Flow state solidified soil breakage-free semi-contact grading mixer and mobile mixing equipment

Abstract

The present disclosure relates to a flow state solidified soil non-breaking semi-contact grading mixer, characterized in comprising: a tank body (10) defining a mixing space, the tank body (10) having a vertical center axis; a mixing blade (30) arranged in the tank body (10) along the vertical center axis for mixing a fluid in the mixing space, the mixing blade (30) having a rotating speed capable of causing the fluid to form a circulating vortex around the vertical center axis, the mixing blade (30) being configured such that, in a cross section where the mixing blade is located, the mixing space in the tank body (10) comprises: 1) a first material dropping area covering a rotating radius of the mixing blade (30); and 2) a second material dropping area located outside the first material dropping area; and a guiding device guiding a predetermined size of large pieces of material in a material being dropped to fall via the second material dropping area. The present disclosure can improve the mixing efficiency and improve the mixing effect of the flow state solidified soil.

Description

TECHNICAL FIELD

[0001] The present disclosure relates to the technical field of flow state solidified soil mixing equipment, and relates to a flow state solidified soil crushing-free semi-contact grading mixer and a mobile mixing equipment. BACKGROUND

[0002] Flow state solidified soil refers to that, according to engineering needs and geotechnical characteristics, local solid waste (for example, construction site construction waste) is used to take soil on site, mixed with water to form mud, and cement and special solidifying agent and additive are added, and after mixing, a flowable mixture is formed, and finally through pouring and curing, a new geotechnical engineering material with certain strength, water stability and low permeability is formed. The strength of the flow state solidified soil after solidification can reach C10 grade concrete or even higher. As a new type of building material, the flow state solidified soil is equivalent to a certain form of concrete. Due to its large flowability, the flow state solidified soil has good construction convenience and can be constructed by pumping and other methods, and is suitable for backfill pouring of various foundation pits, foundation trenches and mine pits, and can also be widely used in the field of reinforcement treatment of roadbeds and building foundations.

[0003] The emergence of flow state solidified soil technology is a relatively big progress in the application of construction waste. The local construction waste at the construction site does not need to be taken away as garbage, but can be directly used to solve the problem of turning waste into treasure.

[0004] In the existing flow state solidified soil treatment, the common mixer cannot be directly used for stirring treatment. Because the construction waste itself is construction garbage, various solid garbage particles such as stones, bricks and cement blocks exist in it. These solid garbage particles are different from soil and have large size, mass and hardness. If the common mixer is directly used for stirring, the stirring knife may be damaged or stuck once it encounters large block materials, and maintenance is required. Therefore, in the existing flow state solidified soil processing technology, the construction waste is generally first subjected to screening treatment, for example, the stones and other large block materials are removed by screening the construction waste by using a vibrating screen, and then the screened soil is put into the mixer for stirring. Another method is to directly use a crusher to crush the stones and other large block materials, and then to stir.

[0005] Whether to increase screening or crushing treatment, the cost is increased, and the efficiency cannot keep up. More importantly, it is often difficult for the construction site to provide sufficient installation space and operation space to arrange the related equipment and perform screening or crushing operation.

[0006] In addition, the most commonly used mixer at present is a horizontal mixer, i.e., a mixer currently used to mix cement concrete. The horizontal mixer has a mixing tank body and a horizontally arranged mixing shaft located in the mixing tank body. Mixing blades are installed on the mixing shaft and arranged along the inner wall of the mixing tank body, and the mixing blades collide with the soil and make the soil collide with each other, thereby achieving uniform mixing. Therefore, the existing horizontal mixer belongs to forced mixing driven by direct contact of the mixing blades with the slurry from the mixing principle. In order to achieve thorough mixing as much as possible, the mixing blades need to be arranged as much as possible in the entire length of the tank body cavity in the axial direction, and as close as possible to the inner wall of the tank body in the radial direction. Such an arrangement has high requirements for the particle size of the soil, and once large pieces of material are mixed in, it is extremely likely that the mixing blades will be stuck or damaged, causing downtime.

[0007] In addition, Chinese patent document CN115489027 discloses a flow state solidified soil vertical shaft vibration mixer and a mixing method. The mixer includes a mixing pot, a mixing motor, a mixing shaft, a mixing paddle, a vibration driving motor, a central vibrator, an attached vibrator, and a shock-absorbing support platform. The mixing pot is a connected double-cylinder structure, and each of the two cylinders has a mixing shaft arranged therein. The mixing paddle is a double-screw belt screw type mixing paddle. The lower end of the double-screw belt screw type mixing paddle is close to the bottom of the mixing pot 1, and the upper end extends upward along the mixing shaft in a spiral shape to span the slurry, with a diameter slightly smaller than the diameter of the cylinder of the mixing pot 1. The central vibrator is arranged between the two mixing shafts. During mixing, the materials such as soil, water, and solidifying agent are delivered into the mixing pot in different proportions and at different times for vibration mixing. During the mixing process, the flow state solidified soil slurry is not only subjected to horizontal circular motion under the forced mixing action of the screw belt and screw rod of the mixing paddle, but also forms an up-and-down circulating flow during the mixing process. The slurry far from the mixing shaft is lifted to a high place by the screw belt, while the slurry close to the mixing shaft is pressed to the bottom by the screw rod, so that the mixing is more thorough. The central vibrator applies a certain intensity of vibration to the flow state solidified soil slurry around it during mixing. In this way, the cement or other solidifying agent and the soil are continuously subjected to forced mixing and high-frequency vibration at the same time, and are in a state of flutter, which enhances the dispersion of the powder and the soil and further improves the uniformity and stability of the solidified soil mixture. In this way, the flow state solidified soil mixed by the double action of forced mixing and vibration strengthening is discharged from the discharge port.

