Water conservancy and hydropower construction foundation pit drainage device
By designing a foundation pit drainage device that includes drainage anti-blocking components and drainage auxiliary components, the problem of traditional devices being susceptible to water level fluctuations and soil seepage is solved, stable extraction and automatic cleaning are achieved, and drainage efficiency and construction safety are improved.
Patent Information
- Application Number
- CN202510616158.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-05-14
- Publication Date
- 2025-06-27
- Estimated Expiration
- Not applicable · inactive patent
AI Technical Summary
Traditional foundation pit drainage devices are susceptible to water level fluctuations and soil seepage, insufficient drainage power or uneven drainage, fixed filter structure and lack self-cleaning mechanism, resulting in increased resistance to water flow, reduced drainage efficiency or complete stagnation.
A foundation pit drainage device including a floating plate and a floating frame is designed, using drainage anti-blocking components and drainage auxiliary components. The drainage anti-blocking assembly drives the propeller and scraper through the rotating shaft to achieve stable water extraction and automatic cleaning of the filter structure; the drainage auxiliary assembly drives elastic ropes and lead blocks through the motor to adjust the center of gravity and anti-population capability of the device.
It realizes stable water extraction and discharge, prevents debris from accumulation and blockage, reduces maintenance costs, improves drainage efficiency, ensures dry construction environment, and improves construction efficiency and safety.
Smart Images
Figure CN120211302A_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to the technical field of foundation pit drainage, and particularly to a foundation pit drainage device for water conservancy and hydropower construction. Background Art
[0002] In the construction of water conservancy and hydropower projects, the application of foundation pit drainage devices is undoubtedly a core and crucial link to ensure construction safety and efficiency. Water conservancy projects are often located around rivers, lakes, and other water bodies, with complex and variable geological conditions. When excavating the foundation pit, it is extremely easy to encounter the dual challenges of high groundwater level and strong soil permeability. Especially when the bottom of the foundation pit is in loose geological layers such as silty sand layer and fine sand layer, geological disasters such as quicksand and piping are likely to occur. These disasters will not only cause a large amount of water accumulation in the foundation pit, making the working surface muddy and seriously delaying the construction progress; but also may cause the instability and collapse of the slope soil body, directly threatening the lives of construction workers and the safety of equipment and property.
[0003] In terms of drainage function, traditional foundation pit drainage is easily affected by water level fluctuations and soil seepage, and problems such as insufficient drainage power or uneven pumping and drainage are likely to occur. The filtering structures of traditional devices are mostly fixed and lack a self-cleaning mechanism. Fine particles such as sediment are easily deposited in the filter screen gaps, and gravel and plant roots may be stuck at the edges of the filter holes or wound around the surface of the frame, resulting in a sharp increase in the resistance of water flow, a sudden drop in drainage efficiency, or even a complete stop. Therefore, a foundation pit drainage device for water conservancy and hydropower construction needs to be proposed. Summary of the Invention
[0004] The purpose of the present invention is to solve the problems existing in the prior art that traditional foundation pit drainage is easily affected by water level fluctuations and soil seepage, and problems such as insufficient drainage power or uneven pumping and drainage are likely to occur. The filtering structures of traditional devices are mostly fixed and lack a self-cleaning mechanism. Fine particles such as sediment are easily deposited in the filter screen gaps, and gravel and plant roots may be stuck at the edges of the filter holes or wound around the surface of the frame, resulting in a sharp increase in the resistance of water flow, a sudden drop in drainage efficiency, or even a complete stop. A foundation pit drainage device for water conservancy and hydropower construction is proposed.
