Multi-layer crushing-stirring self-compacting flow-state self-congealing solidified soil manufacturing device and method

Abstract

The invention provides a multi-layer crushing-stirring self-compacting flow-state self-solidifying solidified soil manufacturing device and method. A top pre-separation device, a middle soil breaking and stirring device and a bottom vortex soil breaking and stirring device are sequentially arranged in a flow-state soil mixing box from top to bottom. The middle soil breaking and stirring device can gradually refine original soil, and the bottom vortex soil breaking and stirring device further crushes the original soil and conducts vortex mixing and stirring on the original soil and the formed flow-state solidified soil slurry. The stirring mode can ensure the uniform mixing of the curing agent and the soil, effectively avoids the generation of precipitates, and ensures the uniformity of the slurry. In addition, the vortex soil breaking and stirring device further has an upward supporting function, surrounding curing agent slurry or process fluid soil can be upwards supported to form backflow, smashing and stirring treatment continues under the action of the middle soil breaking and stirring device, original soil particles are further refined, and meanwhile the stirring uniformity is improved.

Description

Technical Field

[0001] The invention relates to the production of fluidized solidified soil, and in particular to a multi-layer crushing-mixing self-compacting fluidized self-solidifying soil production device and method. Background Art

[0002] In the field of underground engineering, including foundation pits, underground cavities (such as mining pits and caves, karst caves, etc.), underground pipelines, underground pipeline corridors, etc., backfill problems are often involved. How to reasonably and effectively use the surrounding waste soil to carry out high-quality backfill for the above-mentioned projects is an effective way to realize the resource utilization of waste soil and practice "green rock and soil".

[0003] At present, the commonly used method is to use fluidized solidified soil to recycle waste soil. The usual practice is to first add water to the waste soil and stir it to turn it into fluidized soil. At the same time, additives such as dispersants and solidifiers are added. After mixing evenly, it is used as filler for construction. The following problems often occur in the actual construction process:

[0004] (1) When clay soil is used as filling material, it is difficult to completely crush it due to its high water content and good compressibility. It is often necessary to add a certain amount of granular mixture to improve the gradation in order to achieve the fluidity of the fluid soil. The entire construction process is cumbersome;

[0005] (2) Most construction parties consider the preparation of qualified fluidized soil from the perspective of solid additives by configuring a relatively precise ratio of material combinations. However, in actual operation, due to the complex composition of the abandoned soil, which may contain clay, sandy soil, gravel, brick concrete and other construction waste, the above-mentioned special curing agents often fail to achieve the expected effect. The treatment process takes a long time, consumes a lot of energy, has low efficiency and high cost.

[0006] (3) The existing processing equipment has a single function and often only uses stirring to crush and mix the raw materials. During the production process, uneven conditions such as agglomeration and sedimentation of the fluidized soil often occur, and the engineering filling effect is average. Summary of the invention

[0007] The purpose of the present invention is to address the deficiencies of the above-mentioned technologies and to propose a multi-layer crushing-mixing self-compacting fluidized self-setting soil production device and method. The initial crushing of traditional clay soil is achieved by providing a top pre-separation device and a middle soil-breaking and mixing device, and the further crushing and sufficient mixing of the soil layer is achieved by providing a bottom vortex soil-breaking and mixing device. The above-mentioned device effectively solves the problems of high difficulty in crushing and uneven mixing of large amounts of raw soil in the traditional mixing process. It has clear construction technology, high efficacy, low cost, strong feasibility, and is worth promoting and implementing. In order to achieve the above-mentioned purpose, the technical scheme of the present invention is as follows:

[0008] A multi-layer crushing-mixing self-compacting fluidized self-setting solidifying soil manufacturing device, the self-compacting fluidized self-setting solidifying soil manufacturing device comprises a fluidized soil mixing box and a curing agent slurry premixing box connected to the fluidized soil mixing box, the curing agent slurry premixing box is used to transport the curing agent slurry to the fluidized soil mixing box;

[0009] A feed port is arranged at the top of the fluidized soil mixing box, and a top pre-separation device, a middle soil breaking and stirring device, and a bottom vortex soil breaking and stirring device are arranged in the fluidized soil mixing box from top to bottom.

[0010] The middle soil-breaking and stirring device includes a plurality of vertically rotating second soil-breaking rollers, which rotate vertically and are circumferentially provided with a plurality of second soil-breaking and stirring blades on the outer diameter; the bottom vortex soil-breaking and stirring device includes a plurality of bottom vortex agitators rotating in the horizontal direction, and each bottom vortex agitator is provided with a bottom vortex rotating shaft and vortex blades installed on the bottom vortex rotating shaft.

