Drainage device for foundation pit in backfill area

Abstract

The utility model discloses a backfill area foundation pit drainage device which comprises a foundation pit body, a water collecting well is arranged in the foundation pit body, a plurality of water inlet holes are formed in the water collecting well, a water pump is arranged in the water collecting well, a water inlet and a water outlet are respectively formed in the water pump, and the water inlet and the water outlet are communicated with the water collecting well. The water inlet is connected to a water inlet pipe arranged in the water collecting well, the water outlet is connected with a water drainage pipe, and the end of the water drainage pipe is arranged outside the water collecting well and used for draining water. According to the utility model, water in the foundation pit can be conveniently and effectively discharged.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of building engineering especially to a backfill area foundation pit drainage device. BACKGROUND

[0002] At present, in the field of building construction, especially in the process of deep foundation pit construction, in order to ensure construction safety and engineering quality, effective dewatering measures are usually needed to lower the underground water level. Among them, the well point dewatering as a common and low-cost method is widely used in various projects. This method collects underground water by setting up a well and discharges it to the surface by a water pump, effectively preventing the soil instability phenomenon caused by underground water immersion.

[0003] Although the above methods can achieve foundation pit drainage to some extent, they generally have some defects. First of all, the design of the well point is not reasonable, resulting in low drainage efficiency. For example, the uneven distribution or insufficient number of water inlet holes of the well point makes the accumulated water in some areas unable to be discharged in time. Secondly, the installation position of the water pump is improper, which is easy to be blocked by silt, affecting the normal work. In addition, the stability of the well point is poor, and the well wall is easy to collapse in the long-term use process, which brings safety hazards to the construction. Therefore, a more efficient and stable foundation pit drainage device is urgently needed to solve these problems. SUMMARY

[0004] The application provides a backfill area foundation pit drainage device, which can effectively discharge the water in the foundation pit.

[0005] The application provides a backfill area foundation pit drainage device, which adopts the following technical scheme:

[0006] A backfill area foundation pit drainage device, comprising a foundation pit main body, a well point is arranged in the foundation pit main body, a plurality of water inlet holes are arranged on the well point, a water pump is arranged in the well point, a water inlet and a water outlet are respectively arranged on the water pump, the water inlet is connected to a water inlet pipe arranged in the well point, a drainage pipe is connected to the water outlet, and the end of the drainage pipe is arranged outside the well point for discharging water.

[0007] By adopting the above technical scheme, the backfill area foundation pit drainage device designed by the utility model can ensure that the accumulated water in the foundation pit is effectively treated, and this design not only improves the drainage efficiency, but also avoids the influence of accumulated water on the foundation pit structure.

[0008] Preferably, the inner side surface of the foundation pit body is designed to be inclined, and the water collecting well is arranged in the middle of the foundation pit body, and the moisture in the foundation pit body enters the water collecting well through the inner side surface.

[0009] By adopting the above technical scheme, when in use, the inner side surface of the foundation pit body is designed to be inclined, which helps to guide the moisture inside the foundation pit body to quickly flow into the water collecting well, reduces the water accumulation phenomenon, improves the drainage efficiency, and the water collecting well is arranged in the middle of the foundation pit body, so that the moisture can be uniformly collected, and the reliability of the drainage system is further improved.

[0010] Preferably, a support frame is arranged in the water collecting well, the support frame is fixed to the inner wall of the water collecting well, the support frame is used for fixing the water pump, and the support frame is detachably connected with the water pump.

[0011] By adopting the above technical scheme, when in use, the support frame can stably fix the water pump, so as to ensure that the water pump will not be displaced or damaged during the working process, thereby improving the reliability and safety of the drainage device. At the same time, the detachable connection design of the support frame and the water pump facilitates maintenance and replacement, and reduces the maintenance cost and time.

[0012] Preferably, the side wall of the water collecting well is provided with reinforcing ribs, the reinforcing ribs are used for enhancing the stability of the water collecting well and preventing the collapse of the well wall, and a plurality of reinforcing ribs are arranged and uniformly distributed on the side wall of the water collecting well.

[0013] By adopting the above technical scheme, when in use, the side wall of the water collecting well is provided with a plurality of reinforcing ribs, which can significantly enhance the stability of the water collecting well and effectively prevent the collapse of the well wall. This not only improves the safety of the entire drainage device, but also prolongs the service life of the device.

[0014] Preferably, a seepage prevention layer is arranged on the side wall of the water collecting well, and the seepage prevention layer is used for preventing water from penetrating into the surrounding soil.

[0015] By adopting the above technical scheme, when in use, the seepage prevention layer arranged on the side wall of the water collecting well can effectively prevent water from penetrating into the surrounding soil, thereby reducing the water content of the soil around the foundation pit, improving the stability and safety of the foundation pit, and avoiding the problem of soil slippage or collapse caused by water penetration.

