A drainage structure for foundation pits in water conservancy projects

Abstract

This utility model relates to the field of foundation pit drainage structures, and discloses a drainage structure for foundation pits in hydraulic engineering, including a submersible pump, a buoyancy component, a recovery component, a casing, and a removal component. The buoyancy component is mounted on the submersible pump to make it float and extract water during drainage. The removal component is located at the suction point of the submersible pump and is driven by the pump. The casing has filter holes, and the removal component is connected to the casing via the recovery component. When the submersible pump starts, it drives the casing to rotate and filter water. As the filter holes on the casing become clogged, the casing is drawn towards the removal component and cleaned by its cleaning part. This utility model uses a float to make the submersible pump float with the water level. The support rod and support part provide auxiliary support when the water level drops. The submersible pump drives the removal component to dynamically filter the casing. When clogged, the casing moves upward, triggering the removal shaft to clean. The spring linkage of the recovery component realizes an automated "filtration-cleaning-reset" cycle, improving drainage efficiency and lifespan.

Description

Technical Field

[0001] This utility model relates to the field of foundation pit drainage structure technology, and more specifically, it relates to a foundation pit drainage structure for water conservancy projects. Background Technology

[0002] The foundation pit of a water conservancy project is a crucial foundational element in the construction of water conservancy facilities such as dams, gates, pumping stations, spillways, and diversion canals. Its core function is to provide a flat and dry working space for the excavation, reinforcement binding, and concrete pouring of various water conservancy facilities. During construction, several drainage ditches are usually scientifically arranged around the perimeter of the foundation pit. Through the design of the ditch slope, they are connected to the collection well to form a systematic water collection network. When rainfall causes the water level in the foundation pit to rise rapidly, submersible pumps can be placed in the foundation pit to extract the water, and pumping pipes can be used to pump the collected groundwater out of the foundation pit, ensuring that the construction surface is not affected by water accumulation and guaranteeing the safety and continuity of the foundation construction of the water conservancy project. This drainage system not only meets the drainage needs of the foundation pit excavation stage but also creates the necessary conditions for the subsequent main structure construction, making it an indispensable part of water conservancy project construction.

[0003] During the dewatering operation in the foundation pit, due to the high sand and gravel content in the shallow groundwater area, the water in the foundation pit will carry a large amount of sand and gravel when the water pump is pumping groundwater. This can easily cause the water pump to become clogged, thus affecting the continuity of the dewatering work. In order to ensure the normal operation of the water pump, the construction workers have to clean the filter screen manually from time to time, which undoubtedly increases the workload of the construction workers and also reduces the overall efficiency of the pumping. Utility Model Content

[0004] This utility model provides a drainage structure for foundation pits in water conservancy projects, solving the technical problem of increased inconvenience in cleaning due to the blockage of submersible pumps during long-term extraction in related technologies.

[0005] This utility model provides a drainage structure for a foundation pit in a water conservancy project, including a submersible pump, a buoyancy component, a recovery component, a cover, and a removal component;

[0006] The buoyancy component is installed on the submersible pump to make the submersible pump float up and extract water during drainage.

[0007] The removal component is located at the suction point of the submersible pump and is driven by the submersible pump;

[0008] The housing is provided with filter holes. The removal component is connected to the housing through a return component so that the housing is rotated for filtration when the submersible pump is started. As the filter holes on the housing become blocked, the housing is drawn and moves toward the removal component, and is cleaned by the cleaning part of the removal component.

[0009] As a further optimization of this utility model, the buoyancy component includes a float box, which is mounted on the submersible pump.

[0010] As a further optimization of this utility model, the pontoon is fixedly connected to a support rod, and the bottom end of the support rod forms a support portion.

[0011] As a further optimization of this utility model, the recovery component includes a sleeve, a spring, and a moving rod. One end of the sleeve is closed and connected to the removal component. The other end of the sleeve is penetrated by the moving rod, and the moving rod is connected to the closed end of the sleeve through the spring.

[0012] As a further optimization of this utility model, the cover includes an upwardly formed opening, which is slidably fitted with the outer shell of the submersible pump, and the outer periphery of the cover is provided with through holes.

[0013] As a further optimization of this utility model, the removal component includes a filter screen and a removal shaft. The filter screen is connected to the impeller shaft of the submersible pump via a connecting rod. The removal shaft is vertically installed at the bottom of the filter screen and is correspondingly arranged with the filter holes. The middle part of the filter screen is fixedly connected to the sleeve.

