Mud and sand separation device for construction of composite pile foundation in deep soft soil area

Abstract

The invention discloses a mud and sand separation device for construction of a composite pile foundation in a deep soft soil area, and relates to the technical field of mud and sand separation, the mud and sand separation device comprises a bearing box, two symmetrically-arranged supporting plates are fixed to the upper end of the bearing box, a filtering plate is installed between the two supporting plates, and a discharging hopper is fixed to the upper ends of the two supporting plates; elastic corrugated plates are fixed to the upper side and the lower side of the filter plate correspondingly, the ends, away from the filter plate, of the elastic corrugated plates are fixedly connected with the supporting plates, a controller is fixed to the side face of one supporting plate, a material guide plate is fixed to one end of the filter plate, and a water storage tank is arranged on the side face of the bearing box. And a recycling assembly is arranged between the receiving box and the water storage tank. The mud sand and mud on the surface of the drilling slag can be effectively removed by flushing the drilling slag with high-pressure water flow, the efficiency is high, and the mud sand and mud separation effect can be further improved by matching with the rolling brush structure and the vibrating structure.

Description

Technical Field

[0001] This application relates to the field of mud and sand separation technology, and in particular to a mud and sand separation device for composite pile foundation construction in deep soft soil areas. Background Technology

[0002] In the process of modern infrastructure construction, the construction of composite pile foundations in deep soft soil areas faces complex geological challenges. These areas typically have soft soil layers with high water content, large void ratio, and strong compressibility. During pile foundation drilling operations, a large amount of drill cuttings mixed with mud and sand are generated. These drill cuttings not only contain unconsolidated construction waste but also mud rich in clay minerals. Direct discharge will not only cause environmental pollution but also lead to a huge waste of resources. Therefore, realizing the resource utilization of drill cuttings through mud and sand separation devices and using the separated materials for foundation pit backfilling and other processes has become a key measure to reduce construction costs and practice the concept of green construction. Currently, most widely used mud and sand separation devices employ cyclone separation technology. Their working principle is based on a solid-liquid separation mechanism under centrifugal force. The device contains a cyclone chamber. When the drill cuttings mixture enters the equipment through the inlet, under the centrifugal force generated by high-speed rotation, the denser mud and sand particles are thrown against the chamber wall and spiral down to the discharge port; while the less dense mud forms an upward flow in the center and is discharged through the overflow port, thus achieving preliminary separation of mud and sand from mud. This separation method has a simple structure, high processing efficiency, and can meet construction requirements under ordinary geological conditions. However, under the special working conditions of deep soft soil areas, traditional cyclone separation technology has revealed obvious limitations. The mud and sand in this area are rich in clay minerals such as montmorillonite and kaolin, which have extremely high viscosity and thixotropy. The high viscosity makes it difficult for the mud to be separated from the mud and sand quickly under the action of centrifugal force, resulting in a significant decrease in separation efficiency. Moreover, the viscous mixture is very easy to adhere to the inner wall of the equipment to form mud cake, which blocks the sand discharge port and overflow channel. Once the equipment is blocked, it not only requires frequent shutdowns for cleaning, but also prolongs the overall construction cycle and increases the cost of manual maintenance and equipment wear and tear. Summary of the Invention

[0003] The purpose of this application is to address the problem that existing cyclone separators have low efficiency in separating drill cuttings with highly viscous mud and slurry adhering to their surfaces, and are prone to clogging. This application provides a mud and sand separation device for composite pile foundation construction in deep soft soil areas.

