Composite stirring treatment device for shield muck

By setting up internal and external rotating structures in the slag mixing and processing device for multiple mixing and cleaning, the problem of fine sand surface attachment in the existing device is solved and the quality of the recovered sand is improved.

CN223454066UActive Publication Date: 2025-10-21CHINA RAILWAY NO 2 ENG GROUP CO LTD
View PDF 0 Cites 0 Cited by

Patent Information

Application Number
CN202521896636.9
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-09-04
Publication Date
2025-10-21
Estimated Expiration
2035-09-04

AI Technical Summary

Technical Problem

The existing slag mixing and processing device has a single sand washing process, which leads to the presence of attachments on the surface of fine sand, making it impossible to achieve a good mixing and sand washing effect, and affecting the quality of the recovered sand.

Method used

A composite stirring treatment device is used, including two inner and outer rotating structures. By rotating and stirring the mixture, the connecting ports and stirring chambers of the inner and outer rotating structures are used for multiple cleanings to remove attachments on the surface of fine sand and improve the quality of recovered sand.

Benefits of technology

Multiple cleaning is achieved in a limited space, which effectively removes the attachments on the surface of fine sand and improves the quality of recovered sand.

✦ Generated by Eureka AI based on patent content.

Smart Images

  • Figure CN223454066U_ABST
    Figure CN223454066U_ABST
Patent Text Reader

Abstract

The utility model discloses a composite stirring treatment device for shield muck, which relates to the technical field of muck stirring treatment and comprises a shell and a composite stirring component arranged in the shell. The composite stirring assembly comprises a first rotating structure, the first rotating structure is used for mixing input muck and water through rotating stirring to obtain a first mixture, a first stirring chamber is formed between the first rotating structure and the inner wall of the shell, and the center of the first rotating structure is hollow to form a second stirring chamber; the first rotating structure is arranged in the first stirring chamber, the second rotating structure is arranged in the second stirring chamber, a plurality of communicating openings for communicating the first stirring chamber with the second stirring chamber are formed in the first rotating structure, and the first mixture enters the second stirring chamber through the communicating openings in the first rotating structure to form a second mixture; the second rotating structure is used for further stirring the second mixture. The sand washing device can achieve better stirring and sand washing effects and improve the quality of recycled sand.
Need to check novelty before this filing date? Find Prior Art

Description

TECHNICAL FIELD

[0001] The utility model relates to a slag stirring treatment technical field. More particularly, it relates to a shield slag composite stirring treatment device. BACKGROUND

[0002] As construction waste, slag usually has the characteristics of uneven particle size and complex properties. Directly piling up not only occupies a large amount of land resources, but also may cause environmental pollution problems. Therefore, dispersing and refining and stirring treatment of slag to make it into reusable resources has become a technical problem that needs to be solved in the industry. The shield slag treatment system in the prior art needs to be further mixed with water to form a mixture after coarse screening of the slag. While washing the fine sand in the slag, the particles of different sizes and densities in the material have different settling velocities in the fluid, which separates the slurry and impurities from the sand. However, the sand washing process of the slag stirring treatment device in the prior art is single, which may cause the surface of the fine sand to have attachments, and the stirring and sand washing effect is not good. SUMMARY

[0003] The utility model discloses a shield slag composite stirring treatment device, which realizes better stirring and sand washing effect and improves the quality of recycled sand.

[0004] To achieve the above-mentioned purpose, the utility model adopts the following technical scheme:

[0005] The utility model discloses a shield slag composite stirring treatment device, which comprises a shell and a composite stirring assembly arranged in the shell.

[0006] The composite stirring assembly comprises:

[0007] A first rotating structure rotatably arranged in the shell is used to mix the input slag and water by rotating to obtain a first mixture. The first rotating structure and the inner wall of the shell form a first stirring chamber, and the central hollow of the first rotating structure forms a second stirring chamber.

[0008] A second rotating structure is arranged in the second stirring chamber. A plurality of communication ports are formed on the first rotating structure to communicate the first stirring chamber and the second stirring chamber. The first mixture enters the second stirring chamber through the communication ports on the first rotating structure to form a second mixture. The second rotating structure is used to further stir the second mixture.

