Preparation equipment and preparation method of flow-state solidified soil

Abstract

The invention discloses preparation equipment and a preparation method of flow-state solidified soil, and belongs to the technical field of waste treatment. The device comprises a vibration screening part, a stirring and crushing part and a spiral conveying part, the stirring and crushing part comprises a stirring barrel, fixed grinding teeth are arranged on the stirring barrel, a rotating shaft is arranged in the stirring barrel, rotating grinding teeth and stirring teeth are arranged on the rotating shaft, and tooth top surfaces and tooth root surfaces of the fixed grinding teeth and the rotating grinding teeth are grinding surfaces; and the grinding surfaces of the rotary grinding teeth can pass through the grinding surfaces of the fixed grinding teeth and leave along with the rotation of the rotating shaft at a set distance. The stirring teeth and the grinding teeth are mounted in the stirring barrel, so that not only can the flow-state solidified soil be stirred, but also large particles in the engineering residue soil can be crushed, and the engineering residue soil can be better mixed.

Description

Technical Field

[0001] The invention relates to the technical field of waste treatment, and in particular to a preparation device and a preparation method of fluidized solidified soil. Background Art

[0002] The information disclosed in this background technology section is only intended to enhance the understanding of the overall background of the invention, and should not necessarily be regarded as an admission or any form of suggestion that the information constitutes the prior art already known to a person skilled in the art.

[0003] Construction waste (abandoned soil) and construction mud account for about 70% to 80% of the total construction waste. If these wastes are not handled properly, they are very likely to cause disasters such as collapse and mudslides. They will also destroy the original ecological balance of the soil and cause water pollution, which is extremely harmful. Using construction waste as raw material to prepare fluidized solidified soil is one of the ways to treat construction waste. Fluidized solidified soil is obtained by mixing construction waste, water and curing agent. It can be used for roadbed filling, platform backfill, soft foundation reinforcement and other projects. It has the advantages of controllable quality, green environmental protection and low price.

[0004] However, most of the fluidized solidified soil is currently mixed in factories, which seriously increases the transportation cost. If factory mixing equipment is not used, it is difficult to mix the engineering slag into a slurry that meets the standards due to the complex composition and unstable water content of the construction slag, which contains a large number of large particles. Summary of the invention

[0005] In view of the shortcomings of the prior art, the purpose of the present invention is to provide a preparation device and a preparation method for fluidized solidified soil, which uses a vibrating screen to process engineering waste soil, and processes engineering waste soil through fixed rolling teeth and rotating rolling teeth in a mixing mill, which can efficiently process large particles of soil and avoid adhesion.

[0006] In order to achieve the above object, the present invention is implemented through the following technical solutions:

[0007] A first aspect of the present invention provides a preparation device for fluidized solidified soil, comprising:

[0008] Vibrating screen section, stirring and crushing section and screw conveying section;

[0009] The vibration screening section includes a vibration screen and a conveyor belt, the vibration screen is arranged above the conveyor belt, and the end of the conveyor belt is connected to the stirring and crushing section;

[0010] The mixing and crushing part comprises a mixing barrel, the mixing barrel is provided with fixed crushing teeth, a rotating shaft is provided in the mixing barrel, the rotating shaft is provided with rotating crushing teeth and mixing teeth, the top surfaces and root surfaces of the fixed crushing teeth and the rotating crushing teeth are crushing surfaces, and the crushing surfaces of the rotating crushing teeth can pass through the crushing surfaces of the fixed crushing teeth at a set distance and leave as the rotating shaft rotates;

[0011] The screw conveying part includes a screw conveyor, and a terminal end of the screw conveyor is communicated with the stirring and crushing part.

[0012] Optionally, the vibrating screen includes a screen, a vibrator and a funnel, wherein the screen is arranged parallel to the conveyor belt; the funnel is located above the screen and fixedly connected to the vibrator.

[0013] Optionally, the screen is fixedly connected to the vibrating machine.

[0014] Optionally, the screen and the conveyor belt are arranged obliquely, and the height of one side of the mixing barrel is higher than that of one side of the funnel; and the screen has through sieve holes evenly distributed on the screen.

[0015] Optionally, the end of the conveyor belt is located above the opening of the mixing barrel.

