A drainage pipe structure for deep foundation pit dewatering engineering

Abstract

The present invention relates to a drainage pipe structure for a deep foundation pit dewatering project, comprising a plurality of conveying pipes, a plurality of mounting brackets and a plurality of filter units. The plurality of conveying pipes and the plurality of filter units are alternately arranged along a conveying direction, and each conveying pipe is threadedly connected to a filter unit, and mounting brackets are arranged one-to-one on the lower side of each conveying pipe; each filter unit comprises a separation cabin and a sedimentation body, the separation cabin is a cylindrical structure, and both sides of the separation cabin are connected to the conveying pipe, the sedimentation body is a conical structure, and is communicated with the separation cabin, so that the structure of the deep foundation pit dewatering project is improved, and by adding a filter unit and utilizing the separation cabin in combination with the sedimentation body and the mounting bracket, the pumped groundwater can be discharged under the action of gravity and the sand and water can be separated, thereby effectively reducing the risk of clogging of the conveying pipe.

Description

Technical Field

[0001] The present invention relates to the technical field of building construction, in particular to a drainage pipe structure for deep foundation pit dewatering projects. Background Art

[0002] In deep foundation pit dewatering projects, a well-known and commonly used dewatering method involves using submersible pumps to extract groundwater from pipe wells and drain it into a brick-lined open drainage ditch. This brick-lined ditch, constructed of bricks or mortar, is located two meters from the foundation pit slope and runs along the perimeter. During construction, a height difference is created between the start and end of the ditch, allowing the groundwater to drain into the municipal sewer pipe. Because the use of open drainage ditches requires significant construction site space and can cause slope disturbance during excavation, posing safety risks, existing technologies replace open drainage ditches with pipes. This allows for pressurized drainage, thereby reducing excavation and costs.

[0003] During actual use, it was found that when laying pipelines to transport groundwater, sand and soil are easily deposited, causing the pipelines to be blocked and unable to continue transporting water. At this time, the pipelines need to be replaced, which has an adverse effect on the construction progress and is not conducive to construction efficiency. Summary of the Invention

[0004] The purpose of the present invention is to provide a drainage pipe structure for deep foundation pit dewatering engineering, so as to solve the problem in the prior art that pipelines for transporting groundwater are easily clogged.

[0005] To achieve the above-mentioned objectives, the present invention provides a drainage pipe structure for deep foundation pit dewatering projects, wherein the drainage pipe structure for deep foundation pit dewatering projects includes multiple conveying pipes, multiple mounting brackets and multiple filter units. The multiple conveying pipes and the multiple filter units are alternately arranged along the conveying direction, each of the conveying pipes is threadedly connected to the filter unit, and the mounting brackets are arranged one by one on the lower side of each of the conveying pipes; each of the filter units includes a separation cabin and a sedimentation body, the separation cabin is a cylindrical structure, and is arranged on the upper side of the sedimentation body, and both sides of the separation cabin are connected to the conveying pipe, and the sedimentation body is a conical structure, and is connected to the separation cabin.

[0006] Multiple conveying pipes are used to convey groundwater, and the filtering units are arranged between adjacent conveying pipes. Through the arrangement of the filtering units, the sand and soil in the groundwater can be removed, thereby avoiding the situation where the conveying pipes are blocked by sand and soil. The filtering units are arranged through the separation cabin. After the groundwater enters the separation cabin, the sand and soil settle into the sedimentation body under the action of centrifugal force and gravity, thereby completing the separation of sand and soil in the groundwater. That is, the sedimentation body is used to collect sand and soil that sinks due to its high density.

[0007] Among them, the sedimentation body has a sand discharge valve and a spoiler. The sand discharge valve is arranged at the bottom of the sedimentation body and is rotatably connected to the sedimentation body. The spoiler is arranged at the connection between the sedimentation body and the separation cabin, and the spoiler fits with the top of the sedimentation body.

