Water conservancy construction cofferdam drainage device

Abstract

The utility model relates to the cofferdam drainage technical field, especially a drainage device for water conservancy construction cofferdam. The utility model has the advantages of: the water pump is placed on the top surface of the second supporting plate, is supported through the floating air bag, makes it float on the position of water surface, makes the water suction pipe of the suction end of water pump keep in the position of water body close to water surface when sucking water, thereby makes the suction process reduce the suction of bottom silt, reduces the blockage, improves the drainage efficiency, and the filter cage is covered outside the water suction pipe, can effectively intercept the garbage floating on the water surface, and after falling to the position of cofferdam device bottom, can support the water suction pipe, prevents its insertion silt, keeps its through effect, the water pump is supported to the water surface through the floating air bag and the second supporting plate, thereby makes the suction end of water pump maximum distance close to the water surface, thereby reduces the length of suction end, reduces the suction resistance, improves the drainage efficiency, reduces the air suction simultaneously, reduces the cavitation of water pump.

Description

Technical Field

[0001] This utility model relates to the field of cofferdam drainage technology, and in particular to a drainage device for cofferdams used in water conservancy construction. Background Technology

[0002] In the construction of water conservancy projects, cofferdams, as temporary water-retaining structures, are key facilities for ensuring the dry construction of the main project, and their drainage efficiency directly affects the project progress and construction safety. Currently, the commonly used drainage devices for cofferdams in water conservancy construction mainly include a combination of pump pumping systems and collection wells, which use multiple stages of pumps to pump the water accumulated inside the cofferdam to external waterways.

[0003] The drainage devices used for cofferdams in current water conservancy construction still have the following problems in practical use: Current drainage systems mostly use water pumps installed on top of the cofferdam to extract water from inside the cofferdam. A suction pipe is connected to the suction end of the pump to draw water out. However, the suction pipe is directly immersed in the water, and its excessive length will cause it to coil around the bottom of the water, resulting in bends and affecting suction. Moreover, the suction pipe sinks to the bottom of the water and is prone to sucking up silt, causing blockages. Utility Model Content

[0004] The purpose of this utility model is to overcome the shortcomings of the prior art and provide a drainage device for cofferdams in water conservancy construction, which effectively solves the deficiencies of the prior art.

[0005] To achieve the above objectives, one embodiment of this utility model provides a drainage device for a cofferdam in hydraulic construction, including a cofferdam device. A clamping support assembly is installed in the middle of one side of the top surface of the cofferdam device. First support plates are fixedly connected to both sides of the top surface of the clamping support assembly. A winding shaft is rotatably connected to the center of the top of the two first support plates. Positioning baffles are fixedly connected to both sides of the outer wall of the winding shaft. A drainage hose is wound and fixedly connected to the outer wall of the winding shaft. The inner wall of the winding shaft is a hollow structure. The fixed end of the drainage hose and the winding shaft penetrates through the inner wall of the winding shaft. The bottom end of the drainage hose... A water pump is fixedly connected, and a second support plate is fixedly connected to the bottom of the water pump. A floating airbag is fixedly connected to the side of the second support plate, and a filter cage is fixedly connected to the edge of the bottom surface of the second support plate. A suction pipe is fixedly connected to the suction end of the water pump. The suction pipe extends through the bottom surface of the second support plate and is located in the middle of the inner wall of the filter cage. The bottom end of the suction pipe is higher than the bottom surface of the filter cage. A drain pipe is fixedly connected to the center of one end of the winding shaft. The output end of the drain pipe extends out of the outer wall of the cofferdam device. The drain pipe communicates with the inner wall of the winding shaft. The drain hose communicates with the output end of the water pump.

[0006] Preferably, in any of the above embodiments, the clamping support assembly includes a top support frame plate, one end of which is fixedly connected to a fixed clamping plate, and a drive screw is threadedly connected to the center of the end of the top support frame plate away from the fixed clamping plate. One end of the drive screw is rotatably connected to a movable clamping plate, the top of the movable clamping plate is slidably connected to the inner wall of the top support frame plate, and one end of the drive screw is fixedly connected to a rotating head.

