A type of foundation pit dewatering filter pipe cover plate

Abstract

This application relates to a cover plate for a foundation pit dewatering filter pipe, belonging to the field of foundation pit engineering technology. It includes a dewatering pipe and a cover plate module. Through the cooperation of the main cover plate and the expansion cover plate in the cover plate module, using expansion holes, sealing connection frames, and expansion connection bolts, the coverage area can be flexibly adjusted according to the actual needs of the foundation pit, solving the problem that existing fixed sizes cannot adapt to different foundation pit scenarios. The first sealing waterproof ring on the inner wall of the opening, the second sealing waterproof ring on the bottom surface of the positioning plate, and the water-stop ring form a multi-seal structure, effectively preventing the infiltration of mud and water into the foundation pit, improving the shortcomings of existing cover plates with insufficient single-seal protection. The matching of the guide ring and guide groove in the positioning module achieves precise installation guidance, and the cooperation of the positioning bolts and positioning holes ensures a stable connection and balanced force, solving the problems of difficult positioning and easy loosening and deformation of existing cover plates. The stable steel plate on the outer surface of the dewatering pipe enhances its support stability within the foundation pit.

Description

Technical Field

[0001] This application relates to the field of foundation pit engineering technology, and in particular to a foundation pit dewatering filter pipe cover. Background Technology

[0002] In the construction of foundation pit projects, in order to ensure the dryness of the excavation surface and the stability of the structure, a dewatering system needs to be built. The dewatering pipe and the filter pipe constitute the core water conveyance and filtration unit. The filter pipe can intercept mud and sand impurities in the foundation pit soil layer to prevent them from entering the dewatering pipe and causing pipe blockage or water pump damage. The cover plate module is the key protection of the connection between the dewatering pipe and the filter pipe. It needs to take into account functions such as sealing, positioning, adaptability and ease of maintenance.

[0003] However, existing foundation pit dewatering filter pipe covers have technical defects in practical applications and are difficult to meet construction needs. Most existing covers are designed with fixed sizes and cannot flexibly adjust the coverage area according to the actual dewatering range of the foundation pit and the arrangement density of the filter pipes. When the size of the foundation pit or the spacing of the filter pipes changes, different specifications of covers need to be customized, which not only increases construction costs but also prolongs the equipment preparation cycle. The versatility is seriously insufficient. In order to solve the above problems, a foundation pit dewatering filter pipe cover is proposed. Utility Model Content

[0004] The purpose of this application is to provide a cover plate for a foundation pit dewatering filter pipe, which can flexibly adjust the size of the cover plate according to the site conditions to meet different usage requirements and solve the problems mentioned in the background art.

[0005] The technical solution of the foundation pit dewatering filter pipe cover provided in this application is as follows: A foundation pit dewatering filter pipe cover includes a dewatering pipe and a cover plate module. The bottom end of the dewatering pipe is threaded with a filter pipe. A positioning module is provided between the dewatering pipe and the cover plate module. The cover plate module includes a main cover plate and an expansion cover plate. The main cover plate has an opening inside for guiding the dewatering pipe through. A first sealing waterproof ring is fixedly connected to the inner wall of the opening. The inner wall of the first sealing waterproof ring is in contact with the outer surface of the dewatering pipe. The edge of the main cover plate has evenly distributed expansion holes. A sealing connection frame is fixedly connected to the upper surface of the expansion cover plate. Evenly distributed expansion connection bolts are installed on the inner wall of the sealing connection frame. The expansion cover plate and the main cover plate are fixedly connected by expansion connection bolts and expansion holes.