[0014] As a further optimization of this utility model, the mesh diameter of the filter screen is smaller than the diameter of the filter hole and the opening.

[0015] As a further optimization of this utility model, the top of the filter screen is rotatably connected to the inlet of the submersible pump.

[0016] The beneficial effects of this utility model are as follows:

[0017] 1. The drainage structure for a foundation pit in a water conservancy project described in this utility model allows the submersible pump to automatically float with the water level through the buoyancy box in the buoyancy component, always maintaining the optimal pumping height. Meanwhile, the support rod and support part support the bottom of the foundation pit when the water level drops, limiting the horizontal displacement of the equipment and ensuring stable operation. This structure adapts to dynamic changes in water level and avoids the submersible pump sinking to the bottom and sucking in too much impurity, achieving adaptive operation while improving drainage efficiency.

[0018] 2. The drainage structure for foundation pits in water conservancy projects described in this utility model achieves dynamic filtration by rotating the removal component driven by a submersible pump, which in turn drives the cover to rotate synchronously. When the filter holes become clogged, the cover is pulled down by suction, triggering movement to be cleaned by the removal shaft, ensuring continuous drainage. At the same time, the filter holes of the cover and the outer peripheral through holes, together with the finer mesh of the filter screen, form a double filtration, effectively intercepting sand and gravel particles, avoiding wear on the submersible pump impeller, and extending the service life of the equipment.

[0019] 3. The drainage structure for foundation pits in water conservancy projects described in this utility model forms an elastic linkage mechanism through the spring, sleeve and moving rod of the return component. When the cover moves upward to clean due to blockage, the spring automatically pushes it to reset, forming an automated cycle of "filtration-blockage-cleaning-reset". This design does not require additional power. The action is triggered by the change of suction force of the submersible pump, which maintains the continuous and stable operation of the filtration system, reduces maintenance costs and improves the automation level of the device. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of a drainage structure for a foundation pit in a water conservancy project, as proposed in this utility model.

[0021] Figure 2 This is a structural diagram of a drainage structure for a foundation pit in a water conservancy project proposed in this utility model.

[0022] Figure 3 This is a structural diagram of a drainage structure for a foundation pit in a water conservancy project proposed in this utility model.

[0023] In the picture:

[0024] 1. Submersible pump;

[0025] 2. Buoyancy components; 21. Float box; 22. Support rod; 23. Support section;

[0026] 3. Return piece; 31. Sleeve; 32. Spring; 33. Moving rod;

[0027] 4. Cover; 41. Filter hole; 42. Opening; 43. Through hole;

[0028] 5. Removed parts; 51. Filter screen; 52. Removed shaft; 53. Connecting rod. Detailed Implementation

[0029] The subject matter described herein will now be discussed with reference to exemplary embodiments. It should be understood that these embodiments are discussed only to enable those skilled in the art to better understand and implement the subject matter described herein, and changes may be made to the function and arrangement of the elements discussed without departing from the scope of this specification. Various processes or components may be omitted, substituted, or added as needed in the examples. Furthermore, features described in some examples may be combined in other examples.

[0030] like Figures 1 to 3 As shown in the figure, a drainage structure for a foundation pit in a water conservancy project according to an embodiment of the present invention includes a submersible pump 1, a buoyancy component 2, a recovery component 3, a cover 4, and a removal component 5;

[0031] The buoyancy component 2 is installed on the submersible pump 1 so that the submersible pump 1 floats up and is pumped out when water is discharged.

[0032] The removal component 5 is located at the suction point of the submersible pump 1 and is driven by the submersible pump 1;

[0033] The housing 4 is provided with filter holes 41. The removal component 5 is connected to the housing 4 through the return component 3. When the submersible pump 1 is started, the housing 4 is driven to rotate and filter. As the filter holes 41 on the housing 4 become blocked, the housing 4 is drawn and moves toward the removal component 5, and is cleaned by the cleaning part of the removal component 5.