[0008] The sand discharge valve is used to discharge the settled sand and soil in the sedimentation body from the sedimentation body after it accumulates to a certain amount, thereby realizing the discharge of the accumulated sand and soil. The setting of the spoiler is used to cooperate with the separation cabin. Through the setting of the separation cabin, the groundwater entering the separation cabin, due to the different densities of sand and water, causes the low-density water to rise under the combined action of centrifugal force, centripetal force and fluid drag, while the high-density sand and soil settle into the sedimentation body, thereby completing the separation of sand and groundwater.

[0009] The spoiler has a plurality of grids and a plate body, the plate body is fitted with the top of the sedimentation body and is arranged on the inner side of the sedimentation body, and the plurality of grids all pass through the plate body.

[0010] By providing the plate body with the grid, when the sand and soil in the groundwater settles, the sand and soil can pass through the grid and enter the settlement body. At the same time, the setting of the plate body can also reduce the impact of groundwater on the sand and soil accumulated in the settlement body in the separation cabin. By providing the spoiler, excessive disturbance of the settled and accumulated sand and soil by water during the settlement process can be avoided, which can effectively improve the settlement effect of the sand and soil.

[0011] The separation cabin has a water inlet, a drain outlet and a cabin body. The water inlet is connected to the cabin body, and the central axis of the water inlet is tangent to the outer diameter of the cabin body. The drain outlet is also connected to the cabin body. The cabin body is arranged on the upper side of the sedimentation body.

[0012] The water inlet is tangent to the outer diameter of the cabin, so that the groundwater entering the cabin can swirl in the cabin and give the groundwater a swirling movement, thereby using centrifugal force to achieve separation of sand and water according to the difference in density between the sand and groundwater. The drain outlet is arranged on the upper side of the separation cabin, so that the groundwater with lower density can enter the conveying pipeline from the drain outlet, and the sand with higher density directly enters the sedimentation body, thereby completing the separation of sand and groundwater to reduce the risk of the conveying pipeline being blocked by sand.

[0013] Among them, the mounting bracket includes a placement bracket, a height adjustment bracket and an adjustment seat, the adjustment seat is arranged on the lower side of the height adjustment bracket and is fixedly connected to the height adjustment bracket, and the placement bracket is arranged on the upper side of the height adjustment bracket and is rotatably connected to the height adjustment bracket.

[0014] The placement rack is used to place the conveying pipe, and the height adjustment bracket cooperates with the placement rack to adjust the height of the conveying pipe, so that the height of multiple conveying pipes gradually decreases along the water flow direction, so that groundwater can be transported under the action of gravity after being extracted, thereby reducing energy consumption, and the adjustment seat is used to support the height adjustment bracket.

[0015] Among them, the height adjustment bracket includes a accommodating sleeve and a sliding rod rack, the accommodating sleeve is arranged on the upper side of the adjustment seat and is fixedly connected to the adjustment seat, and the sliding rod rack is arranged on the inner side of the accommodating sleeve and is slidably connected to the accommodating sleeve.

[0016] The accommodating sleeve cooperates with the sliding rod frame, and the sliding rod frame is used to slide in the accommodating sleeve and lock after determining the position, thereby realizing the height adjustment of the height adjustment bracket. The sliding rod frame is also used to support the conveying pipe. The conveying pipe is supported by the sliding rod frame, so that the conveying pipe can still maintain a stable state when it is set at an angle.

[0017] The drainage pipe structure for deep foundation pit dewatering projects of the present invention improves the structure of deep foundation pit dewatering projects in the prior art. By adding the filtering unit and utilizing the separation cabin in combination with the sedimentation body and the mounting bracket, the pumped groundwater can be discharged under the action of gravity and the sand and water can be separated, thereby effectively reducing the risk of blockage of the transmission pipeline. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 The present invention provides an axonometric structural diagram of a drainage pipe structure for a deep foundation pit dewatering project.

