symmetrically arranged electric rods 201 on the top of the sedimentation tank 100 and a filter section 210. The filter section 210 is located between the output ends of the two electric rods 201. A pair of guide rods 101 are symmetrically arranged on the bottom of the sedimentation tank 100 near both side walls. An anti-icing component 300 is provided on both pairs of guide rods 101. The electric rods 201 control the lifting and lowering of the filter section 210 and the anti-icing component 300 within the sedimentation tank 100.

[0027] The top of the sedimentation tank 100 is symmetrically provided with a limiting platform 102, and the output end of the lifting filter assembly 200 passes through the limiting platform 102; a connecting plate 103 is fixedly connected to the outer arc surface of the limiting platform 102, and a rangefinder 104 is provided at the bottom of the connecting plate 103; a rectangular guide rod 105 is fixedly connected to the bottom of the sedimentation tank 100, and a rangefinder block 106 is slidably connected to the guide rod 105; a floating object is provided at the bottom of the rangefinder block 106, and the floating object is a high-strength solid buoyancy material; It should be noted that several sludge pumps for discharging sludge and sand are installed in the sedimentation tank 100.

[0028] A pair of electric rods 107 are symmetrically arranged on both sides of the sedimentation tank 100 and are close to the connecting plate 103; when the output end of the electric rods 107 extends, it is used to lock the position of the anti-icing component 300; a temperature detector is also installed in the sedimentation tank 100.

[0029] The filter section 210 includes a pair of C-shaped frames 211, a pair of flexible hoses 212, and a pair of angled filter tubes 220. The C-shaped frames 211 are respectively fixed to the output ends of the corresponding electric rods 201, and the two angled filter tubes 220 are respectively fixed between the two ends of the two C-shaped frames 211. The bottom of the angled filter tube 220 is designed with a slope, and the outer shell of the angled filter tube 220 is designed with a rounded transition. The angled filter tube 220 has multiple semi-circular grooves 221 equidistantly opened along the slope. The rounded transition design of the angled filter tube 220 is to guide floating debris to both sides and prevent it from entering the semi-circular grooves 221. The interior of the angled filter tube 220 also has a water storage chamber 2201, and the semi-circular grooves 221 are connected to the water storage chamber 2201. A filter screen 222 is fixedly connected at the connection between the semi-circular grooves 221 and the water storage chamber 2201.

[0030] The inclined filter tube 220 also includes a micro motor 223 and a long plate 224; one end of the water storage chamber 2201 is provided with the micro motor 223, and the other end has a sliding groove 2202; one end of the long plate 224 is fixed to the output end of the micro motor 223 and is eccentrically set, and the other end of the long plate 224 is hinged with a locking rod, and the other end of the locking rod is slidably connected in the sliding groove 2202; the other end of the water storage chamber 2201 is connected to a flexible hose 212, one end of the drain pipe 111 extends into the sedimentation tank 100, and the other end of the flexible hose 212 is connected to the end of the drain pipe 111 that extends into the sedimentation tank 100.

[0031] Multiple impact rods 225 are fixedly connected to the lower end of the long plate 224, and an impact plate 226 is fixedly connected to the other end of the impact rod 225, which is close to the two filter screens 222. An electric heating wire is provided inside the impact rod 225. An impact ball 227 is slidably connected to the impact rod 225. A spring 228 is fixedly connected to one end of the impact ball 227, and the other end of the spring 228 is fixedly connected to the top of the impact plate 226. The impact plate 226 is sleeved in the impact rod 225.

[0032] The anti-icing component 300 includes a pair of metal support frames 301, a connecting frame 310, a pair of intercepting plates 320, and an intercepting frame 330. The metal support frames 301 are also symmetrically provided with inverted U-shaped frames 302. The pair of intercepting plates 320 are respectively fixed to the metal support frames 301 at one end of the corresponding inverted U-shaped frames 302. The intercepting frame 330 is fixed to the metal support frame 301 located between the two pairs of inverted U-shaped frames 302.

[0033] The connecting frame 310 consists of a pair of side plates 311 and a pair of connecting plates 312, with the connecting plates 312 fixed between the two side plates 311. The lower end of each side plate 311 has an arc-shaped groove 313, which matches the shape of the inverted U-shaped frame 302. The connecting frame 310, consisting of the side plates 311 and the connecting plates 312, has a hollow structure, and the length and width of the hollow structure match those of the interceptor frame 330. The connecting frame 310 is connected via the arc-shaped groove 313 of the side plates 311. 13 is fixed to the inverted U-shaped frame 302; the bottom of the arc-shaped groove 313 is fixed to a support bladder 340; a pair of dual-purpose micro air pumps 341 are provided on the top of the connecting plate 312; the anti-icing component 300 is supported on the filter inclined tube 220 through the contact of the support bladder 340 with the filter inclined tube 220, and the expansion and contraction of the support bladder 340 are controlled by the dual-purpose micro air pumps 341; the interceptor plate 320 has a through hole that is slidably connected to the guide rod 101.

