Soft soil roadbed backfill material recycling integrated treatment device

Abstract

The application discloses a kind of soft soil subgrade backfill material recycling integrated processing device, including bearing frame and the mixing bin on bearing frame, control mechanism, propelling mechanism;Mixing bin one end is equipped with mixing mechanism, and mixing mechanism is equipped with crushing mechanism, propelling mechanism is located in the other end of mixing bin, control mechanism is located between propelling mechanism and mixing mechanism, and mixing bin inside is equipped with stirring mechanism;Soft soil first enters crushing mechanism and is broken, and large stone block stone material is mixed therein, then enters mixing mechanism and adds curing agent to carry out preliminary mixing, then enters stirring mechanism and carries out depth stirring, and then is mixed by propelling mechanism and is stirred again and is propelled to mix.This application can crush the stone block mixed in soil by crushing mechanism to meet the mixing and stirring requirements, and the soil and curing agent can be smoothly stirred by subsequent mixing mechanism, stirring mechanism and propelling mechanism, so that it is mixed evenly, and finally the support strength is improved and guaranteed after backfilling.

Description

Technical Field

[0001] This invention belongs to the field of municipal construction waste recycling technology, and specifically relates to an integrated treatment device for the recycling of soft soil roadbed backfill material. Background Technology

[0002] Municipal engineering construction often involves road construction, pipelines, and foundation pit excavation and backfilling. These constructions generate large amounts of excavated materials such as soil and stone. Long-term storage of these materials can disrupt construction and traffic, and also generate dust. The usual approach is to reuse them, including conventional backfilling methods. However, simple backfilling presents several problems, such as: 1) Simple backfilling often results in low strength due to loose soil and lack of support, leading to settlement during ground use; 2) A common method to reinforce backfill is to directly add a hardener, but the presence of large stones in the soil or uneven distribution of the hardener can affect the hardening effect and the quality of the backfill. Therefore, a solution to these problems is needed.

[0003] A search revealed a prior art device (CN 113926828 B) for processing municipal construction waste recycled and consolidated soil. This device includes a feeding mechanism, a crusher, a screening mechanism, a mixing mechanism, a base plate, a mixing tank, a mud-blocking device, a frame, hydraulic support legs, rollers, a water inlet pipe, a water volume control device, and a motor. Several rollers are located below the base plate, and hydraulic support legs are fixedly installed on both sides of the base plate. A mixing tank is fixedly installed on the lower side of the base plate, containing two identical mixing mechanisms. A water inlet pipe with a water volume control device is located on one side of the mixing tank, and a mud-blocking device is located at the upper end of the side water inlet pipe. A screening mechanism is located above the mixing tank, and a crusher is located above the screening mechanism. This invention can fully mix construction waste and, by adding a screening mechanism, screen large aggregate particles, enhancing the mixing effect. It can also uniformly add solidifying agent, resulting in strong self-compacting fluidity after mixing, good backfilling effect, and significantly reduced later risks; it also solves the problem of low backfill strength in direct backfilling.

[0004] However, in the mixing of the curing agent, the mixing is mainly carried out by stirring rods and stirring blades. In order not to affect or interfere with the transmission effect of the spiral stirring rod, the stirring rod and stirring blade can only stir the surface of the mixture. The actual function and effect of the spiral stirring rod is transmission, and its stirring effect on the mixture itself is low. Therefore, during the stirring process, the bottom layer of the mixture receives less curing agent. In addition, the bottom layer of the mixture has a low stirring effect, so the curing agent is mostly mixed on the upper layer of the mixture, resulting in an uneven mixing effect of the mixture as a whole.

[0005] Further, a search revealed a soft soil improvement and mixing equipment and its usage method for construction machinery processing, with publication number CN 117799060 A. This equipment and method, by distributing crushed stone and curing agent from the feeding section in equal proportions with the leveled soft soil spread on the conveying section, can fully mix the materials, shorten the mixing time, solve the problem of uneven mixing, ensure the quality of the improved soft soil meets standards, and improve work efficiency. By using a method of mixing the curing agent with the backfill material before backfilling, the two can be fully and evenly mixed, improving the strength of the backfill. However, there are also corresponding drawbacks, namely, the presence of large stones in the backfill material not only hinders the mixing of the two materials but also seriously affects the operation of the mixing mechanism.

[0006] Based on the above analysis of existing technologies, although soil backfilling has solved some of the problems in the treatment of excavated materials, there are still some drawbacks in the pretreatment process of soil backfilling. In order to address these drawbacks and combine existing technologies, this invention provides an integrated soil treatment device to ensure that the backfill material can be successfully backfilled and achieve the corresponding support strength. Summary of the Invention

[0007] The purpose of this invention is to overcome the shortcomings of the prior art and provide an integrated treatment device for the reuse of soft soil roadbed backfill material. The device can crush the stones mixed in the soil through a crushing mechanism to meet the mixing requirements. The subsequent mixing mechanism, stirring mechanism, and propulsion mechanism can smoothly mix the soil and the solidifying agent to make them evenly mixed. Finally, after backfilling, the device can improve and ensure the supporting strength of the soft roadbed soil, thus completing the reuse of soft roadbed soil.

[0008] To achieve the above objectives, the technical solution adopted by the present invention is as follows:

[0009] An integrated treatment device for the reuse of soft soil roadbed backfill material includes a support frame and a mixing chamber, a control mechanism, and a propulsion mechanism on the support frame. One end of the mixing chamber is equipped with a mixing mechanism, and the mixing mechanism is equipped with a crushing mechanism. The propulsion mechanism is located at the other end of the mixing chamber, and the control mechanism is located between the propulsion mechanism and the mixing mechanism. The mixing chamber is equipped with a stirring mechanism. The soft soil first enters the crushing mechanism to crush the large stones mixed in it, then enters the mixing mechanism to add a solidifying agent for preliminary mixing, then enters the stirring mechanism for deep mixing, and finally enters the propulsion mechanism for secondary feeding and mixing.

[0010] The support frame includes a first support and a second support. One end of the first support is provided with a support shaft, which is inserted into the second support. The first support can slide along the support shaft to adjust the length of the support frame to adapt to the usage requirements of the construction site. One end of the support frame is provided with a traction arm for connecting an external traction vehicle.

[0011] The mixing chamber is equipped with a buffer chamber and a mixing chamber. There is a pair of mixing chambers located on both sides of the buffer chamber. The bottom of the buffer chamber is inclined, and a sludge pump is provided at one end of the buffer chamber.