[0006] By adopting the above technical solution, on the one hand, the main cover plate adapts to the installation requirements of the dewatering pipe through the opening. The first sealing waterproof ring on the inner wall of the opening can tightly fit the outer surface of the dewatering pipe, filling the gap between the two and optimizing the connection quality between the main cover plate and the dewatering pipe. On the other hand, the expansion holes on the edge of the main cover plate cooperate with the sealing connection frame and expansion connection bolts of the expansion cover plate. According to the actual dewatering range of the foundation pit and the layout requirements of the filter pipe, the expansion cover plate can be flexibly added, thereby changing the overall coverage area and solving the problem that the existing size is fixed and cannot be adapted to different foundation pit scenarios. At the same time, the sealing connection frame can ensure the sealing of the connection between the main cover plate and the expansion cover plate, preventing impurities from entering from the splice and further improving the protection effect.

[0007] Preferably, a sturdy steel plate is fixedly connected to the outer surface of the rainwater pipe.

[0008] By adopting the above technical solution, the steel plate is fixed to the outer surface of the dewatering pipe, which can improve the support stability of the dewatering pipe in the foundation pit and avoid the dewatering pipe from tilting or shifting due to water flow impact and soil compression during the dewatering process. This ensures the relative position stability of the cover plate module, positioning module and dewatering pipe, and solves the problem of poor stability of the dewatering pipe in the existing structure, which leads to misalignment of the cover plate installation.

[0009] Preferably, the positioning module includes a positioning plate fixedly connected to the outer surface of the rainwater pipe, and a guide ring is fixedly connected to the bottom surface of the positioning plate.

[0010] By adopting the above technical solution, the positioning plate is fixed on the outer surface of the downpipe, providing a stable installation base for other components of the positioning module. At the same time, it can also serve as a transitional connection structure between the cover plate module and the downpipe, avoiding wear caused by direct contact between the cover plate module and the downpipe. The guide ring on the bottom surface of the positioning plate can provide precise installation guidance for the cover plate module during the assembly of the cover plate module and the positioning module, guiding the cover plate module to quickly align with the positioning module, avoiding misalignment during the assembly process, solving the problem of difficult positioning and repeated adjustments required during the installation of existing cover plates, and improving installation efficiency.

[0011] Preferably, the upper surface of the main cover plate is provided with a guide groove that matches the guide ring.

[0012] By adopting the above technical solution, the guide groove on the main cover plate is compatible with the guide ring of the positioning plate. During assembly, the guide ring can be embedded in the guide groove, which not only further enhances the installation guidance effect and ensures precise docking between the main cover plate and the positioning module, but also restricts the horizontal displacement between the main cover plate and the positioning module after assembly. This prevents the two from sliding relative to each other due to water flow vibration and soil disturbance during use, ensuring the installation stability of the cover plate module. At the same time, the cooperation between the guide ring and the guide groove can also fill the gap between the two, forming a preliminary waterproof barrier and helping to improve the overall sealing effect.

[0013] Preferably, a second sealing and waterproof ring is fixedly connected to the bottom surface of the positioning plate. The second sealing and waterproof ring is located inside the guide ring, and the bottom surface of the second sealing and waterproof ring is in contact with the upper surface of the main cover plate.

[0014] By adopting the above technical solution, the second sealing and waterproof ring on the bottom surface of the positioning plate is located inside the guide ring and is in close contact with the upper surface of the main cover plate. It can form a secondary sealing structure between the positioning module and the cover plate module, forming a double seal with the first sealing and waterproof ring at the opening. This prevents mud and water in the pit from seeping in from the contact surface between the positioning module and the cover plate module, solving the problem of insufficient protection of the existing single sealing structure of the cover plate. At the same time, the second sealing and waterproof ring can also buffer the collision between the positioning module and the cover plate module, reduce the wear caused by vibration, and extend the service life of the components.

[0015] Preferably, a water-stop ring is fixedly connected to the bottom surface of the positioning plate, and the water-stop ring is located outside the guide ring.