[0007] The technical effect achieved by the above solution is that by rotating the drive screw, the movable clamping plate can be pushed to clamp the fixed clamping plate, thereby achieving mutual clamping and fixation.

[0008] Preferably, in any of the above solutions, the movable clamping plate and the fixed clamping plate are of equal size, and anti-slip pads are fixedly connected to the opposite sides of the movable clamping plate and the fixed clamping plate, and the fixed clamping plate is perpendicular to the top support frame plate.

[0009] The technical effect achieved by adopting the above solution is that the movable clamping plate and the fixed clamping plate can be brought close to each other to clamp the dam wall of the cofferdam device, thereby achieving fixation.

[0010] Preferably, in any of the above embodiments, a coil spring fixing ring plate is fixedly connected to the top of one side of the first support plate, one end of the winding shaft penetrates into the center of the inner wall of the coil spring fixing ring plate, a coil spring is fixedly connected to the inner wall of the coil spring fixing ring plate, the outer ring of the coil spring is fixedly connected to the inner wall of the coil spring fixing ring plate, and the center of the coil spring is fixedly connected to the winding shaft.

[0011] The technical effect achieved by adopting the above solution is that by using this solution, the winding shaft can provide a certain pulling force to the water pump through the winding drainage hose, while ensuring the tension of the drainage hose.

[0012] Preferably, in any of the above embodiments, a connecting steel rope is fixedly connected to the outer wall of the drain hose and arranged parallel thereto, the bottom end of the connecting steel rope is fixedly connected to the outer wall of the water pump, and the drain hose is rolled up and stored between two positioning baffles.

[0013] The technical effect achieved by adopting the above solution is that the connection strength can be improved by connecting steel ropes, reducing the tension on the drainage hose and improving the connection strength.

[0014] This utility model has the following advantages: 1. The drainage device for the cofferdam in this water conservancy construction places the water pump on the top surface of the second support plate and supports it with a floating airbag, so that it floats on the water surface. This keeps the suction pipe at the suction end of the water pump close to the water surface when it is sucking water, thereby reducing the intake of bottom silt during the water suction process, reducing blockage, and improving drainage efficiency. Moreover, the filter cover on the outside of the suction pipe can effectively intercept floating garbage on the water surface. After falling to the bottom of the cofferdam device, it can support the suction pipe to prevent it from inserting into the silt and maintain its unobstructed effect.

[0015] 2. The drainage device for the cofferdam in this water conservancy construction supports the water pump on the water surface through a floating airbag and a second support plate, so that the suction end of the water pump is as close to the water surface as possible, thereby reducing the length of the suction end, reducing suction resistance, improving drainage efficiency, and reducing air intake, thus reducing cavitation on the water pump. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a top view of the structure of this utility model; Figure 3 This utility model Figure 2 Schematic diagram of the cross-sectional structure at point AA.

[0017] In the diagram: 1-cofferdam device, 2-fixed clamping plate, 3-top support frame plate, 4-first support plate, 5-winding shaft, 6-positioning baffle, 7-drainage hose, 8-drainage pipe, 9-coil spring fixing ring plate, 10-drive screw, 11-second support plate, 12-floating airbag, 13-water pump, 14-filter cage, 15-suction pipe, 16-movable clamping plate, 17-coil spring. Detailed Implementation

[0018] The present invention will be further described below with reference to the accompanying drawings, but the scope of protection of the present invention is not limited to the following description.