[0012] The crushing mechanism includes a tank body with a feed inlet at the top. Inside the tank body are a distribution plate, a support frame, a crushing disc, and a second motor. The support frame is fixedly connected to the inner wall of the tank body, and the second motor is fixed on the support frame. An eccentric wheel is mounted on the output shaft of the second motor. The crushing disc is mounted on the support frame, with protrusions around its circumference and an adjustment hole at its center. The eccentric wheel is located within the adjustment hole. The distribution plate is mounted on the crushing disc and is fixedly connected to the end of the output shaft of the second motor. The second motor drives the distribution plate and the crushing disc to rotate. Driven by the eccentric wheel, the crushing disc gradually approaches the inner wall of the tank body, crushing the stones between the crushing disc and the inner wall of the tank body. The rotation of the distribution plate disperses the soil and the mixed stones.

[0013] The mixing mechanism includes a first housing, the top of which is connected to a tank. A first guide plate is provided on the top of the first housing, a second guide plate is provided below the first guide plate, a U-shaped shell is provided below the second guide plate, a bottom plate is provided below the U-shaped shell, and a third guide plate is provided on both sides of the bottom plate. The first guide plate, the second guide plate, the third guide plate, the U-shaped shell, and the bottom plate are fixedly connected to the inner wall of the first housing at both ends. A first motor and a protective shell are provided on one side of the bottom plate. The protective shell is fixedly connected to the bottom plate, and the first motor is fixed on the protective shell.

[0014] The inner walls on both sides of the U-shaped shell are provided with a first sealing plate and a second sealing plate that are interlocked with each other. The first sealing plate is provided with a first spring inside, and the second sealing plate is provided with an adjusting shaft on one side. The adjusting shaft is slidably connected to the bottom plate, and the end of the adjusting shaft is provided with a ball. The first spring pushes the second sealing plate to slide down and close the opening between the U-shaped shell and the bottom plate. The U-shaped shell, the second sealing plate, and the bottom plate constitute a box for holding the curing agent. The first box is provided with a feed pipe on one side for adding the curing agent.

[0015] The first motor output shaft is connected to the main shaft, which is housed in the protective shell and rotates with it. The main shaft is hollow and has a through groove. A first electric push rod is located in the hollow part of the main shaft. A first connecting arm is evenly distributed on the main shaft, and a first support block is located at the end of the first connecting arm. A second support block is located between adjacent first support blocks, and a second connecting arm is located on the second support block. The second connecting arm is located in the through groove and is fixedly connected to the top shaft of the first electric push rod. The second support block is hollow and has a partition plate. A third support block is located on both sides of the second support block. The third support block is hollow and inserts into the second support block. A second spring is located inside the third support block, and the second spring touches the partition plate.

[0016] A water tank is provided on one side of the first box body, and spray pipes are provided on both sides of the second guide plate. The spray pipes are connected to the water tank. A set of first stirring shafts is provided between the third guide plate and the inner wall of the first box body. The end of the first stirring shaft is provided with a first gear and they mesh with each other. One set of first stirring shafts is provided with a sixth motor connected to the end of the first stirring shaft. The sixth motor is fixed to the side wall of the first box body by a fixing seat.

[0017] The control mechanism includes a first fixed frame, a first guide shaft, a first control block, a second electric actuator, a second control block, a second fixed frame, a third electric actuator, and a second guide shaft. The first fixed frame is fixed to the top of the mixing chamber, the second fixed frame is fixed to the bottom of the mixing chamber, the first control block is located below the first fixed frame, the first control block has a first guide shaft and is slidably connected to the first fixed frame, the second electric actuator is fixed to the first fixed frame, and the top shaft of the second electric actuator passes through the first fixed frame and is fixedly connected to the first control block. The second control block is located above the second fixed frame, the second control block has a second guide shaft and is slidably connected to the second fixed frame, the third electric actuator is fixed to the second fixed frame, and the top shaft of the third electric actuator passes through the second fixed frame and is fixedly connected to the second control block.

[0018] The propulsion mechanism includes a second housing for holding a curing agent. The second housing has a limiting plate and a control plate on its side. The bottom plate of the second housing has a first through hole. The control plate is inserted into the bottom of the second housing and slidably connected to it. The control plate has a second through hole. A third spring is provided between the control plate and the limiting plate. An adjusting block is provided at the bottom of the control plate. The bottom of the second housing has a through groove for the sliding of the adjusting block.

[0019] The second housing is also equipped with a pair of adjusting shafts. The bottom of the adjusting shafts is equipped with an arc-shaped arm and a corresponding adjusting block. The adjusting shafts are connected by a sprocket and a chain. The top of the second housing is equipped with a third motor and connected to the adjusting shafts. The third motor drives the adjusting shafts to rotate, causing the arc-shaped arm to push the adjusting block and the control plate, thereby making the first through hole and the second through hole coincide for material feeding.

[0020] The second chamber has a first stirring fan plate and a second stirring fan plate at its lower part, and both ends of the two are rotatably connected to the side wall of the buffer chamber. The first stirring fan plate and the second stirring fan plate are located on one side of the second chamber, so that the mixture passes through the discharge port of the second chamber and then through the first and second fan plates. The first stirring fan plate has a mounting box and a fourth motor on one side. The first stirring fan plate has a first rotating shaft at one end and is rotatably connected to the mounting box. The second stirring fan plate has a second rotating shaft at one end and is rotatably connected to the mounting box. The second rotating shaft has a sprocket and a bevel gear. The first rotating shaft has a sprocket and is connected to the sprocket on the first rotating shaft by a chain. The fourth motor is located at the bottom of the mixing chamber. The shaft end of the fourth motor has a drive shaft and is located in the mounting box. The drive shaft has a bevel gear and meshes with the bevel gear on the second rotating shaft.

[0021] The stirring mechanism includes a fifth motor, an auger propulsion shaft, a second stirring shaft, a fixed shaft, and a third fixed frame. The auger propulsion shaft is located inside the stirring chamber and is rotatably connected to both ends of the stirring chamber. The third fixed frame is fixed to both ends of the stirring chamber. The auger propulsion shaft is hollow and has a sprocket at its end. The fixed shaft is located inside the auger propulsion shaft and has a bevel gear on it. The end of the second stirring shaft is inserted into the auger propulsion shaft and is rotatably connected. The second stirring shaft has a bevel gear that meshes with the bevel gear on the fixed shaft. The third fixed frame is fixedly connected to both ends of the fixed shaft. The fifth motor is fixed to the side of the mixing chamber. The fifth motor shaft has a sprocket and is connected to the sprocket on the auger propulsion shaft via a chain.

[0022] A method for using an integrated treatment device for the reuse of soft soil roadbed backfill material;

[0023] 1) Feeding: First, the device is towed to the work point, i.e. the soft soil subgrade construction point, by an external tractor. Then, the excavated soft soil and mixed stone mixture is conveyed into the feed inlet and tank for initial crushing by a conveying device.