[0005] In order to achieve the above purpose, the present invention adopts the following technical solutions:
[0006] A water conservancy and hydropower construction foundation pit drainage device, including a floating plate and a floating frame, is fixedly connected between the floating plate and the floating frame. A first filter hole is fixedly connected to the lower part of the floating plate. A drainage anti-blocking component is jointly arranged on the floating plate and the first filter hole. The drainage anti-blocking component includes a rotating shaft, a propeller and a drainage pipe arranged on the floating plate, a horizontal scraping rod and an arc-shaped scraping rod arranged outside the rotating shaft, the drainage pipe, and a horizontal filter plate and a hemispherical filter plate arranged on the first filter hole. The rotation of the rotating shaft will drive the propeller to discharge the foundation pit water from the inside of the drainage pipe. The rotation of the rotating shaft will simultaneously drive the horizontal scraping rod and the arc-shaped scraping rod to rotate. The rotation of the horizontal scraping rod and the arc-shaped scraping rod will scrape the blockages outside the horizontal filter plate and the hemispherical filter plate. A drainage auxiliary component is arranged on the floating frame. The drainage auxiliary component includes a sliding rod and a pressing plate arranged on the floating frame, and a motor, an elastic rope and a lead block arranged on the sliding rod. When the pressing plate is externally pressed, it will drive the sliding rod to slide outside the floating frame. The rotation of the output shaft of the motor will drive the elastic rope to move. The movement of the elastic rope can traction the lead block in the vertical direction.
[0007] The above technical solution further includes:
[0008] A servo motor is fixedly connected to the upper part of the floating plate. A fixed connection is between the end of the output shaft of the servo motor and the rotating shaft. A fixed connection is between the outside of the rotating shaft and the propeller. The rotation of the rotating shaft will drive the propeller to rotate.
[0009] A first filter hole is fixedly connected to the lower part of the floating plate. A drainage groove is opened inside the first filter hole. A fixed connection is between the inside of the drainage groove and the horizontal filter plate. A plurality of connecting blocks are fixedly connected to the inside of the drainage groove. A fixed connection is between the lower part of the connecting block and the horizontal filter plate. The rotation of the propeller will transport the foundation pit water inside the drainage groove to the outside through the drainage pipe.
[0010] A plurality of first filter holes are opened on the outside of the horizontal filter plate. The plurality of first filter holes are evenly distributed in a circular pattern along the horizontal filter plate. A rotating connection is between the outside of the horizontal filter plate and the rotating shaft. A fixed connection is between the outside of the rotating shaft and the horizontal scraping rod. The lower part of the horizontal scraping rod is in contact with the horizontal filter plate. The rotation of the horizontal scraping rod can scrape off the blockages outside the first filter hole.
[0011] A fixed connection is between the lower part of the horizontal filter plate and the hemispherical filter plate. A plurality of second filter holes are opened on the outside of the hemispherical filter plate. The plurality of second filter holes are evenly distributed in a circular pattern along the hemispherical filter plate.
[0012] The outer side of the hemispherical filter plate is rotatably connected to the second filter hole, a weight block is fixedly connected to the lower part of the rotating shaft, the outer side of the rotating shaft and the bow-shaped scraper rod are fixedly connected, the upper part of the bow-shaped scraper rod is in contact with the outer side of the hemispherical filter plate, and the rotation of the bow-shaped scraper rod will scrape off larger particles in the foundation pit water outside the hemispherical filter plate.
[0013] The outer side of the floating frame is slidably connected to the sliding rod, the end of the sliding rod away from the rotating shaft is fixedly connected to the extrusion plate, the end of the extrusion plate close to the sliding rod is fixedly connected with a spring, the end of the spring away from the extrusion plate is fixedly connected to the floating frame, and a plurality of blocking plates are fixedly connected to the outer side of the floating frame. The spring mainly serves to buffer the extrusion plate when debris squeezes the extrusion plate.
[0014] The end of the sliding rod away from the extrusion plate is fixedly connected to the motor, and the end of the output shaft of the motor is fixedly connected to a rotating rod, and the starting of the motor will drive the rotating rod to rotate.
[0015] The outer side of the rotating rod is fixedly connected to the elastic rope, and one end of the elastic rope away from the rotating rod is fixedly connected to the lead block. The elastic rope is wound around the outer side of the rotating rod, and the rotation of the rotating rod drives the elastic rope to move in the vertical direction.
[0016] The outer side of the motor is fixedly connected to a limiting cylinder, and the elastic rope runs through the entire limiting cylinder. The limiting cylinder can limit the elastic rope to prevent the elastic rope from drifting to the side close to the rotating shaft.