[0019] like Figures 1 to 3As shown, a drainage device for a cofferdam in water conservancy construction includes a cofferdam device 1. The device is characterized in that: a clamping support assembly is installed at the center of one side of the top surface of the cofferdam device 1; first support plates 4 are fixedly connected to both sides of the top surface of the clamping support assembly; a winding shaft 5 is rotatably connected to the center of the top of the two first support plates 4; positioning baffles 6 are fixedly connected to both sides of the outer wall of the winding shaft 5; a drainage hose 7 is wound and fixedly connected to the outer wall of the winding shaft 5; the inner wall of the winding shaft 5 is hollow; the fixed end of the drainage hose 7 penetrates the inner wall of the winding shaft 5; and a water pump 13 is fixedly connected to the bottom end of the drainage hose 7. A second support plate 11 is fixedly connected to the bottom, a floating airbag 12 is fixedly connected to the side of the second support plate 11, a filter cage 14 is fixedly connected to the edge of the bottom surface of the second support plate 11, a suction pipe 15 is fixedly connected to the suction end of the water pump 13, the suction pipe 15 passes through the bottom surface of the second support plate 11 and is located in the middle of the inner wall of the filter cage 14, the bottom end of the suction pipe 15 is higher than the bottom surface of the filter cage 14, a drain pipe 8 is fixedly connected to the center of one end of the winding shaft 5, the output end of the drain pipe 8 extends out of the outer wall of the cofferdam device 1, the drain pipe 8 communicates with the inner wall of the winding shaft 5, and the drain hose 7 communicates with the output end of the water pump 13.

[0020] As an optional technical solution of this utility model, the clamping support assembly includes a top support frame plate 3, one end of which is fixedly connected to a fixed clamping plate 2, and a drive screw 10 is threadedly connected to the center of the end of the top support frame plate 3 away from the fixed clamping plate 2. One end of the drive screw 10 is rotatably connected to a movable clamping plate 16, the top of the movable clamping plate 16 is slidably connected to the inner wall of the top support frame plate 3, and one end of the drive screw 10 is fixedly connected to a rotating head. By rotating the drive screw 10, the movable clamping plate 16 can be pushed to clamp the fixed clamping plate 2, thereby achieving mutual clamping and fixation.

[0021] As an optional technical solution of this utility model, the movable clamping plate 16 and the fixed clamping plate 2 are of the same size. Anti-slip pads are fixedly connected to the sides of the movable clamping plate 16 and the fixed clamping plate 2 facing each other. The fixed clamping plate 2 is set perpendicularly to the top support frame plate 3, so that the movable clamping plate 16 and the fixed clamping plate 2 can approach each other and clamp the dam wall of the cofferdam device 1 to achieve fixation.

[0022] As an optional technical solution of this utility model, a coil spring fixing ring plate 9 is fixedly connected to the top of one side of the first support plate 4. One end of the winding shaft 5 penetrates into the center of the inner wall of the coil spring fixing ring plate 9. A coil spring 17 is fixedly connected to the inner wall of the coil spring fixing ring plate 9. The outer ring of the coil spring 17 is fixedly connected to the inner wall of the coil spring fixing ring plate 9. The center of the coil spring 17 is fixedly connected to the winding shaft 5. The coil spring 17 can provide winding force to the winding shaft 5, so that the winding shaft 5 can provide a certain pulling force to the water pump 13 through winding the drainage hose 7, while ensuring the tension of the drainage hose 7.

[0023] As an optional technical solution of this utility model, a connecting steel rope is fixedly connected to the outer wall of the drainage hose 7 and arranged in parallel thereto. The bottom end of the connecting steel rope is fixedly connected to the outer wall of the water pump 13. The drainage hose 7 is rolled up and stored between the two positioning baffles 6. The connecting steel rope can improve the connection strength, reduce the tension on the drainage hose 7, and improve the connection strength.

[0024] The following steps are required when using this drainage device for a cofferdam used in hydraulic construction: 1) The water pump 13 is supported on the water surface by the floating airbag 12 and the second support plate 11; 2) Water is drawn through the suction pipe 15 and the water pump 13, and the water flow is fed into the drain hose 7 and finally injected into the take-up shaft 5. The water is then discharged through the drain pipe 8. 3) As the water flows out, the water level inside the cofferdam device 1 drops, and the water pump 13 falls synchronously with the floating airbag 12.