[0008] The vertical shaft stirring and vibrating machine for fluidized solidified soil realizes the up and down circulating flow of the solidified soil through the forced stirring of the screw, has better stirring effect compared to the traditional horizontal stirring machine, but still belongs to the forced stirring of driving the slurry through the direct contact of the stirring blade in terms of the stirring principle. Therefore, in order to realize the thorough stirring as much as possible, the stirring blade (double-screw stirring paddle) of the vertical shaft stirring and vibrating machine still needs to be arranged in the entire length of the slurry height in the cavity of the tank body in the axial direction as much as possible, and needs to be as close to the inner wall of the tank body in the radial direction as possible. Therefore, the vertical shaft stirring and vibrating machine, like the common horizontal stirring machine, also has high requirements for the particle size of the sludge, and once large pieces of material are mixed in, it is extremely likely that the stirring blade will be stuck or damaged, causing downtime.

[0009] Moreover, the stirring speed of the existing stirring machines is usually dozens of revolutions per minute (rpm), and the slurry in the tank body is only driven to rotate by the direct contact with the stirring blade, so the stirring efficiency is low and the stirring effect needs to be further improved. SUMMARY

[0010] The present disclosure is directed to the above-mentioned deficiencies in the prior art, and provides a fluidized solidified soil non-breaking semi-contacting staged stirring machine and mobile stirring equipment capable of improving stirring efficiency and stirring effect.

[0011] To achieve the above-mentioned purpose, the present disclosure provides the following technical solutions:

[0012] A fluidized solidified soil non-breaking semi-contacting staged stirring machine, characterized in that it comprises: a tank body defining a stirring space, the tank body having a vertical central axis; a stirring blade arranged in the tank body along the vertical central axis for stirring the fluid in the stirring space, the stirring blade having a rotating speed capable of causing the fluid to form a circulating vortex around the vertical central axis, the stirring blade being configured such that, in the cross section where the stirring blade is located, the stirring space in the tank body comprises: 1) a first material falling area covering the rotating radius of the stirring blade; and 2) a second material falling area located outside the first material falling area; and a guiding device guiding the large pieces of material of a predetermined size in the material to be put down through the second material falling area.

[0013] In the present disclosure, since the stirring blade adopts vertical stirring and is located at the lower part of the stirring space, and the rotating speed of the stirring blade can make the slurry fluid form a circulating vortex, and the guide device guides the large block material to fall through the second material falling area, the following effects are achieved: 1) while the direct contact of the cutter and the forced stirring, the vortex wrapping and scouring effect can further strip and scatter the soil in the material, so as to form uniform slurry and granular aggregate, thus realizing the organic combination of the forced stirring based on the direct contact of the cutter and the vortex indirect stirring based on the high-speed wrapping and scouring of the vortex, and achieving higher stirring efficiency and better stirring effect; 2) the large block material falls from the second material falling area under the guidance of the guide device (for example, the stirring blade protection cover 40), so that the stirring blade 30 can be protected from being damaged due to collision with the large block material; 3) since the large block material of a predetermined size does not directly contact the cutter, but is stripped of soil by vortex scouring, while the small block material collides with each other under the wrapping of the vortex, and in addition to the collision with the cutter (although the collision between the material and the cutter is reduced due to the wrapping of the high-speed vortex, but still occurs), so that the material does not need to be artificially distinguished when it is put in, and the semi-contact classification stirring based on the size of the material is naturally realized by the configuration of the machine, so that pre-screening and crushing are not required before stirring, and the working effect is further improved; 4) since the collision between the material and the cutter is reduced due to the wrapping of the high-speed vortex, the high-speed vortex itself also protects the cutter; 5) the large block material remains in the slurry after being stripped of soil and is directly used as aggregate, which can improve the compressive strength of the building material after pouring.

[0014] In one embodiment, the guide device comprises a stirring blade protection cover arranged above the stirring blade, guiding the large block material in the material falling from above towards the second material falling area, while allowing the vortex and other materials wrapped thereby to pass through the stirring blade protection cover.

[0015] In this embodiment, the stirring blade protection cover protects the stirring blade from damage while allowing the vortex to wrap the small particle materials to pass through to be fully stripped and dispersed with the vortex, and further promote the dispersion of the materials by collision with these materials, so that the flow state of the soil stabilized by stirring is more uniform.

[0016] In one embodiment, the tank body comprises a cylindrical tank cylinder segment and a conical tank bottom segment at the bottom of the cylindrical tank cylinder segment.

[0017] In this embodiment, through the cylindrical tank cylinder segment and the conical tank bottom segment, on the one hand, the formation of the stirring vortex is promoted, and on the other hand, the large block material is facilitated to slide and remain at the bottom of the tank.

[0018] In one embodiment, the stirring blade is arranged at the lower part of the cylindrical tank section, and the tank body and the stirring blade are configured so that the stirring space in the tank body also includes: 3) a bulk material accommodating space located below the stirring blade and between the conical tank bottom section.

[0019] In this embodiment, since a space for accommodating large pieces of material is provided, the large pieces of material falling to the bottom of the tank are prevented from colliding with the stirring blades.

[0020] In one embodiment, the fluidized solidified soil crushing-free semi-contact grading mixer further includes: a discharge ditch, which is arranged at the bottom of the tank body and extends downward from the bottom wall of the tank body, and the discharge ditch is configured to accommodate the bulk material.

[0021] In this embodiment, the discharge groove can accommodate and retain large pieces of material, preventing the large pieces of material from being carried away by the fluid, thereby further preventing the large pieces of material from colliding with and damaging the mixing blade.

[0022] In one embodiment, the discharge groove extends radially outward on the bottom wall of the tank body, and includes: two discharge groove side walls; and a discharge groove bottom wall connected to the bottom of the two discharge groove side walls and extending radially outward and downward.

[0023] In this embodiment, since the discharge ditch itself is the discharge channel for the fluidized solidified soil after mixing, the large aggregates formed after the large blocks of material are stripped of the soil can be directly discharged together with other small aggregates through the discharge ditch extending downwardly and conveniently as the reinforcing aggregates of the solidified building structure during the discharge process without the need for manual sorting.