[0034] The bottom of the interceptor plate 320 and the interceptor frame 330 are provided with multiple side plates 311, connecting plates 312 and multiple protrusions 350 fixedly connected thereto; the protrusions 350 are inverted conical structures.

[0035] The outer arc surface of the protrusion 350 is circumferentially fixed with multiple pipe columns 351 and 352. The pipe columns 351 and 352 are designed to be inclined downwards. The radius of the pipe column 351 is larger than that of the pipe column 352. The pipe column 351 is provided with a water storage tank along its axis. The pipe column 351 is provided with a heating wire to prevent the water in the water storage tank from freezing.

[0036] Specific implementation: During rainfall, the interceptor plate 320 and interceptor frame 330 of the anti-icing component 300 can block branches or other debris that are broken by strong winds, preventing them from falling directly into the sewage, thereby avoiding debris from clogging the main inlet of the filtered clean water, namely the filter screen 222 on the filter inclined pipe 220.

[0037] After rainfall ceases, the sediment-laden wastewater containing silt in sedimentation tank 100 begins to settle. If the temperature detector detects that the ambient temperature has entered a low-temperature range (e.g., -20℃ to 4℃), the control system will activate the anti-freezing plan. At this time, the lifting filter assembly 200 and the anti-icing assembly 300 are both positioned above the wastewater surface under the drive of the electric lever 201, without contacting the wastewater. This ensures that even if the water surface freezes, it will not damage critical components of the device or hinder its operation, thereby guaranteeing the reliability and service life of the device.

[0038] After the sediment has settled, the second electric rod 107 located on the pool wall is extended to provide mechanical positioning. Then, the first electric rod 201 drives the C-shaped frame 211, the filter section 210, and the anti-icing component 300 to descend. The anti-icing component 300 is stopped at a fixed height by the output end of the second electric rod 107 and stops immersing further. The first electric rod 201 continues to slowly immerse the C-shaped frame 211 and the filter section 210 into the water. At this time, the upper layer of clear water enters the water storage chamber 2201 through the semi-circular groove 221 at the bottom of the inclined filter pipe 220, and any small amount of suspended matter that may be carried in the water is intercepted by the filter screen 222. The clear water then flows through the hose 212 into the drain pipe 111 and is finally discharged into the recycling tank 110. After drainage is complete, the sediment settled at the bottom of the pool is discharged by the sludge pump.

[0039] When the ambient temperature is between -5℃ and 4℃, the dual-purpose micro air pump 341 is activated to periodically inflate and deflate the support bladder 340. During this time, the distance between the anti-icing component 300 and the sewage surface continuously changes under the action of the support bladder 340 (the liquid level is monitored in real time by the rangefinder 104 and guide rod 105 to ensure that the protrusion 350 is in contact with the water surface), meaning the protrusion 350 intermittently contacts the water surface. This process aims to disturb the surface water molecules, breaking their static state to delay or prevent the formation and expansion of the ice crystal network. By adjusting the support bladder 340, approximately half of the protrusion 350 can be submerged in the water and reciprocate. The tubing columns 351 and 352, which are above the water surface, further enhance the disturbance effect on the surface water upon re-entry.

[0040] When the ambient temperature drops to -20℃ to -6℃, the interceptor plate 320 and interceptor frame 330 are raised to a higher position via the support bladder 340, completely detaching the protrusion 350 from the water surface. During this lifting process, a small amount of wastewater collected in the water storage tank of the tubing column 351 will drip down (during which the heating wire of the tubing column 351 operates), continuously generating high-frequency water droplet disturbances on the water surface below. This mode provides a stronger anti-icing effect than simple physical contact, addressing the potential insufficiency of low-frequency disturbances in extremely low-temperature environments.

[0041] After drainage is completed, the C-frame 211 and the inclined filter tube 220 are reset via the electric rod 201. If the ambient temperature is still in the low-temperature range (-20℃~4℃), a cleaning procedure needs to be initiated to prevent residual water and sediment on the filter screen 222 from freezing and solidifying, thus clogging the mesh. The micro motor 223 is activated to swing the long plate 224, which in turn drives the impact rod 225 and impact plate 226 to swing together. When the impact plate 226 swings, it collides with the inner wall of the inclined filter tube 220 (i.e., the area between adjacent filter screens 222). During the collision, the impact ball 227 compresses the spring 228 under inertia and impacts the impact plate 226, generating a secondary impact. This combined vibration force can effectively shake off the sediment remaining in the mesh of the filter screen 222. At the same time, the heating wire in the impact rod 225 can be activated to increase the temperature in the water storage chamber 2201, melting any potentially frozen residual sewage and ensuring that the filter screen 222 is clean and unobstructed.

