A shield sludge in-situ solidification and removal integrated system

Abstract

The application discloses a shield slag solidification and desorption integrated system, which comprises an inclined conveying mechanism, a stirring and crushing mechanism connected with the discharging end of the conveying mechanism, a solidification converter connected with the discharging end of the stirring and crushing mechanism, and a medicament supply mechanism connected with the feeding end of the stirring and crushing mechanism; the solidification converter comprises a conveying belt and steam pipes, the lower ends of the steam pipes are inserted into the slag on the conveying belt, vibration mechanisms are connected with the steam pipes, heating mechanisms for providing steam for the steam pipes are arranged on the steam pipes, and condensate water recovery mechanisms are also connected with the steam pipes; the medicament supply mechanism is used for providing additives for solidification reaction of the slag; and the conveying mechanism comprises a conveying pipe, and helical blades are arranged in the conveying pipe in a rotating mode. Compared with the prior art, the application has the advantages of high efficiency in treating the slag, low energy consumption, low cost and high competitiveness.

Description

Technical Field

[0001] This invention relates to the field of shield tunneling spoil treatment technology, and in particular to an integrated system for in-situ solidification and desolvation of shield tunneling spoil. Background Technology

[0002] The slag from subway tunnel boring machines (TBMs) has unique characteristics, exhibiting high moisture content, a certain degree of cohesion, and a large amount of lumpy material. Whether temporarily stockpiled or transported for landfill, dewatering is necessary. Existing dewatering technologies mainly include evaporative dewatering, mechanical dewatering, seepage dewatering, and combined dewatering methods. Evaporative dewatering primarily involves heating the TBM slag with heating equipment, causing the moisture in the slag to evaporate into the air, which is then removed by a vacuum system to achieve rapid separation of moisture from the slag. However, the heating process requires raising the temperature to around 100℃, resulting in high energy consumption and increased dewatering costs. Summary of the Invention

[0003] This invention provides an integrated system for in-situ solidification and dewatering of tunnel boring machine (TBM) slag, which solves the problems of high energy consumption and high cost in current slag evaporation and dewatering treatment.

[0004] This invention provides an in-situ solidification and desoldering system for tunnel boring machine (TBM) slag, comprising an inclined conveying mechanism. The discharge end of the conveying mechanism is connected to a mixing and crushing mechanism, and the discharge end of the mixing and crushing mechanism is connected to a solidification converter. The feed end of the mixing and crushing mechanism is also connected to a reagent supply mechanism. The solidification converter includes a conveyor belt and steam pipes. The lower ends of multiple steam pipes extend into the slag on the conveyor belt. A vibration mechanism and a heating mechanism for supplying steam to the steam pipes are connected to the steam pipes. A condensate recovery mechanism is also connected to the steam pipes. The reagent supply mechanism is used to provide additives for the solidification reaction to the slag. The conveying mechanism includes a conveying pipe, and a spiral blade is rotatably installed inside the conveying pipe.

[0005] Preferably, the steam pipe is a T-shaped pipe, with the two ends of the horizontal pipe of the T-shaped pipe connected to a condensate recovery mechanism and a heating mechanism, respectively, the lower end of the vertical pipe of the T-shaped pipe extending into the slag and close to the conveyor belt, and the vibration mechanism located at the upper end of the T-shaped pipe.

[0006] Preferably, the curing oven is also equipped with a vacuum system, and the heating mechanism is an air-source heating system, with the vacuum system connected to the air-source heating system.

[0007] Preferably, the mixing and crushing mechanism includes a mixing tank, a drive seat is rotatably disposed inside the mixing tank, a mixing shaft and a crushing shaft are rotatably disposed on the drive seat, a stirrer is fixed on the mixing shaft, a crushing blade is fixed on the crushing shaft, and a drive mechanism connected to the drive seat is provided on the outside of the mixing tank.

[0008] Preferably, the crushing blade includes an upper fractal cutter disc and a lower fractal cutter disc, which are arranged vertically and alternately.

[0009] Preferably, the stirrer includes a horizontal plate fixed to the stirring shaft, with a first stirring grid and a second stirring grid fixed at both ends of the horizontal plate, and a third stirring grid fixed between the first stirring grid and the second stirring grid, wherein the first stirring grid and the second stirring grid are both inclined.