[0011] Furthermore, a feeding bin is installed on the top of the feed inlet, the feeding bin is provided with an opening which is wide at the top and narrow at the bottom, and a discharge port is provided on one side of the bottom of the fluidized soil mixing box;

[0012] Removable baffles located on the top of the top pre-separation device are arranged on both sides inside the feeding bin.

[0013] Further, the top pre-separation device comprises:

[0014] A grid-like steel screen with a top pre-separator consisting of a number of inverted "V"-shaped screen bars staggered horizontally and vertically; and / or

[0015] A row of first soil-breaking rollers, with first soil-breaking blades provided on the outer diameter of the first soil-breaking rollers, the first soil-breaking blades of adjacent first soil-breaking rollers are staggered and interlocked, and the first soil-breaking blades are thin sheet-shaped or sawtooth spike-shaped blades radially installed on the outer diameter of the first soil-breaking rollers;

[0016] The speed and direction of the first breaking roller are individually adjustable.

[0017] Furthermore, the top pre-separation device includes a grid-shaped steel screen and a row of first soil-breaking rollers located below the grid-shaped steel screen, and the first soil-breaking blade can rotate to a position beyond the top surface of the grid-shaped steel screen.

[0018] Further, the first soil-breaking rollers are distributed at the same height in the fluidized soil mixing box, or

[0019] A row of first rollers of different heights are arranged in a continuous Z-shape and staggered up and down in the fluidized soil mixing box.

[0020] Furthermore, the middle soil-breaking and stirring device comprises at least one row of second soil-breaking rollers distributed along the horizontal X direction, a gap is left between the second soil-breaking and stirring blades of adjacent second soil-breaking rollers, the second soil-breaking and stirring blades are at least one layer of fan-shaped blades or wavy blades installed on the second soil-breaking rollers, and the thickness of the second soil-breaking and stirring blades is greater than the thickness of the first soil-breaking blades;

[0021] The speed and direction of each second breaking roller can be adjusted individually.

[0022] Furthermore, a circle of vortex blades extending upward and forming a bowl shape is installed on the outer diameter of the bottom vortex rotating shaft, and gaps are left between adjacent vortex blades;

[0023] At least one row of bottom vortex agitators of alternating sizes are arranged at the bottom of the fluidized soil mixing box along the X direction, and the height and width of the large bottom vortex agitator are greater than those of the small bottom vortex agitator;

[0024] The speed and direction of each bottom vortex rotating shaft are individually adjustable.

[0025] Furthermore, the manufacturing device also includes a mobile support system, which includes a mobile support system platform, rigid support legs, and rollers.

[0026] The fluidized soil mixing box and the curing agent slurry premixing box are both installed on the upper surface of the mobile support system platform. A weighing device is provided between the mobile support system platform and the fluidized soil mixing box. A plurality of rigid support legs are installed at the bottom of the mobile support system platform, and rollers are installed at the bottom of each rigid support leg.

[0027] Furthermore, the manufacturing device also includes a control system, which is connected to the weighing device, the first soil-breaking roller of the top pre-separation device, the middle soil-breaking stirring device, the bottom vortex soil-breaking stirring device, and the curing agent slurry premixing box.

[0028] A method for producing dense fluidized self-solidifying soil based on the above-mentioned production device, wherein the original soil is poured into a fluidized soil mixing box, and the original soil is sequentially processed as follows in the fluidized soil mixing box:

[0029] 1) The top pre-separation device performs pre-separation treatment on the original soil;

[0030] 2) The second soil-breaking roller and the second soil-breaking and stirring blade of the middle soil-breaking and stirring device rotate vertically to crush and stir the original soil poured into the fluidized soil mixing box;

[0031] 3) The horizontally rotating bottom vortex soil breaking and stirring device performs vortex stirring on the original soil and the curing agent slurry transported from the curing agent slurry premixing box. Under the action of the vortex stirring, the fluid soil and curing agent slurry at the bottom flow upward and are broken and stirred again by the second soil breaking roller and the second soil breaking and stirring blade.

[0032] The advantages of the present invention are:

[0033] (1) The curing agent slurry premixing device contained in the device can ensure that the special curing agent is evenly mixed and pumped into the fluidized soil mixing box as the initial slurry, thereby ensuring the subsequent uniform mixing of the fluidized soil. The curing agent slurry premixing device can be operated automatically, saving labor costs, and can also ensure the uniform distribution of the curing agent, thereby improving the quality and stability of the fluidized soil.

