A foundation pit drainage device for building construction

By designing the foundation pit pumping components and sludge sedimentation and removal components, combined with the electric lifting rod and water level detector, the problem of sludge blockage was solved, achieving efficient foundation pit drainage and improving the system's stability and intelligence.

CN224281337UActive Publication Date: 2026-05-26CHANGYUAN URBAN & RURAL CONSTR CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
CHANGYUAN URBAN & RURAL CONSTR CO LTD
Filing Date
2025-07-02
Publication Date
2026-05-26

AI Technical Summary

Technical Problem

Existing deep foundation pit drainage systems in building construction are prone to clogging of water pipes and pumps due to silt and sand, untimely scraper cleaning, complicated filter screen disassembly, and easy blockage of discharge pipes, all of which affect drainage efficiency.

Method used

The system employs a pit pumping assembly, a sludge preliminary sedimentation and removal assembly, and a secondary filtration assembly for accumulated water. The pumping pipe position is adjusted via an electric lifting rod, and the preliminary filter tank and filter plate perform sludge sedimentation and filtration. Combined with a water level detector, it achieves automated monitoring and secondary deep filtration to ensure optimized water quality.

Benefits of technology

It improves pumping efficiency, reduces the risk of equipment blockage by silt, extends equipment lifespan, enhances the stability and intelligence of the drainage system, and optimizes drainage performance.

✦ Generated by Eureka AI based on patent content.

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Abstract

This utility model discloses a foundation pit drainage device for building construction, comprising: a deep foundation pit; a foundation pit pumping assembly mounted on the deep foundation pit, the foundation pit pumping assembly being used for pumping and draining water; and a sludge preliminary sedimentation and removal assembly mounted on one side of the foundation pit pumping assembly. The device performs secondary deep filtration of the water through a second filter plate to further remove residual impurities. A water level detector monitors the water level in real time to ensure stable filtration. The filtered water is discharged into a drainage ditch via a drainage pipe through a pump. If sludge is generated during filtration, a second sludge suction pipe transports it to a sludge pump for discharge. The advantages of this device are that the secondary filtration assembly further improves water quality, reduces impurities from clogging the drainage system, and improves drainage efficiency and quality. Simultaneously, the water level detector enables automated monitoring, improves the system's intelligence level, reduces manual intervention, and further optimizes the drainage effect.
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Description

Technical Field

[0001] This utility model relates to the field of building construction technology, and more specifically, to a foundation pit drainage device for building construction. Background Technology

[0002] Building construction refers to the process of transforming building materials, components, and equipment into buildings or structures on a construction site, according to design drawings and relevant specifications, by organizing human, material, and financial resources and employing engineering techniques and construction processes. It encompasses multiple stages, from foundation excavation to main structure construction, decoration, and equipment installation, requiring comprehensive consideration of factors such as engineering technology, safety management, quality control, schedule planning, and cost control to ensure the safety, functionality, aesthetics, and economy of the building project.

[0003] A search revealed an existing patent (publication number: CN218204503U) disclosing a drainage device for deep foundation pits in building construction, relating to the field of drainage devices. This drainage device for deep foundation pits includes a water supply pipe installed in the foundation pit body, a collection well in the foundation pit body connected to the water supply pipe, a water pump installed in the water supply pipe, a drainage ditch connected to the end of the water supply pipe away from the collection well, a filter box connected to the water supply pipe, a filter screen detachably installed in the filter box, a scraper in the filter box that abuts against the filter screen, a drive assembly for driving the scraper to slide in the filter box, and a discharge pipe connected to the filter box. This application has the effect of improving the drainage efficiency of deep foundation pits.