[0010] Preferably, a first gear, a second gear, and a third gear are rotatably disposed inside the drive seat. The second gear meshes with the first gear and the third gear respectively. The second gear is fixed to the output shaft of the drive mechanism. The first gear and the third gear are fixed to the stirring shaft and the crushing shaft respectively. The upper end of the drive seat is rotatably connected to the output shaft of the drive mechanism, and the lower end of the drive seat is fixed to the output shaft of the drive mechanism.

[0011] Preferably, the discharge end of the conveying pipe is connected to a negative pressure cylinder, and the bottom of the negative pressure cylinder is provided with a valve plate for opening and closing the discharge port of the negative pressure cylinder. The bottom of the negative pressure cylinder is connected to a jet vacuum device, and the water outlet and water inlet of the jet vacuum device are respectively connected to a water tank through pipes. The water outlet of the jet vacuum device is also connected to a water supply valve on the conveying pipe. The jet vacuum device is used to draw air from the negative pressure cylinder when the valve plate closes the discharge port and to replenish water to the conveying pipe through the water supply valve.

[0012] Preferably, the water supply valve includes: a limit cap, a valve core, a spring, and a valve body. The outlet end of the valve core is slidably connected to the valve body, and the inlet end cooperates with the limit cap to control the opening and closing of the water supply valve. One end of the spring is connected to the valve body, and the other end is connected to the inlet end of the valve core. The outlet end of the valve core is provided with multiple outlet holes.

[0013] Preferably, the pipe connecting the water inlet of the jet vacuum device to the water tank is equipped with a one-way valve, and the jet vacuum device also includes a water pump disposed between the one-way valve and the water tank.

[0014] Compared with existing technologies, the steam pipe in this invention only needs to heat the slag to a temperature sufficient for the solidification reaction, resulting in significantly lower energy consumption than evaporation dehydration, thus reducing dehydration costs and enhancing product competitiveness. Secondly, the use of spiral blades to transport the slag reduces the workload of subsequent dehydration processes, improving slag dehydration efficiency. Thirdly, the mixing, crushing, and chemical dosing of the slag are carried out simultaneously, effectively shortening the processing time and improving efficiency. Fourthly, the steam pipe, vibration mechanism, heating mechanism, and condensate recovery mechanism provide excellent heating for the slag, and the simultaneous internal and external heating by the steam pipe allows for rapid heating, accelerating dehydration. Overall, this invention offers high efficiency, low energy consumption, low cost, and high competitiveness in slag processing. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in this invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of the structure of the present invention;

[0017] Figure 2 This is a top view of the present invention;

[0018] Figure 3 This is a schematic diagram of the curing converter of the present invention;

[0019] Figure 4 This is a schematic diagram of the stirring and crushing mechanism of the present invention;

[0020] Figure 5 This is a top view of the stirrer of the present invention;

[0021] Figure 6 This is a front view of the stirrer of the present invention;

[0022] Figure 7 This is a schematic diagram of the conveying mechanism of the present invention;

[0023] Figure 8 This is a schematic diagram of the water supply valve of the present invention.

[0024] Figure label:

[0025] 1. Conveying mechanism, 2. Mixing and crushing mechanism, 3. Solidification converter, 4. Reagent supply mechanism, 5. Slag pit, 6. Storage pit, 7. Slag, 8. Vacuum system, 11. Conveying pipe, 12. Spiral blade, 13. Negative pressure cylinder, 14. Valve plate, 15. Jet vacuum device, 16. Water tank, 17. Water supply valve, 151. Check valve, 152. Water pump, 171. Limit cap, 172. Valve core, 173. Spring, 174. Valve body, 100. Water outlet, 21. Mixing tank, 2 2. Drive base, 23. Stirring shaft, 24. Crushing shaft, 25. Stirrer, 26. Crushing blade, 27. Drive mechanism, 221. First gear, 222. Second gear, 223. Third gear, 251. Horizontal plate, 252. First stirring grate, 253. Second stirring grate, 254. Third stirring grate, 261. Upper fractal cutter head, 262. Lower fractal cutter head, 31. Conveyor belt, 32. Steam pipe, 33. Vibration mechanism, 34. Heating mechanism, 35. Condensate recovery mechanism. Detailed Implementation

[0026] To make the objectives, technical solutions, and advantages of this invention clearer, the technical solutions of this invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this invention. All other embodiments obtained by those skilled in the art based on the embodiments of this invention without creative effort are within the scope of protection of this invention.