[0009] The fine sand deposited in the stirring process of the first mixture and the second mixture is discharged from a first outlet and a second outlet respectively arranged on the shell corresponding to the first stirring chamber and the second stirring chamber.

[0010] Optionally, the first rotating structure shaft body comprises a mixing feeding section for inputting the slag and water in sequence, a communication section provided with the communication port, and a discharging section.

[0011] The shell is arranged obliquely, and the horizontal position of the side of the shell close to the feeding section is lower than the side of the shell close to the discharging section.

[0012] The end face of the side of the shell close to the discharging section is provided with the first outlet for discharging the fine sand corresponding to the bottom of the first stirring chamber.

[0013] The second rotating structure is coaxially arranged with the first rotating structure, and the end face of the side of the shell close to the discharging section is provided with the second outlet for discharging the fine sand corresponding to the bottom of the second stirring chamber.

[0014] Optionally, the drive assembly is further included for driving the first rotating structure and the second rotating structure to rotate coaxially.

[0015] Optionally, the first rotating structure and the second rotating structure rotate in the same direction, the first rotating structure comprises a first rotating shaft and a first spiral blade arranged on the first rotating shaft, and the second rotating structure comprises a second rotating shaft and a second spiral blade arranged on the second rotating shaft, the second spiral blade and the first spiral blade rotate in the same direction.

[0016] Optionally, the drive assembly comprises:

[0017] A driving motor is used to provide a power source, and the output shaft of the driving motor is coaxially connected with the rotating shafts of the first rotating structure and the second rotating structure.

[0018] Optionally, the first rotating structure and the second rotating structure rotate in opposite directions, the first rotating structure comprises a first rotating shaft and a first spiral blade arranged on the first rotating shaft, and the second rotating structure comprises a second rotating shaft and a second spiral blade arranged on the second rotating shaft, the second spiral blade and the first spiral blade rotate in opposite directions.

[0019] Optionally, the drive assembly comprises:

[0020] A driving motor is used to provide a power source.

[0021] A driving bevel gear is rigidly connected with the output shaft of the driving motor.

[0022] A first driven bevel gear is located at one side of the driving bevel gear and is fixedly arranged on the second rotating structure;

[0023] A second driven bevel gear is located at the other side of the driving bevel gear and is fixedly arranged on the first rotating structure;

[0024] The bevel gears of the first driven bevel gear are oppositely and spacedly arranged with the bevel gears of the second driven bevel gear;

[0025] The bevel gears of the first driven bevel gear are meshed with the bevel gears of the driving bevel gear;

[0026] The bevel gears of the second driven bevel gear are meshed with the bevel gears of the driving bevel gear.

[0027] Optionally, the surface of the first spiral blade is formed with a plurality of first flow guide holes for the first mixture to pass through; and / or,

[0028] The surface of the second spiral blade is formed with a plurality of second flow guide holes for the second mixture to pass through.

[0029] Optionally, the surface of the first spiral blade and / or the surface of the second spiral blade is formed with a plurality of turbulence protrusions arranged along the radial direction of the shell.

[0030] Optionally, the surface of the first spiral blade and / or the surface of the second spiral blade is attached with an abrasive layer.

[0031] The beneficial effects of the present application are as follows:

[0032] The shield muck composite stirring treatment device provided by the utility model comprises a shell and a composite stirring assembly arranged in the shell. The composite stirring assembly comprises a first rotating structure rotatably arranged in the shell, which is used for mixing input muck and water through rotating stirring to obtain a first mixture, a first stirring chamber is formed between the first rotating structure and the inner wall of the shell, the central hollow of the first rotating structure forms a second stirring chamber, a second rotating structure is arranged in the second stirring chamber, a plurality of communication ports for communicating the first stirring chamber and the second stirring chamber are formed on the first rotating structure, the first mixture enters the second stirring chamber through the communication ports on the first rotating structure to form a second mixture, the second rotating structure is used for further stirring the second mixture, fine sand deposited in the first mixture and the second mixture during stirring is discharged from the first outlet and the second outlet arranged on the shell and corresponding to the first stirring chamber and the second stirring chamber respectively, and the second mixture is discharged from the drain port arranged on the shell after stirring. Through the arrangement of the inner and outer rotating structures, the mixture stirred and cleaned by the outer first rotating structure is further stirred and cleaned by the inner second rotating structure, the mixture is subjected to multiple cleaning in the limited space, the excess attachments on the surface of the fine sand in the mixture are removed, and the quality of the recovered sand is improved. BRIEF DESCRIPTION OF DRAWINGS

[0033] The specific embodiments of the utility model will be explained in further detail below with reference to the drawings.

