Slurry pumping structure for underground diaphragm wall
By employing a design that uses multiple mud boxes to discharge mud into mud trenches by their own weight during the construction of diaphragm walls, combined with a slurry pump and a mixing mechanism, the problem of redundant equipment during mud extraction was solved, resulting in cost reduction and efficiency improvement.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- ZHEJIANG GEOTECHNICAL TECH CO LTD
- Filing Date
- 2025-05-28
- Publication Date
- 2026-05-19
AI Technical Summary
In existing technologies, multiple mud pumps are required for mud extraction during the construction of diaphragm walls, resulting in high construction costs. Furthermore, the traditional approach increases equipment and maintenance expenses.
Multiple mud tanks are used to discharge mud into the same mud trench by gravity. A single pump is used to extract the mud, and the opening and closing of the discharge pipe is controlled by a control valve to reduce the number of pumps. A mixing mechanism is used to prevent mud sedimentation, and a limit component is used to stabilize the position of the pump.
It effectively reduced equipment procurement, operation and maintenance and installation costs, reduced mud sedimentation, ensured mud fluidity and extraction efficiency, and reduced construction costs.
Smart Images
Figure CN224259374U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of mud transport technology, and in particular to a structure for extracting mud from underground continuous walls. Background Technology
[0002] As a core component of deep foundation pit support systems, the construction quality of diaphragm walls directly impacts the overall safety, stability, and operational efficiency of the project. The slurry system is a crucial element in diaphragm wall construction; it must not only meet the filling requirements during excavation and soil removal but also ensure that the construction progress is unaffected by slurry storage, transportation, and sedimentation treatment.
[0003] Currently, the industry generally adopts the traditional mud management model of "single tank, single pump", which means that one mud tank is equipped with one mud pump to extract mud. However, in the construction process, multiple mud tanks are often required, and each mud tank needs to be equipped with a mud pump and its supporting electrical box and cable facilities, which increases the construction cost. Therefore, further improvement is needed. Utility Model Content
[0004] To reduce construction costs, this application provides a structure for extracting slurry from underground continuous walls.
[0005] This application provides a structure for extracting slurry from underground continuous walls, employing the following technical solution:
[0006] A structure for extracting slurry from a diaphragm wall includes multiple slurry boxes arranged linearly, a slurry trench located on one side of the slurry boxes, and a slurry pump. The excavation length of the slurry trench matches the arrangement distance of the slurry boxes. A slurry outlet pipe is installed at the bottom of the side wall of the slurry box near the slurry trench. The outlet of the slurry outlet pipe extends into the slurry trench and is equipped with a control valve. The slurry pump's pumping port is built into the slurry trench, and the slurry pump is connected to the slurry pumping pipe.
[0007] By adopting the above technical solution, the mud in multiple mud tanks is discharged into the same mud trench by gravity through the mud outlet pipe. The mud pump extracts the mud in the mud trench through the mud pump pipe, which reduces the number of mud pumps used, reduces equipment procurement, daily operation and maintenance and installation costs, thereby effectively reducing construction costs. The opening and closing of the mud outlet pipe is controlled by the control valve.
[0008] Preferably, the upper part of the mud ditch is open, and the mud ditch is covered with a cover plate.
[0009] By adopting the above technical solution, the upper part of the mud trench is opened and covered with a cover plate. On the one hand, it can prevent debris from falling into the mud trench, and on the other hand, it is convenient for construction workers to walk on the cover plate.
[0010] Preferably, the slurry pump is located in the middle of the mud trench.
[0011] By adopting the above technical solution, the pumping pump is preferably located in the middle of the mud trench. This way, the distance between the pumping pump and the mud tanks located at both ends of the mud trench will not be too far, and the distance of mud flow can be relatively small, so as to reduce the deposition of mud in the mud trench.
[0012] Preferably, one of the mud tanks is fixedly connected to a support frame, the support frame is equipped with a hoist, and the slurry pump is fixedly connected to the hoist's lifting rope.
[0013] By adopting the above technical solution, the height of the slurry pump in the mud trench can be easily adjusted using a hoist, which facilitates the installation, inspection and maintenance of the slurry pump.
[0014] Preferably, the mud trench or mud tank is equipped with a limiting component to limit the movement of the slurry pump.
[0015] By adopting the above technical solution, the mud trench or mud tank is equipped with a limiting component to limit the movement of the slurry pump, which can prevent the slurry pump from shifting or shaking, ensure the stable operation of the slurry pump, and thus ensure the normal progress of the mud extraction work.
[0016] Preferably, the limiting assembly includes a pair of clamps located on both sides of the slurry pump and a limiting drive member that drives the clamps to slide to clamp the slurry pump.
[0017] By adopting the above technical solution, a pair of clamps slide and clamp the grout pump under the drive of the limiting drive component, which can limit the grout pump and make the grout pump position more stable during operation.