[0027] See attached document Figure 1-3This invention provides an in-situ solidification and desoldering system for tunnel boring machine (TBM) slag, comprising an inclined conveying mechanism 1. The discharge end of the conveying mechanism 1 is connected to a mixing and crushing mechanism 2, and the discharge end of the mixing and crushing mechanism 2 is connected to a solidification converter 3. The feed end of the mixing and crushing mechanism 2 is also connected to a reagent supply mechanism 4. The solidification converter 3 includes a conveyor belt 31 and steam pipes 32. The lower ends of multiple steam pipes 32 extend into the slag 7 above the conveyor belt 31 to heat the slag 7. The steam pipes 32 exposed outside the slag 7 heat the outer surface of the slag 7 by raising the ambient temperature. The steam pipes 32 heat the slag 7 through both internal and external methods, resulting in fast heating speed and good heating effect. A vibration mechanism 33 and a heating mechanism 34 for supplying steam to the steam pipe 32 are connected to the steam pipe 32. During the heating process of the slag 7, the slag 7 is easily stuck to the pipe. Due to the high temperature of the steam pipe 32, the slag 7 is prone to clumping after sticking, which affects the heating effect of the steam pipe 32. Therefore, the vibration mechanism 33 is set to make the steam pipe 32 vibrate continuously, so that the slag 7 adhering to the steam pipe 32 can be quickly removed, which helps to maintain the heating effect of the steam pipe 32. A condensate recovery mechanism 35 is also connected to the steam pipe 32. The condensate recovery mechanism 35 is used to recover the condensate in the steam pipe 32 to avoid affecting the heating effect of the steam pipe 32. The reagent supply mechanism 4 is used to provide additives for the solidification reaction to the slag 7. The conveying mechanism 1 includes a conveying pipe 11. A spiral blade 12 is rotatably installed inside the conveying pipe 11. The spiral blade 12 conveys the slag 7. Compared with the bucket elevator, the slag 7 has a lower moisture content, which reduces the workload of subsequent dewatering treatment and helps to improve the dewatering efficiency of the slag 7. While the slag 7 is being crushed and mixed in the mixing and crushing mechanism 2, additives are added. Then, it is pumped to the solidification converter 3 for dehydration. The mixing, crushing, and additive addition of slag 7 are carried out simultaneously, effectively shortening the processing time and improving its efficiency. This system primarily dehydrates slag 7 through a solidification reaction caused by adding chemicals. However, in winter, the low temperature slows the solidification reaction, resulting in low dehydration efficiency. By adding a steam pipe 32, a vibration mechanism 33, a heating mechanism 34, and a condensate recovery mechanism 35, the slag 7 can achieve better heating, thereby increasing the speed of the solidification reaction and effectively improving its processing efficiency. Compared to evaporation dehydration, which requires heating to around 100℃, this system only requires heating the slag 7 to around 20℃ to meet the solidification reaction temperature, reducing energy consumption, lowering costs, and enhancing product competitiveness.

[0028] In another embodiment of the present invention: the steam pipe 32 is a T-shaped pipe, with the two ends of the horizontal pipe of the T-shaped pipe connected to the condensate recovery mechanism 35 and the heating mechanism 34 respectively. The lower end of the vertical pipe of the T-shaped pipe extends into the slag 7 and is close to the conveyor belt 31 so that the slag 7 can fully contact the steam pipe 32. The vibration mechanism 33 is located at the upper end of the T-shaped pipe. The T-shaped pipes are arranged in multiple rows and columns on the conveyor belt 31 so as to fully contact the slag 7.

[0029] In another embodiment of the present invention, the curing converter 3 is also equipped with a vacuum system 8. The vacuum system 8 removes the saturated moisture above the slag 7, accelerating the evaporation rate of moisture in the slag 7, thereby further accelerating the dehydration rate of the slag 7. It should be noted that the vacuum system 8 dehydrates through evaporation. The steam pipe 32 provided by this system is mainly used to heat the slag 7 to increase the curing reaction rate and thus achieve dehydration. The heating mechanism 34 is an air-source heating system. The vacuum system 8 is connected to the air-source heating system. The vacuum system 8 removes hot and humid air, which can provide a heat source for the air-source heating system.