[0034] After the submersible pump 1 is started, the buoyancy component 2 provides buoyancy to make it float on the water surface, facilitating the pumping of accumulated water. The removal component 5 is located at the suction point of the submersible pump 1 and is driven by the rotation of the impeller of the submersible pump 1. The filter holes 41 on the casing 4 are used for preliminary filtration of impurities in the water. The removal component 5 is connected to the casing 4 through the return component 3. When the submersible pump 1 is started, it drives the removal component 5 to rotate, which in turn drives the casing 4 to rotate through the return component 3, realizing dynamic filtration. If the filter holes 41 are blocked by impurities, the continuous pumping of the submersible pump 1 will cause the casing 4 to be subjected to greater suction. At this time, the cleaning part of the removal component 5 will scrape and clean the filter holes 41. The return component 3 is affected by the suction of the submersible pump 1. When the suction decreases, it can push the casing 4 to return to its original position after cleaning, or it can be cleaned by manually adjusting the output power of the submersible pump. The buoyancy component 2 keeps the submersible pump 1 in a floating state to adapt to changes in water level. The combination of dynamic rotation filtration and automatic cleaning reduces the blockage of the filter holes 41, improves the continuity of drainage, reduces the need for frequent manual cleaning, and reduces workload.

[0035] In an optional embodiment, the buoyancy component 2 includes a float 21 disposed on the submersible pump 1, the buoyancy of the float 21 being greater than the weight of the submersible pump 1, so that the submersible pump 1 floats on the water surface.

[0036] The float box 21 in the buoyancy component 2 is fixed to the submersible pump 1. The buoyancy is generated by the air or lightweight material inside the float box 21, so that the submersible pump 1 floats on the water surface. The float box 21 provides stable buoyancy for the submersible pump 1, ensuring that it is always in a suitable pumping position during the drainage process, reducing the intake of too much sand and gravel due to sinking to the bottom of the water.

[0037] The design of the pontoon 21 allows the submersible pump 1 to adapt to changes in the pit water level without manual adjustment, preventing the pump body from sinking to the bottom and sucking in a large amount of sand and gravel. It also reduces the problem of filter system failure caused by positional deviation, improves the working condition adaptability and operational stability of the drainage device, and the setting of the pontoon 21.

[0038] Furthermore, the pontoon 21 is fixedly connected to a support rod 22, and the bottom end of the support rod 22 forms a support part 23.

[0039] The pontoon 21 is connected to the support part 23 via the support rod 22. The support rod 22 extends vertically downward. As the water level drops, the bottom end of the support part 23 contacts the bottom of the pit to form a support. When the submersible pump 1 floats due to buoyancy, the support rod 22 and the support part 23 can restrict its horizontal displacement.

[0040] In an optional embodiment, the return member 3 includes a sleeve 31, a spring 32, and a moving rod 33. One end of the sleeve 31 is closed and connected to the removal member 5. The other end of the sleeve 31 is inserted by the moving rod 33, and the moving rod 33 is connected to the closed end of the sleeve 31 through the spring 32.

[0041] In the return component 3, one end of the sleeve 31 is fixedly connected to the removal component 5, and the other end accommodates the extension of the moving rod 33. The spring 32 is set inside the sleeve 31, with both ends connected to the moving rod 33 and the closed end of the sleeve 31, respectively. When the cover 4 is lifted by suction due to the blockage of the filter hole 41, the moving rod 33 compresses the spring 32 inside the sleeve 31. With the change of suction force of the vacuum pump 1, after cleaning is completed, the spring 32 resets and pushes the moving rod 33, causing the cover 4 to move upward. The elasticity of the spring 32 allows the cover 4 to move up and down when subjected to force, which not only ensures that the cleaning action can be triggered when the filter hole 41 is blocked, but also automatically resets after cleaning, maintaining the continuous operation of the filtration system.

[0042] In an optional embodiment, the housing 4 includes an upwardly formed opening 42 that slides with the housing of the submersible pump 1, and the outer periphery of the housing 4 is provided with a through hole 43.

[0043] The opening 42 on the housing 4 is slidably fitted with the outer shell of the submersible pump 1, allowing the housing 4 to slide up and down along the outer shell of the submersible pump 1. The outer peripheral through hole 43 and the filter hole 41 together form a filtration channel. Water enters the interior of the housing 4 through the through hole 43 and the filter hole 41, and is then drawn out by the submersible pump 1. The sliding fit of the opening 42 provides guidance and space for the up and down movement of the housing 4. The outer peripheral through hole 43 increases the filtration area and, together with the filter hole 41, improves the filtration efficiency and reduces the entry of large particulate impurities into the submersible pump 1.

[0044] In an optional embodiment, the removal component 5 includes a filter screen 51 and a removal shaft 52. The filter screen 51 is connected to the impeller shaft of the submersible pump 1 via a connecting rod 53. The removal shaft 52 is vertically installed at the bottom of the filter screen 51 and is correspondingly arranged with the filter hole 41. The middle part of the filter screen 51 is fixedly connected to the sleeve 31.