[0034] Figure 1 Fig. 1 shows the outer shape schematic diagram of the specific embodiment of the shield muck composite stirring treatment device of the utility model;

[0035] Figure 2 Fig. 2 shows the outer shape schematic diagram of the specific embodiment of the shield muck composite stirring treatment device of the utility model;

[0036] Figure 3 Fig. 3 shows the radial cross-sectional view of the specific embodiment of the shield muck composite stirring treatment device of the utility model;

[0037] Figure 4 Fig. 4 shows the axial cross-sectional view of the specific embodiment of the shield muck composite stirring treatment device of the utility model;

[0038] Figure 5 Fig. 5 shows the enlarged schematic diagram of the communication port; Figure 2

[0039] REFERENCE SIGNS:

[0040] ​1, shell, 2, drive assembly, 30, first stirring chamber, 31, first rotating shaft, 32, first spiral blade, 33, first flow guide hole, 40, second stirring chamber, 41, second rotating shaft, 42, second spiral blade, 43, second flow guide hole, 5, communication port, 6, first outlet, 7, second outlet. DETAILED DESCRIPTION

[0041] In order to more clearly illustrate the present application, the present application will be further described below in conjunction with preferred embodiments and drawings. Similar components in the drawings are denoted by the same reference numerals. It should be understood by those skilled in the art that the specific description below is illustrative rather than limiting, and should not limit the scope of protection of the present application.

[0042] In the description of the present application, unless otherwise explicitly specified and limited, the terms "connected", "connected", "fixed" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the internal communication of two elements or the interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0043] In the present application, unless otherwise explicitly specified and limited, the first feature "on" or "below" the second feature can include direct contact between the first and second features, or it can include indirect contact between the first and second features through another feature between them.

[0044] In the description of the present embodiment, the terms "up", "down", "left", "right" and other orientation or position relationships are based on the orientation or position relationship shown in the drawings, and are only for the convenience of description and simplification of operation, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application. In addition, the terms "first" and "second" are only used to distinguish in the description and have no special meaning.

[0045] The treatment of shield slag soil is to separate different particle size stone blocks by using a shield slag soil treatment system. The slag soil can be conveyed to a screening separation module by using a belt conveyor, and the slag soil is filtered by the screening separation module, and the coarse material such as pebbles or rock blocks of medium and small particle size obtained by screening is transported out by a slag soil truck.

[0046] For the remaining fine particle size slag soil, the slag soil stirring treatment device is used to separate the fine sand from the mud and impurities by using the different settling velocities of particles of different particle sizes and densities in the fluid. Further cleaning, dewatering and grading of the fine sand are completed by using a tailings recovery machine.

[0047] For the mud and sewage generated in the whole system cleaning classification process, the mud and sewage are collected to a sewage transfer tank, and then an additive (containing calcium oxide, shale inhibitor, polyaluminum chloride, polyacrylamide, etc.) after the deployment test is added to react, and then the high-pressure pump is used to pump into the mud tank for reaction flocculation. After the flocculation is completed, the mud and water are separated. Then, the mud generated in the whole system is pressed by the automatic plate and frame filter press to separate the water and mud in the mud, and the dry mud cake residue can be directly transported out.

[0048] The sand washing process of the existing slag stirring treatment device is single, which may cause the fine sand obtained to have attachments on the surface and not achieve good sand washing effect.

[0049] To solve at least one of the prior art, as shown in Figures 1-5 The embodiment discloses a shield slag composite stirring treatment device. The shield slag composite stirring treatment device comprises a shell 1 and a composite stirring assembly arranged in the shell 1. The composite stirring assembly comprises a first rotating structure and a second rotating structure.