[0030] As another embodiment of the present invention: refer to the appendix Figure 4 The mixing and crushing mechanism 2 includes a mixing tank 21. A drive base 22 is rotatably mounted inside the mixing tank 21. A mixing shaft 23 and a crushing shaft 24 are rotatably mounted on the drive base 22. An agitator 25 is fixed to the mixing shaft 23, and a crushing blade 26 is fixed to the crushing shaft 24. A drive mechanism 27, connected to the drive base 22, is located on the outside of the mixing tank 21. The drive mechanism 27 drives the drive base 22 to rotate, causing the agitator 25 and the crushing blade 26 to rotate around the output shaft of the drive mechanism 27. Simultaneously, the drive mechanism 27 drives the agitator 25 to rotate around the mixing shaft 23 and the crushing blade 26 to rotate around the crushing shaft 24. The arrangement of the crushing blade 26 and the agitator 25 ensures that crushing and mixing can be carried out simultaneously, thereby saving processing time for the slag 7 and improving efficiency. The agitator 25 and the crushing blade 26 can rotate on their own axis and revolve around the central axis, effectively ensuring the uniformity of the mixing of the slag 7.

[0031] A specific structure of the crusher blade 26: The crusher blade 26 includes an upper fractal cutter disc 261 and a lower fractal cutter disc 262, which are arranged vertically and alternately. By adopting a fractal structure cutter disc, this structure can provide more cutting edges, increasing the effective working area for cutting. During mixing operations, the contact area between the fractal cutter disc and the material is large, and the particles collide back and forth at the cutting edges, which can effectively reduce the mixing time and achieve energy saving.

[0032] A specific structure of the stirrer 25: see attached diagram. Figure 5-6 The mixer 25 includes a horizontal plate 251 fixed to the mixing shaft 23. A first mixing grid 252 and a second mixing grid 253 are fixed to both ends of the horizontal plate 251, respectively. A third mixing grid 254 is fixed between the first and second mixing grids 252 and 253. Both the first and second mixing grids 252 and 253 are inclined. Setting the mixer 25 in a grid form facilitates the passage of lumpy materials in the slag 7, thereby enabling better mixing of the slag 7.

[0033] One embodiment of the rotation and revolution of the agitator 25 and the crusher 26: A first gear 221, a second gear 222, and a third gear 223 are rotatably arranged inside the drive base 22. The second gear 222 meshes with both the first gear 221 and the third gear 223. The second gear 222 is fixed to the output shaft of the drive mechanism 27. The first gear 221 and the third gear 223 are fixed to the agitator shaft 23 and the crusher shaft 24, respectively. The upper end of the drive base 22 is rotatably connected to the output shaft of the drive mechanism 27, and the lower end of the drive base 22 is fixed to the output shaft of the drive mechanism 27. Specifically, the drive mechanism 27 includes a motor and a reducer. The motor is connected through the reducer, and the reducer is connected to the drive base 22 through its output shaft.

[0034] Specifically, the upper end of the mixing tank 21 is provided with a slag inlet and an additive inlet, and the lower end of the mixing tank 21 is provided with a discharge outlet, which is equipped with a valve, and the valve is controlled to open and close by a hydraulic cylinder.

[0035] As another embodiment of the present invention: refer to the appendix Figure 7 The discharge end of the conveying pipe 11 is connected to a negative pressure cylinder 13. A valve plate 14 for opening and closing the discharge port of the negative pressure cylinder 13 is provided at the bottom of the negative pressure cylinder 13. A jet vacuum device 15 is connected to the bottom of the negative pressure cylinder 13. The water outlet and water inlet of the jet vacuum device 15 are respectively connected to a water tank 16 through pipes. The water provided by the jet vacuum device 15 can be recycled. The water outlet of the jet vacuum device 15 is also connected to a water replenishment valve 17 on the conveying pipe 11. The jet vacuum device 15 is used to draw air from the negative pressure cylinder 13 when the valve plate 14 closes the discharge port and to replenish water to the conveying pipe 11 through the water replenishment valve 17. When valve plate 14 is opened, the slag in conveying pipe 11 falls from negative pressure cylinder 13. When the discharge rate decreases, valve plate 14 closes, and jet vacuum device 15 is activated. The water flowing through this device quickly draws in the air in negative pressure cylinder 13 to create a negative pressure zone within it. Due to the pressure difference, the slag rushes towards the discharge port, and then valve plate 14 is opened again. During the operation of jet vacuum device 15, water supply valve 17 adds a small amount of water to conveying pipe 11 to adjust the fluidity and adhesion of the material near the pipe wall, facilitating rapid material transport. Jet vacuum device 15 can replenish water to the material in conveying pipe 11, and together with negative pressure cylinder 13, they create a negative pressure zone at the discharge end. The combined effect of these two devices rapidly lifts and transports the slag, increasing the conveying capacity of slag 7 and thus effectively improving the processing efficiency of slag 7.

