Recycling device for dewatering and drainage of foundation pit

Abstract

The utility model provides a foundation pit dewatering and drainage water recycling device which comprises a foundation pit, a sand removing and water collecting well device and a purified water reservoir device, the sand removing and water collecting well device is connected with the foundation pit, and the purified water reservoir device is connected with the sand removing and water collecting well device; the sand removing and water collecting well device comprises a sand removing treatment device and an accumulated sand treatment device, the sand removing treatment device is used for removing sand in accumulated water of the foundation pit, and the accumulated sand treatment device is used for removing accumulated sand deposited in the sand removing treatment device; the desanding treatment device comprises a drainage pipe, a water collecting pit and a desanding net; and the purified water reservoir device is used for re-purifying the water in the water collecting pit. By adopting the structural design of the sand-removing water-collecting well device and the water-purifying reservoir device, accumulated water in the foundation pit is purified twice or repeatedly and then recycled, so that water resources are effectively saved.

Description

Technical Field

[0001] This utility model relates to the field of building construction technology, and in particular to a foundation pit dewatering and recycling device. Background Technology

[0002] In construction, especially in projects involving deep foundation pits, dewatering is a crucial step in ensuring construction safety, progress, and quality. Effective dewatering measures can prevent water accumulation in the foundation pit, maintain its stability, and provide a dry working environment for construction.

[0003] Problems with foundation pit dewatering: The process of foundation pit dewatering often generates large amounts of wastewater containing impurities such as silt and oil. Direct discharge into the environment can pollute groundwater, soil, and ecosystems. Furthermore, direct discharge wastes valuable water resources.

[0004] Traditional methods for dewatering foundation pits:

[0005] Natural sedimentation: Traditional methods of dewatering from foundation pits mainly rely on natural sedimentation to remove impurities from wastewater. While this method is simple and easy to implement, its sedimentation effect is limited and it cannot completely remove fine particles and dissolved pollutants from wastewater.

[0006] Centralized treatment: Another traditional method is to collect the wastewater from the foundation pit and treat it through specialized wastewater treatment facilities. However, this method requires a large investment of capital and equipment, and the treatment process is complex and costly.

[0007] The demand for foundation pit dewatering and recycling devices

[0008] Water conservation: With increasing water scarcity, conserving and protecting water resources has become a consensus across society. The emergence of foundation pit dewatering and recycling devices is precisely to meet this need, transforming wastewater into usable water resources.

[0009] Environmental requirements: Environmental requirements for building construction are becoming increasingly stringent, and improper dewatering of foundation pits can easily lead to environmental problems. Therefore, developing a device that can effectively remove impurities from wastewater and achieve water resource recycling is particularly important. Utility Model Content

[0010] This utility model provides a foundation pit dewatering and drainage recycling device, which aims to solve the technical problems in the background art where traditional foundation pit dewatering and drainage is difficult to completely remove fine particles and dissolved pollutants from wastewater, and the treatment process is complicated and costly.

[0011] To achieve the above objectives, this utility model provides a foundation pit dewatering and recycling device, including a foundation pit, a desanding and water collection well device, and a clean water storage tank device. The desanding and water collection well device is connected to the foundation pit, and the clean water storage tank device is connected to the desanding and water collection well device.

[0012] The sand removal and water collection well device includes a sand removal treatment device and a sand accumulation treatment device. The sand removal treatment device removes sand and gravel from the water accumulation in the foundation pit, and the sand accumulation treatment device removes the accumulated sand deposited in the sand removal treatment device.

[0013] The sand removal device includes a drainage pipe, a water collection pit, and a sand removal screen. The water accumulated in the foundation pit passes through the drainage pipe and the sand removal screen and is deposited in the water collection pit.

[0014] The water purification and storage tank device further purifies the water in the collection pit.

[0015] Preferably, the sand-removing mesh is disposed at the end of the drain pipe and / or in the water collection pit. The sand-removing mesh in the water collection pit is a tubular structure with a size smaller than that of the water collection pit. The inlet and outlet of the water collection pit are respectively disposed on both sides of the sand-removing mesh.

[0016] Preferably, the sand removal device consists of three sets, which are connected in sequence.

[0017] Preferably, the sand accumulation treatment device includes a sand accumulation conduit, a solenoid valve, a sand accumulation pool, and a screw conveyor. One end of the sand accumulation conduit is connected to the water collection pit, and the other end is connected to the sand accumulation pool. The solenoid valve is located on the sand accumulation conduit, and the lower end of the screw conveyor is located in the sand accumulation pool to transport the accumulated sand in the sand accumulation pool out of the sand accumulation pool.