[0016] Optionally, the mixing barrel is provided with a fixed rolling tooth row, and the fixed rolling tooth row is provided with a plurality of fixed rolling teeth in the length direction. The axis of the rotating shaft is parallel to the length direction of the fixed rolling tooth row, and a rotating rolling tooth row is provided on the rotating shaft, and the rotating rolling tooth row is provided with a plurality of rotating rolling teeth along the length direction of the rotating shaft.

[0017] Optionally, the rotary pressing teeth and the stirring teeth are connected to the side wall of the rotating shaft via a frame structure, and the distance between the rotary pressing teeth and the rotating shaft is greater than the distance between the stirring teeth and the rotating shaft.

[0018] Optionally, a stirring tooth row is provided on the rotating shaft, and the stirring tooth row has a plurality of stirring teeth arranged in the length direction of the rotating shaft.

[0019] Optionally, the rotating rolling tooth row and the stirring tooth row are arranged at intervals on the periphery of the rotating shaft.

[0020] Optionally, the cross-sections of the rotating rolling teeth and the fixed rolling teeth in the height direction are rectangular.

[0021] Optionally, the area of ​​the rectangle is consistent with the mesh area of ​​the vibrating screen.

[0022] Optionally, the rolling surface is a plane or a curved surface, and the distance between the upper and lower rolling surfaces gradually decreases in the direction in which soil particles enter.

[0023] Optionally, the rolling surface of the fixed rolling teeth is an inwardly concave arc surface, and the rolling surface of the rotating rolling teeth is an outwardly convex arc surface.

[0024] Optionally, the mixing barrel is provided with a water injection pipe, and a water injection pump is provided on the water injection pipe.

[0025] Optionally, a slurry discharge pipe is provided at the bottom of the mixing barrel, a slurry discharge pump is provided on the slurry discharge pipe, and the slurry discharge pipe is connected to the inner cavity of the mixing barrel through a slurry leakage hole at the bottom of the mixing barrel.

[0026] Optionally, a sensor is provided at the bottom of the mixing barrel, and the sensor is connected to a control console. The rotating shaft is connected to a motor, and the motor is connected to the control console.

[0027] Optionally, the console is connected to a vibrating screen, a screw conveyor, a water injection pump and a slurry discharge pump.

[0028] In a second aspect, a method for preparing fluidized solidified soil using the above-mentioned fluidized solidified soil preparation device comprises the following steps:

[0029] S1. Pour the construction waste into the vibrating screen. The qualified construction waste passes through the screen of the vibrating screen and falls onto the conveyor belt, and is sent to the mixing barrel by the conveyor belt. The unqualified construction waste cannot pass through the screen and rolls down the screen to the outside of the conveyor belt.

[0030] S2, the screw conveyor delivers the curing agent into the mixing barrel;

[0031] S3, inject clean water into the mixing barrel through the water injection pipe;

[0032] S4, the rotating shaft drives the rotating rolling gear row and the stirring gear row to rotate around the shaft, and the rotating rolling gear row crushes the large particles of soil in the construction waste soil in the process of passing through the gaps of the fixed rolling gear row;

[0033] S5. After the construction waste soil, curing agent and water are mixed into qualified fluidized solidified soil, it is discharged through the slurry outlet pipe.

[0034] Optionally, in S1, the construction waste is pre-treated by a rotary tillage plow before being poured into the vibrating screen.

[0035] Optionally, the control console controls the ratio of construction waste soil, water and curing agent by controlling the vibrating screen, the screw conveyor and the water injection pump on the water injection pipe, and the control console monitors the amount of material added in the mixing barrel through the sensor.

[0036] Optionally, after S5 is completed, clean water is injected into the mixing barrel through the water injection pipe to 2 / 3 of the capacity of the mixing barrel, and the rotating shaft is started to clean the mixing barrel.

[0037] The beneficial effects of the present invention are as follows:

[0038] 1. The mixing barrel in the mixing and crushing part of the present invention is internally equipped with mixing teeth and rolling teeth, which can not only mix the fluidized solidified soil, but also crush the large particles in the engineering slag. The fixed rolling teeth are located at the bottom of the mixing barrel. The large particles of soil sink to the bottom of the barrel due to gravity, so that the engineering slag can be completely crushed. The rolling teeth are designed to be rectangular. On the premise of ensuring the overall cutting area and cutting efficiency, the area of ​​a single rolling surface is small, avoiding the generation of mud skin during the soil crushing process, and the problem that the mud skin adheres to the rolling surface and is difficult to peel off. The mixing teeth and the rotating rolling teeth work together to solve the problem that large particles of soil in the engineering slag are difficult to mix fully with water and curing agent; so that it can be better mixed with the curing agent and water, while ensuring the quality of the fluidized solidified soil, taking into account the production efficiency.