[0016] Preferably, a filter screen is arranged on the water inlet pipe, the filter screen has a multilayer structure, including a coarse filter screen and a fine filter screen, the coarse filter screen is located on the outer side, and the fine filter screen is located on the inner side, so as to filter silt of different particle sizes in layers.

[0017] By adopting the above technical scheme, when in use, the multilayer filter screen structure can effectively filter silt of different particle sizes, reduce the silt entering the water collecting well, thereby protecting the water pump from abrasion and improving the stability and service life of the system.

[0018] Preferably, the drain pipe is provided with a control valve, which is a one-way valve to prevent backflow of water.

[0019] By adopting the above technical scheme, in use, the control valve can effectively prevent backflow of water during drainage, ensuring the stability and reliability of the drainage system.

[0020] Preferably, the bottom of the water collecting well is provided with a sedimentation tank for collecting larger particle silt. The sedimentation tank is provided with a cleaning port for facilitating regular cleaning of sediments.

[0021] By adopting the above technical scheme, in use, the sedimentation tank provided at the bottom of the water collecting well can effectively collect larger particle silt, reducing the risk of silt entering the water pump, prolonging the service life of the water pump, and improving the stability and reliability of the drainage system. The sedimentation tank is also provided with a cleaning port, facilitating regular cleaning of sediments and ensuring long-term efficient operation of the system.

[0022] In summary, the present application has the following beneficial effects:

[0023] 1. The backfill area foundation pit drainage device designed by the utility model, through setting the water collecting well with the water inlet hole and the water pump in the foundation pit main body, the accumulated water in the foundation pit can be efficiently collected and discharged through the drain pipe, which significantly improves the efficiency and reliability of the foundation pit drainage;

[0024] 2. The backfill area foundation pit drainage device designed by the utility model, the support frame provided in the water collecting well is detachably connected with the water pump, facilitating installation and maintenance of the water pump, reducing maintenance cost, while ensuring stable operation of the water pump and prolonging the service life of the equipment;

[0025] 3. The backfill area foundation pit drainage device designed by the utility model, the inner side surface of the foundation pit main body is designed to be inclined, so that water is more easily collected in the water collecting well, reducing the time of accumulated water retention and further improving the overall performance of the drainage system, avoiding the influence of accumulated water on the construction environment. BRIEF DESCRIPTION OF DRAWINGS

[0026] Figure 1 The structure schematic view of the embodiment;

[0027] Figure 2 The structure schematic view of the water collecting well in the embodiment;

[0028] Mark explanation: 1, foundation pit main body; 2, water collecting well; 3, water inlet hole; 4, water pump; 5, water inlet; 6, water outlet; 7, water inlet pipe; 8, drain pipe; 9, support frame; 10, reinforcing rib; 11, impermeable layer; 12, filter screen; 13, control valve; 14, sedimentation tank. DETAILED DESCRIPTION

[0029] The utility model makes further detailed instructions below combining the drawings. Same parts use same signs in the drawings. It is explained that, the words "front", "back", "left", "right", "up", "down", "bottom" and "top" in the following description refer to the direction in the drawings, and the words "inner" and "outer" refer to the direction towards or away from the geometric center of a particular component.

[0030] The utility model discloses a backfill area foundation pit drainage device, such as Figure 1 And Figure 2 As shown, including foundation pit main body 1, foundation pit main body 1 can adopt concrete or other corrosion -resistant material to be made, be provided with water collecting well 2 in foundation pit main body 1, be provided with multiple water inlet holes 3 on water collecting well 2, multiple water inlet holes 3 on water collecting well 2 can be arranged according to actual demand, generally recommend uniform distribution, to ensure that water flow evenly enters water collecting well 2, the inner side of foundation pit main body 1 adopts the inclination design, water collecting well 2 is set in the middle of foundation pit main body 1, and the moisture in foundation pit main body 1 enters water collecting well 2 through inner side, and the sidewall of foundation pit main body 1 can be provided with impermeable layer 11 to prevent moisture from penetrating into surrounding soil, impermeable layer 11 can adopt waterproof paint or waterproof roll material, has good waterproof performance and durability, and the thickness and layer number of impermeable layer 11 can be selected according to actual working condition, to ensure waterproof effect. The sidewall of water collecting well 2 is also provided with reinforcing rib 10, and reinforcing rib 10 is used to enhance the stability of water collecting well 2, to prevent the collapse of well wall, and reinforcing rib 10 is provided with multiple, and multiple reinforcing rib 10 is evenly distributed on the sidewall of water collecting well 2, and water collecting well 2 bottom can be provided with sedimentation tank 14, for collecting larger particle silt, and the volume of sedimentation tank 14 can be designed according to actual drainage capacity, to ensure enough storage space, and sedimentation tank 14 is provided with cleaning port, to facilitate regular cleaning of sediment, and cleaning port can adopt the form of cover plate or valve, with good sealing property and convenient operability.