[0004] To achieve the above objectives, this application specifically adopts the following technical solution: A mud-sand separation device for composite pile foundation construction in deep soft soil areas includes a receiving box. Two symmetrically arranged support plates are fixed to the upper end of the receiving box. A filter plate is installed between the two support plates. A hopper is fixed to the upper end of the two support plates. Elastic corrugated plates are fixed to both the upper and lower sides of the filter plate. The end of the elastic corrugated plate away from the filter plate is fixedly connected to the support plate. A controller is fixed to the side of one of the support plates. A guide plate is fixed to one end of the filter plate. A water storage tank is provided on the side of the receiving box. A recycling component is provided between the receiving box and the water storage tank. A cover plate is installed on the upper end of the water storage tank. A water inlet pipe is fixed to the upper end of the cover plate, and a water delivery pipe is fixed to the upper end of the cover plate. The water delivery pipe extends into the water storage tank. A first water pump is installed on the water delivery pipe. The first water pump is electrically connected to a controller. A guide pipe is fixed to the end of the water delivery pipe away from the water storage tank. Two branch pipes are fixed to the guide pipe. Several booster nozzles are fixed to the branch pipes. The spray ends of the booster nozzles face the filter plate. A roller brush structure is provided on the upper end of the filter plate. A vibrating structure is provided on the upper end of the receiving box. A pulverizing structure is provided inside the receiving box.

[0005] By adopting the above technical solution, the drilling cuttings are fed into the filter plate through the feed pipe. The roller brush structure is activated, which in turn activates the rapping structure. When the rapping structure is working, the filter plate vibrates, causing the drilling cuttings to move towards the guide plate. At the same time, water is drawn out from the water storage tank and sprayed onto the drilling cuttings through a pressurized nozzle. This effectively removes the sticky mud and clods from the surface of the drilling cuttings, improving the removal efficiency.

[0006] Furthermore, the recycling assembly includes a sedimentation tank disposed on the side of the receiving box, a first conveying pipe fixed between the receiving box and the sedimentation tank, a first sludge pump installed on the first conveying pipe, a second sludge pump installed on the side of the sedimentation tank, a second conveying pipe fixed between the sedimentation tank and the water storage tank, a second water pump installed on the second conveying pipe, and the controller is electrically connected to the first sludge pump, the second sludge pump, and the second water pump.

[0007] By adopting the above technical solution, the water and mud inside the receiving tank are pumped into the sedimentation tank, stored and settled inside the sedimentation tank, and then pumped into the water storage tank for reuse, thereby reducing water waste.

[0008] Furthermore, the roller brush structure includes a drive motor fixed to the side of the support plate, and a drive shaft is rotatably connected to the upper end of the two support plates. A brush is fixed on the drive shaft, and the brush is a nylon brush.

[0009] By adopting the above technical solution, the drive motor adjusts the drive shaft and the brush to rotate, which can beat the drill cuttings that have passed through the brush, thereby improving the effect of removing sticky mud and mud.

[0010] Furthermore, the vibrating structure includes a rotating shaft rotatably connected to the upper end of the receiving box, an eccentric wheel fixed on the rotating shaft, and an abutment plate fixed at the end of the filter plate away from the guide plate.

[0011] By adopting the above technical solution, the rotating shaft drives the eccentric wheel to rotate and strike the contact plate, thereby causing the filter plate to vibrate. This can effectively reduce the clogging of the filter plate, and the vibration of the filter plate can also cause the drilling cuttings on its upper end to turn over, improving the removal effect of sticky mud and mud lumps on its surface.

[0012] Furthermore, both the end of the drive shaft and the end of the rotating shaft are fixed with first pulleys, and the two first pulleys are connected by a first transmission belt.

[0013] By adopting the above technical solution, when the drive shaft rotates, it causes the rotating shaft to rotate under the action of the first pulley and the first transmission belt, thereby playing a transmission role.

[0014] Furthermore, a guide post is fixed inside the support plate, and a return spring is slidably sleeved on the guide post. The filter plate is slidably sleeved on the guide post, and the two ends of the return spring are fixedly connected to the support plate and the filter plate, respectively.

[0015] By adopting the above technical solution, when the cam strikes the abutment block, the filter plate slides upward on the guide post under the force. When the cam separates from the abutment plate, the filter plate slides downward under the action of the return spring, thereby realizing the vibration of the filter plate.

[0016] Furthermore, a protective pad is fixed to the lower end of the contact plate, and the protective pad is a polyurethane rubber pad.

[0017] By adopting the above technical solution, the protective pad plays a protective role, reducing the damage to the contact plate when the cam hits the contact plate, and the polyurethane rubber pad has good wear resistance.

[0018] Furthermore, the crushing structure includes several drive shafts rotatably connected inside the receiving box, and several crushing blades are fixed on the drive shafts.