[0050] The first rotating structure is rotatably arranged in the shell 1 and is used for mixing input slag and water by rotating stirring to obtain a first mixture. A first stirring chamber 30 is formed between the first rotating structure and the inner wall of the shell 1.

[0051] A second stirring chamber is formed in the central hollow of the first rotating structure. The second rotating structure is arranged in the second stirring chamber 40. A plurality of communication ports 5 are formed in the first rotating structure and communicate the first stirring chamber 30 and the second stirring chamber 40. The first mixture enters the second stirring chamber 40 through the communication ports 5 on the first rotating structure to form a second mixture. The second rotating structure is used for further stirring the second mixture.

[0052] Fine sand deposited in the first mixture and the second mixture during stirring is discharged from the first outlet 6 and the second outlet 7 arranged in the first stirring chamber 30 and the second stirring chamber 40 on the shell. The second mixture is discharged from the drain port arranged on the shell after stirring.

[0053] Specifically, a drain port can be arranged on the end face of the shell 1 near the feeding section corresponding to the area of the top of the second stirring chamber 40, the end face of the shell 1 near the feeding section corresponding to the area of the top of the first stirring chamber 30 or the top of the outer surface of the shell 1 near the feeding section, so that the first stirring chamber 30 and the second stirring chamber 40 form a water circulation, and the excess liquid is discharged.

[0054] In the present application, the first mixture is cleaned in the first mixing chamber 30 by the flushing action of water in the mixture, and the fine sand in the first mixing chamber 30 is deposited due to its own gravity and is discharged under the thrust force formed by the first rotating structure. The first mixture can enter the second mixing chamber 40 through the communication hole on the first rotating structure after being stirred in the first mixing chamber 30, and the fine sand in the second mixture is continuously cleaned by the flushing action of water in the mixture during stirring in the second mixing chamber 40 and is discharged under the thrust force formed by the second rotating structure and its own gravity. By providing the inner and outer rotating structures, the mixture cleaned by the outer first rotating structure is further stirred and cleaned by the inner second rotating structure, and the mixture is subjected to multiple cleaning in a limited space, removing the excess attachments on the surface of the fine sand in the mixture and improving the quality of the recovered sand.

[0055] In an optional embodiment, the shaft body of the first rotating structure comprises a mixing feeding section for input of the muck and water, a communication section provided with the communication port, and a discharging section.

[0056] The shell 1 is inclined, and the horizontal position of the side of the shell 1 close to the feeding section is lower than the side of the shell 1 close to the discharging section.

[0057] The end face of the side of the shell 1 close to the discharging section is provided with the first outlet 6 for discharging the fine sand corresponding to the bottom of the first mixing chamber 30.

[0058] The second rotating structure is coaxial with the first rotating structure, and the end face of the side of the shell 1 close to the discharging section is provided with the second outlet 7 for discharging the fine sand corresponding to the bottom of the second mixing chamber 40.

[0059] Specifically, the angle of the inclined shell 1 can be set according to requirements, the shell 1 is inclined and the top of the shell 1 is open, the muck and water can be continuously input through the open top of the shell 1, the mixture is formed after the muck and water enter the first mixing chamber 30 for stirring and mixing, and the fine sand is deposited during the stirring and mixing process, so that the excess mixture of mud, impurities and water can flow out from the drain of the shell 1 for recovery. The height of the first outlet 6 and the second outlet 7 can be higher than the height of the drain in the shell 1, so that the first outlet 6 and the second outlet 7 can only discharge the deposited fine sand after cleaning.

[0060] In an optional embodiment, the shield muck composite stirring treatment device can further comprise a feeding assembly, which pours the fine material after coarse screening into the first mixing chamber 30 through the opening at the open top of the shell 1, and rotates and stirs with the water injected into the first mixing chamber 30.

[0061] The feeding assembly can be realized by a belt conveyor in the prior art, which pours the fine slag on the belt conveyor into the shell 1. Of course, in actual applications, a person skilled in the art can set the feeding assembly according to actual requirements, which is a routine technical means in the art, and will not be described here.