[0036] As another embodiment of the present invention: refer to the appendix Figure 8The water supply valve 17 includes a limit cap 171, a valve core 172, a spring 173, and a valve body 174. The outlet end of the valve core 172 is slidably connected to the valve body 174, and the inlet end cooperates with the limit cap 171 to control the opening and closing of the water supply valve 17. One end of the spring 173 is connected to the valve body 174, and the other end is connected to the inlet end of the valve core 172. The outlet end of the valve core 172 is provided with multiple outlet holes 100. After the jet vacuum device 15 is started, pressurized water enters the cavity of the limit cap 171. Due to the water pressure, the spring 173 on the valve core 172 is pressed down, and the upper end face of the valve core 172 separates from the lower end face of the limit cap 171. The pressurized water enters the cavity between the valve core 172 and the valve body 174, and then sprays out into the delivery pipe 11 through the multiple outlet holes 100 evenly distributed at the lower end of the valve core 172. Multiple outlet holes 100 are provided to control the amount of water supplied.

[0037] In another embodiment of the present invention: a one-way valve 151 is provided on the pipe connecting the water inlet of the jet vacuum device 15 to the water tank 16. The jet vacuum device 15 also includes a water pump 152 disposed between the one-way valve 151 and the water tank 16, and a hydraulic cylinder is connected to the valve plate 14. When the jet vacuum device 15 is started, the water flow pressurized by the water pump 152 flows through the one-way valve 151 and enters the main body of the jet vacuum device 15. The water flow through the main body of the jet vacuum device 15 quickly draws in the air in the negative pressure cylinder 13, thereby forming a negative pressure zone at the discharge end. At this time, the valve plate 14 is in a closed state under the drive of the hydraulic cylinder.

[0038] Specifically, a belt conveyor is provided between the conveying mechanism 1 and the mixing and crushing mechanism 2. The feed end of the conveying mechanism 1 extends into the slag pool 5. The discharge ends of the two conveying mechanisms 1 are connected to the feed end of one belt conveyor. The belt conveyor transports the slag 7 into the mixing and crushing mechanism 2. There are four mixing and crushing mechanisms 2 and two solidification converters 3. The two mixing and crushing mechanisms 2 supply one solidification converter 3.

[0039] Specifically, the mixing and crushing mechanism 2 has a built-in weighing function. When the amount of slag 7 in the mixing and crushing mechanism 2 reaches a certain value, the conveying stops. Then, the agent supply mechanism 4 adjusts various agents according to the amount of slag 7 and transports them to the mixing and crushing mechanism 2.

[0040] This invention enables rapid solidification of tunnel boring machine (TBM) excavated soil 7 at the construction site, completing the drying treatment of the TBM excavated soil. This invention can also be used for in-situ solidification and desoldering treatment of other solid-liquid materials with similar properties.

[0041] In operation, the shield tunneling excavated soil 7 in the excavated soil pit 5 is transported to the mixing and crushing mechanism 2 via the conveying mechanism 1 and conveyor belt 31. The mixing and crushing mechanism 2 crushes and mixes the excavated soil 7. Simultaneously, the agent supply mechanism 4 delivers additives to the mixing and crushing mechanism 2. After crushing and mixing, the excavated soil 7 is pumped into the solidification converter 3. The solidification converter 3 is turned on when the system starts running. The steam pipe 32 quickly raises the internal temperature of the solidification converter 3. After the excavated soil 7 enters, the steam pipe 32 heats the excavated soil 7 to increase the solidification reaction rate. The vacuum system 8 located at the top of the solidification converter 3 operates to create a certain negative pressure inside, reducing the saturated vapor pressure and further accelerating the dehydration rate of the excavated soil 7. After dehydration, the excavated soil 7 is conveyed from the other end of the solidification converter 3 into the storage tank 6, and the shield tunneling excavated soil 7 completes solidification and dehydration. In this invention, the steam pipe 32 only needs to heat the excavated soil 7 to a temperature sufficient for the solidification reaction, and the energy consumption is much lower than that of evaporation dehydration, which helps to reduce dehydration costs and improve product competitiveness. Secondly, the use of spiral blades 12 to convey the slag 7 reduces the workload of subsequent dewatering treatment, thus improving the dewatering efficiency of the slag 7. Thirdly, the mixing, crushing, and chemical dosing of the slag 7 are carried out simultaneously, effectively shortening the processing time and improving its efficiency. Fourthly, the steam pipe 32, vibration mechanism 33, heating mechanism 34, and condensate recovery mechanism 35 provide good heating for the slag 7. Combined with the simultaneous internal and external heating of the slag 7 by the steam pipe 32, this allows for rapid heating of the slag 7, accelerating its dewatering speed.