[0024] In one embodiment, the fluidized solidified soil crushing-free semi-contact grading mixer also includes a discharge gate, which includes: a discharge gate drive cylinder, the upper end of which is fixedly mounted on the outer surface of the tank body; and a discharge gate body, the upper end of which is pivotally mounted on the outer surface of the tank body, and the middle or lower end is connected to the lower end of the discharge gate drive cylinder to seal or open the discharge end opening of the discharge ditch through the drive of the discharge gate drive cylinder.

[0025] In this embodiment, by setting the discharge door body to be pivotally mounted at the upper end and using a drive cylinder to control the closed or open state of the discharge door body, the discharged fluidized solidified soil can be prevented from flowing downward onto the pivot shaft, and sufficient actuating force can be provided, thereby ensuring reliable operation of the discharge door.

[0026] In one embodiment, the stirring blade protective cover includes: a top protection section located above the stirring blade; and a side protection section extending downward from the top protection section to a height position that is the same as or lower than the stirring blade.

[0027] In this embodiment, the stirring blade protection cover not only protects the stirring blade from being damaged by the collision of large pieces of material from above, but also protects the stirring blade from being damaged by the collision of large pieces of material from the radial outer side.

[0028] In one embodiment, the top protection section extends horizontally in a radially outward direction or at a first inclined angle relative to the horizontal direction; and the side protection section extends in a radially outward direction at a second inclined angle relative to the horizontal direction, wherein the first inclined angle is smaller than the second inclined angle.

[0029] In this embodiment, the top protection section of the stirring blade protection cover is arranged horizontally or at a small inclined angle, so that a smaller overall distance from the stirring blade can be maintained, ensuring that the agitated vortex fluid passes at high speed, avoiding a large impact on the vortex form and speed in the tank body, thereby achieving better stirring effect. At the same time, such configuration of the top protection section and the side protection section is also conducive to the quick stripping of the soil carried by the large pieces of material, and the large pieces of material that have lost weight after stripping the soil can be washed away from the original position by the high-speed vortex and guided by the side protection section with a larger inclined angle to the second material falling area for falling.

[0030] In one embodiment, the stirring blade protection cover comprises: a plurality of radial protection ribs extending in the radial direction of the stirring blade protection cover; a plurality of circumferential protection ribs extending in the circumferential direction of the stirring blade protection cover; and a plurality of vortex channels formed between the radial protection ribs and the circumferential protection ribs, wherein at least a portion of the radial protection ribs and / or the circumferential protection ribs are made of a profile with a rectangular cross section, and the long side of the rectangular cross section of the profile is arranged in the vertical direction.

[0031] In this embodiment: the stirring blade protection cover is formed as a frame structure as a whole, and a large opening vortex channel can be obtained to ensure that the mixer performs vortex stirring. In addition, the arrangement direction of the profile cross section of the circumferential and radial protection ribs can obtain multiple effects, 1) to facilitate obtaining a large opening vortex channel, 2) to ensure the protection strength of the large pieces of material falling from above, and 3) the side surface of the rib where the long side of the profile cross section is located can fully block and collide with the small pieces of material wrapped in the vortex to promote the scouring and stripping of the soil on the surface of the material by the vortex.

[0032] In one embodiment, the flowable solidified soil non-breaking semi-contacting staged mixer further comprises a mixing blade holder, which comprises: a holder mounting suspension, suspendedly mounted on the top end of the tank body along the diameter direction of the tank body; a holder barrel, arranged along the vertical central axis and suspendedly mounted below the holder mounting suspension; and a driving unit, at least partially mounted in the holder barrel, the lower end of the driving unit being located outside the holder barrel for connecting the mixing blade protection cover, the driving unit having a downwardly extending driving shaft, which extends downwardly below the mixing blade protection cover for connecting and driving the mixing blade.

[0033] In this embodiment, the suspendedly mounted mixing blade holder is stably fixedly mounted on the tank body, reduces the occupation of the material feeding space at the upper end of the tank body, and facilitates the mixing blade to be in the preferred mixing position at the lower part of the mixing space. In addition, the holder barrel can protect the weak part of the driving unit.

[0034] In one embodiment, the mixer further comprises: a tank top protection cover, mounted on the top end of the tank body, for shielding large pieces of material larger than a predetermined allowable size of aggregate.

[0035] In this embodiment, the tank top protection cover can prevent oversized material from exceeding the allowable mixing size range of the mixer, thereby ensuring that the mixer operates within a safe range.

[0036] In one embodiment, the mixing blade comprises: a central mounting portion; and a plurality of mixing arms respectively extending radially outwardly from the central mounting portion, wherein the mixing arms have a rectangular cross section and are configured to gradually decrease in width and height in the direction radially outwardly.

[0037] In this embodiment, the mixing blade is configured in this way to make the mass and strength distribution of the mixing blade more suitable for high-speed vortex mixing. Preferably, the mixing blade is arranged centrally symmetrically with respect to the vertical central axis and has a plurality of elongated cross-section mixing arms. Preferably, the number of mixing arms is 3 to 6.

[0038] In one embodiment, the mixing blade is configured such that, in the cross section in which the mixing blade is located, the diameter of the mixing blade occupies 30-40% of the inner wall diameter of the tank body.

[0039] In this embodiment, the mixing blade diameter is configured in this way with respect to the tank body inner wall diameter to make the second material falling area fully meet the falling requirements of large pieces of material, and to form a better vortex fluid form and path in the tank body, better achieving the stripping and uniform mixing of the dispersed material.

[0040] In one embodiment, the mixer is configured such that the rotational speed of the stirring blade is between 100 and 1000 revolutions per minute.

[0041] In this embodiment, the rotational speed of the stirring blade is configured such that the liquid solid soil mixture in the tank is able to form an optimal vortex state, thereby accelerating the stripping and dispersion of the soil in the material and improving production efficiency. Too high a rotational speed has little effect on the flow rate and shape of the vortex and can result in an increase in power load and vibration, while too low a rotational speed makes it difficult to form an effective vortex shape and thus the scouring and stripping effect of the soil is not obvious.