[0017] The present invention has the following beneficial effects:
[0018] 1. In the present invention, by setting a drainage anti-blocking component, in terms of drainage function, the rotation of the shaft drives the propeller to discharge the foundation pit water from the inside of the drainage pipe, thereby realizing stable water pumping, ensuring the dry land construction environment in the foundation pit, and improving construction efficiency. In terms of anti-blocking function, the rotation of the shaft simultaneously drives the horizontal scraping rod and the bow scraping rod to rotate, which can timely scrape off the blockages on the outside of the horizontal filter plate and the hemispherical filter plate, effectively preventing the accumulation of debris from clogging the filter structure, avoiding poor drainage or even failure of the drainage device due to blockage, reducing the frequency and difficulty of manual cleaning of blockages, and reducing maintenance costs. The structure is compact and ingenious, and there is no need to set up an additional complex power source. The anti-blocking function can be achieved by relying solely on drainage power.
[0019] 2. In the present invention, further, by providing a drainage assistance component, when encountering situations such as water level changes, water flow impacts, or debris accumulation, the extrusion plate is externally extruded to drive the sliding rod to slide outside the floating frame. This design enables the device to flexibly adapt to different water levels and external pressure changes, maintaining drainage stability. At the same time, the motor drives the elastic rope to move, thereby pulling the lead block to move in the vertical direction, and the overall center of gravity position of the device can be flexibly adjusted. When the water level drops or the water flow is rapid, by changing the position of the lead block, the anti-overturning ability of the device can be enhanced, preventing it from shifting or overturning due to the action of the water flow, and ensuring the continuous and stable progress of the drainage operation. BRIEF DESCRIPTION OF THE DRAWINGS
[0020] Figure 1 is a schematic diagram of the overall structure of a foundation pit drainage device for water conservancy and hydropower construction proposed by the present invention;
[0021] Figure 2 is a schematic diagram of the overall bottom view structure in the present invention;
[0022] Figure 3 is a schematic diagram of the overall sectional structure in the present invention;
[0023] Figure 4 is a schematic diagram of the structure of the drainage assistance component in the present invention;
[0024] Figure 5 is Figure 4 a schematic diagram of the enlarged structure at position A in
[0025] Figure 6 is Figure 4 a schematic diagram of the enlarged structure at position B in
[0026] Figure 7 is Figure 4 a schematic diagram of the enlarged structure at position C in
[0027] In the figure: 1, floating plate; 2, floating frame; 3, servo motor; 4, rotating shaft; 5, propeller; 6, first filter hole; 7, horizontal filter plate; 8, horizontal scraping rod; 9, hemispherical filter plate; 10, second filter hole; 11, weight increasing block; 12, bow-shaped scraping rod; 13, drainage groove; 14, connecting block; 15, sliding rod; 16, spring; 17, extrusion plate; 18, motor; 19, rotating rod; 20, elastic rope; 21, lead block; 22, limiting cylinder; 23, blocking plate; 24, drain pipe. DETAILED DESCRIPTION OF THE EMBODIMENTS
[0028] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.
[0029] Embodiment 1
[0030] As Figures 1-7 shown, a water conservancy and hydropower construction foundation pit drainage device proposed by the present invention includes a floating plate 1 and a floating frame 2, which are fixedly connected between the floating plate 1 and the floating frame 2. A first filter hole 6 is fixedly connected to the lower part of the floating plate 1. A drainage and anti-blocking component is jointly arranged on the floating plate 1 and the first filter hole 6. The drainage and anti-blocking component includes a rotating shaft 4, a propeller 5, and a drain pipe 24 arranged on the floating plate 1, a horizontal scraping rod 8 and an arcuate scraping rod 12 arranged outside the rotating shaft 4, a drain pipe 24, and a horizontal filter plate 7 and a hemispherical filter plate 9 arranged on the first filter hole 6. The rotation of the rotating shaft 4 will drive the propeller 5 to discharge the foundation pit water from the inside of the drain pipe 24. The rotation of the rotating shaft 4 will simultaneously drive the horizontal scraping rod 8 and the arcuate scraping rod 12 to rotate. The rotation of the horizontal scraping rod 8 and the arcuate scraping rod 12 will scrape the blockages outside the horizontal filter plate 7 and the hemispherical filter plate 9. A drainage auxiliary component is arranged on the floating frame 2. The drainage auxiliary component includes a sliding rod 15 and a pressing plate 17 arranged on the floating frame 2, and a motor 18, an elastic rope 20, and a lead block 21 arranged on the sliding rod 15. When the pressing plate 17 is externally pressed, it will drive the sliding rod 15 to slide outside the floating frame 2. The rotation of the output shaft of the motor 18 will drive the elastic rope 20 to move. The movement of the elastic rope 20 can traction the lead block 21 in the vertical direction.
