Dewatering and drainage device for foundation pit of bridge culvert

Abstract

The utility model discloses a bridge culvert foundation pit dewatering and drainage device which comprises an outer shell, the outer shell comprises a box body, the box body is of a hollow square structure, access holes are symmetrically formed in the two sides of the top of the box body, a first installation opening is formed in the center of the top of the box body, and a second installation opening is formed in the center of the top of the box body. A sealing cover matched with the access hole is hinged to the top of the box body, and a water outlet is formed in the bottom of one side of the box body. The purification efficiency of foundation pit dewatering and drainage is remarkably improved through a multi-stage filtering structure, accumulated water is sequentially filtered through the arranged primary filtering groove, the cyclone separator and the secondary filter, large particles and fine impurities are intercepted through the first filtering net and the second filtering net respectively, and sediment is separated through the cyclone separator by means of centrifugal force; impurities with different particle sizes are effectively removed through the grading design, the blocking problem caused by traditional single filtering is avoided, it is guaranteed that the quality of drained water reaches the standard, and the high requirement for water quality in bridge culvert construction is met.

Description

Technical Field

[0001] This utility model relates to the field of drainage technology, and in particular to a dewatering and drainage device for bridge and culvert foundation pits. Background Technology

[0002] In bridge and culvert construction, pit dewatering and drainage are crucial for ensuring project quality and safety. Current technologies commonly use pit dewatering and drainage devices, primarily including pump systems and simple filtration equipment. Pump systems use submersible or centrifugal pumps to extract water from the pit, often discharging it directly to a designated area via pipelines. Simple filtration equipment typically employs single-layer filters or sedimentation tanks to remove silt and impurities from the water. These devices, to a certain extent, meet the needs of pit drainage and are widely used in bridge and culvert construction. However, existing equipment is usually simply designed with limited functionality, making it difficult to simultaneously achieve both drainage efficiency and water purification. Furthermore, it often relies on external power or manual operation, thus limiting its applicability.

[0003] However, existing technologies have significant drawbacks, particularly in bridge and culvert foundation pit drainage scenarios. First, single-stage filtration structures struggle to effectively separate impurities of different particle sizes, leading to easy blockage of drainage pipes or substandard effluent quality, impacting subsequent treatment. Second, the drainage path lacks optimized design, resulting in poor water flow guidance and potential water stagnation or internal equipment buildup. Furthermore, existing devices generally lack real-time monitoring capabilities, making it impossible to promptly grasp the drainage status and increasing the difficulty of construction management. Utility Model Content

[0004] The purpose of this utility model is to overcome the shortcomings of the existing technology and propose a bridge and culvert foundation pit dewatering and drainage device.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A bridge culvert foundation pit dewatering and drainage device includes an outer shell, which comprises a box-shaped hollow cuboid structure. Symmetrical inspection ports are provided on both sides of the top of the box, and a first installation port is located at the center of the top of the box. A sealing cover matching the inspection port is hinged to the top of the box, and a drain outlet is located at the bottom of one side of the box. A primary filter tank is sealed within the first installation port and connected to the inlet of a cyclone separator via a drain pipe. The cyclone separator is fixed inside the box. A secondary filter is located inside the box and positioned on one side of the drain outlet. A drain pipe is installed on the drain outlet.

[0007] Preferably, the outer casing further includes several steps on both sides of the casing and a flow guide block at the bottom of the casing. The side of the flow guide block near the drain outlet has a sloping structure, and the flow guide block is located directly below the drain outlet of the cyclone separator.

[0008] Preferably, the primary filtration tank includes a water collection tank, the bottom of which has a funnel structure, and a cyclone separator connected to a drainage pipe is provided at the bottom of the water collection tank.

[0009] Preferably, the primary filter tank further includes support blocks disposed at the four inner corners of the water collection tank, and a first filter screen is attached to the support blocks.

[0010] Preferably, the secondary filter includes a baffle plate, with first guide rods provided on both sides of the bottom edge of the baffle plate, and a flow detector connected to the baffle plate. The baffle plate forms a sealed structure with the inner wall of the housing, and the upper and lower sides of the baffle plate are connected through the flow detector. The flow detector is a pipeline type, and the signal output end of the flow detector is connected to a remote terminal.

[0011] Preferably, the secondary filter further includes second guide rods fixedly disposed on both sides of the housing, with the two second guide rods corresponding to the two first guide rods, and a gap forming between the first guide rods and the second guide rods, and a second filter screen inserted between the first guide rods and the second guide rods.