[0039] 2. The present invention uses a screw conveyor to convey the curing agent, which is mostly a dry powder type. The screw conveyor avoids the generation of dust and can prevent the curing agent from being contaminated. The screen of the vibrating screen is located above the conveyor belt and parallel to the conveyor belt. Under the action of gravity and vibration, unqualified engineering slag rolls off the screen to the ground, avoiding the process of the vibrating screen machine cleaning unqualified materials.

[0040] 3. The controller of the present invention adopts a PID system to connect the vibrating screen, the screw conveyor and the mixing mill, which can accurately control the amount of each component of the fluidized solidified soil, ensure the quality of the fluidized solidified soil, realize the automated production of the fluidized solidified soil, and reduce the production cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] The accompanying drawings in the specification, which constitute a part of the present invention, are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute improper limitations on the present invention.

[0042] In order to show the positions of various parts, the distances or sizes between them are exaggerated in the figure, and the schematic diagram is for illustration only.

[0043] Figure 1 It is a front view of the preparation equipment of fluidized solidified soil in Example 1.

[0044] Figure 2 It is a right view of the preparation equipment of fluidized solidified soil in Example 1.

[0045] Figure 3 It is a left view of the preparation equipment of fluidized solidified soil in Example 1.

[0046] Figure 4 It is a structural diagram of the screw conveyor in Example 1.

[0047] Figure 5 2 is a diagram of the vibrating screen structure in Example 1.

[0048] Figure 6 It is a structural diagram of the stirring pulverizer in Example 1.

[0049] Figure 7 It is a schematic diagram of the rolling process in Example 1.

[0050] Figure 8 It is a schematic diagram of the crushing principle of construction waste in Example 1.

[0051] Among them, 1. screw conveyor; 2. mixing barrel; 3. vibrating screen; 4. feed port; 5. conveying motor; 6. discharge port; 7. mixing motor; 8. water injection pipe; 9. conveyor belt; 10. funnel; 11. vibrator; 12. sensor; 13. control console; 14. slurry discharge pipe; 15. screen; 16. baffle; 17. rotary rolling gear row; 18. mixing gear row; 19. fixed rolling gear row; 20. slurry leakage hole; 21. water inlet hole; 22. auger rod; 23. rotating shaft; 24. rolling surface; 25. frame structure; 26. tooth top surface; 27. tooth root surface; 28. soil particles. DETAILED DESCRIPTION

[0052] It should be noted that the following detailed descriptions are exemplary and are intended to provide further explanation of the present invention. Unless otherwise specified, all technical and scientific terms used herein have the same meanings as those commonly understood by those skilled in the art to which the present invention belongs.

[0053] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit exemplary embodiments according to the present invention. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprising" and / or "including" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0054] Example 1

[0055] A preparation device for fluidized solidified soil, such as Figure 1 As shown, including:

[0056] Vibrating screen section, stirring and crushing section and screw conveying section;

[0057] The vibration screening section includes a vibration screen 3 and a conveyor belt 9. The vibration screen 3 is arranged above the conveyor belt 9. The end of the conveyor belt 9 is connected to the stirring and crushing section.

[0058] The mixing and crushing part includes a mixing barrel 2, such as Figure 6As shown, the mixing barrel 2 is provided with a fixed rolling tooth row 19, and the fixed rolling tooth row 19 is provided with a plurality of fixed rolling teeth in the length direction. A rotating shaft 23 is provided in the mixing barrel 2, and the axis of the rotating shaft 23 is parallel to the length direction of the fixed rolling tooth row 19. A rotating rolling tooth row 17 and a stirring tooth row 18 are provided on the rotating shaft 23. The rotating rolling tooth row 17 is provided with a plurality of rotating rolling teeth in the length direction of the rotating shaft 23. The tooth top surfaces and tooth root surfaces of the fixed rolling teeth and the rotating rolling teeth are both rolling surfaces 24. The rotating rolling teeth can pass through the gaps between the fixed rolling teeth and leave as the rotating shaft 23 rotates. In this process, the rolling surfaces of the rotating rolling teeth can be opposite to the rolling surfaces of the fixed rolling teeth at a set distance as the rotating shaft rotates, and gradually stagger and separate.