[0042] It should be noted that the anti-icing component 300 achieves height adjustment through the deformation of the support bladder 340, and its movement is a gentle vertical rise and fall, rather than violent agitation in the sewage. This design ensures that the static state of the lower layer of water in the sedimentation tank 100 is not disrupted when implementing surface disturbance anti-icing, thereby guaranteeing the normal sedimentation process of silt and not interfering with the core process of "sedimentation first, then drainage".

[0043] Beneficial effects: Driven by the electric rod 201, the filter section 210 and the anti-icing component 300 are initially positioned above the sewage surface and not submerged in the sewage. This ensures that even if the sewage surface freezes, precision or critical components such as the inclined filter pipe 220, filter screen 222, support bladder 340, and protrusion 350 will not freeze, thus preventing damage or jamming of the device due to icing, ensuring the reliability of the device's operation and extending its service life. The core function of the anti-icing component 300 is to prevent the water surface from freezing, and one of its key protected objects is the filter section 210 (especially its filter screen 222), which needs to be submerged in water. Without the prior intervention of the anti-icing component 300, the filter section 210 may face the risk of an existing ice layer on the water surface when it is lowered to drain water.

[0044] In a low-temperature environment of -5℃ to 4℃ (easy to freeze but not extremely cold), the dual-purpose micro air pump 341 controls the support bladder 340 to be repeatedly inflated and deflated, causing the entire anti-icing component 300 to periodically move the protrusion 350, tube column one 351, and tube column two 352 at its bottom to move closer to and further away from the water surface (making a part of the protrusion 350 intermittently enter and exit the water surface), effectively disturbing the outermost water molecules, breaking its static state, and delaying or preventing the formation and expansion of the ice crystal network.

[0045] In extremely low temperature environments of -20℃ to -6℃ (where high-frequency disturbances are required), the anti-icing component 300 is raised to a higher position, so that the protrusion 350 is completely detached from the water surface. At this time, the small amount of sewage collected in the water storage tank of the tube column 351 when it was in contact with the water surface will drip down as the component is raised, continuously generating high-frequency water droplet disturbances on the water surface below, further enhancing the anti-icing effect and preventing low-frequency disturbances from being insufficient to cope with extreme cold.

[0046] After the drainage work is completed, the micro motor 223 drives the long plate 224 to swing, which in turn drives the impact rod 225 and the impact plate 226 to swing. The impact plate 226 collides with the inner wall of the filter inclined tube 220. At the same time, the impact ball 227 on the impact rod 225 compresses the spring 228 under the action of inertia and impacts the impact plate 226, generating a secondary impact force. This composite vibration force can effectively shake off the mud and sand remaining in the mesh of the filter screen 222. Meanwhile, the heating wire in the impact rod 225 can be heated to melt any residual sewage that may have frozen, ensuring that the filter screen 222 is clean and unobstructed, and maintaining a high-efficiency filtration capacity for subsequent drainage operations.

[0047] The anti-icing component 300 achieves height adjustment through the deformation of the support bladder 340. Its movement is a gentle vertical rise and fall, rather than violent agitation in the sewage. This design ensures that the static state of the lower layer of water in the sedimentation tank 100 is not disrupted when implementing surface disturbance anti-icing, thereby ensuring the normal settling of silt and not interfering with the core process of sedimentation followed by drainage.

[0048] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. For those skilled in the art, the present invention can have various modifications and variations. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A drainage device for hydraulic construction, comprising a sedimentation tank (100) connected to a recovery tank (110) via a drainage pipe (111), wherein a valve (112) is provided on the drainage pipe (111), characterized in that, A lifting filter assembly (200) is provided on the top of the sedimentation tank (100). The lifting filter assembly (200) includes a pair of electric rods (201) symmetrically arranged on the top of the sedimentation tank (100) and a filter section (210). The filter section (210) is arranged between the output ends of the two electric rods (201). A pair of guide rods (101) are symmetrically arranged on the bottom of the sedimentation tank (100) near the two side walls. An anti-icing assembly (300) is provided on both pairs of guide rods (101). The electric rods (201) control the filtration section (210) and the anti-icing assembly (300) to rise and fall in the sedimentation tank (100).

2. The drainage device for water conservancy construction according to claim 1, characterized in that, The top of the sedimentation tank (100) is symmetrically provided with a limiting platform (102), and the output end of the lifting filter assembly (200) passes through the limiting platform (102); a connecting plate (103) is fixedly connected to the outer arc surface of the limiting platform (102), and a rangefinder (104) is provided at the bottom of the connecting plate (103); a rectangular guide rod (105) is fixedly connected to the bottom of the sedimentation tank (100), and a rangefinder (106) is slidably connected to the guide rod (105). A floating object is provided at the bottom of the rangefinder (106), and the floating object is a high-strength solid buoyancy material.