[0012] This utility model has the following beneficial effects:

[0013] 1. This utility model significantly improves the purification efficiency of foundation pit dewatering and drainage through a multi-stage filtration structure. The primary filter tank, cyclone separator and secondary filter are set up to filter the accumulated water in sequence. The first filter screen and the second filter screen intercept large particles and fine impurities respectively. The cyclone separator uses centrifugal force to separate mud and sand. This graded design effectively removes impurities of different particle sizes, avoids the clogging problem caused by traditional single filtration, ensures that the drainage water quality meets the standards, and is suitable for the high water quality requirements in bridge and culvert construction.

[0014] 2. This utility model optimizes the drainage path and improves discharge efficiency by setting up a guide block and a drainage pipe. The inclined structure of the guide block is located below the drain outlet of the cyclone separator, which guides the water flow smoothly to the drain outlet. The drainage pipe further directs the discharge of accumulated water. This structure reduces water retention inside the box, increases the drainage speed, solves the defect of poor water flow in traditional devices, and ensures the smooth progress of foundation pit construction.

[0015] 3. This utility model realizes intelligent monitoring of the drainage process through a flow detector. The pipeline flow detector is set on the water baffle to monitor the water flow rate and is connected to a remote terminal through the signal output terminal. This design enables construction personnel to grasp the drainage status in real time and promptly detect abnormalities such as blockage or overflow. Compared with traditional drainage equipment without monitoring, it significantly improves the efficiency and safety of foundation pit dewatering management and facilitates remote command and adjustment. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of the drainage device;

[0017] Figure 2 This is a schematic diagram of the internal structure of the drainage device;

[0018] Figure 3 This is a schematic diagram of the internal structure of the outer shell;

[0019] Figure 4 This is a schematic diagram of the exploded structure of the primary filter tank;

[0020] Figure 5 This is a schematic diagram of the secondary filter structure.

[0021] In the diagram: 1. Outer shell; 101. Housing; 102. Inspection port; 103. First mounting port; 104. Sealing cover; 105. Steps; 106. Flow guide block; 107. Drain outlet; 2. Primary filter tank; 201. Water collection tank; 202. Flow guide outlet; 203. Support block; 204. First filter screen; 3. Drainage pipe; 4. Cyclone separator; 5. Secondary filter; 501. Water baffle; 502. First guide rod; 503. Flow detector; 504. Second guide rod; 505. Second filter screen; 6. Drain pipe. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0023] Reference Figure 1-5A bridge culvert foundation pit dewatering and drainage device includes an outer shell 1, which includes a box 101. The box 101 is a hollow cuboid structure. Inspection ports 102 are symmetrically opened on both sides of the top of the box 101. A first installation port 103 is opened at the center of the top of the box 101. A sealing cover 104 matching the inspection port 102 is hinged to the top of the box 101. A drain port 107 is opened at the bottom of one side of the box 101. A primary filter tank 2 is sealed in the first installation port 103. The primary filter tank 2 is connected to the inlet of a cyclone separator 4 through a diversion pipe 3. The cyclone separator 4 is fixed inside the box 101. A secondary filter 5 is installed inside the box 101 and is located on one side of the drain port 107. A drain pipe 6 is installed on the drain port 107.

[0024] In this embodiment, the housing 101 of the outer casing 1 is a hollow cuboid with an inspection port 102 and a first installation port 103 at the top, which, together with the sealing cover 104, facilitates maintenance and sealing. The bottom drain port 107 drains accumulated water. The primary filter tank 2 is sealed in the first installation port 103, and the water flow is introduced into the cyclone separator 4 through the diversion pipe 3. Large particles of impurities are initially separated by centrifugal force. The cyclone separator 4 is fixed inside the housing 101 to ensure stable filtration. The secondary filter 5 is set on one side of the drain port 107 to further purify the water. The drain pipe 6 is connected to the drain port 107 to discharge the treated water in a directional manner. This structure effectively removes mud and sand impurities from the accumulated water through multi-stage filtration and optimized drainage path, improving water quality and drainage efficiency. It solves the problems of blockage and stagnation in the treatment of water accumulation in foundation pits, and is suitable for bridge and culvert construction environments, ensuring project safety and progress.