[0042] According to another aspect of the present disclosure, a mobile mixing device is also provided, characterized in that it comprises a mobile chassis having wheels, and the flow state solidified soil non-breaking semi-contact grading mixer according to any one of the preceding embodiments disposed on the mobile chassis.

[0043] By disposing the mixer on a mobile chassis having wheels, a mobile mixing device is formed, thereby facilitating the transfer of mixing operations and improving mobility. BRIEF DESCRIPTION OF DRAWINGS

[0044] Figure 1 is a front view structural schematic diagram of a flow state solidified soil non-breaking semi-contact grading mixer according to one embodiment of the present disclosure, and the tank is shown in a transparent manner to clearly show the internal structure of the mixer of the present disclosure;

[0045] Figure 2 is a front view structural schematic diagram of a flow state solidified soil non-breaking semi-contact grading mixer according to one embodiment of the present disclosure, and the tank is shown in a transparent manner to clearly show the internal structure of the mixer of the present disclosure; Figure 1 is a front view structural schematic diagram of a flow state solidified soil non-breaking semi-contact grading mixer according to one embodiment of the present disclosure, and the tank is shown in a transparent manner to clearly show the internal structure of the mixer of the present disclosure;

[0046] Figure 3 is a front view structural schematic diagram of a flow state solidified soil non-breaking semi-contact grading mixer according to one embodiment of the present disclosure, and the tank is shown in a transparent manner to clearly show the internal structure of the mixer of the present disclosure; Figure 1 is a front view structural schematic diagram of a flow state solidified soil non-breaking semi-contact grading mixer according to one embodiment of the present disclosure, and the tank is shown in a transparent manner to clearly show the internal structure of the mixer of the present disclosure;

[0047] Figure 4 is a front view structural schematic diagram of a flow state solidified soil non-breaking semi-contact grading mixer according to one embodiment of the present disclosure, and the tank is shown in a transparent manner to clearly show the internal structure of the mixer of the present disclosure; Figure 1 is a front view structural schematic diagram of a flow state solidified soil non-breaking semi-contact grading mixer according to one embodiment of the present disclosure, and the tank is shown in a transparent manner to clearly show the internal structure of the mixer of the present disclosure;

[0048] Figure 5 is a front view structural schematic diagram of a flow state solidified soil non-breaking semi-contact grading mixer according to one embodiment of the present disclosure, and the tank is shown in a transparent manner to clearly show the internal structure of the mixer of the present disclosure; Figure 1 is a front view structural schematic diagram of a flow state solidified soil non-breaking semi-contact grading mixer according to one embodiment of the present disclosure, and the tank is shown in a transparent manner to clearly show the internal structure of the mixer of the present disclosure;

[0049] Figure 6 is a front view structural schematic diagram of a flow state solidified soil non-breaking semi-contact grading mixer according to one embodiment of the present disclosure, and the tank is shown in a transparent manner to clearly show the internal structure of the mixer of the present disclosure; Figure 1 is a front view structural schematic diagram of a flow state solidified soil non-breaking semi-contact grading mixer according to one embodiment of the present disclosure, and the tank is shown in a transparent manner to clearly show the internal structure of the mixer of the present disclosure;

[0050] Figure 7is a front view structural schematic diagram of a flowable solidified soil non-breaking semi-contacting staged mixer according to another embodiment of the present disclosure, wherein a tank top protective cover is further provided on the top of the tank body;

[0051] Figure 8 is a front view structural schematic diagram of a flowable solidified soil non-breaking semi-contacting staged mixer according to Figure 7 is a perspective view structural schematic diagram of the tank top protective cover of the mixer.

[0052] In the figure:

[0053] 10. Tank body 12. Cylindrical tank barrel section 14. Conical tank bottom section 20. Agitator blade mount 22. Blade mount suspension 24. Blade barrel 26. Drive unit 262. Drive shaft 30. Agitator blade 32. Center mount 34. Agitator arm 40. Agitator blade guard 40a. Top guard section 40b. Side guard section 42. Radial guard rib 44. Circumferential guard rib 46. Vortex channel 50. Discharge chute 52. Discharge chute sidewall 54. Discharge chute floor 60. Discharge door 62. Discharge door drive cylinder 64. Discharge door body 70. Tank top guard 72. Tank top guard mount 74. Tank top guard grid 80. Tank body support DETAILED DESCRIPTION

[0054] The technical solutions in the present disclosure will be described clearly and completely below in combination with embodiments and drawings. Obviously, the described embodiments are only part of the embodiments of the present disclosure, rather than all the embodiments. All other embodiments obtained by those skilled in the art based on the spirit of the present disclosure are within the scope of protection of the present disclosure.

[0055] Figure 1 is a front view structural schematic diagram of a flowable solidified soil non-breaking semi-contacting staged mixer according to an embodiment of the present disclosure, for clearly showing the internal structure of the mixer of the present disclosure, wherein the tank body is shown in a transparent manner. Figure 2 is a front view structural schematic diagram of a flowable solidified soil non-breaking semi-contacting staged mixer according to an embodiment of the present disclosure, for clearly showing the internal structure of the mixer of the present disclosure, wherein the tank body is shown in a transparent manner. Figure 1 is a perspective view partial sectional structural schematic diagram of the mixer, showing the relative position relationship between the mixing blade seat, the mixing blade protective cover and the mixing blade.