[0016] By adopting the above technical solution, the water-stop ring on the bottom surface of the positioning plate is located outside the guide ring, which can form a water-stop barrier on the outer edge of the positioning module and the cover plate module, preventing water and mud from the pit from seeping in from the outer joint of the two, avoiding external water from corroding the connecting parts of the positioning module, and solving the problem that the connecting parts in the existing structure are easily corroded by mud and water, leading to loosening; at the same time, the water-stop ring can also restrict the flow of water between the positioning module and the cover plate module, reduce the impact of water flow on the sealing structure, and ensure the stable sealing effect of the first sealing waterproof ring and the second sealing waterproof ring.

[0017] Preferably, the positioning plate is equipped with evenly distributed positioning bolts at its edge, and the bottom ends of the multiple positioning bolts all penetrate the positioning plate and the water-stop ring.

[0018] By adopting the above technical solution, the positioning module and the cover plate module can be firmly connected, avoiding separation due to external forces during use. This solves the problem of easy loosening of existing cover plates using welding or single snap-fit ​​connections. At the same time, the bolt connection method is easier to disassemble than welding. When it is necessary to clean the filter tube or replace the cover plate components, simply unscrew the positioning bolts to separate the positioning module and the cover plate module. The operation is convenient and does not require complicated tools, adapting to the working needs of the narrow space of the foundation pit and improving maintenance efficiency.

[0019] Preferably, the upper surface of the main cover plate is provided with evenly distributed positioning holes, and the positioning plate is fixedly connected to the main cover plate by positioning bolts and positioning holes.

[0020] By adopting the above technical solution, the positioning holes on the main cover plate cooperate with the positioning bolts to accurately position the installation position of the positioning bolts, ensuring that multiple positioning bolts are evenly distributed on the edge of the positioning plate, so that the connection between the positioning module and the cover plate module is evenly stressed, avoiding excessive local stress that could cause deformation of the main cover plate or positioning plate, and solving the problem of uneven stress and easy damage in the existing connection structure.

[0021] In summary, this application includes at least one of the following beneficial technical effects:

[0022] This type of foundation pit dewatering filter pipe cover, through the cooperation of the main cover plate and the expansion cover plate in the cover plate module with expansion holes, sealing connection frame and expansion connection bolts, can flexibly adjust the coverage area according to the actual needs of the foundation pit, solving the problem that the existing fixed size cannot be adapted to different foundation pit scenarios. The first sealing waterproof ring on the inner wall of the opening, the second sealing waterproof ring on the bottom surface of the positioning plate and the water-stop ring form a multi-seal structure, effectively blocking the infiltration of mud and sand and muddy water in the foundation pit, improving the defects of the existing cover plate's single seal protection. The matching of the guide ring and the guide groove in the positioning module realizes precise installation guidance, and the cooperation of the positioning bolt and the positioning hole ensures a stable connection and balanced force, solving the problems of difficult positioning and easy loosening and deformation of the existing cover plate. The stable steel plate on the outer surface of the dewatering pipe improves its support stability in the foundation pit. At the same time, the bolt connection method facilitates disassembly, and the filter pipe can be cleaned or parts replaced without complicated tools, significantly improving the convenience of use and overall practicality. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the overall planar structure of this application;

[0024] Figure 2 This is a schematic diagram of the overall structure of this application from below;

[0025] Figure 3 This is a top view of the overall structure of this application;

[0026] Figure 4 This is a schematic diagram of the overall exploded structure of this application;

[0027] Figure 5 This is a partial cross-sectional structural diagram of this application.

[0028] In the picture:

[0029] 1. Downwater pipe; 2. Filter pipe; 3. Cover plate module; 301. Main cover plate; 302. Through port; 303. First sealing waterproof ring; 304. Expansion hole; 305. Expansion cover plate; 306. Sealing connection frame; 307. Expansion connection bolt; 4. Positioning module; 401. Positioning plate; 402. Guide ring; 403. Second sealing waterproof ring; 404. Water-stop ring; 405. Positioning bolt; 406. Guide groove; 407. Positioning hole; 5. Stabilizing steel plate. Detailed Implementation

[0030] The following is in conjunction with the appendix Figure 1 - Appendix Figure 5 This application will be described in further detail below.