[0019] By adopting the above technical solution, the rotation of the drive shaft drives the pulverizing blades to rotate, which can agitate and pulverize the mud and sand falling into the receiving box, reduce the phenomenon of mud and sand settling to the bottom, and make it easier to discharge.

[0020] Furthermore, a second pulley is fixed to both the end of the rotating shaft and one of the ends of the transmission shaft. The two second pulleys are connected by a second transmission belt. A transmission gear is fixed to the end of the transmission shaft, and two adjacent transmission gears mesh with each other.

[0021] By adopting the above technical solution, when the rotating shaft rotates, the action of the second pulley and the second transmission belt causes one of the transmission shafts to rotate, and then the other transmission shafts rotate under the action of the transmission gear, thereby playing a transmission role.

[0022] In summary, this application includes at least one of the following beneficial effects; 1. In this application, when using the mud and sand separation device, the roller brush structure is turned on, so that the roller brush structure vibration structure works. The first water pump is turned on to draw water out of the water storage tank. The drawn water is sprayed out as a high-pressure water jet through the booster nozzle. Then, the drill cuttings are added into the feed hopper and fall onto the filter plate through the feed hopper. The drill cuttings on the filter plate are washed by the high-pressure water jet sprayed from the booster nozzle. The high-pressure water jet can effectively remove mud, sand and mud from the surface of the drill cuttings with high efficiency.

[0023] 2. In this application, during the process of separating mud and lumps from the surface of drill cuttings using high-pressure water flow, a drive motor operates, which drives the drive shaft to rotate, thereby causing the brush to rotate. During the rotation of the brush, the slag on the filter plate continuously passes through the brush. When passing through the brush, the rotating brush can strike the mud and lumps attached to the surface of the slag, causing the mud and slag to fall off or loosen, thus improving the separation effect of mud and lumps. Furthermore, the drill cuttings that have passed through the brush will be washed again by high-pressure water flow, thereby making the separation of mud and lumps more thorough.

[0024] 3. When the drive shaft rotates, the first pulley and the first transmission belt cause the shaft to drive the cam to rotate. During the rotation of the cam, it strikes the contact plate, causing the filter plate to slide upward on the guide post. When the cam is not in contact with the contact plate, the filter plate slides downward under the action of the return spring. The continuous striking of the contact plate by the cam, combined with the return spring, enables the filter plate to vibrate up and down. This up-and-down vibration of the filter plate can shake off the mud and sand adhering to its mesh, reducing the clogging of the filter plate and thus improving its permeability. At the same time, the up-and-down vibration of the filter plate can agitate the drill cuttings on the filter plate, making them more susceptible to stress and thus making it easier for the mud and sand on the surface of the drill cuttings to fall off, improving the separation effect between the mud and sand and the drill cuttings. 4. When the drive shaft rotates, the second pulley, the second transmission belt, and the transmission gear cause all transmission shafts to rotate. This rotation drives the crushing blades to rotate, which in turn crushes the slurry falling into the receiving box. This reduces the problem of large slurry clumps obstructing the flow into the settling tank. Multiple sets of rotating crushing blades effectively reduce sedimentation at the bottom of the receiving box. Attached Figure Description Figure 1 This is a first three-dimensional structural schematic diagram of the mud and sand separation device in this application; Figure 2 This is a second three-dimensional structural schematic diagram of the mud and sand separation device in this application; Figure 3 This is a third three-dimensional structural schematic diagram of the mud and sand separation device in this application; Figure 4 This is a schematic diagram showing the coordination of the water supply pipe, guide pipe, branch pipe, and booster nozzle in this application; Figure 5 This is a schematic diagram showing the interaction of the recycling components, the roller brush structure, and the rapping structure in this application; Figure 6 This is the structural intent of the filter plate and support plate in this application; Figure 7 This application Figure 5 Enlarged diagram of point A in the middle.