[0056] Referring to Figure 1 and Figure 2 , it can be seen that the flowable solidified soil non-breaking semi-contacting staged mixer according to an embodiment of the present disclosure comprises a tank body 10, a mixing blade 30 and a guiding device (for example, a mixing blade protective cover 40 shown in Figure 1 and Figure 2 ). The tank body 10 has a vertical central axis and defines a mixing space inside. The upper end of the tank body 10 has an opening through which the flowable solidified soil raw materials such as water, construction waste, solidified agent and other additives are put into the mixing space of the tank body 10. The mixing blade 30 is arranged in the tank body 10 along the vertical central axis of the tank body 10. The mixing blade 30 is preferably arranged in the lower part of the mixing space for stirring the fluid located in the mixing space. The rotation speed of the mixing blade 30 can make the fluid form a circulating vortex around the vertical central axis. The mixing blade 30 is configured such that, in the cross section where the mixing blade is located, the mixing space in the tank body 10 comprises: 1) a first material falling area covering the radius of rotation of the mixing blade 30; and 2) a second material falling area located outside the first material falling area; the guiding device (for example, the mixing blade protective cover 40) can guide the large pieces of predetermined size in the put-in material to fall through the second material falling area.

[0057] In the present disclosure, since the stirring blade adopts vertical stirring and is located at the lower part of the stirring space, and the rotating speed of the stirring blade can make the slurry flow form a circulating vortex, and the guide device (for example, the stirring blade protection cover 40) guides the large block material to fall through the second material falling area. The specific process is that under the rapid stirring of the stirring blade, the fluid formed by water and soil is stirred, different areas of the fluid form different pressures, the pressure inside (that is, the position of the heart close to the vertical center axis) is small, and the pressure outside is large, and the whole fluid will form a large vortex around the vertical center axis. Above the stirring blade, the vortex flows outward along the radial direction and upward along the inner wall of the tank, flows radially toward the middle and downward at the upper end of the fluid, forming a circulating fluid, while below the stirring blade, the vortex flows outward along the radial direction and downward along the inner wall of the tank, and then flows radially toward the middle and upward along the bottom wall of the tank, forming a circulating fluid. Under the action of this vortex, the mud on the upper edge of the stirring blade walks toward the middle, and the middle is the blade, that is, the vortex forces the material to return to the stirring blade protection cover (or called the blade disc). At this time, the stirring blade and / or the stirring blade protection cover come into contact with the block material. When the large block material (for example, stone) falls onto the stirring blade protection cover 40, it does not necessarily directly roll off. If it does not roll off, the water flow flowing through the stirring blade protection cover 40 will form a small vortex around the large block material, which will directly wash the surface of the large block material to strip the soil, and then the large block material will be wrapped and entrained by the vortex, and soon it will roll toward the second material falling area. Therefore, the mixer of the present disclosure has the following effects: 1) under the direct contact of the stirring blade, it can further strip and scatter the soil in the material by using the wrapping and washing action of the vortex, so as to form uniform mud and granular aggregate, thereby realizing the organic combination of direct contact forced stirring based on the blade and indirect stirring based on the high-speed wrapping and washing of the vortex, and realizing higher stirring efficiency and better stirring effect; 2) the large block material falls from the second material falling area under the guidance of the guide device (for example, the stirring blade protection cover 40), so that the stirring blade 30 can be protected from being damaged by collision with the large block material; 3) since the large block material of a predetermined size does not directly contact the blade, but is stripped of soil by vortex washing, and small block materials collide with each other under the wrapping of the vortex, and are also in contact with the blade (although the collision between the material and the blade is reduced due to the wrapping of the high-speed vortex, but it still occurs), therefore, when the material is put in, it does not need to be artificially distinguished, but the machine is naturally configured to realize semi-contact classification stirring based on the size of the material, so that pre-screening and crushing are not needed before stirring, further improving the working effect; 4) since the collision between the material and the blade is reduced due to the wrapping of the high-speed vortex, the high-speed vortex itself also protects the blade; 5) the large block material retains in the slurry after being stripped of soil and is directly used as aggregate, which can improve the compressive strength of the building material after pouring.

[0058] With reference to the drawings Figure 1 and Figure 2 In this embodiment of the present disclosure, the guiding device can be specifically the mixing blade protection cover 40, which is arranged above the mixing blade 30 to guide the large pieces of material in the material falling from above towards the second material falling area, while allowing the vortex and other materials wrapped therein to pass through the mixing blade protection cover 40. It can be understood that the mixing blade protection cover 40 guides based on the size of the material, which itself is equivalent to a kind of screening function to some extent.

[0059] In operation, the mixing blade 30 rotates at high speed, and the mixing blade protection cover 40 remains stationary. The mixing blade protection cover 40 allows the vortex to pass through with small particles of material wrapped therein to be fully stripped and dispersed with the vortex, and further promotes the dispersion of the material by collision with these materials, so as to make the flow state of the soil obtained by stirring more uniform.

[0060] The mixer can be configured such that the rotational speed of the mixing blade 30 is 100 to 1000 revolutions per minute (inclusive). In this embodiment, the rotational speed of the mixing blade is configured in this way so that the liquid solid soil stirring material in the tank can form a better vortex state, thereby accelerating the stripping and dispersion of the soil in the material and improving production efficiency. Too high a rotational speed has little effect on the flow rate and shape of the vortex and can increase power load and vibration, and too low a rotational speed makes it difficult to form an effective vortex shape and thus the scouring and stripping effect of the soil is not obvious. Further preferably, the rotational speed of the mixing blade 30 is 200 to 800 revolutions per minute (inclusive), and more preferably, 300 to 500 revolutions per minute (inclusive). The high-speed rotating mixing blade has better dispersion effect on some higher viscosity soil, such as clay, etc., because it can directly tear apart these clumps of soil into small pieces and quickly disperse them under the wrapping and particle impact of the vortex.

[0061] In contrast, the rotational speed of a conventional flow state soil mixer (such as a horizontal mixer) is only tens of revolutions per minute, which can only form a forced stirring driven by the direct contact of the mixing blade with the slurry. Large pieces of material that cannot be contacted by the mixing blade are difficult to disperse, and even if the mixing blade directly contacts, it cannot tear apart the higher viscosity soil. Moreover, due to the low rotational speed, the conventional flow state soil mixer cannot form a circulating vortex.