[0045] The filter screen 51 of the removal component 5 is connected to the impeller shaft of the submersible pump 1 via the connecting rod 53. When the impeller rotates, it drives the filter screen 51 to rotate. The removal shaft 52 is vertically installed at the bottom of the filter screen 51, corresponding to the position of the filter hole 41 of the cover 4. The middle part of the filter screen 51 is fixed to the sleeve 31, which drives the cover 4 to rotate. During the rotation, it plays a dynamic filtration role and increases the filtration effect. The rotation of the filter screen 51 further filters impurities in the water. The removal shaft 52 automatically cleans the filter hole 41 as the filter screen 51 rotates.

[0046] In an optional embodiment, the mesh diameter of the filter screen 51 is smaller than the diameter of the filter hole 41 and the opening 42.

[0047] The mesh diameter of filter screen 51 is smaller than that of filter hole 41 and through hole 43. When water enters the housing 4 through filter hole 41 and through hole 43, it needs to be filtered again through filter screen 51. Larger particles of impurities are blocked on the outside of filter screen 51. The dual filtration design further intercepts impurities, protects the impeller of submersible pump 1 from wear by large particles, and extends the service life of the equipment.

[0048] In an optional embodiment, the top of the filter screen 51 is rotatably connected to the inlet of the submersible pump 1.

[0049] The top of the filter screen 51 is rotatably connected to the inlet of the submersible pump 1, ensuring that the top of the filter screen 51 and the inlet maintain a smooth rotational fit when the filter screen 51 rotates with the impeller shaft.

[0050] The embodiments of the present utility model have been described above, but the present embodiments are not limited to the specific implementation methods described above. The specific implementation methods described above are merely illustrative and not restrictive. Those skilled in the art can make many other forms under the guidance of the present embodiments, all of which are within the protection scope of the present embodiments.

Claims

1. A drainage structure for a foundation pit in a hydraulic engineering project, characterized in that, Includes a submersible pump (1), a buoyancy component (2), a recovery component (3), a housing (4), and a removal component (5); The buoyancy component (2) is installed on the submersible pump (1) to make the submersible pump (1) float up and extract water during drainage. The removal component (5) is located at the suction point of the submersible pump (1) and is driven by the submersible pump (1); The housing (4) is provided with filter holes (41). The removal component (5) is connected to the housing (4) through the return component (3) so that the housing (4) is rotated for filtration when the submersible pump (1) is started. As the filter holes (41) on the housing (4) become blocked, the housing (4) is drawn and moves toward the removal component (5) and is cleaned by the cleaning part of the removal component (5).

2. The drainage structure for a foundation pit in a hydraulic engineering project according to claim 1, characterized in that: The buoyancy component (2) includes a float box (21), which is mounted on the submersible pump (1).

3. The drainage structure for a foundation pit in a hydraulic engineering project according to claim 2, characterized in that: The pontoon (21) is fixedly connected to a support rod (22), and the bottom end of the support rod (22) forms a support part (23).

4. The drainage structure for a foundation pit in a hydraulic engineering project according to claim 1, characterized in that: The recovery component (3) includes a sleeve (31), a spring (32) and a moving rod (33). One end of the sleeve (31) is closed and connected to the removal component (5). The other end of the sleeve (31) is inserted by the moving rod (33), and the moving rod (33) is connected to the closed end of the sleeve (31) through the spring (32).

5. A drainage structure for a foundation pit in a hydraulic engineering project according to any one of claims 1-4, characterized in that: The housing (4) includes an upwardly formed opening (42), and the opening (42) is slidably fitted with the outer shell of the submersible pump (1). The outer periphery of the housing (4) is provided with a through hole (43).

6. A drainage structure for a foundation pit in a water conservancy project according to claim 5, characterized in that: The removal component (5) includes a filter screen (51) and a removal shaft (52). The filter screen (51) is connected to the impeller shaft of the submersible pump (1) via a connecting rod (53). The removal shaft (52) is vertically installed at the bottom of the filter screen (51) and is correspondingly set with the filter hole (41). The middle part of the filter screen (51) is fixedly connected to the sleeve (31).

7. A drainage structure for a foundation pit in a hydraulic engineering project according to claim 6, characterized in that: The mesh diameter of the filter screen (51) is smaller than the diameter of the filter hole (41) and the opening (42).

8. A drainage structure for a foundation pit in a hydraulic engineering project according to claim 7, characterized in that: The top of the filter screen (51) is rotatably connected to the inlet of the submersible pump (1).

Images