3. The drainage device for hydraulic construction according to claim 1, characterized in that, A pair of electric rods (107) are symmetrically arranged on both sides of the sedimentation tank (100) and are close to the connecting plate (103); a temperature detector is also installed in the sedimentation tank (100).

4. A drainage device for hydraulic construction according to claim 1, characterized in that, The filter section (210) includes a pair of C-shaped frames (211), a pair of flexible hoses (212), and a pair of angled filter tubes (220). The C-shaped frames (211) are respectively fixed to the output end of the corresponding electric rod (201), and the two angled filter tubes (220) are respectively fixed between the two ends of the two C-shaped frames (211). The bottom of the angled filter tube (220) is designed with a slope, and the outer shell of the angled filter tube (220) is designed with a rounded transition. The angled filter tube (220) has multiple semi-circular grooves (221) equidistantly opened along the slope. The interior of the angled filter tube (220) also has a water storage chamber (2201), and the semi-circular grooves (221) are connected to the water storage chamber (2201). A filter screen (222) is fixed at the connection between the semi-circular grooves (221) and the water storage chamber (2201).

5. A drainage device for hydraulic construction according to claim 4, characterized in that, The filter inclined tube (220) also includes a micro motor (223) and a long plate (224); one end of the water storage chamber (2201) is provided with a micro motor (223), and the other end is provided with a sliding groove (2202); one end of the long plate (224) is fixed to the output end of the micro motor (223) and is eccentrically set, and the other end of the long plate (224) is hinged with a locking rod, and the other end of the locking rod is slidably connected in the sliding groove (2202); the other end of the water storage chamber (2201) is connected to a hose (212), one end of the drain pipe (111) extends into the sedimentation tank (100), and the other end of the hose (212) is connected to the end of the drain pipe (111) that extends into the sedimentation tank (100).

6. A drainage device for hydraulic construction according to claim 5, characterized in that, The lower end of the long plate (224) is fixedly connected to a plurality of impact rods (225), and the other end of the impact rods (225) is fixedly connected to an impact plate (226) and is close to the two filter screens (222); an electric heating wire is provided inside the impact rods (225); an impact ball (227) is slidably connected to the impact rods (225), one end of the impact ball (227) is fixedly connected to a spring (228), the other end of the spring (228) is fixedly connected to the top of the impact plate (226), and the impact plate (226) is sleeved in the impact rods (225).

7. A drainage device for hydraulic construction according to claim 6, characterized in that, The anti-icing component (300) includes a pair of metal support frames (301), a connecting frame (310), a pair of intercepting plates (320), and an intercepting frame (330). The metal support frames (301) are also symmetrically provided with inverted U-shaped frames (302). The pair of intercepting plates (320) are respectively fixed to the metal support frames (301) at one end of the corresponding inverted U-shaped frames (302). The intercepting frame (330) is fixed to the metal support frame (301) located between the two pairs of inverted U-shaped frames (302).

8. A drainage device for hydraulic construction according to claim 7, characterized in that, The connecting frame (310) consists of a pair of side plates (311) and a pair of connecting plates (312), with the connecting plates (312) fixed between the two side plates (311). The lower end of each side plate (311) is provided with an arc-shaped groove (313), which matches the shape of the inverted U-shaped frame (302). The connecting frame (310) forms a hollow structure through the side plates (311) and the connecting plates (312), and the length and width of the hollow structure match those of the interceptor frame (330). The connecting frame (310) is connected through the arc-shaped groove of the side plate (311). (313) is fixed to the inverted U-shaped frame (302); the bottom of the arc groove (313) is fixed to a support bladder (340); a pair of dual-purpose micro air pumps (341) are provided on the top of the connecting plate (312); the anti-icing component (300) is supported on the filter inclined tube (220) through the contact of the support bladder (340) with the filter inclined tube (220), and the expansion and contraction of the support bladder (340) are controlled by the dual-purpose micro air pumps (341); the interceptor plate (320) has a through hole that is slidably connected to the guide rod (101).

9. A drainage device for hydraulic construction according to claim 8, characterized in that, The bottom of the interceptor plate (320) and the interceptor frame (330) are both equidistantly provided with multiple holes and fixed with multiple protrusions (350); the protrusions (350) are inverted conical structures.

10. A drainage device for hydraulic construction according to claim 9, characterized in that, The outer arc surface of the protrusion (350) is circumferentially fixed with multiple pipe columns one (351) and two pipe columns two (352). The pipe columns one (351) and two pipe columns two (352) are designed to be inclined downwards. The radius of the pipe column one (351) is larger than the radius of the pipe column two (352). The pipe column one (351) is provided with a water storage tank along its axis. The pipe column one (351) is provided with an electric heating wire to prevent the water in the water storage tank from freezing.