[0062] In the embodiment of the present disclosure, the stirring blade 30 is configured such that, in the cross section where the stirring blade is located, the diameter of the stirring blade 30 accounts for 30-40% of the inner wall diameter of the tank body 10. By configuring the proportion of the stirring blade diameter relative to the inner wall diameter of the tank body in this way, the second material falling area can fully meet the falling requirements of the large block material, and at the same time, a better vortex fluid form and path can be formed in the tank body 10, so as to better achieve the stripping and uniform stirring of the dispersed material.

[0063] From Figure 1 It can also be seen from

[0064] In combination with Figure 1 and Figure 2 The stirring blade 30 is arranged at the lower part of the cylindrical tank barrel segment 12, and the tank body 10 and the stirring blade 30 are configured such that the stirring space in the tank body 10 further comprises: 3) a large block material containing space between the stirring blade 30 and the conical tank bottom segment 14. Since the large block material containing space is provided, the large block material falling to the tank bottom can avoid colliding with the stirring blade.

[0065] Referring to Figure 2 The flowable soil non-breaking semi-contact grading stirrer further comprises: a discharge groove 50 arranged at the bottom of the tank body 10 and extending downward from the bottom wall of the tank body 10. The discharge groove 50 is configured to be suitable for containing the large block material. The discharge groove has two functions, one is to discharge, and the other is to contain and hold the large block material. Since the discharge groove 50 can contain and hold the large block material, it can prevent the large block material from being taken away by the fluid, thereby further preventing the large block material from colliding with and damaging the stirring blade. The large block material stripped of soil during discharging can be directly used as aggregate, which can increase the compressive strength of the solid soil after being poured and solidified.

[0066] From Figure 2 It can also be seen from

[0067] Since the discharge chute 50 is the discharge passage of the flowable solidified soil after the mixing is completed, the large aggregate formed after the large block material is stripped of the mud can be discharged together with other small aggregate through the discharge chute extending downwardly and directly discharged as the reinforcing aggregate of the solidified building structure during the discharging process without manual sorting.

[0068] Continuing to refer to Figure 1 and Figure 2 , it can be seen that the flowable solidified soil non-breaking semi-contact grading mixer according to the embodiments of the present disclosure further comprises a discharge door 60 and a discharge door body 64. The discharge door 60 comprises a discharge door driving cylinder 62 fixedly installed at the upper end on the outer surface of the tank body 10. The upper end of the discharge door body 64 is pivotally installed on the outer surface of the tank body 10, and the middle part (optionally, the lower end of the discharge door body 64) of the discharge door body 64 is connected to the lower end of the discharge door driving cylinder 62 to block or open the discharge end opening of the discharge chute 50 through the driving of the discharge door driving cylinder 62.

[0069] In this embodiment, by setting the discharge door body 64 to be pivotally installed at the upper end and using the discharge door driving cylinder 62 to control the blocking or opening state of the discharge door body 64, the discharged flowable solidified soil can be prevented from flowing downwardly onto the pivot shaft, and sufficient actuating force can be provided to ensure that the discharge door is reliably operated.

[0070] As an embodiment not shown, a grate formed by a grid can be selectively added inside the discharge door as needed to remove the unnecessary oversized large block material from the flowable solidified soil during the pouring to control the aggregate size in the final poured solidified soil.

[0071] Figure 3 is another perspective partial cross-sectional structural schematic diagram of the mixer shown in Figure 1 , which shows the internal structural schematic diagram of the mixing blade seat. Figure 4 is the perspective installation structural schematic diagram of the mixing blade in the mixer shown in Figure 1 . Figure 5 is the perspective installation structural schematic diagram of the mixing blade and the mixing blade protective cover on the mixing blade seat in the mixer shown in Figure 1 . Figure 6 is the front view installation structural schematic diagram of the mixing blade protective cover on the mixing blade seat in the mixer shown in Figure 1 .

[0072] In combination with referring to Figure 3 , Figure 5 and Figure 6 , in particular Figure 6As can be seen, the stirring blade protection cover 40 comprises a top protection section 40a and a side protection section 40b. The top protection section 40a is located above the stirring blade 30; and the side protection section 40b extends downward from the top protection section 40a to the same or lower height position as the stirring blade 30.

[0073] With such a configuration, the stirring blade protection cover 40 not only protects the stirring blade 30 from collision damage by large pieces of material from above, but also protects the stirring blade 30 from collision damage by large pieces of material from the radially outer side.

[0074] Still referring to Figure 6 As can be seen, the top protection section 40a extends horizontally in the radially outward direction, and the side protection section 40b extends in the radially outward direction at an inclined angle relative to the horizontal direction. In an embodiment not shown, the top protection section 40a extends in the radially outward direction at a first inclined angle relative to the horizontal direction, and the side protection section 40b extends in the radially outward direction at a second inclined angle relative to the horizontal direction, the first inclined angle being smaller than the second inclined angle.

[0075] The top protection section 40a of the stirring blade protection cover 40 is arranged horizontally or at a small inclined angle, so that a small overall distance from the stirring blade can be maintained, ensuring that the stirred vortex fluid passes at high speed, avoiding a large impact on the vortex pattern and speed within the tank 10, thereby achieving a better stirring effect. At the same time, such a configuration of the top protection section 40a and the side protection section 40b is also conducive to the rapid stripping of soil carried by large pieces of material, and the large pieces of material, after stripping the soil and becoming lighter in weight, can be swept away from the original position by the high-speed vortex and guided by the side protection section with a larger inclined angle to the second material falling area for falling.

[0076] As can be seen from Figure 5 The stirring blade protection cover 40 comprises a plurality of radial protection ribs 42 extending in the radial direction of the stirring blade protection cover 40, a plurality of circumferential protection ribs 44 extending in the circumferential direction of the stirring blade protection cover 40, and a plurality of vortex channels 46 formed between the radial protection ribs 42 and the circumferential protection ribs 44. In this embodiment, as a preferred configuration, the radial protection ribs 42 and / or the circumferential protection ribs 44 can be made of a profile with a rectangular cross section. In this embodiment, as a further preferred configuration, the long side of the rectangular cross section of the profile is arranged in the vertical direction. As another preferred configuration, the long side of the rectangular cross section can also be arranged at a small inclined angle (e.g. within 30 degrees) relative to the vertical direction. This can facilitate the formation of a vortex and allow the length of the long side to be increased.