[0018] Preferably, the water purification storage tank device includes a water purification tank, a water purification tank inlet pipe, a delivery pump, and a water purification tank outlet pipe. One end of the water purification tank inlet pipe is connected to the water collection pit, and the other end of the water purification tank inlet pipe is connected to the water purification tank. The delivery pump is installed on the water purification tank inlet pipe, and one end of the water purification tank outlet pipe is connected to the water purification tank. The delivery pump is equipped with a switch controller, which controls the opening and closing of the delivery pump.

[0019] Preferably, the water purification tank is equipped with a water purification filter element, which is located in the middle of the water purification tank, and the water inlet pipe and the water outlet pipe of the water purification tank are respectively located on both sides of the water purification filter element.

[0020] Preferably, the water purification filter element comprises a ceramic ring layer, a coarse blue cotton layer, a quartz ball layer, a fine white cotton layer, and an activated carbon cotton layer stacked in sequence.

[0021] Preferably, the number of water outlet pipes of the water purification tank is three sets, and the three sets of water outlet pipes of the water purification tank are respectively connected to the greening water tank, the sprinkler truck water tank and the fire-fighting water tank.

[0022] Preferably, multiple foundation pits share a single set of the sand removal and water collection well device and the water purification and storage tank device.

[0023] Preferably, a gravel removal device is provided at the outlet of the foundation pit.

[0024] The foundation pit dewatering and recycling device of this utility model has the following beneficial effects:

[0025] The structural design of the aforementioned sand removal and water collection well device and purified water storage tank device allows for two or more rounds of water purification in the foundation pit before recycling, effectively saving water resources and reducing energy consumption and emissions. Multi-layer water purification technology is employed, using filter layers of different materials or different levels of sand removal mesh to gradually remove impurities from the wastewater, improving filtration efficiency and ensuring the quality of the effluent. The three sets of sand removal meshes in the sand removal treatment device have progressively smaller mesh sizes, efficiently removing sand or mud from the water. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of a preferred embodiment of a foundation pit dewatering and recycling device of the present invention;

[0027] Figure 2 for Figure 1 A schematic diagram of a preferred embodiment of a sand removal treatment device for a foundation pit dewatering and recycling system is shown.

[0028] Figure 3 for Figure 1 A schematic diagram of a preferred embodiment of a water purification tank in a foundation pit dewatering and recycling device is shown.

[0029] In the picture:

[0030] 1. Foundation pit; 2. Sand removal and water collection well device; 3. Clean water storage tank device; 21. Sand removal treatment device; 22. Sand accumulation treatment device; 211. Drainage pipe; 212. Water collection pit; 213. Sand removal screen; 221. Sand accumulation guide pipe; 222. Solenoid valve; 223. Sand accumulation pool; 224. Screw conveyor; 31. Clean water pool; 32. Clean water pool inlet pipe; 33. Transfer pump; 34. Clean water pool outlet pipe; 330. Switch controller; 311. Ceramic ring layer; 312. Coarse blue cotton layer; 313. Quartz ball layer; 314. Fine white cotton layer; 315. Activated carbon cotton layer. Detailed Implementation

[0031] To make the technical problems, technical solutions and advantages of this utility model clearer, a detailed description will be given below in conjunction with the accompanying drawings and specific embodiments.

[0032] This invention addresses existing problems by providing a device for recycling drainage in foundation pits.

[0033] In one embodiment, a pit dewatering and recycling device, such as Figures 1 to 3 As shown, the structure includes a foundation pit 1, a desanding and water collection well device 2, and a purified water storage tank device 3. The desanding and water collection well device 2 is connected to the foundation pit 1, and the purified water storage tank device 3 is connected to the desanding and water collection well device 2.

[0034] In this embodiment, the water in the foundation pit 1 can be purified by using a two-layer water purification device consisting of a sand removal and water collection well device 2 and a water purification and storage tank device 3.

[0035] Multiple foundation pits 1 share a set of the sand removal and water collection well device 2 and the water purification and storage tank device 3. A sand and gravel removal device is provided at the outlet of each foundation pit 1.

[0036] In this embodiment, since the water content in the foundation pit 1 is uncertain, in order to save equipment manufacturing costs, multiple foundation pits 1 can share a set of water purification devices to improve equipment utilization and work efficiency.