[0059] like Figure 1 As shown, the screw conveying part includes a screw conveyor 1, and the end of the screw conveyor is connected to the stirring and crushing part.

[0060] Through the above arrangement, stirring teeth and rolling teeth are installed inside the mixing barrel 2, which can not only stir the fluidized solidified soil, but also crush the large particles in the construction waste soil so that it can be better mixed with the curing agent and water, and can prevent the large particles in the construction waste soil from adhering to the rolling teeth. Therefore, the construction waste soil can be processed and utilized at the construction site, avoiding the use of factory mixing equipment, which can greatly save the economic cost and time cost of the project.

[0061] like Figure 1 As shown, the vibrating screen 3 includes a screen 15, a vibrator 11 and a funnel 10, the screen 15 is arranged parallel to the conveyor belt 9; the funnel 10 is located above the screen 15 and is fixedly connected to the vibrator 11; the screen 15 is fixedly connected to the vibrator 11; the screen 15 and the conveyor belt 9 are arranged obliquely, and the height of one side of the mixing barrel 2 is higher than that of one side of the funnel 10; the screen 15 has sieve holes evenly distributed through it; the construction waste soil falling on the screen 15 is subjected to the effects of gravity and vibration, and the qualified waste soil particles pass through the screen 15 and are sent to the inside of the mixing barrel 2 by the conveyor belt 9, while the unqualified waste soil particles cannot pass through the screen 15, and directly roll down along the upper surface of the inclined screen 15 to the outside of the conveyor belt 9 for subsequent processing, thereby avoiding the process of the vibrating screen cleaning unqualified materials.

[0062] like Figure 5 As shown, baffles 16 are provided on both sides of the conveyor belt 9, the vibrator 11 is connected to the baffles 16, and the funnel 10 is fixed on the baffles 16 through support rods.

[0063] like Figure 2 As shown, the end of the conveyor belt 9 is located above the opening of the mixing barrel 2, and the construction waste raw materials enter the mixing barrel 2 in the form of scattering, which is beneficial to the subsequent pressing and mixing.

[0064] like Figure 6As shown, the rotating shaft 23 is connected to the stirring motor 7 and can rotate under the drive of the stirring motor 7.

[0065] The rotating rolling tooth row 17 and the stirring tooth row 18 are connected to the side wall of the rotating shaft 23 through a frame structure 25; the frame structure 25 can avoid obstruction to the flow of slurry, which is beneficial to improving the uniformity of mixing and the sedimentation of large particles of soil to the fixed rolling tooth row 19 at the bottom, thereby improving production efficiency.

[0066] The distance between the rotating pressing tooth row 17 and the rotating shaft 23 is greater than the distance between the stirring tooth row 18 and the rotating shaft 23 , so as to prevent the stirring tooth row 18 from colliding with the fixed pressing tooth row 19 .

[0067] like Figure 7 As shown, the rotary rolling tooth row 17 and the stirring tooth row 18 are arranged at intervals on the periphery of the rotating shaft 23. In this embodiment, the number of the rotary rolling tooth row 17 and the number of the stirring tooth row 18 are respectively 2, which are arranged at 90° intervals on the periphery of the rotating shaft 23.

[0068] like Figure 7 As shown in the figure, the cross-section of the rotating rolling teeth and the fixed rolling teeth in the height direction is a rectangle, and the area of ​​the rectangle is consistent with the screen hole area of ​​the vibrating screen. The rolling teeth are designed to be rectangular. Under the premise of ensuring the overall rolling area and rolling efficiency, the area of ​​a single rolling surface is small, which avoids the generation and adhesion of mud skin during the soil crushing process. The stirring teeth and the rotating rolling teeth work together to solve the problem that large particles of soil in engineering slag are difficult to fully mix with water and curing agent; the width of the fixed rolling tooth row 19 (the dimension parallel to the movement path is the width) is 10cm The size of the rolling surface 24 of a single fixed rolling tooth (the projected size in the direction of the rotation axis 23) is approximately 5×10 cm, the width of the rotating rolling tooth row 17 (the width is the size in the direction parallel to the movement path) is 10 cm, the size of the rolling surface 24 of a single rotating rolling tooth (the projected size in the direction of the rotation axis 23) is approximately 5×10 cm, the rolling surfaces 24 of the fixed rolling teeth and the rotating rolling teeth are arc surfaces, and the rolling surface 24 of the fixed rolling teeth is a concave arc surface, and the rolling surface 24 of the rotating rolling teeth is a convex arc surface.