[0025] In this utility model, the outer shell 1 also includes several steps 105 arranged on both sides of the box 101, and a guide block 106 arranged at the bottom of the box 101. The side of the guide block 106 near the drain outlet 107 has a sloping structure, and the guide block 106 is located directly below the drain outlet of the cyclone separator 4.

[0026] In this embodiment, the outer casing 1 includes several steps 105 on both sides of the housing 101 and a guide block 106 at the bottom. The steps 105 are located on both sides of the housing 101, providing access for operators to go up and down, facilitating the inspection and maintenance of internal components, and improving the convenience and safety of construction operations. The guide block 106 is located at the bottom of the housing 101, and its side near the drain outlet 107 is designed as a sloping structure, directly facing the drain outlet of the cyclone separator 4. It can effectively receive the water flow discharged from the cyclone separator 4 and guide it to the drain outlet 107 through the slope, reducing water stagnation and siltation. This structure optimizes the water flow path, enhances drainage smoothness, and improves the overall filtration and drainage stability in cooperation with the cyclone separator 4, providing an efficient and reliable solution for dewatering bridge culvert foundation pits.

[0027] In this utility model, the primary filter tank 2 includes a water collection tank 201, the bottom of which is a funnel structure, and a cyclone separator 4 connected to the diversion pipe 3 is provided at the bottom of the water collection tank 201.

[0028] In this embodiment, the primary filtration tank 2 includes a water collection tank 201, which has a funnel structure at the bottom and is connected to the drainage pipe 3 and the cyclone separator 4. The funnel structure of the water collection tank 201 can concentrate the water flowing into the foundation pit, allowing the water flow to naturally converge to the bottom, avoiding the dispersion or retention of impurities, thereby improving the guidance of the water flow. The bottom of the water collection tank 201 is directly connected to the drainage pipe 3, which accurately guides the water into the cyclone separator 4. The cyclone separator 4 separates large particles of silt and impurities through centrifugal force, achieving preliminary filtration. This structural design makes full use of the funnel shape and the physical characteristics of cyclone separation, ensuring that the water is effectively pretreated before entering the subsequent filtration stage, reducing the risk of pipe blockage, and laying the foundation for smooth drainage and water purification of bridge culvert foundation pits.

[0029] In this utility model, the primary filter tank 2 also includes support blocks 203 disposed at the four inner corners of the water collection tank 201, and a first filter screen 204 is attached to the support blocks 203.

[0030] In this embodiment, the additional structure of the primary filter tank 2, through the design of the support block 203 and the first filter screen 204, further enhances the effect and stability of the preliminary filtration. Based on the water collection tank 201, the primary filter tank 2 adds support blocks 203 located at the four inner corners of the water collection tank 201. These support blocks 203 provide a stable mounting platform for the first filter screen 204. The first filter screen 204 covers the water collection tank 201, effectively intercepting larger particulate impurities in the accumulated water, such as stones or mud clumps, preventing them from directly entering the drainage pipe 3 and the cyclone separator 4, thereby reducing the burden and clogging risk of subsequent filtration equipment. This structure, through the support block 203, ensures the secure installation and filtration area of ​​the first filter screen 204, optimizes the primary filtration effect, and provides a reliable guarantee for the smooth dewatering and drainage of bridge culvert foundation pits.

[0031] In this utility model, the secondary filter 5 includes a baffle plate 501. First guide rods 502 are provided on both sides of the bottom edge of the baffle plate 501. A flow detector 503 is connected to the baffle plate 501. The baffle plate 501 and the inner wall of the housing 101 form a sealed structure. The upper and lower sides of the baffle plate 501 are connected through the flow detector 503. The flow detector 503 is a pipe type. The signal output end of the flow detector 503 is connected to a remote terminal.

[0032] In this embodiment, the secondary filter 5's structural design, through the combination of a baffle plate 501 and a pipeline flow detector 503, achieves the functions of water flow control, flow monitoring, and intelligent management. The secondary filter 5 includes a baffle plate 501, with first guide rods 502 on both sides of its bottom providing structural support. The baffle plate 501 forms a sealed structure with the inner wall of the housing 101, forcing water to flow only through the pipeline flow detector 503. The flow detector 503 connects the upper and lower sides of the baffle plate 501, monitors the drainage flow in real time, and connects to a remote terminal through a signal output terminal to transmit data to the construction management system. The design not only controls the water flow direction through the baffle plate 501, but also realizes intelligent monitoring of the drainage process through the flow detector 503. When the drainage passes through the pipeline flow detector 503, it detects the water flow, indicating that the secondary filter 5 is blocked. The drainage can only be discharged through the pipeline of the pipeline flow detector 503. Based on the flow information fed back by the flow detector 503, the construction management center can determine the blockage of the secondary filter 5 and then determine whether it needs to be cleaned. This improves the efficiency and safety of dewatering and drainage in bridge culvert foundation pits, and facilitates timely detection of abnormalities and optimization of construction management.