[0025] In summary, this utility model places the water pump 13 on the top surface of the second support plate 11 and supports it with the floating airbag 12, allowing it to float on the water surface. This ensures that the suction pipe 15 at the suction end of the water pump 13 remains close to the water surface during water intake, thereby reducing the intake of bottom silt, reducing blockage, and improving drainage efficiency. Furthermore, the filter cage 14 covering the outside of the suction pipe 15 can effectively intercept floating garbage on the water surface. After falling to the bottom of the cofferdam device 1, it can support the suction pipe 15, preventing it from inserting into the silt and maintaining its unobstructed flow. The floating airbag 12 and the second support plate 11 support the water pump 13 on the water surface, allowing the suction end of the water pump 13 to be as close to the water surface as possible, thereby reducing the length of the suction end, reducing suction resistance, improving drainage efficiency, and reducing air intake, thus reducing cavitation on the water pump 13.

[0026] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A drainage device for a cofferdam in hydraulic construction, comprising a cofferdam device (1), characterized in that: A clamping support assembly is installed in the middle of one side of the top surface of the cofferdam device (1). A first support plate (4) is fixedly connected to both sides of the top surface of the clamping support assembly. A winding shaft (5) is rotatably connected to the center of the top of the two first support plates (4). A positioning baffle (6) is fixedly connected to both sides of the outer wall of the winding shaft (5). A drainage hose (7) is wound and fixedly connected to the outer wall of the winding shaft (5). The inner wall of the winding shaft (5) is a hollow structure. The fixed end of the drainage hose (7) and the winding shaft (5) penetrates into the inner wall of the winding shaft (5). A water pump (13) is fixedly connected to the bottom end of the drainage hose (7). A second support plate (11) is fixedly connected to the bottom of the water pump (13). A floating airbag (12) is fixedly connected to the side of the support plate (11). A filter cage (14) is fixedly connected to the edge of the bottom surface of the second support plate (11). A suction pipe (15) is fixedly connected to the suction end of the water pump (13). The suction pipe (15) extends through the bottom surface of the second support plate (11) and is located in the middle of the inner wall of the filter cage (14). The bottom end of the suction pipe (15) is higher than the bottom surface of the filter cage (14). A drain pipe (8) is fixedly connected to the center of one end of the winding shaft (5). The output end of the drain pipe (8) extends out of the outer wall of the cofferdam device (1). The drain pipe (8) is connected to the inner wall of the winding shaft (5). The drain hose (7) is connected to the output end of the water pump (13).

2. The drainage device for cofferdams in hydraulic construction according to claim 1, characterized in that: The clamping support assembly includes a top support frame plate (3), one end of which is fixedly connected to a fixed clamping plate (2), and a drive screw (10) is threadedly connected to the center of the end of the top support frame plate (3) away from the fixed clamping plate (2). One end of the drive screw (10) is rotatably connected to a movable clamping plate (16), the top of the movable clamping plate (16) is slidably connected to the inner wall of the top support frame plate (3), and one end of the drive screw (10) is fixedly connected to a rotating head.

3. The drainage device for cofferdams in hydraulic construction according to claim 2, characterized in that: The movable clamp (16) and the fixed clamp (2) are the same size. Anti-slip pads are fixedly connected to the sides of the movable clamp (16) and the fixed clamp (2) facing each other. The fixed clamp (2) is set perpendicular to the top support frame (3).

4. The drainage device for cofferdams in hydraulic construction according to claim 3, characterized in that: A coil spring fixing ring plate (9) is fixedly connected to the top of one side of the first support plate (4). One end of the winding shaft (5) penetrates into the center of the inner wall of the coil spring fixing ring plate (9). A coil spring (17) is fixedly connected to the inner wall of the coil spring fixing ring plate (9). The outer ring of the coil spring (17) is fixedly connected to the inner wall of the coil spring fixing ring plate (9). The center of the coil spring (17) is fixedly connected to the winding shaft (5).

5. The drainage device for cofferdams in hydraulic construction according to claim 4, characterized in that: The outer wall of the drainage hose (7) is fixedly connected with a connecting steel rope arranged in parallel with it. The bottom end of the connecting steel rope is fixedly connected to the outer wall of the water pump (13). The drainage hose (7) is rolled up and stored between two positioning baffles (6).

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