[0077] In this embodiment, the agitator blade guard 42 is integrally formed as a frame structure, which can obtain a large opening vortex passage, which makes the rotating circulation vortex more easily pass through, so as to ensure that the mixer is more suitable for performing vortex mixing. In addition, the arrangement direction of the profile section of the circumferential and radial protection ribs can obtain multiple effects, 1) to facilitate obtaining a large opening vortex passage; 2) to ensure the protection strength of the large block material falling from above, and 3) the rib side surface where the long side of the profile section is located can fully block the small block material wrapped by the vortex to increase the opportunity of collision, thereby promoting the scouring and stripping of the soil on the surface of the material by the vortex.

[0078] With reference to Figure 2 and Figure 3 The flowable soil non-breaking semi-contacting step mixer of this embodiment further comprises an agitator blade seat 20, which comprises a blade seat mounting suspension 22, a blade seat cylinder 24, and a driving unit 26. In this embodiment, the blade seat mounting suspension 22 is suspendedly mounted on the top end of the tank body 10 in the substantially radial direction of the tank body 10. In this embodiment, the blade seat mounting suspension 22 comprises two cross beams extending in the diameter direction of the tank body, and the blade seat cylinder 24 is arranged along the vertical central axis and is suspendedly mounted below the two cross beams of the blade seat mounting suspension 22. With reference to Figure 3 , the driving unit 26 is only schematically shown, which can be a hydraulic motor, at least a part of which is mounted in the blade seat cylinder 24, and the hydraulic control elements of the hydraulic motor can be located in the blade seat cylinder 24, and the lower end of the hydraulic motor extends to the outside of the blade seat cylinder 24 for connecting the agitator blade guard 40. In an embodiment not shown, the driving unit 26 can also be an electric motor. The driving unit 26 has a downwardly extending driving shaft 262, which extends downwardly below the agitator blade guard 40 for connecting and driving the agitator blade 30.

[0079] In this embodiment, the suspendedly mounted agitator blade seat can be stably fixedly mounted on the tank body 10, reduce the occupation of the material feeding space at the upper end of the tank body, and facilitate the agitator blade 30 to be in the preferred stirring position at the lower part of the stirring space. In addition, the blade seat cylinder 24 can protect the weak part of the driving unit 26.

[0080] With reference to Figure 4It can be seen that the stirring blade 30 comprises a central mounting portion 32 and a plurality of stirring arms 34 extending radially outwardly from the central mounting portion 32. Preferably, the stirring arms have a rectangular cross section, and the long side of the rectangular cross section is arranged along the vertical direction or at a small inclination angle (e.g. within 30 degrees) relative to the vertical direction. In this way, the stirring force of the stirring arms can be increased, and the formation of vortexes can be promoted by high-speed rotation of the stirring arms. Further preferably, the stirring arms are configured such that the width and height of the rectangular cross section gradually decrease in the direction radially outward. By configuring the structure of the stirring blade in this way, the mass and strength distribution of the stirring blade are more suitable for high-speed vortex stirring. Preferably, the stirring blade is arranged symmetrically about the vertical central axis, and has a plurality of elongated stirring arms. Preferably, the number of stirring arms is 3 to 6, and the stirring arms are uniformly distributed in the circumferential direction.

[0081] Figure 7 is a front view structural schematic diagram of a flow state solidified soil non-breaking semi-contact grading mixer according to another embodiment of the present disclosure, wherein a tank top protective cover is further provided on the top of the tank body. Figure 8 is a front view structural schematic diagram of a flow state solidified soil non-breaking semi-contact grading mixer according to another embodiment of the present disclosure, wherein a tank top protective cover is further provided on the top of the tank body. Figure 7 is a perspective view structural schematic diagram of the tank top protective cover of the mixer shown in the figure.

[0082] Compared with the embodiment shown in Figure 1 , in the embodiment shown in Figure 7 , the mixer is further provided with a tank top protective cover 70. The tank top protective cover 70 is installed on the top end of the tank body 10, and is used to shield large pieces of material larger than the predetermined allowable size of aggregate. In this way, the tank top protective cover 70 can prevent oversized material from exceeding the allowable stirring size range of the mixer, thereby ensuring that the mixer operates within a safe range. From Figure 7 and Figure 8 , it can be seen that the tank top protective cover 70 comprises a tank top protective cover mounting seat 72 and a tank top protective cover grid 74 fixedly connected to the top of the tank top protective cover mounting seat 72. The tank top protective cover mounting seat 72 can be a generally cylindrical structure, and a circular connecting flange can be configured at the bottom thereof to facilitate connection with the top of the tank body 10. The opening at the top thereof can have a generally square structure to facilitate the connection with the generally square tank top protective cover grid 74. The overall cylindrical structure of the tank top protective cover mounting seat 72 smoothly transitions from the bottom to the top, so that not only a larger material feeding area can be provided, but also the material can smoothly enter the tank body with a circular cross section.

[0083] According to another embodiment of the present disclosure, which is not shown, a mobile mixing device is also provided, which comprises a mobile chassis with wheels and a flow state solidified soil non-breaking semi-contact grading mixer according to any embodiment of the present disclosure, and the mixer is arranged on the mobile chassis. By arranging the mixer on the mobile chassis with wheels, a mobile mixing device is formed, thereby facilitating the transfer of mixing operations and improving mobility.

[0084] Obviously, numerous modifications and variations of the present disclosure are possible in light of the above teachings. It is therefore to be understood that within the scope of the present disclosure, the disclosure and various embodiments can be practiced otherwise than as specifically described.