[0018] Preferably, the mud trench is equipped with a stirring mechanism for agitating the mud.
[0019] By adopting the above technical solution, a stirring mechanism is set up in the mud trench to agitate the mud, which can prevent mud sedimentation, ensure the fluidity of the mud, and facilitate the smooth extraction of mud by the pump.
[0020] Preferably, the stirring mechanism includes a stirring shaft rotatably connected to the inner wall of the mud trough, stirring rods fixedly connected to the stirring shaft, and a stirring motor that drives the stirring shaft to rotate. The stirring shaft is axially parallel to the length direction of the mud trough, and multiple stirring rods are provided. The multiple stirring rods are distributed along the axial direction of the stirring shaft and circumferentially around the stirring shaft.
[0021] By adopting the above technical solution, the stirring motor drives the stirring shaft to rotate, which in turn drives multiple stirring rods distributed along the axial and circumferential directions to stir the mud in the mud trench.
[0022] In summary, this utility model has the following beneficial effects:
[0023] 1. Mud from multiple mud tanks is discharged into the same mud trench by gravity through the discharge pipe. The slurry pump extracts the mud from the mud trench through the slurry pump, which reduces the number of slurry pumps used, reduces equipment procurement, daily operation and maintenance and installation costs, and thus effectively reduces construction costs.
[0024] 2. The pumping pump is preferably located in the middle of the mud trench. This way, the distance between the pumping pump and the mud tanks located at both ends of the mud trench will not be too far, and the distance of mud flow can be relatively small, so as to reduce the deposition of mud in the mud trench.
[0025] 3. By using a pair of clamps to slide and clamp the grout pump under the drive of the limiting drive component, the grout pump can be limited, making the position of the grout pump more stable during operation. Attached Figure Description
[0026] Figure 1 This is a schematic diagram of the overall structure of a structure for extracting mud from a diaphragm wall in Example 1.
[0027] Figure 2 This is a schematic diagram of the mud trench structure in Example 1;
[0028] Figure 3 This is a schematic diagram of the stirring mechanism in Example 2;
[0029] Figure 4 This is a schematic diagram of the limiting component in Embodiment 3.
[0030] In the diagram, 1. Mud tank; 11. Mud outlet pipe; 12. Control valve; 13. Support; 14. Lifting hoist; 2. Mud trench; 21. Cover plate; 3. Mud pump; 31. Mud pumping pipe; 4. Mixing mechanism; 41. Mounting vertical plate; 42. Mixing shaft; 43. Mixing rod; 44. Mixing motor; 5. Limiting component; 51. Clamping plate; 52. Limiting cylinder; 53. Extension rod. Detailed Implementation
[0031] The following is in conjunction with the appendix Figure 1-4 This application will be described in further detail.
[0032] Example 1:
[0033] This application discloses a structure for extracting mud from a diaphragm wall, referring to... Figure 1 , Figure 2The system includes multiple mud tanks 1 arranged linearly, mud trenches 2 located on one side of the mud tanks 1, and a slurry pump 3. The excavation length of the mud trenches 2 matches the arrangement distance of the mud tanks 1. The upper part of the mud trenches 2 is open, and the mud trenches 2 are covered with cover plates 21, which are mesh plates. Multiple cover plates 21 are provided. In this embodiment, there are two rows of mud tanks 1, and the mud trenches 2 are opened on the ground between the two rows of mud tanks 1.
[0034] Each mud tank 1 has a discharge pipe 11 inserted through its bottom side wall near the mud trench 2. A cover plate 21 has an opening for inserting the discharge pipe 11, allowing the pipe opening to extend into the mud trench 2. The bottom inner wall of the mud tank 1 is inclined towards the mud trench 2, and the discharge pipe 11 is equipped with a control valve 12. A pumping pump 3 is located in the middle of the mud trench 2, and its pumping port is built into the mud trench 2. In this embodiment, the middle of the mud trench 2 is not covered with a cover plate 21, and the pumping pump 3 is connected to a pumping pipe 31. A bracket 13 is fixedly connected to the upper surface of both mud tanks 1. A hoist 14 is installed on the bracket 13, and the pumping pump 3 is fixedly connected to the hoisting rope of the hoist 14. In this embodiment, the hoist 14 is an electric hoist.
[0035] The implementation principle of this application embodiment is as follows: when the control valve 12 is opened, the mud in multiple mud tanks 1 is discharged into the same mud trench 2 by its own weight through the discharge pipe 11. The hoist 14 drives the pump 3 to descend, so that the pump port of the pump 3 is built into the mud trench 2. The pump 3 pumps the mud in the mud trench 2 through the pump pipe 31, which reduces the number of pumps 3 used, reduces the equipment purchase, daily operation and maintenance and installation costs, thereby effectively reducing the construction cost. The opening and closing of the discharge pipe 11 is controlled by the control valve 12.