[0034] (2) The device is equipped with a control system that can accurately control the amount of curing agent, the weight of the original soil, and the weight of the fluidized curing soil slurry during the entire construction process, thereby ensuring the construction quality. By real-time monitoring and recording of various parameters, it is highly automated and intelligent. In addition, the control system can also warn and automatically adjust various abnormal situations, thereby ensuring stability and reliability during the construction process.

[0035] (3) The top of the device is equipped with a top pre-separation device, which can effectively reduce the strong impact of large-volume raw soil feeding on the middle soil-breaking and mixing device, thereby protecting the device from damage. The top pre-separation device isolates the middle soil-breaking and mixing device from the large-volume raw soil feeding, ensuring the stable operation of the soil-breaking and mixing device.

[0036] (4) The fluidized soil mixing box is equipped with a middle soil-breaking and stirring device and a bottom vortex soil-breaking and stirring device. These devices are designed to crush the original soil in all directions and fully mix and stir it with the curing agent slurry. The middle soil-breaking and stirring device can gradually refine the original soil until it reaches the ideal particle size. This not only improves the uniformity of the soil quality, but also facilitates subsequent construction operations. The bottom vortex soil-breaking and stirring device vortexes the formed fluidized solidified soil slurry. This stirring method can ensure the uniform mixing of the curing agent and the soil, effectively avoid the generation of precipitation, and ensure the uniformity of the slurry. In addition, the vortex soil-breaking and stirring device also has a supporting function, which can support the surrounding curing agent slurry and process fluidized soil to form a reflux, and continue to crush and stir under the action of the middle soil-breaking and stirring device, so that the original soil particles are further refined and the mixing uniformity is improved. This design enables the middle soil-breaking and stirring device to form multi-layer mixing in combination with the vortex soil-breaking and stirring device, further ensuring the stability and reliability of the construction quality.

[0037] (5) The above-mentioned device combined with the construction method simplifies the production process of fluidized solidified soil from traditional clay soil, making the operation more convenient and quick. This method also solves the problem of adding large amounts of raw soil in the traditional mixing process, reduces the waste of manpower and material resources, and improves production efficiency. By using this process, fluidized solidified soil that meets engineering needs can be produced more efficiently, providing a more reliable solution for engineering construction. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0039] Figure 1 This is a cross-sectional view of the internal structure of a device for making multi-layer filtering-stirring self-compacting fluidized self-setting soil in Embodiment 1 of the present invention;

[0040] Figure 2 This is a cross-sectional view of the internal structure of a device for making multi-layer filtering-stirring self-compacting fluidized self-setting soil in the second embodiment of the present invention;

[0041] Figure 3 This is a cross-sectional view of the internal structure of a device for making a multi-layer filtering-stirring self-compacting fluidized self-setting soil in Embodiment 3 of the present invention;

[0042] Figure 4 This is a cross-sectional view of the internal structure of a device for making a multi-layer filtering-stirring self-compacting fluidized self-setting soil in Embodiment 4 of the present invention;

[0043] Figure 5 This is an external structural diagram of a device for making a multi-layer filtering-stirring self-compacting fluidized self-setting soil in Embodiment 4 of the present invention;

[0044] Figure 6 This is an external structural diagram of a device for making a multi-layer filtering-stirring self-compacting fluidized self-setting soil in Embodiment 5 of the present invention;

[0045] Figure 7 This is a cross-sectional view of the internal structure of a device for making a multi-layer filtering-stirring self-compacting fluidized self-setting soil in Embodiment 5 of the present invention;

[0046] Figure 8 This is a cross-sectional view of the internal structure of a device for making a multi-layer filtering-stirring self-compacting fluidized self-setting soil in Embodiment 6 of the present invention;

[0047] Fig. 9 This is a cross-sectional view of the internal structure of a device for making a multi-layer filtering-stirring self-compacting fluidized self-setting soil in Embodiment 7 of the present invention;

[0048] Fig.10 This is a cross-sectional view of the internal structure of a device for making multi-layer filtration-stirring self-compacting fluidized self-setting soil in Example 8 of the present invention. DETAILED DESCRIPTION

[0049] In the following description, a large number of specific details are provided to provide a more thorough understanding of the present invention. However, it is apparent to those skilled in the art that the present invention can be implemented without one or more of these details. In other examples, in order to avoid confusion with the present invention, some technical features well known in the art are not described.

[0050] In order to fully understand the present invention, detailed steps and detailed structures will be proposed in the following description to illustrate the technical solution of the present invention. The preferred embodiments of the present invention are described in detail below, but in addition to these detailed descriptions, the present invention may also have other implementations.