[0024] 2) Crushing of stones in the mixture: The crushing mechanism is used to crush the stones in the soft soil to meet the mixing conditions of the pre-curing agent, including the mixing ratio, so that the curing can meet or satisfy the construction requirements; during this process, the speed of the second motor is set at 60-75 r / min; the soft soil and the stones mixed in are dispersed to the perimeter through the rotating distribution plate, and then the eccentric wheel is used to control and push one side of the crushing plate close to the inner wall of the tank to generate extrusion pressure to crush the stones. On the opposite side, the stones fall into the gap created by the separation of the other side away from the inner wall of the tank. The fallen stones meet the requirements of the mixed curing agent.

[0025] 3) The mixing mechanism performs preliminary mixing of the soil, gravel, and solidifying agent:

[0026] First, the soil and stone flow along the first guide plate and the second guide plate to both sides of the first box body side wall. The sixth motor drives the first mixing shaft to rotate, and the speed of the sixth motor is set to 80-100 r / min. The first mixing shaft rotates in the opposite direction through the meshing of the first gear. The water intake of the nozzle can be controlled according to the actual construction conditions.

[0027] Secondly, the curing agent inside the box consisting of the U-shaped shell and the bottom plate is discharged and comes into contact with the soil and gravel along the third guide plate at the first mixing shaft; the first mixing shaft realizes the mixing of the two.

[0028] Secondly, the rotation of the first motor controls the rotation of the first support block, the second support block, and the third support block, which in turn pushes the adjusting shaft, thereby enabling the second sealing plate to slide up and down. This allows control over the amount of curing agent added, ensuring compliance with the mixing standards of soil and curing agent. Furthermore, the first electric actuator drives the second and third support blocks to move up and down in real time, creating a height difference with the first support block. This, in turn, allows the first spring to press down on the second sealing plate, thereby controlling the height of the second sealing plate and the amount of curing agent added in real time.

[0029] 4) The mixing unit further mixes the soil, gravel, and solidifying agent:

[0030] The fifth motor drives the auger propulsion shaft to rotate in conjunction with the auger blades, which first realizes the propulsion and transmission of the mixture. During this process, the rotation of the second stirring shaft is realized through the fixed shaft and the bevel gears that cooperate with each other, so as to achieve the second stirring during the transmission and propulsion of the mixture to make it fully mixed.

[0031] 5) The propulsion mechanism assists in the propulsion and mixing of soil and solidifying agent mixture: After being propelled to one end of the mixing chamber by an auger, the soil solidifying agent mixture enters the inclined buffer chamber and flows along the inclined direction. Initially, due to the small inclination angle, the flow rate is slow and accumulation will occur. Therefore, the rotation of the first and second mixing fan plates in the propulsion mechanism accelerates its flow and accompanies the mixing. The fourth motor drives the first and second mixing fan plates to rotate, transferring the accumulated mixture to the other side and continuously pushing it down.

[0032] Furthermore, the third motor drives the adjusting shaft to rotate, causing the arc arm to push the adjusting block and the control plate to slide, so that the first and second through holes gradually overlap. The amount of curing agent added is controlled according to the overlap range. It is determined whether curing agent needs to be added again based on the actual mixing situation of the mixture here. If curing agent is added again here, the first and second stirring fan plates can take into account the mixing function.

[0033] 6) Buffering and Discharge: The first and second control blocks in the control mechanism are controlled by the second and third electric actuators to achieve the closing or opening of the two, thereby blocking and buffering the mixture of soil, gravel, and solidifier. When there is enough buffered mixture between the control mechanism and the propulsion mechanism, the first control block moves upward and the second control block moves downward to control the spacing. With the help of the gravity of the buffered mixture, the propulsion mechanism can be used to make the buffered mixture fall quickly as a whole by its own gravity in the first moment when the first control block is opened. Compared with the mixture falling slowly along the inclined buffer bin, the method of using the control mechanism to accumulate the mixture and causing a gate rush when the first control block is opened can quickly pour the mixture to the bottom of the buffer bin, avoiding the disadvantage of the mixture accumulating along the way when the flow is slow.

[0034] 7) The sludge is pumped and transported to the construction site for backfilling via pipeline.

[0035] The advantages of this invention compared to existing technologies are as follows:

[0036] 1) This invention enables the reprocessing of excavated building materials and their backfilling in foundation pits, achieving the recycling of excavated building materials. During the processing, the crushing mechanism breaks down the gravel mixed with the soil, ensuring that the crushed gravel particles are fully mixed with the soft soil and the solidifying agent. Then, the mixing and stirring mechanisms perform initial and secondary mixing and stirring of the soft soil and the solidifying agent, respectively, to achieve thorough mixing and improve the coagulation effect. The uniformly mixed material is then pumped by a sludge pump to backfill the foundation pit, which not only solves the problem of subsequent reprocessing of excavated building materials but also improves the support strength of the backfill material compared to directly backfilling with soil.

[0037] This invention includes a crushing mechanism. A second motor drives the distribution disc and the crushing disc to rotate. Soft soil and mixed stones are dispersed and sprinkled around the perimeter through the rotating distribution disc. Then, an eccentric wheel controls and pushes one side of the crushing disc close to the inner wall of the tank to generate extrusion pressure to crush the stones. On the opposite side, stones fall through the gap created by the distance from the inner wall of the tank. The fallen stones meet the requirements for mixing with the curing agent. This crushing process can break larger stones, which facilitates mixing with the curing agent, making it easier for the soil, stones, and curing agent to solidify and solidify.

[0038] 2) The mixing mechanism is equipped with an auger propulsion shaft and pre-made auger blades. The mixture is transported by rotating the auger propulsion shaft. During this process, the rotation of the second mixing shaft is achieved by a fixed shaft and a bevel gear that cooperates with each other, so as to achieve re-mixing during the mixing and transport process to ensure thorough mixing and avoid the drawback of only transporting without mixing.

[0039] 3) The mixing mechanism is equipped with a first motor. The rotation of the first motor controls the rotation of the first support block, the second support block, and the third support block, which pushes the adjusting shaft, thereby realizing the up-and-down sliding of the second sealing plate. This allows control over the amount of curing agent added, ensuring that the amount added meets the mixing standards of soil and curing agent. Furthermore, the first electric actuator drives the real-time up-and-down movement of the second and third support blocks, creating a height difference with the first support block. This, in turn, uses the first spring to press down on the second sealing plate, thereby controlling the height of the second sealing plate and the real-time control of the amount of curing agent added, meeting the requirements for curing agent addition.