[0019] Figure 2 It is an axonometric structural schematic diagram of a filter unit of a drainage pipe structure for a deep foundation pit dewatering project provided by the present invention.

[0020] Figure 3 The present invention provides a schematic cross-sectional structural diagram of a filter unit of a drainage pipe structure for use in a deep foundation pit dewatering project.

[0021] Figure 4 The diagram is a top view of the structure of a filter unit of a drainage pipe structure for a deep foundation pit dewatering project provided by the present invention.

[0022] Figure 5 The present invention provides an axonometric structural diagram of a mounting bracket for a drainage pipe structure used in a deep foundation pit dewatering project.

[0023] Figure 6The present invention provides a schematic cross-sectional structural diagram of a conveying pipeline of a drainage pipe structure for a deep foundation pit dewatering project.

[0024] 1- conveying pipeline, 2- mounting bracket, 3- filtering unit, 4- movable part, 5- undulating seat, 6- pipe body, 7- placement rack, 8- height adjustment bracket, 9- adjustment seat, 10- separation cabin, 11- sedimentation body, 12- air bag, 13- air pump, 14- rotating head, 15- frame body, 16- accommodation sleeve, 17- sliding rod frame, 18- water inlet, 19- drain outlet, 20- cabin body, 21- sand discharge valve, 22- spoiler, 23- grid, 24- plate body. DETAILED DESCRIPTION

[0025] See also Figures 1 to 6 The present invention provides a drainage pipe structure for deep foundation pit dewatering projects. The drainage pipe structure comprises multiple delivery pipes 1, multiple mounting brackets 2, and multiple filter units 3. The delivery pipes 1 and filter units 3 are alternately arranged along the delivery direction. Each delivery pipe 1 is threadedly connected to a filter unit 3, and the mounting brackets 2 are disposed one-to-one on the underside of each delivery pipe 1. Each filter unit 3 comprises a separation capsule 10 and a sedimentation body 11. The separation capsule 10 is a cylindrical structure and is disposed above the sedimentation body 11. Both sides of the separation capsule 10 are connected to the delivery pipe 1. The sedimentation body 11 is a conical structure and is in communication with the separation capsule 10.

[0026] In this embodiment, multiple conveying pipes 1 are used to convey groundwater. The filtering unit 3 is set between adjacent conveying pipes 1. Through the setting of the filtering unit 3, the sand and soil in the groundwater can be removed, thereby avoiding the situation where the conveying pipe 1 is blocked by sand and soil. The filtering unit 3 is set through the separation cabin 10. After the groundwater enters the separation cabin 10, the sand and soil settle into the sedimentation body 11 under the action of centrifugal force and gravity, thereby completing the separation of sand and soil in the groundwater.

[0027] The sedimentation body 11 has a sand discharge valve 21 and a spoiler 22. The sand discharge valve 21 is arranged at the bottom of the sedimentation body 11 and is rotatably connected to the sedimentation body 11. The spoiler 22 is arranged at the connection between the sedimentation body 11 and the separation cabin 10, and the spoiler 22 fits with the top of the sedimentation body 11. In this embodiment, the sand discharge valve 21 is used to discharge the settled sand in the sedimentation body 11 from the sedimentation body 11 after it accumulates to a certain amount, thereby realizing the discharge of the accumulated sand. The setting of the spoiler 22 is used to cooperate with the separation cabin 10. Through the setting of the separation cabin 10, the groundwater entering the separation cabin 10, due to the different densities of sand and water, is caused to rise under the combined action of centrifugal force, centripetal force and fluid drag, while the sand with high density settles into the sedimentation body 11 to complete the separation of sand and groundwater. That is, the sedimentation body 11 is used to collect sand that sinks due to its high density.