[0031] A servo motor 3 is fixedly connected to the upper part of the floating plate 1. The end of the output shaft of the servo motor 3 is fixedly connected to the rotating shaft 4, and the outside of the rotating shaft 4 is fixedly connected to the propeller 5. The rotation of the rotating shaft 4 will drive the propeller 5 to rotate.
[0032] A first filter hole 6 is fixedly connected to the lower part of the floating plate 1. A drainage groove 13 is opened inside the first filter hole 6. The inside of the drainage groove 13 is fixedly connected to the horizontal filter plate 7. A plurality of connecting blocks 14 are fixedly connected to the inside of the drainage groove 13. The lower part of the connecting block 14 is fixedly connected to the horizontal filter plate 7. The rotation of the propeller 5 will transport the foundation pit water inside the drainage groove 13 to the outside through the drain pipe 24.
[0033] A plurality of first filter holes 6 are provided on the outer side of the horizontal filter plate 7, and the plurality of first filter holes 6 are evenly distributed in a circular pattern along the horizontal filter plate 7. The outer side of the horizontal filter plate 7 is rotatably connected to the rotating shaft 4. The outer side of the rotating shaft 4 is fixedly connected to the horizontal scraping rod 8. The lower part of the horizontal scraping rod 8 is in contact with the horizontal filter plate 7. The rotation of the horizontal scraping rod 8 can scrape off the blockages outside the first filter holes 6.
[0034] The lower part of the horizontal filter plate 7 is fixedly connected to the hemispherical filter plate 9. A plurality of second filter holes 10 are provided on the outer side of the hemispherical filter plate 9, and the plurality of second filter holes 10 are evenly distributed in a circular pattern along the hemispherical filter plate 9.
[0035] The outer side of the hemispherical filter plate 9 is rotatably connected to the second filter holes 10. A weight increasing block 11 is fixedly connected to the lower part of the rotating shaft 4. The outer side of the rotating shaft 4 is fixedly connected to the arcuate scraping rod 12. The upper part of the arcuate scraping rod 12 is in contact with the outer side of the hemispherical filter plate 9. The rotation of the arcuate scraping rod 12 will scrape off the larger particles in the foundation pit water outside the hemispherical filter plate 9.
[0036] In this embodiment, the specific implementation method is as follows: When in use, the entire device needs to be placed at the foundation pit. Due to the functions of the floating plate 1 and the floating frame 2, the entire device will float on the water surface. Start the servo motor 3. The rotation of the output shaft of the servo motor 3 will drive the rotating shaft 4 to rotate. The rotation of the rotating shaft 4 will drive the propeller 5 to rotate. The rotation of the propeller 5 will transport the foundation pit water inside the drainage groove 13 to the outside through the drainage pipe 24. During the rotation of the propeller 5, the foundation pit water will enter the inside of the hemispherical filter plate 9 through the second filter holes 10 provided on the outer side of the hemispherical filter plate 9. At this time, the rotation of the rotating shaft 4 will drive the arcuate scraping rod 12 to rotate. Because the arcuate scraping rod 12 is in contact with the outer side of the hemispherical filter plate 9, when the rotating shaft 4 rotates, it will drive the arcuate scraping rod 12 to rotate at the same time. The rotation of the arcuate scraping rod 12 will scrape off the larger particles in the foundation pit water outside the hemispherical filter plate 9, which can effectively prevent the drainage pipe 24 from being blocked. The weight increasing block 11 mainly plays a role in increasing the weight of the rotating shaft 4, so that the rotating shaft 4 can always be in a vertical state. The foundation pit water entering the inside of the hemispherical filter plate 9 will enter the inside of the drainage groove 13 through the first filter holes 6 provided on the inside of the horizontal filter plate 7. At this time, the rotation of the rotating shaft 4 will drive the horizontal scraping rod 8 to rotate. The rotation of the horizontal scraping rod 8 can, on the one hand, scrape off the blockages outside the first filter holes 6, and on the other hand, as the horizontal scraping rod 8 rotates, it will stir the foundation pit water inside the drainage groove 13 from the bottom. The function of the stirring by the horizontal scraping rod 8 is to further prevent the foundation pit water from precipitating inside the drainage groove 13, and the precipitated foundation pit water will block the first filter holes 6 again.