Claims

1. A fluidified solidified soil breakage-free semi-contact fractionating mixer, characterized in that, Comprising: a tank body (10) defining a mixing space, the tank body (10) having a vertical central axis; a mixing blade (30) arranged in the tank body (10) along the vertical central axis for mixing a fluid in the mixing space, the mixing blade (30) having a rotational speed capable of causing the fluid to form a circulating vortex around the vertical central axis, the mixing blade (30) being configured such that, in a cross section in which the mixing blade is located, the mixing space in the tank body (10) comprises: 1) a first drop zone covering a radius of rotation of the mixing blade (30); and 2) a second drop zone located outside the first drop zone; and a guide device guiding a predetermined size of large pieces of material in the material being fed to fall via the second drop zone, wherein the guide device comprises a mixing blade protection cover (40) arranged above the mixing blade (30) to guide the large pieces of material in the material falling from above towards the second drop zone while allowing the vortex and other materials wrapped therein to pass through the mixing blade protection cover (40), wherein the mixing blade protection cover (40) comprises: a top protection section (40a) located above the mixing blade (30) and extending horizontally in a radially outward direction or at a first inclination angle with respect to the horizontal direction; and a side protection section (40b) extending downward from the top protection section (40a) and extending at a second inclination angle with respect to the horizontal direction in a radially outward direction, wherein the first inclination angle is smaller than the second inclination angle.

2. The semi-contacting classified mixer for fluidified soil according to claim 1, wherein: the tank body (10) comprises a cylindrical tank barrel section (12) and a conical tank bottom section (14) located at a bottom of the cylindrical tank barrel section (12).

3. The semi-contacting classified mixer for fluidified soil according to claim 2, wherein: the mixing blade (30) is arranged at a lower portion of the cylindrical tank barrel section (12), the tank body (10) and the mixing blade (30) are configured such that the mixing space in the tank body (10) further comprises: 3) a large piece material containing space located between the mixing blade (30) and the conical tank bottom section (14).

4. The semi-contacting non-fragmenting classified mixer of fluidified solidified earth according to any one of claims 1 to 3, characterized in that, Further comprising: a discharge chute (50) arranged at a bottom of the tank body (10) and extending downward from a bottom wall of the tank body (10), the discharge chute (50) being configured to be adapted to contain the large pieces of material.

5. The semi-contacting non-breaking classified mixer of fluidified soil according to claim 4, characterized in that, the discharge chute (50) extends radially outward on the bottom wall of the tank body (10) and comprises: two discharge chute side walls (52); and a discharge chute bottom wall (54) connected at a bottom of the two discharge chute side walls (52) and extending radially outward and downward.

6. The semi-contacting non-breaking classified mixer of fluidified soil according to claim 4, characterized in that, Further comprising a discharge door (60) comprising: a discharge door drive cylinder (62) having a top end fixedly mounted on an outer surface of the tank body (10); and An outlet door body (64) is pivotally mounted at an upper end thereof to an outer surface of the tank body (10), and is connected at a middle or lower end thereof to a lower end of the outlet door drive cylinder (62) to block or open an outlet end opening of the outlet chute (50) by driving of the outlet door drive cylinder (62).

7. The semi-contacting non-breaking classified mixer of fluidified solidified soil according to claim 1, characterized in that, The side protection section (40b) extends downward from the top protection section (40a) to a same or lower height position as the mixing blade (30).

8. The semi-contacting non-breaking classified pugmill of claim 1, wherein, The mixing blade protection cover (40) includes: a plurality of radial protection ribs (42) extending in a radial direction of the mixing blade protection cover (40); a plurality of circumferential protection ribs (44) extending in a circumferential direction of the mixing blade protection cover (40); and a plurality of vortex channels (46) formed between the radial protection ribs (42) and the circumferential protection ribs (44), wherein at least a portion of the radial protection ribs (42) and / or the circumferential protection ribs (44) are made of a profiled material having a rectangular cross section, and long sides of the rectangular cross section of the profiled material are arranged in the vertical direction.

9. The semi-contacting non-breaking classified pugmill of claim 1 wherein, Further comprising a mixing blade seat (20) including: a seat mounting suspension (22) suspendedly mounted to a top end of the tank body (10) in a diametric direction of the tank body (10); a seat cylinder (24) arranged along the vertical central axis and suspendedly mounted downward below the seat mounting suspension (22); and a drive unit (26) at least partially mounted in the seat cylinder (24), a lower end of the drive unit (26) being located outside the seat cylinder (24) for connecting the mixing blade protection cover (40), the drive unit (26) having a downwardly extending drive shaft (262) extending downward below the mixing blade protection cover (40) for connecting and driving the mixing blade (30).

10. The semi-contacting non-fragmenting classified mixer of fluidified solidified earth according to any one of claims 1 to 3, characterized in that, The mixer further includes: a tank top protection cover (70) mounted at a top end of the tank body (10) for shielding large pieces of material larger than a predetermined allowable size of aggregate.

11. The semi-contacting non-fragmenting classified mixer of pasty state solidified soil according to any one of claims 1 to 3, characterized in that, The mixing blade (30) includes: a central mounting portion (32); and a plurality of mixing arms (34) respectively extending radially outward from the central mounting portion (32), wherein the mixing arms (34) have a rectangular cross section, and are configured to gradually decrease in width and height in a direction radially outward.

12. The flowable solidified soil breakage-free semi-contacting stepped mixer according to any one of claims 1 to 3, wherein: the mixing blade (30) is configured such that, in a cross section in which the mixing blade is located, a diameter of the mixing blade (30) accounts for 30-40% of an inner wall diameter of the tank body (10).

13. The flowable solidified soil breakage-free semi-contacting stepped mixer according to any one of claims 1 to 3, wherein: the mixer is configured such that a rotational speed of the mixing blade (30) is 100-1000 revolutions per minute.

14. Mobile mixing plant, characterized in that including: a mobile chassis having wheels; and ​ The semi-impact, non-impact, or semi-impact non-impact, non-impact, non-impact, non-impact, non-impact, non-impact, non-impact, non-impact, non-impact, non-impact, non-impact, non-impact, non-impact, non-impact, non-impact, non-impact, non-impact, non-impact, non-impact, non

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