[0051] Embodiment 1

[0052] The embodiment of the present invention specifically relates to a self-compacting fluidized self-setting soil manufacturing device and a construction method thereof, such as Figure 1 As shown, the production device mainly includes a feeding bin 1, a fluidized soil mixing box 2, a top pre-separation device 3, a middle soil breaking and stirring device 4, a bottom vortex soil breaking and stirring device 10, a curing agent slurry premixing box 6, a control system, and a mobile support system 8.

[0053] The feeding bin 1 is generally made of steel plate and is located on the upper part of the top pre-separation device 3. The four sides must be appropriately retracted along the upper opening of the fluidized soil mixing box 2. Its main function is to prevent the original soil from being scattered and the slurry from being thrown out during the fluidized soil mixing process.

[0054] The fluidized soil mixing box 2 is the main space for the production and storage of fluidized soil. A top pre-separation device 3, a middle soil breaking and stirring device 4 and a bottom vortex soil breaking and stirring device 10 are installed in sequence from top to bottom. A discharge port 2.1 is installed on one side of the bottom of the fluidized soil mixing box 2. After the fluidized soil is produced, it is pumped out through the discharge port 2.1.

[0055] In this embodiment, the top pre-separation device 3 is a steel grating composed of several transverse steel gratings 3.1 and longitudinal steel gratings 3.2. In order to facilitate the smooth entry of the original soil, the cross-section of the transverse steel gratings 3.1 and the longitudinal steel gratings 3.2 is an inverted "V" shape. The main function of the top pre-separation device 3 is to temporarily store the raw soil for feeding, so that the middle soil-breaking and stirring device 4 can gradually divide the raw soil into small pieces, which is convenient for subsequent further mixing and crushing while avoiding the impact and damage of a large amount of raw soil on the middle soil-breaking and stirring device 4.

[0056] The middle soil breaking and stirring device 4 includes a plurality of second soil breaking rollers 4.2 arranged in parallel along the X direction, and a circle of second soil breaking blades 4.1 are installed on the outer diameter of each second soil breaking roller 4.2. Each second soil breaking roller 4.2 rotates vertically to drive the second soil breaking blades 4.1 to rotate and break the original soil. The second soil breaking blades 4.1 can be thick multi-layered fan-shaped blades or wavy blades.

[0057] The bottom vortex soil breaking and stirring device 10 includes a plurality of bottom vortex agitators arranged in parallel along the X direction, and the bottom vortex agitator is composed of a bottom vortex rotating shaft 10.2 and a vortex blade 10.1. The bottom vortex rotating shaft 10.2 rotates horizontally to drive the vertical vortex blade 10.1 to rotate, and the small soil blocks entering the curing agent slurry or process fluid soil are crushed and stirred at a secondary level. At the same time, the vortex blade 10.1 can support the surrounding curing agent slurry or process fluid soil to form a reflux, and form a multi-layer stirring in combination with the middle soil breaking and stirring device 4, which can avoid precipitation and ensure the uniformity of the slurry.

[0058] A circle of vortex blades 10.1 extending upward and forming a bowl shape is installed on the outer diameter of the bottom vortex rotating shaft 10.2. When the bottom vortex rotating shaft 10.2 drives the vortex blades 10.1 to rotate, a vortex is formed inside the vortex blades 10.1, which is helpful for crushing the original soil and fully mixing the original soil with the curing agent slurry. It is best to leave gaps between adjacent vortex blades 10.1 to facilitate the flow of the original soil-curing agent slurry mixture in the inner and outer areas of the vortex blades 10.1, thereby improving the uniformity of mixing.

[0059] In specific applications, the speed and direction of each second breaking roller 4.2 and each bottom vortex rotating shaft 10.2 are independently adjustable, so that more refined crushing and mixing operations can be achieved.

[0060] The curing agent slurry premixing box 6 is located outside the fluidized soil mixing box 2 and is used for premixing the special curing agent. The stirred curing agent slurry is pumped into the fluidized soil mixing box 2 as the initial slurry, so as to achieve the precise and uniform control of the fluidized soil production process to the greatest extent.

[0061] The mobile support system 8 is used for the mobile transportation of the whole equipment, and rollers 8.3 are installed under the mobile support system platform 8.1. In order to ensure the accuracy and effectiveness of the control system, rigid support legs 8.2 can be provided on the chassis, and the rigid support legs 8.2 bear the whole weight during the fluidized soil production process. A weighing device for weighing the fluidized soil mixing box 2 is installed on the mobile support system platform 8.1.

[0062] The control system can perform timely metering calculations through real-time mass weighing, thereby achieving precise control of the raw soil and curing agent slurry ratio in the process of fluidized soil production.