[0069] like Figure 8 As shown, the rolling surface 24 of the fixed rolling teeth and the rotating rolling teeth includes a cylindrical surface with the rotation axis as the central axis. As the upper rotating rolling tooth row 17 rotates in the direction of the dotted arrow in the figure, the upper tooth root surface 27 and the lower tooth top surface 26 gradually overlap, allowing soil particles 28 to enter the gap between the two and be rolled.

[0070] like Figure 8As shown, in the process of the rotating rolling teeth passing through the gap between the fixed rolling teeth, the tooth top surface (i.e., the rolling surface) of the fixed rolling tooth row 19 is opposite to the tooth root surface (also the rolling surface) of the rotating rolling tooth row 17, and the tooth root surface 27 of the fixed rotating rolling tooth row is opposite to the tooth top surface 26 of the rotating rolling tooth row. In the direction in which the soil particles 28 enter, the distance between the upper and lower rolling surfaces (i.e., the tooth top surface 26 and the tooth root surface 27) gradually decreases, so that when the rotating rolling teeth pass through the fixed rolling teeth, the soil particles 28 sandwiched in the middle are subjected to the positive stress generated by the gradual decrease in the distance between the rolling surfaces. At the same time, due to the rotating motion of the rotating rolling tooth row 17, the upper and lower parts of the soil particles 28 are subjected to the shearing effect generated by the movement of the rolling surfaces in different directions. Therefore, it is more conducive to evenly crushing large particles of soil and preventing adhesion. Compared with pointed cutting teeth, the rolling teeth with a rectangular cross section in the height direction have a smoother rolling surface, and the relative rolling surface 24 is larger in area. The large particles of soil sandwiched between the fixed rolling teeth and the rotating rolling teeth are sheared and crushed as a whole under the action of the shearing movement from both sides. The particles are quickly crushed and quickly penetrated by water to form a homogeneous slurry, which prevents adhesion to the surface of the rolling teeth to block the rolling channel and cause the rolling effect of the device to fail. In order to ensure effective penetration of water, the relative movement speed of the fixed rolling tooth row 19 and the rotating rolling tooth row 17 should not be too fast. Corresponding to the width of the rotating rolling tooth row 17, its rotation speed can be adjusted within the range of 15 to 25 r / min to prevent the formation of mud cakes with high viscosity from adhering to the rolling surface.

[0071] like Figure 2 As shown, the mixing barrel 2 is provided with a water injection pipe 8, on which a water injection pump is provided, and the water injection pipe 8 is connected to one side of the bottom of the mixing barrel 2, as shown in FIG. Figure 6 As shown, the opening of the water injection pipe 8 at the bottom of the mixing barrel is a water inlet 21.

[0072] like Figure 2 As shown, a slurry discharge pipe 14 is provided at the bottom of the mixing barrel 2, and a slurry discharge pump is provided on the slurry discharge pipe 14. Figure 6 As shown, the slurry discharge pipe 14 is connected to the inner cavity of the mixing barrel 2 through the slurry leakage hole 20 at the bottom of the mixing barrel 2. The slurry leakage hole 20 is far away from the water inlet hole 21, and the slurry discharge pipe 14 is connected to the side of the bottom of the mixing barrel 2 far away from the water injection pipe 8; the size of the slurry leakage hole 20 is a set size, and is distributed on both sides of the lowest end of the rotation range of the fixed rolling tooth row 19, so that large particles of soil that cannot pass through the slurry leakage hole 20 can be gathered near both sides of the lowest end of the rotation range of the fixed rolling tooth row 19, and can be quickly crushed by the rolling teeth during mixing.

[0073] like Figure 3A sensor 12 is provided on the outer side of the bottom of the mixing barrel 2 shown in the figure. The sensor 12 is connected to the control console 13. The rotating shaft 23 is connected to the mixing motor 7. The mixing motor 7 is connected to the control console 13. The sensor 12 includes a gravity sensor for detecting the weight of the material added in the mixing barrel 2.

[0074] like Figure 4 As shown, the lower end of the screw conveyor 1 is provided with a feed port 4, and the upper end is provided with a discharge port 6. Figure 2 As shown, the discharge port 6 extends into the mixing barrel 2 to prevent the powder from generating dust. The screw conveyor 1 is provided with an auger rod 22, which can be driven by the conveying motor 5 to convey the powdered material conveyed from the feed port 4 to the discharge port 6 above for discharge.