[0028] The spoiler 22 includes a plurality of grids 23 and a plate 24. The plate 24 is fitted with the top of the sedimentation body 11 and is disposed on the inner side of the sedimentation body 11. The plurality of grids 23 extend through the plate 24. In this embodiment, the plate 24 provided with the grids 23 allows sand and soil in the groundwater to pass through the grids 23 and enter the sedimentation body 11 during sedimentation. Furthermore, the provision of the plate 24 reduces the impact of groundwater on the sand and soil accumulated in the sedimentation body 11 within the separation cabin 10. The provision of the spoiler 22 prevents excessive water from disturbing the accumulated sand and soil during sedimentation, effectively improving the sedimentation effect of the sand and soil.

[0029] The separation chamber 10 includes a water inlet 18, a drain outlet 19, and a chamber 20. The water inlet 18 is connected to the chamber 20, and the central axis of the water inlet 18 is tangential to the outer diameter of the chamber 20. The drain outlet 19 is also connected to the chamber 20. The chamber 20 is located on the upper side of the sedimentation body 11. In this embodiment, the water inlet 18 is tangential to the outer diameter of the chamber 20, so that groundwater entering the chamber 20 can swirl within the chamber 20, imparting a swirling motion to the groundwater. This centrifugal force separates the sand and groundwater based on their different densities. The drain outlet 19 is located on the upper side of the separation chamber 10, allowing the less dense groundwater to enter the delivery pipe 1 through the drain outlet 19, while the denser sand directly enters the sedimentation body 11, thereby completing the separation of the sand and groundwater, thereby reducing the risk of sand clogging the delivery pipe 1.

[0030] The mounting bracket 2 includes a placement bracket 7, a height adjustment bracket 8, and an adjustment seat 9. The adjustment seat 9 is disposed on the lower side of the height adjustment bracket 8 and is fixedly connected to the height adjustment bracket 8. The placement bracket 7 is disposed on the upper side of the height adjustment bracket 8 and is rotatably connected to the height adjustment bracket 8. In this embodiment, the placement bracket 7 is used to place the delivery pipe 1, and the height adjustment bracket 8 cooperates with the placement bracket 7 to adjust the height of the delivery pipe 1, so that the height of multiple delivery pipes 1 gradually decreases along the direction of water flow, enabling groundwater to be transported under the action of gravity after being extracted, thereby reducing energy consumption. The adjustment seat 9 is used to support the height adjustment bracket 8.

[0031] The height adjustment bracket 8 includes a housing 16 and a sliding rod 17. The housing 16 is disposed on the upper side of the adjustment seat 9 and is fixedly connected to the adjustment seat 9. The sliding rod 17 is disposed on the inner side of the housing 16 and is slidably connected to the housing 16. In this embodiment, the housing 16 cooperates with the sliding rod 17, and the sliding rod 17 is used to slide within the housing 16 and lock after determining the position, thereby achieving the height adjustment of the height adjustment bracket 8. The sliding rod 17 is also used to support the delivery pipe 1. The delivery pipe 1 is supported by the sliding rod 17, so that the delivery pipe 1 can remain stable when it is tilted.

[0032] Each of the conveying pipes 1 includes a movable member 4, an undulating seat 5, and a pipe body 6. The undulating seat 5 is disposed at the inner bottom of the pipe body 6 and is movably connected to the pipe body 6. The movable member 4 is disposed above the undulating seat 5 and engages with the pipe body 6 through the undulating seat 5. In this embodiment, the movable member 4 is disposed at the inner bottom of the pipe body 6. The movable member 4 moves within the inner bottom of the pipe body 6, thereby driving the undulating seat 5 to move, thereby breaking up some of the sediment generated within the pipe body 6, thereby reducing the risk of blockage of the conveying pipe 1 and thus increasing the service life of the conveying pipe 1.