[0025] Explanation of reference numerals in the attached figures: 1. Receiving box; 2. Support plate; 21. Filter plate; 22. Feed hopper; 23. Flexible corrugated plate; 24. Controller; 25. Guide plate; 3. Water storage tank; 31. Cover plate; 32. Water inlet pipe; 33. Water delivery pipe; 34. First water pump; 35. Guide pipe; 36. Diverter pipe; 37. Booster nozzle; 4. Recovery assembly; 41. Sedimentation tank; 42. First conveying pipe; 43. First sludge pump; 44. Second sludge pump; 45. Second conveying pipe ; 46. Second water pump; 5. Roller brush structure; 51. Drive motor; 52. Drive shaft; 53. Brush; 6. Vibrating structure; 61. Rotating shaft; 62. Eccentric wheel; 63. Contact plate; 64. Guide post; 65. Return spring; 66. First pulley; 67. First transmission belt; 68. Protective pad; 7. Crushing structure; 71. Transmission shaft; 72. Crushing blade; 73. Second pulley; 74. Second transmission belt; 75. Transmission gear. Detailed Implementation

[0026] The following is in conjunction with the appendix Figure 1-7 This application will be described in further detail.

[0027] This application discloses a mud-sand separation device for composite pile foundation construction in deep soft soil areas.

[0028] Reference Figures 1-4A mud-sand separation device for composite pile foundation construction in deep soft soil areas includes a receiving box 1. Two symmetrically arranged support plates 2 are fixed to the upper end of the receiving box 1. A filter plate 21 is installed between the two support plates 2, and the filter plate 21 is inclined to facilitate the movement of drilling cuttings on it. A hopper 22 is fixed to the upper end of the two support plates 2. Elastic corrugated plates 23 are fixed to both the upper and lower sides of the filter plate 21. The end of the elastic corrugated plate 23 away from the filter plate 21 is fixedly connected to the support plate 2. A controller 24 is fixed to the side of one of the support plates 2. A guide plate 25 is fixed to one end of the filter plate 21. A water storage tank 3 is provided on the side of the receiving box 1. The receiving box 1 and the water storage tank 3 are connected... A recycling component 4 is provided in the middle. A cover plate 31 is installed on the upper end of the water storage tank 3. A water supply pipe 32 is fixed on the upper end of the cover plate 32. A water delivery pipe 33 is fixed on the upper end of the cover plate 33. The water delivery pipe 33 extends into the interior of the water storage tank 3. A first water pump 34 is installed on the water delivery pipe 33. The first water pump 34 is electrically connected to the controller 24. A guide pipe 35 is fixed on the end of the water delivery pipe 33 away from the water storage tank 3. Two diversion pipes 36 are fixed on the guide pipe 35. Several booster nozzles 37 are fixed on the diversion pipes 36. The spray end of the booster nozzles 37 faces the filter plate 21. A roller brush structure 5 is provided on the upper end of the filter plate 21. A vibrating structure 6 is provided on the upper end of the receiving box 1. A crushing structure 7 is provided inside the receiving box 1.

[0029] The recycling component 4 includes a sedimentation tank 41 disposed on the side of the receiving box 1, a first conveying pipe 42 fixed between the receiving box 1 and the sedimentation tank, a first sludge pump 43 installed on the first conveying pipe 42, a second sludge pump 44 installed on the side of the sedimentation tank, a second conveying pipe 45 fixed between the sedimentation tank 41 and the water storage tank 3, a second water pump 46 installed on the second conveying pipe 45, and the controller 24 is electrically connected to the first sludge pump 43, the second sludge pump 44, and the second water pump 46.

[0030] When using this mud and sand separation device, the roller brush structure 5 is turned on, which makes the vibration structure 6 of the roller brush structure 5 work. The first water pump 34 is turned on, and the water inside the water storage tank 3 is pumped out through the first water pump 34 and sent into the guide pipe 35 through the water delivery pipe 33. After passing through the guide pipe 35, it enters the diversion pipe 36 and finally sprays high-pressure water through the booster nozzle 37. Then, the drill cuttings are put into the feed hopper 22 and fall onto the filter plate 21 through the feed hopper 22. The drill cuttings on the filter plate 21 are washed by the high-pressure water sprayed by the booster nozzle 37. The high-pressure water can effectively remove mud and sand and mud from the surface of the drill cuttings with high efficiency. When the vibration structure 6 is working, the filter plate 21 vibrates, thereby conveying the drill cuttings to the position of the guide plate 25 and falling down along the guide plate 25. The water used to wash the slag, along with the washed-down mud and sand, falls through the holes in the filter plate 21 into the receiving box 1. Then, the first sludge pump 43 pumps the water, mud, and sand from the receiving box 1 into the sedimentation tank. The sedimentation tank can settle the water. The settled water is then pumped into the storage tank 3 by the second water pump 46, achieving water reuse and reducing water waste. The second sludge pump 44 can extract the mud, sand, and sand settled at the bottom of the sedimentation tank 41, thus playing a role in sewage discharge.