[0004] However, during operation, the aforementioned devices are prone to clogging due to the large amount of silt at the bottom of the construction pit, leading to reduced pumping efficiency. Furthermore, silt blockage can cause the pump to run dry, potentially damaging the equipment. Although the filter screen is equipped with scrapers and drive components to remove adhering impurities, in cases of extremely high silt content, the scrapers may not be able to clear all blockages in time, and the detachable design of the filter screen increases operational complexity with frequent cleaning. The discharge pipe may also become clogged due to silt accumulation, affecting sludge discharge and further reducing drainage efficiency. Utility Model Content

[0005] In order to overcome the above-mentioned defects of the prior art, this utility model provides a foundation pit drainage device for building construction, which solves the problems that the device is prone to clogging of water pipes and pumps by mud and sand, untimely cleaning of scrapers, complicated disassembly of filter screens, and easy clogging of discharge pipes, thus affecting drainage efficiency.

[0006] To solve the above-mentioned technical problems, this utility model provides the following technical solution: a foundation pit drainage device for building construction, comprising: a deep foundation pit; a foundation pit pumping assembly mounted on the deep foundation pit, the foundation pit pumping assembly being used for pumping and draining water; a sludge preliminary sedimentation and removal assembly mounted on one side of the foundation pit pumping assembly, the sludge preliminary sedimentation and removal assembly being used for sedimentation and preliminary filtration of sludge; a secondary water filtration assembly mounted on one side of the sludge preliminary sedimentation and removal assembly, the secondary water filtration assembly being used for deep filtration; and a drainage assembly mounted on one side of the secondary water filtration assembly, the drainage assembly being used for drainage.

[0007] Preferably, the foundation pit pumping assembly includes: an installation groove formed on one side of the deep foundation pit, an electric lifting rod fixedly installed inside the installation groove, an installation plate fixedly installed on the top of the electric lifting rod, a pumping pipe fixedly installed on the top of the installation plate, and a submersible pump fixedly installed at one end of the pumping pipe.

[0008] Preferably, there are two sets of the electric lifting rod, the first water pump, and the submersible pump, and the two sets of the electric lifting rod, the first water pump, and the submersible pump are symmetrically arranged on the mounting groove.

[0009] Preferably, the sludge preliminary sedimentation and removal assembly includes: a preliminary filter tank located on one side of the deep foundation pit, a baffle plate fixedly installed inside the preliminary filter tank, a filter plate fixedly installed on the top of the baffle plate, and a sludge suction pipe fixedly installed inside the preliminary filter tank.

[0010] Preferably, the sludge preliminary sedimentation and removal assembly further includes: a sludge pump fixedly installed on one side of the preliminary filter tank, one end of the sludge suction pipe being fixedly connected to one end of the sludge pump, and a sludge discharge pipe being fixedly installed on the other end of the sludge pump.

[0011] Preferably, the secondary filtration assembly includes: a filter tank fixedly installed on one side of the primary filter tank; a second mounting plate fixedly installed on the top of the filter tank; a second pumping pipe fixedly installed on the second mounting plate; a water level detector fixedly installed at one end of the second pumping pipe; a second filter plate fixedly installed inside the filter tank; a second sludge pumping pipe fixedly installed on one side of the filter tank; the second sludge pumping pipe being located in front of the second filter plate; and one end of the second sludge pumping pipe being fixedly connected to a sludge pump.

[0012] Preferably, the drainage assembly includes: a water pump fixedly installed on one side of the filter water tank, a drain pipe fixedly installed at one end of the water pump, and a drainage channel opened on one side of the drain pipe.

[0013] Preferably, the first filter plate and the second filter plate are configured to be tilted forward, and the first filter plate and the second filter plate are used for filtration and to prevent sludge blockage.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] This invention utilizes a pit pumping assembly to initially pump out water accumulated in a deep foundation pit. An electric lifting boom adjusts the positions of the pumping pipe and submersible pump according to the water level, ensuring effective pumping. Subsequently, water containing sludge enters a preliminary sludge sedimentation and removal assembly. In the preliminary filter tank, baffles and filter plates perform initial filtration, causing the sludge to settle. The settled sludge is then discharged through the sludge pump and drain pipe. The pre-filtered water continues to flow to subsequent treatment stages. The advantages of this device are that the adjustable electric lifting boom can adapt to different water levels, improving pumping efficiency; simultaneously, the design of the preliminary filter tank effectively reduces the risk of sludge clogging subsequent equipment, extending equipment lifespan and enhancing the stability and reliability of the entire drainage system.