[0040] 4) The propulsion mechanism and control mechanism work together to control the propulsion of the mixture. The first and second control blocks in the control mechanism are controlled by the second and third electric actuators to achieve the closing or opening of the two, thereby blocking and buffering the mixture of soil, gravel, and solidifier. When there is enough mixture buffer between the control mechanism and the propulsion mechanism, the first control block moves upward and the second control block moves downward to control the spacing. With the help of the gravity of the buffered mixture, the propulsion mechanism can work together to make the buffered mixture fall quickly as a whole when the first control block is opened. Compared with the mixture falling slowly along the inclined buffer bin, the method of using the control mechanism to accumulate the mixture and create a gate opening when the first control block is opened can quickly pour the mixture to the bottom of the buffer bin, avoiding the disadvantage of the mixture accumulating along the way when the flow is slow.

[0041] Furthermore, the first and second mixing plates rotate in the same direction to relay the mixing of the mixture after it has been discharged again from the second box. This relay mixing of the surface layer of the mixture with added curing agent to the bottom layer of the mixture achieves the re-mixing of the upper and lower layers of the mixture, and at the same time achieves the effect of conveying and promoting the mixture. Attached Figure Description

[0042] Appendix Figure 1 This is a schematic diagram of the integrated treatment device for the reuse of soft soil roadbed backfill material according to the present invention. Figure 1 ;

[0043] Appendix Figure 2 This is a schematic diagram of the integrated treatment device for the reuse of soft soil roadbed backfill material according to the present invention. Figure 2 ;

[0044] Appendix Figure 3 This is a schematic diagram of the crushing mechanism. Figure 1 ;

[0045] Appendix Figure 4 This is a schematic diagram of the crushing mechanism. Figure 2 ;

[0046] Appendix Figure 5 This is a schematic diagram of the crushing mechanism. Figure 3 ;

[0047] Appendix Figure 6 This is a schematic diagram of the mixing mechanism. Figure 1 ;

[0048] Appendix Figure 7 This is a schematic diagram of the mixing mechanism. Figure 2 ;

[0049] Appendix Figure 8 This is a schematic diagram of the mixing mechanism. Figure 3 ;

[0050] Appendix Figure 9 This is a schematic diagram of the mixing mechanism. Figure 4 ;

[0051] Appendix Figure 10 This is a structural diagram of the mixing chamber. Figure 1 ;

[0052] Appendix Figure 11 This is a structural diagram of the mixing chamber. Figure 2 ;

[0053] Appendix Figure 12 This is a structural diagram of the mixing chamber. Figure 3 ;

[0054] Appendix Figure 13 This is a schematic diagram of the stirring mechanism. Figure 1 ;

[0055] Appendix Figure 14 This is a schematic diagram of the stirring mechanism. Figure 2 ;

[0056] Appendix Figure 15 This is a schematic diagram of the stirring mechanism. Figure 3

[0057] Appendix Figure 16 This is a structural diagram of the control and propulsion mechanisms;

[0058] Appendix Figure 17 Schematic diagram of the propulsion mechanism;

[0059] In the diagram: 1. Bearing frame; 11. First support; 12. Support shaft; 13. Second support; 14. Traction arm;

[0060] 2. Mixing chamber; 21. Buffer chamber; 211. Sludge pump; 212. Piping; 22. Mixing chamber;

[0061] 3. Mixing mechanism; 31. First housing; 301. Feed pipe; 311. First guide plate; 312. Second guide plate; 32. U-shaped shell; 321. First sealing plate; 322. First spring; 323. Second sealing plate; 324. Adjusting shaft; 325. Ball; 33. Nozzle; 34. First stirring shaft; 341. Sixth motor; 342. First gear; 35. Base plate; 351. Third guide plate; 36. Protective shell; 37. First motor; 3701. Main shaft; 3702. Through groove; 371. First support block; 372. First connecting arm; 373. First electric push rod; 374. Second support block; 3741. Partition plate; 3742. Second connecting arm; 375. Third support block; 376. Second spring; 38. Water tank;

[0062] 4. Crushing mechanism; 41. Feed inlet; 42. Tank body; 43. Distribution plate; 44. Support frame; 45. Crushing disc; 451. Protrusion; 452. Adjustment hole; 46. Second motor; 461. Eccentric wheel;

[0063] 5. Control mechanism; 51. First fixed frame; 52. First guide shaft; 53. First control block; 54. Second electric actuator; 55. Second control block; 56. Second fixed frame; 57. Third electric actuator; 58. Second guide shaft;

[0064] 6. Propulsion mechanism; 61. Second housing; 611. Limiting plate; 612. Third spring; 613. First through hole; 62. Third motor; 63. First stirring fan plate; 631. First rotating shaft; 64. Adjusting shaft; 641. Arc arm; 65. Control plate; 651. Second through hole; 652. Adjusting block; 66. Fourth motor; 661. Drive shaft; 67. Second stirring fan plate; 671. Second rotating shaft; 68. Mounting box;

[0065] 7. Stirring mechanism; 71. Fifth motor; 72. Screwdriver propulsion shaft; 721. Second gear; 73. Second stirring shaft; 74. Fixed shaft; 75. Third fixed frame. Detailed Implementation

[0066] To facilitate understanding by those skilled in the art, the following is a detailed explanation in conjunction with the appendix. Figure 1-17 The technical solution of the present invention will be further described in detail below.

[0067] An integrated treatment device for the reuse of soft soil roadbed backfill includes a support frame 1 and a mixing chamber 2, a control mechanism 5, and a propulsion mechanism 6 on the support frame 1. One end of the mixing chamber 2 is equipped with a mixing mechanism 3, and the mixing mechanism 3 is equipped with a crushing mechanism 4. The propulsion mechanism 6 is located at the other end of the mixing chamber 2. The control mechanism 5 is located between the propulsion mechanism 6 and the mixing mechanism 3. The mixing chamber 2 is equipped with a stirring mechanism 7. The soft soil first enters the crushing mechanism 4 to crush the large stones mixed in it, then enters the mixing mechanism 3 to add a solidifying agent for preliminary mixing, then enters the stirring mechanism 7 for deep mixing, and finally enters the propulsion mechanism 6 for secondary feeding and mixing.

[0068] The support frame 1 includes a first support 11 and a second support 13. One end of the first support 11 is provided with a support shaft 12, which is inserted into the second support 13. The first support 11 can slide along the support shaft 12 to adjust the length of the support frame 1 to adapt to the usage requirements of the construction site. One end of the support frame 1 is provided with a traction arm 14 for connecting an external traction vehicle.