[0075] The control console 13 is connected to the vibrating screen 3, the screw conveyor 1, the water injection pipe 8 and the slurry outlet pipe 14. The control console 13 is provided with a PID system, which can control the amount of water, construction waste soil and curing agent added and the stirring and crushing time, and can realize the automated preparation of fluidized solidified soil, saving labor costs, making the quality of the fluidized solidified soil more reliable and the preparation efficiency higher.

[0076] The method for preparing fluidized solidified soil using the device of this embodiment includes the following steps:

[0077] S1. Pour the construction waste into the vibrating screen 3. The qualified construction waste passes through the screen 15 of the vibrating screen 3 and falls onto the conveyor belt 9, and is sent to the mixing barrel 2 by the conveyor belt 9. The unqualified construction waste cannot pass through the screen 15 and rolls down along the screen 15 to the outside of the conveyor belt 9.

[0078] S2, screw conveyor 1 delivers the curing agent into the mixing barrel;

[0079] S3, inject clean water into the mixing barrel 2 through the water injection pipe until the set water volume is reached;

[0080] S4, the rotating shaft 23 drives the rotating rolling tooth row 17 and the stirring tooth row 18 to rotate around the shaft, and the rotating rolling tooth row 17 rolls the large particles of soil in the construction waste in the process of passing through the gap of the fixed rolling tooth row 19;

[0081] S5. After the construction waste soil, curing agent and water are mixed into qualified fluidized solidified soil, it is discharged through the slurry outlet pipe and pumped to the slurry storage tank or designated location.

[0082] Through the above process, the construction waste soil can be processed and utilized on the construction site instead of factory mixing. And because the device is divided into three parts, it can level the site at the construction site, place the fluidized solidified soil preparation equipment at the designated location, and align the screw conveyor discharge hole and the vibrating screen drive belt above the mixing crusher, so as to flexibly operate.

[0083] In S1, the construction waste soil is pre-treated by a rotary tillage plow before being poured into the vibrating screen to initially crush the large particles of soil.

[0084] The control console 13 controls the ratio of construction waste soil, water and curing agent by controlling the vibrating screen 3 , the screw conveyor 1 and the water injection pipe 8 on the water injection pipe. The control console 13 monitors the amount of material added in the mixing barrel 2 through the sensor 12 .

[0085] After S5 is completed, clean water is injected into the mixing barrel 2 through the water injection pipe to 2 / 3 of the capacity of the mixing barrel, and the rotating shaft 23 is started to clean the mixing barrel.

[0086] Example 2

[0087] The difference between this embodiment and embodiment 1 is:

[0088] The rolling surfaces 24 of the rolling teeth of the fixed rolling tooth row 19 and the rotating rolling tooth row 17 are planes. Due to the rotation of the rotating rolling teeth 17, the distance between the upper and lower rolling surfaces can also be gradually reduced in the direction of the soil particles entering. The rolling crushing principle is the same as that of embodiment 1, and the shape is easier to machine.

[0089] The above description is only the preferred embodiment of the present application and is not intended to limit the present application. For those skilled in the art, the present application may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A preparation device for fluidized solidified soil, characterized in that: include: Vibrating screen section, stirring and crushing section and screw conveying section; The vibration screening section includes a vibration screen and a conveyor belt, the vibration screen is arranged above the conveyor belt, and the end of the conveyor belt is connected to the stirring and crushing section; The mixing and crushing part comprises a mixing barrel, the mixing barrel is provided with fixed rolling teeth, a rotating shaft is provided in the mixing barrel, rotating rolling teeth and mixing teeth are provided on the rotating shaft, the tooth top surfaces and tooth root surfaces of the fixed rolling teeth and the rotating rolling teeth are both rolling surfaces, and the rolling surfaces of the rotating rolling teeth can pass through the rolling surfaces of the fixed rolling teeth at a set distance and leave as the rotating shaft rotates; The screw conveying part includes a screw conveyor, and a terminal end of the screw conveyor is communicated with the stirring and crushing part.

2. The preparation equipment for fluidized solidified soil according to claim 1, characterized in that: The vibrating screen comprises a screen, a vibrator and a funnel, wherein the screen is arranged parallel to the conveyor belt; the funnel is located above the screen and is fixedly connected to the vibrator; Optionally, the screen is fixedly connected to the vibrating machine.