[0033] In this utility model, the secondary filter 5 also includes second guide rods 504 fixedly disposed on both sides of the housing 101. The two second guide rods 504 correspond to the two first guide rods 502, and a gap is formed between the first guide rods 502 and the second guide rods 504. A second filter screen 505 is inserted between the first guide rods 502 and the second guide rods 504.

[0034] In this embodiment, the additional structure of the secondary filter 5, through the ingenious design of the second guide rod 504 and the second filter screen 505, effectively improves the fine filtration capability and ease of operation in the drainage process. The secondary filter 5 adds a second guide rod 504 fixed on both sides of the housing 101, which corresponds to the first guide rod 502 on the baffle plate 501, forming a stable parallel support structure. The gap design between the two sets of guide rods facilitates the insertion of the second filter screen 505. The second filter screen 505 can capture fine particles that are not completely removed by the cyclone separator 4, further purifying the water quality and ensuring the cleanliness of the discharged water. This structure not only improves the filtration effect of bridge culvert foundation pit dewatering drainage through the second filter screen 505, but also provides efficient and reliable drainage guarantee for construction due to its detachability, making maintenance and replacement convenient.

[0035] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A bridge culvert foundation pit dewatering drainage device, characterized in that, Include: The outer shell (1) includes a box (101), the box (101) is a hollow four square structure, the top of the box (101) is symmetrically provided with an access hole (102), the top of the box (101) is provided with a first installation opening (103), the top of the box (101) is hingedly installed with a sealing cover (104) matched with the access hole (102), the bottom of one side of the box (101) is provided with a drain port (107); The primary filter tank (2) is sealingly arranged in the first installation opening (103), the primary filter tank (2) is communicated with the water inlet of the cyclone separator (4) through the drainage pipe (3), and the cyclone separator (4) is fixed in the inside of the box (101); The secondary filter (5) is arranged in the inside of the box (101), and the secondary filter (5) is arranged on one side of the drain port (107); The drain pipe (6) is arranged on the drain port (107).

2. The bridge culvert foundation dewatering drainage device according to claim 1, characterized in that, The outer shell (1) further comprises a plurality of step ladders (105) arranged on both sides of the box (101), and a flow guide block (106) arranged at the bottom of the box (101), one side of the flow guide block (106) close to the drain port (107) is a slope structure, and the flow guide block (106) is located directly below the drain port of the cyclone separator (4).

3. The bridge culvert foundation dewatering drainage device according to claim 1, characterized in that, The primary filter tank (2) comprises a water collecting tank (201), the bottom of the water collecting tank (201) is a funnel structure, and the bottom of the water collecting tank (201) is provided with a cyclone separator (4) communicated with the drainage pipe (3).

4. The bridge culvert foundation dewatering drainage device according to claim 3, characterized in that, The primary filter tank (2) further comprises a support block (203) arranged at four inner corners of the water collecting tank (201), and a first filter screen (204) is overlapped on the support block (203).

5. The bridge culvert foundation dewatering drainage device according to claim 1, characterized in that, The secondary filter (5) comprises a water baffle (501), the water baffle (501) is provided with a first guide rod (502) on both sides of the bottom edge, the water baffle (501) is provided with a flow detector (503) in communication, the water baffle (501) and the inner wall of the box (101) form a sealing structure, the water baffle (501) is communicated through the flow detector (503) on both sides, the flow detector (503) is a pipeline type, and the signal output end of the flow detector (503) is connected with a remote terminal.

6. The bridge culvert foundation dewatering drainage device according to claim 5, characterized in that, The secondary filter (5) further comprises a second guide rod (504) fixedly arranged on both sides of the box (101), the two second guide rods (504) correspond to the two first guide rods (502), and the first guide rod (502) and the second guide rod (504) form a gap, and the second filter screen (505) is inserted between the first guide rod (502) and the second guide rod (504).

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