[0037] Embodiment Two
[0038] As shown in Figures 1-7 the figure, based on the first embodiment, the outer side of the floating frame 2 is slidably connected to the sliding rod 15. One end of the sliding rod 15 away from the rotating shaft 4 is fixedly connected to the pressing plate 17. One end of the pressing plate 17 close to the sliding rod 15 is fixedly connected with a spring 16. One end of the spring 16 away from the pressing plate 17 is fixedly connected to the floating frame 2. A plurality of blocking plates 23 are fixedly connected to the outer side of the floating frame 2. The spring 16 mainly functions to buffer the pressing plate 17 when sundries press on the pressing plate 17.
[0039] One end of the sliding rod 15 away from the pressing plate 17 is fixedly connected to the motor 18. The end of the output shaft of the motor 18 is fixedly connected with a rotating rod 19. The start of the motor 18 will drive the rotating rod 19 to rotate.
[0040] The outer side of the rotating rod 19 is fixedly connected to the elastic rope 20. One end of the elastic rope 20 away from the rotating rod 19 is fixedly connected to the lead block 21. The elastic rope 20 is wound around the outer side of the rotating rod 19. The rotation of the rotating rod 19 will drive the elastic rope 20 to move in the vertical direction.
[0041] The outer side of the motor 18 is fixedly connected with a limiting cylinder 22. The elastic rope 20 passes through the entire limiting cylinder 22. The limiting cylinder 22 can limit the elastic rope 20 to prevent the elastic rope 20 from drifting away towards the side close to the rotating shaft 4.
[0042] In this embodiment, the specific implementation method is that the rotation of the rotating shaft 4 will drive the foundation pit water to be conveyed out from the inside of the drain pipe 24. As the drain pipe 24 drains the foundation pit water, the water body around the device will gather towards the surrounding of the rotating shaft 4. At this time, it is necessary to block the sundries on the water surface or in the water body. The specific implementation method is that when the sundries approach the rotating shaft 4, they will touch the pressing plate 17. The pressing plate 17 will be extruded by the external extrusion and will extrude the sliding rod 15. The sliding rod 15 will slide on the outer side of the floating frame 2. When the sundries drift away, the spring 16 can make the pressing plate 17 return to the original position. The spring 16 mainly functions to buffer the pressing plate 17 when sundries press on the pressing plate 17. The blocking plate 23 will further isolate the sundries outside the floating frame 2. The start of the motor 18 will drive the rotating rod 19 to rotate. The elastic rope 20 is wound around the outer side of the rotating rod 19. The rotation of the rotating rod 19 will drive the elastic rope 20 to move in the vertical direction. The movement of the elastic rope 20 will drive the lead block 21 to move in the vertical direction. The lead block 21 mainly functions to fix and increase the weight of the entire device. The limiting cylinder 22 can limit the elastic rope 20 to prevent the elastic rope 20 from drifting away towards the side close to the rotating shaft 4.
[0043] Although embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.
Claims
1. A water conservancy and hydropower construction foundation pit drainage device, comprising a floating plate (1) and a floating frame (2), characterized in that: The floating plate (1) and the floating frame (2) are fixedly connected, the lower part of the floating plate (1) is fixedly connected with a first filter hole (6), and the floating plate (1) and the first filter hole (6) are jointly provided with a drainage anti-blocking component, the drainage anti-blocking component comprising a rotating shaft (4), a propeller (5) and a drainage pipe (24) arranged on the floating plate (1), a horizontal scraping rod (8) and an arch scraping rod (12) arranged outside the rotating shaft (4), the drainage pipe (24), and a horizontal filter plate (7) and a hemispherical filter plate (9) arranged on the first filter hole (6), the rotation of the rotating shaft (4) will drive the propeller (5) to discharge the foundation pit water from the inside of the drainage pipe (24), and the rotation of the rotating shaft (4) will simultaneously drive the horizontal scraping rod (8) to move ... ) and the arched scraper rod (12) rotate, the rotation of the horizontal scraper rod (8) and the arched scraper rod (12) scrapes off the blockage on the outside of the horizontal filter plate (7) and the hemispherical filter plate (9), the floating frame (2) is provided with a drainage auxiliary component, the drainage auxiliary component comprises a sliding rod (15) and a pressing plate (17) arranged on the floating frame (2), and a motor (18), an elastic rope (20) and a lead block (21) arranged on the sliding rod (15), the pressing plate (17) is pressed by the outside world to drive the sliding rod (15) to slide on the outside of the floating frame (2), the output shaft of the motor (18) rotates to drive the elastic rope (20) to move, and the movement of the elastic rope (20) can pull the lead block (21) in the vertical direction.