[0063] The specific implementation process of grouting in this embodiment is as follows:

[0064] (1) Before production, first measure or determine the properties of the original soil used for fluidized soil production, and complete the determination of its moisture content.

[0065] (2) The laboratory completes the preparation of special curing agents, trial preparation and testing of fluidized soil.

[0066] (3) After the fluidized soil is solidified, the various indicators meet the design expectations, the special curing agent formula is determined, and the production is arranged. During the process, the curing agent dosage, water-cement ratio and other construction parameters are determined.

[0067] (4) Adjust the mobile support system 8 to a suitable position and stabilize the entire equipment.

[0068] (5) The curing agent slurry is mixed as required in the curing agent slurry premixing box 6.

[0069] (6) Inject the curing agent slurry into the fluidized soil mixing box 2 as needed, turn on the control system, and the middle soil breaking and stirring device 4 and the bottom vortex soil breaking and stirring device 10 start to operate.

[0070] (7) The loader / excavator etc. feeds the raw soil through the feeding bin 1, and the raw soil is initially separated by the steel grid. The second breaking blade 4.1 of the middle breaking and stirring device 4 continuously breaks the raw soil into small pieces.

[0071] (8) The crushed original soil that falls into the initial curing agent slurry is crushed, stirred and lifted by the bottom vortex breaking and stirring device 10, and works together with the middle breaking and stirring device 4 to mix the fluidized soil.

[0072] (9) With the continuous addition of raw soil, the middle soil breaking and stirring device 4 and the bottom vortex soil breaking and stirring device 10 form vertical and horizontal effects, and realize all-round three-dimensional crushing and stirring of the raw soil in the fluidized soil mixing box 2, thereby ensuring the uniformity of the fluidized soil mixing.

[0073] (10) During the process, according to the actual amount of raw soil added, the control system 7 timely replenishes the curing agent slurry as needed to ensure that all indicators of the fluidized soil meet the design requirements.

[0074] (11) After the fluidized soil is produced, it is pumped out through the discharge port 2.1 and used as a construction material for external discharge, pouring, etc.

[0075] Embodiment 2

[0076] like Figure 2 As shown, the difference between this embodiment and the first embodiment is that:

[0077] (1) The bottom vortex breaking soil stirring device 10 is set to different sizes (the height and width of the large bottom vortex agitator are larger than the small bottom vortex agitator), for example, it can be set in a large-small-large-small manner, or it can be appropriately adjusted according to actual conditions. The stirring difference formed by the vortex breaking soil stirring devices of different sizes will enhance the stirring effect of the bottom process fluidized soil, and at the same time, it can further enhance the fluidity of the original soil-curing agent slurry mixture in the fluidized soil mixing box 2.

[0078] (2) In actual implementation, the rotation direction of the bottom vortex rotation axis 10.1 is adjustable, which further enhances the stirring effect of the bottom process fluid soil.

[0079] (3) In the actual implementation process, the rotation speed of the bottom vortex rotating shaft 10.1 is adjustable to further enhance the stirring effect of the bottom process fluidized soil. At the same time, the rotation speed of some bottom vortex rotating shafts 10.1 can be set higher than that of other bottom vortex rotating shafts 10.1, thereby further enhancing the fluidity of the original soil-curing agent slurry mixture in the fluidized soil mixing box 2.

[0080] Embodiment 3

[0081] like Figure 3 As shown, the difference between this embodiment and the second embodiment is that:

[0082] A row of second soil breaking rollers 4.2 of the middle soil breaking and stirring device 4 are arranged in a continuous Z-shape in an up-and-down staggered manner in the fluidized soil mixing box 2, so that the second soil breaking blades 4.1 are arranged in an up-and-down staggered manner. The up-and-down staggered arrangement can more effectively break the original soil on the upper part and fully break the fluidized soil.

[0083] Embodiment 4

[0084] like Figure 4-5 As shown, the difference between this embodiment and the first embodiment is that:

[0085] In this embodiment, the top pre-separation device 3 cancels the steel grid composed of several transverse steel grid bars 3.1 and longitudinal steel grid bars 3.2, and is replaced by a row of vertically rotating first soil-breaking rollers 3.4, and the first soil-breaking blades 3.3 are arranged on the outer diameter of the first soil-breaking rollers 3.4. Preferably, the first soil-breaking blades 3.3 on adjacent first soil-breaking rollers 3.4 are closely arranged and interlocked, ensuring that the raw soil is cut and broken into small pieces in small doses and uninterruptedly, so as to achieve pretreatment of the raw soil.