[0031] Reference Figure 2 and Figure 5 The roller brush structure 5 includes a drive motor 51 fixed on the side of the support plate 2, and a drive shaft 52 rotatably connected to the upper end of the two support plates 2. A brush 53 is fixed on the drive shaft 52. The brush 53 is located between the two diverter pipes 36. The brush 53 is a nylon brush 53.

[0032] During the process of separating the mud and clods on the surface of the drill cuttings using high-pressure water flow, the drive motor 51 operates, driving the drive shaft 52 to rotate, which in turn causes the brush 53 to rotate. As the brush 53 rotates, the slag on the filter plate 21 continuously passes through the brush 53. When passing through the brush 53, the rotating brush 53 can strike the mud and clods attached to the surface of the slag, causing the mud and slag to fall off or loosen, thus improving the separation effect of mud and clods. Furthermore, the drill cuttings that have passed through the brush 53 will be washed again by the high-pressure water flow, making the separation of mud and clods even more thorough.

[0033] Reference Figure 5 and Figure 6 The vibrating structure 6 includes a rotating shaft 61 rotatably connected to the upper end of the receiving box 1, an eccentric wheel 62 fixed on the rotating shaft 61, and an abutment plate 63 fixed at the end of the filter plate 21 away from the guide plate 25.

[0034] Both the end of the drive shaft 52 and the end of the rotating shaft 61 are fixed with first pulleys 66, and the two first pulleys 66 are connected by a first transmission belt 67.

[0035] In addition, a guide post 64 is fixed inside the support plate 2, and a return spring 65 is slidably sleeved on the guide post 64. The filter plate 21 is slidably sleeved on the guide post 64, and the two ends of the return spring 65 are fixedly connected to the support plate 2 and the filter plate 21 respectively.

[0036] Furthermore, a protective pad 68 is fixed to the lower end of the contact plate 63. The protective pad 68 is a polyurethane rubber pad.

[0037] When the drive shaft 52 rotates, its first pulley 66 rotates accordingly, and under the action of the first transmission belt 67, the first pulley 66 at the end of the rotating shaft 61 rotates, thereby causing the rotating shaft 61 to rotate. During the rotation of the rotating shaft 61, the cam rotates, and during the rotation of the cam, it strikes the abutment plate 63. After being struck, the abutment plate 63 causes the filter plate 21 to slide upward on the guide post 64 and pulls the return spring 65. When the cam is not in contact with the abutment plate 63, the filter plate 21 slides downward under the action of the return spring 65. The cam continuously strikes the abutment plate 63, in conjunction with... The return spring 65 enables the filter plate 21 to vibrate up and down. This up-and-down vibration of the filter plate 21 conveys the drill cuttings, causing them to move towards the guide plate 25. The up-and-down vibration of the filter plate 21 also dislodles the mud and clods adhering to its mesh, reducing clogging and improving its permeability. Simultaneously, the up-and-down vibration of the filter plate 21 agitates the drill cuttings, subjecting them to force and making it easier for mud and clods on the surface to fall off, thus improving the separation effect between mud, slurry, and drill cuttings.

[0038] Reference Figure 5 and Figure 7 The crushing structure 7 includes several drive shafts 71 rotatably connected inside the receiving box 1, and several crushing blades 72 are fixed on the drive shafts 71.

[0039] The rotating shaft 61 and one of the transmission shafts 71 are both fixed with a second pulley 73. The two second pulleys 73 are connected by a second transmission belt 74. The transmission shaft 71 is fixed with a transmission gear 75, and two adjacent transmission gears 75 mesh with each other.