[0062] In an optional embodiment, the composite stirring treatment device can further include a water supply assembly for supplying water into the shell 1. The water supply assembly can include a plurality of spray heads, a water storage tank and a water pump, respectively. The water pump sucks water from the water storage tank and sprays it into the shell 1 through the plurality of spray heads to form a mixture with the slag.

[0063] It can be understood that, in order to improve the mixing efficiency of the slag and water, the spray heads can be provided in multiple numbers. The plurality of spray heads suck water from the water storage tank through one or more water pumps and spray it out through the plurality of spray heads, so that the fine sand and water are rapidly mixed at multiple points.

[0064] In an optional embodiment, the water supply assembly can be arranged at the opening of the shell 1 to supply water into the composite stirring treatment device from the top end. The plurality of spray heads can be arranged at different angles to supply water from multiple angles, so that the fine material and water are rapidly mixed.

[0065] Of course, it should be noted that in actual applications, a person skilled in the art can set the specific structure of the water supply assembly according to actual requirements, which is not limited in the present application.

[0066] In an optional embodiment, the axial distance between the feeding end of the first rotating structure and the communication port 5 is 1 / 5-1 / 3 of the diameter of the first rotating structure, so that the slag and water can have space to be fully stirred and mixed to form a mixture before entering the second stirring chamber.

[0067] In an optional embodiment, the composite stirring treatment device further includes a driving assembly 2 for driving the coaxial rotation of the first rotating structure and the second rotating structure.

[0068] In an optional embodiment, the first rotating structure and the second rotating structure rotate in the same direction. The first rotating structure includes a first rotating shaft 31 and a first spiral blade 32 arranged on the first rotating shaft 31. The second rotating structure includes a second rotating shaft 41 and a second spiral blade 42 arranged on the second rotating shaft 41. The second spiral blade 42 has the same rotational direction as the first spiral blade 32.

[0069] Wherein, the first rotating structure and the second rotating structure rotate in the same direction, and the first helical blade 32 and the second helical blade 42 on the first rotating structure and the second rotating structure have the same direction of rotation, so that the first rotating structure and the second rotating structure can form the same direction of thrust to push the fine sand in the first stirring chamber 30 and the second stirring chamber 40 to move towards the first outlet 6 and the second outlet 7, i.e. towards the discharge end of the higher horizontal position of the housing 1, and then discharged through the first outlet 6 and the second outlet 7.

[0070] It should be noted that since the second rotating structure is arranged inside the first rotating structure, the first rotating shaft 31 of the first rotating structure needs to be arranged as a hollow structure to accommodate the second rotating structure in the first rotating shaft 31. The second rotating shaft 41 can be arranged as a hollow structure or a solid structure, which can be arranged according to the actual needs of connection with the driving assembly 2, and the present application does not limit this.

[0071] In an optional embodiment, the first rotating structure and the second rotating structure rotate in the same direction, and the driving assembly 2 can include a driving motor to provide a power source, the output shaft of which is coaxially connected with the rotating shafts of the first rotating structure and the second rotating structure. The driving motor output shaft rotates to drive the rotating shafts of the first rotating structure and the second rotating structure to rotate, so that the helical body can mix and stir the fine sand and water. Specifically, the second rotating shaft 41 of the second rotating structure can be fixed to the end inner wall of the internal cavity of the first rotating structure, and the rotating shaft of the first rotating structure is fixedly connected with the output shaft of the driving motor. Then the driving motor rotates through the output shaft and the first rotating shaft 31 to drive the first rotating structure to rotate, and at the same time drives the second rotating shaft 41 fixed with the first rotating shaft 31 to rotate, realizing the synchronous rotation of the first rotating structure and the second rotating structure.

[0072] In another optional embodiment, the first rotating structure and the second rotating structure rotate in opposite directions, the first rotating structure includes a first rotating shaft 31 and a first helical blade 32 arranged on the first rotating shaft 31, and the second rotating structure includes a second rotating shaft 41 and a second helical blade 42 arranged on the second rotating shaft 41, the second helical blade 42 and the first helical blade 32 have opposite directions of rotation.