[0086] In this embodiment, the first earth-breaking blade 3.3 mainly functions as crushing, so a thin sheet blade or a sawtooth spike blade can be selected. The second earth-breaking blade 4.1 has a stirring function in addition to crushing, so the second earth-breaking blade 4.1 can be a thick multi-layered fan blade or a wavy blade.

[0087] The rotation speed and direction of each first breaking roller 3.4 are individually adjustable.

[0088] Embodiment 5

[0089] like Figure 6-Figure 7 As shown, the difference between this embodiment and the fourth embodiment is that:

[0090] In this embodiment, the top pre-separation device 3 is composed of two parts, namely, an upper steel grid and a row of first soil-breaking rollers 3.4 at the lower part. The top of the first soil-breaking blade 3.3 on the first soil-breaking roller 3.4 is higher than the top surface of the steel grid, ensuring that the raw soil is cut and broken into small pieces in small doses and uninterruptedly, thereby realizing the refined pretreatment of the raw soil.

[0091] The middle soil breaking and stirring device 4 cooperates with the top pre-separation device 3 and the bottom vortex soil breaking and stirring device 10 to further stir the formed process fluidized soil slurry.

[0092] In a specific application, the rotation speed and direction of each first breaking roller 3.4, the second breaking roller 4.2 and each bottom vortex rotating shaft 10.2 are independently adjustable, so that more refined crushing and mixing operations can be achieved.

[0093] The specific implementation process of grouting in this embodiment is as follows:

[0094] (1) Before production, first measure or determine the properties of the original soil used for fluidized soil production, and complete the determination of its moisture content.

[0095] (2) The laboratory completes the preparation of special curing agents, trial preparation and testing of fluidized soil.

[0096] (3) After the fluidized soil is solidified, the various indicators meet the design expectations, the special curing agent formula is determined, and the production is arranged. During the process, the curing agent dosage, water-cement ratio and other construction parameters are determined.

[0097] (4) Adjust the mobile support system 8 to a suitable position and stabilize the entire equipment.

[0098] (5) The curing agent slurry is mixed as required in the curing agent slurry premixing box 6.

[0099] (6) Inject the curing agent slurry into the fluidized soil mixing box 2 as needed, start the control system 7, and the first soil-breaking roller 3.4, the middle soil-breaking stirring device 4, and the bottom vortex soil-breaking stirring device 10 start to operate.

[0100] (7) The loader / excavator feeds the raw soil through the feeding bin 1, and the first soil-breaking blade 3.3 of the top pre-separation device 3 can rotate to a position beyond the top surface of the steel grid, ensuring that the raw soil is continuously broken into small pieces as needed under the action of the top pre-separation device 3.

[0101] (8) The primary crushed original soil passes through the middle soil breaking and stirring device 4, under the action of which, it is further crushed and stirred.

[0102] (9) The crushed original soil that falls into the initial curing agent slurry is crushed, stirred and lifted by the bottom vortex breaking and stirring device 10, and works together with the middle breaking and stirring device 4 to mix the fluidized soil.

[0103] (10) With the continuous addition of raw soil, the middle soil breaking and stirring device 4 and the bottom vortex soil breaking and stirring device 10 form vertical and horizontal effects, and realize all-round three-dimensional crushing and stirring of the raw soil in the fluidized soil mixing box 2, thereby ensuring the uniformity of the fluidized soil mixing.

[0104] (11) During the process, according to the actual amount of raw soil added, the control system 7 timely replenishes the curing agent slurry as needed to ensure that all indicators of the fluidized soil meet the design requirements.

[0105] (12) After the fluidized soil is produced, it is pumped out through the discharge port 2.1 and used as a construction material for external discharge, pouring, etc.

[0106] Embodiment 6

[0107] like Figure 8 As shown, as the sixth embodiment of the present invention, it is similar to the fifth embodiment, and the difference from the fifth embodiment is that the middle soil-breaking and stirring device 4 is provided with an upper and lower second soil-breaking roller 4.2, which cooperates with the middle soil-breaking and stirring device 4 and the bottom vortex soil-breaking and stirring device 10, and four layers of soil-breaking and stirring equipment are distributed in the vertical space of the fluidized soil mixing box 2, which can be used for finer crushing of the original soil and improve the stirring effect at the same time.

[0108] During actual operation, the first breaking soil roller 3.4 and / or the second breaking soil roller 4.2 can rotate both clockwise and counterclockwise to perform breaking soil and mixing operations in multiple directions and in a full cycle.

[0109] In order to achieve a reasonable and effective soil-breaking and mixing effect, the number of layers and the number of the first soil-breaking roller 3.4, the second soil-breaking roller 4.2 and the number of rotating shafts 10.2 of the bottom vortex soil-breaking and mixing device are not fixed, and can be rationally selected according to actual soil-breaking requirements (soil type, soil amount, etc.).