[0016] This invention involves a secondary filtration process where water, initially filtered, flows into a filter tank. A second filter plate then performs a deeper filtration, further removing residual impurities. A water level detector monitors the water level in real time to ensure stable filtration. The filtered water is then pumped through a drain pipe into a drainage ditch. If sludge is generated during filtration, it is transported to a sludge pump via a second suction pipe for removal. The advantages of this device are that the secondary filtration component further improves water quality, reduces clogging of the drainage system by impurities, and enhances drainage efficiency and quality. Simultaneously, the water level detector enables automated monitoring, improving the system's intelligence, reducing manual intervention, and further optimizing drainage performance. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0018] Figure 2 This is a schematic diagram of the foundation pit pumping assembly structure of this utility model;

[0019] Figure 3 This is a schematic diagram of the sludge preliminary sedimentation and removal component of this utility model;

[0020] Figure 4 This is a schematic diagram of the secondary water filtration component of this utility model;

[0021] Figure 5 This is a schematic diagram of the drainage component structure of this utility model.

[0022] [Figure Labels]

[0023] 1. Deep foundation pit; 2. Foundation pit pumping assembly; 3. Silt preliminary sedimentation and removal assembly; 4. Secondary filtration assembly for accumulated water; 5. Drainage assembly; 201. Mounting trench; 202. Electric lifting rod; 203. Mounting plate one; 204. Pumping pipe one; 205. Submersible pump; 301. Preliminary filter tank; 302. Partition plate; 303. Filter plate one; 304. Sludge pumping pipe one; 305. Sludge pump; 306. Sludge discharge pipe; 401. Filter water tank; 402. Mounting plate two; 403. Pumping pipe two; 404. Water level detector; 405. Filter plate two; 406. Sludge pumping pipe two; 501. Drainage ditch; 502. Pump; 503. Drainage pipe. Detailed Implementation

[0024] The technical solutions of this utility model will be clearly and completely described below with reference to the embodiments of this utility model. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this utility model.

[0025] Example 1

[0026] A preferred embodiment of the foundation pit drainage device for building construction provided by this utility model is, for example... Figures 1 to 5 As shown: including: a deep foundation pit 1; a foundation pit pumping assembly 2 installed on the deep foundation pit 1, the foundation pit pumping assembly 2 being used for pumping and draining water; a sludge preliminary sedimentation and removal assembly 3 installed on one side of the foundation pit pumping assembly 2, the sludge preliminary sedimentation and removal assembly 3 being used for sedimentation and preliminary filtration of sludge; a secondary water filtration assembly 4 installed on one side of the sludge preliminary sedimentation and removal assembly 3, the secondary water filtration assembly 4 being used for deep filtration; and a drainage assembly 5 installed on one side of the secondary water filtration assembly 4, the drainage assembly 5 being used for drainage.

[0027] In this embodiment, the foundation pit pumping assembly 2 includes: an installation groove 201 opened on one side of the deep foundation pit 1, an electric lifting rod 202 fixedly installed inside the installation groove 201, an installation plate 203 fixedly installed on the top of the electric lifting rod 202, a pumping pipe 204 fixedly installed on the top of the installation plate 203, and a submersible pump 205 fixedly installed at one end of the pumping pipe 204.

[0028] In this embodiment, two sets of electric lifting rods 202, water pumping pipe 204, and submersible pump 205 are provided, and the two sets of electric lifting rods 202, water pumping pipe 204, and submersible pump 205 are symmetrically arranged on the mounting groove 201.