2. A water conservancy and hydropower construction foundation pit drainage device according to claim 1, characterized in that: A servo motor (3) is fixedly connected to the upper part of the floating board (1), an output shaft end of the servo motor (3) and a rotating shaft (4) are fixedly connected, and an outer side of the rotating shaft (4) and a propeller (5) are fixedly connected.
3. A water conservancy and hydropower construction foundation pit drainage device according to claim 1, characterized in that: A first filter hole (6) is fixedly connected to the lower part of the floating plate (1), a drainage groove (13) is provided inside the first filter hole (6), the inner side of the drainage groove (13) is fixedly connected to the horizontal filter plate (7), a plurality of connection blocks (14) are fixedly connected to the inner side of the drainage groove (13), and the lower part of the connection block (14) is fixedly connected to the horizontal filter plate (7).
4. A water conservancy and hydropower construction foundation pit drainage device according to claim 3, characterized in that: The outer side of the horizontal filter plate (7) is provided with a plurality of first filter holes (6), and the plurality of first filter holes (6) are evenly distributed and arranged along the circumference of the horizontal filter plate (7); the outer side of the horizontal filter plate (7) is rotatably connected to the rotating shaft (4); the outer side of the rotating shaft (4) is fixedly connected to the horizontal scraper rod (8); and the lower part of the horizontal scraper rod (8) is in contact with the horizontal filter plate (7).
5. A water conservancy and hydropower construction foundation pit drainage device according to claim 1, characterized in that: The lower part of the horizontal filter plate (7) is fixedly connected to the hemispherical filter plate (9), and a plurality of second filter holes (10) are provided on the outer side of the hemispherical filter plate (9). The plurality of second filter holes (10) are evenly distributed along the circumference of the hemispherical filter plate (9).
6. A water conservancy and hydropower construction foundation pit drainage device according to claim 1, characterized in that: The outer side of the hemispherical filter plate (9) is rotatably connected to the second filter hole (10), a weight block (11) is fixedly connected to the lower part of the rotating shaft (4), the outer side of the rotating shaft (4) is fixedly connected to the arched scraper rod (12), and the upper part of the arched scraper rod (12) is in contact with the outer side of the hemispherical filter plate (9).
7. A water conservancy and hydropower construction foundation pit drainage device according to claim 1, characterized in that: The outer side of the floating frame (2) is slidably connected to the sliding rod (15), the end of the sliding rod (15) away from the rotating shaft (4) is fixedly connected to the extrusion plate (17), the end of the extrusion plate (17) close to the sliding rod (15) is fixedly connected to a spring (16), the end of the spring (16) away from the extrusion plate (17) is fixedly connected to the floating frame (2), and the outer side of the floating frame (2) is fixedly connected to a plurality of blocking plates (23).
8. The water conservancy and hydropower construction foundation pit drainage device according to claim 1, characterized in that: One end of the sliding rod (15) away from the extrusion plate (17) is fixedly connected to the motor (18), and the end of the output shaft of the motor (18) is fixedly connected to a rotating rod (19).
9. A water conservancy and hydropower construction foundation pit drainage device according to claim 8, characterized in that: The outer side of the rotating rod (19) is fixedly connected to the elastic rope (20), and one end of the elastic rope (20) away from the rotating rod (19) is fixedly connected to the lead block (21).
10. A water conservancy and hydropower construction foundation pit drainage device according to claim 8, characterized in that: The outer side of the motor (18) is fixedly connected to a limiting cylinder (22), and the elastic rope (20) runs through the entire limiting cylinder (22).