[0073] Wherein, the first rotating shaft 31 and the second rotating shaft 41 rotate in opposite directions, and the first helical blade 32 and the second helical blade 42 rotate in opposite directions, so that the fine sand in the first stirring chamber 30 and the second stirring chamber 40 has different stirring states, so that the fine sand in the mixture is washed in different states, improving the stirring and washing effect.

[0074] In an optional embodiment, the driving assembly 2 comprises: a driving motor for providing a power source; a driving bevel gear rigidly connected to an output shaft of the driving motor; a first driven bevel gear located on one side of the driving bevel gear and fixedly arranged on the second rotating structure; a second driven bevel gear located on the other side of the driving bevel gear and fixedly arranged on the first rotating structure; the bevel gears of the first driven bevel gear and the second driven bevel gear are oppositely arranged and spaced apart; the bevel gears of the first driven bevel gear and the driving bevel gear are meshed; and the bevel gears of the second driven bevel gear and the driving bevel gear are meshed.

[0075] Specifically, it can be understood that, in order to realize the rotation of the first rotating shaft 31 and the second rotating shaft 41 in opposite directions, opposite torques can be formed by the bevel gear set. When the driving bevel gear rotates, the first driven bevel gear and the second driven bevel gear oppositely arranged rotate in opposite directions, thereby driving the second rotating structure and the first rotating structure fixedly connected to rotate in opposite directions.

[0076] In an optional embodiment, the surface of the first spiral blade 32 is formed with a plurality of first flow guide holes 33 for the first mixture to pass through; and / or the surface of the second spiral blade 42 is formed with a plurality of second flow guide holes 43 for the second mixture to pass through.

[0077] In an optional embodiment, the surface of the first spiral blade 32 and / or the surface of the second spiral blade 42 is formed with a plurality of radial turbulence protrusions.

[0078] Specifically, it can be understood that the existing rotating structure is rotated and stirred by the spiral blade, but the surface of the existing spiral blade is usually a flat plane, and the effect of stirring the mixture and cleaning the fine sand is limited. In the optional embodiment, at least one of the surfaces of the first spiral blade 32 and the second spiral blade 42 is provided with radial protrusions, which can clean the surface of the fine sand by colliding with the fine sand when the mixture rotates in the circumferential direction, thereby improving the sand quality.

[0079] In an optional embodiment, the surface of the first spiral blade 32 and / or the surface of the second spiral blade 42 is attached with a sanding layer.

[0080] In an optional embodiment, a surface of at least one of the surfaces of the first spiral vane 32 and the second spiral vane 42 is attached with a sanding layer formed of a material with a higher roughness than the spiral vane and formed on the spiral vane, and the rough surface of the sanding layer cleans the surface of the fine sand to a certain extent when the fine sand is deposited. The material of the sanding layer and the attachment method, such as spraying, can be selected by those skilled in the art according to actual needs, which are conventional technical means in the art and will not be described here.

[0081] In an optional embodiment, a filter screen is arranged in the communication port 5 of the first rotating structure, and filter holes are formed in the filter screen, so that when the first mixture in the first stirring chamber 30 passes through the communication port 5 into the second stirring chamber 40, the fine sand with a size larger than the filter holes in the first mixture is filtered and retained in the first stirring chamber 30 and discharged through the outlet of the first stirring chamber 30. The second mixture in the second stirring chamber 40 after the first mixture passes through the filter screen of the communication port 5 is washed, deposited, and moved during further rotation and stirring of the second rotating structure, and is discharged from the outlet of the second stirring chamber 40, so that the composite stirring treatment device of the present application screens the fine sand in the mixture formed by the mixture of the sludge and water while performing composite stirring and washing on the mixture by the first stirring chamber 30 and the second stirring chamber 40, and realizes more refined classification and fine sand recovery.

[0082] Obviously, the above embodiments of the present application are only examples for clearly illustrating the present application, and are not a limitation on the embodiments of the present application. For those skilled in the art, other different forms of changes or variations can be made on the basis of the above description, and all the embodiments cannot be exhausted here. Any obvious changes or variations derived from the technical solutions of the present application still fall within the protection scope of the present application.