[0110] Embodiment 7

[0111] like Fig. 9 As shown, the seventh embodiment of the present invention is similar to the sixth embodiment, but different from the sixth embodiment in that:

[0112] (1) The bottom vortex breaking soil stirring device 10 is set to different sizes (the height and width of the large bottom vortex agitator are larger than the small bottom vortex agitator), for example, it can be set in a large-small-large-small manner, or it can be appropriately adjusted according to actual conditions. The stirring difference formed by the vortex breaking soil stirring devices of different sizes will enhance the stirring effect of the bottom process fluidized soil, and at the same time, it can further enhance the fluidity of the original soil-curing agent slurry mixture in the fluidized soil mixing box 2.

[0113] (2) In actual implementation, the rotation direction of the bottom vortex rotation axis 10.1 is adjustable, which further enhances the stirring effect of the bottom process fluid soil.

[0114] (3) In the actual implementation process, the rotation speed of the bottom vortex rotating shaft 10.1 is adjustable to further enhance the stirring effect of the bottom process fluidized soil. At the same time, the rotation speed of some bottom vortex rotating shafts 10.1 can be set higher than that of other bottom vortex rotating shafts 10.1, thereby further enhancing the fluidity of the original soil-curing agent slurry mixture in the fluidized soil mixing box 2.

[0115] Embodiment 8

[0116] like Fig.10 As shown, the eighth embodiment of the present invention is similar to the seventh embodiment, and is different from the third embodiment in that:

[0117] A row of first soil-breaking rollers 3.4 are staggered in a continuous Z shape in the fluidized soil mixing box 2, so that the first soil-breaking blades 3.3 are arranged in an up-and-down staggered manner and interlock with each other. The up-and-down staggered arrangement can more effectively crush the original soil on the upper part, and cooperate with the middle soil-breaking mixing device 4 to fully crush the fluidized soil.

[0118] The above describes the preferred embodiments of the present invention. It should be understood that the present invention is not limited to the above-mentioned specific embodiments, and the devices and structures that are not described in detail should be understood to be implemented in a common manner in the art; any technician familiar with the art can use the above-disclosed methods and technical contents to make many possible changes and modifications to the technical solutions of the present invention without departing from the scope of the technical solutions of the present invention, or modify them into equivalent embodiments of equivalent changes, which does not affect the essential content of the present invention. Therefore, any simple modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solutions of the present invention are still within the scope of protection of the technical solutions of the present invention.

Claims

1. A multi-layer crushing-mixing self-compacting fluidized self-setting soil making device, characterized in that: The self-compacting fluidized self-setting soil manufacturing device comprises a fluidized soil mixing box (2) and a curing agent slurry premixing box (6) connected to the fluidized soil mixing box (2), wherein the curing agent slurry premixing box (6) is used to transport the curing agent slurry to the fluidized soil mixing box (2); The fluidized soil mixing box (2) is provided with a feed inlet at the top, and a top pre-separation device (3), a middle soil breaking and stirring device (4), and a bottom vortex soil breaking and stirring device (10) are sequentially provided in the fluidized soil mixing box (2) from top to bottom; The middle soil-breaking and stirring device (4) comprises a plurality of second soil-breaking rollers (4.2) that rotate vertically, the second soil-breaking rollers (4.2) rotate vertically and are provided with a plurality of second soil-breaking and stirring blades (4.1) along the circumferential direction of the outer diameter, and the bottom vortex soil-breaking and stirring device (10) comprises a plurality of bottom vortex agitators that rotate horizontally, each of the bottom vortex agitators being provided with a bottom vortex rotating shaft (10.2) and a vortex blade (10.1) mounted on the bottom vortex rotating shaft (10.2).

2. A multi-layer crushing-mixing self-compacting fluidized self-setting soil making device as claimed in claim 1, characterized in that: A feeding bin (1) is installed on the top of the feed inlet, and the feeding bin (1) is provided with an opening which is wide at the top and narrow at the bottom; a discharge port (2.1) is provided on one side of the bottom of the fluidized soil mixing box (2); Removable baffles (9) located at the top of the top pre-separation device (3) are provided on both sides of the inside of the feeding bin (1).