[0069] The mixing chamber 2 is equipped with a buffer chamber 21 and a mixing chamber 22. There are a pair of mixing chambers 22, which are respectively located on both sides of the buffer chamber 21. The bottom of the buffer chamber 21 is inclined, and a sludge pump 211 is provided at one end of the buffer chamber 21.

[0070] The crushing mechanism 4 includes a tank 42, with a feed inlet 41 at the top. Inside the tank 42 are a distribution plate 43, a support frame 44, a crushing disc 45, and a second motor 46. The support frame 44 is fixedly connected to the inner wall of the tank 42, and the second motor 46 is fixed on the support frame 44. An eccentric wheel 461 is provided on the output shaft of the second motor 46. The crushing disc 45 is disposed on the support frame 44, with protrusions 451 around its periphery and an adjustment hole at its center. 452, an eccentric wheel 461 is located in the adjustment hole 452, and a material distribution plate 43 is placed on the crushing plate 45. The material distribution plate 43 is fixedly connected to the end of the output shaft of the second motor 46. The second motor 46 drives the material distribution plate 43 and the crushing plate 45 to rotate. The crushing plate 45 is driven by the eccentric wheel 461 to make its circumference approach the inner wall of the tank 42 one after another and crush the stones between the crushing plate 45 and the inner wall of the tank 42. The rotation of the material distribution plate 43 disperses the soil and the mixed stones.

[0071] The mixing mechanism 3 includes a first housing 31, the top of which is connected to a tank 42. A first guide plate 311 is provided on the top of the first housing 31, a second guide plate 312 is provided below the first guide plate 311, a U-shaped shell 32 is provided below the second guide plate 312, a bottom plate 35 is provided below the U-shaped shell, and a third guide plate 351 is provided on both sides of the bottom plate 35. The first guide plate 311, the second guide plate 312, the third guide plate 351, the U-shaped shell 32, and the bottom plate 35 are fixedly connected to the inner wall of the first housing 31 at both ends. A first motor 37 and a protective shell 36 are provided on one side of the bottom plate 35. The protective shell 36 is fixedly connected to the bottom plate 35, and the first motor 37 is fixed on the protective shell 36.

[0072] The inner walls of both sides of the U-shaped shell 32 are provided with a first sealing plate 321 and a second sealing plate 323 that are interlocked. The first sealing plate 321 has a first spring 322 inside, and the second sealing plate 323 has an adjusting shaft 324 on one side. The adjusting shaft 324 is slidably connected to the bottom plate 35, and the end of the adjusting shaft 324 has a ball 325. The first spring 322 pushes the second sealing plate 323 down to close the opening between the U-shaped shell 32 and the bottom plate 35. The U-shaped shell 32, the second sealing plate 323, and the bottom plate 35 constitute a box for holding the curing agent. The first box 31 has a feed pipe 301 on one side for adding the curing agent.

[0073] The output shaft of the first motor 37 is connected to the main shaft 3701, which is housed within the protective shell 36 and rotatably connected to it. The main shaft 3701 is hollow and has a through groove 3702. A first electric actuator 373 is provided in the hollow part inside the main shaft 3701. The main shaft 3701 has evenly distributed first connecting arms 372, and the ends of the first connecting arms 372 are provided with first support blocks 371. A second support block 3 is provided between adjacent first support blocks 371. 74. A second connecting arm 3742 is provided on the second support block 374. The second connecting arm 3742 is located in the through groove 3702 and is fixedly connected to the top shaft of the first electric push rod 373. The second support block 374 is hollow inside and is provided with a partition plate 3741. A third support block 375 is provided on both sides of the second support block 374. The third support block 375 is hollow and is inserted into the second support block 374. A second spring 376 is provided inside the third support block 375. The second spring 376 touches the partition plate 3741.

[0074] A water tank 38 is provided on one side of the first box 31, and spray pipes 33 are provided on both sides of the second guide plate 312. The spray pipes 33 are connected to the water tank 38. A set of first stirring shafts 34 is provided between the third guide plate 351 and the inner wall of the first box 31. The end of the first stirring shaft 34 is provided with a first gear 342 and they mesh with each other. The end of one set of first stirring shafts 34 is provided with a sixth motor 341 connected to it. The sixth motor 341 is fixed on the side wall of the first box 31 by a fixing seat.

[0075] The control mechanism 5 includes a first fixed frame 51, a first guide shaft 52, a first control block 53, a second electric push rod 54, a second control block 55, a second fixed frame 56, a third electric push rod 57, and a second guide shaft 58. The first fixed frame 51 is fixed to the top of the mixing chamber 2, the second fixed frame 56 is fixed to the bottom of the mixing chamber 2, the first control block 53 is located below the first fixed frame 51, the first control block 53 is provided with the first guide shaft 52 and is slidably connected to the first fixed frame 51, the second electric push rod 54 is fixed to the first fixed frame 51, and the top shaft of the second electric push rod 54 passes through the first fixed frame 51 and is fixedly connected to the first control block 53. The second control block 55 is located above the second fixed frame 56, the second control block 55 is provided with the second guide shaft 58 and is slidably connected to the second fixed frame 56, the third electric push rod 57 is fixed to the second fixed frame 56, and the top shaft of the third electric push rod 57 passes through the second fixed frame 56 and is fixedly connected to the second control block 55.

[0076] The propulsion mechanism 6 includes a second housing 61 for holding a curing agent. The second housing 61 has a limiting plate 611 and a control plate 65 on its side. The bottom plate of the second housing 61 has a first through hole 613. The control plate 65 is inserted into the bottom of the second housing 61 and slidably connected to it. The control plate 65 has a second through hole 651. A third spring 612 is provided between the control plate 65 and the limiting plate 611. The bottom of the control plate 65 has an adjusting block 652. The bottom of the second housing has a through groove for the sliding of the adjusting block.

[0077] The second housing 61 is also equipped with a pair of adjusting shafts 64. The bottom end of the adjusting shafts 64 is provided with an arc-shaped arm 641 and a corresponding adjusting block 652. The adjusting shafts 64 are connected to each other by a sprocket and a chain. The top of the second housing 61 is provided with a third motor 62 and connected to the adjusting shafts. The third motor drives the adjusting shafts to rotate, which causes the arc-shaped arm to push the adjusting block and the control plate, thereby making the first through hole and the second through hole coincide for material feeding.