[0033] The undulating seat 5 is provided with an airbag 12 and an air pump 13. The airbag 12 is embedded in the inner bottom of the tube body 6, and the top of the airbag 12 is connected to the undulating seat 5. The air pump 13 is disposed on the outer side of the tube body 6 and is in communication with the airbag 12. In this embodiment, the airbag 12 is in communication with the air pump 13. Since the airbag 12 is embedded in the inner bottom of the tube body 6, when sediment needs to be cleaned, the air pump 13 is activated to drive the airbag 12 to expand and contract, thereby achieving movement at the inner bottom of the tube body 6 and driving the movable member 4 to move, thereby breaking up the sediment at the bottom of the tube body 6, and thus reducing the risk of blockage of the conveying pipeline 1.

[0034] The placement rack 7 includes a rotating head 14 and a frame 15. The frame 15 is disposed above the rotating head 14 and is rotatably connected to the sliding rod frame 17 via the rotating head 14. The frame 15 is engaged with the delivery pipe 1. The rotating head 14 is disposed above the sliding rod frame 17. In this embodiment, the frame 15 is used to support the delivery pipe 1. As the delivery pipe 1 is gradually lowered, the angle of the frame 15 is adjusted by the rotating head 14, so that the delivery pipe 1 can achieve a better engagement with the frame 15 during the tilting process, thereby meeting the needs of conveying groundwater.

[0035] The drainage pipe structure for deep foundation pit dewatering projects of the present invention improves the structure of deep foundation pit dewatering projects in the prior art. By adding the filtering unit 3, utilizing the separation cabin 10 in conjunction with the sedimentation body 11 and the mounting bracket 2, the pumped groundwater can be discharged under the action of gravity and the sand and water can be separated, thereby effectively reducing the risk of blockage of the conveying pipeline 1.

Claims

1. A drainage pipe structure for deep foundation pit dewatering engineering, characterized in that: The drainage pipe structure for deep foundation pit dewatering engineering includes multiple delivery pipes, multiple mounting brackets, and multiple filter units. The multiple delivery pipes and the multiple filter units are alternately arranged along the delivery direction. Each delivery pipe is threadedly connected to the filter unit, and the mounting brackets are arranged on the lower side of each delivery pipe in a one-to-one correspondence. Each filter unit includes a separation cabin and a sedimentation body. The separation cabin is a cylindrical structure and is arranged on the upper side of the sedimentation body. Both sides of the separation cabin are connected to the delivery pipe. The sedimentation body is a conical structure and is connected to the separation cabin. The sedimentation body has a sand discharge valve and a spoiler. The sand discharge valve is arranged at the bottom of the sedimentation body and is rotatably connected to the sedimentation body. The spoiler is arranged at the connection between the sedimentation body and the separation cabin, and the spoiler fits with the top of the sedimentation body.

2. A drainage pipe structure for deep foundation pit dewatering engineering according to claim 1, characterized in that: The spoiler has a plurality of grids and a plate body. The plate body is fitted with the top of the sedimentation body and is arranged on the inner side of the sedimentation body. The plurality of grids all penetrate the plate body.

3. A drainage pipe structure for deep foundation pit dewatering engineering according to claim 2, characterized in that: The separation cabin has a water inlet, a drain outlet and a cabin body. The water inlet is connected to the cabin body, and the central axis of the water inlet is tangent to the outer diameter of the cabin body. The drain outlet is also connected to the cabin body. The cabin body is arranged on the upper side of the sedimentation body.

4. The drainage pipe structure for deep foundation pit dewatering engineering according to claim 1, characterized in that: The mounting bracket includes a placement bracket, a height adjustment bracket and an adjustment seat. The adjustment seat is arranged on the lower side of the height adjustment bracket and is fixedly connected to the height adjustment bracket. The placement bracket is arranged on the upper side of the height adjustment bracket and is rotatably connected to the height adjustment bracket.

5. A drainage pipe structure for deep foundation pit dewatering engineering according to claim 4, characterized in that: The height adjustment bracket includes a receiving sleeve and a sliding rod frame, the receiving sleeve is arranged on the upper side of the adjustment seat and is fixedly connected to the adjustment seat, and the sliding rod frame is arranged on the inner side of the receiving sleeve and is slidably connected to the receiving sleeve.

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