[0029] In this embodiment, the sludge preliminary sedimentation and removal component 3 includes: a preliminary filter tank 301 opened on one side of the deep foundation pit 1, a baffle 302 fixedly installed inside the preliminary filter tank 301, a filter plate 303 fixedly installed on the top of the baffle 302, and a sludge suction pipe 304 fixedly installed inside the preliminary filter tank 301.

[0030] In this embodiment, the sludge preliminary sedimentation and removal component 3 further includes: a sludge pump 305 fixedly installed on one side of the preliminary filter tank 301, one end of the sludge suction pipe 304 fixedly connected to one end of the sludge pump 305, and a sludge discharge pipe 306 fixedly installed on the other end of the sludge pump 305.

[0031] In Embodiment 1, the working process of the foundation pit drainage device is as follows: First, the accumulated water in the deep foundation pit 1 is initially pumped out by the foundation pit pumping assembly 2. The electric lifting rod 202 adjusts the position of the pumping pipe 204 and the submersible pump 205 according to the water level to ensure that the submersible pump 205 can effectively pump water. Subsequently, the water containing sludge enters the sludge preliminary sedimentation and removal assembly 3. In the preliminary filter tank 301, the baffle 302 and the filter plate 303 perform preliminary filtration of the water, causing the sludge to settle. The settled sludge is discharged through the sludge suction pipe 304 and the sludge pump 305 via the sewage discharge pipe 306. The water that has undergone preliminary filtration continues to flow to the subsequent treatment stage. The advantage of this device is that, through the adjustment function of the electric lifting rod 202, it can adapt to the pumping needs of different water levels, improving pumping efficiency; at the same time, the design of the preliminary filter tank 301 effectively reduces the risk of sludge clogging subsequent equipment, extends the service life of the equipment, and improves the stability and reliability of the entire drainage system.

[0032] Example 2

[0033] Based on Embodiment 1, a preferred embodiment of the foundation pit drainage device for building construction provided by this utility model is as follows: Figures 1 to 5 As shown: The secondary filtration assembly 4 for water accumulation includes: a filter tank 401 fixedly installed on one side of the primary filter tank 301; an installation plate 402 fixedly installed on the top of the filter tank 401; a pumping pipe 403 fixedly installed on the installation plate 402; a water level detector 404 fixedly installed at one end of the pumping pipe 403; a filter plate 405 fixedly installed inside the filter tank 401; a sludge suction pipe 406 fixedly installed on one side of the filter tank 401; the sludge suction pipe 406 is located in front of the filter plate 405; and one end of the sludge suction pipe 406 is fixedly connected to a sludge pump 305.

[0034] In this embodiment, the drainage component 5 includes: a water pump 502 fixedly installed on one side of the filter water tank 401, a drain pipe 503 fixedly installed at one end of the water pump 502, and a drainage channel 501 opened on one side of the drain pipe 503.

[0035] In this embodiment, filter plate 303 and filter plate 405 are configured to be tilted forward, and filter plate 303 and filter plate 405 are used for filtration and to prevent sludge blockage.

[0036] In Embodiment Two, the foundation pit drainage device, based on Embodiment One, adds a secondary water filtration component 4 and a drainage component 5. The working process is as follows: Water that has undergone preliminary filtration flows into the filtration tank 401, where the second filter plate 405 performs secondary deep filtration to further remove residual impurities. A water level detector 404 monitors the water level in real time to ensure stable filtration. The filtered water is then pumped by a water pump 502 and discharged into the drainage ditch 501 via a drainage pipe 503. If sludge is generated during filtration, it is transported by a second sludge suction pipe 406 to a sludge suction pump 305 for discharge. The advantages of this device are that the secondary filtration component further improves water quality, reduces impurities from clogging the drainage system, and enhances drainage efficiency and quality. Simultaneously, the water level detector 404 enables automated monitoring, improves the system's intelligence level, reduces manual intervention, and further optimizes the drainage effect.

[0037] Finally, the following points should be noted: First, in the description of this application, it should be noted that, unless otherwise specified and limited, the terms "installation", "connection", and "linkage" should be interpreted broadly, and can be mechanical or electrical connections, or internal connections between two components, or direct connections. "Up", "down", "left", "right", etc. are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may change.