[0078] The second housing 61 has a first stirring fan plate 63 and a second stirring fan plate 67 at its lower end, and both ends of the two are rotatably connected to the side wall of the buffer chamber 21. The first stirring fan plate and the second stirring fan plate are located on one side of the second housing, so that the mixture passes through the discharge port of the second housing and then through the first and second fan plates. The first stirring fan plate 63 has a mounting box 68 and a fourth motor 66 on one side. The first stirring fan plate 63 has a first rotating shaft 631 at one end and is rotatably connected to the mounting box 68. The second stirring fan plate 67 has a second rotating shaft 671 at one end and is rotatably connected to the mounting box 68. The second rotating shaft 671 has a sprocket and a bevel gear. The first rotating shaft 631 has a sprocket and is connected to the sprocket on the first rotating shaft 631 by a chain. The fourth motor 66 is located at the bottom of the mixing chamber 2. The shaft end of the fourth motor 66 has a drive shaft 661 and is located in the mounting box 68. The drive shaft 661 has a bevel gear and meshes with the bevel gear on the second rotating shaft 671.

[0079] The stirring mechanism 7 includes a fifth motor 71, an auger propulsion shaft 72, a second stirring shaft 73, a fixed shaft 74, and a third fixed frame 75. The auger propulsion shaft 72 is located inside the stirring chamber 22 and is rotatably connected to both ends of the stirring chamber 22. The third fixed frame 75 is fixed to both ends of the stirring chamber 22. The auger propulsion shaft 72 is hollow and has a sprocket at its end. The fixed shaft 74 is located inside the auger propulsion shaft 72 and has a bevel gear on it. The end of the second stirring shaft 73 is inserted into the auger propulsion shaft 72 and is rotatably connected to it. The second stirring shaft 73 has a bevel gear that meshes with the bevel gear on the fixed shaft 74. The third fixed frame 75 is fixedly connected to both ends of the fixed shaft 74. The fifth motor 71 is fixed to the side of the mixing chamber 2. The shaft of the fifth motor 71 has a sprocket and is connected to the sprocket on the auger propulsion shaft 72 via a chain.

[0080] A method for using an integrated treatment device for the reuse of soft soil roadbed backfill material;

[0081] 1) Feeding: First, the device is towed to the work point, i.e. the soft soil subgrade construction point, by an external tractor. Then, the excavated soft soil and mixed stone material are conveyed into the feed inlet 41 and tank 42 by a conveying device for preliminary crushing.

[0082] 2) Crushing of stones in the mixture: The crushing mechanism 4 is used to crush the stones in the soft soil to meet the mixing conditions of the pre-curing agent, including the mixing ratio, so that the curing can meet or satisfy the construction requirements; during this process, the speed of the second motor 46 is set at 60-75 r / min; the soft soil and the stones mixed in are dispersed to the periphery through the rotating distribution plate 43, and then the eccentric wheel 461 is used to control and push one side of the crushing plate 45 close to the inner wall of the tank 42 to generate extrusion pressure to crush the stones, while the stones fall from the gap created on the other side away from the inner wall of the tank 42. The fallen stones meet the requirements of the mixed curing agent.

[0083] 3) The mixing mechanism performs preliminary mixing of soil, gravel, and solidifying agent.

[0084] First, the soil and stone flow along the first guide plate 311 and the second guide plate 312 to both sides of the side wall of the first box 31. The sixth motor 341 drives the first stirring shaft 34 to rotate, and the speed of the sixth motor 341 is set to 80-100 r / min. The first stirring shaft 34 rotates in the opposite direction through the meshing of the first gear 342. The water intake of the nozzle can be controlled according to the actual construction conditions.

[0085] Secondly, the curing agent inside the box composed of the U-shaped shell 32 and the bottom plate 35 is discharged and comes into contact with the soil and gravel at the first stirring shaft 34 along the third guide plate 351; the first stirring shaft 34 realizes the mixing of the two.

[0086] Furthermore, the rotation of the first motor 37 controls the rotation of the first support block 371, the second support block 374, and the third support block 375, which in turn pushes the adjusting shaft 324, thereby enabling the second sealing plate 323 to slide up and down. This allows control over the amount of curing agent added, ensuring compliance with the mixing standards for soil and curing agent. Further, the first electric actuator 373 drives the second support block 374 and the third support block 375 to move up and down in real time, creating a height difference with the first support block 371. This, in turn, allows the first spring 322 to press down on the second sealing plate 323, achieving real-time control over the height of the second sealing plate 323 and the amount of curing agent added.

[0087] 4) The mixing unit further mixes the soil, gravel, and solidifying agent:

[0088] The fifth motor 71 drives the auger propulsion shaft 72 to rotate in conjunction with the auger blades, which first realizes the propulsion and transmission of the mixture. During this process, the rotation of the second stirring shaft 73 is realized through the fixed shaft 74 and the bevel gears that cooperate with each other, so as to achieve the re-stirring during the transmission and propulsion process of the mixture and make it fully mixed.

[0089] 5) The propulsion mechanism assists in the propulsion and mixing of soil and solidifying agent mixture: After the soil solidifying agent mixture is propelled to one end of the mixing chamber 2 by the auger, it enters the inclined buffer chamber 21 and flows along the inclined direction. Initially, due to the small inclination angle, the flow rate is slow and accumulation will occur. Therefore, the rotation of the first stirring fan plate 63 and the second stirring fan plate 67 in the propulsion mechanism 6 accelerates its flow and accompanies the mixing. The fourth motor 66 drives the first stirring fan plate 63 and the second stirring fan plate 67 to rotate, transferring the accumulated mixture to the other side and continuously pushing it down.

[0090] Furthermore, the third motor 62 drives the adjusting shaft 64 to rotate, causing the arc arm 641 to push the adjusting block 652 and the control plate 65 to slide, so that the first through hole 613 and the second through hole 651 gradually overlap. The amount of curing agent added is controlled according to the overlap range. It is determined whether curing agent needs to be added again according to the actual mixing situation of the mixture here. If curing agent is added again here, the first stirring fan plate 63 and the second stirring fan plate 67 can take into account the mixing function.

[0091] 6) Buffering and Discharge: The first control block 53 and the second control block 55 in the control mechanism 5 are controlled by the second electric push rod 54 and the third electric push rod 57 to achieve the closing or opening of the two, thereby blocking and buffering the mixture of soil, gravel and solidifying agent. When there is enough buffered mixture between the control mechanism 5 and the propulsion mechanism 6, the first control block 53 moves upward to reset and the second control block 55 moves downward to reset, controlling the spacing. With the help of the gravity of the buffered mixture, the propulsion mechanism 6 can be used to make the buffered mixture fall quickly as a whole by its own gravity in the first moment when the first control block 53 is opened. Compared with the method of the mixture falling slowly along the inclined buffer bin, the method of using the control mechanism 5 to accumulate the mixture and cause the gate to be opened when the first control block 53 is opened can quickly pour the mixture to the bottom of the buffer bin 21, avoiding the disadvantage of the mixture accumulating along the way when the mixture flows slowly.