[0031] Example 1: A filter pipe cover for foundation pit dewatering, referring to... Figure 1 and Figure 2 The system includes a downwater pipe 1 and a cover plate module 3. The bottom end of the downwater pipe 1 is threadedly connected to a filter pipe 2. By defining the connection between the downwater pipe 1 and the filter pipe 2, the installation and removal of the filter pipe 2 can be facilitated, which is beneficial for subsequent cleaning or replacement of the filter pipe 2. It is convenient and practical. A positioning module 4 is provided between the downwater pipe 1 and the cover plate module 3. A stabilizing steel plate 5 is fixedly connected to the outer surface of the downwater pipe 1. The stabilizing steel plate 5 is fixed to the outer surface of the downwater pipe 1, which can improve the support stability of the downwater pipe 1 in the foundation pit and prevent the downwater pipe 1 from tilting or displacing due to water flow impact and soil compression during the downwater process. This ensures the relative position stability of the cover plate module 3, the positioning module 4 and the downwater pipe 1, and solves the problem of poor downwater pipe stability leading to misalignment of the cover plate in the existing structure.

[0032] Reference Figure 2 , Figure 3 and Figure 4 The cover plate module 3 includes a main cover plate 301 and an expansion cover plate 305. The main cover plate 301 has an opening 302 for guiding the downpipe 1 through. A first sealing waterproof ring 303 is fixedly connected to the inner wall of the opening 302. The inner wall of the first sealing waterproof ring 303 contacts the outer surface of the downpipe 1. The edge of the main cover plate 301 has evenly distributed expansion holes 304. A sealing connection frame 306 is fixedly connected to the upper surface of the expansion cover plate 305. Evenly distributed expansion connection holes are installed on the inner wall of the sealing connection frame 306. Bolt 307, expansion cover plate 305 and main cover plate 301 are fixedly connected by expansion connecting bolt 307 and expansion hole 304. It should be noted that there can be multiple expansion cover plates 305, and the outer contour dimensions of multiple expansion cover plates 305 are different, but their inner wall dimensions are all adapted to the outer contour of the main cover plate 301. In this way, according to the site requirements, an appropriate size expansion cover plate 305 can be selected to be modularly connected with the main cover plate 301 to meet diverse usage requirements and solve the problems raised in the background technology.

[0033] Example 2: A filter pipe cover for foundation pit dewatering, referring to... Figure 3 , Figure 4 and Figure 5Based on the same concept as Embodiment 1 above, this embodiment proposes a positioning module 4 including a positioning plate 401 fixedly connected to the outer surface of the downpipe 1. A guide ring 402 is fixedly connected to the bottom surface of the positioning plate 401. The positioning plate 401 is fixed to the outer surface of the downpipe 1, providing a stable installation base for other components of the positioning module 4. At the same time, it can also serve as a transition connection structure between the cover plate module 3 and the downpipe 1, avoiding wear caused by direct contact between the cover plate module 3 and the downpipe 1. The guide ring 402 on the bottom surface of the positioning plate 401 can be used to connect the cover plate module 3 to the downpipe 1. When block 3 is assembled with positioning module 4, it provides precise installation guidance for cover plate module 3, guiding cover plate module 3 to quickly align with positioning module 4, avoiding misalignment during assembly, solving the problem of difficult positioning and repeated adjustments required during existing cover plate installation, and improving installation efficiency. The upper surface of main cover plate 301 has a guide groove 406 that matches the guide ring 402. The guide groove 406 on main cover plate 301 matches the guide ring 402 on positioning plate 401. During assembly, guide ring 402 can be embedded in guide groove 406, which not only further... The installation guidance effect is enhanced to ensure precise docking between the main cover plate 301 and the positioning module 4. It also restricts horizontal displacement between the main cover plate 301 and the positioning module 4 after assembly, preventing relative sliding due to water flow vibration or soil disturbance during use, thus ensuring the installation stability of the cover plate module 3. Simultaneously, the cooperation between the guide ring 402 and the guide groove 406 fills the gap between them, forming a preliminary waterproof barrier and further improving the overall sealing effect. A second sealing waterproof ring 403 is fixedly connected to the bottom surface of the positioning plate 401. The second sealing waterproof ring 403 is located inside the guide ring 402, and the bottom surface of the second sealing waterproof ring 403 is in contact with the upper surface of the main cover plate 301. The second sealing waterproof ring 403 on the bottom surface of the positioning plate 401 is located inside the guide ring 402 and is in close contact with the upper surface of the main cover plate 301. It can form a secondary sealing structure between the positioning module 4 and the cover plate module 3, and form a double seal with the first sealing waterproof ring 303 at the opening 302, preventing mud and sand and muddy water in the pit from seeping in from the contact surface between the positioning module 4 and the cover plate module 3.