3. The preparation equipment for fluidized solidified soil according to claim 2, characterized in that: The screen and the conveyor belt are arranged obliquely, and the height of one side of the mixing barrel is higher than that of one side of the funnel; and the screen is provided with evenly distributed through sieve holes.

4. The preparation equipment for fluidized solidified soil according to claim 2, characterized in that: The end of the conveyor belt is located above the opening of the mixing barrel.

5. The preparation equipment for fluidized solidified soil according to claim 4, characterized in that: The mixing barrel is provided with a fixed rolling tooth row, and the fixed rolling tooth row is provided with a plurality of fixed rolling teeth in the length direction. The axis of the rotating shaft is parallel to the length direction of the fixed rolling tooth row. The rotating shaft is provided with a rotating rolling tooth row, and the rotating rolling tooth row is provided with a plurality of rotating rolling teeth along the length direction of the rotating shaft. Optionally, the rotating pressing tooth row and the stirring tooth row are connected to the side wall of the rotating shaft through a frame structure, and the distance between the rotating pressing tooth row and the rotating shaft is greater than the distance between the stirring tooth row and the rotating shaft; Optionally, a stirring tooth row is provided on the rotating shaft, and the stirring tooth row is provided with a plurality of stirring teeth in the length direction of the rotating shaft; Optionally, the rotating rolling tooth row and the stirring tooth row are arranged at intervals on the periphery of the rotating shaft.

6. The preparation equipment for fluidized solidified soil according to claim 1, characterized in that: The rotating rolling teeth row and the stirring teeth row are arranged at intervals on the periphery of the rotating shaft; Optionally, the cross-sections of the rotating pressing teeth and the fixed pressing teeth in the height direction are rectangular; Optionally, the area of ​​the rectangle is consistent with the mesh area of ​​the vibrating screen; Optionally, the rolling surface is a plane or a curved surface, and the distance between the upper and lower rolling surfaces gradually decreases in the direction in which the soil particles enter; Optionally, the rolling surface of the fixed rolling teeth is an inwardly concave arc surface, and the rolling surface of the rotating rolling teeth is an outwardly convex arc surface.

7. The preparation equipment for fluidized solidified soil according to claim 1, characterized in that: The mixing barrel is provided with a water injection pipe, and the water injection pipe is provided with a water injection pump; Optionally, a slurry discharge pipe is provided at the bottom of the mixing barrel, a slurry discharge pump is provided on the slurry discharge pipe, and the slurry discharge pipe is connected to the inner cavity of the mixing barrel through a slurry leakage hole at the bottom of the mixing barrel.

8. The preparation equipment for fluidized solidified soil according to claim 1, characterized in that: A sensor is provided at the bottom of the mixing barrel, and the sensor is connected to the console; the rotating shaft is connected to a motor, and the motor is connected to the console; Optionally, the console is connected to a vibrating screen, a screw conveyor, a water injection pump and a slurry discharge pump.

9. A method for preparing fluidized solidified soil using the fluidized solidified soil preparation device according to any one of claims 1 to 8, characterized in that The process includes: S1. Pour the construction waste into the vibrating screen. The qualified construction waste passes through the screen of the vibrating screen and falls onto the conveyor belt, and is sent to the mixing barrel by the conveyor belt. The unqualified construction waste cannot pass through the screen and rolls down the screen to the outside of the conveyor belt. S2, the screw conveyor delivers the curing agent into the mixing barrel; S3, inject clean water into the mixing barrel through the water injection pipe; S4, the rotating shaft drives the rotating rolling gear row and the stirring gear row to rotate around the shaft, and the rotating rolling gear row crushes the large particles of soil in the construction waste soil in the process of passing through the gaps of the fixed rolling gear row; S5. After the construction waste soil, curing agent and water are mixed into qualified fluidized solidified soil, it is discharged through the slurry outlet pipe.

10. The method for preparing fluidized solidified soil according to claim 9, characterized in that: In S1, the construction waste soil was pre-treated by rotary plow before being poured into the vibrating screen; Optionally, the control console controls the ratio of construction waste soil, water and curing agent by controlling the vibrating screen, screw conveyor and water injection pump on the water injection pipe, and the control console monitors the amount of material added in the mixing barrel through sensors; Optionally, after S5 is completed, clean water is injected into the mixing barrel through the water injection pipe to 2 / 3 of the capacity of the mixing barrel, and the rotating shaft is started to clean the mixing barrel.

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