[0038] Secondly: The accompanying drawings of the embodiments disclosed in this utility model only involve the structures involved in the embodiments disclosed in this utility model. Other structures can refer to the general design. In the absence of conflict, the same embodiment and different embodiments of this utility model can be combined with each other.

[0039] Finally: The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A foundation pit drainage device for construction work, characterized by, include: Deep foundation pit (1); A pit pumping assembly (2) is mounted on the deep pit (1) for pumping out water and draining water. A sludge preliminary sedimentation and removal assembly (3) is installed on one side of the foundation pit pumping assembly (2). The sludge preliminary sedimentation and removal assembly (3) is used for sedimentation and preliminary filtration of sludge. A secondary water filtration assembly (4) is installed on one side of the sludge primary sedimentation and removal assembly (3), and the secondary water filtration assembly (4) is used for deep filtration. A drainage assembly (5) is installed on one side of the secondary water filtration assembly (4), and the drainage assembly (5) is used for drainage.

2. The foundation pit drainage device for building construction according to claim 1, characterized in that, The foundation pit pumping assembly (2) includes: An installation slot (201) is opened on one side of the deep foundation pit (1). An electric lifting rod (202) is fixedly installed inside the installation slot (201). An installation plate (203) is fixedly installed on the top of the electric lifting rod (202). A water pumping pipe (204) is fixedly installed on the top of the installation plate (203). A submersible pump (205) is fixedly installed at one end of the water pumping pipe (204).

3. The foundation pit drainage device for building construction according to claim 2, characterized in that, The electric lifting rod (202), the first water pump (204), and the submersible pump (205) are provided in two sets, and the two sets of the electric lifting rod (202), the first water pump (204), and the submersible pump (205) are symmetrically arranged on the mounting groove (201).

4. A foundation pit drainage device for building construction according to claim 3, characterized in that, The sludge preliminary sedimentation and removal component (3) includes: A preliminary filter (301) is set up on one side of the deep foundation pit (1). A partition (302) is fixedly installed inside the preliminary filter (301). A filter plate (303) is fixedly installed on the top of the partition (302). A sewage suction pipe (304) is fixedly installed inside the preliminary filter (301).

5. A foundation pit drainage device for building construction according to claim 4, characterized in that, The sludge preliminary sedimentation and removal component (3) also includes: A sludge pump (305) is fixedly installed on one side of the primary filter tank (301). One end of the sludge suction pipe (304) is fixedly connected to one end of the sludge pump (305), and a sludge discharge pipe (306) is fixedly installed on the other end of the sludge pump (305).

6. A foundation pit drainage device for building construction according to claim 5, characterized in that, The secondary filtration assembly (4) for accumulated water includes: A filter tank (401) is fixedly installed on one side of the primary filter tank (301). A second mounting plate (402) is fixedly installed on the top of the filter tank (401). A second pumping pipe (403) is fixedly installed on the second mounting plate (402). A water level detector (404) is fixedly installed at one end of the second pumping pipe (403). A second filter plate (405) is fixedly installed inside the filter tank (401). A second sludge pumping pipe (406) is fixedly installed on one side of the filter tank (401). The second sludge pumping pipe (406) is located in front of the second filter plate (405). One end of the second sludge pumping pipe (406) is fixedly connected to a sludge pump (305).

7. A foundation pit drainage device for building construction according to claim 6, characterized in that, The drainage assembly (5) includes: A water pump (502) is fixedly installed on one side of the filter water tank (401). A drain pipe (503) is fixedly installed at one end of the water pump (502). A drainage channel (501) is opened on one side of the drain pipe (503).

8. A foundation pit drainage device for building construction according to claim 7, characterized in that, The filter plate one (303) and filter plate two (405) are configured to be tilted forward, and the filter plate one (303) and filter plate two (405) are used for filtration and to prevent sludge blockage.