[0042] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A shield sludge in-situ solidification and removal integrated system, characterized in that, The application relates to a solidification converter, which comprises a conveying mechanism with an inclined distribution, a discharging end of the conveying mechanism being connected with a stirring and crushing mechanism, a discharging end of the stirring and crushing mechanism being connected with the solidification converter, a feeding end of the stirring and crushing mechanism being further connected with a medicament supply mechanism, the solidification converter comprising a conveying belt and steam pipes, lower ends of a plurality of the steam pipes extending into the slag into the conveying belt, the steam pipes being connected with a vibrating mechanism and a heating mechanism for supplying steam to the steam pipes, the steam pipes being further connected with a condensed water recovery mechanism, the medicament supply mechanism being used for supplying additives for solidification reaction to the slag, the conveying mechanism comprising a conveying pipe, helical blades being arranged in the conveying pipe, the steam pipe being a T-shaped pipe, two ends of a horizontal pipe of the T-shaped pipe being respectively connected with the condensed water recovery mechanism and the heating mechanism, a vertical pipe of the T-shaped pipe having a lower end extending into the slag and being close to the conveying belt, the vibrating mechanism being arranged at an upper end of the T-shaped pipe, a discharging end of the conveying pipe being communicated with a negative pressure cylinder, a bottom of the negative pressure cylinder being provided with a valve plate for opening and closing a discharging port of the negative pressure cylinder, the bottom of the negative pressure cylinder being connected with a jet vacuum device, a water outlet end and a water inlet end of the jet vacuum device being respectively connected with a water tank through pipelines, the water outlet end of the jet vacuum device being further connected with a water supplement valve on the conveying pipe, the jet vacuum device being used for sucking air in the negative pressure cylinder when the valve plate closes the discharging port and supplementing water in the conveying pipe through the water supplement valve.

2. The shield sludge in-situ solidifying and separating integrated system according to claim 1, characterized in that, The solidification converter is further provided with a vacuum system, the heating mechanism is an air energy heating system, and the vacuum system is connected with the air energy heating system.

3. The shield sludge in-situ solidifying and separating integrated system according to claim 1, characterized in that, The stirring and crushing mechanism comprises a stirring tank, a driving seat being arranged in the stirring tank, a stirring shaft and a crushing shaft being arranged on the driving seat and rotating, a stirrer being fixed on the stirring shaft, crushing knives being fixed on the crushing shaft, and a driving mechanism being arranged outside the stirring tank and connected with the driving seat.

4. The shield sludge in-situ solidifying and integrating system according to claim 3, characterized in that, The crushing knives comprise upper and lower fractals, the upper and lower fractals being arranged in a staggered mode.

5. The shield sludge in-situ solidifying and integrating system according to claim 4, characterized in that, The stirrer comprises a horizontal plate fixed on the stirring shaft, first and second stirring fences being respectively fixed on two ends of the horizontal plate, a third stirring fence being fixed between the first and second stirring fences, and the first and second stirring fences being arranged in an inclined mode.

6. The shield sludge in-situ solidifying and integrating system according to claim 5, characterized in that, First, second and third gears are arranged in the driving seat and rotating, the second gear being engaged with the first and third gears, the second gear being fixed on an output shaft of the driving mechanism, the first and third gears being respectively fixed on the stirring shaft and the crushing shaft, the driving mechanism comprising a motor and a speed reducer, the motor being connected through the speed reducer, and the speed reducer being connected with the driving seat through the output shaft.

7. The shield sludge in-situ solidifying and integrating system according to claim 6, characterized in that, The water supplement valve comprises a limiting cap, a valve core, a spring and a valve body, the water outlet end of the valve core being slidably connected with the valve body, the water inlet end being matched with the limiting cap to control the water supplement valve, one end of the spring being connected with the valve body, the other end being connected with the water inlet end of the valve core, and the water outlet end of the valve core being provided with a plurality of water outlet holes.

8. The shield sludge in-situ solidifying and integrating system according to claim 7, characterized in that, The pipeline, which is connected with the water tank at the water inlet end of the jet vacuum device, is provided with a one-way valve, and the jet vacuum device further comprises a water pump arranged between the one-way valve and the water tank.

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