[0037] The sand removal and water collection well device 2 includes a sand removal treatment device 21 and a sand accumulation treatment device 22. The sand removal treatment device 21 removes sand and gravel from the water accumulation in the foundation pit 1, and the sand accumulation treatment device 22 removes the accumulated sand deposited in the sand removal treatment device 21.

[0038] In this embodiment, the sand and water are initially separated by the sand removal device 21, and the separated mud and sand are processed by the sand accumulation device 22 to avoid accumulation in the equipment and affecting the normal separation operation.

[0039] The water purification and storage tank device 3 further purifies the water in the water collection pit 212.

[0040] like Figure 2 As shown, the sand removal device 21 includes a drain pipe 211, a water collection pit 212, and a sand removal screen 213. Water accumulated in the foundation pit 1 passes through the drain pipe 211 and the sand removal screen 213, settling in the water collection pit 212.

[0041] The desanding mesh 213 is disposed at the end of the drain pipe 211 and / or in the water collection pit 212. The desanding mesh 213 in the water collection pit 212 is a tubular structure with a size smaller than that of the water collection pit 212. The inlet and outlet of the water collection pit 212 are respectively disposed on both sides of the desanding mesh 213.

[0042] In this embodiment, the sand removal mesh 213 can perform preliminary sand-water separation. The sand removal mesh 213 can be installed at the drain pipe or in the water collection pit 212. Sand and water are separated through the mesh openings of the sand removal mesh 213.

[0043] The sand removal device 21 consists of three sets, which are connected in sequence.

[0044] In this embodiment, the mesh size of the three sets of sand-removing meshes 213 can be set to decrease sequentially, so as to efficiently remove sand or mud from the water.

[0045] The sand accumulation treatment device 22 includes a sand accumulation conduit 221, a solenoid valve 222, a sand accumulation tank 223, and a screw conveyor 224. One end of the sand accumulation conduit 221 is connected to the water collection pit 212, and the other end is connected to the sand accumulation tank 223. The solenoid valve 222 is located on the sand accumulation conduit 221. The lower end of the screw conveyor 224 is located in the sand accumulation tank 223 to transport the accumulated sand in the sand accumulation tank 223 out of the sand accumulation tank 223.

[0046] In this embodiment, when it is necessary to process accumulated gravel, the solenoid valve 222 is opened, and the accumulated gravel flows into the gravel collection tank 223 through the sand collection conduit 221 by the force of the flowing water or gravity. The screw conveyor 224 then transports the gravel in the gravel collection tank 223, which is located in the lower space, to the outside.

[0047] The purified water storage tank device 3 includes a purified water tank 31, a purified water tank inlet pipe 32, a delivery pump 33, and a purified water tank outlet pipe 34. One end of the purified water tank inlet pipe 32 is connected to the water collection pit 212, and the other end of the purified water tank inlet pipe 32 is connected to the purified water tank 31. The delivery pump 33 is mounted on the purified water tank inlet pipe 32, and one end of the purified water tank outlet pipe 34 is connected to the purified water tank 31. The delivery pump 33 is equipped with a switch controller 330. The switch controller 330 controls the opening and closing of the delivery pump 33.

[0048] In this embodiment, the delivery pump 33 introduces the pre-treated water from the collection pit 212 into the water purification tank 31 through the water inlet pipe 32. The switch controller 330 controls the opening and closing of the delivery pump 33, and can turn on the delivery pump 33 to divert water when the collection pit 212 is full.

[0049] like Figure 3As shown, the water purification tank 31 is equipped with a water purification filter element 310. The water purification filter element 310 is located in the middle of the water purification tank 31, and the water inlet pipe 32 and the water outlet pipe 34 of the water purification tank are respectively located on both sides of the water purification filter element 310.

[0050] The water purification filter element 310 includes a ceramic ring layer 311, a coarse blue cotton layer 312, a quartz ball layer 313, a fine white cotton layer 314, and an activated carbon cotton layer 315 stacked in sequence.

[0051] In this embodiment, the water purification filter element 310 with a multi-layer filtration structure can enhance the purification effect.

[0052] The number of water outlet pipes 34 in the water purification tank is three sets, and the three sets of water outlet pipes 34 are respectively connected to the greening water tank, the sprinkler truck water tank and the fire-fighting water tank.

[0053] In this embodiment, the purified water in the water purification tank 31 can be used for municipal water supply, such as for landscaping irrigation, fire truck water supply, and sprinkler truck water supply. Different water tanks can be set up, each with different interfaces depending on its intended use. Alternatively, a single water tank can be used with different interfaces.