[0092] 7) The sludge is pumped out by a sludge pump and transported to the construction site for backfilling via pipeline 212.

[0093] In the description of this invention, unless otherwise stated, "a plurality of" means two or more; the terms "upper," "lower," "left," "right," "inner," "outer," "front end," "rear end," "head," "tail," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the invention. Furthermore, the terms "first," "second," "third," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0094] In summary, the electronic or electrical components, including but not limited to an integrated processing device for the reuse of soft soil roadbed backfill, are components in the prior art, obtained through private customization or purchase. The electrical connections between the components are conventional circuit connections or electrical connections in the prior art, and are not within the scope of protection of this invention.

[0095] The above description is merely an example and illustration of the structure of the present invention. Those skilled in the art can make various modifications or additions to the specific embodiments described or use similar methods to replace them, as long as they do not deviate from the structure of the invention or exceed the scope defined in the claims, they should all fall within the protection scope of the present invention.

Claims

1. An integrated treatment device for the reuse of soft soil roadbed backfill material, comprising a support frame and a mixing chamber, a control mechanism, and a propulsion mechanism on the support frame; characterized in that... The mixing chamber is equipped with a mixing mechanism at one end, a crushing mechanism on the mixing mechanism, a propulsion mechanism at the other end, and a control mechanism between the propulsion mechanism and the mixing mechanism. The mixing chamber is equipped with a stirring mechanism. The soft soil first enters the crushing mechanism to crush the large stones mixed in, then enters the mixing mechanism to add a solidifying agent for preliminary mixing, then enters the stirring mechanism for deep mixing, and finally enters the propulsion mechanism for secondary feeding and mixing. The support frame includes a first support and a second support. One end of the first support is provided with a support shaft, which is inserted into the second support. The first support can slide along the support shaft to adjust the length of the support frame to adapt to the usage requirements of the construction site. One end of the support frame is provided with a traction arm for connecting an external tractor. The mixing chamber is provided with a buffer chamber and a mixing chamber. There is a pair of mixing chambers, which are respectively located on both sides of the buffer chamber. The bottom of the buffer chamber is inclined. One end of the buffer chamber is provided with a sludge pump. The crushing mechanism includes a tank body with a feed inlet at the top. Inside the tank body are a distribution plate, a support frame, a crushing disc, and a second motor. The support frame is fixedly connected to the inner wall of the tank body, and the second motor is fixed on the support frame. An eccentric wheel is provided on the output shaft of the second motor. The crushing disc is located on the support frame, with protrusions around its perimeter and an adjustment hole at its center. The eccentric wheel is located inside the adjustment hole. The distribution plate is placed on the crushing disc and is fixedly connected to the end of the output shaft of the second motor.

2. The integrated treatment device for the reuse of soft soil roadbed backfill material according to claim 1, characterized in that... The mixing mechanism includes a first housing, the top of which is connected to a tank. A first guide plate is provided on the top of the first housing, a second guide plate is provided below the first guide plate, a U-shaped shell is provided below the second guide plate, a bottom plate is provided below the U-shaped shell, and third guide plates are provided on both sides of the bottom plate. The first guide plate, second guide plate, third guide plate, U-shaped shell, and bottom plate are fixedly connected to the inner wall of the first housing at both ends. A first motor and a protective shell are provided on one side of the bottom plate. The protective shell is fixedly connected to the bottom plate, and the first motor is fixed on the protective shell. The inner walls of both sides of the U-shaped shell are provided with a first sealing plate and a second sealing plate that are interlocked with each other. The first sealing plate is provided with a first spring inside, and the second sealing plate is provided with an adjusting shaft on one side. The adjusting shaft is slidably connected to the bottom plate, and the end of the adjusting shaft is provided with a ball. The first spring pushes the second sealing plate to slide down and close the opening between the U-shaped shell and the bottom plate. The U-shaped shell, the second sealing plate, and the bottom plate constitute a box for holding the curing agent. The first box is provided with a feed pipe on one side for adding the curing agent. The first motor output shaft is connected to the main shaft, which is housed in the protective shell and rotates with it. The main shaft is hollow and has a through groove. A first electric push rod is located in the hollow part of the main shaft. A first connecting arm is evenly distributed on the main shaft, and a first support block is located at the end of the first connecting arm. A second support block is located between adjacent first support blocks, and a second connecting arm is located on the second support block. The second connecting arm is located in the through groove and is fixedly connected to the top shaft of the first electric push rod. The second support block is hollow and has a partition plate. A third support block is located on both sides of the second support block. The third support block is hollow and inserts into the second support block. A second spring is located inside the third support block, and the second spring touches the partition plate.

3. The integrated treatment device for the reuse of soft soil roadbed backfill material according to claim 2, characterized in that... A water tank is provided on one side of the first box body, and spray pipes are provided on both sides of the second guide plate. The spray pipes are connected to the water tank. A set of first stirring shafts is provided between the third guide plate and the inner wall of the first box body. The end of the first stirring shaft is provided with a first gear and they mesh with each other. One set of first stirring shafts is provided with a sixth motor connected to the end of the first stirring shaft. The sixth motor is fixed to the side wall of the first box body by a fixing seat.

4. The integrated treatment device for the reuse of soft soil roadbed backfill material according to claim 3, characterized in that... The control mechanism includes a first fixed frame, a first guide shaft, a first control block, a second electric actuator, a second control block, a second fixed frame, a third electric actuator, and a second guide shaft. The first fixed frame is fixed to the top of the mixing chamber, the second fixed frame is fixed to the bottom of the mixing chamber, the first control block is located below the first fixed frame, the first control block has a first guide shaft and is slidably connected to the first fixed frame, the second electric actuator is fixed to the first fixed frame, and the top shaft of the second electric actuator passes through the first fixed frame and is fixedly connected to the first control block. The second control block is located above the second fixed frame, the second control block has a second guide shaft and is slidably connected to the second fixed frame, the third electric actuator is fixed to the second fixed frame, and the top shaft of the third electric actuator passes through the second fixed frame and is fixedly connected to the second control block.