[0036] Example 2:
[0037] The difference from Example 1 is that, referring to Figure 3 The mud trough 2 has a built-in stirring mechanism 4 for agitating the mud. Two sets of stirring mechanisms 4 are located on either side of the slurry pump 3. Each set of stirring mechanisms 4 includes a pair of mounting vertical plates 41 distributed along the length of the mud trough 2, a stirring shaft 42 rotatably connected between the two mounting vertical plates 41, stirring rods 43 fixedly connected to the stirring shaft 42, and a stirring motor 44 driving the stirring shaft 42 to rotate. The stirring shaft 42 is axially parallel to the length of the mud trough 2. Multiple stirring rods 43 are provided, distributed along the axial direction of the stirring shaft 42 and circumferentially around it. The stirring motor 44 is a waterproof motor, fixedly connected to the mounting vertical plates 41, and its output shaft is coaxially fixedly connected to the stirring shaft 42. To improve the service life of the stirring motor 44, a protective cover is fixed to the mounting vertical plates 41 and covers the stirring motor 44.
[0038] The implementation principle of this application embodiment is as follows: the stirring motor 44 drives the stirring shaft 42 to rotate, which drives multiple stirring rods 43 distributed along the axial and circumferential directions to stir the mud in the mud trench 2, prevent the mud from settling, and ensure the fluidity of the mud.
[0039] Example 3:
[0040] The difference from Example 1 is that, referring to Figure 4 The mud trench 2 or mud tank 1 is equipped with a limiting component 5 for limiting the slurry pump 3. In this embodiment, the limiting component 5 includes a pair of clamping plates 51 located on both sides of the slurry pump 3 and a limiting drive member for driving the clamping plates 51 to slide and clamp the slurry pump 3. An extension rod 53 is fixedly connected to the outer wall of the clamping plate 51. The limiting drive member is a limiting cylinder 52. The cylinder body of the limiting cylinder 52 is fixedly connected to the outer wall of the mud tank 1, and the piston rod of the cylinder body of the limiting cylinder 52 is coaxially fixedly connected to the extension rod 53.
[0041] The implementation principle of this application embodiment is as follows: after the grout pump 3 moves down to the position, the piston rod of the limiting cylinder 52 extends to drive the clamping plate 51 to slide and clamp the grout pump 3, which can limit the grout pump 3 and make the position of the grout pump 3 more stable during operation.
[0042] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.
Claims
1. A structure for extracting slurry from a diaphragm wall, characterized in that: It includes multiple mud tanks (1) arranged in a linear pattern, a mud trench (2) located on one side of the mud tanks (1), and a slurry pump (3). The excavation length of the mud trench (2) matches the arrangement distance of the mud tanks (1). A slurry outlet pipe (11) is installed at the bottom of the side wall of the mud tank (1) near the mud trench (2). The outlet of the slurry outlet pipe (11) extends into the mud trench (2). A control valve (12) is installed on the slurry outlet pipe (11). The slurry outlet of the slurry pump (3) is built into the mud trench (2). The slurry pump (3) is connected to a slurry pipe (31).
2. The structure for extracting slurry from a diaphragm wall according to claim 1, characterized in that: The upper part of the mud ditch (2) is open, and the mud ditch (2) is covered with a cover plate (21).
3. The structure for extracting slurry from a diaphragm wall according to claim 1, characterized in that: The slurry pump (3) is located in the middle of the mud trench (2).
4. The structure for extracting slurry from a diaphragm wall according to claim 1, characterized in that: One of the mud tanks (1) has a bracket (13) fixedly connected to its outer wall. The bracket (13) is equipped with a hoist (14), and the slurry pump (3) is fixedly connected to the hoist (14) with a lifting rope.
5. A structure for extracting slurry from a diaphragm wall according to claim 4, characterized in that: The mud trench (2) or mud tank (1) is equipped with a limiting component (5) to limit the movement of the slurry pump (3).
6. A structure for extracting slurry from a diaphragm wall according to claim 5, characterized in that: The limiting component (5) includes a pair of clamping plates (51) located on both sides of the slurry pump (3) and a limiting drive that drives the clamping plates (51) to slide to clamp the slurry pump (3).
7. A structure for extracting slurry from a diaphragm wall according to claim 1, characterized in that: The mud trough (2) is equipped with a stirring mechanism (4) for agitating the mud.
8. A structure for extracting slurry from a diaphragm wall according to claim 7, characterized in that: The stirring mechanism (4) includes a stirring shaft (42) rotatably connected to the inner wall of the mud trough (2), a stirring rod (43) fixedly connected to the stirring shaft (42), and a stirring motor (44) that drives the stirring shaft (42) to rotate. The stirring shaft (42) is axially parallel to the length direction of the mud trough (2). Multiple stirring rods (43) are provided, and the multiple stirring rods (43) are distributed along the axial direction of the stirring shaft (42) and circumferentially distributed around the stirring shaft (42).