[0054] The foundation pit dewatering and recycling device of this utility model has the following beneficial effects:

[0055] The structural design of the sand removal and water collection well device 2 and the purified water storage tank device 3 allows for two or more rounds of water purification in the foundation pit before recycling, effectively saving water resources and reducing energy consumption and emissions. Multi-layer water purification technology is employed, using filter layers of different materials or different levels of sand removal mesh to gradually remove impurities from the wastewater, improving filtration efficiency and ensuring the quality of the effluent. The three sets of sand removal meshes 213 in the sand removal treatment device 21 have progressively smaller mesh sizes, efficiently removing sand or mud from the water.

[0056] The above description is the preferred embodiment of this utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of this utility model, and these improvements and modifications should also be considered within the protection scope of this utility model.

Claims

1. A device for recycling drainage in foundation pits, characterized in that, It includes a foundation pit (1), a sand removal and water collection well device (2), and a water purification and storage tank device (3). The sand removal and water collection well device (2) is connected to the foundation pit (1), and the water purification and storage tank device (3) is connected to the sand removal and water collection well device (2). The sand removal and water collection well device (2) includes a sand removal treatment device (21) and a sand accumulation treatment device (22). The sand removal treatment device (21) removes sand and gravel from the water in the foundation pit (1), and the sand accumulation treatment device (22) removes the accumulated sand deposited in the sand removal treatment device (21). The sand removal device (21) includes a drain pipe (211), a water collection pit (212), and a sand removal net (213). The water in the foundation pit (1) passes through the drain pipe (211) and the sand removal net (213) and is deposited in the water collection pit (212). The water purification storage tank device (3) further purifies the water in the water collection pit (212).

2. The foundation pit dewatering and recycling device according to claim 1, characterized in that, The desanding mesh (213) is located at the end of the drain pipe (211) and / or in the water collection pit (212). The desanding mesh (213) in the water collection pit (212) is a tubular structure with a size smaller than that of the water collection pit (212). The inlet and outlet of the water collection pit (212) are respectively located on both sides of the desanding mesh (213).

3. The foundation pit dewatering and recycling device according to claim 1, characterized in that, The sand removal device (21) consists of three sets, which are connected in sequence.

4. The foundation pit dewatering and recycling device according to claim 1, characterized in that, The sand treatment device (22) includes a sand collection conduit (221), a solenoid valve (222), a sand collection tank (223), and a screw conveyor (224). One end of the sand collection conduit (221) is connected to the water collection pit (212), and the other end is connected to the sand collection tank (223). The solenoid valve (222) is located on the sand collection conduit (221), and the lower end of the screw conveyor (224) is located in the sand collection tank (223) to transport the sand in the sand collection tank (223) out of the sand collection tank (223).

5. The foundation pit dewatering and recycling device according to claim 1, characterized in that, The water purification storage tank device (3) includes a water purification tank (31), a water purification tank inlet pipe (32), a delivery pump (33), and a water purification tank outlet pipe (34). One end of the water purification tank inlet pipe (32) is connected to the water collection pit (212), and the other end of the water purification tank inlet pipe (32) is connected to the water purification tank (31). The delivery pump (33) is installed on the water purification tank inlet pipe (32), and one end of the water purification tank outlet pipe (34) is connected to the water purification tank (31). The delivery pump (33) is equipped with a switch controller (330), which controls the opening and closing of the delivery pump (33).

6. The foundation pit dewatering and recycling device according to claim 5, characterized in that, The water purification tank (31) is equipped with a water purification filter element (310), which is located in the middle of the water purification tank (31). The water inlet pipe (32) and the water outlet pipe (34) of the water purification tank are respectively located on both sides of the water purification filter element (310).

7. The foundation pit dewatering and recycling device according to claim 6, characterized in that, The water purification filter element (310) includes a ceramic ring layer (311), a coarse blue cotton layer (312), a quartz ball layer (313), a fine white cotton layer (314), and an activated carbon cotton layer (315) stacked in sequence.

8. A foundation pit dewatering and recycling device according to claim 5, characterized in that, The number of water outlet pipes (34) of the water purification tank is three sets, and the three sets of water outlet pipes (34) of the water purification tank are respectively connected to the greening water tank, the sprinkler truck water tank and the fire-fighting water tank.

9. A foundation pit dewatering and recycling device according to claim 1, characterized in that, Multiple foundation pits (1) share a set of the sand removal and water collection well device (2) and the water purification and storage tank device (3).

10. A foundation pit dewatering and recycling device according to claim 1, characterized in that, A gravel removal device is provided at the outlet of the foundation pit (1).

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