5. The integrated treatment device for the reuse of soft soil roadbed backfill material according to claim 4, characterized in that... The propulsion mechanism includes a second housing for holding the curing agent. The second housing has a limiting plate and a control plate on its side. A first through hole is provided on the bottom plate of the second housing. The control plate is inserted into the bottom of the second housing and slidably connected to it. A second through hole is provided on the control plate. A third spring is provided between the control plate and the limiting plate. An adjusting block is provided at the bottom of the control plate. A through groove is provided at the bottom of the second housing for the sliding of the adjusting block. A pair of adjusting shafts are also provided inside the second housing. An arc-shaped arm is provided at the bottom of each adjusting shaft and corresponds to the adjusting block. The adjusting shafts are connected by a sprocket and a chain. A third motor is provided at the top of the second housing and connected to the adjusting shafts. The third motor drives the adjusting shafts to rotate, causing the arc-shaped arm to push the adjusting block and the control plate, thereby aligning the first and second through holes for material discharge. The second chamber has a first stirring fan and a second stirring fan at its lower part, and both ends of the two are rotatably connected to the side wall of the buffer chamber. The first stirring fan and the second stirring fan are located on one side of the second chamber, so that the mixture passes through the discharge port of the second chamber and then through the first and second stirring fans. A mounting box and a fourth motor are located on one side of the first stirring fan. One end of the first stirring fan is provided with a first rotating shaft and is rotatably connected to the mounting box. One end of the second stirring fan is provided with a second rotating shaft and is rotatably connected to the mounting box. The second rotating shaft is provided with a sprocket and a bevel gear. The first rotating shaft is provided with a sprocket and is connected to the sprocket on the first rotating shaft by a chain. The fourth motor is located at the bottom of the mixing chamber. The shaft end of the fourth motor is provided with a drive shaft and is located in the mounting box. The drive shaft is provided with a bevel gear and meshes with the bevel gear on the second rotating shaft.

6. The integrated treatment device for the reuse of soft soil subgrade backfill material according to claim 5, characterized in that... The stirring mechanism includes a fifth motor, an auger propulsion shaft, a second stirring shaft, a fixed shaft, and a third fixed frame. The auger propulsion shaft is located inside the stirring chamber and is rotatably connected to both ends of the stirring chamber. The third fixed frame is fixed to both ends of the stirring chamber. The auger propulsion shaft is hollow and has a sprocket at its end. The fixed shaft is located inside the auger propulsion shaft and has a bevel gear on it. The end of the second stirring shaft is inserted into the auger propulsion shaft and is rotatably connected. The second stirring shaft has a bevel gear that meshes with the bevel gear on the fixed shaft. The third fixed frame is fixedly connected to both ends of the fixed shaft. The fifth motor is fixed to the side of the mixing chamber. The fifth motor shaft has a sprocket and is connected to the sprocket on the auger propulsion shaft via a chain.

7. The integrated treatment device for the reuse of soft soil subgrade backfill material according to claim 6, characterized in that... A method for using an integrated treatment device for the reuse of soft soil roadbed backfill material: 1) Feeding: First, the device is towed to the work point, i.e. the soft soil subgrade construction point, by an external tractor. Then, the excavated soft soil and mixed stone material are conveyed into the feed inlet and tank for preliminary crushing by a conveying device. 2) Crushing of stones in the mixture: The crushing mechanism is used to crush the stones in the soft soil to meet the mixing conditions of the pre-curing agent, including the mixing ratio, so that the curing can meet or satisfy the construction requirements; during this process, the speed of the second motor is set at 60-75 r / min; the soft soil and the stones mixed in are dispersed to the perimeter through the rotating distribution plate, and then the eccentric wheel is used to control and push one side of the crushing plate close to the inner wall of the tank to generate extrusion pressure to crush the stones. On the opposite side, the stones fall into the gap created by the separation of the other side away from the inner wall of the tank. The fallen stones meet the requirements of the mixed curing agent. 3) The mixing mechanism performs preliminary mixing of the soil, gravel, and solidifying agent: First, the soil and stone flow along the first guide plate and the second guide plate to both sides of the first box body side wall. The sixth motor drives the first stirring shaft to rotate, and the speed of the sixth motor is set to 80-100 r / min. The first stirring shaft rotates in the opposite direction through the meshing of the first gear. The water intake of the nozzle can be controlled according to the actual construction conditions; Secondly, the curing agent inside the box consisting of the U-shaped shell and the bottom plate is discharged and comes into contact with the soil and gravel along the third guide plate at the first mixing shaft; the first mixing shaft realizes the mixing of the two. Secondly, the rotation of the first motor controls the rotation of the first support block, the second support block, and the third support block, which in turn pushes the adjusting shaft, thereby enabling the second sealing plate to slide up and down. This allows control over the amount of curing agent added, ensuring compliance with the mixing standards of soil and curing agent. Furthermore, the first electric actuator drives the second and third support blocks to move up and down in real time, creating a height difference with the first support block. This, in turn, allows the first spring to press down on the second sealing plate, thereby controlling the height of the second sealing plate and the amount of curing agent added in real time. 4) The mixing unit further mixes the soil, gravel, and solidifying agent: The fifth motor drives the auger propulsion shaft to rotate in conjunction with the auger blades, which first realizes the propulsion and transmission of the mixture. During this process, the rotation of the second stirring shaft is realized through the fixed shaft and the cooperating bevel gears, so as to achieve the second stirring during the transmission and propulsion of the mixture to ensure that it is fully mixed. 5) The propulsion mechanism assists in the propulsion and mixing of soil and solidifying agent mixture: After being propelled to one end of the mixing chamber by an auger, the soil solidifying agent mixture enters the inclined buffer chamber and flows along the inclined direction. Initially, due to the small inclination angle, the flow rate is slow and accumulation will occur. Therefore, the rotation of the first and second mixing fan plates in the propulsion mechanism accelerates its flow and accompanies the mixing. The fourth motor drives the first and second mixing fan plates to rotate, transferring the accumulated mixture to the other side and continuously pushing it down. Furthermore, the third motor drives the adjusting shaft to rotate, causing the arc arm to push the adjusting block and the control plate to slide, so that the first and second through holes gradually overlap. The amount of curing agent added is controlled according to the overlap range. It is determined whether curing agent needs to be added again based on the actual mixing situation of the mixture. If a curing agent is added here again, the first and second mixing blades can both perform the function of mixing. 6) Buffering and Discharge: The first and second control blocks in the control mechanism are controlled by the second and third electric actuators to achieve the closing or opening of the two, thereby blocking and buffering the mixture of soil, gravel, and solidifier. When there is enough buffered mixture between the control mechanism and the propulsion mechanism, the first control block moves upward and the second control block moves downward to control the spacing. With the help of the gravity of the buffered mixture, the propulsion mechanism can be used to make the buffered mixture fall quickly as a whole by its own gravity in the first moment when the first control block is opened. Compared with the mixture falling slowly along the inclined buffer bin, the method of using the control mechanism to accumulate the mixture and causing a gate rush when the first control block is opened can quickly pour the mixture to the bottom of the buffer bin, avoiding the disadvantage of the mixture accumulating along the way when the flow is slow. 7) The sludge is pumped and transported to the construction site for backfilling via pipeline.

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