3. A multi-layer crushing-mixing self-compacting fluidized self-setting soil manufacturing device as claimed in claim 1, characterized in that: The top pre-separation device (3) comprises: A grid-like steel screen, wherein the top pre-separation device (3) is composed of a plurality of inverted "V"-shaped screen bars staggered horizontally and vertically; and / or A row of first soil-breaking rollers (3.4), wherein first soil-breaking blades (3.3) are arranged on the outer diameter of the first soil-breaking rollers (3.4), and the first soil-breaking blades (3.3) of adjacent first soil-breaking rollers (3.4) are staggered and interlocked, and the first soil-breaking blades (3.3) are thin sheet-shaped or sawtooth spike-shaped blades radially installed on the outer diameter of the first soil-breaking rollers (3.4); The rotation speed and direction of the first breaking roller (3.4) are both independently adjustable.

4. A multi-layer crushing-mixing self-compacting fluidized self-setting soil manufacturing device as claimed in claim 3, characterized in that: The top pre-separation device (3) comprises a grid-shaped steel screen and a row of first soil-breaking rollers located below the grid-shaped steel screen, and the first soil-breaking blade (3.3) can rotate to a position beyond the top surface of the grid-shaped steel screen.

5. A multi-layer crushing-mixing self-compacting fluidized self-setting soil manufacturing device as claimed in claim 3, characterized in that: The first soil-breaking rollers (3.4) are distributed at the same height in the fluidized soil mixing box (2), or A row of the first rollers (3.4) of different heights are distributed in a continuous Z-shape in an up-and-down staggered manner in the fluidized soil mixing box (2).

6. A multi-layer crushing-mixing self-compacting fluidized self-setting soil manufacturing device as claimed in claim 3, characterized in that: The middle soil-breaking and stirring device (4) comprises at least one row of second soil-breaking rollers (4.2) distributed along the horizontal X direction, a gap is left between the second soil-breaking and stirring blades (4.1) of adjacent second soil-breaking rollers (4.2), the second soil-breaking and stirring blades (4.1) are at least one layer of fan-shaped blades or wavy blades installed on the second soil-breaking rollers (4.2), and the thickness of the second soil-breaking and stirring blades (4.1) is greater than the thickness of the first soil-breaking blades (3.3); The rotation speed and direction of each of the second breaking rollers (4.2) are individually adjustable.

7. A multi-layer crushing-mixing self-compacting fluidized self-setting soil manufacturing device as claimed in claim 1, characterized in that: A circle of vortex blades (10.1) extending upward and forming a bowl shape is installed on the outer diameter of the bottom vortex rotating shaft (10.2), and gaps are left between adjacent vortex blades (10.1); The bottom of the fluidized soil mixing box (2) is provided with at least one row of bottom vortex agitators of different sizes distributed alternately along the X direction, and the height and width of the large bottom vortex agitators are greater than those of the small bottom vortex agitators; The rotation speed and direction of each bottom vortex rotating shaft (10.2) are independently adjustable.

8. A multi-layer crushing-mixing self-compacting fluidized self-setting soil manufacturing device as claimed in claim 6, characterized in that: The manufacturing device further comprises a mobile support system (8), wherein the mobile support system (8) comprises a mobile support system platform (8.1), rigid support legs (8.2), and rollers (8.3). The fluidized soil mixing box (2) and the curing agent slurry premixing box (6) are both installed on the upper surface of the mobile support system platform (8.1), a weighing device is provided between the mobile support system platform (8.1) and the fluidized soil mixing box (2), a plurality of rigid support legs (8.2) are installed at the bottom of the mobile support system platform (8.1), and a roller (8.3) is installed at the bottom of each rigid support leg (8.2).

9. A multi-layer crushing-mixing self-compacting fluidized self-setting soil manufacturing device as claimed in claim 8, characterized in that: The manufacturing device also includes a control system (7), and the control system (7) is connected to the weighing device, the first soil-breaking roller (3.4) of the top pre-separation device (3), the middle soil-breaking stirring device (4), the bottom vortex soil-breaking stirring device (10), and the curing agent slurry premixing box (6).

10. A method for producing dense fluid self-setting soil based on the production device according to any one of claims 1 to 9, characterized in that: The original soil is poured into the fluidized soil mixing box (2), and the original soil is sequentially processed as follows in the fluidized soil mixing box (2): 1) The top pre-separation device (3) performs pre-separation treatment on the original soil; 2) The second soil-breaking roller (4.2) and the second soil-breaking and stirring blade (4.1) of the middle soil-breaking and stirring device (4) rotate vertically to crush and stir the original soil poured into the fluidized soil mixing box (2); 3) The horizontally rotating bottom vortex soil breaking and stirring device (10) performs vortex stirring on the original soil and the curing agent slurry delivered by the curing agent slurry premixing box (6), and under the action of the vortex stirring, the fluid soil and curing agent slurry at the bottom flow upward and are broken and stirred again by the second soil breaking roller (4.2) and the second soil breaking and stirring blade (4.1).

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