[0040] When the drive shaft 52 rotates, the second pulley 73 at its end rotates accordingly, and under the action of the second transmission belt 74, the second pulley 73 at the end of the transmission shaft 71 rotates, thereby causing the transmission shaft 71 with the second pulley 73 to rotate. When the transmission shaft 71 with the second pulley 73 rotates, the transmission gear 75 at its end rotates accordingly, and drives the adjacent transmission gear 75 to rotate, thereby causing all the transmission shafts 71 to rotate. When the transmission shaft 71 rotates, it drives the crushing blades 72 to rotate. The rotation of the crushing blades 72 can crush the mud falling into the receiving box 1, thereby reducing the problem of mud accumulating into large pieces and affecting the entry into the sedimentation tank 41. The multiple sets of rotating crushing blades 72 can effectively reduce the sedimentation phenomenon at the bottom of the receiving box 1.

[0041] Working Principle: When using this mud and sand separation device, the drive motor 51 is turned on, which drives the drive shaft 52 to rotate, thereby causing the brush 53 to rotate. As the drive shaft 52 rotates, its first pulley 66 rotates accordingly, and under the action of the first transmission belt 67, the first pulley 66 at the end of the rotating shaft 61 rotates, thus causing the rotating shaft 61 to rotate. During the rotation of the rotating shaft 61, the cam rotates, striking the contact plate 63. After being struck, the contact plate 63 causes the filter plate 21 to slide upwards on the guide post 64, pulling the return spring 65. When the cam is no longer in contact with the contact plate 63, the filter plate 21 slides downwards under the action of the return spring 65. Through the continuous striking of the contact plate 63 by the cam, combined with the return spring 65, the filter plate 21 can achieve reciprocating vibration up and down. Then, the first water pump 34 is turned on, and water is pumped out of the water storage tank 3 and sent into the guide pipe 35 through the water delivery pipe 33. After passing through the guide pipe 35, it enters the diversion pipe 36 and finally sprays high-pressure water through the booster nozzle 37. Then, the drill cuttings are added into the feed hopper 22 and fall onto the filter plate 21. The drill cuttings on the filter plate 21 are washed by the high-pressure water sprayed by the booster nozzle 37. The high-pressure water can effectively remove mud and sand and mud from the surface of the drill cuttings. When the filter plate 21 vibrates, it can transport the drill cuttings. When the drill cuttings are transported to the position of the brush 53, the rotating brush 53 can hit the mud and sand and mud lumps attached to the surface of the slag, causing the mud and sand and mud lumps to fall off or loosen, improving the separation effect of mud and sand and mud lumps. The drill cuttings are transported to the position of the guide plate 25 and fall down along the guide plate 25. Meanwhile, when the drive shaft 52 rotates, the second pulley 73 at its end rotates accordingly, and under the action of the second transmission belt 74, the second pulley 73 at the end of the transmission shaft 71 rotates, thereby causing the transmission shaft 71 with the second pulley 73 to rotate. When the transmission shaft 71 with the second pulley 73 rotates, the transmission gear 75 at its end rotates accordingly, and drives the adjacent transmission gear 75 to rotate, thereby causing all the transmission shafts 71 to rotate. When the transmission shaft 71 rotates, it drives the crushing blade 72 to rotate. The rotation of the crushing blade 72 can crush the mud that falls into the receiving box 1. The water used to wash the slag, along with the washed-down mud and sand, falls through the holes in the filter plate 21 into the receiving box 1. Then, the first sludge pump 43 pumps the water, mud, and sand from the receiving box 1 into the sedimentation tank. The sedimentation tank can settle the water. The settled water is then pumped into the storage tank 3 by the second water pump 46, achieving water reuse and reducing water waste. The second sludge pump 44 can extract the mud, sand, and sand settled at the bottom of the sedimentation tank 41, thus playing a role in sewage discharge.