[0034] Reference Figure 3 , Figure 4 and Figure 5A water-stop ring 404 is fixedly connected to the bottom surface of the positioning plate 401. The water-stop ring 404 is located outside the guide ring 402. The water-stop ring 404 on the bottom surface of the positioning plate 401 is located outside the guide ring 402, which can form a water-stop barrier at the outer edge of the positioning module 4 and the cover plate module 3, preventing water and mud from the pit from seeping in from the outer joint of the two, avoiding external water from corroding the connecting parts of the positioning module 4, and solving the problem of loosening caused by the corrosion of connecting parts by mud and water in the existing structure. The positioning plate 401 is equipped with evenly distributed positioning bolts 405. The bottom ends of multiple positioning bolts 405 penetrate the positioning plate 401 and the water-stop ring 404, which can firmly connect the positioning module 4 and the cover plate module 3, preventing the two from separating due to external force during use, and solving the problem of loosening caused by welding or single buckle connection of the existing cover plate; at the same time, the bolt connection method Compared to welding, this method is easier to disassemble. When it is necessary to clean the filter tube 2 or replace the cover plate component, simply unscrew the positioning bolts 405 to separate the positioning module 4 from the cover plate module 3. The operation is convenient and does not require complicated tools, adapting to the working requirements of the narrow space of the foundation pit and improving maintenance efficiency. The upper surface of the main cover plate 301 has evenly distributed positioning holes 407. The positioning plate 401 is fixedly connected to the main cover plate 301 through the positioning bolts 405 and the positioning holes 407. The positioning holes 407 on the main cover plate 301 cooperate with the positioning bolts 405 to accurately position the installation position of the positioning bolts 405, ensuring that multiple positioning bolts 405 are evenly distributed on the edge of the positioning plate 401, so that the connection between the positioning module 4 and the cover plate module 3 is evenly stressed, avoiding excessive local stress that could cause deformation of the main cover plate 301 or the positioning plate 401, and solving the problem of uneven stress and easy damage in the existing connection structure.