Claims

1. A shield slurry composite mixing and processing apparatus, characterized by, The utility model relates to a composite mixing device for mixing soil and water, comprising: a housing and a composite mixing assembly arranged in the housing; the composite mixing assembly comprises: a first rotating structure rotatably arranged in the housing for mixing input soil and water by rotating to obtain a first mixture, a first mixing chamber being formed between the first rotating structure and the inner wall of the housing, and a second mixing chamber being formed in the central hollow of the first rotating structure; a second rotating structure arranged in the second mixing chamber, a plurality of communication ports being formed on the first rotating structure to communicate the first mixing chamber and the second mixing chamber, the first mixture entering the second mixing chamber via the communication ports on the first rotating structure to form a second mixture, and the second rotating structure being used for further mixing the second mixture; fine sand deposited during the mixing of the first mixture and the second mixture being discharged from the housing via a first outlet and a second outlet arranged on the housing corresponding to the first mixing chamber and the second mixing chamber respectively, and the second mixture being discharged from the housing via a water outlet arranged on the housing after being mixed.

2. The shield muck composite mixing and processing apparatus according to claim 1, wherein the shaft of the first rotating structure comprises a mixing feeding section for inputting soil and water, a communication section provided with the communication ports, and a discharging section connected in sequence; the housing is arranged obliquely, the horizontal position of the side of the housing close to the feeding section being lower than the side of the housing close to the discharging section; the end face of the side of the housing close to the discharging section is provided with the first outlet for discharging the fine sand corresponding to the area of the bottom of the first mixing chamber; the second rotating structure is coaxially arranged with the first rotating structure, and the end face of the side of the housing close to the discharging section is provided with the second outlet for discharging the fine sand corresponding to the area of the bottom of the second mixing chamber.

3. The shield muck composite mixing and treating apparatus according to claim 1, characterized by a driving assembly is further included for driving the first rotating structure and the second rotating structure to rotate coaxially.

4. The shield muck composite mixing and treating apparatus according to claim 3, characterized by the first rotating structure and the second rotating structure rotate in the same direction, the first rotating structure comprises a first rotating shaft and first helical blades arranged on the first rotating shaft, and the second rotating structure comprises a second rotating shaft and second helical blades arranged on the second rotating shaft, the second helical blades and the first helical blades rotating in the same direction.

5. The shield muck composite mixing and treating apparatus according to claim 4, wherein the driving assembly comprises: a driving motor for providing a power source, the output shaft of the driving motor being coaxially connected with the rotating shafts of the first rotating structure and the second rotating structure.

6. The shield muck composite mixing and processing apparatus of claim 3, wherein, the first rotating structure and the second rotating structure rotate in opposite directions, the first rotating structure comprises a first rotating shaft and first helical blades arranged on the first rotating shaft, and the second rotating structure comprises a second rotating shaft and second helical blades arranged on the second rotating shaft, the second helical blades and the first helical blades rotating in opposite directions.

7. The shield muck composite mixing apparatus according to claim 6, wherein the driving assembly comprises: a driving motor for providing a power source; a driving bevel gear rigidly connected with the output shaft of the driving motor; a first driven bevel gear located on one side of the driving bevel gear and fixedly arranged on the second rotating structure; a second driven bevel gear located on the other side of the driving bevel gear and fixedly arranged on the first rotating structure; The cone teeth of the first driven bevel gear are oppositely and spacedly arranged with the cone teeth of the second driven bevel gear; The cone teeth of the first driven bevel gear are meshed with the cone teeth of the driving bevel gear; The cone teeth of the second driven bevel gear are meshed with the cone teeth of the driving bevel gear.

8. The shield muck composite mixing apparatus according to any one of claims 4 to 7, wherein The surface of the first spiral blade is formed with a plurality of first flow guide holes for the first mixture to pass through; and / or, The surface of the second spiral blade is formed with a plurality of second flow guide holes for the second mixture to pass through.

9. The shield muck composite mixing apparatus according to any one of claims 4 to 7, wherein The surface of the first spiral blade and / or the surface of the second spiral blade are formed with a plurality of turbulence protrusions arranged radially along the housing.

10. The shield muck composite mixing apparatus according to any one of claims 4 to 7, wherein The surface of the first spiral blade and / or the surface of the second spiral blade are attached with an abrasive layer.