Claims

1. A mud-sand separation device for composite pile foundation construction in deep soft soil areas, comprising a receiving box (1), characterized in that: The receiving box (1) has two symmetrically arranged support plates (2) fixed at its upper end. A filter plate (21) is installed between the two support plates (2). A hopper (22) is fixed at the upper end of the two support plates (2). Elastic corrugated plates (23) are fixed on both the upper and lower sides of the filter plate (21). The end of the elastic corrugated plate (23) away from the filter plate (21) is fixedly connected to the support plate (2). A controller (24) is fixed on the side of one of the support plates (2). A guide plate (25) is fixed at one end of the filter plate (21). A water storage tank (3) is provided on the side of the receiving box (1). A recycling component (4) is provided between the receiving box (1) and the water storage tank (3). A cover plate (31) is installed on the upper end of the water storage tank (3). A water supply pipe (32) is fixed, and a water delivery pipe (33) is fixed at the upper end of the installation pipe. The water delivery pipe (33) extends into the water storage tank (3). A first water pump (34) is installed on the water delivery pipe (33). The first water pump (34) is electrically connected to the controller (24). A guide pipe (35) is fixed at the end of the water delivery pipe (33) away from the water storage tank (3). Two branch pipes (36) are fixed on the guide pipe (35). Several booster nozzles (37) are fixed on the branch pipes (36). The spray end of the booster nozzles (37) faces the filter plate (21). A roller brush structure (5) is provided at the upper end of the filter plate (21). A vibrating structure (6) is provided at the upper end of the receiving box (1). A crushing structure (7) is provided inside the receiving box (1).

2. The mud-sand separation device for composite pile foundation construction in deep soft soil areas according to claim 1, characterized in that: The recycling component (4) includes a sedimentation tank (41) disposed on the side of the receiving box (1), a first conveying pipe (42) fixed between the receiving box (1) and the sedimentation tank, a first sludge pump (43) installed on the first conveying pipe (42), a second sludge pump (44) installed on the side of the sedimentation tank, a second conveying pipe (45) fixed between the sedimentation tank (41) and the water storage tank (3), a second water pump (46) installed on the second conveying pipe (45), and the controller (24) is electrically connected to the first sludge pump (43), the second sludge pump (44), and the second water pump (46).

3. The mud-sand separation device for composite pile foundation construction in deep soft soil areas according to claim 1, characterized in that: The roller brush structure (5) includes a drive motor (51) fixed on the side of the support plate (2), and a drive shaft (52) is rotatably connected to the upper ends of the two support plates (2). A brush (53) is fixed on the drive shaft (52), and the brush (53) is a nylon brush (53).

4. The mud-sand separation device for composite pile foundation construction in deep soft soil areas according to claim 3, characterized in that: The vibrating structure (6) includes a rotating shaft (61) rotatably connected to the upper end of the receiving box (1), an eccentric wheel (62) fixed on the rotating shaft (61), and an abutment plate (63) fixed at the end of the filter plate (21) away from the guide plate (25).

5. The mud-sand separation device for composite pile foundation construction in deep soft soil areas according to claim 4, characterized in that: Both the end of the drive shaft (52) and the end of the rotating shaft (61) are fixed with first pulleys (66), and the two first pulleys (66) are connected by a first transmission belt (67).

6. The mud-sand separation device for composite pile foundation construction in deep soft soil areas according to claim 1, characterized in that: The support plate (2) has a guide post (64) fixed inside. A reset spring (65) is slidably sleeved on the guide post (64). The filter plate (21) is slidably sleeved on the guide post (64). The two ends of the reset spring (65) are fixedly connected to the support plate (2) and the filter plate (21) respectively.

7. The mud-sand separation device for composite pile foundation construction in deep soft soil areas according to claim 4, characterized in that: The lower end of the contact plate (63) is fixed with a protective pad (68), which is a polyurethane rubber pad.

8. The mud-sand separation device for composite pile foundation construction in deep soft soil areas according to claim 4, characterized in that: The crushing structure (7) includes several drive shafts (71) rotatably connected inside the receiving box (1), and several crushing blades (72) are fixed on the drive shafts (71).

9. A mud-sand separation device for composite pile foundation construction in deep soft soil areas according to claim 8, characterized in that: The end of the rotating shaft (61) and the end of one of the transmission shafts (71) are both fixed with a second pulley (73). The two second pulleys (73) are connected by a second transmission belt (74). The end of the transmission shaft (71) is fixed with a transmission gear (75), and two adjacent transmission gears (75) mesh with each other.

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