[0035] The implementation principle of this application embodiment is as follows: First, the bottom end of the downpipe 1 is fixed to the filter pipe 2 by threaded connection. Then, the guide ring 402 on the bottom surface of the positioning plate 401 is aligned with the guide groove 406 on the upper surface of the main cover plate 301 and embedded, so as to achieve precise alignment between the main cover plate 301 and the positioning module 4. Then, the positioning bolt 405 is passed through the positioning plate 401 and the water-stop ring 404 in sequence and screwed into the positioning hole 407 of the main cover plate 301, so as to complete the firm connection between the positioning module 4 and the main cover plate 301. At this time, the first sealing waterproof ring 303 on the inner wall of the opening 302 of the main cover plate 301 is tightly attached to the outer surface of the downpipe 1, the second sealing waterproof ring 403 on the bottom surface of the positioning plate 401 is in contact with the upper surface of the main cover plate 301, and the water-stop ring 404 forms a barrier on the outer edges of the two, together forming a barrier. The system features a multi-layered sealing structure to prevent the infiltration of mud and muddy water into the foundation pit. If the coverage area needs to be adjusted according to the dewatering range of the foundation pit or the density of the filter pipes 2, the sealing connection frame 306 of the expansion cover plate 305 can be fixed to the expansion hole 304 on the edge of the main cover plate 301 by the expansion connection bolts 307, thus flexibly expanding the overall coverage area of ​​the cover plate. During the dewatering process, after the water in the foundation pit is intercepted by the filter pipes 2, the clean water enters the dewatering pipe 1 to achieve drainage. The multi-layered sealing structure ensures that impurities do not seep in from the splicing seams or connection gaps. During maintenance, the positioning module 4 and the cover plate module 3 can be separated simply by unscrewing the positioning bolts 405, and the expansion cover plate 305 can be disassembled by unscrewing the expansion connection bolts 307, which facilitates the cleaning of the filter pipes 2 or the replacement of the cover plate components, ensuring the continuous and stable operation of the entire system.

Claims

1. A cover plate for a foundation pit dewatering filter pipe, comprising a dewatering pipe (1) and a cover plate module (3), characterized in that: The bottom end of the downpipe (1) is threadedly connected to a filter pipe (2). A positioning module (4) is provided between the downpipe (1) and the cover plate module (3). The cover plate module (3) includes a main cover plate (301) and an extension cover plate (305). The main cover plate (301) has an opening (302) inside for guiding the downpipe (1) through. A first sealing waterproof ring (303) is fixedly connected to the inner wall of the opening (302). The inner wall of the main cover plate (301) is in contact with the outer surface of the rainwater pipe (1). The edge of the main cover plate (301) is provided with evenly distributed expansion holes (304). The upper surface of the expansion cover plate (305) is fixedly connected with a sealing connection frame (306). The inner wall of the sealing connection frame (306) is installed with evenly distributed expansion connection bolts (307). The expansion cover plate (305) and the main cover plate (301) are fixedly connected by expansion connection bolts (307) and expansion holes (304).

2. The foundation pit dewatering filter pipe cover plate according to claim 1, characterized in that: A sturdy steel plate (5) is fixedly connected to the outer surface of the rainwater pipe (1).

3. The foundation pit dewatering filter pipe cover plate according to claim 1, characterized in that: The positioning module (4) includes a positioning plate (401) fixedly connected to the outer surface of the rainwater pipe (1), and a guide ring (402) is fixedly connected to the bottom surface of the positioning plate (401).

4. The foundation pit dewatering filter pipe cover plate according to claim 3, characterized in that: The upper surface of the main cover plate (301) is provided with a guide groove (406) that is compatible with the guide ring (402).

5. A foundation pit dewatering filter pipe cover plate according to claim 3, characterized in that: The bottom surface of the positioning plate (401) is fixedly connected to a second sealing waterproof ring (403). The second sealing waterproof ring (403) is located inside the guide ring (402), and the bottom surface of the second sealing waterproof ring (403) is in contact with the upper surface of the main cover plate (301).

6. The foundation pit dewatering filter pipe cover plate according to claim 3, characterized in that: A water-stop ring (404) is fixedly connected to the bottom surface of the positioning plate (401), and the water-stop ring (404) is located outside the guide ring (402).

7. The foundation pit dewatering filter pipe cover plate according to claim 6, characterized in that: The positioning plate (401) is equipped with evenly distributed positioning bolts (405) at its edge, and the bottom ends of the multiple positioning bolts (405) penetrate the positioning plate (401) and the water-stop ring (404).

8. The foundation pit dewatering filter pipe cover plate according to claim 7, characterized in that: The upper surface of the main cover plate (301) is provided with evenly distributed positioning holes (407), and the positioning plate (401) is fixedly connected to the main cover plate (301) by positioning bolts (405) and positioning holes (407).

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