[0031] The water pump 4 can be a submersible pump 4 or a centrifugal pump, both of which can work normally underwater and are suitable for a foundation pit drainage scene. The support frame 9 is fixedly connected to the inner wall of the water collecting well 2 and is used for fixing the water pump 4. The support frame 9 is detachably connected with the water pump 4. The water pump 4 is provided with an inlet 5 and an outlet 6, respectively. The inlet 5 is connected with a water inlet pipe 7 arranged in the water collecting well 2. The water inlet pipe 7 can be made of stainless steel or PVC and has good corrosion resistance and durability. The diameter and length of the water inlet pipe 7 should be selected according to the actual drainage capacity to ensure smooth water flow. A filter screen 12 can be arranged on the water inlet pipe 7 to prevent silt from blocking the pipeline. The filter screen 12 can have a multi-layer structure, including a coarse filter screen and a fine filter screen. The coarse filter screen is located on the outer side and is mainly used for intercepting large-particle silt. The fine filter screen is located on the inner side and is mainly used for intercepting small-particle silt. The filter screen 12 can be made of stainless steel or nylon and has good corrosion resistance and filtering effect. The outlet 6 is connected with a drainage pipe 8, and the end of the drainage pipe 8 is arranged outside the water collecting well 2 and is used for discharging water. A control valve 13 can be arranged on the drainage pipe 8 to prevent backflow. The control valve 13 can be a one-way valve and has good sealing performance and reliability. The opening pressure of the one-way valve can be adjusted according to actual requirements to ensure smooth water flow and prevent backflow. The drainage pipe 8 can also be made of stainless steel or PVC, and the end thereof is arranged outside the water collecting well 2 and can be fixed by a flange or a threaded connection to ensure sealing performance.

[0032] Working principle: The backfill area foundation pit drainage device designed by the utility model can effectively and rapidly discharge the accumulated water in the foundation pit by reasonably designing the structures of the foundation pit main body 1 and the water collecting well 2 and combining the high-efficiency water pump 4, thereby improving the drainage efficiency and safety. Meanwhile, the stability and reliability of the system are further enhanced by the auxiliary structures such as the support frame 9, the reinforcing rib 10, the anti-seepage layer 11, the filter screen 12, the control valve 13 and the sedimentation tank 14, thereby reducing the maintenance cost and prolonging the service life.

[0033] The above are preferred embodiments of the present application, which do not limit the protection scope of the present application, and therefore: any equivalent changes made on the basis of the structure, shape and principle of the present application should be covered within the protection scope of the present application.

Claims

1. A backfill area foundation pit drainage device, characterized by: The invention comprises a foundation pit body (1), a water collection well (2) is arranged in the foundation pit body (1), a plurality of water inlet holes (3) are arranged on the water collection well (2), a water pump (4) is arranged in the water collection well (2), a water inlet (5) and a water outlet (6) are respectively arranged on the water pump (4), the water inlet (5) is connected to a water inlet pipe (7) arranged in the water collection well (2), the water outlet (6) is connected to a drainage pipe (8), the end of the drainage pipe (8) is arranged outside the water collection well (2) for discharging water.

2. A backfill area foundation pit drainage device according to claim 1, characterized in that: The inner side surface of the foundation pit body (1) is designed to be inclined, and the water collection well (2) is arranged in the middle of the foundation pit body (1). Water in the foundation pit body (1) enters the water collection well (2) through the inner side surface.

3. The backfill area foundation pit drainage device according to claim 1, characterized in that: A support frame (9) is provided in the water collection well (2), the support frame (9) is fixed to the inner wall of the water collection well (2), the support frame (9) is used to fix the water pump (4), and the support frame (9) is detachably connected to the water pump (4).

4. The backfill area foundation pit drainage device according to claim 1, characterized in that: The side wall of the water collection well (2) is provided with reinforcing ribs (10), and the reinforcing ribs (10) are used to enhance the stability of the water collection well (2) and prevent the well wall from collapsing. A plurality of reinforcing ribs (10) are provided, and the plurality of reinforcing ribs (10) are evenly distributed on the side wall of the water collection well (2).

5. The backfill area foundation pit drainage device according to claim 1, characterized in that: An anti-seepage layer (11) is provided on the side wall of the water collection well (2), and the anti-seepage layer (11) is used to prevent water from penetrating into the surrounding soil.

6. The backfill area foundation pit drainage device according to claim 1, characterized in that: The water inlet pipe (7) is provided with a filter screen (12). The filter screen (12) is a multi-layer structure, including a coarse filter screen and a fine filter screen. The coarse filter screen is located on the outside and the fine filter screen is located on the inside, so as to filter sediment of different particle sizes in layers.

7. The backfill area foundation pit drainage device according to claim 1, characterized in that: The drainage pipe (8) is provided with a control valve (13), which is a one-way valve to prevent water from flowing back.

8. The backfill area foundation pit drainage device according to claim 1, characterized in that: A sedimentation tank (14) is provided at the bottom of the water collection well (2) for collecting larger particles of sediment. The sedimentation tank (14) is provided with a cleaning port for convenient regular cleaning of sediment.

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